autoconf.c revision 1.117 
1/*	$NetBSD: autoconf.c,v 1.117 2014/08/24 12:18:21 mlelstv 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 1.117 2014/08/24 12:18:21 mlelstv 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#ifdef DRACO
50#include <amiga/amiga/drcustom.h>
51#endif
52#ifdef P5PB_CONSOLE
53#include <amiga/pci/p5pbvar.h>
54#endif /* P5PB_CONSOLE */
55
56#include "acafh.h"
57#if NACAFH > 0
58#include <amiga/dev/acafhvar.h>
59#endif /* NACAFH > 0 */
60
61static void findroot(void);
62void mbattach(device_t, device_t, void *);
63int mbprint(void *, const char *);
64int mbmatch(device_t, cfdata_t, void *);
65
66#include <sys/kernel.h>
67
68u_long boot_partition;
69
70int amiga_realconfig;
71
72/*
73 * called at boot time, configure all devices on system
74 */
75void
76cpu_configure(void)
77{
78	int s;
79#ifdef DEBUG_KERNEL_START
80	int i;
81#endif
82
83	/*
84	 * this is the real thing baby (i.e. not console init)
85	 */
86	amiga_realconfig = 1;
87#ifdef DRACO
88	if (is_draco()) {
89		*draco_intena &= ~DRIRQ_GLOBAL;
90	} else
91#endif
92	custom.intena = INTF_INTEN;
93	s = splhigh();
94
95	if (config_rootfound("mainbus", NULL) == NULL)
96		panic("no mainbus found");
97
98#ifdef DEBUG_KERNEL_START
99	printf("survived autoconf, going to enable interrupts\n");
100#endif
101
102#ifdef DRACO
103	if (is_draco()) {
104		*draco_intena |= DRIRQ_GLOBAL;
105		/* softints always enabled */
106	} else
107#endif
108	{
109		custom.intena = INTF_SETCLR | INTF_INTEN;
110
111		/* also enable hardware aided software interrupts */
112		custom.intena = INTF_SETCLR | INTF_SOFTINT;
113	}
114#ifdef DEBUG_KERNEL_START
115	for (i=splhigh(); i>=s ;i-=0x100) {
116		splx(i);
117		printf("%d...", (i>>8) & 7);
118	}
119	printf("survived interrupt enable\n");
120#else
121	splx(s);
122#endif
123#ifdef DEBUG_KERNEL_START
124	printf("survived configure...\n");
125#endif
126}
127
128void
129cpu_rootconf(void)
130{
131	findroot();
132#ifdef DEBUG_KERNEL_START
133	printf("survived findroot()\n");
134#endif
135	rootconf();
136}
137
138/*ARGSUSED*/
139int
140simple_devprint(void *aux, const char *pnp)
141{
142	return(QUIET);
143}
144
145int
146matchname(const char *fp, const char *sp)
147{
148	int len;
149
150	len = strlen(fp);
151	if (strlen(sp) != len)
152		return(0);
153	if (memcmp(fp, sp, len) == 0)
154		return(1);
155	return(0);
156}
157
158/*
159 * use config_search_ia to find appropriate device, then call that device
160 * directly with NULL device variable storage.  A device can then
161 * always tell the difference betwean the real and console init
162 * by checking for NULL.
163 */
164int
165amiga_config_found(cfdata_t pcfp, device_t parent, void *aux, cfprint_t pfn)
166{
167	struct device temp;
168	cfdata_t cf;
169	const struct cfattach *ca;
170
171	if (amiga_realconfig)
172		return(config_found(parent, aux, pfn) != NULL);
173
174	if (parent == NULL) {
175		memset(&temp, 0, sizeof temp);
176		parent = &temp;
177	}
178
179	parent->dv_cfdata = pcfp;
180	parent->dv_cfdriver = config_cfdriver_lookup(pcfp->cf_name);
181	parent->dv_unit = pcfp->cf_unit;
182
183	if ((cf = config_search_ia(NULL, parent, NULL, aux)) != NULL) {
184		ca = config_cfattach_lookup(cf->cf_name, cf->cf_atname);
185		if (ca != NULL) {
186			(*ca->ca_attach)(parent, NULL, aux);
187			parent->dv_cfdata = NULL;
188			return(1);
189		}
190	}
191	parent->dv_cfdata = NULL;
192	return(0);
193}
194
195/*
196 * this function needs to get enough configured to do a console
197 * basically this means start attaching the grfxx's that support
198 * the console. Kinda hacky but it works.
