autoconf.c revision 1.83 
1/*	$NetBSD: autoconf.c,v 1.83 2002/09/27 20:29:42 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
33#include <sys/cdefs.h>
34__KERNEL_RCSID(0, "$NetBSD: autoconf.c,v 1.83 2002/09/27 20:29:42 thorpej Exp $");
35
36#include <sys/param.h>
37#include <sys/systm.h>
38#include <sys/reboot.h>
39#include <sys/conf.h>
40#include <sys/buf.h>
41#include <sys/device.h>
42#include <sys/disklabel.h>
43#include <sys/disk.h>
44#include <machine/cpu.h>
45#include <amiga/amiga/cfdev.h>
46#include <amiga/amiga/device.h>
47#include <amiga/amiga/custom.h>
48
49static void findroot(void);
50void mbattach(struct device *, struct device *, void *);
51int mbprint(void *, const char *);
52int mbmatch(struct device *, struct cfdata *, void *);
53
54#include <sys/kernel.h>
55
56u_long boot_partition;
57struct device *booted_device;
58int booted_partition;
59
60int amiga_realconfig;
61
62/*
63 * called at boot time, configure all devices on system
64 */
65void
66cpu_configure()
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#ifdef DEBUG_KERNEL_START
114	printf("survived configure...\n");
115#endif
116}
117
118void
119cpu_rootconf()
120{
121	findroot();
122#ifdef DEBUG_KERNEL_START
123	printf("survived findroot()\n");
124#endif
125	setroot(booted_device, booted_partition);
126#ifdef DEBUG_KERNEL_START
127	printf("survived setroot()\n");
128#endif
129}
130
131/*ARGSUSED*/
132int
133simple_devprint(auxp, pnp)
134	void *auxp;
135	const char *pnp;
136{
137	return(QUIET);
138}
139
140int
141matchname(fp, sp)
142	char *fp, *sp;
143{
144	int len;
145
146	len = strlen(fp);
147	if (strlen(sp) != len)
148		return(0);
149	if (bcmp(fp, sp, len) == 0)
150		return(1);
151	return(0);
152}
153
154/*
155 * use config_search to find appropriate device, then call that device
156 * directly with NULL device variable storage.  A device can then
157 * always tell the difference betwean the real and console init
158 * by checking for NULL.
159 */
160int
161amiga_config_found(pcfp, pdp, auxp, pfn)
162	struct cfdata *pcfp;
163	struct device *pdp;
164	void *auxp;
165	cfprint_t pfn;
166{
167	struct device temp;
168	struct cfdata *cf;
169
170	if (amiga_realconfig)
171		return(config_found(pdp, auxp, pfn) != NULL);
172
173	if (pdp == NULL)
174		pdp = &temp;
175
176	pdp->dv_cfdata = pcfp;
177	if ((cf = config_search((cfmatch_t)NULL, pdp, auxp)) != NULL) {
178		cf->cf_attach->ca_attach(pdp, NULL, auxp);
179		pdp->dv_cfdata = NULL;
180		return(1);
181	}
182	pdp->dv_cfdata = NULL;
183	return(0);
184}
185
186/*
187 * this function needs to get enough configured to do a console
188 * basically this means start attaching the grfxx's that support
189 * the console. Kinda hacky but it works.
190 */
191void
192config_console()
193{
194	struct cfdata *cf;
195
196	/*
197	 * we need mainbus' cfdata.
198	 */
199	cf = config_rootsearch(NULL, "mainbus", "mainbus");
200	if (cf == NULL) {
201		panic("no mainbus");
202	}
203	/*
204	 * delay clock calibration.
205	 */
206	amiga_config_found(cf, NULL, "clock", NULL);
207
208	/*
209	 * internal grf.
210	 */
211#ifdef DRACO
212	if (!(is_draco()))
213#endif
214		amiga_config_found(cf, NULL, "grfcc", NULL);
215
216	/*
217	 * zbus knows when its not for real and will
218	 * only configure the appropriate hardware
219	 */
220	amiga_config_found(cf, NULL, "zbus", NULL);
221}
222
223/*
224 * mainbus driver
225 */
226const struct cfattach mainbus_ca = {
227	sizeof(struct device), mbmatch, mbattach
228};
229
230int
231mbmatch(pdp, cfp, auxp)
232	struct device	*pdp;
233	struct cfdata	*cfp;
234	void		*auxp;
235{
236#if 0	/*
237	 * XXX is this right? but we need to be found twice
238	 * (early console init hack)
239	 */
240	static int mainbus_matched = 0;
241
242	/* Allow only one instance. */
243	if (mainbus_matched)
244		return (0);
245
246	mainbus_matched = 1;
247#endif
248	return (1);
249}
250
251/*
252 * "find" all the things that should be there.
