1fd372737b
When building the driver for efr32bg27_brd2602a none of the condition matches and the compiler warns for: hwinfo_gecko.c: In function 'z_impl_hwinfo_get_reset_cause': hwinfo_gecko.c:38:18: warning: unused variable 'rmu_flags' 38 | uint32_t rmu_flags = RMU_ResetCauseGet(); This fails the bi-weekly build, add a __maybe_unused to silence the warning. Signed-off-by: Fabio Baltieri <fabiobaltieri@google.com>
179 lines
4 KiB
C
179 lines
4 KiB
C
/*
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* Copyright (c) 2021 Sun Amar
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* Copyright (c) 2021 Yonatan Schachter
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <em_system.h>
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#include <em_rmu.h>
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#include <zephyr/drivers/hwinfo.h>
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#include <string.h>
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#include <zephyr/sys/byteorder.h>
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#if defined(RMU_RSTCAUSE_BODUNREGRST) || defined(RMU_RSTCAUSE_BODREGRST) || \
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defined(RMU_RSTCAUSE_AVDDBOD) || defined(RMU_RSTCAUSE_DVDDBOD) || \
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defined(RMU_RSTCAUSE_DECBOD) || defined(RMU_RSTCAUSE_BODAVDD0) || \
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defined(RMU_RSTCAUSE_BODAVDD1) || \
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(defined(BU_PRESENT) && defined(_SILICON_LABS_32B_SERIES_0))
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#define HAS_BROWNOUT 1
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#endif
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ssize_t z_impl_hwinfo_get_device_id(uint8_t *buffer, size_t length)
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{
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uint64_t unique_id = sys_cpu_to_be64(SYSTEM_GetUnique());
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if (length > sizeof(unique_id)) {
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length = sizeof(unique_id);
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}
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memcpy(buffer, &unique_id, length);
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return length;
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}
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int z_impl_hwinfo_get_reset_cause(uint32_t *cause)
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{
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uint32_t flags = 0;
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uint32_t __maybe_unused rmu_flags = RMU_ResetCauseGet();
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#ifdef RMU_RSTCAUSE_PORST
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if (rmu_flags & RMU_RSTCAUSE_PORST) {
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flags |= RESET_POR;
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}
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#endif /* RMU_RSTCAUSE_PORST */
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#ifdef RMU_RSTCAUSE_EXTRST
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if (rmu_flags & RMU_RSTCAUSE_EXTRST) {
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flags |= RESET_PIN;
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}
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#endif /* RMU_RSTCAUSE_EXTRST */
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#ifdef RMU_RSTCAUSE_SYSREQRST
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if (rmu_flags & RMU_RSTCAUSE_SYSREQRST) {
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flags |= RESET_SOFTWARE;
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}
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#endif /* RMU_RSTCAUSE_SYSREQRST */
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#ifdef RMU_RSTCAUSE_LOCKUPRST
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if (rmu_flags & RMU_RSTCAUSE_LOCKUPRST) {
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flags |= RESET_CPU_LOCKUP;
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}
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#endif /* RMU_RSTCAUSE_LOCKUPRST */
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#ifdef RMU_RSTCAUSE_WDOGRST
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if (rmu_flags & RMU_RSTCAUSE_WDOGRST) {
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flags |= RESET_WATCHDOG;
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}
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#endif /* RMU_RSTCAUSE_WDOGRST */
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#ifdef RMU_RSTCAUSE_EM4WURST
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if (rmu_flags & RMU_RSTCAUSE_EM4WURST) {
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flags |= RESET_LOW_POWER_WAKE;
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}
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#endif /* RMU_RSTCAUSE_EM4WURST */
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#ifdef RMU_RSTCAUSE_EM4RST
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if (rmu_flags & RMU_RSTCAUSE_EM4RST) {
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flags |= RESET_LOW_POWER_WAKE;
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}
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#endif /* RMU_RSTCAUSE_EM4RST */
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#ifdef RMU_RSTCAUSE_BODUNREGRST
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if (rmu_flags & RMU_RSTCAUSE_BODUNREGRST) {
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flags |= RESET_BROWNOUT;
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}
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#endif /* RMU_RSTCAUSE_BODUNREGRST */
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#ifdef RMU_RSTCAUSE_BODREGRST
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if (rmu_flags & RMU_RSTCAUSE_BODREGRST) {
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flags |= RESET_BROWNOUT;
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}
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#endif /* RMU_RSTCAUSE_BODREGRST */
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#ifdef RMU_RSTCAUSE_AVDDBOD
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if (rmu_flags & RMU_RSTCAUSE_AVDDBOD) {
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flags |= RESET_BROWNOUT;
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}
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#endif /* RMU_RSTCAUSE_AVDDBOD */
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#ifdef RMU_RSTCAUSE_DVDDBOD
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if (rmu_flags & RMU_RSTCAUSE_DVDDBOD) {
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flags |= RESET_BROWNOUT;
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}
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#endif /* RMU_RSTCAUSE_DVDDBOD */
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#ifdef RMU_RSTCAUSE_DECBOD
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if (rmu_flags & RMU_RSTCAUSE_DECBOD) {
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flags |= RESET_BROWNOUT;
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}
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#endif /* RMU_RSTCAUSE_DECBOD */
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#ifdef RMU_RSTCAUSE_BODAVDD0
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if (rmu_flags & RMU_RSTCAUSE_BODAVDD0) {
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flags |= RESET_BROWNOUT;
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}
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#endif /* RMU_RSTCAUSE_BODAVDD0 */
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#ifdef RMU_RSTCAUSE_BODAVDD1
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if (rmu_flags & RMU_RSTCAUSE_BODAVDD1) {
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flags |= RESET_BROWNOUT;
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}
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#endif /* RMU_RSTCAUSE_BODAVDD1 */
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#if defined(BU_PRESENT) && defined(_SILICON_LABS_32B_SERIES_0)
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if (rmu_flags & RMU_RSTCAUSE_BUBODVDDDREG) {
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flags |= RESET_BROWNOUT;
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}
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if (rmu_flags & RMU_RSTCAUSE_BUBODBUVIN) {
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flags |= RESET_BROWNOUT;
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}
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if (rmu_flags & RMU_RSTCAUSE_BUBODUNREG) {
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flags |= RESET_BROWNOUT;
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}
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if (rmu_flags & RMU_RSTCAUSE_BUBODREG) {
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flags |= RESET_BROWNOUT;
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}
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if (rmu_flags & RMU_RSTCAUSE_BUMODERST) {
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flags |= RESET_BROWNOUT;
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}
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#elif defined(RMU_RSTCAUSE_BUMODERST)
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if (rmu_flags & RMU_RSTCAUSE_BUMODERST) {
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flags |= RESET_BROWNOUT;
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}
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#endif /* defined(BU_PRESENT) && defined(_SILICON_LABS_32B_SERIES_0) */
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*cause = flags;
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return 0;
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}
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int z_impl_hwinfo_clear_reset_cause(void)
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{
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RMU_ResetCauseClear();
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return 0;
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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_CPU_LOCKUP
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#if defined(RMU_RSTCAUSE_EM4WURST) || defined(RMU_RSTCAUSE_EM4RST)
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| RESET_LOW_POWER_WAKE
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#endif /* defined(RMU_RSTCAUSE_EM4WURST) || defined(RMU_RSTCAUSE_EM4RST) */
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#if HAS_BROWNOUT
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| RESET_BROWNOUT
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#endif /* HAS_BROWNOUT */
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;
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return 0;
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}
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