autoconf.c revision 1.115 
1/*	$NetBSD: autoconf.c,v 1.115 2013/12/22 02:21:51 rkujawa 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 1.115 2013/12/22 02:21:51 rkujawa 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 "opt_acafh.h"
57
58static void findroot(void);
59void mbattach(device_t, device_t, void *);
60int mbprint(void *, const char *);
61int mbmatch(device_t, cfdata_t, void *);
62
63#include <sys/kernel.h>
64
65u_long boot_partition;
66
67int amiga_realconfig;
68
69/*
70 * called at boot time, configure all devices on system
71 */
72void
73cpu_configure(void)
74{
75	int s;
76#ifdef DEBUG_KERNEL_START
77	int i;
78#endif
79
80	/*
81	 * this is the real thing baby (i.e. not console init)
82	 */
83	amiga_realconfig = 1;
84#ifdef DRACO
85	if (is_draco()) {
86		*draco_intena &= ~DRIRQ_GLOBAL;
87	} else
88#endif
89	custom.intena = INTF_INTEN;
90	s = splhigh();
91
92	if (config_rootfound("mainbus", NULL) == NULL)
93		panic("no mainbus found");
94
95#ifdef DEBUG_KERNEL_START
96	printf("survived autoconf, going to enable interrupts\n");
97#endif
98
99#ifdef DRACO
100	if (is_draco()) {
101		*draco_intena |= DRIRQ_GLOBAL;
102		/* softints always enabled */
103	} else
104#endif
105	{
106		custom.intena = INTF_SETCLR | INTF_INTEN;
107
108		/* also enable hardware aided software interrupts */
109		custom.intena = INTF_SETCLR | INTF_SOFTINT;
110	}
111#ifdef DEBUG_KERNEL_START
112	for (i=splhigh(); i>=s ;i-=0x100) {
113		splx(i);
114		printf("%d...", (i>>8) & 7);
115	}
116	printf("survived interrupt enable\n");
117#else
118	splx(s);
119#endif
120#ifdef DEBUG_KERNEL_START
121	printf("survived configure...\n");
122#endif
123}
124
125void
126cpu_rootconf(void)
127{
128	findroot();
129#ifdef DEBUG_KERNEL_START
130	printf("survived findroot()\n");
131#endif
132	rootconf();
133}
134
135/*ARGSUSED*/
136int
137simple_devprint(void *aux, const char *pnp)
138{
139	return(QUIET);
140}
141
142int
143matchname(const char *fp, const char *sp)
144{
145	int len;
146
147	len = strlen(fp);
148	if (strlen(sp) != len)
149		return(0);
150	if (memcmp(fp, sp, len) == 0)
151		return(1);
152	return(0);
153}
154
155/*
156 * use config_search_ia to find appropriate device, then call that device
157 * directly with NULL device variable storage.  A device can then
158 * always tell the difference betwean the real and console init
159 * by checking for NULL.
160 */
161int
162amiga_config_found(cfdata_t pcfp, device_t parent, void *aux, cfprint_t pfn)
163{
164	struct device temp;
165	cfdata_t cf;
166	const struct cfattach *ca;
167
168	if (amiga_realconfig)
169		return(config_found(parent, aux, pfn) != NULL);
170
171	if (parent == NULL) {
172		memset(&temp, 0, sizeof temp);
173		parent = &temp;
174	}
175
176	parent->dv_cfdata = pcfp;
177	parent->dv_cfdriver = config_cfdriver_lookup(pcfp->cf_name);
178	parent->dv_unit = pcfp->cf_unit;
179
180	if ((cf = config_search_ia(NULL, parent, NULL, aux)) != NULL) {
181		ca = config_cfattach_lookup(cf->cf_name, cf->cf_atname);
182		if (ca != NULL) {
183			(*ca->ca_attach)(parent, NULL, aux);
184			parent->dv_cfdata = NULL;
185			return(1);
186		}
187	}
188	parent->dv_cfdata = NULL;
189	return(0);
190}
191
192/*
193 * this function needs to get enough configured to do a console
194 * basically this means start attaching the grfxx's that support
195 * the console. Kinda hacky but it works.
196 */
197void
198config_console(void)
199{
200	cfdata_t cf;
201
202	config_init();
203
204	/*
205	 * we need mainbus' cfdata.
206	 */
207	cf = config_rootsearch(NULL, "mainbus", NULL);
208	if (cf == NULL) {
209		panic("no mainbus");
210	}
211
212	/*
213	 * delay clock calibration.
