1/*	$NetBSD: obs266_machdep.c,v 1.19 2011/06/20 17:44:33 matt Exp $	*/
2/*	Original: md_machdep.c,v 1.3 2005/01/24 18:47:37 shige Exp $	*/
3
4/*
5 * Copyright 2001, 2002 Wasabi Systems, Inc.
6 * All rights reserved.
7 *
8 * Written by Eduardo Horvath and Simon Burge for Wasabi Systems, Inc.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 *    must display the following acknowledgement:
20 *      This product includes software developed for the NetBSD Project by
21 *      Wasabi Systems, Inc.
22 * 4. The name of Wasabi Systems, Inc. may not be used to endorse
23 *    or promote products derived from this software without specific prior
24 *    written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 * POSSIBILITY OF SUCH DAMAGE.
37 */
38
39/*
40 * Copyright (C) 1995, 1996 Wolfgang Solfrank.
41 * Copyright (C) 1995, 1996 TooLs GmbH.
42 * All rights reserved.
43 *
44 * Redistribution and use in source and binary forms, with or without
45 * modification, are permitted provided that the following conditions
46 * are met:
47 * 1. Redistributions of source code must retain the above copyright
48 *    notice, this list of conditions and the following disclaimer.
49 * 2. Redistributions in binary form must reproduce the above copyright
50 *    notice, this list of conditions and the following disclaimer in the
51 *    documentation and/or other materials provided with the distribution.
52 * 3. All advertising materials mentioning features or use of this software
53 *    must display the following acknowledgement:
54 *	This product includes software developed by TooLs GmbH.
55 * 4. The name of TooLs GmbH may not be used to endorse or promote products
56 *    derived from this software without specific prior written permission.
57 *
58 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
59 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
60 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
61 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
62 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
63 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
64 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
65 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
66 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
67 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
68 */
69
70#include <sys/cdefs.h>
71__KERNEL_RCSID(0, "$NetBSD: obs266_machdep.c,v 1.19 2011/06/20 17:44:33 matt Exp $");
72
73#include "opt_compat_netbsd.h"
74#include "opt_ddb.h"
75#include "opt_ipkdb.h"
76
77#include <sys/param.h>
78#include <sys/kernel.h>
79#include <sys/ksyms.h>
80#include <sys/mount.h>
81#include <sys/reboot.h>
82#include <sys/systm.h>
83#include <sys/device.h>
84#include <sys/module.h>
85#include <sys/bus.h>
86#include <sys/cpu.h>
87
88#include <uvm/uvm_extern.h>
89
90#include <machine/obs266.h>
91
92#include <powerpc/ibm4xx/dcr4xx.h>
93#include <powerpc/ibm4xx/cpu.h>
94#include <powerpc/ibm4xx/ibm405gp.h>
95#include <powerpc/ibm4xx/pci_machdep.h>
96#include <powerpc/ibm4xx/openbios.h>
97#include <powerpc/ibm4xx/dev/comopbvar.h>
98
99#include <powerpc/spr.h>
100#include <powerpc/ibm4xx/spr.h>
101
102#include <dev/ic/comreg.h>
103#include <dev/pci/pcivar.h>
104#include <dev/pci/pciconf.h>
105
106#include "ksyms.h"
107
108#include "com.h"
109#if (NCOM > 0)
110#include <sys/termios.h>
111
112#ifndef CONADDR
113#define CONADDR		IBM405GP_UART0_BASE
114#endif
115#ifndef CONSPEED
116#define CONSPEED	B9600
117#endif
118#ifndef CONMODE
119			/* 8N1 */
120#define CONMODE		((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8)
121#endif
122#endif	/* NCOM */
123
124#define	TLB_PG_SIZE 	(16*1024*1024)
125
126/*
127 * Global variables used here and there
128 */
129char bootpath[256];
130
131extern paddr_t msgbuf_paddr;
132
133void initppc(vaddr_t, vaddr_t, char *, void *);
134
135void
136initppc(vaddr_t startkernel, vaddr_t endkernel, char *args, void *info_block)
137{
138	vaddr_t va;
139	u_int memsize;
140
141	/* Setup board from OpenBIOS */
142	openbios_board_init(info_block, startkernel);
143	memsize = openbios_board_memsize_get();
144
145	/* Linear map kernel memory */
146	for (va = 0; va < endkernel; va += TLB_PG_SIZE)
147		ppc4xx_tlb_reserve(va, va, TLB_PG_SIZE, TLB_EX);
148
149	/* Map console after RAM (see pmap_tlbmiss()) */
150	ppc4xx_tlb_reserve(CONADDR, roundup(memsize, TLB_PG_SIZE), TLB_PG_SIZE,
151	    TLB_I | TLB_G);
152
153	/* Initialize IBM405GPr CPU */
154	ibm40x_memsize_init(memsize, startkernel);
155	ibm4xx_init(startkernel, endkernel, pic_ext_intr);
156
157#ifdef DEBUG
158	openbios_board_print();
159#endif
160
161#ifdef DDB
162	if (boothowto & RB_KDB)
163		Debugger();
164#endif
165#ifdef IPKDB
166	/*
167	 * Now trap to IPKDB
168	 */
169	ipkdb_init();
170	if (boothowto & RB_KDB)
171		ipkdb_connect(0);
172#endif
173
174	/*
175	 * Look for the ibm4xx modules in the right place.
