autoconf.c revision 1.63 
1/*	$NetBSD: autoconf.c,v 1.63 1999/04/01 00:17:46 thorpej 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	{ "md",		15 },
58	{ NULL,		0 },
59};
60u_long boot_partition;
61
62/*
63 * called at boot time, configure all devices on system
64 */
65void
66configure()
67{
68	int s;
69#ifdef DEBUG_KERNEL_START
70	int i;
71#endif
72
73	/*
74	 * this is the real thing baby (i.e. not console init)
75	 */
76	amiga_realconfig = 1;
77#ifdef DRACO
78	if (is_draco()) {
79		*draco_intena &= ~DRIRQ_GLOBAL;
80	} else
81#endif
82	custom.intena = INTF_INTEN;
83	s = splhigh();
84
85	if (config_rootfound("mainbus", "mainbus") == NULL)
86		panic("no mainbus found");
87
88#ifdef DEBUG_KERNEL_START
89	printf("survived autoconf, going to enable interrupts\n");
90#endif
91
92#ifdef DRACO
93	if (is_draco()) {
94		*draco_intena |= DRIRQ_GLOBAL;
95		/* softints always enabled */
96	} else
97#endif
98	{
99		custom.intena = INTF_SETCLR | INTF_INTEN;
100
101		/* also enable hardware aided software interrupts */
102		custom.intena = INTF_SETCLR | INTF_SOFTINT;
103	}
104#ifdef DEBUG_KERNEL_START
105	for (i=splhigh(); i>=s ;i-=0x100) {
106		splx(i);
107		printf("%d...", (i>>8) & 7);
108	}
109	printf("survived interrupt enable\n");
110#else
111	splx(s);
112#endif
113	cold = 0;
114#ifdef DEBUG_KERNEL_START
115	printf("survived configure...\n");
116#endif
117}
118
119void
120cpu_rootconf()
121{
122	struct device *booted_device;
123	int booted_partition;
124
125	findroot(&booted_device, &booted_partition);
126#ifdef DEBUG_KERNEL_START
127	printf("survived findroot()\n");
128#endif
129	setroot(booted_device, booted_partition, amiga_nam2blk);
130#ifdef DEBUG_KERNEL_START
131	printf("survived setroot()\n");
132#endif
133}
134
135/*ARGSUSED*/
136int
137simple_devprint(auxp, pnp)
138	void *auxp;
139	const char *pnp;
140{
141	return(QUIET);
142}
143
144int
145matchname(fp, sp)
146	char *fp, *sp;
147{
148	int len;
149
150	len = strlen(fp);
151	if (strlen(sp) != len)
152		return(0);
153	if (bcmp(fp, sp, len) == 0)
154		return(1);
155	return(0);
156}
157
158/*
159 * use config_search to find appropriate device, then call that device
160 * directly with NULL device variable storage.  A device can then
161 * always tell the difference betwean the real and console init
162 * by checking for NULL.
163 */
164int
165amiga_config_found(pcfp, pdp, auxp, pfn)
166	struct cfdata *pcfp;
167	struct device *pdp;
168	void *auxp;
169	cfprint_t pfn;
170{
171	struct device temp;
172	struct cfdata *cf;
173
174	if (amiga_realconfig)
175		return(config_found(pdp, auxp, pfn) != NULL);
176
177	if (pdp == NULL)
178		pdp = &temp;
179
180	pdp->dv_cfdata = pcfp;
181	if ((cf = config_search((cfmatch_t)NULL, pdp, auxp)) != NULL) {
182		cf->cf_attach->ca_attach(pdp, NULL, auxp);
183		pdp->dv_cfdata = NULL;
184		return(1);
185	}
186	pdp->dv_cfdata = NULL;
187	return(0);
188}
189
190/*
191 * this function needs to get enough configured to do a console
192 * basically this means start attaching the grfxx's that support
193 * the console. Kinda hacky but it works.
