1 /* 2 * Copyright (c) 2021 Sun Amar 3 * Copyright (c) 2021 Yonatan Schachter 4 * 5 * SPDX-License-Identifier: Apache-2.0 6 */ 7 8 #include <em_system.h> 9 #include <em_rmu.h> 10 #include <zephyr/drivers/hwinfo.h> 11 #include <string.h> 12 #include <zephyr/sys/byteorder.h> 13 14 #if defined(RMU_RSTCAUSE_BODUNREGRST) || defined(RMU_RSTCAUSE_BODREGRST) || \ 15 defined(RMU_RSTCAUSE_AVDDBOD) || defined(RMU_RSTCAUSE_DVDDBOD) || \ 16 defined(RMU_RSTCAUSE_DECBOD) || defined(RMU_RSTCAUSE_BODAVDD0) || \ 17 defined(RMU_RSTCAUSE_BODAVDD1) || \ 18 (defined(BU_PRESENT) && defined(_SILICON_LABS_32B_SERIES_0)) 19 #define HAS_BROWNOUT 1 20 #endif 21 z_impl_hwinfo_get_device_id(uint8_t * buffer,size_t length)22ssize_t z_impl_hwinfo_get_device_id(uint8_t *buffer, size_t length) 23 { 24 uint64_t unique_id = sys_cpu_to_be64(SYSTEM_GetUnique()); 25 26 if (length > sizeof(unique_id)) { 27 length = sizeof(unique_id); 28 } 29 30 memcpy(buffer, &unique_id, length); 31 32 return length; 33 } 34 z_impl_hwinfo_get_reset_cause(uint32_t * cause)35int z_impl_hwinfo_get_reset_cause(uint32_t *cause) 36 { 37 uint32_t flags = 0; 38 uint32_t __maybe_unused rmu_flags = RMU_ResetCauseGet(); 39 40 #ifdef RMU_RSTCAUSE_PORST 41 if (rmu_flags & RMU_RSTCAUSE_PORST) { 42 flags |= RESET_POR; 43 } 44 #endif /* RMU_RSTCAUSE_PORST */ 45 46 #ifdef RMU_RSTCAUSE_EXTRST 47 if (rmu_flags & RMU_RSTCAUSE_EXTRST) { 48 flags |= RESET_PIN; 49 } 50 #endif /* RMU_RSTCAUSE_EXTRST */ 51 52 #ifdef RMU_RSTCAUSE_SYSREQRST 53 if (rmu_flags & RMU_RSTCAUSE_SYSREQRST) { 54 flags |= RESET_SOFTWARE; 55 } 56 #endif /* RMU_RSTCAUSE_SYSREQRST */ 57 58 #ifdef RMU_RSTCAUSE_LOCKUPRST 59 if (rmu_flags & RMU_RSTCAUSE_LOCKUPRST) { 60 flags |= RESET_CPU_LOCKUP; 61 } 62 #endif /* RMU_RSTCAUSE_LOCKUPRST */ 63 64 #ifdef RMU_RSTCAUSE_WDOGRST 65 if (rmu_flags & RMU_RSTCAUSE_WDOGRST) { 66 flags |= RESET_WATCHDOG; 67 } 68 #endif /* RMU_RSTCAUSE_WDOGRST */ 69 70 #ifdef RMU_RSTCAUSE_EM4WURST 71 if (rmu_flags & RMU_RSTCAUSE_EM4WURST) { 72 flags |= RESET_LOW_POWER_WAKE; 73 } 74 #endif /* RMU_RSTCAUSE_EM4WURST */ 75 76 #ifdef RMU_RSTCAUSE_EM4RST 77 if (rmu_flags & RMU_RSTCAUSE_EM4RST) { 78 flags |= RESET_LOW_POWER_WAKE; 79 } 80 #endif /* RMU_RSTCAUSE_EM4RST */ 81 82 #ifdef RMU_RSTCAUSE_BODUNREGRST 83 if (rmu_flags & RMU_RSTCAUSE_BODUNREGRST) { 84 flags |= RESET_BROWNOUT; 85 } 86 #endif /* RMU_RSTCAUSE_BODUNREGRST */ 87 88 #ifdef RMU_RSTCAUSE_BODREGRST 89 if (rmu_flags & RMU_RSTCAUSE_BODREGRST) { 90 flags |= RESET_BROWNOUT; 91 } 92 #endif /* RMU_RSTCAUSE_BODREGRST */ 93 94 #ifdef RMU_RSTCAUSE_AVDDBOD 95 if (rmu_flags & RMU_RSTCAUSE_AVDDBOD) { 96 flags |= RESET_BROWNOUT; 97 } 98 #endif /* RMU_RSTCAUSE_AVDDBOD */ 99 100 #ifdef RMU_RSTCAUSE_DVDDBOD 101 if (rmu_flags & RMU_RSTCAUSE_DVDDBOD) { 102 flags |= RESET_BROWNOUT; 103 } 104 #endif /* RMU_RSTCAUSE_DVDDBOD */ 105 106 #ifdef RMU_RSTCAUSE_DECBOD 107 if (rmu_flags & RMU_RSTCAUSE_DECBOD) { 108 flags |= RESET_BROWNOUT; 109 } 110 #endif /* RMU_RSTCAUSE_DECBOD */ 111 112 #ifdef RMU_RSTCAUSE_BODAVDD0 113 if (rmu_flags & RMU_RSTCAUSE_BODAVDD0) { 114 flags |= RESET_BROWNOUT; 115 } 116 #endif /* RMU_RSTCAUSE_BODAVDD0 */ 117 118 #ifdef RMU_RSTCAUSE_BODAVDD1 119 if (rmu_flags & RMU_RSTCAUSE_BODAVDD1) { 120 flags |= RESET_BROWNOUT; 121 } 122 #endif /* RMU_RSTCAUSE_BODAVDD1 */ 123 124 #if defined(BU_PRESENT) && defined(_SILICON_LABS_32B_SERIES_0) 125 if (rmu_flags & RMU_RSTCAUSE_BUBODVDDDREG) { 126 flags |= RESET_BROWNOUT; 127 } 128 129 if (rmu_flags & RMU_RSTCAUSE_BUBODBUVIN) { 130 flags |= RESET_BROWNOUT; 131 } 132 133 if (rmu_flags & RMU_RSTCAUSE_BUBODUNREG) { 134 flags |= RESET_BROWNOUT; 135 } 136 137 if (rmu_flags & RMU_RSTCAUSE_BUBODREG) { 138 flags |= RESET_BROWNOUT; 139 } 140 141 if (rmu_flags & RMU_RSTCAUSE_BUMODERST) { 142 flags |= RESET_BROWNOUT; 143 } 144 145 #elif defined(RMU_RSTCAUSE_BUMODERST) 146 if (rmu_flags & RMU_RSTCAUSE_BUMODERST) { 147 flags |= RESET_BROWNOUT; 148 } 149 150 #endif /* defined(BU_PRESENT) && defined(_SILICON_LABS_32B_SERIES_0) */ 151 152 *cause = flags; 153 return 0; 154 } 155 z_impl_hwinfo_clear_reset_cause(void)156int z_impl_hwinfo_clear_reset_cause(void) 157 { 158 RMU_ResetCauseClear(); 159 160 return 0; 161 } 162 z_impl_hwinfo_get_supported_reset_cause(uint32_t * supported)163int z_impl_hwinfo_get_supported_reset_cause(uint32_t *supported) 164 { 165 *supported = RESET_PIN 166 | RESET_SOFTWARE 167 | RESET_POR 168 | RESET_WATCHDOG 169 | RESET_CPU_LOCKUP 170 #if defined(RMU_RSTCAUSE_EM4WURST) || defined(RMU_RSTCAUSE_EM4RST) 171 | RESET_LOW_POWER_WAKE 172 #endif /* defined(RMU_RSTCAUSE_EM4WURST) || defined(RMU_RSTCAUSE_EM4RST) */ 173 #if HAS_BROWNOUT 174 | RESET_BROWNOUT 175 #endif /* HAS_BROWNOUT */ 176 ; 177 return 0; 178 } 179
