Adding upstream version 2.8.0+dfsg.upstream/2.8.0+dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 45 insertions, 0 deletions

diff --git a/bl2/aarch64/bl2_run_next_image.S b/bl2/aarch64/bl2_run_next_image.S
new file mode 100644
index 0000000..f0a8be8
--- /dev/null
+++ b/bl2/aarch64/bl2_run_next_image.S
@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2021, Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <arch.h>
+#include <asm_macros.S>
+#include <common/bl_common.h>
+
+	.globl	bl2_run_next_image
+
+
+func bl2_run_next_image
+	mov	x20,x0
+	/* ---------------------------------------------
+	 * MMU needs to be disabled because both BL2 and BL31 execute
+	 * in EL3, and therefore share the same address space.
+	 * BL31 will initialize the address space according to its
+	 * own requirement.
+	 * ---------------------------------------------
+	 */
+	bl	disable_mmu_icache_el3
+	tlbi	alle3
+	bl	bl2_el3_plat_prepare_exit
+
+#if ENABLE_PAUTH
+	/* ---------------------------------------------
+	 * Disable pointer authentication before jumping
+	 * to next boot image.
+	 * ---------------------------------------------
+	 */
+	bl	pauth_disable_el3
+#endif /* ENABLE_PAUTH */
+
+	ldp	x0, x1, [x20, #ENTRY_POINT_INFO_PC_OFFSET]
+	msr	elr_el3, x0
+	msr	spsr_el3, x1
+
+	ldp	x6, x7, [x20, #(ENTRY_POINT_INFO_ARGS_OFFSET + 0x30)]
+	ldp	x4, x5, [x20, #(ENTRY_POINT_INFO_ARGS_OFFSET + 0x20)]
+	ldp	x2, x3, [x20, #(ENTRY_POINT_INFO_ARGS_OFFSET + 0x10)]
+	ldp	x0, x1, [x20, #(ENTRY_POINT_INFO_ARGS_OFFSET + 0x0)]
+	exception_return
+endfunc bl2_run_next_image