autoconf.c revision 1.36 
1/*	$NetBSD: autoconf.c,v 1.36 1996/05/09 20:30:33 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/device.h>
37#include <sys/disklabel.h>
38#include <machine/cpu.h>
39#include <amiga/amiga/cfdev.h>
40#include <amiga/amiga/device.h>
41#include <amiga/amiga/custom.h>
42
43void setroot __P((void));
44void swapconf __P((void));
45void mbattach __P((struct device *, struct device *, void *));
46int mbprint __P((void *, char *));
47int mbmatch __P((struct device *, void *, void *));
48
49int cold;	/* 1 if still booting */
50#include <sys/kernel.h>
51/*
52 * called at boot time, configure all devices on system
53 */
54void
55configure()
56{
57	/*
58	 * this is the real thing baby (i.e. not console init)
59	 */
60	amiga_realconfig = 1;
61#ifdef DRACO
62	if (is_draco()) {
63		*draco_intena &= ~DRIRQ_GLOBAL;
64	} else
65#endif
66	custom.intena = INTF_INTEN;
67
68	if (config_rootfound("mainbus", "mainbus") == NULL)
69		panic("no mainbus found");
70
71	printf("survived autoconf, going to enable interrupts\n");
72
73#ifdef DRACO
74	if (is_draco()) {
75		*draco_intena |= DRIRQ_GLOBAL;
76		/* softints always enabled */
77	} else
78#endif
79	{
80		custom.intena = INTF_SETCLR | INTF_INTEN;
81
82		/* also enable hardware aided software interrupts */
83		custom.intena = INTF_SETCLR | INTF_SOFTINT;
84	}
85	printf("survived interrupt enable\n");
86
87#ifdef GENERIC
88	if ((boothowto & RB_ASKNAME) == 0) {
89		setroot();
90		printf("survived setroot()\n");
91	}
92	setconf();
93	printf("survived setconf()\n");
94#else
95	setroot();
96	printf("survived setroot()\n");
97#endif
98	printf("survived root device search\n");
99	swapconf();
100	printf("survived swap device search\n");
101	cold = 0;
102}
103
104/*ARGSUSED*/
105int
106simple_devprint(auxp, pnp)
107	void *auxp;
108	char *pnp;
109{
110	return(QUIET);
111}
112
113int
114matchname(fp, sp)
115	char *fp, *sp;
116{
117	int len;
118
119	len = strlen(fp);
120	if (strlen(sp) != len)
121		return(0);
122	if (bcmp(fp, sp, len) == 0)
123		return(1);
124	return(0);
125}
126
127/*
128 * use config_search to find appropriate device, then call that device
129 * directly with NULL device variable storage.  A device can then
130 * always tell the difference betwean the real and console init
131 * by checking for NULL.
132 */
133int
134amiga_config_found(pcfp, pdp, auxp, pfn)
135	struct cfdata *pcfp;
136	struct device *pdp;
137	void *auxp;
138	cfprint_t pfn;
139{
140	struct device temp;
141	struct cfdata *cf;
142
143	if (amiga_realconfig)
144		return(config_found(pdp, auxp, pfn) != NULL);
145
146	if (pdp == NULL)
147		pdp = &temp;
148
149	pdp->dv_cfdata = pcfp;
150	if ((cf = config_search((cfmatch_t)NULL, pdp, auxp)) != NULL) {
151		cf->cf_attach->ca_attach(pdp, NULL, auxp);
152		pdp->dv_cfdata = NULL;
153		return(1);
154	}
155	pdp->dv_cfdata = NULL;
156	return(0);
157}
158
159/*
160 * this function needs to get enough configured to do a console
161 * basically this means start attaching the grfxx's that support
162 * the console. Kinda hacky but it works.
163 */
164void
165config_console()
166{
167	struct cfdata *cf;
168
169	int i;
170
171	/*
172	 * we need mainbus' cfdata.
173	 */
174	cf = config_rootsearch(NULL, "mainbus", "mainbus");
175	if (cf == NULL) {
176		panic("no mainbus");
177	}
178	/*
179	 * internal grf.
