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- // SPDX-License-Identifier: GPL-2.0-only
- /*
- * Joshua Henderson <[email protected]>
- * Copyright (C) 2015 Microchip Technology Inc. All rights reserved.
- */
- #include <linux/init.h>
- #include <linux/pm.h>
- #include <asm/reboot.h>
- #include <asm/mach-pic32/pic32.h>
- #define PIC32_RSWRST 0x10
- static void pic32_halt(void)
- {
- while (1) {
- __asm__(".set push;\n"
- ".set arch=r4000;\n"
- "wait;\n"
- ".set pop;\n"
- );
- }
- }
- static void pic32_machine_restart(char *command)
- {
- void __iomem *reg =
- ioremap(PIC32_BASE_RESET + PIC32_RSWRST, sizeof(u32));
- pic32_syskey_unlock();
- /* magic write/read */
- __raw_writel(1, reg);
- (void)__raw_readl(reg);
- pic32_halt();
- }
- static void pic32_machine_halt(void)
- {
- local_irq_disable();
- pic32_halt();
- }
- static int __init mips_reboot_setup(void)
- {
- _machine_restart = pic32_machine_restart;
- _machine_halt = pic32_machine_halt;
- pm_power_off = pic32_machine_halt;
- return 0;
- }
- arch_initcall(mips_reboot_setup);
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