autoconf.c revision 1.120 
1/*	$NetBSD: autoconf.c,v 1.120 2021/08/07 16:18:41 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 1.120 2021/08/07 16:18:41 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 <sys/proc.h>
45#include <machine/cpu.h>
46#include <amiga/amiga/cfdev.h>
47#include <amiga/amiga/device.h>
48#include <amiga/amiga/custom.h>
49#ifdef DRACO
50#include <amiga/amiga/drcustom.h>
51#endif
52#ifdef P5PB_CONSOLE
53#include <amiga/pci/p5pbvar.h>
54#endif /* P5PB_CONSOLE */
55
56#include "acafh.h"
57#if NACAFH > 0
58#include <amiga/dev/acafhvar.h>
59#endif /* NACAFH > 0 */
60
61static void findroot(void);
62void mbattach(device_t, device_t, void *);
63int mbprint(void *, const char *);
64int mbmatch(device_t, cfdata_t, void *);
65
66#include <sys/kernel.h>
67
68u_long boot_partition;
69
70int amiga_realconfig;
71
72/*
73 * called at boot time, configure all devices on system
74 */
75void
76cpu_configure(void)
77{
78	int s;
79#ifdef DEBUG_KERNEL_START
80	int i;
81#endif
82
83	/*
84	 * this is the real thing baby (i.e. not console init)
85	 */
86	amiga_realconfig = 1;
87#ifdef DRACO
88	if (is_draco()) {
89		*draco_intena &= ~DRIRQ_GLOBAL;
90	} else
91#endif
92	custom.intena = INTF_INTEN;
93	s = splhigh();
94
95	if (config_rootfound("mainbus", NULL) == NULL)
96		panic("no mainbus found");
97
98#ifdef DEBUG_KERNEL_START
99	printf("survived autoconf, going to enable interrupts\n");
100#endif
101
102#ifdef DRACO
103	if (is_draco()) {
104		*draco_intena |= DRIRQ_GLOBAL;
105		/* softints always enabled */
106	} else
107#endif
108	{
109		custom.intena = INTF_SETCLR | INTF_INTEN;
110
111		/* also enable hardware aided software interrupts */
112		custom.intena = INTF_SETCLR | INTF_SOFTINT;
113	}
114#ifdef DEBUG_KERNEL_START
115	for (i=splhigh(); i>=s ;i-=0x100) {
116		splx(i);
117		printf("%d...", (i>>8) & 7);
118	}
119	printf("survived interrupt enable\n");
120#else
121	splx(s);
122#endif
123#ifdef DEBUG_KERNEL_START
124	printf("survived configure...\n");
125#endif
126}
127
128void
129cpu_rootconf(void)
130{
131	findroot();
132#ifdef DEBUG_KERNEL_START
133	printf("survived findroot()\n");
134#endif
135	rootconf();
136}
137
138/*ARGSUSED*/
139int
140simple_devprint(void *aux, const char *pnp)
141{
142	return(QUIET);
143}
144
145int
146matchname(const char *fp, const char *sp)
147{
148	int len;
149
150	len = strlen(fp);
151	if (strlen(sp) != len)
152		return(0);
153	if (memcmp(fp, sp, len) == 0)
154		return(1);
155	return(0);
156}
157
158/*
159 * use config_search_ia to find appropriate device, then call that device
160 * directly with NULL device variable storage.  A device can then
161 * always tell the difference betwean the real and console init
162 * by checking for NULL.
163 */
164int
165amiga_config_found(cfdata_t pcfp, device_t parent, void *aux, cfprint_t pfn,
166    const struct cfargs *cfargs)
167{
168	struct device temp;
169	cfdata_t cf;
170	const struct cfattach *ca;
171	int rv = 0;
172
173	if (amiga_realconfig) {
174		rv = config_found(parent, aux, pfn, cfargs) != NULL;
175		goto out;
176	}
177
178	if (parent == NULL) {
179		memset(&temp, 0, sizeof temp);
180		parent = &temp;
181	}
182
183	parent->dv_cfdata = pcfp;
184	parent->dv_cfdriver = config_cfdriver_lookup(pcfp->cf_name);
185	parent->dv_unit = pcfp->cf_unit;
186
187	if ((cf = config_search(parent, aux, cfargs)) != NULL) {
188		ca = config_cfattach_lookup(cf->cf_name, cf->cf_atname);
189		if (ca != NULL) {
190			(*ca->ca_attach)(parent, NULL, aux);
191			rv = 1;
192		}
193	}
194	parent->dv_cfdata = NULL;
195 out:
196	return rv;
197}
198
199/*
200 * this function needs to get enough configured to do a console
201 * basically this means start attaching the grfxx's that support
202 * the console. Kinda hacky but it works.
