autoconf.c revision 1.44 
1/*	$NetBSD: autoconf.c,v 1.44 1996/12/17 11:43:12 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 *, const 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	int s;
58	/*
59	 * this is the real thing baby (i.e. not console init)
60	 */
61	amiga_realconfig = 1;
62#ifdef DRACO
63	if (is_draco()) {
64		*draco_intena &= ~DRIRQ_GLOBAL;
65	} else
66#endif
67	custom.intena = INTF_INTEN;
68	s = splhigh();
69
70	if (config_rootfound("mainbus", "mainbus") == NULL)
71		panic("no mainbus found");
72
73#ifdef DEBUG_KERNEL_START
74	printf("survived autoconf, going to enable interrupts\n");
75#endif
76
77#ifdef DRACO
78	if (is_draco()) {
79		*draco_intena |= DRIRQ_GLOBAL;
80		/* softints always enabled */
81	} else
82#endif
83	{
84		custom.intena = INTF_SETCLR | INTF_INTEN;
85
86		/* also enable hardware aided software interrupts */
87		custom.intena = INTF_SETCLR | INTF_SOFTINT;
88	}
89	splx(s);
90#ifdef DEBUG_KERNEL_START
91	printf("survived interrupt enable\n");
92#endif
93
94#ifdef GENERIC
95	if ((boothowto & RB_ASKNAME) == 0) {
96		setroot();
97#ifdef DEBUG_KERNEL_START
98		printf("survived setroot()\n");
99#endif
100	}
101	setconf();
102#ifdef DEBUG_KERNEL_START
103	printf("survived setconf()\n");
104#endif
105#else
106	setroot();
107#ifdef DEBUG_KERNEL_START
108	printf("survived setroot()\n");
109#endif
110#endif
111#ifdef DEBUG_KERNEL_START
112	printf("survived root device search\n");
113#endif
114	swapconf();
115#ifdef DEBUG_KERNEL_START
116	printf("survived swap device search\n");
117#endif
118	cold = 0;
119}
120
121/*ARGSUSED*/
122int
123simple_devprint(auxp, pnp)
124	void *auxp;
125	const char *pnp;
126{
127	return(QUIET);
128}
129
130int
131matchname(fp, sp)
132	char *fp, *sp;
133{
134	int len;
135
136	len = strlen(fp);
137	if (strlen(sp) != len)
138		return(0);
139	if (bcmp(fp, sp, len) == 0)
140		return(1);
141	return(0);
142}
143
144/*
145 * use config_search to find appropriate device, then call that device
146 * directly with NULL device variable storage.  A device can then
147 * always tell the difference betwean the real and console init
148 * by checking for NULL.
149 */
150int
151amiga_config_found(pcfp, pdp, auxp, pfn)
152	struct cfdata *pcfp;
153	struct device *pdp;
154	void *auxp;
155	cfprint_t pfn;
156{
157	struct device temp;
158	struct cfdata *cf;
159
160	if (amiga_realconfig)
161		return(config_found(pdp, auxp, pfn) != NULL);
162
163	if (pdp == NULL)
164		pdp = &temp;
165
166	pdp->dv_cfdata = pcfp;
167	if ((cf = config_search((cfmatch_t)NULL, pdp, auxp)) != NULL) {
168		cf->cf_attach->ca_attach(pdp, NULL, auxp);
169		pdp->dv_cfdata = NULL;
170		return(1);
171	}
172	pdp->dv_cfdata = NULL;
173	return(0);
174}
175
176/*
177 * this function needs to get enough configured to do a console
178 * basically this means start attaching the grfxx's that support
179 * the console. Kinda hacky but it works.
180 */
181void
182config_console()
183{
184	struct cfdata *cf;
185
186	/*
187	 * we need mainbus' cfdata.
188	 */
189	cf = config_rootsearch(NULL, "mainbus", "mainbus");
190	if (cf == NULL) {
191		panic("no mainbus");
192	}
193	/*
194	 * delay clock calibration.
195	 */
196	amiga_config_found(cf, NULL, "clock", NULL);
197
198	/*
199	 * internal grf.
