autoconf.c revision 1.62 
1/*	$NetBSD: autoconf.c,v 1.62 1999/03/19 21:40:24 is 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
50int cold;	/* 1 if still booting */
51#include <sys/kernel.h>
52
53struct devnametobdevmaj amiga_nam2blk[] = {
54	{ "fd",		2 },
55	{ "sd",		4 },
56	{ "cd",		7 },
57	{ "md",		15 },
58	{ NULL,		0 },
59};
60u_long boot_partition;
61
62/*
63 * called at boot time, configure all devices on system
64 */
65void
66configure()
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	cold = 0;
114}
115
116void
117cpu_rootconf()
118{
119	struct device *booted_device;
120	int booted_partition;
121
122	findroot(&booted_device, &booted_partition);
123#ifdef DEBUG_KERNEL_START
124	printf("survived findroot()\n");
125#endif
126	setroot(booted_device, booted_partition, amiga_nam2blk);
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
171	if (amiga_realconfig)
172		return(config_found(pdp, auxp, pfn) != NULL);
173
174	if (pdp == NULL)
175		pdp = &temp;
176
177	pdp->dv_cfdata = pcfp;
178	if ((cf = config_search((cfmatch_t)NULL, pdp, auxp)) != NULL) {
179		cf->cf_attach->ca_attach(pdp, NULL, auxp);
180		pdp->dv_cfdata = NULL;
181		return(1);
182	}
183	pdp->dv_cfdata = NULL;
184	return(0);
185}
186
187/*
188 * this function needs to get enough configured to do a console
189 * basically this means start attaching the grfxx's that support
190 * the console. Kinda hacky but it works.
191 */
192void
193config_console()
194{
195	struct cfdata *cf;
196
197	/*
198	 * we need mainbus' cfdata.
199	 */
200	cf = config_rootsearch(NULL, "mainbus", "mainbus");
201	if (cf == NULL) {
202		panic("no mainbus");
203	}
204	/*
205	 * delay clock calibration.
206	 */
207	amiga_config_found(cf, NULL, "clock", NULL);
208
209	/*
210	 * internal grf.
211	 */
212#ifdef DRACO
213	if (!(is_draco()))
214#endif
215		amiga_config_found(cf, NULL, "grfcc", NULL);
216	/*
217	 * zbus knows when its not for real and will
218	 * only configure the appropriate hardware
219	 */
220	amiga_config_found(cf, NULL, "zbus", NULL);
221}
222
223/*
224 * mainbus driver
225 */
226struct cfattach mainbus_ca = {
227	sizeof(struct device), mbmatch, mbattach
228};
229
230int
231mbmatch(pdp, cfp, auxp)
232	struct device	*pdp;
233	struct cfdata	*cfp;
234	void		*auxp;
235{
236
237	if (cfp->cf_unit > 0)
238		return(0);
239	/*
240	 * We are always here
241	 */
242	return(1);
243}
244
245/*
246 * "find" all the things that should be there.
247 */
248void
249mbattach(pdp, dp, auxp)
250	struct device *pdp, *dp;
251	void *auxp;
252{
253	printf("\n");
254	config_found(dp, "clock", simple_devprint);
255	if (is_a3000() || is_a4000()) {
256		config_found(dp, "a34kbbc", simple_devprint);
257	} else
258#ifdef DRACO
259	if (!is_draco())
260#endif
261	{
262		config_found(dp, "a2kbbc", simple_devprint);
263	}
264#ifdef DRACO
265	if (is_draco()) {
266		config_found(dp, "drbbc", simple_devprint);
267		config_found(dp, "kbd", simple_devprint);
268		config_found(dp, "drsc", simple_devprint);
269		config_found(dp, "drsupio", simple_devprint);
270	} else
271#endif
272	{
273		config_found(dp, "ser", simple_devprint);
274		config_found(dp, "par", simple_devprint);
275		config_found(dp, "kbd", simple_devprint);
276		config_found(dp, "ms", simple_devprint);
277		config_found(dp, "ms", simple_devprint);
278		config_found(dp, "grfcc", simple_devprint);
279		config_found(dp, "fdc", simple_devprint);
280	}
281	if (is_a4000() || is_a1200())
282		config_found(dp, "idesc", simple_devprint);
283	if (is_a4000())			/* Try to configure A4000T SCSI */
284		config_found(dp, "afsc", simple_devprint);
285	if (is_a3000())
286		config_found(dp, "ahsc", simple_devprint);
287#ifdef DRACO
288	if (!is_draco())
289#endif
290		config_found(dp, "aucc", simple_devprint);
291
292	config_found(dp, "zbus", simple_devprint);
293}
294
295int
296mbprint(auxp, pnp)
297	void *auxp;
298	const char *pnp;
299{
300	if (pnp)
301		printf("%s at %s", (char *)auxp, pnp);
302	return(UNCONF);
303}
304
305/*
306 * The system will assign the "booted device" indicator (and thus
307 * rootdev if rootspec is wildcarded) to the first partition 'a'
308 * in preference of boot.  However, it does walk unit backwards
309 * to remain compatible with the old Amiga method of picking the
310 * last root found.
