autoconf.c revision 1.79 
1/*	$NetBSD: autoconf.c,v 1.79 2002/01/26 13:24:53 aymeric 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
45static void findroot(void);
46void mbattach(struct device *, struct device *, void *);
47int mbprint(void *, const char *);
48int mbmatch(struct device *, struct cfdata *, void *);
49
50#include <sys/kernel.h>
51
52u_long boot_partition;
53struct device *booted_device;
54int booted_partition;
55
56/*
57 * called at boot time, configure all devices on system
58 */
59void
60cpu_configure()
61{
62	int s;
63#ifdef DEBUG_KERNEL_START
64	int i;
65#endif
66
67	/*
68	 * this is the real thing baby (i.e. not console init)
69	 */
70	amiga_realconfig = 1;
71#ifdef DRACO
72	if (is_draco()) {
73		*draco_intena &= ~DRIRQ_GLOBAL;
74	} else
75#endif
76	custom.intena = INTF_INTEN;
77	s = splhigh();
78
79	if (config_rootfound("mainbus", "mainbus") == NULL)
80		panic("no mainbus found");
81
82#ifdef DEBUG_KERNEL_START
83	printf("survived autoconf, going to enable interrupts\n");
84#endif
85
86#ifdef DRACO
87	if (is_draco()) {
88		*draco_intena |= DRIRQ_GLOBAL;
89		/* softints always enabled */
90	} else
91#endif
92	{
93		custom.intena = INTF_SETCLR | INTF_INTEN;
94
95		/* also enable hardware aided software interrupts */
96		custom.intena = INTF_SETCLR | INTF_SOFTINT;
97	}
98#ifdef DEBUG_KERNEL_START
99	for (i=splhigh(); i>=s ;i-=0x100) {
100		splx(i);
101		printf("%d...", (i>>8) & 7);
102	}
103	printf("survived interrupt enable\n");
104#else
105	splx(s);
106#endif
107#ifdef DEBUG_KERNEL_START
108	printf("survived configure...\n");
109#endif
110}
111
112void
113cpu_rootconf()
114{
115	findroot();
116#ifdef DEBUG_KERNEL_START
117	printf("survived findroot()\n");
118#endif
119	setroot(booted_device, booted_partition);
120#ifdef DEBUG_KERNEL_START
121	printf("survived setroot()\n");
122#endif
123}
124
125/*ARGSUSED*/
126int
127simple_devprint(auxp, pnp)
128	void *auxp;
129	const char *pnp;
130{
131	return(QUIET);
132}
133
134int
135matchname(fp, sp)
136	char *fp, *sp;
137{
138	int len;
139
140	len = strlen(fp);
141	if (strlen(sp) != len)
142		return(0);
143	if (bcmp(fp, sp, len) == 0)
144		return(1);
145	return(0);
146}
147
148/*
149 * use config_search to find appropriate device, then call that device
150 * directly with NULL device variable storage.  A device can then
151 * always tell the difference betwean the real and console init
152 * by checking for NULL.
153 */
154int
155amiga_config_found(pcfp, pdp, auxp, pfn)
156	struct cfdata *pcfp;
157	struct device *pdp;
158	void *auxp;
159	cfprint_t pfn;
160{
161	struct device temp;
162	struct cfdata *cf;
163
164	if (amiga_realconfig)
165		return(config_found(pdp, auxp, pfn) != NULL);
166
167	if (pdp == NULL)
168		pdp = &temp;
169
170	pdp->dv_cfdata = pcfp;
171	if ((cf = config_search((cfmatch_t)NULL, pdp, auxp)) != NULL) {
172		cf->cf_attach->ca_attach(pdp, NULL, auxp);
173		pdp->dv_cfdata = NULL;
174		return(1);
175	}
176	pdp->dv_cfdata = NULL;
177	return(0);
178}
179
180/*
181 * this function needs to get enough configured to do a console
182 * basically this means start attaching the grfxx's that support
183 * the console. Kinda hacky but it works.
