diff options
Diffstat (limited to 'arch/arm/mach-socfpga/headsmp.S')
| -rw-r--r-- | arch/arm/mach-socfpga/headsmp.S | 33 |
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 0000000000..f7e91a7724 --- /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/page.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) |