| /** @file | |
| Null instance of CPU Library for IA32/X64 specific services. | |
| Copyright (c) 2024, Intel Corporation. All rights reserved.<BR> | |
| SPDX-License-Identifier: BSD-2-Clause-Patent | |
| **/ | |
| #include <Library/CpuLib.h> | |
| /** | |
| Initializes floating point units for requirement of UEFI specification. | |
| This function initializes floating-point control word to 0x027F (all exceptions | |
| masked,double-precision, round-to-nearest) and multimedia-extensions control word | |
| (if supported) to 0x1F80 (all exceptions masked, round-to-nearest, flush to zero | |
| for masked underflow). | |
| **/ | |
| VOID | |
| EFIAPI | |
| InitializeFloatingPointUnits ( | |
| VOID | |
| ) | |
| { | |
| } | |
| /** | |
| Determine if the standard CPU signature is "AuthenticAMD". | |
| @retval TRUE The CPU signature matches. | |
| @retval FALSE The CPU signature does not match. | |
| **/ | |
| BOOLEAN | |
| EFIAPI | |
| StandardSignatureIsAuthenticAMD ( | |
| VOID | |
| ) | |
| { | |
| return FALSE; | |
| } | |
| /** | |
| Return the 32bit CPU family and model value. | |
| @return CPUID[01h].EAX with Processor Type and Stepping ID cleared. | |
| **/ | |
| UINT32 | |
| EFIAPI | |
| GetCpuFamilyModel ( | |
| VOID | |
| ) | |
| { | |
| return 0; | |
| } | |
| /** | |
| Return the CPU stepping ID. | |
| @return CPU stepping ID value in CPUID[01h].EAX. | |
| **/ | |
| UINT8 | |
| EFIAPI | |
| GetCpuSteppingId ( | |
| VOID | |
| ) | |
| { | |
| return 0; | |
| } |