u-boot/board/freescale/ls1021aqds/psci.S
Hongbo Zhang aeb901f2a6 ARMv7: PSCI: ls102xa: add more PSCI v1.0 functions implemention
This patch implements PSCI functions for ls102xa SoC following PSCI v1.0,
they are as the list:
    psci_version,
    psci_features,
    psci_cpu_suspend,
    psci_affinity_info,
    psci_system_reset,
    psci_system_off.

Tested on LS1021aQDS, LS1021aTWR.

Signed-off-by: Wang Dongsheng <dongsheng.wang@nxp.com>
Signed-off-by: Hongbo Zhang <hongbo.zhang@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
2016-07-26 09:02:49 -07:00

33 lines
561 B
ArmAsm

/*
* 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:
@ Get QIXIS base address
movw r1, #(QIXIS_BASE & 0xffff)
movt r1, #(QIXIS_BASE >> 16)
ldrb r2, [r1, #QIXIS_PWR_CTL]
orr r2, r2, #QIXIS_PWR_CTL_POWEROFF
strb r2, [r1, #QIXIS_PWR_CTL]
1: wfi
b 1b
.popsection