64 lines
1.2 KiB
C
64 lines
1.2 KiB
C
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/*
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* Copyright (c) 2023 Jerzy Kasenberg.
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr/device.h>
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#include <zephyr/drivers/hwinfo.h>
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#include <soc.h>
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int z_impl_hwinfo_get_reset_cause(uint32_t *cause)
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{
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int ret = 0;
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uint32_t reason = CRG_TOP->RESET_STAT_REG;
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uint32_t flags = 0;
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/*
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* When POR is detected other bits are not valid.
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*/
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if (reason & CRG_TOP_RESET_STAT_REG_PORESET_STAT_Msk) {
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flags = RESET_POR;
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} else {
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if (reason & CRG_TOP_RESET_STAT_REG_HWRESET_STAT_Msk) {
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flags |= RESET_PIN;
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}
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if (reason & CRG_TOP_RESET_STAT_REG_SWRESET_STAT_Msk) {
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flags |= RESET_SOFTWARE;
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}
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if (reason & CRG_TOP_RESET_STAT_REG_WDOGRESET_STAT_Msk) {
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flags |= RESET_WATCHDOG;
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}
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if (reason & CRG_TOP_RESET_STAT_REG_CMAC_WDOGRESET_STAT_Msk) {
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flags |= RESET_WATCHDOG;
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}
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if (reason & CRG_TOP_RESET_STAT_REG_SWD_HWRESET_STAT_Msk) {
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flags |= RESET_DEBUG;
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}
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}
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*cause = flags;
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return ret;
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}
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int z_impl_hwinfo_clear_reset_cause(void)
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{
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int ret = 0;
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CRG_TOP->RESET_STAT_REG = 0;
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return ret;
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}
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int z_impl_hwinfo_get_supported_reset_cause(uint32_t *supported)
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{
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*supported = (RESET_PIN
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| RESET_SOFTWARE
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| RESET_POR
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| RESET_WATCHDOG
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| RESET_DEBUG);
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return 0;
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}
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