NetBSD/sys/arch/x68k/fdboot/bootufs.c

/*	$NetBSD: bootufs.c,v 1.4 1996/07/08 16:32:17 oki Exp $	*/

/*-
 * Copyright (c) 1993, 1994 Takumi Nakamura.
 *
 * 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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by Takumi Nakamura.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
 */

/***************************************************************
 *
 *	file: bootufs.c
 *
 *	author: chapuni(GBA02750@niftyserve.or.jp)
 *
 *	<EFBFBD><EFBFBD><EFBFBD>ͤˤ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>:	UNIX C PROGRAMMING (NUTSHELL)
 *			(¯<EFBFBD>˸<EFBFBD><EFBFBD><EFBFBD><EFBFBD>饤<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>)
 *
 *	<EFBFBD><EFBFBD><EFBFBD>줫<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˾;
 *	<EFBFBD><EFBFBD><EFBFBD><EFBFBD>̣<EFBFBD><EFBFBD><EFBFBD>ʤ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ե<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ˤ<EFBFBD><EFBFBD>Ƥߤ褦<EFBFBD><EFBFBD>
 *	<EFBFBD><EFBFBD>ufs <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>⥸<EFBFBD>塼<EFBFBD><EFBFBD><EFBFBD>ϡ<EFBFBD>/sys/lib/libsa <EFBFBD>Τ<EFBFBD><EFBFBD>Τ<EFBFBD>
 *	  <EFBFBD>Ȥ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϥ<EFBFBD><EFBFBD>ʤΤǡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ҤȤ⤽<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ȥ<EFBFBD><EFBFBD>褦<EFBFBD>ˤ<EFBFBD><EFBFBD>褦<EFBFBD><EFBFBD>
 *	<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>褭<EFBFBD>ä<EFBFBD> FD DRIVER <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>夬<EFBFBD><EFBFBD><EFBFBD>ϥ<EFBFBD><EFBFBD>ʤΤǡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
 *	  <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>᤯<EFBFBD>б<EFBFBD><EFBFBD><EFBFBD><EFBFBD>褦<EFBFBD><EFBFBD>
 *
 */

#include <sys/param.h>
#include <sys/reboot.h>
#include <sys/types.h>
#include <sys/time.h>
#include <ufs/ufs/quota.h>
#include <ufs/ffs/fs.h>
#include <ufs/ufs/inode.h>
#include <ufs/ufs/dir.h>
#include <a.out.h>

#include "fdboot.h"
#include "../x68k/iodevice.h"

#define alloca __builtin_alloca
#define memcpy __builtin_memcpy

static inline void
bcopy (s, d, len)
	const char *s;
	char *d;
	long len;
{
	while (len--)
		*d++ = *s++;
}

static inline int
strcmp (a, b)
	const char *a;
	const char *b;
{
	while (*a && *b && *a == *b)
		a++, b++;
	return (*a != *b);
}

static inline int
memcmp (a, b, n)
	const char *a;
	const char *b;
	int n;
{
	while (*a == *b && --n)
		a++, b++;
	return (*a != *b);
}

static inline void
memset(p, v, len)
	void *p;
	long v;
	long len;
{
	while (len--)
		*(char *)p++ = v;
}

/* for debug */
#ifdef DEBUG
extern int printf __P((const char *, ...));
#endif

#define IODEVbase ((volatile struct IODEVICE *)PHYS_IODEV)

union {
	struct fs superblk;		/* <20>ۥ<EFBFBD><DBA5><EFBFBD><EFBFBD><EFBFBD> */
	unsigned char buf[SBSIZE];	/* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>碌 */
} superblk_buf;

#define sblock superblk_buf.superblk

/***************************************************************
 *
 *	<EFBFBD>ǥ<EFBFBD><EFBFBD>쥯<EFBFBD>ȥꥨ<EFBFBD><EFBFBD><EFBFBD>ȥ<EFBFBD><EFBFBD>򤿤<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Хåե<EFBFBD>
 *
 */

