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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/EMpCallBin.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/EMpCallBin.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)
;
; 13 5/09/12 6:38p Fredericko
; Fix for possible Tcm hang issues during reboot cycles.
;
; 12 1/20/12 9:13p Fredericko
; Added code to work around RTC issue when using legacy IO support.
;
; 11 4/22/11 8:53p Fredericko
; Token to enable stack workaround for binaries that don't return
; properly.
;
; 10 3/29/11 1:13p 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
;
; 9 3/28/11 2:22p 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
;
; 8 5/19/10 5:38p Fredericko
; Included File Header
; Included File Revision History
; Updated AMI Function Headers
; Code Beautification
; EIP 37653
;
; 7 4/16/10 10:36a Fredericko
; Function Headers updated
;
; 6 3/23/10 9:21p Fredericko
;
; 5 3/23/10 6:56p Fredericko
;
; 4 3/19/10 4:27p Fredericko
; Modified the way Driver calls into legacy TCG Binary.
;
; 3 6/02/09 1:12p Fredericko
;
; 2 5/18/09 6:04p Fredericko
;
; 1 5/18/09 6:03p Fredericko
; Initial check-in for EMpCallBin.asm for CTPM support infrastructure
;**********************************************************************
;<AMI_FHDR_START>
;
; Name: EMpCallBin.asm
;
; Description:
; Contains functions for legacy TCG calls in 32 bit Binaries
;
;<AMI_FHDR_END>
;**********************************************************************
.code
INCLUDE token.equ
;Global variable for MpLoc
public MpLoc
MpLoc label dword
FWORD ?
public TPMRTCSave
TPMRTCSave label dword
WORD ?
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 rax
push rcx
push rdx
mov dword ptr [MpLoc],ecx
mov word ptr [MpLoc + 4],dx
pop rdx
pop rcx
pop rax
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 rbp
push rax
push rcx
push rdx
mov rbp,rsp
cmp rcx, 04h
jnz Empty_Buff
MOV rsi, rdx
Empty_Buff:
mov rax, rcx
push rcx
mov rcx, offset next
IF MKF_Stack_Work_Around
mov dword ptr [IP_Offset], ecx
ENDIF
IF MKF_PMBASE_RTC_WKAround
push rax
push rdx
mov dx, MKF_PM_BASE_ADDRESS
in ax, dx
mov word ptr [TPMRTCSave],ax
pop rdx
pop rax
ENDIF
pop rcx
call fword ptr [MpLoc]
IF MKF_Stack_Work_Around
db 0eah
IP_Offset:
dd 0
dw 038h
ENDIF
next:
IF MKF_PMBASE_RTC_WKAround
push rax
push rdx
mov dx,MKF_PM_BASE_ADDRESS
in ax, dx
test ax, dx
jz RtcNotSet
mov ax, word ptr [TPMRTCSave]
and ax,0FBFEh
or ax,0400h
out dx, ax
RtcNotSet:
pop rdx
pop rax
ENDIF
mov rsp,rbp
pop rdx
pop rcx
pop rax
pop rbp
ret
TpmDxeCallMPDriver ENDP
TcmIoDelay proc
push rax
mov al, 80h
out 080h, al
in al, 080h
pop rax
ret
TcmIoDelay 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 rax
push rcx
push rdx
push rsi
cmp rcx, 04h
jnz Empty_Buff
MOV rsi, rdx
Empty_Buff:
mov rax, rcx
call TcmIoDelay
call fword ptr [MpLoc]
call TcmIoDelay
pop rsi
pop rdx
pop rcx
pop rax
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
|
