plat/arm/common/arm_bl2_setup.c - filogic/atf - Gitiles

 /*
  * Copyright (c) 2015-2017, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */

 #include <arch_helpers.h>
 #include <arm_def.h>
 #include <assert.h>
 #include <bl_common.h>
 #include <console.h>
 #include <debug.h>
 #include <desc_image_load.h>
 #include <plat_arm.h>
 #include <platform_def.h>
 #include <string.h>
 #include <utils.h>

 /* Data structure which holds the extents of the trusted SRAM for BL2 */
 static meminfo_t bl2_tzram_layout __aligned(CACHE_WRITEBACK_GRANULE);

 /* Weak definitions may be overridden in specific ARM standard platform */
 #pragma weak bl2_early_platform_setup
 #pragma weak bl2_platform_setup
 #pragma weak bl2_plat_arch_setup
 #pragma weak bl2_plat_sec_mem_layout

 #if LOAD_IMAGE_V2

 #pragma weak bl2_plat_handle_post_image_load

 #else /* LOAD_IMAGE_V2 */

 /*******************************************************************************
  * This structure represents the superset of information that is passed to
  * BL31, e.g. while passing control to it from BL2, bl31_params
  * and other platform specific params
  ******************************************************************************/
 typedef struct bl2_to_bl31_params_mem {
 	bl31_params_t bl31_params;
 	image_info_t bl31_image_info;
 	image_info_t bl32_image_info;
 	image_info_t bl33_image_info;
 	entry_point_info_t bl33_ep_info;
 	entry_point_info_t bl32_ep_info;
 	entry_point_info_t bl31_ep_info;
 } bl2_to_bl31_params_mem_t;


 static bl2_to_bl31_params_mem_t bl31_params_mem;


 /* Weak definitions may be overridden in specific ARM standard platform */
 #pragma weak bl2_plat_get_bl31_params
 #pragma weak bl2_plat_get_bl31_ep_info
 #pragma weak bl2_plat_flush_bl31_params
 #pragma weak bl2_plat_set_bl31_ep_info
 #pragma weak bl2_plat_get_scp_bl2_meminfo
 #pragma weak bl2_plat_get_bl32_meminfo
 #pragma weak bl2_plat_set_bl32_ep_info
 #pragma weak bl2_plat_get_bl33_meminfo
 #pragma weak bl2_plat_set_bl33_ep_info

 #if ARM_BL31_IN_DRAM
 meminfo_t *bl2_plat_sec_mem_layout(void)
 {
 	static meminfo_t bl2_dram_layout
 		__aligned(CACHE_WRITEBACK_GRANULE) = {
 		.total_base = BL31_BASE,
 		.total_size = (ARM_AP_TZC_DRAM1_BASE +
 				ARM_AP_TZC_DRAM1_SIZE) - BL31_BASE,
 		.free_base = BL31_BASE,
 		.free_size = (ARM_AP_TZC_DRAM1_BASE +
 				ARM_AP_TZC_DRAM1_SIZE) - BL31_BASE
 	};

 	return &bl2_dram_layout;
 }
 #else
 meminfo_t *bl2_plat_sec_mem_layout(void)
 {
 	return &bl2_tzram_layout;
 }
 #endif /* ARM_BL31_IN_DRAM */

 /*******************************************************************************
  * This function assigns a pointer to the memory that the platform has kept
  * aside to pass platform specific and trusted firmware related information
  * to BL31. This memory is allocated by allocating memory to
  * bl2_to_bl31_params_mem_t structure which is a superset of all the
  * structure whose information is passed to BL31
  * NOTE: This function should be called only once and should be done
  * before generating params to BL31
  ******************************************************************************/
 bl31_params_t *bl2_plat_get_bl31_params(void)
 {
 	bl31_params_t *bl2_to_bl31_params;

 	/*
 	 * Initialise the memory for all the arguments that needs to
 	 * be passed to BL31
 	 */
 	zeromem(&bl31_params_mem, sizeof(bl2_to_bl31_params_mem_t));

