autoconf.c revision 1.92 
1/*	$NetBSD: autoconf.c,v 1.92 2003/10/27 09:56:56 mhitch 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 1.92 2003/10/27 09:56:56 mhitch 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;
58struct device *booted_device;
59int booted_partition;
60
61int amiga_realconfig;
62
63/*
64 * called at boot time, configure all devices on system
65 */
66void
67cpu_configure()
68{
69	int s;
70#ifdef DEBUG_KERNEL_START
71	int i;
72#endif
73
74	/*
75	 * this is the real thing baby (i.e. not console init)
76	 */
77	amiga_realconfig = 1;
78#ifdef DRACO
79	if (is_draco()) {
80		*draco_intena &= ~DRIRQ_GLOBAL;
81	} else
82#endif
83	custom.intena = INTF_INTEN;
84	s = splhigh();
85
86	if (config_rootfound("mainbus", "mainbus") == NULL)
87		panic("no mainbus found");
88
89#ifdef DEBUG_KERNEL_START
90	printf("survived autoconf, going to enable interrupts\n");
91#endif
92
93#ifdef DRACO
94	if (is_draco()) {
95		*draco_intena |= DRIRQ_GLOBAL;
96		/* softints always enabled */
97	} else
98#endif
99	{
100		custom.intena = INTF_SETCLR | INTF_INTEN;
101
102		/* also enable hardware aided software interrupts */
103		custom.intena = INTF_SETCLR | INTF_SOFTINT;
104	}
105#ifdef DEBUG_KERNEL_START
106	for (i=splhigh(); i>=s ;i-=0x100) {
107		splx(i);
108		printf("%d...", (i>>8) & 7);
109	}
110	printf("survived interrupt enable\n");
111#else
112	splx(s);
113#endif
114#ifdef DEBUG_KERNEL_START
115	printf("survived configure...\n");
116#endif
117}
118
119void
120cpu_rootconf()
121{
122	findroot();
123#ifdef DEBUG_KERNEL_START
124	printf("survived findroot()\n");
125#endif
126	setroot(booted_device, booted_partition);
127#ifdef DEBUG_KERNEL_START
128	printf("survived setroot()\n");
129#endif
130}
131
132/*ARGSUSED*/
133int
134simple_devprint(auxp, pnp)
135	void *auxp;
136	const char *pnp;
137{
138	return(QUIET);
139}
140
141int
142matchname(fp, sp)
143	char *fp, *sp;
144{
145	int len;
146
147	len = strlen(fp);
148	if (strlen(sp) != len)
149		return(0);
150	if (bcmp(fp, sp, len) == 0)
151		return(1);
152	return(0);
153}
154
155/*
156 * use config_search 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(pcfp, pdp, auxp, pfn)
163	struct cfdata *pcfp;
164	struct device *pdp;
165	void *auxp;
166	cfprint_t pfn;
167{
168	struct device temp;
169	struct cfdata *cf;
170	const struct cfattach *ca;
171
172	if (amiga_realconfig)
173		return(config_found(pdp, auxp, pfn) != NULL);
174
175	if (pdp == NULL) {
176		memset(&temp, 0, sizeof temp);
177		pdp = &temp;
178	}
179
180	pdp->dv_cfdata = pcfp;
181	pdp->dv_cfdriver = config_cfdriver_lookup(pcfp->cf_name);
182	pdp->dv_unit = pcfp->cf_unit;
183
184	if ((cf = config_search((cfmatch_t)NULL, pdp, auxp)) != NULL) {
185		ca = config_cfattach_lookup(cf->cf_name, cf->cf_atname);
186		if (ca != NULL) {
187			(*ca->ca_attach)(pdp, NULL, auxp);
188			pdp->dv_cfdata = NULL;
189			return(1);
190		}
191	}
192	pdp->dv_cfdata = NULL;
193	return(0);
194}
195
196/*
197 * this function needs to get enough configured to do a console
198 * basically this means start attaching the grfxx's that support
199 * the console. Kinda hacky but it works.
200 */
201void
202config_console()
203{
204	struct cfdata *cf;
205
206	config_init();
207
208	/*
209	 * we need mainbus' cfdata.
