fb9819f13d
Add comment for python function, too. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: "Yao, Jiewen" <jiewen.yao@intel.com> Reviewed-by: "Mudusuru, Giri P" <giri.p.mudusuru@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18406 6f19259b-4bc3-4df7-8a09-765794883524
912 lines
29 KiB
Python
912 lines
29 KiB
Python
## @ PatchFv.py
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#
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# Copyright (c) 2014 - 2015, Intel Corporation. All rights reserved.<BR>
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# This program and the accompanying materials are licensed and made available under
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# the terms and conditions of the BSD License that accompanies this distribution.
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# The full text of the license may be found at
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# http://opensource.org/licenses/bsd-license.php.
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#
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# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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#
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##
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import os
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import re
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import sys
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#
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# Read data from file
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#
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# param [in] binfile Binary file
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# param [in] offset Offset
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# param [in] len Length
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#
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# retval value Value
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#
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def readDataFromFile (binfile, offset, len=1):
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fd = open(binfile, "r+b")
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fsize = os.path.getsize(binfile)
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offval = offset & 0xFFFFFFFF
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if (offval & 0x80000000):
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offval = fsize - (0xFFFFFFFF - offval + 1)
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fd.seek(offval)
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bytearray = [ord(b) for b in fd.read(len)]
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value = 0
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idx = len - 1
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while idx >= 0:
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value = value << 8 | bytearray[idx]
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idx = idx - 1
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fd.close()
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return value
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#
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# Check FSP header is valid or not
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#
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# param [in] binfile Binary file
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#
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# retval boolean True: valid; False: invalid
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#
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def IsFspHeaderValid (binfile):
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fd = open (binfile, "rb")
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bindat = fd.read(0x200) # only read first 0x200 bytes
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fd.close()
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HeaderList = ['FSPH' , 'FSPP' , 'FSPE'] # Check 'FSPH', 'FSPP', and 'FSPE' in the FSP header
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OffsetList = []
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for each in HeaderList:
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if each in bindat:
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idx = bindat.index(each)
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else:
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idx = 0
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OffsetList.append(idx)
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if not OffsetList[0] or not OffsetList[1]: # If 'FSPH' or 'FSPP' is missing, it will return false
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return False
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Revision = ord(bindat[OffsetList[0] + 0x0B])
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#
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# if revision is bigger than 1, it means it is FSP v1.1 or greater revision, which must contain 'FSPE'.
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#
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if Revision > 1 and not OffsetList[2]:
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return False # If FSP v1.1 or greater without 'FSPE', then return false
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return True
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#
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# Patch data in file
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#
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# param [in] binfile Binary file
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# param [in] offset Offset
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# param [in] value Patch value
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# param [in] len Length
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#
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# retval len Length
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#
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def patchDataInFile (binfile, offset, value, len=1):
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fd = open(binfile, "r+b")
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fsize = os.path.getsize(binfile)
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offval = offset & 0xFFFFFFFF
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if (offval & 0x80000000):
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offval = fsize - (0xFFFFFFFF - offval + 1)
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bytearray = []
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idx = 0
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while idx < len:
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bytearray.append(value & 0xFF)
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value = value >> 8
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idx = idx + 1
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fd.seek(offval)
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fd.write("".join(chr(b) for b in bytearray))
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fd.close()
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return len
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class Symbols:
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def __init__(self):
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self.dictSymbolAddress = {}
