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38 lines
876 B
C
38 lines
876 B
C
/*
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* SPDX-FileCopyrightText: 2017 Ken Rabold
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* SPDX-License-Identifier: LGPL-2.1-only
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*/
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/**
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* @ingroup cpu_fe310
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* @{
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*
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* @file pm.c
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* @brief Implementation of the CPU power management for SiFive FE310
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*
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* @author Ken Rabold
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* @}
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*/
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#include <stdint.h>
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#include "periph/pm.h"
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#include "vendor/platform.h"
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void pm_set_lowest(void)
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{
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__asm__ volatile ("wfi");
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}
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void pm_reboot(void)
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{
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AON_REG(AON_WDOGKEY) = AON_WDOGKEY_VALUE;
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AON_REG(AON_WDOGCMP) = 0;
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//wdogconfig: : wdogrsten | enablealways | reset to 0 | max scale
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AON_REG(AON_WDOGKEY) = AON_WDOGKEY_VALUE;
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AON_REG(AON_WDOGCFG) |= (AON_WDOGCFG_RSTEN | AON_WDOGCFG_ENALWAYS | \
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AON_WDOGCFG_ZEROCMP | AON_WDOGCFG_SCALE);
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AON_REG(AON_WDOGKEY) = AON_WDOGKEY_VALUE;
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AON_REG(AON_WDOGFEED) = AON_WDOGFEED_VALUE;
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while (1) {}
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}
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