autoconf.c revision 1.118 
1/*	$NetBSD: autoconf.c,v 1.118 2021/04/24 23:36:24 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 1.118 2021/04/24 23:36:24 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{
167	struct device temp;
168	cfdata_t cf;
169	const struct cfattach *ca;
170
171	if (amiga_realconfig)
172		return(config_found(parent, aux, pfn, CFARG_EOL) != NULL);
173
174	if (parent == NULL) {
175		memset(&temp, 0, sizeof temp);
176		parent = &temp;
177	}
178
179	parent->dv_cfdata = pcfp;
180	parent->dv_cfdriver = config_cfdriver_lookup(pcfp->cf_name);
181	parent->dv_unit = pcfp->cf_unit;
182
183	if ((cf = config_search(parent, aux, CFARG_EOL)) != NULL) {
184		ca = config_cfattach_lookup(cf->cf_name, cf->cf_atname);
185		if (ca != NULL) {
186			(*ca->ca_attach)(parent, NULL, aux);
187			parent->dv_cfdata = NULL;
188			return(1);
189		}
190	}
191	parent->dv_cfdata = NULL;
192	return(0);
193}
194
195/*
196 * this function needs to get enough configured to do a console
197 * basically this means start attaching the grfxx's that support
198 * the console. Kinda hacky but it works.
199 */
200void
201config_console(void)
202{
203	cfdata_t cf;
204
205	config_init();
206
207	/*
208	 * we need mainbus' cfdata.
209	 */
210	cf = config_rootsearch(NULL, "mainbus", NULL);
211	if (cf == NULL) {
212		panic("no mainbus");
213	}
214
215	/*
216	 * delay clock calibration.
217	 */
218	amiga_config_found(cf, NULL, __UNCONST("clock"), NULL);
219
220	/*
221	 * internal grf.
222	 */
223#ifdef DRACO
224	if (!(is_draco()))
225#endif
226		amiga_config_found(cf, NULL, __UNCONST("grfcc"), NULL);
227
228	/*
229	 * zbus knows when its not for real and will
230	 * only configure the appropriate hardware
231	 */
232	amiga_config_found(cf, NULL, __UNCONST("zbus"), NULL);
233}
234
235/*
236 * mainbus driver
237 */
238CFATTACH_DECL_NEW(mainbus, 0,
239    mbmatch, mbattach, NULL, NULL);
240
241int
242mbmatch(device_t parent, cfdata_t cf, void *aux)
243{
244#if 0	/*
245	 * XXX is this right? but we need to be found twice
246	 * (early console init hack)
247	 */
248	static int mainbus_matched = 0;
249
250	/* Allow only one instance. */
251	if (mainbus_matched)
252		return (0);
253
254	mainbus_matched = 1;
255#endif
256	return (1);
257}
258
259/*
260 * "find" all the things that should be there.
