autoconf.c revision 1.32 
1/*	$NetBSD: autoconf.c,v 1.32 1996/04/21 21:06:49 veego 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	custom.intena = INTF_INTEN;
62
63	if (config_rootfound("mainbus", "mainbus") == NULL)
64		panic("no mainbus found");
65
66	custom.intena = INTF_SETCLR | INTF_INTEN;
67
68	/* also enable hardware aided software interrupts */
69	custom.intena = INTF_SETCLR | INTF_SOFTINT;
70
71#ifdef GENERIC
72	if ((boothowto & RB_ASKNAME) == 0)
73		setroot();
74	setconf();
75#else
76	setroot();
77#endif
78	swapconf();
79	cold = 0;
80}
81
82/*ARGSUSED*/
83int
84simple_devprint(auxp, pnp)
85	void *auxp;
86	char *pnp;
87{
88	return(QUIET);
89}
90
91int
92matchname(fp, sp)
93	char *fp, *sp;
94{
95	int len;
96
97	len = strlen(fp);
98	if (strlen(sp) != len)
99		return(0);
100	if (bcmp(fp, sp, len) == 0)
101		return(1);
102	return(0);
103}
104
105/*
106 * use config_search to find appropriate device, then call that device
107 * directly with NULL device variable storage.  A device can then
108 * always tell the difference betwean the real and console init
109 * by checking for NULL.
110 */
111int
112amiga_config_found(pcfp, pdp, auxp, pfn)
113	struct cfdata *pcfp;
114	struct device *pdp;
115	void *auxp;
116	cfprint_t pfn;
117{
118	struct device temp;
119	struct cfdata *cf;
120
121	if (amiga_realconfig)
122		return(config_found(pdp, auxp, pfn) != NULL);
123
124	if (pdp == NULL)
125		pdp = &temp;
126
127	pdp->dv_cfdata = pcfp;
128	if ((cf = config_search((cfmatch_t)NULL, pdp, auxp)) != NULL) {
129		cf->cf_attach->ca_attach(pdp, NULL, auxp);
130		pdp->dv_cfdata = NULL;
131		return(1);
132	}
133	pdp->dv_cfdata = NULL;
134	return(0);
135}
136
137/*
138 * this function needs to get enough configured to do a console
139 * basically this means start attaching the grfxx's that support
140 * the console. Kinda hacky but it works.
141 */
142void
143config_console()
144{
145	struct cfdata *cf;
146
147	/*
148	 * we need mainbus' cfdata.
149	 */
150	cf = config_rootsearch(NULL, "mainbus", "mainbus");
151	if (cf == NULL)
152		panic("no mainbus");
153	/*
154	 * internal grf.
155	 */
156	amiga_config_found(cf, NULL, "grfcc", NULL);
157	/*
158	 * zbus knows when its not for real and will
159	 * only configure the appropriate hardware
160	 */
161	amiga_config_found(cf, NULL, "zbus", NULL);
162}
163
164/*
165 * mainbus driver
166 */
167struct cfattach mainbus_ca = {
168	sizeof(struct device), mbmatch, mbattach
169};
170
171struct cfdriver mainbus_cd = {
172	NULL, "mainbus", DV_DULL, NULL, 0
173};
174
175int
176mbmatch(pdp, match, auxp)
177	struct device *pdp;
178	void *match, *auxp;
179{
180	struct cfdata *cfp = match;
181
182	if (cfp->cf_unit > 0)
183		return(0);
184	/*
185	 * We are always here
186	 */
187	return(1);
188}
189
190/*
191 * "find" all the things that should be there.
192 */
193void
194mbattach(pdp, dp, auxp)
195	struct device *pdp, *dp;
196	void *auxp;
197{
198	printf ("\n");
199	config_found(dp, "clock", simple_devprint);
200	config_found(dp, "ser", simple_devprint);
201	config_found(dp, "par", simple_devprint);
202	config_found(dp, "kbd", simple_devprint);
203	config_found(dp, "grfcc", simple_devprint);
204	config_found(dp, "fdc", simple_devprint);
205	if (is_a4000() || is_a1200())
206		config_found(dp, "idesc", simple_devprint);
207	if (is_a4000())			/* Try to configure A4000T SCSI */
208		config_found(dp, "afsc", simple_devprint);
209	config_found(dp, "zbus", simple_devprint);
210	if (is_a3000())
211		config_found(dp, "ahsc", simple_devprint);
212}
213
214int
215mbprint(auxp, pnp)
216	void *auxp;
217	char *pnp;
218{
219	if (pnp)
220		printf("%s at %s", (char *)auxp, pnp);
221	return(UNCONF);
222}
223
224void
225swapconf()
226{
227	struct swdevt *swp;
228	u_int maj;
229	int nb;
230
231	for (swp = swdevt; swp->sw_dev > 0; swp++) {
232		maj = major(swp->sw_dev);
233
234		if (maj > nblkdev)
235			break;
236
237		if (bdevsw[maj].d_psize) {
238			nb = bdevsw[maj].d_psize(swp->sw_dev);
239			if (nb > 0 &&
240			    (swp->sw_nblks == 0 || swp->sw_nblks > nb))
241				swp->sw_nblks = nb;
242			else
243				swp->sw_nblks = 0;
244		}
245		swp->sw_nblks = ctod(dtoc(swp->sw_nblks));
246	}
247	if (dumplo == 0 && bdevsw[major(dumpdev)].d_psize)
248	/*dumplo = (*bdevsw[major(dumpdev)].d_psize)(dumpdev) - physmem;*/
249		dumplo = (*bdevsw[major(dumpdev)].d_psize)(dumpdev) -
250			ctob(physmem)/DEV_BSIZE;
251	if (dumplo < 0)
252		dumplo = 0;
253
254}
255
256#define	DOSWAP			/* change swdevt and dumpdev */
257u_long	bootdev = 0;		/* should be dev_t, but not until 32 bits */
258
259static	char devname[][2] = {
260	{ 0	,0	},
261	{ 0	,0	},
262	{ 'f'	,'d'	},	/* 2 = fd */
263	{ 0	,0	},
264	{ 's'	,'d'	}	/* 4 = sd -- new SCSI system */
265};
266
267void
268setroot()
269{
270	int majdev, mindev, unit, part, adaptor;
271	dev_t temp = 0;
272	dev_t 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