autoconf.c revision 1.100 
1/*	$NetBSD: autoconf.c,v 1.100 2009/03/14 15:36:00 dsl 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 1.100 2009/03/14 15:36:00 dsl 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
50static void findroot(void);
51void mbattach(struct device *, struct device *, void *);
52int mbprint(void *, const char *);
53int mbmatch(struct device *, struct cfdata *, void *);
54
55#include <sys/kernel.h>
56
57u_long boot_partition;
58
59int amiga_realconfig;
60
61/*
62 * called at boot time, configure all devices on system
63 */
64void
65cpu_configure()
66{
67	int s;
68#ifdef DEBUG_KERNEL_START
69	int i;
70#endif
71
72	/*
73	 * this is the real thing baby (i.e. not console init)
74	 */
75	amiga_realconfig = 1;
76#ifdef DRACO
77	if (is_draco()) {
78		*draco_intena &= ~DRIRQ_GLOBAL;
79	} else
80#endif
81	custom.intena = INTF_INTEN;
82	s = splhigh();
83
84	if (config_rootfound("mainbus", NULL) == NULL)
85		panic("no mainbus found");
86
87#ifdef DEBUG_KERNEL_START
88	printf("survived autoconf, going to enable interrupts\n");
89#endif
90
91#ifdef DRACO
92	if (is_draco()) {
93		*draco_intena |= DRIRQ_GLOBAL;
94		/* softints always enabled */
95	} else
96#endif
97	{
98		custom.intena = INTF_SETCLR | INTF_INTEN;
99
100		/* also enable hardware aided software interrupts */
101		custom.intena = INTF_SETCLR | INTF_SOFTINT;
102	}
103#ifdef DEBUG_KERNEL_START
104	for (i=splhigh(); i>=s ;i-=0x100) {
105		splx(i);
106		printf("%d...", (i>>8) & 7);
107	}
108	printf("survived interrupt enable\n");
109#else
110	splx(s);
111#endif
112#ifdef DEBUG_KERNEL_START
113	printf("survived configure...\n");
114#endif
115}
116
117void
118cpu_rootconf()
119{
120	findroot();
121#ifdef DEBUG_KERNEL_START
122	printf("survived findroot()\n");
123#endif
124	setroot(booted_device, booted_partition);
125#ifdef DEBUG_KERNEL_START
126	printf("survived setroot()\n");
127#endif
128}
129
130/*ARGSUSED*/
131int
132simple_devprint(void *auxp, const char *pnp)
133{
134	return(QUIET);
135}
136
137int
138matchname(fp, sp)
139	const char *fp, *sp;
140{
141	int len;
142
143	len = strlen(fp);
144	if (strlen(sp) != len)
145		return(0);
146	if (bcmp(fp, sp, len) == 0)
147		return(1);
148	return(0);
149}
150
151/*
152 * use config_search_ia to find appropriate device, then call that device
153 * directly with NULL device variable storage.  A device can then
154 * always tell the difference betwean the real and console init
155 * by checking for NULL.
156 */
157int
158amiga_config_found(struct cfdata *pcfp, struct device *pdp, void *auxp, cfprint_t pfn)
159{
160	struct device temp;
161	struct cfdata *cf;
162	const struct cfattach *ca;
163
164	if (amiga_realconfig)
165		return(config_found(pdp, auxp, pfn) != NULL);
166
167	if (pdp == NULL) {
168		memset(&temp, 0, sizeof temp);
169		pdp = &temp;
170	}
171
172	pdp->dv_cfdata = pcfp;
173	pdp->dv_cfdriver = config_cfdriver_lookup(pcfp->cf_name);
174	pdp->dv_unit = pcfp->cf_unit;
175
176	if ((cf = config_search_ia(NULL, pdp, NULL, auxp)) != NULL) {
177		ca = config_cfattach_lookup(cf->cf_name, cf->cf_atname);
178		if (ca != NULL) {
179			(*ca->ca_attach)(pdp, NULL, auxp);
180			pdp->dv_cfdata = NULL;
181			return(1);
182		}
183	}
184	pdp->dv_cfdata = NULL;
185	return(0);
186}
187
188/*
189 * this function needs to get enough configured to do a console
190 * basically this means start attaching the grfxx's that support
191 * the console. Kinda hacky but it works.
