abft.c

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00001 /*
00002  * Copyright (C) 2007 Michael Brown <mbrown@fensystems.co.uk>.
00003  *
00004  * This program is free software; you can redistribute it and/or
00005  * modify it under the terms of the GNU General Public License as
00006  * published by the Free Software Foundation; either version 2 of the
00007  * License, or any later version.
00008  *
00009  * This program is distributed in the hope that it will be useful, but
00010  * WITHOUT ANY WARRANTY; without even the implied warranty of
00011  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012  * General Public License for more details.
00013  *
00014  * You should have received a copy of the GNU General Public License
00015  * along with this program; if not, write to the Free Software
00016  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
00017  */
00018 
00019 FILE_LICENCE ( GPL2_OR_LATER );
00020 
00021 #include <realmode.h>
00022 #include <gpxe/aoe.h>
00023 #include <gpxe/netdevice.h>
00024 #include <gpxe/abft.h>
00025 
00026 /** @file
00027  *
00028  * AoE Boot Firmware Table
00029  *
00030  */
00031 
00032 #define abftab __use_data16 ( abftab )
00033 /** The aBFT used by gPXE */
00034 struct abft_table __data16 ( abftab ) __attribute__ (( aligned ( 16 ) )) = {
00035         /* ACPI header */
00036         .acpi = {
00037                 .signature = ABFT_SIG,
00038                 .length = sizeof ( abftab ),
00039                 .revision = 1,
00040                 .oem_id = "FENSYS",
00041                 .oem_table_id = "gPXE",
00042         },
00043 };
00044 
00045 /**
00046  * Fill in all variable portions of aBFT
00047  *
00048  * @v aoe               AoE session
00049  */
00050 void abft_fill_data ( struct aoe_session *aoe ) {
00051 
00052         /* Fill in boot parameters */
00053         abftab.shelf = aoe->major;
00054         abftab.slot = aoe->minor;
00055         memcpy ( abftab.mac, aoe->netdev->ll_addr, sizeof ( abftab.mac ) );
00056 
00057         /* Update checksum */
00058         acpi_fix_checksum ( &abftab.acpi );
00059 
00060         DBG ( "AoE boot firmware table:\n" );
00061         DBG_HD ( &abftab, sizeof ( abftab ) );
00062 }