projects/linux·blob v2.6.21 · refs

61 lines · 1.5 KiB

1/*
2 * include/asm-xtensa/bootparam.h
3 *
4 * Definition of the Linux/Xtensa boot parameter structure
5 *
6 * This file is subject to the terms and conditions of the GNU General Public
7 * License. See the file "COPYING" in the main directory of this archive
8 * for more details.
9 *
10 * Copyright (C) 2001 - 2005 Tensilica Inc.
11 *
12 * (Concept borrowed from the 68K port)
13 */
14
15#ifndef _XTENSA_BOOTPARAM_H
16#define _XTENSA_BOOTPARAM_H
17
18#define BP_VERSION 0x0001
19
20#define BP_TAG_COMMAND_LINE 0x1001 /* command line (0-terminated string)*/
21#define BP_TAG_INITRD 0x1002 /* ramdisk addr and size (bp_meminfo) */
22#define BP_TAG_MEMORY 0x1003 /* memory addr and size (bp_meminfo) */
23#define BP_TAG_SERIAL_BAUSRATE 0x1004 /* baud rate of current console. */
24#define BP_TAG_SERIAL_PORT 0x1005 /* serial device of current console */
25
26#define BP_TAG_FIRST 0x7B0B /* first tag with a version number */
27#define BP_TAG_LAST 0x7E0B /* last tag */
28
29#ifndef __ASSEMBLY__
30
31/* All records are aligned to 4 bytes */
32
33typedef struct bp_tag {
34 unsigned short id; /* tag id */
35 unsigned short size; /* size of this record excluding the structure*/
36 unsigned long data[0]; /* data */
37} bp_tag_t;
38
39typedef struct meminfo {
40 unsigned long type;
41 unsigned long start;
42 unsigned long end;
43} meminfo_t;
44
45#define SYSMEM_BANKS_MAX 5
46
47#define MEMORY_TYPE_CONVENTIONAL 0x1000
48#define MEMORY_TYPE_NONE 0x2000
49
50typedef struct sysmem_info {
51 int nr_banks;
52 meminfo_t bank[SYSMEM_BANKS_MAX];
53} sysmem_info_t;
54
55extern sysmem_info_t sysmem;
56
57#endif
58#endif
59
60
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