[unix-history] / usr / src / sys / hp300 / stand / boot.c

/*-
 * Copyright (c) 1982, 1986, 1990 The Regents of the University of California.
 * 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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 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.
 *
 *	@(#)boot.c	7.4 (Berkeley) 5/5/91
 */

#include <sys/param.h>
#include <sys/reboot.h>
#include <a.out.h>
#include "saio.h"

#ifndef INSECURE
#include "sys/stat.h"
struct stat sb;
#endif
					/* XXX -- see sys/reboot.h */
#define B_MAKEDEV(a,u,p,t) \
	(((a) << B_ADAPTORSHIFT) | ((u) << B_UNITSHIFT) | \
	 ((p) << B_PARTITIONSHIFT) | ((t) << B_TYPESHIFT))

/*
 * Boot program... arguments in `devtype' and `howto' determine
 * whether boot stops to ask for system name and which device
 * boot comes from.
 */

/* Types in `devtype' specifying major device */
char	devname[][2] = {
	'\0', '\0',	/* 0 = ct */
	'\0', '\0',	/* 1 = fd */
	 'r',  'd',	/* 2 = rd */
	'\0', '\0',	/* 3 = sw */
	 's',  'd',	/* 4 = sd */
};
#define	MAXTYPE	(sizeof(devname) / sizeof(devname[0]))

char line[100];

int	retry = 0;
extern	char *lowram;
extern	int noconsole;
extern	int howto, devtype;

#define	MSUS (0xfffffedc)

char rom2mdev[] = {
	0,	/*  0 - none */
	0,	/*  1 - none */
	0,	/*  2 - none */
	0,	/*  3 - none */
	0,	/*  4 - none */
	0,	/*  5 - none */
	0,	/*  6 - none */
	0,	/*  7 - none */
	0,	/*  8 - none */
	0,	/*  9 - none */
	0,	/* 10 - none */
	0,	/* 11 - none */
	0,	/* 12 - none */
	0,	/* 13 - none */
	4,	/* 14 - SCSI disk */
	0,	/* 15 - none */
	2,	/* 16 - CS/80 device on HPIB */
	2,	/* 17 - CS/80 device on HPIB */
	0,	/* 18 - none */
	0,	/* 19 - none */
	0,	/* 20 - none */
	0,	/* 21 - none */
	0,	/* 22 - none */
	0,	/* 23 - none */
	0,	/* 24 - none */
	0,	/* 25 - none */
	0,	/* 26 - none */
	0,	/* 27 - none */
	0,	/* 28 - none */
	0,	/* 29 - none */
	0,	/* 30 - none */
	0,	/* 31 - none */
};

main()
{
	register type, part, unit, io;
	register char *cp;

