autoconf.c revision 1.107 
1/*	$NetBSD: autoconf.c,v 1.107 2011/06/03 00:52:22 matt 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 1.107 2011/06/03 00:52:22 matt 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
53static void findroot(void);
54void mbattach(device_t, device_t, void *);
55int mbprint(void *, const char *);
56int mbmatch(device_t, cfdata_t, void *);
57
58#include <sys/kernel.h>
59
60u_long boot_partition;
61
62int amiga_realconfig;
63
64/*
65 * called at boot time, configure all devices on system
66 */
67void
68cpu_configure(void)
69{
70	int s;
71#ifdef DEBUG_KERNEL_START
72	int i;
73#endif
74
75	/*
76	 * this is the real thing baby (i.e. not console init)
77	 */
78	amiga_realconfig = 1;
79#ifdef DRACO
80	if (is_draco()) {
81		*draco_intena &= ~DRIRQ_GLOBAL;
82	} else
83#endif
84	custom.intena = INTF_INTEN;
85	s = splhigh();
86
87	if (config_rootfound("mainbus", NULL) == NULL)
88		panic("no mainbus found");
89
90#ifdef DEBUG_KERNEL_START
91	printf("survived autoconf, going to enable interrupts\n");
92#endif
93
94#ifdef DRACO
95	if (is_draco()) {
96		*draco_intena |= DRIRQ_GLOBAL;
97		/* softints always enabled */
98	} else
99#endif
100	{
101		custom.intena = INTF_SETCLR | INTF_INTEN;
102
103		/* also enable hardware aided software interrupts */
104		custom.intena = INTF_SETCLR | INTF_SOFTINT;
105	}
106#ifdef DEBUG_KERNEL_START
107	for (i=splhigh(); i>=s ;i-=0x100) {
108		splx(i);
109		printf("%d...", (i>>8) & 7);
110	}
111	printf("survived interrupt enable\n");
112#else
113	splx(s);
114#endif
115#ifdef DEBUG_KERNEL_START
116	printf("survived configure...\n");
117#endif
118}
119
120void
121cpu_rootconf(void)
122{
123	findroot();
124#ifdef DEBUG_KERNEL_START
125	printf("survived findroot()\n");
126#endif
127	setroot(booted_device, booted_partition);
128#ifdef DEBUG_KERNEL_START
129	printf("survived setroot()\n");
130#endif
131}
132
133/*ARGSUSED*/
134int
135simple_devprint(void *auxp, const char *pnp)
136{
137	return(QUIET);
138}
139
140int
141matchname(const char *fp, const char *sp)
142{
143	int len;
144
145	len = strlen(fp);
146	if (strlen(sp) != len)
147		return(0);
148	if (memcmp(fp, sp, len) == 0)
149		return(1);
150	return(0);
151}
152
153/*
154 * use config_search_ia to find appropriate device, then call that device
155 * directly with NULL device variable storage.  A device can then
156 * always tell the difference betwean the real and console init
157 * by checking for NULL.
158 */
159int
160amiga_config_found(cfdata_t pcfp, device_t pdp, void *auxp, cfprint_t pfn)
161{
162	struct device temp;
163	cfdata_t cf;
164	const struct cfattach *ca;
165
166	if (amiga_realconfig)
167		return(config_found(pdp, auxp, pfn) != NULL);
168
169	if (pdp == NULL) {
170		memset(&temp, 0, sizeof temp);
171		pdp = &temp;
172	}
173
174	pdp->dv_cfdata = pcfp;
175	pdp->dv_cfdriver = config_cfdriver_lookup(pcfp->cf_name);
176	pdp->dv_unit = pcfp->cf_unit;
177
178	if ((cf = config_search_ia(NULL, pdp, NULL, auxp)) != NULL) {
179		ca = config_cfattach_lookup(cf->cf_name, cf->cf_atname);
180		if (ca != NULL) {
181			(*ca->ca_attach)(pdp, NULL, auxp);
182			pdp->dv_cfdata = NULL;
183			return(1);
184		}
185	}
186	pdp->dv_cfdata = NULL;
187	return(0);
188}
189
190/*
191 * this function needs to get enough configured to do a console
192 * basically this means start attaching the grfxx's that support
193 * the console. Kinda hacky but it works.
