| 1 | ␊ |
| 2 | ␊ |
| 3 | #include "SMBIOS.h"␊ |
| 4 | #include "Platform.h"␊ |
| 5 | #include "boot.h"␊ |
| 6 | ␊ |
| 7 | static const char * const SMTAG = "_SM_";␊ |
| 8 | static const char* const DMITAG= "_DMI_";␊ |
| 9 | static struct SMBEntryPoint *getAddressOfSmbiosTable(void);␊ |
| 10 | ␊ |
| 11 | static struct SMBEntryPoint *getAddressOfSmbiosTable(void)␊ |
| 12 | {␊ |
| 13 | ␉struct SMBEntryPoint␉*smbios;␊ |
| 14 | ␉/* ␊ |
| 15 | ␉ * The logic is to start at 0xf0000 and end at 0xfffff iterating 16 bytes at a time looking␊ |
| 16 | ␉ * for the SMBIOS entry-point structure anchor (literal ASCII "_SM_").␊ |
| 17 | ␉ */␊ |
| 18 | ␉smbios = (struct SMBEntryPoint*) SMBIOS_RANGE_START;␊ |
| 19 | ␉while (smbios <= (struct SMBEntryPoint *)SMBIOS_RANGE_END)␊ |
| 20 | ␉{␊ |
| 21 | ␉␉if (COMPARE_DWORD(smbios->anchor, SMTAG) && ␊ |
| 22 | ␉␉␉COMPARE_DWORD(smbios->dmi.anchor, DMITAG) &&␊ |
| 23 | ␉␉␉smbios->dmi.anchor[4]==DMITAG[4] &&␊ |
| 24 | ␉␉␉checksum8(smbios, sizeof(struct SMBEntryPoint)) == 0)␊ |
| 25 | ␉ {␉␉␉␊ |
| 26 | ␉␉␉return ((void*)smbios);␊ |
| 27 | ␉ }␊ |
| 28 | ␉␉smbios = (struct SMBEntryPoint*) ( ((char*) smbios) + 16 );␊ |
| 29 | ␉}␊ |
| 30 | ␉printf("Error: Could not find original SMBIOS !!\n");␊ |
| 31 | ␉pause();␊ |
| 32 | ␉return NULL;␊ |
| 33 | }␊ |
| 34 | ␊ |
| 35 | struct SMBEntryPoint *getSmbiosOriginal()␊ |
| 36 | { ␉␊ |
| 37 | static struct SMBEntryPoint *orig = NULL; // cached␊ |
| 38 | ␊ |
| 39 | if (orig == NULL)␊ |
| 40 | ␉{␊ |
| 41 | ␉␉orig = getAddressOfSmbiosTable();␉␉␊ |
| 42 | ␉␉␊ |
| 43 | ␉␉if (orig)␊ |
| 44 | ␉␉{␊ |
| 45 | ␉␉␉verbose("Found System Management BIOS (SMBIOS) table\n");␉␉␉␊ |
| 46 | ␉␉}␊ |
| 47 | ␊ |
| 48 | }␊ |
| 49 | return orig; ␊ |
| 50 | }␊ |
| 51 | ␊ |
| 52 | /* get UUID or product Name from original SMBIOS, stripped version of kabyl's readSMBIOSInfo */␊ |
| 53 | int readSMBIOS(int value)␊ |
| 54 | {␉␉␉␊ |
| 55 | ␉␊ |
| 56 | ␉SMBEntryPoint *eps = getSmbiosOriginal();␊ |
| 57 | ␉if (eps == NULL) return 0;␊ |
| 58 | ␉␊ |
| 59 | ␉uint8_t *structPtr = (uint8_t *)eps->dmi.tableAddress;␊ |
| 60 | ␉SMBStructHeader *structHeader = (SMBStructHeader *)structPtr;␊ |
| 61 | ␉␊ |
| 62 | ␉for (;((eps->dmi.tableAddress + eps->dmi.tableLength) > ((uint32_t)(uint8_t *)structHeader + sizeof(SMBStructHeader)));)␊ |
| 63 | ␉{␊ |
| 64 | ␉␉switch (structHeader->type)␊ |
| 65 | ␉␉{␉␉␉␉␊ |