194 */
195void
196config_console()
197{
198	struct cfdata *cf;
199
200	/*
201	 * we need mainbus' cfdata.
202	 */
203	cf = config_rootsearch(NULL, "mainbus", "mainbus");
204	if (cf == NULL) {
205		panic("no mainbus");
206	}
207	/*
208	 * delay clock calibration.
209	 */
210	amiga_config_found(cf, NULL, "clock", NULL);
211
212	/*
213	 * internal grf.
214	 */
215#ifdef DRACO
216	if (!(is_draco()))
217#endif
218		amiga_config_found(cf, NULL, "grfcc", NULL);
219	/*
220	 * zbus knows when its not for real and will
221	 * only configure the appropriate hardware
222	 */
223	amiga_config_found(cf, NULL, "zbus", NULL);
224}
225
226/*
227 * mainbus driver
228 */
229struct cfattach mainbus_ca = {
230	sizeof(struct device), mbmatch, mbattach
231};
232
233int
234mbmatch(pdp, cfp, auxp)
235	struct device	*pdp;
236	struct cfdata	*cfp;
237	void		*auxp;
238{
239
240	if (cfp->cf_unit > 0)
241		return(0);
242	/*
243	 * We are always here
244	 */
245	return(1);
246}
247
248/*
249 * "find" all the things that should be there.
250 */
251void
252mbattach(pdp, dp, auxp)
253	struct device *pdp, *dp;
254	void *auxp;
255{
256	printf("\n");
257	config_found(dp, "clock", simple_devprint);
258	if (is_a3000() || is_a4000()) {
259		config_found(dp, "a34kbbc", simple_devprint);
260	} else
261#ifdef DRACO
262	if (!is_draco())
263#endif
264	{
265		config_found(dp, "a2kbbc", simple_devprint);
266	}
267#ifdef DRACO
268	if (is_draco()) {
269		config_found(dp, "drbbc", simple_devprint);
270		config_found(dp, "kbd", simple_devprint);
271		config_found(dp, "drsc", simple_devprint);
272		config_found(dp, "drsupio", simple_devprint);
273	} else
274#endif
275	{
276		config_found(dp, "ser", simple_devprint);
277		config_found(dp, "par", simple_devprint);
278		config_found(dp, "kbd", simple_devprint);
279		config_found(dp, "ms", simple_devprint);
280		config_found(dp, "ms", simple_devprint);
281		config_found(dp, "grfcc", simple_devprint);
282		config_found(dp, "fdc", simple_devprint);
283	}
284	if (is_a4000() || is_a1200())
285		config_found(dp, "idesc", simple_devprint);
286	if (is_a4000())			/* Try to configure A4000T SCSI */
287		config_found(dp, "afsc", simple_devprint);
288	if (is_a3000())
289		config_found(dp, "ahsc", simple_devprint);
290#ifdef DRACO
291	if (!is_draco())
292#endif
293		config_found(dp, "aucc", simple_devprint);
294
295	config_found(dp, "zbus", simple_devprint);
296}
297
298int
299mbprint(auxp, pnp)
300	void *auxp;
301	const char *pnp;
302{
303	if (pnp)
304		printf("%s at %s", (char *)auxp, pnp);
305	return(UNCONF);
306}
307
308/*
309 * The system will assign the "booted device" indicator (and thus
310 * rootdev if rootspec is wildcarded) to the first partition 'a'
311 * in preference of boot.  However, it does walk unit backwards
312 * to remain compatible with the old Amiga method of picking the
313 * last root found.
