diff options
Diffstat (limited to 'include/smbios.hpp')
| -rw-r--r-- | include/smbios.hpp | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/include/smbios.hpp b/include/smbios.hpp new file mode 100644 index 0000000..390ac9a --- /dev/null +++ b/include/smbios.hpp @@ -0,0 +1,208 @@ +/* +// Copyright (c) 2018 Intel Corporation +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. +*/ + +#pragma once +#include <map> + +static constexpr uint16_t mdrSmbiosSize = 32 * 1024; // 32K +static constexpr uint16_t mdrAcpiTableSize = 32 * 1024; // 32K +static constexpr uint16_t mdrMemMappingSize = 8 * 1024; // 8K +static constexpr uint16_t mdrScsiBootSize = 8 * 1024; // 8K +static constexpr uint16_t mdrNvmeSize = 1 * 1024; // 1K + +static constexpr uint16_t smbiosTableStorageSize = 0xffff; + +static constexpr uint8_t mdrVersion = 0x11; // MDR version 1.1 + +static constexpr const char *smbiosPath = "/etc/smbios"; +static constexpr const char *mdrType1File = "/etc/smbios/smbios1"; +static constexpr const char *mdrType2File = "/etc/smbios/smbios2"; +static constexpr const char *mdrAcpiFile = "/etc/smbios/acpi"; +static constexpr const char *mdrMemMapFile = "/etc/smbios/memmapping"; +static constexpr const char *mdrScsiBootFile = "/etc/smbios/scsiboot"; +static constexpr const char *mdrNvmeFile = "/etc/smbios/nvme"; + +typedef enum +{ + mdrNone = 0, + mdrSmbios = 1, + mdrAcpi = 2, + mdrMemMap = 3, + mdrScsiBoot = 4, + mdrNvme = 5, + maxMdrIndex = 6 +} MDRRegionIndex; + +typedef enum +{ + regionLockUnlocked = 0, + regionLockStrict, + regionLockPreemptable +} MDRLockType; + +struct MDRState +{ + uint8_t mdrVersion; + uint8_t regionId; + uint8_t valid; + uint8_t updateCount; + uint8_t lockPolicy; + uint16_t regionLength; + uint16_t regionUsed; + uint8_t crc8; +} __attribute__((packed)); + +struct ManagedDataRegion +{ + const char *flashName; + uint8_t *regionData; + uint16_t msTimeout; + struct MDRState state; + uint8_t sessionId; +} __attribute__((packed)); + +struct BIOSInfo +{ + uint8_t biosVersion; +}; + +static constexpr const char *dimmPath = + "/xyz/openbmc_project/inventory/system/chassis/motherboard/dimm"; + +static constexpr const char *cpuPath = + "/xyz/openbmc_project/inventory/system/chassis/motherboard/cpu"; + +static constexpr const char *systemPath = + "/xyz/openbmc_project/inventory/system/chassis/motherboard/bios"; + +typedef enum +{ + biosType = 0, + systemType = 1, + baseboardType = 2, + chassisType = 3, + processorsType = 4, + memoryControllerType = 5, + memoryModuleInformationType = 6, + cacheType = 7, + portConnectorType = 8, + systemSlots = 9, + onBoardDevicesType = 10, + oemStringsType = 11, + systemCconfigurationOptionsType = 12, + biosLanguageType = 13, + groupAssociatonsType = 14, + systemEventLogType = 15, + physicalMemoryArrayType = 16, + memoryDeviceType = 17, +} SmbiosType; + +static constexpr uint8_t separateLen = 2; +// To get the point of next smbios item +static inline uint8_t *smbiosNextPtr(uint8_t *smbiosDataIn) +{ + if (smbiosDataIn == nullptr) + { + return nullptr; + } + uint8_t *smbiosData = smbiosDataIn + *(smbiosDataIn + 1); + int len = 0; + while ((*smbiosData | *(smbiosData + 1)) != 0) + { + smbiosData++; + len++; + if (len >= mdrSmbiosSize) // To avoid endless loop + { + return nullptr; + } + } + return smbiosData + separateLen; +} + +// When first time run smbiosTypePtr, need to send the RegionS[].regionData +// to smbiosDataIn +static inline uint8_t *smbiosTypePtr(uint8_t *smbiosDataIn, uint8_t typeId) +{ + if (smbiosDataIn == nullptr) + { + return nullptr; + } + char *smbiosData = reinterpret_cast<char *>(smbiosDataIn); + while ((*smbiosData != '\0') || (*(smbiosData + 1) != '\0')) + { + if (*smbiosData != typeId) + { + uint32_t len = *(smbiosData + 1); + smbiosData += len; + while ((*smbiosData != '\0') || (*(smbiosData + 1) != '\0')) + { + smbiosData++; + len++; + if (len >= mdrSmbiosSize) // To avoid endless loop + { + return nullptr; + } + } + smbiosData += separateLen; + continue; + } + return reinterpret_cast<uint8_t *>(smbiosData); + } + return nullptr; +} + +static inline std::string positionToString(uint8_t positionNum, + uint8_t structLen, uint8_t *dataIn) +{ + if (dataIn == nullptr) + { + return ""; + } + char *target; + uint8_t stringLen = 0; + uint16_t limit = mdrSmbiosSize; // set a limit to avoid endless loop + + target = reinterpret_cast<char *>(dataIn + structLen); + for (uint8_t index = 1; index < positionNum; index++) + { + for (; *target != '\0'; target++) + { + limit--; + if (limit < 1) + { + return ""; + } + } + target++; + if (*target == '\0') + { + return ""; // 0x00 0x00 means end of the entry. + } + } + + std::string result = target; + return result; +} + +// Find the specific string in smbios item +static inline std::string seekString(uint8_t *smbiosDataIn, uint8_t stringOrder) +{ + if (smbiosDataIn == nullptr) + return ""; + uint8_t len = *(smbiosDataIn + 1); + + return positionToString(stringOrder, len, smbiosDataIn); +} |