Initial platform port for MediaTek mt8173

- Boot up 4 cores.
- Add a generic UART driver.
- Add generic CPU helper functions
- Supoort suspend
- Add system_off & system_reset implementation
- Add crash console reporting implementation
- Add get_sys_suspend_power_state() for PSCI 1.0 SYSTEM_SUSPEND
- Add Mediatek SIP runtime service
- Add delay timer platform implementation

Change-Id: I44138249f115ee10b9cbd26fdbc2dd3af04d825f
Signed-off-by: CC Ma <cc.ma@mediatek.com>
Signed-off-by: Jimmy Huang <jimmy.huang@mediatek.com>

40 files changed, 5507 insertions, 0 deletions

diff --git a/plat/mediatek/common/mtk_sip_svc.c b/plat/mediatek/common/mtk_sip_svc.c
new file mode 100644
index 00000000..af280807
--- /dev/null
+++ b/plat/mediatek/common/mtk_sip_svc.c
@@ -0,0 +1,113 @@
+/*
+ * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <assert.h>
+#include <debug.h>
+#include <mtk_sip_svc.h>
+#include <runtime_svc.h>
+#include <uuid.h>
+
+/* Mediatek SiP Service UUID */
+DEFINE_SVC_UUID(mtk_sip_svc_uid,
+		0xf7582ba4, 0x4262, 0x4d7d, 0x80, 0xe5,
+		0x8f, 0x95, 0x05, 0x00, 0x0f, 0x3d);
+
+/*
+ * This function handles Mediatek defined SiP Calls */
+static uint64_t mediatek_sip_handler(uint32_t smc_fid,
+				     uint64_t x1,
+				     uint64_t x2,
+				     uint64_t x3,
+				     uint64_t x4,
+				     void *cookie,
+				     void *handle)
+{
+	uint64_t ret;
+
+	switch (smc_fid) {
+	case MTK_SIP_SET_AUTHORIZED_SECURE_REG:
+		ret = mt_sip_set_authorized_sreg((uint32_t)x1, (uint32_t)x2);
+		SMC_RET1(handle, ret);
+
+	default:
+		ERROR("%s: unhandled SMC (0x%x)\n", __func__, smc_fid);
+		break;
+	}
+
+	SMC_RET1(handle, SMC_UNK);
+}
+
+/*
+ * This function is responsible for handling all SiP calls from the NS world
+ */
+uint64_t sip_smc_handler(uint32_t smc_fid,
+			 uint64_t x1,
+			 uint64_t x2,
+			 uint64_t x3,
+			 uint64_t x4,
+			 void *cookie,
+			 void *handle,
+			 uint64_t flags)
+{
+	uint32_t ns;
+
+	/* Determine which security state this SMC originated from */
+	ns = is_caller_non_secure(flags);
+	if (!ns)
+		SMC_RET1(handle, SMC_UNK);
+
+	switch (smc_fid) {
+	case SIP_SVC_CALL_COUNT:
+		/* Return the number of Mediatek SiP Service Calls. */
+		SMC_RET1(handle, MTK_SIP_NUM_CALLS);
+
+	case SIP_SVC_UID:
+		/* Return UID to the caller */
+		SMC_UUID_RET(handle, mtk_sip_svc_uid);
+
+	case SIP_SVC_VERSION:
+		/* Return the version of current implementation */
+		SMC_RET2(handle, MTK_SIP_SVC_VERSION_MAJOR,
+			MTK_SIP_SVC_VERSION_MINOR);
+
+	default:
+		return mediatek_sip_handler(smc_fid, x1, x2, x3, x4,
+			cookie, handle);
+	}
+}
+
+/* Define a runtime service descriptor for fast SMC calls */
+DECLARE_RT_SVC(
+	mediatek_sip_svc,
+	OEN_SIP_START,
+	OEN_SIP_END,
+	SMC_TYPE_FAST,
+	NULL,
+	sip_smc_handler
+);
diff --git a/plat/mediatek/common/mtk_sip_svc.h b/plat/mediatek/common/mtk_sip_svc.h
new file mode 100644
index 00000000..eb1c2e60
--- /dev/null
+++ b/plat/mediatek/common/mtk_sip_svc.h
@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef __PLAT_SIP_SVC_H__
+#define __PLAT_SIP_SVC_H__
+
+#include <stdint.h>
+
+/* SMC function IDs for SiP Service queries */
+#define SIP_SVC_CALL_COUNT		0x8200ff00
+#define SIP_SVC_UID			0x8200ff01
+/*					0x8200ff02 is reserved */
+#define SIP_SVC_VERSION			0x8200ff03
+
+/* Mediatek SiP Service Calls version numbers */
+#define MTK_SIP_SVC_VERSION_MAJOR	0x0
+#define MTK_SIP_SVC_VERSION_MINOR	0x1
+
+/* Number of Mediatek SiP Calls implemented */
+#define MTK_SIP_NUM_CALLS		1
+
+/* Mediatek SiP Service Calls function IDs */
+#define MTK_SIP_SET_AUTHORIZED_SECURE_REG	0x82000001
+
+/* Mediatek SiP Calls error code */
+enum {
+	MTK_SIP_E_SUCCESS = 0,
+	MTK_SIP_E_INVALID_PARAM = -1
+};
+
+/*
+ * This function should be implemented in Mediatek SOC directory. It fullfills
+ * MTK_SIP_SET_AUTHORIZED_SECURE_REG SiP call by checking the sreg with the
+ * predefined secure register list, if a match was found, set val to sreg.
+ *
+ * Return MTK_SIP_E_SUCCESS on success, and MTK_SIP_E_INVALID_PARAM on failure.
+ */
+uint64_t mt_sip_set_authorized_sreg(uint32_t sreg, uint32_t val);
+
+#endif /* __PLAT_SIP_SVC_H__ */
diff --git a/plat/mediatek/mt8173/aarch64/plat_helpers.S b/plat/mediatek/mt8173/aarch64/plat_helpers.S
new file mode 100644
index 00000000..99a054c8
--- /dev/null
+++ b/plat/mediatek/mt8173/aarch64/plat_helpers.S
@@ -0,0 +1,86 @@
+/*
+ * Copyright (c) 2013-2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <arch.h>
+#include <asm_macros.S>
+#include <mt8173_def.h>
+
+	.globl	plat_secondary_cold_boot_setup
+	.globl	plat_report_exception
+	.globl	platform_is_primary_cpu
+	.globl	plat_crash_console_init
+	.globl	plat_crash_console_putc
+
+	/* -----------------------------------------------------
+	 * void plat_secondary_cold_boot_setup (void);
+	 *
+	 * This function performs any platform specific actions
+	 * needed for a secondary cpu after a cold reset e.g
+	 * mark the cpu's presence, mechanism to place it in a
+	 * holding pen etc.
+	 * -----------------------------------------------------
+	 */
+func plat_secondary_cold_boot_setup
+	/* MT8173 Oak does not do cold boot for secondary CPU */
+cb_panic:
+	b	cb_panic
+endfunc plat_secondary_cold_boot_setup
+
+func platform_is_primary_cpu
+	and	x0, x0, #(MPIDR_CLUSTER_MASK | MPIDR_CPU_MASK)
+	cmp	x0, #MT8173_PRIMARY_CPU
+	cset	x0, eq
+	ret
+endfunc platform_is_primary_cpu
+
+	/* ---------------------------------------------
+	 * int plat_crash_console_init(void)
+	 * Function to initialize the crash console
+	 * without a C Runtime to print crash report.
+	 * Clobber list : x0, x1, x2
+	 * ---------------------------------------------
+	 */
+func plat_crash_console_init
+	mov_imm	x0, MT8173_UART0_BASE
+	mov_imm	x1, MT8173_UART_CLOCK
+	mov_imm	x2, MT8173_BAUDRATE
+	b	console_core_init
+endfunc plat_crash_console_init
+
+	/* ---------------------------------------------
+	 * int plat_crash_console_putc(void)
+	 * Function to print a character on the crash
+	 * console without a C Runtime.
+	 * Clobber list : x1, x2
+	 * ---------------------------------------------
+	 */
+func plat_crash_console_putc
+	mov_imm x1, MT8173_UART0_BASE
+	b	console_core_putc
+endfunc plat_crash_console_putc
diff --git a/plat/mediatek/mt8173/aarch64/platform_common.c b/plat/mediatek/mt8173/aarch64/platform_common.c
new file mode 100644
index 00000000..b537f7b2
--- /dev/null
+++ b/plat/mediatek/mt8173/aarch64/platform_common.c
@@ -0,0 +1,110 @@
+/*
+ * Copyright (c) 2013-2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <arch_helpers.h>
+#include <arm_gic.h>
+#include <bl_common.h>
+#include <cci.h>
+#include <debug.h>
+#include <mt8173_def.h>
+#include <platform_def.h>
+#include <xlat_tables.h>
+
+static const int cci_map[] = {
+	PLAT_MT_CCI_CLUSTER0_SL_IFACE_IX,
+	PLAT_MT_CCI_CLUSTER1_SL_IFACE_IX
+};
+
+/* Table of regions to map using the MMU.  */
+const mmap_region_t plat_mmap[] = {
+	/* for TF text, RO, RW */
+	MAP_REGION_FLAT(TZRAM_BASE, TZRAM_SIZE + TZRAM2_SIZE,
+			MT_MEMORY | MT_RW | MT_SECURE),
+	MAP_REGION_FLAT(MTK_DEV_RNG0_BASE, MTK_DEV_RNG0_SIZE,
+			MT_DEVICE | MT_RW | MT_SECURE),
+	MAP_REGION_FLAT(MTK_DEV_RNG1_BASE, MTK_DEV_RNG1_SIZE,
+			MT_DEVICE | MT_RW | MT_SECURE),
+	{ 0 }
+
+};
+
+/*******************************************************************************
+ * Macro generating the code for the function setting up the pagetables as per
+ * the platform memory map & initialize the mmu, for the given exception level
+ ******************************************************************************/
+#define DEFINE_CONFIGURE_MMU_EL(_el)					\
+	void plat_configure_mmu_el ## _el(unsigned long total_base,	\
+					  unsigned long total_size,	\
+					  unsigned long ro_start,	\
+					  unsigned long ro_limit,	\
+					  unsigned long coh_start,	\
+					  unsigned long coh_limit)	\
+	{								\
+		mmap_add_region(total_base, total_base,			\
+				total_size,				\
+				MT_MEMORY | MT_RW | MT_SECURE);		\
+		mmap_add_region(ro_start, ro_start,			\
+				ro_limit - ro_start,			\
+				MT_MEMORY | MT_RO | MT_SECURE);		\
+		mmap_add_region(coh_start, coh_start,			\
+				coh_limit - coh_start,			\
+				MT_DEVICE | MT_RW | MT_SECURE);		\
+		mmap_add(plat_mmap);					\
+		init_xlat_tables();					\
+									\
+		enable_mmu_el ## _el(0);				\
+	}
+
+/* Define EL3 variants of the function initialising the MMU */
+DEFINE_CONFIGURE_MMU_EL(3)
+
+uint64_t plat_get_syscnt_freq(void)
+{
+	return SYS_COUNTER_FREQ_IN_TICKS;
+}
+
+void plat_cci_init(void)
+{
+	/* Initialize CCI driver */
+	cci_init(PLAT_MT_CCI_BASE, cci_map, ARRAY_SIZE(cci_map));
+}
+
+void plat_cci_enable(void)
+{
+	/*
+	 * Enable CCI coherency for this cluster.
+	 * No need for locks as no other cpu is active at the moment.
+	 */
+	cci_enable_snoop_dvm_reqs(MPIDR_AFFLVL1_VAL(read_mpidr()));
+}
+
+void plat_cci_disable(void)
+{
+	cci_disable_snoop_dvm_reqs(MPIDR_AFFLVL1_VAL(read_mpidr()));
+}
diff --git a/plat/mediatek/mt8173/bl31_plat_setup.c b/plat/mediatek/mt8173/bl31_plat_setup.c
new file mode 100644
index 00000000..03ec690f
--- /dev/null
+++ b/plat/mediatek/mt8173/bl31_plat_setup.c
@@ -0,0 +1,181 @@
+/*
+ * Copyright (c) 2013-2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <arm_gic.h>
+#include <assert.h>
+#include <bl_common.h>
+#include <console.h>
+#include <debug.h>
+#include <mcucfg.h>
+#include <mmio.h>
+#include <mtcmos.h>
+#include <plat_private.h>
+#include <platform.h>
+#include <spm.h>
+
+/*******************************************************************************
+ * Declarations of linker defined symbols which will help us find the layout
+ * of trusted SRAM
+ ******************************************************************************/
+unsigned long __RO_START__;
+unsigned long __RO_END__;
+
+unsigned long __COHERENT_RAM_START__;
+unsigned long __COHERENT_RAM_END__;
+
+/*
+ * The next 2 constants identify the extents of the code & RO data region.
+ * These addresses are used by the MMU setup code and therefore they must be
+ * page-aligned.  It is the responsibility of the linker script to ensure that
+ * __RO_START__ and __RO_END__ linker symbols refer to page-aligned addresses.
+ */
+#define BL31_RO_BASE (unsigned long)(&__RO_START__)
+#define BL31_RO_LIMIT (unsigned long)(&__RO_END__)
+
+/*
+ * The next 2 constants identify the extents of the coherent memory region.
+ * These addresses are used by the MMU setup code and therefore they must be
+ * page-aligned.  It is the responsibility of the linker script to ensure that
+ * __COHERENT_RAM_START__ and __COHERENT_RAM_END__ linker symbols
+ * refer to page-aligned addresses.
+ */
+#define BL31_COHERENT_RAM_BASE (unsigned long)(&__COHERENT_RAM_START__)
+#define BL31_COHERENT_RAM_LIMIT (unsigned long)(&__COHERENT_RAM_END__)
+
+static entry_point_info_t bl32_ep_info;
+static entry_point_info_t bl33_ep_info;
+
+static void platform_setup_cpu(void)
+{
+	/* turn off all the little core's power except cpu 0 */
+	mtcmos_little_cpu_off();
+
+	/* setup big cores */
+	mmio_write_32((uintptr_t)&mt8173_mcucfg->mp1_config_res,
+		MP1_DIS_RGU0_WAIT_PD_CPUS_L1_ACK |
+		MP1_DIS_RGU1_WAIT_PD_CPUS_L1_ACK |
+		MP1_DIS_RGU2_WAIT_PD_CPUS_L1_ACK |
+		MP1_DIS_RGU3_WAIT_PD_CPUS_L1_ACK |
+		MP1_DIS_RGU_NOCPU_WAIT_PD_CPUS_L1_ACK);
+	mmio_setbits_32((uintptr_t)&mt8173_mcucfg->mp1_miscdbg, MP1_AINACTS);
+	mmio_setbits_32((uintptr_t)&mt8173_mcucfg->mp1_clkenm_div,
+		MP1_SW_CG_GEN);
+	mmio_clrbits_32((uintptr_t)&mt8173_mcucfg->mp1_rst_ctl,
+		MP1_L2RSTDISABLE);
+
+	/* set big cores arm64 boot mode */
+	mmio_setbits_32((uintptr_t)&mt8173_mcucfg->mp1_cpucfg,
+		MP1_CPUCFG_64BIT);
+
+	/* set LITTLE cores arm64 boot mode */
+	mmio_setbits_32((uintptr_t)&mt8173_mcucfg->mp0_rv_addr[0].rv_addr_hw,
+		MP0_CPUCFG_64BIT);
+}
+
+/*******************************************************************************
+ * Return a pointer to the 'entry_point_info' structure of the next image for
+ * the security state specified. BL33 corresponds to the non-secure image type
+ * while BL32 corresponds to the secure image type. A NULL pointer is returned
+ * if the image does not exist.
+ ******************************************************************************/
+entry_point_info_t *bl31_plat_get_next_image_ep_info(uint32_t type)
+{
+	entry_point_info_t *next_image_info;
+
+	next_image_info = (type == NON_SECURE) ? &bl33_ep_info : &bl32_ep_info;
+
+	/* None of the images on this platform can have 0x0 as the entrypoint */
+	if (next_image_info->pc)
+		return next_image_info;
+	else
+		return NULL;
+}
+
+/*******************************************************************************
+ * Perform any BL3-1 early platform setup. Here is an opportunity to copy
+ * parameters passed by the calling EL (S-EL1 in BL2 & S-EL3 in BL1) before they
+ * are lost (potentially). This needs to be done before the MMU is initialized
+ * so that the memory layout can be used while creating page tables.
+ * BL2 has flushed this information to memory, so we are guaranteed to pick up
+ * good data.
+ ******************************************************************************/
+void bl31_early_platform_setup(bl31_params_t *from_bl2,
+			       void *plat_params_from_bl2)
+{
+	console_init(MT8173_UART0_BASE, MT8173_UART_CLOCK, MT8173_BAUDRATE);
+
+	VERBOSE("bl31_setup\n");
+
+	assert(from_bl2 != NULL);
+	assert(from_bl2->h.type == PARAM_BL31);
+	assert(from_bl2->h.version >= VERSION_1);
+
+	assert(((unsigned long)plat_params_from_bl2) == MT_BL31_PLAT_PARAM_VAL);
+
+	bl32_ep_info = *from_bl2->bl32_ep_info;
+	bl33_ep_info = *from_bl2->bl33_ep_info;
+}
+
+/*******************************************************************************
+ * Perform any BL3-1 platform setup code
+ ******************************************************************************/
+void bl31_platform_setup(void)
+{
+	platform_setup_cpu();
+
+	plat_delay_timer_init();
+
+	/* Initialize the gic cpu and distributor interfaces */
+	plat_mt_gic_init();
+	arm_gic_setup();
+
+	/* Topologies are best known to the platform. */
+	mt_setup_topology();
+
+	/* Initialize spm at boot time */
+	spm_boot_init();
+}
+
+/*******************************************************************************
+ * Perform the very early platform specific architectural setup here. At the
+ * moment this is only intializes the mmu in a quick and dirty way.
+ ******************************************************************************/
+void bl31_plat_arch_setup(void)
+{
+	plat_cci_init();
+	plat_cci_enable();
+
+	plat_configure_mmu_el3(BL31_RO_BASE,
+			       (BL31_COHERENT_RAM_LIMIT - BL31_RO_BASE),
+			       BL31_RO_BASE,
+			       BL31_RO_LIMIT,
+			       BL31_COHERENT_RAM_BASE,
+			       BL31_COHERENT_RAM_LIMIT);
+}
+
diff --git a/plat/mediatek/mt8173/drivers/gpio/gpio.c b/plat/mediatek/mt8173/drivers/gpio/gpio.c
new file mode 100644
index 00000000..20473b91
--- /dev/null
+++ b/plat/mediatek/mt8173/drivers/gpio/gpio.c
@@ -0,0 +1,198 @@
+/*
+ * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <debug.h>
+#include <gpio.h>
+#include <mmio.h>
+#include <mt8173_def.h>
+#include <pmic_wrap_init.h>
+
+enum {
+	MAX_GPIO_REG_BITS = 16,
+};
+
+struct mt_gpio_obj {
+	struct gpio_regs *reg;
+};
+
+static struct mt_gpio_obj gpio_dat = {
+	.reg = (struct gpio_regs *)(GPIO_BASE),
+};
+
+static struct mt_gpio_obj *gpio_obj = &gpio_dat;
+
+struct mt_gpioext_obj {
+	struct gpioext_regs *reg;
+};
+
+static struct mt_gpioext_obj gpioext_dat = {
+	.reg = (struct gpioext_regs *)(GPIOEXT_BASE),
+};
+
+static struct mt_gpioext_obj *gpioext_obj = &gpioext_dat;
+
+static inline struct mt_gpio_obj *mt_get_gpio_obj(void)
+{
+	return gpio_obj;
+}
+
+static inline struct mt_gpioext_obj *mt_get_gpioext_obj(void)
+{
+	return gpioext_obj;
+}
+
+enum {
+	GPIO_PRO_DIR = 0,
+	GPIO_PRO_DOUT,
+	GPIO_PRO_DIN,
+	GPIO_PRO_PULLEN,
+	GPIO_PRO_PULLSEL,
+	GPIO_PRO_MODE,
+	GPIO_PRO_MAX,
+};
+
+static inline int32_t gpioext_write(uint16_t *addr, int64_t data)
+{
+	return pwrap_write((uint32_t)(uintptr_t)addr, data);
+}
+
+static inline int32_t gpioext_set_bits(uint32_t bit, uint16_t *reg)
+{
+	return gpioext_write(reg, bit);
+}
+
+static int32_t mt_set_gpio_chip(uint32_t pin, uint32_t property, uint32_t val)
+{
+	uint32_t pos = 0;
+	uint32_t bit = 0;
+	struct mt_gpio_obj *obj = mt_get_gpio_obj();
+	uint16_t *reg;
+	uint32_t data = 0;
+
+	if (!obj)
+		return -ERACCESS;
+
+	if (pin >= GPIO_EXTEND_START)
+		return -ERINVAL;
+
+	if (property >= GPIO_PRO_MAX)
+		return -ERINVAL;
+
+	pos = pin / MAX_GPIO_REG_BITS;
+	bit = pin % MAX_GPIO_REG_BITS;
+	data = 1L << bit;
+
+	switch (property) {
+	case GPIO_PRO_DIR:
+		if (val == GPIO_DIR_IN)
+			reg = &obj->reg->dir[pos].rst;
+		else
+			reg = &obj->reg->dir[pos].set;
+		break;
+	case GPIO_PRO_DOUT:
+		if (val == GPIO_OUT_ZERO)
+			reg = &obj->reg->dout[pos].rst;
+		else
+			reg = &obj->reg->dout[pos].set;
+		break;
+	default:
+		return -ERINVAL;
+	}
+
+	mmio_write_16((uintptr_t)reg, data);
+
+	return RSUCCESS;
+}
+
+static int32_t mt_set_gpio_ext(uint32_t pin, uint32_t property, uint32_t val)
+{
+	uint32_t pos = 0;
+	uint32_t bit = 0;
+	struct mt_gpioext_obj *obj = mt_get_gpioext_obj();
+	uint16_t *reg;
+	uint32_t data = 0;
+	int ret = 0;
+
+	if (!obj)
+		return -ERACCESS;
+
+	if (pin >= MAX_GPIO_PIN)
+		return -ERINVAL;
+
+	if (property >= GPIO_PRO_MAX)
+		return -ERINVAL;
+
+	pin -= GPIO_EXTEND_START;
+	pos = pin / MAX_GPIO_REG_BITS;
+	bit = pin % MAX_GPIO_REG_BITS;
+
+	switch (property) {
+	case GPIO_PRO_DIR:
+		if (val == GPIO_DIR_IN)
+			reg = &obj->reg->dir[pos].rst;
+		else
+			reg = &obj->reg->dir[pos].set;
+		break;
+	case GPIO_PRO_DOUT:
+		if (val == GPIO_OUT_ZERO)
+			reg = &obj->reg->dout[pos].rst;
+		else
+			reg = &obj->reg->dout[pos].set;
+		break;
+	default:
+		return -ERINVAL;
+	}
+	data = (1L << bit);
+	ret = gpioext_set_bits(data, reg);
+
+	return ret ? -ERWRAPPER : RSUCCESS;
+}
+
+static void mt_gpio_pin_decrypt(uint32_t *cipher)
+{
+	if ((*cipher & (0x80000000)) == 0)
+		INFO("Pin %u decrypt warning!\n", *cipher);
+	*cipher &= ~(0x80000000);
+}
+
+int32_t mt_set_gpio_out(uint32_t pin, uint32_t output)
+{
+	uint32_t gp = GPIO_PRO_DOUT;
+
+	mt_gpio_pin_decrypt(&pin);
+
+	return (pin >= GPIO_EXTEND_START) ?
