direct-io.hg

view tools/misc/mbootpack/mb_header.h @ 7477:5a7baecb1c70

Fix an issue for passing arguement from control panel to deivce model
for some arguemnt like 'localtime', 'isa', device model need an argument
"-localtime", instead of "-localtime 1"
Signed-off-by: Xiaofeng Ling <xiaofeng.ling@intel.com>
author kaf24@firebug.cl.cam.ac.uk
date Sun Oct 23 16:51:47 2005 +0100 (2005-10-23)
parents 445b12a7221a
children
line source
1 /*
2 * GRUB -- GRand Unified Bootloader
3 * Copyright (C) 2000 Free Software Foundation, Inc.
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
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.
18 */
20 /*
21 * MultiBoot Header description
22 */
24 struct multiboot_header
25 {
26 /* Must be MULTIBOOT_MAGIC - see below. */
27 unsigned magic;
29 /* Feature flags - see below. */
30 unsigned flags;
32 /*
33 * Checksum
34 *
35 * The above fields plus this one must equal 0 mod 2^32.
36 */
37 unsigned checksum;
39 /* These are only valid if MULTIBOOT_AOUT_KLUDGE is set. */
40 unsigned header_addr;
41 unsigned load_addr;
42 unsigned load_end_addr;
43 unsigned bss_end_addr;
44 unsigned entry_addr;
46 /* These are only valid if MULTIBOOT_VIDEO_MODE is set. */
47 unsigned mode_type;
48 unsigned width;
49 unsigned height;
50 unsigned depth;
51 };
53 /*
54 * The entire multiboot_header must be contained
55 * within the first MULTIBOOT_SEARCH bytes of the kernel image.
56 */
57 #define MULTIBOOT_SEARCH 8192
58 #define MULTIBOOT_FOUND(addr, len) \
59 (! ((addr) & 0x3) \
60 && (len) >= 12 \
61 && *((int *) (addr)) == MULTIBOOT_MAGIC \
62 && ! (*((unsigned *) (addr)) + *((unsigned *) (addr + 4)) \
63 + *((unsigned *) (addr + 8))) \
64 && (! (MULTIBOOT_AOUT_KLUDGE & *((int *) (addr + 4))) || (len) >= 32) \
65 && (! (MULTIBOOT_VIDEO_MODE & *((int *) (addr + 4))) || (len) >= 48))
67 /* Magic value identifying the multiboot_header. */
68 #define MULTIBOOT_MAGIC 0x1BADB002
70 /*
71 * Features flags for 'flags'.
72 * If a boot loader sees a flag in MULTIBOOT_MUSTKNOW set
73 * and it doesn't understand it, it must fail.
74 */
75 #define MULTIBOOT_MUSTKNOW 0x0000FFFF
77 /* currently unsupported flags... this is a kind of version number. */
78 #define MULTIBOOT_UNSUPPORTED 0x0000FFF8
80 /* Align all boot modules on i386 page (4KB) boundaries. */
81 #define MULTIBOOT_PAGE_ALIGN 0x00000001
83 /* Must pass memory information to OS. */
84 #define MULTIBOOT_MEMORY_INFO 0x00000002
86 /* Must pass video information to OS. */
87 #define MULTIBOOT_VIDEO_MODE 0x00000004
89 /* This flag indicates the use of the address fields in the header. */
90 #define MULTIBOOT_AOUT_KLUDGE 0x00010000