142 lines
4.4 KiB
C
142 lines
4.4 KiB
C
/*
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* Copyright (c) 2016-2021, ARM Limited and Contributors. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <assert.h>
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#include <common/bl_common.h>
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#include <common/desc_image_load.h>
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#if defined(SPD_spmd)
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#include <plat/arm/common/fconf_arm_sp_getter.h>
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#endif
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#include <plat/arm/common/plat_arm.h>
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#include <plat/common/platform.h>
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#pragma weak plat_flush_next_bl_params
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#pragma weak plat_get_bl_image_load_info
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#pragma weak plat_get_next_bl_params
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static bl_params_t *next_bl_params_cpy_ptr;
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/*******************************************************************************
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* This function flushes the data structures so that they are visible
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* in memory for the next BL image.
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******************************************************************************/
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void plat_flush_next_bl_params(void)
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{
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assert(next_bl_params_cpy_ptr != NULL);
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flush_bl_params_desc_args(bl_mem_params_desc_ptr,
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bl_mem_params_desc_num,
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next_bl_params_cpy_ptr);
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}
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#if defined(SPD_spmd) && BL2_ENABLE_SP_LOAD
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/*******************************************************************************
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* This function appends Secure Partitions to list of loadable images.
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******************************************************************************/
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static void plat_add_sp_images_load_info(struct bl_load_info *load_info)
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{
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bl_load_info_node_t *curr_node = load_info->head;
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bl_load_info_node_t *prev_node;
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/* Shortcut for empty SP list */
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if (sp_mem_params_descs[0].image_id == 0) {
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ERROR("No Secure Partition Image available\n");
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return;
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}
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/* Traverse through the bl images list */
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do {
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curr_node = curr_node->next_load_info;
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} while (curr_node->next_load_info != NULL);
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prev_node = curr_node;
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for (unsigned int index = 0; index < MAX_SP_IDS; index++) {
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if (sp_mem_params_descs[index].image_id == 0) {
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return;
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}
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curr_node = &sp_mem_params_descs[index].load_node_mem;
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/* Populate the image information */
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curr_node->image_id = sp_mem_params_descs[index].image_id;
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curr_node->image_info = &sp_mem_params_descs[index].image_info;
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prev_node->next_load_info = curr_node;
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prev_node = curr_node;
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}
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INFO("Reached Max number of SPs\n");
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}
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#endif
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/*******************************************************************************
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* This function returns the list of loadable images.
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******************************************************************************/
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struct bl_load_info *plat_get_bl_image_load_info(void)
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{
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#if defined(SPD_spmd) && BL2_ENABLE_SP_LOAD
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bl_load_info_t *bl_load_info;
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bl_load_info = get_bl_load_info_from_mem_params_desc();
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plat_add_sp_images_load_info(bl_load_info);
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return bl_load_info;
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#else
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return get_bl_load_info_from_mem_params_desc();
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#endif
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}
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/*******************************************************************************
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* ARM helper function to return the list of executable images.Since the default
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* descriptors are allocated within BL2 RW memory, this prevents BL31/BL32
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* overlay of BL2 memory. Hence this function also copies the descriptors to a
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* pre-allocated memory indicated by ARM_BL2_MEM_DESC_BASE.
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******************************************************************************/
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struct bl_params *arm_get_next_bl_params(void)
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{
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bl_mem_params_node_t *bl2_mem_params_descs_cpy
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= (bl_mem_params_node_t *)ARM_BL2_MEM_DESC_BASE;
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const bl_params_t *next_bl_params;
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next_bl_params_cpy_ptr =
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(bl_params_t *)(ARM_BL2_MEM_DESC_BASE +
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(bl_mem_params_desc_num * sizeof(bl_mem_params_node_t)));
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/*
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* Copy the memory descriptors to ARM_BL2_MEM_DESC_BASE area.
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*/
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(void) memcpy(bl2_mem_params_descs_cpy, bl_mem_params_desc_ptr,
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(bl_mem_params_desc_num * sizeof(bl_mem_params_node_t)));
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/*
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* Modify the global 'bl_mem_params_desc_ptr' to point to the
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* copied location.
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*/
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bl_mem_params_desc_ptr = bl2_mem_params_descs_cpy;
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next_bl_params = get_next_bl_params_from_mem_params_desc();
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assert(next_bl_params != NULL);
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/*
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* Copy 'next_bl_params' to the reserved location after the copied
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* memory descriptors.
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*/
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(void) memcpy(next_bl_params_cpy_ptr, next_bl_params,
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(sizeof(bl_params_t)));
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populate_next_bl_params_config(next_bl_params_cpy_ptr);
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return next_bl_params_cpy_ptr;
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}
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/*******************************************************************************
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* This function returns the list of executable images
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******************************************************************************/
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struct bl_params *plat_get_next_bl_params(void)
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{
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return arm_get_next_bl_params();
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}
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