-BaseAddress = 0x0|gEfiUnixPkgTokenSpaceGuid.PcdUnixFdBaseAddress #The base address of the FLASH Device.\r
-Size = 0x002a0000 #The size in bytes of the FLASH Device\r
+#\r
+# In OS X PEIMs are really XIP, so we need to make this address match the malloced \r
+# buffer for the FD (0x41000000). If this address does not match the FV will get\r
+# relocated in place (works, but not a great idea).\r
+#\r
+BaseAddress = 0x41000000|gEfiUnixPkgTokenSpaceGuid.PcdUnixFdBaseAddress #The base address of the FLASH Device.\r
+Size = 0x002a0000|gEfiUnixPkgTokenSpaceGuid.PcdUnixFirmwareFdSize #The size in bytes of the FLASH Device\r