 	/* Assign memory for TF related information */
 	bl2_to_bl31_params = &bl31_params_mem.bl31_params;
 	SET_PARAM_HEAD(bl2_to_bl31_params, PARAM_BL31, VERSION_1, 0);

 	/* Fill BL31 related information */
 	bl2_to_bl31_params->bl31_image_info = &bl31_params_mem.bl31_image_info;
 	SET_PARAM_HEAD(bl2_to_bl31_params->bl31_image_info, PARAM_IMAGE_BINARY,
 		VERSION_1, 0);

 	/* Fill BL32 related information if it exists */
 #ifdef BL32_BASE
 	bl2_to_bl31_params->bl32_ep_info = &bl31_params_mem.bl32_ep_info;
 	SET_PARAM_HEAD(bl2_to_bl31_params->bl32_ep_info, PARAM_EP,
 		VERSION_1, 0);
 	bl2_to_bl31_params->bl32_image_info = &bl31_params_mem.bl32_image_info;
 	SET_PARAM_HEAD(bl2_to_bl31_params->bl32_image_info, PARAM_IMAGE_BINARY,
 		VERSION_1, 0);
 #endif /* BL32_BASE */

 	/* Fill BL33 related information */
 	bl2_to_bl31_params->bl33_ep_info = &bl31_params_mem.bl33_ep_info;
 	SET_PARAM_HEAD(bl2_to_bl31_params->bl33_ep_info,
 		PARAM_EP, VERSION_1, 0);

 	/* BL33 expects to receive the primary CPU MPID (through x0) */
 	bl2_to_bl31_params->bl33_ep_info->args.arg0 = 0xffff & read_mpidr();

 	bl2_to_bl31_params->bl33_image_info = &bl31_params_mem.bl33_image_info;
 	SET_PARAM_HEAD(bl2_to_bl31_params->bl33_image_info, PARAM_IMAGE_BINARY,
 		VERSION_1, 0);

 	return bl2_to_bl31_params;
 }

 /* Flush the TF params and the TF plat params */
 void bl2_plat_flush_bl31_params(void)
 {
 	flush_dcache_range((unsigned long)&bl31_params_mem,
 			sizeof(bl2_to_bl31_params_mem_t));
 }

 /*******************************************************************************
  * This function returns a pointer to the shared memory that the platform
  * has kept to point to entry point information of BL31 to BL2
  ******************************************************************************/
 struct entry_point_info *bl2_plat_get_bl31_ep_info(void)
 {
 #if DEBUG
 	bl31_params_mem.bl31_ep_info.args.arg1 = ARM_BL31_PLAT_PARAM_VAL;
 #endif

 	return &bl31_params_mem.bl31_ep_info;
 }
 #endif /* LOAD_IMAGE_V2 */

 /*******************************************************************************
  * BL1 has passed the extents of the trusted SRAM that should be visible to BL2
  * in x0. This memory layout is sitting at the base of the free trusted SRAM.
  * Copy it to a safe location before its reclaimed by later BL2 functionality.
  ******************************************************************************/
 void arm_bl2_early_platform_setup(meminfo_t *mem_layout)
 {
 	/* Initialize the console to provide early debug support */
 	console_init(PLAT_ARM_BOOT_UART_BASE, PLAT_ARM_BOOT_UART_CLK_IN_HZ,
 			ARM_CONSOLE_BAUDRATE);

 	/* Setup the BL2 memory layout */
 	bl2_tzram_layout = *mem_layout;

 	/* Initialise the IO layer and register platform IO devices */
 	plat_arm_io_setup();
 }

 void bl2_early_platform_setup(meminfo_t *mem_layout)
 {
 	arm_bl2_early_platform_setup(mem_layout);
 }