311 */
312#include <sys/fcntl.h>		/* XXXX and all that uses it */
313#include <sys/proc.h>		/* XXXX and all that uses it */
314
315#include "fd.h"
316#include "sd.h"
317#include "cd.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
329struct cfdriver *genericconf[] = {
330#if NFD > 0
331	&fd_cd,
332#endif
333#if NSD > 0
334	&sd_cd,
335#endif
336#if NCD > 0
337	&cd_cd,
338#endif
339	NULL,
340};
341
342void
343findroot(devpp, partp)
344	struct device **devpp;
345	int *partp;
346{
347	struct disk *dkp;
348	struct partition *pp;
349	struct device **devs;
350	int i, maj, unit;
351
352	/*
353	 * Default to "not found".
354	 */
355	*devpp = NULL;
356
357	/* always partition 'a' */
358	*partp = 0;
359
360#if NSD > 0
361	/*
362	 * If we have the boot partition offset (boot_partition), try
363	 * to locate the device corresponding to that partition.
364	 */
365#ifdef DEBUG_KERNEL_START
366	printf("Boot partition offset is %ld\n", boot_partition);
367#endif
368	if (boot_partition != 0) {
369	 	struct bdevsw *bdp;
370		int i;
371
372		for (unit = 0; unit < sd_cd.cd_ndevs; ++unit) {
373#ifdef DEBUG_KERNEL_START
374			printf("probing for sd%d\n", unit);
375#endif
376			if (sd_cd.cd_devs[unit] == NULL)
377				continue;
378
379			/*
380			 * Find the disk corresponding to the current
381			 * device.
382			 */
383			devs = (struct device **)sd_cd.cd_devs;
384			if ((dkp = disk_find(devs[unit]->dv_xname)) == NULL)
385				continue;
386
387			if (dkp->dk_driver == NULL ||
388			    dkp->dk_driver->d_strategy == NULL)
389				continue;
390			for (bdp = bdevsw; bdp < (bdevsw + nblkdev); bdp++)
391				if (bdp->d_strategy ==
392				    dkp->dk_driver->d_strategy)
393					break;
394			if (bdp->d_open(MAKEDISKDEV(4, unit, RAW_PART),
395			    FREAD | FNONBLOCK, 0, curproc))
396				continue;
397			bdp->d_close(MAKEDISKDEV(4, unit, RAW_PART),
398			    FREAD | FNONBLOCK, 0, curproc);
399			pp = &dkp->dk_label->d_partitions[0];
400			for (i = 0; i < dkp->dk_label->d_npartitions;
401			    i++, pp++) {
402#ifdef DEBUG_KERNEL_START
403				printf("sd%d%c type %d offset %d size %d\n",
404					unit, i+'a', pp->p_fstype,
405					pp->p_offset, pp->p_size);
406#endif
407				if (pp->p_size == 0 ||
408				    (pp->p_fstype != FS_BSDFFS &&
409				    pp->p_fstype != FS_SWAP))
410					continue;
411				if (pp->p_offset == boot_partition) {
412					if (*devpp == NULL) {
413						*devpp = devs[unit];
414						*partp = i;
415					} else
416						printf("Ambiguous boot device\n");
417				}
418			}
419		}
420	}
421	if (*devpp != NULL)
422		return;		/* we found the boot device */
423#endif
424
425	for (i = 0; genericconf[i] != NULL; i++) {
426		for (unit = genericconf[i]->cd_ndevs - 1; unit >= 0; unit--) {
427			if (genericconf[i]->cd_devs[unit] == NULL)
428				continue;
429
430			/*
431			 * Find the disk structure corresponding to the
432			 * current device.