203 */
204void
205config_console(void)
206{
207	cfdata_t cf;
208
209	config_init();
210
211	/*
212	 * we need mainbus' cfdata.
213	 */
214	cf = config_rootsearch(NULL, "mainbus", NULL);
215	if (cf == NULL) {
216		panic("no mainbus");
217	}
218
219	/*
220	 * delay clock calibration.
221	 */
222	amiga_config_found(cf, NULL, __UNCONST("clock"), NULL, CFARGS_NONE);
223
224	/*
225	 * internal grf.
226	 */
227#ifdef DRACO
228	if (!(is_draco()))
229#endif
230		amiga_config_found(cf, NULL, __UNCONST("grfcc"), NULL,
231		    CFARGS_NONE);
232
233	/*
234	 * zbus knows when its not for real and will
235	 * only configure the appropriate hardware
236	 */
237	amiga_config_found(cf, NULL, __UNCONST("zbus"), NULL, CFARGS_NONE);
238}
239
240/*
241 * mainbus driver
242 */
243CFATTACH_DECL_NEW(mainbus, 0,
244    mbmatch, mbattach, NULL, NULL);
245
246int
247mbmatch(device_t parent, cfdata_t cf, void *aux)
248{
249#if 0	/*
250	 * XXX is this right? but we need to be found twice
251	 * (early console init hack)
252	 */
253	static int mainbus_matched = 0;
254
255	/* Allow only one instance. */
256	if (mainbus_matched)
257		return (0);
258
259	mainbus_matched = 1;
260#endif
261	return (1);
262}
263
264/*
265 * "find" all the things that should be there.
266 */
267void
268mbattach(device_t parent, device_t self, void *aux)
269{
270	printf("\n");
271	config_found(self, __UNCONST("clock"), simple_devprint, CFARGS_NONE);
272	if (is_a3000() || is_a4000()) {
273		config_found(self, __UNCONST("a34kbbc"), simple_devprint,
274		    CFARGS_NONE);
275	} else
276#ifdef DRACO
277	if (!is_draco())
278#endif
279	{
280		config_found(self, __UNCONST("a2kbbc"), simple_devprint,
281		    CFARGS_NONE);
282	}
283#ifdef DRACO
284	if (is_draco()) {
285		config_found(self, __UNCONST("drbbc"), simple_devprint,
286		    CFARGS_NONE);
287		config_found(self, __UNCONST("kbd"), simple_devprint,
288		    CFARGS_NONE);
289		config_found(self, __UNCONST("drsc"), simple_devprint,
290		    CFARGS_NONE);
291		config_found(self, __UNCONST("drsupio"), simple_devprint,
292		    CFARGS_NONE);
293	} else
294#endif
295	{
296		config_found(self, __UNCONST("ser"), simple_devprint,
297		    CFARGS_NONE);
298		config_found(self, __UNCONST("par"), simple_devprint,
299		    CFARGS_NONE);
300		config_found(self, __UNCONST("kbd"), simple_devprint,
301		    CFARGS_NONE);
302		config_found(self, __UNCONST("ms"), simple_devprint,
303		    CFARGS_NONE);
304		config_found(self, __UNCONST("grfcc"), simple_devprint,
305		    CFARGS_NONE);
306		config_found(self, __UNCONST("amidisplaycc"), simple_devprint,
307		    CFARGS_NONE);
308		config_found(self, __UNCONST("fdc"), simple_devprint,
309		    CFARGS_NONE);
310	}
311	if (is_a4000() || is_a1200() || is_a600())
312		config_found(self, __UNCONST("wdc"), simple_devprint,
313		    CFARGS_NONE);
314	if (is_a4000())			/* Try to configure A4000T SCSI */
315		config_found(self, __UNCONST("afsc"), simple_devprint,
316		    CFARGS_NONE);
317	if (is_a3000())
318		config_found(self, __UNCONST("ahsc"), simple_devprint,
319		    CFARGS_NONE);
320	if (is_a600() || is_a1200())
321		config_found(self, __UNCONST("pccard"), simple_devprint,
322		    CFARGS_NONE);
323	if (is_a1200())
324		config_found(self, __UNCONST("a1k2cp"), simple_devprint,
325		    CFARGS_NONE);
326#ifdef DRACO
327	if (!is_draco())
328#endif
329		config_found(self, __UNCONST("aucc"), simple_devprint,
330		    CFARGS_NONE);
331
332#if NACAFH > 0
333	if (!is_a600() && !is_a1200() && !is_a3000() && !is_a4000())
334		if (acafh_mbattach_probe() == true)
335			config_found(self, __UNCONST("acafh"), simple_devprint,
336			    CFARGS_NONE);
337#endif
338
339	config_found(self, __UNCONST("zbus"), simple_devprint, CFARGS_NONE);
340}
341
342int
343mbprint(void *aux, const char *pnp)
344{
345	if (pnp)
346		aprint_normal("%s at %s", (char *)aux, pnp);
347	return(UNCONF);
348}
349
350/*
351 * The system will assign the "booted device" indicator (and thus
352 * rootdev if rootspec is wildcarded) to the first partition 'a'
353 * in preference of boot.  However, it does walk unit backwards
354 * to remain compatible with the old Amiga method of picking the
355 * last root found.