	printf("\nBoot\n");
#ifdef JUSTASK
	howto = RB_ASKNAME|RB_SINGLE;
#else
	type = (devtype >> B_TYPESHIFT) & B_TYPEMASK;
	unit = (devtype >> B_UNITSHIFT) & B_UNITMASK;
	unit += 8 * ((devtype >> B_ADAPTORSHIFT) & B_ADAPTORMASK);
	part = (devtype >> B_PARTITIONSHIFT) & B_PARTITIONMASK;
	if ((howto & RB_ASKNAME) == 0) {
		if ((devtype & B_MAGICMASK) != B_DEVMAGIC) {
			/*
			 * we have to map the ROM device type codes
			 * to Unix major device numbers.
			 */
			type = rom2mdev[*(char *)MSUS & 0x1f];
			devtype = (devtype &~ (B_TYPEMASK << B_TYPESHIFT))
				  | (type << B_TYPESHIFT);
		}
		if (type >= 0 && type <= MAXTYPE && devname[type][0]) {
			cp = line;
			*cp++ = devname[type][0];
			*cp++ = devname[type][1];
			*cp++ = '(';
			if (unit >= 10)
				*cp++ = unit / 10 + '0';
			*cp++ = unit % 10 + '0';
			*cp++ = ',';
			*cp++ = part + '0';
			*cp++ = ')';
			strcpy(cp, UNIX);
		} else
			howto = RB_SINGLE|RB_ASKNAME;
	}
#endif
	for (;;) {
		if (!noconsole && (howto & RB_ASKNAME)) {
			printf(": ");
			gets(line);
		} else
			printf(": %s\n", line);
		io = open(line, 0);
		if (io >= 0) {
#ifndef INSECURE
			(void) fstat(io, &sb);
			if (sb.st_uid || (sb.st_mode & 2)) {
				printf("non-secure file, will not load\n");
				howto = RB_SINGLE|RB_ASKNAME;
				continue;
			}
#endif
			if (howto & RB_ASKNAME) {
				/*
				 * Build up devtype register to pass on to
				 * booted program.
				 */ 
				cp = line;
				for (type = 0; type <= MAXTYPE; type++)
					if ((devname[type][0] == cp[0]) && 
					    (devname[type][1] == cp[1]))
					    	break;
				if (type <= MAXTYPE) {
					cp += 3;
					unit = *cp++ - '0';
					if (*cp >= '0' && *cp <= '9')
						unit = unit * 10 + *cp++ - '0';
					cp++;
					part = atol(cp);
					devtype = B_MAKEDEV(unit >> 3, unit & 7, part, type);
				}
			}
			devtype |= B_DEVMAGIC;
			copyunix(howto, devtype, io);
			close(io);
			howto = RB_SINGLE|RB_ASKNAME;
		}
	bad:
		if (++retry > 2)
			howto = RB_SINGLE|RB_ASKNAME;
	}
}

/*ARGSUSED*/
copyunix(howto, devtype, io)
	register howto;		/* d7 contains boot flags */
	register devtype;	/* d6 contains boot device */
	register io;
{
	struct exec x;
	register int i;
	register char *load;	/* a5 contains load addr for unix */
	register char *addr;

