autoconf.c revision 1.54 
1/*	$NetBSD: autoconf.c,v 1.54 1997/07/23 10:47:12 is Exp $	*/
2
3/*
4 * Copyright (c) 1994 Christian E. Hopps
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 *    must display the following acknowledgement:
17 *      This product includes software developed by Christian E. Hopps.
18 * 4. The name of the author may not be used to endorse or promote products
19 *    derived from this software without specific prior written permission
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32#include <sys/param.h>
33#include <sys/systm.h>
34#include <sys/reboot.h>
35#include <sys/conf.h>
36#include <sys/buf.h>
37#include <sys/device.h>
38#include <sys/disklabel.h>
39#include <sys/disk.h>
40#include <machine/cpu.h>
41#include <amiga/amiga/cfdev.h>
42#include <amiga/amiga/device.h>
43#include <amiga/amiga/custom.h>
44
45void findroot __P((struct device **, int *));
46void mbattach __P((struct device *, struct device *, void *));
47int mbprint __P((void *, const char *));
48int mbmatch __P((struct device *, struct cfdata *, void *));
49
50int cold;	/* 1 if still booting */
51#include <sys/kernel.h>
52
53struct devnametobdevmaj amiga_nam2blk[] = {
54	{ "fd",		2 },
55	{ "sd",		4 },
56	{ "cd",		7 },
57#ifdef notyet
58	{ "md",		XXX },
59#endif
60	{ NULL,		0 },
61};
62u_long boot_partition;
63
64/*
65 * called at boot time, configure all devices on system
66 */
67void
68configure()
69{
70	int s;
71
72	/*
73	 * this is the real thing baby (i.e. not console init)
74	 */
75	amiga_realconfig = 1;
76#ifdef DRACO
77	if (is_draco()) {
78		*draco_intena &= ~DRIRQ_GLOBAL;
79	} else
80#endif
81	custom.intena = INTF_INTEN;
82	s = splhigh();
83
84	if (config_rootfound("mainbus", "mainbus") == NULL)
85		panic("no mainbus found");
86
87#ifdef DEBUG_KERNEL_START
88	printf("survived autoconf, going to enable interrupts\n");
89#endif
90
91#ifdef DRACO
92	if (is_draco()) {
93		*draco_intena |= DRIRQ_GLOBAL;
94		/* softints always enabled */
95	} else
96#endif
97	{
98		custom.intena = INTF_SETCLR | INTF_INTEN;
99
100		/* also enable hardware aided software interrupts */
101		custom.intena = INTF_SETCLR | INTF_SOFTINT;
102	}
103	splx(s);
104#ifdef DEBUG_KERNEL_START
105	printf("survived interrupt enable\n");
106#endif
107	cold = 0;
108}
109
110void
111cpu_rootconf()
112{
113	struct device *booted_device;
114	int booted_partition;
115
116	findroot(&booted_device, &booted_partition);
117#ifdef DEBUG_KERNEL_START
118	printf("survived findroot()\n");
119#endif
120	setroot(booted_device, booted_partition, amiga_nam2blk);
121#ifdef DEBUG_KERNEL_START
122	printf("survived setroot()\n");
123#endif
124}
125
126/*ARGSUSED*/
127int
128simple_devprint(auxp, pnp)
129	void *auxp;
130	const char *pnp;
131{
132	return(QUIET);
133}
134
135int
136matchname(fp, sp)
137	char *fp, *sp;
138{
139	int len;
140
141	len = strlen(fp);
142	if (strlen(sp) != len)
143		return(0);
144	if (bcmp(fp, sp, len) == 0)
145		return(1);
146	return(0);
147}
148
149/*
150 * use config_search to find appropriate device, then call that device
151 * directly with NULL device variable storage.  A device can then
152 * always tell the difference betwean the real and console init
153 * by checking for NULL.
