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
51