1/* linux/arch/arm/plat-s5p/sleep.S 2 * 3 * Copyright (c) 2010 Samsung Electronics Co., Ltd. 4 * http://www.samsung.com 5 * 6 * S5PV210 power Manager (Suspend-To-RAM) support 7 * Based on S3C2410 sleep code by: 8 * Ben Dooks, (c) 2004 Simtec Electronics 9 * 10 * Based on PXA/SA1100 sleep code by: 11 * Nicolas Pitre, (c) 2002 Monta Vista Software Inc 12 * Cliff Brake, (c) 2001 13 * 14 * This program is free software; you can redistribute it and/or modify 15 * it under the terms of the GNU General Public License as published by 16 * the Free Software Foundation; either version 2 of the License, or 17 * (at your option) any later version. 18 * 19 * This program is distributed in the hope that it will be useful, 20 * but WITHOUT ANY WARRANTY; without even the implied warranty of 21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 22 * GNU General Public License for more details. 23 * 24 * You should have received a copy of the GNU General Public License 25 * along with this program; if not, write to the Free Software 26 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 27*/ 28 29#include <linux/linkage.h> 30#include <asm/assembler.h> 31#include <asm/memory.h> 32 33 .text 34 35 /* s3c_cpu_save 36 * 37 * entry: 38 * r1 = v:p offset 39 */ 40 41ENTRY(s3c_cpu_save) 42 43 stmfd sp!, { r3 - r12, lr } 44 ldr r3, =resume_with_mmu 45 bl cpu_suspend 46 47 ldr r0, =pm_cpu_sleep 48 ldr r0, [ r0 ] 49 mov pc, r0 50 51resume_with_mmu: 52 ldmfd sp!, { r3 - r12, pc } 53 54 .ltorg 55 56 /* sleep magic, to allow the bootloader to check for an valid 57 * image to resume to. Must be the first word before the 58 * s3c_cpu_resume entry. 59 */ 60 61 .word 0x2bedf00d 62 63 /* s3c_cpu_resume 64 * 65 * resume code entry for bootloader to call 66 * 67 * we must put this code here in the data segment as we have no 68 * other way of restoring the stack pointer after sleep, and we 69 * must not write to the code segment (code is read-only) 70 */ 71 72ENTRY(s3c_cpu_resume) 73 b cpu_resume 74