210	 */
211	cf = config_rootsearch(NULL, "mainbus", "mainbus");
212	if (cf == NULL) {
213		panic("no mainbus");
214	}
215	/*
216	 * delay clock calibration.
217	 */
218	amiga_config_found(cf, NULL, "clock", NULL);
219
220	/*
221	 * internal grf.
222	 */
223#ifdef DRACO
224	if (!(is_draco()))
225#endif
226		amiga_config_found(cf, NULL, "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, "zbus", NULL);
233}
234
235/*
236 * mainbus driver
237 */
238CFATTACH_DECL(mainbus, sizeof(struct device),
239    mbmatch, mbattach, NULL, NULL);
240
241int
242mbmatch(pdp, cfp, auxp)
243	struct device	*pdp;
244	struct cfdata	*cfp;
245	void		*auxp;
246{
247#if 0	/*
248	 * XXX is this right? but we need to be found twice
249	 * (early console init hack)
250	 */
251	static int mainbus_matched = 0;
252
253	/* Allow only one instance. */
254	if (mainbus_matched)
255		return (0);
256
257	mainbus_matched = 1;
258#endif
259	return (1);
260}
261
262/*
263 * "find" all the things that should be there.
264 */
265void
266mbattach(pdp, dp, auxp)
267	struct device *pdp, *dp;
268	void *auxp;
269{
270	printf("\n");
271	config_found(dp, "clock", simple_devprint);
272	if (is_a3000() || is_a4000()) {
273		config_found(dp, "a34kbbc", simple_devprint);
274	} else
275#ifdef DRACO
276	if (!is_draco())
277#endif
278	{
279		config_found(dp, "a2kbbc", simple_devprint);
280	}
281#ifdef DRACO
282	if (is_draco()) {
283		config_found(dp, "drbbc", simple_devprint);
284		config_found(dp, "kbd", simple_devprint);
285		config_found(dp, "drsc", simple_devprint);
286		config_found(dp, "drsupio", simple_devprint);
287	} else
288#endif
289	{
290		config_found(dp, "ser", simple_devprint);
291		config_found(dp, "par", simple_devprint);
292		config_found(dp, "kbd", simple_devprint);
293		config_found(dp, "ms", simple_devprint);
294		config_found(dp, "grfcc", simple_devprint);
295		config_found(dp, "amidisplaycc", simple_devprint);
296		config_found(dp, "fdc", simple_devprint);
297	}
298	if (is_a4000() || is_a1200()) {
299		config_found(dp, "wdc", simple_devprint);
300		config_found(dp, "idesc", simple_devprint);
301	}
302	if (is_a4000())			/* Try to configure A4000T SCSI */
303		config_found(dp, "afsc", simple_devprint);
304	if (is_a3000())
305		config_found(dp, "ahsc", simple_devprint);
306	if (/*is_a600() || */is_a1200())
307		config_found(dp, "pccard", simple_devprint);
308#ifdef DRACO
309	if (!is_draco())
310#endif
311		config_found(dp, "aucc", simple_devprint);
312
313	config_found(dp, "zbus", simple_devprint);
314}
315
316int
317mbprint(auxp, pnp)
318	void *auxp;
319	const char *pnp;
320{
321	if (pnp)
322		aprint_normal("%s at %s", (char *)auxp, pnp);
323	return(UNCONF);
324}
325
326/*
327 * The system will assign the "booted device" indicator (and thus
328 * rootdev if rootspec is wildcarded) to the first partition 'a'
329 * in preference of boot.  However, it does walk unit backwards
330 * to remain compatible with the old Amiga method of picking the
331 * last root found.
