autoconf.c revision 1.85 
1/*	$NetBSD: autoconf.c,v 1.85 2002/10/02 04:55:47 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 1.85 2002/10/02 04:55:47 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 <machine/cpu.h>
45#include <amiga/amiga/cfdev.h>
46#include <amiga/amiga/device.h>
47#include <amiga/amiga/custom.h>
48
49static void findroot(void);
50void mbattach(struct device *, struct device *, void *);
51int mbprint(void *, const char *);
52int mbmatch(struct device *, struct cfdata *, void *);
53
54#include <sys/kernel.h>
55
56u_long boot_partition;
57struct device *booted_device;
58int booted_partition;
59
60int amiga_realconfig;
61
62/*
63 * called at boot time, configure all devices on system
64 */
65void
66cpu_configure()
67{
68	int s;
69#ifdef DEBUG_KERNEL_START
70	int i;
71#endif
72
73	/*
74	 * this is the real thing baby (i.e. not console init)
75	 */
76	amiga_realconfig = 1;
77#ifdef DRACO
78	if (is_draco()) {
79		*draco_intena &= ~DRIRQ_GLOBAL;
80	} else
81#endif
82	custom.intena = INTF_INTEN;
83	s = splhigh();
84
85	if (config_rootfound("mainbus", "mainbus") == NULL)
86		panic("no mainbus found");
87
88#ifdef DEBUG_KERNEL_START
89	printf("survived autoconf, going to enable interrupts\n");
90#endif
91
92#ifdef DRACO
93	if (is_draco()) {
94		*draco_intena |= DRIRQ_GLOBAL;
95		/* softints always enabled */
96	} else
97#endif
98	{
99		custom.intena = INTF_SETCLR | INTF_INTEN;
100
101		/* also enable hardware aided software interrupts */
102		custom.intena = INTF_SETCLR | INTF_SOFTINT;
103	}
104#ifdef DEBUG_KERNEL_START
105	for (i=splhigh(); i>=s ;i-=0x100) {
106		splx(i);
107		printf("%d...", (i>>8) & 7);
108	}
109	printf("survived interrupt enable\n");
110#else
111	splx(s);
112#endif
113#ifdef DEBUG_KERNEL_START
114	printf("survived configure...\n");
115#endif
116}
117
118void
119cpu_rootconf()
120{
121	findroot();
122#ifdef DEBUG_KERNEL_START
123	printf("survived findroot()\n");
124#endif
125	setroot(booted_device, booted_partition);
126#ifdef DEBUG_KERNEL_START
127	printf("survived setroot()\n");
128#endif
129}
130
131/*ARGSUSED*/
132int
133simple_devprint(auxp, pnp)
134	void *auxp;
135	const char *pnp;
136{
137	return(QUIET);
138}
139
140int
141matchname(fp, sp)
142	char *fp, *sp;
143{
144	int len;
145
146	len = strlen(fp);
147	if (strlen(sp) != len)
148		return(0);
149	if (bcmp(fp, sp, len) == 0)
150		return(1);
151	return(0);
152}
153
154/*
155 * use config_search to find appropriate device, then call that device
156 * directly with NULL device variable storage.  A device can then
157 * always tell the difference betwean the real and console init
158 * by checking for NULL.
159 */
160int
161amiga_config_found(pcfp, pdp, auxp, pfn)
162	struct cfdata *pcfp;
163	struct device *pdp;
164	void *auxp;
165	cfprint_t pfn;
166{
167	struct device temp;
168	struct cfdata *cf;
169
170	if (amiga_realconfig)
171		return(config_found(pdp, auxp, pfn) != NULL);
172
173	if (pdp == NULL)
174		pdp = &temp;
175
176	pdp->dv_cfdata = pcfp;
177	if ((cf = config_search((cfmatch_t)NULL, pdp, auxp)) != NULL) {
178		cf->cf_attach->ca_attach(pdp, NULL, auxp);
179		pdp->dv_cfdata = NULL;
180		return(1);
181	}
182	pdp->dv_cfdata = NULL;
183	return(0);
184}
185
186/*
187 * this function needs to get enough configured to do a console
188 * basically this means start attaching the grfxx's that support
189 * the console. Kinda hacky but it works.
