New Award BIOS tool for performing SLIC Insertion/Modification

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Now it works here too. The exception only occurs if I start AwardTool in a VirtualBox VM.

The exception was thrown immediately after I selected the original BIOS file.

 

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On original bios all works fine. I try OEM7 (ACPITBL at End) Mod and nothing has changed.

 

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Gigabyte-P67A-UD4-B3
Treid BIOS version f2, f3, f3d with Tool 1.52, all works so far, used method: FACS
nothing else changed.

Thanks for this great tool which saved so much time to do it manually!

 

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Hi Andy!

First of all, thanks for your hard work.

I've found an interesting situation regarding 16 Mbit BIOS of Gigabyte boards.

The BIOS is 2MB in size and the checksum is updated in two places instead of just one.

In Official BIOS, checksum is found at 1EE000h.

After modding the BIOS with your tool, checksum values can be found at EE000h and 1EE000h.

It works, but it would be nice if the utility would only update the checksum at the required location.


By the way, can you please tell me how can I calculate the MSB/LSB checksum, can't find the info anywhere on the net.
Provided that you don't mind and it is not a secret?

 

Could u post a link to the BIOS??

Andy

Code:

Function VerifyChecksumsAward(ByRef sBIOS() As Byte, ByVal lBIOSLen As UInteger, ByVal lModulesOffset As UInteger, ByVal lDOffset As UInteger, ByVal lBBSS As UInteger, ByVal bVerbose As Boolean, ByVal bCorrectWhole As Boolean, ByVal bPreserveWhole As Boolean, ByVal bCorrectSB As Boolean, ByVal bStrict As Boolean) As Boolean

        Dim lSOffset, lOffset, lTemp, lBBSS64K, lChecksum, lLen As UInteger
        Dim iDiff As Integer
        Dim iStatus As MsgBoxResult

        VerifyChecksumsAward = False

        ' ** Initial variables
        lBBSS64K = (((lBBSS - (lBIOSLen - &H20000)) >> 16) And 3) ' ** 64K block found in (first =0,last =1)
        lBBSS64K <<= 16

        ' ** Verify modules and decompression block checksum
        lSOffset = lModulesOffset

        If Not bASUS And Not bCore60 Then
            If lBIOSLen <= &H40000 Or (sBIOS(lBBSS + 8) And &HF) = 0 Then
                lOffset = (CUInt(sBIOS(lBBSS + 9)) << 8) And &HF000
                lOffset = lBIOSLen - &H20000 + lBBSS64K + lOffset
            Else
                lOffset = (CUInt(sBIOS(lBBSS + 7)) << 8) And &HF000
                lOffset += (CUInt(sBIOS(lBIOSLen - &H20000 + lOffset + 11)) << 8) And &HF000
                lTemp = (sBIOS(lBBSS + 6)) And &HF
                lTemp = lBIOSLen - &H10000 - ((&HF - (lTemp And &HF)) << 16)
                lOffset += lTemp
            End If
            lOffset += &HFFE

            lChecksum = ChecksumAdd8(sBIOS, lSOffset, lOffset - lSOffset)
            iDiff = sBIOS(lOffset)
            If lChecksum <> sBIOS(lOffset) Then
                If bVerbose Then AddLine("Module and decompression block checksum is invalid (" & Hex(sBIOS(lOffset)) & " - Start " & Hex(lSOffset) & " Length " & Hex(lOffset - lSOffset) & ")")
                If bCorrectWhole Then
                    If bPreserveWhole Then
                        iDiff = (sBIOS(lOffset) - CInt(lChecksum) + sBIOS(lOffset - 1)) And &HFF
                        sBIOS(lOffset - 1) = iDiff
                        iDiff = sBIOS(lOffset)
                        lChecksum = sBIOS(lOffset)
                    Else
                        sBIOS(lOffset) = lChecksum And &HFF
                    End If
                    If bVerbose Then AddLine("Module and decompression block checksum corrected (" & Hex(lChecksum) & ")")
                Else
                    If gOptions.bIgnoreWarnings And bVerbose Then
                        iStatus = AddLine("Module and decompression block checksum is invalid", cWarning)
                        If iStatus = MsgBoxResult.No Then Exit Function
                    Else
                        If bVerbose Then AddLine("Module and decompression block checksum is invalid", cError)
                        Exit Function
                    End If
                End If
            Else
                If bVerbose Then AddLine("Module and decompression block checksum is valid (" & Hex(sBIOS(lOffset)) & " - Start " & Hex(lSOffset) & " Length " & Hex(lOffset - lSOffset) & ")")
            End If

