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|
;**********************************************************************
;**********************************************************************
;** **
;** (C)Copyright 1985-2005, American Megatrends, Inc. **
;** **
;** All Rights Reserved. **
;** **
;** 6145-F Northbelt Pkwy, Norcross, GA 30071 **
;** **
;** Phone: (770)-246-8600 **
;** **
;**********************************************************************
;**********************************************************************
; $Header: /Alaska/SOURCE/Modules/TCG2/Common/TcgDxe/EMpCallBin32.asm 1 4/21/14 2:16p Fredericko $
;
; $Revision: 1 $
;
; $Date: 4/21/14 2:16p $
;*************************************************************************
;Revision History
; ----------------
; $Log: /Alaska/SOURCE/Modules/TCG2/Common/TcgDxe/EMpCallBin32.asm $
;
; 1 4/21/14 2:16p Fredericko
;
; 1 10/08/13 12:03p Fredericko
; Initial Check-In for Tpm-Next module
;
; 1 7/10/13 5:51p Fredericko
; [TAG] EIP120969
; [Category] New Feature
; [Description] TCG (TPM20)
;
; 4 4/27/11 3:03p Fredericko
; Changes for working around stack problems when calling into binaries
; that don't return properly.
;
; 3 3/29/11 1:15p Fredericko
;
; [TAG] EIP 54642
; [Category] Improvement
; [Description] 1. Checkin Files related to TCG function override
; 2. Include TCM and TPM auto detection
; [Files] Affects all TCG files
;
;
;**********************************************************************
;<AMI_FHDR_START>
;
; Name: EMpCallBin32.asm
;
; Description:
;
;
;<AMI_FHDR_END>
;**********************************************************************
.686
.model flat
.code
INCLUDE token.equ
;Global variable for MpLoc
public MpLoc
MpLoc label dword
FWORD ?
TPMTransmitEntryStruct STRUC
pbInBuf DD ? ;[IN] Pointer to input data for the data transfers to TPM
dwInLen DD ? ; [IN] Length of the input data record
pbOutBuf DD 0 ; [OUT] Pointer to output buffer for the data from the TPM
dwOutLen DD 0 ; [IN/OUT] DWORD to store the length info of the
; output data record.
TPMTransmitEntryStruct ENDS
;<AMI_PHDR_START>
;-----------------------------------------------------------------------------
;
; Procedure: Prepare2Thunkproc
;
; Description:
; Function to setup location of Mp Driver as a local variable
;
; Input:
; ecx - Location of MP Driver
; dx - Segment for MP Driver
;
; Output:
;
; Modified:
;
; Referrals:
;
; Notes:
;---------------------------------------------------------------------------
;<AMI_PHDR_END>
_Prepare2Thunkproc proc
push ebp
mov ebp, esp
pusha
mov ecx, dword ptr [ebp + 08h]
mov edx, dword ptr [ebp + 0ch]
mov dword ptr [MpLoc],ecx
mov word ptr [MpLoc + 4], dx
popa
pop ebp
ret
_Prepare2Thunkproc ENDP
;<AMI_PHDR_START>
;-----------------------------------------------------------------------------
;
; Procedure: TcgDxeCallMPDriver (TCM_support eq 0)
;
; Description:
; Makes a function call into MP Driver
;
; Input:
; rcx - Call type: 4-Buffer Transmission call
; rsi - Buffer to be tansmitted
;
; Output:
; rax - TCG return code
;
; Modified:
;
; Referrals:
;
; Notes:
;---------------------------------------------------------------------------
;<AMI_PHDR_END>
_TpmDxeCallMPDriver proc
push ebp
mov ebp, esp
pusha
mov ecx, dword ptr [ebp + 08h]
cmp ecx, 04h
jnz Empty_Buff
mov esi, dword ptr [ebp + 0ch]
Empty_Buff:
mov eax, ecx
call fword ptr [MpLoc]
IF MKF_Stack_Work_Around
pop ebp ;balance the stack after call
ENDIF
popa
pop ebp
ret
_TpmDxeCallMPDriver ENDP
;<AMI_PHDR_START>
;-----------------------------------------------------------------------------
;
; Procedure: TcgDxeCallMPDriver (TCM_support eq 1)
;
; Description:
; Makes a function call into MP Driver
;
; Input:
; rcx - Call type: 4-Buffer Transmission call
; rsi - Buffer to be tansmitted
;
; Output:
; rax - TCG return code
;
; Modified:
;
; Referrals:
;
; Notes:
;---------------------------------------------------------------------------
;<AMI_PHDR_END>
_TcmDxeCallMPDriver proc
push ebp
mov ebp, esp
pusha
mov ecx, dword ptr [ebp + 08h]
cmp ecx, 04h
jnz Empty_Buff
mov esi, dword ptr [ebp + 0ch]
Empty_Buff:
mov eax, ecx
call fword ptr [MpLoc]
popa
pop ebp
ret
_TcmDxeCallMPDriver ENDP
;<AMI_PHDR_START>
;-----------------------------------------------------------------------------
;
; Procedure: TcgThunk32
;
; Description:
; Go to compatibility mode for MP driver
;
; Input:
;
; Output:
;
; Modified:
;
; Referrals:
;
; Notes:
;---------------------------------------------------------------------------
;<AMI_PHDR_END>
_TcgThunk32 proc
_TcgThunk32 ENDP
;<AMI_PHDR_START>
;-----------------------------------------------------------------------------
;
; Procedure: TcgThunkSwitchback
;
; Description:
; Switch back to 64bit mode
;
; Input:
;
; Output:
;
; Modified:
;
; Referrals:
;
; Notes:
;---------------------------------------------------------------------------
;<AMI_PHDR_END>
_TcgThunkSwitchback proc
_TcgThunkSwitchback ENDP
END
|
