plat/st/stm32mp1/bl2_plat_setup.c - tf-a-mtk - Git at Google

 /*
  * Copyright (c) 2015-2019, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */

 #include <assert.h>
 #include <string.h>

 #include <platform_def.h>

 #include <arch_helpers.h>
 #include <common/bl_common.h>
 #include <common/debug.h>
 #include <common/desc_image_load.h>
 #include <drivers/delay_timer.h>
 #include <drivers/generic_delay_timer.h>
 #include <drivers/st/bsec.h>
 #include <drivers/st/stm32_console.h>
 #include <drivers/st/stm32_iwdg.h>
 #include <drivers/st/stm32mp_pmic.h>
 #include <drivers/st/stm32mp_reset.h>
 #include <drivers/st/stm32mp1_clk.h>
 #include <drivers/st/stm32mp1_pwr.h>
 #include <drivers/st/stm32mp1_ram.h>
 #include <lib/mmio.h>
 #include <lib/optee_utils.h>
 #include <lib/xlat_tables/xlat_tables_v2.h>
 #include <plat/common/platform.h>

 #include <stm32mp1_context.h>
 #include <stm32mp1_dbgmcu.h>

 static struct console_stm32 console;
 static struct stm32mp_auth_ops stm32mp1_auth_ops;

 static void print_reset_reason(void)
 {
 	uint32_t rstsr = mmio_read_32(stm32mp_rcc_base() + RCC_MP_RSTSCLRR);

 	if (rstsr == 0U) {
 		WARN("Reset reason unknown\n");
 		return;
 	}

 	INFO("Reset reason (0x%x):\n", rstsr);

 	if ((rstsr & RCC_MP_RSTSCLRR_PADRSTF) == 0U) {
 		if ((rstsr & RCC_MP_RSTSCLRR_STDBYRSTF) != 0U) {
 			INFO("System exits from STANDBY\n");
 			return;
 		}

 		if ((rstsr & RCC_MP_RSTSCLRR_CSTDBYRSTF) != 0U) {
 			INFO("MPU exits from CSTANDBY\n");
 			return;
 		}
 	}

 	if ((rstsr & RCC_MP_RSTSCLRR_PORRSTF) != 0U) {
 		INFO("  Power-on Reset (rst_por)\n");
 		return;
 	}

 	if ((rstsr & RCC_MP_RSTSCLRR_BORRSTF) != 0U) {
 		INFO("  Brownout Reset (rst_bor)\n");
 		return;
 	}

 	if ((rstsr & RCC_MP_RSTSCLRR_MCSYSRSTF) != 0U) {
 		if ((rstsr & RCC_MP_RSTSCLRR_PADRSTF) != 0U) {
 			INFO("  System reset generated by MCU (MCSYSRST)\n");
 		} else {
 			INFO("  Local reset generated by MCU (MCSYSRST)\n");
 		}
 		return;
 	}

 	if ((rstsr & RCC_MP_RSTSCLRR_MPSYSRSTF) != 0U) {
 		INFO("  System reset generated by MPU (MPSYSRST)\n");
 		return;
 	}

 	if ((rstsr & RCC_MP_RSTSCLRR_HCSSRSTF) != 0U) {
 		INFO("  Reset due to a clock failure on HSE\n");
 		return;
 	}

 	if ((rstsr & RCC_MP_RSTSCLRR_IWDG1RSTF) != 0U) {
 		INFO("  IWDG1 Reset (rst_iwdg1)\n");
 		return;
 	}

 	if ((rstsr & RCC_MP_RSTSCLRR_IWDG2RSTF) != 0U) {
 		INFO("  IWDG2 Reset (rst_iwdg2)\n");
 		return;
 	}

 	if ((rstsr & RCC_MP_RSTSCLRR_MPUP0RSTF) != 0U) {
 		INFO("  MPU Processor 0 Reset\n");
 		return;
 	}

 	if ((rstsr & RCC_MP_RSTSCLRR_MPUP1RSTF) != 0U) {
 		INFO("  MPU Processor 1 Reset\n");
 		return;
 	}

 	if ((rstsr & RCC_MP_RSTSCLRR_PADRSTF) != 0U) {
 		INFO("  Pad Reset from NRST\n");
 		return;
 	}

 	if ((rstsr & RCC_MP_RSTSCLRR_VCORERSTF) != 0U) {
 		INFO("  Reset due to a failure of VDD_CORE\n");
 		return;
 	}

