projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| 3cbfba02 DW |
1 | /** @file\r |
| 2 | \r | |
| 3 | Copyright (c) 2004 - 2014, Intel Corporation. All rights reserved.<BR>\r | |
| 4 | \r\r | |
| 5 | This program and the accompanying materials are licensed and made available under\r\r | |
| 6 | the terms and conditions of the BSD License that accompanies this distribution. \r\r | |
| 7 | The full text of the license may be found at \r\r | |
| 8 | http://opensource.org/licenses/bsd-license.php. \r\r | |
| 9 | \r\r | |
| 10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r\r | |
| 11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r\r | |
| 12 | \r\r | |
| 13 | \r | |
| 14 | Module Name:\r | |
| 15 | \r | |
| 16 | \r | |
| 17 | EfiCpuVersion.c\r | |
| 18 | \r | |
| 19 | Abstract:\r | |
| 20 | \r | |
| 21 | Provide cpu version extract considering extended family & model ID.\r | |
| 22 | --*/\r | |
| 23 | \r | |
| 24 | #include <Library/CpuIA32.h>\r | |
| 25 | \r | |
| 26 | /**\r | |
| 27 | Extract CPU detail version infomation\r | |
| 28 | \r | |
| 29 | @param FamilyId FamilyId, including ExtendedFamilyId\r | |
| 30 | @param Model Model, including ExtendedModel\r | |
| 31 | @param SteppingId SteppingId\r | |
| 32 | @param Processor Processor\r | |
| 33 | \r | |
| 34 | **/\r | |
| 35 | VOID\r | |
| 36 | EFIAPI\r | |
| 37 | EfiCpuVersion (\r | |
| 38 | IN OUT UINT16 *FamilyId, OPTIONAL\r | |
| 39 | IN OUT UINT8 *Model, OPTIONAL\r | |
| 40 | IN OUT UINT8 *SteppingId, OPTIONAL\r | |
| 41 | IN OUT UINT8 *Processor OPTIONAL\r | |
| 42 | )\r | |
| 43 | \r | |
| 44 | {\r | |
| 45 | EFI_CPUID_REGISTER Register;\r | |
| 46 | UINT8 TempFamilyId;\r | |
| 47 | \r | |
| 48 | EfiCpuid (EFI_CPUID_VERSION_INFO, &Register);\r | |
| 49 | \r | |
| 50 | if (SteppingId != NULL) {\r | |
| 51 | *SteppingId = (UINT8) (Register.RegEax & 0xF);\r | |
| 52 | }\r | |
| 53 | \r | |
| 54 | if (Processor != NULL) {\r | |
| 55 | *Processor = (UINT8) ((Register.RegEax >> 12) & 0x3);\r | |
| 56 | }\r | |
| 57 | \r | |
| 58 | if (Model != NULL || FamilyId != NULL) {\r | |
| 59 | TempFamilyId = (UINT8) ((Register.RegEax >> 8) & 0xF);\r | |
| 60 | \r | |
| 61 | if (Model != NULL) {\r | |
| 62 | *Model = (UINT8) ((Register.RegEax >> 4) & 0xF);\r | |
| 63 | if (TempFamilyId == 0x6 || TempFamilyId == 0xF) {\r | |
| 64 | *Model = (UINT8) (*Model | ((Register.RegEax >> 12) & 0xF0));\r | |
| 65 | }\r | |
| 66 | }\r | |
| 67 | \r | |
| 68 | if (FamilyId != NULL) {\r | |
| 69 | *FamilyId = TempFamilyId;\r | |
| 70 | if (TempFamilyId == 0xF) {\r | |
| 71 | *FamilyId = (UINT8 ) (*FamilyId + (UINT16) ((Register.RegEax >> 20) & 0xFF));\r | |
| 72 | }\r | |
| 73 | }\r | |
| 74 | }\r | |
| 75 | }\r |