261 */
262void
263mbattach(device_t parent, device_t self, void *aux)
264{
265	printf("\n");
266	config_found(self, __UNCONST("clock"), simple_devprint, CFARG_EOL);
267	if (is_a3000() || is_a4000()) {
268		config_found(self, __UNCONST("a34kbbc"), simple_devprint,
269		    CFARG_EOL);
270	} else
271#ifdef DRACO
272	if (!is_draco())
273#endif
274	{
275		config_found(self, __UNCONST("a2kbbc"), simple_devprint,
276		    CFARG_EOL);
277	}
278#ifdef DRACO
279	if (is_draco()) {
280		config_found(self, __UNCONST("drbbc"), simple_devprint,
281		    CFARG_EOL);
282		config_found(self, __UNCONST("kbd"), simple_devprint,
283		    CFARG_EOL);
284		config_found(self, __UNCONST("drsc"), simple_devprint,
285		    CFARG_EOL);
286		config_found(self, __UNCONST("drsupio"), simple_devprint,
287		    CFARG_EOL);
288	} else
289#endif
290	{
291		config_found(self, __UNCONST("ser"), simple_devprint,
292		    CFARG_EOL);
293		config_found(self, __UNCONST("par"), simple_devprint,
294		    CFARG_EOL);
295		config_found(self, __UNCONST("kbd"), simple_devprint,
296		    CFARG_EOL);
297		config_found(self, __UNCONST("ms"), simple_devprint,
298		    CFARG_EOL);
299		config_found(self, __UNCONST("grfcc"), simple_devprint,
300		    CFARG_EOL);
301		config_found(self, __UNCONST("amidisplaycc"), simple_devprint,
302		    CFARG_EOL);
303		config_found(self, __UNCONST("fdc"), simple_devprint,
304		    CFARG_EOL);
305	}
306	if (is_a4000() || is_a1200() || is_a600())
307		config_found(self, __UNCONST("wdc"), simple_devprint,
308		    CFARG_EOL);
309	if (is_a4000())			/* Try to configure A4000T SCSI */
310		config_found(self, __UNCONST("afsc"), simple_devprint,
311		    CFARG_EOL);
312	if (is_a3000())
313		config_found(self, __UNCONST("ahsc"), simple_devprint,
314		    CFARG_EOL);
315	if (is_a600() || is_a1200())
316		config_found(self, __UNCONST("pccard"), simple_devprint,
317		    CFARG_EOL);
318	if (is_a1200())
319		config_found(self, __UNCONST("a1k2cp"), simple_devprint,
320		    CFARG_EOL);
321#ifdef DRACO
322	if (!is_draco())
323#endif
324		config_found(self, __UNCONST("aucc"), simple_devprint,
325		    CFARG_EOL);
326
327#if NACAFH > 0
328	if (!is_a600() && !is_a1200() && !is_a3000() && !is_a4000())
329		if (acafh_mbattach_probe() == true)
330			config_found(self, __UNCONST("acafh"), simple_devprint,
331			    CFARG_EOL);
332#endif
333
334	config_found(self, __UNCONST("zbus"), simple_devprint, CFARG_EOL);
335}
336
337int
338mbprint(void *aux, const char *pnp)
339{
340	if (pnp)
341		aprint_normal("%s at %s", (char *)aux, pnp);
342	return(UNCONF);
343}
344
345/*
346 * The system will assign the "booted device" indicator (and thus
347 * rootdev if rootspec is wildcarded) to the first partition 'a'
348 * in preference of boot.  However, it does walk unit backwards
349 * to remain compatible with the old Amiga method of picking the
350 * last root found.
351 */
352#include <sys/fcntl.h>		/* XXXX and all that uses it */
353#include <sys/proc.h>		/* XXXX and all that uses it */
354
355#include "fd.h"
356#include "sd.h"
357#include "cd.h"
358#include "wd.h"
359
360#if NFD > 0
361extern  struct cfdriver fd_cd;
362extern	const struct bdevsw fd_bdevsw;
363#endif
364#if NSD > 0
365extern  struct cfdriver sd_cd;
366extern	const struct bdevsw sd_bdevsw;
367#endif
368#if NCD > 0
369extern  struct cfdriver cd_cd;
370extern	const struct bdevsw cd_bdevsw;
371#endif
372#if NWD > 0
373extern  struct cfdriver wd_cd;
374extern	const struct bdevsw wd_bdevsw;
375#endif
376
377struct cfdriver *genericconf[] = {
378#if NFD > 0
379	&fd_cd,
380#endif
381#if NSD > 0
382	&sd_cd,
383#endif
384#if NWD > 0
385	&wd_cd,
386#endif
387#if NCD > 0
388	&cd_cd,
389#endif
390	NULL,
391};
392
393void
394findroot(void)
395{
396	struct disk *dkp;
397	struct partition *pp;
398	device_t *devs;
399	int i, maj, unit;
400	const struct bdevsw *bdp;
401
402#if NSD > 0
403	/*
404	 * If we have the boot partition offset (boot_partition), try
405	 * to locate the device corresponding to that partition.