#define N_VMUNIX 24

struct {
	ino_t ino;	/* inode */
	char name[60];
} vmunix_dirent[N_VMUNIX];

char *lowram;

/***************************************************************
 *
 *	<EFBFBD>֥<EFBFBD><EFBFBD>å<EFBFBD><EFBFBD><EFBFBD>Ϣ³<EFBFBD>ɤߤ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ߤ롣
 *	length = 0 <EFBFBD>ΤȤ<EFBFBD><EFBFBD>ϡ<EFBFBD>ñ<EFBFBD>˥Хåե<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ե<EFBFBD><EFBFBD>å<EFBFBD><EFBFBD>夹<EFBFBD><EFBFBD>
 *	<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ȥʤ롣
 *
 */

void *s_buf;
int s_pos;
size_t s_len;

int
raw_read_queue(buf, pos, len)
	void *buf;
	int pos;
	size_t len;
{
	int r = 0;
	/* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϲ<EFBFBD><CFB2>⤷<EFBFBD>ʤ<EFBFBD> */
	if (s_len == 0) {
		s_buf = buf;
		s_pos = pos;
		s_len = len;
		return r;
	}
	/* <20><><EFBFBD>Υ<EFBFBD><CEA5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ³<CFA2><C2B3><EFBFBD>Ƥ<EFBFBD><C6A4><EFBFBD><EFBFBD>Ȥ<EFBFBD> */
	if (len > 0 && s_pos + btodb(s_len) == pos) {
		s_len += len;
		return r;
	}
	/* <20><><EFBFBD><EFBFBD><EFBFBD>ޤ<EFBFBD>ί<EFBFBD>äƤ<C3A4><C6A4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Τ<EFBFBD><CEA4>ɤ<EFBFBD> */
	r = RAW_READ(s_buf, s_pos, s_len);
	s_buf = buf;
	s_pos = pos;
	s_len = len;
	return r;
}

/***************************************************************
 *
 *	<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѡ<EFBFBD><EFBFBD>֥<EFBFBD><EFBFBD>å<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɤߤ<EFBFBD><EFBFBD><EFBFBD>
 *
 */

void
get_superblk()
{
	RAW_READ(&superblk_buf.buf, dbtob(SBLOCK), SBSIZE);
#ifdef DEBUG
	printf("fs_magic=%08lx\n", sblock.fs_magic);
	printf("fs_ipg=%08lx\n", sblock.fs_ipg);
	printf("fs_ncg=%08lx\n", sblock.fs_ncg);
	printf("fs_bsize=%08lx\n", sblock.fs_bsize);
	printf("fs_fsize=%08lx\n", sblock.fs_fsize);
	printf("INOPB=%08lx\n", INOPB(&sblock));
#endif
}

/***************************************************************
 *
 *	inode <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>äƤ<EFBFBD><EFBFBD><EFBFBD>
 *
 */

int
get_inode(ino, pino)
	ino_t ino;
	struct dinode *pino;
{
	struct dinode *buf = alloca(sblock.fs_bsize);
	RAW_READ(buf,
		 dbtob(fsbtodb(&sblock, ino_to_fsba(&sblock, ino))),
		 sblock.fs_bsize);
	*pino = buf[ino_to_fsbo(&sblock, ino)];
#ifdef DEBUG
	printf("%d)permission=%06ho\n", ino, pino->di_mode);
	printf("%d)nlink=%4d\n", ino, pino->di_nlink);
	printf("%d)uid=%4d\n", ino, pino->di_uid);
	printf("%d)gid=%4d\n", ino, pino->di_gid);
	printf("%d)size=%ld\n", ino, pino->di_size);
#endif
	return 0;
}

