autoconf.c revision 1.80 
1/*	$NetBSD: autoconf.c,v 1.80 2002/01/28 09:56:45 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
33#include <sys/cdefs.h>
34__KERNEL_RCSID(0, "$NetBSD: autoconf.c,v 1.80 2002/01/28 09:56:45 aymeric 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
60/*
61 * called at boot time, configure all devices on system
62 */
63void
64cpu_configure()
65{
66	int s;
67#ifdef DEBUG_KERNEL_START
68	int i;
69#endif
70
71	/*
72	 * this is the real thing baby (i.e. not console init)
73	 */
74	amiga_realconfig = 1;
75#ifdef DRACO
76	if (is_draco()) {
77		*draco_intena &= ~DRIRQ_GLOBAL;
78	} else
79#endif
80	custom.intena = INTF_INTEN;
81	s = splhigh();
82
83	if (config_rootfound("mainbus", "mainbus") == NULL)
84		panic("no mainbus found");
85
86#ifdef DEBUG_KERNEL_START
87	printf("survived autoconf, going to enable interrupts\n");
88#endif
89
90#ifdef DRACO
91	if (is_draco()) {
92		*draco_intena |= DRIRQ_GLOBAL;
93		/* softints always enabled */
94	} else
95#endif
96	{
97		custom.intena = INTF_SETCLR | INTF_INTEN;
98
99		/* also enable hardware aided software interrupts */
100		custom.intena = INTF_SETCLR | INTF_SOFTINT;
101	}
102#ifdef DEBUG_KERNEL_START
103	for (i=splhigh(); i>=s ;i-=0x100) {
104		splx(i);
105		printf("%d...", (i>>8) & 7);
106	}
107	printf("survived interrupt enable\n");
108#else
109	splx(s);
110#endif
111#ifdef DEBUG_KERNEL_START
112	printf("survived configure...\n");
113#endif
114}
115
116void
117cpu_rootconf()
118{
119	findroot();
120#ifdef DEBUG_KERNEL_START
121	printf("survived findroot()\n");
122#endif
123	setroot(booted_device, booted_partition);
124#ifdef DEBUG_KERNEL_START
125	printf("survived setroot()\n");
126#endif
127}
128
129/*ARGSUSED*/
130int
131simple_devprint(auxp, pnp)
132	void *auxp;
133	const char *pnp;
134{
135	return(QUIET);
136}
137
138int
139matchname(fp, sp)
140	char *fp, *sp;
141{
142	int len;
143
144	len = strlen(fp);
145	if (strlen(sp) != len)
146		return(0);
147	if (bcmp(fp, sp, len) == 0)
148		return(1);
149	return(0);
150}
151
152/*
153 * use config_search to find appropriate device, then call that device
154 * directly with NULL device variable storage.  A device can then
155 * always tell the difference betwean the real and console init
156 * by checking for NULL.
157 */
158int
159amiga_config_found(pcfp, pdp, auxp, pfn)
160	struct cfdata *pcfp;
161	struct device *pdp;
162	void *auxp;
163	cfprint_t pfn;
164{
165	struct device temp;
166	struct cfdata *cf;
167
168	if (amiga_realconfig)
169		return(config_found(pdp, auxp, pfn) != NULL);
170
171	if (pdp == NULL)
172		pdp = &temp;
173
174	pdp->dv_cfdata = pcfp;
175	if ((cf = config_search((cfmatch_t)NULL, pdp, auxp)) != NULL) {
176		cf->cf_attach->ca_attach(pdp, NULL, auxp);
177		pdp->dv_cfdata = NULL;
178		return(1);
179	}
180	pdp->dv_cfdata = NULL;
181	return(0);
182}
183
184/*
185 * this function needs to get enough configured to do a console
186 * basically this means start attaching the grfxx's that support
187 * the console. Kinda hacky but it works.
188 */
189void
190config_console()
191{
192	struct cfdata *cf;
193
194	/*
195	 * we need mainbus' cfdata.
196	 */
197	cf = config_rootsearch(NULL, "mainbus", "mainbus");
198	if (cf == NULL) {
199		panic("no mainbus");
200	}
201	/*
202	 * delay clock calibration.
203	 */
204	amiga_config_found(cf, NULL, "clock", NULL);
205
206	/*
207	 * internal grf.
208	 */
209#ifdef DRACO
210	if (!(is_draco()))
211#endif
212		amiga_config_found(cf, NULL, "grfcc", NULL);
213
214	/*
215	 * zbus knows when its not for real and will
216	 * only configure the appropriate hardware
217	 */
218	amiga_config_found(cf, NULL, "zbus", NULL);
219}
220
221/*
222 * mainbus driver
223 */
224struct cfattach mainbus_ca = {
225	sizeof(struct device), mbmatch, mbattach
226};
227
228int
229mbmatch(pdp, cfp, auxp)
230	struct device	*pdp;
231	struct cfdata	*cfp;
232	void		*auxp;
233{
234#if 0	/*
235	 * XXX is this right? but we need to be found twice
236	 * (early console init hack)
237	 */
238	static int mainbus_matched = 0;
239
240	/* Allow only one instance. */
241	if (mainbus_matched)
242		return (0);
243
244	mainbus_matched = 1;
245#endif
246	return (1);
247}
248
249/*
250 * "find" all the things that should be there.
