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|
;/**
; * @file
; *
; * Agesa library 64bit
; *
; * Contains AMD AGESA Library
; *
; * @xrefitem bom "File Content Label" "Release Content"
; * @e project: AGESA
; * @e sub-project: Lib
; * @e \$Revision: 17071 $ @e \$Date: 2009-07-30 10:13:11 -0700 (Thu, 30 Jul 2009) $
; */
;*****************************************************************************
;
; Copyright (c) 2011, Advanced Micro Devices, Inc.
; All rights reserved.
;
; Redistribution and use in source and binary forms, with or without
; modification, are permitted provided that the following conditions are met:
; * Redistributions of source code must retain the above copyright
; notice, this list of conditions and the following disclaimer.
; * Redistributions in binary form must reproduce the above copyright
; notice, this list of conditions and the following disclaimer in the
; documentation and/or other materials provided with the distribution.
; * Neither the name of Advanced Micro Devices, Inc. nor the names of
; its contributors may be used to endorse or promote products derived
; from this software without specific prior written permission.
;
; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
; ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
; WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
; DISCLAIMED. IN NO EVENT SHALL ADVANCED MICRO DEVICES, INC. BE LIABLE FOR ANY
; DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
; (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
; ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
; SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
;
;*****************************************************************************
.code
;/*++
;/*---------------------------------------------------------------------------------------*/
;/**
; * Write IO byte
; *
; * @param[in] CX IO port address
; * @param[in] DL IO port Value
; */
PUBLIC WriteIo8
WriteIo8 PROC
mov al, dl
mov dx, cx
out dx, al
ret
WriteIo8 ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Write IO word
; *
; * @param[in] CX IO port address
; * @param[in] DX IO port Value
; */
PUBLIC WriteIo16
WriteIo16 PROC
mov ax, dx
mov dx, cx
out dx, ax
ret
WriteIo16 ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Write IO dword
; *
; * @param[in] CX IO port address
; * @param[in] EDX IO port Value
; */
PUBLIC WriteIo32
WriteIo32 PROC
mov eax, edx
mov dx, cx
out dx, eax
ret
WriteIo32 ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Read IO byte
; *
; * @param[in] CX IO port address
; * @retval AL IO port Value
; */
PUBLIC ReadIo8
ReadIo8 PROC
mov dx, cx
in al, dx
ret
ReadIo8 ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Read IO word
; *
; * @param[in] CX IO port address
; * @retval AX IO port Value
; */
PUBLIC ReadIo16
ReadIo16 PROC
mov dx, cx
in ax, dx
ret
ReadIo16 ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Read IO dword
; *
; * @param[in] CX IO port address
; * @retval EAX IO port Value
; */
PUBLIC ReadIo32
ReadIo32 PROC
mov dx, cx
in eax, dx
ret
ReadIo32 ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Read MSR
; *
; * @param[in] RCX MSR Address
; * @param[in] RDX Pointer to data
; * @param[in] R8D ConfigPtr (Optional)
; */
PUBLIC LibAmdMsrRead
LibAmdMsrRead PROC
push rsi
mov rsi, rdx
rdmsr
mov [rsi], eax
mov [rsi+4], edx
pop rsi
ret
LibAmdMsrRead ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Write MSR
; *
; * @param[in] RCX MSR Address
; * @param[in] RDX Pointer to data
; * @param[in] R8D ConfigPtr (Optional)
; */
PUBLIC LibAmdMsrWrite
LibAmdMsrWrite PROC
push rsi
mov rsi, rdx
mov eax, [rsi]
and rax, 0ffffffffh
mov edx, [rsi+4]
and rdx, 0ffffffffh
wrmsr
pop rsi
ret
LibAmdMsrWrite ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Read CPUID
; *
; * @param[in] RCX CPUID function
; * @param[in] RDX Pointer to CPUID_DATA to save cpuid data
; * @param[in] R8D ConfigPtr (Optional)
; */
PUBLIC LibAmdCpuidRead
LibAmdCpuidRead PROC
push rbx
push rsi
mov rsi, rdx
mov rax, rcx
cpuid
mov [rsi], eax
mov [rsi+4], ebx
mov [rsi+8], ecx
mov [rsi+12],edx
pop rsi
pop rbx
ret
LibAmdCpuidRead ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Read TSC
; *
; *
; * @retval RAX Time stamp counter value
; */
PUBLIC ReadTSC
ReadTSC PROC
rdtsc
and rax, 0ffffffffh
shl rdx, 32
or rax, rdx
ret
ReadTSC ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Read memory/MMIO byte
; *
; * @param[in] RCX - Memory Address
; * @retval Memory byte at given address
; */
PUBLIC Read64Mem8
Read64Mem8 PROC
xor rax, rax
mov al, [rcx]
ret
Read64Mem8 ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Read memory/MMIO word
