bootx.tproj/include.subproj/boot_args.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*
  26  *  boot_args.h - Data stuctures for the information passed to the kernel.
  27  *
  28  *  Copyright (c) 1998-2003 Apple Computer, Inc.
  29  *
  30  *  DRI: Josh de Cesare
  31  */
  32
  33 #ifndef _BOOTX_BOOT_ARGS_H_
  34 #define _BOOTX_BOOT_ARGS_H_
  35
  36 // Video information..
  37
  38 struct Boot_Video {
  39   unsigned long v_baseAddr; /* Base address of video memory */
  40   unsigned long v_display;  /* Display Code (if Applicable */
  41   unsigned long v_rowBytes; /* Number of bytes per pixel row */
  42   unsigned long v_width;    /* Width */
  43   unsigned long v_height;   /* Height */
  44   unsigned long v_depth;    /* Pixel Depth */
  45 };
  46 typedef struct Boot_Video Boot_Video, *Boot_Video_Ptr;
  47
  48
  49 // DRAM Bank definitions - describes physical memory layout.
  50 #define kMaxDRAMBanks (26) /* maximum number of DRAM banks */
  51
  52 struct DRAMBank {
  53   unsigned long base;       /* physical base of DRAM bank */
  54   unsigned long size;       /* size of bank */
  55 };
  56 typedef struct DRAMBank DRAMBank, *DRAMBankPtr;
  57
  58
  59 // Boot argument structure - passed into kernel at boot time.
  60
  61 #define kBootArgsRevision (1)
  62 #define kBootArgsVersion1 (1)
  63 #define kBootArgsVersion2 (2)
  64
  65 #define BOOT_LINE_LENGTH  (256)
  66
  67 struct boot_args {
  68   unsigned short Revision;                /* Revision of boot_args structure */
  69   unsigned short Version;                 /* Version of boot_args structure */
  70   char CommandLine[BOOT_LINE_LENGTH];     /* Passed in command line */
  71   DRAMBank PhysicalDRAM[kMaxDRAMBanks];   /* base/range pairs for the 26 DRAM banks */
  72   Boot_Video     Video;                   /* Video Information */
  73   unsigned long  machineType;             /* Machine Type (gestalt) */
  74   void           *deviceTreeP;            /* Base of flattened device tree */
  75   unsigned long  deviceTreeLength;        /* Length of flattened tree */
  76   unsigned long  topOfKernelData;         /* Last address of kernel data area*/
  77 };
  78 typedef struct boot_args boot_args, *boot_args_ptr;
  79
  80 #endif /* ! _BOOTX_BOOT_ARGS_H_ */