+		mt_set_gpio_ext(pin, gp, output) :
+		mt_set_gpio_chip(pin, gp, output);
+}
+
+void gpio_set(uint32_t gpio, int32_t value)
+{
+	mt_set_gpio_out(gpio, value);
+}
diff --git a/plat/mediatek/mt8173/drivers/gpio/gpio.h b/plat/mediatek/mt8173/drivers/gpio/gpio.h
new file mode 100644
index 00000000..ccc99e1d
--- /dev/null
+++ b/plat/mediatek/mt8173/drivers/gpio/gpio.h
@@ -0,0 +1,184 @@
+/*
+ * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef __PLAT_DRIVER_GPIO_H__
+#define __PLAT_DRIVER_GPIO_H__
+
+#include <stdint.h>
+
+enum {
+	GPIOEXT_BASE = 0xC000,
+};
+
+/* Error Code No. */
+enum {
+	RSUCCESS = 0,
+	ERACCESS,
+	ERINVAL,
+	ERWRAPPER,
+};
+
+enum {
+	GPIO_UNSUPPORTED = -1,
+
+	GPIO0,   GPIO1,   GPIO2,   GPIO3,   GPIO4,   GPIO5,   GPIO6,   GPIO7,
+	GPIO8,   GPIO9,   GPIO10,  GPIO11,  GPIO12,  GPIO13,  GPIO14,  GPIO15,
+	GPIO16,  GPIO17,  GPIO18,  GPIO19,  GPIO20,  GPIO21,  GPIO22,  GPIO23,
+	GPIO24,  GPIO25,  GPIO26,  GPIO27,  GPIO28,  GPIO29,  GPIO30,  GPIO31,
+	GPIO32,  GPIO33,  GPIO34,  GPIO35,  GPIO36,  GPIO37,  GPIO38,  GPIO39,
+	GPIO40,  GPIO41,  GPIO42,  GPIO43,  GPIO44,  GPIO45,  GPIO46,  GPIO47,
+	GPIO48,  GPIO49,  GPIO50,  GPIO51,  GPIO52,  GPIO53,  GPIO54,  GPIO55,
+	GPIO56,  GPIO57,  GPIO58,  GPIO59,  GPIO60,  GPIO61,  GPIO62,  GPIO63,
+	GPIO64,  GPIO65,  GPIO66,  GPIO67,  GPIO68,  GPIO69,  GPIO70,  GPIO71,
+	GPIO72,  GPIO73,  GPIO74,  GPIO75,  GPIO76,  GPIO77,  GPIO78,  GPIO79,
+	GPIO80,  GPIO81,  GPIO82,  GPIO83,  GPIO84,  GPIO85,  GPIO86,  GPIO87,
+	GPIO88,  GPIO89,  GPIO90,  GPIO91,  GPIO92,  GPIO93,  GPIO94,  GPIO95,
+	GPIO96,  GPIO97,  GPIO98,  GPIO99,  GPIO100, GPIO101, GPIO102, GPIO103,
+	GPIO104, GPIO105, GPIO106, GPIO107, GPIO108, GPIO109, GPIO110, GPIO111,
+	GPIO112, GPIO113, GPIO114, GPIO115, GPIO116, GPIO117, GPIO118, GPIO119,
+	GPIO120, GPIO121, GPIO122, GPIO123, GPIO124, GPIO125, GPIO126, GPIO127,
+	GPIO128, GPIO129, GPIO130, GPIO131, GPIO132, GPIO133, GPIO134,
+
+	GPIOEXT0,  GPIOEXT1,  GPIOEXT2,  GPIOEXT3,  GPIOEXT4,  GPIOEXT5,
+	GPIOEXT6,  GPIOEXT7,  GPIOEXT8,  GPIOEXT9,  GPIOEXT10, GPIOEXT11,
+	GPIOEXT12, GPIOEXT13, GPIOEXT14, GPIOEXT15, GPIOEXT16, GPIOEXT17,
+	GPIOEXT18, GPIOEXT19, GPIOEXT20, GPIOEXT21, GPIOEXT22, GPIOEXT23,
+	GPIOEXT24, GPIOEXT25, GPIOEXT26, GPIOEXT27, GPIOEXT28, GPIOEXT29,
+	GPIOEXT30, GPIOEXT31, GPIOEXT32, GPIOEXT33, GPIOEXT34, GPIOEXT35,
+	GPIOEXT36, GPIOEXT37, GPIOEXT38, GPIOEXT39, GPIOEXT40,
+
+	GPIO_MAX
+};
+
+#define MAX_GPIO_PIN		GPIO_MAX
+
+#define GPIO_EXTEND_START	GPIOEXT0
+
+/* GPIO DIRECTION */
+enum {
+	GPIO_DIR_UNSUPPORTED = -1,
+	GPIO_DIR_IN = 0,
+	GPIO_DIR_OUT = 1,
+	GPIO_DIR_MAX,
+	GPIO_DIR_DEFAULT = GPIO_DIR_IN,
+};
+
+/* GPIO OUTPUT */
+enum {
+	GPIO_OUT_UNSUPPORTED = -1,
+	GPIO_OUT_ZERO = 0,
+	GPIO_OUT_ONE = 1,
+	GPIO_OUT_MAX,
+	GPIO_OUT_DEFAULT = GPIO_OUT_ZERO,
+	GPIO_DATA_OUT_DEFAULT = GPIO_OUT_ZERO,	/* compatible with DCT */
+};
+
+struct val_regs {
+	uint16_t val;
+	uint16_t _align1;
+	uint16_t set;
+	uint16_t _align2;
+	uint16_t rst;
+	uint16_t _align3[3];
+};
+
+struct gpio_regs {
+	struct val_regs dir[9];		/* 0x0000 ~ 0x008F: 144 bytes */
+	uint8_t rsv00[112];		/* 0x0090 ~ 0x00FF: 112 bytes */
+	struct val_regs pullen[9];	/* 0x0100 ~ 0x018F: 144 bytes */
+	uint8_t rsv01[112];		/* 0x0190 ~ 0x01FF: 112 bytes */
+	struct val_regs pullsel[9];	/* 0x0200 ~ 0x028F: 144 bytes */
+	uint8_t rsv02[112];		/* 0x0290 ~ 0x02FF: 112 bytes */
+	uint8_t rsv03[256];		/* 0x0300 ~ 0x03FF: 256 bytes */
+	struct val_regs dout[9];	/* 0x0400 ~ 0x048F: 144 bytes */
+	uint8_t rsv04[112];		/* 0x0490 ~ 0x04FF: 112 bytes */
+	struct val_regs din[9];		/* 0x0500 ~ 0x058F: 114 bytes */
+	uint8_t rsv05[112];		/* 0x0590 ~ 0x05FF: 112 bytes */
+	struct val_regs mode[27];	/* 0x0600 ~ 0x07AF: 432 bytes */
+	uint8_t rsv06[336];		/* 0x07B0 ~ 0x08FF: 336 bytes */
+	struct val_regs ies[3];		/* 0x0900 ~ 0x092F:  48 bytes */
+	struct val_regs smt[3];		/* 0x0930 ~ 0x095F:  48 bytes */
+	uint8_t rsv07[160];		/* 0x0960 ~ 0x09FF: 160 bytes */
+	struct val_regs tdsel[8];	/* 0x0A00 ~ 0x0A7F: 128 bytes */
+	struct val_regs rdsel[6];	/* 0x0A80 ~ 0x0ADF:  96 bytes */
+	uint8_t rsv08[32];		/* 0x0AE0 ~ 0x0AFF:  32 bytes */
+	struct val_regs drv_mode[10];	/* 0x0B00 ~ 0x0B9F: 160 bytes */
+	uint8_t rsv09[96];		/* 0x0BA0 ~ 0x0BFF:  96 bytes */
+	struct val_regs msdc0_ctrl0;	/* 0x0C00 ~ 0x0C0F:  16 bytes */
+	struct val_regs msdc0_ctrl1;	/* 0x0C10 ~ 0x0C1F:  16 bytes */
+	struct val_regs msdc0_ctrl2;	/* 0x0C20 ~ 0x0C2F:  16 bytes */
+	struct val_regs msdc0_ctrl5;	/* 0x0C30 ~ 0x0C3F:  16 bytes */
+	struct val_regs msdc1_ctrl0;	/* 0x0C40 ~ 0x0C4F:  16 bytes */
+	struct val_regs msdc1_ctrl1;	/* 0x0C50 ~ 0x0C5F:  16 bytes */
+	struct val_regs msdc1_ctrl2;	/* 0x0C60 ~ 0x0C6F:  16 bytes */
+	struct val_regs msdc1_ctrl5;	/* 0x0C70 ~ 0x0C7F:  16 bytes */
+	struct val_regs msdc2_ctrl0;	/* 0x0C80 ~ 0x0C8F:  16 bytes */
+	struct val_regs msdc2_ctrl1;	/* 0x0C90 ~ 0x0C9F:  16 bytes */
+	struct val_regs msdc2_ctrl2;	/* 0x0CA0 ~ 0x0CAF:  16 bytes */
+	struct val_regs msdc2_ctrl5;	/* 0x0CB0 ~ 0x0CBF:  16 bytes */
+	struct val_regs msdc3_ctrl0;	/* 0x0CC0 ~ 0x0CCF:  16 bytes */
+	struct val_regs msdc3_ctrl1;	/* 0x0CD0 ~ 0x0CDF:  16 bytes */
+	struct val_regs msdc3_ctrl2;	/* 0x0CE0 ~ 0x0CEF:  16 bytes */
+	struct val_regs msdc3_ctrl5;	/* 0x0CF0 ~ 0x0CFF:  16 bytes */
+	struct val_regs msdc0_ctrl3;	/* 0x0D00 ~ 0x0D0F:  16 bytes */
+	struct val_regs msdc0_ctrl4;	/* 0x0D10 ~ 0x0D1F:  16 bytes */
+	struct val_regs msdc1_ctrl3;	/* 0x0D20 ~ 0x0D2F:  16 bytes */
+	struct val_regs msdc1_ctrl4;	/* 0x0D30 ~ 0x0D3F:  16 bytes */
+	struct val_regs msdc2_ctrl3;	/* 0x0D40 ~ 0x0D4F:  16 bytes */
+	struct val_regs msdc2_ctrl4;	/* 0x0D50 ~ 0x0D5F:  16 bytes */
+	struct val_regs msdc3_ctrl3;	/* 0x0D60 ~ 0x0D6F:  16 bytes */
+	struct val_regs msdc3_ctrl4;	/* 0x0D70 ~ 0x0D7F:  16 bytes */
+	uint8_t rsv10[64];		/* 0x0D80 ~ 0x0DBF:  64 bytes */
+	struct val_regs exmd_ctrl[1];	/* 0x0DC0 ~ 0x0DCF:  16 bytes */
+	uint8_t rsv11[48];		/* 0x0DD0 ~ 0x0DFF:  48 bytes */
+	struct val_regs kpad_ctrl[2];	/* 0x0E00 ~ 0x0E1F:  32 bytes */
+	struct val_regs hsic_ctrl[4];	/* 0x0E20 ~ 0x0E5F:  64 bytes */
+};
+
+struct ext_val_regs {
+	uint16_t val;
+	uint16_t set;
+	uint16_t rst;
+	uint16_t _align;
+};
+
+struct gpioext_regs {
+	struct ext_val_regs dir[4];	/* 0x0000 ~ 0x001F: 32 bytes */
+	struct ext_val_regs pullen[4];	/* 0x0020 ~ 0x003F: 32 bytes */
+	struct ext_val_regs pullsel[4];	/* 0x0040 ~ 0x005F: 32 bytes */
+	struct ext_val_regs dinv[4];	/* 0x0060 ~ 0x007F: 32 bytes */
+	struct ext_val_regs dout[4];	/* 0x0080 ~ 0x009F: 32 bytes */
+	struct ext_val_regs din[4];	/* 0x00A0 ~ 0x00BF: 32 bytes */
+	struct ext_val_regs mode[10];	/* 0x00C0 ~ 0x010F: 80 bytes */
+};
+
+/* GPIO Driver interface */
+void gpio_set(uint32_t gpio, int32_t value);
+
+#endif /* __PLAT_DRIVER_GPIO_H__ */
diff --git a/plat/mediatek/mt8173/drivers/mtcmos/mtcmos.c b/plat/mediatek/mt8173/drivers/mtcmos/mtcmos.c
new file mode 100644
index 00000000..f7a1b072
--- /dev/null
+++ b/plat/mediatek/mt8173/drivers/mtcmos/mtcmos.c
@@ -0,0 +1,122 @@
+/*
+ * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <mmio.h>
+#include <mt8173_def.h>
+#include <mtcmos.h>
+#include <spm.h>
+
+enum {
+	SRAM_ISOINT_B	= 1U << 6,
+	SRAM_CKISO	= 1U << 5,
+	PWR_CLK_DIS	= 1U << 4,
+	PWR_ON_2ND	= 1U << 3,
+	PWR_ON		= 1U << 2,
+	PWR_ISO		= 1U << 1,
+	PWR_RST_B	= 1U << 0
+};
+
+enum {
+	L1_PDN_ACK	= 1U << 8,
+	L1_PDN		= 1U << 0
+};
+
+enum {
+	LITTLE_CPU3	= 1U << 12,
+	LITTLE_CPU2	= 1U << 11,
+	LITTLE_CPU1	= 1U << 10,
+};
+
+enum {
+	SRAM_PDN           = 0xf << 8,
+	DIS_SRAM_ACK       = 0x1 << 12,
+	AUD_SRAM_ACK       = 0xf << 12,
+};
+
+enum {
+	DIS_PWR_STA_MASK   = 0x1 << 3,
+	AUD_PWR_STA_MASK   = 0x1 << 24,
+};
+
+static void mtcmos_ctrl_little_off(unsigned int linear_id)
+{
+	uint32_t reg_pwr_con;
+	uint32_t reg_l1_pdn;
+	uint32_t bit_cpu;
+
+	switch (linear_id) {
+	case 1:
+		reg_pwr_con = SPM_CA7_CPU1_PWR_CON;
+		reg_l1_pdn = SPM_CA7_CPU1_L1_PDN;
+		bit_cpu = LITTLE_CPU1;
+		break;
+	case 2:
+		reg_pwr_con = SPM_CA7_CPU2_PWR_CON;
+		reg_l1_pdn = SPM_CA7_CPU2_L1_PDN;
+		bit_cpu = LITTLE_CPU2;
+		break;
+	case 3:
+		reg_pwr_con = SPM_CA7_CPU3_PWR_CON;
+		reg_l1_pdn = SPM_CA7_CPU3_L1_PDN;
+		bit_cpu = LITTLE_CPU3;
+		break;
+	default:
+		/* should never come to here */
+		return;
+	}
+
+	/* enable register control */
+	mmio_write_32(SPM_POWERON_CONFIG_SET,
+			(SPM_PROJECT_CODE << 16) | (1U << 0));
+
+	mmio_setbits_32(reg_pwr_con, PWR_ISO);
+	mmio_setbits_32(reg_pwr_con, SRAM_CKISO);
+	mmio_clrbits_32(reg_pwr_con, SRAM_ISOINT_B);
+	mmio_setbits_32(reg_l1_pdn, L1_PDN);
+
+	while (!(mmio_read_32(reg_l1_pdn) & L1_PDN_ACK))
+		continue;
+
+	mmio_clrbits_32(reg_pwr_con, PWR_RST_B);
+	mmio_setbits_32(reg_pwr_con, PWR_CLK_DIS);
+	mmio_clrbits_32(reg_pwr_con, PWR_ON);
+	mmio_clrbits_32(reg_pwr_con, PWR_ON_2ND);
+
+	while ((mmio_read_32(SPM_PWR_STATUS) & bit_cpu) ||
+	       (mmio_read_32(SPM_PWR_STATUS_2ND) & bit_cpu))
+		continue;
+}
+
+void mtcmos_little_cpu_off(void)
+{
+	/* turn off little cpu 1 - 3 */
+	mtcmos_ctrl_little_off(1);
+	mtcmos_ctrl_little_off(2);
+	mtcmos_ctrl_little_off(3);
+}
diff --git a/plat/mediatek/mt8173/drivers/mtcmos/mtcmos.h b/plat/mediatek/mt8173/drivers/mtcmos/mtcmos.h
new file mode 100644
index 00000000..ddcda780
--- /dev/null
+++ b/plat/mediatek/mt8173/drivers/mtcmos/mtcmos.h
@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef __MTCMOS_H__
+#define __MTCMOS_H__
+
+/*
+ * This function will turn off all the little core's power except cpu 0. The
+ * cores in cluster 0 are all powered when the system power on. The System
+ * Power Manager (SPM) will do nothing if it found the core's power was on
+ * during CPU_ON psci call.
+ */
+void mtcmos_little_cpu_off(void);
+
+#endif /* __MTCMOS_H__ */
diff --git a/plat/mediatek/mt8173/drivers/pmic/pmic_wrap_init.c b/plat/mediatek/mt8173/drivers/pmic/pmic_wrap_init.c
new file mode 100644
index 00000000..48908c72
--- /dev/null
+++ b/plat/mediatek/mt8173/drivers/pmic/pmic_wrap_init.c
@@ -0,0 +1,187 @@
+/*
+ * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <debug.h>
+#include <delay_timer.h>
+#include <mmio.h>
+#include <mt8173_def.h>
+#include <pmic_wrap_init.h>
+
+/* pmic wrap module wait_idle and read polling interval (in microseconds) */
+enum {
+	WAIT_IDLE_POLLING_DELAY_US	= 1,
+	READ_POLLING_DELAY_US		= 2
+};
+
+static inline uint32_t wait_for_state_idle(uint32_t timeout_us,
+					   void *wacs_register,
+					   void *wacs_vldclr_register,
+					   uint32_t *read_reg)
+{
+	uint32_t reg_rdata;
+	uint32_t retry;
+
+	retry = (timeout_us + WAIT_IDLE_POLLING_DELAY_US) /
+		WAIT_IDLE_POLLING_DELAY_US;
+
+	do {
+		udelay(WAIT_IDLE_POLLING_DELAY_US);
+		reg_rdata = mmio_read_32((uintptr_t)wacs_register);
+		/* if last read command timeout,clear vldclr bit
+		   read command state machine:FSM_REQ-->wfdle-->WFVLDCLR;
+		   write:FSM_REQ-->idle */
+		switch (((reg_rdata >> RDATA_WACS_FSM_SHIFT) &
+			RDATA_WACS_FSM_MASK)) {
+		case WACS_FSM_WFVLDCLR:
+			mmio_write_32((uintptr_t)wacs_vldclr_register, 1);
+			ERROR("WACS_FSM = PMIC_WRAP_WACS_VLDCLR\n");
+			break;
+		case WACS_FSM_WFDLE:
+			ERROR("WACS_FSM = WACS_FSM_WFDLE\n");
+			break;
+		case WACS_FSM_REQ:
+			ERROR("WACS_FSM = WACS_FSM_REQ\n");
+			break;
+		case WACS_FSM_IDLE:
+			goto done;
+		default:
+			break;
+		}
+
+		retry--;
+	} while (retry);
+
+done:
+	if (!retry)	/* timeout */
+		return E_PWR_WAIT_IDLE_TIMEOUT;
+
+	if (read_reg)
+		*read_reg = reg_rdata;
+	return 0;
+}
+
+static inline uint32_t wait_for_state_ready(uint32_t timeout_us,
+					    void *wacs_register,
+					    uint32_t *read_reg)
+{
+	uint32_t reg_rdata;
+	uint32_t retry;
+
+	retry = (timeout_us + READ_POLLING_DELAY_US) / READ_POLLING_DELAY_US;
+
+	do {
+		udelay(READ_POLLING_DELAY_US);
+		reg_rdata = mmio_read_32((uintptr_t)wacs_register);
+
+		if (((reg_rdata >> RDATA_WACS_FSM_SHIFT) & RDATA_WACS_FSM_MASK)
+		    == WACS_FSM_WFVLDCLR)
+			break;
+
+		retry--;
+	} while (retry);
+
+	if (!retry) {	/* timeout */
+		ERROR("timeout when waiting for idle\n");
+		return E_PWR_WAIT_IDLE_TIMEOUT_READ;
+	}
+
+	if (read_reg)
+		*read_reg = reg_rdata;
+	return 0;
+}
+
+static int32_t pwrap_wacs2(uint32_t write,
+		    uint32_t adr,
+		    uint32_t wdata,
+		    uint32_t *rdata,
+		    uint32_t init_check)
+{
+	uint32_t reg_rdata = 0;
+	uint32_t wacs_write = 0;
+	uint32_t wacs_adr = 0;
+	uint32_t wacs_cmd = 0;
+	uint32_t return_value = 0;
+
+	if (init_check) {
+		reg_rdata = mmio_read_32((uintptr_t)&mt8173_pwrap->wacs2_rdata);
+		/* Prevent someone to used pwrap before pwrap init */
+		if (((reg_rdata >> RDATA_INIT_DONE_SHIFT) &
+		    RDATA_INIT_DONE_MASK) != WACS_INIT_DONE) {
+			ERROR("initialization isn't finished\n");
+			return E_PWR_NOT_INIT_DONE;
+		}
+	}
+	reg_rdata = 0;
+	/* Check IDLE in advance */
+	return_value = wait_for_state_idle(TIMEOUT_WAIT_IDLE,
+				&mt8173_pwrap->wacs2_rdata,
+				&mt8173_pwrap->wacs2_vldclr,
+				0);
+	if (return_value != 0) {
+		ERROR("wait_for_fsm_idle fail,return_value=%d\n", return_value);
+		goto FAIL;
+	}
+	wacs_write = write << 31;
+	wacs_adr = (adr >> 1) << 16;
+	wacs_cmd = wacs_write | wacs_adr | wdata;
+
+	mmio_write_32((uintptr_t)&mt8173_pwrap->wacs2_cmd, wacs_cmd);
+	if (write == 0) {
+		if (NULL == rdata) {
+			ERROR("rdata is a NULL pointer\n");
+			return_value = E_PWR_INVALID_ARG;
+			goto FAIL;
+		}
+		return_value = wait_for_state_ready(TIMEOUT_READ,
+					&mt8173_pwrap->wacs2_rdata,
+					&reg_rdata);
+		if (return_value != 0) {
+			ERROR("wait_for_fsm_vldclr fail,return_value=%d\n",
+				 return_value);
+			goto FAIL;
+		}
+		*rdata = ((reg_rdata >> RDATA_WACS_RDATA_SHIFT)
+			  & RDATA_WACS_RDATA_MASK);
+		mmio_write_32((uintptr_t)&mt8173_pwrap->wacs2_vldclr, 1);
+	}
+FAIL:
+	return return_value;
+}
+
+/* external API for pmic_wrap user */
+
+int32_t pwrap_read(uint32_t adr, uint32_t *rdata)
+{
+	return pwrap_wacs2(0, adr, 0, rdata, 1);
+}
+
+int32_t pwrap_write(uint32_t adr, uint32_t wdata)
+{
+	return pwrap_wacs2(1, adr, wdata, 0, 1);
+}
diff --git a/plat/mediatek/mt8173/drivers/pmic/pmic_wrap_init.h b/plat/mediatek/mt8173/drivers/pmic/pmic_wrap_init.h
new file mode 100644
index 00000000..0b205005
--- /dev/null
+++ b/plat/mediatek/mt8173/drivers/pmic/pmic_wrap_init.h
@@ -0,0 +1,191 @@
+/*
+ * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __PMIC_WRAP_INIT_H__
+#define __PMIC_WRAP_INIT_H__
+
+/* external API */
+int32_t pwrap_read(uint32_t adr, uint32_t *rdata);
+int32_t pwrap_write(uint32_t adr, uint32_t wdata);
+
+static struct mt8173_pmic_wrap_regs *const mt8173_pwrap =
+	(void *)PMIC_WRAP_BASE;
+
+/* timeout setting */
+enum {
+	TIMEOUT_RESET       = 50,	/* us */
+	TIMEOUT_READ        = 50,	/* us */
+	TIMEOUT_WAIT_IDLE   = 50	/* us */
+};
+
+/* PMIC_WRAP registers */
+struct mt8173_pmic_wrap_regs {
+	uint32_t mux_sel;
+	uint32_t wrap_en;
+	uint32_t dio_en;
+	uint32_t sidly;
+	uint32_t rddmy;
+	uint32_t si_ck_con;
+	uint32_t cshext_write;
+	uint32_t cshext_read;
+	uint32_t cslext_start;
+	uint32_t cslext_end;
+	uint32_t staupd_prd;
+	uint32_t staupd_grpen;
+	uint32_t reserved[4];
+	uint32_t staupd_man_trig;
+	uint32_t staupd_sta;
+	uint32_t wrap_sta;
+	uint32_t harb_init;
+	uint32_t harb_hprio;
+	uint32_t hiprio_arb_en;
+	uint32_t harb_sta0;
+	uint32_t harb_sta1;
+	uint32_t man_en;
+	uint32_t man_cmd;
+	uint32_t man_rdata;
+	uint32_t man_vldclr;
+	uint32_t wacs0_en;
+	uint32_t init_done0;
+	uint32_t wacs0_cmd;
+	uint32_t wacs0_rdata;
+	uint32_t wacs0_vldclr;
+	uint32_t wacs1_en;
+	uint32_t init_done1;
+	uint32_t wacs1_cmd;
+	uint32_t wacs1_rdata;
+	uint32_t wacs1_vldclr;
+	uint32_t wacs2_en;
+	uint32_t init_done2;
+	uint32_t wacs2_cmd;
+	uint32_t wacs2_rdata;
+	uint32_t wacs2_vldclr;
+	uint32_t int_en;
+	uint32_t int_flg_raw;
+	uint32_t int_flg;
+	uint32_t int_clr;
+	uint32_t sig_adr;
+	uint32_t sig_mode;
+	uint32_t sig_value;
+	uint32_t sig_errval;
+	uint32_t crc_en;
+	uint32_t timer_en;
+	uint32_t timer_sta;
+	uint32_t wdt_unit;
+	uint32_t wdt_src_en;
+	uint32_t wdt_flg;
+	uint32_t debug_int_sel;
+	uint32_t dvfs_adr0;
+	uint32_t dvfs_wdata0;
+	uint32_t dvfs_adr1;
+	uint32_t dvfs_wdata1;
+	uint32_t dvfs_adr2;
+	uint32_t dvfs_wdata2;
+	uint32_t dvfs_adr3;
+	uint32_t dvfs_wdata3;
+	uint32_t dvfs_adr4;
+	uint32_t dvfs_wdata4;
+	uint32_t dvfs_adr5;
+	uint32_t dvfs_wdata5;
+	uint32_t dvfs_adr6;
+	uint32_t dvfs_wdata6;
+	uint32_t dvfs_adr7;
+	uint32_t dvfs_wdata7;
+	uint32_t spminf_sta;
+	uint32_t cipher_key_sel;
+	uint32_t cipher_iv_sel;
+	uint32_t cipher_en;
+	uint32_t cipher_rdy;
+	uint32_t cipher_mode;
+	uint32_t cipher_swrst;
+	uint32_t dcm_en;
+	uint32_t dcm_dbc_prd;
+};
+
+enum {
+	RDATA_WACS_RDATA_SHIFT = 0,
+	RDATA_WACS_FSM_SHIFT = 16,
+	RDATA_WACS_REQ_SHIFT = 19,
+	RDATA_SYNC_IDLE_SHIFT,
+	RDATA_INIT_DONE_SHIFT,
+	RDATA_SYS_IDLE_SHIFT,
+};
+
+enum {
+	RDATA_WACS_RDATA_MASK = 0xffff,
+	RDATA_WACS_FSM_MASK = 0x7,
+	RDATA_WACS_REQ_MASK = 0x1,
+	RDATA_SYNC_IDLE_MASK = 0x1,
+	RDATA_INIT_DONE_MASK = 0x1,
+	RDATA_SYS_IDLE_MASK = 0x1,
+};
+
+/* WACS_FSM */
+enum {
+	WACS_FSM_IDLE            = 0x00,
+	WACS_FSM_REQ             = 0x02,
+	WACS_FSM_WFDLE           = 0x04,
+	WACS_FSM_WFVLDCLR        = 0x06,
+	WACS_INIT_DONE           = 0x01,
+	WACS_SYNC_IDLE           = 0x01,
+	WACS_SYNC_BUSY           = 0x00
+};
+
+/* error information flag */
+enum {
+	E_PWR_INVALID_ARG             = 1,
+	E_PWR_INVALID_RW              = 2,
+	E_PWR_INVALID_ADDR            = 3,
+	E_PWR_INVALID_WDAT            = 4,
+	E_PWR_INVALID_OP_MANUAL       = 5,
+	E_PWR_NOT_IDLE_STATE          = 6,
+	E_PWR_NOT_INIT_DONE           = 7,
+	E_PWR_NOT_INIT_DONE_READ      = 8,
+	E_PWR_WAIT_IDLE_TIMEOUT       = 9,
+	E_PWR_WAIT_IDLE_TIMEOUT_READ  = 10,
+	E_PWR_INIT_SIDLY_FAIL         = 11,
+	E_PWR_RESET_TIMEOUT           = 12,
+	E_PWR_TIMEOUT                 = 13,
+	E_PWR_INIT_RESET_SPI          = 20,
+	E_PWR_INIT_SIDLY              = 21,
+	E_PWR_INIT_REG_CLOCK          = 22,
+	E_PWR_INIT_ENABLE_PMIC        = 23,
+	E_PWR_INIT_DIO                = 24,
+	E_PWR_INIT_CIPHER             = 25,
+	E_PWR_INIT_WRITE_TEST         = 26,
+	E_PWR_INIT_ENABLE_CRC         = 27,
+	E_PWR_INIT_ENABLE_DEWRAP      = 28,
+	E_PWR_INIT_ENABLE_EVENT       = 29,
+	E_PWR_READ_TEST_FAIL          = 30,
+	E_PWR_WRITE_TEST_FAIL         = 31,
+	E_PWR_SWITCH_DIO              = 32
+};
+
+#endif /* __PMIC_WRAP_INIT_H__ */
diff --git a/plat/mediatek/mt8173/drivers/rtc/rtc.c b/plat/mediatek/mt8173/drivers/rtc/rtc.c
new file mode 100644
index 00000000..e171863d
--- /dev/null
+++ b/plat/mediatek/mt8173/drivers/rtc/rtc.c
@@ -0,0 +1,102 @@
+/*
+ * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <assert.h>
+#include <debug.h>
+#include <delay_timer.h>
+#include <mt8173_def.h>
+#include <pmic_wrap_init.h>
+#include <rtc.h>
+
+/* RTC busy status polling interval and retry count */
+enum {
+	RTC_WRTGR_POLLING_DELAY_MS	= 10,
+	RTC_WRTGR_POLLING_CNT		= 100
+};
+
+static uint16_t RTC_Read(uint32_t addr)
+{
+	uint32_t rdata = 0;
+
+	pwrap_read((uint32_t)addr, &rdata);
+	return (uint16_t)rdata;
+}
+
+static void RTC_Write(uint32_t addr, uint16_t data)
+{
+	pwrap_write((uint32_t)addr, (uint32_t)data);
+}
+
+static inline int32_t rtc_busy_wait(void)
+{
+	uint64_t retry = RTC_WRTGR_POLLING_CNT;
+
+	do {
+		mdelay(RTC_WRTGR_POLLING_DELAY_MS);
+		if (!(RTC_Read(RTC_BBPU) & RTC_BBPU_CBUSY))
+			return 1;
+		retry--;
+	} while (retry);
+
+	ERROR("[RTC] rtc cbusy time out!\n");
+	return 0;
+}
+
+static int32_t Write_trigger(void)
+{
+	RTC_Write(RTC_WRTGR, 1);
+	return rtc_busy_wait();
+}
+
+static int32_t Writeif_unlock(void)
+{
+	RTC_Write(RTC_PROT, RTC_PROT_UNLOCK1);
+	if (!Write_trigger())
+		return 0;
+	RTC_Write(RTC_PROT, RTC_PROT_UNLOCK2);
+	if (!Write_trigger())
+		return 0;
+
+	return 1;
+}
+
+void rtc_bbpu_power_down(void)
+{
+	uint16_t bbpu;
+
+	/* pull PWRBB low */
+	bbpu = RTC_BBPU_KEY | RTC_BBPU_AUTO | RTC_BBPU_PWREN;
+	if (Writeif_unlock()) {
+		RTC_Write(RTC_BBPU, bbpu);
+		if (!Write_trigger())
+			assert(1);
+	} else {
+		assert(1);
+	}
+}
diff --git a/plat/mediatek/mt8173/drivers/rtc/rtc.h b/plat/mediatek/mt8173/drivers/rtc/rtc.h
new file mode 100644
index 00000000..c2138cd8
--- /dev/null
+++ b/plat/mediatek/mt8173/drivers/rtc/rtc.h
@@ -0,0 +1,78 @@
+/*
+ * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __PLAT_DRIVER_RTC_H__
+#define __PLAT_DRIVER_RTC_H__
+
+/* RTC registers */
+enum {
+	RTC_BBPU = 0xE000,
+	RTC_IRQ_STA = 0xE002,
+	RTC_IRQ_EN = 0xE004,
+	RTC_CII_EN = 0xE006
+};
+
+enum {
+	RTC_OSC32CON = 0xE026,
+	RTC_CON = 0xE03E,
+	RTC_WRTGR = 0xE03C
+};
+
+enum {
+	RTC_PDN1 = 0xE02C,
+	RTC_PDN2 = 0xE02E,
+	RTC_SPAR0 = 0xE030,
+	RTC_SPAR1 = 0xE032,
+	RTC_PROT = 0xE036,
+	RTC_DIFF = 0xE038,
+	RTC_CALI = 0xE03A
+};
+
+enum {
+	RTC_PROT_UNLOCK1 = 0x586A,
+	RTC_PROT_UNLOCK2 = 0x9136
+};
+
+enum {
+	RTC_BBPU_PWREN	= 1U << 0,
+	RTC_BBPU_BBPU	= 1U << 2,
+	RTC_BBPU_AUTO	= 1U << 3,
+	RTC_BBPU_CLRPKY	= 1U << 4,
+	RTC_BBPU_RELOAD	= 1U << 5,
+	RTC_BBPU_CBUSY	= 1U << 6
+};
+
+enum {
+	RTC_BBPU_KEY	= 0x43 << 8
+};
+
+void rtc_bbpu_power_down(void);
+
+#endif /* __PLAT_DRIVER_RTC_H__ */
diff --git a/plat/mediatek/mt8173/drivers/spm/spm.c b/plat/mediatek/mt8173/drivers/spm/spm.c
new file mode 100644
index 00000000..f67daea0
--- /dev/null
+++ b/plat/mediatek/mt8173/drivers/spm/spm.c
@@ -0,0 +1,390 @@
+/*
+ * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <bakery_lock.h>
+#include <debug.h>
+#include <mmio.h>
+#include <mt8173_def.h>
+#include <spm.h>
+#include <spm_suspend.h>
+
+/*
+ * System Power Manager (SPM) is a hardware module, which controls cpu or
+ * system power for different power scenarios using different firmware, i.e.,
+ * - spm_hotplug.c for cpu power control in cpu hotplug flow.
