autoconf.c revision 1.72 
1/*	$NetBSD: autoconf.c,v 1.72 2000/03/30 20:58:39 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
50#include <sys/kernel.h>
51
52u_long boot_partition;
53
54/*
55 * called at boot time, configure all devices on system
56 */
57void
58cpu_configure()
59{
60	int s;
61#ifdef DEBUG_KERNEL_START
62	int i;
63#endif
64
65	/*
66	 * this is the real thing baby (i.e. not console init)
67	 */
68	amiga_realconfig = 1;
69#ifdef DRACO
70	if (is_draco()) {
71		*draco_intena &= ~DRIRQ_GLOBAL;
72	} else
73#endif
74	custom.intena = INTF_INTEN;
75	s = splhigh();
76
77	if (config_rootfound("mainbus", "mainbus") == NULL)
78		panic("no mainbus found");
79
80#ifdef DEBUG_KERNEL_START
81	printf("survived autoconf, going to enable interrupts\n");
82#endif
83
84#ifdef DRACO
85	if (is_draco()) {
86		*draco_intena |= DRIRQ_GLOBAL;
87		/* softints always enabled */
88	} else
89#endif
90	{
91		custom.intena = INTF_SETCLR | INTF_INTEN;
92
93		/* also enable hardware aided software interrupts */
94		custom.intena = INTF_SETCLR | INTF_SOFTINT;
95	}
96#ifdef DEBUG_KERNEL_START
97	for (i=splhigh(); i>=s ;i-=0x100) {
98		splx(i);
99		printf("%d...", (i>>8) & 7);
100	}
101	printf("survived interrupt enable\n");
102#else
103	splx(s);
104#endif
105#ifdef DEBUG_KERNEL_START
106	printf("survived configure...\n");
107#endif
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);
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	/*
212	 * zbus knows when its not for real and will
213	 * only configure the appropriate hardware
214	 */
215	amiga_config_found(cf, NULL, "zbus", NULL);
216}
217
218/*
219 * mainbus driver
220 */
221struct cfattach mainbus_ca = {
222	sizeof(struct device), mbmatch, mbattach
223};
224
225int
226mbmatch(pdp, cfp, auxp)
227	struct device	*pdp;
228	struct cfdata	*cfp;
229	void		*auxp;
230{
231#if 0	/*
232	 * XXX is this right? but we need to be found twice
233	 * (early console init hack)
234	 */
235	static int mainbus_matched = 0;
236
237	/* Allow only one instance. */
238	if (mainbus_matched)
239		return (0);
240
241	mainbus_matched = 1;
242#endif
243	return (1);
244}
245
246/*
247 * "find" all the things that should be there.
248 */
249void
250mbattach(pdp, dp, auxp)
251	struct device *pdp, *dp;
252	void *auxp;
253{
254	printf("\n");
255	config_found(dp, "clock", simple_devprint);
256	if (is_a3000() || is_a4000()) {
257		config_found(dp, "a34kbbc", simple_devprint);
258	} else
259#ifdef DRACO
260	if (!is_draco())
261#endif
262	{
263		config_found(dp, "a2kbbc", simple_devprint);
264	}
265#ifdef DRACO
266	if (is_draco()) {
267		config_found(dp, "drbbc", simple_devprint);
268		config_found(dp, "kbd", simple_devprint);
269		config_found(dp, "drsc", simple_devprint);
270		config_found(dp, "drsupio", simple_devprint);
271	} else
272#endif
273	{
274		config_found(dp, "ser", simple_devprint);
275		config_found(dp, "par", simple_devprint);
276		config_found(dp, "kbd", simple_devprint);
277		config_found(dp, "ms", simple_devprint);
278		config_found(dp, "ms", simple_devprint);
279		config_found(dp, "grfcc", simple_devprint);
280		config_found(dp, "fdc", simple_devprint);
281	}
282	if (is_a4000() || is_a1200()) {
283		config_found(dp, "wdc", simple_devprint);
284		config_found(dp, "idesc", simple_devprint);
285	}
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	if (/*is_a600() || */is_a1200())
291		config_found(dp, "pccard", simple_devprint);
292#ifdef DRACO
293	if (!is_draco())
294#endif
295		config_found(dp, "aucc", simple_devprint);
296
297	config_found(dp, "zbus", simple_devprint);
298}
299
300int
301mbprint(auxp, pnp)
302	void *auxp;
303	const char *pnp;
304{
305	if (pnp)
306		printf("%s at %s", (char *)auxp, pnp);
307	return(UNCONF);
308}
309
310/*
311 * The system will assign the "booted device" indicator (and thus
312 * rootdev if rootspec is wildcarded) to the first partition 'a'
313 * in preference of boot.  However, it does walk unit backwards
314 * to remain compatible with the old Amiga method of picking the
315 * last root found.
