1/* 2 * [origin: Linux kernel arch/arm/mach-at91/include/mach/at91_wdt.h] 3 * 4 * Copyright (C) 2008 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> 5 * Copyright (C) 2007 Andrew Victor 6 * Copyright (C) 2007 Atmel Corporation. 7 * 8 * Watchdog Timer (WDT) - System peripherals regsters. 9 * Based on AT91SAM9261 datasheet revision D. 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of the GNU General Public License as published by 13 * the Free Software Foundation; either version 2 of the License, or 14 * (at your option) any later version. 15 */ 16 17#ifndef AT91_WDT_H 18#define AT91_WDT_H 19 20#ifdef __ASSEMBLY__ 21 22#define AT91_ASM_WDT_MR (ATMEL_BASE_WDT + 0x04) 23 24#else 25 26typedef struct at91_wdt { 27 u32 cr; 28 u32 mr; 29 u32 sr; 30} at91_wdt_t; 31 32#endif 33 34#define AT91_WDT_CR_WDRSTT 1 35#define AT91_WDT_CR_KEY 0xa5000000 /* KEY Password */ 36 37#define AT91_WDT_MR_WDV(x) (x & 0xfff) 38#define AT91_WDT_MR_WDFIEN 0x00001000 39#define AT91_WDT_MR_WDRSTEN 0x00002000 40#define AT91_WDT_MR_WDRPROC 0x00004000 41#define AT91_WDT_MR_WDDIS 0x00008000 42#define AT91_WDT_MR_WDD(x) ((x & 0xfff) << 16) 43#define AT91_WDT_MR_WDDBGHLT 0x10000000 44#define AT91_WDT_MR_WDIDLEHLT 0x20000000 45 46#ifdef CONFIG_AT91_LEGACY 47 48#define AT91_WDT_CR (AT91_WDT + 0x00) /* Watchdog Control Register */ 49#define AT91_WDT_WDRSTT (1 << 0) /* Restart */ 50#define AT91_WDT_KEY (0xa5 << 24) /* KEY Password */ 51 52#define AT91_WDT_MR (AT91_WDT + 0x04) /* Watchdog Mode Register */ 53#define AT91_WDT_WDV (0xfff << 0) /* Counter Value */ 54#define AT91_WDT_WDFIEN (1 << 12) /* Fault Interrupt Enable */ 55#define AT91_WDT_WDRSTEN (1 << 13) /* Reset Processor */ 56#define AT91_WDT_WDRPROC (1 << 14) /* Timer Restart */ 57#define AT91_WDT_WDDIS (1 << 15) /* Watchdog Disable */ 58#define AT91_WDT_WDD (0xfff << 16) /* Delta Value */ 59#define AT91_WDT_WDDBGHLT (1 << 28) /* Debug Halt */ 60#define AT91_WDT_WDIDLEHLT (1 << 29) /* Idle Halt */ 61 62#define AT91_WDT_SR (AT91_WDT + 0x08) /* Watchdog Status Register */ 63#define AT91_WDT_WDUNF (1 << 0) /* Watchdog Underflow */ 64#define AT91_WDT_WDERR (1 << 1) /* Watchdog Error */ 65 66#endif /* CONFIG_AT91_LEGACY */ 67#endif 68