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ba68ef557b
There are cases where we need to manipulate image information before the load. For example, for decompressing data, we cannot load the compressed images to their final destination. Instead, we need to load them to the temporary buffer for the decompressor. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
103 lines
3 KiB
C
103 lines
3 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 <arch.h>
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#include <arch_helpers.h>
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#include <assert.h>
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#include <auth_mod.h>
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#include <bl_common.h>
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#include <debug.h>
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#include <desc_image_load.h>
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#include <platform.h>
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#include <platform_def.h>
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#include <stdint.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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entry_point_info_t *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 (%i)\n", 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 */
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bl2_to_next_bl_params->head->ep_info->args.arg0 = (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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