 	ERROR("  Unidentified reset reason\n");
 }

 void bl2_el3_early_platform_setup(u_register_t arg0,
 				  u_register_t arg1 __unused,
 				  u_register_t arg2 __unused,
 				  u_register_t arg3 __unused)
 {
 	stm32mp_save_boot_ctx_address(arg0);
 }

 void bl2_platform_setup(void)
 {
 	int ret;

 	if (dt_pmic_status() > 0) {
 		initialize_pmic();
 	}

 	ret = stm32mp1_ddr_probe();
 	if (ret < 0) {
 		ERROR("Invalid DDR init: error %d\n", ret);
 		panic();
 	}

 #ifdef AARCH32_SP_OPTEE
 	INFO("BL2 runs OP-TEE setup\n");
 	/* Initialize tzc400 after DDR initialization */
 	stm32mp1_security_setup();
 #else
 	INFO("BL2 runs SP_MIN setup\n");
 #endif
 }

 void bl2_el3_plat_arch_setup(void)
 {
 	int32_t result;
 	struct dt_node_info dt_uart_info;
 	const char *board_model;
 	boot_api_context_t *boot_context =
 		(boot_api_context_t *)stm32mp_get_boot_ctx_address();
 	uint32_t clk_rate;
 	uintptr_t pwr_base;
 	uintptr_t rcc_base;

 	mmap_add_region(BL_CODE_BASE, BL_CODE_BASE,
 			BL_CODE_END - BL_CODE_BASE,
 			MT_CODE | MT_SECURE);

 #ifdef AARCH32_SP_OPTEE
 	/* OP-TEE image needs post load processing: keep RAM read/write */
 	mmap_add_region(STM32MP_DDR_BASE + dt_get_ddr_size() -
 			STM32MP_DDR_S_SIZE - STM32MP_DDR_SHMEM_SIZE,
 			STM32MP_DDR_BASE + dt_get_ddr_size() -
 			STM32MP_DDR_S_SIZE - STM32MP_DDR_SHMEM_SIZE,
 			STM32MP_DDR_S_SIZE,
 			MT_MEMORY | MT_RW | MT_SECURE);

 	mmap_add_region(STM32MP_OPTEE_BASE, STM32MP_OPTEE_BASE,
 			STM32MP_OPTEE_SIZE,
 			MT_MEMORY | MT_RW | MT_SECURE);
 #else
 	/* Prevent corruption of preloaded BL32 */
 	mmap_add_region(BL32_BASE, BL32_BASE,
 			BL32_LIMIT - BL32_BASE,
 			MT_MEMORY | MT_RO | MT_SECURE);

 #endif
 	/* Map non secure DDR for BL33 load and DDR training area restore */
 	mmap_add_region(STM32MP_DDR_BASE,
 			STM32MP_DDR_BASE,
 			STM32MP_DDR_MAX_SIZE,
 			MT_MEMORY | MT_RW | MT_NS);

 	/* Prevent corruption of preloaded Device Tree */
 	mmap_add_region(DTB_BASE, DTB_BASE,
 			DTB_LIMIT - DTB_BASE,
 			MT_MEMORY | MT_RO | MT_SECURE);

 	configure_mmu();

 	if (dt_open_and_check() < 0) {
 		panic();
 	}

 	pwr_base = stm32mp_pwr_base();
 	rcc_base = stm32mp_rcc_base();

