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  * 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  *  device_tree.h - Data structures for the flattened device tree.
  24  *
  25  *  Copyright (c) 1998-2000 Apple Computer, Inc.
  26  *
  27  *  DRI: Josh de Cesare
  28  */
  29
  30 #ifndef _BOOTX_DEVICE_TREE_H_
  31 #define _BOOTX_DEVICE_TREE_H_
  32
  33 #define kPropNameLength (32)
  34 #define kPropValueMaxLength (0x100000)
  35
  36 struct DTProperty {
  37   char name[kPropNameLength];  // NUL terminated property name
  38   unsigned long length;        // Length (bytes) of property value that follows
  39   //unsigned long value[1];    // Variable length value of property
  40                                // Padded to a multiple of a longword
  41 };
  42 typedef struct DTProperty DTProperty, *DTPropertyPtr;
  43
  44 struct DTNode {
  45   unsigned long nProperties;   // Number of props[] elements (0 => end of list)
  46   unsigned long nChildren;     // Number of children[] elements
  47   //DTProperty props[];        // nProperties DeviceTreeNodeProperty structs
  48   //DTNode children[];         // nChildren DeviceTreeNode structs
  49 };
  50 typedef struct DTNode DTNode, *DTNodePtr;
  51
  52 #endif /* ! _BOOTX_DEVICE_TREE_H_ */