diff options
Diffstat (limited to 'IntelFspPkg/Tools/PatchFv.py')
| -rw-r--r-- | IntelFspPkg/Tools/PatchFv.py | 567 |
1 files changed, 567 insertions, 0 deletions
diff --git a/IntelFspPkg/Tools/PatchFv.py b/IntelFspPkg/Tools/PatchFv.py new file mode 100644 index 0000000..cc22cc2 --- /dev/null +++ b/IntelFspPkg/Tools/PatchFv.py @@ -0,0 +1,567 @@ +## @ PatchFv.py
+#
+# Copyright (c) 2014, Intel Corporation. All rights reserved.<BR>
+# This program and the accompanying materials are licensed and made available under
+# the terms and conditions of the BSD License that accompanies this distribution.
+# The full text of the license may be found at
+# http://opensource.org/licenses/bsd-license.php.
+#
+# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+#
+##
+
+import os
+import re
+import sys
+
+def readDataFromFile (binfile, offset, len=1):
+ fd = open(binfile, "r+b")
+ fsize = os.path.getsize(binfile)
+ offval = offset & 0xFFFFFFFF
+ if (offval & 0x80000000):
+ offval = fsize - (0xFFFFFFFF - offval + 1)
+ fd.seek(offval)
+ bytearray = [ord(b) for b in fd.read(len)]
+ value = 0;
+ idx = len - 1;
+ while idx >= 0:
+ value = value << 8 | bytearray[idx]
+ idx = idx - 1
+ fd.close()
+ return value
+
+def patchDataInFile (binfile, offset, value, len=1):
+ fd = open(binfile, "r+b")
+ fsize = os.path.getsize(binfile)
+ offval = offset & 0xFFFFFFFF
+ if (offval & 0x80000000):
+ offval = fsize - (0xFFFFFFFF - offval + 1)
+ bytearray = []
+ idx = 0;
+ while idx < len:
+ bytearray.append(value & 0xFF)
+ value = value >> 8
+ idx = idx + 1
+ fd.seek(offval)
+ fd.write("".join(chr(b) for b in bytearray))
+ fd.close()
+ return len;
+
+
+class Symbols:
+ def __init__(self):
+ self.dictSymbolAddress = {}
+ self.dictGuidNameXref = {}
+ self.dictFfsOffset = {}
+ self.dictVariable = {}
+ self.dictModBase = {}
+ self.fdFile = None
+ self.string = ""
+ self.fdBase = 0xFFFFFFFF
+ self.fdSize = 0
+ self.index = 0
+ self.parenthesisOpenSet = '([{<'
+ self.parenthesisCloseSet = ')]}>'
+
+ def getFdFile (self):
+ return self.fdFile
+
+ def getFdSize (self):
+ return self.fdSize
+
+ def createDicts (self, fvDir, fvNames):
+ if not os.path.isdir(fvDir):
+ raise Exception ("'%s' is not a valid directory!" % FvDir)
+
+ xrefFile = os.path.join(fvDir, "Guid.xref")
+ if not os.path.exists(xrefFile):
+ raise Exception("Cannot open GUID Xref file '%s'!" % xrefFile)
+
+ self.dictGuidNameXref = {}
+ self.parseGuidXrefFile(xrefFile)
+
+ fvList = fvNames.split(":")
+ fdBase = fvList.pop()
+ if len(fvList) == 0:
+ fvList.append(fdBase)
+
+ fdFile = os.path.join(fvDir, fdBase.strip() + ".fd")
+ if not os.path.exists(fdFile):
+ raise Exception("Cannot open FD file '%s'!" % fdFile)
+
+ self.fdFile = fdFile
+ self.fdSize = os.path.getsize(fdFile)
+
+ infFile = os.path.join(fvDir, fvList[0].strip()) + ".inf"
+ if not os.path.exists(infFile):
+ raise Exception("Cannot open INF file '%s'!" % infFile)
+
+ self.parseInfFile(infFile)
+
+ self.dictVariable = {}
+ self.dictVariable["FDSIZE"] = self.fdSize
+ self.dictVariable["FDBASE"] = self.fdBase
+
+ self.dictSymbolAddress = {}
+ self.dictFfsOffset = {}
+ for file in fvList:
+
+ fvFile = os.path.join(fvDir, file.strip()) + ".Fv"
+ mapFile = fvFile + ".map"
+ if not os.path.exists(mapFile):
+ raise Exception("Cannot open MAP file '%s'!" % mapFile)
+
+ self.parseFvMapFile(mapFile)
+
+ fvTxtFile = fvFile + ".txt"
+ if not os.path.exists(fvTxtFile):
+ raise Exception("Cannot open FV TXT file '%s'!" % fvTxtFile)
+
+ self.parseFvTxtFile(fvTxtFile)
+
+ ffsDir = os.path.join(fvDir, "Ffs")
+ if (os.path.isdir(ffsDir)):
+ for item in os.listdir(ffsDir):
+ if len(item) <= 0x24:
+ continue
+ mapFile =os.path.join(ffsDir, item, "%s.map" % item[0:0x24])
+ if not os.path.exists(mapFile):
+ continue
+ self.parseModMapFile(item[0x24:], mapFile)
+
+ return 0
+
+ def getFvOffsetInFd(self, fvFile):
+ fvHandle = open(fvFile, "r+b")
+ fdHandle = open(self.fdFile, "r+b")
+ offset = fdHandle.read().find(fvHandle.read(0x70))
+ fvHandle.close()
+ fdHandle.close()
+ if offset == -1:
+ raise Exception("Could not locate FV file %s in FD!" % fvFile)
+ return offset
+
+ def parseInfFile(self, infFile):
+ fvOffset = self.getFvOffsetInFd(infFile[0:-4] + ".Fv")
+ fdIn = open(infFile, "r")
+ rptLine = fdIn.readline()
+ self.fdBase = 0xFFFFFFFF
+ while (rptLine != "" ):
+ #EFI_BASE_ADDRESS = 0xFFFDF400
+ match = re.match("^EFI_BASE_ADDRESS\s*=\s*(0x[a-fA-F0-9]+)", rptLine)
+ if match is not None:
+ self.fdBase = int(match.group(1), 16) - fvOffset
+ rptLine = fdIn.readline()
+ fdIn.close()
+ if self.fdBase == 0xFFFFFFFF:
+ raise Exception("Could not find EFI_BASE_ADDRESS in INF file!" % fvFile)
+ return 0
+
+ def parseFvTxtFile(self, fvTxtFile):
+ fvOffset = self.getFvOffsetInFd(fvTxtFile[0:-4])
+ fdIn = open(fvTxtFile, "r")
+ rptLine = fdIn.readline()
+ while (rptLine != "" ):
+ match = re.match("(0x[a-fA-F0-9]+)\s([0-9a-fA-F\-]+)", rptLine)
+ if match is not None:
+ self.dictFfsOffset[match.group(2)] = "0x%08X" % (int(match.group(1), 16) + fvOffset)
+ rptLine = fdIn.readline()
+ fdIn.close()
+ return 0
+
+ def parseFvMapFile(self, mapFile):
+ fdIn = open(mapFile, "r")
+ rptLine = fdIn.readline()
+ modName = ""
+ while (rptLine != "" ):
+ if rptLine[0] != ' ':
+ #DxeIpl (Fixed Flash Address, BaseAddress=0x00fffb4310, EntryPoint=0x00fffb4958)
+ #(GUID=86D70125-BAA3-4296-A62F-602BEBBB9081 .textbaseaddress=0x00fffb4398 .databaseaddress=0x00fffb4178)
+ match = re.match("([_a-zA-Z0-9\-]+)\s\(.+BaseAddress=(0x[0-9a-fA-F]+),\s+EntryPoint=(0x[0-9a-fA-F]+)\)", rptLine)
+ if match is not None:
+ modName = match.group(1)
+ if len(modName) == 36:
+ modName = self.dictGuidNameXref[modName.upper()]
+ self.dictModBase['%s:BASE' % modName] = int (match.group(2), 16)
+ self.dictModBase['%s:ENTRY' % modName] = int (match.group(3), 16)
+ match = re.match("\(GUID=([A-Z0-9\-]+)\s+\.textbaseaddress=(0x[0-9a-fA-F]+)\s+\.databaseaddress=(0x[0-9a-fA-F]+)\)", rptLine)
+ if match is not None:
+ modName = match.group(1)
+ if len(modName) == 36:
+ modName = self.dictGuidNameXref[modName.upper()]
+ self.dictModBase['%s:TEXT' % modName] = int (match.group(2), 16)
+ self.dictModBase['%s:DATA' % modName] = int (match.group(3), 16)
+ else:
+ # 0x00fff8016c __ModuleEntryPoint
+ match = re.match("^\s+(0x[a-z0-9]+)\s+([_a-zA-Z0-9]+)", rptLine)
+ if match is not None:
+ self.dictSymbolAddress["%s:%s"%(modName, match.group(2))] = match.group(1)
+ rptLine = fdIn.readline()
+ fdIn.close()
+ return 0
+
+ def parseModMapFile(self, moduleName, mapFile):
+ modSymbols = {}
+ fdIn = open(mapFile, "r")
+ reportLine = fdIn.readline()
+ if reportLine.strip().find("Archive member included because of file (symbol)") != -1:
+ #GCC
+ # 0x0000000000001d55 IoRead8
+ patchMapFileMatchString = "\s+(0x[0-9a-fA-F]{16})\s+([^\s][^0x][_a-zA-Z0-9\-]+)\s"
+ matchKeyGroupIndex = 2
+ matchSymbolGroupIndex = 1
+ moduleEntryPoint = "_ModuleEntryPoint"
+ else:
+ #MSFT
+ #0003:00000190 _gComBase 00007a50 SerialPo
+ patchMapFileMatchString = "^\s[0-9a-fA-F]{4}:[0-9a-fA-F]{8}\s+(\w+)\s+([0-9a-fA-F]{8}\s+)"
+ matchKeyGroupIndex = 1
+ matchSymbolGroupIndex = 2
+ moduleEntryPoint = "__ModuleEntryPoint"
+ while (reportLine != "" ):
+ match = re.match(patchMapFileMatchString, reportLine)
+ if match is not None:
