1 /** @file 2 Deal with devices that just exist in memory space. 3 4 To follow the EFI driver model you need a root handle to start with. An 5 EFI driver will have a driver binding protocol (Supported, Start, Stop) 6 that is used to layer on top of a handle via a gBS->ConnectController. 7 The first handle has to just be in the system to make that work. For 8 PCI it is a PCI Root Bridge IO protocol that provides the root. 9 10 On an embedded system with MMIO device we need a handle to just 11 show up. That handle will have this protocol and a device path 12 protocol on it. 13 14 For an ethernet device the device path must contain a MAC address device path 15 node. 16 17 Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR> 18 19 This program and the accompanying materials 20 are licensed and made available under the terms and conditions of the BSD License 21 which accompanies this distribution. The full text of the license may be found at 22 http://opensource.org/licenses/bsd-license.php 23 24 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 25 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 26 27 **/ 28 29 #ifndef __EMBEDDED_DEVICE_PROTOCOL_H__ 30 #define __EMBEDDED_DEVICE_PROTOCOL_H__ 31 32 33 // 34 // Protocol GUID 35 // 36 // BF4B9D10-13EC-43dd-8880-E90B718F27DE 37 38 #define EMBEDDED_DEVICE_PROTOCOL_GUID \ 39 { 0xbf4b9d10, 0x13ec, 0x43dd, { 0x88, 0x80, 0xe9, 0xb, 0x71, 0x8f, 0x27, 0xde } } 40 41 42 43 typedef struct { 44 UINT16 VendorId; 45 UINT16 DeviceId; 46 UINT16 RevisionId; 47 UINT16 SubsystemId; 48 UINT16 SubsystemVendorId; 49 UINT8 ClassCode[3]; 50 UINT8 HeaderSize; 51 UINTN BaseAddress; 52 } EMBEDDED_DEVICE_PROTOCOL; 53 54 extern EFI_GUID gEmbeddedDeviceGuid; 55 56 #endif 57 58 59