diff options
| author | Ni, Ray <ray.ni@intel.com> | 2021-10-19 14:42:21 +0800 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2021-11-10 04:28:08 +0000 |
| commit | f826b20811ba6b0a9dbe44ff703b85c2def267df (patch) | |
| tree | e4ef9067ca7fcd4a33f816b79ec8e911d2a1e57a /UefiCpuPkg/Include | |
| parent | a7b35aae13b2d69b9be68874f275f511b1367a5e (diff) | |
| download | edk2-f826b20811ba6b0a9dbe44ff703b85c2def267df.tar.gz edk2-f826b20811ba6b0a9dbe44ff703b85c2def267df.tar.bz2 edk2-f826b20811ba6b0a9dbe44ff703b85c2def267df.zip | |
UefiCpuPkg/UefiCpuLib: Add GetCpuFamilyModel and GetCpuSteppingId
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3698
Lots of code relies on CPU Family/Model/Stepping for different logics.
The change adds two APIs for such needs.
Signed-off-by: Ray Ni <ray.ni@intel.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Diffstat (limited to 'UefiCpuPkg/Include')
| -rw-r--r-- | UefiCpuPkg/Include/Library/UefiCpuLib.h | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/UefiCpuPkg/Include/Library/UefiCpuLib.h b/UefiCpuPkg/Include/Library/UefiCpuLib.h index 5326e72463..092c1d2116 100644 --- a/UefiCpuPkg/Include/Library/UefiCpuLib.h +++ b/UefiCpuPkg/Include/Library/UefiCpuLib.h @@ -4,7 +4,7 @@ This library class defines some routines that are generic for IA32 family CPU
to be UEFI specification compliant.
- Copyright (c) 2009, Intel Corporation. All rights reserved.<BR>
+ Copyright (c) 2009 - 2021, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2020, AMD Inc. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
@@ -43,4 +43,25 @@ StandardSignatureIsAuthenticAMD ( VOID
);
+/**
+ Return the 32bit CPU family and model value.
+
+ @return CPUID[01h].EAX with Processor Type and Stepping ID cleared.
+**/
+UINT32
+EFIAPI
+GetCpuFamilyModel (
+ VOID
+ );
+
+/**
+ Return the CPU stepping ID.
+ @return CPU stepping ID value in CPUID[01h].EAX.
+**/
+UINT8
+EFIAPI
+GetCpuSteppingId (
+ VOID
+ );
+
#endif
|