extlinux/main.c: space change
[syslinux.git] / memdisk / acpi.h
blob732d116a2b5128ad06b475d10ca95302bcd12d11
1 /*
2 * Copyright (C) 2006 Michael Brown <mbrown@fensystems.co.uk>.
3 * This file derived almost in its entirety from gPXE.
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation; either version 2 of the
8 * License, or any later version.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 /** @file
22 * ACPI data structures
26 #include <stdint.h>
28 /**
29 * An ACPI description header
31 * This is the structure common to the start of all ACPI system
32 * description tables.
34 MEMDISK_PACKED_PREFIX
35 struct acpi_description_header {
36 /** ACPI signature (4 ASCII characters) */
37 char signature[4];
38 /** Length of table, in bytes, including header */
39 uint32_t length;
40 /** ACPI Specification minor version number */
41 uint8_t revision;
42 /** To make sum of entire table == 0 */
43 uint8_t checksum;
44 /** OEM identification */
45 char oem_id[6];
46 /** OEM table identification */
47 char oem_table_id[8];
48 /** OEM revision number */
49 uint32_t oem_revision;
50 /** ASL compiler vendor ID */
51 char asl_compiler_id[4];
52 /** ASL compiler revision number */
53 uint32_t asl_compiler_revision;
54 } MEMDISK_PACKED_POSTFIX;