summaryrefslogtreecommitdiff
path: root/EDK/Foundation/Cpu/Pentium/CpuIA32Lib/EfiCpuVersion.c
diff options
context:
space:
mode:
authorraywu <raywu0301@gmail.com>2018-06-15 00:00:50 +0800
committerraywu <raywu0301@gmail.com>2018-06-15 00:00:50 +0800
commitb7c51c9cf4864df6aabb99a1ae843becd577237c (patch)
treeeebe9b0d0ca03062955223097e57da84dd618b9a /EDK/Foundation/Cpu/Pentium/CpuIA32Lib/EfiCpuVersion.c
downloadzprj-b7c51c9cf4864df6aabb99a1ae843becd577237c.tar.xz
init. 1AQQW051HEADmaster
Diffstat (limited to 'EDK/Foundation/Cpu/Pentium/CpuIA32Lib/EfiCpuVersion.c')
-rw-r--r--EDK/Foundation/Cpu/Pentium/CpuIA32Lib/EfiCpuVersion.c73
1 files changed, 73 insertions, 0 deletions
diff --git a/EDK/Foundation/Cpu/Pentium/CpuIA32Lib/EfiCpuVersion.c b/EDK/Foundation/Cpu/Pentium/CpuIA32Lib/EfiCpuVersion.c
new file mode 100644
index 0000000..eea033b
--- /dev/null
+++ b/EDK/Foundation/Cpu/Pentium/CpuIA32Lib/EfiCpuVersion.c
@@ -0,0 +1,73 @@
+/*++
+
+Copyright (c) 2004 - 2006, Intel Corporation
+All rights reserved. This program and the accompanying materials
+are licensed and made available under the terms and conditions of the BSD License
+which 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 "CpuIA32.h"
+
+VOID
+EfiCpuVersion (
+ IN OUT UINT16 *FamilyId, OPTIONAL
+ IN OUT UINT8 *Model, OPTIONAL
+ IN OUT UINT8 *SteppingId, OPTIONAL
+ IN OUT UINT8 *Processor OPTIONAL
+ )
+/*++
+
+Routine Description:
+ Extract CPU detail version infomation
+
+Arguments:
+ FamilyId - FamilyId, including ExtendedFamilyId
+ Model - Model, including ExtendedModel
+ SteppingId - SteppingId
+ Processor - Processor
+
+--*/
+{
+ 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 |= (Register.RegEax >> 12) & 0xF0;
+ }
+ }
+
+ if (FamilyId != NULL) {
+ *FamilyId = TempFamilyId;
+ if (TempFamilyId == 0xF) {
+ *FamilyId = *FamilyId + (UINT16) ((Register.RegEax >> 20) & 0xFF);
+ }
+ }
+ }
+}