190 */
191void
192config_console()
193{
194	struct cfdata *cf;
195
196	config_init();
197
198	/*
199	 * we need mainbus' cfdata.
200	 */
201	cf = config_rootsearch(NULL, "mainbus", "mainbus");
202	if (cf == NULL) {
203		panic("no mainbus");
204	}
205	/*
206	 * delay clock calibration.
207	 */
208	amiga_config_found(cf, NULL, "clock", NULL);
209
210	/*
211	 * internal grf.
212	 */
213#ifdef DRACO
214	if (!(is_draco()))
215#endif
216		amiga_config_found(cf, NULL, "grfcc", NULL);
217
218	/*
219	 * zbus knows when its not for real and will
220	 * only configure the appropriate hardware
221	 */
222	amiga_config_found(cf, NULL, "zbus", NULL);
223}
224
225/*
226 * mainbus driver
227 */
228CFATTACH_DECL(mainbus, sizeof(struct device),
229    mbmatch, mbattach, NULL, NULL);
230
231int
232mbmatch(pdp, cfp, auxp)
233	struct device	*pdp;
234	struct cfdata	*cfp;
235	void		*auxp;
236{
237#if 0	/*
238	 * XXX is this right? but we need to be found twice
239	 * (early console init hack)
240	 */
241	static int mainbus_matched = 0;
242
243	/* Allow only one instance. */
244	if (mainbus_matched)
245		return (0);
246
247	mainbus_matched = 1;
248#endif
249	return (1);
250}
251
252/*
253 * "find" all the things that should be there.
254 */
255void
256mbattach(pdp, dp, auxp)
257	struct device *pdp, *dp;
258	void *auxp;
259{
260	printf("\n");
261	config_found(dp, "clock", simple_devprint);
262	if (is_a3000() || is_a4000()) {
263		config_found(dp, "a34kbbc", simple_devprint);
264	} else
265#ifdef DRACO
266	if (!is_draco())
267#endif
268	{
269		config_found(dp, "a2kbbc", simple_devprint);
270	}
271#ifdef DRACO
272	if (is_draco()) {
273		config_found(dp, "drbbc", simple_devprint);
274		config_found(dp, "kbd", simple_devprint);
275		config_found(dp, "drsc", simple_devprint);
276		config_found(dp, "drsupio", simple_devprint);
277	} else
278#endif
279	{
280		config_found(dp, "ser", simple_devprint);
281		config_found(dp, "par", simple_devprint);
282		config_found(dp, "kbd", simple_devprint);
283		config_found(dp, "ms", simple_devprint);
284		config_found(dp, "grfcc", simple_devprint);
285		config_found(dp, "amidisplaycc", simple_devprint);
286		config_found(dp, "fdc", simple_devprint);
287	}
288	if (is_a4000() || is_a1200()) {
289		config_found(dp, "wdc", simple_devprint);
290		config_found(dp, "idesc", simple_devprint);
291	}
292	if (is_a4000())			/* Try to configure A4000T SCSI */
293		config_found(dp, "afsc", simple_devprint);
294	if (is_a3000())
295		config_found(dp, "ahsc", simple_devprint);
296	if (/*is_a600() || */is_a1200())
297		config_found(dp, "pccard", simple_devprint);
298#ifdef DRACO
299	if (!is_draco())
300#endif
301		config_found(dp, "aucc", simple_devprint);
302
303	config_found(dp, "zbus", simple_devprint);
304}
305
306int
307mbprint(auxp, pnp)
308	void *auxp;
309	const char *pnp;
310{
311	if (pnp)
312		printf("%s at %s", (char *)auxp, pnp);
313	return(UNCONF);
314}
315
316/*
317 * The system will assign the "booted device" indicator (and thus
318 * rootdev if rootspec is wildcarded) to the first partition 'a'
319 * in preference of boot.  However, it does walk unit backwards
320 * to remain compatible with the old Amiga method of picking the
321 * last root found.