+ * - spm_mcdi.c for cpu power control in cpu idle power saving state.
+ * - spm_suspend.c for system power control in system suspend scenario.
+ *
+ * This file provide utility functions common to hotplug, mcdi(idle), suspend
+ * power scenarios. A bakery lock (software lock) is incoporated to protect
+ * certain critical sections to avoid kicking different SPM firmware
+ * concurrently.
+ */
+
+#define SPM_SYSCLK_SETTLE       128	/* 3.9ms */
+
+#if DEBUG
+static int spm_dormant_sta = CPU_DORMANT_RESET;
+#endif
+
+static bakery_lock_t spm_lock __attribute__ ((section("tzfw_coherent_mem")));
+static int spm_hotplug_ready __attribute__ ((section("tzfw_coherent_mem")));
+static int spm_mcdi_ready __attribute__ ((section("tzfw_coherent_mem")));
+static int spm_suspend_ready __attribute__ ((section("tzfw_coherent_mem")));
+
+void spm_lock_init(void)
+{
+	bakery_lock_init(&spm_lock);
+}
+
+void spm_lock_get(void)
+{
+	bakery_lock_get(&spm_lock);
+}
+
+void spm_lock_release(void)
+{
+	bakery_lock_release(&spm_lock);
+}
+
+int is_mcdi_ready(void)
+{
+	return spm_mcdi_ready;
+}
+
+int is_hotplug_ready(void)
+{
+	return spm_hotplug_ready;
+}
+
+int is_suspend_ready(void)
+{
+	return spm_suspend_ready;
+}
+
+void set_mcdi_ready(void)
+{
+	spm_mcdi_ready = 1;
+	spm_hotplug_ready = 0;
+	spm_suspend_ready = 0;
+}
+
+void set_hotplug_ready(void)
+{
+	spm_mcdi_ready = 0;
+	spm_hotplug_ready = 1;
+	spm_suspend_ready = 0;
+}
+
+void set_suspend_ready(void)
+{
+	spm_mcdi_ready = 0;
+	spm_hotplug_ready = 0;
+	spm_suspend_ready = 1;
+}
+
+void clear_all_ready(void)
+{
+	spm_mcdi_ready = 0;
+	spm_hotplug_ready = 0;
+	spm_suspend_ready = 0;
+}
+
+void spm_register_init(void)
+{
+	mmio_write_32(SPM_POWERON_CONFIG_SET, SPM_REGWR_CFG_KEY | SPM_REGWR_EN);
+
+	mmio_write_32(SPM_POWER_ON_VAL0, 0);
+	mmio_write_32(SPM_POWER_ON_VAL1, POWER_ON_VAL1_DEF);
+	mmio_write_32(SPM_PCM_PWR_IO_EN, 0);
+
+	mmio_write_32(SPM_PCM_CON0, CON0_CFG_KEY | CON0_PCM_SW_RESET);
+	mmio_write_32(SPM_PCM_CON0, CON0_CFG_KEY);
+	if (mmio_read_32(SPM_PCM_FSM_STA) != PCM_FSM_STA_DEF)
+		WARN("PCM reset failed\n");
+
+	mmio_write_32(SPM_PCM_CON0, CON0_CFG_KEY | CON0_IM_SLEEP_DVS);
+	mmio_write_32(SPM_PCM_CON1, CON1_CFG_KEY | CON1_EVENT_LOCK_EN |
+		CON1_SPM_SRAM_ISO_B | CON1_SPM_SRAM_SLP_B | CON1_MIF_APBEN);
+	mmio_write_32(SPM_PCM_IM_PTR, 0);
+	mmio_write_32(SPM_PCM_IM_LEN, 0);
+
+	mmio_write_32(SPM_CLK_CON, CC_SYSCLK0_EN_1 | CC_SYSCLK0_EN_0 |
+		CC_SYSCLK1_EN_0 | CC_SRCLKENA_MASK_0 | CC_CLKSQ1_SEL |
+		CC_CXO32K_RM_EN_MD2 | CC_CXO32K_RM_EN_MD1 | CC_MD32_DCM_EN);
+
+	mmio_write_32(SPM_SLEEP_ISR_MASK, 0xff0c);
+	mmio_write_32(SPM_SLEEP_ISR_STATUS, 0xc);
+	mmio_write_32(SPM_PCM_SW_INT_CLEAR, 0xff);
+	mmio_write_32(SPM_MD32_SRAM_CON, 0xff0);
+}
+
+void spm_reset_and_init_pcm(void)
+{
+	unsigned int con1;
+	int i = 0;
+
+	mmio_write_32(SPM_PCM_CON0, CON0_CFG_KEY | CON0_PCM_SW_RESET);
+	mmio_write_32(SPM_PCM_CON0, CON0_CFG_KEY);
+	while (mmio_read_32(SPM_PCM_FSM_STA) != PCM_FSM_STA_DEF) {
+		i++;
+		if (i > 1000) {
+			i = 0;
+			WARN("PCM reset failed\n");
+			break;
+		}
+	}
+
+	mmio_write_32(SPM_PCM_CON0, CON0_CFG_KEY | CON0_IM_SLEEP_DVS);
+
+	con1 = mmio_read_32(SPM_PCM_CON1) &
+		(CON1_PCM_WDT_WAKE_MODE | CON1_PCM_WDT_EN);
+	mmio_write_32(SPM_PCM_CON1, con1 | CON1_CFG_KEY | CON1_EVENT_LOCK_EN |
+		CON1_SPM_SRAM_ISO_B | CON1_SPM_SRAM_SLP_B |
+		CON1_IM_NONRP_EN | CON1_MIF_APBEN);
+}
+
+void spm_init_pcm_register(void)
+{
+	mmio_write_32(SPM_PCM_REG_DATA_INI, mmio_read_32(SPM_POWER_ON_VAL0));
+	mmio_write_32(SPM_PCM_PWR_IO_EN, PCM_RF_SYNC_R0);
+	mmio_write_32(SPM_PCM_PWR_IO_EN, 0);
+
+	mmio_write_32(SPM_PCM_REG_DATA_INI, mmio_read_32(SPM_POWER_ON_VAL1));
+	mmio_write_32(SPM_PCM_PWR_IO_EN, PCM_RF_SYNC_R7);
+	mmio_write_32(SPM_PCM_PWR_IO_EN, 0);
+}
+
+void spm_set_power_control(const struct pwr_ctrl *pwrctrl)
+{
+	mmio_write_32(SPM_AP_STANBY_CON, (!pwrctrl->md32_req_mask << 21) |
+					 (!pwrctrl->mfg_req_mask << 17) |
+					 (!pwrctrl->disp_req_mask << 16) |
+					 (!!pwrctrl->mcusys_idle_mask << 7) |
+					 (!!pwrctrl->ca15top_idle_mask << 6) |
+					 (!!pwrctrl->ca7top_idle_mask << 5) |
+					 (!!pwrctrl->wfi_op << 4));
+	mmio_write_32(SPM_PCM_SRC_REQ, (!!pwrctrl->pcm_apsrc_req << 0));
+	mmio_write_32(SPM_PCM_PASR_DPD_2, 0);
+
+	mmio_clrsetbits_32(SPM_CLK_CON, CC_SRCLKENA_MASK_0,
+		(pwrctrl->srclkenai_mask ? CC_SRCLKENA_MASK_0 : 0));
+
+	mmio_write_32(SPM_SLEEP_CA15_WFI0_EN, !!pwrctrl->ca15_wfi0_en);
+	mmio_write_32(SPM_SLEEP_CA15_WFI1_EN, !!pwrctrl->ca15_wfi1_en);
+	mmio_write_32(SPM_SLEEP_CA15_WFI2_EN, !!pwrctrl->ca15_wfi2_en);
+	mmio_write_32(SPM_SLEEP_CA15_WFI3_EN, !!pwrctrl->ca15_wfi3_en);
+	mmio_write_32(SPM_SLEEP_CA7_WFI0_EN, !!pwrctrl->ca7_wfi0_en);
+	mmio_write_32(SPM_SLEEP_CA7_WFI1_EN, !!pwrctrl->ca7_wfi1_en);
+	mmio_write_32(SPM_SLEEP_CA7_WFI2_EN, !!pwrctrl->ca7_wfi2_en);
+	mmio_write_32(SPM_SLEEP_CA7_WFI3_EN, !!pwrctrl->ca7_wfi3_en);
+}
+
+void spm_set_wakeup_event(const struct pwr_ctrl *pwrctrl)
+{
+	unsigned int val, mask;
+
+	if (pwrctrl->timer_val_cust == 0)
+		val = pwrctrl->timer_val ? pwrctrl->timer_val : PCM_TIMER_MAX;
+	else
+		val = pwrctrl->timer_val_cust;
+
+	mmio_write_32(SPM_PCM_TIMER_VAL, val);
+	mmio_setbits_32(SPM_PCM_CON1, CON1_CFG_KEY);
+
+	if (pwrctrl->wake_src_cust == 0)
+		mask = pwrctrl->wake_src;
+	else
+		mask = pwrctrl->wake_src_cust;
+
+	if (pwrctrl->syspwreq_mask)
+		mask &= ~WAKE_SRC_SYSPWREQ;
+
+	mmio_write_32(SPM_SLEEP_WAKEUP_EVENT_MASK, ~mask);
+	mmio_write_32(SPM_SLEEP_ISR_MASK, 0xfe04);
+}
+
+void spm_get_wakeup_status(struct wake_status *wakesta)
+{
+	wakesta->assert_pc = mmio_read_32(SPM_PCM_REG_DATA_INI);
+	wakesta->r12 = mmio_read_32(SPM_PCM_REG12_DATA);
+	wakesta->raw_sta = mmio_read_32(SPM_SLEEP_ISR_RAW_STA);
+	wakesta->wake_misc = mmio_read_32(SPM_SLEEP_WAKEUP_MISC);
+	wakesta->timer_out = mmio_read_32(SPM_PCM_TIMER_OUT);
+	wakesta->r13 = mmio_read_32(SPM_PCM_REG13_DATA);
+	wakesta->idle_sta = mmio_read_32(SPM_SLEEP_SUBSYS_IDLE_STA);
+	wakesta->debug_flag = mmio_read_32(SPM_PCM_PASR_DPD_3);
+	wakesta->event_reg = mmio_read_32(SPM_PCM_EVENT_REG_STA);
+	wakesta->isr = mmio_read_32(SPM_SLEEP_ISR_STATUS);
+}
+
+void spm_init_event_vector(const struct pcm_desc *pcmdesc)
+{
+	/* init event vector register */
+	mmio_write_32(SPM_PCM_EVENT_VECTOR0, pcmdesc->vec0);
+	mmio_write_32(SPM_PCM_EVENT_VECTOR1, pcmdesc->vec1);
+	mmio_write_32(SPM_PCM_EVENT_VECTOR2, pcmdesc->vec2);
+	mmio_write_32(SPM_PCM_EVENT_VECTOR3, pcmdesc->vec3);
+	mmio_write_32(SPM_PCM_EVENT_VECTOR4, pcmdesc->vec4);
+	mmio_write_32(SPM_PCM_EVENT_VECTOR5, pcmdesc->vec5);
+	mmio_write_32(SPM_PCM_EVENT_VECTOR6, pcmdesc->vec6);
+	mmio_write_32(SPM_PCM_EVENT_VECTOR7, pcmdesc->vec7);
+
+	/* event vector will be enabled by PCM itself */
+}
+
+void spm_kick_im_to_fetch(const struct pcm_desc *pcmdesc)
+{
+	unsigned int ptr = 0, len, con0;
+
+	ptr = (unsigned int)(unsigned long)(pcmdesc->base);
+	len = pcmdesc->size - 1;
+	if (mmio_read_32(SPM_PCM_IM_PTR) != ptr ||
+	    mmio_read_32(SPM_PCM_IM_LEN) != len ||
+	    pcmdesc->sess > 2) {
+		mmio_write_32(SPM_PCM_IM_PTR, ptr);
+		mmio_write_32(SPM_PCM_IM_LEN, len);
+	} else {
+		mmio_setbits_32(SPM_PCM_CON1, CON1_CFG_KEY | CON1_IM_SLAVE);
+	}
+
+	/* kick IM to fetch (only toggle IM_KICK) */
+	con0 = mmio_read_32(SPM_PCM_CON0) & ~(CON0_IM_KICK | CON0_PCM_KICK);
+	mmio_write_32(SPM_PCM_CON0, con0 | CON0_CFG_KEY | CON0_IM_KICK);
+	mmio_write_32(SPM_PCM_CON0, con0 | CON0_CFG_KEY);
+
+	/* kick IM to fetch (only toggle PCM_KICK) */
+	con0 = mmio_read_32(SPM_PCM_CON0) & ~(CON0_IM_KICK | CON0_PCM_KICK);
+	mmio_write_32(SPM_PCM_CON0, con0 | CON0_CFG_KEY | CON0_PCM_KICK);
+	mmio_write_32(SPM_PCM_CON0, con0 | CON0_CFG_KEY);
+}
+
+void spm_set_sysclk_settle(void)
+{
+	mmio_write_32(SPM_CLK_SETTLE, SPM_SYSCLK_SETTLE);
+
+	INFO("settle = %u\n", mmio_read_32(SPM_CLK_SETTLE));
+}
+
+void spm_kick_pcm_to_run(struct pwr_ctrl *pwrctrl)
+{
+	unsigned int con1;
+
+	con1 = mmio_read_32(SPM_PCM_CON1) &
+		~(CON1_PCM_WDT_WAKE_MODE | CON1_PCM_WDT_EN);
+
+	mmio_write_32(SPM_PCM_CON1, CON1_CFG_KEY | con1);
+
+	if (mmio_read_32(SPM_PCM_TIMER_VAL) > PCM_TIMER_MAX)
+		mmio_write_32(SPM_PCM_TIMER_VAL, PCM_TIMER_MAX);
+
+	mmio_write_32(SPM_PCM_WDT_TIMER_VAL,
+		mmio_read_32(SPM_PCM_TIMER_VAL) + PCM_WDT_TIMEOUT);
+
+	mmio_write_32(SPM_PCM_CON1, con1 | CON1_CFG_KEY | CON1_PCM_WDT_EN);
+	mmio_write_32(SPM_PCM_PASR_DPD_0, 0);
+
+	mmio_write_32(SPM_PCM_MAS_PAUSE_MASK, 0xffffffff);
+	mmio_write_32(SPM_PCM_REG_DATA_INI, 0);
+	mmio_clrbits_32(SPM_CLK_CON, CC_DISABLE_DORM_PWR);
+
+	mmio_write_32(SPM_PCM_FLAGS, pwrctrl->pcm_flags);
+
+	mmio_clrsetbits_32(SPM_CLK_CON, CC_LOCK_INFRA_DCM,
+		(pwrctrl->infra_dcm_lock ? CC_LOCK_INFRA_DCM : 0));
+
+	mmio_write_32(SPM_PCM_PWR_IO_EN,
+		(pwrctrl->r0_ctrl_en ? PCM_PWRIO_EN_R0 : 0) |
+		(pwrctrl->r7_ctrl_en ? PCM_PWRIO_EN_R7 : 0));
+}
+
+void spm_clean_after_wakeup(void)
+{
+	mmio_clrsetbits_32(SPM_PCM_CON1, CON1_PCM_WDT_EN, CON1_CFG_KEY);
+
+	mmio_write_32(SPM_PCM_PWR_IO_EN, 0);
+	mmio_write_32(SPM_SLEEP_CPU_WAKEUP_EVENT, 0);
+	mmio_clrsetbits_32(SPM_PCM_CON1, CON1_PCM_TIMER_EN, CON1_CFG_KEY);
+
+	mmio_write_32(SPM_SLEEP_WAKEUP_EVENT_MASK, ~0);
+	mmio_write_32(SPM_SLEEP_ISR_MASK, 0xFF0C);
+	mmio_write_32(SPM_SLEEP_ISR_STATUS, 0xC);
+	mmio_write_32(SPM_PCM_SW_INT_CLEAR, 0xFF);
+}
+
+enum wake_reason_t spm_output_wake_reason(struct wake_status *wakesta)
+{
+	enum wake_reason_t wr;
+	int i;
+
+	wr = WR_UNKNOWN;
+
+	if (wakesta->assert_pc != 0) {
+		ERROR("PCM ASSERT AT %u, r12=0x%x, r13=0x%x, debug_flag=0x%x\n",
+		      wakesta->assert_pc, wakesta->r12, wakesta->r13,
+		      wakesta->debug_flag);
+		return WR_PCM_ASSERT;
+	}
+
+	if (wakesta->r12 & WAKE_SRC_SPM_MERGE) {
+		if (wakesta->wake_misc & WAKE_MISC_PCM_TIMER)
+			wr = WR_PCM_TIMER;
+		if (wakesta->wake_misc & WAKE_MISC_CPU_WAKE)
+			wr = WR_WAKE_SRC;
+	}
+
+	for (i = 1; i < 32; i++) {
+		if (wakesta->r12 & (1U << i))
+			wr = WR_WAKE_SRC;
+	}
+
+	if ((wakesta->event_reg & 0x100000) == 0) {
+		INFO("pcm sleep abort!\n");
+		wr = WR_PCM_ABORT;
+	}
+
+	INFO("timer_out = %u, r12 = 0x%x, r13 = 0x%x, debug_flag = 0x%x\n",
+	     wakesta->timer_out, wakesta->r12, wakesta->r13,
+	     wakesta->debug_flag);
+
+	INFO("raw_sta = 0x%x, idle_sta = 0x%x, event_reg = 0x%x, isr = 0x%x\n",
+	     wakesta->raw_sta, wakesta->idle_sta, wakesta->event_reg,
+	     wakesta->isr);
+
+	INFO("dormant state = %d\n", spm_dormant_sta);
+	return wr;
+}
+
+void spm_boot_init(void)
+{
+	/* Only CPU0 is online during boot, initialize cpu online reserve bit */
+	mmio_write_32(SPM_PCM_RESERVE, 0xFE);
+	spm_lock_init();
+	spm_register_init();
+}
diff --git a/plat/mediatek/mt8173/drivers/spm/spm.h b/plat/mediatek/mt8173/drivers/spm/spm.h
new file mode 100644
index 00000000..f1e76745
--- /dev/null
+++ b/plat/mediatek/mt8173/drivers/spm/spm.h
@@ -0,0 +1,356 @@
+/*
+ * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef __SPM_H__
+#define __SPM_H__
+
+#define SPM_POWERON_CONFIG_SET			(SPM_BASE + 0x000)
+#define SPM_POWER_ON_VAL0			(SPM_BASE + 0x010)
+#define SPM_POWER_ON_VAL1			(SPM_BASE + 0x014)
+#define SPM_CLK_SETTLE				(SPM_BASE + 0x100)
+#define SPM_CA7_CPU1_PWR_CON			(SPM_BASE + 0x218)
+#define SPM_CA7_CPU2_PWR_CON			(SPM_BASE + 0x21c)
+#define SPM_CA7_CPU3_PWR_CON			(SPM_BASE + 0x220)
+#define SPM_CA7_CPU1_L1_PDN			(SPM_BASE + 0x264)
+#define SPM_CA7_CPU2_L1_PDN			(SPM_BASE + 0x26c)
+#define SPM_CA7_CPU3_L1_PDN			(SPM_BASE + 0x274)
+#define SPM_MD32_SRAM_CON			(SPM_BASE + 0x2c8)
+#define SPM_PCM_CON0				(SPM_BASE + 0x310)
+#define SPM_PCM_CON1				(SPM_BASE + 0x314)
+#define SPM_PCM_IM_PTR				(SPM_BASE + 0x318)
+#define SPM_PCM_IM_LEN				(SPM_BASE + 0x31c)
+#define SPM_PCM_REG_DATA_INI			(SPM_BASE + 0x320)
+#define SPM_PCM_EVENT_VECTOR0			(SPM_BASE + 0x340)
+#define SPM_PCM_EVENT_VECTOR1			(SPM_BASE + 0x344)
+#define SPM_PCM_EVENT_VECTOR2			(SPM_BASE + 0x348)
+#define SPM_PCM_EVENT_VECTOR3			(SPM_BASE + 0x34c)
+#define SPM_PCM_MAS_PAUSE_MASK			(SPM_BASE + 0x354)
+#define SPM_PCM_PWR_IO_EN			(SPM_BASE + 0x358)
+#define SPM_PCM_TIMER_VAL			(SPM_BASE + 0x35c)
+#define SPM_PCM_TIMER_OUT			(SPM_BASE + 0x360)
+#define SPM_PCM_REG0_DATA			(SPM_BASE + 0x380)
+#define SPM_PCM_REG1_DATA			(SPM_BASE + 0x384)
+#define SPM_PCM_REG2_DATA			(SPM_BASE + 0x388)
+#define SPM_PCM_REG3_DATA			(SPM_BASE + 0x38c)
+#define SPM_PCM_REG4_DATA			(SPM_BASE + 0x390)
+#define SPM_PCM_REG5_DATA			(SPM_BASE + 0x394)
+#define SPM_PCM_REG6_DATA			(SPM_BASE + 0x398)
+#define SPM_PCM_REG7_DATA			(SPM_BASE + 0x39c)
+#define SPM_PCM_REG8_DATA			(SPM_BASE + 0x3a0)
+#define SPM_PCM_REG9_DATA			(SPM_BASE + 0x3a4)
+#define SPM_PCM_REG10_DATA			(SPM_BASE + 0x3a8)
+#define SPM_PCM_REG11_DATA			(SPM_BASE + 0x3ac)
+#define SPM_PCM_REG12_DATA			(SPM_BASE + 0x3b0)
+#define SPM_PCM_REG13_DATA			(SPM_BASE + 0x3b4)
+#define SPM_PCM_REG14_DATA			(SPM_BASE + 0x3b8)
+#define SPM_PCM_REG15_DATA			(SPM_BASE + 0x3bc)
+#define SPM_PCM_EVENT_REG_STA			(SPM_BASE + 0x3c0)
+#define SPM_PCM_FSM_STA				(SPM_BASE + 0x3c4)
+#define SPM_PCM_IM_HOST_RW_PTR			(SPM_BASE + 0x3c8)
+#define SPM_PCM_IM_HOST_RW_DAT			(SPM_BASE + 0x3cc)
+#define SPM_PCM_EVENT_VECTOR4			(SPM_BASE + 0x3d0)
+#define SPM_PCM_EVENT_VECTOR5			(SPM_BASE + 0x3d4)
+#define SPM_PCM_EVENT_VECTOR6			(SPM_BASE + 0x3d8)
+#define SPM_PCM_EVENT_VECTOR7			(SPM_BASE + 0x3dc)
+#define SPM_PCM_SW_INT_SET			(SPM_BASE + 0x3e0)
+#define SPM_PCM_SW_INT_CLEAR			(SPM_BASE + 0x3e4)
+#define SPM_CLK_CON				(SPM_BASE + 0x400)
+#define SPM_SLEEP_PTPOD2_CON			(SPM_BASE + 0x408)
+#define SPM_APMCU_PWRCTL			(SPM_BASE + 0x600)
+#define SPM_AP_DVFS_CON_SET			(SPM_BASE + 0x604)
+#define SPM_AP_STANBY_CON			(SPM_BASE + 0x608)
+#define SPM_PWR_STATUS				(SPM_BASE + 0x60c)
+#define SPM_PWR_STATUS_2ND			(SPM_BASE + 0x610)
+#define SPM_AP_BSI_REQ				(SPM_BASE + 0x614)
+#define SPM_SLEEP_TIMER_STA			(SPM_BASE + 0x720)
+#define SPM_SLEEP_WAKEUP_EVENT_MASK		(SPM_BASE + 0x810)
+#define SPM_SLEEP_CPU_WAKEUP_EVENT		(SPM_BASE + 0x814)
+#define SPM_SLEEP_MD32_WAKEUP_EVENT_MASK	(SPM_BASE + 0x818)
+#define SPM_PCM_WDT_TIMER_VAL			(SPM_BASE + 0x824)
+#define SPM_PCM_WDT_TIMER_OUT			(SPM_BASE + 0x828)
+#define SPM_PCM_MD32_MAILBOX			(SPM_BASE + 0x830)
+#define SPM_PCM_MD32_IRQ			(SPM_BASE + 0x834)
+#define SPM_SLEEP_ISR_MASK			(SPM_BASE + 0x900)
+#define SPM_SLEEP_ISR_STATUS			(SPM_BASE + 0x904)
+#define SPM_SLEEP_ISR_RAW_STA			(SPM_BASE + 0x910)
+#define SPM_SLEEP_MD32_ISR_RAW_STA		(SPM_BASE + 0x914)
+#define SPM_SLEEP_WAKEUP_MISC			(SPM_BASE + 0x918)
+#define SPM_SLEEP_BUS_PROTECT_RDY		(SPM_BASE + 0x91c)
+#define SPM_SLEEP_SUBSYS_IDLE_STA		(SPM_BASE + 0x920)
+#define SPM_PCM_RESERVE				(SPM_BASE + 0xb00)
+#define SPM_PCM_RESERVE2			(SPM_BASE + 0xb04)
+#define SPM_PCM_FLAGS				(SPM_BASE + 0xb08)
+#define SPM_PCM_SRC_REQ				(SPM_BASE + 0xb0c)
+#define SPM_PCM_DEBUG_CON			(SPM_BASE + 0xb20)
+#define SPM_CA7_CPU0_IRQ_MASK			(SPM_BASE + 0xb30)
+#define SPM_CA7_CPU1_IRQ_MASK			(SPM_BASE + 0xb34)
+#define SPM_CA7_CPU2_IRQ_MASK			(SPM_BASE + 0xb38)
+#define SPM_CA7_CPU3_IRQ_MASK			(SPM_BASE + 0xb3c)
+#define SPM_CA15_CPU0_IRQ_MASK			(SPM_BASE + 0xb40)
+#define SPM_CA15_CPU1_IRQ_MASK			(SPM_BASE + 0xb44)
+#define SPM_CA15_CPU2_IRQ_MASK			(SPM_BASE + 0xb48)
+#define SPM_CA15_CPU3_IRQ_MASK			(SPM_BASE + 0xb4c)
+#define SPM_PCM_PASR_DPD_0			(SPM_BASE + 0xb60)
+#define SPM_PCM_PASR_DPD_1			(SPM_BASE + 0xb64)
+#define SPM_PCM_PASR_DPD_2			(SPM_BASE + 0xb68)
+#define SPM_PCM_PASR_DPD_3			(SPM_BASE + 0xb6c)
+#define SPM_SLEEP_CA7_WFI0_EN			(SPM_BASE + 0xf00)
+#define SPM_SLEEP_CA7_WFI1_EN			(SPM_BASE + 0xf04)
+#define SPM_SLEEP_CA7_WFI2_EN			(SPM_BASE + 0xf08)
+#define SPM_SLEEP_CA7_WFI3_EN			(SPM_BASE + 0xf0c)
+#define SPM_SLEEP_CA15_WFI0_EN			(SPM_BASE + 0xf10)
+#define SPM_SLEEP_CA15_WFI1_EN			(SPM_BASE + 0xf14)
+#define SPM_SLEEP_CA15_WFI2_EN			(SPM_BASE + 0xf18)
+#define SPM_SLEEP_CA15_WFI3_EN			(SPM_BASE + 0xf1c)
+
+#define SPM_PROJECT_CODE	0xb16
+
+#define SPM_REGWR_EN		(1U << 0)
+#define SPM_REGWR_CFG_KEY	(SPM_PROJECT_CODE << 16)
+
+#define SPM_CPU_PDN_DIS		(1U << 0)
+#define SPM_INFRA_PDN_DIS	(1U << 1)
+#define SPM_DDRPHY_PDN_DIS	(1U << 2)
+#define SPM_DUALVCORE_PDN_DIS	(1U << 3)
+#define SPM_PASR_DIS		(1U << 4)
+#define SPM_DPD_DIS		(1U << 5)
+#define SPM_SODI_DIS		(1U << 6)
+#define SPM_MEMPLL_RESET	(1U << 7)
+#define SPM_MAINPLL_PDN_DIS	(1U << 8)
+#define SPM_CPU_DVS_DIS		(1U << 9)
+#define SPM_CPU_DORMANT		(1U << 10)
+#define SPM_EXT_VSEL_GPIO103	(1U << 11)
+#define SPM_DDR_HIGH_SPEED	(1U << 12)
+#define SPM_OPT			(1U << 13)
+
+#define POWER_ON_VAL1_DEF	0x01011820
+#define PCM_FSM_STA_DEF		0x48490
+#define PCM_END_FSM_STA_DEF	0x08490
+#define PCM_END_FSM_STA_MASK	0x3fff0
+#define PCM_HANDSHAKE_SEND1	0xbeefbeef
+
+#define PCM_WDT_TIMEOUT		(30 * 32768)
+#define PCM_TIMER_MAX		(0xffffffff - PCM_WDT_TIMEOUT)
+
+#define CON0_PCM_KICK		(1U << 0)
+#define CON0_IM_KICK		(1U << 1)
+#define CON0_IM_SLEEP_DVS	(1U << 3)
+#define CON0_PCM_SW_RESET	(1U << 15)
+#define CON0_CFG_KEY		(SPM_PROJECT_CODE << 16)
+
+#define CON1_IM_SLAVE		(1U << 0)
+#define CON1_MIF_APBEN		(1U << 3)
+#define CON1_PCM_TIMER_EN	(1U << 5)
+#define CON1_IM_NONRP_EN	(1U << 6)
