OpenModem/bertos/cpu/arm/io/at91_rstc.h
2014-04-03 22:21:37 +02:00

112 lines
5.1 KiB
C

/**
* \file
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*
*
* \author Francesco Sacchi <batt@develer.com>
*
* AT91 reset controller.
* This file is based on NUT/OS implementation. See license below.
*/
/*
* Copyright (C) 2005-2006 by egnite Software GmbH. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the copyright holders nor the names of
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY EGNITE SOFTWARE GMBH AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL EGNITE
* SOFTWARE GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* For additional information see http://www.ethernut.de/
*/
#ifndef AT91_RTSC_H
#define AT91_RTSC_H
/** Reset Controller Control Register */
/*\{*/
#define RSTC_CR (*((reg32_t *)(RSTC_BASE + 0x00))) ///< Reset controller control register address.
#define RSTC_PROCRST 0 ///< Processor reset.
#define RSTC_PERRST 2 ///< Peripheral reset.
#define RSTC_EXTRST 3 ///< External reset.
#define RSTC_KEY 0xA5000000 ///< Password.
/*\}*/
/** Reset Controller Status Register */
/*\{*/
#define RSTC_SR (*((reg32_t *)(RSTC_BASE + 0x04))) ///< Reset controller status register address.
#define RSTC_URSTS 0 ///< User reset status.
#define RSTC_BODSTS 1 ///< Brownout detection status.
#define RSTC_RSTTYP_MASK 0x00000700 ///< Reset type.
#define RSTC_RSTTYP_POWERUP 0x00000000 ///< Power-up reset.
//#define RSTC_RSTTYP_WAKEUP 0x00000100 ///< VDDCORE rising.
#define RSTC_RSTTYP_WATCHDOG 0x00000200 ///< Watchdog reset.
#define RSTC_RSTTYP_SOFTWARE 0x00000300 ///< Software reset.
#define RSTC_RSTTYP_USER 0x00000400 ///< User reset.
#define RSTC_RSTTYP_BROWNOUT 0x00000500 ///< Brownout reset.
#define RSTC_NRSTL 16 ///< NRST pin level.
#define RSTC_SRCMP 17 ///< Software reset command in progress.
/*\}*/
/** Reset Controller Mode Register */
/*\{*/
#define RSTC_MR (*((reg32_t *)(RSTC_BASE + 0x08))) ///< Reset controller mode register address.
#define RSTC_URSTEN 0 ///< User reset enable.
#define RSTC_URSTIEN 4 ///< User reset interrupt enable.
#define RSTC_ERSTL_MASK 0x00000F00 ///< External reset length.
#define RSTC_ERSTL_SHIFT 8 ///< Least significant bit of external reset length.
#define RSTC_BODIEN 16 ///< Brown-out detection interrupt enable.
/*\}*/
#endif /* AT91_RTSC_H */