 	/*
 	 * Disable the backup domain write protection.
 	 * The protection is enable at each reset by hardware
 	 * and must be disabled by software.
 	 */
 	mmio_setbits_32(pwr_base + PWR_CR1, PWR_CR1_DBP);

 	while ((mmio_read_32(pwr_base + PWR_CR1) & PWR_CR1_DBP) == 0U) {
 		;
 	}

 	if (bsec_probe() != 0) {
 		panic();
 	}

 	/* Reset backup domain on cold boot cases */
 	if ((mmio_read_32(rcc_base + RCC_BDCR) & RCC_BDCR_RTCSRC_MASK) == 0U) {
 		mmio_setbits_32(rcc_base + RCC_BDCR, RCC_BDCR_VSWRST);

 		while ((mmio_read_32(rcc_base + RCC_BDCR) & RCC_BDCR_VSWRST) ==
 		       0U) {
 			;
 		}

 		mmio_clrbits_32(rcc_base + RCC_BDCR, RCC_BDCR_VSWRST);
 	}

 	/* Disable MCKPROT */
 	mmio_clrbits_32(rcc_base + RCC_TZCR, RCC_TZCR_MCKPROT);

 	generic_delay_timer_init();

 	if (stm32mp1_clk_probe() < 0) {
 		panic();
 	}

 	if (stm32mp1_clk_init() < 0) {
 		panic();
 	}

 	stm32mp1_syscfg_init();

 	result = dt_get_stdout_uart_info(&dt_uart_info);

 	if ((result <= 0) ||
 	    (dt_uart_info.status == 0U) ||
 	    (dt_uart_info.clock < 0) ||
 	    (dt_uart_info.reset < 0)) {
 		goto skip_console_init;
 	}

 	if (dt_set_stdout_pinctrl() != 0) {
 		goto skip_console_init;
 	}

 	stm32mp_clk_enable((unsigned long)dt_uart_info.clock);

 	stm32mp_reset_assert((uint32_t)dt_uart_info.reset);
 	udelay(2);
 	stm32mp_reset_deassert((uint32_t)dt_uart_info.reset);
 	mdelay(1);

 	clk_rate = stm32mp_clk_get_rate((unsigned long)dt_uart_info.clock);

 	if (console_stm32_register(dt_uart_info.base, clk_rate,
 				   STM32MP_UART_BAUDRATE, &console) == 0) {
 		panic();
 	}

 	console_set_scope(&console.console, CONSOLE_FLAG_BOOT |
 			  CONSOLE_FLAG_CRASH | CONSOLE_FLAG_TRANSLATE_CRLF);

 	stm32mp_print_cpuinfo();

 	board_model = dt_get_board_model();
 	if (board_model != NULL) {
 		NOTICE("Model: %s\n", board_model);
 	}

 	stm32mp_print_boardinfo();

 	if (boot_context->auth_status != BOOT_API_CTX_AUTH_NO) {
 		NOTICE("Bootrom authentication %s\n",
 		       (boot_context->auth_status == BOOT_API_CTX_AUTH_FAILED) ?
 		       "failed" : "succeeded");
 	}

 skip_console_init:
 	if (stm32_iwdg_init() < 0) {
 		panic();
 	}

 	stm32_iwdg_refresh();

 	result = stm32mp1_dbgmcu_freeze_iwdg2();
 	if (result != 0) {
 		INFO("IWDG2 freeze error : %i\n", result);
 	}

 	if (stm32_save_boot_interface(boot_context->boot_interface_selected,
 				      boot_context->boot_interface_instance) !=
 	    0) {
 		ERROR("Cannot save boot interface\n");
 	}

 	stm32mp1_auth_ops.check_key = boot_context->bootrom_ecdsa_check_key;
 	stm32mp1_auth_ops.verify_signature =
 		boot_context->bootrom_ecdsa_verify_signature;

 	stm32mp_init_auth(&stm32mp1_auth_ops);

 	stm32mp1_arch_security_setup();

 	print_reset_reason();

 	stm32mp_io_setup();
 }

 #if defined(AARCH32_SP_OPTEE)
 /*******************************************************************************
  * This function can be used by the platforms to update/use image
  * information for given `image_id`.
  ******************************************************************************/
 int bl2_plat_handle_post_image_load(unsigned int image_id)
 {
 	int err = 0;
 	bl_mem_params_node_t *bl_mem_params = get_bl_mem_params_node(image_id);
 	bl_mem_params_node_t *bl32_mem_params;
 	bl_mem_params_node_t *pager_mem_params;
 	bl_mem_params_node_t *paged_mem_params;

