1 /* $NetBSD: machdep.c,v 1.16 2024/03/05 14:15:31 thorpej Exp $ */
2
3 /*
4 * Copyright (c) 2002 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Lennart Augustsson (lennart@augustsson.net) at Sandburst Corp.
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 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 /*
33 * Copyright (C) 1995, 1996 Wolfgang Solfrank.
34 * Copyright (C) 1995, 1996 TooLs GmbH.
35 * All rights reserved.
36 *
37 * Redistribution and use in source and binary forms, with or without
38 * modification, are permitted provided that the following conditions
39 * are met:
40 * 1. Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * 2. Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in the
44 * documentation and/or other materials provided with the distribution.
45 * 3. All advertising materials mentioning features or use of this software
46 * must display the following acknowledgement:
47 * This product includes software developed by TooLs GmbH.
48 * 4. The name of TooLs GmbH may not be used to endorse or promote products
49 * derived from this software without specific prior written permission.
50 *
51 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
52 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
53 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
54 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
55 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
56 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
57 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
58 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
59 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
60 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
61 */
62
63 #include <sys/cdefs.h>
64 __KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.16 2024/03/05 14:15:31 thorpej Exp $");
65
66 #include "opt_compat_netbsd.h"
67 #include "opt_ddb.h"
68 #include "opt_ddbparam.h"
69 #include "opt_inet.h"
70 #include "opt_ccitt.h"
71 #include "opt_ns.h"
72
73 #include <sys/param.h>
74 #include <sys/buf.h>
75 #include <sys/bus.h>
76 #include <sys/conf.h>
77 #include <sys/device.h>
78 #include <sys/exec.h>
79 #include <sys/extent.h>
80 #include <sys/intr.h>
81 #include <sys/kernel.h>
82 #include <sys/kgdb.h>
83 #include <sys/ksyms.h>
84 #include <sys/mbuf.h>
85 #include <sys/mount.h>
86 #include <sys/msgbuf.h>
87 #include <sys/proc.h>
88 #include <sys/reboot.h>
89 #include <sys/syscallargs.h>
90 #include <sys/sysctl.h>
91 #include <sys/syslog.h>
92 #include <sys/systm.h>
93
94 #include <uvm/uvm_extern.h>
95
96 #include <machine/powerpc.h>
97 #include <machine/pmppc.h>
98
99 #include <powerpc/db_machdep.h>
100 #include <powerpc/pio.h>
101 #include <powerpc/pmap.h>
102 #include <powerpc/trap.h>
103
104 #include <powerpc/oea/bat.h>
105 #include <powerpc/pic/picvar.h>
106
107 #include <ddb/db_extern.h>
108
109 #include <dev/cons.h>
110
111 #include <dev/ic/cpc700reg.h>
112 #include <dev/ic/cpc700uic.h>
113
114 #include "com.h"
115 #if (NCOM > 0)
116 #include <sys/termios.h>
117 #include <dev/ic/comreg.h>
118 #include <dev/ic/comvar.h>
119 #endif
120
121 #include "ksyms.h"
122
123 struct powerpc_bus_space pmppc_mem_tag = {
124 _BUS_SPACE_LITTLE_ENDIAN|_BUS_SPACE_MEM_TYPE,
125 0, 0, 0xffffffff,
126 NULL,
127 };
128 struct powerpc_bus_space pmppc_pci_io_tag = {
129 _BUS_SPACE_LITTLE_ENDIAN|_BUS_SPACE_MEM_TYPE,
130 0, CPC_PCI_IO_BASE, 0xffffffff,
131 NULL,
132 };
133
134 static char ex_storage[1][EXTENT_FIXED_STORAGE_SIZE(8)]
135 __attribute__((aligned(8)));
136
137
138 #ifdef KGDB
139 char kgdb_devname[] = KGDB_DEVNAME;
140 int comkgdbaddr = KGDB_DEVADDR;
141 int comkgdbrate = KGDB_DEVRATE;
142
143 #ifndef KGDB_DEVMODE
144 #define KGDB_DEVMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */
145 #endif
146 int comkgdbmode = KGDB_DEVMODE;
147
148 void kgdb_port_init(void);
149 #endif /* KGDB */
150
151 /*
152 * Global variables used here and there
153 */
154 struct mem_region physmemr[2], availmemr[2];
