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Revision 1.11, Fri Feb 3 11:08:24 2006 UTC (8 years, 5 months ago) by jmmv
Branch: MAIN
CVS Tags: yamt-x86pmap-base4, yamt-x86pmap-base3, yamt-x86pmap-base2, yamt-x86pmap-base, yamt-x86pmap, yamt-uio_vmspace-base5, yamt-splraiseipl-base5, yamt-splraiseipl-base4, yamt-splraiseipl-base3, yamt-splraiseipl-base2, yamt-splraiseipl-base, yamt-splraiseipl, yamt-pdpolicy-base9, yamt-pdpolicy-base8, yamt-pdpolicy-base7, yamt-pdpolicy-base6, yamt-pdpolicy-base5, yamt-pdpolicy-base4, yamt-pdpolicy-base3, yamt-pdpolicy-base2, yamt-pdpolicy-base, yamt-pdpolicy, yamt-kmem-base3, yamt-kmem-base2, yamt-kmem-base, yamt-kmem, yamt-idlelwp-base8, yamt-idlelwp, wrstuden-fixsa-newbase, wrstuden-fixsa-base-1, wrstuden-fixsa-base, wrstuden-fixsa, vmlocking2-base2, vmlocking2-base1, vmlocking-nbase, vmlocking-base, vmlocking, thorpej-atomic-base, thorpej-atomic, simonb-timecounters-base, simonb-timecounters, simonb-timcounters-final, rpaulo-netinet-merge-pcb-base, reinoud-bufcleanup-nbase, reinoud-bufcleanup-base, reinoud-bufcleanup, ppcoea-renovation-base, ppcoea-renovation, post-newlock2-merge, peter-altq-base, peter-altq, nick-csl-alignment-base5, nick-csl-alignment-base, nick-csl-alignment, newlock2-nbase, newlock2-base, newlock2, netbsd-4-base, netbsd-4-0-RELEASE, netbsd-4-0-RC5, netbsd-4-0-RC4, netbsd-4-0-RC3, netbsd-4-0-RC2, netbsd-4-0-RC1, netbsd-4-0-1-RELEASE, netbsd-4-0, netbsd-4, mjf-ufs-trans-base, mjf-ufs-trans, matt-nb4-arm-base, matt-nb4-arm, matt-mips64-base, matt-mips64, matt-armv6-prevmlocking, jmcneill-pm-base, jmcneill-pm, jmcneill-base, hpcarm-cleanup, gdamore-uart-base, gdamore-uart, elad-kernelauth-base, elad-kernelauth, cube-autoconf-base, cube-autoconf, chap-midi-nbase, chap-midi-base, chap-midi, bouyer-xenamd64-base2, bouyer-xenamd64-base, bouyer-xenamd64, ad-audiomp-base, ad-audiomp, abandoned-netbsd-4-base, abandoned-netbsd-4
Branch point for: vmlocking2, mjf-devfs, matt-armv6, bouyer-xeni386
Changes since 1.10: +7 -1 lines

Implement support for 'The Multiboot Specification' so that i386 kernels
can be booted directly from Multiboot-compliant boot loaders (e.g. GRUB).
See the added multiboot(8) manual page for more information.

No objections in tech-kern@; only positive comments.

/*	$NetBSD: bootinfo.h,v 1.11 2006/02/03 11:08:24 jmmv Exp $	*/

/*
 * Copyright (c) 1997
 *	Matthias Drochner.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */

#ifndef _LOCORE

struct btinfo_common {
	int len;
	int type;
};

#define BTINFO_BOOTPATH		0
#define BTINFO_ROOTDEVICE	1
#define BTINFO_BOOTDISK		3
#define BTINFO_NETIF		4
#define BTINFO_CONSOLE		6
#define BTINFO_BIOSGEOM		7
#define BTINFO_SYMTAB		8
#define BTINFO_MEMMAP		9
#define	BTINFO_BOOTWEDGE	10

struct btinfo_bootpath {
	struct btinfo_common common;
	char bootpath[80];
};

struct btinfo_rootdevice {
	struct btinfo_common common;
	char devname[16];
};

struct btinfo_bootdisk {
	struct btinfo_common common;
	int labelsector; /* label valid if != -1 */
	struct {
		uint16_t type, checksum;
		char packname[16];
	} label;
	int biosdev;
	int partition;
};