/***************************************************************
 *
 *	inode <EFBFBD>λؤ<EFBFBD><EFBFBD>Ƥ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>֥<EFBFBD><EFBFBD>å<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>äƤ<EFBFBD><EFBFBD><EFBFBD>
 *
 *	NutShell <EFBFBD>饤<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܤ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Υѥ<EFBFBD><EFBFBD><EFBFBD>
 *
 *	buf <EFBFBD>ˤϥǡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɤ<EFBFBD><EFBFBD>Ǥ<EFBFBD><EFBFBD>륢<EFBFBD>ɥ쥹<EFBFBD>򥻥åȤ<EFBFBD><EFBFBD><EFBFBD>
 *	<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƥۤ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʤ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ǥ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Х֥<EFBFBD><EFBFBD>å<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڤꤢ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
 *
 */

int
read_indirect(blkno, level, buf, count)
	ino_t blkno;
	int level;
	void **buf;
	int count;
{
	daddr_t idblk[MAXBSIZE / sizeof(daddr_t)];
	int i;

	RAW_READ(idblk,
		 dbtob(fsbtodb(&sblock, blkno)),
		 sblock.fs_bsize);

	for (i = 0; i < NINDIR(&sblock) && count > 0; i++) {
		if (level) {
			/* <20><><EFBFBD><EFBFBD><EFBFBD>˴<EFBFBD><CBB4>ܥ֥<DCA5><D6A5>å<EFBFBD><C3A5><EFBFBD><EFBFBD>ɤޤ<C9A4><DEA4><EFBFBD> */
			count = read_indirect(idblk[i], level - 1, buf, count);
		} else {
			/* <20>ǡ<EFBFBD><C7A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɤ<EFBFBD> */
#ifdef DEBUG
			printf("%d%4d\n", level, idblk[i]);
#endif
			raw_read_queue(*buf,
				       dbtob(fsbtodb(&sblock, idblk[i])),
				       sblock.fs_bsize);
			*buf += sblock.fs_bsize;
			count -= sblock.fs_bsize;
		}
	}
	return count;
}

/*
 * <EFBFBD>ʤ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ANSI C <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ǥʤ<EFBFBD><EFBFBD><EFBFBD>ư<EFBFBD><EFBFBD><EFBFBD>ʤ<EFBFBD>(?)
 */
void
read_blocks(struct dinode *dp, void *buf, int count)
{
	int i;

	if (dp->di_size < count)
		count = dp->di_size;

	s_len = 0;

	/* direct block <20><><EFBFBD>ɤ<EFBFBD> */
	for (i = 0; i < NDADDR && count > 0; i++) {
#ifdef DEBUG
		printf(" %4d\n", dp->di_db[i]);
#endif
		raw_read_queue(buf,
			       dbtob(fsbtodb(&sblock, dp->di_db[i])),
			       sblock.fs_bsize);
		buf += sblock.fs_bsize;
		count -= sblock.fs_bsize;
	}
  
	/* indirect block <20><><EFBFBD>ɤ<EFBFBD> */
	for (i = 0; i < NIADDR && count > 0; i++) {
		count = read_indirect(dp->di_ib[i], i, &buf, count);
	}
	/* <20>Хåե<C3A5><D5A5>Υե<CEA5><D5A5>å<EFBFBD><C3A5><EFBFBD> */
	raw_read_queue(NULL, 0, 0);
}

/***************************************************************
 *
 *	<EFBFBD><EFBFBD><EFBFBD>ꤵ<EFBFBD>줿<EFBFBD>ե<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> inode <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
 *
 */

ino_t
search_file(dirino, filename)
	ino_t dirino;		/* <20>ǥ<EFBFBD><C7A5>쥯<EFBFBD>ȥ<EFBFBD><C8A5>ΰ<EFBFBD><CEB0><EFBFBD> */
	const char *filename;	/* <20>ե<EFBFBD><D5A5><EFBFBD><EFBFBD><EFBFBD>̾ */
{
	void *dirp;
	struct dinode dinode;
	struct direct *dir;

	get_inode(dirino, &dinode);
	dirp = alloca((dinode.di_size + MAXBSIZE - 1) & -MAXBSIZE);
	read_blocks(&dinode, dirp, dinode.di_size);

	while (dir = dirp, dir->d_ino != 0) {
		if (!strcmp(dir->d_name, filename))
			return dir->d_ino;
		dirp += dir->d_reclen;
	}
	return 0;
}