192 */
193void
194config_console()
195{
196	struct cfdata *cf;
197
198	config_init();
199
200	/*
201	 * we need mainbus' cfdata.
202	 */
203	cf = config_rootsearch(NULL, "mainbus", NULL);
204	if (cf == NULL) {
205		panic("no mainbus");
206	}
207	/*
208	 * delay clock calibration.
209	 */
210	amiga_config_found(cf, NULL, __UNCONST("clock"), NULL);
211
212	/*
213	 * internal grf.
214	 */
215#ifdef DRACO
216	if (!(is_draco()))
217#endif
218		amiga_config_found(cf, NULL, __UNCONST("grfcc"), NULL);
219
220	/*
221	 * zbus knows when its not for real and will
222	 * only configure the appropriate hardware
223	 */
224	amiga_config_found(cf, NULL, __UNCONST("zbus"), NULL);
225}
226
227/*
228 * mainbus driver
229 */
230CFATTACH_DECL(mainbus, sizeof(struct device),
231    mbmatch, mbattach, NULL, NULL);
232
233int
234mbmatch(struct device *pdp, struct cfdata *cfp, void *auxp)
235{
236#if 0	/*
237	 * XXX is this right? but we need to be found twice
238	 * (early console init hack)
239	 */
240	static int mainbus_matched = 0;
241
242	/* Allow only one instance. */
243	if (mainbus_matched)
244		return (0);
245
246	mainbus_matched = 1;
247#endif
248	return (1);
249}
250
251/*
252 * "find" all the things that should be there.
253 */
254void
255mbattach(pdp, dp, auxp)
256	struct device *pdp, *dp;
257	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()) {
288		config_found(dp, __UNCONST("wdc"), simple_devprint);
289		config_found(dp, __UNCONST("idesc"), simple_devprint);
290	}
291	if (is_a4000())			/* Try to configure A4000T SCSI */
292		config_found(dp, __UNCONST("afsc"), simple_devprint);
293	if (is_a3000())
294		config_found(dp, __UNCONST("ahsc"), simple_devprint);
295	if (/*is_a600() || */is_a1200())
296		config_found(dp, __UNCONST("pccard"), simple_devprint);
297#ifdef DRACO
298	if (!is_draco())
299#endif
300		config_found(dp, __UNCONST("aucc"), simple_devprint);
301
302	config_found(dp, __UNCONST("zbus"), simple_devprint);
303}
304
305int
306mbprint(void *auxp, const char *pnp)
307{
308	if (pnp)
309		aprint_normal("%s at %s", (char *)auxp, pnp);
310	return(UNCONF);
311}
312
313/*
314 * The system will assign the "booted device" indicator (and thus
315 * rootdev if rootspec is wildcarded) to the first partition 'a'
316 * in preference of boot.  However, it does walk unit backwards
317 * to remain compatible with the old Amiga method of picking the
318 * last root found.
319 */
320#include <sys/fcntl.h>		/* XXXX and all that uses it */
321#include <sys/proc.h>		/* XXXX and all that uses it */
322
323#include "fd.h"
324#include "sd.h"
325#include "cd.h"
326#include "wd.h"
327
328#if NFD > 0
329extern  struct cfdriver fd_cd;
330extern	const struct bdevsw fd_bdevsw;
331#endif
332#if NSD > 0
333extern  struct cfdriver sd_cd;
334extern	const struct bdevsw sd_bdevsw;
335#endif
336#if NCD > 0
337extern  struct cfdriver cd_cd;
338extern	const struct bdevsw cd_bdevsw;
339#endif
340#if NWD > 0
341extern  struct cfdriver wd_cd;
342extern	const struct bdevsw wd_bdevsw;
343#endif
344
345struct cfdriver *genericconf[] = {
346#if NFD > 0
347	&fd_cd,
348#endif
349#if NSD > 0
350	&sd_cd,
351#endif
352#if NWD > 0
353	&wd_cd,
354#endif
355#if NCD > 0
356	&cd_cd,
357#endif
358	NULL,
359};
360
361void
362findroot(void)
363{
364	struct disk *dkp;
365	struct partition *pp;
366	device_t *devs;
367	int i, maj, unit;
368	const struct bdevsw *bdp;
369
370#if NSD > 0
371	/*
372	 * If we have the boot partition offset (boot_partition), try
373	 * to locate the device corresponding to that partition.
