autoconf.c revision 1.122 
1/*	$NetBSD: autoconf.c,v 1.122 2023/10/14 08:05:25 andvar 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 1.122 2023/10/14 08:05:25 andvar 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/device_impl.h>	/* XXX autoconf abuse */
43#include <sys/disklabel.h>
44#include <sys/disk.h>
45#include <sys/proc.h>
46#include <machine/cpu.h>
47#include <amiga/amiga/cfdev.h>
48#include <amiga/amiga/device.h>
49#include <amiga/amiga/custom.h>
50#ifdef DRACO
51#include <amiga/amiga/drcustom.h>
52#endif
53#ifdef P5PB_CONSOLE
54#include <amiga/pci/p5pbvar.h>
55#endif /* P5PB_CONSOLE */
56
57#include "acafh.h"
58#if NACAFH > 0
59#include <amiga/dev/acafhvar.h>
60#endif /* NACAFH > 0 */
61
62static void findroot(void);
63void mbattach(device_t, device_t, void *);
64int mbprint(void *, const char *);
65int mbmatch(device_t, cfdata_t, void *);
66
67#include <sys/kernel.h>
68
69u_long boot_partition;
70
71int amiga_realconfig;
72
73/*
74 * called at boot time, configure all devices on system
75 */
76void
77cpu_configure(void)
78{
79	int s;
80#ifdef DEBUG_KERNEL_START
81	int i;
82#endif
83
84	/*
85	 * this is the real thing baby (i.e. not console init)
86	 */
87	amiga_realconfig = 1;
88#ifdef DRACO
89	if (is_draco()) {
90		*draco_intena &= ~DRIRQ_GLOBAL;
91	} else
92#endif
93	custom.intena = INTF_INTEN;
94	s = splhigh();
95
96	if (config_rootfound("mainbus", NULL) == NULL)
97		panic("no mainbus found");
98
99#ifdef DEBUG_KERNEL_START
100	printf("survived autoconf, going to enable interrupts\n");
101#endif
102
103#ifdef DRACO
104	if (is_draco()) {
105		*draco_intena |= DRIRQ_GLOBAL;
106		/* softints always enabled */
107	} else
108#endif
109	{
110		custom.intena = INTF_SETCLR | INTF_INTEN;
111
112		/* also enable hardware aided software interrupts */
113		custom.intena = INTF_SETCLR | INTF_SOFTINT;
114	}
115#ifdef DEBUG_KERNEL_START
116	for (i=splhigh(); i>=s ;i-=0x100) {
117		splx(i);
118		printf("%d...", (i>>8) & 7);
119	}
120	printf("survived interrupt enable\n");
121#else
122	splx(s);
123#endif
124#ifdef DEBUG_KERNEL_START
125	printf("survived configure...\n");
126#endif
127}
128
129void
130cpu_rootconf(void)
131{
132	findroot();
133#ifdef DEBUG_KERNEL_START
134	printf("survived findroot()\n");
135#endif
136	rootconf();
137}
138
139/*ARGSUSED*/
140int
141simple_devprint(void *aux, const char *pnp)
142{
143	return(QUIET);
144}
145
146int
147matchname(const char *fp, const char *sp)
148{
149	int len;
150
151	len = strlen(fp);
152	if (strlen(sp) != len)
153		return(0);
154	if (memcmp(fp, sp, len) == 0)
155		return(1);
156	return(0);
157}
158
159/*
160 * use config_search_ia to find appropriate device, then call that device
161 * directly with NULL device variable storage.  A device can then
162 * always tell the difference between the real and console init
163 * by checking for NULL.
