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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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63 lines
1.3 KiB
C
63 lines
1.3 KiB
C
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/*
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* Joshua Henderson <joshua.henderson@microchip.com>
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* Copyright (C) 2015 Microchip Technology Inc. All rights reserved.
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*
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* This program is free software; you can distribute it and/or modify it
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* under the terms of the GNU General Public License (Version 2) as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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#include <linux/init.h>
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#include <linux/pm.h>
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#include <asm/reboot.h>
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#include <asm/mach-pic32/pic32.h>
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#define PIC32_RSWRST 0x10
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static void pic32_halt(void)
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{
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while (1) {
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__asm__(".set push;\n"
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".set arch=r4000;\n"
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"wait;\n"
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".set pop;\n"
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);
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}
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}
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static void pic32_machine_restart(char *command)
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{
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void __iomem *reg =
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ioremap(PIC32_BASE_RESET + PIC32_RSWRST, sizeof(u32));
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pic32_syskey_unlock();
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/* magic write/read */
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__raw_writel(1, reg);
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(void)__raw_readl(reg);
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pic32_halt();
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}
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static void pic32_machine_halt(void)
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{
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local_irq_disable();
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pic32_halt();
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}
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static int __init mips_reboot_setup(void)
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{
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_machine_restart = pic32_machine_restart;
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_machine_halt = pic32_machine_halt;
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pm_power_off = pic32_machine_halt;
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return 0;
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}
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arch_initcall(mips_reboot_setup);
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