| 66 | ␉␉␉case kSMBTypeSystemInformation: ␊ |
| 67 | ␉␉␉{␊ |
| 68 | ␉␉␉␉switch (value) {␊ |
| 69 | ␉␉␉␉␉case theUUID:␊ |
| 70 | ␉␉␉␉␉␉Platform->UUID = ((SMBSystemInformation *)structHeader)->uuid;␊ |
| 71 | ␉␉␉␉␉␉return 1;␊ |
| 72 | ␉␉␉␉␉␉break;␊ |
| 73 | ␉␉␉␉␉case thePlatformName:␊ |
| 74 | ␉␉␉␉␉{␊ |
| 75 | ␉␉␉␉␉␉uint8_t *stringPtr = (uint8_t *)structHeader + structHeader->length;␊ |
| 76 | ␉␉␉␉␉␉uint8_t field = ((SMBSystemInformation *)structHeader)->productName;␊ |
| 77 | ␉␉␉␉␉␉␊ |
| 78 | ␉␉␉␉␉␉if (!field)␊ |
| 79 | ␉␉␉␉␉␉␉return 0;␊ |
| 80 | ␉␉␉␉␉␉␊ |
| 81 | ␉␉␉␉␉␉for (field--; field != 0 && strlen((char *)stringPtr) > 0; ␊ |
| 82 | ␉␉␉␉␉␉␉ field--, stringPtr = (uint8_t *)((uint32_t)stringPtr + strlen((char *)stringPtr) + 1));␊ |
| 83 | ␉␉␉␉␉␉␊ |
| 84 | ␉␉␉␉␉␉//DBG("original SMBIOS Product name: %s\n",(char *)stringPtr);␊ |
| 85 | ␉␉␉␉␉␉gPlatformName = (char *)stringPtr;␊ |
| 86 | ␉␉␉␉␉␉if (gPlatformName) return 1;␊ |
| 87 | ␉␉␉␉␉␉break;␊ |
| 88 | ␉␉␉␉␉}␊ |
| 89 | ␉␉␉␉␉default:␊ |
| 90 | ␉␉␉␉␉␉break;␊ |
| 91 | ␉␉␉␉}␉␉␉␉␊ |
| 92 | ␉␉␉␉␊ |
| 93 | ␉␉␉␉break;␉␊ |
| 94 | ␉␉␉}␊ |
| 95 | ␉␉␉case kSMBTypeBaseBoard:␊ |
| 96 | {␊ |
| 97 | ␉␉␉␉switch (value) {␊ |
| 98 | ␉␉␉␉␉case theProducBoard:␊ |
| 99 | ␉␉␉␉␉{␊ |
| 100 | ␉␉␉␉␉␉uint8_t *stringPtr = (uint8_t *)structHeader + structHeader->length;␊ |
| 101 | ␉␉␉␉␉␉uint8_t field = ((SMBBaseBoard *)structHeader)->product;␊ |
| 102 | ␉␉␉␉␉␉␊ |
| 103 | ␉␉␉␉␉␉if (!field)␊ |
| 104 | ␉␉␉␉␉␉␉return 0;␊ |
| 105 | ␉␉␉␉␉␉␊ |
| 106 | ␉␉␉␉␉␉for (field--; field != 0 && strlen((char *)stringPtr) > 0; ␊ |
| 107 | ␉␉␉␉␉␉␉ field--, stringPtr = (uint8_t *)((uint32_t)stringPtr + strlen((char *)stringPtr) + 1));␊ |
| 108 | ␉␉␉␉␉␉␊ |
| 109 | ␉␉␉␉␉␉gboardproduct = (char *)stringPtr;␊ |
| 110 | ␉␉␉␉␉␉if (gboardproduct) return 1;␊ |
| 111 | ␉␉␉␉␉␉break;␊ |
| 112 | ␉␉␉␉␉}␊ |
| 113 | ␉␉␉␉␉default:␊ |
| 114 | ␉␉␉␉␉␉break;␊ |
| 115 | ␉␉␉␉}␊ |
| 116 | ␉␉␉␉break;␊ |
| 117 | }␊ |
| 118 | ␉␉␉default:␊ |
| 119 | ␉␉␉␉break;␊ |
| 120 | ␉␉␉␉␊ |
| 121 | ␉␉}␊ |
| 122 | ␉␉␊ |
| 123 | ␉␉structPtr = (uint8_t *)((uint32_t)structHeader + structHeader->length);␊ |
| 124 | ␉␉for (; ((uint16_t *)structPtr)[0] != 0; structPtr++);␊ |
| 125 | ␉␉␊ |
| 126 | ␉␉if (((uint16_t *)structPtr)[0] == 0)␊ |
| 127 | ␉␉␉structPtr += 2;␊ |
| 128 | ␉␉␊ |
| 129 | ␉␉structHeader = (SMBStructHeader *)structPtr;␊ |
| 130 | ␉}␉␊ |
| 131 | ␉return 0;␊ |
| 132 | } |