374	 */
375#ifdef DEBUG_KERNEL_START
376	printf("Boot partition offset is %ld\n", boot_partition);
377#endif
378	if (boot_partition != 0) {
379
380		for (unit = 0; unit < sd_cd.cd_ndevs; ++unit) {
381#ifdef DEBUG_KERNEL_START
382			printf("probing for sd%d\n", unit);
383#endif
384			if (device_lookup(&sd_cd,unit) == NULL)
385				continue;
386
387			/*
388			 * Find the disk corresponding to the current
389			 * device.
390			 */
391			devs = (device_t *)sd_cd.cd_devs;
392			if ((dkp = disk_find(device_xname(device_lookup(&sd_cd, unit)))) == NULL)
393				continue;
394
395			if (dkp->dk_driver == NULL ||
396			    dkp->dk_driver->d_strategy == NULL)
397				continue;
398			bdp = &sd_bdevsw;
399			maj = bdevsw_lookup_major(bdp);
400			if ((*bdp->d_open)(MAKEDISKDEV(maj, unit, RAW_PART),
401			    FREAD | FNONBLOCK, 0, curlwp))
402				continue;
403			(*bdp->d_close)(MAKEDISKDEV(maj, unit, RAW_PART),
404			    FREAD | FNONBLOCK, 0, curlwp);
405			pp = &dkp->dk_label->d_partitions[0];
406			for (i = 0; i < dkp->dk_label->d_npartitions;
407			    i++, pp++) {
408#ifdef DEBUG_KERNEL_START
409				printf("sd%d%c type %d offset %d size %d\n",
410					unit, i+'a', pp->p_fstype,
411					pp->p_offset, pp->p_size);
412#endif
413				if (pp->p_size == 0 ||
414				    (pp->p_fstype != FS_BSDFFS &&
415				    pp->p_fstype != FS_SWAP))
416					continue;
417				if (pp->p_offset == boot_partition) {
418					if (booted_device == NULL) {
419						booted_device = devs[unit];
420						booted_partition = i;
421					} else
422						printf("Ambiguous boot device\n");
423				}
424			}
425		}
426	}
427	if (booted_device != NULL)
428		return;		/* we found the boot device */
429#endif
430
431	for (i = 0; genericconf[i] != NULL; i++) {
432		for (unit = genericconf[i]->cd_ndevs - 1; unit >= 0; unit--) {
433			if (genericconf[i]->cd_devs[unit] == NULL)
434				continue;
435
436			/*
437			 * Find the disk structure corresponding to the
438			 * current device.