194 */
195void
196config_console(void)
197{
198	cfdata_t cf;
199
200	config_init();
201
202	/*
203	 * we need mainbus' cfdata.
204	 */
205	cf = config_rootsearch(NULL, "mainbus", NULL);
206	if (cf == NULL) {
207		panic("no mainbus");
208	}
209	/*
210	 * delay clock calibration.
211	 */
212	amiga_config_found(cf, NULL, __UNCONST("clock"), NULL);
213
214	/*
215	 * internal grf.
216	 */
217#ifdef DRACO
218	if (!(is_draco()))
219#endif
220		amiga_config_found(cf, NULL, __UNCONST("grfcc"), NULL);
221
222	/*
223	 * zbus knows when its not for real and will
224	 * only configure the appropriate hardware
225	 */
226	amiga_config_found(cf, NULL, __UNCONST("zbus"), NULL);
227}
228
229/*
230 * mainbus driver
231 */
232CFATTACH_DECL_NEW(mainbus, 0,
233    mbmatch, mbattach, NULL, NULL);
234
235int
236mbmatch(device_t pdp, cfdata_t cfp, 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(device_t pdp, device_t dp, void *auxp)
258{
259	printf("\n");
260	config_found(dp, __UNCONST("clock"), simple_devprint);
261	if (is_a3000() || is_a4000()) {
262		config_found(dp, __UNCONST("a34kbbc"), simple_devprint);
263	} else
264#ifdef DRACO
265	if (!is_draco())
266#endif
267	{
268		config_found(dp, __UNCONST("a2kbbc"), simple_devprint);
269	}
270#ifdef DRACO
271	if (is_draco()) {
272		config_found(dp, __UNCONST("drbbc"), simple_devprint);
273		config_found(dp, __UNCONST("kbd"), simple_devprint);
274		config_found(dp, __UNCONST("drsc"), simple_devprint);
275		config_found(dp, __UNCONST("drsupio"), simple_devprint);
276	} else
277#endif
278	{
279		config_found(dp, __UNCONST("ser"), simple_devprint);
280		config_found(dp, __UNCONST("par"), simple_devprint);
281		config_found(dp, __UNCONST("kbd"), simple_devprint);
282		config_found(dp, __UNCONST("ms"), simple_devprint);
283		config_found(dp, __UNCONST("grfcc"), simple_devprint);
284		config_found(dp, __UNCONST("amidisplaycc"), simple_devprint);
285		config_found(dp, __UNCONST("fdc"), simple_devprint);
286	}
287	if (is_a4000() || is_a1200() || is_a600())
288		config_found(dp, __UNCONST("wdc"), simple_devprint);
289	if (is_a4000())			/* Try to configure A4000T SCSI */
290		config_found(dp, __UNCONST("afsc"), simple_devprint);
291	if (is_a3000())
292		config_found(dp, __UNCONST("ahsc"), simple_devprint);
293	if (is_a600() || is_a1200())
294		config_found(dp, __UNCONST("pccard"), simple_devprint);
295#ifdef DRACO
296	if (!is_draco())
297#endif
298		config_found(dp, __UNCONST("aucc"), simple_devprint);
299
300	config_found(dp, __UNCONST("zbus"), simple_devprint);
301}
302
303int
304mbprint(void *auxp, const char *pnp)
305{
306	if (pnp)
307		aprint_normal("%s at %s", (char *)auxp, pnp);
308	return(UNCONF);
309}
310
311/*
312 * The system will assign the "booted device" indicator (and thus
313 * rootdev if rootspec is wildcarded) to the first partition 'a'
314 * in preference of boot.  However, it does walk unit backwards
315 * to remain compatible with the old Amiga method of picking the
316 * last root found.