155
156 struct a_config a_config;
157
158 void initppc(u_int, u_int, u_int, void *); /* Called from locore */
159 void pmppc_setup(void);
160 void setleds(int leds);
161
162 void
initppc(u_int startkernel,u_int endkernel,u_int args,void * btinfo)163 initppc(u_int startkernel, u_int endkernel, u_int args, void *btinfo)
164 {
165 extern void consinit(void);
166 extern u_long ticks_per_sec;
167 extern unsigned char edata[], end[];
168
169 memset(&edata, 0, end - edata); /* clear BSS */
170
171 pmppc_setup();
172
173 physmemr[0].start = 0;
174 physmemr[0].size = a_config.a_mem_size;
175 physmemr[1].size = 0;
176 availmemr[0].start = (endkernel + PGOFSET) & ~PGOFSET;
177 availmemr[0].size = a_config.a_mem_size - availmemr[0].start;
178 availmemr[1].size = 0;
179
180 #ifdef BOOTHOWTO
181 /*
182 * boothowto
183 */
184 boothowto = BOOTHOWTO;
185 #endif
186
187 if (bus_space_init(&pmppc_mem_tag, "iomem",
188 ex_storage[0], sizeof(ex_storage[0])))
189 panic("bus_space_init failed");
190
191 /*
192 * Initialize the BAT registers
193 */
194 oea_batinit(
195 PMPPC_FLASH_BASE, BAT_BL_256M, /* flash (etc) memory 256M area */
196 CPC_PCI_MEM_BASE, BAT_BL_256M, /* PCI memory 256M area */
197 CPC_PCI_IO_BASE, BAT_BL_128M, /* PCI I/O 128M area */
198 0);
199
200 /*
201 * Set up trap vectors
202 */
203 oea_init(NULL);
204
205 /*
206 * Get CPU clock
207 */
208 ticks_per_sec = a_config.a_bus_freq;
209 ticks_per_sec /= 4; /* 4 cycles per DEC tick */
210 cpu_timebase = ticks_per_sec;
211
212 /*
213 * Set up console.
214 */
215 consinit(); /* XXX should not be here */
216
217 printf("console set up\n");
218
219 uvm_md_init();
220
221 /*
222 * Initialize pmap module.
223 */
224 pmap_bootstrap(startkernel, endkernel);
225
226 #ifdef KGDB
227 kgdb_port_init();
228 if (boothowto & RB_KDB) {
229 kgdb_debug_init = 1;
230 kgdb_connect(1);
231 }
232 #endif
233 }
234
235 void
mem_regions(struct mem_region ** mem,struct mem_region ** avail)236 mem_regions(struct mem_region **mem, struct mem_region **avail)
237 {
238 *mem = physmemr;
239 *avail = availmemr;
240 }
241
242 /*
243 * Machine dependent startup code.
244 */
245 void
cpu_startup(void)246 cpu_startup(void)
247 {
248
249 oea_startup(NULL);
250
251 /*
252 * Now that we have VM, malloc()s are OK in bus_space.
253 */
254 bus_space_mallocok();
255
256 /* Set up the PCI bus tag. */
257 if (bus_space_init(&pmppc_pci_io_tag, "pcimem", NULL, 0))
258 panic("bus_space_init pci failed");
259
260 /* Set up interrupt controller */
261 cpc700_init_intr(&pmppc_mem_tag, CPC_UIC_BASE,
262 CPC_INTR_MASK(PMPPC_I_ETH_INT), 0);
263
264 pic_init();
265 (void)setup_cpc700();
266 oea_install_extint(pic_ext_intr);
267
268 #if 0
269 /* XXX doesn't seem to be needed anymore */
270 /*
271 * Now allow hardware interrupts.
272 */
273 __asm volatile ("mfmsr %0; ori %0,%0,%1; mtmsr %0"
274 : "=r"(msr) : "K"(PSL_EE));
275 #endif
276 }
277
278 /*
279 * consinit
280 * Initialize system console.
281 */
282 void
consinit(void)283 consinit(void)
284 {
285 static int initted;
286 #if (NCOM > 0)
287 bus_space_tag_t tag;
288 #endif
289
290 if (initted)
291 return;
292 initted = 1;
293
294 #if (NCOM > 0)
295 tag = &pmppc_mem_tag;
296
297 if(comcnattach(tag, CPC_COM0, 9600, CPC_COM_SPEED(a_config.a_bus_freq),
298 COM_TYPE_NORMAL,
299 ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8)))
300 panic("can't init serial console");
301 else
302 return;
303 #endif
304
305 panic("console device missing -- serial console not in kernel");
306 /* Of course, this is moot if there is no console... */
307 }
308
309 #ifdef KGDB
310 void
kgdb_port_init(void)311 kgdb_port_init(void)
312 {
313 #if (NCOM > 0)
314 if(!strcmp(kgdb_devname, "com")) {
315 bus_space_tag_t tag = &pmppc_mem_tag;
316 com_kgdb_attach(tag, comkgdbaddr, comkgdbrate,
317 CPC_COM_SPEED(a_config.a_bus_freq),
318 COM_TYPE_NORMAL, comkgdbmode);
319 }
320 #endif
321 }
322 #endif
323
324 /*
325 * Halt or reboot the machine after syncing/dumping according to howto.
