/* linux/arch/arm/mach-s3c2410/sleep.S * * Copyright (c) 2004 Simtec Electronics *	Ben Dooks <ben@simtec.co.uk> * * S3C2410 Power Manager (Suspend-To-RAM) support * * Based on PXA/SA1100 sleep code by: *	Nicolas Pitre, (c) 2002 Monta Vista Software Inc *	Cliff Brake, (c) 2001 * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA*/#include <linux/linkage.h>#include <asm/assembler.h>#include <asm/hardware.h>#include <asm/arch/map.h>#include <asm/arch/regs-gpio.h>#include <asm/arch/regs-clock.h>#include <asm/arch/regs-mem.h>#include <asm/plat-s3c/regs-serial.h>	/* s3c2410_cpu_suspend	 *	 * put the cpu into sleep mode	*/ENTRY(s3c2410_cpu_suspend)	@@ prepare cpu to sleep	ldr	r4, =S3C2410_REFRESH	ldr	r5, =S3C24XX_MISCCR	ldr	r6, =S3C2410_CLKCON	ldr	r7, [ r4 ]		@ get REFRESH (and ensure in TLB)	ldr	r8, [ r5 ]		@ get MISCCR (and ensure in TLB)	ldr	r9, [ r6 ]		@ get CLKCON (and ensure in TLB)	orr	r7, r7, #S3C2410_REFRESH_SELF	@ SDRAM sleep command	orr	r8, r8, #S3C2410_MISCCR_SDSLEEP @ SDRAM power-down signals	orr	r9, r9, #S3C2410_CLKCON_POWER	@ power down command	teq	pc, #0			@ first as a trial-run to load cache	bl	s3c2410_do_sleep	teq	r0, r0			@ now do it for real	b	s3c2410_do_sleep	@	@@ align next bit of code to cache line	.align	5s3c2410_do_sleep:	streq	r7, [ r4 ]			@ SDRAM sleep command	streq	r8, [ r5 ]			@ SDRAM power-down config	streq	r9, [ r6 ]			@ CPU sleep1:	beq	1b	mov	pc, r14