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  * 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  *  boot_args.h - Data stuctures for the information passed to the kernel.
  24  *
  25  *  Copyright (c) 1998-2003 Apple Computer, Inc.
  26  *
  27  *  DRI: Josh de Cesare
  28  */
  29
  30 #ifndef _BOOTX_BOOT_ARGS_H_
  31 #define _BOOTX_BOOT_ARGS_H_
  32
  33 // Video information..
  34
  35 struct Boot_Video {
  36   unsigned long v_baseAddr; /* Base address of video memory */
  37   unsigned long v_display;  /* Display Code (if Applicable */
  38   unsigned long v_rowBytes; /* Number of bytes per pixel row */
  39   unsigned long v_width;    /* Width */
  40   unsigned long v_height;   /* Height */
  41   unsigned long v_depth;    /* Pixel Depth */
  42 };
  43 typedef struct Boot_Video Boot_Video, *Boot_Video_Ptr;
  44
  45
  46 // DRAM Bank definitions - describes physical memory layout.
  47 #define kMaxDRAMBanks (26) /* maximum number of DRAM banks */
  48
  49 struct DRAMBank {
  50   unsigned long base;       /* physical base of DRAM bank */
  51   unsigned long size;       /* size of bank */
  52 };
  53 typedef struct DRAMBank DRAMBank, *DRAMBankPtr;
  54
  55
  56 // Boot argument structure - passed into kernel at boot time.
  57
  58 #define kBootArgsRevision (1)
  59 #define kBootArgsVersion1 (1)
  60 #define kBootArgsVersion2 (2)
  61
  62 #define BOOT_LINE_LENGTH  (256)
  63
  64 struct boot_args {
  65   unsigned short Revision;                /* Revision of boot_args structure */
  66   unsigned short Version;                 /* Version of boot_args structure */
  67   char CommandLine[BOOT_LINE_LENGTH];     /* Passed in command line */
  68   DRAMBank PhysicalDRAM[kMaxDRAMBanks];   /* base/range pairs for the 26 DRAM banks */
  69   Boot_Video     Video;                   /* Video Information */
  70   unsigned long  machineType;             /* Machine Type (gestalt) */
  71   void           *deviceTreeP;            /* Base of flattened device tree */
  72   unsigned long  deviceTreeLength;        /* Length of flattened tree */
  73   unsigned long  topOfKernelData;         /* Last address of kernel data area*/
  74 };
  75 typedef struct boot_args boot_args, *boot_args_ptr;
  76
  77 struct compressed_kernel_header {
  78   u_int32_t signature;
  79   u_int32_t compress_type;
  80   u_int32_t adler32;
  81   u_int32_t uncompressed_size;
  82   u_int32_t compressed_size;
  83   u_int32_t reserved[11];
  84   char      platform_name[64];
  85   char      root_path[256];
  86   u_int8_t  data[0];
  87 };
  88 typedef struct compressed_kernel_header compressed_kernel_header;
  89
  90 #endif /* ! _BOOTX_BOOT_ARGS_H_ */