src/arch/i386/interface/pcbios/abft.c

   1 /*
   2  * Copyright (C) 2007 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., 675 Mass Ave, Cambridge, MA 02139, USA.
  17  */
  18
  19 FILE_LICENCE ( GPL2_OR_LATER );
  20
  21 #include <realmode.h>
  22 #include <gpxe/aoe.h>
  23 #include <gpxe/netdevice.h>
  24 #include <gpxe/abft.h>
  25
  26 /** @file
  27  *
  28  * AoE Boot Firmware Table
  29  *
  30  */
  31
  32 #define abftab __use_data16 ( abftab )
  33 /** The aBFT used by gPXE */
  34 struct abft_table __data16 ( abftab ) __attribute__ (( aligned ( 16 ) )) = {
  35         /* ACPI header */
  36         .acpi = {
  37                 .signature = ABFT_SIG,
  38                 .length = sizeof ( abftab ),
  39                 .revision = 1,
  40                 .oem_id = "FENSYS",
  41                 .oem_table_id = "gPXE",
  42         },
  43 };
  44
  45 /**
  46  * Fill in all variable portions of aBFT
  47  *
  48  * @v aoe               AoE session
  49  */
  50 void abft_fill_data ( struct aoe_session *aoe ) {
  51
  52         /* Fill in boot parameters */
  53         abftab.shelf = aoe->major;
  54         abftab.slot = aoe->minor;
  55         memcpy ( abftab.mac, aoe->netdev->ll_addr, sizeof ( abftab.mac ) );
  56
  57         /* Update checksum */
  58         acpi_fix_checksum ( &abftab.acpi );
  59
  60         DBG ( "AoE boot firmware table:\n" );
  61         DBG_HD ( &abftab, sizeof ( abftab ) );
  62 }