+#define CON1_PCM_WDT_EN		(1U << 8)
+#define CON1_PCM_WDT_WAKE_MODE	(1U << 9)
+#define CON1_SPM_SRAM_SLP_B	(1U << 10)
+#define CON1_SPM_SRAM_ISO_B	(1U << 11)
+#define CON1_EVENT_LOCK_EN	(1U << 12)
+#define CON1_CFG_KEY		(SPM_PROJECT_CODE << 16)
+
+#define PCM_PWRIO_EN_R0		(1U << 0)
+#define PCM_PWRIO_EN_R7		(1U << 7)
+#define PCM_RF_SYNC_R0		(1U << 16)
+#define PCM_RF_SYNC_R2		(1U << 18)
+#define PCM_RF_SYNC_R6		(1U << 22)
+#define PCM_RF_SYNC_R7		(1U << 23)
+
+#define CC_SYSCLK0_EN_0		(1U << 0)
+#define CC_SYSCLK0_EN_1		(1U << 1)
+#define CC_SYSCLK1_EN_0		(1U << 2)
+#define CC_SYSCLK1_EN_1		(1U << 3)
+#define CC_SYSSETTLE_SEL	(1U << 4)
+#define CC_LOCK_INFRA_DCM	(1U << 5)
+#define CC_SRCLKENA_MASK_0	(1U << 6)
+#define CC_CXO32K_RM_EN_MD1	(1U << 9)
+#define CC_CXO32K_RM_EN_MD2	(1U << 10)
+#define CC_CLKSQ1_SEL		(1U << 12)
+#define CC_DISABLE_DORM_PWR	(1U << 14)
+#define CC_MD32_DCM_EN		(1U << 18)
+
+#define WFI_OP_AND		1
+#define WFI_OP_OR		0
+
+#define WAKE_MISC_PCM_TIMER	(1U << 19)
+#define WAKE_MISC_CPU_WAKE	(1U << 20)
+
+/* define WAKE_SRC_XXX */
+#define WAKE_SRC_SPM_MERGE	(1 << 0)
+#define WAKE_SRC_KP		(1 << 2)
+#define WAKE_SRC_WDT		(1 << 3)
+#define WAKE_SRC_GPT		(1 << 4)
+#define WAKE_SRC_EINT		(1 << 6)
+#define WAKE_SRC_LOW_BAT	(1 << 9)
+#define WAKE_SRC_MD32		(1 << 10)
+#define WAKE_SRC_USB_CD		(1 << 14)
+#define WAKE_SRC_USB_PDN	(1 << 15)
+#define WAKE_SRC_AFE		(1 << 20)
+#define WAKE_SRC_THERM		(1 << 21)
+#define WAKE_SRC_SYSPWREQ	(1 << 24)
+#define WAKE_SRC_SEJ		(1 << 27)
+#define WAKE_SRC_ALL_MD32	(1 << 28)
+#define WAKE_SRC_CPU_IRQ	(1 << 29)
+
+enum wake_reason_t {
+	WR_NONE = 0,
+	WR_UART_BUSY = 1,
+	WR_PCM_ASSERT = 2,
+	WR_PCM_TIMER = 3,
+	WR_PCM_ABORT = 4,
+	WR_WAKE_SRC = 5,
+	WR_UNKNOWN = 6,
+};
+
+struct pwr_ctrl {
+	unsigned int pcm_flags;
+	unsigned int pcm_flags_cust;
+	unsigned int pcm_reserve;
+	unsigned int timer_val;
+	unsigned int timer_val_cust;
+	unsigned int wake_src;
+	unsigned int wake_src_cust;
+	unsigned int wake_src_md32;
+	unsigned short r0_ctrl_en;
+	unsigned short r7_ctrl_en;
+	unsigned short infra_dcm_lock;
+	unsigned short pcm_apsrc_req;
+	unsigned short mcusys_idle_mask;
+	unsigned short ca15top_idle_mask;
+	unsigned short ca7top_idle_mask;
+	unsigned short wfi_op;
+	unsigned short ca15_wfi0_en;
+	unsigned short ca15_wfi1_en;
+	unsigned short ca15_wfi2_en;
+	unsigned short ca15_wfi3_en;
+	unsigned short ca7_wfi0_en;
+	unsigned short ca7_wfi1_en;
+	unsigned short ca7_wfi2_en;
+	unsigned short ca7_wfi3_en;
+	unsigned short disp_req_mask;
+	unsigned short mfg_req_mask;
+	unsigned short md32_req_mask;
+	unsigned short syspwreq_mask;
+	unsigned short srclkenai_mask;
+};
+
+struct wake_status {
+	unsigned int assert_pc;
+	unsigned int r12;
+	unsigned int raw_sta;
+	unsigned int wake_misc;
+	unsigned int timer_out;
+	unsigned int r13;
+	unsigned int idle_sta;
+	unsigned int debug_flag;
+	unsigned int event_reg;
+	unsigned int isr;
+};
+
+struct pcm_desc {
+	const char *version;		/* PCM code version */
+	const unsigned int *base;	/* binary array base */
+	const unsigned int size;	/* binary array size */
+	const unsigned char sess;	/* session number */
+	const unsigned char replace;	/* replace mode */
+
+	unsigned int vec0;		/* event vector 0 config */
+	unsigned int vec1;		/* event vector 1 config */
+	unsigned int vec2;		/* event vector 2 config */
+	unsigned int vec3;		/* event vector 3 config */
+	unsigned int vec4;		/* event vector 4 config */
+	unsigned int vec5;		/* event vector 5 config */
+	unsigned int vec6;		/* event vector 6 config */
+	unsigned int vec7;		/* event vector 7 config */
+};
+
+struct spm_lp_scen {
+	const struct pcm_desc *pcmdesc;
+	struct pwr_ctrl *pwrctrl;
+};
+
+#define EVENT_VEC(event, resume, imme, pc)	\
+	(((pc) << 16) |				\
+	 (!!(imme) << 6) |			\
+	 (!!(resume) << 5) |			\
+	 ((event) & 0x1f))
+
+#define spm_read(addr)		mmio_read_32(addr)
+#define spm_write(addr, val)	mmio_write_32(addr, val)
+
+#define is_cpu_pdn(flags)	(!((flags) & SPM_CPU_PDN_DIS))
+#define is_infra_pdn(flags)	(!((flags) & SPM_INFRA_PDN_DIS))
+#define is_ddrphy_pdn(flags)	(!((flags) & SPM_DDRPHY_PDN_DIS))
+
+static inline void set_pwrctrl_pcm_flags(struct pwr_ctrl *pwrctrl,
+					 unsigned int flags)
+{
+	flags &= ~SPM_EXT_VSEL_GPIO103;
+
+	if (pwrctrl->pcm_flags_cust == 0)
+		pwrctrl->pcm_flags = flags;
+	else
+		pwrctrl->pcm_flags = pwrctrl->pcm_flags_cust;
+}
+
+static inline void set_pwrctrl_pcm_data(struct pwr_ctrl *pwrctrl,
+					unsigned int data)
+{
+	pwrctrl->pcm_reserve = data;
+}
+
+void spm_reset_and_init_pcm(void);
+
+void spm_init_pcm_register(void);	/* init r0 and r7 */
+void spm_set_power_control(const struct pwr_ctrl *pwrctrl);
+void spm_set_wakeup_event(const struct pwr_ctrl *pwrctrl);
+
+void spm_get_wakeup_status(struct wake_status *wakesta);
+void spm_set_sysclk_settle(void);
+void spm_kick_pcm_to_run(struct pwr_ctrl *pwrctrl);
+void spm_clean_after_wakeup(void);
+enum wake_reason_t spm_output_wake_reason(struct wake_status *wakesta);
+void spm_register_init(void);
+void spm_go_to_hotplug(void);
+void spm_init_event_vector(const struct pcm_desc *pcmdesc);
+void spm_kick_im_to_fetch(const struct pcm_desc *pcmdesc);
+void spm_set_sysclk_settle(void);
+int is_mcdi_ready(void);
+int is_hotplug_ready(void);
+int is_suspend_ready(void);
+void set_mcdi_ready(void);
+void set_hotplug_ready(void);
+void set_suspend_ready(void);
+void clear_all_ready(void);
+void spm_lock_init(void);
+void spm_lock_get(void);
+void spm_lock_release(void);
+void spm_boot_init(void);
+
+#endif /* __SPM_H__ */
diff --git a/plat/mediatek/mt8173/drivers/spm/spm_hotplug.c b/plat/mediatek/mt8173/drivers/spm/spm_hotplug.c
new file mode 100644
index 00000000..fccd5a24
--- /dev/null
+++ b/plat/mediatek/mt8173/drivers/spm/spm_hotplug.c
@@ -0,0 +1,292 @@
+/*
+ * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <mmio.h>
+#include <mt8173_def.h>
+#include <platform.h>
+#include <spm.h>
+#include <spm_hotplug.h>
+#include <spm_mcdi.h>
+
+/*
+ * System Power Manager (SPM) is a hardware module, which controls cpu or
+ * system power for different power scenarios using different firmware.
+ * This driver controls the cpu power in cpu hotplug flow.
+ */
+
+#define PCM_HOTPLUG_VALID_MASK	0x00ff0000
+#define PCM_HOTPLUG_VALID_SHIFT	0x8
+
+/**********************************************************
+ * PCM sequence for CPU hotplug
+ **********************************************************/
+static const unsigned int hotplug_binary[] = {
+	0x1900001f, 0x1020020c, 0x1950001f, 0x1020020c, 0xa9400005, 0x00000001,
+	0xe1000005, 0x1910001f, 0x10006720, 0x814c9001, 0xd82000e5, 0x17c07c1f,
+	0x1900001f, 0x10001220, 0x1950001f, 0x10001220, 0xa15f0405, 0xe1000005,
+	0x1900001f, 0x10001228, 0x1950001f, 0x10001228, 0x810f1401, 0xd8200244,
+	0x17c07c1f, 0xe2e0006d, 0xe2e0002d, 0x1a00001f, 0x100062b8, 0x1910001f,
+	0x100062b8, 0xa9000004, 0x00000001, 0xe2000004, 0x1910001f, 0x100062b8,
+	0x81142804, 0xd8200444, 0x17c07c1f, 0xe2e0002c, 0xe2e0003c, 0xe2e0003e,
+	0xe2e0003a, 0xe2e00032, 0x1910001f, 0x1000660c, 0x81079001, 0x1950001f,
+	0x10006610, 0x81479401, 0xa1001404, 0xd8000584, 0x17c07c1f, 0x1900001f,
+	0x10006404, 0x1950001f, 0x10006404, 0xa1568405, 0xe1000005, 0xf0000000,
+	0x17c07c1f, 0x1900001f, 0x10006404, 0x1950001f, 0x10006404, 0x89400005,
+	0x0000dfff, 0xe1000005, 0xe2e00036, 0xe2e0003e, 0x1910001f, 0x1000660c,
+	0x81079001, 0x1950001f, 0x10006610, 0x81479401, 0x81001404, 0xd82008c4,
+	0x17c07c1f, 0xe2e0002e, 0x1a00001f, 0x100062b8, 0x1910001f, 0x100062b8,
+	0x89000004, 0x0000fffe, 0xe2000004, 0x1910001f, 0x100062b8, 0x81142804,
+	0xd8000ae4, 0x17c07c1f, 0xe2e0006e, 0xe2e0004e, 0xe2e0004c, 0xe2e0004d,
+	0x1900001f, 0x10001220, 0x1950001f, 0x10001220, 0x89400005, 0xbfffffff,
+	0xe1000005, 0x1900001f, 0x10001228, 0x1950001f, 0x10001228, 0x810f1401,
+	0xd8000ce4, 0x17c07c1f, 0x1900001f, 0x1020020c, 0x1950001f, 0x1020020c,
+	0x89400005, 0xfffffffe, 0xe1000005, 0xf0000000, 0x17c07c1f, 0x1212841f,
+	0xe2e00036, 0xe2e0003e, 0x1380201f, 0xe2e0003c, 0xe2a00000, 0x1b80001f,
+	0x20000080, 0xe2e0007c, 0x1b80001f, 0x20000003, 0xe2e0005c, 0xe2e0004c,
+	0xe2e0004d, 0xf0000000, 0x17c07c1f, 0xe2e0004f, 0xe2e0006f, 0xe2e0002f,
+	0xe2a00001, 0x1b80001f, 0x20000080, 0xe2e0002e, 0xe2e0003e, 0xe2e00032,
+	0xf0000000, 0x17c07c1f, 0x1212841f, 0xe2e00026, 0xe2e0002e, 0x1380201f,
+	0x1a00001f, 0x100062b4, 0x1910001f, 0x100062b4, 0x81322804, 0xe2000004,
+	0x81202804, 0xe2000004, 0x1b80001f, 0x20000034, 0x1910001f, 0x100062b4,
+	0x81142804, 0xd8001404, 0x17c07c1f, 0xe2e0000e, 0xe2e0000c, 0xe2e0000d,
+	0xf0000000, 0x17c07c1f, 0xe2e0002d, 0x1a00001f, 0x100062b4, 0x1910001f,
+	0x100062b4, 0xa1002804, 0xe2000004, 0xa1122804, 0xe2000004, 0x1b80001f,
+	0x20000080, 0x1910001f, 0x100062b4, 0x81142804, 0xd82016a4, 0x17c07c1f,
+	0xe2e0002f, 0xe2e0002b, 0xe2e00023, 0x1380201f, 0xe2e00022, 0xf0000000,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x1840001f, 0x00000001, 0x1840001f, 0x00000001,
+	0x1840001f, 0x00000001, 0xa1d48407, 0x1b00001f, 0x2f7be75f, 0xe8208000,
+	0x10006354, 0xfffe7b47, 0xa1d10407, 0x1b80001f, 0x20000020, 0x17c07c1f,
+	0x1910001f, 0x10006b00, 0x81461001, 0xb14690a1, 0xd82044e5, 0x17c07c1f,
+	0x1910001f, 0x10006610, 0x81079001, 0xd80044e4, 0x17c07c1f, 0x1990001f,
+	0x10006b00, 0x81421801, 0x82429801, 0x81402405, 0xd80044e5, 0x17c07c1f,
+	0x1a40001f, 0x100062b0, 0x1280041f, 0xc24007a0, 0x17c07c1f, 0x1910001f,
+	0x10006b00, 0x81449001, 0xd8204be5, 0x17c07c1f, 0x1910001f, 0x10006b00,
+	0x81009001, 0xd8204984, 0x17c07c1f, 0x1910001f, 0x10006610, 0x81051001,
+	0xd8204be4, 0x17c07c1f, 0x1910001f, 0x10006720, 0x81489001, 0xd82046c5,
+	0x17c07c1f, 0x1a40001f, 0x10006218, 0x1a80001f, 0x10006264, 0xc24010e0,
+	0x17c07c1f, 0x1910001f, 0x1000660c, 0x81051001, 0x1950001f, 0x10006610,
+	0x81451401, 0xa1001404, 0xd8004824, 0x17c07c1f, 0xd0004b00, 0x17c07c1f,
+	0x17c07c1f, 0x1910001f, 0x10006610, 0x81051001, 0xd8004be4, 0x17c07c1f,
+	0x1a40001f, 0x10006218, 0x1a80001f, 0x10006264, 0xc2400ee0, 0x17c07c1f,
+	0x1910001f, 0x10006b00, 0x89000004, 0xfffffdff, 0x1940001f, 0x10006b00,
+	0xe1400004, 0x17c07c1f, 0x1910001f, 0x10006b00, 0x81451001, 0xd8205305,
+	0x17c07c1f, 0x1910001f, 0x10006b00, 0x81011001, 0xd82050a4, 0x17c07c1f,
+	0x1910001f, 0x10006610, 0x81059001, 0xd8205304, 0x17c07c1f, 0x1910001f,
+	0x10006720, 0x81491001, 0xd8204de5, 0x17c07c1f, 0x1a40001f, 0x1000621c,
+	0x1a80001f, 0x1000626c, 0xc24010e0, 0x17c07c1f, 0x1910001f, 0x1000660c,
+	0x81059001, 0x1950001f, 0x10006610, 0x81459401, 0xa1001404, 0xd8004f44,
+	0x17c07c1f, 0xd0005220, 0x17c07c1f, 0x17c07c1f, 0x1910001f, 0x10006610,
+	0x81059001, 0xd8005304, 0x17c07c1f, 0x1a40001f, 0x1000621c, 0x1a80001f,
+	0x1000626c, 0xc2400ee0, 0x17c07c1f, 0x1910001f, 0x10006b00, 0x89000004,
+	0xfffffbff, 0x1940001f, 0x10006b00, 0xe1400004, 0x17c07c1f, 0x1910001f,
+	0x10006b00, 0x81459001, 0xd8205a25, 0x17c07c1f, 0x1910001f, 0x10006b00,
+	0x81019001, 0xd82057c4, 0x17c07c1f, 0x1910001f, 0x10006610, 0x81061001,
+	0xd8205a24, 0x17c07c1f, 0x1910001f, 0x10006720, 0x81499001, 0xd8205505,
+	0x17c07c1f, 0x1a40001f, 0x10006220, 0x1a80001f, 0x10006274, 0xc24010e0,
+	0x17c07c1f, 0x1910001f, 0x1000660c, 0x81061001, 0x1950001f, 0x10006610,
+	0x81461401, 0xa1001404, 0xd8005664, 0x17c07c1f, 0xd0005940, 0x17c07c1f,
+	0x17c07c1f, 0x1910001f, 0x10006610, 0x81061001, 0xd8005a24, 0x17c07c1f,
+	0x1a40001f, 0x10006220, 0x1a80001f, 0x10006274, 0xc2400ee0, 0x17c07c1f,
+	0x1910001f, 0x10006b00, 0x89000004, 0xfffff7ff, 0x1940001f, 0x10006b00,
+	0xe1400004, 0x17c07c1f, 0x1910001f, 0x10006b00, 0x81461001, 0xd8206185,
+	0x17c07c1f, 0x1910001f, 0x10006b00, 0x81021001, 0xd8205ec4, 0x17c07c1f,
+	0x1910001f, 0x10006610, 0x81081001, 0xd8206184, 0x17c07c1f, 0x1910001f,
+	0x10006720, 0x814a1001, 0xd8205c25, 0x17c07c1f, 0x1a40001f, 0x100062a0,
+	0x1280041f, 0xc2401540, 0x17c07c1f, 0x1910001f, 0x1000660c, 0x81081001,
+	0x1950001f, 0x10006610, 0x81481401, 0xa1001404, 0xd8005d64, 0x17c07c1f,
+	0xd00060a0, 0x17c07c1f, 0x17c07c1f, 0x1910001f, 0x10006610, 0x81479001,
+	0x81881001, 0x69a00006, 0x00000000, 0x81401805, 0xd8206185, 0x17c07c1f,
+	0x1a40001f, 0x100062a0, 0x1280041f, 0xc2401240, 0x17c07c1f, 0x1910001f,
+	0x10006b00, 0x89000004, 0xffffefff, 0x1940001f, 0x10006b00, 0xe1400004,
+	0x17c07c1f, 0x1910001f, 0x10006b00, 0x81469001, 0xd82068e5, 0x17c07c1f,
+	0x1910001f, 0x10006b00, 0x81029001, 0xd8206624, 0x17c07c1f, 0x1910001f,
+	0x10006610, 0x81089001, 0xd82068e4, 0x17c07c1f, 0x1910001f, 0x10006720,
+	0x814a9001, 0xd8206385, 0x17c07c1f, 0x1a40001f, 0x100062a4, 0x1290841f,
+	0xc2401540, 0x17c07c1f, 0x1910001f, 0x1000660c, 0x81089001, 0x1950001f,
+	0x10006610, 0x81489401, 0xa1001404, 0xd80064c4, 0x17c07c1f, 0xd0006800,
+	0x17c07c1f, 0x17c07c1f, 0x1910001f, 0x10006610, 0x81479001, 0x81889001,
+	0x69a00006, 0x00000000, 0x81401805, 0xd82068e5, 0x17c07c1f, 0x1a40001f,
+	0x100062a4, 0x1290841f, 0xc2401240, 0x17c07c1f, 0x1910001f, 0x10006b00,
+	0x89000004, 0xffffdfff, 0x1940001f, 0x10006b00, 0xe1400004, 0x1910001f,
+	0x10006610, 0x81479001, 0x81881001, 0x69600005, 0x00000000, 0xa1401805,
+	0x81889001, 0xa1401805, 0xd8006bc5, 0x17c07c1f, 0x1910001f, 0x10006b00,
+	0x81421001, 0x82429001, 0x82802405, 0xd8206bca, 0x17c07c1f, 0x1a40001f,
+	0x100062b0, 0x1280041f, 0xc2400000, 0x17c07c1f, 0x1990001f, 0x10006b00,
+	0x89800006, 0x00003f00, 0x69200006, 0x00000000, 0xd82041e4, 0x17c07c1f,
+	0x1990001f, 0x10006320, 0x69200006, 0xbeefbeef, 0xd8006dc4, 0x17c07c1f,
+	0xd00041e0, 0x17c07c1f, 0x1910001f, 0x10006358, 0x810b1001, 0xd8006dc4,
+	0x17c07c1f, 0x1980001f, 0xdeaddead, 0x19c0001f, 0x01411820, 0xf0000000
+};
+static const struct pcm_desc hotplug_pcm = {
+	.version	= "pcm_power_down_mt8173_V37",
+	.base		= hotplug_binary,
+	.size		= 888,
+	.sess		= 2,
+	.replace	= 0,
+};
+
+static struct pwr_ctrl hotplug_ctrl = {
+	.wake_src = 0,
+	.wake_src_md32 = 0,
+	.wfi_op = WFI_OP_OR,
+	.mcusys_idle_mask = 1,
+	.ca7top_idle_mask = 1,
+	.ca15top_idle_mask = 1,
+	.disp_req_mask = 1,
+	.mfg_req_mask = 1,
+	.md32_req_mask = 1,
+	.syspwreq_mask = 1,
+	.pcm_flags = 0,
+};
+
+static const struct spm_lp_scen spm_hotplug = {
+	.pcmdesc = &hotplug_pcm,
+	.pwrctrl = &hotplug_ctrl,
+};
+
+void spm_go_to_hotplug(void)
+{
+	const struct pcm_desc *pcmdesc = spm_hotplug.pcmdesc;
+	struct pwr_ctrl *pwrctrl = spm_hotplug.pwrctrl;
+
+	set_pwrctrl_pcm_flags(pwrctrl, 0);
+	spm_reset_and_init_pcm();
+	spm_kick_im_to_fetch(pcmdesc);
+	spm_set_power_control(pwrctrl);
+	spm_set_wakeup_event(pwrctrl);
+	spm_kick_pcm_to_run(pwrctrl);
+}
+
+void spm_clear_hotplug(void)
+{
+	/* Inform SPM that CPU wants to program CPU_WAKEUP_EVENT and
+	 * DISABLE_CPU_DROM */
+
+	mmio_write_32(SPM_PCM_REG_DATA_INI, PCM_HANDSHAKE_SEND1);
+	mmio_write_32(SPM_PCM_PWR_IO_EN, PCM_RF_SYNC_R6);
+	mmio_write_32(SPM_PCM_PWR_IO_EN, 0);
+
+	/* Wait SPM's response, can't use sleep api */
+	while ((mmio_read_32(SPM_PCM_FSM_STA) & PCM_END_FSM_STA_MASK)
+		!= PCM_END_FSM_STA_DEF)
+		;
+
+	/* no hotplug pcm running */
+	clear_all_ready();
+}
+
+void spm_hotplug_on(unsigned long mpidr)
+{
+	unsigned long linear_id;
+
+	linear_id = platform_get_core_pos(mpidr);
+	spm_lock_get();
+	if (is_hotplug_ready() == 0) {
+		spm_mcdi_wakeup_all_cores();
+		mmio_clrbits_32(SPM_PCM_RESERVE, PCM_HOTPLUG_VALID_MASK);
+		spm_go_to_hotplug();
+		set_hotplug_ready();
+	}
+	/* turn on CPUx */
+	mmio_clrsetbits_32(SPM_PCM_RESERVE,
+		PCM_HOTPLUG_VALID_MASK | (1 << linear_id),
+		1 << (linear_id + PCM_HOTPLUG_VALID_SHIFT));
+	spm_lock_release();
+}
+
+void spm_hotplug_off(unsigned long mpidr)
+{
+	unsigned long linear_id;
+
+	linear_id = platform_get_core_pos(mpidr);
+	spm_lock_get();
+	if (is_hotplug_ready() == 0) {
+		spm_mcdi_wakeup_all_cores();
+		mmio_clrbits_32(SPM_PCM_RESERVE, PCM_HOTPLUG_VALID_MASK);
+		spm_go_to_hotplug();
+		set_hotplug_ready();
+	}
+	mmio_clrsetbits_32(SPM_PCM_RESERVE, PCM_HOTPLUG_VALID_MASK,
+		(1 << linear_id) |
+		(1 << (linear_id + PCM_HOTPLUG_VALID_SHIFT)));
+	spm_lock_release();
+}
diff --git a/plat/mediatek/mt8173/drivers/spm/spm_hotplug.h b/plat/mediatek/mt8173/drivers/spm/spm_hotplug.h
new file mode 100644
index 00000000..fa90ab91
--- /dev/null
+++ b/plat/mediatek/mt8173/drivers/spm/spm_hotplug.h
@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef __SPM_HOTPLUG_H__
+#define __SPM_HOTPLUG_H__
+
+void spm_clear_hotplug(void);
+void spm_hotplug_off(unsigned long mpidr);
+void spm_hotplug_on(unsigned long mpidr);
+
+#endif /* __SPM_HOTPLUG_H__ */
diff --git a/plat/mediatek/mt8173/drivers/spm/spm_mcdi.c b/plat/mediatek/mt8173/drivers/spm/spm_mcdi.c
new file mode 100644
index 00000000..11f4a4a6
--- /dev/null
+++ b/plat/mediatek/mt8173/drivers/spm/spm_mcdi.c
@@ -0,0 +1,435 @@
+/*
+ * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <arch.h>
+#include <debug.h>
+#include <mmio.h>
+#include <mt8173_def.h>
+#include <platform.h>
+#include <platform_def.h>
+#include <spm.h>
+#include <spm_hotplug.h>
+#include <spm_mcdi.h>
+
+/*
+ * System Power Manager (SPM) is a hardware module, which controls cpu or
+ * system power for different power scenarios using different firmware.