253 */
254void
255mbattach(pdp, dp, auxp)
256	struct device *pdp, *dp;
257	void *auxp;
258{
259	printf("\n");
260	config_found(dp, "clock", simple_devprint);
261	if (is_a3000() || is_a4000()) {
262		config_found(dp, "a34kbbc", simple_devprint);
263	} else
264#ifdef DRACO
265	if (!is_draco())
266#endif
267	{
268		config_found(dp, "a2kbbc", simple_devprint);
269	}
270#ifdef DRACO
271	if (is_draco()) {
272		config_found(dp, "drbbc", simple_devprint);
273		config_found(dp, "kbd", simple_devprint);
274		config_found(dp, "drsc", simple_devprint);
275		config_found(dp, "drsupio", simple_devprint);
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, "grfcc", simple_devprint);
284		config_found(dp, "amidisplaycc", simple_devprint);
285		config_found(dp, "fdc", simple_devprint);
286	}
287	if (is_a4000() || is_a1200()) {
288		config_found(dp, "wdc", simple_devprint);
289		config_found(dp, "idesc", simple_devprint);
290	}
291	if (is_a4000())			/* Try to configure A4000T SCSI */
292		config_found(dp, "afsc", simple_devprint);
293	if (is_a3000())
294		config_found(dp, "ahsc", simple_devprint);
295	if (/*is_a600() || */is_a1200())
296		config_found(dp, "pccard", simple_devprint);
297#ifdef DRACO
298	if (!is_draco())
299#endif
300		config_found(dp, "aucc", simple_devprint);
301
302	config_found(dp, "zbus", simple_devprint);
303}
304
305int
306mbprint(auxp, pnp)
307	void *auxp;
308	const char *pnp;
309{
310	if (pnp)
311		printf("%s at %s", (char *)auxp, pnp);
312	return(UNCONF);
313}
314
315/*
316 * The system will assign the "booted device" indicator (and thus
317 * rootdev if rootspec is wildcarded) to the first partition 'a'
318 * in preference of boot.  However, it does walk unit backwards
319 * to remain compatible with the old Amiga method of picking the
320 * last root found.
321 */
322#include <sys/fcntl.h>		/* XXXX and all that uses it */
323#include <sys/proc.h>		/* XXXX and all that uses it */
324
325#include "fd.h"
326#include "sd.h"
327#include "cd.h"
328#include "wd.h"
329
330#if NFD > 0
331extern  struct cfdriver fd_cd;
332extern	const struct bdevsw fd_bdevsw;
333#endif
334#if NSD > 0
335extern  struct cfdriver sd_cd;
336extern	const struct bdevsw sd_bdevsw;
337#endif
338#if NCD > 0
339extern  struct cfdriver cd_cd;
340extern	const struct bdevsw cd_bdevsw;
341#endif
342#if NWD > 0
343extern  struct cfdriver wd_cd;
344extern	const struct bdevsw wd_bdevsw;
345#endif
346
347struct cfdriver *genericconf[] = {
348#if NFD > 0
349	&fd_cd,
350#endif
351#if NSD > 0
352	&sd_cd,
353#endif
354#if NWD > 0
355	&wd_cd,
356#endif
357#if NCD > 0
358	&cd_cd,
359#endif
360	NULL,
361};
362
363void
364findroot(void)
365{
366	struct disk *dkp;
367	struct partition *pp;
368	struct device **devs;
369	int i, maj, unit;
370	const struct bdevsw *bdp;
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		int i;
382
383		for (unit = 0; unit < sd_cd.cd_ndevs; ++unit) {
384#ifdef DEBUG_KERNEL_START
385			printf("probing for sd%d\n", unit);
386#endif
387			if (sd_cd.cd_devs[unit] == NULL)
388				continue;
389
390			/*
391			 * Find the disk corresponding to the current
392			 * device.
393			 */
394			devs = (struct device **)sd_cd.cd_devs;
395			if ((dkp = disk_find(devs[unit]->dv_xname)) == NULL)
396				continue;
397
398			if (dkp->dk_driver == NULL ||
399			    dkp->dk_driver->d_strategy == NULL)
400				continue;
401			bdp = &sd_bdevsw;
402			maj = bdevsw_lookup_major(bdp);
403			if ((*bdp->d_open)(MAKEDISKDEV(maj, unit, RAW_PART),
404			    FREAD | FNONBLOCK, 0, curproc))
405				continue;
406			(*bdp->d_close)(MAKEDISKDEV(maj, unit, RAW_PART),
407			    FREAD | FNONBLOCK, 0, curproc);
408			pp = &dkp->dk_label->d_partitions[0];
409			for (i = 0; i < dkp->dk_label->d_npartitions;
410			    i++, pp++) {
411#ifdef DEBUG_KERNEL_START
412				printf("sd%d%c type %d offset %d size %d\n",
413					unit, i+'a', pp->p_fstype,
414					pp->p_offset, pp->p_size);
415#endif
416				if (pp->p_size == 0 ||
417				    (pp->p_fstype != FS_BSDFFS &&
418				    pp->p_fstype != FS_SWAP))
419					continue;
420				if (pp->p_offset == boot_partition) {
421					if (booted_device == NULL) {
422						booted_device = devs[unit];
423						booted_partition = i;
424					} else
425						printf("Ambiguous boot device\n");
426				}
427			}
428		}
429	}
430	if (booted_device != NULL)
431		return;		/* we found the boot device */
432#endif
433
434	for (i = 0; genericconf[i] != NULL; i++) {
435		for (unit = genericconf[i]->cd_ndevs - 1; unit >= 0; unit--) {
436			if (genericconf[i]->cd_devs[unit] == NULL)
437				continue;
438
439			/*
440			 * Find the disk structure corresponding to the
441			 * current device.