154 */
155int
156amiga_config_found(pcfp, pdp, auxp, pfn)
157	struct cfdata *pcfp;
158	struct device *pdp;
159	void *auxp;
160	cfprint_t pfn;
161{
162	struct device temp;
163	struct cfdata *cf;
164
165	if (amiga_realconfig)
166		return(config_found(pdp, auxp, pfn) != NULL);
167
168	if (pdp == NULL)
169		pdp = &temp;
170
171	pdp->dv_cfdata = pcfp;
172	if ((cf = config_search((cfmatch_t)NULL, pdp, auxp)) != NULL) {
173		cf->cf_attach->ca_attach(pdp, NULL, auxp);
174		pdp->dv_cfdata = NULL;
175		return(1);
176	}
177	pdp->dv_cfdata = NULL;
178	return(0);
179}
180
181/*
182 * this function needs to get enough configured to do a console
183 * basically this means start attaching the grfxx's that support
184 * the console. Kinda hacky but it works.
185 */
186void
187config_console()
188{
189	struct cfdata *cf;
190
191	/*
192	 * we need mainbus' cfdata.
193	 */
194	cf = config_rootsearch(NULL, "mainbus", "mainbus");
195	if (cf == NULL) {
196		panic("no mainbus");
197	}
198	/*
199	 * delay clock calibration.
200	 */
201	amiga_config_found(cf, NULL, "clock", NULL);
202
203	/*
204	 * internal grf.
205	 */
206#ifdef DRACO
207	if (!(is_draco()))
208#endif
209		amiga_config_found(cf, NULL, "grfcc", NULL);
210	/*
211	 * zbus knows when its not for real and will
212	 * only configure the appropriate hardware
213	 */
214	amiga_config_found(cf, NULL, "zbus", NULL);
215}
216
217/*
218 * mainbus driver
219 */
220struct cfattach mainbus_ca = {
221	sizeof(struct device), mbmatch, mbattach
222};
223
224struct cfdriver mainbus_cd = {
225	NULL, "mainbus", DV_DULL, NULL, 0
226};
227
228int
229mbmatch(pdp, cfp, auxp)
230	struct device	*pdp;
231	struct cfdata	*cfp;
232	void		*auxp;
233{
234
235	if (cfp->cf_unit > 0)
236		return(0);
237	/*
238	 * We are always here
239	 */
240	return(1);
241}
242
243/*
244 * "find" all the things that should be there.
245 */
246void
247mbattach(pdp, dp, auxp)
248	struct device *pdp, *dp;
249	void *auxp;
250{
251	printf("\n");
252	config_found(dp, "clock", simple_devprint);
253	if (is_a3000() || is_a4000()) {
254		config_found(dp, "a34kbbc", simple_devprint);
255	} else if (
256#ifdef DRACO
257	    !is_draco() &&
258#endif
259	    !is_a1200()) {
260
261		config_found(dp, "a2kbbc", simple_devprint);
262	}
263#ifdef DRACO
264	if (is_draco()) {
265		config_found(dp, "drbbc", simple_devprint);
266		config_found(dp, "kbd", simple_devprint);
267		config_found(dp, "drsc", simple_devprint);
268		config_found(dp, "drcom", simple_devprint);
269		config_found(dp, "drcom", simple_devprint);
270		/*
271		 * XXX -- missing here:
272		 * SuperIO chip parallel, floppy
273		 * or maybe just make that into a pseudo
274		 * ISA bus.
275		 */
276	} else
277#endif
278	{
279		config_found(dp, "ser", simple_devprint);
280		config_found(dp, "par", simple_devprint);
281		config_found(dp, "kbd", simple_devprint);
282		config_found(dp, "ms", simple_devprint);
283		config_found(dp, "ms", simple_devprint);
284		config_found(dp, "grfcc", simple_devprint);
285		config_found(dp, "fdc", simple_devprint);
286	}
287	if (is_a4000() || is_a1200())
288		config_found(dp, "idesc", simple_devprint);
289	if (is_a4000())			/* Try to configure A4000T SCSI */
290		config_found(dp, "afsc", simple_devprint);
291	config_found(dp, "zbus", simple_devprint);
292	if (is_a3000())
293		config_found(dp, "ahsc", simple_devprint);
294#ifdef DRACO
295	if (!is_draco())
296#endif
297		config_found(dp, "aucc", simple_devprint);
298
299}
300
301int
302mbprint(auxp, pnp)
303	void *auxp;
304	const char *pnp;
305{
306	if (pnp)
307		printf("%s at %s", (char *)auxp, pnp);
308	return(UNCONF);
309}
310
311/*
312 * The system will assign the "booted device" indicator (and thus
313 * rootdev if rootspec is wildcarded) to the first partition 'a'
314 * in preference of boot.  However, it does walk unit backwards
315 * to remain compatible with the old Amiga method of picking the
316 * last root found.