214	 */
215	amiga_config_found(cf, NULL, __UNCONST("clock"), NULL);
216
217	/*
218	 * internal grf.
219	 */
220#ifdef DRACO
221	if (!(is_draco()))
222#endif
223		amiga_config_found(cf, NULL, __UNCONST("grfcc"), NULL);
224
225	/*
226	 * zbus knows when its not for real and will
227	 * only configure the appropriate hardware
228	 */
229	amiga_config_found(cf, NULL, __UNCONST("zbus"), NULL);
230}
231
232/*
233 * mainbus driver
234 */
235CFATTACH_DECL_NEW(mainbus, 0,
236    mbmatch, mbattach, NULL, NULL);
237
238int
239mbmatch(device_t parent, cfdata_t cf, void *aux)
240{
241#if 0	/*
242	 * XXX is this right? but we need to be found twice
243	 * (early console init hack)
244	 */
245	static int mainbus_matched = 0;
246
247	/* Allow only one instance. */
248	if (mainbus_matched)
249		return (0);
250
251	mainbus_matched = 1;
252#endif
253	return (1);
254}
255
256/*
257 * "find" all the things that should be there.
258 */
259void
260mbattach(device_t parent, device_t self, void *aux)
261{
262	printf("\n");
263	config_found(self, __UNCONST("clock"), simple_devprint);
264	if (is_a3000() || is_a4000()) {
265		config_found(self, __UNCONST("a34kbbc"), simple_devprint);
266	} else
267#ifdef DRACO
268	if (!is_draco())
269#endif
270	{
271		config_found(self, __UNCONST("a2kbbc"), simple_devprint);
272	}
273#ifdef DRACO
274	if (is_draco()) {
275		config_found(self, __UNCONST("drbbc"), simple_devprint);
276		config_found(self, __UNCONST("kbd"), simple_devprint);
277		config_found(self, __UNCONST("drsc"), simple_devprint);
278		config_found(self, __UNCONST("drsupio"), simple_devprint);
279	} else
280#endif
281	{
282		config_found(self, __UNCONST("ser"), simple_devprint);
283		config_found(self, __UNCONST("par"), simple_devprint);
284		config_found(self, __UNCONST("kbd"), simple_devprint);
285		config_found(self, __UNCONST("ms"), simple_devprint);
286		config_found(self, __UNCONST("grfcc"), simple_devprint);
287		config_found(self, __UNCONST("amidisplaycc"), simple_devprint);
288		config_found(self, __UNCONST("fdc"), simple_devprint);
289	}
290	if (is_a4000() || is_a1200() || is_a600())
291		config_found(self, __UNCONST("wdc"), simple_devprint);
292	if (is_a4000())			/* Try to configure A4000T SCSI */
293		config_found(self, __UNCONST("afsc"), simple_devprint);
294	if (is_a3000())
295		config_found(self, __UNCONST("ahsc"), simple_devprint);
296	if (is_a600() || is_a1200())
297		config_found(self, __UNCONST("pccard"), simple_devprint);
298	if (is_a1200())
299		config_found(self, __UNCONST("a1k2cp"), simple_devprint);
300#ifdef DRACO
301	if (!is_draco())
302#endif
303		config_found(self, __UNCONST("aucc"), simple_devprint);
304
305#ifdef ACA500_SUPPORT
306	config_found(self, __UNCONST("acafh"), simple_devprint);
307#endif
308
309	config_found(self, __UNCONST("zbus"), simple_devprint);
310}
311
312int
313mbprint(void *aux, const char *pnp)
314{
315	if (pnp)
316		aprint_normal("%s at %s", (char *)aux, pnp);
317	return(UNCONF);
318}
319
320/*
321 * The system will assign the "booted device" indicator (and thus
322 * rootdev if rootspec is wildcarded) to the first partition 'a'
323 * in preference of boot.  However, it does walk unit backwards
324 * to remain compatible with the old Amiga method of picking the
325 * last root found.
