u-boot/drivers/watchdog/bfin_wdt.c
Sonic Zhang e9a389a184 blackfin: Move blackfin watchdog driver out of the blackfin arch folder.
- Enable hw_watchdog_init() in watchdog.h if CONFIG_HW_WATCHDOG is defined.
- Move blackfin hw watchdog driver to the generic driver folder.
- Call hw_watchdog_init() from blackfin board init code.
- Reuse macro CONFIG_WATCHDOG_TIMEOUT_MSECS
- Update README.watchdog accordingly

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
2013-05-13 16:30:26 +08:00

26 lines
518 B
C

/*
* watchdog.c - driver for Blackfin on-chip watchdog
*
* Copyright (c) 2007-2009 Analog Devices Inc.
*
* Licensed under the GPL-2 or later.
*/
#include <common.h>
#include <watchdog.h>
#include <asm/blackfin.h>
#include <asm/mach-common/bits/watchdog.h>
void hw_watchdog_reset(void)
{
bfin_write_WDOG_STAT(0);
}
void hw_watchdog_init(void)
{
bfin_write_WDOG_CTL(WDDIS);
SSYNC();
bfin_write_WDOG_CNT(CONFIG_WATCHDOG_TIMEOUT_MSECS / 1000 * get_sclk());
hw_watchdog_reset();
bfin_write_WDOG_CTL(WDEN);
}