[infiniband] Do not use GRH for local paths
[ipxe.git] / src / interface / efi / efi_autoboot.c
1 /*
2 * Copyright (C) 2014 Michael Brown <mbrown@fensystems.co.uk>.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License as
6 * published by the Free Software Foundation; either version 2 of the
7 * License, or any later version.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
17 * 02110-1301, USA.
18 *
19 * You can also choose to distribute this program under the terms of
20 * the Unmodified Binary Distribution Licence (as given in the file
21 * COPYING.UBDL), provided that you have satisfied its requirements.
22 */
23
24 FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
25
26 #include <ipxe/efi/efi.h>
27 #include <ipxe/efi/efi_autoboot.h>
28 #include <ipxe/efi/Protocol/SimpleNetwork.h>
29 #include <usr/autoboot.h>
30
31 /** @file
32 *
33 * EFI autoboot device
34 *
35 */
36
37 /**
38 * Identify autoboot device
39 *
40 */
41 void efi_set_autoboot ( void ) {
42 EFI_BOOT_SERVICES *bs = efi_systab->BootServices;
43 union {
44 EFI_SIMPLE_NETWORK_PROTOCOL *snp;
45 void *interface;
46 } snp;
47 EFI_SIMPLE_NETWORK_MODE *mode;
48 EFI_STATUS efirc;
49
50 /* Look for an SNP instance on the image's device handle */
51 if ( ( efirc = bs->OpenProtocol ( efi_loaded_image->DeviceHandle,
52 &efi_simple_network_protocol_guid,
53 &snp.interface, efi_image_handle,
54 NULL,
55 EFI_OPEN_PROTOCOL_GET_PROTOCOL ))!=0){
56 DBGC ( efi_loaded_image, "EFI found no autoboot device\n" );
57 return;
58 }
59
60 /* Record autoboot device */
61 mode = snp.snp->Mode;
62 set_autoboot_ll_addr ( &mode->CurrentAddress, mode->HwAddressSize );
63 DBGC ( efi_loaded_image, "EFI found autoboot link-layer address:\n" );
64 DBGC_HDA ( efi_loaded_image, 0, &mode->CurrentAddress,
65 mode->HwAddressSize );
66
67 /* Close protocol */
68 bs->CloseProtocol ( efi_loaded_image->DeviceHandle,
69 &efi_simple_network_protocol_guid,
70 efi_image_handle, NULL );
71 }