199 */
200void
201config_console(void)
202{
203	cfdata_t cf;
204
205	config_init();
206
207	/*
208	 * we need mainbus' cfdata.
209	 */
210	cf = config_rootsearch(NULL, "mainbus", NULL);
211	if (cf == NULL) {
212		panic("no mainbus");
213	}
214
215	/*
216	 * delay clock calibration.
217	 */
218	amiga_config_found(cf, NULL, __UNCONST("clock"), NULL);
219
220	/*
221	 * internal grf.
222	 */
223#ifdef DRACO
224	if (!(is_draco()))
225#endif
226		amiga_config_found(cf, NULL, __UNCONST("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, __UNCONST("zbus"), NULL);
233}
234
235/*
236 * mainbus driver
237 */
238CFATTACH_DECL_NEW(mainbus, 0,
239    mbmatch, mbattach, NULL, NULL);
240
241int
242mbmatch(device_t parent, cfdata_t cf, void *aux)
243{
244#if 0	/*
245	 * XXX is this right? but we need to be found twice
246	 * (early console init hack)
247	 */
248	static int mainbus_matched = 0;
249
250	/* Allow only one instance. */
251	if (mainbus_matched)
252		return (0);
253
254	mainbus_matched = 1;
255#endif
256	return (1);
257}
258
259/*
260 * "find" all the things that should be there.
261 */
262void
263mbattach(device_t parent, device_t self, void *aux)
264{
265	printf("\n");
266	config_found(self, __UNCONST("clock"), simple_devprint);
267	if (is_a3000() || is_a4000()) {
268		config_found(self, __UNCONST("a34kbbc"), simple_devprint);
269	} else
270#ifdef DRACO
271	if (!is_draco())
272#endif
273	{
274		config_found(self, __UNCONST("a2kbbc"), simple_devprint);
275	}
276#ifdef DRACO
277	if (is_draco()) {
278		config_found(self, __UNCONST("drbbc"), simple_devprint);
279		config_found(self, __UNCONST("kbd"), simple_devprint);
280		config_found(self, __UNCONST("drsc"), simple_devprint);
281		config_found(self, __UNCONST("drsupio"), simple_devprint);
282	} else
283#endif
284	{
285		config_found(self, __UNCONST("ser"), simple_devprint);
286		config_found(self, __UNCONST("par"), simple_devprint);
287		config_found(self, __UNCONST("kbd"), simple_devprint);
288		config_found(self, __UNCONST("ms"), simple_devprint);
289		config_found(self, __UNCONST("grfcc"), simple_devprint);
290		config_found(self, __UNCONST("amidisplaycc"), simple_devprint);
291		config_found(self, __UNCONST("fdc"), simple_devprint);
292	}
293	if (is_a4000() || is_a1200() || is_a600())
294		config_found(self, __UNCONST("wdc"), simple_devprint);
295	if (is_a4000())			/* Try to configure A4000T SCSI */
296		config_found(self, __UNCONST("afsc"), simple_devprint);
297	if (is_a3000())
298		config_found(self, __UNCONST("ahsc"), simple_devprint);
299	if (is_a600() || is_a1200())
300		config_found(self, __UNCONST("pccard"), simple_devprint);
301	if (is_a1200())
302		config_found(self, __UNCONST("a1k2cp"), simple_devprint);
303#ifdef DRACO
304	if (!is_draco())
305#endif
306		config_found(self, __UNCONST("aucc"), simple_devprint);
307
308#if NACAFH > 0
309	if (!is_a600() && !is_a1200() && !is_a3000() && !is_a4000())
310		if (acafh_mbattach_probe() == true)
311			config_found(self, __UNCONST("acafh"), simple_devprint);
312#endif
313
314	config_found(self, __UNCONST("zbus"), simple_devprint);
315}
316
317int
318mbprint(void *aux, const char *pnp)
319{
320	if (pnp)
321		aprint_normal("%s at %s", (char *)aux, pnp);
322	return(UNCONF);
323}
324
325/*
326 * The system will assign the "booted device" indicator (and thus
327 * rootdev if rootspec is wildcarded) to the first partition 'a'
328 * in preference of boot.  However, it does walk unit backwards
329 * to remain compatible with the old Amiga method of picking the
330 * last root found.
