board/freescale/ls1021aqds/psci.S

   1 /* SPDX-License-Identifier: GPL-2.0+ */
   2 /*
   3  * Copyright 2016 NXP Semiconductor.
   4  * Author: Wang Dongsheng <dongsheng.wang@freescale.com>
   5  */
   6
   7 #include <config.h>
   8 #include <linux/linkage.h>
   9
  10 #include <asm/armv7.h>
  11 #include <asm/psci.h>
  12
  13         .pushsection ._secure.text, "ax"
  14
  15         .arch_extension sec
  16
  17         .align  5
  18
  19 .globl  psci_system_off
  20 psci_system_off:
  21         @ Get QIXIS base address
  22         movw    r1, #(QIXIS_BASE & 0xffff)
  23         movt    r1, #(QIXIS_BASE >> 16)
  24
  25         ldrb    r2, [r1, #QIXIS_PWR_CTL]
  26         orr     r2, r2, #QIXIS_PWR_CTL_POWEROFF
  27         strb    r2, [r1, #QIXIS_PWR_CTL]
  28
  29 1:      wfi
  30         b       1b
  31
  32         .popsection