72 lines
2.2 KiB
C
72 lines
2.2 KiB
C
/*
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* Copyright (C) 2014 Michael Brown <mbrown@fensystems.co.uk>.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*
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* You can also choose to distribute this program under the terms of
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* the Unmodified Binary Distribution Licence (as given in the file
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* COPYING.UBDL), provided that you have satisfied its requirements.
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*/
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FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
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#include <ipxe/efi/efi.h>
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#include <ipxe/efi/efi_autoboot.h>
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#include <ipxe/efi/Protocol/SimpleNetwork.h>
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#include <usr/autoboot.h>
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/** @file
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*
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* EFI autoboot device
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*
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*/
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/**
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* Identify autoboot device
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*
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*/
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void efi_set_autoboot ( void ) {
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EFI_BOOT_SERVICES *bs = efi_systab->BootServices;
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union {
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EFI_SIMPLE_NETWORK_PROTOCOL *snp;
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void *interface;
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} snp;
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EFI_SIMPLE_NETWORK_MODE *mode;
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EFI_STATUS efirc;
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/* Look for an SNP instance on the image's device handle */
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if ( ( efirc = bs->OpenProtocol ( efi_loaded_image->DeviceHandle,
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&efi_simple_network_protocol_guid,
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&snp.interface, efi_image_handle,
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NULL,
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EFI_OPEN_PROTOCOL_GET_PROTOCOL ))!=0){
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DBGC ( efi_loaded_image, "EFI found no autoboot device\n" );
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return;
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}
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/* Record autoboot device */
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mode = snp.snp->Mode;
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set_autoboot_ll_addr ( &mode->CurrentAddress, mode->HwAddressSize );
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DBGC ( efi_loaded_image, "EFI found autoboot link-layer address:\n" );
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DBGC_HDA ( efi_loaded_image, 0, &mode->CurrentAddress,
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mode->HwAddressSize );
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/* Close protocol */
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bs->CloseProtocol ( efi_loaded_image->DeviceHandle,
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&efi_simple_network_protocol_guid,
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efi_image_handle, NULL );
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}
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