autoconf.c revision 1.64 
1/*	$NetBSD: autoconf.c,v 1.64 1999/06/07 20:16:10 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
53u_long boot_partition;
54
55/*
56 * called at boot time, configure all devices on system
57 */
58void
59configure()
60{
61	int s;
62#ifdef DEBUG_KERNEL_START
63	int i;
64#endif
65
66	/*
67	 * this is the real thing baby (i.e. not console init)
68	 */
69	amiga_realconfig = 1;
70#ifdef DRACO
71	if (is_draco()) {
72		*draco_intena &= ~DRIRQ_GLOBAL;
73	} else
74#endif
75	custom.intena = INTF_INTEN;
76	s = splhigh();
77
78	if (config_rootfound("mainbus", "mainbus") == NULL)
79		panic("no mainbus found");
80
81#ifdef DEBUG_KERNEL_START
82	printf("survived autoconf, going to enable interrupts\n");
83#endif
84
85#ifdef DRACO
86	if (is_draco()) {
87		*draco_intena |= DRIRQ_GLOBAL;
88		/* softints always enabled */
89	} else
90#endif
91	{
92		custom.intena = INTF_SETCLR | INTF_INTEN;
93
94		/* also enable hardware aided software interrupts */
95		custom.intena = INTF_SETCLR | INTF_SOFTINT;
96	}
97#ifdef DEBUG_KERNEL_START
98	for (i=splhigh(); i>=s ;i-=0x100) {
99		splx(i);
100		printf("%d...", (i>>8) & 7);
101	}
102	printf("survived interrupt enable\n");
103#else
104	splx(s);
105#endif
106	cold = 0;
107#ifdef DEBUG_KERNEL_START
108	printf("survived configure...\n");
109#endif
110}
111
112void
113cpu_rootconf()
114{
115	struct device *booted_device;
116	int booted_partition;
117
118	findroot(&booted_device, &booted_partition);
119#ifdef DEBUG_KERNEL_START
120	printf("survived findroot()\n");
121#endif
122	setroot(booted_device, booted_partition);
123#ifdef DEBUG_KERNEL_START
124	printf("survived setroot()\n");
125#endif
126}
127
128/*ARGSUSED*/
129int
130simple_devprint(auxp, pnp)
131	void *auxp;
132	const char *pnp;
133{
134	return(QUIET);
135}
136
137int
138matchname(fp, sp)
139	char *fp, *sp;
140{
141	int len;
142
143	len = strlen(fp);
144	if (strlen(sp) != len)
145		return(0);
146	if (bcmp(fp, sp, len) == 0)
147		return(1);
148	return(0);
149}
150
151/*
152 * use config_search to find appropriate device, then call that device
153 * directly with NULL device variable storage.  A device can then
154 * always tell the difference betwean the real and console init
155 * by checking for NULL.
156 */
157int
158amiga_config_found(pcfp, pdp, auxp, pfn)
159	struct cfdata *pcfp;
160	struct device *pdp;
161	void *auxp;
162	cfprint_t pfn;
163{
164	struct device temp;
165	struct cfdata *cf;
166
167	if (amiga_realconfig)
168		return(config_found(pdp, auxp, pfn) != NULL);
169
170	if (pdp == NULL)
171		pdp = &temp;
172
173	pdp->dv_cfdata = pcfp;
174	if ((cf = config_search((cfmatch_t)NULL, pdp, auxp)) != NULL) {
175		cf->cf_attach->ca_attach(pdp, NULL, auxp);
176		pdp->dv_cfdata = NULL;
177		return(1);
178	}
179	pdp->dv_cfdata = NULL;
180	return(0);
181}
182
183/*
184 * this function needs to get enough configured to do a console
185 * basically this means start attaching the grfxx's that support
186 * the console. Kinda hacky but it works.
187 */
188void
189config_console()
190{
191	struct cfdata *cf;
192
193	/*
194	 * we need mainbus' cfdata.
195	 */
196	cf = config_rootsearch(NULL, "mainbus", "mainbus");
197	if (cf == NULL) {
198		panic("no mainbus");
199	}
200	/*
201	 * delay clock calibration.
202	 */
203	amiga_config_found(cf, NULL, "clock", NULL);
204
205	/*
206	 * internal grf.
207	 */
208#ifdef DRACO
209	if (!(is_draco()))
210#endif
211		amiga_config_found(cf, NULL, "grfcc", NULL);
212	/*
213	 * zbus knows when its not for real and will
214	 * only configure the appropriate hardware
215	 */
216	amiga_config_found(cf, NULL, "zbus", NULL);
217}
218
219/*
220 * mainbus driver
221 */
222struct cfattach mainbus_ca = {
223	sizeof(struct device), mbmatch, mbattach
224};
225
226int
227mbmatch(pdp, cfp, auxp)
228	struct device	*pdp;
229	struct cfdata	*cfp;
230	void		*auxp;
231{
232
233	if (cfp->cf_unit > 0)
234		return(0);
235	/*
236	 * We are always here
237	 */
238	return(1);
239}
240
241/*
242 * "find" all the things that should be there.
