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