1 /* $NetBSD: machdep.c,v 1.20 2024/03/05 14:15:29 thorpej Exp $ */
2
3 /*
4 * Copyright (c) 1988 University of Utah.
5 * Copyright (c) 1992, 1993
6 * The Regents of the University of California. All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley by
9 * the Systems Programming Group of the University of Utah Computer
10 * Science Department, The Mach Operating System project at
11 * Carnegie-Mellon University and Ralph Campbell.
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its contributors
22 * may be used to endorse or promote products derived from this software
23 * without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * SUCH DAMAGE.
36 *
37 * @(#)machdep.c 8.3 (Berkeley) 1/12/94
38 * from: Utah Hdr: machdep.c 1.63 91/04/24
39 */
40
41 #include <sys/cdefs.h>
42 __KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.20 2024/03/05 14:15:29 thorpej Exp $");
43
44 #include "opt_ddb.h"
45
46 #include <sys/param.h>
47 #include <sys/systm.h>
48 #include <sys/extent.h>
49 #include <sys/kernel.h>
50 #include <sys/buf.h>
51 #include <sys/mbuf.h>
52 #include <sys/reboot.h>
53 #include <sys/mount.h>
54 #include <sys/kcore.h>
55 #include <sys/boot_flag.h>
56 #include <sys/ksyms.h>
57 #include <sys/proc.h>
58 #include <sys/device.h>
59 #include <sys/cpu.h>
60
61 #include <uvm/uvm_extern.h>
62
63 #include <dev/cons.h>
64
65 #include <ufs/mfs/mfs_extern.h> /* mfs_initminiroot() */
66
67 #include <mips/cache.h>
68 #include <machine/psl.h>
69 #include <machine/autoconf.h>
70 #include <emips/stand/common/prom_iface.h>
71 #include <machine/sysconf.h>
72 #include <machine/bootinfo.h>
73 #include <machine/locore.h>
74 #include <emips/emips/machdep.h>
75 #include <machine/emipsreg.h>
76
77 #define _EMIPS_BUS_DMA_PRIVATE
78 #include <machine/bus.h>
79
80 #if NKSYMS || defined(DDB) || defined(MODULAR)
81 #include <machine/db_machdep.h>
82 #include <ddb/db_extern.h>
83 #endif
84
85 vaddr_t iospace;
86 vsize_t iospace_size = 64 * 1024; /* BUGBUG make it an option? */
87
88 #include "ksyms.h"
89
90 /*
91 * Extent map to manage I/O register space. We allocate storage for
92 * 32 regions in the map. iomap_ex_malloc_safe will indicate that it's
93 * safe to use malloc() to dynamically allocate region descriptors in
94 * case we run out.
95 */
96 static long iomap_ex_storage[EXTENT_FIXED_STORAGE_SIZE(32) / sizeof(long)];
97 static struct extent *iomap_ex;
98 static int iomap_ex_malloc_safe;
99
100 /* maps for VM objects */
101 struct vm_map *phys_map = NULL;
102
103 int systype; /* mother board type */
104 char *bootinfo = NULL; /* pointer to bootinfo structure */
105 int cpuspeed = 30; /* approx # instr per usec. */
106 intptr_t physmem_boardmax; /* {model,SIMM}-specific bound on physmem */
107 int mem_cluster_cnt;
108 phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX];
109
110 void mach_init (int, char *[], int, intptr_t, u_int, char *); /* XXX */
111
112 /* Motherboard or system-specific initialization vector */
113 static void unimpl_bus_reset(void);
114 static void unimpl_cons_init(void);
115 static void unimpl_iointr(uint32_t, vaddr_t, uint32_t);
116 static void unimpl_intr_establish(device_t, void *, int,
117 int (*)(void *, void *), void *);
118 static int unimpl_memsize(void *);
119
120 struct platform platform = {
121 "iobus not set",
122 unimpl_bus_reset,
123 unimpl_cons_init,
124 unimpl_iointr,
125 unimpl_intr_establish,
126 unimpl_memsize
127 };
128
129 extern char *esym; /* XXX */
130 extern struct consdev promcd; /* XXX */
131 extern const struct callback *callv;
132 extern const struct callback callvec;
133
134 /*
135 * Do all the stuff that locore normally does before calling main().
