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68 lines
2.1 KiB
C
68 lines
2.1 KiB
C
/*
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* [origin: Linux kernel arch/arm/mach-at91/include/mach/at91_wdt.h]
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*
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* Copyright (C) 2008 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
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* Copyright (C) 2007 Andrew Victor
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* Copyright (C) 2007 Atmel Corporation.
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*
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* Watchdog Timer (WDT) - System peripherals regsters.
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* Based on AT91SAM9261 datasheet revision D.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#ifndef AT91_WDT_H
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#define AT91_WDT_H
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#ifdef __ASSEMBLY__
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#define AT91_ASM_WDT_MR (ATMEL_BASE_WDT + 0x04)
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#else
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typedef struct at91_wdt {
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u32 cr;
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u32 mr;
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u32 sr;
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} at91_wdt_t;
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#endif
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#define AT91_WDT_CR_WDRSTT 1
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#define AT91_WDT_CR_KEY 0xa5000000 /* KEY Password */
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#define AT91_WDT_MR_WDV(x) (x & 0xfff)
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#define AT91_WDT_MR_WDFIEN 0x00001000
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#define AT91_WDT_MR_WDRSTEN 0x00002000
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#define AT91_WDT_MR_WDRPROC 0x00004000
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#define AT91_WDT_MR_WDDIS 0x00008000
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#define AT91_WDT_MR_WDD(x) ((x & 0xfff) << 16)
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#define AT91_WDT_MR_WDDBGHLT 0x10000000
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#define AT91_WDT_MR_WDIDLEHLT 0x20000000
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#ifdef CONFIG_AT91_LEGACY
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#define AT91_WDT_CR (AT91_WDT + 0x00) /* Watchdog Control Register */
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#define AT91_WDT_WDRSTT (1 << 0) /* Restart */
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#define AT91_WDT_KEY (0xa5 << 24) /* KEY Password */
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#define AT91_WDT_MR (AT91_WDT + 0x04) /* Watchdog Mode Register */
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#define AT91_WDT_WDV (0xfff << 0) /* Counter Value */
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#define AT91_WDT_WDFIEN (1 << 12) /* Fault Interrupt Enable */
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#define AT91_WDT_WDRSTEN (1 << 13) /* Reset Processor */
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#define AT91_WDT_WDRPROC (1 << 14) /* Timer Restart */
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#define AT91_WDT_WDDIS (1 << 15) /* Watchdog Disable */
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#define AT91_WDT_WDD (0xfff << 16) /* Delta Value */
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#define AT91_WDT_WDDBGHLT (1 << 28) /* Debug Halt */
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#define AT91_WDT_WDIDLEHLT (1 << 29) /* Idle Halt */
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#define AT91_WDT_SR (AT91_WDT + 0x08) /* Watchdog Status Register */
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#define AT91_WDT_WDUNF (1 << 0) /* Watchdog Underflow */
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#define AT91_WDT_WDERR (1 << 1) /* Watchdog Error */
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#endif /* CONFIG_AT91_LEGACY */
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#endif
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