316 */
317#include <sys/fcntl.h>		/* XXXX and all that uses it */
318#include <sys/proc.h>		/* XXXX and all that uses it */
319
320#include "fd.h"
321#include "sd.h"
322#include "cd.h"
323#include "wd.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#if NWD > 0
335extern  struct cfdriver wd_cd;
336#endif
337
338struct cfdriver *genericconf[] = {
339#if NFD > 0
340	&fd_cd,
341#endif
342#if NSD > 0
343	&sd_cd,
344#endif
345#if NWD > 0
346	&wd_cd,
347#endif
348#if NCD > 0
349	&cd_cd,
350#endif
351	NULL,
352};
353
354void
355findroot(devpp, partp)
356	struct device **devpp;
357	int *partp;
358{
359	struct disk *dkp;
360	struct partition *pp;
361	struct device **devs;
362	int i, maj, unit;
363
364	/*
365	 * Default to "not found".
366	 */
367	*devpp = NULL;
368
369	/* always partition 'a' */
370	*partp = 0;
371
372#if NSD > 0
373	/*
374	 * If we have the boot partition offset (boot_partition), try
375	 * to locate the device corresponding to that partition.
376	 */
377#ifdef DEBUG_KERNEL_START
378	printf("Boot partition offset is %ld\n", boot_partition);
379#endif
380	if (boot_partition != 0) {
381	 	struct bdevsw *bdp;
382		int i;
383
384		for (unit = 0; unit < sd_cd.cd_ndevs; ++unit) {
385#ifdef DEBUG_KERNEL_START
386			printf("probing for sd%d\n", unit);
387#endif
388			if (sd_cd.cd_devs[unit] == NULL)
389				continue;
390
391			/*
392			 * Find the disk corresponding to the current
393			 * device.
394			 */
395			devs = (struct device **)sd_cd.cd_devs;
396			if ((dkp = disk_find(devs[unit]->dv_xname)) == NULL)
397				continue;
398
399			if (dkp->dk_driver == NULL ||
400			    dkp->dk_driver->d_strategy == NULL)
401				continue;
402			for (bdp = bdevsw; bdp < (bdevsw + nblkdev); bdp++)
403				if (bdp->d_strategy ==
404				    dkp->dk_driver->d_strategy)
405					break;
406			if (bdp->d_open(MAKEDISKDEV(4, unit, RAW_PART),
407			    FREAD | FNONBLOCK, 0, curproc))
408				continue;
409			bdp->d_close(MAKEDISKDEV(4, unit, RAW_PART),
410			    FREAD | FNONBLOCK, 0, curproc);
411			pp = &dkp->dk_label->d_partitions[0];
412			for (i = 0; i < dkp->dk_label->d_npartitions;
413			    i++, pp++) {
414#ifdef DEBUG_KERNEL_START
415				printf("sd%d%c type %d offset %d size %d\n",
416					unit, i+'a', pp->p_fstype,
417					pp->p_offset, pp->p_size);
418#endif
419				if (pp->p_size == 0 ||
420				    (pp->p_fstype != FS_BSDFFS &&
421				    pp->p_fstype != FS_SWAP))
422					continue;
423				if (pp->p_offset == boot_partition) {
424					if (*devpp == NULL) {
425						*devpp = devs[unit];
426						*partp = i;
427					} else
428						printf("Ambiguous boot device\n");
429				}
430			}
431		}
432	}
433	if (*devpp != NULL)
434		return;		/* we found the boot device */
435#endif
436
437	for (i = 0; genericconf[i] != NULL; i++) {
438		for (unit = genericconf[i]->cd_ndevs - 1; unit >= 0; unit--) {
439			if (genericconf[i]->cd_devs[unit] == NULL)
440				continue;
441
442			/*
443			 * Find the disk structure corresponding to the
444			 * current device.