136 * The first 4 arguments are passed by PROM monitor, and remaining two
137 * are built on temporary stack by our boot loader.
138 */
139 void
mach_init(int argc,char * argv[],int code,intptr_t cv,u_int bim,char * bip)140 mach_init(int argc, char *argv[], int code, intptr_t cv, u_int bim, char *bip)
141 {
142 char *cp;
143 const char *bootinfo_msg;
144 u_long first, last;
145 int i, howtoboot;
146 #if NKSYMS || defined(DDB) || defined(MODULAR)
147 void *ssym = 0;
148 struct btinfo_symtab *bi_syms;
149 #endif
150 void *kernend;
151 extern char edata[], end[]; /* XXX */
152
153 /* Set up bootinfo structure looking at stack. */
154 if (bim == BOOTINFO_MAGIC) {
155 struct btinfo_magic *bi_magic;
156
157 bootinfo = bip;
158 bi_magic = lookup_bootinfo(BTINFO_MAGIC);
159 if (bi_magic == NULL || bi_magic->magic != BOOTINFO_MAGIC)
160 bootinfo_msg =
161 "invalid magic number in bootinfo structure.\n";
162 else
163 bootinfo_msg = NULL;
164 } else
165 bootinfo_msg = "invalid bootinfo pointer (old bootblocks?)\n";
166
167 /*
168 * Look at arguments passed to us and compute boothowto.
169 * Do it before we decide to keep symbols.
170 * NB: "boothowto" is in the BSS.
171 */
172 howtoboot = 0;
173 #ifdef KADB
174 howtoboot |= RB_KDB;
175 #endif
176 for (i = 1; i < argc; i++) {
177 for (cp = argv[i]; *cp; cp++) {
178 switch (*cp) {
179
180 #define RB_NOSYMBOLS 0x10000000
181 case 'e': /* empty the symtable */
182 howtoboot |= RB_NOSYMBOLS;
183 break;
184
185 case 'n': /* ask for names */
186 howtoboot |= RB_ASKNAME;
187 break;
188
189 case 'N': /* don't ask for names */
190 howtoboot &= ~RB_ASKNAME;
191 break;
192
193 default:
194 BOOT_FLAG(*cp, howtoboot); /* see sys/boot_flag.h */
195 break;
196 }
197 }
198 }
199
200 /* clear the BSS segment */
201 #if NKSYMS || defined(DDB) || defined(MODULAR)
202 bi_syms = lookup_bootinfo(BTINFO_SYMTAB);
203
204 /* Was it a valid bootinfo symtab info? */
205 if ((bi_syms != NULL) && (!(howtoboot & RB_NOSYMBOLS))) {
206 ssym = (void *)(intptr_t)bi_syms->ssym;
207 esym = (void *)(intptr_t)bi_syms->esym;
208 kernend = (void *)mips_round_page(esym);
209 memset(edata, 0, end - edata);
210 } else
211 #endif
212 {
213 kernend = (char *)mips_round_page(end);
214 /* should be done by bootloader? */
215 memset(edata, 0, (char *)kernend - (char *)edata);
216 }
217
218 /* Initialize callv so we can do PROM output... */
219 callv = (code == PROM_MAGIC) ? (void *)cv : &callvec;
220
221 /* Use PROM console output until we initialize a console driver. */
222 cn_tab = &promcd;
223
224 #if 1
225 if (bootinfo_msg != NULL)
226 printf(bootinfo_msg);
227 #endif
228 uvm_md_init();
229
230 /*
231 * Copy exception-dispatch code down to exception vector.
232 * Initialize locore-function vector.
233 * Clear out the I and D caches.
234 */
235 mips_vector_init(NULL, false);
236
237 /*
238 * We know the CPU type now. Initialize our DMA tags (might
239 * need this early, for certain types of console devices!!).
