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Commit 363c55ca authored by Wu Zhangjin's avatar Wu Zhangjin Committed by Ralf Baechle
Browse files

MIPS: Add hibernation support 



[Ralf: SMP support requires CPU hotplugging which MIPS currently doesn't
support.  As implemented in this patch cache and tlb flushing will also be
invoked with interrupts disabled so smp_call_function() will blow up in
charming ways.  So limit to !SMP.]

Reviewed-by: default avatarPavel Machek <pavel@ucw.cz>
Reviewed-by: default avatarYan Hua <yanh@lemote.com>
Reviewed-by: default avatarArnaud Patard <apatard@mandriva.com>
Reviewed-by: default avatarAtsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: default avatarWu Zhangjin <wuzj@lemote.com>
Signed-off-by: default avatarHu Hongbing <huhb@lemote.com>
Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent 4bb1a108

arch/mips/Kconfig

+4 −0
Original line number Diff line number Diff line
@@ -2134,6 +2134,10 @@ endmenu 


menu "Power management options"



config ARCH_HIBERNATION_POSSIBLE

	def_bool y

	depends on !SMP



config ARCH_SUSPEND_POSSIBLE

	def_bool y

	depends on !SMP

arch/mips/Makefile

+3 −0
Original line number Diff line number Diff line
@@ -677,6 +677,9 @@ core-y += arch/mips/kernel/ arch/mips/mm/ arch/mips/math-emu/ 


drivers-$(CONFIG_OPROFILE)	+= arch/mips/oprofile/



# suspend and hibernation support

drivers-$(CONFIG_PM)	+= arch/mips/power/



ifdef CONFIG_LASAT

rom.bin rom.sw: vmlinux

	$(Q)$(MAKE) $(build)=arch/mips/lasat/image $@

arch/mips/include/asm/suspend.h

0 → 100644
+9 −0
Original line number Diff line number Diff line 
#ifndef __ASM_SUSPEND_H

#define __ASM_SUSPEND_H



static inline int arch_prepare_suspend(void) { return 0; }



/* References to section boundaries */

extern const void __nosave_begin, __nosave_end;



#endif /* __ASM_SUSPEND_H */

arch/mips/kernel/asm-offsets.c

+13 −0
Original line number Diff line number Diff line
@@ -14,6 +14,7 @@ 
#include <linux/mm.h>

#include <linux/interrupt.h>

#include <linux/kbuild.h>

#include <linux/suspend.h>

#include <asm/ptrace.h>

#include <asm/processor.h>
@@ -326,3 +327,15 @@ void output_octeon_cop2_state_defines(void) 
	BLANK();

}

#endif



#ifdef CONFIG_HIBERNATION

void output_pbe_defines(void)

{

	COMMENT(" Linux struct pbe offsets. ");

	OFFSET(PBE_ADDRESS, pbe, address);

	OFFSET(PBE_ORIG_ADDRESS, pbe, orig_address);

	OFFSET(PBE_NEXT, pbe, next);

	DEFINE(PBE_SIZE, sizeof(struct pbe));

	BLANK();

}

#endif

arch/mips/power/Makefile

0 → 100644
+1 −0
Original line number Diff line number Diff line 
obj-$(CONFIG_HIBERNATION) += cpu.o hibernate.o