+ * This driver controls the cpu power in cpu idle power saving state.
+ */
+
+#define WAKE_SRC_FOR_MCDI	(WAKE_SRC_SYSPWREQ | WAKE_SRC_CPU_IRQ)
+#define PCM_MCDI_HANDSHAKE_SYNC	0xbeefbeef
+#define PCM_MCDI_HANDSHAKE_ACK	0xdeaddead
+#define PCM_MCDI_UPDATE_INFORM	0xabcdabcd
+#define PCM_MCDI_CKECK_DONE	0x12345678
+#define PCM_MCDI_ALL_CORE_AWAKE	0x0
+#define PCM_MCDI_OFFLOADED	0xaa55aa55
+
+static const unsigned int mcdi_binary[] = {
+	0x1212841f, 0xe2e00036, 0xe2e0003e, 0x1380201f, 0xe2e0003c, 0xe2a00000,
+	0x1b80001f, 0x20000080, 0xe2e0007c, 0x1b80001f, 0x20000003, 0xe2e0005c,
+	0xe2e0004c, 0xe2e0004d, 0xf0000000, 0x17c07c1f, 0xe2e0004f, 0xe2e0006f,
+	0xe2e0002f, 0xe2a00001, 0x1b80001f, 0x20000080, 0xe2e0002e, 0xe2e0003e,
+	0xe2e00032, 0xf0000000, 0x17c07c1f, 0x1212841f, 0xe2e00026, 0xe2e0002e,
+	0x1380201f, 0x1a00001f, 0x100062b4, 0x1910001f, 0x100062b4, 0x81322804,
+	0xe2000004, 0x81202804, 0xe2000004, 0x1b80001f, 0x20000034, 0x1910001f,
+	0x100062b4, 0x81142804, 0xd8000524, 0x17c07c1f, 0xe2e0000e, 0xe2e0000c,
+	0xe2e0000d, 0xf0000000, 0x17c07c1f, 0xe2e0002d, 0x1a00001f, 0x100062b4,
+	0x1910001f, 0x100062b4, 0xa1002804, 0xe2000004, 0xa1122804, 0xe2000004,
+	0x1b80001f, 0x20000080, 0x1910001f, 0x100062b4, 0x81142804, 0xd82007c4,
+	0x17c07c1f, 0xe2e0002f, 0xe2e0002b, 0xe2e00023, 0x1380201f, 0xe2e00022,
+	0xf0000000, 0x17c07c1f, 0x18c0001f, 0x10006b6c, 0x1910001f, 0x10006b6c,
+	0xa1002804, 0xe0c00004, 0xf0000000, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x1840001f, 0x00000001, 0x11407c1f, 0xe8208000,
+	0x10006b6c, 0xa0000000, 0xe8208000, 0x10006310, 0x0b160008, 0x1900001f,
+	0x000f7bde, 0x1a00001f, 0x10200268, 0xe2000004, 0xe8208000, 0x10006600,
+	0x00000000, 0xc2800940, 0x1280041f, 0x1b00001f, 0x21000001, 0x1b80001f,
+	0xd0010000, 0xc2800940, 0x1290841f, 0x69200006, 0xbeefbeef, 0xd8204764,
+	0x17c07c1f, 0xc2800940, 0x1291041f, 0x1910001f, 0x10006358, 0x810b1001,
+	0xd80043e4, 0x17c07c1f, 0x1980001f, 0xdeaddead, 0x69200006, 0xabcdabcd,
+	0xd82044c4, 0x17c07c1f, 0xc2800940, 0x1291841f, 0x88900001, 0x10006814,
+	0x1910001f, 0x10006400, 0x81271002, 0x1880001f, 0x10006600, 0xe0800004,
+	0x1910001f, 0x10006358, 0x810b1001, 0xd8004684, 0x17c07c1f, 0x1980001f,
+	0x12345678, 0x60a07c05, 0x89100002, 0x10006600, 0x80801001, 0xd8007142,
+	0x17c07c1f, 0xc2800940, 0x1292041f, 0x1a10001f, 0x10006720, 0x82002001,
+	0x82201408, 0xd8204a08, 0x17c07c1f, 0x1a40001f, 0x10006200, 0x1a80001f,
+	0x1000625c, 0xc2400200, 0x17c07c1f, 0xa1400405, 0xc2800940, 0x1292841f,
+	0x1a10001f, 0x10006720, 0x8200a001, 0x82209408, 0xd8204be8, 0x17c07c1f,
+	0x1a40001f, 0x10006218, 0x1a80001f, 0x10006264, 0xc2400200, 0x17c07c1f,
+	0xa1508405, 0xc2800940, 0x1293041f, 0x1a10001f, 0x10006720, 0x82012001,
+	0x82211408, 0xd8204dc8, 0x17c07c1f, 0x1a40001f, 0x1000621c, 0x1a80001f,
+	0x1000626c, 0xc2400200, 0x17c07c1f, 0xa1510405, 0x1a10001f, 0x10006720,
+	0x8201a001, 0x82219408, 0xd8204f68, 0x17c07c1f, 0x1a40001f, 0x10006220,
+	0x1a80001f, 0x10006274, 0xc2400200, 0x17c07c1f, 0xa1518405, 0x1a10001f,
+	0x10006720, 0x82022001, 0x82221408, 0xd82050e8, 0x17c07c1f, 0x1a40001f,
+	0x100062a0, 0x1280041f, 0xc2400660, 0x17c07c1f, 0xa1520405, 0x1a10001f,
+	0x10006720, 0x8202a001, 0x82229408, 0xd8205268, 0x17c07c1f, 0x1a40001f,
+	0x100062a4, 0x1290841f, 0xc2400660, 0x17c07c1f, 0xa1528405, 0x1a10001f,
+	0x10006720, 0x82032001, 0x82231408, 0xd82053e8, 0x17c07c1f, 0x1a40001f,
+	0x100062a8, 0x1291041f, 0xc2400660, 0x17c07c1f, 0xa1530405, 0x1a10001f,
+	0x10006720, 0x8203a001, 0x82239408, 0xd8205568, 0x17c07c1f, 0x1a40001f,
+	0x100062ac, 0x1291841f, 0xc2400660, 0x17c07c1f, 0xa1538405, 0x1b80001f,
+	0x20000208, 0xd82070cc, 0x17c07c1f, 0x81001401, 0xd8205964, 0x17c07c1f,
+	0x1a10001f, 0x10006918, 0x81002001, 0xb1042081, 0xb1003081, 0xb10c3081,
+	0xd8205964, 0x17c07c1f, 0x1a40001f, 0x10006200, 0x1a80001f, 0x1000625c,
+	0xc2400000, 0x17c07c1f, 0x89400005, 0xfffffffe, 0xe8208000, 0x10006f00,
+	0x00000000, 0xe8208000, 0x10006b30, 0x00000000, 0xe8208000, 0x100063e0,
+	0x00000001, 0x81009401, 0xd8205cc4, 0x17c07c1f, 0x1a10001f, 0x10006918,
+	0x8100a001, 0xb104a081, 0xb1003081, 0xd8205cc4, 0x17c07c1f, 0x1a40001f,
+	0x10006218, 0x1a80001f, 0x10006264, 0xc2400000, 0x17c07c1f, 0x89400005,
+	0xfffffffd, 0xe8208000, 0x10006f04, 0x00000000, 0xe8208000, 0x10006b34,
+	0x00000000, 0xe8208000, 0x100063e0, 0x00000002, 0x81011401, 0xd8206024,
+	0x17c07c1f, 0x1a10001f, 0x10006918, 0x81012001, 0xb1052081, 0xb1003081,
+	0xd8206024, 0x17c07c1f, 0x1a40001f, 0x1000621c, 0x1a80001f, 0x1000626c,
+	0xc2400000, 0x17c07c1f, 0x89400005, 0xfffffffb, 0xe8208000, 0x10006f08,
+	0x00000000, 0xe8208000, 0x10006b38, 0x00000000, 0xe8208000, 0x100063e0,
+	0x00000004, 0x81019401, 0xd8206384, 0x17c07c1f, 0x1a10001f, 0x10006918,
+	0x8101a001, 0xb105a081, 0xb1003081, 0xd8206384, 0x17c07c1f, 0x1a40001f,
+	0x10006220, 0x1a80001f, 0x10006274, 0xc2400000, 0x17c07c1f, 0x89400005,
+	0xfffffff7, 0xe8208000, 0x10006f0c, 0x00000000, 0xe8208000, 0x10006b3c,
+	0x00000000, 0xe8208000, 0x100063e0, 0x00000008, 0x81021401, 0xd82066c4,
+	0x17c07c1f, 0x1a10001f, 0x10006918, 0x81022001, 0xb1062081, 0xb1003081,
+	0xd82066c4, 0x17c07c1f, 0x1a40001f, 0x100062a0, 0x1280041f, 0xc2400360,
+	0x17c07c1f, 0x89400005, 0xffffffef, 0xe8208000, 0x10006f10, 0x00000000,
+	0xe8208000, 0x10006b40, 0x00000000, 0xe8208000, 0x100063e0, 0x00000010,
+	0x81029401, 0xd8206a04, 0x17c07c1f, 0x1a10001f, 0x10006918, 0x8102a001,
+	0xb106a081, 0xb1003081, 0xd8206a04, 0x17c07c1f, 0x1a40001f, 0x100062a4,
+	0x1290841f, 0xc2400360, 0x17c07c1f, 0x89400005, 0xffffffdf, 0xe8208000,
+	0x10006f14, 0x00000000, 0xe8208000, 0x10006b44, 0x00000000, 0xe8208000,
+	0x100063e0, 0x00000020, 0x81031401, 0xd8206d44, 0x17c07c1f, 0x1a10001f,
+	0x10006918, 0x81032001, 0xb1072081, 0xb1003081, 0xd8206d44, 0x17c07c1f,
+	0x1a40001f, 0x100062a8, 0x1291041f, 0xc2400360, 0x17c07c1f, 0x89400005,
+	0xffffffbf, 0xe8208000, 0x10006f18, 0x00000000, 0xe8208000, 0x10006b48,
+	0x00000000, 0xe8208000, 0x100063e0, 0x00000040, 0x81039401, 0xd8207084,
+	0x17c07c1f, 0x1a10001f, 0x10006918, 0x8103a001, 0xb107a081, 0xb1003081,
+	0xd8207084, 0x17c07c1f, 0x1a40001f, 0x100062ac, 0x1291841f, 0xc2400360,
+	0x17c07c1f, 0x89400005, 0xffffff7f, 0xe8208000, 0x10006f1c, 0x00000000,
+	0xe8208000, 0x10006b4c, 0x00000000, 0xe8208000, 0x100063e0, 0x00000080,
+	0xc2800940, 0x1293841f, 0xd0004260, 0x17c07c1f, 0xc2800940, 0x1294041f,
+	0xe8208000, 0x10006600, 0x00000000, 0x1ac0001f, 0x55aa55aa, 0x1940001f,
+	0xaa55aa55, 0xc2800940, 0x1294841f, 0x1b80001f, 0x00001000, 0xf0000000,
+	0x17c07c1f
+};
+
+static const struct pcm_desc mcdi_pcm = {
+	.version = "pcm_mcdi_v0.5_20140721_mt8173_v03.04_20150507",
+	.base = mcdi_binary,
+	.size = 919,
+	.sess = 2,
+	.replace = 0,
+};
+
+static struct pwr_ctrl mcdi_ctrl = {
+	.wake_src = WAKE_SRC_FOR_MCDI,
+	.wake_src_md32 = 0,
+	.wfi_op = WFI_OP_OR,
+	.mcusys_idle_mask = 1,
+	.ca7top_idle_mask = 1,
+	.ca15top_idle_mask = 1,
+	.disp_req_mask = 1,
+	.mfg_req_mask = 1,
+	.md32_req_mask = 1,
+};
+
+static const struct spm_lp_scen spm_mcdi = {
+	.pcmdesc = &mcdi_pcm,
+	.pwrctrl = &mcdi_ctrl,
+};
+
+void spm_mcdi_cpu_wake_up_event(int wake_up_event, int disable_dormant_power)
+{
+	if (((mmio_read_32(SPM_SLEEP_CPU_WAKEUP_EVENT) & 0x1) == 1)
+	    && ((mmio_read_32(SPM_CLK_CON) & CC_DISABLE_DORM_PWR) == 0)) {
+		/* MCDI is offload? */
+		INFO("%s: SPM_SLEEP_CPU_WAKEUP_EVENT:%x, SPM_CLK_CON %x",
+		     __func__, mmio_read_32(SPM_SLEEP_CPU_WAKEUP_EVENT),
+		     mmio_read_32(SPM_CLK_CON));
+		return;
+	}
+	/* Inform SPM that CPU wants to program CPU_WAKEUP_EVENT and
+	 * DISABLE_CPU_DROM */
+	mmio_write_32(SPM_PCM_REG_DATA_INI, PCM_MCDI_HANDSHAKE_SYNC);
+	mmio_write_32(SPM_PCM_PWR_IO_EN, PCM_RF_SYNC_R6);
+	mmio_write_32(SPM_PCM_PWR_IO_EN, 0);
+
+	/* Wait SPM's response, can't use sleep api */
+	while (mmio_read_32(SPM_PCM_REG6_DATA) != PCM_MCDI_HANDSHAKE_ACK)
+		;
+
+	if (disable_dormant_power) {
+		mmio_setbits_32(SPM_CLK_CON, CC_DISABLE_DORM_PWR);
+		while (mmio_read_32(SPM_CLK_CON) !=
+			(mmio_read_32(SPM_CLK_CON) | CC_DISABLE_DORM_PWR))
+			;
+
+	} else {
+		mmio_clrbits_32(SPM_CLK_CON, CC_DISABLE_DORM_PWR);
+		while (mmio_read_32(SPM_CLK_CON) !=
+			(mmio_read_32(SPM_CLK_CON) & ~CC_DISABLE_DORM_PWR))
+			;
+	}
+
+	mmio_write_32(SPM_SLEEP_CPU_WAKEUP_EVENT, wake_up_event);
+
+	while (mmio_read_32(SPM_SLEEP_CPU_WAKEUP_EVENT) != wake_up_event)
+		;
+
+	/* Inform SPM to see updated setting */
+	mmio_write_32(SPM_PCM_REG_DATA_INI, PCM_MCDI_UPDATE_INFORM);
+	mmio_write_32(SPM_PCM_PWR_IO_EN, PCM_RF_SYNC_R6);
+	mmio_write_32(SPM_PCM_PWR_IO_EN, 0);
+
+	while (mmio_read_32(SPM_PCM_REG6_DATA) != PCM_MCDI_CKECK_DONE)
+		;
+	/* END OF sequence */
+
+	mmio_write_32(SPM_PCM_REG_DATA_INI, 0x0);
+	mmio_write_32(SPM_PCM_PWR_IO_EN, PCM_RF_SYNC_R6);
+	mmio_write_32(SPM_PCM_PWR_IO_EN, 0);
+}
+
+void spm_mcdi_wakeup_all_cores(void)
+{
+	if (is_mcdi_ready() == 0)
+		return;
+
+	spm_mcdi_cpu_wake_up_event(1, 1);
+	while (mmio_read_32(SPM_PCM_REG5_DATA) != PCM_MCDI_ALL_CORE_AWAKE)
+		;
+	spm_mcdi_cpu_wake_up_event(1, 0);
+	while (mmio_read_32(SPM_PCM_REG5_DATA) != PCM_MCDI_OFFLOADED)
+		;
+
+	spm_clean_after_wakeup();
+	clear_all_ready();
+}
+
+void spm_mcdi_wfi_sel_enter(unsigned long mpidr)
+{
+	int core_id_val = mpidr & MPIDR_CPU_MASK;
+	int cluster_id = (mpidr & MPIDR_CLUSTER_MASK) >> MPIDR_AFFINITY_BITS;
+
+	/* SPM WFI Select by core number */
+	if (cluster_id) {
+		switch (core_id_val) {
+		case 0:
+			mmio_write_32(SPM_CA15_CPU0_IRQ_MASK, 1);
+			mmio_write_32(SPM_SLEEP_CA15_WFI0_EN, 1);
+			break;
+		case 1:
+			mmio_write_32(SPM_CA15_CPU1_IRQ_MASK, 1);
+			mmio_write_32(SPM_SLEEP_CA15_WFI1_EN, 1);
+			break;
+		case 2:
+			mmio_write_32(SPM_CA15_CPU2_IRQ_MASK, 1);
+			mmio_write_32(SPM_SLEEP_CA15_WFI2_EN, 1);
+			break;
+		case 3:
+			mmio_write_32(SPM_CA15_CPU3_IRQ_MASK, 1);
+			mmio_write_32(SPM_SLEEP_CA15_WFI3_EN, 1);
+			break;
+		default:
+			break;
+		}
+	} else {
+		switch (core_id_val) {
+		case 0:
+			mmio_write_32(SPM_CA7_CPU0_IRQ_MASK, 1);
+			mmio_write_32(SPM_SLEEP_CA7_WFI0_EN, 1);
+			break;
+		case 1:
+			mmio_write_32(SPM_CA7_CPU1_IRQ_MASK, 1);
+			mmio_write_32(SPM_SLEEP_CA7_WFI1_EN, 1);
+			break;
+		case 2:
+			mmio_write_32(SPM_CA7_CPU2_IRQ_MASK, 1);
+			mmio_write_32(SPM_SLEEP_CA7_WFI2_EN, 1);
+			break;
+		case 3:
+			mmio_write_32(SPM_CA7_CPU3_IRQ_MASK, 1);
+			mmio_write_32(SPM_SLEEP_CA7_WFI3_EN, 1);
+			break;
+		default:
+			break;
+		}
+	}
+}
+
+void spm_mcdi_wfi_sel_leave(unsigned long mpidr)
+{
+	int core_id_val = mpidr & MPIDR_CPU_MASK;
+	int cluster_id = (mpidr & MPIDR_CLUSTER_MASK) >> MPIDR_AFFINITY_BITS;
+
+	/* SPM WFI Select by core number */
+	if (cluster_id) {
+		switch (core_id_val) {
+		case 0:
+			mmio_write_32(SPM_SLEEP_CA15_WFI0_EN, 0);
+			mmio_write_32(SPM_CA15_CPU0_IRQ_MASK, 0);
+			break;
+		case 1:
+			mmio_write_32(SPM_SLEEP_CA15_WFI1_EN, 0);
+			mmio_write_32(SPM_CA15_CPU1_IRQ_MASK, 0);
+			break;
+		case 2:
+			mmio_write_32(SPM_SLEEP_CA15_WFI2_EN, 0);
+			mmio_write_32(SPM_CA15_CPU2_IRQ_MASK, 0);
+			break;
+		case 3:
+			mmio_write_32(SPM_SLEEP_CA15_WFI3_EN, 0);
+			mmio_write_32(SPM_CA15_CPU3_IRQ_MASK, 0);
+			break;
+		default:
+			break;
+		}
+	} else {
+		switch (core_id_val) {
+		case 0:
+			mmio_write_32(SPM_SLEEP_CA7_WFI0_EN, 0);
+			mmio_write_32(SPM_CA7_CPU0_IRQ_MASK, 0);
+			break;
+		case 1:
+			mmio_write_32(SPM_SLEEP_CA7_WFI1_EN, 0);
+			mmio_write_32(SPM_CA7_CPU1_IRQ_MASK, 0);
+			break;
+		case 2:
+			mmio_write_32(SPM_SLEEP_CA7_WFI2_EN, 0);
+			mmio_write_32(SPM_CA7_CPU2_IRQ_MASK, 0);
+			break;
+		case 3:
+			mmio_write_32(SPM_SLEEP_CA7_WFI3_EN, 0);
+			mmio_write_32(SPM_CA7_CPU3_IRQ_MASK, 0);
+			break;
+		default:
+			break;
+		}
+	}
+}
+
+void spm_mcdi_prepare(unsigned long mpidr)
+{
+	const struct pcm_desc *pcmdesc = spm_mcdi.pcmdesc;
+	struct pwr_ctrl *pwrctrl = spm_mcdi.pwrctrl;
+
+	spm_lock_get();
+	if (is_mcdi_ready() == 0) {
+		if (is_hotplug_ready() == 1)
+			spm_clear_hotplug();
+		set_pwrctrl_pcm_flags(pwrctrl, 0);
+		spm_reset_and_init_pcm();
+		spm_kick_im_to_fetch(pcmdesc);
+		spm_set_power_control(pwrctrl);
+		spm_set_wakeup_event(pwrctrl);
+		spm_kick_pcm_to_run(pwrctrl);
+		set_mcdi_ready();
+	}
+	spm_mcdi_wfi_sel_enter(mpidr);
+	spm_lock_release();
+}
+
+void spm_mcdi_finish(unsigned long mpidr)
+{
+	unsigned long linear_id = platform_get_core_pos(mpidr);
+
+	spm_lock_get();
+	spm_mcdi_wfi_sel_leave(mpidr);
+	mmio_write_32(SPM_PCM_SW_INT_CLEAR, (0x1 << linear_id));
+	spm_lock_release();
+}
diff --git a/plat/mediatek/mt8173/drivers/spm/spm_mcdi.h b/plat/mediatek/mt8173/drivers/spm/spm_mcdi.h
new file mode 100644
index 00000000..4df71d6a
--- /dev/null
+++ b/plat/mediatek/mt8173/drivers/spm/spm_mcdi.h
@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef __SPM_MCDI_H__
+#define __SPM_MCDI_H__
+
+void spm_mcdi_wakeup_all_cores(void);
+void spm_mcdi_wfi_sel_enter(unsigned long mpidr);
+void spm_mcdi_wfi_sel_leave(unsigned long mpidr);
+void spm_mcdi_prepare(unsigned long mpidr);
+void spm_mcdi_finish(unsigned long mpidr);
+
+#endif /* __SPM_MCDI_H__ */
diff --git a/plat/mediatek/mt8173/drivers/spm/spm_suspend.c b/plat/mediatek/mt8173/drivers/spm/spm_suspend.c
new file mode 100644
index 00000000..06d1c75c
--- /dev/null
+++ b/plat/mediatek/mt8173/drivers/spm/spm_suspend.c
@@ -0,0 +1,307 @@
+/*
+ * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <bakery_lock.h>
+#include <debug.h>
+#include <spm.h>
+#include <spm_suspend.h>
+
+/*
+ * System Power Manager (SPM) is a hardware module, which controls cpu or
+ * system power for different power scenarios using different firmware.
+ * This driver controls the system power in system suspend flow.
