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-rw-r--r--EmbeddedPkg/EmbeddedPkg.dec7
1 files changed, 7 insertions, 0 deletions
diff --git a/EmbeddedPkg/EmbeddedPkg.dec b/EmbeddedPkg/EmbeddedPkg.dec
index e6861cb59c..0be102ad9c 100644
--- a/EmbeddedPkg/EmbeddedPkg.dec
+++ b/EmbeddedPkg/EmbeddedPkg.dec
@@ -205,3 +205,10 @@
[PcdsFixedAtBuild.common, PcdsDynamic.common]
gEmbeddedTokenSpaceGuid.PcdFdtDevicePaths|L""|VOID*|0x00000055
+
+ #
+ # Value to add to a host address to obtain a device address, using
+ # unsigned 64-bit integer arithmetic. This means we can rely on
+ # truncation on overflow to specify negative offsets.
+ #
+ gEmbeddedTokenSpaceGuid.PcdDmaDeviceOffset|0x0|UINT64|0x0000058