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self.dictGuidNameXref = {}
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self.dictFfsOffset = {}
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self.dictVariable = {}
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self.dictModBase = {}
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self.fdFile = None
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self.string = ""
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self.fdBase = 0xFFFFFFFF
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self.fdSize = 0
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self.index = 0
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self.parenthesisOpenSet = '([{<'
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self.parenthesisCloseSet = ')]}>'
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#
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# Get FD file
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#
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# retval self.fdFile Retrieve FD file
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#
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def getFdFile (self):
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return self.fdFile
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#
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# Get FD size
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#
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# retval self.fdSize Retrieve the size of FD file
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#
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def getFdSize (self):
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return self.fdSize
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#
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# Create dictionaries
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#
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# param [in] fvDir FV's directory
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# param [in] fvNames All FV's names
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#
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# retval 0 Created dictionaries successfully
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#
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def createDicts (self, fvDir, fvNames):
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#
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# If the fvDir is not a dirctory, then raise an exception
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#
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if not os.path.isdir(fvDir):
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raise Exception ("'%s' is not a valid directory!" % FvDir)
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#
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# If the Guid.xref is not existing in fvDir, then raise an exception
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#
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xrefFile = os.path.join(fvDir, "Guid.xref")
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if not os.path.exists(xrefFile):
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raise Exception("Cannot open GUID Xref file '%s'!" % xrefFile)
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#
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# Add GUID reference to dictionary
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#
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self.dictGuidNameXref = {}
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self.parseGuidXrefFile(xrefFile)
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#
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# Split up each FV from fvNames and get the fdBase
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#
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fvList = fvNames.split(":")
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fdBase = fvList.pop()
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if len(fvList) == 0:
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fvList.append(fdBase)
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#
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# If the FD file is not existing, then raise an exception
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#
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fdFile = os.path.join(fvDir, fdBase.strip() + ".fd")
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if not os.path.exists(fdFile):
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raise Exception("Cannot open FD file '%s'!" % fdFile)
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#
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# Get the size of the FD file
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#
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self.fdFile = fdFile
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self.fdSize = os.path.getsize(fdFile)
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#
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# If the INF file, which is the first element of fvList, is not existing, then raise an exception
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#
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infFile = os.path.join(fvDir, fvList[0].strip()) + ".inf"
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if not os.path.exists(infFile):
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raise Exception("Cannot open INF file '%s'!" % infFile)
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#
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# Parse INF file in order to get fdBase and then assign those values to dictVariable
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#
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self.parseInfFile(infFile)
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self.dictVariable = {}
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self.dictVariable["FDSIZE"] = self.fdSize
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self.dictVariable["FDBASE"] = self.fdBase
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#
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# Collect information from FV MAP file and FV TXT file then
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# put them into dictionaries
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#
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self.dictSymbolAddress = {}
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self.dictFfsOffset = {}
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for file in fvList:
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#
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# If the .Fv.map file is not existing, then raise an exception.
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# Otherwise, parse FV MAP file
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#
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fvFile = os.path.join(fvDir, file.strip()) + ".Fv"
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mapFile = fvFile + ".map"
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if not os.path.exists(mapFile):
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raise Exception("Cannot open MAP file '%s'!" % mapFile)
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self.parseFvMapFile(mapFile)
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#
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# If the .Fv.txt file is not existing, then raise an exception.
