X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=ArmPkg%2FArmPkg.dec;h=090ed99513669e32aee2f083e1dcf8327be40842;hb=8b17ad862c235b3226c3d118e5b2f929860ef7ec;hp=3cdb5da3d4f3fcdfa8e13f465d0a25fc04c9c515;hpb=8a1f2378d74390ddfe35c70f68e0c8b03bf84089;p=mirror_edk2.git

diff --git a/ArmPkg/ArmPkg.dec b/ArmPkg/ArmPkg.dec
index 3cdb5da3d4..090ed99513 100644
--- a/ArmPkg/ArmPkg.dec
+++ b/ArmPkg/ArmPkg.dec
@@ -134,6 +134,14 @@
   gArmTokenSpaceGuid.PcdFdSize|0|UINT32|0x0000002C
   gArmTokenSpaceGuid.PcdFvSize|0|UINT32|0x0000002E
 
+  #
+  # Value to add to a host address to obtain a device address, using
+  # unsigned 64-bit integer arithmetic on both ARM and AArch64. This
+  # means we can rely on truncation on overflow to specify negative
+  # offsets.
+  #
+  gArmTokenSpaceGuid.PcdArmDmaDeviceOffset|0x0|UINT64|0x0000044
+
 [PcdsFixedAtBuild.common, PcdsPatchableInModule.common]
   gArmTokenSpaceGuid.PcdFdBaseAddress|0|UINT64|0x0000002B
   gArmTokenSpaceGuid.PcdFvBaseAddress|0|UINT64|0x0000002D