diff options
Diffstat (limited to 'kernel/arch/arm/mach-socfpga/headsmp.S')
| -rw-r--r-- | kernel/arch/arm/mach-socfpga/headsmp.S | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/kernel/arch/arm/mach-socfpga/headsmp.S b/kernel/arch/arm/mach-socfpga/headsmp.S new file mode 100644 index 000000000..f65ea0af4 --- /dev/null +++ b/kernel/arch/arm/mach-socfpga/headsmp.S @@ -0,0 +1,37 @@ +/* + * 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> + + .arch armv7-a + +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. + */ + adr r0, 1f + ldmia r0, {r1, r2} + sub r2, r2, #PAGE_OFFSET + ldr r3, [r2] + ldr r4, [r3] + bx r4 + + .align +1: .long . + .long socfpga_cpu1start_addr +ENTRY(secondary_trampoline_end) + +ENTRY(socfpga_secondary_startup) + bl v7_invalidate_l1 + b secondary_startup +ENDPROC(socfpga_secondary_startup) |