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# Otherwise, parse FV TXT file
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#
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fvTxtFile = fvFile + ".txt"
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if not os.path.exists(fvTxtFile):
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raise Exception("Cannot open FV TXT file '%s'!" % fvTxtFile)
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self.parseFvTxtFile(fvTxtFile)
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#
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# Search all MAP files in FFS directory if it exists then parse MOD MAP file
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#
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ffsDir = os.path.join(fvDir, "Ffs")
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if (os.path.isdir(ffsDir)):
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for item in os.listdir(ffsDir):
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if len(item) <= 0x24:
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continue
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mapFile =os.path.join(ffsDir, item, "%s.map" % item[0:0x24])
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if not os.path.exists(mapFile):
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continue
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self.parseModMapFile(item[0x24:], mapFile)
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return 0
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#
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# Get FV offset in FD file
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#
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# param [in] fvFile FV file
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#
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# retval offset Got FV offset successfully
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#
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def getFvOffsetInFd(self, fvFile):
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#
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# Check if the first 0x70 bytes of fvFile can be found in fdFile
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#
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fvHandle = open(fvFile, "r+b")
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fdHandle = open(self.fdFile, "r+b")
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offset = fdHandle.read().find(fvHandle.read(0x70))
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fvHandle.close()
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fdHandle.close()
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if offset == -1:
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raise Exception("Could not locate FV file %s in FD!" % fvFile)
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return offset
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#
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# Parse INF file
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#
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# param [in] infFile INF file
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#
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# retval 0 Parsed INF file successfully
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#
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def parseInfFile(self, infFile):
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#
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# Get FV offset and search EFI_BASE_ADDRESS in the FD file
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# then assign the value of EFI_BASE_ADDRESS to fdBase
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#
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fvOffset = self.getFvOffsetInFd(infFile[0:-4] + ".Fv")
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fdIn = open(infFile, "r")
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rptLine = fdIn.readline()
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self.fdBase = 0xFFFFFFFF
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while (rptLine != "" ):
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#EFI_BASE_ADDRESS = 0xFFFDF400
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match = re.match("^EFI_BASE_ADDRESS\s*=\s*(0x[a-fA-F0-9]+)", rptLine)
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if match is not None:
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self.fdBase = int(match.group(1), 16) - fvOffset
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rptLine = fdIn.readline()
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fdIn.close()
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if self.fdBase == 0xFFFFFFFF:
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raise Exception("Could not find EFI_BASE_ADDRESS in INF file!" % fvFile)
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return 0
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#
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# Parse FV TXT file
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#
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# param [in] fvTxtFile .Fv.txt file
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#
