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|
;/**
; * @file
; *
; * Agesa library 32bit
; *
; * 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) 2012 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.
;
;*****************************************************************************
.586p
.xmm
.model flat
ASSUME FS:NOTHING
.code
;/*---------------------------------------------------------------------------------------*/
;/**
; * Write IO byte
; *
; * @param[in] Address IO port address
; * @param[in] Data IO port Value
; */
public WriteIo8
WriteIo8 PROC NEAR C USES DX AX Address:WORD, Data:Byte
mov dx, Address
mov al, Data
out dx, al
ret
WriteIo8 ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Write IO word
; *
; * @param[in] Address IO port address
; * @param[in] Data IO port Value
; */
public WriteIo16
WriteIo16 PROC NEAR C USES DX AX Address:WORD, Data:WORD
mov dx, Address
mov ax, Data
out dx, ax
ret
WriteIo16 ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Write IO dword
; *
; * @param[in] Address IO port address
; * @param[in] Data IO port Value
; */
public WriteIo32
WriteIo32 PROC NEAR C USES DX EAX Address:WORD, Data:DWORD
mov dx, Address
mov eax, Data
out dx, eax
ret
WriteIo32 ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Read IO byte
; *
; * @param[in] - IO port address
; * @retval IO port Value
; */
public ReadIo8
ReadIo8 PROC NEAR C USES DX Address:WORD
mov dx, Address
in al, dx
ret
ReadIo8 ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Read IO word
; *
; * @param[in] Address IO port address
; * @retval IO port Value
; */
public ReadIo16
ReadIo16 PROC NEAR C USES DX Address:WORD
mov dx, Address
in ax, dx
ret
ReadIo16 ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Read IO dword
; *
; * @param[in] Address IO port address
; * @retval IO port Value
; */
public ReadIo32
ReadIo32 PROC NEAR C USES DX Address:WORD
mov dx, Address
in eax, dx
ret
ReadIo32 ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Read MSR
; *
; * @param[in] Address MSR Address
; * @param[in] Data Pointer to data
; * @param[in] ConfigPtr (Optional)
; */
public LibAmdMsrRead
LibAmdMsrRead PROC NEAR C USES ECX ESI EDX Address:DWORD, Value:PTR, ConfigPtr:PTR
mov esi, ConfigPtr ;Dummy read to avoid compilation warning
mov ecx, Address
rdmsr
mov esi, Value
mov [esi], eax
mov [esi+4], edx
ret
LibAmdMsrRead ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Write MSR
; *
; * @param[in] Address MSR Address
; * @param[in] Data Pointer to data
; * @param[in] ConfigPtr (Optional)
; */
public LibAmdMsrWrite
LibAmdMsrWrite PROC NEAR C USES ECX ESI EDX Address:DWORD, Data:PTR, ConfigPtr:PTR
mov esi, ConfigPtr ;Dummy read to avoid compilation warning
mov ecx, Address
mov esi, Data
mov eax, [esi]
mov edx, [esi+4]
wrmsr
ret
LibAmdMsrWrite ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Read CPUID
; *
; * @param[in] Func CPUID function
; * @param[in] DATA Pointer to CPUID_DATA to save cpuid data
; * @param[in] ConfigPtr (Optional)
; */
public LibAmdCpuidRead
LibAmdCpuidRead PROC NEAR C Func:DWORD, DATA:PTR, ConfigPtr:PTR
pushad
mov esi, ConfigPtr ;Dummy read to avoid compilation warning
mov eax, Func
cpuid
mov esi, DATA
mov [esi], eax
mov [esi+4], ebx
mov [esi+8], ecx
mov [esi+12],edx
popad
ret
LibAmdCpuidRead ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Read TSC
; *
; *
; *
; */
public ReadTSC
ReadTSC PROC NEAR C
rdtsc
ret
ReadTSC ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Set FS_BASE
; *
; *
; *
; * @param[in] esi - Low Dword of physical address
; * @param[in] edi - High Dword of physical address
; */
SetFsBase PROC NEAR PUBLIC USES EAX EBX ECX EDX EDI
mov eax, ecx
mov ecx, 0C0010015h ; HWCR
rdmsr
mov ebx, eax
bts eax, 17 ; HWCR.Wrap32Dis
wrmsr
xchg edx, edi
mov eax, esi
mov esi, ebx
mov ecx, 0C0000100h ; FS_BASE
wrmsr
ret
SetFsBase ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Restore MSR0C001_0015
; *
; * @param[in] esi - Low Dword
; * @param[in] edi - High Dword
; */
RestoreHwcr PROC NEAR PUBLIC USES EAX ECX EDX
mov ecx, 0C0010015h
mov eax, esi
mov edx, edi
wrmsr
ret
