1 #include "bios.hpp" 2 3 #include "utils.hpp" 4 5 #include <time.h> 6 7 #include <array> 8 #include <chrono> 9 #include <ctime> 10 #include <iostream> 11 #include <stdexcept> 12 #include <string> 13 #include <variant> 14 #include <vector> 15 16 namespace pldm 17 { 18 19 namespace responder 20 { 21 22 namespace utils 23 { 24 25 void epochToBCDTime(uint64_t timeSec, uint8_t& seconds, uint8_t& minutes, 26 uint8_t& hours, uint8_t& day, uint8_t& month, 27 uint16_t& year) 28 { 29 auto t = time_t(timeSec); 30 auto time = localtime(&t); 31 32 seconds = pldm::utils::decimalToBcd(time->tm_sec); 33 minutes = pldm::utils::decimalToBcd(time->tm_min); 34 hours = pldm::utils::decimalToBcd(time->tm_hour); 35 day = pldm::utils::decimalToBcd(time->tm_mday); 36 month = pldm::utils::decimalToBcd(time->tm_mon + 37 1); // The number of months in the range 38 // 0 to 11.PLDM expects range 1 to 12 39 year = pldm::utils::decimalToBcd(time->tm_year + 40 1900); // The number of years since 1900 41 } 42 43 std::time_t timeToEpoch(uint8_t seconds, uint8_t minutes, uint8_t hours, 44 uint8_t day, uint8_t month, uint16_t year) 45 { 46 struct std::tm stm; 47 48 stm.tm_year = year - 1900; 49 stm.tm_mon = month - 1; 50 stm.tm_mday = day; 51 stm.tm_hour = hours; 52 stm.tm_min = minutes; 53 stm.tm_sec = seconds; 54 stm.tm_isdst = -1; 55 56 // It will get the time in seconds since 57 // Epoch, 1970.1.1 00:00:00 +0000,UTC. 58 return timegm(&stm); 59 } 60 61 } // namespace utils 62 63 namespace bios 64 { 65 66 using EpochTimeUS = uint64_t; 67 68 DBusHandler dbusHandler; 69 70 Handler::Handler() : biosConfig(BIOS_JSONS_DIR, BIOS_TABLES_DIR, &dbusHandler) 71 { 72 biosConfig.removeTables(); 73 biosConfig.buildTables(); 74 75 handlers.emplace(PLDM_SET_DATE_TIME, 76 [this](const pldm_msg* request, size_t payloadLength) { 77 return this->setDateTime(request, payloadLength); 78 }); 79 handlers.emplace(PLDM_GET_DATE_TIME, 80 [this](const pldm_msg* request, size_t payloadLength) { 81 return this->getDateTime(request, payloadLength); 82 }); 83 handlers.emplace(PLDM_GET_BIOS_TABLE, 84 [this](const pldm_msg* request, size_t payloadLength) { 85 return this->getBIOSTable(request, payloadLength); 86 }); 87 handlers.emplace(PLDM_GET_BIOS_ATTRIBUTE_CURRENT_VALUE_BY_HANDLE, 88 [this](const pldm_msg* request, size_t payloadLength) { 89 return this->getBIOSAttributeCurrentValueByHandle( 90 request, payloadLength); 91 }); 92 handlers.emplace(PLDM_SET_BIOS_ATTRIBUTE_CURRENT_VALUE, 93 [this](const pldm_msg* request, size_t payloadLength) { 94 return this->setBIOSAttributeCurrentValue( 95 request, payloadLength); 96 }); 97 } 98 99 Response Handler::getDateTime(const pldm_msg* request, size_t /*payloadLength*/) 100 { 101 uint8_t seconds = 0; 102 uint8_t minutes = 0; 103 uint8_t hours = 0; 104 uint8_t day = 0; 105 uint8_t month = 0; 106 uint16_t year = 0; 107 108 constexpr auto timeInterface = "xyz.openbmc_project.Time.EpochTime"; 