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135 lines
4.1 KiB
C
135 lines
4.1 KiB
C
/****************************************************************************
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* boards/arm/samv7/common/src/sam_reset.c
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <nuttx/arch.h>
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#include <nuttx/board.h>
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#include "sam_systemreset.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: board_reset_cause
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*
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* Description:
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* Get the cause of last board reset. This should call architecture
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* specific logic to handle the register read.
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*
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* Input Parameters:
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* cause - Pointer to boardioc_reset_cause_s structure to which the
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* reason (and potentially subreason) is saved.
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*
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* Returned Value:
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* This functions should always return successfully with 0. We save
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* BOARDIOC_RESETCAUSE_UNKOWN in cause structure if we are
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* not able to get last reset cause from HW (which is unlikely).
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*
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****************************************************************************/
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#ifdef CONFIG_BOARDCTL_RESET_CAUSE
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int board_reset_cause(struct boardioc_reset_cause_s *cause)
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{
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int rst_cause;
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/* Get the reset cause from hardware */
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rst_cause = sam_get_reset_cause();
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switch (rst_cause)
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{
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case SAMV7_RESET_PWRUP:
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/* Power up */
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cause->cause = BOARDIOC_RESETCAUSE_SYS_CHIPPOR;
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break;
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case SAMV7_RESET_BACKUP:
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/* Wake up from backup (low power) mode */
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cause->cause = BOARDIOC_RESETCAUSE_LOWPOWER;
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break;
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case SAMV7_RESET_WDOG:
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/* Watchdog error */
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cause->cause = BOARDIOC_RESETCAUSE_CPU_RWDT;
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break;
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case SAMV7_RESET_SWRST:
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/* SW reset */
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cause->cause = BOARDIOC_RESETCAUSE_CPU_SOFT;
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break;
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case SAMV7_RESET_NRST:
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/* Reset from user by pressing reset button */
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cause->cause = BOARDIOC_RESETCAUSE_PIN;
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break;
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default:
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/* Unknown cause returned from HW */
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cause->cause = BOARDIOC_RESETCAUSE_UNKOWN;
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break;
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}
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return 0;
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}
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#endif /* CONFIG_BOARDCTL_RESET_CAUSE */
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/****************************************************************************
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* Name: board_reset
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*
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* Description:
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* Reset board. Support for this function is required by board-level
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* logic if CONFIG_BOARDCTL_RESET is selected.
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*
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* Input Parameters:
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* status - Status information provided with the reset event. This
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* meaning of this status information is board-specific. If not
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* used by a board, the value zero may be provided in calls to
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* board_reset().
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*
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* Returned Value:
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* If this function returns, then it was not possible to power-off the
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* board due to some constraints. The return value int this case is a
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* board-specific reason for the failure to shutdown.
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*
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****************************************************************************/
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#ifdef CONFIG_BOARDCTL_RESET
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int board_reset(int status)
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{
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up_systemreset();
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return 0;
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}
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#endif /* CONFIG_BOARDCTL_RESET */
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