180	 */
181#ifdef DRACO
182	if (!(is_draco()))
183#endif
184		amiga_config_found(cf, NULL, "grfcc", NULL);
185	/*
186	 * zbus knows when its not for real and will
187	 * only configure the appropriate hardware
188	 */
189	amiga_config_found(cf, NULL, "zbus", NULL);
190}
191
192/*
193 * mainbus driver
194 */
195struct cfattach mainbus_ca = {
196	sizeof(struct device), mbmatch, mbattach
197};
198
199struct cfdriver mainbus_cd = {
200	NULL, "mainbus", DV_DULL, NULL, 0
201};
202
203int
204mbmatch(pdp, match, auxp)
205	struct device *pdp;
206	void *match, *auxp;
207{
208	struct cfdata *cfp = match;
209
210	if (cfp->cf_unit > 0)
211		return(0);
212	/*
213	 * We are always here
214	 */
215	return(1);
216}
217
218/*
219 * "find" all the things that should be there.
220 */
221void
222mbattach(pdp, dp, auxp)
223	struct device *pdp, *dp;
224	void *auxp;
225{
226	printf ("\n");
227	config_found(dp, "clock", simple_devprint);
228#ifdef DRACO
229	if (is_draco()) {
230		config_found(dp, "kbd", simple_devprint);
231		config_found(dp, "drsc", simple_devprint);
232		/*
233		 * XXX -- missing here:
234		 * SuperIO chip serial, parallel, floppy
235		 * or maybe just make that into a pseudo
236		 * ISA bus.
237		 */
238	} else
239#endif
240	{
241		config_found(dp, "ser", simple_devprint);
242		config_found(dp, "par", simple_devprint);
243		config_found(dp, "kbd", simple_devprint);
244		config_found(dp, "ms", simple_devprint);
245		config_found(dp, "ms", simple_devprint);
246		config_found(dp, "grfcc", simple_devprint);
247		config_found(dp, "fdc", simple_devprint);
248	}
249	if (is_a4000() || is_a1200())
250		config_found(dp, "idesc", simple_devprint);
251	if (is_a4000())			/* Try to configure A4000T SCSI */
252		config_found(dp, "afsc", simple_devprint);
253	config_found(dp, "zbus", simple_devprint);
254	if (is_a3000())
255		config_found(dp, "ahsc", simple_devprint);
256}
257
258int
259mbprint(auxp, pnp)
260	void *auxp;
261	char *pnp;
262{
263	if (pnp)
264		printf("%s at %s", (char *)auxp, pnp);
265	return(UNCONF);
266}
267
268void
269swapconf()
270{
271	struct swdevt *swp;
272	u_int maj;
273	int nb;
274
275	for (swp = swdevt; swp->sw_dev > 0; swp++) {
276		maj = major(swp->sw_dev);
277
278		if (maj > nblkdev)
279			break;
280
281		if (bdevsw[maj].d_psize) {
282			nb = bdevsw[maj].d_psize(swp->sw_dev);
283			if (nb > 0 &&
284			    (swp->sw_nblks == 0 || swp->sw_nblks > nb))
285				swp->sw_nblks = nb;
286			else
287				swp->sw_nblks = 0;
288		}
289		swp->sw_nblks = ctod(dtoc(swp->sw_nblks));
290	}
291	if (dumplo == 0 && bdevsw[major(dumpdev)].d_psize)
292	/*dumplo = (*bdevsw[major(dumpdev)].d_psize)(dumpdev) - physmem;*/
293		dumplo = (*bdevsw[major(dumpdev)].d_psize)(dumpdev) -
294			ctob(physmem)/DEV_BSIZE;
295	if (dumplo < 0)
296		dumplo = 0;
297
298}
299
300#define	DOSWAP			/* change swdevt and dumpdev */
301u_long	bootdev = 0;		/* should be dev_t, but not until 32 bits */
302
303static	char devname[][2] = {
304	{ 0	,0	},
305	{ 0	,0	},
306	{ 'f'	,'d'	},	/* 2 = fd */
307	{ 0	,0	},
308	{ 's'	,'d'	}	/* 4 = sd -- new SCSI system */
309};
310
311void
312setroot()
313{
314	int majdev, mindev, unit, part, adaptor;
315	dev_t temp = 0;
316	dev_t orootdev;
317	struct swdevt *swp;
318
319	if (boothowto & RB_DFLTROOT ||
320	    (bootdev & B_MAGICMASK) != (u_long)B_DEVMAGIC)
321		return;
322	majdev = (bootdev >> B_TYPESHIFT) & B_TYPEMASK;
323	if (majdev > sizeof(devname) / sizeof(devname[0]))
324		return;
325	adaptor = (bootdev >> B_ADAPTORSHIFT) & B_ADAPTORMASK;
326	part = (bootdev >> B_PARTITIONSHIFT) & B_PARTITIONMASK;
327	unit = (bootdev >> B_UNITSHIFT) & B_UNITMASK;
328	orootdev = rootdev;
329	rootdev = MAKEDISKDEV(majdev, unit, part);
330	/*
331	 * If the original rootdev is the same as the one
332	 * just calculated, don't need to adjust the swap configuration.