314 */
315#include <sys/fcntl.h>		/* XXXX and all that uses it */
316#include <sys/proc.h>		/* XXXX and all that uses it */
317
318#include "fd.h"
319#include "sd.h"
320#include "cd.h"
321
322#if NFD > 0
323extern  struct cfdriver fd_cd;
324#endif
325#if NSD > 0
326extern  struct cfdriver sd_cd;
327#endif
328#if NCD > 0
329extern  struct cfdriver cd_cd;
330#endif
331
332struct cfdriver *genericconf[] = {
333#if NFD > 0
334	&fd_cd,
335#endif
336#if NSD > 0
337	&sd_cd,
338#endif
339#if NCD > 0
340	&cd_cd,
341#endif
342	NULL,
343};
344
345void
346findroot(devpp, partp)
347	struct device **devpp;
348	int *partp;
349{
350	struct disk *dkp;
351	struct partition *pp;
352	struct device **devs;
353	int i, maj, unit;
354
355	/*
356	 * Default to "not found".
357	 */
358	*devpp = NULL;
359
360	/* always partition 'a' */
361	*partp = 0;
362
363#if NSD > 0
364	/*
365	 * If we have the boot partition offset (boot_partition), try
366	 * to locate the device corresponding to that partition.
367	 */
368#ifdef DEBUG_KERNEL_START
369	printf("Boot partition offset is %ld\n", boot_partition);
370#endif
371	if (boot_partition != 0) {
372	 	struct bdevsw *bdp;
373		int i;
374
375		for (unit = 0; unit < sd_cd.cd_ndevs; ++unit) {
376#ifdef DEBUG_KERNEL_START
377			printf("probing for sd%d\n", unit);
378#endif
379			if (sd_cd.cd_devs[unit] == NULL)
380				continue;
381
382			/*
383			 * Find the disk corresponding to the current
384			 * device.
385			 */
386			devs = (struct device **)sd_cd.cd_devs;
387			if ((dkp = disk_find(devs[unit]->dv_xname)) == NULL)
388				continue;
389
390			if (dkp->dk_driver == NULL ||
391			    dkp->dk_driver->d_strategy == NULL)
392				continue;
393			for (bdp = bdevsw; bdp < (bdevsw + nblkdev); bdp++)
394				if (bdp->d_strategy ==
395				    dkp->dk_driver->d_strategy)
396					break;
397			if (bdp->d_open(MAKEDISKDEV(4, unit, RAW_PART),
398			    FREAD | FNONBLOCK, 0, curproc))
399				continue;
400			bdp->d_close(MAKEDISKDEV(4, unit, RAW_PART),
401			    FREAD | FNONBLOCK, 0, curproc);
402			pp = &dkp->dk_label->d_partitions[0];
403			for (i = 0; i < dkp->dk_label->d_npartitions;
404			    i++, pp++) {
405#ifdef DEBUG_KERNEL_START
406				printf("sd%d%c type %d offset %d size %d\n",
407					unit, i+'a', pp->p_fstype,
408					pp->p_offset, pp->p_size);
409#endif
410				if (pp->p_size == 0 ||
411				    (pp->p_fstype != FS_BSDFFS &&
412				    pp->p_fstype != FS_SWAP))
413					continue;
414				if (pp->p_offset == boot_partition) {
415					if (*devpp == NULL) {
416						*devpp = devs[unit];
417						*partp = i;
418					} else
419						printf("Ambiguous boot device\n");
420				}
421			}
422		}
423	}
424	if (*devpp != NULL)
425		return;		/* we found the boot device */
426#endif
427
428	for (i = 0; genericconf[i] != NULL; i++) {
429		for (unit = genericconf[i]->cd_ndevs - 1; unit >= 0; unit--) {
430			if (genericconf[i]->cd_devs[unit] == NULL)
431				continue;
432
433			/*
434			 * Find the disk structure corresponding to the
435			 * current device.
