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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-03-15 19:32:47 +0300 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-03-15 19:32:47 +0300 |
| commit | 9ced9f03d12d7539e86b0bff5bc750153c976c34 (patch) | |
| tree | dcb8a23b0245d3d4d2719d7ea987f7eee608c553 /arch/arm/mach-exynos4/headsmp.S | |
| parent | 9b963f32c38b4c7d2da667e4458967b550f30bee (diff) | |
| parent | b0b6ff0b21057bb8e58b0be8b427a4713fd4b5a5 (diff) | |
| download | linux-9ced9f03d12d7539e86b0bff5bc750153c976c34.tar.xz | |
Merge branch 'for-rmk' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into devel-stable
Conflicts:
arch/arm/mm/Kconfig
Diffstat (limited to 'arch/arm/mach-exynos4/headsmp.S')
| -rw-r--r-- | arch/arm/mach-exynos4/headsmp.S | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/arch/arm/mach-exynos4/headsmp.S b/arch/arm/mach-exynos4/headsmp.S new file mode 100644 index 000000000000..6c6cfc50c46b --- /dev/null +++ b/arch/arm/mach-exynos4/headsmp.S @@ -0,0 +1,41 @@ +/* + * linux/arch/arm/mach-exynos4/headsmp.S + * + * Cloned from linux/arch/arm/mach-realview/headsmp.S + * + * Copyright (c) 2003 ARM Limited + * All Rights Reserved + * + * 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> + + __INIT + +/* + * exynos4 specific entry point for secondary CPUs. This provides + * a "holding pen" into which all secondary cores are held until we're + * ready for them to initialise. + */ +ENTRY(exynos4_secondary_startup) + mrc p15, 0, r0, c0, c0, 5 + and r0, r0, #15 + adr r4, 1f + ldmia r4, {r5, r6} + sub r4, r4, r5 + add r6, r6, r4 +pen: ldr r7, [r6] + cmp r7, r0 + bne pen + + /* + * we've been released from the holding pen: secondary_stack + * should now contain the SVC stack for this core + */ + b secondary_startup + +1: .long . + .long pen_release |