326 */
327 void
cpu_reboot(int howto,char * what)328 cpu_reboot(int howto, char *what)
329 {
330 static int syncing;
331 static char str[256];
332 char *ap = str, *ap1 = ap;
333 extern void disable_intr(void);
334
335 boothowto = howto;
336 if (!cold && !(howto & RB_NOSYNC) && !syncing) {
337 syncing = 1;
338 vfs_shutdown(); /* sync */
339 }
340 splhigh();
341 if (howto & RB_HALT) {
342 doshutdownhooks();
343 pmf_system_shutdown(boothowto);
344 printf("halted\n\n");
345 while(1);
346 }
347 if (!cold && (howto & RB_DUMP))
348 oea_dumpsys();
349 doshutdownhooks();
350
351 pmf_system_shutdown(boothowto);
352 printf("rebooting\n\n");
353 if (what && *what) {
354 if (strlen(what) > sizeof str - 5)
355 printf("boot string too large, ignored\n");
356 else {
357 strcpy(str, what);
358 ap1 = ap = str + strlen(str);
359 *ap++ = ' ';
360 }
361 }
362 *ap++ = '-';
363 if (howto & RB_SINGLE)
364 *ap++ = 's';
365 if (howto & RB_KDB)
366 *ap++ = 'd';
367 *ap++ = 0;
368 if (ap[-2] == '-')
369 *ap1 = 0;
370
371 disable_intr();
372
373 /* Write the two byte reset sequence to the reset register. */
374 out8(PMPPC_RESET, PMPPC_RESET_SEQ_STEP1);
375 out8(PMPPC_RESET, PMPPC_RESET_SEQ_STEP2);
376
377 while (1);
378 }
379
380 void
setleds(int leds)381 setleds(int leds)
382 {
383 out8(PMPPC_LEDS, leds);
384 }
385
386 void
pmppc_setup(void)387 pmppc_setup(void)
388 {
389 uint config0, config1;
390
391 config0 = in8(PMPPC_CONFIG0);
392 config1 = in8(PMPPC_CONFIG1);
393
394 /* from page 2-8 in the Artesyn User's manual */
395 a_config.a_boot_device = config1 & 0x80 ? A_BOOT_FLASH : A_BOOT_ROM;
396 a_config.a_has_ecc = (config1 & 0x40) != 0;
397 switch (config1 & 0x30) {
398 case 0x00: a_config.a_mem_size = 32 * 1024 * 1024; break;
399 case 0x10: a_config.a_mem_size = 64 * 1024 * 1024; break;
400 case 0x20: a_config.a_mem_size = 128 * 1024 * 1024; break;
401 case 0x30: a_config.a_mem_size = 256 * 1024 * 1024; break;
402 }
403 a_config.a_l2_cache = (config1 >> 2) & 3;
404 switch (config1 & 0x03) {
405 case 0x00: a_config.a_bus_freq = 66666666; break;
406 case 0x01: a_config.a_bus_freq = 83333333; break;
407 case 0x02: a_config.a_bus_freq = 100000000; break;
408 case 0x03: a_config.a_bus_freq = 0; break; /* XXX */
409 }
410 a_config.a_is_monarch = (config0 & 0x80) == 0;
411 a_config.a_has_eth = (config0 & 0x20) != 0;
412 a_config.a_has_rtc = (config0 & 0x10) == 0;
413 switch (config0 & 0x0c) {
414 case 0x00: a_config.a_flash_size = 256 * 1024 * 1024; break;
415 case 0x04: a_config.a_flash_size = 128 * 1024 * 1024; break;
416 case 0x08: a_config.a_flash_size = 64 * 1024 * 1024; break;
417 case 0x0c: a_config.a_flash_size = 32 * 1024 * 1024; break;
418 }
419 switch (config0 & 0x03) {
420 case 0x00: a_config.a_flash_width = 64; break;
421 case 0x01: a_config.a_flash_width = 32; break;
422 case 0x02: a_config.a_flash_width = 16; break;
423 case 0x03: a_config.a_flash_width = 0; break;
424 }
425 }
426