GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

2026-09-06 03:52:57 +08:00
commit b1928b41c0
21813 changed files with 4413081 additions and 0 deletions
@@ -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;
+}