blob: 48c9beca6c55da56f3d7d120d262184bcee6bc37 [file] [log] [blame] [edit]
/*
* Copyright (c) 2016-2020, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <assert.h>
#include <stdint.h>
#include <platform_def.h>
#include <arch.h>
#include <arch_helpers.h>
#include <common/bl_common.h>
#include <common/debug.h>
#include <common/desc_image_load.h>
#include <drivers/auth/auth_mod.h>
#include <plat/common/platform.h>
#include "bl2_private.h"
/*******************************************************************************
* This function loads SCP_BL2/BL3x images and returns the ep_info for
* the next executable image.
******************************************************************************/
struct entry_point_info *bl2_load_images(void)
{
bl_params_t *bl2_to_next_bl_params;
bl_load_info_t *bl2_load_info;
const bl_load_info_node_t *bl2_node_info;
int plat_setup_done = 0;
int err;
/*
* Get information about the images to load.
*/
bl2_load_info = plat_get_bl_image_load_info();
assert(bl2_load_info != NULL);
assert(bl2_load_info->head != NULL);
assert(bl2_load_info->h.type == PARAM_BL_LOAD_INFO);
assert(bl2_load_info->h.version >= VERSION_2);
bl2_node_info = bl2_load_info->head;
while (bl2_node_info != NULL) {
/*
* Perform platform setup before loading the image,
* if indicated in the image attributes AND if NOT
* already done before.
*/
if ((bl2_node_info->image_info->h.attr &
IMAGE_ATTRIB_PLAT_SETUP) != 0U) {
if (plat_setup_done != 0) {
WARN("BL2: Platform setup already done!!\n");
} else {
INFO("BL2: Doing platform setup\n");
bl2_platform_setup();
plat_setup_done = 1;
}
}
err = bl2_plat_handle_pre_image_load(bl2_node_info->image_id);
if (err != 0) {
ERROR("BL2: Failure in pre image load handling (%i)\n", err);
plat_error_handler(err);
}
if ((bl2_node_info->image_info->h.attr &
IMAGE_ATTRIB_SKIP_LOADING) == 0U) {
INFO("BL2: Loading image id %d\n", bl2_node_info->image_id);
err = load_auth_image(bl2_node_info->image_id,
bl2_node_info->image_info);
if (err != 0) {
ERROR("BL2: Failed to load image id %d (%i)\n",
bl2_node_info->image_id, err);
plat_error_handler(err);
}
} else {
INFO("BL2: Skip loading image id %d\n", bl2_node_info->image_id);
}
/* Allow platform to handle image information. */
err = bl2_plat_handle_post_image_load(bl2_node_info->image_id);
if (err != 0) {
ERROR("BL2: Failure in post image load handling (%i)\n", err);
plat_error_handler(err);
}
/* Go to next image */
bl2_node_info = bl2_node_info->next_load_info;
}
/*
* Get information to pass to the next image.
*/
bl2_to_next_bl_params = plat_get_next_bl_params();
assert(bl2_to_next_bl_params != NULL);
assert(bl2_to_next_bl_params->head != NULL);
assert(bl2_to_next_bl_params->h.type == PARAM_BL_PARAMS);
assert(bl2_to_next_bl_params->h.version >= VERSION_2);
assert(bl2_to_next_bl_params->head->ep_info != NULL);
/* Populate arg0 for the next BL image if not already provided */
if (bl2_to_next_bl_params->head->ep_info->args.arg0 == (u_register_t)0)
bl2_to_next_bl_params->head->ep_info->args.arg0 =
(u_register_t)bl2_to_next_bl_params;
/* Flush the parameters to be passed to next image */
plat_flush_next_bl_params();
return bl2_to_next_bl_params->head->ep_info;
}