            If bCore600 And bCorrectWhole Then
                ' ** Next byte - decompression block checksum - is mathematically difference
                iDiff = sBIOS(lOffset + 1) - iDiff
                sBIOS(lOffset + 1) = (sBIOS(lOffset) + iDiff) And &HFF
            End If
        Else
            If bASUS Then
                lOffset = (lDOffset And &HFFFFF000) + &HFFE
                If sBIOS(lOffset) <> 0 Then
                    If bCorrectWhole Then
                        sBIOS(lOffset) = 0
                        If bVerbose Then AddLine("Module and decompression block checksum corrected (00)")
                    Else
                        If gOptions.bIgnoreWarnings And bVerbose Then
                            iStatus = AddLine("Module and decompression block checksum should be 00", cWarning)
                            If iStatus = MsgBoxResult.No Then Exit Function
                        Else
                            If bVerbose Then AddLine("Module and decompression block checksum should be 00", cError)
                            Exit Function
                        End If
                    End If
                End If
            End If
        End If

        If bCore45 Or bCore60 Then
            lOffset = (lDOffset And &HFFFFF000) + &HFFF
            lSOffset = lDOffset
            lChecksum = ChecksumAdd8(sBIOS, lSOffset, lOffset - lSOffset)
            If lChecksum <> sBIOS(lOffset) Then
                If bCorrectWhole Then
                    sBIOS(lOffset) = lChecksum And &HFF
                    If bVerbose Then AddLine("Decompression block checksum corrected (" & Hex(lChecksum) & ")")
                Else
                    If bVerbose Then AddLine("Decompression block checksum is invalid (" & Hex(sBIOS(lOffset)) & " - Start " & Hex(lSOffset) & " Length " & Hex(lOffset - lSOffset) & ")")
                    If gOptions.bIgnoreWarnings And bVerbose Then
                        iStatus = AddLine("Decompression block checksum is invalid", cWarning)
                        If iStatus = MsgBoxResult.No Then Exit Function
                    Else
                        If bVerbose Then AddLine("Decompression block checksum is invalid", cError)
                        Exit Function
                    End If
                End If
            Else
                If bVerbose Then AddLine("Decompression block checksum is valid (" & Hex(sBIOS(lOffset)) & " - Start " & Hex(lSOffset) & " Length " & Hex(lOffset - lSOffset) & ")")
            End If
        End If

        ' ** Check extra
        If bCore600 Then
            lOffset = ConvertDWord(sBIOS(lBBSS + 6), sBIOS(lBBSS + 7), 0, 0)
            lOffset = ((lOffset And &HF) << 16) Or (lOffset And &HFFF0) ' ROR lOffset,4
            If lBIOSLen < &H100000 Then lTemp = (&H100000 - lBIOSLen) Else lTemp = 0
            If lBIOSLen > &H100000 Then lSOffset = lBIOSLen Else lSOffset = &H100000
            If lOffset >= lTemp And lOffset < lSOffset Then
                lOffset -= lTemp
                lTemp = ConvertDWord(sBIOS(lOffset + 10), sBIOS(lOffset + 11), 0, 0)
                If lTemp > 2 Then
                    lTemp -= 1
                    lChecksum = ChecksumAdd8(sBIOS, lOffset, lTemp - 1)
                    If lChecksum <> sBIOS(lOffset + lTemp) Then
                        AddLine("Extra checksum invalid or not present")
                    Else
                        AddLine("Extra checksum valid")
                    End If
                Else
                    AddLine("Extra checksum not present")
                End If
            Else
                AddLine("Extra checksum not present")
            End If
        End If

        If bCore600 Then
            ' ** Look to see if padding at the start            
            If lBIOSLen > (512 * 1024) Then
                For iDiff = lBIOSLen To (512 * 1024) Step -(512 * 1024)
                    For lOffset = 0 To iDiff - 1
                        If sBIOS(lOffset) <> &HFF Then Exit For
                    Next
                    If lOffset = iDiff Then Exit For
                Next
            End If
            If lOffset <> iDiff Then lOffset = 0

