diff options
| author | David Wei <david.wei@intel.com> | 2015-01-12 09:37:20 +0000 |
|---|---|---|
| committer | zwei4 <zwei4@Edk2> | 2015-01-12 09:37:20 +0000 |
| commit | 3cbfba02fef9dae07a041fdbf2e89611d72d6f90 (patch) | |
| tree | 0b3bf0783124d38a191e09736492c0141aa36c15 /Vlv2TbltDevicePkg/Library/CpuIA32Lib/EfiCpuVersion.c | |
| parent | 6f785cfcc304c48ec04e542ee429df95e7b51bc5 (diff) | |
| download | edk2-platforms-3cbfba02fef9dae07a041fdbf2e89611d72d6f90.tar.xz | |
Upload BSD-licensed Vlv2TbltDevicePkg and Vlv2DeviceRefCodePkg to
https://svn.code.sf.net/p/edk2/code/trunk/edk2/,
which are for MinnowBoard MAX open source project.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: David Wei <david.wei@intel.com>
Reviewed-by: Mike Wu <mike.wu@intel.com>
Reviewed-by: Hot Tian <hot.tian@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16599 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'Vlv2TbltDevicePkg/Library/CpuIA32Lib/EfiCpuVersion.c')
| -rw-r--r-- | Vlv2TbltDevicePkg/Library/CpuIA32Lib/EfiCpuVersion.c | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/Vlv2TbltDevicePkg/Library/CpuIA32Lib/EfiCpuVersion.c b/Vlv2TbltDevicePkg/Library/CpuIA32Lib/EfiCpuVersion.c new file mode 100644 index 0000000000..4d3f1e6982 --- /dev/null +++ b/Vlv2TbltDevicePkg/Library/CpuIA32Lib/EfiCpuVersion.c @@ -0,0 +1,75 @@ +/** @file
+
+ Copyright (c) 2004 - 2014, Intel Corporation. All rights reserved.<BR>
+
+ This program and the accompanying materials are licensed and made available under
+ the terms and conditions of the BSD License that accompanies this distribution.
+ The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php.
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+
+Module Name:
+
+
+ EfiCpuVersion.c
+
+Abstract:
+
+ Provide cpu version extract considering extended family & model ID.
+--*/
+
+#include <Library/CpuIA32.h>
+
+/**
+ Extract CPU detail version infomation
+
+ @param FamilyId FamilyId, including ExtendedFamilyId
+ @param Model Model, including ExtendedModel
+ @param SteppingId SteppingId
+ @param Processor Processor
+
+**/
+VOID
+EFIAPI
+EfiCpuVersion (
+ IN OUT UINT16 *FamilyId, OPTIONAL
+ IN OUT UINT8 *Model, OPTIONAL
+ IN OUT UINT8 *SteppingId, OPTIONAL
+ IN OUT UINT8 *Processor OPTIONAL
+ )
+
+{
+ EFI_CPUID_REGISTER Register;
+ UINT8 TempFamilyId;
+
+ EfiCpuid (EFI_CPUID_VERSION_INFO, &Register);
+
+ if (SteppingId != NULL) {
+ *SteppingId = (UINT8) (Register.RegEax & 0xF);
+ }
+
+ if (Processor != NULL) {
+ *Processor = (UINT8) ((Register.RegEax >> 12) & 0x3);
+ }
+
+ if (Model != NULL || FamilyId != NULL) {
+ TempFamilyId = (UINT8) ((Register.RegEax >> 8) & 0xF);
+
+ if (Model != NULL) {
+ *Model = (UINT8) ((Register.RegEax >> 4) & 0xF);
+ if (TempFamilyId == 0x6 || TempFamilyId == 0xF) {
+ *Model = (UINT8) (*Model | ((Register.RegEax >> 12) & 0xF0));
+ }
+ }
+
+ if (FamilyId != NULL) {
+ *FamilyId = TempFamilyId;
+ if (TempFamilyId == 0xF) {
+ *FamilyId = (UINT8 ) (*FamilyId + (UINT16) ((Register.RegEax >> 20) & 0xFF));
+ }
+ }
+ }
+}
|