 /*
  * Perform ARM standard platform setup.
  */
 void arm_bl2_platform_setup(void)
 {
 	/* Initialize the secure environment */
 	plat_arm_security_setup();
 }

 void bl2_platform_setup(void)
 {
 	arm_bl2_platform_setup();
 }

 /*******************************************************************************
  * Perform the very early platform specific architectural setup here. At the
  * moment this is only initializes the mmu in a quick and dirty way.
  ******************************************************************************/
 void arm_bl2_plat_arch_setup(void)
 {
 	arm_setup_page_tables(bl2_tzram_layout.total_base,
 			      bl2_tzram_layout.total_size,
 			      BL_CODE_BASE,
 			      BL_CODE_END,
 			      BL_RO_DATA_BASE,
 			      BL_RO_DATA_END
 #if USE_COHERENT_MEM
 			      , BL_COHERENT_RAM_BASE,
 			      BL_COHERENT_RAM_END
 #endif
 			      );

 #ifdef AARCH32
 	enable_mmu_secure(0);
 #else
 	enable_mmu_el1(0);
 #endif
 }

 void bl2_plat_arch_setup(void)
 {
 	arm_bl2_plat_arch_setup();
 }

 #if LOAD_IMAGE_V2
 int arm_bl2_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);
 	assert(bl_mem_params);

 	switch (image_id) {
 #ifdef AARCH64
 	case BL32_IMAGE_ID:
 		bl_mem_params->ep_info.spsr = arm_get_spsr_for_bl32_entry();
 		break;
 #endif

 	case BL33_IMAGE_ID:
 		/* BL33 expects to receive the primary CPU MPID (through r0) */
 		bl_mem_params->ep_info.args.arg0 = 0xffff & read_mpidr();
 		bl_mem_params->ep_info.spsr = arm_get_spsr_for_bl33_entry();
 		break;

 #ifdef SCP_BL2_BASE
 	case SCP_BL2_IMAGE_ID:
 		/* The subsequent handling of SCP_BL2 is platform specific */
 		err = plat_arm_bl2_handle_scp_bl2(&bl_mem_params->image_info);
 		if (err) {
 			WARN("Failure in platform-specific handling of SCP_BL2 image.\n");
 		}
 		break;
 #endif
 	}

 	return err;
 }

 /*******************************************************************************
  * 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)
 {
 	return arm_bl2_handle_post_image_load(image_id);
 }

 #else /* LOAD_IMAGE_V2 */

 /*******************************************************************************
  * Populate the extents of memory available for loading SCP_BL2 (if used),
  * i.e. anywhere in trusted RAM as long as it doesn't overwrite BL2.
  ******************************************************************************/
 void bl2_plat_get_scp_bl2_meminfo(meminfo_t *scp_bl2_meminfo)
 {
 	*scp_bl2_meminfo = bl2_tzram_layout;
 }

 /*******************************************************************************
  * Before calling this function BL31 is loaded in memory and its entrypoint
  * is set by load_image. This is a placeholder for the platform to change
  * the entrypoint of BL31 and set SPSR and security state.
  * On ARM standard platforms we only set the security state of the entrypoint
  ******************************************************************************/
 void bl2_plat_set_bl31_ep_info(image_info_t *bl31_image_info,
 					entry_point_info_t *bl31_ep_info)
 {
 	SET_SECURITY_STATE(bl31_ep_info->h.attr, SECURE);
 	bl31_ep_info->spsr = SPSR_64(MODE_EL3, MODE_SP_ELX,
 					DISABLE_ALL_EXCEPTIONS);
 }


 /*******************************************************************************
  * Before calling this function BL32 is loaded in memory and its entrypoint
  * is set by load_image. This is a placeholder for the platform to change
  * the entrypoint of BL32 and set SPSR and security state.
  * On ARM standard platforms we only set the security state of the entrypoint
  ******************************************************************************/
 #ifdef BL32_BASE
 void bl2_plat_set_bl32_ep_info(image_info_t *bl32_image_info,
 					entry_point_info_t *bl32_ep_info)
 {
 	SET_SECURITY_STATE(bl32_ep_info->h.attr, SECURE);
 	bl32_ep_info->spsr = arm_get_spsr_for_bl32_entry();
 }

