2 * Copyright (C) 2014 Michael Brown <mbrown@fensystems.co.uk>.
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.
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.
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
20 FILE_LICENCE ( GPL2_OR_LATER );
22 #include <ipxe/efi/efi.h>
23 #include <ipxe/efi/efi_autoboot.h>
24 #include <ipxe/efi/Protocol/SimpleNetwork.h>
25 #include <usr/autoboot.h>
34 * Identify autoboot device
37 void efi_set_autoboot ( void ) {
38 EFI_BOOT_SERVICES *bs = efi_systab->BootServices;
40 EFI_SIMPLE_NETWORK_PROTOCOL *snp;
43 EFI_SIMPLE_NETWORK_MODE *mode;
46 /* Look for an SNP instance on the image's device handle */
47 if ( ( efirc = bs->OpenProtocol ( efi_loaded_image->DeviceHandle,
48 &efi_simple_network_protocol_guid,
49 &snp.interface, efi_image_handle,
51 EFI_OPEN_PROTOCOL_GET_PROTOCOL ))!=0){
52 DBGC ( efi_loaded_image, "EFI found no autoboot device\n" );
56 /* Record autoboot device */
58 set_autoboot_ll_addr ( &mode->CurrentAddress, mode->HwAddressSize );
59 DBGC ( efi_loaded_image, "EFI found autoboot link-layer address:\n" );
60 DBGC_HDA ( efi_loaded_image, 0, &mode->CurrentAddress,
61 mode->HwAddressSize );
64 bs->CloseProtocol ( efi_loaded_image->DeviceHandle,
65 &efi_simple_network_protocol_guid,
66 efi_image_handle, NULL );