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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-28 09:13:47 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-28 09:13:47 +0000
commit102b0d2daa97dae68d3eed54d8fe37a9cc38a892 (patch)
treebcf648efac40ca6139842707f0eba5a4496a6dd2 /plat/common/plat_bl1_common.c
parentInitial commit. (diff)
downloadarm-trusted-firmware-102b0d2daa97dae68d3eed54d8fe37a9cc38a892.tar.xz
arm-trusted-firmware-102b0d2daa97dae68d3eed54d8fe37a9cc38a892.zip
Adding upstream version 2.8.0+dfsg.upstream/2.8.0+dfsgupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'plat/common/plat_bl1_common.c')
-rw-r--r--plat/common/plat_bl1_common.c117
1 files changed, 117 insertions, 0 deletions
diff --git a/plat/common/plat_bl1_common.c b/plat/common/plat_bl1_common.c
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+++ b/plat/common/plat_bl1_common.c
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+/*
+ * Copyright (c) 2015-2021, Arm Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+#include <errno.h>
+
+#include <platform_def.h>
+
+#include <arch_helpers.h>
+#include <bl1/bl1.h>
+#include <common/bl_common.h>
+#include <common/debug.h>
+#include <plat/common/platform.h>
+
+/*
+ * The following platform functions are weakly defined. They
+ * are default implementations that allow BL1 to compile in
+ * absence of real definitions. The Platforms may override
+ * with more complex definitions.
+ */
+#pragma weak bl1_plat_get_next_image_id
+#pragma weak bl1_plat_set_ep_info
+#pragma weak bl1_plat_get_image_desc
+#pragma weak bl1_plat_fwu_done
+#pragma weak bl1_plat_handle_pre_image_load
+#pragma weak bl1_plat_handle_post_image_load
+
+unsigned int bl1_plat_get_next_image_id(void)
+{
+ /* BL2 load will be done by default. */
+ return BL2_IMAGE_ID;
+}
+
+void bl1_plat_set_ep_info(unsigned int image_id,
+ struct entry_point_info *ep_info)
+{
+
+}
+
+int bl1_plat_handle_pre_image_load(unsigned int image_id)
+{
+ return 0;
+}
+
+/*
+ * Following is the default definition that always
+ * returns BL2 image details.
+ */
+struct image_desc *bl1_plat_get_image_desc(unsigned int image_id)
+{
+ static image_desc_t bl2_img_desc = BL2_IMAGE_DESC;
+ return &bl2_img_desc;
+}
+
+__dead2 void bl1_plat_fwu_done(void *client_cookie, void *reserved)
+{
+ while (true)
+ wfi();
+}
+
+/*
+ * The Platforms must override with real definition.
+ */
+#pragma weak bl1_plat_mem_check
+
+int bl1_plat_mem_check(uintptr_t mem_base, unsigned int mem_size,
+ unsigned int flags)
+{
+ assert(0);
+ return -ENOMEM;
+}
+
+/*
+ * Default implementation for bl1_plat_handle_post_image_load(). This function
+ * populates the default arguments to BL2. The BL2 memory layout structure
+ * is allocated and the calculated layout is populated in arg1 to BL2.
+ */
+int bl1_plat_handle_post_image_load(unsigned int image_id)
+{
+ meminfo_t *bl2_secram_layout;
+ meminfo_t *bl1_secram_layout;
+ image_desc_t *image_desc;
+ entry_point_info_t *ep_info;
+
+ if (image_id != BL2_IMAGE_ID)
+ return 0;
+
+ /* Get the image descriptor */
+ image_desc = bl1_plat_get_image_desc(BL2_IMAGE_ID);
+ assert(image_desc != NULL);
+
+ /* Get the entry point info */
+ ep_info = &image_desc->ep_info;
+
+ /* Find out how much free trusted ram remains after BL1 load */
+ bl1_secram_layout = bl1_plat_sec_mem_layout();
+
+ /*
+ * Create a new layout of memory for BL2 as seen by BL1 i.e.
+ * tell it the amount of total and free memory available.
+ * This layout is created at the first free address visible
+ * to BL2. BL2 will read the memory layout before using its
+ * memory for other purposes.
+ */
+ bl2_secram_layout = (meminfo_t *) bl1_secram_layout->total_base;
+
+ bl1_calc_bl2_mem_layout(bl1_secram_layout, bl2_secram_layout);
+
+ ep_info->args.arg1 = (uintptr_t)bl2_secram_layout;
+
+ VERBOSE("BL1: BL2 memory layout address = %p\n",
+ (void *) bl2_secram_layout);
+ return 0;
+}