406	 */
407#ifdef DEBUG_KERNEL_START
408	printf("Boot partition offset is %ld\n", boot_partition);
409#endif
410	if (boot_partition != 0) {
411
412		for (unit = 0; unit < sd_cd.cd_ndevs; ++unit) {
413#ifdef DEBUG_KERNEL_START
414			printf("probing for sd%d\n", unit);
415#endif
416			if (device_lookup(&sd_cd,unit) == NULL)
417				continue;
418
419			/*
420			 * Find the disk corresponding to the current
421			 * device.
422			 */
423			devs = sd_cd.cd_devs;
424			if ((dkp = disk_find(device_xname(device_lookup(&sd_cd, unit)))) == NULL)
425				continue;
426
427			if (dkp->dk_driver == NULL ||
428			    dkp->dk_driver->d_strategy == NULL)
429				continue;
430			bdp = &sd_bdevsw;
431			maj = bdevsw_lookup_major(bdp);
432			if ((*bdp->d_open)(MAKEDISKDEV(maj, unit, RAW_PART),
433			    FREAD | FNONBLOCK, 0, curlwp))
434				continue;
435			(*bdp->d_close)(MAKEDISKDEV(maj, unit, RAW_PART),
436			    FREAD | FNONBLOCK, 0, curlwp);
437			pp = &dkp->dk_label->d_partitions[0];
438			for (i = 0; i < dkp->dk_label->d_npartitions;
439			    i++, pp++) {
440#ifdef DEBUG_KERNEL_START
441				printf("sd%d%c type %d offset %d size %d\n",
442					unit, i+'a', pp->p_fstype,
443					pp->p_offset, pp->p_size);
444#endif
445				if (pp->p_size == 0 ||
446				    (pp->p_fstype != FS_BSDFFS &&
447				    pp->p_fstype != FS_SWAP))
448					continue;
449				if (pp->p_offset == boot_partition) {
450					if (booted_device == NULL) {
451						booted_device = devs[unit];
452						booted_partition = i;
453					} else
454						printf("Ambiguous boot device\n");
455				}
456			}
457		}
458	}
459	if (booted_device != NULL)
460		return;		/* we found the boot device */
461#endif
462
463	for (i = 0; genericconf[i] != NULL; i++) {
464		for (unit = genericconf[i]->cd_ndevs - 1; unit >= 0; unit--) {
465			if (genericconf[i]->cd_devs[unit] == NULL)
466				continue;
467
468			/*
469			 * Find the disk structure corresponding to the
470			 * current device.
471			 */
472			devs = (device_t *)genericconf[i]->cd_devs;
473			if ((dkp = disk_find(device_xname(devs[unit]))) == NULL)
474				continue;
475
476			if (dkp->dk_driver == NULL ||
477			    dkp->dk_driver->d_strategy == NULL)
478				continue;
479
480			bdp = NULL;
481#if NFD > 0
482			if (fd_bdevsw.d_strategy == dkp->dk_driver->d_strategy)
483				bdp = &fd_bdevsw;
484#endif
485#if NSD > 0
486			if (sd_bdevsw.d_strategy == dkp->dk_driver->d_strategy)
487				bdp = &sd_bdevsw;
488#endif
489#if NWD > 0
490			if (wd_bdevsw.d_strategy == dkp->dk_driver->d_strategy)
491				bdp = &wd_bdevsw;
492#endif
493#if NCD > 0
494			if (cd_bdevsw.d_strategy == dkp->dk_driver->d_strategy)
495				bdp = &cd_bdevsw;
496#endif
497#ifdef DIAGNOSTIC
498			if (bdp == NULL)
499				panic("findroot: impossible");
500#endif
501			maj = bdevsw_lookup_major(bdp);
502
503			/* Open disk; forces read of disklabel. */
504			if ((*bdp->d_open)(MAKEDISKDEV(maj, unit, RAW_PART),
505				FREAD|FNONBLOCK, 0, &lwp0))
506				continue;
