ArmPkg/ArmDmaLib: add support for fixed host-to-device DMA offset

[mirror_edk2.git] / ArmPkg / ArmPkg.dec

diff --git a/ArmPkg/ArmPkg.dec b/ArmPkg/ArmPkg.dec
index 3cdb5da3d4f3fcdfa8e13f465d0a25fc04c9c515..090ed99513669e32aee2f083e1dcf8327be40842 100644 (file)
--- a/ArmPkg/ArmPkg.dec
+++ b/ArmPkg/ArmPkg.dec
@@ -134,6 +134,14 @@
   gArmTokenSpaceGuid.PcdFdSize|0|UINT32|0x0000002C\r
   gArmTokenSpaceGuid.PcdFvSize|0|UINT32|0x0000002E\r
 \r
+  #\r
+  # Value to add to a host address to obtain a device address, using\r
+  # unsigned 64-bit integer arithmetic on both ARM and AArch64. This\r
+  # means we can rely on truncation on overflow to specify negative\r
+  # offsets.\r
+  #\r
+  gArmTokenSpaceGuid.PcdArmDmaDeviceOffset|0x0|UINT64|0x0000044\r
+\r
 [PcdsFixedAtBuild.common, PcdsPatchableInModule.common]\r
   gArmTokenSpaceGuid.PcdFdBaseAddress|0|UINT64|0x0000002B\r
   gArmTokenSpaceGuid.PcdFvBaseAddress|0|UINT64|0x0000002D\r