diff options
Diffstat (limited to 'EdkCompatibilityPkg/Foundation/Efi/Protocol/DevicePath/DevicePath.h')
-rw-r--r-- | EdkCompatibilityPkg/Foundation/Efi/Protocol/DevicePath/DevicePath.h | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/EdkCompatibilityPkg/Foundation/Efi/Protocol/DevicePath/DevicePath.h b/EdkCompatibilityPkg/Foundation/Efi/Protocol/DevicePath/DevicePath.h new file mode 100644 index 0000000000..4991e2b012 --- /dev/null +++ b/EdkCompatibilityPkg/Foundation/Efi/Protocol/DevicePath/DevicePath.h @@ -0,0 +1,67 @@ +/*++
+
+Copyright (c) 2004, Intel Corporation
+All rights reserved. This program and the accompanying materials
+are licensed and made available under the terms and conditions of the BSD License
+which accompanies this distribution. The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+Module Name:
+
+ DevicePath.h
+
+Abstract:
+
+ The device path protocol as defined in EFI 1.0.
+
+ The device path represents a programatic path to a device. It's the view
+ from a software point of view. It also must persist from boot to boot, so
+ it can not contain things like PCI bus numbers that change from boot to boot.
+
+
+--*/
+
+#ifndef _DEVICE_PATH_H_
+#define _DEVICE_PATH_H_
+
+//
+// Device Path protocol
+//
+#define EFI_DEVICE_PATH_PROTOCOL_GUID \
+ { \
+ 0x9576e91, 0x6d3f, 0x11d2, 0x8e, 0x39, 0x0, 0xa0, 0xc9, 0x69, 0x72, 0x3b \
+ }
+
+#pragma pack(push, 1)
+
+typedef struct {
+ UINT8 Type;
+ UINT8 SubType;
+ UINT8 Length[2];
+} EFI_DEVICE_PATH_PROTOCOL;
+
+#pragma pack(pop)
+
+#define EFI_END_ENTIRE_DEVICE_PATH 0xff
+#define EFI_END_ENTIRE_DEVICE_PATH_SUBTYPE 0xff
+#define EFI_END_INSTANCE_DEVICE_PATH 0x01
+#define EFI_END_DEVICE_PATH_LENGTH (sizeof (EFI_DEVICE_PATH_PROTOCOL))
+
+#define EfiDevicePathNodeLength(a) (((a)->Length[0]) | ((a)->Length[1] << 8))
+#define EfiNextDevicePathNode(a) ((EFI_DEVICE_PATH_PROTOCOL *) (((UINT8 *) (a)) + EfiDevicePathNodeLength (a)))
+
+#define EfiDevicePathType(a) (((a)->Type) & 0x7f)
+#define EfiIsDevicePathEndType(a) (EfiDevicePathType (a) == 0x7f)
+
+#define EfiIsDevicePathEndSubType(a) ((a)->SubType == EFI_END_ENTIRE_DEVICE_PATH_SUBTYPE)
+#define EfiIsDevicePathEndInstanceSubType(a) ((a)->SubType == EFI_END_INSTANCE_DEVICE_PATH)
+
+#define EfiIsDevicePathEnd(a) (EfiIsDevicePathEndType (a) && EfiIsDevicePathEndSubType (a))
+#define EfiIsDevicePathEndInstance(a) (EfiIsDevicePathEndType (a) && EfiIsDevicePathEndInstanceSubType (a))
+
+extern EFI_GUID gEfiDevicePathProtocolGuid;
+
+#endif
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