184 */
185void
186config_console()
187{
188	struct cfdata *cf;
189
190	/*
191	 * we need mainbus' cfdata.
192	 */
193	cf = config_rootsearch(NULL, "mainbus", "mainbus");
194	if (cf == NULL) {
195		panic("no mainbus");
196	}
197	/*
198	 * delay clock calibration.
199	 */
200	amiga_config_found(cf, NULL, "clock", NULL);
201
202	/*
203	 * internal grf.
204	 */
205#ifdef DRACO
206	if (!(is_draco()))
207#endif
208		amiga_config_found(cf, NULL, "grfcc", NULL);
209
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
224int
225mbmatch(pdp, cfp, auxp)
226	struct device	*pdp;
227	struct cfdata	*cfp;
228	void		*auxp;
229{
230#if 0	/*
231	 * XXX is this right? but we need to be found twice
232	 * (early console init hack)
233	 */
234	static int mainbus_matched = 0;
235
236	/* Allow only one instance. */
237	if (mainbus_matched)
238		return (0);
239
240	mainbus_matched = 1;
241#endif
242	return (1);
243}
244
245/*
246 * "find" all the things that should be there.
247 */
248void
249mbattach(pdp, dp, auxp)
250	struct device *pdp, *dp;
251	void *auxp;
252{
253	printf("\n");
254	config_found(dp, "clock", simple_devprint);
255	if (is_a3000() || is_a4000()) {
256		config_found(dp, "a34kbbc", simple_devprint);
257	} else
258#ifdef DRACO
259	if (!is_draco())
260#endif
261	{
262		config_found(dp, "a2kbbc", simple_devprint);
263	}
264#ifdef DRACO
265	if (is_draco()) {
266		config_found(dp, "drbbc", simple_devprint);
267		config_found(dp, "kbd", simple_devprint);
268		config_found(dp, "drsc", simple_devprint);
269		config_found(dp, "drsupio", simple_devprint);
270	} else
271#endif
272	{
273		config_found(dp, "ser", simple_devprint);
274		config_found(dp, "par", simple_devprint);
275		config_found(dp, "kbd", simple_devprint);
276		config_found(dp, "ms", simple_devprint);
277		config_found(dp, "grfcc", simple_devprint);
278		config_found(dp, "amidisplaycc", simple_devprint);
279		config_found(dp, "fdc", simple_devprint);
280	}
281	if (is_a4000() || is_a1200()) {
282		config_found(dp, "wdc", simple_devprint);
283		config_found(dp, "idesc", simple_devprint);
284	}
285	if (is_a4000())			/* Try to configure A4000T SCSI */
286		config_found(dp, "afsc", simple_devprint);
287	if (is_a3000())
288		config_found(dp, "ahsc", simple_devprint);
289	if (/*is_a600() || */is_a1200())
290		config_found(dp, "pccard", simple_devprint);
291#ifdef DRACO
292	if (!is_draco())
293#endif
294		config_found(dp, "aucc", simple_devprint);
295
296	config_found(dp, "zbus", simple_devprint);
297}
298
299int
300mbprint(auxp, pnp)
301	void *auxp;
302	const char *pnp;
303{
304	if (pnp)
305		printf("%s at %s", (char *)auxp, pnp);
306	return(UNCONF);
307}
308
309/*
310 * The system will assign the "booted device" indicator (and thus
311 * rootdev if rootspec is wildcarded) to the first partition 'a'
312 * in preference of boot.  However, it does walk unit backwards
313 * to remain compatible with the old Amiga method of picking the
314 * last root found.