333	 */
334	if (rootdev == orootdev)
335		return;
336	printf("changing root device to %c%c%d%c\n",
337		devname[majdev][0], devname[majdev][1],
338		unit, part + 'a');
339#ifdef DOSWAP
340	mindev = DISKUNIT(rootdev);
341	for (swp = swdevt; swp->sw_dev; swp++) {
342		if (majdev == major(swp->sw_dev) &&
343		    mindev == DISKUNIT(swp->sw_dev)) {
344			temp = swdevt[0].sw_dev;
345			swdevt[0].sw_dev = swp->sw_dev;
346			swp->sw_dev = temp;
347			break;
348		}
349	}
350	if (swp->sw_dev == 0)
351		return;
352	/*
353	 * If dumpdev was the same as the old primary swap
354	 * device, move it to the new primary swap device.
355	 */
356	if (temp == dumpdev)
357		dumpdev = swdevt[0].sw_dev;
358#endif
359}
360
361
362/*
363 * Try to determine, of this machine is an A3000, which has a builtin
364 * realtime clock and scsi controller, so that this hardware is only
365 * included as "configured" if this IS an A3000
366 */
367
368int a3000_flag = 1;		/* patchable */
369#ifdef A4000
370int a4000_flag = 1;		/* patchable - default to A4000 */
371#else
372int a4000_flag = 0;		/* patchable */
373#endif
374
375int
376is_a3000()
377{
378	/* this is a dirty kludge.. but how do you do this RIGHT ? :-) */
379	extern long boot_fphystart;
380	short sc;
381
382	if ((machineid >> 16) == 3000)
383		return (1);			/* It's an A3000 */
384	if (machineid >> 16)
385		return (0);			/* It's not an A3000 */
386	/* Machine type is unknown, so try to guess it */
387	/* where is fastram on the A4000 ?? */
388	/* if fastram is below 0x07000000, assume it's not an A3000 */
389	if (boot_fphystart < 0x07000000)
390		return(0);
391	/*
392	 * OK, fastram starts at or above 0x07000000, check specific
393	 * machines
394	 */
395	for (sc = 0; sc < ncfdev; sc++) {
396		switch (cfdev[sc].rom.manid) {
397		case 2026:		/* Progressive Peripherals, Inc */
398			switch (cfdev[sc].rom.prodid) {
399			case 0:		/* PPI Mercury - A3000 */
400			case 1:		/* PP&S A3000 '040 */
401				return(1);
402			case 150:	/* PPI Zeus - it's an A2000 */
403			case 105:	/* PP&S A2000 '040 */
404			case 187:	/* PP&S A500 '040 */
405				return(0);
406			}
407			break;
408
409		case 2112:			/* IVS */
410			switch (cfdev[sc].rom.prodid) {
411			case 242:
412				return(0);	/* A2000 accelerator? */
413			}
414			break;
415		}
416	}
417	return (a3000_flag);		/* XXX let flag tell now */
418}
419
420int
421is_a4000()
422{
423	if ((machineid >> 16) == 4000)
424		return (1);		/* It's an A4000 */
425	if ((machineid >> 16) == 1200)
426		return (0);		/* It's an A1200, so not A4000 */
427#ifdef DRACO
428	if (is_draco())
429		return (0);
430#endif
431	/* Do I need this any more? */
432	if ((custom.deniseid & 0xff) == 0xf8)
433		return (1);
434#ifdef DEBUG
435	if (a4000_flag)
436		printf ("Denise ID = %04x\n", (unsigned short)custom.deniseid);
437#endif
438	if (machineid >> 16)
439		return (0);		/* It's not an A4000 */
440	return (a4000_flag);		/* Machine type not set */
441}
442
443int
444is_a1200()
445{
446	if ((machineid >> 16) == 1200)
447		return (1);		/* It's an A1200 */
448	return (0);			/* Machine type not set */
449}
450
451#ifdef DRACO
452int
453is_draco()
454{
455	if ((machineid >> 24) == 0x7D)
456		return ((machineid >> 16) & 0xFF);
457	return (0);
458}
459#endif
460