The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/include/minix/config.h

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    1 #ifndef _CONFIG_H
    2 #define _CONFIG_H
    3 
    4 /* Minix release and version numbers. */
    5 #define OS_RELEASE "3"
    6 #define OS_VERSION "1.1"
    7 
    8 /* This file sets configuration parameters for the MINIX kernel, FS, and PM.
    9  * It is divided up into two main sections.  The first section contains
   10  * user-settable parameters.  In the second section, various internal system
   11  * parameters are set based on the user-settable parameters.
   12  *
   13  * Parts of config.h have been moved to sys_config.h, which can be included
   14  * by other include files that wish to get at the configuration data, but
   15  * don't want to pollute the users namespace. Some editable values have
   16  * gone there.
   17  *
   18  */
   19 
   20 /* The MACHINE (called _MINIX_MACHINE) setting can be done
   21  * in <minix/machine.h>.
   22  */
   23 #include <minix/sys_config.h>
   24 
   25 #define MACHINE      _MINIX_MACHINE
   26 
   27 #define IBM_PC       _MACHINE_IBM_PC
   28 #define SUN_4        _MACHINE_SUN_4
   29 #define SUN_4_60     _MACHINE_SUN_4_60
   30 #define ATARI        _MACHINE_ATARI
   31 #define MACINTOSH    _MACHINE_MACINTOSH
   32 
   33 /* Number of slots in the process table for non-kernel processes. The number
   34  * of system processes defines how many processes with special privileges 
   35  * there can be. User processes share the same properties and count for one. 
   36  *
   37  * These can be changed in sys_config.h.
   38  */
   39 #define NR_PROCS          _NR_PROCS 
   40 #define NR_SYS_PROCS      _NR_SYS_PROCS
   41 
   42 #if _MINIX_SMALL
   43 
   44 #define NR_BUFS 100
   45 #define NR_BUF_HASH 128
   46 
   47 #else
   48 
   49 /* The buffer cache should be made as large as you can afford. */
   50 #if (MACHINE == IBM_PC && _WORD_SIZE == 2)
   51 #define NR_BUFS           40    /* # blocks in the buffer cache */
   52 #define NR_BUF_HASH       64    /* size of buf hash table; MUST BE POWER OF 2*/
   53 #endif
   54 
   55 #if (MACHINE == IBM_PC && _WORD_SIZE == 4)
   56 #define NR_BUFS         1200    /* # blocks in the buffer cache */
   57 #define NR_BUF_HASH     2048    /* size of buf hash table; MUST BE POWER OF 2*/
   58 #endif
   59 
   60 #if (MACHINE == SUN_4_60)
   61 #define NR_BUFS          512    /* # blocks in the buffer cache (<=1536) */
   62 #define NR_BUF_HASH      512    /* size of buf hash table; MUST BE POWER OF 2*/
   63 #endif
   64 
   65 #endif  /* _MINIX_SMALL */
   66 
   67 /* Number of controller tasks (/dev/cN device classes). */
   68 #define NR_CTRLRS          2
   69 
   70 /* Enable or disable the second level file system cache on the RAM disk. */
   71 #define ENABLE_CACHE2      0
   72 
   73 /* Enable or disable swapping processes to disk. */
   74 #define ENABLE_SWAP        1
   75 
   76 /* Include or exclude an image of /dev/boot in the boot image. 
   77  * Please update the makefile in /usr/src/tools/ as well.
   78  */
   79 #define ENABLE_BOOTDEV     0    /* load image of /dev/boot at boot time */
   80 
   81 /* DMA_SECTORS may be increased to speed up DMA based drivers. */
   82 #define DMA_SECTORS        1    /* DMA buffer size (must be >= 1) */
   83 
   84 /* Include or exclude backwards compatibility code. */
   85 #define ENABLE_BINCOMPAT   0    /* for binaries using obsolete calls */
   86 #define ENABLE_SRCCOMPAT   0    /* for sources using obsolete calls */
   87 
   88 /* Which processes should receive diagnostics from the kernel and system? 
   89  * Directly sending it to TTY only displays the output. Sending it to the
   90  * log driver will cause the diagnostics to be buffered and displayed.
   91  * Messages are sent by src/lib/sysutil/kputc.c to these processes, in
   92  * the order of this array, which must be terminated by NONE. This is used
   93  * by drivers and servers that printf().
   94  * The kernel does this for its own kprintf() in kernel/utility.c, also using
   95  * this array, but a slightly different mechanism.
   96  */
   97 #define OUTPUT_PROCS_ARRAY      { TTY_PROC_NR, LOG_PROC_NR, NONE }
   98 
   99 /* NR_CONS, NR_RS_LINES, and NR_PTYS determine the number of terminals the
  100  * system can handle.
  101  */
  102 #define NR_CONS            4    /* # system consoles (1 to 8) */
  103 #define NR_RS_LINES        4    /* # rs232 terminals (0 to 4) */
  104 #define NR_PTYS            32   /* # pseudo terminals (0 to 64) */
  105 
  106 /*===========================================================================*
  107  *      There are no user-settable parameters after this line                *
  108  *===========================================================================*/
  109 /* Set the CHIP type based on the machine selected. The symbol CHIP is actually
  110  * indicative of more than just the CPU.  For example, machines for which
  111  * CHIP == INTEL are expected to have 8259A interrrupt controllers and the
  112  * other properties of IBM PC/XT/AT/386 types machines in general. */
  113 #define INTEL             _CHIP_INTEL   /* CHIP type for PC, XT, AT, 386 and clones */
  114 #define M68000            _CHIP_M68000  /* CHIP type for Atari, Amiga, Macintosh    */
  115 #define SPARC             _CHIP_SPARC   /* CHIP type for SUN-4 (e.g. SPARCstation)  */
  116 
  117 /* Set the FP_FORMAT type based on the machine selected, either hw or sw    */
  118 #define FP_NONE  _FP_NONE       /* no floating point support                */
  119 #define FP_IEEE  _FP_IEEE       /* conform IEEE floating point standard     */
  120 
  121 /* _MINIX_CHIP is defined in sys_config.h. */
  122 #define CHIP    _MINIX_CHIP
  123 
  124 /* _MINIX_FP_FORMAT is defined in sys_config.h. */
  125 #define FP_FORMAT       _MINIX_FP_FORMAT
  126 
  127 /* _ASKDEV and _FASTLOAD are defined in sys_config.h. */
  128 #define ASKDEV _ASKDEV
  129 #define FASTLOAD _FASTLOAD
  130 
  131 #endif /* _CONFIG_H */

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