326 */
327#include <sys/fcntl.h>		/* XXXX and all that uses it */
328#include <sys/proc.h>		/* XXXX and all that uses it */
329
330#include "fd.h"
331#include "sd.h"
332#include "cd.h"
333#include "wd.h"
334
335#if NFD > 0
336extern  struct cfdriver fd_cd;
337extern	const struct bdevsw fd_bdevsw;
338#endif
339#if NSD > 0
340extern  struct cfdriver sd_cd;
341extern	const struct bdevsw sd_bdevsw;
342#endif
343#if NCD > 0
344extern  struct cfdriver cd_cd;
345extern	const struct bdevsw cd_bdevsw;
346#endif
347#if NWD > 0
348extern  struct cfdriver wd_cd;
349extern	const struct bdevsw wd_bdevsw;
350#endif
351
352struct cfdriver *genericconf[] = {
353#if NFD > 0
354	&fd_cd,
355#endif
356#if NSD > 0
357	&sd_cd,
358#endif
359#if NWD > 0
360	&wd_cd,
361#endif
362#if NCD > 0
363	&cd_cd,
364#endif
365	NULL,
366};
367
368void
369findroot(void)
370{
371	struct disk *dkp;
372	struct partition *pp;
373	device_t *devs;
374	int i, maj, unit;
375	const struct bdevsw *bdp;
376
377#if NSD > 0
378	/*
379	 * If we have the boot partition offset (boot_partition), try
380	 * to locate the device corresponding to that partition.
381	 */
382#ifdef DEBUG_KERNEL_START
383	printf("Boot partition offset is %ld\n", boot_partition);
384#endif
385	if (boot_partition != 0) {
386
387		for (unit = 0; unit < sd_cd.cd_ndevs; ++unit) {
388#ifdef DEBUG_KERNEL_START
389			printf("probing for sd%d\n", unit);
390#endif
391			if (device_lookup(&sd_cd,unit) == NULL)
392				continue;
393
394			/*
395			 * Find the disk corresponding to the current
396			 * device.
397			 */
398			devs = sd_cd.cd_devs;
399			if ((dkp = disk_find(device_xname(device_lookup(&sd_cd, unit)))) == NULL)
400				continue;
401
402			if (dkp->dk_driver == NULL ||
403			    dkp->dk_driver->d_strategy == NULL)
404				continue;
405			bdp = &sd_bdevsw;
406			maj = bdevsw_lookup_major(bdp);
407			if ((*bdp->d_open)(MAKEDISKDEV(maj, unit, RAW_PART),
408			    FREAD | FNONBLOCK, 0, curlwp))
409				continue;
410			(*bdp->d_close)(MAKEDISKDEV(maj, unit, RAW_PART),
411			    FREAD | FNONBLOCK, 0, curlwp);
412			pp = &dkp->dk_label->d_partitions[0];
413			for (i = 0; i < dkp->dk_label->d_npartitions;
414			    i++, pp++) {
415#ifdef DEBUG_KERNEL_START
416				printf("sd%d%c type %d offset %d size %d\n",
417					unit, i+'a', pp->p_fstype,
418					pp->p_offset, pp->p_size);
419#endif
420				if (pp->p_size == 0 ||
421				    (pp->p_fstype != FS_BSDFFS &&
422				    pp->p_fstype != FS_SWAP))
423					continue;
424				if (pp->p_offset == boot_partition) {
425					if (booted_device == NULL) {
426						booted_device = devs[unit];
427						booted_partition = i;
428					} else
429						printf("Ambiguous boot device\n");
430				}
431			}
432		}
433	}
434	if (booted_device != NULL)
435		return;		/* we found the boot device */
436#endif
437
438	for (i = 0; genericconf[i] != NULL; i++) {
439		for (unit = genericconf[i]->cd_ndevs - 1; unit >= 0; unit--) {
440			if (genericconf[i]->cd_devs[unit] == NULL)
441				continue;
442
443			/*
444			 * Find the disk structure corresponding to the
445			 * current device.