109 constexpr auto bmcTimePath = "/xyz/openbmc_project/time/bmc"; 110 Response response(sizeof(pldm_msg_hdr) + PLDM_GET_DATE_TIME_RESP_BYTES, 0); 111 auto responsePtr = reinterpret_cast<pldm_msg*>(response.data()); 112 EpochTimeUS timeUsec; 113 114 try 115 { 116 timeUsec = pldm::utils::DBusHandler().getDbusProperty<EpochTimeUS>( 117 bmcTimePath, "Elapsed", timeInterface); 118 } 119 catch (const sdbusplus::exception::SdBusError& e) 120 { 121 std::cerr << "Error getting time, PATH=" << bmcTimePath 122 << " TIME INTERACE=" << timeInterface << "\n"; 123 124 return CmdHandler::ccOnlyResponse(request, PLDM_ERROR); 125 } 126 127 uint64_t timeSec = std::chrono::duration_cast<std::chrono::seconds>( 128 std::chrono::microseconds(timeUsec)) 129 .count(); 130 131 pldm::responder::utils::epochToBCDTime(timeSec, seconds, minutes, hours, 132 day, month, year); 133 134 auto rc = encode_get_date_time_resp(request->hdr.instance_id, PLDM_SUCCESS, 135 seconds, minutes, hours, day, month, 136 year, responsePtr); 137 if (rc != PLDM_SUCCESS) 138 { 139 return ccOnlyResponse(request, rc); 140 } 141 142 return response; 143 } 144 145 Response Handler::setDateTime(const pldm_msg* request, size_t payloadLength) 146 { 147 uint8_t seconds = 0; 148 uint8_t minutes = 0; 149 uint8_t hours = 0; 150 uint8_t day = 0; 151 uint8_t month = 0; 152 uint16_t year = 0; 153 std::time_t timeSec; 154 155 constexpr auto setTimeInterface = "xyz.openbmc_project.Time.EpochTime"; 156 constexpr auto setTimePath = "/xyz/openbmc_project/time/bmc"; 157 constexpr auto timeSetPro = "Elapsed"; 158 159 auto rc = decode_set_date_time_req(request, payloadLength, &seconds, 160 &minutes, &hours, &day, &month, &year); 161 if (rc != PLDM_SUCCESS) 162 { 163 return ccOnlyResponse(request, rc); 164 } 165 timeSec = pldm::responder::utils::timeToEpoch(seconds, minutes, hours, day, 166 month, year); 167 uint64_t timeUsec = std::chrono::duration_cast<std::chrono::microseconds>( 168 std::chrono::seconds(timeSec)) 169 .count(); 170 PropertyValue value{timeUsec}; 171 try 172 { 173 DBusMapping dbusMapping{setTimePath, setTimeInterface, timeSetPro, 174 "uint64_t"}; 175 pldm::utils::DBusHandler().setDbusProperty(dbusMapping, value); 176 } 177 catch (std::exception& e) 178 { 179 180 std::cerr << "Error Setting time,PATH=" << setTimePath 181 << "TIME INTERFACE=" << setTimeInterface 182 << "ERROR=" << e.what() << "\n"; 183 184 return ccOnlyResponse(request, PLDM_ERROR); 185 } 186 187 return ccOnlyResponse(request, PLDM_SUCCESS); 188 } 189 190 Response Handler::getBIOSTable(const pldm_msg* request, size_t payloadLength) 191 { 192 uint32_t transferHandle{}; 193 uint8_t transferOpFlag{}; 194 uint8_t tableType{}; 195 196 auto rc = decode_get_bios_table_req(request, payloadLength, &transferHandle, 197 &transferOpFlag, &tableType); 198 if (rc != PLDM_SUCCESS) 199 { 200 return ccOnlyResponse(request, rc); 201 } 202 203 auto table = 204 