machdep.c revision 1.2
1 /* $NetBSD: machdep.c,v 1.2 2009/08/06 16:37:01 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 1.2 2009/08/06 16:37:01 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 **, char **, void *); 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, char **evnp, void *syms) 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; 204 205 extern char edata[], end[]; 206 207 /* 208 * Clear the BSS segment. 209 */ 210 kernend = (void *)mips_round_page(end); 211 memset(edata, 0, (char *)kernend - edata); 212 213 /* 214 * Set up the exception vectors and CPU-specific function 215 * vectors early on. We need the wbflush() vector set up 216 * before comcnattach() is called (or at least before the 217 * first printf() after that is called). 218 * Also clears the I+D caches. 219 */ 220 mips_vector_init(); 221 222 /* set the VM page size */ 223 uvm_setpagesize(); 224 225 memsize = 256*1024*1024; 226 physmem = btoc(memsize); 227 228 bonito_pci_init(&gc->gc_pc, &gc->gc_bonito); 229 gdium_bus_io_init(&gc->gc_iot, gc); 230 gdium_bus_mem_init(&gc->gc_memt, gc); 231 gdium_dma_init(gc); 232 gdium_cnattach(gc); 233 234 /* 235 * Calibrate the timer if YAMON failed to tell us. 236 */ 237 if (!freqok) { 238 #if 0 239 bus_space_handle_t sh; 240 bus_space_map(&gc->gc_iot, MALTA_RTCADR, 2, 0, &sh); 241 malta_cal_timer(&gc->gc_iot, sh); 242 bus_space_unmap(&gc->gc_iot, sh, 2); 243 #endif 244 } 245 246 #if NCOM > 0 247 /* 248 * Delay to allow firmware putchars to complete. 249 * FIFO depth * character time. 250 * character time = (1000000 / (defaultrate / 10)) 251 */ 252 delay(160000000 / comcnrate); 253 if (comcnattach(&gc->gc_iot, MALTA_UART0ADR, comcnrate, 254 COM_FREQ, COM_TYPE_NORMAL, 255 (TTYDEF_CFLAG & ~(CSIZE | PARENB)) | CS8) != 0) 256 panic("malta: unable to initialize serial console"); 257 #endif /* NCOM > 0 */ 258 259 mem_clusters[0].start = 0; 260 mem_clusters[0].size = ctob(physmem); 261 mem_cluster_cnt = 1; 262 263 strcpy(cpu_model, "Gdium Liberty 1000"); 264 265 /* 266 * XXX: check argv[0] - do something if "gdb"??? 267 */ 268 269 /* 270 * Look at arguments passed to us and compute boothowto. 271 */ 272 boothowto = RB_AUTOBOOT; 273 for (i = 1; i < argc; i++) { 274 for (cp = argv[i]; *cp; cp++) { 275 /* Ignore superfluous '-', if there is one */ 276 if (*cp == '-') 277 continue; 278 279 howto = 0; 280 BOOT_FLAG(*cp, howto); 281 if (! howto) 282 printf("bootflag '%c' not recognised\n", *cp); 283 else 284 boothowto |= howto; 285 } 286 } 287 288 /* 289 * Load the rest of the available pages into the VM system. 290 */ 291 first = round_page(MIPS_KSEG0_TO_PHYS(kernend)); 292 last = mem_clusters[0].start + mem_clusters[0].size; 293 uvm_page_physload(atop(first), atop(last), atop(first), atop(last), 294 VM_FREELIST_DEFAULT); 295 296 /* 297 * Initialize error message buffer (at end of core). 298 */ 299 mips_init_msgbuf(); 300 301 pmap_bootstrap(); 302 303 /* 304 * Allocate space for proc0's USPACE. 