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Diffstat (limited to 'src/mainboard/google/gale/reset.c')
| -rw-r--r-- | src/mainboard/google/gale/reset.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/src/mainboard/google/gale/reset.c b/src/mainboard/google/gale/reset.c new file mode 100644 index 0000000000..94dcd4befd --- /dev/null +++ b/src/mainboard/google/gale/reset.c @@ -0,0 +1,48 @@ +/* + * + * This file is part of the coreboot project. + * + * Copyright (c) 2014, The Linux Foundation. All rights reserved. + * Copyright 2014 Google Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <console/console.h> +#include <soc/iomap.h> +#include <reset.h> + +/* Watchdog bite time set to default reset value */ +#define RESET_WDT_BITE_TIME 0x31F3 + +/* Watchdog bark time value is kept larger than the watchdog timeout + * of 0x31F3, effectively disabling the watchdog bark interrupt + */ +#define RESET_WDT_BARK_TIME (5 * RESET_WDT_BITE_TIME) + +static void wdog_reset(void) +{ + printk(BIOS_DEBUG, "\nResetting with watchdog!\n"); + + write32(APCS_WDT0_EN, 0); + write32(APCS_WDT0_RST, 1); + write32(APCS_WDT0_BARK_TIME, RESET_WDT_BARK_TIME); + write32(APCS_WDT0_BITE_TIME, RESET_WDT_BITE_TIME); + write32(APCS_WDT0_EN, 1); + write32(APCS_WDT0_CPU0_WDOG_EXPIRED_ENABLE, 1); + + for (;;) + ; +} + +void hard_reset(void) +{ + wdog_reset(); +} |