1/* MN10300 Reset controller and watchdog timer definitions 2 * 3 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. 4 * Written by David Howells (dhowells@redhat.com) 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public Licence 8 * as published by the Free Software Foundation; either version 9 * 2 of the Licence, or (at your option) any later version. 10 */ 11 12#ifndef _ASM_RESET_REGS_H 13#define _ASM_RESET_REGS_H 14 15#include <asm/cpu-regs.h> 16#include <asm/exceptions.h> 17 18#ifdef __KERNEL__ 19 20/* 21 * watchdog timer registers 22 */ 23#define WDBC __SYSREGC(0xc0001000, u8) /* watchdog binary counter reg */ 24 25#define WDCTR __SYSREG(0xc0001002, u8) /* watchdog timer control reg */ 26#define WDCTR_WDCK 0x07 /* clock source selection */ 27#define WDCTR_WDCK_256th 0x00 /* - OSCI/256 */ 28#define WDCTR_WDCK_1024th 0x01 /* - OSCI/1024 */ 29#define WDCTR_WDCK_2048th 0x02 /* - OSCI/2048 */ 30#define WDCTR_WDCK_16384th 0x03 /* - OSCI/16384 */ 31#define WDCTR_WDCK_65536th 0x04 /* - OSCI/65536 */ 32#define WDCTR_WDRST 0x40 /* binary counter reset */ 33#define WDCTR_WDCNE 0x80 /* watchdog timer enable */ 34 35#define RSTCTR __SYSREG(0xc0001004, u8) /* reset control reg */ 36#define RSTCTR_CHIPRST 0x01 /* chip reset */ 37#define RSTCTR_DBFRST 0x02 /* double fault reset flag */ 38#define RSTCTR_WDTRST 0x04 /* watchdog timer reset flag */ 39#define RSTCTR_WDREN 0x08 /* watchdog timer reset enable */ 40 41#ifndef __ASSEMBLY__ 42 43static inline void mn10300_proc_hard_reset(void) 44{ 45 RSTCTR &= ~RSTCTR_CHIPRST; 46 RSTCTR |= RSTCTR_CHIPRST; 47} 48 49extern unsigned int watchdog_alert_counter[]; 50 51extern void watchdog_go(void); 52extern asmlinkage void watchdog_handler(void); 53extern asmlinkage 54void watchdog_interrupt(struct pt_regs *, enum exception_code); 55 56#endif 57 58#endif /* __KERNEL__ */ 59 60#endif /* _ASM_RESET_REGS_H */ 61