RestoreHwcr ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Read memory/MMIO byte
; *
; * @param[in] Address - Memory Address
; * @retval Memory byte at given address
; */
Read64Mem8 PROC NEAR C PUBLIC USES EBX EDI ESI Address:QWORD
mov esi, DWORD PTR Address[0]
mov edi, DWORD PTR Address[4]
test edi, edi
jz AccesBelow4G
push fs
call SetFsBase
xor ebx, ebx
mov al, fs:[ebx]
call RestoreHwcr
pop fs
jmp Done
AccesBelow4G:
mov al, ds:[esi]
Done:
ret
Read64Mem8 ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Read memory/MMIO word
; *
; * @param[in] Address - Memory Address
; * @retval Memory word at given address
; */
Read64Mem16 PROC NEAR C PUBLIC USES EBX EDI ESI Address:QWORD
mov esi, DWORD PTR Address[0]
mov edi, DWORD PTR Address[4]
test edi, edi
jz AccesBelow4G
push fs
call SetFsBase
xor ebx, ebx
mov ax, fs:[ebx]
call RestoreHwcr
pop fs
jmp Done
AccesBelow4G:
mov ax, ds:[esi]
Done:
ret
Read64Mem16 ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Read memory/MMIO dword
; *
; * @param[in] Address - Memory Address
; * @retval Memory dword at given address
; */
Read64Mem32 PROC NEAR C PUBLIC USES EBX EDI ESI Address:QWORD
mov esi, DWORD PTR Address[0]
mov edi, DWORD PTR Address[4]
test edi, edi
jz AccesBelow4G
push fs
call SetFsBase
xor ebx, ebx
mov eax, fs:[ebx]
call RestoreHwcr
pop fs
jmp Done
AccesBelow4G:
mov eax, ds:[esi]
Done:
ret
Read64Mem32 ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Write memory/MMIO byte
; *
; * @param[in] Address - Memory Address
; * @param[in] Value - Value to write
; */
Write64Mem8 PROC NEAR C PUBLIC USES EBX EDI ESI Address:QWORD, Data:BYTE
mov esi, DWORD PTR Address[0]
mov edi, DWORD PTR Address[4]
test edi, edi
jz AccesBelow4G
push fs
call SetFsBase
xor ebx, ebx
mov al, Data
mov fs:[ebx], al
call RestoreHwcr
pop fs
jmp Done
AccesBelow4G:
mov al, Data
mov ds:[esi], al
Done:
ret
Write64Mem8 ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Write memory/MMIO word
; *
; * @param[in] Address - Memory Address
; * @param[in] Value - Value to write
; */
Write64Mem16 PROC NEAR C PUBLIC USES EBX EDI ESI Address:QWORD, Data:WORD
mov esi, DWORD PTR Address[0]
mov edi, DWORD PTR Address[4]
test edi, edi
jz AccesBelow4G
push fs
call SetFsBase
xor ebx, ebx
mov ax, Data
mov fs:[ebx], ax
call RestoreHwcr
pop fs
jmp Done
AccesBelow4G:
mov ax, Data
mov ds:[esi], ax
Done:
ret
Write64Mem16 ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Write memory/MMIO dword
; *
; * @param[in] Address - Memory Address
; * @param[in] Value - Value to write
; */
Write64Mem32 PROC NEAR C PUBLIC USES EBX EDI ESI Address:QWORD, Data:DWORD
mov esi, DWORD PTR Address[0]
mov edi, DWORD PTR Address[4]
test edi, edi
jz AccesBelow4G
push fs
call SetFsBase
xor ebx, ebx
mov eax, Data
mov fs:[ebx], eax
call RestoreHwcr
pop fs
jmp Done
AccesBelow4G:
mov eax, Data
mov ds:[esi], eax
Done:
ret
Write64Mem32 ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Read various CPU registers
; *
; * @param[in] Reg Register ID (0/4 - CR0/CR4, 10h/11h/12h/13h/17h - DR0/DR1/DR2/DR3/DR7)
; * @param[in] Value Value to write
; */
LibAmdReadCpuReg PROC NEAR C Reg:BYTE, Value:NEAR PTR DWORD
pushad
push ds
.if(Reg == 00h)
mov eax, cr0
.elseif(Reg == 04h)
mov eax, cr4
.elseif(Reg == 10h)
mov eax, dr0
.elseif(Reg == 11h)
mov eax, dr1
.elseif(Reg == 12h)
mov eax, dr2
.elseif(Reg == 13h)
mov eax, dr3
.elseif(Reg == 17h)
mov eax, dr7
.else
xor eax,eax
.endif
mov edi, Value
mov [edi], eax
pop ds
popad
ret
LibAmdReadCpuReg ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Write various CPU registers
; *
; * @param[in] Reg Register ID (0/4 - CR0/CR4, 10h/11h/12h/13h/17h - DR0/DR1/DR2/DR3/DR7)
; * @param[in] Value Value to write
; */
LibAmdWriteCpuReg PROC NEAR C Reg:BYTE, Value:DWORD
mov eax, Value
.if(Reg == 00h)
mov cr0, eax
.elseif(Reg == 4)
mov cr4, eax
.elseif(Reg == 10h)
mov dr0, eax
.elseif(Reg == 11h)
mov dr1, eax
.elseif(Reg == 12h)
mov dr2, eax
.elseif(Reg == 13h)
mov dr3, eax
.elseif(Reg == 17h)
mov dr7, eax
.endif
ret
LibAmdWriteCpuReg ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Write back invalidate caches using wbinvd.