/***************************************************************
 *
 *	<EFBFBD><EFBFBD><EFBFBD>ꤵ<EFBFBD>줿<EFBFBD>ե<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɤ߹<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ǥ<EFBFBD><EFBFBD><EFBFBD>
 *
 */

unsigned
load(buf, dirino, filename)
	void *buf;		/* <20>ɤ߹<C9A4><DFB9><EFBFBD><EFBFBD><EFBFBD> */
	ino_t dirino;		/* <20><><EFBFBD><EFBFBD><EFBFBD>ǥ<EFBFBD><C7A5>쥯<EFBFBD>ȥ<EFBFBD><C8A5><EFBFBD> inode <20>ֹ<EFBFBD> */
	const char *filename;	/* <20>ե<EFBFBD><D5A5><EFBFBD><EFBFBD><EFBFBD>̾ */
{
	struct dinode dinode;

	get_inode(search_file(dirino, filename), &dinode);
	read_blocks(&dinode, buf, dinode.di_size);
	return dinode.di_size;
}

/***************************************************************
 *
 *	for test
 *
 *	<EFBFBD><EFBFBD><EFBFBD>ΤȤ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>vmunix <EFBFBD>ϥ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܥ<EFBFBD><EFBFBD>å<EFBFBD><EFBFBD><EFBFBD><EFBFBD>󥯤ϵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
 *	<EFBFBD><EFBFBD><EFBFBD>ʤ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ū<EFBFBD>ˤϤɤ<EFBFBD><EFBFBD>ˤ<EFBFBD><EFBFBD>ʤ뤫<EFBFBD>⤷<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
 *
 */

void
debug_print(s)
	unsigned char *s;
{
	unsigned c;
	while ((c = *s++)) {
		if (c >= 0x80)
			c = JISSFT((0x0100 * c + *s++) & 0x7F7F);
		B_PUTC(c);
	}
}

void
debug_print_hex(x, l)
	unsigned x;	/* ɽ<><C9BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
	int l;		/* ɽ<><C9BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
{
	if (l >= 0) {
		debug_print_hex(x >> 4, l - 1);
		x &= 0x0F;
		if (x > 9)
			x += 7;
		B_PUTC('0' + x);
	}
}

/***************************************************************
 *
 *	vmunix.* netbsd.* <EFBFBD>Υꥹ<EFBFBD>Ȥ<EFBFBD><EFBFBD>Ĥ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ф<EFBFBD>
 *
 */

void
pickup_list(dirino)
	ino_t dirino;
{
	void *dirp;
	struct dinode dinode;
	struct direct *dir;
	int n = 0;

	get_inode(dirino, &dinode);
	dirp = alloca((dinode.di_size + MAXBSIZE - 1) & -MAXBSIZE);
	read_blocks(&dinode, dirp, dinode.di_size);

	while (dir = dirp, dir->d_ino != 0) {
		if (!memcmp(dir->d_name, "vmunix", 6)
		    || !memcmp(dir->d_name, "netbsd", 6)) {
			vmunix_dirent[n].ino = dir->d_ino;
			memcpy(vmunix_dirent[n].name, dir->d_name, 60);
			if (++n >= N_VMUNIX)
				return;
		}
		dirp += dir->d_reclen;
	}
	while (n < N_VMUNIX)
		vmunix_dirent[n++].ino = 0;
}

