machdep.c revision 1.1
1 /* $NetBSD: machdep.c,v 1.1 2009/08/06 00:50:26 matt Exp $ */ 2 3 /* 4 * Copyright 2001, 2002 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Jason R. Thorpe and Simon Burge for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 /* 39 * Copyright (c) 1992, 1993 40 * The Regents of the University of California. All rights reserved. 41 * 42 * This code is derived from software contributed to Berkeley by 43 * the Systems Programming Group of the University of Utah Computer 44 * Science Department, The Mach Operating System project at 45 * Carnegie-Mellon University and Ralph Campbell. 46 * 47 * Redistribution and use in source and binary forms, with or without 48 * modification, are permitted provided that the following conditions 49 * are met: 50 * 1. Redistributions of source code must retain the above copyright 51 * notice, this list of conditions and the following disclaimer. 52 * 2. Redistributions in binary form must reproduce the above copyright 53 * notice, this list of conditions and the following disclaimer in the 54 * documentation and/or other materials provided with the distribution. 55 * 3. Neither the name of the University nor the names of its contributors 56 * may be used to endorse or promote products derived from this software 57 * without specific prior written permission. 58 * 59 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 60 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 61 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 62 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 63 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 64 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 65 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 66 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 67 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 68 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 69 * SUCH DAMAGE. 70 * 71 * @(#)machdep.c 8.3 (Berkeley) 1/12/94 72 * from: Utah Hdr: machdep.c 1.63 91/04/24 73 */ 74 /* 75 * Copyright (c) 1988 University of Utah. 76 * 77 * This code is derived from software contributed to Berkeley by 78 * the Systems Programming Group of the University of Utah Computer 79 * Science Department, The Mach Operating System project at 80 * Carnegie-Mellon University and Ralph Campbell. 81 * 82 * Redistribution and use in source and binary forms, with or without 83 * modification, are permitted provided that the following conditions 84 * are met: 85 * 1. Redistributions of source code must retain the above copyright 86 * notice, this list of conditions and the following disclaimer. 87 * 2. Redistributions in binary form must reproduce the above copyright 88 * notice, this list of conditions and the following disclaimer in the 89 * documentation and/or other materials provided with the distribution. 90 * 3. All advertising materials mentioning features or use of this software 91 * must display the following acknowledgement: 92 * This product includes software developed by the University of 93 * California, Berkeley and its contributors. 94 * 4. Neither the name of the University nor the names of its contributors 95 * may be used to endorse or promote products derived from this software 96 * without specific prior written permission. 97 * 98 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 99 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 100 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 101 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 102 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 103 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 104 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 105 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 106 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 107 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 108 * SUCH DAMAGE. 