315 */
316#include <sys/fcntl.h>		/* XXXX and all that uses it */
317#include <sys/proc.h>		/* XXXX and all that uses it */
318
319#include "fd.h"
320#include "sd.h"
321#include "cd.h"
322#include "wd.h"
323
324#if NFD > 0
325extern  struct cfdriver fd_cd;
326#endif
327#if NSD > 0
328extern  struct cfdriver sd_cd;
329#endif
330#if NCD > 0
331extern  struct cfdriver cd_cd;
332#endif
333#if NWD > 0
334extern  struct cfdriver wd_cd;
335#endif
336
337struct cfdriver *genericconf[] = {
338#if NFD > 0
339	&fd_cd,
340#endif
341#if NSD > 0
342	&sd_cd,
343#endif
344#if NWD > 0
345	&wd_cd,
346#endif
347#if NCD > 0
348	&cd_cd,
349#endif
350	NULL,
351};
352
353void
354findroot(void)
355{
356	struct disk *dkp;
357	struct partition *pp;
358	struct device **devs;
359	int i, maj, unit;
360
361#if NSD > 0
362	/*
363	 * If we have the boot partition offset (boot_partition), try
364	 * to locate the device corresponding to that partition.
365	 */
366#ifdef DEBUG_KERNEL_START
367	printf("Boot partition offset is %ld\n", boot_partition);
368#endif
369	if (boot_partition != 0) {
370	 	struct bdevsw *bdp;
371		int i;
372
373		for (unit = 0; unit < sd_cd.cd_ndevs; ++unit) {
374#ifdef DEBUG_KERNEL_START
375			printf("probing for sd%d\n", unit);
376#endif
377			if (sd_cd.cd_devs[unit] == NULL)
378				continue;
379
380			/*
381			 * Find the disk corresponding to the current
382			 * device.
383			 */
384			devs = (struct device **)sd_cd.cd_devs;
385			if ((dkp = disk_find(devs[unit]->dv_xname)) == NULL)
386				continue;
387
388			if (dkp->dk_driver == NULL ||
389			    dkp->dk_driver->d_strategy == NULL)
390				continue;
391			for (bdp = bdevsw; bdp < (bdevsw + nblkdev); bdp++)
392				if (bdp->d_strategy ==
393				    dkp->dk_driver->d_strategy)
394					break;
395			if (bdp->d_open(MAKEDISKDEV(4, unit, RAW_PART),
396			    FREAD | FNONBLOCK, 0, curproc))
397				continue;
398			bdp->d_close(MAKEDISKDEV(4, unit, RAW_PART),
399			    FREAD | FNONBLOCK, 0, curproc);
400			pp = &dkp->dk_label->d_partitions[0];
401			for (i = 0; i < dkp->dk_label->d_npartitions;
402			    i++, pp++) {
403#ifdef DEBUG_KERNEL_START
404				printf("sd%d%c type %d offset %d size %d\n",
405					unit, i+'a', pp->p_fstype,
406					pp->p_offset, pp->p_size);
407#endif
408				if (pp->p_size == 0 ||
409				    (pp->p_fstype != FS_BSDFFS &&
410				    pp->p_fstype != FS_SWAP))
411					continue;
412				if (pp->p_offset == boot_partition) {
413					if (booted_device == NULL) {
414						booted_device = devs[unit];
415						booted_partition = i;
416					} else
417						printf("Ambiguous boot device\n");
418				}
419			}
420		}
421	}
422	if (booted_device != NULL)
423		return;		/* we found the boot device */
424#endif
425
426	for (i = 0; genericconf[i] != NULL; i++) {
427		for (unit = genericconf[i]->cd_ndevs - 1; unit >= 0; unit--) {
428			if (genericconf[i]->cd_devs[unit] == NULL)
429				continue;
430
431			/*
432			 * Find the disk structure corresponding to the
433			 * current device.