442			 */
443			devs = (struct device **)genericconf[i]->cd_devs;
444			if ((dkp = disk_find(devs[unit]->dv_xname)) == NULL)
445				continue;
446
447			if (dkp->dk_driver == NULL ||
448			    dkp->dk_driver->d_strategy == NULL)
449				continue;
450
451#if NFD > 0
452			if (fd_bdevsw.d_strategy == dkp->dk_driver->d_strategy)
453				bdp = &fd_bdevsw;
454#endif
455#if NSD > 0
456			if (sd_bdevsw.d_strategy == dkp->dk_driver->d_strategy)
457				bdp = &sd_bdevsw;
458#endif
459#if NWD > 0
460			if (wd_bdevsw.d_strategy == dkp->dk_driver->d_strategy)
461				bdp = &wd_bdevsw;
462#endif
463#if NCD > 0
464			if (cd_bdevsw.d_strategy == dkp->dk_driver->d_strategy)
465				bdp = &cd_bdevsw;
466#endif
467#ifdef DIAGNOSTIC
468			if (bdp == NULL)
469				panic("findroot: impossible");
470#endif
471			maj = bdevsw_lookup_major(bdp);
472
473			/* Open disk; forces read of disklabel. */
474			if ((*bdp->d_open)(MAKEDISKDEV(maj,
475			    unit, 0), FREAD|FNONBLOCK, 0, &proc0))
476				continue;
477			(void)(*bdp->d_close)(MAKEDISKDEV(maj,
478			    unit, 0), FREAD|FNONBLOCK, 0, &proc0);
479
480			pp = &dkp->dk_label->d_partitions[0];
481			if (pp->p_size != 0 && pp->p_fstype == FS_BSDFFS) {
482				booted_device = devs[unit];
483				booted_partition = 0;
484				return;
485			}
486		}
487	}
488}
489
490/*
491 * Try to determine, of this machine is an A3000, which has a builtin
492 * realtime clock and scsi controller, so that this hardware is only
493 * included as "configured" if this IS an A3000
494 */
495
496int a3000_flag = 1;		/* patchable */
497#ifdef A4000
498int a4000_flag = 1;		/* patchable - default to A4000 */
499#else
500int a4000_flag = 0;		/* patchable */
501#endif
502
503int
504is_a3000()
505{
506	/* this is a dirty kludge.. but how do you do this RIGHT ? :-) */
507	extern long boot_fphystart;
508	short sc;
509
510	if ((machineid >> 16) == 3000)
511		return (1);			/* It's an A3000 */
512	if (machineid >> 16)
513		return (0);			/* It's not an A3000 */
514	/* Machine type is unknown, so try to guess it */
515	/* where is fastram on the A4000 ?? */
516	/* if fastram is below 0x07000000, assume it's not an A3000 */
517	if (boot_fphystart < 0x07000000)
518		return(0);
519	/*
520	 * OK, fastram starts at or above 0x07000000, check specific
521	 * machines
522	 */
523	for (sc = 0; sc < ncfdev; sc++) {
524		switch (cfdev[sc].rom.manid) {
525		case 2026:		/* Progressive Peripherals, Inc */
526			switch (cfdev[sc].rom.prodid) {
527			case 0:		/* PPI Mercury - A3000 */
528			case 1:		/* PP&S A3000 '040 */
529				return(1);
530			case 150:	/* PPI Zeus - it's an A2000 */
531			case 105:	/* PP&S A2000 '040 */
532			case 187:	/* PP&S A500 '040 */
533				return(0);
534			}
535			break;
536
537		case 2112:			/* IVS */
538			switch (cfdev[sc].rom.prodid) {
539			case 242:
540				return(0);	/* A2000 accelerator? */
541			}
542			break;
543		}
544	}
545	return (a3000_flag);		/* XXX let flag tell now */
546}
547
548int
549is_a4000()
550{
551	if ((machineid >> 16) == 4000)
552		return (1);		/* It's an A4000 */
553	if ((machineid >> 16) == 1200)
554		return (0);		/* It's an A1200, so not A4000 */
555#ifdef DRACO
556	if (is_draco())
557		return (0);
558#endif
559	/* Do I need this any more? */
560	if ((custom.deniseid & 0xff) == 0xf8)
561		return (1);
562#ifdef DEBUG
563	if (a4000_flag)
564		printf("Denise ID = %04x\n", (unsigned short)custom.deniseid);
565#endif
566	if (machineid >> 16)
567		return (0);		/* It's not an A4000 */
568	return (a4000_flag);		/* Machine type not set */
569}
570
571int
572is_a1200()
573{
574	if ((machineid >> 16) == 1200)
575		return (1);		/* It's an A1200 */
576	return (0);			/* Machine type not set */
577}
578