331 */
332#include <sys/fcntl.h>		/* XXXX and all that uses it */
333#include <sys/proc.h>		/* XXXX and all that uses it */
334
335#include "fd.h"
336#include "sd.h"
337#include "cd.h"
338#include "wd.h"
339
340#if NFD > 0
341extern  struct cfdriver fd_cd;
342extern	const struct bdevsw fd_bdevsw;
343#endif
344#if NSD > 0
345extern  struct cfdriver sd_cd;
346extern	const struct bdevsw sd_bdevsw;
347#endif
348#if NCD > 0
349extern  struct cfdriver cd_cd;
350extern	const struct bdevsw cd_bdevsw;
351#endif
352#if NWD > 0
353extern  struct cfdriver wd_cd;
354extern	const struct bdevsw wd_bdevsw;
355#endif
356
357struct cfdriver *genericconf[] = {
358#if NFD > 0
359	&fd_cd,
360#endif
361#if NSD > 0
362	&sd_cd,
363#endif
364#if NWD > 0
365	&wd_cd,
366#endif
367#if NCD > 0
368	&cd_cd,
369#endif
370	NULL,
371};
372
373void
374findroot(void)
375{
376	struct disk *dkp;
377	struct partition *pp;
378	device_t *devs;
379	int i, maj, unit;
380	const struct bdevsw *bdp;
381
382#if NSD > 0
383	/*
384	 * If we have the boot partition offset (boot_partition), try
385	 * to locate the device corresponding to that partition.
386	 */
387#ifdef DEBUG_KERNEL_START
388	printf("Boot partition offset is %ld\n", boot_partition);
389#endif
390	if (boot_partition != 0) {
391
392		for (unit = 0; unit < sd_cd.cd_ndevs; ++unit) {
393#ifdef DEBUG_KERNEL_START
394			printf("probing for sd%d\n", unit);
395#endif
396			if (device_lookup(&sd_cd,unit) == NULL)
397				continue;
398
399			/*
400			 * Find the disk corresponding to the current
401			 * device.
402			 */
403			devs = sd_cd.cd_devs;
404			if ((dkp = disk_find(device_xname(device_lookup(&sd_cd, unit)))) == NULL)
405				continue;
406
407			if (dkp->dk_driver == NULL ||
408			    dkp->dk_driver->d_strategy == NULL)
409				continue;
410			bdp = &sd_bdevsw;
411			maj = bdevsw_lookup_major(bdp);
412			if ((*bdp->d_open)(MAKEDISKDEV(maj, unit, RAW_PART),
413			    FREAD | FNONBLOCK, 0, curlwp))
414				continue;
415			(*bdp->d_close)(MAKEDISKDEV(maj, unit, RAW_PART),
416			    FREAD | FNONBLOCK, 0, curlwp);
417			pp = &dkp->dk_label->d_partitions[0];
418			for (i = 0; i < dkp->dk_label->d_npartitions;
419			    i++, pp++) {
420#ifdef DEBUG_KERNEL_START
421				printf("sd%d%c type %d offset %d size %d\n",
422					unit, i+'a', pp->p_fstype,
423					pp->p_offset, pp->p_size);
424#endif
425				if (pp->p_size == 0 ||
426				    (pp->p_fstype != FS_BSDFFS &&
427				    pp->p_fstype != FS_SWAP))
428					continue;
429				if (pp->p_offset == boot_partition) {
430					if (booted_device == NULL) {
431						booted_device = devs[unit];
432						booted_partition = i;
433					} else
434						printf("Ambiguous boot device\n");
435				}
436			}
437		}
438	}
439	if (booted_device != NULL)
440		return;		/* we found the boot device */
441#endif
442
443	for (i = 0; genericconf[i] != NULL; i++) {
444		for (unit = genericconf[i]->cd_ndevs - 1; unit >= 0; unit--) {
445			if (genericconf[i]->cd_devs[unit] == NULL)
446				continue;
447
448			/*
449			 * Find the disk structure corresponding to the
450			 * current device.