            ' ** LSB/MSB sums - makes module sum to 0
            If lBIOSLen <= &H40000 Or (sBIOS(lBBSS + 8) And &HF) = 0 Then
                lTemp = lBBSS64K + lBIOSLen - &H20000 + ((CUInt(sBIOS(lBBSS + 19)) << 8) And &HF000)
            Else
                lTemp = (CUInt(sBIOS(lBBSS + 18)) << 16) + (CUInt(sBIOS(lBBSS + 19)) << 8)
            End If
            lTemp += lOffset

            lChecksum = ChecksumSplit8(sBIOS, 0, lBIOSLen, lTemp, False)
            If lChecksum <> sBIOS(lTemp) Then
                If bCorrectSB Then
                    sBIOS(lTemp) = lChecksum And &HFF
                    If bVerbose Then AddLine("First byte (LSB) checksum corrected (" & Hex(lChecksum) & ")")
                Else
                    If bStrict And bVerbose Then AddLine("First byte (LSB) checksum is invalid")
                End If
            Else
                If bVerbose Then AddLine("First byte (LSB) checksum is valid")
            End If

            lChecksum = ChecksumSplit8(sBIOS, 0, lBIOSLen, lTemp + 1, True)
            If lChecksum <> sBIOS(lTemp + 1) Then
                If bCorrectSB Then
                    sBIOS(lTemp + 1) = lChecksum And &HFF
                    If bVerbose Then AddLine("Second byte (MSB) checksum corrected (" & Hex(lChecksum) & ")")
                Else
                    If bStrict And bVerbose Then AddLine("Second byte (MSB) checksum is invalid")
                End If
            Else
                If bVerbose Then AddLine("Second byte (MSB) checksum is valid")
            End If
        End If

        VerifyChecksumsAward = True

    End Function

Function Checksum8(ByRef sBuffer() As Byte, ByVal lOffset As UInteger, ByVal lLen As UInteger) As UInteger

        Dim dChecksum As Long, lCount As UInteger

        dChecksum = 0
        For lCount = 0 To lLen - 1
            dChecksum += sBuffer(lOffset + lCount)
        Next lCount
        Checksum8 = CUInt((-dChecksum) And &HFF)

    End Function

    Function ChecksumAdd8(ByRef sBuffer() As Byte, ByVal lOffset As UInteger, ByVal lLen As UInteger) As UInteger

        Dim dChecksum As Long, lCount As UInteger

        dChecksum = 0
        For lCount = 0 To lLen - 1
            dChecksum += sBuffer(lOffset + lCount)
        Next lCount
        ChecksumAdd8 = CUInt(dChecksum And &HFF)

    End Function

    Function ChecksumSplit8(ByRef sBuffer() As Byte, ByVal lOffset As UInteger, ByVal lLen As UInteger, ByVal lSkip As UInteger, ByVal bMSB As Boolean) As UInteger

        Dim dChecksum As Long, lCount As UInteger

        dChecksum = 0
        For lCount = 0 To lLen - 2 Step 2
            dChecksum += sBuffer(lOffset + lCount + Math.Abs(CInt(bMSB)))
        Next lCount
        dChecksum -= sBuffer(lOffset + lSkip)
        ChecksumSplit8 = CUInt((-dChecksum) And &HFF)

    End Function

 

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Hey Andy,

the same Exception occurs when it runs from a non-boot drive. I forgot to mention that there is another exception immediately after the program is started:

Code:

************** Exception Text **************
System.NullReferenceException: Object reference not set to an instance of an object.
   at Award.frmMain.frmMain_Load(Object sender, EventArgs e)
   at System.EventHandler.Invoke(Object sender, EventArgs e)
   at System.Windows.Forms.Form.OnLoad(EventArgs e)
   at System.Windows.Forms.Form.OnCreateControl()
   at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible)
   at System.Windows.Forms.Control.CreateControl()
   at System.Windows.Forms.Control.WmShowWindow(Message& m)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
   at System.Windows.Forms.ContainerControl.WndProc(Message& m)
   at System.Windows.Forms.Form.WmShowWindow(Message& m)
   at System.Windows.Forms.Form.WndProc(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

I found out that both exceptions only occur when the program is run from a virtual machine. When I run the program on a real PC there are no problems.

 

Thats probs why then.
I think it might me the code it uses to determine processer type (for some of the removal routines)
I could do a test version if u wanted
Andy

 

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Thanks for feedback.

Manuf.: Other
Mod method: 0+2 and tick "Overwrite dummy code" in Advanced