include/asm-arm/setup.h

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