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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 /bl2u/bl2u_main.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 'bl2u/bl2u_main.c')
-rw-r--r--bl2u/bl2u_main.c65
1 files changed, 65 insertions, 0 deletions
diff --git a/bl2u/bl2u_main.c b/bl2u/bl2u_main.c
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+/*
+ * Copyright (c) 2015-2020, 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 <bl1/bl1.h>
+#include <bl2u/bl2u.h>
+#include <common/bl_common.h>
+#include <common/debug.h>
+#include <drivers/auth/auth_mod.h>
+#include <drivers/console.h>
+#include <plat/common/platform.h>
+
+/*******************************************************************************
+ * This function is responsible to:
+ * Load SCP_BL2U if platform has defined SCP_BL2U_BASE
+ * Perform platform setup.
+ * Go back to EL3.
+ ******************************************************************************/
+void bl2u_main(void)
+{
+ NOTICE("BL2U: %s\n", version_string);
+ NOTICE("BL2U: %s\n", build_message);
+
+#if SCP_BL2U_BASE
+ int rc;
+ /* Load the subsequent bootloader images */
+ rc = bl2u_plat_handle_scp_bl2u();
+ if (rc != 0) {
+ ERROR("Failed to load SCP_BL2U (%i)\n", rc);
+ panic();
+ }
+#endif
+
+ /* Perform platform setup in BL2U after loading SCP_BL2U */
+ bl2u_platform_setup();
+
+ console_flush();
+
+#ifndef __aarch64__
+ /*
+ * For AArch32 state BL1 and BL2U share the MMU setup.
+ * Given that BL2U does not map BL1 regions, MMU needs
+ * to be disabled in order to go back to BL1.
+ */
+ disable_mmu_icache_secure();
+#endif /* !__aarch64__ */
+
+ /*
+ * Indicate that BL2U is done and resume back to
+ * normal world via an SMC to BL1.
+ * x1 could be passed to Normal world,
+ * so DO NOT pass any secret information.
+ */
+ smc(FWU_SMC_SEC_IMAGE_DONE, 0, 0, 0, 0, 0, 0, 0);
+ wfi();
+}