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https://github.com/AsahiLinux/u-boot
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aeb901f2a6
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>
33 lines
561 B
ArmAsm
33 lines
561 B
ArmAsm
/*
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* Copyright 2016 NXP Semiconductor.
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* Author: Wang Dongsheng <dongsheng.wang@freescale.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <config.h>
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#include <linux/linkage.h>
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#include <asm/armv7.h>
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#include <asm/psci.h>
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.pushsection ._secure.text, "ax"
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.arch_extension sec
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.align 5
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.globl psci_system_off
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psci_system_off:
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@ Get QIXIS base address
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movw r1, #(QIXIS_BASE & 0xffff)
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movt r1, #(QIXIS_BASE >> 16)
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ldrb r2, [r1, #QIXIS_PWR_CTL]
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orr r2, r2, #QIXIS_PWR_CTL_POWEROFF
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strb r2, [r1, #QIXIS_PWR_CTL]
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1: wfi
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b 1b
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.popsection
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