diff options
| author | Magnus Damm <damm@opensource.se> | 2010-12-14 16:56:55 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2010-12-14 18:15:44 +0900 |
| commit | 1c51ed4fb9f11fa1e0873aa2d5b28f42a85ac299 (patch) | |
| tree | 258c5de6db68146a86fc27ae1dc2b8fed2dc40e3 /arch/arm/mach-shmobile/headsmp.S | |
| parent | 09dd7ded60019d6a4fd2ae20a08c4ad2bc3ed3e9 (diff) | |
ARM: mach-shmobile: SMP base support
Add SMP base support for R-Mobile / SH-Mobile processors.
This patch contains all base code to support CONFIG_SMP
regardless of ARCH_SHMOBILE processor type. Both local timer
and CPU hotplug are supported, but no processor specific
code is included.
At this point only the default behavior is in place, so
a single core will always be used even though CONFIG_SMP
is enabled on multicore systems.
The SMP Kconfig entry for arch/arm/Kconfig is excluded from
this patch to simplify merging.
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/arm/mach-shmobile/headsmp.S')
| -rw-r--r-- | arch/arm/mach-shmobile/headsmp.S | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/arch/arm/mach-shmobile/headsmp.S b/arch/arm/mach-shmobile/headsmp.S new file mode 100644 index 000000000000..a5c5af1e6bce --- /dev/null +++ b/arch/arm/mach-shmobile/headsmp.S @@ -0,0 +1,26 @@ +/* + * SMP support for R-Mobile / SH-Mobile + * + * Copyright (C) 2010 Magnus Damm + * Copyright (C) 2010 Takashi Yoshii + * + * Based on vexpress, 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 + +/* + * Reset vector for secondary CPUs. + * This will be mapped at address 0 by SBAR register. + * We need _long_ jump to the physical address. + */ + .align 12 +ENTRY(shmobile_secondary_vector) + ldr pc, 1f +1: .long secondary_startup - CONFIG_PAGE_OFFSET + CONFIG_MEMORY_START |