243 */
244void
245mbattach(pdp, dp, auxp)
246	struct device *pdp, *dp;
247	void *auxp;
248{
249	printf("\n");
250	config_found(dp, "clock", simple_devprint);
251	if (is_a3000() || is_a4000()) {
252		config_found(dp, "a34kbbc", simple_devprint);
253	} else
254#ifdef DRACO
255	if (!is_draco())
256#endif
257	{
258		config_found(dp, "a2kbbc", simple_devprint);
259	}
260#ifdef DRACO
261	if (is_draco()) {
262		config_found(dp, "drbbc", simple_devprint);
263		config_found(dp, "kbd", simple_devprint);
264		config_found(dp, "drsc", simple_devprint);
265		config_found(dp, "drsupio", simple_devprint);
266	} else
267#endif
268	{
269		config_found(dp, "ser", simple_devprint);
270		config_found(dp, "par", simple_devprint);
271		config_found(dp, "kbd", simple_devprint);
272		config_found(dp, "ms", simple_devprint);
273		config_found(dp, "ms", simple_devprint);
274		config_found(dp, "grfcc", simple_devprint);
275		config_found(dp, "fdc", simple_devprint);
276	}
277	if (is_a4000() || is_a1200())
278		config_found(dp, "idesc", simple_devprint);
279	if (is_a4000())			/* Try to configure A4000T SCSI */
280		config_found(dp, "afsc", simple_devprint);
281	if (is_a3000())
282		config_found(dp, "ahsc", simple_devprint);
283#ifdef DRACO
284	if (!is_draco())
285#endif
286		config_found(dp, "aucc", simple_devprint);
287
288	config_found(dp, "zbus", simple_devprint);
289}
290
291int
292mbprint(auxp, pnp)
293	void *auxp;
294	const char *pnp;
295{
296	if (pnp)
297		printf("%s at %s", (char *)auxp, pnp);
298	return(UNCONF);
299}
300
301/*
302 * The system will assign the "booted device" indicator (and thus
303 * rootdev if rootspec is wildcarded) to the first partition 'a'
304 * in preference of boot.  However, it does walk unit backwards
305 * to remain compatible with the old Amiga method of picking the
306 * last root found.
307 */
308#include <sys/fcntl.h>		/* XXXX and all that uses it */
309#include <sys/proc.h>		/* XXXX and all that uses it */
310
311#include "fd.h"
312#include "sd.h"
313#include "cd.h"
314
315#if NFD > 0
316extern  struct cfdriver fd_cd;
317#endif
318#if NSD > 0
319extern  struct cfdriver sd_cd;
320#endif
321#if NCD > 0
322extern  struct cfdriver cd_cd;
323#endif
324
325struct cfdriver *genericconf[] = {
326#if NFD > 0
327	&fd_cd,
328#endif
329#if NSD > 0
330	&sd_cd,
331#endif
332#if NCD > 0
333	&cd_cd,
334#endif
335	NULL,
336};
337
338void
339findroot(devpp, partp)
340	struct device **devpp;
341	int *partp;
342{
343	struct disk *dkp;
344	struct partition *pp;
345	struct device **devs;
346	int i, maj, unit;
347
348	/*
349	 * Default to "not found".
350	 */
351	*devpp = NULL;
352
353	/* always partition 'a' */
354	*partp = 0;
355
356#if NSD > 0
357	/*
358	 * If we have the boot partition offset (boot_partition), try
359	 * to locate the device corresponding to that partition.
360	 */
361#ifdef DEBUG_KERNEL_START
362	printf("Boot partition offset is %ld\n", boot_partition);
363#endif
364	if (boot_partition != 0) {
365	 	struct bdevsw *bdp;
366		int i;
367
368		for (unit = 0; unit < sd_cd.cd_ndevs; ++unit) {
369#ifdef DEBUG_KERNEL_START
370			printf("probing for sd%d\n", unit);
371#endif
372			if (sd_cd.cd_devs[unit] == NULL)
373				continue;
374
375			/*
376			 * Find the disk corresponding to the current
377			 * device.
378			 */
379			devs = (struct device **)sd_cd.cd_devs;
380			if ((dkp = disk_find(devs[unit]->dv_xname)) == NULL)
381				continue;
382
383			if (dkp->dk_driver == NULL ||
384			    dkp->dk_driver->d_strategy == NULL)
385				continue;
386			for (bdp = bdevsw; bdp < (bdevsw + nblkdev); bdp++)
387				if (bdp->d_strategy ==
388				    dkp->dk_driver->d_strategy)
389					break;
390			if (bdp->d_open(MAKEDISKDEV(4, unit, RAW_PART),
391			    FREAD | FNONBLOCK, 0, curproc))
392				continue;
393			bdp->d_close(MAKEDISKDEV(4, unit, RAW_PART),
394			    FREAD | FNONBLOCK, 0, curproc);
395			pp = &dkp->dk_label->d_partitions[0];
396			for (i = 0; i < dkp->dk_label->d_npartitions;
397			    i++, pp++) {
398#ifdef DEBUG_KERNEL_START
399				printf("sd%d%c type %d offset %d size %d\n",
400					unit, i+'a', pp->p_fstype,
401					pp->p_offset, pp->p_size);
402#endif
403				if (pp->p_size == 0 ||
404				    (pp->p_fstype != FS_BSDFFS &&
405				    pp->p_fstype != FS_SWAP))
406					continue;
407				if (pp->p_offset == boot_partition) {
408					if (*devpp == NULL) {
409						*devpp = devs[unit];
410						*partp = i;
411					} else
412						printf("Ambiguous boot device\n");
413				}
414			}
415		}
416	}
417	if (*devpp != NULL)
418		return;		/* we found the boot device */
419#endif
420
421	for (i = 0; genericconf[i] != NULL; i++) {
422		for (unit = genericconf[i]->cd_ndevs - 1; unit >= 0; unit--) {
423			if (genericconf[i]->cd_devs[unit] == NULL)
424				continue;
425
426			/*
427			 * Find the disk structure corresponding to the
428			 * current device.