305 */ 306 v = (void *)uvm_pageboot_alloc(USPACE); 307 lwp0.l_addr = proc0paddr = (struct user *)v; 308 lwp0.l_md.md_regs = (struct frame *)((char *)v + USPACE) - 1; 309 proc0paddr->u_pcb.pcb_context[11] = 310 MIPS_INT_MASK | MIPS_SR_INT_IE; /* SR */ 311 312 /* 313 * Initialize debuggers, and break into them, if appropriate. 314 */ 315 #if defined(DDB) 316 if (boothowto & RB_KDB) 317 Debugger(); 318 #endif 319 } 320 321 void 322 consinit(void) 323 { 324 325 /* 326 * Everything related to console initialization is done 327 * in mach_init(). 328 */ 329 } 330 331 /* 332 * Allocate memory for variable-sized tables, 333 */ 334 void 335 cpu_startup(void) 336 { 337 vaddr_t minaddr, maxaddr; 338 char pbuf[9]; 339 340 /* 341 * Good {morning,afternoon,evening,night}. 342 */ 343 printf("%s%s", copyright, version); 344 format_bytes(pbuf, sizeof(pbuf), ctob(physmem)); 345 printf("total memory = %s\n", pbuf); 346 347 /* 348 * Virtual memory is bootstrapped -- notify the bus spaces 349 * that memory allocation is now safe. 350 */ 351 gdium_configuration.gc_mallocsafe = 1; 352 353 minaddr = 0; 354 /* 355 * Allocate a submap for physio. 356 */ 357 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 358 VM_PHYS_SIZE, 0, FALSE, NULL); 359 360 /* 361 * (No need to allocate an mbuf cluster submap. Mbuf clusters 362 * are allocated via the pool allocator, and we use KSEG to 363 * map those pages.) 364 */ 365 366 format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free)); 367 printf("avail memory = %s\n", pbuf); 368 } 369 370 int waittime = -1; 371 372 void 373 cpu_reboot(int howto, char *bootstr) 374 { 375 376 /* Take a snapshot before clobbering any registers. */ 377 if (curproc) 378 savectx((struct user *)curpcb); 379 380 if (cold) { 381 howto |= RB_HALT; 382 goto haltsys; 383 } 384 385 /* If "always halt" was specified as a boot flag, obey. */ 386 if (boothowto & RB_HALT) 387 howto |= RB_HALT; 388 389 boothowto = howto; 390 if ((howto & RB_NOSYNC) == 0 && (waittime < 0)) { 391 waittime = 0; 392 vfs_shutdown(); 393 394 /* 395 * If we've been adjusting the clock, the todr 396 * will be out of synch; adjust it now. 397 */ 398 resettodr(); 399 } 400 401 splhigh(); 402 403 if (howto & RB_DUMP) 404 dumpsys(); 405 406 haltsys: 407 doshutdownhooks(); 408 409 pmf_system_shutdown(boothowto); 410 411 if ((howto & RB_POWERDOWN) == RB_POWERDOWN) { 412 /* 413 * Turning on GPIO1 as output will cause a powerdown. 414 */ 415 REGVAL(BONITO_GPIODATA) |= 2; 416 REGVAL(BONITO_GPIOIE) &= ~2; 417 } 418 419 if (howto & RB_HALT) { 420 printf("\n"); 421 printf("The operating system has halted.\n"); 422 printf("Please press any key to reboot.\n\n"); 423 cnpollc(1); /* For proper keyboard command handling */ 424 cngetc(); 425 cnpollc(0); 426 } 427 428 printf("%s\n\n", ((howto & RB_HALT) != 0) ? "halted." : "rebooting..."); 429 430 /* 431 * Turning off GPIO2 as output will cause a reset. 432 */ 433 REGVAL(BONITO_GPIODATA) &= ~4; 434 REGVAL(BONITO_GPIOIE) &= ~4; 435 436 __asm__ __volatile__ ( 437 "\t.long 0x3c02bfc0\n" 438 "\t.long 0x00400008\n" 439 ::: "v0"); 440 } 441
Indexes created Tue Sep 30 07:10:03 GMT 2025