317 */
318#include <sys/fcntl.h>		/* XXXX and all that uses it */
319#include <sys/proc.h>		/* XXXX and all that uses it */
320
321#include "fd.h"
322#include "sd.h"
323#include "cd.h"
324
325#if NFD > 0
326extern  struct cfdriver fd_cd;
327#endif
328#if NSD > 0
329extern  struct cfdriver sd_cd;
330#endif
331#if NCD > 0
332extern  struct cfdriver cd_cd;
333#endif
334
335struct cfdriver *genericconf[] = {
336#if NFD > 0
337	&fd_cd,
338#endif
339#if NSD > 0
340	&sd_cd,
341#endif
342#if NCD > 0
343	&cd_cd,
344#endif
345	NULL,
346};
347
348void
349findroot(devpp, partp)
350	struct device **devpp;
351	int *partp;
352{
353	struct disk *dkp;
354	struct partition *pp;
355	struct device **devs;
356	int i, maj, unit;
357
358	/*
359	 * Default to "not found".
360	 */
361	*devpp = NULL;
362
363	/* always partition 'a' */
364	*partp = 0;
365
366#if NSD > 0
367	/*
368	 * If we have the boot partition offset (boot_partition), try
369	 * to locate the device corresponding to that partition.
370	 */
371	if (boot_partition != 0) {
372	 	struct bdevsw *bdp;
373		int i;
374
375		for (unit = 0; unit < sd_cd.cd_ndevs; ++unit) {
376			if (sd_cd.cd_devs[unit] == NULL)
377				continue;
378
379			/*
380			 * Find the disk corresponding to the current
381			 * device.
382			 */
383			devs = (struct device **)sd_cd.cd_devs;
384			if ((dkp = disk_find(devs[unit]->dv_xname)) == NULL)
385				continue;
386
387			if (dkp->dk_driver == NULL ||
388			    dkp->dk_driver->d_strategy == NULL)
389				continue;
390			for (bdp = bdevsw; bdp < (bdevsw + nblkdev); bdp++)
391				if (bdp->d_strategy ==
392				    dkp->dk_driver->d_strategy)
393					break;
394			if (bdp->d_open(MAKEDISKDEV(4, unit, 0),
395			    FREAD | FNONBLOCK, 0, curproc))
396				continue;
397			bdp->d_close(MAKEDISKDEV(4, unit, 0),
398			    FREAD | FNONBLOCK, 0, curproc);
399			pp = &dkp->dk_label->d_partitions[0];
400			for (i = 0; i < dkp->dk_label->d_npartitions;
401			    i++, pp++) {
402				if (pp->p_size == 0 ||
403				    (pp->p_fstype != FS_BSDFFS &&
404				    pp->p_fstype != FS_SWAP))
405					continue;
406				if (pp->p_offset == boot_partition) {
407					if (*devpp == NULL) {
408						*devpp = devs[unit];
409						*partp = i;
410					} else
411						printf("Ambiguous boot device\n");
412				}
413			}
414		}
415	}
416	if (*devpp != NULL)
417		return;		/* we found the boot device */
418#endif
419
420	for (i = 0; genericconf[i] != NULL; i++) {
421		for (unit = genericconf[i]->cd_ndevs - 1; unit >= 0; unit--) {
422			if (genericconf[i]->cd_devs[unit] == NULL)
423				continue;
424
425			/*
426			 * Find the disk structure corresponding to the
427			 * current device.
