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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-21 17:43:51 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-21 17:43:51 +0000
commitbe58c81aff4cd4c0ccf43dbd7998da4a6a08c03b (patch)
tree779c248fb61c83f65d1f0dc867f2053d76b4e03a /plat/common/plat_bl_common.c
parentInitial commit. (diff)
downloadarm-trusted-firmware-be58c81aff4cd4c0ccf43dbd7998da4a6a08c03b.tar.xz
arm-trusted-firmware-be58c81aff4cd4c0ccf43dbd7998da4a6a08c03b.zip
Adding upstream version 2.10.0+dfsg.upstream/2.10.0+dfsgupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'plat/common/plat_bl_common.c')
-rw-r--r--plat/common/plat_bl_common.c137
1 files changed, 137 insertions, 0 deletions
diff --git a/plat/common/plat_bl_common.c b/plat/common/plat_bl_common.c
new file mode 100644
index 0000000..89b77ba
--- /dev/null
+++ b/plat/common/plat_bl_common.c
@@ -0,0 +1,137 @@
+/*
+ * Copyright (c) 2018-2020, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+
+#include <arch_helpers.h>
+#include <common/bl_common.h>
+#include <common/debug.h>
+#include <lib/xlat_tables/xlat_tables_compat.h>
+#include <plat/common/platform.h>
+#include <services/arm_arch_svc.h>
+#include <smccc_helpers.h>
+#include <tools_share/firmware_encrypted.h>
+
+/*
+ * The following platform functions are weakly defined. The Platforms
+ * may redefine with strong definition.
+ */
+#pragma weak bl2_el3_plat_prepare_exit
+#pragma weak plat_error_handler
+#pragma weak bl2_plat_preload_setup
+#pragma weak bl2_plat_handle_pre_image_load
+#pragma weak bl2_plat_handle_post_image_load
+#pragma weak plat_try_next_boot_source
+#pragma weak plat_get_enc_key_info
+#pragma weak plat_is_smccc_feature_available
+#pragma weak plat_get_soc_version
+#pragma weak plat_get_soc_revision
+
+int32_t plat_get_soc_version(void)
+{
+ return SMC_ARCH_CALL_NOT_SUPPORTED;
+}
+
+int32_t plat_get_soc_revision(void)
+{
+ return SMC_ARCH_CALL_NOT_SUPPORTED;
+}
+
+int32_t plat_is_smccc_feature_available(u_register_t fid __unused)
+{
+ return SMC_ARCH_CALL_NOT_SUPPORTED;
+}
+
+void bl2_el3_plat_prepare_exit(void)
+{
+}
+
+void __dead2 plat_error_handler(int err)
+{
+ while (1)
+ wfi();
+}
+
+void bl2_plat_preload_setup(void)
+{
+}
+
+int bl2_plat_handle_pre_image_load(unsigned int image_id)
+{
+ return 0;
+}
+
+int bl2_plat_handle_post_image_load(unsigned int image_id)
+{
+ return 0;
+}
+
+int plat_try_next_boot_source(void)
+{
+ return 0;
+}
+
+/*
+ * Weak implementation to provide dummy decryption key only for test purposes,
+ * platforms must override this API for any real world firmware encryption
+ * use-case.
+ */
+int plat_get_enc_key_info(enum fw_enc_status_t fw_enc_status, uint8_t *key,
+ size_t *key_len, unsigned int *flags,
+ const uint8_t *img_id, size_t img_id_len)
+{
+#define DUMMY_FIP_ENC_KEY { 0x12, 0x34, 0x56, 0x78, 0x90, 0xab, 0xcd, 0xef, \
+ 0x12, 0x34, 0x56, 0x78, 0x90, 0xab, 0xcd, 0xef, \
+ 0x12, 0x34, 0x56, 0x78, 0x90, 0xab, 0xcd, 0xef, \
+ 0x12, 0x34, 0x56, 0x78, 0x90, 0xab, 0xcd, 0xef }
+
+ const uint8_t dummy_key[] = DUMMY_FIP_ENC_KEY;
+
+ assert(*key_len >= sizeof(dummy_key));
+
+ *key_len = sizeof(dummy_key);
+ memcpy(key, dummy_key, *key_len);
+ *flags = 0;
+
+ return 0;
+}
+
+/*
+ * Set up the page tables for the generic and platform-specific memory regions.
+ * The size of the Trusted SRAM seen by the BL image must be specified as well
+ * as an array specifying the generic memory regions which can be;
+ * - Code section;
+ * - Read-only data section;
+ * - Init code section, if applicable
+ * - Coherent memory region, if applicable.
+ */
+
+void __init setup_page_tables(const mmap_region_t *bl_regions,
+ const mmap_region_t *plat_regions)
+{
+#if LOG_LEVEL >= LOG_LEVEL_VERBOSE
+ const mmap_region_t *regions = bl_regions;
+
+ while (regions->size != 0U) {
+ VERBOSE("Region: 0x%lx - 0x%lx has attributes 0x%x\n",
+ regions->base_va,
+ regions->base_va + regions->size,
+ regions->attr);
+ regions++;
+ }
+#endif
+ /*
+ * Map the Trusted SRAM with appropriate memory attributes.
+ * Subsequent mappings will adjust the attributes for specific regions.
+ */
+ mmap_add(bl_regions);
+
+ /* Now (re-)map the platform-specific memory regions */
+ mmap_add(plat_regions);
+
+ /* Create the page tables to reflect the above mappings */
+ init_xlat_tables();
+}