1 /** @file 2 XenIo protocol to abstract arch specific details 3 4 The Xen implementations for the Intel and ARM archictures differ in the way 5 the base address of the grant table is communicated to the guest. The former 6 uses a virtual PCI device, while the latter uses a device tree node. 7 In order to allow the XenBusDxe UEFI driver to be reused for the non-PCI 8 Xen implementation, this abstract protocol can be installed on a handle 9 with the appropriate base address. 10 11 Copyright (C) 2014, Linaro Ltd. 12 13 This program and the accompanying materials 14 are licensed and made available under the terms and conditions of the BSD License 15 which accompanies this distribution. The full text of the license may be found at 16 http://opensource.org/licenses/bsd-license.php 17 18 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 19 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 20 21 **/ 22 23 #ifndef __PROTOCOL_XENIO_H__ 24 #define __PROTOCOL_XENIO_H__ 25 26 #include <IndustryStandard/Xen/xen.h> 27 28 #define XENIO_PROTOCOL_GUID \ 29 {0x6efac84f, 0x0ab0, 0x4747, {0x81, 0xbe, 0x85, 0x55, 0x62, 0x59, 0x04, 0x49}} 30 31 /// 32 /// Forward declaration 33 /// 34 typedef struct _XENIO_PROTOCOL XENIO_PROTOCOL; 35 36 /// 37 /// Protocol structure 38 /// 39 struct _XENIO_PROTOCOL { 40 // 41 // Protocol data fields 42 // 43 EFI_PHYSICAL_ADDRESS GrantTableAddress; 44 }; 45 46 extern EFI_GUID gXenIoProtocolGuid; 47 48 #endif 49