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| author | fishsoupisgood <github@madingley.org> | 2019-04-29 01:17:54 +0100 |
|---|---|---|
| committer | fishsoupisgood <github@madingley.org> | 2019-05-27 03:43:43 +0100 |
| commit | 3f2546b2ef55b661fd8dd69682b38992225e86f6 (patch) | |
| tree | 65ca85f13617aee1dce474596800950f266a456c /roms/u-boot/board/w7o/watchdog.c | |
| download | qemu-master.tar.gz qemu-master.tar.bz2 qemu-master.zip | |
Diffstat (limited to 'roms/u-boot/board/w7o/watchdog.c')
| -rw-r--r-- | roms/u-boot/board/w7o/watchdog.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/roms/u-boot/board/w7o/watchdog.c b/roms/u-boot/board/w7o/watchdog.c new file mode 100644 index 00000000..ff1b2120 --- /dev/null +++ b/roms/u-boot/board/w7o/watchdog.c @@ -0,0 +1,31 @@ +/* + * (C) Copyright 2001 + * Erik Theisen, Wave 7 Optics, etheisen@mindspring.com. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +/* + * W7O board level hardware watchdog. + */ +#include <common.h> +#include <config.h> + +#ifdef CONFIG_HW_WATCHDOG +#include <watchdog.h> + +void hw_watchdog_reset(void) +{ + volatile ushort *hwd = (ushort *)(CONFIG_SYS_W7O_EBC_PB7CR & 0xfff00000); + + /* + * Read the LMG's hwd register and toggle the + * watchdog bit to reset it. On the LMC, just + * reading it is enough, but toggling the bit + * doen't hurt either. + */ + *hwd = *hwd ^ 0x8000; + +} /* hw_watchdog_reset() */ + +#endif /* CONFIG_HW_WATCHDOG */ |