	i = read(io, (char *)&x, sizeof x);
	if (i != sizeof x ||
	    (x.a_magic != 0407 && x.a_magic != 0413 && x.a_magic != 0410))
		_stop("Bad format\n");
	printf("%d", x.a_text);
	if (x.a_magic == 0413 && lseek(io, 0x400, 0) == -1)
		goto shread;
	load = addr = lowram;
	if (read(io, (char *)addr, x.a_text) != x.a_text)
		goto shread;
	addr += x.a_text;
	if (x.a_magic == 0413 || x.a_magic == 0410)
		while ((int)addr & CLOFSET)
			*addr++ = 0;
	printf("+%d", x.a_data);
	if (read(io, addr, x.a_data) != x.a_data)
		goto shread;
	addr += x.a_data;
	printf("+%d", x.a_bss);
	x.a_bss += 128*512;	/* slop */
	for (i = 0; i < x.a_bss; i++)
		*addr++ = 0;
	x.a_entry += (int)lowram;
	printf(" start 0x%x\n", x.a_entry);
#ifdef __GNUC__
	asm("	movl %0,d7" : : "m" (howto));
	asm("	movl %0,d6" : : "m" (devtype));
	asm("	movl %0,a5" : : "a" (load));
#endif
	(*((int (*)()) x.a_entry))();
	exit();
shread:
	_stop("Short read\n");
}
Commit	Line	Data
af359dea	1	/*-
a8fd2d0d KM	2	* Copyright (c) 1982, 1986, 1990 The Regents of the University of California.
	3	* All rights reserved.
	4	*
af359dea C	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions
	7	* are met:
	8	* 1. Redistributions of source code must retain the above copyright
	9	* notice, this list of conditions and the following disclaimer.
	10	* 2. Redistributions in binary form must reproduce the above copyright
	11	* notice, this list of conditions and the following disclaimer in the
	12	* documentation and/or other materials provided with the distribution.
	13	* 3. All advertising materials mentioning features or use of this software
	14	* must display the following acknowledgement:
	15	* This product includes software developed by the University of
	16	* California, Berkeley and its contributors.
	17	* 4. Neither the name of the University nor the names of its contributors
	18	* may be used to endorse or promote products derived from this software
	19	* without specific prior written permission.
	20	*
	21	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	22	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	23	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	24	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	25	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	26	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	27	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	28	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	29	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	30	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	31	* SUCH DAMAGE.
a8fd2d0d	32	*
af359dea	33	* @(#)boot.c 7.4 (Berkeley) 5/5/91
a8fd2d0d KM	34	*/
a8fd2d0d KM	35
af359dea C	36	#include <sys/param.h>
af359dea C	37	#include <sys/reboot.h>
a8fd2d0d KM	38	#include <a.out.h>
a8fd2d0d KM	39	#include "saio.h"
a8fd2d0d KM	40
a8fd2d0d KM	41	#ifndef INSECURE
b28b3a13	42	#include "sys/stat.h"
a8fd2d0d KM	43	struct stat sb;
a8fd2d0d KM	44	#endif
af359dea	45	/* XXX -- see sys/reboot.h */
a8fd2d0d KM	46	#define B_MAKEDEV(a,u,p,t) \
	47	(((a) << B_ADAPTORSHIFT) \| ((u) << B_UNITSHIFT) \| \
	48	((p) << B_PARTITIONSHIFT) \| ((t) << B_TYPESHIFT))
	49
	50	/*
	51	* Boot program... arguments in `devtype' and `howto' determine
	52	* whether boot stops to ask for system name and which device
	53	* boot comes from.
	54	*/
	55
	56	/* Types in `devtype' specifying major device */
	57	char devname[][2] = {
af359dea C	58	'\0', '\0', /* 0 = ct */
	59	'\0', '\0', /* 1 = fd */
	60	'r', 'd', /* 2 = rd */
	61	'\0', '\0', /* 3 = sw */
	62	's', 'd', /* 4 = sd */
a8fd2d0d KM	63	};
	64	#define MAXTYPE (sizeof(devname) / sizeof(devname[0]))
	65
a8fd2d0d KM	66	char line[100];
	67
	68	int retry = 0;
	69	extern char *lowram;
	70	extern int noconsole;
	71	extern int howto, devtype;
	72
	73	#define MSUS (0xfffffedc)
	74
	75	char rom2mdev[] = {
	76	0, /* 0 - none */
	77	0, /* 1 - none */
	78	0, /* 2 - none */
	79	0, /* 3 - none */
	80	0, /* 4 - none */
	81	0, /* 5 - none */
	82	0, /* 6 - none */
	83	0, /* 7 - none */
	84	0, /* 8 - none */
	85	0, /* 9 - none */
