pexpert/pexpert/ppc/boot.h

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