Add i.MX8 SoCs support

This patch adds i.MX8 SoCs ATFW support, including below
basic features:

* LPUART
* SCFW RPC
* SMP boot up

Each SoC will have its own platform definition and driver
to support.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Bai Ping <ping.bai@nxp.com>

1 files changed, 141 insertions, 0 deletions

diff --git a/plat/imx/common/imx8_helpers.S b/plat/imx/common/imx8_helpers.S
new file mode 100644
index 00000000..6f677ca9
--- /dev/null
+++ b/plat/imx/common/imx8_helpers.S
@@ -0,0 +1,141 @@
+/*
+ * 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 <platform_def.h>
+
+	.globl	plat_is_my_cpu_primary
+	.globl	plat_my_core_pos
+	.globl	plat_calc_core_pos
+	.globl	plat_reset_handler
+	.globl	plat_get_my_entrypoint
+	.globl	plat_secondary_cold_boot_setup
+	.globl	plat_crash_console_init
+	.globl	plat_crash_console_putc
+	.globl	platform_mem_init
+	.globl  imx_mailbox_init
+
+	/* ----------------------------------------------
+	 * The mailbox_base is used to distinguish warm/cold
+	 * reset. The mailbox_base is in the data section, not
+	 * in .bss, this allows function to start using this
+	 * variable before the runtime memory is initialized.
+	 * ----------------------------------------------
+	 */
+.section .data.mailbox_base ; .align 3
+	mailbox_base: .quad 0x0
+
+	/* ----------------------------------------------
+	 * unsigned int plat_is_my_cpu_primary(void);
+	 * This function checks if this is the primary CPU
+	 * ----------------------------------------------
+	 */
+func plat_is_my_cpu_primary
+	mrs	x0, mpidr_el1
+	and	x0, x0, #(MPIDR_CLUSTER_MASK | MPIDR_CPU_MASK)
+	cmp	x0, #PLAT_PRIMARY_CPU
+	cset	x0, eq
+	ret
+endfunc plat_is_my_cpu_primary
+
+	/* ----------------------------------------------
+	 * unsigned int plat_my_core_pos(void)
+	 * This Function uses the plat_calc_core_pos()
+	 * to get the index of the calling CPU.
+	 * ----------------------------------------------
+	 */
+func plat_my_core_pos
+	mrs	x0, mpidr_el1
+	and	x1, x0, #MPIDR_CPU_MASK
+	and 	x0, x0, #MPIDR_CLUSTER_MASK
+	add	x0, x1, x0, LSR #6
+	ret
+endfunc plat_my_core_pos
+
+	/*
+	 * unsigned int plat_calc_core_pos(uint64_t mpidr)
+	 * helper function to calculate the core position.
+	 * With this function.
+	 */
+func plat_calc_core_pos
+	and	x1, x0, #MPIDR_CPU_MASK
+	and 	x0, x0, #MPIDR_CLUSTER_MASK
+	add	x0, x1, x0, LSR #6
+	ret
+endfunc plat_calc_core_pos
+
+
+	/* ----------------------------------------------
+	 * function to handle platform specific reset.
+	 * ----------------------------------------------
+	 */
+func plat_reset_handler
+	/* enable EL2 cpuectlr RW access */
+	mov	x0, #0x73
+	msr	actlr_el3, x0
+	msr	actlr_el2, x0
+	isb
+	ret
+endfunc plat_reset_handler
+
+	/* ---------------------------------------------
+	 * function to get the entrypoint.
+	 * ---------------------------------------------
+	 */
+func plat_get_my_entrypoint
+	adrp	x1, mailbox_base
+	ldr	x0, [x1, :lo12:mailbox_base]
+	ret
+endfunc	plat_get_my_entrypoint
+
+func plat_secondary_cold_boot_setup
+	b	.
+endfunc plat_secondary_cold_boot_setup
+
+func plat_crash_console_init
+	/* TODO */
+	ret
+endfunc plat_crash_console_init
+
+func plat_crash_console_putc
+	/* TODO */
+	ret
+endfunc plat_crash_console_putc
+
+func platform_mem_init
+	ret
+endfunc platform_mem_init
+
+/* Init the mailbox base address */
+func imx_mailbox_init
+	adrp	x1, mailbox_base
+	str	x0, [x1, :lo12:mailbox_base]
+	ret
+endfunc imx_mailbox_init