428			 */
429			devs = (struct device **)genericconf[i]->cd_devs;
430			if ((dkp = disk_find(devs[unit]->dv_xname)) == NULL)
431				continue;
432
433			if (dkp->dk_driver == NULL ||
434			    dkp->dk_driver->d_strategy == NULL)
435				continue;
436
437			for (maj = 0; maj < nblkdev; maj++)
438				if (bdevsw[maj].d_strategy ==
439				    dkp->dk_driver->d_strategy)
440					break;
441#ifdef DIAGNOSTIC
442			if (maj >= nblkdev)
443				panic("findroot: impossible");
444#endif
445
446			/* Open disk; forces read of disklabel. */
447			if ((*bdevsw[maj].d_open)(MAKEDISKDEV(maj,
448			    unit, 0), FREAD|FNONBLOCK, 0, &proc0))
449				continue;
450			(void)(*bdevsw[maj].d_close)(MAKEDISKDEV(maj,
451			    unit, 0), FREAD|FNONBLOCK, 0, &proc0);
452
453			pp = &dkp->dk_label->d_partitions[0];
454			if (pp->p_size != 0 && pp->p_fstype == FS_BSDFFS) {
455				*devpp = devs[unit];
456				*partp = 0;
457				return;
458			}
459		}
460	}
461}
462
463/*
464 * Try to determine, of this machine is an A3000, which has a builtin
465 * realtime clock and scsi controller, so that this hardware is only
466 * included as "configured" if this IS an A3000
467 */
468
469int a3000_flag = 1;		/* patchable */
470#ifdef A4000
471int a4000_flag = 1;		/* patchable - default to A4000 */
472#else
473int a4000_flag = 0;		/* patchable */
474#endif
475
476int
477is_a3000()
478{
479	/* this is a dirty kludge.. but how do you do this RIGHT ? :-) */
480	extern long boot_fphystart;
481	short sc;
482
483	if ((machineid >> 16) == 3000)
484		return (1);			/* It's an A3000 */
485	if (machineid >> 16)
486		return (0);			/* It's not an A3000 */
487	/* Machine type is unknown, so try to guess it */
488	/* where is fastram on the A4000 ?? */
489	/* if fastram is below 0x07000000, assume it's not an A3000 */
490	if (boot_fphystart < 0x07000000)
491		return(0);
492	/*
493	 * OK, fastram starts at or above 0x07000000, check specific
494	 * machines
495	 */
496	for (sc = 0; sc < ncfdev; sc++) {
497		switch (cfdev[sc].rom.manid) {
498		case 2026:		/* Progressive Peripherals, Inc */
499			switch (cfdev[sc].rom.prodid) {
500			case 0:		/* PPI Mercury - A3000 */
501			case 1:		/* PP&S A3000 '040 */
502				return(1);
503			case 150:	/* PPI Zeus - it's an A2000 */
504			case 105:	/* PP&S A2000 '040 */
505			case 187:	/* PP&S A500 '040 */
506				return(0);
507			}
508			break;
509
510		case 2112:			/* IVS */
511			switch (cfdev[sc].rom.prodid) {
512			case 242:
513				return(0);	/* A2000 accelerator? */
514			}
515			break;
516		}
517	}
518	return (a3000_flag);		/* XXX let flag tell now */
519}
520
521int
522is_a4000()
523{
524	if ((machineid >> 16) == 4000)
525		return (1);		/* It's an A4000 */
526	if ((machineid >> 16) == 1200)
527		return (0);		/* It's an A1200, so not A4000 */
528#ifdef DRACO
529	if (is_draco())
530		return (0);
531#endif
532	/* Do I need this any more? */
533	if ((custom.deniseid & 0xff) == 0xf8)
534		return (1);
535#ifdef DEBUG
536	if (a4000_flag)
537		printf("Denise ID = %04x\n", (unsigned short)custom.deniseid);
538#endif
539	if (machineid >> 16)
540		return (0);		/* It's not an A4000 */
541	return (a4000_flag);		/* Machine type not set */
542}
543
544int
545is_a1200()
546{
547	if ((machineid >> 16) == 1200)
548		return (1);		/* It's an A1200 */
549	return (0);			/* Machine type not set */
550}
551
552#ifdef DRACO
553int
554is_draco()
555{
556	if ((machineid >> 24) == 0x7D)
557		return ((machineid >> 16) & 0xFF);
558	return (0);
559}
560#endif
561