lib/libminlib/tools.h

   1 #ifndef _INCLUDE_TOOLS_H
   2 #define _INCLUDE_TOOLS_H 1
   3
   4 /* Constants describing the disk */
   5 #define SECTOR_SIZE     512
   6 #define SECTOR_SHIFT    9
   7 #define RATIO(b)        ((b)/SECTOR_SIZE)
   8 #define ISO_SECTOR_SIZE 2048
   9 #define ISO_PVD_OFFSET  16
  10 #define HRATIO          (SECTOR_SIZE / HCLICK_SIZE)
  11 #define PARAMSEC        1       /* sector containing boot parameters */
  12 #define DSKBASE         0x1E    /* floppy disk parameter vector */
  13 #define DSKPARSIZE      11      /* there are this many bytes of parameters */
  14 #define ESC             '\33'   /* escape key */
  15 #define HEADERSEG       0x0060  /* place for an array of struct exec's */
  16 #define MINIXSEG        0x0080  /* MINIX loaded here (rounded up to a click) */
  17 #define BOOTSEG         0x07C0  /* bootstraps are loaded here */
  18 #define SIGNATURE       0xAA55  /* proper bootstraps have this signature */
  19 #define SIGNATPOS       510     /* offset within bootblock */
  20 #define FREESEG         0x0800  /* Memory from FREESEG to cseg is free */
  21 #define MSEC_PER_TICK   55      /* 18.2 ticks per second */
  22
  23 /* Scan codes for four different keyboards (from kernel/keyboard.c) */
  24 #define DUTCH_EXT_SCAN    32    /* 'd' */
  25 #define OLIVETTI_SCAN     12    /* '=' key on olivetti */
  26 #define STANDARD_SCAN     13    /* '=' key on IBM */
  27 #define US_EXT_SCAN       22    /* 'u' */
  28
  29 /* Other */
  30 #define ROOT_INO ((ino_t) 1)    /* Inode nr of root dir. */
  31 #define IM_NAME_MAX       63
  32
  33 /* Variables */
  34 #ifndef EXTERN
  35 #define EXTERN extern
  36 #endif
  37
  38 typedef struct vector {
  39   u16_t offset;
  40   u16_t segment;
  41 } vector;
  42
  43 struct image_header {
  44   char name[IM_NAME_MAX + 1];   /* Null terminated. */
  45   struct exec process;
  46 };
  47
  48 EXTERN vector rem_part;         /* boot partition table entry */
  49 EXTERN u16_t cseg, dseg;        /* code and data segment of the boot program */
  50 EXTERN u32_t runsize;           /* size of this program */
  51 EXTERN u16_t device;            /* drive being booted from */
  52 EXTERN u16_t heads, sectors;    /* the drive's number of heads and sectors */
  53 extern u16_t eqscancode;        /* Set by peek/getch() if they see a '=' */
  54
  55 /* Sticky attributes */
  56 #define E_SPECIAL       0x01    /* These are known to the program */
  57 #define E_DEV           0x02    /* The value is a device name */
  58 #define E_RESERVED      0x04    /* May not be set by user, e.g. scancode */
  59 #define E_STICKY        0x07    /* Don't go once set */
  60
  61 /* Volatile attributes */
  62 #define E_VAR           0x08    /* Variable */
  63 #define E_FUNCTION      0x10    /* Function definition */
  64
  65 typedef struct environment {
  66   struct environment *next;
  67   char flags;
  68   char *name;                   /* name = value */
  69   char *arg;                    /* name(arg) {value} */
  70   char *value;
  71   char *defval;                 /* Safehouse for default values */
  72 } environment;
  73
  74 /* External variables */
  75 EXTERN environment *env;        /* Lists the environment */
  76 EXTERN int fsok;                /* True if the boot device contains an FS */
  77 EXTERN u32_t lowsec;            /* Offset to the file system on the boot dev */
  78
  79 #if defined(_MINIX) || defined(__minix) || defined(__ACK__)
  80 /* Prototypes */
  81 off_t r_super(void);
  82 void r_stat(Ino_t _inum, struct stat *_stp );
  83 ino_t r_readdir(char *_name );
  84 off_t r_vir2abs(off_t _virblk );
  85 ino_t r_lookup(Ino_t _cwd, char *_path );
  86 #endif
  87
  88 #ifdef _MONHEAD
  89 void readerr(off_t _sec, int _err );
  90 int numprefix(char *_s, char **_ps );
  91 int numeric(char *_s );
  92 dev_t name2dev(char *_name );
  93 int delay(char *_msec );
  94 char *unix_err(int _err );
  95 void init_cache(void);
  96 void invalidate_cache(void);
  97 char *b_value(char *_name );
  98 void raw_copy(int _doff, int _dseg, int _soff, int _sseg, int _count);
  99 void raw_clear(int _off, int _seg, int _count);
 100 void bootstrap(int _device, int _partoff, int _partseg);
 101
 102 long a2l(char *_a );
 103 char *ul2a(u32_t _n );
 104 char *u2a(int _n1 );
 105
 106 /* Functions defined in monhead.s and usable by other files. */
 107 void reset_video(int color);
 108 int dev_geometry(void);
 109 u16_t get_ext_memsize(void);
 110 u16_t get_low_memsize(void);
 111 u16_t get_processor(void);
 112 u32_t get_tick(void);
 113 u16_t get_video(void);
 114 u16_t get_word(int _off, int _seg);
 115 int getchar(void);
 116 void minix(void);
 117 void minix86(int _kcs, int _kds, char *_bpar, int _psize);
 118 void minix386(int _kcs, int _kds, char *_bpar, int _psize);
 119 int peekchar(void);
 120 void put_word(int _off, int _seg, int _word);
 121 int putchar(char _c);
 122 int readsectors(int _off, int _seg, off_t _adr, int _ct);
 123 void reboot(void);
 124 void relocate(void);
 125 int writesectors(int _off, int _seg, off_t _adr, int _ct);
 126 #endif
 127
 128 #endif