; *
; *
; *
; */
PUBLIC LibAmdWriteBackInvalidateCache
LibAmdWriteBackInvalidateCache PROC NEAR C
wbinvd
ret
LibAmdWriteBackInvalidateCache ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Stop CPU
; *
; *
; *
; */
PUBLIC StopHere
StopHere PROC NEAR C
@@:
jmp short @b
StopHere ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Enter debugger on SimNow
; *
; *
; *
; */
PUBLIC LibAmdSimNowEnterDebugger
LibAmdSimNowEnterDebugger PROC NEAR C
pushad
mov eax, 0BACCD00Bh ; Backdoor in SimNow
mov ebx, 2 ; Select breakpoint feature
cpuid
@@:
jmp short @b
popad
ret
LibAmdSimNowEnterDebugger ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * IDS IO port write
; *
; * @param[in] Address IO Port Address
; * @param[in] Value Value to write
; * @param[in] Flag IDS flags
; *
; */
PUBLIC IdsOutPort
IdsOutPort PROC NEAR C Address:DWORD, Value:DWORD ,Flag:DWORD
push edx
push eax
push ebx
mov edx, Address
mov eax, Value
mov ebx, Flag
out dx, eax
pop ebx
pop eax
pop edx
ret
IdsOutPort ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Force breakpoint on HDT
; *
; *
; */
PUBLIC LibAmdHDTBreakPoint
LibAmdHDTBreakPoint PROC NEAR C
pushad
mov ecx, 0C001100Ah ;bit 0 = HDT redirect
mov edi, 09C5A203Ah ;Password
RDMSR ;
or al, 1 ;
WRMSR ;
mov al, 0B2h ;Marker = B2
db 0F1h ;ICEBP
popad
ret
LibAmdHDTBreakPoint ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Find the most right hand side non-zero bit with .
; *
; * @param[in] Value Value
; */
PUBLIC LibAmdBitScanForward
LibAmdBitScanForward PROC NEAR C Value:DWORD
mov eax, Value
bsf eax, Value
.if (Zero?)
mov al,32
.endif
ret
LibAmdBitScanForward ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Find the most left hand side non-zero bit.
; *
; * @param[in] Value Value
; */
PUBLIC LibAmdBitScanReverse
LibAmdBitScanReverse PROC NEAR C Value:DWORD
mov eax, Value
bsr eax, Value
.if (Zero?)
mov al,0FFh
.endif
ret
LibAmdBitScanReverse ENDP
;/*---------------------------------------------------------------------------------------*/
;/**
; * Flush specified number of cache line
; *
; * @param[in] Address Physical address to be flushed
; * @param[in] Count number of cachelines to be flushed
; */
PUBLIC LibAmdCLFlush
LibAmdCLFlush PROC NEAR C Address:QWORD, Count:BYTE
pushad
mov ecx, 0C0010015h ; HWCR
rdmsr
mov esi, eax
mov edi, edx
bts eax, 17 ; HWCR.Wrap32Dis
wrmsr
xor eax, eax
mov edx, DWORD PTR Address[4]
mov ecx, 0C0000100h ; FS_BASE
wrmsr
mov eax, DWORD PTR Address[0]
movzx ecx, Count
@@:
mfence
clflush fs:[eax]
mfence
add eax,64
loop @B
call RestoreHwcr
popad
ret
LibAmdCLFlush ENDP
END
|