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2ef7f0dab6
Add Suspend-to-disk / swsusp / CONFIG_HIBERNATION support to the SuperH architecture. To suspend, use "swapon /dev/sda2; echo disk > /sys/power/state" To resume, pass "resume=/dev/sda2" on the kernel command line. The patch "pm: rework includes, remove arch ifdefs V2" is needed to allow the generic swsusp code to build properly. Hibernation is not enabled with this patch though, a patch setting ARCH_HIBERNATION_POSSIBLE will be submitted later. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
39 lines
851 B
C
39 lines
851 B
C
/*
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* swsusp.c - SuperH hibernation support
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*
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* Copyright (C) 2009 Magnus Damm
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*/
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#include <linux/mm.h>
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#include <linux/sched.h>
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#include <linux/suspend.h>
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#include <asm/suspend.h>
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#include <asm/sections.h>
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#include <asm/tlbflush.h>
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#include <asm/page.h>
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#include <asm/fpu.h>
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struct swsusp_arch_regs swsusp_arch_regs_cpu0;
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int pfn_is_nosave(unsigned long pfn)
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{
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unsigned long begin_pfn = __pa(&__nosave_begin) >> PAGE_SHIFT;
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unsigned long end_pfn = PAGE_ALIGN(__pa(&__nosave_end)) >> PAGE_SHIFT;
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return (pfn >= begin_pfn) && (pfn < end_pfn);
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}
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void save_processor_state(void)
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{
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init_fpu(current);
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}
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void restore_processor_state(void)
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{
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local_flush_tlb_all();
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}
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