109 * 110 * @(#)machdep.c 8.3 (Berkeley) 1/12/94 111 * from: Utah Hdr: machdep.c 1.63 91/04/24 112 */ 113 114 #include <sys/cdefs.h> 115 __KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.1 2009/08/06 00:50:26 matt Exp $"); 116 117 #include "opt_ddb.h" 118 #include "opt_execfmt.h" 119 #include "opt_modular.h" 120 121 #include <sys/param.h> 122 #include <sys/systm.h> 123 #include <sys/kernel.h> 124 #include <sys/buf.h> 125 #include <sys/reboot.h> 126 #include <sys/user.h> 127 #include <sys/mount.h> 128 #include <sys/kcore.h> 129 #include <sys/boot_flag.h> 130 #include <sys/termios.h> 131 #include <sys/ksyms.h> 132 #include <sys/device.h> 133 134 #include <uvm/uvm_extern.h> 135 136 #include <dev/cons.h> 137 138 #include "ksyms.h" 139 140 #if NKSYMS || defined(DDB) || defined(MODULAR) 141 #include <machine/db_machdep.h> 142 #include <ddb/db_extern.h> 143 #endif 144 145 #include <machine/cpu.h> 146 #include <machine/psl.h> 147 148 #include <mips/bonito/bonitoreg.h> 149 #include <evbmips/gdium/gdiumvar.h> 150 151 #include "com.h" 152 #if NCOM > 0 153 #include <dev/ic/comreg.h> 154 #include <dev/ic/comvar.h> 155 156 int comcnrate = 38400; /* XXX should be config option */ 157 #endif /* NCOM > 0 */ 158 159 struct gdium_config gdium_configuration = { 160 .gc_bonito = { 161 .bc_adbase = 11, /* magic */ 162 }, 163 }; 164 165 /* For sysctl_hw. */ 166 extern char cpu_model[]; 167 168 /* Our exported CPU info; we can have only one. */ 169 struct cpu_info cpu_info_store; 170 171 /* Maps for VM objects. */ 172 struct vm_map *mb_map = NULL; 173 struct vm_map *phys_map = NULL; 174 175 int physmem; /* Total physical memory */ 176 int netboot; /* Are we netbooting? */ 177 178 phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX]; 179 int mem_cluster_cnt; 180 181 void configure(void); 182 void mach_init(int, char **); 183 184 /* 185 * safepri is a safe priority for sleep to set for a spin-wait during 186 * autoconfiguration or after a panic. Used as an argument to splx(). 187 */ 188 int safepri = MIPS1_PSL_LOWIPL; 189 190 extern struct user *proc0paddr; 191 192 /* 193 * Do all the stuff that locore normally does before calling main(). 194 */ 195 void 196 mach_init(int argc, char **argv) 197 { 198 struct gdium_config *gc = &gdium_configuration; 199 void *kernend, *v; 200 u_long first, last; 201 char *cp; 202 int freqok, i, howto; 203 psize_t memsize; 204 #define FBADDR(y, x) (void*)(0xb4000000 + 2*x + 0x800*y) 205 206 extern char edata[], end[]; 207 208 memset(FBADDR(100,480), 0xff, 128); 209 /* 210 * Clear the BSS segment. 211 */ 212 kernend = (void *)mips_round_page(end); 213 memset(edata, 0, (char *)kernend - edata); 214 215 memset(FBADDR(104,480), 0xff, 128); 216 /* 217 * Set up the exception vectors and CPU-specific function 218 * vectors early on. We need the wbflush() vector set up 219 * before comcnattach() is called (or at least before the 220 * first printf() after that is called). 221 * Also clears the I+D caches. 222 */ 223 mips_vector_init(); 224 225 memset(FBADDR(108,480), 0xff, 128); 226 /* set the VM page size */ 227 uvm_setpagesize(); 228 229 memsize = 256*1024*1024; 230 physmem = btoc(memsize); 231 232 memset(FBADDR(112,480), 0xff, 128); 233 bonito_pci_init(&gc->gc_pc, &gc->gc_bonito); 234 memset(FBADDR(116,480), 0xff, 128); 235 gdium_bus_io_init(&gc->gc_iot, gc); 236 memset(FBADDR(120,480), 0xff, 128); 237 gdium_bus_mem_init(&gc->gc_memt, gc); 238 memset(FBADDR(124,480), 0xff, 128); 239 gdium_cnattach(gc); 240 memset(FBADDR(128,480), 0xff, 128); 241 gdium_dma_init(gc); 242 243 /* 244 * Calibrate the timer if YAMON failed to tell us. 245 */ 246 if (!freqok) { 247 #if 0 248 bus_space_handle_t sh; 249 bus_space_map(&gc->gc_iot, MALTA_RTCADR, 2, 0, &sh); 250 malta_cal_timer(&gc->gc_iot, sh); 251 bus_space_unmap(&gc->gc_iot, sh, 2); 252 #endif 253 } 254 255 #if NCOM > 0 256 /* 257 * Delay to allow firmware putchars to complete. 258 * FIFO depth * character time. 259 * character time = (1000000 / (defaultrate / 10)) 260 */ 261 delay(160000000 / comcnrate); 262 if (comcnattach(&gc->gc_iot, MALTA_UART0ADR, comcnrate, 263 COM_FREQ, COM_TYPE_NORMAL, 264 (TTYDEF_CFLAG & ~(CSIZE | PARENB)) | CS8) != 0) 265 panic("malta: unable to initialize serial console"); 266 #endif /* NCOM > 0 */ 267 268 mem_clusters[0].start = 0; 269 mem_clusters[0].size = ctob(physmem); 270 mem_cluster_cnt = 1; 271 272 strcpy(cpu_model, "Gdium Liberty 1000"); 273 274 /* 275 * XXX: check argv[0] - do something if "gdb"??? 