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| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2012-01-09 11:38:23 +0400 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2012-01-09 11:38:23 +0400 |
| commit | da733563be5a9da26fe81d9f007262d00b846e22 (patch) | |
| tree | db28291df94a2043af2123911984c5c173da4e6f /arch/arm/mach-exynos/headsmp.S | |
| parent | 6ccbcf2cb41131f8d56ef0723bf3f7c1f8486076 (diff) | |
| parent | dab78d7924598ea4031663dd10db814e2e324928 (diff) | |
| download | linux-da733563be5a9da26fe81d9f007262d00b846e22.tar.xz | |
Merge branch 'next' into for-linus
Diffstat (limited to 'arch/arm/mach-exynos/headsmp.S')
| -rw-r--r-- | arch/arm/mach-exynos/headsmp.S | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/arch/arm/mach-exynos/headsmp.S b/arch/arm/mach-exynos/headsmp.S new file mode 100644 index 000000000000..3cdeb3647542 --- /dev/null +++ b/arch/arm/mach-exynos/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> + + __CPUINIT + +/* + * 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 |