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https://github.com/ARM-software/arm-trusted-firmware.git
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a416325bc1
When Trusted Boot is enabled, images are loaded and authenticated following up the root of trust. This means that between the initial console message saying that an image is being loaded, and the final one where it says that it failed to load it, BL2 may print several messages about other images on the chain of trust being loaded, thus it is not always clear which image we failed loading at the end of the day. Change-Id: I3b189ec9d12c2a6203d16c8dbbb4fc117639c3c1 Signed-off-by: Sandrine Bailleux <sandrine.bailleux@arm.com>
109 lines
3.2 KiB
C
109 lines
3.2 KiB
C
/*
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* Copyright (c) 2016-2018, 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);
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assert(bl2_load_info->head);
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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) {
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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 & IMAGE_ATTRIB_PLAT_SETUP) {
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if (plat_setup_done) {
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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) {
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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 & IMAGE_ATTRIB_SKIP_LOADING)) {
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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) {
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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) {
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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);
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assert(bl2_to_next_bl_params->head);
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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);
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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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