164 */
165int
166amiga_config_found(cfdata_t pcfp, device_t parent, void *aux, cfprint_t pfn,
167    const struct cfargs *cfargs)
168{
169	struct device temp;
170	cfdata_t cf;
171	const struct cfattach *ca;
172	int rv = 0;
173
174	if (amiga_realconfig) {
175		rv = config_found(parent, aux, pfn, cfargs) != NULL;
176		goto out;
177	}
178
179	if (parent == NULL) {
180		memset(&temp, 0, sizeof temp);
181		parent = &temp;
182	}
183
184	parent->dv_cfdata = pcfp;
185	parent->dv_cfdriver = config_cfdriver_lookup(pcfp->cf_name);
186	parent->dv_unit = pcfp->cf_unit;
187
188	if ((cf = config_search(parent, aux, cfargs)) != NULL) {
189		ca = config_cfattach_lookup(cf->cf_name, cf->cf_atname);
190		if (ca != NULL) {
191			(*ca->ca_attach)(parent, NULL, aux);
192			rv = 1;
193		}
194	}
195	parent->dv_cfdata = NULL;
196 out:
197	return rv;
198}
199
200/*
201 * this function needs to get enough configured to do a console
202 * basically this means start attaching the grfxx's that support
203 * the console. Kinda hacky but it works.
204 */
205void
206config_console(void)
207{
208	cfdata_t cf;
209
210	config_init();
211
212	/*
213	 * we need mainbus' cfdata.
214	 */
215	cf = config_rootsearch(NULL, "mainbus", NULL);
216	if (cf == NULL) {
217		panic("no mainbus");
218	}
219
220	/*
221	 * delay clock calibration.
222	 */
223	amiga_config_found(cf, NULL, __UNCONST("clock"), NULL, CFARGS_NONE);
224
225	/*
226	 * internal grf.
227	 */
228#ifdef DRACO
229	if (!(is_draco()))
230#endif
231		amiga_config_found(cf, NULL, __UNCONST("grfcc"), NULL,
232		    CFARGS_NONE);
233
234	/*
235	 * zbus knows when its not for real and will
236	 * only configure the appropriate hardware
237	 */
238	amiga_config_found(cf, NULL, __UNCONST("zbus"), NULL, CFARGS_NONE);
239}
240
241/*
242 * mainbus driver
243 */
244CFATTACH_DECL_NEW(mainbus, 0,
245    mbmatch, mbattach, NULL, NULL);
246
247int
248mbmatch(device_t parent, cfdata_t cf, void *aux)
249{
250#if 0	/*
251	 * XXX is this right? but we need to be found twice
252	 * (early console init hack)
253	 */
254	static int mainbus_matched = 0;
255
256	/* Allow only one instance. */
257	if (mainbus_matched)
258		return (0);
259
260	mainbus_matched = 1;
261#endif
262	return (1);
263}
264
265/*
266 * "find" all the things that should be there.
267 */
268void
269mbattach(device_t parent, device_t self, void *aux)
270{
271	printf("\n");
272	config_found(self, __UNCONST("clock"), simple_devprint, CFARGS_NONE);
273	if (is_a3000() || is_a4000()) {
274		config_found(self, __UNCONST("a34kbbc"), simple_devprint,
275		    CFARGS_NONE);
276	} else
277#ifdef DRACO
278	if (!is_draco())
279#endif
280	{
281		config_found(self, __UNCONST("a2kbbc"), simple_devprint,
282		    CFARGS_NONE);
283	}
284#ifdef DRACO
285	if (is_draco()) {
286		config_found(self, __UNCONST("drbbc"), simple_devprint,
287		    CFARGS_NONE);
288		config_found(self, __UNCONST("kbd"), simple_devprint,
289		    CFARGS_NONE);
290		config_found(self, __UNCONST("drsc"), simple_devprint,
291		    CFARGS_NONE);
292		config_found(self, __UNCONST("drsupio"), simple_devprint,
293		    CFARGS_NONE);
294	} else
295#endif
296	{
297		config_found(self, __UNCONST("ser"), simple_devprint,
