X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=MdePkg%2FInclude%2FProtocol%2FSerialIo.h;h=d7458e0eaa1f0ae4c12683651cdfcf4b12c7622e;hb=a6508c051b680c94e8823070c655a857487e862e;hp=89a73409d9a0e9acccb4f32de645905667420a6a;hpb=53f2d96e2e17ec78b040729127456ad9c65ac5c6;p=mirror_edk2.git

diff --git a/MdePkg/Include/Protocol/SerialIo.h b/MdePkg/Include/Protocol/SerialIo.h
index 89a73409d9..d7458e0eaa 100644
--- a/MdePkg/Include/Protocol/SerialIo.h
+++ b/MdePkg/Include/Protocol/SerialIo.h
@@ -25,8 +25,19 @@
     0xBB25CF6F, 0xF1D4, 0x11D2, {0x9A, 0x0C, 0x00, 0x90, 0x27, 0x3F, 0xC1, 0xFD } \
   }
 
+//
+// Protocol GUID defined in EFI1.1.
+// 
+#define SERIAL_IO_PROTOCOL  EFI_SERIAL_IO_PROTOCOL_GUID
+
 typedef struct _EFI_SERIAL_IO_PROTOCOL EFI_SERIAL_IO_PROTOCOL;
 
+
+//
+// Backward-compatible with EFI1.1.
+// 
+typedef EFI_SERIAL_IO_PROTOCOL  SERIAL_IO_INTERFACE;
+
 //
 // Serial IO Data structures
 //
@@ -246,8 +257,8 @@ typedef struct {
   UINT32  StopBits;
 } EFI_SERIAL_IO_MODE;
 
-#define SERIAL_IO_INTERFACE_REVISION    0x00010000
-#define EFI_SERIAL_IO_PROTOCOL_REVISION SERIAL_IO_INTERFACE_REVISION
+#define EFI_SERIAL_IO_PROTOCOL_REVISION    0x00010000
+#define SERIAL_IO_INTERFACE_REVISION  EFI_SERIAL_IO_PROTOCOL_REVISION
 
 struct _EFI_SERIAL_IO_PROTOCOL {
   UINT32                      Revision;