bootx.tproj/include.subproj/device_tree.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  *  device_tree.h - Data structures for the flattened device tree.
  27  *
  28  *  Copyright (c) 1998-2000 Apple Computer, Inc.
  29  *
  30  *  DRI: Josh de Cesare
  31  */
  32
  33 #ifndef _BOOTX_DEVICE_TREE_H_
  34 #define _BOOTX_DEVICE_TREE_H_
  35
  36 #define kPropNameLength (32)
  37 #define kPropValueMaxLength (0x100000)
  38
  39 struct DTProperty {
  40   char name[kPropNameLength];  // NUL terminated property name
  41   unsigned long length;        // Length (bytes) of property value that follows
  42   //unsigned long value[1];    // Variable length value of property
  43                                // Padded to a multiple of a longword
  44 };
  45 typedef struct DTProperty DTProperty, *DTPropertyPtr;
  46
  47 struct DTNode {
  48   unsigned long nProperties;   // Number of props[] elements (0 => end of list)
  49   unsigned long nChildren;     // Number of children[] elements
  50   //DTProperty props[];        // nProperties DeviceTreeNodeProperty structs
  51   //DTNode children[];         // nChildren DeviceTreeNode structs
  52 };
  53 typedef struct DTNode DTNode, *DTNodePtr;
  54
  55 #endif /* ! _BOOTX_DEVICE_TREE_H_ */