struct btinfo_bootwedge {
	struct btinfo_common common;
	int biosdev;
	daddr_t startblk;
	uint64_t nblks;
	daddr_t matchblk;
	uint64_t matchnblks;
	uint8_t matchhash[16];	/* MD5 hash */
} __attribute__((packed));

struct btinfo_netif {
	struct btinfo_common common;
	char ifname[16];
	int bus;
#define BI_BUS_ISA 0
#define BI_BUS_PCI 1
	union {
		unsigned int iobase; /* ISA */
		unsigned int tag; /* PCI, BIOS format */
	} addr;
};

struct btinfo_console {
	struct btinfo_common common;
	char devname[16];
	int addr;
	int speed;
};

struct btinfo_symtab {
	struct btinfo_common common;
	int nsym;
	int ssym;
	int esym;
};

struct bi_memmap_entry {
	uint64_t addr;		/* beginning of block */	/* 8 */
	uint64_t size;		/* size of block */		/* 8 */
	uint32_t type;		/* type of block */		/* 4 */
} __attribute__((packed));				/*	== 20 */

#define	BIM_Memory	1	/* available RAM usable by OS */
#define	BIM_Reserved	2	/* in use or reserved by the system */
#define	BIM_ACPI	3	/* ACPI Reclaim memory */
#define	BIM_NVS		4	/* ACPI NVS memory */

struct btinfo_memmap {
	struct btinfo_common common;
	int num;
	struct bi_memmap_entry entry[1]; /* var len */
};

#if HAVE_NBTOOL_CONFIG_H
#include <nbinclude/sys/bootblock.h>
#else
#include <sys/bootblock.h>
#endif /* HAVE_NBTOOL_CONFIG_H */

/*
 * Structure describing disk info as seen by the BIOS.
 */
struct bi_biosgeom_entry {
	int		sec, head, cyl;		/* geometry */
	uint64_t	totsec;			/* LBA sectors from ext int13 */
	int		flags, dev;		/* flags, BIOS device # */
#define BI_GEOM_INVALID		0x000001
#define BI_GEOM_EXTINT13	0x000002
#ifdef BIOSDISK_EXTINFO_V3
#define BI_GEOM_BADCKSUM	0x000004	/* v3.x checksum invalid */
#define BI_GEOM_BUS_MASK	0x00ff00	/* connecting bus type */
#define BI_GEOM_BUS_ISA		0x000100
#define BI_GEOM_BUS_PCI		0x000200
#define BI_GEOM_BUS_OTHER	0x00ff00
#define BI_GEOM_IFACE_MASK	0xff0000	/* interface type */
#define BI_GEOM_IFACE_ATA	0x010000
#define BI_GEOM_IFACE_ATAPI	0x020000
#define BI_GEOM_IFACE_SCSI	0x030000
#define BI_GEOM_IFACE_USB	0x040000
#define BI_GEOM_IFACE_1394	0x050000	/* Firewire */
#define BI_GEOM_IFACE_FIBRE	0x060000	/* Fibre channel */
#define BI_GEOM_IFACE_OTHER	0xff0000
	unsigned int	cksum;			/* MBR checksum */
	unsigned int	interface_path;		/* ISA iobase PCI bus/dev/fun */
	uint64_t	device_path;
	int		res0;			/* future expansion; 0 now */
#else
	unsigned int	cksum;			/* MBR checksum */
	int		res0, res1, res2, res3;	/* future expansion; 0 now */
#endif
	struct mbr_partition dosparts[MBR_PART_COUNT]; /* MBR itself */
} __attribute__((packed));

struct btinfo_biosgeom {
	struct btinfo_common common;
	int num;
	struct bi_biosgeom_entry disk[1]; /* var len */
};

#endif /* _LOCORE */

#ifdef _KERNEL

#define BOOTINFO_MAXSIZE 4096

#ifndef _LOCORE
/*
 * Structure that holds the information passed by the boot loader.
 */
struct bootinfo {
	/* Number of bootinfo_* entries in bi_data. */
	uint32_t	bi_nentries;

	/* Raw data of bootinfo entries.  The first one (if any) is
	 * found at bi_data[0] and can be casted to (bootinfo_common *).
	 * Once this is done, the following entry is found at 'len'
	 * offset as specified by the previous entry. */
	uint8_t		bi_data[BOOTINFO_MAXSIZE - sizeof(uint32_t)];
};

void *lookup_bootinfo(int);
#endif /* _LOCORE */

#endif /* _KERNEL */