/***************************************************************
 *
 *	vmunix_dirent[] <EFBFBD>Υ쥳<EFBFBD><EFBFBD><EFBFBD>ɤ<EFBFBD>ɽ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
 *
 */

void
print_list(n, active, bootflags)
	int n;
	int active;
	unsigned bootflags;
{
	if (!vmunix_dirent[n].ino)
		return;
	B_LOCATE(0, 4 + n);
	B_PRINT(active && (bootflags & RB_SINGLE)
		? "SINGLE "
		: "       ");
	debug_print_hex(vmunix_dirent[n].ino, 8);
	B_PRINT("  ");
	if (active)
		B_COLOR(0x0F);
	B_PRINT(vmunix_dirent[n].name);
	B_COLOR(0x03);
}

/***************************************************************
 *
 *	<EFBFBD>ޤ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>衩
 *
 *	<EFBFBD><EFBFBD><EFBFBD>٤Ƥ<EFBFBD> IPL <EFBFBD>⥸<EFBFBD>塼<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɤ߹<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ǥ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ȥϡ<EFBFBD>
 *	<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ǥ<EFBFBD><EFBFBD>롣<EFBFBD>֥<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ž<EFBFBD><EFBFBD><EFBFBD>פ<EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ޤǤϡ<EFBFBD>
 *	x68k IOCS <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƥ<EFBFBD><EFBFBD>ޤ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ߤ<EFBFBD><EFBFBD>ޥ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ޤǤ<EFBFBD>
 *	<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>פǤ<EFBFBD><EFBFBD>礦<EFBFBD><EFBFBD>
 *
 */

volatile void
bootufs()
{
	unsigned long bootflags;
	unsigned long esym;
	int i;
	char *addr;
	/* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 0x100000 <20><><EFBFBD><EFBFBD>¸<EFBFBD>ߤ<EFBFBD><DFA4>Ƥ<EFBFBD><C6A4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
	extern struct exec header;
	extern char image[];
#if 0
	/* for debug; <20><>ư<EFBFBD><C6B0><EFBFBD>Υ쥸<CEA5><ECA5B8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>äƤ<C3A4><C6A4><EFBFBD> */
	extern long tmpbuf[16];
#endif

#if 0	/* sdboot */
	extern long ID;
#else
	extern long FDMODE;
	extern unsigned char FDSECMINMAX[8];	/* or int [2] */
#endif

	unsigned short SFT;

	/* <20><><EFBFBD><EFBFBD><EFBFBD>ϥ<EFBFBD><CFA5>ԡ<EFBFBD><D4A1><EFBFBD> */
	struct exec localheader;

	/* MPU <20><><EFBFBD><EFBFBD><EFBFBD>å<EFBFBD> */
#if 0
	sys_stat = SYS_STAT(0);
	if ((sys_stat & 255) == 0 ||
	    (getcpu() != 4 && !(sys_stat & (1 << 14)))) {
		debug_print("MMU <20><><EFBFBD>ʤ<EFBFBD><CAA4><EFBFBD><EFBFBD>ᡢNetBSD <20><><EFBFBD><EFBFBD>ư<EFBFBD>Ǥ<EFBFBD><C7A4>ޤ<EFBFBD><DEA4><EFBFBD><EFBFBD><EFBFBD>\r\n");
		debug_print("<EFBFBD>ꥻ<EFBFBD>åȤ<EFBFBD><EFBFBD>Ƥ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>\r\n");
		for(;;);
	}
#endif

	debug_print("\r\n");

	/* bootflags <20>򥻥å<F2A5BBA5> */
	bootflags = RB_AUTOBOOT;

	/* <20><><EFBFBD>եȥ<D5A5><C8A5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƥ<EFBFBD><C6A4><EFBFBD><EFBFBD><EFBFBD> */
	SFT = B_SFTSNS();
	if (SFT & 0x01)
		bootflags |= RB_SINGLE;

#if 0
	/* for debug; <20>쥸<EFBFBD><ECA5B8><EFBFBD><EFBFBD><EFBFBD>ξ<EFBFBD><CEBE>֤<EFBFBD><D6A4>ץ<EFBFBD><D7A5><EFBFBD><EFBFBD>Ȥ<EFBFBD><C8A4><EFBFBD> */
	for (i = 0; i < 16; i++) {
		debug_print_hex(tmpbuf[i], 8);
		debug_print("\r\n");
	}
#endif

