summaryrefslogtreecommitdiffstats
path: root/bl2/bl2_image_load_v2.c
diff options
context:
space:
mode:
Diffstat (limited to 'bl2/bl2_image_load_v2.c')
-rw-r--r--bl2/bl2_image_load_v2.c110
1 files changed, 110 insertions, 0 deletions
diff --git a/bl2/bl2_image_load_v2.c b/bl2/bl2_image_load_v2.c
new file mode 100644
index 0000000..dee3fc2
--- /dev/null
+++ b/bl2/bl2_image_load_v2.c
@@ -0,0 +1,110 @@
+/*
+ * Copyright (c) 2016-2022, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+#include <stdint.h>
+
+#include <arch.h>
+#include <arch_helpers.h>
+#include "bl2_private.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 <platform_def.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 %u\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 %u (%i)\n",
+ bl2_node_info->image_id, err);
+ plat_error_handler(err);
+ }
+ } else {
+ INFO("BL2: Skip loading image id %u\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;
+}