317 */
318#include <sys/fcntl.h>		/* XXXX and all that uses it */
319#include <sys/proc.h>		/* XXXX and all that uses it */
320
321#include "fd.h"
322#include "sd.h"
323#include "cd.h"
324#include "wd.h"
325
326#if NFD > 0
327extern  struct cfdriver fd_cd;
328extern	const struct bdevsw fd_bdevsw;
329#endif
330#if NSD > 0
331extern  struct cfdriver sd_cd;
332extern	const struct bdevsw sd_bdevsw;
333#endif
334#if NCD > 0
335extern  struct cfdriver cd_cd;
336extern	const struct bdevsw cd_bdevsw;
337#endif
338#if NWD > 0
339extern  struct cfdriver wd_cd;
340extern	const struct bdevsw wd_bdevsw;
341#endif
342
343struct cfdriver *genericconf[] = {
344#if NFD > 0
345	&fd_cd,
346#endif
347#if NSD > 0
348	&sd_cd,
349#endif
350#if NWD > 0
351	&wd_cd,
352#endif
353#if NCD > 0
354	&cd_cd,
355#endif
356	NULL,
357};
358
359void
360findroot(void)
361{
362	struct disk *dkp;
363	struct partition *pp;
364	device_t *devs;
365	int i, maj, unit;
366	const struct bdevsw *bdp;
367
368#if NSD > 0
369	/*
370	 * If we have the boot partition offset (boot_partition), try
371	 * to locate the device corresponding to that partition.
372	 */
373#ifdef DEBUG_KERNEL_START
374	printf("Boot partition offset is %ld\n", boot_partition);
375#endif
376	if (boot_partition != 0) {
377
378		for (unit = 0; unit < sd_cd.cd_ndevs; ++unit) {
379#ifdef DEBUG_KERNEL_START
380			printf("probing for sd%d\n", unit);
381#endif
382			if (device_lookup(&sd_cd,unit) == NULL)
383				continue;
384
385			/*
386			 * Find the disk corresponding to the current
387			 * device.
388			 */
389			devs = (device_t *)sd_cd.cd_devs;
390			if ((dkp = disk_find(device_xname(device_lookup(&sd_cd, unit)))) == NULL)
391				continue;
392
393			if (dkp->dk_driver == NULL ||
394			    dkp->dk_driver->d_strategy == NULL)
395				continue;
396			bdp = &sd_bdevsw;
397			maj = bdevsw_lookup_major(bdp);
398			if ((*bdp->d_open)(MAKEDISKDEV(maj, unit, RAW_PART),
399			    FREAD | FNONBLOCK, 0, curlwp))
400				continue;
401			(*bdp->d_close)(MAKEDISKDEV(maj, unit, RAW_PART),
402			    FREAD | FNONBLOCK, 0, curlwp);
403			pp = &dkp->dk_label->d_partitions[0];
404			for (i = 0; i < dkp->dk_label->d_npartitions;
405			    i++, pp++) {
406#ifdef DEBUG_KERNEL_START
407				printf("sd%d%c type %d offset %d size %d\n",
408					unit, i+'a', pp->p_fstype,
409					pp->p_offset, pp->p_size);
410#endif
411				if (pp->p_size == 0 ||
412				    (pp->p_fstype != FS_BSDFFS &&
413				    pp->p_fstype != FS_SWAP))
414					continue;
415				if (pp->p_offset == boot_partition) {
416					if (booted_device == NULL) {
417						booted_device = devs[unit];
418						booted_partition = i;
419					} else
420						printf("Ambiguous boot device\n");
421				}
422			}
423		}
424	}
425	if (booted_device != NULL)
426		return;		/* we found the boot device */
427#endif
428
429	for (i = 0; genericconf[i] != NULL; i++) {
430		for (unit = genericconf[i]->cd_ndevs - 1; unit >= 0; unit--) {
431			if (genericconf[i]->cd_devs[unit] == NULL)
432				continue;
433
434			/*
435			 * Find the disk structure corresponding to the
436			 * current device.
