Nevermind, I re-read through the FDF spec and I found the answer: A PCD's value is positional in the FDF file. Last one set should be the value.
2.2.7 PCD Names Unique PCDs are identified using the format to identify the named PCD: The PCD's Name (PcdName) is defined as PCD Token Space Guid C name and the PCD C name - separated by a period "." character. PCD C names are used in C code and must follow the C variable name rules. A PCD's values are positional with in the FDF file, and may be set by either the automatic setting grammar defined in this specification, or through SET statements. Once the PCD's value has been defined, it may be used anywhere within the FDF file; they are not limited to sections that they are defined in. PCD values may be absolute, values defined by macros, or expressions. PcdTokenSpaceGuidCName.PcdCName Garrett Kirkendall [Description: Description: Description: purple] SMTS Firmware Engineer | AMD Technology & Engineering 7171 Southwest Parkway, Austin, TX 78735 USA [Description: Description: Description: image004] facebook<https://www.facebook.com/AMD> | amd.com<http://www.amd.com/> From: Kirkendall, Garrett Sent: Tuesday, April 01, 2014 10:46 AM To: edk2-devel@lists.sourceforge.net; edk2-buildtools-de...@lists.sourceforge.net Subject: Crazy FDF file PCD question. I'm trying to contemplate what happens if I have multiple [FD] sections in my FDF file and they both assign the same Fixed PCD. What value gets built into the code. I haven't studied through the build tools code, but I assume one of them finally makes it into an AutoGen.c/AutoGen.h. This would make one of the FD sections have the correct address, and one will have the wrong address. Example: [FD.MAIN1] BaseAddress = 0x00000000|gSomeTokenSpaceGuid.PcdFixedSomeFdBaseAddress ... [FD.MAIN2] BaseAddress = 0x00100000|gSomeTokenSpaceGuid.PcdFixedSomeFdBaseAddress ... Garrett Kirkendall [Description: Description: Description: purple] SMTS Firmware Engineer | AMD Technology & Engineering 7171 Southwest Parkway, Austin, TX 78735 USA [Description: Description: Description: image004] facebook<https://www.facebook.com/AMD> | amd.com<http://www.amd.com/>
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