 	assert(bl_mem_params != NULL);

 	switch (image_id) {
 	case BL32_IMAGE_ID:
 		bl_mem_params->ep_info.pc =
 					bl_mem_params->image_info.image_base;

 		pager_mem_params = get_bl_mem_params_node(BL32_EXTRA1_IMAGE_ID);
 		assert(pager_mem_params != NULL);
 		pager_mem_params->image_info.image_base = STM32MP_OPTEE_BASE;
 		pager_mem_params->image_info.image_max_size =
 			STM32MP_OPTEE_SIZE;

 		paged_mem_params = get_bl_mem_params_node(BL32_EXTRA2_IMAGE_ID);
 		assert(paged_mem_params != NULL);
 		paged_mem_params->image_info.image_base = STM32MP_DDR_BASE +
 			(dt_get_ddr_size() - STM32MP_DDR_S_SIZE -
 			 STM32MP_DDR_SHMEM_SIZE);
 		paged_mem_params->image_info.image_max_size =
 			STM32MP_DDR_S_SIZE;

 		err = parse_optee_header(&bl_mem_params->ep_info,
 					 &pager_mem_params->image_info,
 					 &paged_mem_params->image_info);
 		if (err) {
 			ERROR("OPTEE header parse error.\n");
 			panic();
 		}

 		/* Set optee boot info from parsed header data */
 		bl_mem_params->ep_info.pc =
 				pager_mem_params->image_info.image_base;
 		bl_mem_params->ep_info.args.arg0 =
 				paged_mem_params->image_info.image_base;
 		bl_mem_params->ep_info.args.arg1 = 0; /* Unused */
 		bl_mem_params->ep_info.args.arg2 = 0; /* No DT supported */
 		break;

 	case BL33_IMAGE_ID:
 		bl32_mem_params = get_bl_mem_params_node(BL32_IMAGE_ID);
 		assert(bl32_mem_params != NULL);
 		bl32_mem_params->ep_info.lr_svc = bl_mem_params->ep_info.pc;
 		break;

 	default:
 		/* Do nothing in default case */
 		break;
 	}

 	return err;
 }
 #endif
	/*
	* Copyright (c) 2015-2019, ARM Limited and Contributors. All rights reserved.
	*
	* SPDX-License-Identifier: BSD-3-Clause
	*/

	#include <assert.h>
	#include <string.h>

	#include <platform_def.h>

	#include <arch_helpers.h>
	#include <common/bl_common.h>
	#include <common/debug.h>
	#include <common/desc_image_load.h>
	#include <drivers/delay_timer.h>
	#include <drivers/generic_delay_timer.h>
	#include <drivers/st/bsec.h>
	#include <drivers/st/stm32_console.h>
	#include <drivers/st/stm32_iwdg.h>
	#include <drivers/st/stm32mp_pmic.h>
	#include <drivers/st/stm32mp_reset.h>
	#include <drivers/st/stm32mp1_clk.h>
	#include <drivers/st/stm32mp1_pwr.h>
	#include <drivers/st/stm32mp1_ram.h>
	#include <lib/mmio.h>
	#include <lib/optee_utils.h>
	#include <lib/xlat_tables/xlat_tables_v2.h>
	#include <plat/common/platform.h>

	#include <stm32mp1_context.h>
	#include <stm32mp1_dbgmcu.h>

	static struct console_stm32 console;
	static struct stm32mp_auth_ops stm32mp1_auth_ops;

	static void print_reset_reason(void)
	{
	uint32_t rstsr = mmio_read_32(stm32mp_rcc_base() + RCC_MP_RSTSCLRR);

	if (rstsr == 0U) {
	WARN("Reset reason unknown\n");
	return;
	}

	INFO("Reset reason (0x%x):\n", rstsr);

