autoconf.c revision 1.17 
1/*
2 * Copyright (c) 1994 Christian E. Hopps
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *      This product includes software developed by Christian E. Hopps.
16 * 4. The name of the author may not be used to endorse or promote products
17 *    derived from this software without specific prior written permission
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 *
30 *	$Id: autoconf.c,v 1.17 1994/05/08 05:52:13 chopps Exp $
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 <amiga/amiga/cfdev.h>
39#include <amiga/amiga/device.h>
40#include <amiga/amiga/custom.h>
41#include <amiga/dev/ztwobusvar.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 *, struct cfdata *, 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#ifdef GENERIC
69	if ((boothowto & RB_ASKNAME) == 0)
70		setroot();
71	setconf();
72#else
73	setroot();
74#endif
75	swapconf();
76	cold = 0;
77}
78
79/*ARGSUSED*/
80int
81simple_devprint(auxp, pnp)
82	void *auxp;
83	char *pnp;
84{
85	return(QUIET);
86}
87
88int
89matchname(fp, sp)
90	char *fp, *sp;
91{
92	int len;
93
94	len = strlen(fp);
95	if (strlen(sp) != len)
96		return(0);
97	if (bcmp(fp, sp, len) == 0)
98		return(1);
99	return(0);
100}
101
102/*
103 * use config_search to find appropriate device, then call that device
104 * directly with NULL device variable storage.  A device can then
105 * always tell the difference betwean the real and console init
106 * by checking for NULL.
107 */
108int
109amiga_config_found(pcfp, pdp, auxp, pfn)
110	struct cfdata *pcfp;
111	struct device *pdp;
112	void *auxp;
113	cfprint_t pfn;
114{
115	struct device temp;
116	struct cfdata *cf;
117
118	if (amiga_realconfig)
119		return(config_found(pdp, auxp, pfn));
120
121	if (pdp == NULL)
122		pdp = &temp;
123
124	pdp->dv_cfdata = pcfp;
125	if ((cf = config_search((cfmatch_t)NULL, pdp, auxp)) != NULL) {
126		cf->cf_driver->cd_attach(pdp, NULL, auxp);
127		pdp->dv_cfdata = NULL;
128		return(1);
129	}
130	pdp->dv_cfdata = NULL;
131	return(0);
132}
133
134/*
135 * this function needs to get enough configured to do a console
136 * basically this means start attaching the grfxx's that support
137 * the console. Kinda hacky but it works.
138 */
139int
140config_console()
141{
142	extern struct cfdriver mainbuscd, ztwobuscd;
143	struct cfdata *cf;
144
145	/*
146	 * we need mainbus' cfdata.
147	 */
148	cf = config_rootsearch(NULL, "mainbus", "mainbus");
149	if (cf == NULL)
150		panic("no mainbus");
151	/*
152	 * internal grf.
153	 */
154	amiga_config_found(cf, NULL, "grfcc", NULL);
155#if not_yet
156	/*
157	 * ztwobus knows when its not for real (amiga_realconfig == 0)
158	 */
159	amiga_config_found(cf, NULL, "ztwobus", NULL);
160#endif
161}
162
163/*
164 * mainbus driver
165 */
166struct cfdriver mainbuscd = {
167	NULL, "mainbus", mbmatch, mbattach,
168	DV_DULL, sizeof(struct device), NULL, 0
169};
170
171int
172mbmatch(pdp, cfp, auxp)
173	struct device *pdp;
174	struct cfdata *cfp;
175	void *auxp;
176{
177	if (cfp->cf_unit > 0)
178		return(0);
179	/*
180	 * We are always here
181	 */
182	return(1);
183}
184
185/*
186 * "find" all the things that should be there.
