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 adr r3, BSYM(s5pv210_finish_suspend) 43 b cpu_suspend 44 45s5pv210_finish_suspend: 46 ldr r0, =pm_cpu_sleep 47 ldr r0, [ r0 ] 48 mov pc, r0 49 50 .ltorg 51 52 /* sleep magic, to allow the bootloader to check for an valid 53 * image to resume to. Must be the first word before the 54 * s3c_cpu_resume entry. 55 */ 56 57 .word 0x2bedf00d 58 59 /* s3c_cpu_resume 60 * 61 * resume code entry for bootloader to call 62 * 63 * we must put this code here in the data segment as we have no 64 * other way of restoring the stack pointer after sleep, and we 65 * must not write to the code segment (code is read-only) 66 */ 67 68ENTRY(s3c_cpu_resume) 69 b cpu_resume 70