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# retval 0 Parsed FV TXT file successfully
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#
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def parseFvTxtFile(self, fvTxtFile):
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#
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# Get information from .Fv.txt in order to create a dictionary
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# For example,
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# self.dictFfsOffset[912740BE-2284-4734-B971-84B027353F0C] = 0x000D4078
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#
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fvOffset = self.getFvOffsetInFd(fvTxtFile[0:-4])
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fdIn = open(fvTxtFile, "r")
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rptLine = fdIn.readline()
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while (rptLine != "" ):
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match = re.match("(0x[a-fA-F0-9]+)\s([0-9a-fA-F\-]+)", rptLine)
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if match is not None:
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self.dictFfsOffset[match.group(2)] = "0x%08X" % (int(match.group(1), 16) + fvOffset)
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rptLine = fdIn.readline()
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fdIn.close()
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return 0
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#
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# Parse FV MAP file
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#
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# param [in] mapFile .Fv.map file
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#
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# retval 0 Parsed FV MAP file successfully
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#
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def parseFvMapFile(self, mapFile):
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#
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# Get information from .Fv.map in order to create dictionaries
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# For example,
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# self.dictModBase[FspSecCore:BASE] = 4294592776 (0xfffa4908)
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# self.dictModBase[FspSecCore:ENTRY] = 4294606552 (0xfffa7ed8)
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# self.dictModBase[FspSecCore:TEXT] = 4294593080 (0xfffa4a38)
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# self.dictModBase[FspSecCore:DATA] = 4294612280 (0xfffa9538)
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# self.dictSymbolAddress[FspSecCore:_SecStartup] = 0x00fffa4a38
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#
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fdIn = open(mapFile, "r")
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rptLine = fdIn.readline()
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modName = ""
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while (rptLine != "" ):
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if rptLine[0] != ' ':
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#DxeIpl (Fixed Flash Address, BaseAddress=0x00fffb4310, EntryPoint=0x00fffb4958)
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#(GUID=86D70125-BAA3-4296-A62F-602BEBBB9081 .textbaseaddress=0x00fffb4398 .databaseaddress=0x00fffb4178)
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match = re.match("([_a-zA-Z0-9\-]+)\s\(.+BaseAddress=(0x[0-9a-fA-F]+),\s+EntryPoint=(0x[0-9a-fA-F]+)\)", rptLine)
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if match is not None:
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modName = match.group(1)
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if len(modName) == 36:
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modName = self.dictGuidNameXref[modName.upper()]
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self.dictModBase['%s:BASE' % modName] = int (match.group(2), 16)
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self.dictModBase['%s:ENTRY' % modName] = int (match.group(3), 16)
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match = re.match("\(GUID=([A-Z0-9\-]+)\s+\.textbaseaddress=(0x[0-9a-fA-F]+)\s+\.databaseaddress=(0x[0-9a-fA-F]+)\)", rptLine)
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if match is not None:
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modName = match.group(1)
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if len(modName) == 36:
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modName = self.dictGuidNameXref[modName.upper()]
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self.dictModBase['%s:TEXT' % modName] = int (match.group(2), 16)
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self.dictModBase['%s:DATA' % modName] = int (match.group(3), 16)
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else:
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# 0x00fff8016c __ModuleEntryPoint
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match = re.match("^\s+(0x[a-z0-9]+)\s+([_a-zA-Z0-9]+)", rptLine)
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if match is not None:
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self.dictSymbolAddress["%s:%s"%(modName, match.group(2))] = match.group(1)
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rptLine = fdIn.readline()
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fdIn.close()
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return 0
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#
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# Parse MOD MAP file
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#
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# param [in] moduleName Module name
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# param [in] mapFile .Fv.map file
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#
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# retval 0 Parsed MOD MAP file successfully
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# retval 1 There is no moduleEntryPoint in modSymbols
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#
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def parseModMapFile(self, moduleName, mapFile):
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#
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# Get information from mapFile by moduleName in order to create a dictionary
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# For example,
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# self.dictSymbolAddress[FspSecCore:___guard_fids_count] = 0x00fffa4778
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#
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modSymbols = {}
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fdIn = open(mapFile, "r")
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reportLines = fdIn.readlines()
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fdIn.close()
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moduleEntryPoint = "__ModuleEntryPoint"
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reportLine = reportLines[0]
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if reportLine.strip().find("Archive member included") != -1:
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#GCC
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# 0x0000000000001d55 IoRead8
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patchMapFileMatchString = "\s+(0x[0-9a-fA-F]{16})\s+([^\s][^0x][_a-zA-Z0-9\-]+)\s"
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matchKeyGroupIndex = 2
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matchSymbolGroupIndex = 1
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prefix = '_'
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else:
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#MSFT
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#0003:00000190 _gComBase 00007a50 SerialPo
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patchMapFileMatchString = "^\s[0-9a-fA-F]{4}:[0-9a-fA-F]{8}\s+(\w+)\s+([0-9a-fA-F]{8}\s+)"
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matchKeyGroupIndex = 1
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matchSymbolGroupIndex = 2
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prefix = ''
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for reportLine in reportLines:
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match = re.match(patchMapFileMatchString, reportLine)
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if match is not None:
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modSymbols[prefix + match.group(matchKeyGroupIndex)] = match.group(matchSymbolGroupIndex)
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# Handle extra module patchable PCD variable in Linux map since it might have different format
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# .data._gPcd_BinaryPatch_PcdVpdBaseAddress
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# 0x0000000000003714 0x4 /tmp/ccmytayk.ltrans1.ltrans.o
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handleNext = False
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if matchSymbolGroupIndex == 1:
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for reportLine in reportLines:
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if handleNext:
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handleNext = False
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pcdName = match.group(1)
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match = re.match("\s+(0x[0-9a-fA-F]{16})\s+", reportLine)
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if match is not None:
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modSymbols[prefix + pcdName] = match.group(1)
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else:
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match = re.match("^\s\.data\.(_gPcd_BinaryPatch[_a-zA-Z0-9\-]+)", reportLine)
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if match is not None:
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handleNext = True
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continue
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if not moduleEntryPoint in modSymbols:
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return 1
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modEntry = '%s:%s' % (moduleName,moduleEntryPoint)
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if not modEntry in self.dictSymbolAddress:
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modKey = '%s:ENTRY' % moduleName
