autoconf.c revision 1.84 
1/*	$NetBSD: autoconf.c,v 1.84 2002/09/30 17:36:35 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 1.84 2002/09/30 17:36:35 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	config_init();
197
198	/*
199	 * we need mainbus' cfdata.
200	 */
201	cf = config_rootsearch(NULL, "mainbus", "mainbus");
202	if (cf == NULL) {
203		panic("no mainbus");
204	}
205	/*
206	 * delay clock calibration.
207	 */
208	amiga_config_found(cf, NULL, "clock", NULL);
209
210	/*
211	 * internal grf.
212	 */
213#ifdef DRACO
214	if (!(is_draco()))
215#endif
216		amiga_config_found(cf, NULL, "grfcc", NULL);
217
218	/*
219	 * zbus knows when its not for real and will
220	 * only configure the appropriate hardware
221	 */
222	amiga_config_found(cf, NULL, "zbus", NULL);
223}
224
225/*
226 * mainbus driver
227 */
228const struct cfattach mainbus_ca = {
229	sizeof(struct device), mbmatch, mbattach
230};
231
232int
233mbmatch(pdp, cfp, auxp)
234	struct device	*pdp;
235	struct cfdata	*cfp;
236	void		*auxp;
237{
238#if 0	/*
239	 * XXX is this right? but we need to be found twice
240	 * (early console init hack)
241	 */
242	static int mainbus_matched = 0;
243
244	/* Allow only one instance. */
245	if (mainbus_matched)
246		return (0);
247
248	mainbus_matched = 1;
249#endif
250	return (1);
251}
252
253/*
254 * "find" all the things that should be there.
255 */
256void
257mbattach(pdp, dp, auxp)
258	struct device *pdp, *dp;
259	void *auxp;
260{
261	printf("\n");
262	config_found(dp, "clock", simple_devprint);
263	if (is_a3000() || is_a4000()) {
264		config_found(dp, "a34kbbc", simple_devprint);
265	} else
266#ifdef DRACO
267	if (!is_draco())
268#endif
269	{
270		config_found(dp, "a2kbbc", simple_devprint);
271	}
272#ifdef DRACO
273	if (is_draco()) {
274		config_found(dp, "drbbc", simple_devprint);
275		config_found(dp, "kbd", simple_devprint);
276		config_found(dp, "drsc", simple_devprint);
277		config_found(dp, "drsupio", simple_devprint);
278	} else
279#endif
280	{
281		config_found(dp, "ser", simple_devprint);
282		config_found(dp, "par", simple_devprint);
283		config_found(dp, "kbd", simple_devprint);
284		config_found(dp, "ms", simple_devprint);
285		config_found(dp, "grfcc", simple_devprint);
286		config_found(dp, "amidisplaycc", simple_devprint);
287		config_found(dp, "fdc", simple_devprint);
288	}
289	if (is_a4000() || is_a1200()) {
290		config_found(dp, "wdc", simple_devprint);
291		config_found(dp, "idesc", simple_devprint);
292	}
293	if (is_a4000())			/* Try to configure A4000T SCSI */
294		config_found(dp, "afsc", simple_devprint);
295	if (is_a3000())
296		config_found(dp, "ahsc", simple_devprint);
297	if (/*is_a600() || */is_a1200())
298		config_found(dp, "pccard", simple_devprint);
299#ifdef DRACO
300	if (!is_draco())
301#endif
302		config_found(dp, "aucc", simple_devprint);
303
304	config_found(dp, "zbus", simple_devprint);
305}
306
307int
308mbprint(auxp, pnp)
309	void *auxp;
310	const char *pnp;
311{
312	if (pnp)
313		printf("%s at %s", (char *)auxp, pnp);
314	return(UNCONF);
315}
316
317/*
318 * The system will assign the "booted device" indicator (and thus
319 * rootdev if rootspec is wildcarded) to the first partition 'a'
320 * in preference of boot.  However, it does walk unit backwards
321 * to remain compatible with the old Amiga method of picking the
322 * last root found.
