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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:02:30 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:02:30 +0000 |
| commit | 76cb841cb886eef6b3bee341a2266c76578724ad (patch) | |
| tree | f5892e5ba6cc11949952a6ce4ecbe6d516d6ce58 /arch/arm/mach-socfpga/headsmp.S | |
| parent | Initial commit. (diff) | |
| download | linux-76cb841cb886eef6b3bee341a2266c76578724ad.tar.xz linux-76cb841cb886eef6b3bee341a2266c76578724ad.zip | |
Adding upstream version 4.19.249.upstream/4.19.249
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/arm/mach-socfpga/headsmp.S')
| -rw-r--r-- | arch/arm/mach-socfpga/headsmp.S | 36 |
1 files changed, 36 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..c160fa300 --- /dev/null +++ b/arch/arm/mach-socfpga/headsmp.S @@ -0,0 +1,36 @@ +/* + * Copyright (c) 2003 ARM Limited + * Copyright (c) u-boot contributors + * Copyright (c) 2012 Pavel Machek <pavel@denx.de> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#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) |