	/* vmunix <20><><EFBFBD>ɤ߹<C9A4><DFB9><EFBFBD><EFBFBD>Ǥ<EFBFBD><C7A4><EFBFBD> */
	get_superblk();
	if (sblock.fs_magic != FS_MAGIC) {
		debug_print("fdboot: bogus super block;"
			    " <20>롼<EFBFBD>ȥե<C8A5><D5A5><EFBFBD><EFBFBD>륷<EFBFBD><EBA5B7><EFBFBD>ƥब<C6A5><E0A4AC><EFBFBD><EFBFBD><EFBFBD>Ƥ<EFBFBD><C6A4>ޤ<EFBFBD><DEA4><EFBFBD>\r\n");
		debug_print("<EFBFBD>ꥻ<EFBFBD>åȤ<EFBFBD><EFBFBD>Ƥ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>\r\n");
		for (;;);
	}

	if (bootflags == RB_AUTOBOOT) {
		debug_print("loading netbsd...");
		esym = load(&header, ROOTINO, "netbsd");

		SFT = B_SFTSNS();
		if (SFT & 0x0001)
			bootflags |= RB_SINGLE;
	}

	if (bootflags != RB_AUTOBOOT) {
		int x = 0;
		struct dinode dinode;

		B_CLR_ST(2);
		debug_print("....<2E>ɤΥ<C9A4><CEA5><EFBFBD><EFBFBD>ͥ<EFBFBD><CDA5><EFBFBD><EFBFBD>ɤ߹<C9A4><DFB9>ߤޤ<DFA4><DEA4><EFBFBD><EFBFBD><EFBFBD>\r\n"
			    "SHIFT <20><> RB_SINGLE <20><><EFBFBD>ȥ<EFBFBD><C8A5>뤷<EFBFBD>ޤ<EFBFBD><DEA4><EFBFBD>\r\n");

		/* <20>롼<EFBFBD>ȥǥ<C8A5><C7A5>쥯<EFBFBD>ȥ<EFBFBD><C8A5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϥ<EFBFBD><CFA4><EFBFBD> */
		pickup_list(ROOTINO);

		/* ɽ<><C9BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
		for (i = 0; i < N_VMUNIX; i++) {
			if (!memcmp(vmunix_dirent[i].name, "netbsd", 7)) {
				print_list(x, 0, bootflags);
				x = i;
			}
			print_list(i, i == x, bootflags);
		}

		while (B_SFTSNS() & 0x0001);

		/* <20><><EFBFBD><EFBFBD><EFBFBD>Ԥ<EFBFBD><D4A4>롼<EFBFBD>פ<EFBFBD><D7A4><EFBFBD> */
		for (;;) {
			switch ((B_KEYINP() >> 8) & 0xFF) {
			case 0x3C:	/* UP */
				if (x > 0) {
					print_list(--x, 1, bootflags);
					print_list(x + 1, 0, bootflags);
				}
				break;
			case 0x3E:	/* DOWN */
				if (x < N_VMUNIX - 1
				    && vmunix_dirent[x + 1].ino) {
					print_list(++x, 1, bootflags);
					print_list(x - 1, 0, bootflags);
				}
				break;
			case 0x70:	/* SHIFT */
				bootflags ^= RB_SINGLE;
				print_list(x, 1, bootflags);
				break;
			case 0x1D:	/* CR */
			case 0x4E:	/* ENTER */
				goto exit_loop;
			}
		}
	exit_loop:
		B_CLR_ST(2);
		B_PRINT("loading ");
		B_PRINT(vmunix_dirent[x].name);
		B_PRINT("...");
		get_inode(vmunix_dirent[x].ino, &dinode);
		read_blocks(&dinode, &header, dinode.di_size);
		esym = dinode.di_size;
	}
	debug_print("done.\r\n");

