diff options
Diffstat (limited to 'EdkCompatibilityPkg/Foundation/Cpu/Pentium/CpuIA32Lib/x64/Cpu.asm')
-rw-r--r-- | EdkCompatibilityPkg/Foundation/Cpu/Pentium/CpuIA32Lib/x64/Cpu.asm | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/EdkCompatibilityPkg/Foundation/Cpu/Pentium/CpuIA32Lib/x64/Cpu.asm b/EdkCompatibilityPkg/Foundation/Cpu/Pentium/CpuIA32Lib/x64/Cpu.asm new file mode 100644 index 0000000000..8e46f9b69f --- /dev/null +++ b/EdkCompatibilityPkg/Foundation/Cpu/Pentium/CpuIA32Lib/x64/Cpu.asm @@ -0,0 +1,215 @@ +TITLE Cpu.asm: Assembly code for the x64 resources
+
+;------------------------------------------------------------------------------
+;*
+;* Copyright (c) 2005 - 2007, 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:
+;*
+;* Cpu.asm
+;*
+;* Abstract:
+;*
+;------------------------------------------------------------------------------
+
+text SEGMENT
+
+
+;------------------------------------------------------------------------------
+; VOID
+; EfiHalt (
+; VOID
+; )
+;------------------------------------------------------------------------------
+EfiHalt PROC PUBLIC
+ hlt
+ ret
+EfiHalt ENDP
+
+
+;------------------------------------------------------------------------------
+; VOID
+; EfiWbinvd (
+; VOID
+; )
+;------------------------------------------------------------------------------
+EfiWbinvd PROC PUBLIC
+ wbinvd
+ ret
+EfiWbinvd ENDP
+
+
+;------------------------------------------------------------------------------
+; VOID
+; EfiInvd (
+; VOID
+; )
+;------------------------------------------------------------------------------
+EfiInvd PROC PUBLIC
+ invd
+ ret
+EfiInvd ENDP
+
+;------------------------------------------------------------------------------
+; VOID
+; EfiCpuid (
+; IN UINT32 RegisterInEax, // rcx
+; OUT EFI_CPUID_REGISTER *Reg OPTIONAL // rdx
+; )
+;------------------------------------------------------------------------------
+EfiCpuid PROC PUBLIC
+ push rbx
+
+ mov r8, rdx ; r8 = *Reg
+ mov rax, rcx ; RegisterInEax
+ cpuid
+ cmp r8, 0
+ je _Exit
+ mov [r8 + 0], eax ; Reg->RegEax
+ mov [r8 + 4], ebx ; Reg->RegEbx
+ mov [r8 + 8], ecx ; Reg->RegEcx
+ mov [r8 + 12], edx ; Reg->RegEdx
+
+_Exit:
+ pop rbx
+ ret
+EfiCpuid ENDP
+
+;------------------------------------------------------------------------------
+; UINT64
+; EfiReadMsr (
+; IN UINT32 Index, // rcx
+; )
+;------------------------------------------------------------------------------
+EfiReadMsr PROC PUBLIC
+ rdmsr
+ sal rdx, 32 ; edx:eax -> rax
+ or rax, rdx ; rax = edx:eax
+ ret
+EfiReadMsr ENDP
+
+;------------------------------------------------------------------------------
+; VOID
+; EfiWriteMsr (
+; IN UINT32 Index, // rcx
+; IN UINT64 Value // rdx
+; )
+;------------------------------------------------------------------------------
+EfiWriteMsr PROC PUBLIC
+ mov rax, rdx ; rdx = Value
+ sar rdx, 32 ; convert rdx to edx upper 32-bits
+ wrmsr ; wrmsr[ecx] result = edx:eax
+ ret
+EfiWriteMsr ENDP
+
+
+;------------------------------------------------------------------------------
+; UINT64
+; EfiReadTsc (
+; VOID
+; );
+;------------------------------------------------------------------------------
+EfiReadTsc PROC PUBLIC
+ rdtsc
+ shl rax, 32
+ shrd rax, rdx, 32
+ ret
+EfiReadTsc ENDP
+
+;------------------------------------------------------------------------------
+; VOID
+; EfiDisableCache (
+; VOID
+; );
+;------------------------------------------------------------------------------
+EfiDisableCache PROC PUBLIC
+; added a check to see if cache is already disabled. If it is, then skip.
+ mov rax, cr0
+ and rax, 060000000h
+ cmp rax, 0
+ jne @f
+ wbinvd
+ mov rax, cr0
+ or rax, 060000000h
+ mov cr0, rax
+@@:
+ ret
+EfiDisableCache ENDP
+
+;------------------------------------------------------------------------------
+; VOID
+; EfiEnableCache (
+; VOID
+; );
+;------------------------------------------------------------------------------
+EfiEnableCache PROC PUBLIC
+ invd
+ mov rax, cr0
+ and rax, 09fffffffh
+ mov cr0, rax
+ ret
+EfiEnableCache ENDP
+
+;------------------------------------------------------------------------------
+; UINTN
+; EfiGetEflags (
+; VOID
+; );
+;------------------------------------------------------------------------------
+EfiGetEflags PROC PUBLIC
+ pushfq
+ pop rax
+ ret
+EfiGetEflags ENDP
+
+;------------------------------------------------------------------------------
+; VOID
+; EfiDisableInterrupts (
+; VOID
+; );
+;------------------------------------------------------------------------------
+EfiDisableInterrupts PROC PUBLIC
+ cli
+ ret
+EfiDisableInterrupts ENDP
+
+;------------------------------------------------------------------------------
+; VOID
+; EfiEnableInterrupts (
+; VOID
+; );
+;------------------------------------------------------------------------------
+EfiEnableInterrupts PROC PUBLIC
+ sti
+ ret
+EfiEnableInterrupts ENDP
+;------------------------------------------------------------------------------
+; VOID
+; EfiCpuidExt (
+; IN UINT32 RegisterInEax,
+; IN UINT32 CacheLevel,
+; OUT EFI_CPUID_REGISTER *Regs
+; )
+;------------------------------------------------------------------------------
+EfiCpuidExt PROC PUBLIC
+ push rbx
+ mov rax, rcx ; rax = RegisterInEax
+ mov rcx, rdx ; rcx = CacheLevel
+
+ cpuid
+ mov [r8 + 0 ], eax ; Reg->RegEax
+ mov [r8 + 4 ], ebx ; Reg->RegEbx
+ mov [r8 + 8 ], ecx ; Reg->RegEcx
+ mov [r8 + 12], edx ; Reg->RegEdx
+
+ pop rbx
+ ret
+EfiCpuidExt ENDP
+END
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