434			 */
435			devs = (struct device **)genericconf[i]->cd_devs;
436			if ((dkp = disk_find(devs[unit]->dv_xname)) == NULL)
437				continue;
438
439			if (dkp->dk_driver == NULL ||
440			    dkp->dk_driver->d_strategy == NULL)
441				continue;
442
443			for (maj = 0; maj < nblkdev; maj++)
444				if (bdevsw[maj].d_strategy ==
445				    dkp->dk_driver->d_strategy)
446					break;
447#ifdef DIAGNOSTIC
448			if (maj >= nblkdev)
449				panic("findroot: impossible");
450#endif
451
452			/* Open disk; forces read of disklabel. */
453			if ((*bdevsw[maj].d_open)(MAKEDISKDEV(maj,
454			    unit, 0), FREAD|FNONBLOCK, 0, &proc0))
455				continue;
456			(void)(*bdevsw[maj].d_close)(MAKEDISKDEV(maj,
457			    unit, 0), FREAD|FNONBLOCK, 0, &proc0);
458
459			pp = &dkp->dk_label->d_partitions[0];
460			if (pp->p_size != 0 && pp->p_fstype == FS_BSDFFS) {
461				booted_device = devs[unit];
462				booted_partition = 0;
463				return;
464			}
465		}
466	}
467}
468
469/*
470 * Try to determine, of this machine is an A3000, which has a builtin
471 * realtime clock and scsi controller, so that this hardware is only
472 * included as "configured" if this IS an A3000
473 */
474
475int a3000_flag = 1;		/* patchable */
476#ifdef A4000
477int a4000_flag = 1;		/* patchable - default to A4000 */
478#else
479int a4000_flag = 0;		/* patchable */
480#endif
481
482int
483is_a3000()
484{
485	/* this is a dirty kludge.. but how do you do this RIGHT ? :-) */
486	extern long boot_fphystart;
487	short sc;
488
489	if ((machineid >> 16) == 3000)
490		return (1);			/* It's an A3000 */
491	if (machineid >> 16)
492		return (0);			/* It's not an A3000 */
493	/* Machine type is unknown, so try to guess it */
494	/* where is fastram on the A4000 ?? */
495	/* if fastram is below 0x07000000, assume it's not an A3000 */
496	if (boot_fphystart < 0x07000000)
497		return(0);
498	/*
499	 * OK, fastram starts at or above 0x07000000, check specific
500	 * machines
501	 */
502	for (sc = 0; sc < ncfdev; sc++) {
503		switch (cfdev[sc].rom.manid) {
504		case 2026:		/* Progressive Peripherals, Inc */
505			switch (cfdev[sc].rom.prodid) {
506			case 0:		/* PPI Mercury - A3000 */
507			case 1:		/* PP&S A3000 '040 */
508				return(1);
509			case 150:	/* PPI Zeus - it's an A2000 */
510			case 105:	/* PP&S A2000 '040 */
511			case 187:	/* PP&S A500 '040 */
512				return(0);
513			}
514			break;
515
516		case 2112:			/* IVS */
517			switch (cfdev[sc].rom.prodid) {
518			case 242:
519				return(0);	/* A2000 accelerator? */
520			}
521			break;
522		}
523	}
524	return (a3000_flag);		/* XXX let flag tell now */
525}
526
527int
528is_a4000()
529{
530	if ((machineid >> 16) == 4000)
531		return (1);		/* It's an A4000 */
532	if ((machineid >> 16) == 1200)
533		return (0);		/* It's an A1200, so not A4000 */
534#ifdef DRACO
535	if (is_draco())
536		return (0);
537#endif
538	/* Do I need this any more? */
539	if ((custom.deniseid & 0xff) == 0xf8)
540		return (1);
541#ifdef DEBUG
542	if (a4000_flag)
543		printf("Denise ID = %04x\n", (unsigned short)custom.deniseid);
544#endif
545	if (machineid >> 16)
546		return (0);		/* It's not an A4000 */
547	return (a4000_flag);		/* Machine type not set */
548}
549
550int
551is_a1200()
552{
553	if ((machineid >> 16) == 1200)
554		return (1);		/* It's an A1200 */
555	return (0);			/* Machine type not set */
556}
557