322 */
323#include <sys/fcntl.h>		/* XXXX and all that uses it */
324#include <sys/proc.h>		/* XXXX and all that uses it */
325
326#include "fd.h"
327#include "sd.h"
328#include "cd.h"
329#include "wd.h"
330
331#if NFD > 0
332extern  struct cfdriver fd_cd;
333extern	const struct bdevsw fd_bdevsw;
334#endif
335#if NSD > 0
336extern  struct cfdriver sd_cd;
337extern	const struct bdevsw sd_bdevsw;
338#endif
339#if NCD > 0
340extern  struct cfdriver cd_cd;
341extern	const struct bdevsw cd_bdevsw;
342#endif
343#if NWD > 0
344extern  struct cfdriver wd_cd;
345extern	const struct bdevsw wd_bdevsw;
346#endif
347
348struct cfdriver *genericconf[] = {
349#if NFD > 0
350	&fd_cd,
351#endif
352#if NSD > 0
353	&sd_cd,
354#endif
355#if NWD > 0
356	&wd_cd,
357#endif
358#if NCD > 0
359	&cd_cd,
360#endif
361	NULL,
362};
363
364void
365findroot(void)
366{
367	struct disk *dkp;
368	struct partition *pp;
369	struct device **devs;
370	int i, maj, unit;
371	const struct bdevsw *bdp;
372
373#if NSD > 0
374	/*
375	 * If we have the boot partition offset (boot_partition), try
376	 * to locate the device corresponding to that partition.
377	 */
378#ifdef DEBUG_KERNEL_START
379	printf("Boot partition offset is %ld\n", boot_partition);
380#endif
381	if (boot_partition != 0) {
382		int i;
383
384		for (unit = 0; unit < sd_cd.cd_ndevs; ++unit) {
385#ifdef DEBUG_KERNEL_START
386			printf("probing for sd%d\n", unit);
387#endif
388			if (sd_cd.cd_devs[unit] == NULL)
389				continue;
390
391			/*
392			 * Find the disk corresponding to the current
393			 * device.
394			 */
395			devs = (struct device **)sd_cd.cd_devs;
396			if ((dkp = disk_find(devs[unit]->dv_xname)) == NULL)
397				continue;
398
399			if (dkp->dk_driver == NULL ||
400			    dkp->dk_driver->d_strategy == NULL)
401				continue;
402			bdp = &sd_bdevsw;
403			maj = bdevsw_lookup_major(bdp);
404			if ((*bdp->d_open)(MAKEDISKDEV(maj, unit, RAW_PART),
405			    FREAD | FNONBLOCK, 0, curproc))
406				continue;
407			(*bdp->d_close)(MAKEDISKDEV(maj, unit, RAW_PART),
408			    FREAD | FNONBLOCK, 0, curproc);
409			pp = &dkp->dk_label->d_partitions[0];
410			for (i = 0; i < dkp->dk_label->d_npartitions;
411			    i++, pp++) {
412#ifdef DEBUG_KERNEL_START
413				printf("sd%d%c type %d offset %d size %d\n",
414					unit, i+'a', pp->p_fstype,
415					pp->p_offset, pp->p_size);
416#endif
417				if (pp->p_size == 0 ||
418				    (pp->p_fstype != FS_BSDFFS &&
419				    pp->p_fstype != FS_SWAP))
420					continue;
421				if (pp->p_offset == boot_partition) {
422					if (booted_device == NULL) {
423						booted_device = devs[unit];
424						booted_partition = i;
425					} else
426						printf("Ambiguous boot device\n");
427				}
428			}
429		}
430	}
431	if (booted_device != NULL)
432		return;		/* we found the boot device */
433#endif
434
435	for (i = 0; genericconf[i] != NULL; i++) {
436		for (unit = genericconf[i]->cd_ndevs - 1; unit >= 0; unit--) {
437			if (genericconf[i]->cd_devs[unit] == NULL)
438				continue;
439
440			/*
441			 * Find the disk structure corresponding to the
442			 * current device.
