[Patch][edk2-stable201908] BaseTools: Fix incremental build genmake issue

["Bob Feng" <bob.c.feng@intel.com>]

BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=2090

This is a regression issue introduced by commit e8449e.
This patch is going to fix this issue.

Cc: Liming Gao <liming.gao@intel.com>
Signed-off-by: Bob Feng <bob.c.feng@intel.com>
---
 BaseTools/Source/Python/build/build.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/BaseTools/Source/Python/build/build.py b/BaseTools/Source/Python/build/build.py
index 2c10670a69..0406ac314b 100755
--- a/BaseTools/Source/Python/build/build.py
+++ b/BaseTools/Source/Python/build/build.py
@@ -1217,11 +1217,10 @@ class Build():
             # for target which must generate AutoGen code and makefile
             mqueue = mp.Queue()
             for m in AutoGenObject.GetAllModuleInfo:
                 mqueue.put(m)
 
-            AutoGenObject.DataPipe.DataContainer = {"FfsCommand":FfsCommand}
             AutoGenObject.DataPipe.DataContainer = {"CommandTarget": self.Target}
             self.Progress.Start("Generating makefile and code")
             data_pipe_file = os.path.join(AutoGenObject.BuildDir, "GlobalVar_%s_%s.bin" % (str(AutoGenObject.Guid),AutoGenObject.Arch))
             AutoGenObject.DataPipe.dump(data_pipe_file)
             autogen_rt,errorcode = self.StartAutoGen(mqueue, AutoGenObject.DataPipe, self.SkipAutoGen, PcdMaList, GlobalData.gCacheIR)
@@ -1736,10 +1735,12 @@ class Build():
                         if Ma.PcdIsDriver:
                             Ma.PlatformInfo = Pa
                             Ma.Workspace = Wa
                             PcdMaList.append(Ma)
                         self.BuildModules.append(Ma)
+                    Pa.DataPipe.DataContainer = {"FfsCommand":CmdListDict}
+                    Pa.DataPipe.DataContainer = {"Workspace_timestamp": Wa._SrcTimeStamp}
                     self._BuildPa(self.Target, Pa, FfsCommand=CmdListDict,PcdMaList=PcdMaList)
 
                 # Create MAP file when Load Fix Address is enabled.
                 if self.Target in ["", "all", "fds"]:
                     for Arch in Wa.ArchList:
-- 
2.20.1.windows.1