i386/libsaio/bootstruct.h

   1 /*
   2  * Copyright (c) 2002-2003 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Portions Copyright (c) 2002-2003 Apple Computer, Inc.  All Rights
   7  * Reserved.  This file contains Original Code and/or Modifications of
   8  * Original Code as defined in and that are subject to the Apple Public
   9  * Source License Version 2.0 (the "License").  You may not use this file
  10  * except in compliance with the License.  Please obtain a copy of the
  11  * License at http://www.apple.com/publicsource and read it before using
  12  * this file.
  13  *
  14  * The Original Code and all software distributed under the License are
  15  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  16  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  17  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE OR NON- INFRINGEMENT.  Please see the
  19  * License for the specific language governing rights and limitations
  20  * under the License.
  21  *
  22  * @APPLE_LICENSE_HEADER_END@
  23  */
  24
  25 #ifndef __BOOTSTRUCT_H
  26 #define __BOOTSTRUCT_H
  27
  28 #include <pexpert/i386/boot.h>
  29
  30 #include "bios.h"
  31 #include "device_tree.h"
  32
  33 extern boot_args *bootArgs;
  34 extern Node *gMemoryMapNode;
  35
  36 /*
  37  * Maximum number of boot drivers that can be loaded.
  38  */
  39 #define NDRIVERS  500
  40
  41 #define CONFIG_SIZE (12 * 4096)
  42
  43 #define kMemoryMapCountMax 40
  44
  45 /*
  46  * PCI bus information.
  47  */
  48 typedef struct _PCI_bus_info_t {
  49     union {
  50         struct {
  51             unsigned char configMethod1 :1;
  52             unsigned char configMethod2 :1;
  53             unsigned char               :2;
  54             unsigned char specialCycle1 :1;
  55             unsigned char specialCycle2 :1;
  56         } s;
  57         unsigned char d;
  58     } u_bus;
  59     unsigned char maxBusNum;
  60     unsigned char majorVersion;
  61     unsigned char minorVersion;
  62     unsigned char BIOSPresent;
  63 } PCI_bus_info_t;
  64
  65 typedef struct {
  66     unsigned long address;  // address where driver was loaded
  67     unsigned long size;     // number of bytes
  68     unsigned long type;     // driver type
  69 } driver_config_t;
  70
  71 /*
  72  * INT15, E820h - Query System Address Map.
  73  *
  74  * Documented in ACPI Specification Rev 2.0,
  75  * Chapter 15 (System Address Map Interfaces).
  76  */
  77
  78 /*
  79  * ACPI defined memory range types.
  80  */
  81 enum {
  82     kMemoryRangeUsable   = 1,    // RAM usable by the OS.
  83     kMemoryRangeReserved = 2,    // Reserved. (Do not use)
  84     kMemoryRangeACPI     = 3,    // ACPI tables. Can be reclaimed.
  85     kMemoryRangeNVS      = 4,    // ACPI NVS memory. (Do not use)
  86
  87     /* Undefined types should be treated as kMemoryRangeReserved */
  88 };
  89
  90 typedef struct PrivateBootInfo {
  91     int              kernDev;                      // device kernel was fetched from
  92
  93     int              convmem;                      // conventional memory
  94     int              extmem;                       // extended memory
  95     int              numBootDrivers;               // number of drivers loaded
  96     char             bootFile[128];                // kernel file name
  97
  98     unsigned long    memoryMapCount;
  99     MemoryRange      memoryMap[kMemoryMapCountMax];
 100
 101     PCI_bus_info_t   pciInfo;
 102
 103     driver_config_t  driverConfig[NDRIVERS];
 104     char *           configEnd;                    // pointer to end of config files
 105     char             config[CONFIG_SIZE];
 106 } PrivateBootInfo_t;
 107
 108 extern PrivateBootInfo_t *bootInfo;
 109
 110 #endif /* __BOOTSTRUCT_H */