443			 */
444			devs = (struct device **)genericconf[i]->cd_devs;
445			if ((dkp = disk_find(devs[unit]->dv_xname)) == NULL)
446				continue;
447
448			if (dkp->dk_driver == NULL ||
449			    dkp->dk_driver->d_strategy == NULL)
450				continue;
451
452#if NFD > 0
453			if (fd_bdevsw.d_strategy == dkp->dk_driver->d_strategy)
454				bdp = &fd_bdevsw;
455#endif
456#if NSD > 0
457			if (sd_bdevsw.d_strategy == dkp->dk_driver->d_strategy)
458				bdp = &sd_bdevsw;
459#endif
460#if NWD > 0
461			if (wd_bdevsw.d_strategy == dkp->dk_driver->d_strategy)
462				bdp = &wd_bdevsw;
463#endif
464#if NCD > 0
465			if (cd_bdevsw.d_strategy == dkp->dk_driver->d_strategy)
466				bdp = &cd_bdevsw;
467#endif
468#ifdef DIAGNOSTIC
469			if (bdp == NULL)
470				panic("findroot: impossible");
471#endif
472			maj = bdevsw_lookup_major(bdp);
473
474			/* Open disk; forces read of disklabel. */
475			if ((*bdp->d_open)(MAKEDISKDEV(maj,
476			    unit, 0), FREAD|FNONBLOCK, 0, &proc0))
477				continue;
478			(void)(*bdp->d_close)(MAKEDISKDEV(maj,
479			    unit, 0), FREAD|FNONBLOCK, 0, &proc0);
480
481			pp = &dkp->dk_label->d_partitions[0];
482			if (pp->p_size != 0 && pp->p_fstype == FS_BSDFFS) {
483				booted_device = devs[unit];
484				booted_partition = 0;
485				return;
486			}
487		}
488	}
489}
490
491/*
492 * Try to determine, of this machine is an A3000, which has a builtin
493 * realtime clock and scsi controller, so that this hardware is only
494 * included as "configured" if this IS an A3000
495 */
496
497int a3000_flag = 1;		/* patchable */
498#ifdef A4000
499int a4000_flag = 1;		/* patchable - default to A4000 */
500#else
501int a4000_flag = 0;		/* patchable */
502#endif
503
504int
505is_a3000()
506{
507	/* this is a dirty kludge.. but how do you do this RIGHT ? :-) */
508	extern long boot_fphystart;
509	short sc;
510
511	if ((machineid >> 16) == 3000)
512		return (1);			/* It's an A3000 */
513	if (machineid >> 16)
514		return (0);			/* It's not an A3000 */
515	/* Machine type is unknown, so try to guess it */
516	/* where is fastram on the A4000 ?? */
517	/* if fastram is below 0x07000000, assume it's not an A3000 */
518	if (boot_fphystart < 0x07000000)
519		return(0);
520	/*
521	 * OK, fastram starts at or above 0x07000000, check specific
522	 * machines
523	 */
524	for (sc = 0; sc < ncfdev; sc++) {
525		switch (cfdev[sc].rom.manid) {
526		case 2026:		/* Progressive Peripherals, Inc */
527			switch (cfdev[sc].rom.prodid) {
528			case 0:		/* PPI Mercury - A3000 */
529			case 1:		/* PP&S A3000 '040 */
530				return(1);
531			case 150:	/* PPI Zeus - it's an A2000 */
532			case 105:	/* PP&S A2000 '040 */
533			case 187:	/* PP&S A500 '040 */
534				return(0);
535			}
536			break;
537
538		case 2112:			/* IVS */
539			switch (cfdev[sc].rom.prodid) {
540			case 242:
541				return(0);	/* A2000 accelerator? */
542			}
543			break;
544		}
545	}
546	return (a3000_flag);		/* XXX let flag tell now */
547}
548
549int
550is_a4000()
551{
552	if ((machineid >> 16) == 4000)
553		return (1);		/* It's an A4000 */
554	if ((machineid >> 16) == 1200)
555		return (0);		/* It's an A1200, so not A4000 */
556#ifdef DRACO
557	if (is_draco())
558		return (0);
559#endif
560	/* Do I need this any more? */
561	if ((custom.deniseid & 0xff) == 0xf8)
562		return (1);
563#ifdef DEBUG
564	if (a4000_flag)
565		printf("Denise ID = %04x\n", (unsigned short)custom.deniseid);
566#endif
567	if (machineid >> 16)
568		return (0);		/* It's not an A4000 */
569	return (a4000_flag);		/* Machine type not set */
570}
571
572int
573is_a1200()
574{
575	if ((machineid >> 16) == 1200)
576		return (1);		/* It's an A1200 */
577	return (0);			/* Machine type not set */
578}
579