From 102b0d2daa97dae68d3eed54d8fe37a9cc38a892 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 28 Apr 2024 11:13:47 +0200
Subject: Adding upstream version 2.8.0+dfsg.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 bl2u/bl2u_main.c | 65 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 bl2u/bl2u_main.c

(limited to 'bl2u/bl2u_main.c')

diff --git a/bl2u/bl2u_main.c b/bl2u/bl2u_main.c
new file mode 100644
index 0000000..fcb73b9
--- /dev/null
+++ b/bl2u/bl2u_main.c
@@ -0,0 +1,65 @@
+/*
+ * 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();
+}
-- 
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