diff options
Diffstat (limited to 'EDK/Foundation/Cpu/Pentium/CpuIA32Lib/x64/Cpu.asm')
| -rw-r--r-- | EDK/Foundation/Cpu/Pentium/CpuIA32Lib/x64/Cpu.asm | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/EDK/Foundation/Cpu/Pentium/CpuIA32Lib/x64/Cpu.asm b/EDK/Foundation/Cpu/Pentium/CpuIA32Lib/x64/Cpu.asm new file mode 100644 index 0000000..52cab40 --- /dev/null +++ b/EDK/Foundation/Cpu/Pentium/CpuIA32Lib/x64/Cpu.asm @@ -0,0 +1,215 @@ +TITLE Cpu.asm: Assembly code for the x64 resources + +;------------------------------------------------------------------------------ +;* +;* Copyright (c) 2005 - 2008, 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 + mov rax, cr0 + or rax, 060000000h + mov cr0, rax + wbinvd +@@: + ret +EfiDisableCache ENDP + +;------------------------------------------------------------------------------ +; VOID +; EfiEnableCache ( +; VOID +; ); +;------------------------------------------------------------------------------ +EfiEnableCache PROC PUBLIC + wbinvd + 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 |