diff options
| author | Jeff Ohlstein <johlstei@codeaurora.org> | 2010-11-30 13:06:36 -0800 |
|---|---|---|
| committer | David Brown <davidb@codeaurora.org> | 2011-01-07 15:54:45 -0800 |
| commit | e14411da420bad7bdaae65cccd8787674e6c565e (patch) | |
| tree | 8ec2dca508a2e67f6dc4355b5dc7c4337a980be8 /arch/arm/mach-msm/headsmp.S | |
| parent | 9f1890a5de2a5fcf4fd9ffa3115047eed834349c (diff) | |
msm: add SMP support for msm
Signed-off-by: Jeff Ohlstein <johlstei@codeaurora.org>
Signed-off-by: David Brown <davidb@codeaurora.org>
Diffstat (limited to 'arch/arm/mach-msm/headsmp.S')
| -rw-r--r-- | arch/arm/mach-msm/headsmp.S | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/arch/arm/mach-msm/headsmp.S b/arch/arm/mach-msm/headsmp.S new file mode 100644 index 00000000000..d0c214338df --- /dev/null +++ b/arch/arm/mach-msm/headsmp.S @@ -0,0 +1,40 @@ +/* + * 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 + +/* + * MSM 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(msm_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 + + .align +1: .long . + .long pen_release |