Adding upstream version 5.10.209.upstream/5.10.209upstream

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

1 files changed, 33 insertions, 0 deletions

diff --git a/arch/arm/mach-socfpga/headsmp.S b/arch/arm/mach-socfpga/headsmp.S
new file mode 100644
index 000000000..54f1844ea
--- /dev/null
+++ b/arch/arm/mach-socfpga/headsmp.S
@@ -0,0 +1,33 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ *  Copyright (c) 2003 ARM Limited
+ *  Copyright (c) u-boot contributors
+ *  Copyright (c) 2012 Pavel Machek <pavel@denx.de>
+ */
+#include <linux/linkage.h>
+#include <linux/init.h>
+#include <asm/memory.h>
+#include <asm/assembler.h>
+
+	.arch	armv7-a
+	.arm
+
+ENTRY(secondary_trampoline)
+	/* CPU1 will always fetch from 0x0 when it is brought out of reset.
+	 * Thus, we can just subtract the PAGE_OFFSET to get the physical
+	 * address of &cpu1start_addr. This would not work for platforms
+	 * where the physical memory does not start at 0x0.
+	*/
+ARM_BE8(setend	be)
+	adr	r0, 1f
+	ldmia	r0, {r1, r2}
+	sub	r2, r2, #PAGE_OFFSET
+	ldr	r3, [r2]
+	ldr	r4, [r3]
+ARM_BE8(rev	r4, r4)
+	bx	r4
+
+	.align
+1:	.long	.
+	.long	socfpga_cpu1start_addr
+ENTRY(secondary_trampoline_end)