240 */
241 emips_bus_dma_init();
242
243 /* Look at argv[0] and compute bootdev */
244 makebootdev(argv[0]);
245
246 boothowto = howtoboot & ~RB_NOSYMBOLS;
247
248 /*
249 * Check to see if a mini-root was loaded into memory. It resides
250 * at the start of the next page just after the end of BSS.
251 */
252 if (boothowto & RB_MINIROOT)
253 kernend = (char *)kernend
254 + round_page(mfs_initminiroot(kernend));
255
256 #if NKSYMS || defined(DDB) || defined(MODULAR)
257 /* init symbols if present */
258 if (esym) {
259 ksyms_addsyms_elf((char *)esym - (char *)ssym, ssym, esym);
260 }
261 #endif
262 #ifdef DDB
263 if (boothowto & RB_KDB)
264 Debugger();
265 #endif
266
267 /*
268 * Initialize physmem_boardmax; assume no SIMM-bank limits.
269 * Adjust later in model-specific code if necessary.
270 */
271 physmem_boardmax = MIPS_MAX_MEM_ADDR;
272
273 /*
274 * Determine what model of computer we are running on.
275 */
276 systype = ((prom_systype() >> 16) & 0xff);
277 if (systype >= nsysinit) {
278 platform_not_supported();
279 /* NOTREACHED */
280 }
281
282 /* Machine specific initialization. */
283 (*sysinit[systype].init)();
284
285 /* Find out how much memory is available. */
286 physmem = (*platform.memsize)(kernend);
287
288 /*
289 * Load the rest of the available pages into the VM system.
290 * NB: The kernel can span multiple segments.
291 */
292 for (i = 0, physmem = 0; i < mem_cluster_cnt; ++i) {
293 first = mem_clusters[i].start;
294 if (first < round_page(MIPS_KSEG0_TO_PHYS(kernend)))
295 first = round_page(MIPS_KSEG0_TO_PHYS(kernend));
296 last = mem_clusters[i].start + mem_clusters[i].size;
297 physmem += atop(mem_clusters[i].size);
298
299 /* if the kernel spans multiple segments (does on ML40x) */
300 if (last <= first)
301 continue;
302
303 uvm_page_physload(atop(first), atop(last), atop(first),
304 atop(last), VM_FREELIST_DEFAULT);
305 }
306
307 /*
308 * Initialize error message buffer (at end of core).
309 */
310 mips_init_msgbuf();
311
312 /*
313 * Initialize the virtual memory system.
314 */
315 iospace = pmap_limits.virtual_start;
316 pmap_limits.virtual_start += iospace_size;
317 pmap_bootstrap();
318
319 mips_init_lwp0_uarea();
320 }
321
322 void
mips_machdep_cache_config(void)323 mips_machdep_cache_config(void)
324 {
325 }
326
327 void
consinit(void)328 consinit(void)
329 {
330 /*
331 * Init I/O memory extent map. Must be done before cninit()
332 * is called; we may want to use iospace in the console routines.
333 */
334 KASSERT(iospace != 0);
335 iomap_ex = extent_create("iomap", iospace,
336 iospace + iospace_size - 1,
337 (void *) iomap_ex_storage, sizeof(iomap_ex_storage),
338 EX_NOCOALESCE|EX_NOWAIT);
339
340 /*
341 * Up until now we have kept the TLB disabled,
342 * and that allowed the "PROM" to work.
343 * Specifically, romputc() and the debugger's getc() functions worked.
344 * Now is the last chance we get to turn it on.
345 * That means no more console I/O until autoconf() [sigh!], or..
346 * The platform-specific code will have to map [1:1 probably]
347 * the I/O registers.
348 */
349 register_t s = mips_cp0_status_read();
350 s &= ~MIPS_SR_TS;
351 mips_cp0_status_write(s);
352
353 (*platform.cons_init)();
354
355 /*
356 * Do NOT call cninit(); It will clobber cn_tab using constab[]
357 * which we do not use
358 */
359 }
360
361 /*
362 * Allocates a virtual range suitable for mapping in physical memory.
363 * Uses resource maps when allocating space, which is allocated from
364 * the IOMAP submap. SIZE is a linear range (NOT vax-pages like the VAX).