; *
; * @param[in] RCX - Memory Address
; * @retval Memory word at given address
; */
PUBLIC Read64Mem16
Read64Mem16 PROC
xor rax, rax
mov ax, [rcx]
ret
Read64Mem16 ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Read memory/MMIO dword
; *
; * @param[in] RCX - Memory Address
; * @retval Memory dword at given address
; */
PUBLIC Read64Mem32
Read64Mem32 PROC
xor rax, rax
mov eax, [rcx]
ret
Read64Mem32 ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Write memory/MMIO byte
; *
; * @param[in] RCX Memory Address
; * @param[in] DL Value to write
; */
PUBLIC Write64Mem8
Write64Mem8 PROC
xor rax, rax
mov rax, rdx
mov [rcx], al
ret
Write64Mem8 ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Write memory/MMIO word
; *
; * @param[in] RCX Memory Address
; * @param[in] DX Value to write
; */
PUBLIC Write64Mem16
Write64Mem16 PROC
xor rax, rax
mov rax, rdx
mov [rcx], ax
ret
Write64Mem16 ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Write memory/MMIO dword
; *
; * @param[in] RCX Memory Address
; * @param[in] EDX Value to write
; */
PUBLIC Write64Mem32
Write64Mem32 PROC
xor rax, rax
mov rax, rdx
mov [rcx], eax
ret
Write64Mem32 ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Read various CPU registers
; *
; * @param[in] CL Register ID (0/4 - CR0/CR4, 10h/11h/12h/13h/17h - DR0/DR1/DR2/DR3/DR7)
; * @param[in] RDX Pointer to value
; */
PUBLIC LibAmdReadCpuReg
LibAmdReadCpuReg PROC
push rax
xor rax, rax
Reg00h:
cmp cl, 00h
jne Reg04h
mov rax, cr0
jmp RegRead
Reg04h:
cmp cl, 04h
jne Reg10h
mov rax, cr4
jmp RegRead
Reg10h:
cmp cl, 10h
jne Reg11h
mov rax, dr0
jmp RegRead
Reg11h:
cmp cl, 11h
jne Reg12h
mov rax, dr1
jmp RegRead
Reg12h:
cmp cl, 12h
jne Reg13h
mov rax, dr2
jmp RegRead
Reg13h:
cmp cl, 13h
jne Reg17h
mov rax, dr3
jmp RegRead
Reg17h:
cmp cl, 17h
jne RegRead
mov rax, dr7
RegRead:
mov [rdx], eax
pop rax
ret
LibAmdReadCpuReg ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Write various CPU registers
; *
; * @param[in] CL Register ID (0/4 - CR0/CR4, 10h/11h/12h/13h/17h - DR0/DR1/DR2/DR3/DR7)
; * @param[in] RDX Value to write
; */
PUBLIC LibAmdWriteCpuReg
LibAmdWriteCpuReg PROC
push rax
Reg00h:
cmp cl, 00h
jne Reg04h
mov rax, cr0
mov eax, edx
mov cr0, rax
jmp Done
Reg04h:
cmp cl, 04h
jne Reg10h
mov rax, cr4
mov eax, edx
mov cr4, rax
jmp Done
Reg10h:
cmp cl, 10h
jne Reg11h
mov rax, dr0
mov eax, edx
mov dr0, rax
jmp Done
Reg11h:
cmp cl, 11h
jne Reg12h
mov rax, dr1
mov eax, edx
mov dr1, rax
jmp Done
Reg12h:
cmp cl, 12h
jne Reg13h
mov rax, dr2
mov eax, edx
mov dr2, rax
jmp Done
Reg13h:
cmp cl, 13h
jne Reg17h
mov rax, dr3
mov eax, edx
mov dr3, rax
jmp Done
Reg17h:
cmp cl, 17h
jne Done
mov rax, dr7
mov eax, edx
mov dr7, rax
Done:
pop rax
ret
LibAmdWriteCpuReg ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Write back invalidate caches using wbinvd.
; *
; *
; *
; */
PUBLIC LibAmdWriteBackInvalidateCache
LibAmdWriteBackInvalidateCache PROC
wbinvd
ret
LibAmdWriteBackInvalidateCache ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Stop CPU
; *
; *
; *
; */
PUBLIC StopHere
StopHere PROC
@@:
jmp short @b
StopHere ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Enter debugger on SimNow
; *
; *
; *
; */
PUBLIC LibAmdSimNowEnterDebugger
LibAmdSimNowEnterDebugger PROC
pushfq
mov rax, 0BACCD00Bh ; Backdoor in SimNow
mov rbx, 2 ; Select breakpoint feature
cpuid
@@:
jmp short @b
popfq
ret
LibAmdSimNowEnterDebugger ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * IDS IO port write
; *
; * @param[in] ECX IO Port Address
; * @param[in] EDX Value to write
; * @param[in] R8D IDS flags
; *
; */
PUBLIC IdsOutPort
IdsOutPort PROC
push rbx
push rax
mov ebx, r8d
mov eax, edx
mov edx, ecx
out dx, eax
pop rax
pop rbx
ret
IdsOutPort ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Force breakpoint on HDT
; *
; *
; */
PUBLIC LibAmdHDTBreakPoint
LibAmdHDTBreakPoint PROC
push rbx
mov rcx, 0C001100Ah ;bit 0 = HDT redirect
mov rdi, 09C5A203Ah ;Password
rdmsr
and rax, 0ffffffffh
or rax, 1
wrmsr
mov rax, 0B2h ;Marker = B2
db 0F1h ;ICEBP
pop rbx
ret
LibAmdHDTBreakPoint ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Find the most right hand side non-zero bit with
; *
; * @param[in] ECX Value
; */
PUBLIC LibAmdBitScanForward
LibAmdBitScanForward PROC
bsf eax, ecx
jnz nonZeroSource
mov al,32
nonZeroSource:
ret
LibAmdBitScanForward ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Find the most left hand side non-zero bit.
; *
; * @param[in] ECX Value
; */
PUBLIC LibAmdBitScanReverse
LibAmdBitScanReverse PROC
bsr eax, ecx
jnz nonZeroSource
mov al,0FFh
nonZeroSource:
ret
LibAmdBitScanReverse ENDP
END
|