1 /* $NetBSD: obs266_machdep.c,v 1.27 2021/08/03 09:25:44 rin 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 1.27 2021/08/03 09:25:44 rin Exp $");
72
73 #include "opt_ddb.h"
74
75 #include <sys/param.h>
76 #include <sys/bus.h>
77 #include <sys/device.h>
78 #include <sys/kernel.h>
79 #include <sys/module.h>
80 #include <sys/reboot.h>
81 #include <sys/systm.h>
82
83 #include <machine/obs266.h>
84
85 #include <powerpc/spr.h>
86 #include <powerpc/ibm4xx/spr.h>
87
88 #include <powerpc/ibm4xx/cpu.h>
89 #include <powerpc/ibm4xx/dcr4xx.h>
90 #include <powerpc/ibm4xx/ibm405gp.h>
91 #include <powerpc/ibm4xx/openbios.h>
92 #include <powerpc/ibm4xx/tlb.h>
93
94 #include <powerpc/ibm4xx/pci_machdep.h>
95 #include <dev/pci/pciconf.h>
96 #include <dev/pci/pcivar.h>
97
98 #include "com.h"
99 #if (NCOM > 0)
100 #include <sys/termios.h>
101 #include <powerpc/ibm4xx/dev/comopbvar.h>
102 #include <dev/ic/comreg.h>
103
104 #ifndef CONADDR
105 #define CONADDR IBM405GP_UART0_BASE
106 #endif
107 #ifndef CONSPEED
108 #define CONSPEED B9600
109 #endif
110 #ifndef CONMODE
111 /* 8N1 */
112 #define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8)
113 #endif
114 #endif /* NCOM */
115
116 #define TLB_PG_SIZE (16*1024*1024)
117
118 void initppc(vaddr_t, vaddr_t, char *, void *);
119
120 void
initppc(vaddr_t startkernel,vaddr_t endkernel,char * args,void * info_block)121 initppc(vaddr_t startkernel, vaddr_t endkernel, char *args, void *info_block)
122 {
123 vaddr_t va;
124 u_int memsize;
125
126 /* Setup board from OpenBIOS */
127 openbios_board_init(info_block);
128 memsize = openbios_board_memsize_get();
129
130 /* Linear map kernel memory */
131 for (va = 0; va < endkernel; va += TLB_PG_SIZE)
132 ppc4xx_tlb_reserve(va, va, TLB_PG_SIZE, TLB_EX);
133
134 /* Map console after RAM (see pmap_tlbmiss()) */
135 ppc4xx_tlb_reserve(CONADDR, roundup(memsize, TLB_PG_SIZE), TLB_PG_SIZE,
136 TLB_I | TLB_G);
137
138 /* Initialize IBM405GPr CPU */
139 ibm40x_memsize_init(memsize, startkernel);
140 ibm4xx_init(startkernel, endkernel, pic_ext_intr);
141
142 #ifdef DEBUG
143 openbios_board_print();
144 #endif
145
146 #ifdef DDB
147 if (boothowto & RB_KDB)
148 Debugger();
149 #endif
150 }
151
152 void
consinit(void)153 consinit(void)
154 {
155
156 #if (NCOM > 0)
157 com_opb_cnattach(OBS266_COM_FREQ, CONADDR, CONSPEED, CONMODE);
158 #endif
159 }
160
161 /*
162 * Machine dependent startup code.
163 */
164 void
cpu_startup(void)165 cpu_startup(void)
166 {
167
168 /*
169 * cpu common startup
170 */
171 ibm4xx_cpu_startup("OpenBlockS266 IBM PowerPC 405GPr Board");
172
173 /*
174 * Set up the board properties database.
175 */
176 openbios_board_info_set();
177
178 /*
179 * Now that we have VM, malloc()s are OK in bus_space.
180 */
181 bus_space_mallocok();
182
183 /*
184 * no fake mapiodev
185 */
186 fake_mapiodev = 0;
187 }
188
189 int
ibm4xx_pci_bus_maxdevs(void * v,int busno)190 ibm4xx_pci_bus_maxdevs(void *v, int busno)
191 {
192
193 /*
194 * Bus number is irrelevant. Configuration Mechanism 1 is in
195 * use, can have devices 0-32 (i.e. the `normal' range).
196 */
197 return 31;
198 }
199
200 int
ibm4xx_pci_intr_map(const struct pci_attach_args * pa,pci_intr_handle_t * ihp)201 ibm4xx_pci_intr_map(const struct pci_attach_args *pa, pci_intr_handle_t *ihp)
202 {
203 /*
204 * We need to map the interrupt pin to the interrupt bit
205 * in the UIC associated with it.
206 *
207 * This platform has 4 PCI devices.
208 *
209 # External IRQ Mappings:
210 * dev 1 (Ext IRQ3): PCI Connector
211 * dev 2 (Ext IRQ4): PCI Connector
212 * dev 3 (Ext IRQ5): HPT IDE Controller
213 * dev 4 (Ext IRQ6): Davicom Ethernet
214 */
215 static const int irqmap[4/*device*/][4/*pin*/] = {
216 { 3, 3, 3, 3 }, /* 1: PCI Connector 1 */
217 { 4, 4, 4, 4 }, /* 2: PCI Connector 2 */
218 { 5, 5, -1, -1 }, /* 3: HPT IDE Controller */
219 { 6, 6, -1, -1 }, /* 4: Damicom Ethernet */
220 };
221
222 int pin, dev, irq;
223
224 pin = pa->pa_intrpin;
225 dev = pa->pa_device;
226 *ihp = -1;
227
228 /* if interrupt pin not used... */
229 if (pin == 0)
230 return 1;
231
232 if (pin > 4) {
233 printf("pci_intr_map: bad interrupt pin %d\n", pin);
234 return 1;
235 }
236
237 if ((dev < 1) || (dev > 4)) {
238 printf("pci_intr_map: bad device %d\n", dev);
239 return 1;
240 }
241
242
243 if ((irq = irqmap[dev - 1][pin - 1]) == -1) {
244 printf("pci_intr_map: no IRQ routing for device %d pin %d\n",
245 dev, pin);
246 return 1;
247 }
248
249 *ihp = irq + 25;
250 return 0;
251 }
252
253 void
ibm4xx_pci_conf_interrupt(void * v,int bus,int dev,int pin,int swiz,int * iline)254 ibm4xx_pci_conf_interrupt(void *v, int bus, int dev, int pin, int swiz,
255 int *iline)
256 {
257
258 static const int ilinemap[4/*device*/] = {
259 28, 29, 30, 31
260 };
261
262 if ((dev < 1) || (dev > 4)) {
263 printf("%s: bad device %d\n", __func__, dev);
264 *iline = 0;
265 return;
266 }
267 *iline = ilinemap[dev - 1];
268 }
269