507			(void)(*bdp->d_close)(MAKEDISKDEV(maj, unit, RAW_PART),
508				FREAD|FNONBLOCK, 0, &lwp0);
509
510			pp = &dkp->dk_label->d_partitions[0];
511			if (pp->p_size != 0 && pp->p_fstype == FS_BSDFFS) {
512				booted_device = devs[unit];
513				booted_partition = 0;
514				return;
515			}
516		}
517	}
518}
519
520/*
521 * Try to determine, of this machine is an A3000, which has a builtin
522 * realtime clock and scsi controller, so that this hardware is only
523 * included as "configured" if this IS an A3000
524 */
525
526int a3000_flag = 1;		/* patchable */
527#ifdef A4000
528int a4000_flag = 1;		/* patchable - default to A4000 */
529#else
530int a4000_flag = 0;		/* patchable */
531#endif
532
533int
534is_a3000(void)
535{
536	/* this is a dirty kludge.. but how do you do this RIGHT ? :-) */
537	extern long boot_fphystart;
538	short sc;
539
540	if ((machineid >> 16) == 3000)
541		return (1);			/* It's an A3000 */
542	if (machineid >> 16)
543		return (0);			/* It's not an A3000 */
544	/* Machine type is unknown, so try to guess it */
545	/* where is fastram on the A4000 ?? */
546	/* if fastram is below 0x07000000, assume it's not an A3000 */
547	if (boot_fphystart < 0x07000000)
548		return(0);
549	/*
550	 * OK, fastram starts at or above 0x07000000, check specific
551	 * machines
552	 */
553	for (sc = 0; sc < ncfdev; sc++) {
554		switch (cfdev[sc].rom.manid) {
555		case 2026:		/* Progressive Peripherals, Inc */
556			switch (cfdev[sc].rom.prodid) {
557			case 0:		/* PPI Mercury - A3000 */
558			case 1:		/* PP&S A3000 '040 */
559				return(1);
560			case 150:	/* PPI Zeus - it's an A2000 */
561			case 105:	/* PP&S A2000 '040 */
562			case 187:	/* PP&S A500 '040 */
563				return(0);
564			}
565			break;
566
567		case 2112:			/* IVS */
568			switch (cfdev[sc].rom.prodid) {
569			case 242:
570				return(0);	/* A2000 accelerator? */
571			}
572			break;
573		}
574	}
575	return (a3000_flag);		/* XXX let flag tell now */
576}
577
578int
579is_a4000(void)
580{
581	if ((machineid >> 16) == 4000)
582		return (1);		/* It's an A4000 */
583	if ((machineid >> 16) == 1200)
584		return (0);		/* It's an A1200, so not A4000 */
585#ifdef DRACO
586	if (is_draco())
587		return (0);
588#endif
589	/* Do I need this any more? */
590	if ((custom.deniseid & 0xff) == 0xf8)
591		return (1);
592#ifdef DEBUG
593	if (a4000_flag)
594		printf("Denise ID = %04x\n", (unsigned short)custom.deniseid);
595#endif
596	if (machineid >> 16)
597		return (0);		/* It's not an A4000 */
598	return (a4000_flag);		/* Machine type not set */
599}
600
601int
602is_a1200(void)
603{
604	if ((machineid >> 16) == 1200)
605		return (1);		/* It's an A1200 */
606	return (0);			/* Machine type not set */
607}
608
609int
610is_a600(void)
611{
612	if ((machineid >> 16) == 600)
613		return (1);		/* It's an A600 */
614	return (0);			/* Machine type not set */
615}
616
617void
618device_register(device_t dev, void *aux)
619{
620#ifdef P5PB_CONSOLE
621	p5pb_device_register(dev, aux);
622#endif /* P5PB_CONSOLE */
623}
624