187 */
188void
189mbattach(pdp, dp, auxp)
190	struct device *pdp, *dp;
191	void *auxp;
192{
193	config_found(dp, "clock", simple_devprint);
194	config_found(dp, "ser", simple_devprint);
195	config_found(dp, "par", simple_devprint);
196	config_found(dp, "kbd", simple_devprint);
197	config_found(dp, "grfcc", simple_devprint);
198	config_found(dp, "ztwobus", simple_devprint);
199	if (is_a3000())
200		config_found(dp, "ahsc", simple_devprint);
201}
202
203int
204mbprint(auxp, pnp)
205	void *auxp;
206	char *pnp;
207{
208	if (pnp)
209		printf("%s at %s", (char *)auxp, pnp);
210	return(UNCONF);
211}
212
213void
214swapconf()
215{
216	struct swdevt *swp;
217	u_int maj;
218	int nb;
219
220	for (swp = swdevt; swp->sw_dev > 0; swp++) {
221		maj = major(swp->sw_dev);
222
223		if (maj > nblkdev)
224			break;
225
226		if (bdevsw[maj].d_psize) {
227			nb = bdevsw[maj].d_psize(swp->sw_dev);
228			if (nb > 0 &&
229			    (swp->sw_nblks == 0 || swp->sw_nblks > nb))
230				swp->sw_nblks = nb;
231			else
232				swp->sw_nblks = 0;
233		}
234		swp->sw_nblks = ctod(dtoc(swp->sw_nblks));
235	}
236	if (dumplo == 0 && bdevsw[major(dumpdev)].d_psize)
237	/*dumplo = (*bdevsw[major(dumpdev)].d_psize)(dumpdev) - physmem;*/
238		dumplo = (*bdevsw[major(dumpdev)].d_psize)(dumpdev) -
239			ctob(physmem)/DEV_BSIZE;
240	if (dumplo < 0)
241		dumplo = 0;
242
243}
244
245#define	DOSWAP			/* change swdevt and dumpdev */
246u_long	bootdev = 0;		/* should be dev_t, but not until 32 bits */
247
248static	char devname[][2] = {
249	0,0,
250	0,0,
251	'f','d',	/* 2 = fd */
252	0,0,
253	's','d',	/* 4 = sd -- new SCSI system */
254};
255
256void
257setroot()
258{
259	int majdev, mindev, unit, part, adaptor;
260	dev_t temp, orootdev;
261	struct swdevt *swp;
262
263	if (boothowto & RB_DFLTROOT ||
264	    (bootdev & B_MAGICMASK) != (u_long)B_DEVMAGIC)
265		return;
266	majdev = (bootdev >> B_TYPESHIFT) & B_TYPEMASK;
267	if (majdev > sizeof(devname) / sizeof(devname[0]))
268		return;
269	adaptor = (bootdev >> B_ADAPTORSHIFT) & B_ADAPTORMASK;
270	part = (bootdev >> B_PARTITIONSHIFT) & B_PARTITIONMASK;
271	unit = (bootdev >> B_UNITSHIFT) & B_UNITMASK;
272	orootdev = rootdev;
273	rootdev = MAKEDISKDEV(majdev, unit, part);
274	/*
275	 * If the original rootdev is the same as the one
276	 * just calculated, don't need to adjust the swap configuration.
277	 */
278	if (rootdev == orootdev)
279		return;
280	printf("changing root device to %c%c%d%c\n",
281		devname[majdev][0], devname[majdev][1],
282		unit, part + 'a');
283#ifdef DOSWAP
284	mindev = DISKUNIT(rootdev);
285	for (swp = swdevt; swp->sw_dev; swp++) {
286		if (majdev == major(swp->sw_dev) &&
287		    mindev == DISKUNIT(swp->sw_dev)) {
288			temp = swdevt[0].sw_dev;
289			swdevt[0].sw_dev = swp->sw_dev;
290			swp->sw_dev = temp;
291			break;
292		}
293	}
294	if (swp->sw_dev == 0)
295		return;
296	/*
297	 * If dumpdev was the same as the old primary swap
298	 * device, move it to the new primary swap device.
299	 */
300	if (temp == dumpdev)
301		dumpdev = swdevt[0].sw_dev;
302#endif
303}
304
305
306/*
307 * Try to determine, of this machine is an A3000, which has a builtin
308 * realtime clock and scsi controller, so that this hardware is only
309 * included as "configured" if this IS an A3000
310 */
311
312int a3000_flag = 1;		/* patchable */
313#ifdef A4000
314int a4000_flag = 1;		/* patchable - default to A4000 */
315#else
316int a4000_flag = 0;		/* patchable */
317#endif
318
319int
320is_a3000()
321{
322	/* this is a dirty kludge.. but how do you do this RIGHT ? :-) */
323	extern long orig_fastram_start;
324	short sc;
325
326	/* where is fastram on the A4000 ?? */
327	/* if fastram is below 0x07000000, assume it's not an A3000 */
328	if (orig_fastram_start < 0x07000000)
329		return(0);
330	/*
331	 * OK, fastram starts at or above 0x07000000, check specific
332	 * machines
333	 */
334	for (sc = 0; sc < ncfdev; sc++) {
335		switch (cfdev[sc].rom.manid) {
336		case 2026:		/* Progressive Peripherals, Inc */
337			switch (cfdev[sc].rom.prodid) {
338			case 0:		/* PPI Mercury - A3000 */
339			case 1:		/* PP&S A3000 '040 */
340				return(1);
341			case 150:	/* PPI Zeus - it's an A2000 */
342			case 105:	/* PP&S A2000 '040 */
343			case 187:	/* PP&S A500 '040 */
344				return(0);
345			}
346			break;
347
348		case 2112:			/* IVS */
349			switch (cfdev[sc].rom.prodid) {
350			case 242:
351				return(0);	/* A2000 accelerator? */
352			}
353			break;
354		}
355	}
356	return (a3000_flag);		/* XXX let flag tell now */
357}
358
359int
360is_a4000()
361{
362	return (a4000_flag);		/* XXX */
363}
364