+ modSymbols[match.group(matchKeyGroupIndex)] = match.group(matchSymbolGroupIndex)
+ reportLine = fdIn.readline()
+ fdIn.close()
+
+ if not moduleEntryPoint in modSymbols:
+ return 1
+
+ modEntry = '%s:%s' % (moduleName,moduleEntryPoint)
+ if not modEntry in self.dictSymbolAddress:
+ modKey = '%s:ENTRY' % moduleName
+ if modKey in self.dictModBase:
+ baseOffset = self.dictModBase['%s:ENTRY' % moduleName] - int(modSymbols[moduleEntryPoint], 16)
+ else:
+ return 2
+ else:
+ baseOffset = int(self.dictSymbolAddress[modEntry], 16) - int(modSymbols[moduleEntryPoint], 16)
+ for symbol in modSymbols:
+ fullSym = "%s:%s" % (moduleName, symbol)
+ if not fullSym in self.dictSymbolAddress:
+ self.dictSymbolAddress[fullSym] = "0x00%08x" % (baseOffset+ int(modSymbols[symbol], 16))
+ return 0
+
+ def parseGuidXrefFile(self, xrefFile):
+ fdIn = open(xrefFile, "r")
+ rptLine = fdIn.readline()
+ while (rptLine != "" ):
+ match = re.match("([0-9a-fA-F\-]+)\s([_a-zA-Z0-9]+)", rptLine)
+ if match is not None:
+ self.dictGuidNameXref[match.group(1).upper()] = match.group(2)
+ rptLine = fdIn.readline()
+ fdIn.close()
+ return 0
+
+ def getCurr(self):
+ try:
+ return self.string[self.index]
+ except Exception:
+ return ''
+
+ def isLast(self):
+ return self.index == len(self.string)
+
+ def moveNext(self):
+ self.index += 1
+
+ def skipSpace(self):
+ while not self.isLast():
+ if self.getCurr() in ' \t':
+ self.moveNext()
+ else:
+ return
+
+ 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)
+
+ def parseSingleOp(self):
+ self.skipSpace()
+ char = self.getCurr()
+ if char == '~':
+ self.moveNext()
+ return ~self.parseBrace()
+ else:
+ return self.parseValue()
+
+ 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()
+
+ 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
+
+ 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
+
+ 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)
+
+ def parseExpr(self):
+ return self.parseAddMinus()
+
+ def getResult(self):
+ value = self.parseExpr()
+ self.skipSpace()
+ if not self.isLast():
+ raise Exception("Unexpected character found '%s'" % self.getCurr())
+ return 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
+
+ def getVariable(self, var):
+ value = self.dictVariable.get(var, None)
+ if value == None:
+ raise Exception("Unrecognized variable '%s'" % var)
+ return value
+
+ def getNumber(self, var):
+ var = var.strip()
+ if var.startswith('0x'): # HEX
+ value = int(var, 16)
+ else:
+ value = int(var, 10)
+ return 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)
+
+ def toAddress(self, value):
+ if value < self.fdSize:
+ value = value + self.fdBase
+ return value
+
+ def toOffset(self, value):
+ if value > self.fdBase:
+ value = value - self.fdBase
+ return 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
+
+ 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
+
+ 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
+
+def usage():
+ print "Usage: \n\tPatchFv FvBuildDir [FvFileBaseNames:]FdFileBaseNameToPatch \"Offset, Value\""
+
+def main():
+ #
+ # Parse the options and args
+ #
+ symTables = Symbols()
+
+ if len(sys.argv) < 4:
+ Usage()
+ return 1
+
+ if symTables.createDicts(sys.argv[1], sys.argv[2]) != 0:
+ print "ERROR: Failed to create symbol dictionary!!"
+ return 2
+
+ fdFile = symTables.getFdFile()
+ fdSize = symTables.getFdSize()
+
+ try:
+ comment = ""
+ for fvFile in sys.argv[3:]:
+ 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
+ params.append (symTables.evaluate(item, isOffset))
+
+ 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())
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