251 */
252void
253mbattach(pdp, dp, auxp)
254	struct device *pdp, *dp;
255	void *auxp;
256{
257	printf("\n");
258	config_found(dp, "clock", simple_devprint);
259	if (is_a3000() || is_a4000()) {
260		config_found(dp, "a34kbbc", simple_devprint);
261	} else
262#ifdef DRACO
263	if (!is_draco())
264#endif
265	{
266		config_found(dp, "a2kbbc", simple_devprint);
267	}
268#ifdef DRACO
269	if (is_draco()) {
270		config_found(dp, "drbbc", simple_devprint);
271		config_found(dp, "kbd", simple_devprint);
272		config_found(dp, "drsc", simple_devprint);
273		config_found(dp, "drsupio", simple_devprint);
274	} else
275#endif
276	{
277		config_found(dp, "ser", simple_devprint);
278		config_found(dp, "par", simple_devprint);
279		config_found(dp, "kbd", simple_devprint);
280		config_found(dp, "ms", simple_devprint);
281		config_found(dp, "grfcc", simple_devprint);
282		config_found(dp, "amidisplaycc", simple_devprint);
283		config_found(dp, "fdc", simple_devprint);
284	}
285	if (is_a4000() || is_a1200()) {
286		config_found(dp, "wdc", simple_devprint);
287		config_found(dp, "idesc", simple_devprint);
288	}
289	if (is_a4000())			/* Try to configure A4000T SCSI */
290		config_found(dp, "afsc", simple_devprint);
291	if (is_a3000())
292		config_found(dp, "ahsc", simple_devprint);
293	if (/*is_a600() || */is_a1200())
294		config_found(dp, "pccard", simple_devprint);
295#ifdef DRACO
296	if (!is_draco())
297#endif
298		config_found(dp, "aucc", simple_devprint);
299
300	config_found(dp, "zbus", simple_devprint);
301}
302
303int
304mbprint(auxp, pnp)
305	void *auxp;
306	const char *pnp;
307{
308	if (pnp)
309		printf("%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;
330#endif
331#if NSD > 0
332extern  struct cfdriver sd_cd;
333#endif
334#if NCD > 0
335extern  struct cfdriver cd_cd;
336#endif
337#if NWD > 0
338extern  struct cfdriver wd_cd;
339#endif
340
341struct cfdriver *genericconf[] = {
342#if NFD > 0
343	&fd_cd,
344#endif
345#if NSD > 0
346	&sd_cd,
347#endif
348#if NWD > 0
349	&wd_cd,
350#endif
351#if NCD > 0
352	&cd_cd,
353#endif
354	NULL,
355};
356
357void
358findroot(void)
359{
360	struct disk *dkp;
361	struct partition *pp;
362	struct device **devs;
363	int i, maj, unit;
364
365#if NSD > 0
366	/*
367	 * If we have the boot partition offset (boot_partition), try
368	 * to locate the device corresponding to that partition.
369	 */
370#ifdef DEBUG_KERNEL_START
371	printf("Boot partition offset is %ld\n", boot_partition);
372#endif
373	if (boot_partition != 0) {
374	 	struct bdevsw *bdp;
375		int i;
376
377		for (unit = 0; unit < sd_cd.cd_ndevs; ++unit) {
378#ifdef DEBUG_KERNEL_START
379			printf("probing for sd%d\n", unit);
380#endif
381			if (sd_cd.cd_devs[unit] == NULL)
382				continue;
383
384			/*
385			 * Find the disk corresponding to the current
386			 * device.
387			 */
388			devs = (struct device **)sd_cd.cd_devs;
389			if ((dkp = disk_find(devs[unit]->dv_xname)) == NULL)
390				continue;
391
392			if (dkp->dk_driver == NULL ||
393			    dkp->dk_driver->d_strategy == NULL)
394				continue;
395			for (bdp = bdevsw; bdp < (bdevsw + nblkdev); bdp++)
396				if (bdp->d_strategy ==
397				    dkp->dk_driver->d_strategy)
398					break;
399			if (bdp->d_open(MAKEDISKDEV(4, unit, RAW_PART),
400			    FREAD | FNONBLOCK, 0, curproc))
401				continue;
402			bdp->d_close(MAKEDISKDEV(4, unit, RAW_PART),
403			    FREAD | FNONBLOCK, 0, curproc);
404			pp = &dkp->dk_label->d_partitions[0];
405			for (i = 0; i < dkp->dk_label->d_npartitions;
406			    i++, pp++) {
407#ifdef DEBUG_KERNEL_START
408				printf("sd%d%c type %d offset %d size %d\n",
409					unit, i+'a', pp->p_fstype,
410					pp->p_offset, pp->p_size);
411#endif
412				if (pp->p_size == 0 ||
413				    (pp->p_fstype != FS_BSDFFS &&
414				    pp->p_fstype != FS_SWAP))
415					continue;
416				if (pp->p_offset == boot_partition) {
417					if (booted_device == NULL) {
418						booted_device = devs[unit];
419						booted_partition = i;
420					} else
421						printf("Ambiguous boot device\n");
422				}
423			}
424		}
425	}
426	if (booted_device != NULL)
427		return;		/* we found the boot device */
428#endif
429
430	for (i = 0; genericconf[i] != NULL; i++) {
431		for (unit = genericconf[i]->cd_ndevs - 1; unit >= 0; unit--) {
432			if (genericconf[i]->cd_devs[unit] == NULL)
433				continue;
434
435			/*
436			 * Find the disk structure corresponding to the
437			 * current device.