332 */
333#include <sys/fcntl.h>		/* XXXX and all that uses it */
334#include <sys/proc.h>		/* XXXX and all that uses it */
335
336#include "fd.h"
337#include "sd.h"
338#include "cd.h"
339#include "wd.h"
340
341#if NFD > 0
342extern  struct cfdriver fd_cd;
343extern	const struct bdevsw fd_bdevsw;
344#endif
345#if NSD > 0
346extern  struct cfdriver sd_cd;
347extern	const struct bdevsw sd_bdevsw;
348#endif
349#if NCD > 0
350extern  struct cfdriver cd_cd;
351extern	const struct bdevsw cd_bdevsw;
352#endif
353#if NWD > 0
354extern  struct cfdriver wd_cd;
355extern	const struct bdevsw wd_bdevsw;
356#endif
357
358struct cfdriver *genericconf[] = {
359#if NFD > 0
360	&fd_cd,
361#endif
362#if NSD > 0
363	&sd_cd,
364#endif
365#if NWD > 0
366	&wd_cd,
367#endif
368#if NCD > 0
369	&cd_cd,
370#endif
371	NULL,
372};
373
374void
375findroot(void)
376{
377	struct disk *dkp;
378	struct partition *pp;
379	struct device **devs;
380	int i, maj, unit;
381	const struct bdevsw *bdp;
382
383#if NSD > 0
384	/*
385	 * If we have the boot partition offset (boot_partition), try
386	 * to locate the device corresponding to that partition.
387	 */
388#ifdef DEBUG_KERNEL_START
389	printf("Boot partition offset is %ld\n", boot_partition);
390#endif
391	if (boot_partition != 0) {
392		int i;
393
394		for (unit = 0; unit < sd_cd.cd_ndevs; ++unit) {
395#ifdef DEBUG_KERNEL_START
396			printf("probing for sd%d\n", unit);
397#endif
398			if (sd_cd.cd_devs[unit] == NULL)
399				continue;
400
401			/*
402			 * Find the disk corresponding to the current
403			 * device.
404			 */
405			devs = (struct device **)sd_cd.cd_devs;
406			if ((dkp = disk_find(devs[unit]->dv_xname)) == NULL)
407				continue;
408
409			if (dkp->dk_driver == NULL ||
410			    dkp->dk_driver->d_strategy == NULL)
411				continue;
412			bdp = &sd_bdevsw;
413			maj = bdevsw_lookup_major(bdp);
414			if ((*bdp->d_open)(MAKEDISKDEV(maj, unit, RAW_PART),
415			    FREAD | FNONBLOCK, 0, curproc))
416				continue;
417			(*bdp->d_close)(MAKEDISKDEV(maj, unit, RAW_PART),
418			    FREAD | FNONBLOCK, 0, curproc);
419			pp = &dkp->dk_label->d_partitions[0];
420			for (i = 0; i < dkp->dk_label->d_npartitions;
421			    i++, pp++) {
422#ifdef DEBUG_KERNEL_START
423				printf("sd%d%c type %d offset %d size %d\n",
424					unit, i+'a', pp->p_fstype,
425					pp->p_offset, pp->p_size);
426#endif
427				if (pp->p_size == 0 ||
428				    (pp->p_fstype != FS_BSDFFS &&
429				    pp->p_fstype != FS_SWAP))
430					continue;
431				if (pp->p_offset == boot_partition) {
432					if (booted_device == NULL) {
433						booted_device = devs[unit];
434						booted_partition = i;
435					} else
436						printf("Ambiguous boot device\n");
437				}
438			}
439		}
440	}
441	if (booted_device != NULL)
442		return;		/* we found the boot device */
443#endif
444
445	for (i = 0; genericconf[i] != NULL; i++) {
446		for (unit = genericconf[i]->cd_ndevs - 1; unit >= 0; unit--) {
447			if (genericconf[i]->cd_devs[unit] == NULL)
448				continue;
449
450			/*
451			 * Find the disk structure corresponding to the
452			 * current device.
