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| author |   Russell King <rmk@dyn-67.arm.linux.org.uk> | 2005-11-07 21:05:42 +0000 |
|---|---|---|
| committer |   Russell King <rmk+kernel@arm.linux.org.uk> | 2005-11-07 21:05:42 +0000 |
| commit | 862184fe013146a0d9654a5598c5a2691747541c (patch) | |
| tree | 0f3f0d46c79c7eae3d504c0e1be9ff923f1b2e36 /arch/arm/mach-realview/headsmp.S | |
| parent | Merge with ARM SMP tree (diff) | |
| download | linux-dev-862184fe013146a0d9654a5598c5a2691747541c.tar.xz linux-dev-862184fe013146a0d9654a5598c5a2691747541c.zip | |
[ARM SMP] Add Realview MPcore SMP support
Add SMP support for the MPcore tile fitted to the Realview ARM
platform.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-realview/headsmp.S')
| -rw-r--r-- | arch/arm/mach-realview/headsmp.S | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/arch/arm/mach-realview/headsmp.S b/arch/arm/mach-realview/headsmp.S new file mode 100644 index 000000000000..4075473cf68a --- /dev/null +++ b/arch/arm/mach-realview/headsmp.S @@ -0,0 +1,39 @@ +/* + * 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 + +/* + * Realview 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(realview_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 |