| /* |
| * (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 */ |