 /*******************************************************************************
  * Populate the extents of memory available for loading BL32
  ******************************************************************************/
 void bl2_plat_get_bl32_meminfo(meminfo_t *bl32_meminfo)
 {
 	/*
 	 * Populate the extents of memory available for loading BL32.
 	 */
 	bl32_meminfo->total_base = BL32_BASE;
 	bl32_meminfo->free_base = BL32_BASE;
 	bl32_meminfo->total_size =
 			(TSP_SEC_MEM_BASE + TSP_SEC_MEM_SIZE) - BL32_BASE;
 	bl32_meminfo->free_size =
 			(TSP_SEC_MEM_BASE + TSP_SEC_MEM_SIZE) - BL32_BASE;
 }
 #endif /* BL32_BASE */

 /*******************************************************************************
  * Before calling this function BL33 is loaded in memory and its entrypoint
  * is set by load_image. This is a placeholder for the platform to change
  * the entrypoint of BL33 and set SPSR and security state.
  * On ARM standard platforms we only set the security state of the entrypoint
  ******************************************************************************/
 void bl2_plat_set_bl33_ep_info(image_info_t *image,
 					entry_point_info_t *bl33_ep_info)
 {
 	SET_SECURITY_STATE(bl33_ep_info->h.attr, NON_SECURE);
 	bl33_ep_info->spsr = arm_get_spsr_for_bl33_entry();
 }

 /*******************************************************************************
  * Populate the extents of memory available for loading BL33
  ******************************************************************************/
 void bl2_plat_get_bl33_meminfo(meminfo_t *bl33_meminfo)
 {
 	bl33_meminfo->total_base = ARM_NS_DRAM1_BASE;
 	bl33_meminfo->total_size = ARM_NS_DRAM1_SIZE;
 	bl33_meminfo->free_base = ARM_NS_DRAM1_BASE;
 	bl33_meminfo->free_size = ARM_NS_DRAM1_SIZE;
 }

 #endif /* LOAD_IMAGE_V2 */
	/*
	* Copyright (c) 2015-2017, ARM Limited and Contributors. All rights reserved.
	*
	* SPDX-License-Identifier: BSD-3-Clause
	*/

	#include <arch_helpers.h>
	#include <arm_def.h>
	#include <assert.h>
	#include <bl_common.h>
	#include <console.h>
	#include <debug.h>
	#include <desc_image_load.h>
	#include <plat_arm.h>
	#include <platform_def.h>
	#include <string.h>
	#include <utils.h>

	/* Data structure which holds the extents of the trusted SRAM for BL2 */
	static meminfo_t bl2_tzram_layout __aligned(CACHE_WRITEBACK_GRANULE);

	/* Weak definitions may be overridden in specific ARM standard platform */
	#pragma weak bl2_early_platform_setup
	#pragma weak bl2_platform_setup
	#pragma weak bl2_plat_arch_setup
	#pragma weak bl2_plat_sec_mem_layout

	#if LOAD_IMAGE_V2

	#pragma weak bl2_plat_handle_post_image_load

	#else /* LOAD_IMAGE_V2 */

	/*******************************************************************************
	* This structure represents the superset of information that is passed to
	* BL31, e.g. while passing control to it from BL2, bl31_params
	* and other platform specific params
	******************************************************************************/
	typedef struct bl2_to_bl31_params_mem {
	bl31_params_t bl31_params;
	image_info_t bl31_image_info;
	image_info_t bl32_image_info;
	image_info_t bl33_image_info;
	entry_point_info_t bl33_ep_info;
	entry_point_info_t bl32_ep_info;
	entry_point_info_t bl31_ep_info;
	} bl2_to_bl31_params_mem_t;


	static bl2_to_bl31_params_mem_t bl31_params_mem;