	if ((rstsr & RCC_MP_RSTSCLRR_PADRSTF) == 0U) {
	if ((rstsr & RCC_MP_RSTSCLRR_STDBYRSTF) != 0U) {
	INFO("System exits from STANDBY\n");
	return;
	}

	if ((rstsr & RCC_MP_RSTSCLRR_CSTDBYRSTF) != 0U) {
	INFO("MPU exits from CSTANDBY\n");
	return;
	}
	}

	if ((rstsr & RCC_MP_RSTSCLRR_PORRSTF) != 0U) {
	INFO(" Power-on Reset (rst_por)\n");
	return;
	}

	if ((rstsr & RCC_MP_RSTSCLRR_BORRSTF) != 0U) {
	INFO(" Brownout Reset (rst_bor)\n");
	return;
	}

	if ((rstsr & RCC_MP_RSTSCLRR_MCSYSRSTF) != 0U) {
	if ((rstsr & RCC_MP_RSTSCLRR_PADRSTF) != 0U) {
	INFO(" System reset generated by MCU (MCSYSRST)\n");
	} else {
	INFO(" Local reset generated by MCU (MCSYSRST)\n");
	}
	return;
	}

	if ((rstsr & RCC_MP_RSTSCLRR_MPSYSRSTF) != 0U) {
	INFO(" System reset generated by MPU (MPSYSRST)\n");
	return;
	}

	if ((rstsr & RCC_MP_RSTSCLRR_HCSSRSTF) != 0U) {
	INFO(" Reset due to a clock failure on HSE\n");
	return;
	}

	if ((rstsr & RCC_MP_RSTSCLRR_IWDG1RSTF) != 0U) {
	INFO(" IWDG1 Reset (rst_iwdg1)\n");
	return;
	}

	if ((rstsr & RCC_MP_RSTSCLRR_IWDG2RSTF) != 0U) {
	INFO(" IWDG2 Reset (rst_iwdg2)\n");
	return;
	}

	if ((rstsr & RCC_MP_RSTSCLRR_MPUP0RSTF) != 0U) {
	INFO(" MPU Processor 0 Reset\n");
	return;
	}

	if ((rstsr & RCC_MP_RSTSCLRR_MPUP1RSTF) != 0U) {
	INFO(" MPU Processor 1 Reset\n");
	return;
	}

	if ((rstsr & RCC_MP_RSTSCLRR_PADRSTF) != 0U) {
	INFO(" Pad Reset from NRST\n");
	return;
	}

	if ((rstsr & RCC_MP_RSTSCLRR_VCORERSTF) != 0U) {
	INFO(" Reset due to a failure of VDD_CORE\n");
	return;
	}

	ERROR(" Unidentified reset reason\n");
	}

	void bl2_el3_early_platform_setup(u_register_t arg0,
	u_register_t arg1 __unused,
	u_register_t arg2 __unused,
	u_register_t arg3 __unused)
	{
	stm32mp_save_boot_ctx_address(arg0);
	}

	void bl2_platform_setup(void)
	{
	int ret;

	if (dt_pmic_status() > 0) {
	initialize_pmic();
	}

	ret = stm32mp1_ddr_probe();
	if (ret < 0) {
	ERROR("Invalid DDR init: error %d\n", ret);
	panic();
	}

	#ifdef AARCH32_SP_OPTEE
	INFO("BL2 runs OP-TEE setup\n");
	/* Initialize tzc400 after DDR initialization */
	stm32mp1_security_setup();
	#else
	INFO("BL2 runs SP_MIN setup\n");
	#endif
	}

	void bl2_el3_plat_arch_setup(void)
	{
	int32_t result;
	struct dt_node_info dt_uart_info;
	const char *board_model;
	boot_api_context_t *boot_context =
	(boot_api_context_t *)stm32mp_get_boot_ctx_address();
	uint32_t clk_rate;
	uintptr_t pwr_base;
	uintptr_t rcc_base;

	mmap_add_region(BL_CODE_BASE, BL_CODE_BASE,
	BL_CODE_END - BL_CODE_BASE,
	MT_CODE \| MT_SECURE);

