LXR linux/arch/arm/mach-pxa/standby.S

   1/*
   2 * PXA27x standby mode
   3 *
   4 * Author: David Burrage
   5 *
   6 * 2005 (c) MontaVista Software, Inc. This file is licensed under
   7 * the terms of the GNU General Public License version 2. This program
   8 * is licensed "as is" without any warranty of any kind, whether express
   9 * or implied.
  10 */
  11
  12#include <linux/linkage.h>
  13#include <asm/assembler.h>
  14#include <asm/hardware.h>
  15
  16#include <asm/arch/pxa-regs.h>
  17
  18                .text
  19
  20ENTRY(pxa_cpu_standby)
  21        ldr     r0, =PSSR
  22        mov     r1, #(PSSR_PH | PSSR_STS)
  23        mov     r2, #PWRMODE_STANDBY
  24        mov     r3, #UNCACHED_PHYS_0    @ Read mem context in.
  25        ldr     ip, [r3]
  26        b       1f
  27
  28        .align  5
  291:      mcr     p14, 0, r2, c7, c0, 0   @ put the system into Standby
  30        str     r1, [r0]                @ make sure PSSR_PH/STS are clear
  31        mov     pc, lr
  32