	/* Weak definitions may be overridden in specific ARM standard platform */
	#pragma weak bl2_plat_get_bl31_params
	#pragma weak bl2_plat_get_bl31_ep_info
	#pragma weak bl2_plat_flush_bl31_params
	#pragma weak bl2_plat_set_bl31_ep_info
	#pragma weak bl2_plat_get_scp_bl2_meminfo
	#pragma weak bl2_plat_get_bl32_meminfo
	#pragma weak bl2_plat_set_bl32_ep_info
	#pragma weak bl2_plat_get_bl33_meminfo
	#pragma weak bl2_plat_set_bl33_ep_info

	#if ARM_BL31_IN_DRAM
	meminfo_t *bl2_plat_sec_mem_layout(void)
	{
	static meminfo_t bl2_dram_layout
	__aligned(CACHE_WRITEBACK_GRANULE) = {
	.total_base = BL31_BASE,
	.total_size = (ARM_AP_TZC_DRAM1_BASE +
	ARM_AP_TZC_DRAM1_SIZE) - BL31_BASE,
	.free_base = BL31_BASE,
	.free_size = (ARM_AP_TZC_DRAM1_BASE +
	ARM_AP_TZC_DRAM1_SIZE) - BL31_BASE
	};

	return &bl2_dram_layout;
	}
	#else
	meminfo_t *bl2_plat_sec_mem_layout(void)
	{
	return &bl2_tzram_layout;
	}
	#endif /* ARM_BL31_IN_DRAM */

	/*******************************************************************************
	* This function assigns a pointer to the memory that the platform has kept
	* aside to pass platform specific and trusted firmware related information
	* to BL31. This memory is allocated by allocating memory to
	* bl2_to_bl31_params_mem_t structure which is a superset of all the
	* structure whose information is passed to BL31
	* NOTE: This function should be called only once and should be done
	* before generating params to BL31
	******************************************************************************/
	bl31_params_t *bl2_plat_get_bl31_params(void)
	{
	bl31_params_t *bl2_to_bl31_params;

	/*
	* Initialise the memory for all the arguments that needs to
	* be passed to BL31
	*/
	zeromem(&bl31_params_mem, sizeof(bl2_to_bl31_params_mem_t));

	/* Assign memory for TF related information */
	bl2_to_bl31_params = &bl31_params_mem.bl31_params;
	SET_PARAM_HEAD(bl2_to_bl31_params, PARAM_BL31, VERSION_1, 0);

	/* Fill BL31 related information */
	bl2_to_bl31_params->bl31_image_info = &bl31_params_mem.bl31_image_info;
	SET_PARAM_HEAD(bl2_to_bl31_params->bl31_image_info, PARAM_IMAGE_BINARY,
	VERSION_1, 0);

	/* Fill BL32 related information if it exists */
	#ifdef BL32_BASE
	bl2_to_bl31_params->bl32_ep_info = &bl31_params_mem.bl32_ep_info;
	SET_PARAM_HEAD(bl2_to_bl31_params->bl32_ep_info, PARAM_EP,
	VERSION_1, 0);
	bl2_to_bl31_params->bl32_image_info = &bl31_params_mem.bl32_image_info;
	SET_PARAM_HEAD(bl2_to_bl31_params->bl32_image_info, PARAM_IMAGE_BINARY,
	VERSION_1, 0);
	#endif /* BL32_BASE */

	/* Fill BL33 related information */
	bl2_to_bl31_params->bl33_ep_info = &bl31_params_mem.bl33_ep_info;
	SET_PARAM_HEAD(bl2_to_bl31_params->bl33_ep_info,
	PARAM_EP, VERSION_1, 0);