298		    CFARGS_NONE);
299		config_found(self, __UNCONST("par"), simple_devprint,
300		    CFARGS_NONE);
301		config_found(self, __UNCONST("kbd"), simple_devprint,
302		    CFARGS_NONE);
303		config_found(self, __UNCONST("ms"), simple_devprint,
304		    CFARGS_NONE);
305		config_found(self, __UNCONST("grfcc"), simple_devprint,
306		    CFARGS_NONE);
307		config_found(self, __UNCONST("amidisplaycc"), simple_devprint,
308		    CFARGS_NONE);
309		config_found(self, __UNCONST("fdc"), simple_devprint,
310		    CFARGS_NONE);
311	}
312	if (is_a4000() || is_a1200() || is_a600())
313		config_found(self, __UNCONST("wdc"), simple_devprint,
314		    CFARGS_NONE);
315	if (is_a4000())			/* Try to configure A4000T SCSI */
316		config_found(self, __UNCONST("afsc"), simple_devprint,
317		    CFARGS_NONE);
318	if (is_a3000())
319		config_found(self, __UNCONST("ahsc"), simple_devprint,
320		    CFARGS_NONE);
321	if (is_a600() || is_a1200())
322		config_found(self, __UNCONST("pccard"), simple_devprint,
323		    CFARGS_NONE);
324	if (is_a1200())
325		config_found(self, __UNCONST("a1k2cp"), simple_devprint,
326		    CFARGS_NONE);
327#ifdef DRACO
328	if (!is_draco())
329#endif
330		config_found(self, __UNCONST("aucc"), simple_devprint,
331		    CFARGS_NONE);
332
333#if NACAFH > 0
334	if (!is_a600() && !is_a1200() && !is_a3000() && !is_a4000())
335		if (acafh_mbattach_probe() == true)
336			config_found(self, __UNCONST("acafh"), simple_devprint,
337			    CFARGS_NONE);
338#endif
339
340	config_found(self, __UNCONST("zbus"), simple_devprint, CFARGS_NONE);
341}
342
343int
344mbprint(void *aux, const char *pnp)
345{
346	if (pnp)
347		aprint_normal("%s at %s", (char *)aux, pnp);
348	return(UNCONF);
349}
350
351/*
352 * The system will assign the "booted device" indicator (and thus
353 * rootdev if rootspec is wildcarded) to the first partition 'a'
354 * in preference of boot.  However, it does walk unit backwards
355 * to remain compatible with the old Amiga method of picking the
356 * last root found.
357 */
358#include <sys/fcntl.h>		/* XXXX and all that uses it */
359#include <sys/proc.h>		/* XXXX and all that uses it */
360
361#include "fd.h"
362#include "sd.h"
363#include "cd.h"
364#include "wd.h"
365
366#if NFD > 0
367extern  struct cfdriver fd_cd;
368extern	const struct bdevsw fd_bdevsw;
369#endif
370#if NSD > 0
371extern  struct cfdriver sd_cd;
372extern	const struct bdevsw sd_bdevsw;
373#endif
374#if NCD > 0
375extern  struct cfdriver cd_cd;
376extern	const struct bdevsw cd_bdevsw;
377#endif
378#if NWD > 0
379extern  struct cfdriver wd_cd;
380extern	const struct bdevsw wd_bdevsw;
381#endif
382
383struct cfdriver *genericconf[] = {
384#if NFD > 0
385	&fd_cd,
386#endif
387#if NSD > 0
388	&sd_cd,
389#endif
390#if NWD > 0
391	&wd_cd,
392#endif
393#if NCD > 0
394	&cd_cd,
395#endif
396	NULL,
397};
398
399void
400findroot(void)
401{
402	struct disk *dkp;
403	struct partition *pp;
404	device_t *devs;
405	int i, maj, unit;
406	const struct bdevsw *bdp;
407
408#if NSD > 0
409	/*
410	 * If we have the boot partition offset (boot_partition), try
411	 * to locate the device corresponding to that partition.
