[efi] Add the "snpnet" driver

Add a new network driver that consumes the EFI Simple Network
Protocol.  Also add a bus driver that can find the Simple Network
Protocol that iPXE was loaded from; the resulting behavior is similar
to the "undionly" driver for BIOS systems.

Signed-off-by: Michael Brown <mcb30@ipxe.org>

1 files changed, 88 insertions, 0 deletions

diff --git a/src/include/ipxe/efi/Protocol/LoadedImage.h b/src/include/ipxe/efi/Protocol/LoadedImage.h
new file mode 100755
index 0000000..12e5e2d
--- /dev/null
+++ b/src/include/ipxe/efi/Protocol/LoadedImage.h
@@ -0,0 +1,88 @@
+/** @file
+  UEFI 2.0 Loaded image protocol definition.
+
+  Every EFI driver and application is passed an image handle when it is loaded.
+  This image handle will contain a Loaded Image Protocol.
+
+  Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
+  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.
+
+**/
+
+#ifndef __LOADED_IMAGE_PROTOCOL_H__
+#define __LOADED_IMAGE_PROTOCOL_H__
+
+#define EFI_LOADED_IMAGE_PROTOCOL_GUID \
+  { \
+    0x5B1B31A1, 0x9562, 0x11d2, {0x8E, 0x3F, 0x00, 0xA0, 0xC9, 0x69, 0x72, 0x3B } \
+  }
+
+#define EFI_LOADED_IMAGE_DEVICE_PATH_PROTOCOL_GUID \
+  { \
+    0xbc62157e, 0x3e33, 0x4fec, {0x99, 0x20, 0x2d, 0x3b, 0x36, 0xd7, 0x50, 0xdf } \
+  }
+
+///
+/// Protocol GUID defined in EFI1.1.
+///
+#define LOADED_IMAGE_PROTOCOL   EFI_LOADED_IMAGE_PROTOCOL_GUID
+
+///
+/// EFI_SYSTEM_TABLE & EFI_IMAGE_UNLOAD are defined in EfiApi.h
+///
+#define EFI_LOADED_IMAGE_PROTOCOL_REVISION  0x1000
+
+///
+/// Revision defined in EFI1.1.
+///
+#define EFI_LOADED_IMAGE_INFORMATION_REVISION    EFI_LOADED_IMAGE_PROTOCOL_REVISION
+
+///
+/// Can be used on any image handle to obtain information about the loaded image.
+///
+typedef struct {
+  UINT32            Revision;       ///< Defines the revision of the EFI_LOADED_IMAGE_PROTOCOL structure.
+                                    ///< All future revisions will be backward compatible to the current revision.
+  EFI_HANDLE        ParentHandle;   ///< Parent image's image handle. NULL if the image is loaded directly from
+                                    ///< the firmware's boot manager.
+  EFI_SYSTEM_TABLE  *SystemTable;   ///< the image's EFI system table pointer.
+
+  //
+  // Source location of image
+  //
+  EFI_HANDLE        DeviceHandle;   ///< The device handle that the EFI Image was loaded from.
+  EFI_DEVICE_PATH_PROTOCOL  *FilePath;  ///< A pointer to the file path portion specific to DeviceHandle
+                                        ///< that the EFI Image was loaded from.
+  VOID              *Reserved;      ///< Reserved. DO NOT USE.
+
+  //
+  // Images load options
+  //
+  UINT32            LoadOptionsSize;///< The size in bytes of LoadOptions.
+  VOID              *LoadOptions;   ///< A pointer to the image's binary load options.
+
+  //
+  // Location of where image was loaded
+  //
+  VOID              *ImageBase;     ///< The base address at which the image was loaded.
+  UINT64            ImageSize;      ///< The size in bytes of the loaded image.
+  EFI_MEMORY_TYPE   ImageCodeType;  ///< The memory type that the code sections were loaded as.
+  EFI_MEMORY_TYPE   ImageDataType;  ///< The memory type that the data sections were loaded as.
+  EFI_IMAGE_UNLOAD  Unload;
+} EFI_LOADED_IMAGE_PROTOCOL;
+
+//
+// For backward-compatible with EFI1.1.
+//
+typedef EFI_LOADED_IMAGE_PROTOCOL EFI_LOADED_IMAGE;
+
+extern EFI_GUID gEfiLoadedImageProtocolGuid;
+extern EFI_GUID gEfiLoadedImageDevicePathProtocolGuid;
+
+#endif