365 * If the page requested is bigger than a logical page, space is
366 * allocated from the kernel map instead.
367 */
368 vaddr_t
mips_map_physmem(paddr_t phys,vsize_t size)369 mips_map_physmem(paddr_t phys, vsize_t size)
370 {
371 vaddr_t addr;
372 int error;
373 static int warned = 0;
374
375 size += phys & PAGE_MASK;
376 if (size >= PAGE_SIZE) {
377 addr = uvm_km_alloc(kernel_map, size, 0, UVM_KMF_VAONLY);
378 if (addr == 0)
379 panic("mips_map_physmem: kernel map full");
380 } else {
381 error = extent_alloc(iomap_ex, size, PAGE_SIZE, 0,
382 EX_FAST | EX_NOWAIT |
383 (iomap_ex_malloc_safe ? EX_MALLOCOK : 0), (u_long *)&addr);
384 if (error) {
385 if (warned++ == 0) /* Warn only once */
386 printf("mips_map_physmem: iomap too small");
387 return 0;
388 }
389 }
390 ioaccess(addr, phys, size);
391 #ifdef PHYSMEMDEBUG
392 printf("mips_map_physmem: alloc'ed %x bytes for paddr %x, at %x\n",
393 size, phys, addr);
394 #endif
395 return addr | (phys & PAGE_MASK);
396 }
397
398 /*
399 * Unmaps the previous mapped (addr, size) pair.
400 */
401 void
mips_unmap_physmem(vaddr_t addr,vsize_t size)402 mips_unmap_physmem(vaddr_t addr, vsize_t size)
403 {
404 #ifdef PHYSMEMDEBUG
405 printf("mips_unmap_physmem: unmapping %x bytes at addr %x\n",
406 size, addr);
407 #endif
408 size += addr & PAGE_MASK;
409 addr &= ~PAGE_MASK;
410
411 iounaccess(addr, size);
412 if (size >= PAGE_SIZE)
413 uvm_km_free(kernel_map, addr, size, UVM_KMF_VAONLY);
414 else if (extent_free(iomap_ex, addr, size,
415 EX_NOWAIT | (iomap_ex_malloc_safe ? EX_MALLOCOK : 0)))
416 printf("mips_unmap_physmem: addr 0x%llx size %llx: "
417 "can't free region\n", (long long)addr, (long long)size);
418 }
419
420 /*
421 * Machine-dependent startup code: allocate memory for variable-sized
422 * tables.
423 */
424 void
cpu_startup(void)425 cpu_startup(void)
426 {
427 vaddr_t minaddr, maxaddr;
428 char pbuf[9];
429 #ifdef DEBUG
430 extern int pmapdebug; /* XXX */
431 int opmapdebug = pmapdebug;
432
433 pmapdebug = 0;
434 #endif
435
436 /*
437 * Good {morning,afternoon,evening,night}.
438 */
439 printf("%s%s", copyright, version);
440 printf("%s\n", cpu_getmodel());
441 format_bytes(pbuf, sizeof(pbuf), ctob(physmem));
442 printf("total memory = %s\n", pbuf);
443
444 minaddr = 0;
445
446 /*
447 * Allocate a submap for physio
448 */
449 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr,
450 VM_PHYS_SIZE, 0, false, NULL);
451
452 /*
453 * No need to allocate an mbuf cluster submap. Mbuf clusters
454 * are allocated via the pool allocator, and we use KSEG to
455 * map those pages.
456 */
457
458 iomap_ex_malloc_safe = 1;
459
460 #ifdef DEBUG
461 pmapdebug = opmapdebug;
462 #endif
463 format_bytes(pbuf, sizeof(pbuf), ptoa(uvm_availmem(false)));
464 printf("avail memory = %s\n", pbuf);
465 }
466
467 /*
468 * Look up information in bootinfo of boot loader.
