1 /* $NetBSD: obs200_machdep.c,v 1.25 2021/09/04 13:36:07 rin Exp $ */
2 /* Original: machdep.c,v 1.3 2005/01/17 17:24:09 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: obs200_machdep.c,v 1.25 2021/09/04 13:36:07 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/obs200.h>
84 #include <machine/century_bios.h>
85
86 #include <powerpc/spr.h>
87 #include <powerpc/ibm4xx/spr.h>
88
89 #include <powerpc/ibm4xx/cpu.h>
90 #include <powerpc/ibm4xx/dcr4xx.h>
91 #include <powerpc/ibm4xx/ibm405gp.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 u_int32_t pllmode __debugused;
124 u_int32_t psr __debugused;
125 vaddr_t va;
126 u_int memsize;
127
128 /* Disable all external interrupts */
129 mtdcr(DCR_UIC0_BASE + DCR_UIC_ER, 0);
130 pllmode = mfdcr(DCR_CPC0_PLLMR);
131 psr = mfdcr(DCR_CPC0_PSR);
132
133 /* Setup board from BIOS */
134 bios_board_init(info_block, startkernel);
135 memsize = bios_board_memsize_get();
136
137 /* Linear map kernel memory. */
138 for (va = 0; va < endkernel; va += TLB_PG_SIZE)
139 ppc4xx_tlb_reserve(va, va, TLB_PG_SIZE, TLB_EX);
140
141 /* Map console after physmem (see pmap_tlbmiss()). */
142 ppc4xx_tlb_reserve(CONADDR, roundup(memsize, TLB_PG_SIZE), TLB_PG_SIZE,
143 TLB_I | TLB_G);
144
145 /* Initialize IBM405GPr CPU */
146 ibm40x_memsize_init(memsize, startkernel);
147 ibm4xx_init(startkernel, endkernel, pic_ext_intr);
148
149 #ifdef DEBUG
150 bios_board_print();
151 printf(" PLL Mode Register = 0x%08x\n", pllmode);
152 printf(" Chip Pin Strapping Register = 0x%08x\n", psr);
153 #endif
154
155 #ifdef DDB
156 if (boothowto & RB_KDB)
157 Debugger();
158 #endif
159 }
160
161 void
consinit(void)162 consinit(void)
163 {
164
165 #if (NCOM > 0)
166 com_opb_cnattach(OBS200_COM_FREQ, CONADDR, CONSPEED, CONMODE);
167 #endif
168 }
169
170 /*
171 * Machine dependent startup code.
172 */
173 void
cpu_startup(void)174 cpu_startup(void)
175 {
176
177 /*
178 * cpu common startup
179 */
180 ibm4xx_cpu_startup("OpenBlockS S/R IBM PowerPC 405GP Board");
181
182 /*
183 * Set up the board properties database.
184 */
185 bios_board_info_set();
186
187 /*
188 * Now that we have VM, malloc()s are OK in bus_space.
189 */
190 bus_space_mallocok();
191
192 /*
193 * no fake mapiodev
194 */
195 fake_mapiodev = 0;
196 }
197
198 int
ibm4xx_pci_bus_maxdevs(void * v,int busno)199 ibm4xx_pci_bus_maxdevs(void *v, int busno)
200 {
201
202 /*
203 * Bus number is irrelevant. Configuration Mechanism 1 is in
204 * use, can have devices 0-32 (i.e. the `normal' range).
205 */
206 return 31;
207 }
208
209 int
ibm4xx_pci_intr_map(const struct pci_attach_args * pa,pci_intr_handle_t * ihp)210 ibm4xx_pci_intr_map(const struct pci_attach_args *pa, pci_intr_handle_t *ihp)
211 {
212 /*
213 * We need to map the interrupt pin to the interrupt bit
214 * in the UIC associated with it.
215 *
216 * This platform has 4 PCI devices.
217 *
218 # External IRQ Mappings:
219 * dev 7 (Ext IRQ3): Realtek 8139 Ethernet
220 * dev 8 (Ext IRQ0): PCI Connector
221 */
222 static const int irqmap[15/*device*/][4/*pin*/] = {
223 { -1, -1, -1, -1 }, /* 1: none */
224 { -1, -1, -1, -1 }, /* 2: none */
225 { -1, -1, -1, -1 }, /* 3: none */
226 { -1, -1, -1, -1 }, /* 4: none */
227 { -1, -1, -1, -1 }, /* 5: none */
228 { -1, -1, -1, -1 }, /* 6: none */
229 { 3, -1, -1, -1 }, /* 7: none */
230 { 0, -1, -1, -1 }, /* 8: none */
231 { -1, -1, -1, -1 }, /* 9: none */
232 { -1, -1, -1, -1 }, /* 10: none */
233 { -1, -1, -1, -1 }, /* 11: none */
234 { -1, -1, -1, -1 }, /* 12: none */
235 { -1, -1, -1, -1 }, /* 13: none */
236 { -1, -1, -1, -1 }, /* 14: none */
237 { -1, -1, -1, -1 }, /* 15: none */
238 };
239
240 int pin, dev, irq;
241
242 pin = pa->pa_intrpin;
243 dev = pa->pa_device;
244 *ihp = -1;
245
246 /* if interrupt pin not used... */
247 if (pin == 0)
248 return 1;
249
250 if (pin > 4) {
251 printf("pci_intr_map: bad interrupt pin %d\n", pin);
252 return 1;
253 }
254
255 if ((dev < 1) || (dev > 15)) {
256 printf("pci_intr_map: bad device %d\n", dev);
257 return 1;
258 }
259
260
261 if ((irq = irqmap[dev - 1][pin - 1]) == -1) {
262 printf("pci_intr_map: no IRQ routing for device %d pin %d\n",
263 dev, pin);
264 return 1;
265 }
266
267 *ihp = irq + 25;
268 return 0;
269 }
270
271 void
ibm4xx_pci_conf_interrupt(void * v,int bus,int dev,int pin,int swiz,int * iline)272 ibm4xx_pci_conf_interrupt(void *v, int bus, int dev, int pin, int swiz,
273 int *iline)
274 {
275 static const int ilinemap[15/*device*/] = {
276 -1, -1, -1, -1, /* device 1 - 4 */
277 -1, -1, 28, 25, /* device 5 - 8 */
278 -1, -1, -1, -1, /* device 9 - 12 */
279 -1, -1, -1, /* device 13 - 15 */
280 };
281
282 if (bus == 0) {
283 if ((dev < 1) || (dev > 15)) {
284 printf("pci_intr_map: bad device %d\n", dev);
285 *iline = 0;
286 return;
287 }
288 *iline = ilinemap[dev - 1];
289 } else
290 *iline = 19 + ((swiz + dev + 1) & 3);
291 }
292