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omap4: hotplug: Add basic CPU hotplug support

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This patch adds cpu hotplug support for OMAP4430. Only CPU inactive
state is supported as a low power state in the basic hot-plug support

Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Cc: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Santosh Shilimkar
2010-08-02 13:18:19 +03:00
committed by Tony Lindgren
parent 3f9eaf0984
commit 7d35b8d09f
4 changed files with 89 additions and 1 deletions
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7
arch/arm/mach-omap2/include/mach/omap4-common.h
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@@ -13,6 +13,13 @@
#ifndef OMAP_ARCH_OMAP4_COMMON_H
#define OMAP_ARCH_OMAP4_COMMON_H
/*
* wfi used in low power code. Directly opcode is used instead
* of instruction to avoid mulit-omap build break
*/
#define do_wfi() \
__asm__ __volatile__ (".word 0xe320f003" : : : "memory")
#ifdef CONFIG_CACHE_L2X0
extern void __iomem *l2cache_base;
#endif