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Make sure the PCD dxe service driver can handle the case where no PEIM is using any dynamic PCD entry and the PEI phase PCD database is empty.

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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@388 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
qwang12
2006-06-02 05:28:18 +00:00
parent e74da3e30a
commit 3496595d7b
5 changed files with 27 additions and 21 deletions
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23
EdkModulePkg/Universal/PCD/Dxe/Service.c
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@@ -282,13 +282,24 @@ BuildPcdDxeDataBase (
ASSERT (mPcdDatabase != NULL);
GuidHob = GetFirstGuidHob (&gPcdDataBaseHobGuid);
ASSERT (GuidHob != NULL);
PeiDatabase = (PEI_PCD_DATABASE *) GET_GUID_HOB_DATA (GuidHob);
//
// Copy PCD Entries refereneced in PEI phase to PCD DATABASE
//
CopyMem (&mPcdDatabase->PeiDb, PeiDatabase, sizeof (PEI_PCD_DATABASE));
if (GuidHob != NULL) {
//
// We will copy over the PEI phase's PCD Database.
//
// If no PEIMs use dynamic Pcd Entry, the Pcd Service PEIM
// should not be included at all. So the GuidHob could
// be NULL. If it is NULL, we just copy over the DXE Default
// Value to PCD Database.
//
PeiDatabase = (PEI_PCD_DATABASE *) GET_GUID_HOB_DATA (GuidHob);
//
// Copy PCD Entries refereneced in PEI phase to PCD DATABASE
//
CopyMem (&mPcdDatabase->PeiDb, PeiDatabase, sizeof (PEI_PCD_DATABASE));
}
//
// Copy PCD Entries with default value to PCD DATABASE