323 */
324#include <sys/fcntl.h>		/* XXXX and all that uses it */
325#include <sys/proc.h>		/* XXXX and all that uses it */
326
327#include "fd.h"
328#include "sd.h"
329#include "cd.h"
330#include "wd.h"
331
332#if NFD > 0
333extern  struct cfdriver fd_cd;
334extern	const struct bdevsw fd_bdevsw;
335#endif
336#if NSD > 0
337extern  struct cfdriver sd_cd;
338extern	const struct bdevsw sd_bdevsw;
339#endif
340#if NCD > 0
341extern  struct cfdriver cd_cd;
342extern	const struct bdevsw cd_bdevsw;
343#endif
344#if NWD > 0
345extern  struct cfdriver wd_cd;
346extern	const struct bdevsw wd_bdevsw;
347#endif
348
349struct cfdriver *genericconf[] = {
350#if NFD > 0
351	&fd_cd,
352#endif
353#if NSD > 0
354	&sd_cd,
355#endif
356#if NWD > 0
357	&wd_cd,
358#endif
359#if NCD > 0
360	&cd_cd,
361#endif
362	NULL,
363};
364
365void
366findroot(void)
367{
368	struct disk *dkp;
369	struct partition *pp;
370	struct device **devs;
371	int i, maj, unit;
372	const struct bdevsw *bdp;
373
374#if NSD > 0
375	/*
376	 * If we have the boot partition offset (boot_partition), try
377	 * to locate the device corresponding to that partition.
378	 */
379#ifdef DEBUG_KERNEL_START
380	printf("Boot partition offset is %ld\n", boot_partition);
381#endif
382	if (boot_partition != 0) {
383		int i;
384
385		for (unit = 0; unit < sd_cd.cd_ndevs; ++unit) {
386#ifdef DEBUG_KERNEL_START
387			printf("probing for sd%d\n", unit);
388#endif
389			if (sd_cd.cd_devs[unit] == NULL)
390				continue;
391
392			/*
393			 * Find the disk corresponding to the current
394			 * device.
395			 */
396			devs = (struct device **)sd_cd.cd_devs;
397			if ((dkp = disk_find(devs[unit]->dv_xname)) == NULL)
398				continue;
399
400			if (dkp->dk_driver == NULL ||
401			    dkp->dk_driver->d_strategy == NULL)
402				continue;
403			bdp = &sd_bdevsw;
404			maj = bdevsw_lookup_major(bdp);
405			if ((*bdp->d_open)(MAKEDISKDEV(maj, unit, RAW_PART),
406			    FREAD | FNONBLOCK, 0, curproc))
407				continue;
408			(*bdp->d_close)(MAKEDISKDEV(maj, unit, RAW_PART),
409			    FREAD | FNONBLOCK, 0, curproc);
410			pp = &dkp->dk_label->d_partitions[0];
411			for (i = 0; i < dkp->dk_label->d_npartitions;
412			    i++, pp++) {
413#ifdef DEBUG_KERNEL_START
414				printf("sd%d%c type %d offset %d size %d\n",
415					unit, i+'a', pp->p_fstype,
416					pp->p_offset, pp->p_size);
417#endif
418				if (pp->p_size == 0 ||
419				    (pp->p_fstype != FS_BSDFFS &&
420				    pp->p_fstype != FS_SWAP))
421					continue;
422				if (pp->p_offset == boot_partition) {
423					if (booted_device == NULL) {
424						booted_device = devs[unit];
425						booted_partition = i;
426					} else
427						printf("Ambiguous boot device\n");
428				}
429			}
430		}
431	}
432	if (booted_device != NULL)
433		return;		/* we found the boot device */
434#endif
435
436	for (i = 0; genericconf[i] != NULL; i++) {
437		for (unit = genericconf[i]->cd_ndevs - 1; unit >= 0; unit--) {
438			if (genericconf[i]->cd_devs[unit] == NULL)
439				continue;
440
441			/*
442			 * Find the disk structure corresponding to the
443			 * current device.
