LXR linux/include/asm-xtensa/bootparam.h

   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
  61
  62