arch/x86/kernel/platform/i86pc/include/sys/cram.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*      Copyright (c) 1990, 1991 UNIX System Laboratories, Inc. */
  23 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989, 1990 AT&T   */
  24 /*        All Rights Reserved   */
  25
  26 #ifndef _SYS_CRAM_H
  27 #define _SYS_CRAM_H
  28
  29 #include <sys/types.h>
  30 #include <sys/ksynch.h>
  31 #include <sys/kmem.h>
  32
  33 #ifdef  __cplusplus
  34 extern "C" {
  35 #endif
  36
  37 /*
  38  * Defines for accessing the PC AT CMOS ram.
  39  */
  40
  41 #define CMOS_ADDR       0x70    /* I/O port address for CMOS ram address */
  42 #define CMOS_DATA       0x71    /* I/O port address for CMOS ram data */
  43
  44 #define DSB             0x0e    /* Diagnostic status byte ram address */
  45 #define SSB             0x0f    /* Shutdown status byte ram address */
  46 #define DDTB            0x10    /* Diskette drive type byte ram address */
  47 #define FDTB            0x12    /* Fixed disk type byte ram address */
  48 #define EB              0x14    /* Equipment byte ram address */
  49 #define BMLOW           0x15    /* Base mem size low byte ram address */
  50 #define BMHIGH          0x16    /* Base mem size high byte ram address */
  51 #define EMLOW           0x17    /* Expansion mem size low byte ram address */
  52 #define EMHIGH          0x18    /* Expansion mem size high byte ram address */
  53 #define DCEB            0x19    /* Drive C Extended byte ram address */
  54 #define DDEB            0x1a    /* Drive D Extended byte ram address */
  55 #define CKSUMLOW        0x2e    /* Checksum low byte ram address */
  56 #define CKSUMHIGH       0x2f    /* Checksum high byte ram address */
  57 #define EMLOW2          0x30    /* Expansion mem size low byte ram address */
  58 #define EMHIGH2         0x31    /* Expansion mem size high byte ram address */
  59 #define DCB             0x32    /* Date century byte ram address */
  60 #define IF              0x33    /* Information flag ram address */
  61
  62 /*
  63  * ioctls for accessing CMOS ram.
  64  */
  65 #define CMOSIOC ('C' << 8)
  66
  67 #define CMOSREAD        (CMOSIOC | 0x01)
  68 #define CMOSWRITE       (CMOSIOC | 0x02)
  69
  70 extern unsigned char    CMOSread();
  71
  72 /* Ports for interacting with chip at */
  73
  74 #define CMOSADDR        0x70    /* Use to select RAM address */
  75 #define CMOSDATA        0x71    /* R/W data */
  76
  77 /* Number of cmos bytes */
  78
  79 #define CMOSSIZE        0x40    /* 64 addressable bytes in chip */
  80
  81 /* Addresses of interest */
  82
  83 #define CMOSDIAG        0x0e    /* Diagnostic Status */
  84 #define CMOSFDT         0x10    /* Floppy Disk Type */
  85 #define CMOSHDT         0x12    /* Hard Disk Type; bits 7-4 are 1st drive */
  86 #define CMOSEQP         0x14    /* Diskette, Video, and CoProcessor info */
  87 #define CMOSADF         0x2d    /* Additional flags - Compaq VDU info */
  88
  89 /* Shifts of interest */
  90
  91 #define VID_SHFT        4       /* Shift display type bits into 0-3 */
  92
  93 /* masks of interest */
  94 #define CMPQVDU         0x04    /* Compaq VDU bit */
  95 #define CMPQDMM         0x01    /* Compaq Dual Mode Monitor bit */
  96
  97 #ifdef  __cplusplus
  98 }
  99 #endif
 100
 101 #endif  /* _SYS_CRAM_H */