438			 */
439			devs = (struct device **)genericconf[i]->cd_devs;
440			if ((dkp = disk_find(devs[unit]->dv_xname)) == NULL)
441				continue;
442
443			if (dkp->dk_driver == NULL ||
444			    dkp->dk_driver->d_strategy == NULL)
445				continue;
446
447			for (maj = 0; maj < nblkdev; maj++)
448				if (bdevsw[maj].d_strategy ==
449				    dkp->dk_driver->d_strategy)
450					break;
451#ifdef DIAGNOSTIC
452			if (maj >= nblkdev)
453				panic("findroot: impossible");
454#endif
455
456			/* Open disk; forces read of disklabel. */
457			if ((*bdevsw[maj].d_open)(MAKEDISKDEV(maj,
458			    unit, 0), FREAD|FNONBLOCK, 0, &proc0))
459				continue;
460			(void)(*bdevsw[maj].d_close)(MAKEDISKDEV(maj,
461			    unit, 0), FREAD|FNONBLOCK, 0, &proc0);
462
463			pp = &dkp->dk_label->d_partitions[0];
464			if (pp->p_size != 0 && pp->p_fstype == FS_BSDFFS) {
465				booted_device = devs[unit];
466				booted_partition = 0;
467				return;
468			}
469		}
470	}
471}
472
473/*
474 * Try to determine, of this machine is an A3000, which has a builtin
475 * realtime clock and scsi controller, so that this hardware is only
476 * included as "configured" if this IS an A3000
477 */
478
479int a3000_flag = 1;		/* patchable */
480#ifdef A4000
481int a4000_flag = 1;		/* patchable - default to A4000 */
482#else
483int a4000_flag = 0;		/* patchable */
484#endif
485
486int
487is_a3000()
488{
489	/* this is a dirty kludge.. but how do you do this RIGHT ? :-) */
490	extern long boot_fphystart;
491	short sc;
492
493	if ((machineid >> 16) == 3000)
494		return (1);			/* It's an A3000 */
495	if (machineid >> 16)
496		return (0);			/* It's not an A3000 */
497	/* Machine type is unknown, so try to guess it */
498	/* where is fastram on the A4000 ?? */
499	/* if fastram is below 0x07000000, assume it's not an A3000 */
500	if (boot_fphystart < 0x07000000)
501		return(0);
502	/*
503	 * OK, fastram starts at or above 0x07000000, check specific
504	 * machines
505	 */
506	for (sc = 0; sc < ncfdev; sc++) {
507		switch (cfdev[sc].rom.manid) {
508		case 2026:		/* Progressive Peripherals, Inc */
509			switch (cfdev[sc].rom.prodid) {
510			case 0:		/* PPI Mercury - A3000 */
511			case 1:		/* PP&S A3000 '040 */
512				return(1);
513			case 150:	/* PPI Zeus - it's an A2000 */
514			case 105:	/* PP&S A2000 '040 */
515			case 187:	/* PP&S A500 '040 */
516				return(0);
517			}
518			break;
519
520		case 2112:			/* IVS */
521			switch (cfdev[sc].rom.prodid) {
522			case 242:
523				return(0);	/* A2000 accelerator? */
524			}
525			break;
526		}
527	}
528	return (a3000_flag);		/* XXX let flag tell now */
529}
530
531int
532is_a4000()
533{
534	if ((machineid >> 16) == 4000)
535		return (1);		/* It's an A4000 */
536	if ((machineid >> 16) == 1200)
537		return (0);		/* It's an A1200, so not A4000 */
538#ifdef DRACO
539	if (is_draco())
540		return (0);
541#endif
542	/* Do I need this any more? */
543	if ((custom.deniseid & 0xff) == 0xf8)
544		return (1);
545#ifdef DEBUG
546	if (a4000_flag)
547		printf("Denise ID = %04x\n", (unsigned short)custom.deniseid);
548#endif
549	if (machineid >> 16)
550		return (0);		/* It's not an A4000 */
551	return (a4000_flag);		/* Machine type not set */
552}
553
554int
555is_a1200()
556{
557	if ((machineid >> 16) == 1200)
558		return (1);		/* It's an A1200 */
559	return (0);			/* Machine type not set */
560}
561