1/*
2 * Copyright (C) 2008 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
19FILE_LICENCE ( GPL2_OR_LATER );
20
21#include <errno.h>
22#include <gpxe/smbios.h>
23#include <gpxe/efi/efi.h>
24#include <gpxe/efi/Guid/SmBios.h>
25
26/** @file
27 *
28 * gPXE SMBIOS API for EFI
29 *
30 */
31
32/** SMBIOS configuration table */
33static struct smbios_entry *smbios_entry;
34EFI_USE_TABLE ( EFI_SMBIOS_TABLE, &smbios_entry, 0 );
35
36/**
37 * Find SMBIOS
38 *
39 * @v smbios		SMBIOS entry point descriptor structure to fill in
40 * @ret rc		Return status code
41 */
42static int efi_find_smbios ( struct smbios *smbios ) {
43
44	if ( ! smbios_entry ) {
45		DBG ( "No SMBIOS table provided\n" );
46		return -ENODEV;
47	}
48
49	if ( smbios_entry->signature != SMBIOS_SIGNATURE ) {
50		DBG ( "Invalid SMBIOS signature\n" );
51		return -ENODEV;
52	}
53
54	smbios->address = phys_to_user ( smbios_entry->smbios_address );
55	smbios->len = smbios_entry->smbios_len;
56	smbios->count = smbios_entry->smbios_count;
57	DBG ( "Found SMBIOS v%d.%d entry point at %p (%x+%zx)\n",
58	      smbios_entry->major, smbios_entry->minor, smbios_entry,
59	      smbios_entry->smbios_address, smbios->len );
60
61	return 0;
62}
63
64PROVIDE_SMBIOS ( efi, find_smbios, efi_find_smbios );
65