356 */
357#include <sys/fcntl.h>		/* XXXX and all that uses it */
358#include <sys/proc.h>		/* XXXX and all that uses it */
359
360#include "fd.h"
361#include "sd.h"
362#include "cd.h"
363#include "wd.h"
364
365#if NFD > 0
366extern  struct cfdriver fd_cd;
367extern	const struct bdevsw fd_bdevsw;
368#endif
369#if NSD > 0
370extern  struct cfdriver sd_cd;
371extern	const struct bdevsw sd_bdevsw;
372#endif
373#if NCD > 0
374extern  struct cfdriver cd_cd;
375extern	const struct bdevsw cd_bdevsw;
376#endif
377#if NWD > 0
378extern  struct cfdriver wd_cd;
379extern	const struct bdevsw wd_bdevsw;
380#endif
381
382struct cfdriver *genericconf[] = {
383#if NFD > 0
384	&fd_cd,
385#endif
386#if NSD > 0
387	&sd_cd,
388#endif
389#if NWD > 0
390	&wd_cd,
391#endif
392#if NCD > 0
393	&cd_cd,
394#endif
395	NULL,
396};
397
398void
399findroot(void)
400{
401	struct disk *dkp;
402	struct partition *pp;
403	device_t *devs;
404	int i, maj, unit;
405	const struct bdevsw *bdp;
406
407#if NSD > 0
408	/*
409	 * If we have the boot partition offset (boot_partition), try
410	 * to locate the device corresponding to that partition.
411	 */
412#ifdef DEBUG_KERNEL_START
413	printf("Boot partition offset is %ld\n", boot_partition);
414#endif
415	if (boot_partition != 0) {
416
417		for (unit = 0; unit < sd_cd.cd_ndevs; ++unit) {
418#ifdef DEBUG_KERNEL_START
419			printf("probing for sd%d\n", unit);
420#endif
421			if (device_lookup(&sd_cd,unit) == NULL)
422				continue;
423
424			/*
425			 * Find the disk corresponding to the current
426			 * device.
427			 */
428			devs = sd_cd.cd_devs;
429			if ((dkp = disk_find(device_xname(device_lookup(&sd_cd, unit)))) == NULL)
430				continue;
431
432			if (dkp->dk_driver == NULL ||
433			    dkp->dk_driver->d_strategy == NULL)
434				continue;
435			bdp = &sd_bdevsw;
436			maj = bdevsw_lookup_major(bdp);
437			if ((*bdp->d_open)(MAKEDISKDEV(maj, unit, RAW_PART),
438			    FREAD | FNONBLOCK, 0, curlwp))
439				continue;
440			(*bdp->d_close)(MAKEDISKDEV(maj, unit, RAW_PART),
441			    FREAD | FNONBLOCK, 0, curlwp);
442			pp = &dkp->dk_label->d_partitions[0];
443			for (i = 0; i < dkp->dk_label->d_npartitions;
444			    i++, pp++) {
445#ifdef DEBUG_KERNEL_START
446				printf("sd%d%c type %d offset %d size %d\n",
447					unit, i+'a', pp->p_fstype,
448					pp->p_offset, pp->p_size);
449#endif
450				if (pp->p_size == 0 ||
451				    (pp->p_fstype != FS_BSDFFS &&
452				    pp->p_fstype != FS_SWAP))
453					continue;
454				if (pp->p_offset == boot_partition) {
455					if (booted_device == NULL) {
456						booted_device = devs[unit];
457						booted_partition = i;
458					} else
459						printf("Ambiguous boot device\n");
460				}
461			}
462		}
463	}
464	if (booted_device != NULL)
465		return;		/* we found the boot device */
466#endif
467
468	for (i = 0; genericconf[i] != NULL; i++) {
469		for (unit = genericconf[i]->cd_ndevs - 1; unit >= 0; unit--) {
470			if (genericconf[i]->cd_devs[unit] == NULL)
471				continue;
472
473			/*
474			 * Find the disk structure corresponding to the
475			 * current device.