+ */
+
+#define WAIT_UART_ACK_TIMES     80	/* 80 * 10us */
+
+#define WAKE_SRC_FOR_SUSPEND					\
+	(WAKE_SRC_KP | WAKE_SRC_EINT | WAKE_SRC_MD32 |		\
+	WAKE_SRC_USB_CD | WAKE_SRC_USB_PDN | WAKE_SRC_THERM |	\
+	WAKE_SRC_SYSPWREQ | WAKE_SRC_SEJ | WAKE_SRC_ALL_MD32)
+
+#define WAKE_SRC_FOR_MD32  0
+
+#define spm_is_wakesrc_invalid(wakesrc)	\
+	(!!((unsigned int)(wakesrc) & 0xc0003803))
+
+const unsigned int spm_flags =
+	SPM_DUALVCORE_PDN_DIS | SPM_PASR_DIS | SPM_DPD_DIS |
+	SPM_CPU_DVS_DIS | SPM_OPT | SPM_INFRA_PDN_DIS;
+
+enum wake_reason_t spm_wake_reason = WR_NONE;
+
+/**********************************************************
+ * PCM sequence for cpu suspend
+ **********************************************************/
+static const unsigned int suspend_binary_ca7[] = {
+	0x81f58407, 0x81f68407, 0x803a0400, 0x803a8400, 0x1b80001f, 0x20000000,
+	0x80300400, 0x80318400, 0x80328400, 0xa1d28407, 0x81f20407, 0x81409801,
+	0xd8000245, 0x17c07c1f, 0x18c0001f, 0x10006234, 0xc0c031a0, 0x1200041f,
+	0x80310400, 0x1b80001f, 0x2000000a, 0xa0110400, 0x18c0001f, 0x100062c8,
+	0xe0e00010, 0xe0e00030, 0xe0e00070, 0xe0e000f0, 0x1b80001f, 0x2000001a,
+	0xe0e00ff0, 0xe8208000, 0x10006354, 0xfffe7fff, 0xe8208000, 0x10006834,
+	0x00000010, 0x81f00407, 0xa1dd0407, 0x81fd0407, 0xc2803780, 0x1290041f,
+	0x8880000c, 0x2f7be75f, 0xd8200642, 0x17c07c1f, 0x1b00001f, 0x7fffe7ff,
+	0xd0000680, 0x17c07c1f, 0x1b00001f, 0x7ffff7ff, 0xf0000000, 0x17c07c1f,
+	0x80880001, 0xd8000762, 0x17c07c1f, 0xd00027a0, 0x1200041f, 0xe8208000,
+	0x10006834, 0x00000000, 0x1b00001f, 0x3fffe7ff, 0x1b80001f, 0x20000004,
+	0xd820092c, 0x17c07c1f, 0xe8208000, 0x10006834, 0x00000010, 0xd00011a0,
+	0x17c07c1f, 0x18c0001f, 0x10006608, 0x1910001f, 0x10006608, 0x813b0404,
+	0xe0c00004, 0x1880001f, 0x10006320, 0xc0c03680, 0xe080000f, 0xd8200b23,
+	0x17c07c1f, 0x1b00001f, 0x7ffff7ff, 0xd00011a0, 0x17c07c1f, 0xe080001f,
+	0xe8208000, 0x10006354, 0xffffffff, 0x18c0001f, 0x100062c8, 0xe0e000f0,
+	0xe0e00030, 0xe0e00000, 0x81409801, 0xd8000fe5, 0x17c07c1f, 0x18c0001f,
+	0x10004094, 0x1910001f, 0x1020e374, 0xe0c00004, 0x18c0001f, 0x10004098,
+	0x1910001f, 0x1020e378, 0xe0c00004, 0x18c0001f, 0x10011094, 0x1910001f,
+	0x10213374, 0xe0c00004, 0x18c0001f, 0x10011098, 0x1910001f, 0x10213378,
+	0xe0c00004, 0x1910001f, 0x10213378, 0x18c0001f, 0x10006234, 0xc0c03360,
+	0x17c07c1f, 0xc2803780, 0x1290841f, 0xa1d20407, 0x81f28407, 0xa1d68407,
+	0xa0128400, 0xa0118400, 0xa0100400, 0xa01a8400, 0xa01a0400, 0x19c0001f,
+	0x001c239f, 0x1b00001f, 0x3fffefff, 0xf0000000, 0x17c07c1f, 0x808d8001,
+	0xd8201422, 0x17c07c1f, 0x803d8400, 0x1b80001f, 0x2000001a, 0x80340400,
+	0x17c07c1f, 0x17c07c1f, 0x80310400, 0x81fa0407, 0x81f18407, 0x81f08407,
+	0xa1dc0407, 0x1b80001f, 0x200000b6, 0xd00020e0, 0x17c07c1f, 0x1880001f,
+	0x20000208, 0x81411801, 0xd8001605, 0x17c07c1f, 0xe8208000, 0x1000f600,
+	0xd2000000, 0x1380081f, 0x18c0001f, 0x10006240, 0xe0e00016, 0xe0e0001e,
+	0xe0e0000e, 0xe0e0000f, 0x80368400, 0x1380081f, 0x80370400, 0x1380081f,
+	0x80360400, 0x803e0400, 0x1380081f, 0x80380400, 0x803b0400, 0xa01d8400,
+	0x1b80001f, 0x20000034, 0x803d8400, 0x1b80001f, 0x20000152, 0x803d0400,
+	0x1380081f, 0x18c0001f, 0x1000f5c8, 0x1910001f, 0x1000f5c8, 0xa1000404,
+	0xe0c00004, 0x18c0001f, 0x100125c8, 0x1910001f, 0x100125c8, 0xa1000404,
+	0xe0c00004, 0x1910001f, 0x100125c8, 0x80340400, 0x17c07c1f, 0x17c07c1f,
+	0x80310400, 0xe8208000, 0x10000044, 0x00000100, 0x1b80001f, 0x20000068,
+	0x1b80001f, 0x2000000a, 0x18c0001f, 0x10006240, 0xe0e0000d, 0xd8001e65,
+	0x17c07c1f, 0x18c0001f, 0x100040f4, 0x1910001f, 0x100040f4, 0xa11c8404,
+	0xe0c00004, 0x1b80001f, 0x2000000a, 0x813c8404, 0xe0c00004, 0x18c0001f,
+	0x100110f4, 0x1910001f, 0x100110f4, 0xa11c8404, 0xe0c00004, 0x1b80001f,
+	0x2000000a, 0x813c8404, 0xe0c00004, 0x1b80001f, 0x20000100, 0x81fa0407,
+	0x81f18407, 0x81f08407, 0xe8208000, 0x10006354, 0xfffe7b47, 0x18c0001f,
+	0x65930003, 0xc0c03080, 0x17c07c1f, 0xa1d80407, 0xa1dc0407, 0x18c0001f,
+	0x10006608, 0x1910001f, 0x10006608, 0xa11b0404, 0xe0c00004, 0xc2803780,
+	0x1291041f, 0x8880000c, 0x2f7be75f, 0xd8202222, 0x17c07c1f, 0x1b00001f,
+	0x3fffe7ff, 0xd0002260, 0x17c07c1f, 0x1b00001f, 0xbfffe7ff, 0xf0000000,
+	0x17c07c1f, 0x1890001f, 0x10006608, 0x808b0801, 0xd8202502, 0x17c07c1f,
+	0x1880001f, 0x10006320, 0xc0c03400, 0xe080000f, 0xd8002663, 0x17c07c1f,
+	0xe080001f, 0xa1da0407, 0x81fc0407, 0xa0110400, 0xa0140400, 0xa01d8400,
+	0xd0002fc0, 0x17c07c1f, 0x1b80001f, 0x20000fdf, 0x1890001f, 0x10006608,
+	0x80c98801, 0x810a8801, 0x10918c1f, 0xa0939002, 0x8080080d, 0xd82027a2,
+	0x12007c1f, 0x1b00001f, 0x3fffe7ff, 0x1b80001f, 0x20000004, 0xd800304c,
+	0x17c07c1f, 0x1b00001f, 0xbfffe7ff, 0xd0003040, 0x17c07c1f, 0x81f80407,
+	0x81fc0407, 0x18c0001f, 0x65930006, 0xc0c03080, 0x17c07c1f, 0x18c0001f,
+	0x65930007, 0xc0c03080, 0x17c07c1f, 0x1880001f, 0x10006320, 0xc0c03400,
+	0xe080000f, 0xd8002663, 0x17c07c1f, 0xe080001f, 0x18c0001f, 0x65930005,
+	0xc0c03080, 0x17c07c1f, 0xa1da0407, 0xe8208000, 0x10000048, 0x00000100,
+	0x1b80001f, 0x20000068, 0xa0110400, 0xa0140400, 0x18c0001f, 0x1000f5c8,
+	0x1910001f, 0x1000f5c8, 0x81200404, 0xe0c00004, 0x18c0001f, 0x100125c8,
+	0x1910001f, 0x100125c8, 0x81200404, 0xe0c00004, 0x1910001f, 0x100125c8,
+	0xa01d0400, 0xa01b0400, 0xa0180400, 0x803d8400, 0xa01e0400, 0xa0160400,
+	0xa0170400, 0xa0168400, 0x1b80001f, 0x20000104, 0x81411801, 0xd8002f85,
+	0x17c07c1f, 0x18c0001f, 0x10006240, 0xc0c03360, 0x17c07c1f, 0xe8208000,
+	0x1000f600, 0xd2000001, 0xd8000768, 0x17c07c1f, 0xc2803780, 0x1291841f,
+	0x1b00001f, 0x7ffff7ff, 0xf0000000, 0x17c07c1f, 0x1900001f, 0x10006830,
+	0xe1000003, 0x18c0001f, 0x10006834, 0xe0e00000, 0xe0e00001, 0xf0000000,
+	0x17c07c1f, 0xe0f07f16, 0x1380201f, 0xe0f07f1e, 0x1380201f, 0xe0f07f0e,
+	0x1b80001f, 0x20000104, 0xe0f07f0c, 0xe0f07f0d, 0xe0f07e0d, 0xe0f07c0d,
+	0xe0f0780d, 0xf0000000, 0xe0f0700d, 0xe0f07f0d, 0xe0f07f0f, 0xe0f07f1e,
+	0xf0000000, 0xe0f07f12, 0x11407c1f, 0x81f08407, 0x81f18407, 0x1b80001f,
+	0x20000001, 0xa1d08407, 0xa1d18407, 0x1392841f, 0x812ab401, 0x80ebb401,
+	0xa0c00c04, 0xd8203603, 0x17c07c1f, 0x80c01403, 0xd8203423, 0x01400405,
+	0x1900001f, 0x10006814, 0xf0000000, 0xe1000003, 0xa1d00407, 0x1b80001f,
+	0x20000208, 0x80ea3401, 0x1a00001f, 0x10006814, 0xf0000000, 0xe2000003,
+	0x18c0001f, 0x10006b6c, 0x1910001f, 0x10006b6c, 0xa1002804, 0xf0000000,
+	0xe0c00004, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f, 0x17c07c1f,
+	0x17c07c1f, 0x17c07c1f, 0x1840001f, 0x00000001, 0xa1d48407, 0x1990001f,
+	0x10006b08, 0x1a50001f, 0x10006610, 0x8246a401, 0xe8208000, 0x10006b6c,
+	0x00000000, 0x1b00001f, 0x2f7be75f, 0x81469801, 0xd8004305, 0x17c07c1f,
+	0x1b80001f, 0xd00f0000, 0x8880000c, 0x2f7be75f, 0xd8005d62, 0x17c07c1f,
+	0xd0004340, 0x17c07c1f, 0x1b80001f, 0x500f0000, 0xe8208000, 0x10006354,
+	0xfffe7b47, 0xc0c06900, 0x81401801, 0xd80048a5, 0x17c07c1f, 0x81f60407,
+	0x18c0001f, 0x10006200, 0xc0c05e20, 0x12807c1f, 0xe8208000, 0x1000625c,
+	0x00000001, 0x1b80001f, 0x20000080, 0xc0c05e20, 0x1280041f, 0x18c0001f,
+	0x10006204, 0xc0c061c0, 0x1280041f, 0x18c0001f, 0x10006208, 0xc0c05e20,
+	0x12807c1f, 0xe8208000, 0x10006244, 0x00000001, 0x1b80001f, 0x20000080,
+	0xc0c05e20, 0x1280041f, 0x18c0001f, 0x10006290, 0xc0c05e20, 0x1280041f,
+	0xe8208000, 0x10006404, 0x00003101, 0xc2803780, 0x1292041f, 0x81469801,
+	0xd8204a05, 0x17c07c1f, 0x1b00001f, 0x2f7be75f, 0x1b80001f, 0x30000004,
+	0x8880000c, 0x2f7be75f, 0xd80057c2, 0x17c07c1f, 0xc0c06480, 0x17c07c1f,
+	0x18c0001f, 0x10006294, 0xe0f07fff, 0xe0e00fff, 0xe0e000ff, 0x81449801,
+	0xd8004c45, 0x17c07c1f, 0x1a00001f, 0x10006604, 0xe2200003, 0xc0c06540,
+	0x17c07c1f, 0xe2200005, 0xc0c06540, 0x17c07c1f, 0xa1d38407, 0xa1d98407,
+	0x1800001f, 0x00000012, 0x1800001f, 0x00000e12, 0x1800001f, 0x03800e12,
+	0x1800001f, 0x038e0e12, 0xe8208000, 0x10006310, 0x0b1600f8, 0x1b00001f,
+	0xbfffe7ff, 0x1b80001f, 0x90100000, 0x80c00400, 0xd8204f63, 0xa1d58407,
+	0xa1dd8407, 0x1b00001f, 0x3fffefff, 0xd0004e20, 0x17c07c1f, 0x1890001f,
+	0x100063e8, 0x88c0000c, 0x2f7be75f, 0xd8005183, 0x17c07c1f, 0x80c40001,
+	0xd8005103, 0x17c07c1f, 0x1b00001f, 0xbfffe7ff, 0xd0005140, 0x17c07c1f,
+	0x1b00001f, 0x7ffff7ff, 0xd0004e20, 0x17c07c1f, 0x80c40001, 0xd8205283,
+	0x17c07c1f, 0xa1de0407, 0x1b00001f, 0x7fffe7ff, 0xd0004e20, 0x17c07c1f,
+	0x18c0001f, 0x10006294, 0xe0e001fe, 0xe0e003fc, 0xe0e007f8, 0xe0e00ff0,
+	0x1b80001f, 0x20000020, 0xe0f07ff0, 0xe0f07f00, 0x81449801, 0xd8005565,
+	0x17c07c1f, 0x1a00001f, 0x10006604, 0xe2200002, 0xc0c06540, 0x17c07c1f,
+	0xe2200004, 0xc0c06540, 0x17c07c1f, 0x1b80001f, 0x200016a8, 0x1800001f,
+	0x03800e12, 0x1b80001f, 0x20000300, 0x1800001f, 0x00000e12, 0x1b80001f,
+	0x20000300, 0x1800001f, 0x00000012, 0x1b80001f, 0x20000104, 0x10007c1f,
+	0x81f38407, 0x81f98407, 0x81f90407, 0x81f40407, 0x1b80001f, 0x200016a8,
+	0x81401801, 0xd8005d65, 0x17c07c1f, 0xe8208000, 0x10006404, 0x00002101,
+	0x18c0001f, 0x10006290, 0x1212841f, 0xc0c05fa0, 0x12807c1f, 0xc0c05fa0,
+	0x1280041f, 0x18c0001f, 0x10006208, 0x1212841f, 0xc0c05fa0, 0x12807c1f,
+	0xe8208000, 0x10006244, 0x00000000, 0x1b80001f, 0x20000080, 0xc0c05fa0,
+	0x1280041f, 0xe8208000, 0x10200268, 0x000ffffe, 0x18c0001f, 0x10006204,
+	0x1212841f, 0xc0c06300, 0x1280041f, 0x18c0001f, 0x10006200, 0x1212841f,
+	0xc0c05fa0, 0x12807c1f, 0xe8208000, 0x1000625c, 0x00000000, 0x1b80001f,
+	0x20000080, 0xc0c05fa0, 0x1280041f, 0x19c0001f, 0x01411820, 0x1ac0001f,
+	0x55aa55aa, 0x10007c1f, 0xf0000000, 0xd8005eca, 0x17c07c1f, 0xe2e0004f,
+	0xe2e0006f, 0xe2e0002f, 0xd8205f6a, 0x17c07c1f, 0xe2e0002e, 0xe2e0003e,
+	0xe2e00032, 0xf0000000, 0x17c07c1f, 0xd800606a, 0x17c07c1f, 0xe2e00036,
+	0xe2e0003e, 0x1380201f, 0xe2e0003c, 0xd820618a, 0x17c07c1f, 0x1380201f,
+	0xe2e0007c, 0x1b80001f, 0x20000003, 0xe2e0005c, 0xe2e0004c, 0xe2e0004d,
+	0xf0000000, 0x17c07c1f, 0xd82062c9, 0x17c07c1f, 0xe2e0000d, 0xe2e0000c,
+	0xe2e0001c, 0xe2e0001e, 0xe2e00016, 0xe2e00012, 0xf0000000, 0x17c07c1f,
+	0xd8206449, 0x17c07c1f, 0xe2e00016, 0x1380201f, 0xe2e0001e, 0x1380201f,
+	0xe2e0001c, 0x1380201f, 0xe2e0000c, 0xe2e0000d, 0xf0000000, 0x17c07c1f,
+	0xa1d40407, 0x1391841f, 0xa1d90407, 0x1393041f, 0xf0000000, 0x17c07c1f,
+	0x18d0001f, 0x10006604, 0x10cf8c1f, 0xd8206543, 0x17c07c1f, 0xf0000000,
+	0x17c07c1f, 0xe8208000, 0x11008014, 0x00000002, 0xe8208000, 0x11008020,
+	0x00000101, 0xe8208000, 0x11008004, 0x000000d0, 0x1a00001f, 0x11008000,
+	0xd800680a, 0xe220005d, 0xd820682a, 0xe2200000, 0xe2200001, 0xe8208000,
+	0x11008024, 0x00000001, 0x1b80001f, 0x20000424, 0xf0000000, 0x17c07c1f,
+	0xa1d10407, 0x1b80001f, 0x20000020, 0xf0000000, 0x17c07c1f
+};
+
+/*
+ * PCM binary for suspend scenario
+ */
+static const struct pcm_desc suspend_pcm_ca7 = {
+	.version = "pcm_suspend_v32.18_20140721_mt8173_v00.03_MD32_EMPTY_CA7",
+	.base = suspend_binary_ca7,
+	.size = 845,
+	.sess = 2,
+	.replace = 0,
+	.vec0 = EVENT_VEC(11, 1, 0, 0),
+	.vec1 = EVENT_VEC(12, 1, 0, 54),
+	.vec2 = EVENT_VEC(30, 1, 0, 143),
+	.vec3 = EVENT_VEC(31, 1, 0, 277),
+};
+
+/*
+ * SPM settings for suspend scenario
+ */
+static struct pwr_ctrl spm_ctrl = {
+	.wake_src = WAKE_SRC_FOR_SUSPEND,
+	.wake_src_md32 = WAKE_SRC_FOR_MD32,
+	.r0_ctrl_en = 1,
+	.r7_ctrl_en = 1,
+	.infra_dcm_lock = 1,
+	.wfi_op = WFI_OP_AND,
+	.pcm_apsrc_req = 0,
+	.ca7top_idle_mask = 0,
+	.ca15top_idle_mask = 0,
+	.mcusys_idle_mask = 0,
+	.disp_req_mask = 0,
+	.mfg_req_mask = 0,
+	.md32_req_mask = 1,
+	.srclkenai_mask = 1,
+	.ca7_wfi0_en = 1,
+	.ca7_wfi1_en = 1,
+	.ca7_wfi2_en = 1,
+	.ca7_wfi3_en = 1,
+	.ca15_wfi0_en = 1,
+	.ca15_wfi1_en = 1,
+	.ca15_wfi2_en = 1,
+	.ca15_wfi3_en = 1,
+};
+
+/*
+ * go_to_sleep_before_wfi() - trigger SPM to enter suspend scenario
+ */
+static void go_to_sleep_before_wfi(const unsigned int spm_flags)
+{
+	struct pwr_ctrl *pwrctrl;
+
+	pwrctrl = &spm_ctrl;
+
+	set_pwrctrl_pcm_flags(pwrctrl, spm_flags);
+
+	spm_set_sysclk_settle();
+
+	INFO("sec = %u, wakesrc = 0x%x (%u)(%u)\n",
+	     pwrctrl->timer_val, pwrctrl->wake_src,
+	     is_cpu_pdn(pwrctrl->pcm_flags),
+	     is_infra_pdn(pwrctrl->pcm_flags));
+
+	spm_reset_and_init_pcm();
+	spm_init_pcm_register();
+	spm_set_power_control(pwrctrl);
+	spm_set_wakeup_event(pwrctrl);
+	spm_kick_pcm_to_run(pwrctrl);
+	spm_init_event_vector(&suspend_pcm_ca7);
+	spm_kick_im_to_fetch(&suspend_pcm_ca7);
+}
+
+/*
+ * go_to_sleep_after_wfi() - get wakeup reason after
+ * leaving suspend scenario and clean up SPM settings
+ */
+static enum wake_reason_t go_to_sleep_after_wfi(void)
+{
+	struct wake_status wakesta;
+	static enum wake_reason_t last_wr = WR_NONE;
+
+	spm_get_wakeup_status(&wakesta);
+	spm_clean_after_wakeup();
+	last_wr = spm_output_wake_reason(&wakesta);
+
+	return last_wr;
+}
+
+void spm_system_suspend(void)
+{
+	spm_lock_get();
+	go_to_sleep_before_wfi(spm_flags);
+	set_suspend_ready();
+	spm_lock_release();
+}
+
+void spm_system_suspend_finish(void)
+{
+	spm_lock_get();
+	spm_wake_reason = go_to_sleep_after_wfi();
+	INFO("spm_wake_reason=%d\n", spm_wake_reason);
+	clear_all_ready();
+	spm_lock_release();
+}
diff --git a/plat/mediatek/mt8173/drivers/spm/spm_suspend.h b/plat/mediatek/mt8173/drivers/spm/spm_suspend.h
new file mode 100644
index 00000000..643713bb
--- /dev/null
+++ b/plat/mediatek/mt8173/drivers/spm/spm_suspend.h
@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef __SPM_SUSPEND_H__
+#define __SPM_SUSPEND_H__
+
+/* cpu dormant return code */
+#define CPU_DORMANT_RESET        0
+#define CPU_DORMANT_ABORT        1
+
+void spm_system_suspend(void);
+void spm_system_suspend_finish(void);
+
+#endif /* __SPM_SUSPEND_H__*/
diff --git a/plat/mediatek/mt8173/drivers/timer/mt_cpuxgpt.c b/plat/mediatek/mt8173/drivers/timer/mt_cpuxgpt.c
new file mode 100644
index 00000000..63200bde
--- /dev/null
+++ b/plat/mediatek/mt8173/drivers/timer/mt_cpuxgpt.c
@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <arch_helpers.h>
+#include <mcucfg.h>
+#include <mmio.h>
+#include <mt8173_def.h>
+#include <mt_cpuxgpt.h>
+
+static void write_cpuxgpt(unsigned int reg_index, unsigned int value)
+{
+	mmio_write_32((uintptr_t)&mt8173_mcucfg->xgpt_idx, reg_index);
+	mmio_write_32((uintptr_t)&mt8173_mcucfg->xgpt_ctl, value);
+}
+
+static void cpuxgpt_set_init_cnt(unsigned int countH, unsigned int countL)
+{
+	write_cpuxgpt(INDEX_CNT_H_INIT, countH);
+	/* update count when countL programmed */
+	write_cpuxgpt(INDEX_CNT_L_INIT, countL);
+}
+
+void generic_timer_backup(void)
+{
+	uint64_t cval;
+
+	cval = read_cntpct_el0();
+	cpuxgpt_set_init_cnt((uint32_t)(cval >> 32),
+			       (uint32_t)(cval & 0xffffffff));
+}
diff --git a/plat/mediatek/mt8173/drivers/timer/mt_cpuxgpt.h b/plat/mediatek/mt8173/drivers/timer/mt_cpuxgpt.h
new file mode 100644
index 00000000..329a2500
--- /dev/null
+++ b/plat/mediatek/mt8173/drivers/timer/mt_cpuxgpt.h
@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __MT_CPUXGPT_H__
+#define __MT_CPUXGPT_H__
+
+/* REG */
+#define INDEX_CNT_L_INIT    0x008
+#define INDEX_CNT_H_INIT    0x00C
+
+void generic_timer_backup(void);
+
+#endif /* __MT_CPUXGPT_H__ */
diff --git a/plat/mediatek/mt8173/drivers/uart/8250_console.S b/plat/mediatek/mt8173/drivers/uart/8250_console.S
new file mode 100644
index 00000000..5b0ae6df
--- /dev/null
+++ b/plat/mediatek/mt8173/drivers/uart/8250_console.S
@@ -0,0 +1,172 @@
+/*
+ * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <asm_macros.S>
+#include <uart8250.h>
+
+	.globl	console_core_init
+	.globl	console_core_putc
+	.globl	console_core_getc
+
+	/* -----------------------------------------------
+	 * int console_core_init(unsigned long base_addr,
+	 * unsigned int uart_clk, unsigned int baud_rate)
+	 * Function to initialize the console without a
+	 * C Runtime to print debug information. This
+	 * function will be accessed by console_init and
+	 * crash reporting.
+	 * In: x0 - console base address
+	 *     w1 - Uart clock in Hz
+	 *     w2 - Baud rate
+	 * Out: return 1 on success else 0 on error
+	 * Clobber list : x1, x2, x3
+	 * -----------------------------------------------
+	 */
+func console_core_init
+	/* Check the input base address */
+	cbz	x0, core_init_fail
+	/* Check baud rate and uart clock for sanity */
+	cbz	w1, core_init_fail
+	cbz	w2, core_init_fail
+
+	/* Disable interrupt */
+	str	wzr, [x0, #UART_IER]
+
+	/* Force DTR and RTS to high */
+	mov	w3, #(UART_MCR_DTR | UART_MCR_RTS)
+	str	w3, [x0, #UART_MCR]
+
+	/* Check high speed */
+	movz	w3, #:abs_g1:115200
+	movk	w3, #:abs_g0_nc:115200
+	cmp	w2, w3
+	b.hi	1f
+
+	/* Non high speed */
+	lsl	w2, w2, #4
+	mov	w3, wzr
+	b	2f
+
+	/* High speed */
+1:	lsl	w2, w2, #2
+	mov	w3, #2
+
+	/* Set high speed UART register */
+2:	str	w3, [x0, #UART_HIGHSPEED]
+
+	/* Calculate divisor */
+	udiv	w3, w1, w2	/* divisor = uartclk / (quot * baudrate) */
+	msub	w1, w3, w2, w1	/* remainder = uartclk % (quot * baudrate) */
+	lsr	w2, w2, #1
+	cmp	w1, w2
+	cinc	w3, w3, hs
+
+	/* Set line configuration, access divisor latches */
+	mov	w1, #(UART_LCR_DLAB | UART_LCR_WLS_8)
+	str	w1, [x0, #UART_LCR]
+
+	/* Set the divisor */
+	and	w1, w3, #0xff
+	str	w1, [x0, #UART_DLL]
+	lsr	w1, w3, #8
+	and	w1, w1, #0xff
+	str	w1, [x0, #UART_DLH]
+
+	/* Hide the divisor latches */
+	mov	w1, #UART_LCR_WLS_8
+	str	w1, [x0, #UART_LCR]
+
+	/* Enable FIFOs, and clear receive and transmit */
+	mov	w1, #(UART_FCR_FIFO_EN | UART_FCR_CLEAR_RCVR |	\
+			UART_FCR_CLEAR_XMIT)
+	str	w1, [x0, #UART_FCR]
+
+	mov	w0, #1
+	ret
+core_init_fail:
+	mov	w0, wzr
+	ret
+endfunc console_core_init
+
+	/* --------------------------------------------------------
+	 * int console_core_putc(int c, unsigned long base_addr)
+	 * Function to output a character over the console. It
+	 * returns the character printed on success or -1 on error.
+	 * In : w0 - character to be printed
+	 *      x1 - console base address
+	 * Out : return -1 on error else return character.
