root/include/asm-xtensa/bootparam.h

INCLUDED FROM

/*
 * include/asm-xtensa/bootparam.h
 *
 * Definition of the Linux/Xtensa boot parameter structure
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 *
 * Copyright (C) 2001 - 2005  Tensilica Inc.
 *
 * (Concept borrowed from the 68K port)
 */

#ifndef _XTENSA_BOOTPARAM_H
#define _XTENSA_BOOTPARAM_H

#define BP_VERSION 0x0001

#define BP_TAG_COMMAND_LINE     0x1001  /* command line (0-terminated string)*/
#define BP_TAG_INITRD           0x1002  /* ramdisk addr and size (bp_meminfo) */
#define BP_TAG_MEMORY           0x1003  /* memory addr and size (bp_meminfo) */
#define BP_TAG_SERIAL_BAUSRATE  0x1004  /* baud rate of current console. */
#define BP_TAG_SERIAL_PORT      0x1005  /* serial device of current console */

#define BP_TAG_FIRST            0x7B0B  /* first tag with a version number */
#define BP_TAG_LAST             0x7E0B  /* last tag */

#ifndef __ASSEMBLY__

/* All records are aligned to 4 bytes */

typedef struct bp_tag {
  unsigned short id;            /* tag id */
  unsigned short size;          /* size of this record excluding the structure*/
  unsigned long data[0];        /* data */
} bp_tag_t;

typedef struct meminfo {
  unsigned long type;
  unsigned long start;
  unsigned long end;
} meminfo_t;

#define SYSMEM_BANKS_MAX 5

#define MEMORY_TYPE_CONVENTIONAL        0x1000
#define MEMORY_TYPE_NONE                0x2000

typedef struct sysmem_info {
  int nr_banks;
  meminfo_t bank[SYSMEM_BANKS_MAX];
} sysmem_info_t;

extern sysmem_info_t sysmem;

#endif
#endif