200	 */
201#ifdef DRACO
202	if (!(is_draco()))
203#endif
204		amiga_config_found(cf, NULL, "grfcc", NULL);
205	/*
206	 * zbus knows when its not for real and will
207	 * only configure the appropriate hardware
208	 */
209	amiga_config_found(cf, NULL, "zbus", NULL);
210}
211
212/*
213 * mainbus driver
214 */
215struct cfattach mainbus_ca = {
216	sizeof(struct device), mbmatch, mbattach
217};
218
219struct cfdriver mainbus_cd = {
220	NULL, "mainbus", DV_DULL, NULL, 0
221};
222
223int
224mbmatch(pdp, match, auxp)
225	struct device *pdp;
226	void *match, *auxp;
227{
228	struct cfdata *cfp = match;
229
230	if (cfp->cf_unit > 0)
231		return(0);
232	/*
233	 * We are always here
234	 */
235	return(1);
236}
237
238/*
239 * "find" all the things that should be there.
240 */
241void
242mbattach(pdp, dp, auxp)
243	struct device *pdp, *dp;
244	void *auxp;
245{
246	printf("\n");
247	config_found(dp, "clock", simple_devprint);
248#ifdef DRACO
249	if (is_draco()) {
250		config_found(dp, "kbd", simple_devprint);
251		config_found(dp, "drsc", simple_devprint);
252		config_found(dp, "drcom", simple_devprint);
253		config_found(dp, "drcom", simple_devprint);
254		/*
255		 * XXX -- missing here:
256		 * SuperIO chip serial, parallel, floppy
257		 * or maybe just make that into a pseudo
258		 * ISA bus.
259		 */
260	} else
261#endif
262	{
263		config_found(dp, "ser", simple_devprint);
264		config_found(dp, "par", simple_devprint);
265		config_found(dp, "kbd", simple_devprint);
266		config_found(dp, "ms", simple_devprint);
267		config_found(dp, "ms", simple_devprint);
268		config_found(dp, "grfcc", simple_devprint);
269		config_found(dp, "fdc", simple_devprint);
270	}
271	if (is_a4000() || is_a1200())
272		config_found(dp, "idesc", simple_devprint);
273	if (is_a4000())			/* Try to configure A4000T SCSI */
274		config_found(dp, "afsc", simple_devprint);
275	config_found(dp, "zbus", simple_devprint);
276	if (is_a3000())
277		config_found(dp, "ahsc", simple_devprint);
278}
279
280int
281mbprint(auxp, pnp)
282	void *auxp;
283	const char *pnp;
284{
285	if (pnp)
286		printf("%s at %s", (char *)auxp, pnp);
287	return(UNCONF);
288}
289
290void
291swapconf()
292{
293	struct swdevt *swp;
294	u_int maj;
295	int nb;
296
297	for (swp = swdevt; swp->sw_dev > 0; swp++) {
298		maj = major(swp->sw_dev);
299
300		if (maj > nblkdev)
301			break;
302
303		if (bdevsw[maj].d_psize) {
304			nb = bdevsw[maj].d_psize(swp->sw_dev);
305			if (nb > 0 &&
306			    (swp->sw_nblks == 0 || swp->sw_nblks > nb))
307				swp->sw_nblks = nb;
308			else
309				swp->sw_nblks = 0;
310		}
311		swp->sw_nblks = ctod(dtoc(swp->sw_nblks));
312	}
313	dumpconf();
314	if (dumplo < 0)
315		dumplo = 0;
316
317}
318
319#define	DOSWAP			/* change swdevt and dumpdev */
320u_long	bootdev = 0;		/* should be dev_t, but not until 32 bits */
321
322static	char devname[][2] = {
323	{ 0	,0	},
324	{ 0	,0	},
325	{ 'f'	,'d'	},	/* 2 = fd */
326	{ 0	,0	},
327	{ 's'	,'d'	}	/* 4 = sd -- new SCSI system */
328};
329
330void
331setroot()
332{
333	int majdev, mindev, unit, part, adaptor;
334	dev_t temp = 0;
335	dev_t orootdev;
336	struct swdevt *swp;
337
338	if (boothowto & RB_DFLTROOT ||
339	    (bootdev & B_MAGICMASK) != (u_long)B_DEVMAGIC)
340		return;
341	majdev = (bootdev >> B_TYPESHIFT) & B_TYPEMASK;
342	if (majdev > sizeof(devname) / sizeof(devname[0]))
343		return;
344	adaptor = (bootdev >> B_ADAPTORSHIFT) & B_ADAPTORMASK;
345	part = (bootdev >> B_PARTITIONSHIFT) & B_PARTITIONMASK;
346	unit = (bootdev >> B_UNITSHIFT) & B_UNITMASK;
347	orootdev = rootdev;
348	rootdev = MAKEDISKDEV(majdev, unit, part);
349	/*
350	 * If the original rootdev is the same as the one
351	 * just calculated, don't need to adjust the swap configuration.
