u-boot/board/freescale/ls1021atwr/psci.S

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ArmAsm
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/*
* Copyright 2016 NXP Semiconductor.
* Author: Wang Dongsheng <dongsheng.wang@freescale.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <config.h>
#include <linux/linkage.h>
#include <asm/armv7.h>
#include <asm/psci.h>
.pushsection ._secure.text, "ax"
.arch_extension sec
.align 5
.globl psci_system_off
psci_system_off:
1: wfi
b 1b
.popsection