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/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
*
* @ingroup RTEMSBSPsPowerPCMPC55XX
*
* @brief Header file for the watchdog timer.
*/
/*
* Copyright (c) 2008 embedded brains GmbH & Co. KG
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 THE COPYRIGHT OWNER 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.
*/
#ifndef LIBCPU_POWERPC_MPC55XX_WATCHDOG_H
#define LIBCPU_POWERPC_MPC55XX_WATCHDOG_H
#include <stdbool.h>
#include <rtems.h>
#include <libcpu/powerpc-utility.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
static inline void mpc55xx_watchdog_clear()
{
PPC_SET_SPECIAL_PURPOSE_REGISTER( BOOKE_TSR, BOOKE_TSR_WIS);
}
static inline void mpc55xx_watchdog_enable_interrupt( bool enable)
{
if (enable) {
PPC_SET_SPECIAL_PURPOSE_REGISTER_BITS( BOOKE_TCR, BOOKE_TCR_WIE);
} else {
PPC_CLEAR_SPECIAL_PURPOSE_REGISTER_BITS( BOOKE_TCR, BOOKE_TCR_WIE);
}
}
static inline rtems_status_code mpc55xx_watchdog_set_time_base_bit( uint32_t bit)
{
if (bit > 63) {
return RTEMS_INVALID_NUMBER;
}
PPC_SET_SPECIAL_PURPOSE_REGISTER_BITS_MASKED(
BOOKE_TCR,
BOOKE_TCR_WP( bit) | BOOKE_TCR_WPEXT( bit >> 2),
BOOKE_TCR_WP_MASK | BOOKE_TCR_WPEXT_MASK
);
return RTEMS_SUCCESSFUL;
}
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* LIBCPU_POWERPC_MPC55XX_WATCHDOG_H */
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