	/* <20>֤Ҥ餬<D2A4>ʡפǡ<D7A4>ddb <20>򵯤<EFBFBD><F2B5AFA4><EFBFBD> */
	SFT = B_SFTSNS();
	if (SFT & 0x2000)
		bootflags |= RB_KDB;

	/* esym == 32 + tsize + dsize + ssize + strsize */

	/* <20>إå<D8A5><C3A5>򥳥ԡ<F2A5B3A5><D4A1><EFBFBD><EFBFBD><EFBFBD> */
	localheader = header;
#define x localheader

	esym -= sizeof(header) + localheader.a_text + localheader.a_data;
	/* esym == ssize + strsize */

	/* <20><><EFBFBD>Τ򥳥<CEA4><F2A5B3A5><EFBFBD> load <20><><EFBFBD><EFBFBD> */
	if (N_GETMID(localheader) == MID_M68K
	    && N_GETMAGIC(localheader) == NMAGIC) {

		/*
		 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>߶ػߤǤ<EFBFBD><EFBFBD>롣
		 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ĥ<EFBFBD><EFBFBD>Ƥ<EFBFBD><EFBFBD>졣
		 */
		asm volatile ("oriw #0x0700,sr");

		addr = lowram;
		memcpy(addr, image, x.a_text);
		addr += (x.a_text + __LDPGSZ - 1) & ~(__LDPGSZ - 1);
		memcpy(addr, image + x.a_text, x.a_data);
		addr += x.a_data;
		memset(addr, 0x00, x.a_bss);
		addr += x.a_bss;
		/*ssym = addr;*/
		bcopy(&x.a_syms, addr, sizeof(x.a_syms));
		addr += sizeof(x.a_syms);
		bcopy(image + x.a_text + x.a_data, addr, x.a_syms);
		addr += x.a_syms;
		i = *(int *)(image + x.a_text + x.a_data + x.a_syms);
		bcopy(image + x.a_text + x.a_data + x.a_syms, addr, sizeof(int));
		if (i) {
			i -= sizeof(int);
			addr += sizeof(int);
			bcopy(image + x.a_text + x.a_data + x.a_syms + sizeof(int), addr, i);
			addr += i;
		}
#define	round_to_size(x) \
	(((int)(x) + sizeof(int) - 1) & ~(sizeof(int) - 1))
	esym = (unsigned long)round_to_size(addr - lowram);
#undef round_to_size
memset(esym, 0, 0x003e8000 - (int)esym /* XXX */);

		IODEVbase->io_mfp.iera = 0;
		IODEVbase->io_mfp.ierb = 0;
		IODEVbase->io_mfp.rsr  = 0;
/*		IODEVbase->io_sysport.keyctrl = 0;*/

		/* <20>¹<EFBFBD> */
#if 0	/* sdboot */
		asm volatile ("movl %0,d6" : : "g" (MAKEBOOTDEV(4, 0, 0, ID & 7, 0)) : "d6");
#else
		asm volatile ("movl %0,d6" : : "g" (MAKEBOOTDEV(2, 0, 0, (FDMODE >> 8) & 3, (FDSECMINMAX[0] == 3) ? 0 : 2)) : "d6");
#endif
		asm volatile ("movl %0,d7" : : "g" (bootflags) : "d7");

		/* <20><><EFBFBD>ޤ<EFBFBD> */
		(*(void volatile (*)(long, long, long))localheader.a_entry)
			(0, *(long *)0xED0008, esym);
	} else {
		debug_print("fdboot: improper file format: <20>¹<EFBFBD><C2B9>Բ<EFBFBD>ǽ<EFBFBD>Ǥ<EFBFBD><C7A4><EFBFBD>\r\n");
		debug_print("<EFBFBD>ꥻ<EFBFBD>åȤ<EFBFBD><EFBFBD>Ƥ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>\r\n");
		for (;;);
	}
}

/* eof */