autoconf.c revision 1.67 
1/*	$NetBSD: autoconf.c,v 1.67 2000/01/23 21:08:17 aymeric 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#include <sys/param.h>
33#include <sys/systm.h>
34#include <sys/reboot.h>
35#include <sys/conf.h>
36#include <sys/buf.h>
37#include <sys/device.h>
38#include <sys/disklabel.h>
39#include <sys/disk.h>
40#include <machine/cpu.h>
41#include <amiga/amiga/cfdev.h>
42#include <amiga/amiga/device.h>
43#include <amiga/amiga/custom.h>
44
45void findroot __P((struct device **, int *));
46void mbattach __P((struct device *, struct device *, void *));
47int mbprint __P((void *, const char *));
48int mbmatch __P((struct device *, struct cfdata *, void *));
49
50#include <sys/kernel.h>
51
52u_long boot_partition;
53
54/*
55 * called at boot time, configure all devices on system
56 */
57void
58cpu_configure()
59{
60	int s;
61#ifdef DEBUG_KERNEL_START
62	int i;
63#endif
64
65	/*
66	 * this is the real thing baby (i.e. not console init)
67	 */
68	amiga_realconfig = 1;
69#ifdef DRACO
70	if (is_draco()) {
71		*draco_intena &= ~DRIRQ_GLOBAL;
72	} else
73#endif
74	custom.intena = INTF_INTEN;
75	s = splhigh();
76
77	if (config_rootfound("mainbus", "mainbus") == NULL)
78		panic("no mainbus found");
79
80#ifdef DEBUG_KERNEL_START
81	printf("survived autoconf, going to enable interrupts\n");
82#endif
83
84#ifdef DRACO
85	if (is_draco()) {
86		*draco_intena |= DRIRQ_GLOBAL;
87		/* softints always enabled */
88	} else
89#endif
90	{
91		custom.intena = INTF_SETCLR | INTF_INTEN;
92
93		/* also enable hardware aided software interrupts */
94		custom.intena = INTF_SETCLR | INTF_SOFTINT;
95	}
96#ifdef DEBUG_KERNEL_START
97	for (i=splhigh(); i>=s ;i-=0x100) {
98		splx(i);
99		printf("%d...", (i>>8) & 7);
100	}
101	printf("survived interrupt enable\n");
102#else
103	splx(s);
104#endif
105#ifdef DEBUG_KERNEL_START
106	printf("survived configure...\n");
107#endif
108}
109
110void
111cpu_rootconf()
112{
113	struct device *booted_device;
114	int booted_partition;
115
116	findroot(&booted_device, &booted_partition);
117#ifdef DEBUG_KERNEL_START
118	printf("survived findroot()\n");
119#endif
120	setroot(booted_device, booted_partition);
121#ifdef DEBUG_KERNEL_START
122	printf("survived setroot()\n");
123#endif
124}
125
126/*ARGSUSED*/
127int
128simple_devprint(auxp, pnp)
129	void *auxp;
130	const char *pnp;
131{
132	return(QUIET);
133}
134
135int
136matchname(fp, sp)
137	char *fp, *sp;
138{
139	int len;
140
141	len = strlen(fp);
142	if (strlen(sp) != len)
143		return(0);
144	if (bcmp(fp, sp, len) == 0)
145		return(1);
146	return(0);
147}
148
149/*
150 * use config_search to find appropriate device, then call that device
151 * directly with NULL device variable storage.  A device can then
152 * always tell the difference betwean the real and console init
153 * by checking for NULL.
154 */
155int
156amiga_config_found(pcfp, pdp, auxp, pfn)
157	struct cfdata *pcfp;
158	struct device *pdp;
159	void *auxp;
160	cfprint_t pfn;
161{
162	struct device temp;
163	struct cfdata *cf;
164
165	if (amiga_realconfig)
166		return(config_found(pdp, auxp, pfn) != NULL);
167
168	if (pdp == NULL)
169		pdp = &temp;
170
171	pdp->dv_cfdata = pcfp;
172	if ((cf = config_search((cfmatch_t)NULL, pdp, auxp)) != NULL) {
173		cf->cf_attach->ca_attach(pdp, NULL, auxp);
174		pdp->dv_cfdata = NULL;
175		return(1);
176	}
177	pdp->dv_cfdata = NULL;
178	return(0);
179}
180
181/*
182 * this function needs to get enough configured to do a console
183 * basically this means start attaching the grfxx's that support
184 * the console. Kinda hacky but it works.
185 */
186void
187config_console()
188{
189	struct cfdata *cf;
190
191	/*
192	 * we need mainbus' cfdata.
193	 */
194	cf = config_rootsearch(NULL, "mainbus", "mainbus");
195	if (cf == NULL) {
196		panic("no mainbus");
197	}
198	/*
199	 * delay clock calibration.
200	 */
201	amiga_config_found(cf, NULL, "clock", NULL);
202
203	/*
204	 * internal grf.