429			 */
430			devs = (struct device **)genericconf[i]->cd_devs;
431			if ((dkp = disk_find(devs[unit]->dv_xname)) == NULL)
432				continue;
433
434			if (dkp->dk_driver == NULL ||
435			    dkp->dk_driver->d_strategy == NULL)
436				continue;
437
438			for (maj = 0; maj < nblkdev; maj++)
439				if (bdevsw[maj].d_strategy ==
440				    dkp->dk_driver->d_strategy)
441					break;
442#ifdef DIAGNOSTIC
443			if (maj >= nblkdev)
444				panic("findroot: impossible");
445#endif
446
447			/* Open disk; forces read of disklabel. */
448			if ((*bdevsw[maj].d_open)(MAKEDISKDEV(maj,
449			    unit, 0), FREAD|FNONBLOCK, 0, &proc0))
450				continue;
451			(void)(*bdevsw[maj].d_close)(MAKEDISKDEV(maj,
452			    unit, 0), FREAD|FNONBLOCK, 0, &proc0);
453
454			pp = &dkp->dk_label->d_partitions[0];
455			if (pp->p_size != 0 && pp->p_fstype == FS_BSDFFS) {
456				*devpp = devs[unit];
457				*partp = 0;
458				return;
459			}
460		}
461	}
462}
463
464/*
465 * Try to determine, of this machine is an A3000, which has a builtin
466 * realtime clock and scsi controller, so that this hardware is only
467 * included as "configured" if this IS an A3000
468 */
469
470int a3000_flag = 1;		/* patchable */
471#ifdef A4000
472int a4000_flag = 1;		/* patchable - default to A4000 */
473#else
474int a4000_flag = 0;		/* patchable */
475#endif
476
477int
478is_a3000()
479{
480	/* this is a dirty kludge.. but how do you do this RIGHT ? :-) */
481	extern long boot_fphystart;
482	short sc;
483
484	if ((machineid >> 16) == 3000)
485		return (1);			/* It's an A3000 */
486	if (machineid >> 16)
487		return (0);			/* It's not an A3000 */
488	/* Machine type is unknown, so try to guess it */
489	/* where is fastram on the A4000 ?? */
490	/* if fastram is below 0x07000000, assume it's not an A3000 */
491	if (boot_fphystart < 0x07000000)
492		return(0);
493	/*
494	 * OK, fastram starts at or above 0x07000000, check specific
495	 * machines
496	 */
497	for (sc = 0; sc < ncfdev; sc++) {
498		switch (cfdev[sc].rom.manid) {
499		case 2026:		/* Progressive Peripherals, Inc */
500			switch (cfdev[sc].rom.prodid) {
501			case 0:		/* PPI Mercury - A3000 */
502			case 1:		/* PP&S A3000 '040 */
503				return(1);
504			case 150:	/* PPI Zeus - it's an A2000 */
505			case 105:	/* PP&S A2000 '040 */
506			case 187:	/* PP&S A500 '040 */
507				return(0);
508			}
509			break;
510
511		case 2112:			/* IVS */
512			switch (cfdev[sc].rom.prodid) {
513			case 242:
514				return(0);	/* A2000 accelerator? */
515			}
516			break;
517		}
518	}
519	return (a3000_flag);		/* XXX let flag tell now */
520}
521
522int
523is_a4000()
524{
525	if ((machineid >> 16) == 4000)
526		return (1);		/* It's an A4000 */
527	if ((machineid >> 16) == 1200)
528		return (0);		/* It's an A1200, so not A4000 */
529#ifdef DRACO
530	if (is_draco())
531		return (0);
532#endif
533	/* Do I need this any more? */
534	if ((custom.deniseid & 0xff) == 0xf8)
535		return (1);
536#ifdef DEBUG
537	if (a4000_flag)
538		printf("Denise ID = %04x\n", (unsigned short)custom.deniseid);
539#endif
540	if (machineid >> 16)
541		return (0);		/* It's not an A4000 */
542	return (a4000_flag);		/* Machine type not set */
543}
544
545int
546is_a1200()
547{
548	if ((machineid >> 16) == 1200)
549		return (1);		/* It's an A1200 */
550	return (0);			/* Machine type not set */
551}
552