projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| 989322c3 | 1 | /** @file\r |
| 2 | Public header file for UEFI CPU library class.\r | |
| 3 | \r | |
| 4 | This library class defines some routines that are generic for IA32 family CPU\r | |
| 5 | to be UEFI specification compliant.\r | |
| 6 | \r | |
| 01a1c0fc | 7 | Copyright (c) 2009, Intel Corporation. All rights reserved.<BR>\r |
| df667535 | 8 | Copyright (c) 2020, AMD Inc. All rights reserved.<BR>\r |
| 0acd8697 | 9 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
| 989322c3 | 10 | \r |
| 11 | **/\r | |
| 12 | \r | |
| 13 | #ifndef __UEFI_CPU_LIB_H__\r | |
| 14 | #define __UEFI_CPU_LIB_H__\r | |
| 15 | \r | |
| 16 | \r | |
| 17 | \r | |
| 18 | /**\r | |
| 19 | Initializes floating point units for requirement of UEFI specification.\r | |
| 20 | \r | |
| 21 | This function initializes floating-point control word to 0x027F (all exceptions\r | |
| 22 | masked,double-precision, round-to-nearest) and multimedia-extensions control word\r | |
| 23 | (if supported) to 0x1F80 (all exceptions masked, round-to-nearest, flush to zero\r | |
| 24 | for masked underflow).\r | |
| 25 | \r | |
| 26 | **/\r | |
| 27 | VOID\r | |
| 28 | EFIAPI\r | |
| 29 | InitializeFloatingPointUnits (\r | |
| 30 | VOID\r | |
| 31 | );\r | |
| 32 | \r | |
| df667535 KG |
33 | /**\r |
| 34 | Determine if the standard CPU signature is "AuthenticAMD".\r | |
| 35 | \r | |
| 36 | @retval TRUE The CPU signature matches.\r | |
| 37 | @retval FALSE The CPU signature does not match.\r | |
| 38 | \r | |
| 39 | **/\r | |
| 40 | BOOLEAN\r | |
| 41 | EFIAPI\r | |
| 42 | StandardSignatureIsAuthenticAMD (\r | |
| 43 | VOID\r | |
| 44 | );\r | |
| 45 | \r | |
| 989322c3 | 46 | #endif\r |