112 lines
3.3 KiB
C
112 lines
3.3 KiB
C
/*
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* Copyright (c) 2016-2020, 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 <stdint.h>
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#include <platform_def.h>
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#include <arch.h>
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#include <arch_helpers.h>
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#include <common/bl_common.h>
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#include <common/debug.h>
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#include <common/desc_image_load.h>
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#include <drivers/auth/auth_mod.h>
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#include <plat/common/platform.h>
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#include "bl2_private.h"
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/*******************************************************************************
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* This function loads SCP_BL2/BL3x images and returns the ep_info for
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* the next executable image.
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******************************************************************************/
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struct entry_point_info *bl2_load_images(void)
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{
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bl_params_t *bl2_to_next_bl_params;
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bl_load_info_t *bl2_load_info;
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const bl_load_info_node_t *bl2_node_info;
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int plat_setup_done = 0;
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int err;
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/*
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* Get information about the images to load.
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*/
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bl2_load_info = plat_get_bl_image_load_info();
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assert(bl2_load_info != NULL);
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assert(bl2_load_info->head != NULL);
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assert(bl2_load_info->h.type == PARAM_BL_LOAD_INFO);
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assert(bl2_load_info->h.version >= VERSION_2);
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bl2_node_info = bl2_load_info->head;
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while (bl2_node_info != NULL) {
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/*
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* Perform platform setup before loading the image,
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* if indicated in the image attributes AND if NOT
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* already done before.
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*/
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if ((bl2_node_info->image_info->h.attr &
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IMAGE_ATTRIB_PLAT_SETUP) != 0U) {
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if (plat_setup_done != 0) {
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WARN("BL2: Platform setup already done!!\n");
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} else {
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INFO("BL2: Doing platform setup\n");
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bl2_platform_setup();
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plat_setup_done = 1;
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}
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}
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err = bl2_plat_handle_pre_image_load(bl2_node_info->image_id);
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if (err != 0) {
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ERROR("BL2: Failure in pre image load handling (%i)\n", err);
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plat_error_handler(err);
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}
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if ((bl2_node_info->image_info->h.attr &
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IMAGE_ATTRIB_SKIP_LOADING) == 0U) {
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INFO("BL2: Loading image id %d\n", bl2_node_info->image_id);
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err = load_auth_image(bl2_node_info->image_id,
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bl2_node_info->image_info);
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if (err != 0) {
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ERROR("BL2: Failed to load image id %d (%i)\n",
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bl2_node_info->image_id, err);
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plat_error_handler(err);
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}
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} else {
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INFO("BL2: Skip loading image id %d\n", bl2_node_info->image_id);
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}
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/* Allow platform to handle image information. */
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err = bl2_plat_handle_post_image_load(bl2_node_info->image_id);
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if (err != 0) {
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ERROR("BL2: Failure in post image load handling (%i)\n", err);
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plat_error_handler(err);
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}
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/* Go to next image */
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bl2_node_info = bl2_node_info->next_load_info;
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}
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/*
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* Get information to pass to the next image.
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*/
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bl2_to_next_bl_params = plat_get_next_bl_params();
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assert(bl2_to_next_bl_params != NULL);
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assert(bl2_to_next_bl_params->head != NULL);
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assert(bl2_to_next_bl_params->h.type == PARAM_BL_PARAMS);
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assert(bl2_to_next_bl_params->h.version >= VERSION_2);
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assert(bl2_to_next_bl_params->head->ep_info != NULL);
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/* Populate arg0 for the next BL image if not already provided */
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if (bl2_to_next_bl_params->head->ep_info->args.arg0 == (u_register_t)0)
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bl2_to_next_bl_params->head->ep_info->args.arg0 =
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(u_register_t)bl2_to_next_bl_params;
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/* Flush the parameters to be passed to next image */
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plat_flush_next_bl_params();
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return bl2_to_next_bl_params->head->ep_info;
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}
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