445			 */
446			devs = (struct device **)genericconf[i]->cd_devs;
447			if ((dkp = disk_find(devs[unit]->dv_xname)) == NULL)
448				continue;
449
450			if (dkp->dk_driver == NULL ||
451			    dkp->dk_driver->d_strategy == NULL)
452				continue;
453
454			for (maj = 0; maj < nblkdev; maj++)
455				if (bdevsw[maj].d_strategy ==
456				    dkp->dk_driver->d_strategy)
457					break;
458#ifdef DIAGNOSTIC
459			if (maj >= nblkdev)
460				panic("findroot: impossible");
461#endif
462
463			/* Open disk; forces read of disklabel. */
464			if ((*bdevsw[maj].d_open)(MAKEDISKDEV(maj,
465			    unit, 0), FREAD|FNONBLOCK, 0, &proc0))
466				continue;
467			(void)(*bdevsw[maj].d_close)(MAKEDISKDEV(maj,
468			    unit, 0), FREAD|FNONBLOCK, 0, &proc0);
469
470			pp = &dkp->dk_label->d_partitions[0];
471			if (pp->p_size != 0 && pp->p_fstype == FS_BSDFFS) {
472				*devpp = devs[unit];
473				*partp = 0;
474				return;
475			}
476		}
477	}
478}
479
480/*
481 * Try to determine, of this machine is an A3000, which has a builtin
482 * realtime clock and scsi controller, so that this hardware is only
483 * included as "configured" if this IS an A3000
484 */
485
486int a3000_flag = 1;		/* patchable */
487#ifdef A4000
488int a4000_flag = 1;		/* patchable - default to A4000 */
489#else
490int a4000_flag = 0;		/* patchable */
491#endif
492
493int
494is_a3000()
495{
496	/* this is a dirty kludge.. but how do you do this RIGHT ? :-) */
497	extern long boot_fphystart;
498	short sc;
499
500	if ((machineid >> 16) == 3000)
501		return (1);			/* It's an A3000 */
502	if (machineid >> 16)
503		return (0);			/* It's not an A3000 */
504	/* Machine type is unknown, so try to guess it */
505	/* where is fastram on the A4000 ?? */
506	/* if fastram is below 0x07000000, assume it's not an A3000 */
507	if (boot_fphystart < 0x07000000)
508		return(0);
509	/*
510	 * OK, fastram starts at or above 0x07000000, check specific
511	 * machines
512	 */
513	for (sc = 0; sc < ncfdev; sc++) {
514		switch (cfdev[sc].rom.manid) {
515		case 2026:		/* Progressive Peripherals, Inc */
516			switch (cfdev[sc].rom.prodid) {
517			case 0:		/* PPI Mercury - A3000 */
518			case 1:		/* PP&S A3000 '040 */
519				return(1);
520			case 150:	/* PPI Zeus - it's an A2000 */
521			case 105:	/* PP&S A2000 '040 */
522			case 187:	/* PP&S A500 '040 */
523				return(0);
524			}
525			break;
526
527		case 2112:			/* IVS */
528			switch (cfdev[sc].rom.prodid) {
529			case 242:
530				return(0);	/* A2000 accelerator? */
531			}
532			break;
533		}
534	}
535	return (a3000_flag);		/* XXX let flag tell now */
536}
537
538int
539is_a4000()
540{
541	if ((machineid >> 16) == 4000)
542		return (1);		/* It's an A4000 */
543	if ((machineid >> 16) == 1200)
544		return (0);		/* It's an A1200, so not A4000 */
545#ifdef DRACO
546	if (is_draco())
547		return (0);
548#endif
549	/* Do I need this any more? */
550	if ((custom.deniseid & 0xff) == 0xf8)
551		return (1);
552#ifdef DEBUG
553	if (a4000_flag)
554		printf("Denise ID = %04x\n", (unsigned short)custom.deniseid);
555#endif
556	if (machineid >> 16)
557		return (0);		/* It's not an A4000 */
558	return (a4000_flag);		/* Machine type not set */
559}
560
561int
562is_a1200()
563{
564	if ((machineid >> 16) == 1200)
565		return (1);		/* It's an A1200 */
566	return (0);			/* Machine type not set */
567}
568