205	 */
206#ifdef DRACO
207	if (!(is_draco()))
208#endif
209		amiga_config_found(cf, NULL, "grfcc", NULL);
210
211	/*
212	 * zbus knows when its not for real and will
213	 * only configure the appropriate hardware
214	 */
215	amiga_config_found(cf, NULL, "zbus", NULL);
216}
217
218/*
219 * mainbus driver
220 */
221struct cfattach mainbus_ca = {
222	sizeof(struct device), mbmatch, mbattach
223};
224
225int
226mbmatch(pdp, cfp, auxp)
227	struct device	*pdp;
228	struct cfdata	*cfp;
229	void		*auxp;
230{
231
232	if (cfp->cf_unit > 0)
233		return(0);
234	/*
235	 * We are always here
236	 */
237	return(1);
238}
239
240/*
241 * "find" all the things that should be there.
242 */
243void
244mbattach(pdp, dp, auxp)
245	struct device *pdp, *dp;
246	void *auxp;
247{
248	printf("\n");
249	config_found(dp, "clock", simple_devprint);
250	if (is_a3000() || is_a4000()) {
251		config_found(dp, "a34kbbc", simple_devprint);
252	} else
253#ifdef DRACO
254	if (!is_draco())
255#endif
256	{
257		config_found(dp, "a2kbbc", simple_devprint);
258	}
259#ifdef DRACO
260	if (is_draco()) {
261		config_found(dp, "drbbc", simple_devprint);
262		config_found(dp, "kbd", simple_devprint);
263		config_found(dp, "drsc", simple_devprint);
264		config_found(dp, "drsupio", simple_devprint);
265	} else
266#endif
267	{
268		config_found(dp, "ser", simple_devprint);
269		config_found(dp, "par", simple_devprint);
270		config_found(dp, "kbd", simple_devprint);
271		config_found(dp, "ms", simple_devprint);
272		config_found(dp, "ms", simple_devprint);
273		config_found(dp, "grfcc", simple_devprint);
274		config_found(dp, "fdc", simple_devprint);
275	}
276	if (is_a4000() || is_a1200())
277		config_found(dp, "idesc", simple_devprint);
278	if (is_a1200())
279		config_found(dp, "wdc", simple_devprint);
280	if (is_a4000())			/* Try to configure A4000T SCSI */
281		config_found(dp, "afsc", simple_devprint);
282	if (is_a3000())
283		config_found(dp, "ahsc", simple_devprint);
284	if (/*is_a600() || */is_a1200())
285		config_found(dp, "pccard", simple_devprint);
286#ifdef DRACO
287	if (!is_draco())
288#endif
289		config_found(dp, "aucc", simple_devprint);
290
291	config_found(dp, "zbus", simple_devprint);
292}
293
294int
295mbprint(auxp, pnp)
296	void *auxp;
297	const char *pnp;
298{
299	if (pnp)
300		printf("%s at %s", (char *)auxp, pnp);
301	return(UNCONF);
302}
303
304/*
305 * The system will assign the "booted device" indicator (and thus
306 * rootdev if rootspec is wildcarded) to the first partition 'a'
307 * in preference of boot.  However, it does walk unit backwards
308 * to remain compatible with the old Amiga method of picking the
309 * last root found.
310 */
311#include <sys/fcntl.h>		/* XXXX and all that uses it */
312#include <sys/proc.h>		/* XXXX and all that uses it */
313
314#include "fd.h"
315#include "sd.h"
316#include "cd.h"
317#include "wd.h"
318
319#if NFD > 0
320extern  struct cfdriver fd_cd;
321#endif
322#if NSD > 0
323extern  struct cfdriver sd_cd;
324#endif
325#if NCD > 0
326extern  struct cfdriver cd_cd;
327#endif
328#if NWD > 0
329extern	struct cfdriver wd_cd;
330#endif
331
332struct cfdriver *genericconf[] = {
333#if NFD > 0
334	&fd_cd,
335#endif
336#if NSD > 0
337	&sd_cd,
338#endif
339#if NCD > 0
340	&cd_cd,
341#endif
342#if NWD > 0
343	&wd_cd,
344#endif
345	NULL,
346};
347
348void
349findroot(devpp, partp)
350	struct device **devpp;
351	int *partp;
352{
353	struct disk *dkp;
354	struct partition *pp;
355	struct device **devs;
356	int i, maj, unit;
357
358	/*
359	 * Default to "not found".
360	 */
361	*devpp = NULL;
362
363	/* always partition 'a' */
364	*partp = 0;
365
366#if NSD > 0
367	/*
368	 * If we have the boot partition offset (boot_partition), try
369	 * to locate the device corresponding to that partition.
370	 */
371#ifdef DEBUG_KERNEL_START
372	printf("Boot partition offset is %ld\n", boot_partition);
373#endif
374	if (boot_partition != 0) {
375	 	struct bdevsw *bdp;
376		int i;
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 (sd_cd.cd_devs[unit] == NULL)
383				continue;
384
385			/*
386			 * Find the disk corresponding to the current
387			 * device.