276 */ 277 278 /* 279 * Look at arguments passed to us and compute boothowto. 280 */ 281 boothowto = RB_AUTOBOOT; 282 for (i = 1; i < argc; i++) { 283 for (cp = argv[i]; *cp; cp++) { 284 /* Ignore superfluous '-', if there is one */ 285 if (*cp == '-') 286 continue; 287 288 howto = 0; 289 BOOT_FLAG(*cp, howto); 290 if (! howto) 291 printf("bootflag '%c' not recognised\n", *cp); 292 else 293 boothowto |= howto; 294 } 295 } 296 297 /* 298 * Load the rest of the available pages into the VM system. 299 */ 300 first = round_page(MIPS_KSEG0_TO_PHYS(kernend)); 301 last = mem_clusters[0].start + mem_clusters[0].size; 302 uvm_page_physload(atop(first), atop(last), atop(first), atop(last), 303 VM_FREELIST_DEFAULT); 304 305 /* 306 * Initialize error message buffer (at end of core). 307 */ 308 mips_init_msgbuf(); 309 310 pmap_bootstrap(); 311 312 /* 313 * Allocate space for proc0's USPACE. 314 */ 315 v = (void *)uvm_pageboot_alloc(USPACE); 316 lwp0.l_addr = proc0paddr = (struct user *)v; 317 lwp0.l_md.md_regs = (struct frame *)((char *)v + USPACE) - 1; 318 proc0paddr->u_pcb.pcb_context[11] = 319 MIPS_INT_MASK | MIPS_SR_INT_IE; /* SR */ 320 321 /* 322 * Initialize debuggers, and break into them, if appropriate. 323 */ 324 #if defined(DDB) 325 if (boothowto & RB_KDB) 326 Debugger(); 327 #endif 328 } 329 330 void 331 consinit(void) 332 { 333 334 /* 335 * Everything related to console initialization is done 336 * in mach_init(). 337 */ 338 } 339 340 /* 341 * Allocate memory for variable-sized tables, 342 */ 343 void 344 cpu_startup(void) 345 { 346 vaddr_t minaddr, maxaddr; 347 char pbuf[9]; 348 349 /* 350 * Good {morning,afternoon,evening,night}. 351 */ 352 printf("%s%s", copyright, version); 353 format_bytes(pbuf, sizeof(pbuf), ctob(physmem)); 354 printf("total memory = %s\n", pbuf); 355 356 /* 357 * Virtual memory is bootstrapped -- notify the bus spaces 358 * that memory allocation is now safe. 359 */ 360 gdium_configuration.gc_mallocsafe = 1; 361 362 minaddr = 0; 363 /* 364 * Allocate a submap for physio. 365 */ 366 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 367 VM_PHYS_SIZE, 0, FALSE, NULL); 368 369 /* 370 * (No need to allocate an mbuf cluster submap. Mbuf clusters 371 * are allocated via the pool allocator, and we use KSEG to 372 * map those pages.) 373 */ 374 375 format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free)); 376 printf("avail memory = %s\n", pbuf); 377 } 378 379 int waittime = -1; 380 381 void 382 cpu_reboot(int howto, char *bootstr) 383 { 384 385 /* Take a snapshot before clobbering any registers. */ 386 if (curproc) 387 savectx((struct user *)curpcb); 388 389 if (cold) { 390 howto |= RB_HALT; 391 goto haltsys; 392 } 393 394 /* If "always halt" was specified as a boot flag, obey. */ 395 if (boothowto & RB_HALT) 396 howto |= RB_HALT; 397 398 boothowto = howto; 399 if ((howto & RB_NOSYNC) == 0 && (waittime < 0)) { 400 waittime = 0; 401 vfs_shutdown(); 402 403 /* 404 * If we've been adjusting the clock, the todr 405 * will be out of synch; adjust it now. 406 */ 407 resettodr(); 408 } 409 410 splhigh(); 411 412 if (howto & RB_DUMP) 413 dumpsys(); 414 415 haltsys: 416 doshutdownhooks(); 417 418 pmf_system_shutdown(boothowto); 419 420 if ((howto & RB_POWERDOWN) == RB_POWERDOWN) { 421 /* 422 * Turning on GPIO1 as output will cause a powerdown. 423 */ 424 REGVAL(BONITO_GPIODATA) |= 2; 425 REGVAL(BONITO_GPIOIE) &= ~2; 426 } 427 428 if (howto & RB_HALT) { 429 printf("\n"); 430 printf("The operating system has halted.\n"); 431 printf("Please press any key to reboot.\n\n"); 432 cnpollc(1); /* For proper keyboard command handling */ 433 cngetc(); 434 cnpollc(0); 435 } 436 437 printf("%s\n\n", ((howto & RB_HALT) != 0) ? "halted." : "rebooting..."); 438 439 /* 440 * Turning off GPIO2 as output will cause a reset. 441 */ 442 REGVAL(BONITO_GPIODATA) &= ~4; 443 REGVAL(BONITO_GPIOIE) &= ~4; 444 445 __asm__ __volatile__ ( 446 "\t.long 0x3c02bfc0\n" 447 "\t.long 0x00400008\n" 448 ::: "v0"); 449 } 450
Indexes created Mon Sep 29 21:09:56 GMT 2025