469 */
470 void *
lookup_bootinfo(int type)471 lookup_bootinfo(int type)
472 {
473 struct btinfo_common *bt;
474 char *help = bootinfo;
475
476 /* Check for a bootinfo record first. */
477 if (help == NULL)
478 return (NULL);
479
480 do {
481 bt = (struct btinfo_common *)help;
482 if (bt->type == type)
483 return ((void *)help);
484 help += bt->next;
485 } while (bt->next != 0 &&
486 (size_t)help < (size_t)bootinfo + BOOTINFO_SIZE);
487
488 return (NULL);
489 }
490
491 void
cpu_reboot(volatile int howto,char * bootstr)492 cpu_reboot(volatile int howto, /* XXX volatile to keep gcc happy */
493 char *bootstr)
494 {
495
496 /* take a snap shot before clobbering any registers */
497 if (curlwp)
498 savectx(curpcb);
499
500 #ifdef DEBUG
501 if (panicstr)
502 stacktrace();
503 #endif
504
505 /* If system is cold, just halt. */
506 if (cold) {
507 howto |= RB_HALT;
508 goto haltsys;
509 }
510
511 /* If "always halt" was specified as a boot flag, obey. */
512 if ((boothowto & RB_HALT) != 0)
513 howto |= RB_HALT;
514
515 boothowto = howto;
516 if ((howto & RB_NOSYNC) == 0) {
517 /*
518 * Synchronize the disks....
519 */
520 vfs_shutdown();
521 }
522
523 /* Disable interrupts. */
524 splhigh();
525
526 /* If rebooting and a dump is requested do it. */
527 if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP)
528 dumpsys();
529
530 haltsys:
531 /* run any shutdown hooks */
532 doshutdownhooks();
533
534 pmf_system_shutdown(boothowto);
535
536 /* Finally, halt/reboot the system. */
537 printf("%s\n\n", ((howto & RB_HALT) != 0) ? "halted." : "rebooting...");
538
539 prom_halt(howto);
540 for (;;) ;
541 /*NOTREACHED*/
542 }
543
544 #if defined(MIPS_4GB_PHYSICAL_MEMORY)
545 #define trim_memory(n) n
546 #else
547 #if 0
548 #define TOO_MUCH (MIPS_PHYS_MASK+1)
549 #else
550 #define TOO_MUCH (2*64*1024*1024)
551 #endif
552 u_long trim_memory(uint32_t nbytes);/*cheat*/
trim_memory(uint32_t nbytes)553 u_long trim_memory(uint32_t nbytes)
554 {
555 int i;
556 u_long first, last;
557
558 nbytes *= 4096;
559 if (nbytes <= TOO_MUCH)
560 return nbytes;
561
562 /* We have more memory than we can handle */
563
564 mem_clusters[mem_cluster_cnt].start = 0;/* sentinel record */
565 mem_clusters[mem_cluster_cnt].size = 0;
566 for (i = 0; i < mem_cluster_cnt;) {
567 first = mem_clusters[i].start;
568 last = mem_clusters[i].start + mem_clusters[i].size;
569
570 if (first > TOO_MUCH) {
571 printf("Too much memory, ignoring memory "
572 "range %08lx..%08lx\n", first, last);
573 memcpy(mem_clusters+i,mem_clusters+i+1,
574 (sizeof(mem_clusters[0])*(mem_cluster_cnt-i)));
575 mem_cluster_cnt--;
576 continue;
577 }
578
579 if (last > TOO_MUCH) {
580 last = TOO_MUCH;
581 printf("Too much memory in cluster %d, trimming "
582 "memory to range %08lx..%08lx\n",
583 i, first, last);
584 mem_clusters[i].size = last - mem_clusters[i].start;
585 }
586 i++;
587 }
588 return TOO_MUCH;
589 }
590 #endif
591
592 /*
593 * Find out how much memory is available by testing memory.
594 */
595 int
memsize_scan(void * first)596 memsize_scan(void *first)
597 {
598 int i, mem;
599 char *cp;
600
601 mem = btoc((paddr_t)first - MIPS_KSEG0_START);
602 cp = (char *)MIPS_PHYS_TO_KSEG1(mem << PGSHIFT);
603 while (cp < (char *)physmem_boardmax) {
604 int j;
605 if (badaddr(cp, 4))
606 break;
607 i = *(int *)cp;
608 j = ((int *)cp)[4];
609 *(int *)cp = 0xa5a5a5a5;
610 /*
611 * Data will persist on the bus if we read it right away.