453			 */
454			devs = (struct device **)genericconf[i]->cd_devs;
455			if ((dkp = disk_find(devs[unit]->dv_xname)) == NULL)
456				continue;
457
458			if (dkp->dk_driver == NULL ||
459			    dkp->dk_driver->d_strategy == NULL)
460				continue;
461
462			bdp = NULL;
463#if NFD > 0
464			if (fd_bdevsw.d_strategy == dkp->dk_driver->d_strategy)
465				bdp = &fd_bdevsw;
466#endif
467#if NSD > 0
468			if (sd_bdevsw.d_strategy == dkp->dk_driver->d_strategy)
469				bdp = &sd_bdevsw;
470#endif
471#if NWD > 0
472			if (wd_bdevsw.d_strategy == dkp->dk_driver->d_strategy)
473				bdp = &wd_bdevsw;
474#endif
475#if NCD > 0
476			if (cd_bdevsw.d_strategy == dkp->dk_driver->d_strategy)
477				bdp = &cd_bdevsw;
478#endif
479#ifdef DIAGNOSTIC
480			if (bdp == NULL)
481				panic("findroot: impossible");
482#endif
483			maj = bdevsw_lookup_major(bdp);
484
485			/* Open disk; forces read of disklabel. */
486			if ((*bdp->d_open)(MAKEDISKDEV(maj,
487			    unit, 0), FREAD|FNONBLOCK, 0, &proc0))
488				continue;
489			(void)(*bdp->d_close)(MAKEDISKDEV(maj,
490			    unit, 0), FREAD|FNONBLOCK, 0, &proc0);
491
492			pp = &dkp->dk_label->d_partitions[0];
493			if (pp->p_size != 0 && pp->p_fstype == FS_BSDFFS) {
494				booted_device = devs[unit];
495				booted_partition = 0;
496				return;
497			}
498		}
499	}
500}
501
502/*
503 * Try to determine, of this machine is an A3000, which has a builtin
504 * realtime clock and scsi controller, so that this hardware is only
505 * included as "configured" if this IS an A3000
506 */
507
508int a3000_flag = 1;		/* patchable */
509#ifdef A4000
510int a4000_flag = 1;		/* patchable - default to A4000 */
511#else
512int a4000_flag = 0;		/* patchable */
513#endif
514
515int
516is_a3000()
517{
518	/* this is a dirty kludge.. but how do you do this RIGHT ? :-) */
519	extern long boot_fphystart;
520	short sc;
521
522	if ((machineid >> 16) == 3000)
523		return (1);			/* It's an A3000 */
524	if (machineid >> 16)
525		return (0);			/* It's not an A3000 */
526	/* Machine type is unknown, so try to guess it */
527	/* where is fastram on the A4000 ?? */
528	/* if fastram is below 0x07000000, assume it's not an A3000 */
529	if (boot_fphystart < 0x07000000)
530		return(0);
531	/*
532	 * OK, fastram starts at or above 0x07000000, check specific
533	 * machines
534	 */
535	for (sc = 0; sc < ncfdev; sc++) {
536		switch (cfdev[sc].rom.manid) {
537		case 2026:		/* Progressive Peripherals, Inc */
538			switch (cfdev[sc].rom.prodid) {
539			case 0:		/* PPI Mercury - A3000 */
540			case 1:		/* PP&S A3000 '040 */
541				return(1);
542			case 150:	/* PPI Zeus - it's an A2000 */
543			case 105:	/* PP&S A2000 '040 */
544			case 187:	/* PP&S A500 '040 */
545				return(0);
546			}
547			break;
548
549		case 2112:			/* IVS */
550			switch (cfdev[sc].rom.prodid) {
551			case 242:
552				return(0);	/* A2000 accelerator? */
553			}
554			break;
555		}
556	}
557	return (a3000_flag);		/* XXX let flag tell now */
558}
559
560int
561is_a4000()
562{
563	if ((machineid >> 16) == 4000)
564		return (1);		/* It's an A4000 */
565	if ((machineid >> 16) == 1200)
566		return (0);		/* It's an A1200, so not A4000 */
567#ifdef DRACO
568	if (is_draco())
569		return (0);
570#endif
571	/* Do I need this any more? */
572	if ((custom.deniseid & 0xff) == 0xf8)
573		return (1);
574#ifdef DEBUG
575	if (a4000_flag)
576		printf("Denise ID = %04x\n", (unsigned short)custom.deniseid);
577#endif
578	if (machineid >> 16)
579		return (0);		/* It's not an A4000 */
580	return (a4000_flag);		/* Machine type not set */
581}
582
583int
584is_a1200()
585{
586	if ((machineid >> 16) == 1200)
587		return (1);		/* It's an A1200 */
588	return (0);			/* Machine type not set */
589}
590