ArmVirtPkg: allow setting Firmware Version from build command line

ArmVirtXen.dsc initializes
gEfiMdeModulePkgTokenSpaceGuid.PcdFirmwareVersionString with with the
value of the variable "FIRMWARE_VER".

Move that functionality to ArmVirt.dsc.inc to make it available to all
ArmVirt packages, and make it conditional: only set the PCD string if
FIRMWARE_VER is actually defined.

This allows specifying the firmware version string on the build command
line with -D FIRMARE_VER=...

Signed-off-by: Oliver Steffen <[email protected]>
Reviewed-by: Sami Mujawar <[email protected]>

Author: osteffenrh

ArmVirtPkg/ArmVirt.dsc.inc

@@ -282,6 +282,10 @@
   gEfiMdeModulePkgTokenSpaceGuid.PcdInstallAcpiSdtProtocol|TRUE
 
 [PcdsFixedAtBuild.common]
+!ifdef $(FIRMWARE_VER)
+  gEfiMdeModulePkgTokenSpaceGuid.PcdFirmwareVersionString|L"$(FIRMWARE_VER)"
+!endif
+
   gEfiMdePkgTokenSpaceGuid.PcdMaximumUnicodeStringLength|1000000
   gEfiMdePkgTokenSpaceGuid.PcdMaximumAsciiStringLength|1000000
   gEfiMdePkgTokenSpaceGuid.PcdMaximumLinkedListLength|0

ArmVirtPkg/ArmVirtXen.dsc

@@ -69,7 +69,6 @@
 ################################################################################
 
 [PcdsFixedAtBuild.common]
-  gEfiMdeModulePkgTokenSpaceGuid.PcdFirmwareVersionString|L"$(FIRMWARE_VER)"
 !if $(ARCH) == AARCH64
   gArmTokenSpaceGuid.PcdVFPEnabled|1
 !endif