osfmk/i386/AT386/kernBootStruct.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  * kernBootStruct.h
  24  * What the booter leaves behind for the kernel.
  25  */
  26
  27 /* The config table has room for 13 drivers if their config files
  28  * are the maximum size allowed.
  29  */
  30 #define CONFIG_SIZE (13 * 4096)
  31
  32 /* Maximum number of boot drivers supported, assuming their
  33  * config files fit in the bootstruct.
  34  */
  35 #define NDRIVERS                64
  36
  37 typedef struct {
  38     char    *address;                   // address where driver was loaded
  39     int     size;                       // entry point for driver
  40 } driver_config_t;
  41
  42 typedef struct {
  43     unsigned short      major_vers;     // == 0 if not present
  44     unsigned short      minor_vers;
  45     unsigned long       cs32_base;
  46     unsigned long       cs16_base;
  47     unsigned long       ds_base;
  48     unsigned long       cs_length;
  49     unsigned long       ds_length;
  50     unsigned long       entry_offset;
  51     union {
  52         struct {
  53             unsigned long       mode_16         :1;
  54             unsigned long       mode_32         :1;
  55             unsigned long       idle_slows_cpu  :1;
  56             unsigned long       reserved        :29;
  57         } f;
  58         unsigned long data;
  59     } flags;
  60     unsigned long       connected;
  61 } APM_config_t;
  62
  63 typedef struct _EISA_slot_info_t {
  64     union {
  65         struct {
  66             unsigned char       duplicateID     :4;
  67             unsigned char       slotType        :1;
  68             unsigned char       prodIDPresent   :1;
  69             unsigned char       dupIDPresent    :1;
  70         } s;
  71         unsigned char d;
  72     } u_ID;
  73     unsigned char       configMajor;
  74     unsigned char       configMinor;
  75     unsigned short      checksum;
  76     unsigned char       numFunctions;
  77     union {
  78         struct {
  79             unsigned char       fnTypesPresent  :1;
  80             unsigned char       memoryPresent   :1;
  81             unsigned char       irqPresent      :1;
  82             unsigned char       dmaPresent      :1;
  83             unsigned char       portRangePresent:1;
  84             unsigned char       portInitPresent :1;
  85             unsigned char       freeFormPresent :1;
  86             unsigned char       reserved:1;
  87         } s;
  88         unsigned char d;
  89     } u_resources;
  90     unsigned char       id[8];
  91 } EISA_slot_info_t;
  92
  93 typedef struct _EISA_func_info_t {
  94     unsigned char       slot;
  95     unsigned char       function;
  96     unsigned char       reserved[2];
  97     unsigned char       data[320];
  98 } EISA_func_info_t;
  99
 100 #define NUM_EISA_SLOTS  64
 101
 102 typedef struct _PCI_bus_info_t {
 103     union {
 104         struct {
 105             unsigned char configMethod1 :1;
 106             unsigned char configMethod2 :1;
 107             unsigned char               :2;
 108             unsigned char specialCycle1 :1;
 109             unsigned char specialCycle2 :1;
 110         } s;
 111         unsigned char d;
 112     } u_bus;
 113     unsigned char maxBusNum;
 114     unsigned char majorVersion;
 115     unsigned char minorVersion;
 116     unsigned char BIOSPresent;
 117 } PCI_bus_info_t;
 118
 119 /*
 120  * Video information..
 121  */
 122
 123 struct boot_video {
 124         unsigned long   v_baseAddr;     /* Base address of video memory */
 125         unsigned long   v_display;      /* Display Code (if Applicable */
 126         unsigned long   v_rowBytes;     /* Number of bytes per pixel row */
 127         unsigned long   v_width;        /* Width */
 128         unsigned long   v_height;       /* Height */
 129         unsigned long   v_depth;        /* Pixel Depth */
 130 };
 131
 132 typedef struct boot_video       boot_video;
 133
 134 #define BOOT_STRING_LEN         160
 135
 136 typedef struct {
 137     short   version;
 138     char    bootString[BOOT_STRING_LEN];// string we booted with
 139     int     magicCookie;                // KERNBOOTMAGIC if struct valid
 140     int     numIDEs;                    // how many IDE drives
 141     int     rootdev;                    // booters guess as to rootdev
 142     int     convmem;                    // conventional memory
 143     int     extmem;                     // extended memory
 144     char    boot_file[128];             // name of the kernel we booted
 145     int     first_addr0;                // first address for kern convmem
 146     int     diskInfo[4];                // bios info for bios dev 80-83
 147     int     graphicsMode;               // did we boot in graphics mode?
 148     int     kernDev;                    // device kernel was fetched from
 149     int     numBootDrivers;             // number of drivers loaded by booter
 150     char    *configEnd;                 // pointer to end of config files
 151     int     kaddr;                      // kernel load address
 152     int     ksize;                      // size of kernel
 153     void    *rld_entry;                 // entry point for standalone rld
 154
 155     driver_config_t driverConfig[NDRIVERS];
 156     APM_config_t apm_config;
 157
 158     char   _reserved[7500];
 159
 160     boot_video video;
 161
 162     PCI_bus_info_t pciInfo;
 163
 164     int     eisaConfigFunctions;
 165     EISA_slot_info_t eisaSlotInfo[NUM_EISA_SLOTS];// EISA slot information
 166
 167     char   config[CONFIG_SIZE];         // the config file contents
 168 } KERNBOOTSTRUCT;
 169
 170 #define GRAPHICS_MODE   1
 171 #define TEXT_MODE 0
 172
 173 #define KERNSTRUCT_ADDR ((KERNBOOTSTRUCT *)0x11000)
 174 #define KERNBOOTMAGIC 0xa7a7a7a7
 175
 176 #ifndef EISA_CONFIG_ADDR
 177 #define EISA_CONFIG_ADDR        0x20000
 178 #define EISA_CONFIG_LEN         0x10000
 179 #endif
 180
 181 #ifndef KERNEL
 182 extern KERNBOOTSTRUCT *kernBootStruct;
 183 #endif