Linux Kernel  3.7.1
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bootparam.h
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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 
33 typedef 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 
39 typedef 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 
50 typedef struct sysmem_info {
51  int nr_banks;
54 
55 extern sysmem_info_t sysmem;
56 
57 #endif
58 #endif
59 
60 
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