446			 */
447			devs = (device_t *)genericconf[i]->cd_devs;
448			if ((dkp = disk_find(device_xname(devs[unit]))) == NULL)
449				continue;
450
451			if (dkp->dk_driver == NULL ||
452			    dkp->dk_driver->d_strategy == NULL)
453				continue;
454
455			bdp = NULL;
456#if NFD > 0
457			if (fd_bdevsw.d_strategy == dkp->dk_driver->d_strategy)
458				bdp = &fd_bdevsw;
459#endif
460#if NSD > 0
461			if (sd_bdevsw.d_strategy == dkp->dk_driver->d_strategy)
462				bdp = &sd_bdevsw;
463#endif
464#if NWD > 0
465			if (wd_bdevsw.d_strategy == dkp->dk_driver->d_strategy)
466				bdp = &wd_bdevsw;
467#endif
468#if NCD > 0
469			if (cd_bdevsw.d_strategy == dkp->dk_driver->d_strategy)
470				bdp = &cd_bdevsw;
471#endif
472#ifdef DIAGNOSTIC
473			if (bdp == NULL)
474				panic("findroot: impossible");
475#endif
476			maj = bdevsw_lookup_major(bdp);
477
478			/* Open disk; forces read of disklabel. */
479			if ((*bdp->d_open)(MAKEDISKDEV(maj,
480			    unit, 0), FREAD|FNONBLOCK, 0, &lwp0))
481				continue;
482			(void)(*bdp->d_close)(MAKEDISKDEV(maj,
483			    unit, 0), FREAD|FNONBLOCK, 0, &lwp0);
484
485			pp = &dkp->dk_label->d_partitions[0];
486			if (pp->p_size != 0 && pp->p_fstype == FS_BSDFFS) {
487				booted_device = devs[unit];
488				booted_partition = 0;
489				return;
490			}
491		}
492	}
493}
494
495/*
496 * Try to determine, of this machine is an A3000, which has a builtin
497 * realtime clock and scsi controller, so that this hardware is only
498 * included as "configured" if this IS an A3000
499 */
500
501int a3000_flag = 1;		/* patchable */
502#ifdef A4000
503int a4000_flag = 1;		/* patchable - default to A4000 */
504#else
505int a4000_flag = 0;		/* patchable */
506#endif
507
508int
509is_a3000(void)
510{
511	/* this is a dirty kludge.. but how do you do this RIGHT ? :-) */
512	extern long boot_fphystart;
513	short sc;
514
515	if ((machineid >> 16) == 3000)
516		return (1);			/* It's an A3000 */
517	if (machineid >> 16)
518		return (0);			/* It's not an A3000 */
519	/* Machine type is unknown, so try to guess it */
520	/* where is fastram on the A4000 ?? */
521	/* if fastram is below 0x07000000, assume it's not an A3000 */
522	if (boot_fphystart < 0x07000000)
523		return(0);
524	/*
525	 * OK, fastram starts at or above 0x07000000, check specific
526	 * machines
527	 */
528	for (sc = 0; sc < ncfdev; sc++) {
529		switch (cfdev[sc].rom.manid) {
530		case 2026:		/* Progressive Peripherals, Inc */
531			switch (cfdev[sc].rom.prodid) {
532			case 0:		/* PPI Mercury - A3000 */
533			case 1:		/* PP&S A3000 '040 */
534				return(1);
535			case 150:	/* PPI Zeus - it's an A2000 */
536			case 105:	/* PP&S A2000 '040 */
537			case 187:	/* PP&S A500 '040 */
538				return(0);
539			}
540			break;
541
542		case 2112:			/* IVS */
543			switch (cfdev[sc].rom.prodid) {
544			case 242:
545				return(0);	/* A2000 accelerator? */
546			}
547			break;
548		}
549	}
550	return (a3000_flag);		/* XXX let flag tell now */
551}
552
553int
554is_a4000(void)
555{
556	if ((machineid >> 16) == 4000)
557		return (1);		/* It's an A4000 */
558	if ((machineid >> 16) == 1200)
559		return (0);		/* It's an A1200, so not A4000 */
560#ifdef DRACO
561	if (is_draco())
562		return (0);
563#endif
564	/* Do I need this any more? */
565	if ((custom.deniseid & 0xff) == 0xf8)
566		return (1);
567#ifdef DEBUG
568	if (a4000_flag)
569		printf("Denise ID = %04x\n", (unsigned short)custom.deniseid);
570#endif
571	if (machineid >> 16)
572		return (0);		/* It's not an A4000 */
573	return (a4000_flag);		/* Machine type not set */
574}
575
576int
577is_a1200(void)
578{
579	if ((machineid >> 16) == 1200)
580		return (1);		/* It's an A1200 */
581	return (0);			/* Machine type not set */
582}
583
584int
585is_a600(void)
586{
587	if ((machineid >> 16) == 600)
588		return (1);		/* It's an A600 */
589	return (0);			/* Machine type not set */
590}
591
592void
593device_register(device_t dev, void *aux)
594{
595#ifdef P5PB_CONSOLE
596	p5pb_device_register(dev, aux);
597#endif /* P5PB_CONSOLE */
598}
599