412	 */
413#ifdef DEBUG_KERNEL_START
414	printf("Boot partition offset is %ld\n", boot_partition);
415#endif
416	if (boot_partition != 0) {
417
418		for (unit = 0; unit < sd_cd.cd_ndevs; ++unit) {
419#ifdef DEBUG_KERNEL_START
420			printf("probing for sd%d\n", unit);
421#endif
422			if (device_lookup(&sd_cd,unit) == NULL)
423				continue;
424
425			/*
426			 * Find the disk corresponding to the current
427			 * device.
428			 */
429			devs = sd_cd.cd_devs;
430			if ((dkp = disk_find(device_xname(device_lookup(&sd_cd, unit)))) == NULL)
431				continue;
432
433			if (dkp->dk_driver == NULL ||
434			    dkp->dk_driver->d_strategy == NULL)
435				continue;
436			bdp = &sd_bdevsw;
437			maj = bdevsw_lookup_major(bdp);
438			if ((*bdp->d_open)(MAKEDISKDEV(maj, unit, RAW_PART),
439			    FREAD | FNONBLOCK, 0, curlwp))
440				continue;
441			(*bdp->d_close)(MAKEDISKDEV(maj, unit, RAW_PART),
442			    FREAD | FNONBLOCK, 0, curlwp);
443			pp = &dkp->dk_label->d_partitions[0];
444			for (i = 0; i < dkp->dk_label->d_npartitions;
445			    i++, pp++) {
446#ifdef DEBUG_KERNEL_START
447				printf("sd%d%c type %d offset %d size %d\n",
448					unit, i+'a', pp->p_fstype,
449					pp->p_offset, pp->p_size);
450#endif
451				if (pp->p_size == 0 ||
452				    (pp->p_fstype != FS_BSDFFS &&
453				    pp->p_fstype != FS_SWAP))
454					continue;
455				if (pp->p_offset == boot_partition) {
456					if (booted_device == NULL) {
457						booted_device = devs[unit];
458						booted_partition = i;
459					} else
460						printf("Ambiguous boot device\n");
461				}
462			}
463		}
464	}
465	if (booted_device != NULL)
466		return;		/* we found the boot device */
467#endif
468
469	for (i = 0; genericconf[i] != NULL; i++) {
470		for (unit = genericconf[i]->cd_ndevs - 1; unit >= 0; unit--) {
471			if (genericconf[i]->cd_devs[unit] == NULL)
472				continue;
473
474			/*
475			 * Find the disk structure corresponding to the
476			 * current device.
477			 */
478			devs = (device_t *)genericconf[i]->cd_devs;
479			if ((dkp = disk_find(device_xname(devs[unit]))) == NULL)
480				continue;
481
482			if (dkp->dk_driver == NULL ||
483			    dkp->dk_driver->d_strategy == NULL)
484				continue;
485
486			bdp = NULL;
487#if NFD > 0
488			if (fd_bdevsw.d_strategy == dkp->dk_driver->d_strategy)
489				bdp = &fd_bdevsw;
490#endif
491#if NSD > 0
492			if (sd_bdevsw.d_strategy == dkp->dk_driver->d_strategy)
493				bdp = &sd_bdevsw;
494#endif
495#if NWD > 0
496			if (wd_bdevsw.d_strategy == dkp->dk_driver->d_strategy)
497				bdp = &wd_bdevsw;
498#endif
499#if NCD > 0
500			if (cd_bdevsw.d_strategy == dkp->dk_driver->d_strategy)
501				bdp = &cd_bdevsw;
502#endif
503#ifdef DIAGNOSTIC
504			if (bdp == NULL)
505				panic("findroot: impossible");
506#endif
507			maj = bdevsw_lookup_major(bdp);
508
509			/* Open disk; forces read of disklabel. */
510			if ((*bdp->d_open)(MAKEDISKDEV(maj, unit, RAW_PART),
511				FREAD|FNONBLOCK, 0, &lwp0))
512				continue;