+	 * Clobber list : x2
+	 * --------------------------------------------------------
+	 */
+func console_core_putc
+	/* Check the input parameter */
+	cbz	x1, putc_error
+	/* Prepend '\r' to '\n' */
+	cmp	w0, #0xA
+	b.ne	2f
+
+	/* Check if the transmit FIFO is full */
+1:	ldr	w2, [x1, #UART_LSR]
+	and	w2, w2, #UART_LSR_THRE
+	cbz	w2, 1b
+	mov	w2, #0xD
+	str	w2, [x1, #UART_THR]
+
+	/* Check if the transmit FIFO is full */
+2:	ldr	w2, [x1, #UART_LSR]
+	and	w2, w2, #UART_LSR_THRE
+	cbz	w2, 2b
+	str	w0, [x1, #UART_THR]
+	ret
+putc_error:
+	mov	w0, #-1
+	ret
+endfunc console_core_putc
+
+	/* ---------------------------------------------
+	 * int console_core_getc(unsigned long base_addr)
+	 * Function to get a character from the console.
+	 * It returns the character grabbed on success
+	 * or -1 on error.
+	 * In : x0 - console base address
+	 * Clobber list : x0, x1
+	 * ---------------------------------------------
+	 */
+func console_core_getc
+	cbz	x0, getc_error
+
+	/* Check if the receive FIFO is empty */
+1:	ldr	w1, [x0, #UART_LSR]
+	tbz	w1, #UART_LSR_DR, 1b
+	ldr	w0, [x0, #UART_RBR]
+	ret
+getc_error:
+	mov	w0, #-1
+	ret
+endfunc console_core_getc
diff --git a/plat/mediatek/mt8173/drivers/uart/uart8250.h b/plat/mediatek/mt8173/drivers/uart/uart8250.h
new file mode 100644
index 00000000..b0f5b8d8
--- /dev/null
+++ b/plat/mediatek/mt8173/drivers/uart/uart8250.h
@@ -0,0 +1,62 @@
+/*
+ * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef __UART8250_H__
+#define __UART8250_H__
+
+/* UART register */
+#define UART_RBR		0x00	/* Receive buffer register */
+#define UART_DLL		0x00	/* Divisor latch lsb */
+#define UART_THR		0x00	/* Transmit holding register */
+#define UART_DLH		0x04	/* Divisor latch msb */
+#define UART_IER		0x04	/* Interrupt enable register */
+#define UART_FCR		0x08	/* FIFO control register */
+#define UART_LCR		0x0c	/* Line control register */
+#define UART_MCR		0x10	/* Modem control register */
+#define UART_LSR		0x14	/* Line status register */
+#define UART_HIGHSPEED		0x24	/* High speed UART */
+
+/* FCR */
+#define UART_FCR_FIFO_EN	0x01	/* enable FIFO */
+#define UART_FCR_CLEAR_RCVR	0x02	/* clear the RCVR FIFO */
+#define UART_FCR_CLEAR_XMIT	0x04	/* clear the XMIT FIFO */
+
+/* LCR */
+#define UART_LCR_WLS_8		0x03	/* 8 bit character length */
+#define UART_LCR_DLAB		0x80	/* divisor latch access bit */
+
+/* MCR */
+#define UART_MCR_DTR		0x01
+#define UART_MCR_RTS		0x02
+
+/* LSR */
+#define UART_LSR_DR		0x01	/* Data ready */
+#define UART_LSR_THRE		0x20	/* Xmit holding register empty */
+
+#endif	/* __UART8250_H__ */
diff --git a/plat/mediatek/mt8173/include/mcucfg.h b/plat/mediatek/mt8173/include/mcucfg.h
new file mode 100644
index 00000000..d2474ac6
--- /dev/null
+++ b/plat/mediatek/mt8173/include/mcucfg.h
@@ -0,0 +1,179 @@
+/*
+ * Copyright (c) 2014-2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef __MCUCFG_H__
+#define __MCUCFG_H__
+
+#include <mt8173_def.h>
+#include <stdint.h>
+
+struct mt8173_mcucfg_regs {
+	uint32_t mp0_ca7l_cache_config;
+	struct {
+		uint32_t mem_delsel0;
+		uint32_t mem_delsel1;
+	} mp0_cpu[4];
+	uint32_t mp0_cache_mem_delsel0;
+	uint32_t mp0_cache_mem_delsel1;
+	uint32_t mp0_axi_config;
+	uint32_t mp0_misc_config[2];
+	struct {
+		uint32_t rv_addr_lw;
+		uint32_t rv_addr_hw;
+	} mp0_rv_addr[4];
+	uint32_t mp0_ca7l_cfg_dis;
+	uint32_t mp0_ca7l_clken_ctrl;
+	uint32_t mp0_ca7l_rst_ctrl;
+	uint32_t mp0_ca7l_misc_config;
+	uint32_t mp0_ca7l_dbg_pwr_ctrl;
+	uint32_t mp0_rw_rsvd0;
+	uint32_t mp0_rw_rsvd1;
+	uint32_t mp0_ro_rsvd;
+	uint32_t reserved0_0[100];
+	uint32_t mp1_cpucfg;
+	uint32_t mp1_miscdbg;
+	uint32_t reserved0_1[13];
+	uint32_t mp1_rst_ctl;
+	uint32_t mp1_clkenm_div;
+	uint32_t reserved0_2[7];
+	uint32_t mp1_config_res;
+	uint32_t reserved0_3[13];
+	struct {
+		uint32_t rv_addr_lw;
+		uint32_t rv_addr_hw;
+	} mp1_rv_addr[2];
+	uint32_t reserved0_4[84];
+	uint32_t mp0_rst_status;		/* 0x400 */
+	uint32_t mp0_dbg_ctrl;
+	uint32_t mp0_dbg_flag;
+	uint32_t mp0_ca7l_ir_mon;
+	struct {
+		uint32_t pc_lw;
+		uint32_t pc_hw;
+		uint32_t fp_arch32;
+		uint32_t sp_arch32;
+		uint32_t fp_arch64_lw;
+		uint32_t fp_arch64_hw;
+		uint32_t sp_arch64_lw;
+		uint32_t sp_arch64_hw;
+	} mp0_dbg_core[4];
+	uint32_t dfd_ctrl;
+	uint32_t dfd_cnt_l;
+	uint32_t dfd_cnt_h;
+	uint32_t misccfg_mp0_rw_rsvd;
+	uint32_t misccfg_sec_vio_status0;
+	uint32_t misccfg_sec_vio_status1;
+	uint32_t reserved1[22];
+	uint32_t misccfg_rw_rsvd;		/* 0x500 */
+	uint32_t mcusys_dbg_mon_sel_a;
+	uint32_t mcusys_dbg_mon;
+	uint32_t reserved2[61];
+	uint32_t mcusys_config_a;		/* 0x600 */
+	uint32_t mcusys_config1_a;
+	uint32_t mcusys_gic_peribase_a;
+	uint32_t reserved3;
+	uint32_t sec_range0_start;		/* 0x610 */
+	uint32_t sec_range0_end;
+	uint32_t sec_range_enable;
+	uint32_t reserved4;
+	uint32_t int_pol_ctl[8];		/* 0x620 */
+	uint32_t aclken_div;			/* 0x640 */
+	uint32_t pclken_div;
+	uint32_t l2c_sram_ctrl;
+	uint32_t armpll_jit_ctrl;
+	uint32_t cci_addrmap;			/* 0x650 */
+	uint32_t cci_config;
+	uint32_t cci_periphbase;
+	uint32_t cci_nevntcntovfl;
+	uint32_t cci_clk_ctrl;			/* 0x660 */
+	uint32_t cci_acel_s1_ctrl;
+	uint32_t bus_fabric_dcm_ctrl;
+	uint32_t reserved5;
+	uint32_t xgpt_ctl;			/* 0x670 */
+	uint32_t xgpt_idx;
+	uint32_t ptpod2_ctl0;
+	uint32_t ptpod2_ctl1;
+	uint32_t mcusys_revid;
+	uint32_t mcusys_rw_rsvd0;
+	uint32_t mcusys_rw_rsvd1;
+};
+
+static struct mt8173_mcucfg_regs *const mt8173_mcucfg = (void *)MCUCFG_BASE;
+
+/* cpu boot mode */
+enum {
+	MP0_CPUCFG_64BIT_SHIFT = 12,
+	MP1_CPUCFG_64BIT_SHIFT = 28,
+	MP0_CPUCFG_64BIT = 0xf << MP0_CPUCFG_64BIT_SHIFT,
+	MP1_CPUCFG_64BIT = 0xf << MP1_CPUCFG_64BIT_SHIFT
+};
+
+/* scu related */
+enum {
+	MP0_ACINACTM_SHIFT = 4,
+	MP1_ACINACTM_SHIFT = 0,
+	MP0_ACINACTM = 1 << MP0_ACINACTM_SHIFT,
+	MP1_ACINACTM = 1 << MP1_ACINACTM_SHIFT
+};
+
+enum {
+	MP1_DIS_RGU0_WAIT_PD_CPUS_L1_ACK_SHIFT = 0,
+	MP1_DIS_RGU1_WAIT_PD_CPUS_L1_ACK_SHIFT = 4,
+	MP1_DIS_RGU2_WAIT_PD_CPUS_L1_ACK_SHIFT = 8,
+	MP1_DIS_RGU3_WAIT_PD_CPUS_L1_ACK_SHIFT = 12,
+	MP1_DIS_RGU_NOCPU_WAIT_PD_CPUS_L1_ACK_SHIFT = 16,
+
+	MP1_DIS_RGU0_WAIT_PD_CPUS_L1_ACK =
+		0xf << MP1_DIS_RGU0_WAIT_PD_CPUS_L1_ACK_SHIFT,
+	MP1_DIS_RGU1_WAIT_PD_CPUS_L1_ACK =
+		0xf << MP1_DIS_RGU1_WAIT_PD_CPUS_L1_ACK_SHIFT,
+	MP1_DIS_RGU2_WAIT_PD_CPUS_L1_ACK =
+		0xf << MP1_DIS_RGU2_WAIT_PD_CPUS_L1_ACK_SHIFT,
+	MP1_DIS_RGU3_WAIT_PD_CPUS_L1_ACK =
+		0xf << MP1_DIS_RGU3_WAIT_PD_CPUS_L1_ACK_SHIFT,
+	MP1_DIS_RGU_NOCPU_WAIT_PD_CPUS_L1_ACK =
+		0xf << MP1_DIS_RGU_NOCPU_WAIT_PD_CPUS_L1_ACK_SHIFT
+};
+
+enum {
+	MP1_AINACTS_SHIFT = 4,
+	MP1_AINACTS = 1 << MP1_AINACTS_SHIFT
+};
+
+enum {
+	MP1_SW_CG_GEN_SHIFT = 12,
+	MP1_SW_CG_GEN = 1 << MP1_SW_CG_GEN_SHIFT
+};
+
+enum {
+	MP1_L2RSTDISABLE_SHIFT = 14,
+	MP1_L2RSTDISABLE = 1 << MP1_L2RSTDISABLE_SHIFT
+};
+
+#endif  /* __MCUCFG_H__ */
diff --git a/plat/mediatek/mt8173/include/plat_macros.S b/plat/mediatek/mt8173/include/plat_macros.S
new file mode 100644
index 00000000..0e34b197
--- /dev/null
+++ b/plat/mediatek/mt8173/include/plat_macros.S
@@ -0,0 +1,110 @@
+/*
+ * Copyright (c) 2014-2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <cci.h>
+#include <gic_v2.h>
+#include <mt8173_def.h>
+
+.section .rodata.gic_reg_name, "aS"
+gicc_regs:
+	.asciz "gicc_hppir", "gicc_ahppir", "gicc_ctlr", ""
+gicd_pend_reg:
+	.asciz "gicd_ispendr regs (Offsets 0x200 - 0x278)\n"	\
+		" Offset:\t\t\tvalue\n"
+newline:
+	.asciz "\n"
+spacer:
+	.asciz ":\t\t0x"
+
+	/* ---------------------------------------------
+	 * The below macro prints out relevant GIC
+	 * registers whenever an unhandled exception is
+	 * taken in BL3-1.
+	 * Clobbers: x0 - x10, x16, x17, sp
+	 * ---------------------------------------------
+	 */
+	.macro plat_print_gic_regs
+	mov_imm x16, BASE_GICD_BASE
+	mov_imm x17, BASE_GICC_BASE
+	/* Load the gicc reg list to x6 */
+	adr	x6, gicc_regs
+	/* Load the gicc regs to gp regs used by str_in_crash_buf_print */
+	ldr	w8, [x17, #GICC_HPPIR]
+	ldr	w9, [x17, #GICC_AHPPIR]
+	ldr	w10, [x17, #GICC_CTLR]
+	/* Store to the crash buf and print to console */
+	bl	str_in_crash_buf_print
+
+	/* Print the GICD_ISPENDR regs */
+	add	x7, x16, #GICD_ISPENDR
+	adr	x4, gicd_pend_reg
+	bl	asm_print_str
+gicd_ispendr_loop:
+	sub	x4, x7, x16
+	cmp	x4, #0x280
+	b.eq	exit_print_gic_regs
+	bl	asm_print_hex
+
+	adr	x4, spacer
+	bl	asm_print_str
+
+	ldr	x4, [x7], #8
+	bl	asm_print_hex
+
+	adr	x4, newline
+	bl	asm_print_str
+	b	gicd_ispendr_loop
+exit_print_gic_regs:
+	.endm
+
+.section .rodata.cci_reg_name, "aS"
+cci_iface_regs:
+	.asciz "cci_snoop_ctrl_cluster0", "cci_snoop_ctrl_cluster1" , ""
+
+	/* ------------------------------------------------
+	 * The below macro prints out relevant interconnect
+	 * registers whenever an unhandled exception is
+	 * taken in BL3-1.
+	 * Clobbers: x0 - x9, sp
+	 * ------------------------------------------------
+	 */
+	.macro plat_print_interconnect_regs
+	adr	x6, cci_iface_regs
+	/* Store in x7 the base address of the first interface */
+	mov_imm	x7, (PLAT_MT_CCI_BASE + SLAVE_IFACE_OFFSET(	\
+			PLAT_MT_CCI_CLUSTER0_SL_IFACE_IX))
+	ldr	w8, [x7, #SNOOP_CTRL_REG]
+	/* Store in x7 the base address of the second interface */
+	mov_imm	x7, (PLAT_MT_CCI_BASE + SLAVE_IFACE_OFFSET(	\
+			PLAT_MT_CCI_CLUSTER1_SL_IFACE_IX))
+	ldr	w9, [x7, #SNOOP_CTRL_REG]
+	/* Store to the crash buf and print to console */
+	bl	str_in_crash_buf_print
+	.endm
diff --git a/plat/mediatek/mt8173/include/platform_def.h b/plat/mediatek/mt8173/include/platform_def.h
new file mode 100644
index 00000000..7759b3ee
--- /dev/null
+++ b/plat/mediatek/mt8173/include/platform_def.h
@@ -0,0 +1,119 @@
+/*
+ * Copyright (c) 2014-2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __PLATFORM_DEF_H__
+#define __PLATFORM_DEF_H__
+
+#define DEBUG_XLAT_TABLE 0
+
+/*******************************************************************************
+ * Platform binary types for linking
+ ******************************************************************************/
+#define PLATFORM_LINKER_FORMAT		"elf64-littleaarch64"
+#define PLATFORM_LINKER_ARCH		aarch64
+
+/*******************************************************************************
+ * Generic platform constants
+ ******************************************************************************/
+
+/* Size of cacheable stacks */
+#if DEBUG_XLAT_TABLE
+#define PLATFORM_STACK_SIZE 0x800
+#elif IMAGE_BL1
+#define PLATFORM_STACK_SIZE 0x440
+#elif IMAGE_BL2
+#define PLATFORM_STACK_SIZE 0x400
+#elif IMAGE_BL31
+#define PLATFORM_STACK_SIZE 0x800
+#elif IMAGE_BL32
+#define PLATFORM_STACK_SIZE 0x440
+#endif
+
+#define FIRMWARE_WELCOME_STR		"Booting Trusted Firmware\n"
+
+#define PLATFORM_MAX_AFFLVL		MPIDR_AFFLVL2
+#define PLATFORM_SYSTEM_COUNT		1
+#define PLATFORM_CLUSTER_COUNT		2
+#define PLATFORM_CLUSTER0_CORE_COUNT	4
+#define PLATFORM_CLUSTER1_CORE_COUNT	2
+#define PLATFORM_CORE_COUNT		(PLATFORM_CLUSTER1_CORE_COUNT +	\
+					 PLATFORM_CLUSTER0_CORE_COUNT)
+#define PLATFORM_MAX_CPUS_PER_CLUSTER	4
+#define PLATFORM_NUM_AFFS		(PLATFORM_SYSTEM_COUNT +	\
+					 PLATFORM_CLUSTER_COUNT +	\
+					 PLATFORM_CORE_COUNT)
+
+/*******************************************************************************
+ * Platform memory map related constants
+ ******************************************************************************/
+/* TF txet, ro, rw, internal SRAM, Size: release: 80KB, debug: 92KB */
+#define TZRAM_BASE		(0x100000)
+#if DEBUG
+#define TZRAM_SIZE		(0x20000)
+#else
+#define TZRAM_SIZE		(0x20000)
+#endif
+
+/* xlat_table , coherence ram, 64KB */
+#define TZRAM2_BASE		(TZRAM_BASE + TZRAM_SIZE)
+#define TZRAM2_SIZE		(0x10000)
+
+/*******************************************************************************
+ * BL31 specific defines.
+ ******************************************************************************/
+/*
+ * Put BL3-1 at the top of the Trusted SRAM (just below the shared memory, if
+ * present). BL31_BASE is calculated using the current BL3-1 debug size plus a
+ * little space for growth.
+ */
+#define BL31_BASE		(TZRAM_BASE + 0x1000)
+#define BL31_LIMIT		(TZRAM_BASE + TZRAM_SIZE)
+#define TZRAM2_LIMIT		(TZRAM2_BASE + TZRAM2_SIZE)
+
+/*******************************************************************************
+ * Platform specific page table and MMU setup constants
+ ******************************************************************************/
+#define ADDR_SPACE_SIZE		(1ull << 32)
+#define MAX_XLAT_TABLES		4
+#define MAX_MMAP_REGIONS	16
+
+/*******************************************************************************
+ * Declarations and constants to access the mailboxes safely. Each mailbox is
+ * aligned on the biggest cache line size in the platform. This is known only
+ * to the platform as it might have a combination of integrated and external
+ * caches. Such alignment ensures that two maiboxes do not sit on the same cache
+ * line at any cache level. They could belong to different cpus/clusters &
+ * get written while being protected by different locks causing corruption of
+ * a valid mailbox address.
+ ******************************************************************************/
+#define CACHE_WRITEBACK_SHIFT	6
+#define CACHE_WRITEBACK_GRANULE	(1 << CACHE_WRITEBACK_SHIFT)
+
+#endif /* __PLATFORM_DEF_H__ */
diff --git a/plat/mediatek/mt8173/include/power_tracer.h b/plat/mediatek/mt8173/include/power_tracer.h
new file mode 100644
index 00000000..9c35ce06
--- /dev/null
+++ b/plat/mediatek/mt8173/include/power_tracer.h
@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __POWER_TRACER_H__
+#define __POWER_TRACER_H__
+
+#define CPU_UP		0
+#define CPU_DOWN	1
+#define CPU_SUSPEND	2
+#define CLUSTER_UP	3
+#define CLUSTER_DOWN	4
+#define CLUSTER_SUSPEND	5
+
+void trace_power_flow(unsigned long mpidr, unsigned char mode);
+
+#endif
diff --git a/plat/mediatek/mt8173/include/scu.h b/plat/mediatek/mt8173/include/scu.h
new file mode 100644
index 00000000..71f3929b
--- /dev/null
+++ b/plat/mediatek/mt8173/include/scu.h
@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __SCU_H__
+#define __SCU_H__
+
+void disable_scu(unsigned long mpidr);
+void enable_scu(unsigned long mpidr);
+
+#endif
diff --git a/plat/mediatek/mt8173/mt8173_def.h b/plat/mediatek/mt8173/mt8173_def.h
new file mode 100644
index 00000000..ecf4cc63
--- /dev/null
+++ b/plat/mediatek/mt8173/mt8173_def.h
@@ -0,0 +1,115 @@
+/*
+ * Copyright (c) 2014-2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __PLAT_DEF_H__
+#define __PLAT_DEF_H__
+
+#define MT8173_PRIMARY_CPU	0x0
+
+/* Special value used to verify platform parameters from BL2 to BL3-1 */
+#define MT_BL31_PLAT_PARAM_VAL	0x0f1e2d3c4b5a6978ULL
+
+#define IO_PHYS			(0x10000000)
+#define INFRACFG_AO_BASE	(IO_PHYS + 0x1000)
+#define GPIO_BASE		(IO_PHYS + 0x5000)
+#define SPM_BASE		(IO_PHYS + 0x6000)
+#define RGU_BASE		(IO_PHYS + 0x7000)
+#define PMIC_WRAP_BASE		(IO_PHYS + 0xD000)
+#define MCUCFG_BASE		(IO_PHYS + 0x200000)
+#define TRNG_base		(IO_PHYS + 0x20F000)
+#define MT_GIC_BASE		(IO_PHYS + 0x220000)
+#define PLAT_MT_CCI_BASE	(IO_PHYS + 0x390000)
+
+/* Aggregate of all devices in the first GB */
+#define MTK_DEV_RNG0_BASE	IO_PHYS
+#define MTK_DEV_RNG0_SIZE	0x400000
+#define MTK_DEV_RNG1_BASE	(IO_PHYS + 0x1000000)
+#define MTK_DEV_RNG1_SIZE	0x4000000
+
+/*******************************************************************************
+ * UART related constants
+ ******************************************************************************/
+#define MT8173_UART0_BASE	(IO_PHYS + 0x01002000)
+#define MT8173_UART1_BASE	(IO_PHYS + 0x01003000)
+#define MT8173_UART2_BASE	(IO_PHYS + 0x01004000)
+#define MT8173_UART3_BASE	(IO_PHYS + 0x01005000)
+
+#define MT8173_BAUDRATE		(115200)
+#define MT8173_UART_CLOCK	(26000000)
+
+/*******************************************************************************
+ * System counter frequency related constants
+ ******************************************************************************/
+#define SYS_COUNTER_FREQ_IN_TICKS	13000000
+#define SYS_COUNTER_FREQ_IN_MHZ		13
+
+/*******************************************************************************
+ * GIC-400 & interrupt handling related constants
+ ******************************************************************************/
+
+/* Base MTK_platform compatible GIC memory map */
+#define BASE_GICD_BASE		(MT_GIC_BASE + 0x1000)
+#define BASE_GICC_BASE		(MT_GIC_BASE + 0x2000)
+#define BASE_GICR_BASE		0	/* no GICR in GIC-400 */
+#define BASE_GICH_BASE		(MT_GIC_BASE + 0x4000)
+#define BASE_GICV_BASE		(MT_GIC_BASE + 0x6000)
+#define INT_POL_CTL0		0x10200620
+
+#define GIC_PRIVATE_SIGNALS	(32)
+
+/*******************************************************************************
+ * CCI-400 related constants
+ ******************************************************************************/
+#define PLAT_MT_CCI_CLUSTER0_SL_IFACE_IX	4
+#define PLAT_MT_CCI_CLUSTER1_SL_IFACE_IX	3
+
+/*******************************************************************************
+ * WDT related constants
+ ******************************************************************************/
+#define MTK_WDT_BASE		(RGU_BASE + 0)
+#define MTK_WDT_SWRST		(MTK_WDT_BASE + 0x0014)
+
+#define MTK_WDT_MODE_DUAL_MODE	0x0040
+#define MTK_WDT_MODE_IRQ	0x0008
+#define MTK_WDT_MODE_KEY	0x22000000
+#define MTK_WDT_MODE_EXTEN	0x0004
+#define MTK_WDT_SWRST_KEY	0x1209
+
+/* FIQ platform related define */
+#define MT_IRQ_SEC_SGI_0	8
+#define MT_IRQ_SEC_SGI_1	9
+#define MT_IRQ_SEC_SGI_2	10
+#define MT_IRQ_SEC_SGI_3	11
+#define MT_IRQ_SEC_SGI_4	12
+#define MT_IRQ_SEC_SGI_5	13
+#define MT_IRQ_SEC_SGI_6	14
+#define MT_IRQ_SEC_SGI_7	15
+
+#endif /* __PLAT_DEF_H__ */
diff --git a/plat/mediatek/mt8173/plat_delay_timer.c b/plat/mediatek/mt8173/plat_delay_timer.c
new file mode 100644
index 00000000..cc66b809
--- /dev/null
+++ b/plat/mediatek/mt8173/plat_delay_timer.c
@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <arch_helpers.h>
+#include <delay_timer.h>
+#include <mt8173_def.h>
+
+static uint32_t plat_get_timer_value(void)
+{
+	/* Generic delay timer implementation expects the timer to be a down
+	 * counter. We apply bitwise NOT operator to the tick values returned
+	 * by read_cntpct_el0() to simulate the down counter. */
+	return (uint32_t)(~read_cntpct_el0());
+}
+
+static const timer_ops_t plat_timer_ops = {
+	.get_timer_value	= plat_get_timer_value,
+	.clk_mult		= 1,
+	.clk_div		= SYS_COUNTER_FREQ_IN_MHZ,
+};
+
+void plat_delay_timer_init(void)
+{
+	timer_init(&plat_timer_ops);
+}
diff --git a/plat/mediatek/mt8173/plat_mt_gic.c b/plat/mediatek/mt8173/plat_mt_gic.c
new file mode 100644
index 00000000..c9bdaa90
--- /dev/null
+++ b/plat/mediatek/mt8173/plat_mt_gic.c
@@ -0,0 +1,52 @@
+/*
+ * Copyright (c) 2013-2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <arm_gic.h>
+#include <bl_common.h>
+#include <mt8173_def.h>
+
+const unsigned int mt_irq_sec_array[] = {
+	MT_IRQ_SEC_SGI_0,
+	MT_IRQ_SEC_SGI_1,
+	MT_IRQ_SEC_SGI_2,
+	MT_IRQ_SEC_SGI_3,
+	MT_IRQ_SEC_SGI_4,
+	MT_IRQ_SEC_SGI_5,
+	MT_IRQ_SEC_SGI_6,
+	MT_IRQ_SEC_SGI_7
+};
+
+void plat_mt_gic_init(void)
+{
+	arm_gic_init(BASE_GICC_BASE,
+		BASE_GICD_BASE,
+		BASE_GICR_BASE,
+		mt_irq_sec_array,
+		ARRAY_SIZE(mt_irq_sec_array));
+}
diff --git a/plat/mediatek/mt8173/plat_pm.c b/plat/mediatek/mt8173/plat_pm.c
new file mode 100644
index 00000000..e663b94f
--- /dev/null
+++ b/plat/mediatek/mt8173/plat_pm.c
@@ -0,0 +1,533 @@
+/*
+ * Copyright (c) 2013-2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <arch_helpers.h>
+#include <arm_gic.h>
+#include <assert.h>
+#include <bakery_lock.h>
+#include <cci.h>
+#include <console.h>
+#include <debug.h>
+#include <errno.h>
+#include <gpio.h>
+#include <mcucfg.h>
+#include <mmio.h>
+#include <mt8173_def.h>
+#include <mt_cpuxgpt.h> /* generic_timer_backup() */
+#include <plat_private.h>
+#include <power_tracer.h>
+#include <psci.h>
+#include <rtc.h>
+#include <scu.h>
+#include <spm_hotplug.h>
+#include <spm_mcdi.h>
+#include <spm_suspend.h>
+
+struct core_context {
+	unsigned long timer_data[8];
+	unsigned int count;
+	unsigned int rst;
+	unsigned int abt;
+	unsigned int brk;
+};
+
+struct cluster_context {
+	struct core_context core[PLATFORM_MAX_CPUS_PER_CLUSTER];
+};
+
+/*
+ * Top level structure to hold the complete context of a multi cluster system
+ */
+struct system_context {
+	struct cluster_context cluster[PLATFORM_CLUSTER_COUNT];
+};
+
+/*
+ * Top level structure which encapsulates the context of the entire system
+ */
+static struct system_context dormant_data[1];
+
+static inline struct cluster_context *system_cluster(
+						struct system_context *system,
+						uint32_t clusterid)
+{
+	return &system->cluster[clusterid];
+}
+
+static inline struct core_context *cluster_core(struct cluster_context *cluster,
+						uint32_t cpuid)
+{
+	return &cluster->core[cpuid];
+}
+
+static struct cluster_context *get_cluster_data(unsigned long mpidr)
+{
+	uint32_t clusterid;
+
+	clusterid = (mpidr & MPIDR_CLUSTER_MASK) >> MPIDR_AFFINITY_BITS;
+
+	return system_cluster(dormant_data, clusterid);
+}
+
+static struct core_context *get_core_data(unsigned long mpidr)
+{
+	struct cluster_context *cluster;
+	uint32_t cpuid;
+
+	cluster = get_cluster_data(mpidr);
+	cpuid = mpidr & MPIDR_CPU_MASK;
+
+	return cluster_core(cluster, cpuid);
+}
+
+static void mt_save_generic_timer(unsigned long *container)
+{
+	uint64_t ctl;
+	uint64_t val;
+
+	__asm__ volatile("mrs	%x0, cntkctl_el1\n\t"
+			 "mrs	%x1, cntp_cval_el0\n\t"
+			 "stp	%x0, %x1, [%2, #0]"
+			 : "=&r" (ctl), "=&r" (val)
+			 : "r" (container)
+			 : "memory");
+
+	__asm__ volatile("mrs	%x0, cntp_tval_el0\n\t"
+			 "mrs	%x1, cntp_ctl_el0\n\t"
+			 "stp	%x0, %x1, [%2, #16]"
+			 : "=&r" (val), "=&r" (ctl)
+			 : "r" (container)
+			 : "memory");
+
+	__asm__ volatile("mrs	%x0, cntv_tval_el0\n\t"
+			 "mrs	%x1, cntv_ctl_el0\n\t"
+			 "stp	%x0, %x1, [%2, #32]"
+			 : "=&r" (val), "=&r" (ctl)
+			 : "r" (container)
+			 : "memory");
+}
+
+static void mt_restore_generic_timer(unsigned long *container)
+{
+	uint64_t ctl;
+	uint64_t val;
+
+	__asm__ volatile("ldp	%x0, %x1, [%2, #0]\n\t"
+			 "msr	cntkctl_el1, %x0\n\t"
+			 "msr	cntp_cval_el0, %x1"
+			 : "=&r" (ctl), "=&r" (val)
+			 : "r" (container)
+			 : "memory");
+
+	__asm__ volatile("ldp	%x0, %x1, [%2, #16]\n\t"
+			 "msr	cntp_tval_el0, %x0\n\t"
+			 "msr	cntp_ctl_el0, %x1"
+			 : "=&r" (val), "=&r" (ctl)
+			 : "r" (container)
+			 : "memory");
+
+	__asm__ volatile("ldp	%x0, %x1, [%2, #32]\n\t"
+			 "msr	cntv_tval_el0, %x0\n\t"
+			 "msr	cntv_ctl_el0, %x1"
+			 : "=&r" (val), "=&r" (ctl)
+			 : "r" (container)
+			 : "memory");
+}
+
+static inline uint64_t read_cntpctl(void)
+{
+	uint64_t cntpctl;
+
+	__asm__ volatile("mrs	%x0, cntp_ctl_el0"
+			 : "=r" (cntpctl) : : "memory");
+
+	return cntpctl;
+}
+
+static inline void write_cntpctl(uint64_t cntpctl)
+{
+	__asm__ volatile("msr	cntp_ctl_el0, %x0" : : "r"(cntpctl));
+}
+
+static void stop_generic_timer(void)
+{
+	/*
+	 * Disable the timer and mask the irq to prevent
+	 * suprious interrupts on this cpu interface. It
+	 * will bite us when we come back if we don't. It
+	 * will be replayed on the inbound cluster.