	/* BL33 expects to receive the primary CPU MPID (through x0) */
	bl2_to_bl31_params->bl33_ep_info->args.arg0 = 0xffff & read_mpidr();

	bl2_to_bl31_params->bl33_image_info = &bl31_params_mem.bl33_image_info;
	SET_PARAM_HEAD(bl2_to_bl31_params->bl33_image_info, PARAM_IMAGE_BINARY,
	VERSION_1, 0);

	return bl2_to_bl31_params;
	}

	/* Flush the TF params and the TF plat params */
	void bl2_plat_flush_bl31_params(void)
	{
	flush_dcache_range((unsigned long)&bl31_params_mem,
	sizeof(bl2_to_bl31_params_mem_t));
	}

	/*******************************************************************************
	* This function returns a pointer to the shared memory that the platform
	* has kept to point to entry point information of BL31 to BL2
	******************************************************************************/
	struct entry_point_info *bl2_plat_get_bl31_ep_info(void)
	{
	#if DEBUG
	bl31_params_mem.bl31_ep_info.args.arg1 = ARM_BL31_PLAT_PARAM_VAL;
	#endif

	return &bl31_params_mem.bl31_ep_info;
	}
	#endif /* LOAD_IMAGE_V2 */

	/*******************************************************************************
	* BL1 has passed the extents of the trusted SRAM that should be visible to BL2
	* in x0. This memory layout is sitting at the base of the free trusted SRAM.
	* Copy it to a safe location before its reclaimed by later BL2 functionality.
	******************************************************************************/
	void arm_bl2_early_platform_setup(meminfo_t *mem_layout)
	{
	/* Initialize the console to provide early debug support */
	console_init(PLAT_ARM_BOOT_UART_BASE, PLAT_ARM_BOOT_UART_CLK_IN_HZ,
	ARM_CONSOLE_BAUDRATE);

	/* Setup the BL2 memory layout */
	bl2_tzram_layout = *mem_layout;

	/* Initialise the IO layer and register platform IO devices */
	plat_arm_io_setup();
	}

	void bl2_early_platform_setup(meminfo_t *mem_layout)
	{
	arm_bl2_early_platform_setup(mem_layout);
	}

	/*
	* Perform ARM standard platform setup.
	*/
	void arm_bl2_platform_setup(void)
	{
	/* Initialize the secure environment */
	plat_arm_security_setup();
	}

	void bl2_platform_setup(void)
	{
	arm_bl2_platform_setup();
	}

	/*******************************************************************************
	* Perform the very early platform specific architectural setup here. At the
	* moment this is only initializes the mmu in a quick and dirty way.
	******************************************************************************/
	void arm_bl2_plat_arch_setup(void)
	{
	arm_setup_page_tables(bl2_tzram_layout.total_base,
	bl2_tzram_layout.total_size,
	BL_CODE_BASE,
	BL_CODE_END,
	BL_RO_DATA_BASE,
	BL_RO_DATA_END
	#if USE_COHERENT_MEM
	, BL_COHERENT_RAM_BASE,
	BL_COHERENT_RAM_END
	#endif
	);

	#ifdef AARCH32
	enable_mmu_secure(0);
	#else
	enable_mmu_el1(0);
	#endif
	}

	void bl2_plat_arch_setup(void)
	{
	arm_bl2_plat_arch_setup();
	}

	#if LOAD_IMAGE_V2
	int arm_bl2_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);
	assert(bl_mem_params);

	switch (image_id) {
	#ifdef AARCH64
	case BL32_IMAGE_ID:
	bl_mem_params->ep_info.spsr = arm_get_spsr_for_bl32_entry();
	break;
	#endif

	case BL33_IMAGE_ID:
	/* BL33 expects to receive the primary CPU MPID (through r0) */
	bl_mem_params->ep_info.args.arg0 = 0xffff & read_mpidr();
	bl_mem_params->ep_info.spsr = arm_get_spsr_for_bl33_entry();
	break;

	#ifdef SCP_BL2_BASE
	case SCP_BL2_IMAGE_ID:
	/* The subsequent handling of SCP_BL2 is platform specific */
	err = plat_arm_bl2_handle_scp_bl2(&bl_mem_params->image_info);
	if (err) {
	WARN("Failure in platform-specific handling of SCP_BL2 image.\n");
	}
	break;
	#endif
	}

	return err;
	}

	/*******************************************************************************
	* 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)
	{
	return arm_bl2_handle_post_image_load(image_id);
	}