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if modKey in self.dictModBase:
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baseOffset = self.dictModBase['%s:ENTRY' % moduleName] - int(modSymbols[moduleEntryPoint], 16)
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else:
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return 2
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else:
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baseOffset = int(self.dictSymbolAddress[modEntry], 16) - int(modSymbols[moduleEntryPoint], 16)
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for symbol in modSymbols:
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fullSym = "%s:%s" % (moduleName, symbol)
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if not fullSym in self.dictSymbolAddress:
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self.dictSymbolAddress[fullSym] = "0x00%08x" % (baseOffset+ int(modSymbols[symbol], 16))
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return 0
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#
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# Parse Guid.xref file
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#
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# param [in] xrefFile the full directory of Guid.xref file
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#
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# retval 0 Parsed Guid.xref file successfully
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#
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def parseGuidXrefFile(self, xrefFile):
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#
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# Get information from Guid.xref in order to create a GuidNameXref dictionary
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# The dictGuidNameXref, for example, will be like
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# dictGuidNameXref [1BA0062E-C779-4582-8566-336AE8F78F09] = FspSecCore
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#
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fdIn = open(xrefFile, "r")
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rptLine = fdIn.readline()
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while (rptLine != "" ):
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match = re.match("([0-9a-fA-F\-]+)\s([_a-zA-Z0-9]+)", rptLine)
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if match is not None:
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self.dictGuidNameXref[match.group(1).upper()] = match.group(2)
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rptLine = fdIn.readline()
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fdIn.close()
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return 0
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#
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# Get current character
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#
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# retval elf.string[self.index]
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# retval '' Exception
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#
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def getCurr(self):
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try:
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return self.string[self.index]
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except Exception:
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return ''
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#
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# Check to see if it is last index
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#
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# retval self.index
|
|
#
|
|
def isLast(self):
|
|
return self.index == len(self.string)
|
|
|
|
#
|
|
# Move to next index
|
|
#
|
|
def moveNext(self):
|
|
self.index += 1
|
|
|
|
#
|
|
# Skip space
|
|
#
|
|
def skipSpace(self):
|
|
while not self.isLast():
|
|
if self.getCurr() in ' \t':
|
|
self.moveNext()
|
|
else:
|
|
return
|
|
|
|
#
|
|
# Parse value
|
|
#
|
|
# retval value
|
|
#
|
|
def parseValue(self):
|
|
self.skipSpace()
|
|
var = ''
|
|
while not self.isLast():
|
|
char = self.getCurr()
|
|
if char.lower() in '_ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789:-':
|
|
var += char
|
|
self.moveNext()
|
|
else:
|
|
break
|
|
|
|
if ':' in var:
|
|
partList = var.split(':')
|
|
if len(partList) != 2:
|
|
raise Exception("Unrecognized expression %s" % var)
|
|
modName = partList[0]
|
|
modOff = partList[1]
|
|
if ('-' not in modName) and (modOff[0] in '0123456789'):
|
|
# MOD: OFFSET
|
|
var = self.getModGuid(modName) + ":" + modOff
|
|
if '-' in var: # GUID:OFFSET
|
|
value = self.getGuidOff(var)
|
|
else:
|
|
value = self.getSymbols(var)
|
|
self.synUsed = True
|
|
else:
|
|
if var[0] in '0123456789':
|
|
value = self.getNumber(var)
|
|
else:
|
|
value = self.getVariable(var)
|
|
return int(value)
|
|
|
|
#
|
|
# Parse single operation
|
|
#
|
|
# retval ~self.parseBrace() or self.parseValue()
|
|
#
|
|
def parseSingleOp(self):
|
|
self.skipSpace()
|
|
char = self.getCurr()
|
|
if char == '~':
|
|
self.moveNext()
|
|
return ~self.parseBrace()
|
|
else:
|
|
return self.parseValue()
|
|
|
|
#
|
|
# Parse symbol of Brace([, {, <)
|
|
#
|
|
