projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| df667535 KG |
1 | /** @file\r |
| 2 | This library defines some routines that are generic for IA32 family CPU.\r | |
| 3 | \r | |
| 4 | The library routines are UEFI specification compliant.\r | |
| 5 | \r | |
| 6 | Copyright (c) 2020, AMD Inc. All rights reserved.<BR>\r | |
| 7 | SPDX-License-Identifier: BSD-2-Clause-Patent\r | |
| 8 | \r | |
| 9 | **/\r | |
| 10 | \r | |
| 11 | #include <Register/Intel/Cpuid.h>\r | |
| 12 | #include <Register/Amd/Cpuid.h>\r | |
| 13 | \r | |
| 14 | #include <Library/BaseLib.h>\r | |
| 15 | #include <Library/UefiCpuLib.h>\r | |
| 16 | \r | |
| 17 | /**\r | |
| 18 | Determine if the standard CPU signature is "AuthenticAMD".\r | |
| 19 | \r | |
| 20 | @retval TRUE The CPU signature matches.\r | |
| 21 | @retval FALSE The CPU signature does not match.\r | |
| 22 | \r | |
| 23 | **/\r | |
| 24 | BOOLEAN\r | |
| 25 | EFIAPI\r | |
| 26 | StandardSignatureIsAuthenticAMD (\r | |
| 27 | VOID\r | |
| 28 | )\r | |
| 29 | {\r | |
| 30 | UINT32 RegEbx;\r | |
| 31 | UINT32 RegEcx;\r | |
| 32 | UINT32 RegEdx;\r | |
| 33 | \r | |
| 34 | AsmCpuid (CPUID_SIGNATURE, NULL, &RegEbx, &RegEcx, &RegEdx);\r | |
| 35 | return (RegEbx == CPUID_SIGNATURE_AUTHENTIC_AMD_EBX &&\r | |
| 36 | RegEcx == CPUID_SIGNATURE_AUTHENTIC_AMD_ECX &&\r | |
| 37 | RegEdx == CPUID_SIGNATURE_AUTHENTIC_AMD_EDX);\r | |
| 38 | }\r |