diff options
| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-01-19 10:24:56 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-02-19 11:11:41 +0000 |
| commit | 0462b4477ea3260304bbcd97c64c0b704b4f0f85 (patch) | |
| tree | bf5baa29b411f0ea5f3ebeb30d12a4faf83a72cb /arch/arm/plat-versatile/headsmp.S | |
| parent | cdab142a80d859984eb5e3876e0e762b1f0bded9 (diff) | |
ARM: realview/vexpress: consolidate SMP bringup code
Realview and Versatile Express share the same SMP bringup code, so
consolidate the two implementations.
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/plat-versatile/headsmp.S')
| -rw-r--r-- | arch/arm/plat-versatile/headsmp.S | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/arch/arm/plat-versatile/headsmp.S b/arch/arm/plat-versatile/headsmp.S new file mode 100644 index 000000000000..d397a1fb2f54 --- /dev/null +++ b/arch/arm/plat-versatile/headsmp.S @@ -0,0 +1,40 @@ +/* + * linux/arch/arm/plat-versatile/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 + +/* + * Realview/Versatile Express 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(versatile_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 |