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/*
* Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
* Copyright 2017 NXP
*
* 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 <assert.h>
#include <bl_common.h>
#include <console.h>
#include <context.h>
#include <context_mgmt.h>
#include <debug.h>
#include <mmio.h>
#include <platform.h>
#include <platform_def.h>
#include <plat_imx8.h>
#include <xlat_tables.h>
#include <soc.h>
/* linker defined symbols */
extern unsigned long __RO_START__;
extern unsigned long __RO_END__;
extern unsigned long __BL31_END__;
#if USE_COHERENT_MEM
extern unsigned long __COHERENT_RAM_START__;
extern unsigned long __COHERENT_RAM_END__;
#define BL31_COHERENT_RAM_BASE (unsigned long)(&__COHERENT_RAM_START__)
#define BL31_COHERENT_RAM_LIMIT (unsigned long)(&__COHERENT_RAM_END__)
#endif
#define BL31_RO_BASE (unsigned long)(&__RO_START__)
#define BL31_RO_LIMIT (unsigned long)(&__RO_END__)
#define BL31_END (unsigned long)(&__BL31_END__)
static entry_point_info_t bl32_image_ep_info;
static entry_point_info_t bl33_image_ep_info;
/* get SPSR for BL33 entry */
static uint32_t get_spsr_for_bl33_entry(void)
{
unsigned long el_status;
unsigned long mode;
uint32_t spsr;
/* figure out what mode we enter the non-secure world */
el_status = read_id_aa64pfr0_el1() >> ID_AA64PFR0_EL2_SHIFT;
el_status &= ID_AA64PFR0_ELX_MASK;
mode = (el_status) ? MODE_EL2 : MODE_EL1;
spsr = SPSR_64(mode, MODE_SP_ELX, DISABLE_ALL_EXCEPTIONS);
return spsr;
}
#define SCTR_BASE_ADDR 0x306c0000
#define CNTFID0_OFF 0x20
#define CNTFID1_OFF 0x24
#define SC_CNTCR_ENABLE (1 << 0)
#define SC_CNTCR_HDBG (1 << 1)
#define SC_CNTCR_FREQ0 (1 << 8)
#define SC_CNTCR_FREQ1 (1 << 9)
unsigned int freq;
void system_counter_init(void)
{
int val;
/* Update with accurate clock frequency */
freq = mmio_read_32(SCTR_BASE_ADDR + CNTFID0_OFF);
val = mmio_read_32(SCTR_BASE_ADDR + CNTCR_OFF);
val &= ~(SC_CNTCR_FREQ0 | SC_CNTCR_FREQ1);
val |= SC_CNTCR_FREQ0 | SC_CNTCR_ENABLE | SC_CNTCR_HDBG;
mmio_write_32(SCTR_BASE_ADDR + CNTCR_OFF, val);
}
void bl31_early_platform_setup(bl31_params_t *from_bl2,
void *plat_params_from_bl2)
{
int i;
/* enable CSU NS access permission */
for (i = 0; i < 64; i++) {
mmio_write_32(0x303e0000 + i * 4, 0xffffffff);
}
mmio_write_32(0x303a00ec, 0x0000ffff);
/* Power up VPU, DISP, GPU etc */
mmio_write_32(0x303a00f8, 0x3fef);
/* config the AIPSTZ1 */
mmio_write_32(0x301f0000, 0x77777777);
mmio_write_32(0x301f0004, 0x77777777);
mmio_write_32(0x301f0040, 0x0);
mmio_write_32(0x301f0044, 0x0);
mmio_write_32(0x301f0048, 0x0);
mmio_write_32(0x301f004c, 0x0);
mmio_write_32(0x301f0050, 0x0);
/* config the AIPSTZ3 */
mmio_write_32(0x309f0000, 0x77777777);
mmio_write_32(0x309f0004, 0x77777777);
mmio_write_32(0x309f0040, 0x0);
mmio_write_32(0x309f0044, 0x0);
mmio_write_32(0x309f0048, 0x0);
mmio_write_32(0x309f004c, 0x0);
mmio_write_32(0x309f0050, 0x0);
/* enable the system counter */
system_counter_init();
/*
* tell BL3-1 where the non-secure software image is located
* and the entry state information.
*/
bl33_image_ep_info.pc = PLAT_NS_IMAGE_OFFSET;
bl33_image_ep_info.spsr = get_spsr_for_bl33_entry();
SET_SECURITY_STATE(bl33_image_ep_info.h.attr, NON_SECURE);
}
void bl31_plat_arch_setup(void)
{
/* add the mmap */
mmap_add_region(BL31_BASE, BL31_BASE, 0x10000,
MT_MEMORY | MT_RW);
mmap_add_region(BL31_BASE, BL31_BASE, BL31_RO_LIMIT - BL31_RO_BASE,
MT_MEMORY | MT_RO);
mmap_add_region(IMX_BOOT_UART_BASE, IMX_BOOT_UART_BASE,
0x1000, MT_DEVICE | MT_RW);
mmap_add_region(IMX_SRC_BASE, IMX_SRC_BASE,
0x1000, MT_DEVICE | MT_RW);
mmap_add_region(IMX_GPC_BASE, IMX_GPC_BASE, 0x1000, MT_DEVICE | MT_RW);
mmap_add_region(IMX_ANAMIX_BASE, IMX_ANAMIX_BASE, 0x1000, MT_DEVICE | MT_RW);
mmap_add_region(PLAT_GICD_BASE, PLAT_GICD_BASE, 0x80000,
MT_DEVICE | MT_RW);
mmap_add_region(PLAT_GICR_BASE, PLAT_GICR_BASE, 0x80000,
MT_DEVICE | MT_RW);
#if USE_COHERENT_MEM
mmap_add_region(BL31_COHERENT_RAM_BASE, BL31_COHERENT_RAM_BASE,
BL31_COHERENT_RAM_LIMIT - BL31_COHERENT_RAM_BASE,
MT_DEVICE | MT_RW);
#endif
/* setup xlat table */
init_xlat_tables();
/* enable the MMU */
enable_mmu_el3(0);
}
void bl31_platform_setup(void)
{
/* init the GICv3 cpu and distributor interface */
plat_gic_driver_init();
plat_gic_init();
/* gpc init */
imx_gpc_init();
}
entry_point_info_t *bl31_plat_get_next_image_ep_info(unsigned int type)
{
if (type == NON_SECURE)
return &bl33_image_ep_info;
if (type == SECURE)
return &bl32_image_ep_info;
return NULL;
}
unsigned int plat_get_syscnt_freq2(void)
{
return freq;
}
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