diff options
Diffstat (limited to 'OldMdePkg/Include/Protocol/DevicePath.h')
| -rw-r--r-- | OldMdePkg/Include/Protocol/DevicePath.h | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/OldMdePkg/Include/Protocol/DevicePath.h b/OldMdePkg/Include/Protocol/DevicePath.h new file mode 100644 index 0000000000..d01999904f --- /dev/null +++ b/OldMdePkg/Include/Protocol/DevicePath.h @@ -0,0 +1,94 @@ +/** @file
+ 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.
+
+ Copyright (c) 2006, 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
+
+**/
+
+#ifndef __EFI_DEVICE_PATH_PROTOCOL_H__
+#define __EFI_DEVICE_PATH_PROTOCOL_H__
+
+//
+// Device Path protocol
+//
+#define EFI_DEVICE_PATH_PROTOCOL_GUID \
+ { \
+ 0x9576e91, 0x6d3f, 0x11d2, {0x8e, 0x39, 0x0, 0xa0, 0xc9, 0x69, 0x72, 0x3b } \
+ }
+
+#pragma pack(1)
+
+typedef struct {
+ UINT8 Type;
+ UINT8 SubType;
+ UINT8 Length[2];
+} EFI_DEVICE_PATH_PROTOCOL;
+
+#pragma pack()
+
+#define EFI_DP_TYPE_MASK 0x7F
+#define EFI_DP_TYPE_UNPACKED 0x80
+#define END_DEVICE_PATH_TYPE 0x7f
+
+#define EFI_END_ENTIRE_DEVICE_PATH 0xff
+#define EFI_END_ENTIRE_DEVICE_PATH_SUBTYPE 0xff
+#define EFI_END_INSTANCE_DEVICE_PATH 0x01
+#define END_ENTIRE_DEVICE_PATH_SUBTYPE EFI_END_ENTIRE_DEVICE_PATH_SUBTYPE
+#define END_INSTANCE_DEVICE_PATH_SUBTYPE EFI_END_INSTANCE_DEVICE_PATH
+
+#define EFI_END_DEVICE_PATH_LENGTH (sizeof (EFI_DEVICE_PATH_PROTOCOL))
+#define END_DEVICE_PATH_LENGTH EFI_END_DEVICE_PATH_LENGTH
+
+#define DP_IS_END_TYPE(a)
+#define DP_IS_END_SUBTYPE(a) (((a)->SubType == END_ENTIRE_DEVICE_PATH_SUBTYPE)
+#define DevicePathSubType(a) ((a)->SubType)
+#define IsDevicePathUnpacked(a) ((a)->Type & EFI_DP_TYPE_UNPACKED)
+
+#define EfiDevicePathNodeLength(a) (((a)->Length[0]) | ((a)->Length[1] << 8))
+#define DevicePathNodeLength(a) (EfiDevicePathNodeLength(a))
+#define EfiNextDevicePathNode(a) ((EFI_DEVICE_PATH_PROTOCOL *) (((UINT8 *) (a)) + EfiDevicePathNodeLength (a)))
+#define NextDevicePathNode(a) (EfiNextDevicePathNode(a))
+
+#define EfiDevicePathType(a) (((a)->Type) & EFI_DP_TYPE_MASK)
+#define DevicePathType(a) (EfiDevicePathType(a))
+#define EfiIsDevicePathEndType(a) (EfiDevicePathType (a) == END_DEVICE_PATH_TYPE)
+#define IsDevicePathEndType(a) (EfiIsDevicePathEndType(a))
+
+
+#define EfiIsDevicePathEndSubType(a) ((a)->SubType == EFI_END_ENTIRE_DEVICE_PATH_SUBTYPE)
+#define IsDevicePathEndSubType(a) (EfiIsDevicePathEndSubType(a))
+#define EfiIsDevicePathEndInstanceSubType(a) ((a)->SubType == EFI_END_INSTANCE_DEVICE_PATH)
+
+#define EfiIsDevicePathEnd(a) (EfiIsDevicePathEndType (a) && EfiIsDevicePathEndSubType (a))
+#define IsDevicePathEnd(a) (EfiIsDevicePathEnd(a))
+#define EfiIsDevicePathEndInstance(a) (EfiIsDevicePathEndType (a) && EfiIsDevicePathEndInstanceSubType (a))
+
+
+#define SetDevicePathNodeLength(a,l) { \
+ (a)->Length[0] = (UINT8) (l); \
+ (a)->Length[1] = (UINT8) ((l) >> 8); \
+ }
+
+#define SetDevicePathEndNode(a) { \
+ (a)->Type = END_DEVICE_PATH_TYPE; \
+ (a)->SubType = END_ENTIRE_DEVICE_PATH_SUBTYPE; \
+ (a)->Length[0] = sizeof(EFI_DEVICE_PATH_PROTOCOL); \
+ (a)->Length[1] = 0; \
+ }
+
+extern EFI_GUID gEfiDevicePathProtocolGuid;
+
+#endif
|