u-boot/arch/arm/mach-imx/mx7/psci.S
Anson Huang 4f0cd03723 imx: mx7: psci: add system power off support
Add i.MX7 PSCI system power off support, linux
kernel can use "poweroff" command to power off
system via SNVS, PMIC power will be disabled.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
2018-02-04 12:00:58 +01:00

60 lines
808 B
ArmAsm

/*
* Copyright (C) 2015-2016 Freescale Semiconductor, Inc.
* Copyright 2017 NXP
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <config.h>
#include <linux/linkage.h>
#include <asm/armv7.h>
#include <asm/arch-armv7/generictimer.h>
#include <asm/psci.h>
.pushsection ._secure.text, "ax"
.arch_extension sec
.globl psci_cpu_on
psci_cpu_on:
push {r4, r5, lr}
mov r4, r0
mov r5, r1
mov r0, r1
mov r1, r2
bl psci_save_target_pc
mov r0, r4
mov r1, r5
ldr r2, =psci_cpu_entry
bl imx_cpu_on
pop {r4, r5, pc}
.globl psci_cpu_off
psci_cpu_off:
bl psci_cpu_off_common
bl psci_get_cpu_id
bl imx_cpu_off
1: wfi
b 1b
.globl psci_system_reset
psci_system_reset:
bl imx_system_reset
2: wfi
b 2b
.globl psci_system_off
psci_system_off:
bl imx_system_off
3: wfi
b 3b
.popsection