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Annotation of kernel/machdep/ppc/boot.h, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
                      3:  *
                      4:  * @APPLE_LICENSE_HEADER_START@
                      5:  * 
                      6:  * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
                      7:  * Reserved.  This file contains Original Code and/or Modifications of
                      8:  * Original Code as defined in and that are subject to the Apple Public
                      9:  * Source License Version 1.1 (the "License").  You may not use this file
                     10:  * except in compliance with the License.  Please obtain a copy of the
                     11:  * License at http://www.apple.com/publicsource and read it before using
                     12:  * this file.
                     13:  * 
                     14:  * The Original Code and all software distributed under the License are
                     15:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
                     16:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
                     17:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
                     18:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
                     19:  * License for the specific language governing rights and limitations
                     20:  * under the License.
                     21:  * 
                     22:  * @APPLE_LICENSE_HEADER_END@
                     23:  */
                     24: 
                     25: #ifndef _BOOT_H_
                     26: #define _BOOT_H_
                     27: 
                     28: #define BOOT_LINE_LENGTH        256
                     29: 
                     30: /*
                     31:  * Video information.. 
                     32:  */
                     33: 
                     34: struct Boot_Video {
                     35:        unsigned long   v_baseAddr;     /* Base address of video memory */
                     36:        unsigned long   v_display;      /* Display Code (if Applicable */
                     37:        unsigned long   v_rowBytes;     /* Number of bytes per pixel row */
                     38:        unsigned long   v_width;        /* Width */
                     39:        unsigned long   v_height;       /* Height */
                     40:        unsigned long   v_depth;        /* Pixel Depth */
                     41: };
                     42: 
                     43: typedef struct Boot_Video      Boot_Video;
                     44: 
                     45: /* DRAM Bank definitions - describes physical memory layout.
                     46:  */
                     47: #define        kMaxDRAMBanks   26              /* maximum number of DRAM banks */
                     48: 
                     49: struct DRAMBank
                     50: {
                     51:        unsigned long   base;           /* physical base of DRAM bank */
                     52:        unsigned long   size;           /* size of bank */
                     53: };
                     54: typedef struct DRAMBank DRAMBank;
                     55: 
                     56: 
                     57: #define kPropNameLength        32
                     58: 
                     59: typedef struct DeviceTreeNodeProperty {
                     60:     char               name[kPropNameLength];  // NUL terminated property name
                     61:     unsigned long      length;         // Length (bytes) of folloing prop value
                     62: //  unsigned long      value[1];       // Variable length value of property
                     63:                                        // Padded to a multiple of a longword?
                     64: } DeviceTreeNodeProperty;
                     65: 
                     66: typedef struct OpaqueDTEntry {
                     67:     unsigned long      nProperties;    // Number of props[] elements (0 => end)
                     68:     unsigned long      nChildren;      // Number of children[] elements
                     69: //  DeviceTreeNodeProperty     props[];// array size == nProperties
                     70: //  DeviceTreeNode     children[];     // array size == nChildren
                     71: } DeviceTreeNode;
                     72: 
                     73: 
                     74: /* Boot argument structure - passed into Mach kernel at boot time.
                     75:  */
                     76: #define kBootArgsVersion               1
                     77: #define kBootArgsRevision              1
                     78: 
                     79: typedef struct boot_args {
                     80:   unsigned short       Revision;       /* Revision of boot_args structure */
                     81:   unsigned short       Version;        /* Version of boot_args structure */
                     82:   char         CommandLine[BOOT_LINE_LENGTH];  /* Passed in command line */
                     83:   DRAMBank     PhysicalDRAM[kMaxDRAMBanks];    /* base and range pairs for the 26 DRAM banks */
                     84:   Boot_Video   Video;          /* Video Information */
                     85:     unsigned long      machineType;    /* Machine Type (gestalt) */
                     86:     void               *deviceTreeP;   /* Base of flattened device tree */
                     87:     unsigned long      deviceTreeLength;/* Length of flattened tree */
                     88:     unsigned long      topOfKernelData;/* Highest address used in kernel data area */
                     89: } boot_args;
                     90: 
                     91: extern boot_args passed_args;
                     92: 
                     93: #endif /* _BOOT_H_ */

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