biosConfig.getBIOSTable(static_cast<pldm_bios_table_types>(tableType)); 205 if (!table) 206 { 207 return ccOnlyResponse(request, PLDM_BIOS_TABLE_UNAVAILABLE); 208 } 209 210 Response response(sizeof(pldm_msg_hdr) + 211 PLDM_GET_BIOS_TABLE_MIN_RESP_BYTES + table->size()); 212 auto responsePtr = reinterpret_cast<pldm_msg*>(response.data()); 213 214 rc = encode_get_bios_table_resp( 215 request->hdr.instance_id, PLDM_SUCCESS, 0 /* nxtTransferHandle */, 216 PLDM_START_AND_END, table->data(), response.size(), responsePtr); 217 if (rc != PLDM_SUCCESS) 218 { 219 return ccOnlyResponse(request, rc); 220 } 221 222 return response; 223 } 224 225 Response Handler::getBIOSAttributeCurrentValueByHandle(const pldm_msg* request, 226 size_t payloadLength) 227 { 228 uint32_t transferHandle; 229 uint8_t transferOpFlag; 230 uint16_t attributeHandle; 231 232 auto rc = decode_get_bios_attribute_current_value_by_handle_req( 233 request, payloadLength, &transferHandle, &transferOpFlag, 234 &attributeHandle); 235 if (rc != PLDM_SUCCESS) 236 { 237 return ccOnlyResponse(request, rc); 238 } 239 240 auto table = biosConfig.getBIOSTable(PLDM_BIOS_ATTR_VAL_TABLE); 241 if (!table) 242 { 243 return ccOnlyResponse(request, PLDM_BIOS_TABLE_UNAVAILABLE); 244 } 245 246 auto entry = pldm_bios_table_attr_value_find_by_handle( 247 table->data(), table->size(), attributeHandle); 248 if (entry == nullptr) 249 { 250 return ccOnlyResponse(request, PLDM_INVALID_BIOS_ATTR_HANDLE); 251 } 252 253 auto entryLength = pldm_bios_table_attr_value_entry_length(entry); 254 Response response(sizeof(pldm_msg_hdr) + 255 PLDM_GET_BIOS_ATTR_CURR_VAL_BY_HANDLE_MIN_RESP_BYTES + 256 entryLength, 257 0); 258 auto responsePtr = reinterpret_cast<pldm_msg*>(response.data()); 259 rc = encode_get_bios_current_value_by_handle_resp( 260 request->hdr.instance_id, PLDM_SUCCESS, 0, PLDM_START_AND_END, 261 reinterpret_cast<const uint8_t*>(entry), entryLength, responsePtr); 262 if (rc != PLDM_SUCCESS) 263 { 264 return ccOnlyResponse(request, rc); 265 } 266 267 return response; 268 } 269 270 Response Handler::setBIOSAttributeCurrentValue(const pldm_msg* request, 271 size_t payloadLength) 272 { 273 uint32_t transferHandle; 274 uint8_t transferOpFlag; 275 variable_field attributeField; 276 277 auto rc = decode_set_bios_attribute_current_value_req( 278 request, payloadLength, &transferHandle, &transferOpFlag, 279 &attributeField); 280 if (rc != PLDM_SUCCESS) 281 { 282 return ccOnlyResponse(request, rc); 283 } 284 285 rc = biosConfig.setAttrValue(attributeField.ptr, attributeField.length); 286 287 Response response( 288 sizeof(pldm_msg_hdr) + PLDM_SET_BIOS_ATTR_CURR_VAL_RESP_BYTES, 0); 289 auto responsePtr = reinterpret_cast<pldm_msg*>(response.data()); 290 291 encode_set_bios_attribute_current_value_resp(request->hdr.instance_id, rc, 292 0, responsePtr); 293 294 return response; 295 } 296 297 } // namespace bios 298 } // namespace responder 299 } // namespace pldm 300