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