pexpert/pexpert/i386/boot.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 #ifndef _PEXPERT_I386_BOOT_H
  23 #define _PEXPERT_I386_BOOT_H
  24
  25 /*
  26  * What the booter leaves behind for the kernel.
  27  */
  28
  29 /*
  30  * Maximum number of boot drivers that can be loaded.
  31  */
  32 #define NDRIVERS  500
  33
  34 /*
  35  * Types of boot driver that may be loaded by the booter.
  36  */
  37 enum {
  38     kBootDriverTypeInvalid = 0,
  39     kBootDriverTypeKEXT    = 1,
  40     kBootDriverTypeMKEXT   = 2
  41 };
  42
  43 typedef struct {
  44     unsigned long address;  // address where driver was loaded
  45     unsigned long size;     // number of bytes
  46     unsigned long type;     // driver type
  47 } driver_config_t;
  48
  49 /*
  50  * APM BIOS information.
  51  */
  52 typedef struct {
  53     unsigned short major_vers;    // == 0 if not present
  54     unsigned short minor_vers;
  55     unsigned long  cs32_base;
  56     unsigned long  cs16_base;
  57     unsigned long  ds_base;
  58     unsigned long  cs_length;
  59     unsigned long  ds_length;
  60     unsigned long  entry_offset;
  61     union {
  62         struct {
  63             unsigned long mode_16        :1;
  64             unsigned long mode_32        :1;
  65             unsigned long idle_slows_cpu :1;
  66             unsigned long reserved       :29;
  67         } f;
  68         unsigned long data;
  69     } flags;
  70     unsigned long connected;
  71 } APM_config_t;
  72
  73 /*
  74  * PCI bus information.
  75  */
  76 typedef struct _PCI_bus_info_t {
  77     union {
  78         struct {
  79             unsigned char configMethod1 :1;
  80             unsigned char configMethod2 :1;
  81             unsigned char               :2;
  82             unsigned char specialCycle1 :1;
  83             unsigned char specialCycle2 :1;
  84         } s;
  85         unsigned char d;
  86     } u_bus;
  87     unsigned char maxBusNum;
  88     unsigned char majorVersion;
  89     unsigned char minorVersion;
  90     unsigned char BIOSPresent;
  91 } PCI_bus_info_t;
  92
  93 /*
  94  * Video information.
  95  */
  96 struct boot_video {
  97     unsigned long v_baseAddr;   // Base address of video memory
  98     unsigned long v_display;    // Display Code (if Applicable
  99     unsigned long v_rowBytes;   // Number of bytes per pixel row
 100     unsigned long v_width;      // Width
 101     unsigned long v_height;     // Height
 102     unsigned long v_depth;      // Pixel Depth
 103 };
 104
 105 typedef struct boot_video  boot_video;
 106
 107 #define GRAPHICS_MODE     1
 108 #define TEXT_MODE         0
 109
 110 #define BOOT_STRING_LEN   160
 111 #define CONFIG_SIZE       (12 * 4096)
 112
 113 typedef struct {
 114     short            version;
 115     char             bootString[BOOT_STRING_LEN];  // boot arguments
 116     int              magicCookie;                  // KERNBOOTMAGIC
 117     int              numIDEs;                      // number of IDE drives
 118     int              rootdev;                      // root device
 119     int              convmem;                      // conventional memory
 120     int              extmem;                       // extended memory
 121     char             bootFile[128];                // kernel file name
 122     int              firstAddr0;                   // first address for kern convmem
 123     int              diskInfo[4];                  // info for bios dev 80-83
 124     int              graphicsMode;                 // booted in graphics mode?
 125     int              kernDev;                      // device kernel was fetched from
 126     int              numBootDrivers;               // number of drivers loaded
 127     char *           configEnd;                    // pointer to end of config files
 128     int              kaddr;                        // kernel load address
 129     int              ksize;                        // size of kernel
 130     driver_config_t  driverConfig[NDRIVERS];
 131     char             _reserved[2052];
 132     boot_video       video;
 133     PCI_bus_info_t   pciInfo;
 134     APM_config_t     apmConfig;
 135     char             config[CONFIG_SIZE];
 136 } KERNBOOTSTRUCT;
 137
 138 #define KERNSTRUCT_ADDR   ((KERNBOOTSTRUCT *) 0x11000)
 139 #define KERNBOOTMAGIC     0xa7a7a7a7
 140
 141 #ifndef KERNEL
 142 extern KERNBOOTSTRUCT *   kernBootStruct;
 143 #endif
 144
 145 #define BOOT_LINE_LENGTH        256
 146
 147 /*
 148  * Video information..
 149  */
 150
 151 struct Boot_Video {
 152         unsigned long   v_baseAddr;     /* Base address of video memory */
 153         unsigned long   v_display;      /* Display Code (if Applicable */
 154         unsigned long   v_rowBytes;     /* Number of bytes per pixel row */
 155         unsigned long   v_width;        /* Width */
 156         unsigned long   v_height;       /* Height */
 157         unsigned long   v_depth;        /* Pixel Depth */
 158 };
 159
 160 typedef struct Boot_Video       Boot_Video;
 161
 162 /* DRAM Bank definitions - describes physical memory layout.
 163  */
 164 #define kMaxDRAMBanks   26              /* maximum number of DRAM banks */
 165
 166 struct DRAMBank
 167 {
 168         unsigned long   base;           /* physical base of DRAM bank */
 169         unsigned long   size;           /* size of bank */
 170 };
 171 typedef struct DRAMBank DRAMBank;
 172
 173
 174 /* Boot argument structure - passed into Mach kernel at boot time.
 175  */
 176 #define kBootArgsVersion                1
 177 #define kBootArgsRevision               1
 178
 179 typedef struct boot_args {
 180   unsigned short        Revision;       /* Revision of boot_args structure */
 181   unsigned short        Version;        /* Version of boot_args structure */
 182   char          CommandLine[BOOT_LINE_LENGTH];  /* Passed in command line */
 183   DRAMBank      PhysicalDRAM[kMaxDRAMBanks];    /* base and range pairs for the 26 DRAM banks */
 184   Boot_Video    Video;          /* Video Information */
 185     unsigned long       machineType;    /* Machine Type (gestalt) */
 186     void                *deviceTreeP;   /* Base of flattened device tree */
 187     unsigned long       deviceTreeLength;/* Length of flattened tree */
 188     unsigned long       topOfKernelData;/* Highest address used in kernel data area */
 189 } boot_args;
 190
 191 extern boot_args passed_args;
 192
 193 #endif /* _PEXPERT_I386_BOOT_H */
 194