476			 */
477			devs = (device_t *)genericconf[i]->cd_devs;
478			if ((dkp = disk_find(device_xname(devs[unit]))) == NULL)
479				continue;
480
481			if (dkp->dk_driver == NULL ||
482			    dkp->dk_driver->d_strategy == NULL)
483				continue;
484
485			bdp = NULL;
486#if NFD > 0
487			if (fd_bdevsw.d_strategy == dkp->dk_driver->d_strategy)
488				bdp = &fd_bdevsw;
489#endif
490#if NSD > 0
491			if (sd_bdevsw.d_strategy == dkp->dk_driver->d_strategy)
492				bdp = &sd_bdevsw;
493#endif
494#if NWD > 0
495			if (wd_bdevsw.d_strategy == dkp->dk_driver->d_strategy)
496				bdp = &wd_bdevsw;
497#endif
498#if NCD > 0
499			if (cd_bdevsw.d_strategy == dkp->dk_driver->d_strategy)
500				bdp = &cd_bdevsw;
501#endif
502#ifdef DIAGNOSTIC
503			if (bdp == NULL)
504				panic("findroot: impossible");
505#endif
506			maj = bdevsw_lookup_major(bdp);
507
508			/* Open disk; forces read of disklabel. */
509			if ((*bdp->d_open)(MAKEDISKDEV(maj, unit, RAW_PART),
510				FREAD|FNONBLOCK, 0, &lwp0))
511				continue;
512			(void)(*bdp->d_close)(MAKEDISKDEV(maj, unit, RAW_PART),
513				FREAD|FNONBLOCK, 0, &lwp0);
514
515			pp = &dkp->dk_label->d_partitions[0];
516			if (pp->p_size != 0 && pp->p_fstype == FS_BSDFFS) {
517				booted_device = devs[unit];
518				booted_partition = 0;
519				return;
520			}
521		}
522	}
523}
524
525/*
526 * Try to determine, of this machine is an A3000, which has a builtin
527 * realtime clock and scsi controller, so that this hardware is only
528 * included as "configured" if this IS an A3000
529 */
530
531int a3000_flag = 1;		/* patchable */
532#ifdef A4000
533int a4000_flag = 1;		/* patchable - default to A4000 */
534#else
535int a4000_flag = 0;		/* patchable */
536#endif
537
538int
539is_a3000(void)
540{
541	/* this is a dirty kludge.. but how do you do this RIGHT ? :-) */
542	extern long boot_fphystart;
543	short sc;
544
545	if ((machineid >> 16) == 3000)
546		return (1);			/* It's an A3000 */
547	if (machineid >> 16)
548		return (0);			/* It's not an A3000 */
549	/* Machine type is unknown, so try to guess it */
550	/* where is fastram on the A4000 ?? */
551	/* if fastram is below 0x07000000, assume it's not an A3000 */
552	if (boot_fphystart < 0x07000000)
553		return(0);
554	/*
555	 * OK, fastram starts at or above 0x07000000, check specific
556	 * machines
557	 */
558	for (sc = 0; sc < ncfdev; sc++) {
559		switch (cfdev[sc].rom.manid) {
560		case 2026:		/* Progressive Peripherals, Inc */
561			switch (cfdev[sc].rom.prodid) {
562			case 0:		/* PPI Mercury - A3000 */
563			case 1:		/* PP&S A3000 '040 */
564				return(1);
565			case 150:	/* PPI Zeus - it's an A2000 */
566			case 105:	/* PP&S A2000 '040 */
567			case 187:	/* PP&S A500 '040 */
568				return(0);
569			}
570			break;
571
572		case 2112:			/* IVS */
573			switch (cfdev[sc].rom.prodid) {
574			case 242:
575				return(0);	/* A2000 accelerator? */
576			}
577			break;
578		}
579	}
580	return (a3000_flag);		/* XXX let flag tell now */
581}
582
583int
584is_a4000(void)
585{
586	if ((machineid >> 16) == 4000)
587		return (1);		/* It's an A4000 */
588	if ((machineid >> 16) == 1200)
589		return (0);		/* It's an A1200, so not A4000 */
590#ifdef DRACO
591	if (is_draco())
592		return (0);
593#endif
594	/* Do I need this any more? */
595	if ((custom.deniseid & 0xff) == 0xf8)
596		return (1);
597#ifdef DEBUG
598	if (a4000_flag)
599		printf("Denise ID = %04x\n", (unsigned short)custom.deniseid);
600#endif
601	if (machineid >> 16)
602		return (0);		/* It's not an A4000 */
603	return (a4000_flag);		/* Machine type not set */
604}
605
606int
607is_a1200(void)
608{
609	if ((machineid >> 16) == 1200)
610		return (1);		/* It's an A1200 */
611	return (0);			/* Machine type not set */
612}
613
614int
615is_a600(void)
616{
617	if ((machineid >> 16) == 600)
618		return (1);		/* It's an A600 */
619	return (0);			/* Machine type not set */
620}
621
622void
623device_register(device_t dev, void *aux)
624{
625#ifdef P5PB_CONSOLE
626	p5pb_device_register(dev, aux);
627#endif /* P5PB_CONSOLE */
628}
629