+	 */
+	uint64_t cntpctl = read_cntpctl();
+
+	write_cntpctl(clr_cntp_ctl_enable(cntpctl));
+}
+
+static void mt_cpu_save(unsigned long mpidr)
+{
+	struct core_context *core;
+
+	core = get_core_data(mpidr);
+	mt_save_generic_timer(core->timer_data);
+
+	/* disable timer irq, and upper layer should enable it again. */
+	stop_generic_timer();
+}
+
+static void mt_cpu_restore(unsigned long mpidr)
+{
+	struct core_context *core;
+
+	core = get_core_data(mpidr);
+	mt_restore_generic_timer(core->timer_data);
+}
+
+static void mt_platform_save_context(unsigned long mpidr)
+{
+	/* mcusys_save_context: */
+	mt_cpu_save(mpidr);
+}
+
+static void mt_platform_restore_context(unsigned long mpidr)
+{
+	/* mcusys_restore_context: */
+	mt_cpu_restore(mpidr);
+}
+
+/*******************************************************************************
+* Private function which is used to determine if any platform actions
+* should be performed for the specified affinity instance given its
+* state. Nothing needs to be done if the 'state' is not off or if this is not
+* the highest affinity level which will enter the 'state'.
+*******************************************************************************/
+static int32_t plat_do_plat_actions(unsigned int afflvl, unsigned int state)
+{
+	unsigned int max_phys_off_afflvl;
+
+	assert(afflvl <= MPIDR_AFFLVL2);
+
+	if (state != PSCI_STATE_OFF)
+		return -EAGAIN;
+
+	/*
+	 * Find the highest affinity level which will be suspended and postpone
+	 * all the platform specific actions until that level is hit.
+	 */
+	max_phys_off_afflvl = psci_get_max_phys_off_afflvl();
+	assert(max_phys_off_afflvl != PSCI_INVALID_DATA);
+	if (afflvl != max_phys_off_afflvl)
+		return -EAGAIN;
+
+	return 0;
+}
+
+/*******************************************************************************
+ * MTK_platform handler called when an affinity instance is about to enter
+ * standby.
+ ******************************************************************************/
+static void plat_affinst_standby(unsigned int power_state)
+{
+	unsigned int target_afflvl;
+
+	/* Sanity check the requested state */
+	target_afflvl = psci_get_pstate_afflvl(power_state);
+
+	/*
+	 * It's possible to enter standby only on affinity level 0 i.e. a cpu
+	 * on the MTK_platform. Ignore any other affinity level.
+	 */
+	if (target_afflvl == MPIDR_AFFLVL0) {
+		/*
+		 * Enter standby state. dsb is good practice before using wfi
+		 * to enter low power states.
+		 */
+		dsb();
+		wfi();
+	}
+}
+
+/*******************************************************************************
+ * MTK_platform handler called when an affinity instance is about to be turned
+ * on. The level and mpidr determine the affinity instance.
+ ******************************************************************************/
+static int plat_affinst_on(unsigned long mpidr,
+		    unsigned long sec_entrypoint,
+		    unsigned int afflvl,
+		    unsigned int state)
+{
+	int rc = PSCI_E_SUCCESS;
+	unsigned long cpu_id;
+	unsigned long cluster_id;
+	uintptr_t rv;
+
+	/*
+	 * It's possible to turn on only affinity level 0 i.e. a cpu
+	 * on the MTK_platform. Ignore any other affinity level.
+	 */
+	if (afflvl != MPIDR_AFFLVL0)
+		return rc;
+
+	cpu_id = mpidr & MPIDR_CPU_MASK;
+	cluster_id = mpidr & MPIDR_CLUSTER_MASK;
+
+	if (cluster_id)
+		rv = (uintptr_t)&mt8173_mcucfg->mp1_rv_addr[cpu_id].rv_addr_lw;
+	else
+		rv = (uintptr_t)&mt8173_mcucfg->mp0_rv_addr[cpu_id].rv_addr_lw;
+
+	mmio_write_32(rv, sec_entrypoint);
+	INFO("mt_on[%ld:%ld], entry %x\n",
+		cluster_id, cpu_id, mmio_read_32(rv));
+
+	spm_hotplug_on(mpidr);
+
+	return rc;
+}
+
+/*******************************************************************************
+ * MTK_platform handler called when an affinity instance is about to be turned
+ * off. The level and mpidr determine the affinity instance. The 'state' arg.
+ * allows the platform to decide whether the cluster is being turned off and
+ * take apt actions.
+ *
+ * CAUTION: This function is called with coherent stacks so that caches can be
+ * turned off, flushed and coherency disabled. There is no guarantee that caches
+ * will remain turned on across calls to this function as each affinity level is
+ * dealt with. So do not write & read global variables across calls. It will be
+ * wise to do flush a write to the global to prevent unpredictable results.
+ ******************************************************************************/
+static void plat_affinst_off(unsigned int afflvl, unsigned int state)
+{
+	unsigned long mpidr = read_mpidr_el1();
+
+	/* Determine if any platform actions need to be executed. */
+	if (plat_do_plat_actions(afflvl, state) == -EAGAIN)
+		return;
+
+	/* Prevent interrupts from spuriously waking up this cpu */
+	arm_gic_cpuif_deactivate();
+
+	spm_hotplug_off(mpidr);
+
+	trace_power_flow(mpidr, CPU_DOWN);
+
+	if (afflvl != MPIDR_AFFLVL0) {
+		/* Disable coherency if this cluster is to be turned off */
+		plat_cci_disable();
+
+		trace_power_flow(mpidr, CLUSTER_DOWN);
+	}
+}
+
+/*******************************************************************************
+ * MTK_platform handler called when an affinity instance is about to be
+ * suspended. The level and mpidr determine the affinity instance. The 'state'
+ * arg. allows the platform to decide whether the cluster is being turned off
+ * and take apt actions.
+ *
+ * CAUTION: This function is called with coherent stacks so that caches can be
+ * turned off, flushed and coherency disabled. There is no guarantee that caches
+ * will remain turned on across calls to this function as each affinity level is
+ * dealt with. So do not write & read global variables across calls. It will be
+ * wise to do flush a write to the global to prevent unpredictable results.
+ ******************************************************************************/
+static void plat_affinst_suspend(unsigned long sec_entrypoint,
+			  unsigned int afflvl,
+			  unsigned int state)
+{
+	unsigned long mpidr = read_mpidr_el1();
+	unsigned long cluster_id;
+	unsigned long cpu_id;
+	uintptr_t rv;
+
+	/* Determine if any platform actions need to be executed. */
+	if (plat_do_plat_actions(afflvl, state) == -EAGAIN)
+		return;
+
+	cpu_id = mpidr & MPIDR_CPU_MASK;
+	cluster_id = mpidr & MPIDR_CLUSTER_MASK;
+
+	if (cluster_id)
+		rv = (uintptr_t)&mt8173_mcucfg->mp1_rv_addr[cpu_id].rv_addr_lw;
+	else
+		rv = (uintptr_t)&mt8173_mcucfg->mp0_rv_addr[cpu_id].rv_addr_lw;
+
+	mmio_write_32(rv, sec_entrypoint);
+
+	if (afflvl == MPIDR_AFFLVL0)
+		spm_mcdi_prepare(mpidr);
+
+	if (afflvl >= MPIDR_AFFLVL0)
+		mt_platform_save_context(mpidr);
+
+	/* Perform the common cluster specific operations */
+	if (afflvl >= MPIDR_AFFLVL1) {
+		/* Disable coherency if this cluster is to be turned off */
+		plat_cci_disable();
+		disable_scu(mpidr);
+
+		trace_power_flow(mpidr, CLUSTER_SUSPEND);
+	}
+
+	if (afflvl >= MPIDR_AFFLVL2) {
+		generic_timer_backup();
+		spm_system_suspend();
+		/* Prevent interrupts from spuriously waking up this cpu */
+		arm_gic_cpuif_deactivate();
+	}
+}
+
+/*******************************************************************************
+ * MTK_platform handler called when an affinity instance has just been powered
+ * on after being turned off earlier. The level and mpidr determine the affinity
+ * instance. The 'state' arg. allows the platform to decide whether the cluster
+ * was turned off prior to wakeup and do what's necessary to setup it up
+ * correctly.
+ ******************************************************************************/
+static void plat_affinst_on_finish(unsigned int afflvl, unsigned int state)
+{
+	unsigned long mpidr = read_mpidr_el1();
+
+	/* Determine if any platform actions need to be executed. */
+	if (plat_do_plat_actions(afflvl, state) == -EAGAIN)
+		return;
+
+	/* Perform the common cluster specific operations */
+	if (afflvl >= MPIDR_AFFLVL1) {
+		enable_scu(mpidr);
+
+		/* Enable coherency if this cluster was off */
+		plat_cci_enable();
+		trace_power_flow(mpidr, CLUSTER_UP);
+	}
+
+	/* Enable the gic cpu interface */
+	arm_gic_cpuif_setup();
+	arm_gic_pcpu_distif_setup();
+	trace_power_flow(mpidr, CPU_UP);
+}
+
+/*******************************************************************************
+ * MTK_platform handler called when an affinity instance has just been powered
+ * on after having been suspended earlier. The level and mpidr determine the
+ * affinity instance.
+ ******************************************************************************/
+static void plat_affinst_suspend_finish(unsigned int afflvl, unsigned int state)
+{
+	unsigned long mpidr = read_mpidr_el1();
+
+	/* Determine if any platform actions need to be executed. */
+	if (plat_do_plat_actions(afflvl, state) == -EAGAIN)
+		return;
+
+	if (afflvl >= MPIDR_AFFLVL2) {
+		/* Enable the gic cpu interface */
+		arm_gic_setup();
+		arm_gic_cpuif_setup();
+		spm_system_suspend_finish();
+	}
+
+	/* Perform the common cluster specific operations */
+	if (afflvl >= MPIDR_AFFLVL1) {
+		enable_scu(mpidr);
+
+		/* Enable coherency if this cluster was off */
+		plat_cci_enable();
+		trace_power_flow(mpidr, CLUSTER_UP);
+	}
+
+	if (afflvl >= MPIDR_AFFLVL0)
+		mt_platform_restore_context(mpidr);
+
+	if (afflvl == MPIDR_AFFLVL0)
+		spm_mcdi_finish(mpidr);
+
+	arm_gic_pcpu_distif_setup();
+}
+
+static unsigned int plat_get_sys_suspend_power_state(void)
+{
+	/* StateID: 0, StateType: 1(power down), PowerLevel: 2(system) */
+	return psci_make_powerstate(0, 1, 2);
+}
+
+/*******************************************************************************
+ * MTK handlers to shutdown/reboot the system
+ ******************************************************************************/
+static void __dead2 plat_system_off(void)
+{
+	INFO("MTK System Off\n");
+
+	gpio_set(GPIO120, GPIO_OUT_ZERO);
+	rtc_bbpu_power_down();
+
+	wfi();
+	ERROR("MTK System Off: operation not handled.\n");
+	panic();
+}
+
+static void __dead2 plat_system_reset(void)
+{
+	/* Write the System Configuration Control Register */
+	INFO("MTK System Reset\n");
+
+	mmio_clrbits_32(MTK_WDT_BASE,
+		(MTK_WDT_MODE_DUAL_MODE | MTK_WDT_MODE_IRQ));
+	mmio_setbits_32(MTK_WDT_BASE, (MTK_WDT_MODE_KEY | MTK_WDT_MODE_EXTEN));
+	mmio_setbits_32(MTK_WDT_SWRST, MTK_WDT_SWRST_KEY);
+
+	wfi();
+	ERROR("MTK System Reset: operation not handled.\n");
+	panic();
+}
+
+/*******************************************************************************
+ * Export the platform handlers to enable psci to invoke them
+ ******************************************************************************/
+static const plat_pm_ops_t plat_plat_pm_ops = {
+	.affinst_standby		= plat_affinst_standby,
+	.affinst_on			= plat_affinst_on,
+	.affinst_off			= plat_affinst_off,
+	.affinst_suspend		= plat_affinst_suspend,
+	.affinst_on_finish		= plat_affinst_on_finish,
+	.affinst_suspend_finish		= plat_affinst_suspend_finish,
+	.system_off			= plat_system_off,
+	.system_reset			= plat_system_reset,
+	.get_sys_suspend_power_state	= plat_get_sys_suspend_power_state,
+};
+
+/*******************************************************************************
+ * Export the platform specific power ops & initialize the mtk_platform power
+ * controller
+ ******************************************************************************/
+int platform_setup_pm(const plat_pm_ops_t **plat_ops)
+{
+	*plat_ops = &plat_plat_pm_ops;
+	return 0;
+}
diff --git a/plat/mediatek/mt8173/plat_private.h b/plat/mediatek/mt8173/plat_private.h
new file mode 100644
index 00000000..bdde6a6c
--- /dev/null
+++ b/plat/mediatek/mt8173/plat_private.h
@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2014-2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __PLAT_PRIVATE_H__
+#define __PLAT_PRIVATE_H__
+
+/*******************************************************************************
+ * Function and variable prototypes
+ ******************************************************************************/
+void plat_configure_mmu_el3(unsigned long total_base,
+			    unsigned long total_size,
+			    unsigned long,
+			    unsigned long,
+			    unsigned long,
+			    unsigned long);
+
+void plat_cci_init(void);
+void plat_cci_enable(void);
+void plat_cci_disable(void);
+
+/* Declarations for plat_mt_gic.c */
+void plat_mt_gic_init(void);
+
+/* Declarations for plat_topology.c */
+int mt_setup_topology(void);
+
+void plat_delay_timer_init(void);
+
+#endif /* __PLAT_PRIVATE_H__ */
diff --git a/plat/mediatek/mt8173/plat_sip_calls.c b/plat/mediatek/mt8173/plat_sip_calls.c
new file mode 100644
index 00000000..92deb607
--- /dev/null
+++ b/plat/mediatek/mt8173/plat_sip_calls.c
@@ -0,0 +1,57 @@
+/*
+ * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <mmio.h>
+#include <mtk_sip_svc.h>
+
+/* Authorized secure register list */
+enum {
+	SREG_HDMI_COLOR_EN = 0x14000904
+};
+
+static const uint32_t authorized_sreg[] = {
+	SREG_HDMI_COLOR_EN
+};
+
+#define authorized_sreg_cnt	\
+	(sizeof(authorized_sreg) / sizeof(authorized_sreg[0]))
+
+uint64_t mt_sip_set_authorized_sreg(uint32_t sreg, uint32_t val)
+{
+	uint64_t i;
+
+	for (i = 0; i < authorized_sreg_cnt; i++) {
+		if (authorized_sreg[i] == sreg) {
+			mmio_write_32(sreg, val);
+			return MTK_SIP_E_SUCCESS;
+		}
+	}
+
+	return MTK_SIP_E_INVALID_PARAM;
+}
diff --git a/plat/mediatek/mt8173/plat_topology.c b/plat/mediatek/mt8173/plat_topology.c
new file mode 100644
index 00000000..eacebe0c
--- /dev/null
+++ b/plat/mediatek/mt8173/plat_topology.c
@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 2013-2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <arch.h>
+#include <psci.h>
+
+unsigned int plat_get_aff_count(unsigned int aff_lvl, unsigned long mpidr)
+{
+	/* Report 1 (absent) instance at levels higher that the cluster level */
+	if (aff_lvl > MPIDR_AFFLVL1)
+		return 1;
+
+	if (aff_lvl == MPIDR_AFFLVL1)
+		return 2; /* We have two clusters */
+
+	return mpidr & 0x100 ? 2 : 2; /* 2 cpus in cluster 1, 2 in cluster 0 */
+}
+
+unsigned int plat_get_aff_state(unsigned int aff_lvl, unsigned long mpidr)
+{
+	return aff_lvl <= MPIDR_AFFLVL2 ? PSCI_AFF_PRESENT : PSCI_AFF_ABSENT;
+}
+
+int mt_setup_topology(void)
+{
+	/* [TODO] Make topology configurable via SCC */
+	return 0;
+}
diff --git a/plat/mediatek/mt8173/platform.mk b/plat/mediatek/mt8173/platform.mk
new file mode 100644
index 00000000..30df32f2
--- /dev/null
+++ b/plat/mediatek/mt8173/platform.mk
@@ -0,0 +1,92 @@
+#
+# Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#
+# Redistributions of source code must retain the above copyright notice, this
+# list of conditions and the following disclaimer.
+#
+# Redistributions in binary form must reproduce the above copyright notice,
+# this list of conditions and the following disclaimer in the documentation
+# and/or other materials provided with the distribution.
+#
+# Neither the name of ARM nor the names of its contributors may be used
+# to endorse or promote products derived from this software without specific
+# prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+
+MTK_PLAT		:=	plat/mediatek
+MTK_PLAT_SOC		:=	${MTK_PLAT}/${PLAT}
+
+PLAT_INCLUDES		:=	-I${MTK_PLAT}/common/				\
+				-I${MTK_PLAT_SOC}/				\
+				-I${MTK_PLAT_SOC}/drivers/gpio/			\
+				-I${MTK_PLAT_SOC}/drivers/mtcmos/		\
+				-I${MTK_PLAT_SOC}/drivers/pmic/			\
+				-I${MTK_PLAT_SOC}/drivers/rtc/			\
+				-I${MTK_PLAT_SOC}/drivers/spm/			\
+				-I${MTK_PLAT_SOC}/drivers/timer/		\
+				-I${MTK_PLAT_SOC}/drivers/uart/			\
+				-I${MTK_PLAT_SOC}/include/
+
+PLAT_BL_COMMON_SOURCES	:=	lib/aarch64/xlat_tables.c			\
+				plat/common/aarch64/plat_common.c		\
+				plat/common/plat_gic.c
+
+BL31_SOURCES		+=	drivers/arm/cci/cci.c				\
+				drivers/arm/gic/arm_gic.c			\
+				drivers/arm/gic/gic_v2.c			\
+				drivers/arm/gic/gic_v3.c			\
+				drivers/console/console.S			\
+				drivers/delay_timer/delay_timer.c		\
+				lib/cpus/aarch64/aem_generic.S			\
+				lib/cpus/aarch64/cortex_a53.S			\
+				lib/cpus/aarch64/cortex_a57.S			\
+				lib/cpus/aarch64/cortex_a72.S			\
+				plat/common/aarch64/platform_mp_stack.S		\
+				${MTK_PLAT}/common/mtk_sip_svc.c		\
+				${MTK_PLAT_SOC}/aarch64/plat_helpers.S		\
+				${MTK_PLAT_SOC}/aarch64/platform_common.c	\
+				${MTK_PLAT_SOC}/bl31_plat_setup.c		\
+				${MTK_PLAT_SOC}/drivers/gpio/gpio.c		\
+				${MTK_PLAT_SOC}/drivers/mtcmos/mtcmos.c		\
+				${MTK_PLAT_SOC}/drivers/pmic/pmic_wrap_init.c	\
+				${MTK_PLAT_SOC}/drivers/rtc/rtc.c		\
+				${MTK_PLAT_SOC}/drivers/spm/spm.c		\
+				${MTK_PLAT_SOC}/drivers/spm/spm_hotplug.c	\
+				${MTK_PLAT_SOC}/drivers/spm/spm_mcdi.c		\
+				${MTK_PLAT_SOC}/drivers/spm/spm_suspend.c	\
+				${MTK_PLAT_SOC}/drivers/timer/mt_cpuxgpt.c	\
+				${MTK_PLAT_SOC}/drivers/uart/8250_console.S	\
+				${MTK_PLAT_SOC}/plat_delay_timer.c		\
+				${MTK_PLAT_SOC}/plat_mt_gic.c			\
+				${MTK_PLAT_SOC}/plat_pm.c			\
+				${MTK_PLAT_SOC}/plat_sip_calls.c		\
+				${MTK_PLAT_SOC}/plat_topology.c			\
+				${MTK_PLAT_SOC}/power_tracer.c			\
+				${MTK_PLAT_SOC}/scu.c
+
+# Flag used by the MTK_platform port to determine the version of ARM GIC
+# architecture to use for interrupt management in EL3.
+ARM_GIC_ARCH		:=	2
+$(eval $(call add_define,ARM_GIC_ARCH))
+
+# Enable workarounds for selected Cortex-A53 erratas.
+ERRATA_A53_826319	:=	1
+ERRATA_A53_836870	:=	1
+
+# indicate the reset vector address can be programmed
+PROGRAMMABLE_RESET_ADDRESS	:=	1
diff --git a/plat/mediatek/mt8173/power_tracer.c b/plat/mediatek/mt8173/power_tracer.c
new file mode 100644
index 00000000..15eb2ced
--- /dev/null
+++ b/plat/mediatek/mt8173/power_tracer.c
@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <arch.h>
+#include <debug.h>
+#include <power_tracer.h>
+
+#define trace_log(...)  INFO("psci: " __VA_ARGS__)
+
+void trace_power_flow(unsigned long mpidr, unsigned char mode)
+{
+	switch (mode) {
+	case CPU_UP:
+		trace_log("core %ld:%ld ON\n",
+			  (mpidr & MPIDR_CLUSTER_MASK) >> MPIDR_AFFINITY_BITS,
+			  (mpidr & MPIDR_CPU_MASK));
+		break;
+	case CPU_DOWN:
+		trace_log("core %ld:%ld OFF\n",
+			  (mpidr & MPIDR_CLUSTER_MASK) >> MPIDR_AFFINITY_BITS,
+			  (mpidr & MPIDR_CPU_MASK));
+		break;
+	case CPU_SUSPEND:
+		trace_log("core %ld:%ld SUSPEND\n",
+			  (mpidr & MPIDR_CLUSTER_MASK) >> MPIDR_AFFINITY_BITS,
+			  (mpidr & MPIDR_CPU_MASK));
+		break;
+	case CLUSTER_UP:
+		trace_log("cluster %ld ON\n",
+			  (mpidr & MPIDR_CLUSTER_MASK) >> MPIDR_AFFINITY_BITS);
+		break;
+	case CLUSTER_DOWN:
+		trace_log("cluster %ld OFF\n",
+			  (mpidr & MPIDR_CLUSTER_MASK) >> MPIDR_AFFINITY_BITS);
+		break;
+	case CLUSTER_SUSPEND:
+		trace_log("cluster %ld SUSPEND\n",
+			  (mpidr & MPIDR_CLUSTER_MASK) >> MPIDR_AFFINITY_BITS);
+		break;
+	default:
+		trace_log("unknown power mode\n");
+		break;
+	}
+}
diff --git a/plat/mediatek/mt8173/scu.c b/plat/mediatek/mt8173/scu.c
new file mode 100644
index 00000000..88af787a
--- /dev/null
+++ b/plat/mediatek/mt8173/scu.c
@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <arch.h>
+#include <mcucfg.h>
+#include <mmio.h>
+
+void disable_scu(unsigned long mpidr)
+{
+	if (mpidr & MPIDR_CLUSTER_MASK)
+		mmio_setbits_32((uintptr_t)&mt8173_mcucfg->mp1_miscdbg,
+			MP1_ACINACTM);
+	else
+		mmio_setbits_32((uintptr_t)&mt8173_mcucfg->mp0_axi_config,
+			MP0_ACINACTM);
+}
+
+void enable_scu(unsigned long mpidr)
+{
+	if (mpidr & MPIDR_CLUSTER_MASK)
+		mmio_clrbits_32((uintptr_t)&mt8173_mcucfg->mp1_miscdbg,
+			MP1_ACINACTM);
+	else
+		mmio_clrbits_32((uintptr_t)&mt8173_mcucfg->mp0_axi_config,
+			MP0_ACINACTM);
+}