// SPDX-License-Identifier: GPL-2.0-only /* * * Copyright (C) 2012 Thomas Langer <thomas.langer@lantiq.com> * Copyright (C) 2012 John Crispin <john@phrozen.org> */ #include <linux/init.h> #include <linux/io.h> #include <linux/pm.h> #include <asm/reboot.h> #include <linux/export.h> #include <lantiq_soc.h> /* * Dummy implementation. Used to allow platform code to find out what * source was booted from */ unsigned char ltq_boot_select(void) { return BS_SPI; } #define BOOT_REG_BASE (KSEG1 | 0x1F200000) #define BOOT_PW1_REG (BOOT_REG_BASE | 0x20) #define BOOT_PW2_REG (BOOT_REG_BASE | 0x24) #define BOOT_PW1 0x4C545100 #define BOOT_PW2 0x0051544C #define WDT_REG_BASE (KSEG1 | 0x1F8803F0) #define WDT_PW1 0x00BE0000 #define WDT_PW2 0x00DC0000 static void machine_restart(char *command) { local_irq_disable(); /* reboot magic */ ltq_w32(BOOT_PW1, (void *)BOOT_PW1_REG); /* 'LTQ\0' */ ltq_w32(BOOT_PW2, (void *)BOOT_PW2_REG); /* '\0QTL' */ ltq_w32(0, (void *)BOOT_REG_BASE); /* reset Bootreg RVEC */ /* watchdog magic */ ltq_w32(WDT_PW1, (void *)WDT_REG_BASE); ltq_w32(WDT_PW2 | (0x3 << 26) | /* PWL */ (0x2 << 24) | /* CLKDIV */ (0x1 << 31) | /* enable */ (1), /* reload */ (void *)WDT_REG_BASE); unreachable(); } static void machine_halt(void) { local_irq_disable(); unreachable(); } static void machine_power_off(void) { local_irq_disable(); unreachable(); } static int __init mips_reboot_setup(void) { _machine_restart = machine_restart; _machine_halt = machine_halt; pm_power_off = machine_power_off; return 0; } arch_initcall(mips_reboot_setup);