	#ifdef AARCH32_SP_OPTEE
	/* OP-TEE image needs post load processing: keep RAM read/write */
	mmap_add_region(STM32MP_DDR_BASE + dt_get_ddr_size() -
	STM32MP_DDR_S_SIZE - STM32MP_DDR_SHMEM_SIZE,
	STM32MP_DDR_BASE + dt_get_ddr_size() -
	STM32MP_DDR_S_SIZE - STM32MP_DDR_SHMEM_SIZE,
	STM32MP_DDR_S_SIZE,
	MT_MEMORY \| MT_RW \| MT_SECURE);

	mmap_add_region(STM32MP_OPTEE_BASE, STM32MP_OPTEE_BASE,
	STM32MP_OPTEE_SIZE,
	MT_MEMORY \| MT_RW \| MT_SECURE);
	#else
	/* Prevent corruption of preloaded BL32 */
	mmap_add_region(BL32_BASE, BL32_BASE,
	BL32_LIMIT - BL32_BASE,
	MT_MEMORY \| MT_RO \| MT_SECURE);

	#endif
	/* Map non secure DDR for BL33 load and DDR training area restore */
	mmap_add_region(STM32MP_DDR_BASE,
	STM32MP_DDR_BASE,
	STM32MP_DDR_MAX_SIZE,
	MT_MEMORY \| MT_RW \| MT_NS);

	/* Prevent corruption of preloaded Device Tree */
	mmap_add_region(DTB_BASE, DTB_BASE,
	DTB_LIMIT - DTB_BASE,
	MT_MEMORY \| MT_RO \| MT_SECURE);

	configure_mmu();

	if (dt_open_and_check() < 0) {
	panic();
	}

	pwr_base = stm32mp_pwr_base();
	rcc_base = stm32mp_rcc_base();

	/*
	* Disable the backup domain write protection.
	* The protection is enable at each reset by hardware
	* and must be disabled by software.
	*/
	mmio_setbits_32(pwr_base + PWR_CR1, PWR_CR1_DBP);

	while ((mmio_read_32(pwr_base + PWR_CR1) & PWR_CR1_DBP) == 0U) {
	;
	}

	if (bsec_probe() != 0) {
	panic();
	}

	/* Reset backup domain on cold boot cases */
	if ((mmio_read_32(rcc_base + RCC_BDCR) & RCC_BDCR_RTCSRC_MASK) == 0U) {
	mmio_setbits_32(rcc_base + RCC_BDCR, RCC_BDCR_VSWRST);

	while ((mmio_read_32(rcc_base + RCC_BDCR) & RCC_BDCR_VSWRST) ==
	0U) {
	;
	}

	mmio_clrbits_32(rcc_base + RCC_BDCR, RCC_BDCR_VSWRST);
	}

	/* Disable MCKPROT */
	mmio_clrbits_32(rcc_base + RCC_TZCR, RCC_TZCR_MCKPROT);

	generic_delay_timer_init();

	if (stm32mp1_clk_probe() < 0) {
	panic();
	}

	if (stm32mp1_clk_init() < 0) {
	panic();
	}

	stm32mp1_syscfg_init();

	result = dt_get_stdout_uart_info(&dt_uart_info);

	if ((result <= 0) \|\|
	(dt_uart_info.status == 0U) \|\|
	(dt_uart_info.clock < 0) \|\|
	(dt_uart_info.reset < 0)) {
	goto skip_console_init;
	}

	if (dt_set_stdout_pinctrl() != 0) {
	goto skip_console_init;
	}

	stm32mp_clk_enable((unsigned long)dt_uart_info.clock);

	stm32mp_reset_assert((uint32_t)dt_uart_info.reset);
	udelay(2);
	stm32mp_reset_deassert((uint32_t)dt_uart_info.reset);
	mdelay(1);

	clk_rate = stm32mp_clk_get_rate((unsigned long)dt_uart_info.clock);

	if (console_stm32_register(dt_uart_info.base, clk_rate,
	STM32MP_UART_BAUDRATE, &console) == 0) {
	panic();
	}

