| rjw | 1f88458 | 2022-01-06 17:20:42 +0800 | [diff] [blame^] | 1 | /* |
| 2 | * Cobalt Reset operations |
| 3 | * |
| 4 | * This file is subject to the terms and conditions of the GNU General Public |
| 5 | * License. See the file "COPYING" in the main directory of this archive |
| 6 | * for more details. |
| 7 | * |
| 8 | * Copyright (C) 1995, 1996, 1997 by Ralf Baechle |
| 9 | * Copyright (C) 2001 by Liam Davies (ldavies@agile.tv) |
| 10 | */ |
| 11 | #include <linux/init.h> |
| 12 | #include <linux/io.h> |
| 13 | #include <linux/leds.h> |
| 14 | |
| 15 | #include <asm/idle.h> |
| 16 | #include <asm/processor.h> |
| 17 | |
| 18 | #include <cobalt.h> |
| 19 | |
| 20 | #define RESET_PORT ((void __iomem *)CKSEG1ADDR(0x1c000000)) |
| 21 | #define RESET 0x0f |
| 22 | |
| 23 | DEFINE_LED_TRIGGER(power_off_led_trigger); |
| 24 | |
| 25 | static int __init ledtrig_power_off_init(void) |
| 26 | { |
| 27 | led_trigger_register_simple("power-off", &power_off_led_trigger); |
| 28 | return 0; |
| 29 | } |
| 30 | device_initcall(ledtrig_power_off_init); |
| 31 | |
| 32 | void cobalt_machine_halt(void) |
| 33 | { |
| 34 | /* |
| 35 | * turn on power off LED on RaQ |
| 36 | */ |
| 37 | led_trigger_event(power_off_led_trigger, LED_FULL); |
| 38 | |
| 39 | local_irq_disable(); |
| 40 | while (1) { |
| 41 | if (cpu_wait) |
| 42 | cpu_wait(); |
| 43 | } |
| 44 | } |
| 45 | |
| 46 | void cobalt_machine_restart(char *command) |
| 47 | { |
| 48 | writeb(RESET, RESET_PORT); |
| 49 | |
| 50 | /* we should never get here */ |
| 51 | cobalt_machine_halt(); |
| 52 | } |