513			(void)(*bdp->d_close)(MAKEDISKDEV(maj, unit, RAW_PART),
514				FREAD|FNONBLOCK, 0, &lwp0);
515
516			pp = &dkp->dk_label->d_partitions[0];
517			if (pp->p_size != 0 && pp->p_fstype == FS_BSDFFS) {
518				booted_device = devs[unit];
519				booted_partition = 0;
520				return;
521			}
522		}
523	}
524}
525
526/*
527 * Try to determine, of this machine is an A3000, which has a builtin
528 * realtime clock and scsi controller, so that this hardware is only
529 * included as "configured" if this IS an A3000
530 */
531
532int a3000_flag = 1;		/* patchable */
533#ifdef A4000
534int a4000_flag = 1;		/* patchable - default to A4000 */
535#else
536int a4000_flag = 0;		/* patchable */
537#endif
538
539int
540is_a3000(void)
541{
542	/* this is a dirty kludge.. but how do you do this RIGHT ? :-) */
543	extern long boot_fphystart;
544	short sc;
545
546	if ((machineid >> 16) == 3000)
547		return (1);			/* It's an A3000 */
548	if (machineid >> 16)
549		return (0);			/* It's not an A3000 */
550	/* Machine type is unknown, so try to guess it */
551	/* where is fastram on the A4000 ?? */
552	/* if fastram is below 0x07000000, assume it's not an A3000 */
553	if (boot_fphystart < 0x07000000)
554		return(0);
555	/*
556	 * OK, fastram starts at or above 0x07000000, check specific
557	 * machines
558	 */
559	for (sc = 0; sc < ncfdev; sc++) {
560		switch (cfdev[sc].rom.manid) {
561		case 2026:		/* Progressive Peripherals, Inc */
562			switch (cfdev[sc].rom.prodid) {
563			case 0:		/* PPI Mercury - A3000 */
564			case 1:		/* PP&S A3000 '040 */
565				return(1);
566			case 150:	/* PPI Zeus - it's an A2000 */
567			case 105:	/* PP&S A2000 '040 */
568			case 187:	/* PP&S A500 '040 */
569				return(0);
570			}
571			break;
572
573		case 2112:			/* IVS */
574			switch (cfdev[sc].rom.prodid) {
575			case 242:
576				return(0);	/* A2000 accelerator? */
577			}
578			break;
579		}
580	}
581	return (a3000_flag);		/* XXX let flag tell now */
582}
583
584int
585is_a4000(void)
586{
587	if ((machineid >> 16) == 4000)
588		return (1);		/* It's an A4000 */
589	if ((machineid >> 16) == 1200)
590		return (0);		/* It's an A1200, so not A4000 */
591#ifdef DRACO
592	if (is_draco())
593		return (0);
594#endif
595	/* Do I need this any more? */
596	if ((custom.deniseid & 0xff) == 0xf8)
597		return (1);
598#ifdef DEBUG
599	if (a4000_flag)
600		printf("Denise ID = %04x\n", (unsigned short)custom.deniseid);
601#endif
602	if (machineid >> 16)
603		return (0);		/* It's not an A4000 */
604	return (a4000_flag);		/* Machine type not set */
605}
606
607int
608is_a1200(void)
609{
610	if ((machineid >> 16) == 1200)
611		return (1);		/* It's an A1200 */
612	return (0);			/* Machine type not set */
613}
614
615int
616is_a600(void)
617{
618	if ((machineid >> 16) == 600)
619		return (1);		/* It's an A600 */
620	return (0);			/* Machine type not set */
621}
622
623void
624device_register(device_t dev, void *aux)
625{
626#ifdef P5PB_CONSOLE
627	p5pb_device_register(dev, aux);
628#endif /* P5PB_CONSOLE */
629}
630