352	 */
353	if (rootdev == orootdev)
354		return;
355	printf("changing root device to %c%c%d%c\n",
356	    devname[majdev][0], devname[majdev][1],
357	    unit, part + 'a');
358#ifdef DOSWAP
359	mindev = DISKUNIT(rootdev);
360	for (swp = swdevt; swp->sw_dev; swp++) {
361		if (majdev == major(swp->sw_dev) &&
362		    mindev == DISKUNIT(swp->sw_dev)) {
363			temp = swdevt[0].sw_dev;
364			swdevt[0].sw_dev = swp->sw_dev;
365			swp->sw_dev = temp;
366			break;
367		}
368	}
369	if (swp->sw_dev == 0)
370		return;
371	/*
372	 * If dumpdev was the same as the old primary swap
373	 * device, move it to the new primary swap device.
374	 */
375	if (temp == dumpdev)
376		dumpdev = swdevt[0].sw_dev;
377#endif
378}
379
380
381/*
382 * Try to determine, of this machine is an A3000, which has a builtin
383 * realtime clock and scsi controller, so that this hardware is only
384 * included as "configured" if this IS an A3000
385 */
386
387int a3000_flag = 1;		/* patchable */
388#ifdef A4000
389int a4000_flag = 1;		/* patchable - default to A4000 */
390#else
391int a4000_flag = 0;		/* patchable */
392#endif
393
394int
395is_a3000()
396{
397	/* this is a dirty kludge.. but how do you do this RIGHT ? :-) */
398	extern long boot_fphystart;
399	short sc;
400
401	if ((machineid >> 16) == 3000)
402		return (1);			/* It's an A3000 */
403	if (machineid >> 16)
404		return (0);			/* It's not an A3000 */
405	/* Machine type is unknown, so try to guess it */
406	/* where is fastram on the A4000 ?? */
407	/* if fastram is below 0x07000000, assume it's not an A3000 */
408	if (boot_fphystart < 0x07000000)
409		return(0);
410	/*
411	 * OK, fastram starts at or above 0x07000000, check specific
412	 * machines
413	 */
414	for (sc = 0; sc < ncfdev; sc++) {
415		switch (cfdev[sc].rom.manid) {
416		case 2026:		/* Progressive Peripherals, Inc */
417			switch (cfdev[sc].rom.prodid) {
418			case 0:		/* PPI Mercury - A3000 */
419			case 1:		/* PP&S A3000 '040 */
420				return(1);
421			case 150:	/* PPI Zeus - it's an A2000 */
422			case 105:	/* PP&S A2000 '040 */
423			case 187:	/* PP&S A500 '040 */
424				return(0);
425			}
426			break;
427
428		case 2112:			/* IVS */
429			switch (cfdev[sc].rom.prodid) {
430			case 242:
431				return(0);	/* A2000 accelerator? */
432			}
433			break;
434		}
435	}
436	return (a3000_flag);		/* XXX let flag tell now */
437}
438
439int
440is_a4000()
441{
442	if ((machineid >> 16) == 4000)
443		return (1);		/* It's an A4000 */
444	if ((machineid >> 16) == 1200)
445		return (0);		/* It's an A1200, so not A4000 */
446#ifdef DRACO
447	if (is_draco())
448		return (0);
449#endif
450	/* Do I need this any more? */
451	if ((custom.deniseid & 0xff) == 0xf8)
452		return (1);
453#ifdef DEBUG
454	if (a4000_flag)
455		printf("Denise ID = %04x\n", (unsigned short)custom.deniseid);
456#endif
457	if (machineid >> 16)
458		return (0);		/* It's not an A4000 */
459	return (a4000_flag);		/* Machine type not set */
460}
461
462int
463is_a1200()
464{
465	if ((machineid >> 16) == 1200)
466		return (1);		/* It's an A1200 */
467	return (0);			/* Machine type not set */
468}
469
470#ifdef DRACO
471int
472is_draco()
473{
474	if ((machineid >> 24) == 0x7D)
475		return ((machineid >> 16) & 0xFF);
476	return (0);
477}
478#endif
479