autoconf.c revision 1.30 
1/*	$NetBSD: autoconf.c,v 1.30 1996/03/17 01:16:48 thorpej 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 configure __P((void));
44void setroot __P((void));
45void swapconf __P((void));
46void mbattach __P((struct device *, struct device *, void *));
47int mbprint __P((void *, char *));
48int mbmatch __P((struct device *, void *, void *));
49
50int cold;	/* 1 if still booting */
51#include <sys/kernel.h>
52/*
53 * called at boot time, configure all devices on system
54 */
55void
56configure()
57{
58	/*
59	 * this is the real thing baby (i.e. not console init)
60	 */
61	amiga_realconfig = 1;
62	custom.intena = INTF_INTEN;
63
64	if (config_rootfound("mainbus", "mainbus") == 0)
65		panic("no mainbus found");
66
67	custom.intena = INTF_SETCLR | INTF_INTEN;
68
69	/* also enable hardware aided software interrupts */
70	custom.intena = INTF_SETCLR | INTF_SOFTINT;
71
72#ifdef GENERIC
73	if ((boothowto & RB_ASKNAME) == 0)
74		setroot();
75	setconf();
76#else
77	setroot();
78#endif
79	swapconf();
80	cold = 0;
81}
82
83/*ARGSUSED*/
84int
85simple_devprint(auxp, pnp)
86	void *auxp;
87	char *pnp;
88{
89	return(QUIET);
90}
91
92int
93matchname(fp, sp)
94	char *fp, *sp;
95{
96	int len;
97
98	len = strlen(fp);
99	if (strlen(sp) != len)
100		return(0);
101	if (bcmp(fp, sp, len) == 0)
102		return(1);
103	return(0);
104}
105
106/*
107 * use config_search to find appropriate device, then call that device
108 * directly with NULL device variable storage.  A device can then
109 * always tell the difference betwean the real and console init
110 * by checking for NULL.
111 */
112int
113amiga_config_found(pcfp, pdp, auxp, pfn)
114	struct cfdata *pcfp;
115	struct device *pdp;
116	void *auxp;
117	cfprint_t pfn;
118{
119	struct device temp;
120	struct cfdata *cf;
121
122	if (amiga_realconfig)
123		return(config_found(pdp, auxp, pfn));
124
125	if (pdp == NULL)
126		pdp = &temp;
127
128	pdp->dv_cfdata = pcfp;
129	if ((cf = config_search((cfmatch_t)NULL, pdp, auxp)) != NULL) {
130		cf->cf_attach->ca_attach(pdp, NULL, auxp);
131		pdp->dv_cfdata = NULL;
132		return(1);
133	}
134	pdp->dv_cfdata = NULL;
135	return(0);
136}
137
138/*
139 * this function needs to get enough configured to do a console
140 * basically this means start attaching the grfxx's that support
141 * the console. Kinda hacky but it works.
142 */
143int
144config_console()
145{
146	struct cfdata *cf;
147
148	/*
149	 * we need mainbus' cfdata.
150	 */
151	cf = config_rootsearch(NULL, "mainbus", "mainbus");
152	if (cf == NULL)
153		panic("no mainbus");
154	/*
155	 * internal grf.
156	 */
157	amiga_config_found(cf, NULL, "grfcc", NULL);
158	/*
159	 * zbus knows when its not for real and will
160	 * only configure the appropriate hardware
161	 */
162	amiga_config_found(cf, NULL, "zbus", NULL);
163}
164
165/*
166 * mainbus driver
167 */
168struct cfattach mainbus_ca = {
169	sizeof(struct device), mbmatch, mbattach
170};
171
172struct cfdriver mainbus_cd = {
173	NULL, "mainbus", DV_DULL, NULL, 0
174};
175
176int
177mbmatch(pdp, match, auxp)
178	struct device *pdp;
179	void *match, *auxp;
180{
181	struct cfdata *cfp = match;
182
183	if (cfp->cf_unit > 0)
184		return(0);
185	/*
186	 * We are always here
187	 */
188	return(1);
189}
190
191/*
192 * "find" all the things that should be there.