437			 */
438			devs = (device_t *)genericconf[i]->cd_devs;
439			if ((dkp = disk_find(device_xname(devs[unit]))) == NULL)
440				continue;
441
442			if (dkp->dk_driver == NULL ||
443			    dkp->dk_driver->d_strategy == NULL)
444				continue;
445
446			bdp = NULL;
447#if NFD > 0
448			if (fd_bdevsw.d_strategy == dkp->dk_driver->d_strategy)
449				bdp = &fd_bdevsw;
450#endif
451#if NSD > 0
452			if (sd_bdevsw.d_strategy == dkp->dk_driver->d_strategy)
453				bdp = &sd_bdevsw;
454#endif
455#if NWD > 0
456			if (wd_bdevsw.d_strategy == dkp->dk_driver->d_strategy)
457				bdp = &wd_bdevsw;
458#endif
459#if NCD > 0
460			if (cd_bdevsw.d_strategy == dkp->dk_driver->d_strategy)
461				bdp = &cd_bdevsw;
462#endif
463#ifdef DIAGNOSTIC
464			if (bdp == NULL)
465				panic("findroot: impossible");
466#endif
467			maj = bdevsw_lookup_major(bdp);
468
469			/* Open disk; forces read of disklabel. */
470			if ((*bdp->d_open)(MAKEDISKDEV(maj,
471			    unit, 0), FREAD|FNONBLOCK, 0, &lwp0))
472				continue;
473			(void)(*bdp->d_close)(MAKEDISKDEV(maj,
474			    unit, 0), FREAD|FNONBLOCK, 0, &lwp0);
475
476			pp = &dkp->dk_label->d_partitions[0];
477			if (pp->p_size != 0 && pp->p_fstype == FS_BSDFFS) {
478				booted_device = devs[unit];
479				booted_partition = 0;
480				return;
481			}
482		}
483	}
484}
485
486/*
487 * Try to determine, of this machine is an A3000, which has a builtin
488 * realtime clock and scsi controller, so that this hardware is only
489 * included as "configured" if this IS an A3000
490 */
491
492int a3000_flag = 1;		/* patchable */
493#ifdef A4000
494int a4000_flag = 1;		/* patchable - default to A4000 */
495#else
496int a4000_flag = 0;		/* patchable */
497#endif
498
499int
500is_a3000()
501{
502	/* this is a dirty kludge.. but how do you do this RIGHT ? :-) */
503	extern long boot_fphystart;
504	short sc;
505
506	if ((machineid >> 16) == 3000)
507		return (1);			/* It's an A3000 */
508	if (machineid >> 16)
509		return (0);			/* It's not an A3000 */
510	/* Machine type is unknown, so try to guess it */
511	/* where is fastram on the A4000 ?? */
512	/* if fastram is below 0x07000000, assume it's not an A3000 */
513	if (boot_fphystart < 0x07000000)
514		return(0);
515	/*
516	 * OK, fastram starts at or above 0x07000000, check specific
517	 * machines
518	 */
519	for (sc = 0; sc < ncfdev; sc++) {
520		switch (cfdev[sc].rom.manid) {
521		case 2026:		/* Progressive Peripherals, Inc */
522			switch (cfdev[sc].rom.prodid) {
523			case 0:		/* PPI Mercury - A3000 */
524			case 1:		/* PP&S A3000 '040 */
525				return(1);
526			case 150:	/* PPI Zeus - it's an A2000 */
527			case 105:	/* PP&S A2000 '040 */
528			case 187:	/* PP&S A500 '040 */
529				return(0);
530			}
531			break;
532
533		case 2112:			/* IVS */
534			switch (cfdev[sc].rom.prodid) {
535			case 242:
536				return(0);	/* A2000 accelerator? */
537			}
538			break;
539		}
540	}
541	return (a3000_flag);		/* XXX let flag tell now */
542}
543
544int
545is_a4000()
546{
547	if ((machineid >> 16) == 4000)
548		return (1);		/* It's an A4000 */
549	if ((machineid >> 16) == 1200)
550		return (0);		/* It's an A1200, so not A4000 */
551#ifdef DRACO
552	if (is_draco())
553		return (0);
554#endif
555	/* Do I need this any more? */
556	if ((custom.deniseid & 0xff) == 0xf8)
557		return (1);
558#ifdef DEBUG
559	if (a4000_flag)
560		printf("Denise ID = %04x\n", (unsigned short)custom.deniseid);
561#endif
562	if (machineid >> 16)
563		return (0);		/* It's not an A4000 */
564	return (a4000_flag);		/* Machine type not set */
565}
566
567int
568is_a1200()
569{
570	if ((machineid >> 16) == 1200)
571		return (1);		/* It's an A1200 */
572	return (0);			/* Machine type not set */
573}
574
575int
576is_a600()
577{
578	if ((machineid >> 16) == 600)
579		return (1);		/* It's an A600 */
580	return (0);			/* Machine type not set */
581}
582