	#else /* LOAD_IMAGE_V2 */

	/*******************************************************************************
	* Populate the extents of memory available for loading SCP_BL2 (if used),
	* i.e. anywhere in trusted RAM as long as it doesn't overwrite BL2.
	******************************************************************************/
	void bl2_plat_get_scp_bl2_meminfo(meminfo_t *scp_bl2_meminfo)
	{
	*scp_bl2_meminfo = bl2_tzram_layout;
	}

	/*******************************************************************************
	* Before calling this function BL31 is loaded in memory and its entrypoint
	* is set by load_image. This is a placeholder for the platform to change
	* the entrypoint of BL31 and set SPSR and security state.
	* On ARM standard platforms we only set the security state of the entrypoint
	******************************************************************************/
	void bl2_plat_set_bl31_ep_info(image_info_t *bl31_image_info,
	entry_point_info_t *bl31_ep_info)
	{
	SET_SECURITY_STATE(bl31_ep_info->h.attr, SECURE);
	bl31_ep_info->spsr = SPSR_64(MODE_EL3, MODE_SP_ELX,
	DISABLE_ALL_EXCEPTIONS);
	}


	/*******************************************************************************
	* Before calling this function BL32 is loaded in memory and its entrypoint
	* is set by load_image. This is a placeholder for the platform to change
	* the entrypoint of BL32 and set SPSR and security state.
	* On ARM standard platforms we only set the security state of the entrypoint
	******************************************************************************/
	#ifdef BL32_BASE
	void bl2_plat_set_bl32_ep_info(image_info_t *bl32_image_info,
	entry_point_info_t *bl32_ep_info)
	{
	SET_SECURITY_STATE(bl32_ep_info->h.attr, SECURE);
	bl32_ep_info->spsr = arm_get_spsr_for_bl32_entry();
	}

	/*******************************************************************************
	* Populate the extents of memory available for loading BL32
	******************************************************************************/
	void bl2_plat_get_bl32_meminfo(meminfo_t *bl32_meminfo)
	{
	/*
	* Populate the extents of memory available for loading BL32.
	*/
	bl32_meminfo->total_base = BL32_BASE;
	bl32_meminfo->free_base = BL32_BASE;
	bl32_meminfo->total_size =
	(TSP_SEC_MEM_BASE + TSP_SEC_MEM_SIZE) - BL32_BASE;
	bl32_meminfo->free_size =
	(TSP_SEC_MEM_BASE + TSP_SEC_MEM_SIZE) - BL32_BASE;
	}
	#endif /* BL32_BASE */

	/*******************************************************************************
	* Before calling this function BL33 is loaded in memory and its entrypoint
	* is set by load_image. This is a placeholder for the platform to change
	* the entrypoint of BL33 and set SPSR and security state.
	* On ARM standard platforms we only set the security state of the entrypoint
	******************************************************************************/
	void bl2_plat_set_bl33_ep_info(image_info_t *image,
	entry_point_info_t *bl33_ep_info)
	{
	SET_SECURITY_STATE(bl33_ep_info->h.attr, NON_SECURE);
	bl33_ep_info->spsr = arm_get_spsr_for_bl33_entry();
	}

	/*******************************************************************************
	* Populate the extents of memory available for loading BL33
	******************************************************************************/
	void bl2_plat_get_bl33_meminfo(meminfo_t *bl33_meminfo)
	{
	bl33_meminfo->total_base = ARM_NS_DRAM1_BASE;
	bl33_meminfo->total_size = ARM_NS_DRAM1_SIZE;
	bl33_meminfo->free_base = ARM_NS_DRAM1_BASE;
	bl33_meminfo->free_size = ARM_NS_DRAM1_SIZE;
	}

	#endif /* LOAD_IMAGE_V2 */