193 */
194void
195mbattach(pdp, dp, auxp)
196	struct device *pdp, *dp;
197	void *auxp;
198{
199	printf ("\n");
200	config_found(dp, "clock", simple_devprint);
201	config_found(dp, "ser", simple_devprint);
202	config_found(dp, "par", simple_devprint);
203	config_found(dp, "kbd", simple_devprint);
204	config_found(dp, "grfcc", simple_devprint);
205	config_found(dp, "fdc", simple_devprint);
206	if (is_a4000() || is_a1200())
207		config_found(dp, "idesc", simple_devprint);
208	if (is_a4000())			/* Try to configure A4000T SCSI */
209		config_found(dp, "afsc", simple_devprint);
210	config_found(dp, "zbus", simple_devprint);
211	if (is_a3000())
212		config_found(dp, "ahsc", simple_devprint);
213}
214
215int
216mbprint(auxp, pnp)
217	void *auxp;
218	char *pnp;
219{
220	if (pnp)
221		printf("%s at %s", (char *)auxp, pnp);
222	return(UNCONF);
223}
224
225void
226swapconf()
227{
228	struct swdevt *swp;
229	u_int maj;
230	int nb;
231
232	for (swp = swdevt; swp->sw_dev > 0; swp++) {
233		maj = major(swp->sw_dev);
234
235		if (maj > nblkdev)
236			break;
237
238		if (bdevsw[maj].d_psize) {
239			nb = bdevsw[maj].d_psize(swp->sw_dev);
240			if (nb > 0 &&
241			    (swp->sw_nblks == 0 || swp->sw_nblks > nb))
242				swp->sw_nblks = nb;
243			else
244				swp->sw_nblks = 0;
245		}
246		swp->sw_nblks = ctod(dtoc(swp->sw_nblks));
247	}
248	if (dumplo == 0 && bdevsw[major(dumpdev)].d_psize)
249	/*dumplo = (*bdevsw[major(dumpdev)].d_psize)(dumpdev) - physmem;*/
250		dumplo = (*bdevsw[major(dumpdev)].d_psize)(dumpdev) -
251			ctob(physmem)/DEV_BSIZE;
252	if (dumplo < 0)
253		dumplo = 0;
254
255}
256
257#define	DOSWAP			/* change swdevt and dumpdev */
258u_long	bootdev = 0;		/* should be dev_t, but not until 32 bits */
259
260static	char devname[][2] = {
261	0,0,
262	0,0,
263	'f','d',	/* 2 = fd */
264	0,0,
265	's','d',	/* 4 = sd -- new SCSI system */
266};
267
268void
269setroot()
270{
271	int majdev, mindev, unit, part, adaptor;
272	dev_t temp, orootdev;
273	struct swdevt *swp;
274
275	if (boothowto & RB_DFLTROOT ||
276	    (bootdev & B_MAGICMASK) != (u_long)B_DEVMAGIC)
277		return;
278	majdev = (bootdev >> B_TYPESHIFT) & B_TYPEMASK;
279	if (majdev > sizeof(devname) / sizeof(devname[0]))
280		return;
281	adaptor = (bootdev >> B_ADAPTORSHIFT) & B_ADAPTORMASK;
282	part = (bootdev >> B_PARTITIONSHIFT) & B_PARTITIONMASK;
283	unit = (bootdev >> B_UNITSHIFT) & B_UNITMASK;
284	orootdev = rootdev;
285	rootdev = MAKEDISKDEV(majdev, unit, part);
286	/*
287	 * If the original rootdev is the same as the one
288	 * just calculated, don't need to adjust the swap configuration.
289	 */
290	if (rootdev == orootdev)
291		return;
292	printf("changing root device to %c%c%d%c\n",
293		devname[majdev][0], devname[majdev][1],
294		unit, part + 'a');
295#ifdef DOSWAP
296	mindev = DISKUNIT(rootdev);
297	for (swp = swdevt; swp->sw_dev; swp++) {
298		if (majdev == major(swp->sw_dev) &&
299		    mindev == DISKUNIT(swp->sw_dev)) {
300			temp = swdevt[0].sw_dev;
301			swdevt[0].sw_dev = swp->sw_dev;
302			swp->sw_dev = temp;
303			break;
304		}
305	}
306	if (swp->sw_dev == 0)
307		return;
308	/*
309	 * If dumpdev was the same as the old primary swap
310	 * device, move it to the new primary swap device.
311	 */
312	if (temp == dumpdev)
313		dumpdev = swdevt[0].sw_dev;
314#endif
315}
316
317
318/*
319 * Try to determine, of this machine is an A3000, which has a builtin
320 * realtime clock and scsi controller, so that this hardware is only
321 * included as "configured" if this IS an A3000
322 */
323
324int a3000_flag = 1;		/* patchable */
325#ifdef A4000
326int a4000_flag = 1;		/* patchable - default to A4000 */
327#else
328int a4000_flag = 0;		/* patchable */
329#endif
330
331int
332is_a3000()
333{
334	/* this is a dirty kludge.. but how do you do this RIGHT ? :-) */
335	extern long boot_fphystart;
336	short sc;
337
338	if ((machineid >> 16) == 3000)
339		return (1);			/* It's an A3000 */
340	if (machineid >> 16)
341		return (0);			/* It's not an A3000 */
342	/* Machine type is unknown, so try to guess it */
343	/* where is fastram on the A4000 ?? */
344	/* if fastram is below 0x07000000, assume it's not an A3000 */
345	if (boot_fphystart < 0x07000000)
346		return(0);
347	/*
348	 * OK, fastram starts at or above 0x07000000, check specific
349	 * machines
350	 */
351	for (sc = 0; sc < ncfdev; sc++) {
352		switch (cfdev[sc].rom.manid) {
353		case 2026:		/* Progressive Peripherals, Inc */
354			switch (cfdev[sc].rom.prodid) {
355			case 0:		/* PPI Mercury - A3000 */
356			case 1:		/* PP&S A3000 '040 */
357				return(1);
358			case 150:	/* PPI Zeus - it's an A2000 */
359			case 105:	/* PP&S A2000 '040 */
360			case 187:	/* PP&S A500 '040 */
361				return(0);
362			}
363			break;
364
365		case 2112:			/* IVS */
366			switch (cfdev[sc].rom.prodid) {
367			case 242:
368				return(0);	/* A2000 accelerator? */
369			}
370			break;
371		}
372	}
373	return (a3000_flag);		/* XXX let flag tell now */
374}
375
376int
377is_a4000()
378{
379	if ((machineid >> 16) == 4000)
380		return (1);		/* It's an A4000 */
381	if ((machineid >> 16) == 1200)
382		return (0);		/* It's an A1200, so not A4000 */
383	/* Do I need this any more? */
384	if ((custom.deniseid & 0xff) == 0xf8)
385		return (1);
386#ifdef DEBUG
387	if (a4000_flag)
388		printf ("Denise ID = %04x\n", (unsigned short)custom.deniseid);
389#endif
390	if (machineid >> 16)
391		return (0);		/* It's not an A4000 */
392	return (a4000_flag);		/* Machine type not set */
393}
394
395int
396is_a1200()
397{
398	if ((machineid >> 16) == 1200)
399		return (1);		/* It's an A1200 */
400	return (0);			/* Machine type not set */
401}
402