diff options
Diffstat (limited to 'EdkCompatibilityPkg/Foundation/Cpu/Pentium/CpuIA32Lib/IA32/CpuIA32.c')
| -rw-r--r-- | EdkCompatibilityPkg/Foundation/Cpu/Pentium/CpuIA32Lib/IA32/CpuIA32.c | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/EdkCompatibilityPkg/Foundation/Cpu/Pentium/CpuIA32Lib/IA32/CpuIA32.c b/EdkCompatibilityPkg/Foundation/Cpu/Pentium/CpuIA32Lib/IA32/CpuIA32.c new file mode 100644 index 0000000000..4956179bab --- /dev/null +++ b/EdkCompatibilityPkg/Foundation/Cpu/Pentium/CpuIA32Lib/IA32/CpuIA32.c @@ -0,0 +1,179 @@ +/*++
+
+Copyright (c) 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:
+
+ CpuIA32.c
+
+Abstract:
+
+--*/
+
+#include "CpuIA32.h"
+
+VOID
+EfiHalt (VOID)
+{
+ __asm {
+ hlt
+ }
+}
+
+VOID
+EfiWbinvd (VOID)
+{
+ __asm {
+ wbinvd
+ }
+}
+
+VOID
+EfiInvd (VOID)
+{
+ __asm {
+ invd
+ }
+}
+
+VOID
+EfiCpuid (IN UINT32 RegisterInEax,
+ OUT EFI_CPUID_REGISTER *Reg OPTIONAL)
+{
+ __asm {
+ pushad
+
+ mov eax, RegisterInEax
+ cpuid
+ cmp Reg, 0
+ je _Exit
+ mov edi, DWORD PTR Reg
+
+ mov DWORD PTR [edi].RegEax, eax ; Reg->RegEax
+ mov DWORD PTR [edi].RegEbx, ebx ; Reg->RegEbx
+ mov DWORD PTR [edi].RegEcx, ecx ; Reg->RegEcx
+ mov DWORD PTR [edi].RegEdx, edx ; Reg->RegEdx
+
+_Exit:
+ popad
+ }
+}
+
+UINT64
+EfiReadMsr (IN UINT32 Index)
+{
+ __asm {
+ mov ecx, Index
+ rdmsr
+ }
+}
+
+VOID
+EfiWriteMsr (
+ IN UINT32 Index,
+ IN UINT64 Value
+ )
+{
+ __asm {
+ mov ecx, Index
+ mov eax, DWORD PTR Value[0]
+ mov edx, DWORD PTR Value[4]
+ wrmsr
+ }
+}
+
+UINT64
+EfiReadTsc (VOID)
+{
+ __asm {
+ rdtsc
+ }
+}
+
+VOID
+EfiDisableCache (VOID)
+{
+ __asm {
+ mov eax, cr0
+ bswap eax
+ and al, 60h
+ cmp al, 60h
+ je Exit
+ wbinvd
+ mov eax, cr0
+ or eax, 060000000h
+ mov cr0, eax
+Exit:
+ }
+}
+
+VOID
+EfiEnableCache (VOID)
+{
+ __asm {
+ invd
+ mov eax, cr0
+ and eax, 09fffffffh
+ mov cr0, eax
+ }
+}
+
+UINT32
+EfiGetEflags (
+ VOID
+ )
+{
+ __asm {
+ pushfd
+ pop eax
+ }
+}
+
+VOID
+EfiDisableInterrupts (VOID)
+{
+ __asm {
+ cli
+ }
+}
+
+VOID
+EfiEnableInterrupts (
+ VOID
+ )
+{
+ __asm {
+ sti
+ }
+}
+
+VOID
+EfiCpuidExt (
+ IN UINT32 RegisterInEax,
+ IN UINT32 CacheLevel,
+ OUT EFI_CPUID_REGISTER *Regs
+ )
+{
+ __asm {
+ pushad
+
+ mov eax, RegisterInEax
+ mov ecx, CacheLevel
+ cpuid
+ mov edi, DWORD PTR Regs
+
+ mov DWORD PTR [edi].RegEax, eax ; Reg->RegEax
+ mov DWORD PTR [edi].RegEbx, ebx ; Reg->RegEbx
+ mov DWORD PTR [edi].RegEcx, ecx ; Reg->RegEcx
+ mov DWORD PTR [edi].RegEdx, edx ; Reg->RegEdx
+
+ popad
+ }
+}
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