433			 */
434			devs = (struct device **)genericconf[i]->cd_devs;
435			if ((dkp = disk_find(devs[unit]->dv_xname)) == NULL)
436				continue;
437
438			if (dkp->dk_driver == NULL ||
439			    dkp->dk_driver->d_strategy == NULL)
440				continue;
441
442			for (maj = 0; maj < nblkdev; maj++)
443				if (bdevsw[maj].d_strategy ==
444				    dkp->dk_driver->d_strategy)
445					break;
446#ifdef DIAGNOSTIC
447			if (maj >= nblkdev)
448				panic("findroot: impossible");
449#endif
450
451			/* Open disk; forces read of disklabel. */
452			if ((*bdevsw[maj].d_open)(MAKEDISKDEV(maj,
453			    unit, 0), FREAD|FNONBLOCK, 0, &proc0))
454				continue;
455			(void)(*bdevsw[maj].d_close)(MAKEDISKDEV(maj,
456			    unit, 0), FREAD|FNONBLOCK, 0, &proc0);
457
458			pp = &dkp->dk_label->d_partitions[0];
459			if (pp->p_size != 0 && pp->p_fstype == FS_BSDFFS) {
460				*devpp = devs[unit];
461				*partp = 0;
462				return;
463			}
464		}
465	}
466}
467
468/*
469 * Try to determine, of this machine is an A3000, which has a builtin
470 * realtime clock and scsi controller, so that this hardware is only
471 * included as "configured" if this IS an A3000
472 */
473
474int a3000_flag = 1;		/* patchable */
475#ifdef A4000
476int a4000_flag = 1;		/* patchable - default to A4000 */
477#else
478int a4000_flag = 0;		/* patchable */
479#endif
480
481int
482is_a3000()
483{
484	/* this is a dirty kludge.. but how do you do this RIGHT ? :-) */
485	extern long boot_fphystart;
486	short sc;
487
488	if ((machineid >> 16) == 3000)
489		return (1);			/* It's an A3000 */
490	if (machineid >> 16)
491		return (0);			/* It's not an A3000 */
492	/* Machine type is unknown, so try to guess it */
493	/* where is fastram on the A4000 ?? */
494	/* if fastram is below 0x07000000, assume it's not an A3000 */
495	if (boot_fphystart < 0x07000000)
496		return(0);
497	/*
498	 * OK, fastram starts at or above 0x07000000, check specific
499	 * machines
500	 */
501	for (sc = 0; sc < ncfdev; sc++) {
502		switch (cfdev[sc].rom.manid) {
503		case 2026:		/* Progressive Peripherals, Inc */
504			switch (cfdev[sc].rom.prodid) {
505			case 0:		/* PPI Mercury - A3000 */
506			case 1:		/* PP&S A3000 '040 */
507				return(1);
508			case 150:	/* PPI Zeus - it's an A2000 */
509			case 105:	/* PP&S A2000 '040 */
510			case 187:	/* PP&S A500 '040 */
511				return(0);
512			}
513			break;
514
515		case 2112:			/* IVS */
516			switch (cfdev[sc].rom.prodid) {
517			case 242:
518				return(0);	/* A2000 accelerator? */
519			}
520			break;
521		}
522	}
523	return (a3000_flag);		/* XXX let flag tell now */
524}
525
526int
527is_a4000()
528{
529	if ((machineid >> 16) == 4000)
530		return (1);		/* It's an A4000 */
531	if ((machineid >> 16) == 1200)
532		return (0);		/* It's an A1200, so not A4000 */
533#ifdef DRACO
534	if (is_draco())
535		return (0);
536#endif
537	/* Do I need this any more? */
538	if ((custom.deniseid & 0xff) == 0xf8)
539		return (1);
540#ifdef DEBUG
541	if (a4000_flag)
542		printf("Denise ID = %04x\n", (unsigned short)custom.deniseid);
543#endif
544	if (machineid >> 16)
545		return (0);		/* It's not an A4000 */
546	return (a4000_flag);		/* Machine type not set */
547}
548
549int
550is_a1200()
551{
552	if ((machineid >> 16) == 1200)
553		return (1);		/* It's an A1200 */
554	return (0);			/* Machine type not set */
555}
556