include/asm-arm/setup.h

   1 /*
   2  *  linux/include/asm/setup.h
   3  *
   4  *  Copyright (C) 1997-1999 Russell King
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  *
  10  *  Structure passed to kernel to tell it about the
  11  *  hardware it's running on.  See linux/Documentation/arm/Setup
  12  *  for more info.
  13  */
  14 #ifndef __ASMARM_SETUP_H
  15 #define __ASMARM_SETUP_H
  16
  17 /*
  18  * Usage:
  19  *  - do not go blindly adding fields, add them at the end
  20  *  - when adding fields, don't rely on the address until
  21  *    a patch from me has been released
  22  *  - unused fields should be zero (for future expansion)
  23  *  - this structure is relatively short-lived - only
  24  *    guaranteed to contain useful data in setup_arch()
  25  */
  26 #define COMMAND_LINE_SIZE 1024
  27
  28 struct param_struct {
  29     union {
  30         struct {
  31             unsigned long page_size;            /*  0 */
  32             unsigned long nr_pages;             /*  4 */
  33             unsigned long ramdisk_size;         /*  8 */
  34             unsigned long flags;                /* 12 */
  35 #define FLAG_READONLY   1
  36 #define FLAG_RDLOAD     4
  37 #define FLAG_RDPROMPT   8
  38             unsigned long rootdev;              /* 16 */
  39             unsigned long video_num_cols;       /* 20 */
  40             unsigned long video_num_rows;       /* 24 */
  41             unsigned long video_x;              /* 28 */
  42             unsigned long video_y;              /* 32 */
  43             unsigned long memc_control_reg;     /* 36 */
  44             unsigned char sounddefault;         /* 40 */
  45             unsigned char adfsdrives;           /* 41 */
  46             unsigned char bytes_per_char_h;     /* 42 */
  47             unsigned char bytes_per_char_v;     /* 43 */
  48             unsigned long pages_in_bank[4];     /* 44 */
  49             unsigned long pages_in_vram;        /* 60 */
  50             unsigned long initrd_start;         /* 64 */
  51             unsigned long initrd_size;          /* 68 */
  52             unsigned long rd_start;             /* 72 */
  53             unsigned long system_rev;           /* 76 */
  54             unsigned long system_serial_low;    /* 80 */
  55             unsigned long system_serial_high;   /* 84 */
  56             unsigned long mem_fclk_21285;       /* 88 */
  57         } s;
  58         char unused[256];
  59     } u1;
  60     union {
  61         char paths[8][128];
  62         struct {
  63             unsigned long magic;
  64             char n[1024 - sizeof(unsigned long)];
  65         } s;
  66     } u2;
  67     char commandline[COMMAND_LINE_SIZE];
  68 };
  69
  70 /*
  71  * Memory map description
  72  */
  73 #define NR_BANKS 4
  74
  75 struct meminfo {
  76         int nr_banks;
  77         unsigned long end;
  78         struct {
  79                 unsigned long start;
  80                 unsigned long size;
  81                 int           node;
  82         } bank[NR_BANKS];
  83 };
  84
  85 extern struct meminfo meminfo;
  86
  87 #endif