388			 */
389			devs = (struct device **)sd_cd.cd_devs;
390			if ((dkp = disk_find(devs[unit]->dv_xname)) == NULL)
391				continue;
392
393			if (dkp->dk_driver == NULL ||
394			    dkp->dk_driver->d_strategy == NULL)
395				continue;
396			for (bdp = bdevsw; bdp < (bdevsw + nblkdev); bdp++)
397				if (bdp->d_strategy ==
398				    dkp->dk_driver->d_strategy)
399					break;
400			if (bdp->d_open(MAKEDISKDEV(4, unit, RAW_PART),
401			    FREAD | FNONBLOCK, 0, curproc))
402				continue;
403			bdp->d_close(MAKEDISKDEV(4, unit, RAW_PART),
404			    FREAD | FNONBLOCK, 0, curproc);
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 (*devpp == NULL) {
419						*devpp = devs[unit];
420						*partp = i;
421					} else
422						printf("Ambiguous boot device\n");
423				}
424			}
425		}
426	}
427	if (*devpp != 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 = (struct device **)genericconf[i]->cd_devs;
441			if ((dkp = disk_find(devs[unit]->dv_xname)) == NULL)
442				continue;
443
444			if (dkp->dk_driver == NULL ||
445			    dkp->dk_driver->d_strategy == NULL)
446				continue;
447
448			for (maj = 0; maj < nblkdev; maj++)
449				if (bdevsw[maj].d_strategy ==
450				    dkp->dk_driver->d_strategy)
451					break;
452#ifdef DIAGNOSTIC
453			if (maj >= nblkdev)
454				panic("findroot: impossible");
455#endif
456
457			/* Open disk; forces read of disklabel. */
458			if ((*bdevsw[maj].d_open)(MAKEDISKDEV(maj,
459			    unit, 0), FREAD|FNONBLOCK, 0, &proc0))
460				continue;
461			(void)(*bdevsw[maj].d_close)(MAKEDISKDEV(maj,
462			    unit, 0), FREAD|FNONBLOCK, 0, &proc0);
463
464			pp = &dkp->dk_label->d_partitions[0];
465			if (pp->p_size != 0 && pp->p_fstype == FS_BSDFFS) {
466				*devpp = devs[unit];
467				*partp = 0;
468				return;
469			}
470		}
471	}
472}
473
474/*
475 * Try to determine, of this machine is an A3000, which has a builtin
476 * realtime clock and scsi controller, so that this hardware is only
477 * included as "configured" if this IS an A3000
478 */
479
480int a3000_flag = 1;		/* patchable */
481#ifdef A4000
482int a4000_flag = 1;		/* patchable - default to A4000 */
483#else
484int a4000_flag = 0;		/* patchable */
485#endif
486
487int
488is_a3000()
489{
490	/* this is a dirty kludge.. but how do you do this RIGHT ? :-) */
491	extern long boot_fphystart;
492	short sc;
493
494	if ((machineid >> 16) == 3000)
495		return (1);			/* It's an A3000 */
496	if (machineid >> 16)
497		return (0);			/* It's not an A3000 */
498	/* Machine type is unknown, so try to guess it */
499	/* where is fastram on the A4000 ?? */
500	/* if fastram is below 0x07000000, assume it's not an A3000 */
501	if (boot_fphystart < 0x07000000)
502		return(0);
503	/*
504	 * OK, fastram starts at or above 0x07000000, check specific
505	 * machines
506	 */
507	for (sc = 0; sc < ncfdev; sc++) {
508		switch (cfdev[sc].rom.manid) {
509		case 2026:		/* Progressive Peripherals, Inc */
510			switch (cfdev[sc].rom.prodid) {
511			case 0:		/* PPI Mercury - A3000 */
512			case 1:		/* PP&S A3000 '040 */
513				return(1);
514			case 150:	/* PPI Zeus - it's an A2000 */
515			case 105:	/* PP&S A2000 '040 */
516			case 187:	/* PP&S A500 '040 */
517				return(0);
518			}
519			break;
520
521		case 2112:			/* IVS */
522			switch (cfdev[sc].rom.prodid) {
523			case 242:
524				return(0);	/* A2000 accelerator? */
525			}
526			break;
527		}
528	}
529	return (a3000_flag);		/* XXX let flag tell now */
530}
531
532int
533is_a4000()
534{
535	if ((machineid >> 16) == 4000)
536		return (1);		/* It's an A4000 */
537	if ((machineid >> 16) == 1200)
538		return (0);		/* It's an A1200, so not A4000 */
539#ifdef DRACO
540	if (is_draco())
541		return (0);
542#endif
543	/* Do I need this any more? */
544	if ((custom.deniseid & 0xff) == 0xf8)
545		return (1);
546#ifdef DEBUG
547	if (a4000_flag)
548		printf("Denise ID = %04x\n", (unsigned short)custom.deniseid);
549#endif
550	if (machineid >> 16)
551		return (0);		/* It's not an A4000 */
552	return (a4000_flag);		/* Machine type not set */
553}
554
555int
556is_a1200()
557{
558	if ((machineid >> 16) == 1200)
559		return (1);		/* It's an A1200 */
560	return (0);			/* Machine type not set */
561}
562