# retval value or self.parseSingleOp()
|
|
#
|
|
def parseBrace(self):
|
|
self.skipSpace()
|
|
char = self.getCurr()
|
|
parenthesisType = self.parenthesisOpenSet.find(char)
|
|
if parenthesisType >= 0:
|
|
self.moveNext()
|
|
value = self.parseExpr()
|
|
self.skipSpace()
|
|
if self.getCurr() != self.parenthesisCloseSet[parenthesisType]:
|
|
raise Exception("No closing brace")
|
|
self.moveNext()
|
|
if parenthesisType == 1: # [ : Get content
|
|
value = self.getContent(value)
|
|
elif parenthesisType == 2: # { : To address
|
|
value = self.toAddress(value)
|
|
elif parenthesisType == 3: # < : To offset
|
|
value = self.toOffset(value)
|
|
return value
|
|
else:
|
|
return self.parseSingleOp()
|
|
|
|
#
|
|
# Parse symbol of Multiplier(*)
|
|
#
|
|
# retval value or self.parseSingleOp()
|
|
#
|
|
def parseMul(self):
|
|
values = [self.parseBrace()]
|
|
while True:
|
|
self.skipSpace()
|
|
char = self.getCurr()
|
|
if char == '*':
|
|
self.moveNext()
|
|
values.append(self.parseBrace())
|
|
else:
|
|
break
|
|
value = 1
|
|
for each in values:
|
|
value *= each
|
|
return value
|
|
|
|
#
|
|
# Parse symbol of And(&) and Or(|)
|
|
#
|
|
# retval value
|
|
#
|
|
def parseAndOr(self):
|
|
values = [self.parseMul()]
|
|
op = None
|
|
value = 0xFFFFFFFF
|
|
while True:
|
|
self.skipSpace()
|
|
char = self.getCurr()
|
|
if char == '&':
|
|
self.moveNext()
|
|
values.append(self.parseMul())
|
|
op = char
|
|
elif char == '|':
|
|
div_index = self.index
|
|
self.moveNext()
|
|
values.append(self.parseMul())
|
|
value = 0
|
|
op = char
|
|
else:
|
|
break
|
|
|
|
for each in values:
|
|
if op == '|':
|
|
value |= each
|
|
else:
|
|
value &= each
|
|
|
|
return value
|
|
|
|
#
|
|
# Parse symbol of Add(+) and Minus(-)
|
|
#
|
|
# retval sum(values)
|
|
#
|
|
def parseAddMinus(self):
|
|
values = [self.parseAndOr()]
|
|
while True:
|
|
self.skipSpace()
|
|
char = self.getCurr()
|
|
if char == '+':
|
|
self.moveNext()
|
|
values.append(self.parseAndOr())
|
|
elif char == '-':
|
|
self.moveNext()
|
|
values.append(-1 * self.parseAndOr())
|
|
else:
|
|
break
|
|
return sum(values)
|
|
|
|
#
|
|
# Parse expression
|
|
#
|
|
# retval self.parseAddMinus()
|
|
#
|
|
def parseExpr(self):
|
|
return self.parseAddMinus()
|
|
|
|
#
|
|
# Get result
|
|
#
|
|
# retval value
|
|
#
|
|
def getResult(self):
|
|
value = self.parseExpr()
|
|
self.skipSpace()
|
|
if not self.isLast():
|
|
raise Exception("Unexpected character found '%s'" % self.getCurr())
|
|
return value
|
|
|
|
#
|
|
# Get module GUID
|
|
#
|
|
# retval value
|
|
#
|
|
def getModGuid(self, var):
|
|
guid = (guid for guid,name in self.dictGuidNameXref.items() if name==var)
|
|
try:
|
|
value = guid.next()
|
|
except Exception:
|
|
raise Exception("Unknown module name %s !" % var)
|
|
return value
|
|
|
|
#
|
|
# Get variable
|
|
#
|
|
# retval value
|
|
#
|
|
def getVariable(self, var):
|
|
value = self.dictVariable.get(var, None)
|
|
if value == None:
|
|
raise Exception("Unrecognized variable '%s'" % var)
|
|
return value
|
|
|
|
#
|
|
# Get number
|
|
#
|
|
# retval value
|
|
#
|
|
def getNumber(self, var):
|
|
var = var.strip()
|
|
if var.startswith('0x'): # HEX
|
|
value = int(var, 16)
|
|
else:
|
|
value = int(var, 10)
|
|
return value
|
|
|
|
#
|
|
# Get content
|
|
#
|
|
# param [in] value
|
|
#
|
|
# retval value
|
|
#
|
|
def getContent(self, value):
|
|
if (value >= self.fdBase) and (value < self.fdBase + self.fdSize):
|
|
value = value - self.fdBase
|
|
if value >= self.fdSize:
|
|
raise Exception("Invalid file offset 0x%08x !" % value)
|
|
return readDataFromFile (self.fdFile, value, 4)
|
|
|
|
#
|
|
# Change value to address
|
|
#
|
|
# param [in] value
|
|
#
|
|
# retval value
|
|
#
|
|
def toAddress(self, value):
|
|
if value < self.fdSize:
|
|
value = value + self.fdBase
|
|
return value
|
|
|
|
#
|
|
# Change value to offset
|
|
#
|
|
# param [in] value
|
|
#
|
|
# retval value
|
|
#
|
|
def toOffset(self, value):
|
|
if value > self.fdBase:
|
|
value = value - self.fdBase
|
|
return value
|
|
|
|
#
|
|
# Get GUID offset
|
|
#
|
|
# param [in] value
|
|
#
|
|
# retval value
|
|
#
|
|
def getGuidOff(self, value):
|
|
# GUID:Offset
|
|
symbolName = value.split(':')
|
|
if len(symbolName) == 2 and self.dictFfsOffset.has_key(symbolName[0]):
|
|
value = (int(self.dictFfsOffset[symbolName[0]], 16) + int(symbolName[1], 16)) & 0xFFFFFFFF
|
|
else:
|
|
raise Exception("Unknown GUID %s !" % value)
|
|
return value
|
|
|
|
#
|
|
# Get symbols
|
|
#
|
|
# param [in] value
|
|
#
|
|
# retval ret
|
|
#
|
|
def getSymbols(self, value):
|
|
if self.dictSymbolAddress.has_key(value):
|
|
# Module:Function
|
|
ret = int (self.dictSymbolAddress[value], 16)
|
|
else:
|
|
raise Exception("Unknown symbol %s !" % value)
|
|
return ret
|
|
|
|
#
|
|
# Evaluate symbols
|
|
#
|
|
# param [in] expression
|
|
# param [in] isOffset
|
|
#
|
|
# retval value & 0xFFFFFFFF
|
|
#
|
|
def evaluate(self, expression, isOffset):
|
|
self.index = 0
|
|
self.synUsed = False
|
|
self.string = expression
|
|
value = self.getResult()
|
|
if isOffset:
|
|
if self.synUsed:
|
|
# Consider it as an address first
|
|
if (value >= self.fdBase) and (value < self.fdBase + self.fdSize):
|
|
value = value - self.fdBase
|
|
if value & 0x80000000:
|
|
# Consider it as a negative offset next
|
|
offset = (~value & 0xFFFFFFFF) + 1
|
|
if offset < self.fdSize:
|
|
value = self.fdSize - offset
|
|
if value >= self.fdSize:
|
|
raise Exception("Invalid offset expression !")