436			 */
437			devs = (struct device **)genericconf[i]->cd_devs;
438			if ((dkp = disk_find(devs[unit]->dv_xname)) == NULL)
439				continue;
440
441			if (dkp->dk_driver == NULL ||
442			    dkp->dk_driver->d_strategy == NULL)
443				continue;
444
445			for (maj = 0; maj < nblkdev; maj++)
446				if (bdevsw[maj].d_strategy ==
447				    dkp->dk_driver->d_strategy)
448					break;
449#ifdef DIAGNOSTIC
450			if (maj >= nblkdev)
451				panic("findroot: impossible");
452#endif
453
454			/* Open disk; forces read of disklabel. */
455			if ((*bdevsw[maj].d_open)(MAKEDISKDEV(maj,
456			    unit, 0), FREAD|FNONBLOCK, 0, &proc0))
457				continue;
458			(void)(*bdevsw[maj].d_close)(MAKEDISKDEV(maj,
459			    unit, 0), FREAD|FNONBLOCK, 0, &proc0);
460
461			pp = &dkp->dk_label->d_partitions[0];
462			if (pp->p_size != 0 && pp->p_fstype == FS_BSDFFS) {
463				*devpp = devs[unit];
464				*partp = 0;
465				return;
466			}
467		}
468	}
469}
470
471/*
472 * Try to determine, of this machine is an A3000, which has a builtin
473 * realtime clock and scsi controller, so that this hardware is only
474 * included as "configured" if this IS an A3000
475 */
476
477int a3000_flag = 1;		/* patchable */
478#ifdef A4000
479int a4000_flag = 1;		/* patchable - default to A4000 */
480#else
481int a4000_flag = 0;		/* patchable */
482#endif
483
484int
485is_a3000()
486{
487	/* this is a dirty kludge.. but how do you do this RIGHT ? :-) */
488	extern long boot_fphystart;
489	short sc;
490
491	if ((machineid >> 16) == 3000)
492		return (1);			/* It's an A3000 */
493	if (machineid >> 16)
494		return (0);			/* It's not an A3000 */
495	/* Machine type is unknown, so try to guess it */
496	/* where is fastram on the A4000 ?? */
497	/* if fastram is below 0x07000000, assume it's not an A3000 */
498	if (boot_fphystart < 0x07000000)
499		return(0);
500	/*
501	 * OK, fastram starts at or above 0x07000000, check specific
502	 * machines
503	 */
504	for (sc = 0; sc < ncfdev; sc++) {
505		switch (cfdev[sc].rom.manid) {
506		case 2026:		/* Progressive Peripherals, Inc */
507			switch (cfdev[sc].rom.prodid) {
508			case 0:		/* PPI Mercury - A3000 */
509			case 1:		/* PP&S A3000 '040 */
510				return(1);
511			case 150:	/* PPI Zeus - it's an A2000 */
512			case 105:	/* PP&S A2000 '040 */
513			case 187:	/* PP&S A500 '040 */
514				return(0);
515			}
516			break;
517
518		case 2112:			/* IVS */
519			switch (cfdev[sc].rom.prodid) {
520			case 242:
521				return(0);	/* A2000 accelerator? */
522			}
523			break;
524		}
525	}
526	return (a3000_flag);		/* XXX let flag tell now */
527}
528
529int
530is_a4000()
531{
532	if ((machineid >> 16) == 4000)
533		return (1);		/* It's an A4000 */
534	if ((machineid >> 16) == 1200)
535		return (0);		/* It's an A1200, so not A4000 */
536#ifdef DRACO
537	if (is_draco())
538		return (0);
539#endif
540	/* Do I need this any more? */
541	if ((custom.deniseid & 0xff) == 0xf8)
542		return (1);
543#ifdef DEBUG
544	if (a4000_flag)
545		printf("Denise ID = %04x\n", (unsigned short)custom.deniseid);
546#endif
547	if (machineid >> 16)
548		return (0);		/* It's not an A4000 */
549	return (a4000_flag);		/* Machine type not set */
550}
551
552int
553is_a1200()
554{
555	if ((machineid >> 16) == 1200)
556		return (1);		/* It's an A1200 */
557	return (0);			/* Machine type not set */
558}
559