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_BAUDRATE 0x1004 /* baud rate of current console. */
24 #define BP_TAG_SERIAL_PORT 0x1005 /* serial device of current console */
25 #define BP_TAG_FDT 0x1006 /* flat device tree addr */
26
27 #define BP_TAG_FIRST 0x7B0B /* first tag with a version number */
28 #define BP_TAG_LAST 0x7E0B /* last tag */
29
30 #ifndef __ASSEMBLY__
31
32 /* All records are aligned to 4 bytes */
33
34 typedef struct bp_tag {
35 unsigned short id; /* tag id */
36 unsigned short size; /* size of this record excluding the structure*/
37 unsigned long data[0]; /* data */
38 } bp_tag_t;
39
40 struct bp_meminfo {
41 unsigned long type;
42 unsigned long start;
43 unsigned long end;
44 };
45
46 #define MEMORY_TYPE_CONVENTIONAL 0x1000
47 #define MEMORY_TYPE_NONE 0x2000
48
49 #endif
50 #endif