74 lines
1.9 KiB
ArmAsm
74 lines
1.9 KiB
ArmAsm
/* linux/arch/arm/plat-s5p/sleep.S
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*
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* Copyright (c) 2010 Samsung Electronics Co., Ltd.
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* http://www.samsung.com
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*
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* S5PV210 power Manager (Suspend-To-RAM) support
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* Based on S3C2410 sleep code by:
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* Ben Dooks, (c) 2004 Simtec Electronics
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*
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* Based on PXA/SA1100 sleep code by:
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* Nicolas Pitre, (c) 2002 Monta Vista Software Inc
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* Cliff Brake, (c) 2001
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/linkage.h>
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#include <asm/assembler.h>
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#include <asm/memory.h>
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.text
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/* s3c_cpu_save
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*
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* entry:
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* r1 = v:p offset
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*/
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ENTRY(s3c_cpu_save)
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stmfd sp!, { r3 - r12, lr }
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ldr r3, =resume_with_mmu
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bl cpu_suspend
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ldr r0, =pm_cpu_sleep
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ldr r0, [ r0 ]
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mov pc, r0
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resume_with_mmu:
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ldmfd sp!, { r3 - r12, pc }
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.ltorg
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/* sleep magic, to allow the bootloader to check for an valid
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* image to resume to. Must be the first word before the
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* s3c_cpu_resume entry.
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*/
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.word 0x2bedf00d
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/* s3c_cpu_resume
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*
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* resume code entry for bootloader to call
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*
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* we must put this code here in the data segment as we have no
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* other way of restoring the stack pointer after sleep, and we
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* must not write to the code segment (code is read-only)
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*/
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ENTRY(s3c_cpu_resume)
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b cpu_resume
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