|
|
return value & 0xFFFFFFFF
|
|
|
|
#
|
|
# Print out the usage
|
|
#
|
|
def usage():
|
|
print "Usage: \n\tPatchFv FvBuildDir [FvFileBaseNames:]FdFileBaseNameToPatch \"Offset, Value\""
|
|
|
|
def main():
|
|
#
|
|
# Parse the options and args
|
|
#
|
|
symTables = Symbols()
|
|
|
|
#
|
|
# If the arguments are less than 4, then return an error.
|
|
#
|
|
if len(sys.argv) < 4:
|
|
Usage()
|
|
return 1
|
|
|
|
#
|
|
# If it fails to create dictionaries, then return an error.
|
|
#
|
|
if symTables.createDicts(sys.argv[1], sys.argv[2]) != 0:
|
|
print "ERROR: Failed to create symbol dictionary!!"
|
|
return 2
|
|
|
|
#
|
|
# Get FD file and size
|
|
#
|
|
fdFile = symTables.getFdFile()
|
|
fdSize = symTables.getFdSize()
|
|
|
|
try:
|
|
#
|
|
# Check to see if FSP header is valid
|
|
#
|
|
ret = IsFspHeaderValid(fdFile)
|
|
if ret == False:
|
|
raise Exception ("The FSP header is not valid. Stop patching FD.")
|
|
comment = ""
|
|
for fvFile in sys.argv[3:]:
|
|
#
|
|
# Check to see if it has enough arguments
|
|
#
|
|
items = fvFile.split(",")
|
|
if len (items) < 2:
|
|
raise Exception("Expect more arguments for '%s'!" % fvFile)
|
|
|
|
comment = ""
|
|
command = ""
|
|
params = []
|
|
for item in items:
|
|
item = item.strip()
|
|
if item.startswith("@"):
|
|
comment = item[1:]
|
|
elif item.startswith("$"):
|
|
command = item[1:]
|
|
else:
|
|
if len(params) == 0:
|
|
isOffset = True
|
|
else :
|
|
isOffset = False
|
|
#
|
|
# Parse symbols then append it to params
|
|
#
|
|
params.append (symTables.evaluate(item, isOffset))
|
|
|
|
#
|
|
# Patch a new value into FD file if it is not a command
|
|
#
|
|
if command == "":
|
|
# Patch a DWORD
|
|
if len (params) == 2:
|
|
offset = params[0]
|
|
value = params[1]
|
|
oldvalue = readDataFromFile(fdFile, offset, 4)
|
|
ret = patchDataInFile (fdFile, offset, value, 4) - 4
|
|
else:
|
|
raise Exception ("Patch command needs 2 parameters !")
|
|
|
|
if ret:
|
|
raise Exception ("Patch failed for offset 0x%08X" % offset)
|
|
else:
|
|
print "Patched offset 0x%08X:[%08X] with value 0x%08X # %s" % (offset, oldvalue, value, comment)
|
|
|
|
elif command == "COPY":
|
|
#
|
|
# Copy binary block from source to destination
|
|
#
|
|
if len (params) == 3:
|
|
src = symTables.toOffset(params[0])
|
|
dest = symTables.toOffset(params[1])
|
|
clen = symTables.toOffset(params[2])
|
|
if (dest + clen <= fdSize) and (src + clen <= fdSize):
|
|
oldvalue = readDataFromFile(fdFile, src, clen)
|
|
ret = patchDataInFile (fdFile, dest, oldvalue, clen) - clen
|
|
else:
|
|
raise Exception ("Copy command OFFSET or LENGTH parameter is invalid !")
|
|
else:
|
|
raise Exception ("Copy command needs 3 parameters !")
|
|
|
|
if ret:
|
|
raise Exception ("Copy failed from offset 0x%08X to offset 0x%08X!" % (src, dest))
|
|
else :
|
|
print "Copied %d bytes from offset 0x%08X ~ offset 0x%08X # %s" % (clen, src, dest, comment)
|
|
else:
|
|
raise Exception ("Unknown command %s!" % command)
|
|
return 0
|
|
|
|
except Exception as (ex):
|
|
print "ERROR: %s" % ex
|
|
return 1
|
|
|
|
if __name__ == '__main__':
|
|
sys.exit(main())
|