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| author | Changhwan Youn <chaos.youn@samsung.com> | 2010-07-26 16:08:52 +0400 |
|---|---|---|
| committer | Kukjin Kim <kgene.kim@samsung.com> | 2010-08-05 13:32:41 +0400 |
| commit | 2b12b5c4ff9e0f1c5f4e5d5bde57b919fe522df2 (patch) | |
| tree | 4e55113c74f9946b6f267449977a0bddb816c323 /arch/arm/mach-s5pv310/headsmp.S | |
| parent | 88baf2096c1c625c14831bc3438fd1e69bf1cef5 (diff) | |
| download | linux-2b12b5c4ff9e0f1c5f4e5d5bde57b919fe522df2.tar.xz | |
ARM: S5PV310: Add new CPU initialization support
This patch adds Samsung S5PV310/S5PC210 CPU support.
The S5PV310/S5PC210 integrates a ARM Cortex A9 multi-core.
Signed-off-by: Changhwan Youn <chaos.youn@samsung.com>
Signed-off-by: Jongpill Lee <boyko.lee@samsung.com>
Signed-off-by: Jiseong Oh <jiseong.oh@samsung.com>
[kgene.kim@samsung.com: fix build errors]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Diffstat (limited to 'arch/arm/mach-s5pv310/headsmp.S')
| -rw-r--r-- | arch/arm/mach-s5pv310/headsmp.S | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/arch/arm/mach-s5pv310/headsmp.S b/arch/arm/mach-s5pv310/headsmp.S new file mode 100644 index 000000000000..164b7b045713 --- /dev/null +++ b/arch/arm/mach-s5pv310/headsmp.S @@ -0,0 +1,41 @@ +/* + * linux/arch/arm/mach-s5pv310/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 + +/* + * s5pv310 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(s5pv310_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 |