| Prithvi Pai | 5af42bb | 2025-02-11 17:59:07 +0530 | [diff] [blame] | 1 | #include "tpm.hpp" |
| 2 | |
| 3 | #include "mdrv2.hpp" |
| 4 | |
| 5 | #include <fstream> |
| 6 | #include <iomanip> |
| 7 | #include <iostream> |
| 8 | #include <sstream> |
| 9 | |
| 10 | namespace phosphor |
| 11 | { |
| 12 | namespace smbios |
| 13 | { |
| 14 | |
| 15 | void Tpm::tpmInfoUpdate(uint8_t* smbiosTableStorage, |
| 16 | const std::string& motherboard) |
| 17 | { |
| 18 | storage = smbiosTableStorage; |
| 19 | motherboardPath = motherboard; |
| 20 | |
| 21 | uint8_t* dataIn = storage; |
| 22 | dataIn = getSMBIOSTypePtr(dataIn, tpmDeviceType); |
| 23 | if (dataIn == nullptr) |
| 24 | { |
| 25 | return; |
| 26 | } |
| 27 | for (uint8_t index = 0; index < tpmId; index++) |
| 28 | { |
| 29 | dataIn = smbiosNextPtr(dataIn); |
| 30 | if (dataIn == nullptr) |
| 31 | { |
| 32 | return; |
| 33 | } |
| 34 | dataIn = getSMBIOSTypePtr(dataIn, tpmDeviceType); |
| 35 | if (dataIn == nullptr) |
| 36 | { |
| 37 | return; |
| 38 | } |
| 39 | } |
| 40 | auto tpmInfo = reinterpret_cast<struct TPMInfo*>(dataIn); |
| 41 | |
| 42 | present(true); |
| 43 | purpose(softwareversion::VersionPurpose::Other); |
| 44 | tpmVendor(tpmInfo); |
| 45 | tpmFirmwareVersion(tpmInfo); |
| 46 | tpmDescription(tpmInfo->description, tpmInfo->length, dataIn); |
| 47 | if (!motherboardPath.empty()) |
| 48 | { |
| 49 | std::vector<std::tuple<std::string, std::string, std::string>> assocs; |
| 50 | assocs.emplace_back("chassis", "trusted_components", motherboardPath); |
| 51 | association::associations(assocs); |
| 52 | } |
| 53 | } |
| 54 | |
| 55 | void Tpm::tpmVendor(const struct TPMInfo* tpmInfo) |
| 56 | { |
| 57 | constexpr int vendorIdLength = 4; |
| 58 | // Specified as four ASCII characters, as defined by TCG Vendor ID |
| 59 | char vendorId[vendorIdLength + 1]; |
| 60 | int i; |
| 61 | for (i = 0; i < vendorIdLength && tpmInfo->vendor[i] != '\0'; i++) |
| 62 | { |
| 63 | if (std::isprint(tpmInfo->vendor[i])) |
| 64 | { |
| 65 | vendorId[i] = tpmInfo->vendor[i]; |
| 66 | } |
| 67 | else |
| 68 | { |
| 69 | vendorId[i] = '.'; |
| 70 | } |
| 71 | } |
| 72 | vendorId[i] = '\0'; |
| 73 | manufacturer(vendorId); |
| 74 | } |
| 75 | |
| 76 | void Tpm::tpmFirmwareVersion(const struct TPMInfo* tpmInfo) |
| 77 | { |
| 78 | std::stringstream stream; |
| 79 | |
| 80 | if (tpmInfo->specMajor == tpmMajorVerion1) |
| 81 | { |
| 82 | auto ver = reinterpret_cast<const struct TPMVersionSpec1*>( |
| 83 | &tpmInfo->firmwareVersion1); |
| 84 | stream << ver->revMajor << "." << ver->revMinor; |
| 85 | } |
| 86 | else if (tpmInfo->specMajor == tpmMajorVerion2) |
| 87 | { |
| 88 | auto ver = reinterpret_cast<const struct TPMVersionSpec2*>( |
| 89 | &tpmInfo->firmwareVersion1); |
| 90 | stream << ver->revMajor << "." << ver->revMinor; |
| 91 | } |
| 92 | version(stream.str()); |
| 93 | } |
| 94 | |
| 95 | void Tpm::tpmDescription(const uint8_t positionNum, const uint8_t structLen, |
| 96 | uint8_t* dataIn) |
| 97 | { |
| 98 | std::string result = positionToString(positionNum, structLen, dataIn); |
| 99 | prettyName(result); |
| 100 | } |
| 101 | } // namespace smbios |
| 102 | } // namespace phosphor |