444			 */
445			devs = (struct device **)genericconf[i]->cd_devs;
446			if ((dkp = disk_find(devs[unit]->dv_xname)) == NULL)
447				continue;
448
449			if (dkp->dk_driver == NULL ||
450			    dkp->dk_driver->d_strategy == NULL)
451				continue;
452
453#if NFD > 0
454			if (fd_bdevsw.d_strategy == dkp->dk_driver->d_strategy)
455				bdp = &fd_bdevsw;
456#endif
457#if NSD > 0
458			if (sd_bdevsw.d_strategy == dkp->dk_driver->d_strategy)
459				bdp = &sd_bdevsw;
460#endif
461#if NWD > 0
462			if (wd_bdevsw.d_strategy == dkp->dk_driver->d_strategy)
463				bdp = &wd_bdevsw;
464#endif
465#if NCD > 0
466			if (cd_bdevsw.d_strategy == dkp->dk_driver->d_strategy)
467				bdp = &cd_bdevsw;
468#endif
469#ifdef DIAGNOSTIC
470			if (bdp == NULL)
471				panic("findroot: impossible");
472#endif
473			maj = bdevsw_lookup_major(bdp);
474
475			/* Open disk; forces read of disklabel. */
476			if ((*bdp->d_open)(MAKEDISKDEV(maj,
477			    unit, 0), FREAD|FNONBLOCK, 0, &proc0))
478				continue;
479			(void)(*bdp->d_close)(MAKEDISKDEV(maj,
480			    unit, 0), FREAD|FNONBLOCK, 0, &proc0);
481
482			pp = &dkp->dk_label->d_partitions[0];
483			if (pp->p_size != 0 && pp->p_fstype == FS_BSDFFS) {
484				booted_device = devs[unit];
485				booted_partition = 0;
486				return;
487			}
488		}
489	}
490}
491
492/*
493 * Try to determine, of this machine is an A3000, which has a builtin
494 * realtime clock and scsi controller, so that this hardware is only
495 * included as "configured" if this IS an A3000
496 */
497
498int a3000_flag = 1;		/* patchable */
499#ifdef A4000
500int a4000_flag = 1;		/* patchable - default to A4000 */
501#else
502int a4000_flag = 0;		/* patchable */
503#endif
504
505int
506is_a3000()
507{
508	/* this is a dirty kludge.. but how do you do this RIGHT ? :-) */
509	extern long boot_fphystart;
510	short sc;
511
512	if ((machineid >> 16) == 3000)
513		return (1);			/* It's an A3000 */
514	if (machineid >> 16)
515		return (0);			/* It's not an A3000 */
516	/* Machine type is unknown, so try to guess it */
517	/* where is fastram on the A4000 ?? */
518	/* if fastram is below 0x07000000, assume it's not an A3000 */
519	if (boot_fphystart < 0x07000000)
520		return(0);
521	/*
522	 * OK, fastram starts at or above 0x07000000, check specific
523	 * machines
524	 */
525	for (sc = 0; sc < ncfdev; sc++) {
526		switch (cfdev[sc].rom.manid) {
527		case 2026:		/* Progressive Peripherals, Inc */
528			switch (cfdev[sc].rom.prodid) {
529			case 0:		/* PPI Mercury - A3000 */
530			case 1:		/* PP&S A3000 '040 */
531				return(1);
532			case 150:	/* PPI Zeus - it's an A2000 */
533			case 105:	/* PP&S A2000 '040 */
534			case 187:	/* PP&S A500 '040 */
535				return(0);
536			}
537			break;
538
539		case 2112:			/* IVS */
540			switch (cfdev[sc].rom.prodid) {
541			case 242:
542				return(0);	/* A2000 accelerator? */
543			}
544			break;
545		}
546	}
547	return (a3000_flag);		/* XXX let flag tell now */
548}
549
550int
551is_a4000()
552{
553	if ((machineid >> 16) == 4000)
554		return (1);		/* It's an A4000 */
555	if ((machineid >> 16) == 1200)
556		return (0);		/* It's an A1200, so not A4000 */
557#ifdef DRACO
558	if (is_draco())
559		return (0);
560#endif
561	/* Do I need this any more? */
562	if ((custom.deniseid & 0xff) == 0xf8)
563		return (1);
564#ifdef DEBUG
565	if (a4000_flag)
566		printf("Denise ID = %04x\n", (unsigned short)custom.deniseid);
567#endif
568	if (machineid >> 16)
569		return (0);		/* It's not an A4000 */
570	return (a4000_flag);		/* Machine type not set */
571}
572
573int
574is_a1200()
575{
576	if ((machineid >> 16) == 1200)
577		return (1);		/* It's an A1200 */
578	return (0);			/* Machine type not set */
579}
580