439			 */
440			devs = (device_t *)genericconf[i]->cd_devs;
441			if ((dkp = disk_find(device_xname(devs[unit]))) == NULL)
442				continue;
443
444			if (dkp->dk_driver == NULL ||
445			    dkp->dk_driver->d_strategy == NULL)
446				continue;
447
448			bdp = NULL;
449#if NFD > 0
450			if (fd_bdevsw.d_strategy == dkp->dk_driver->d_strategy)
451				bdp = &fd_bdevsw;
452#endif
453#if NSD > 0
454			if (sd_bdevsw.d_strategy == dkp->dk_driver->d_strategy)
455				bdp = &sd_bdevsw;
456#endif
457#if NWD > 0
458			if (wd_bdevsw.d_strategy == dkp->dk_driver->d_strategy)
459				bdp = &wd_bdevsw;
460#endif
461#if NCD > 0
462			if (cd_bdevsw.d_strategy == dkp->dk_driver->d_strategy)
463				bdp = &cd_bdevsw;
464#endif
465#ifdef DIAGNOSTIC
466			if (bdp == NULL)
467				panic("findroot: impossible");
468#endif
469			maj = bdevsw_lookup_major(bdp);
470
471			/* Open disk; forces read of disklabel. */
472			if ((*bdp->d_open)(MAKEDISKDEV(maj,
473			    unit, 0), FREAD|FNONBLOCK, 0, &lwp0))
474				continue;
475			(void)(*bdp->d_close)(MAKEDISKDEV(maj,
476			    unit, 0), FREAD|FNONBLOCK, 0, &lwp0);
477
478			pp = &dkp->dk_label->d_partitions[0];
479			if (pp->p_size != 0 && pp->p_fstype == FS_BSDFFS) {
480				booted_device = devs[unit];
481				booted_partition = 0;
482				return;
483			}
484		}
485	}
486}
487
488/*
489 * Try to determine, of this machine is an A3000, which has a builtin
490 * realtime clock and scsi controller, so that this hardware is only
491 * included as "configured" if this IS an A3000
492 */
493
494int a3000_flag = 1;		/* patchable */
495#ifdef A4000
496int a4000_flag = 1;		/* patchable - default to A4000 */
497#else
498int a4000_flag = 0;		/* patchable */
499#endif
500
501int
502is_a3000()
503{
504	/* this is a dirty kludge.. but how do you do this RIGHT ? :-) */
505	extern long boot_fphystart;
506	short sc;
507
508	if ((machineid >> 16) == 3000)
509		return (1);			/* It's an A3000 */
510	if (machineid >> 16)
511		return (0);			/* It's not an A3000 */
512	/* Machine type is unknown, so try to guess it */
513	/* where is fastram on the A4000 ?? */
514	/* if fastram is below 0x07000000, assume it's not an A3000 */
515	if (boot_fphystart < 0x07000000)
516		return(0);
517	/*
518	 * OK, fastram starts at or above 0x07000000, check specific
519	 * machines
520	 */
521	for (sc = 0; sc < ncfdev; sc++) {
522		switch (cfdev[sc].rom.manid) {
523		case 2026:		/* Progressive Peripherals, Inc */
524			switch (cfdev[sc].rom.prodid) {
525			case 0:		/* PPI Mercury - A3000 */
526			case 1:		/* PP&S A3000 '040 */
527				return(1);
528			case 150:	/* PPI Zeus - it's an A2000 */
529			case 105:	/* PP&S A2000 '040 */
530			case 187:	/* PP&S A500 '040 */
531				return(0);
532			}
533			break;
534
535		case 2112:			/* IVS */
536			switch (cfdev[sc].rom.prodid) {
537			case 242:
538				return(0);	/* A2000 accelerator? */
539			}
540			break;
541		}
542	}
543	return (a3000_flag);		/* XXX let flag tell now */
544}
545
546int
547is_a4000()
548{
549	if ((machineid >> 16) == 4000)
550		return (1);		/* It's an A4000 */
551	if ((machineid >> 16) == 1200)
552		return (0);		/* It's an A1200, so not A4000 */
553#ifdef DRACO
554	if (is_draco())
555		return (0);
556#endif
557	/* Do I need this any more? */
558	if ((custom.deniseid & 0xff) == 0xf8)
559		return (1);
560#ifdef DEBUG
561	if (a4000_flag)
562		printf("Denise ID = %04x\n", (unsigned short)custom.deniseid);
563#endif
564	if (machineid >> 16)
565		return (0);		/* It's not an A4000 */
566	return (a4000_flag);		/* Machine type not set */
567}
568
569int
570is_a1200()
571{
572	if ((machineid >> 16) == 1200)
573		return (1);		/* It's an A1200 */
574	return (0);			/* Machine type not set */
575}
576