451			 */
452			devs = (device_t *)genericconf[i]->cd_devs;
453			if ((dkp = disk_find(device_xname(devs[unit]))) == NULL)
454				continue;
455
456			if (dkp->dk_driver == NULL ||
457			    dkp->dk_driver->d_strategy == NULL)
458				continue;
459
460			bdp = NULL;
461#if NFD > 0
462			if (fd_bdevsw.d_strategy == dkp->dk_driver->d_strategy)
463				bdp = &fd_bdevsw;
464#endif
465#if NSD > 0
466			if (sd_bdevsw.d_strategy == dkp->dk_driver->d_strategy)
467				bdp = &sd_bdevsw;
468#endif
469#if NWD > 0
470			if (wd_bdevsw.d_strategy == dkp->dk_driver->d_strategy)
471				bdp = &wd_bdevsw;
472#endif
473#if NCD > 0
474			if (cd_bdevsw.d_strategy == dkp->dk_driver->d_strategy)
475				bdp = &cd_bdevsw;
476#endif
477#ifdef DIAGNOSTIC
478			if (bdp == NULL)
479				panic("findroot: impossible");
480#endif
481			maj = bdevsw_lookup_major(bdp);
482
483			/* Open disk; forces read of disklabel. */
484			if ((*bdp->d_open)(MAKEDISKDEV(maj, unit, RAW_PART),
485				FREAD|FNONBLOCK, 0, &lwp0))
486				continue;
487			(void)(*bdp->d_close)(MAKEDISKDEV(maj, unit, RAW_PART),
488				FREAD|FNONBLOCK, 0, &lwp0);
489
490			pp = &dkp->dk_label->d_partitions[0];
491			if (pp->p_size != 0 && pp->p_fstype == FS_BSDFFS) {
492				booted_device = devs[unit];
493				booted_partition = 0;
494				return;
495			}
496		}
497	}
498}
499
500/*
501 * Try to determine, of this machine is an A3000, which has a builtin
502 * realtime clock and scsi controller, so that this hardware is only
503 * included as "configured" if this IS an A3000
504 */
505
506int a3000_flag = 1;		/* patchable */
507#ifdef A4000
508int a4000_flag = 1;		/* patchable - default to A4000 */
509#else
510int a4000_flag = 0;		/* patchable */
511#endif
512
513int
514is_a3000(void)
515{
516	/* this is a dirty kludge.. but how do you do this RIGHT ? :-) */
517	extern long boot_fphystart;
518	short sc;
519
520	if ((machineid >> 16) == 3000)
521		return (1);			/* It's an A3000 */
522	if (machineid >> 16)
523		return (0);			/* It's not an A3000 */
524	/* Machine type is unknown, so try to guess it */
525	/* where is fastram on the A4000 ?? */
526	/* if fastram is below 0x07000000, assume it's not an A3000 */
527	if (boot_fphystart < 0x07000000)
528		return(0);
529	/*
530	 * OK, fastram starts at or above 0x07000000, check specific
531	 * machines
532	 */
533	for (sc = 0; sc < ncfdev; sc++) {
534		switch (cfdev[sc].rom.manid) {
535		case 2026:		/* Progressive Peripherals, Inc */
536			switch (cfdev[sc].rom.prodid) {
537			case 0:		/* PPI Mercury - A3000 */
538			case 1:		/* PP&S A3000 '040 */
539				return(1);
540			case 150:	/* PPI Zeus - it's an A2000 */
541			case 105:	/* PP&S A2000 '040 */
542			case 187:	/* PP&S A500 '040 */
543				return(0);
544			}
545			break;
546
547		case 2112:			/* IVS */
548			switch (cfdev[sc].rom.prodid) {
549			case 242:
550				return(0);	/* A2000 accelerator? */
551			}
552			break;
553		}
554	}
555	return (a3000_flag);		/* XXX let flag tell now */
556}
557
558int
559is_a4000(void)
560{
561	if ((machineid >> 16) == 4000)
562		return (1);		/* It's an A4000 */
563	if ((machineid >> 16) == 1200)
564		return (0);		/* It's an A1200, so not A4000 */
565#ifdef DRACO
566	if (is_draco())
567		return (0);
568#endif
569	/* Do I need this any more? */
570	if ((custom.deniseid & 0xff) == 0xf8)
571		return (1);
572#ifdef DEBUG
573	if (a4000_flag)
574		printf("Denise ID = %04x\n", (unsigned short)custom.deniseid);
575#endif
576	if (machineid >> 16)
577		return (0);		/* It's not an A4000 */
578	return (a4000_flag);		/* Machine type not set */
579}
580
581int
582is_a1200(void)
583{
584	if ((machineid >> 16) == 1200)
585		return (1);		/* It's an A1200 */
586	return (0);			/* Machine type not set */
587}
588
589int
590is_a600(void)
591{
592	if ((machineid >> 16) == 600)
593		return (1);		/* It's an A600 */
594	return (0);			/* Machine type not set */
595}
596
597void
598device_register(device_t dev, void *aux)
599{
600#ifdef P5PB_CONSOLE
601	p5pb_device_register(dev, aux);
602#endif /* P5PB_CONSOLE */
603}
604