612 * Have to be tricky here.
613 */
614 ((int *)cp)[4] = 0x5a5a5a5a;
615 wbflush();
616 if (*(int *)cp != 0xa5a5a5a5)
617 break;
618 *(int *)cp = i;
619 ((int *)cp)[4] = j;
620 cp += PAGE_SIZE;
621 mem++;
622 }
623
624 /*
625 * Now that we know how much memory we have, initialize the
626 * mem cluster array.
627 */
628 mem_clusters[0].start = 0; /* XXX is this correct? */
629 mem_clusters[0].size = ctob(mem);
630 mem_cluster_cnt = 1;
631
632 /* clear any memory error conditions possibly caused by probe */
633 (*platform.bus_reset)();
634 return (mem);
635 }
636
637 /*
638 * Find out how much memory is available by testing memory, starting at first.
639 * Returns the total number of pages.
640 */
641 int
memsize_pmt(void * first)642 memsize_pmt(void * first)
643 {
644 int i, mem;
645 struct _Pmt *Pmt = ThePmt;
646 struct _Sram *ram;
647 uint32_t addr, len;
648
649 /*
650 * Build the RAM memory map from the PMT.
651 */
652 mem = 0;
653 for (i = 0; i < VM_PHYSSEG_MAX; Pmt--) {
654 uint16_t tag = Pmt->Tag;
655
656 if (tag == PMTTAG_END_OF_TABLE)
657 break;
658
659 if ((tag != PMTTAG_SRAM) && (tag != PMTTAG_DDRAM))
660 continue;
661
662 /*
663 * Got a memory controller segment,
664 * scan all the controllers in it
665 */
666 ram = (struct _Sram *)(Pmt->TopOfPhysicalAddress << 16);
667
668 for (;(ram->BaseAddressAndTag & SRAMBT_TAG) == tag;) {
669 addr = ram->BaseAddressAndTag & SRAMBT_BASE;
670 len = ram->Control & SRAMST_SIZE;
671
672 mem_clusters[i].start = addr;
673 mem_clusters[i].size = len;
674 printf("memory segment %2d start %08lx size %08lx\n", i,
675 (long)mem_clusters[i].start,
676 (long)mem_clusters[i].size);
677 i++;
678 mem += len;
679
680 /* SRAM and DDRAM have different sizes */
681 ram = (tag == PMTTAG_SRAM) ? ram+1 : ram+2;
682 }
683 }
684 mem_cluster_cnt = i;
685
686 return trim_memory(btoc(mem));
687 }
688 /*
689 * Ensure all platform vectors are always initialized.
690 */
691 static void
unimpl_bus_reset(void)692 unimpl_bus_reset(void)
693 {
694
695 panic("sysconf.init didn't set bus_reset");
696 }
697
698 static void
unimpl_cons_init(void)699 unimpl_cons_init(void)
700 {
701
702 panic("sysconf.init didn't set cons_init");
703 }
704
705 static void
unimpl_iointr(uint32_t status,vaddr_t pc,uint32_t ipending)706 unimpl_iointr(uint32_t status, vaddr_t pc, uint32_t ipending)
707 {
708
709 panic("sysconf.init didn't set intr");
710 }
711
712 static void
unimpl_intr_establish(device_t dev,void * cookie,int level,int (* handler)(void *,void *),void * arg)713 unimpl_intr_establish(device_t dev, void *cookie, int level,
714 int (*handler) (void *,void *), void *arg)
715 {
716
717 panic("sysconf.init didn't set intr_establish");
718 }
719
720 static int
unimpl_memsize(void * first)721 unimpl_memsize(void * first)
722 {
723
724 panic("sysconf.init didn't set memsize");
725 }
726
727 /*
728 * Wait "n" microseconds.
729 */
730 void
delay(int n)731 delay(int n)
732 {
733
734 DELAY(n);
735 }
736