Source to machdep/ppc/boot.h


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/*
 * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
 *
 * @[email protected]
 * 
 * "Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
 * Reserved.  This file contains Original Code and/or Modifications of
 * Original Code as defined in and that are subject to the Apple Public
 * Source License Version 1.0 (the 'License').  You may not use this file
 * except in compliance with the License.  Please obtain a copy of the
 * License at http://www.apple.com/publicsource and read it before using
 * this file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
 * License for the specific language governing rights and limitations
 * under the License."
 * 
 * @[email protected]
 */

#ifndef _BOOT_H_
#define _BOOT_H_

#define BOOT_LINE_LENGTH        256

/*
 * Video information.. 
 */

struct Boot_Video {
	unsigned long	v_baseAddr;	/* Base address of video memory */
	unsigned long	v_display;	/* Display Code (if Applicable */
	unsigned long	v_rowBytes;	/* Number of bytes per pixel row */
	unsigned long	v_width;	/* Width */
	unsigned long	v_height;	/* Height */
	unsigned long	v_depth;	/* Pixel Depth */
};

typedef struct Boot_Video	Boot_Video;

/* DRAM Bank definitions - describes physical memory layout.
 */
#define	kMaxDRAMBanks	26		/* maximum number of DRAM banks */

struct DRAMBank
{
	unsigned long	base;		/* physical base of DRAM bank */
	unsigned long	size;		/* size of bank */
};
typedef struct DRAMBank DRAMBank;


#define kPropNameLength	32

typedef struct DeviceTreeNodeProperty {
    char		name[kPropNameLength];	// NUL terminated property name
    unsigned long	length;		// Length (bytes) of folloing prop value
//  unsigned long	value[1];	// Variable length value of property
					// Padded to a multiple of a longword?
} DeviceTreeNodeProperty;

typedef struct OpaqueDTEntry {
    unsigned long	nProperties;	// Number of props[] elements (0 => end)
    unsigned long	nChildren;	// Number of children[] elements
//  DeviceTreeNodeProperty	props[];// array size == nProperties
//  DeviceTreeNode	children[];	// array size == nChildren
} DeviceTreeNode;


/* Boot argument structure - passed into Mach kernel at boot time.
 */
#define kBootArgsVersion		1
#define kBootArgsRevision		1

typedef struct boot_args {
  unsigned short	Revision;	/* Revision of boot_args structure */
  unsigned short	Version;	/* Version of boot_args structure */
  char		CommandLine[BOOT_LINE_LENGTH];	/* Passed in command line */
  DRAMBank	PhysicalDRAM[kMaxDRAMBanks];	/* base and range pairs for the 26 DRAM banks */
  Boot_Video	Video;		/* Video Information */
    unsigned long	machineType;	/* Machine Type (gestalt) */
    void		*deviceTreeP;	/* Base of flattened device tree */
    unsigned long	deviceTreeLength;/* Length of flattened tree */
    unsigned long	topOfKernelData;/* Highest address used in kernel data area */
} boot_args;

extern boot_args passed_args;

#endif /* _BOOT_H_ */