	86	0, /* 10 - none */
	87	0, /* 11 - none */
	88	0, /* 12 - none */
	89	0, /* 13 - none */
	90	4, /* 14 - SCSI disk */
	91	0, /* 15 - none */
	92	2, /* 16 - CS/80 device on HPIB */
	93	2, /* 17 - CS/80 device on HPIB */
	94	0, /* 18 - none */
	95	0, /* 19 - none */
	96	0, /* 20 - none */
	97	0, /* 21 - none */
	98	0, /* 22 - none */
	99	0, /* 23 - none */
	100	0, /* 24 - none */
	101	0, /* 25 - none */
	102	0, /* 26 - none */
	103	0, /* 27 - none */
	104	0, /* 28 - none */
	105	0, /* 29 - none */
	106	0, /* 30 - none */
	107	0, /* 31 - none */
	108	};
	109
	110	main()
	111	{
	112	register type, part, unit, io;
	113	register char *cp;
	114
	115	printf("\nBoot\n");
	116	#ifdef JUSTASK
	117	howto = RB_ASKNAME\|RB_SINGLE;
	118	#else
	119	type = (devtype >> B_TYPESHIFT) & B_TYPEMASK;
	120	unit = (devtype >> B_UNITSHIFT) & B_UNITMASK;
	121	unit += 8 * ((devtype >> B_ADAPTORSHIFT) & B_ADAPTORMASK);
	122	part = (devtype >> B_PARTITIONSHIFT) & B_PARTITIONMASK;
	123	if ((howto & RB_ASKNAME) == 0) {
	124	if ((devtype & B_MAGICMASK) != B_DEVMAGIC) {
	125	/*
	126	* we have to map the ROM device type codes
	127	* to Unix major device numbers.
	128	*/
	129	type = rom2mdev[(char )MSUS & 0x1f];
130	devtype = (devtype &~ (B_TYPEMASK << B_TYPESHIFT))
131	\| (type << B_TYPESHIFT);
132	}
133	if (type >= 0 && type <= MAXTYPE && devname[type][0]) {
134	cp = line;
135	*cp++ = devname[type][0];
136	*cp++ = devname[type][1];
137	*cp++ = '(';
138	if (unit >= 10)
139	*cp++ = unit / 10 + '0';
140	*cp++ = unit % 10 + '0';
141	*cp++ = ',';
142	*cp++ = part + '0';
143	*cp++ = ')';
144	strcpy(cp, UNIX);
145	} else
146	howto = RB_SINGLE\|RB_ASKNAME;
147	}
148	#endif
149	for (;;) {
150	if (!noconsole && (howto & RB_ASKNAME)) {
151	printf(": ");
152	gets(line);
153	} else
154	printf(": %s\n", line);
155	io = open(line, 0);
156	if (io >= 0) {
157	#ifndef INSECURE
158	(void) fstat(io, &sb);
159	if (sb.st_uid \|\| (sb.st_mode & 2)) {
160	printf("non-secure file, will not load\n");
161	howto = RB_SINGLE\|RB_ASKNAME;
162	continue;
163	}
164	#endif
165	if (howto & RB_ASKNAME) {
166	/*
167	* Build up devtype register to pass on to
168	* booted program.
169	*/
170	cp = line;
171	for (type = 0; type <= MAXTYPE; type++)
172	if ((devname[type][0] == cp[0]) &&
173	(devname[type][1] == cp[1]))
174	break;
175	if (type <= MAXTYPE) {
176	cp += 3;
177	unit = *cp++ - '0';
178	if (cp >= '0' && cp <= '9')
179	unit = unit * 10 + *cp++ - '0';
180	cp++;
181	part = atol(cp);
182	devtype = B_MAKEDEV(unit >> 3, unit & 7, part, type);
183	}
184	}
185	devtype \|= B_DEVMAGIC;
186	copyunix(howto, devtype, io);
187	close(io);
188	howto = RB_SINGLE\|RB_ASKNAME;
189	}
190	bad:
191	if (++retry > 2)
192	howto = RB_SINGLE\|RB_ASKNAME;
193	}
194	}
195
196	/ARGSUSED/
197	copyunix(howto, devtype, io)
198	register howto; /* d7 contains boot flags */
199	register devtype; /* d6 contains boot device */
200	register io;
201	{
202	struct exec x;
203	register int i;
204	register char load; / a5 contains load addr for unix */
205	register char *addr;
206
207	i = read(io, (char *)&x, sizeof x);
208	if (i != sizeof x \|\|
209	(x.a_magic != 0407 && x.a_magic != 0413 && x.a_magic != 0410))
210	_stop("Bad format\n");
211	printf("%d", x.a_text);
212	if (x.a_magic == 0413 && lseek(io, 0x400, 0) == -1)
213	goto shread;
214	load = addr = lowram;
215	if (read(io, (char *)addr, x.a_text) != x.a_text)
216	goto shread;
217	addr += x.a_text;
218	if (x.a_magic == 0413 \|\| x.a_magic == 0410)
219	while ((int)addr & CLOFSET)
220	*addr++ = 0;
221	printf("+%d", x.a_data);
222	if (read(io, addr, x.a_data) != x.a_data)
223	goto shread;
224	addr += x.a_data;
225	printf("+%d", x.a_bss);
226	x.a_bss += 128512; / slop */
227	for (i = 0; i < x.a_bss; i++)
228	*addr++ = 0;
229	x.a_entry += (int)lowram;
230	printf(" start 0x%x\n", x.a_entry);
231	#ifdef __GNUC__
232	asm(" movl %0,d7" : : "m" (howto));
233	asm(" movl %0,d6" : : "m" (devtype));
234	asm(" movl %0,a5" : : "a" (load));
235	#endif
236	(((int ()()) x.a_entry))();
237	exit();
238	shread:
239	_stop("Short read\n");
240	}