	console_set_scope(&console.console, CONSOLE_FLAG_BOOT \|
	CONSOLE_FLAG_CRASH \| CONSOLE_FLAG_TRANSLATE_CRLF);

	stm32mp_print_cpuinfo();

	board_model = dt_get_board_model();
	if (board_model != NULL) {
	NOTICE("Model: %s\n", board_model);
	}

	stm32mp_print_boardinfo();

	if (boot_context->auth_status != BOOT_API_CTX_AUTH_NO) {
	NOTICE("Bootrom authentication %s\n",
	(boot_context->auth_status == BOOT_API_CTX_AUTH_FAILED) ?
	"failed" : "succeeded");
	}

	skip_console_init:
	if (stm32_iwdg_init() < 0) {
	panic();
	}

	stm32_iwdg_refresh();

	result = stm32mp1_dbgmcu_freeze_iwdg2();
	if (result != 0) {
	INFO("IWDG2 freeze error : %i\n", result);
	}

	if (stm32_save_boot_interface(boot_context->boot_interface_selected,
	boot_context->boot_interface_instance) !=
	0) {
	ERROR("Cannot save boot interface\n");
	}

	stm32mp1_auth_ops.check_key = boot_context->bootrom_ecdsa_check_key;
	stm32mp1_auth_ops.verify_signature =
	boot_context->bootrom_ecdsa_verify_signature;

	stm32mp_init_auth(&stm32mp1_auth_ops);

	stm32mp1_arch_security_setup();

	print_reset_reason();

	stm32mp_io_setup();
	}

	#if defined(AARCH32_SP_OPTEE)
	/*******************************************************************************
	* This function can be used by the platforms to update/use image
	* information for given `image_id`.
	******************************************************************************/
	int bl2_plat_handle_post_image_load(unsigned int image_id)
	{
	int err = 0;
	bl_mem_params_node_t *bl_mem_params = get_bl_mem_params_node(image_id);
	bl_mem_params_node_t *bl32_mem_params;
	bl_mem_params_node_t *pager_mem_params;
	bl_mem_params_node_t *paged_mem_params;

	assert(bl_mem_params != NULL);

	switch (image_id) {
	case BL32_IMAGE_ID:
	bl_mem_params->ep_info.pc =
	bl_mem_params->image_info.image_base;

	pager_mem_params = get_bl_mem_params_node(BL32_EXTRA1_IMAGE_ID);
	assert(pager_mem_params != NULL);
	pager_mem_params->image_info.image_base = STM32MP_OPTEE_BASE;
	pager_mem_params->image_info.image_max_size =
	STM32MP_OPTEE_SIZE;

	paged_mem_params = get_bl_mem_params_node(BL32_EXTRA2_IMAGE_ID);
	assert(paged_mem_params != NULL);
	paged_mem_params->image_info.image_base = STM32MP_DDR_BASE +
	(dt_get_ddr_size() - STM32MP_DDR_S_SIZE -
	STM32MP_DDR_SHMEM_SIZE);
	paged_mem_params->image_info.image_max_size =
	STM32MP_DDR_S_SIZE;

	err = parse_optee_header(&bl_mem_params->ep_info,
	&pager_mem_params->image_info,
	&paged_mem_params->image_info);
	if (err) {
	ERROR("OPTEE header parse error.\n");
	panic();
	}

	/* Set optee boot info from parsed header data */
	bl_mem_params->ep_info.pc =
	pager_mem_params->image_info.image_base;
	bl_mem_params->ep_info.args.arg0 =
	paged_mem_params->image_info.image_base;
	bl_mem_params->ep_info.args.arg1 = 0; /* Unused */
	bl_mem_params->ep_info.args.arg2 = 0; /* No DT supported */
	break;

	case BL33_IMAGE_ID:
	bl32_mem_params = get_bl_mem_params_node(BL32_IMAGE_ID);
	assert(bl32_mem_params != NULL);
	bl32_mem_params->ep_info.lr_svc = bl_mem_params->ep_info.pc;
	break;

	default:
	/* Do nothing in default case */
	break;
	}

	return err;
	}
	#endif