[edk2-devel] [PATCH V4] BaseTools:Add the spare space FV image size checker

[Fan, ZhijuX]

REF:https://bugzilla.tianocore.org/show_bug.cgi?id=2654

If FV is placed in FD region, its FV image size is fixed.
When FV image size exceeds it, it will trig the build break.
To alert the developer to adjust FV image size earlier,
I request to add new checker for the the spare FV space.
When the spare FV space is less than the specified threshold,
build tool will report the error.

This checker is the optional.
It can be enabled by -D FV_SPARE_SPACE_THRESHOLD=10000.
Macro is the value of the spare space threshold size.
It can be decimal or hex format. If it is enabled,
BaseTools will check every FV with the fixed size.
If FV doesn't meet with the size requirement,
Build tool will report error message to say there is no
enough spare space.

Cc: Liming Gao <liming.gao at intel.com>
Cc: Bob Feng <bob.c.feng at intel.com>
Signed-off-by: Zhiju.Fan <zhijux.fan at intel.com>
---
 Determine the value of Threshold and FvDir

 BaseTools/Source/Python/Common/BuildToolError.py |  2 +
 BaseTools/Source/Python/build/build.py           | 47 ++++++++++
 2 files changed, 49 insertions(+)

diff --git a/BaseTools/Source/Python/Common/BuildToolError.py b/BaseTools/Source/Python/Common/BuildToolError.py
index ecc83d0f48..21549683cd 100644
--- a/BaseTools/Source/Python/Common/BuildToolError.py
+++ b/BaseTools/Source/Python/Common/BuildToolError.py
@@ -64,6 +64,8 @@ COMMAND_FAILURE = 0x7000
 
 PERMISSION_FAILURE = 0x8000
 
+FV_FREESIZE_ERROR = 0x9000
+
 CODE_ERROR = 0xC0DE
 
 AUTOGEN_ERROR = 0xF000
diff --git a/BaseTools/Source/Python/build/build.py b/BaseTools/Source/Python/build/build.py
index bec848a7b2..c19be67254 100755
--- a/BaseTools/Source/Python/build/build.py
+++ b/BaseTools/Source/Python/build/build.py
@@ -25,6 +25,7 @@ import traceback
 import multiprocessing
 from threading import Thread,Event,BoundedSemaphore
 import threading
+from linecache import getlines
 from subprocess import Popen,PIPE, STDOUT
 from collections import OrderedDict, defaultdict
 
@@ -1413,6 +1414,9 @@ class Build():
         if Target == 'fds':
             if GenFdsApi(AutoGenObject.GenFdsCommandDict, self.Db):
                 EdkLogger.error("build", COMMAND_FAILURE)
+            Threshold = self.GetFreeSizeThreshold()
+            if Threshold:
+                self.CheckFreeSizeThreshold(Threshold, AutoGenObject.FvDir)
             return True
 
         # run
@@ -2311,6 +2315,9 @@ class Build():
                         GenFdsStart = time.time()
                         if GenFdsApi(Wa.GenFdsCommandDict, self.Db):
                             EdkLogger.error("build", COMMAND_FAILURE)
+                        Threshold = self.GetFreeSizeThreshold()
+                        if Threshold:
+                            self.CheckFreeSizeThreshold(Threshold, Wa.FvDir)
 
                         #
                         # Create MAP file for all platform FVs after GenFds.
@@ -2322,6 +2329,46 @@ class Build():
                     #
                     self._SaveMapFile(MapBuffer, Wa)
                 self.CreateGuidedSectionToolsFile(Wa)
+
+    ## GetFreeSizeThreshold()
+    #
+    #   @retval int             Threshold value
+    #
+    def GetFreeSizeThreshold(self):
+        Threshold = None
+        Threshold_Str = GlobalData.gCommandLineDefines.get('FV_SPARE_SPACE_THRESHOLD')
+        if Threshold_Str:
+            try:
+                if Threshold_Str.lower().startswith('0x'):
+                    Threshold = int(Threshold_Str, 16)
+                else:
+                    Threshold = int(Threshold_Str)
+            except:
+                EdkLogger.warn("build", 'incorrect value for FV_SPARE_SPACE_THRESHOLD %s. It can be decimal or hex format' % Threshold_Str)
+        return Threshold
+
+    def CheckFreeSizeThreshold(self, Threshold=None, FvDir=None):
+        if not isinstance(Threshold, int):
+            return
+        if not isinstance(FvDir, str) or not FvDir:
+            return
+        FdfParserObject = GlobalData.gFdfParser
+        FvRegionNameList = [FvName for FvName in FdfParserObject.Profile.FvDict if FdfParserObject.Profile.FvDict[FvName].FvRegionInFD]
+        for FvName in FdfParserObject.Profile.FvDict:
+            if FvName in FvRegionNameList:
+                FvSpaceInfoFileName = os.path.join(FvDir, FvName.upper() + '.Fv.map')
+                if os.path.exists(FvSpaceInfoFileName):
+                    FileLinesList = getlines(FvSpaceInfoFileName)
+                    for Line in FileLinesList:
+                        NameValue = Line.split('=')
+                        if len(NameValue) == 2 and NameValue[0].strip() == 'EFI_FV_SPACE_SIZE':
+                            FreeSizeValue = int(NameValue[1].strip(), 0)
+                            if FreeSizeValue < Threshold:
+                                EdkLogger.error("build", FV_FREESIZE_ERROR,
+                                                'Freespace value %d of %s FV is smaller than threshold, The value of FV_SPARE_SPACE_THRESHOLD is %d' % (
+                                                    FreeSizeValue, FvName, Threshold))
+                            break
+
     ## Generate GuidedSectionTools.txt in the FV directories.
     #
     def CreateGuidedSectionToolsFile(self,Wa):
-- 
2.14.1.windows.1


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