pexpert/pexpert/ppc/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 /*
  23  * @OSF_COPYRIGHT@
  24  */
  25
  26 #ifndef _PEXPERT_PPC_BOOT_H_
  27 #define _PEXPERT_PPC_BOOT_H_
  28
  29 #define BOOT_LINE_LENGTH        256
  30
  31 /*
  32  * Video information..
  33  */
  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
  44 typedef struct Boot_Video       Boot_Video;
  45
  46 /* DRAM Bank definitions - describes physical memory layout.
  47  */
  48 #define kMaxDRAMBanks   26              /* maximum number of DRAM banks */
  49
  50 struct DRAMBank
  51 {
  52         unsigned long   base;           /* physical base of DRAM bank */
  53         unsigned long   size;           /* size of bank */
  54 };
  55 typedef struct DRAMBank DRAMBank;
  56
  57
  58 /* Boot argument structure - passed into Mach kernel at boot time.
  59  */
  60 #define kBootArgsVersion                1
  61 #define kBootArgsRevision               1
  62
  63 typedef struct boot_args {
  64   unsigned short        Revision;       /* Revision of boot_args structure */
  65   unsigned short        Version;        /* Version of boot_args structure */
  66   char          CommandLine[BOOT_LINE_LENGTH];  /* Passed in command line */
  67   DRAMBank      PhysicalDRAM[kMaxDRAMBanks];    /* base and range pairs for the 26 DRAM banks */
  68   Boot_Video    Video;          /* Video Information */
  69     unsigned long       machineType;    /* Machine Type (gestalt) */
  70     void                *deviceTreeP;   /* Base of flattened device tree */
  71     unsigned long       deviceTreeLength;/* Length of flattened tree */
  72     unsigned long       topOfKernelData;/* Highest address used in kernel data area */
  73 } boot_args;
  74
  75 extern boot_args passed_args;
  76
  77 #endif /* _PEXPERT_PPC_BOOT_H_ */