mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
synced 2025-10-31 22:26:12 +00:00
65 lines
1.9 KiB
C
65 lines
1.9 KiB
C
/* MN10300 Reset controller and watchdog timer definitions
|
|
*
|
|
* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
|
|
* Written by David Howells (dhowells@redhat.com)
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public Licence
|
|
* as published by the Free Software Foundation; either version
|
|
* 2 of the Licence, or (at your option) any later version.
|
|
*/
|
|
|
|
#ifndef _ASM_RESET_REGS_H
|
|
#define _ASM_RESET_REGS_H
|
|
|
|
#include <asm/cpu-regs.h>
|
|
#include <asm/exceptions.h>
|
|
|
|
#ifdef __KERNEL__
|
|
|
|
#ifdef CONFIG_MN10300_WD_TIMER
|
|
#define ARCH_HAS_NMI_WATCHDOG /* See include/linux/nmi.h */
|
|
#endif
|
|
|
|
/*
|
|
* watchdog timer registers
|
|
*/
|
|
#define WDBC __SYSREGC(0xc0001000, u8) /* watchdog binary counter reg */
|
|
|
|
#define WDCTR __SYSREG(0xc0001002, u8) /* watchdog timer control reg */
|
|
#define WDCTR_WDCK 0x07 /* clock source selection */
|
|
#define WDCTR_WDCK_256th 0x00 /* - OSCI/256 */
|
|
#define WDCTR_WDCK_1024th 0x01 /* - OSCI/1024 */
|
|
#define WDCTR_WDCK_2048th 0x02 /* - OSCI/2048 */
|
|
#define WDCTR_WDCK_16384th 0x03 /* - OSCI/16384 */
|
|
#define WDCTR_WDCK_65536th 0x04 /* - OSCI/65536 */
|
|
#define WDCTR_WDRST 0x40 /* binary counter reset */
|
|
#define WDCTR_WDCNE 0x80 /* watchdog timer enable */
|
|
|
|
#define RSTCTR __SYSREG(0xc0001004, u8) /* reset control reg */
|
|
#define RSTCTR_CHIPRST 0x01 /* chip reset */
|
|
#define RSTCTR_DBFRST 0x02 /* double fault reset flag */
|
|
#define RSTCTR_WDTRST 0x04 /* watchdog timer reset flag */
|
|
#define RSTCTR_WDREN 0x08 /* watchdog timer reset enable */
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
static inline void mn10300_proc_hard_reset(void)
|
|
{
|
|
RSTCTR &= ~RSTCTR_CHIPRST;
|
|
RSTCTR |= RSTCTR_CHIPRST;
|
|
}
|
|
|
|
extern unsigned int watchdog_alert_counter;
|
|
|
|
extern void watchdog_go(void);
|
|
extern asmlinkage void watchdog_handler(void);
|
|
extern asmlinkage
|
|
void watchdog_interrupt(struct pt_regs *, enum exception_code);
|
|
|
|
#endif
|
|
|
|
#endif /* __KERNEL__ */
|
|
|
|
#endif /* _ASM_RESET_REGS_H */
|