176	 */
177	module_machine = module_machine_ibm4xx;
178}
179
180void
181consinit(void)
182{
183
184#if (NCOM > 0)
185	com_opb_cnattach(OBS266_COM_FREQ, CONADDR, CONSPEED, CONMODE);
186#endif
187}
188
189/*
190 * Machine dependent startup code.
191 */
192void
193cpu_startup(void)
194{
195
196	/*
197	 * cpu common startup
198	 */
199	ibm4xx_cpu_startup("OpenBlockS266 IBM PowerPC 405GPr Board");
200
201	/*
202	 * Set up the board properties database.
203	 */
204	openbios_board_info_set();
205
206	/*
207	 * Now that we have VM, malloc()s are OK in bus_space.
208	 */
209	bus_space_mallocok();
210
211	/*
212	 * no fake mapiodev
213	 */
214	fake_mapiodev = 0;
215}
216
217/*
218 * Halt or reboot the machine after syncing/dumping according to howto.
219 */
220void
221cpu_reboot(int howto, char *what)
222{
223	static int syncing;
224	static char str[256];
225	char *ap = str, *ap1 = ap;
226
227	boothowto = howto;
228	if (!cold && !(howto & RB_NOSYNC) && !syncing) {
229		syncing = 1;
230		vfs_shutdown();		/* sync */
231		resettodr();		/* set wall clock */
232	}
233
234	splhigh();
235
236	if (!cold && (howto & RB_DUMP))
237		ibm4xx_dumpsys();
238
239	doshutdownhooks();
240
241	pmf_system_shutdown(boothowto);
242
243	if ((howto & RB_POWERDOWN) == RB_POWERDOWN) {
244	  /* Power off here if we know how...*/
245	}
246
247	if (howto & RB_HALT) {
248		printf("halted\n\n");
249
250#if 0
251		goto reboot;	/* XXX for now... */
252#endif
253
254#ifdef DDB
255		printf("dropping to debugger\n");
256		while(1)
257			Debugger();
258#endif
259	}
260
261	printf("rebooting\n\n");
262	if (what && *what) {
263		if (strlen(what) > sizeof str - 5)
264			printf("boot string too large, ignored\n");
265		else {
266			strcpy(str, what);
267			ap1 = ap = str + strlen(str);
268			*ap++ = ' ';
269		}
270	}
271	*ap++ = '-';
272	if (howto & RB_SINGLE)
273		*ap++ = 's';
274	if (howto & RB_KDB)
275		*ap++ = 'd';
276	*ap++ = 0;
277	if (ap[-2] == '-')
278		*ap1 = 0;
279
280	/* flush cache for msgbuf */
281	__syncicache((void *)msgbuf_paddr, round_page(MSGBUFSIZE));
282
283#if 0
284 reboot:
285#endif
286	ppc4xx_reset();
287
288	printf("ppc4xx_reset() failed!\n");
289#ifdef DDB
290	while(1)
291		Debugger();
292#else
293	while (1)
294		/* nothing */;
295#endif
296}
297
298int
299ibm4xx_pci_bus_maxdevs(void *v, int busno)
300{
301
302	/*
303	 * Bus number is irrelevant.  Configuration Mechanism 1 is in
304	 * use, can have devices 0-32 (i.e. the `normal' range).
305	 */
306	return 31;
307}
308
309int
310ibm4xx_pci_intr_map(const struct pci_attach_args *pa, pci_intr_handle_t *ihp)
311{
312	/*
313	 * We need to map the interrupt pin to the interrupt bit
314	 * in the UIC associated with it.
315	 *
316	 * This platform has 4 PCI devices.
317	 *
318	 # External IRQ Mappings:
319	 *  dev 1 (Ext IRQ3):	PCI Connector
320	 *  dev 2 (Ext IRQ4):	PCI Connector
321	 *  dev 3 (Ext IRQ5):	HPT IDE Controller
322	 *  dev 4 (Ext IRQ6):	Davicom Ethernet
323	 */
324	static const int irqmap[4/*device*/][4/*pin*/] = {
325		{  3,  3,  3,  3 },	/* 1: PCI Connector 1 */
326		{  4,  4,  4,  4 },	/* 2: PCI Connector 2 */
327		{  5,  5, -1, -1 },	/* 3: HPT IDE Controller */
328		{  6,  6, -1, -1 },	/* 4: Damicom Ethernet */
329	};
330
331	int pin, dev, irq;
332
333	pin = pa->pa_intrpin;
334	dev = pa->pa_device;
335        *ihp = -1;
336
337	/* if interrupt pin not used... */
338	if (pin == 0)
339		return 1;
340
341	if (pin > 4) {
342		printf("pci_intr_map: bad interrupt pin %d\n", pin);
343		return 1;
344	}
345
346	if ((dev < 1) || (dev > 4)) {
347		printf("pci_intr_map: bad device %d\n", dev);
348		return 1;
349	}
350
351
352	if ((irq = irqmap[dev - 1][pin - 1]) == -1) {
353		printf("pci_intr_map: no IRQ routing for device %d pin %d\n",
354			dev, pin);
355		return 1;
356	}
357
358	*ihp = irq + 25;
359	return 0;
360}
361
362void
363ibm4xx_pci_conf_interrupt(void *v, int bus, int dev, int pin, int swiz,
364    int *iline)
365{
366
367	static const int ilinemap[4/*device*/] = {
368		28, 29, 30, 31
369	};
370
371	if ((dev < 1) || (dev > 4)) {
372		printf("%s: bad device %d\n", __func__, dev);
373		*iline = 0;
374		return;
375	}
376	*iline = ilinemap[dev - 1];
377}
378