machdep.c revision 1.1.2.3
1 /* $NetBSD: machdep.c,v 1.1.2.3 2009/09/15 02:46:43 cliff 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 1.1.2.3 2009/09/15 02:46:43 cliff Exp $"); 116 117 #include "opt_ddb.h" 118 #include "opt_com.h" 119 #include "opt_execfmt.h" 120 #include "opt_memsize.h" 121 122 #include <sys/param.h> 123 #include <sys/systm.h> 124 #include <sys/kernel.h> 125 #include <sys/buf.h> 126 #include <sys/reboot.h> 127 #include <sys/user.h> 128 #include <sys/mount.h> 129 #include <sys/kcore.h> 130 #include <sys/boot_flag.h> 131 #include <sys/termios.h> 132 #include <sys/ksyms.h> 133 #include <sys/bus.h> 134 #include <sys/device.h> 135 136 #include <uvm/uvm_extern.h> 137 138 #include <dev/cons.h> 139 140 #include "ksyms.h" 141 142 #if NKSYMS || defined(DDB) || defined(LKM) 143 #include <machine/db_machdep.h> 144 #include <ddb/db_extern.h> 145 #endif 146 147 #include <machine/cpu.h> 148 #include <machine/psl.h> 149 150 #include "com.h" 151 #if NCOM == 0 152 #error no serial console 153 #endif 154 155 #include <dev/ic/comreg.h> 156 #include <dev/ic/comvar.h> 157 158 #include <mips/rmi/rmixl_comvar.h> 159 #include <mips/rmi/rmixlvar.h> 160 #include <mips/rmi/rmixl_firmware.h> 161 #include <mips/rmi/rmixlreg.h> 162 163 #ifndef CONSPEED 164 # define CONSPEED 38400 165 #endif 166 #ifndef CONMODE 167 # define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | PARENB)) | CS8) 168 #endif 169 #ifndef CONSADDR 170 # define CONSADDR RMIXL_IO_DEV_UART_1 171 #endif 172 173 int comcnfreq = -1; 174 uint comcnspeed = CONSPEED; 175 uint comcnmode = CONMODE; 176 bus_addr_t comcnaddr = (bus_addr_t)CONSADDR; 177 178 struct rmixl_config rmixl_configuration; 179 180 181 /* 182 * array of tested firmware versions 183 * if you fiund new ones and they work 184 * please add them 185 */ 186 static uint64_t rmiclfw_psb_versions[] = { 187 0x4958d4fb00000056, 188 }; 189 #define RMICLFW_PSB_VERSIONS_LEN \ 190 (sizeof(rmiclfw_psb_versions)/sizeof(rmiclfw_psb_versions[0])) 191 192 /* 193 * kernel copies of firmware info 194 */ 195 static rmixlfw_info_t rmixlfw_info; 196 static rmixlfw_mmap_t rmixlfw_phys_mmap; 197 static rmixlfw_mmap_t rmixlfw_avail_mmap; 198 199 200 /* For sysctl_hw. */ 201 extern char cpu_model[]; 202 203 /* Our exported CPU info; we can have only one. */ 204 struct cpu_info cpu_info_store; 205 206 /* Maps for VM objects. */ 207 struct vm_map *mb_map = NULL; 208 struct vm_map *phys_map = NULL; 209 210 int physmem; /* Total physical memory */ 211 212 int netboot; /* Are we netbooting? */ 213 214 215 phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX]; 216 int mem_cluster_cnt; 217 218 void configure(void); 219 void mach_init(int, int32_t *, void *, void *); 220 static u_long rmixlfw_init(void *); 221 static void __attribute__((__noreturn__)) rmixl_exit(int); 222 223 224 /* 225 * safepri is a safe priority for sleep to set for a spin-wait during 226 * autoconfiguration or after a panic. Used as an argument to splx(). 227 */ 228 int safepri = MIPS1_PSL_LOWIPL; 229 230 extern struct user *proc0paddr; 231 232 /* 233 * Do all the stuff that locore normally does before calling main(). 234 */ 235 void 236 mach_init(int argc, int32_t *argv, void *envp, void *infop) 237 { 238 struct rmixl_config *rcp; 239 void *kernend, *v; 240 size_t first, last; 241 u_long memsize; 242 extern char edata[], end[]; 243 244 /* 245 * Clear the BSS segment. 246 */ 247 kernend = (void *)mips_round_page(end); 248 memset(edata, 0, (char *)kernend - edata); 249 250 /* 251 * Set up the exception vectors and CPU-specific function 252 * vectors early on. We need the wbflush() vector set up 253 * before comcnattach() is called (or at least before the 254 * first printf() after that is called). 255 * Also clears the I+D caches. 256 */ 257 mips_vector_init(); 258 259 memsize = rmixlfw_init(infop); 260 261 /* set the VM page size */ 262 uvm_setpagesize(); 263 264 physmem = btoc(memsize); 265 266 rcp = &rmixl_configuration; 267 rcp->rc_io_pbase = MIPS_KSEG1_TO_PHYS(rmixlfw_info.io_base); 268 rmixl_eb_bus_mem_init(&rcp->rc_eb_memt, rcp); /* need for console */ 269 rmixl_el_bus_mem_init(&rcp->rc_el_memt, rcp); /* XXX defer ? */ 270 271 #if NCOM > 0 272 rmixl_com_cnattach(comcnaddr, comcnspeed, comcnfreq, 273 COM_TYPE_NORMAL, comcnmode); 274 #endif 275 276 printf("\nNetBSD/rmixl\n"); 277 printf("memsize = %#lx\n", memsize); 278 279 /* 280 * Obtain the cpu frequency 281 * Compute the number of ticks for hz. 282 * Compute the delay divisor. 283 * Double the Hz if this CPU runs at twice the 284 * external/cp0-count frequency 285 */ 286 curcpu()->ci_cpu_freq = rmixlfw_info.cpu_frequency; 287 curcpu()->ci_cycles_per_hz = (curcpu()->ci_cpu_freq + hz / 2) / hz; 288 curcpu()->ci_divisor_delay = 289 ((curcpu()->ci_cpu_freq + 500000) / 1000000); 290 if (mips_cpu_flags & CPU_MIPS_DOUBLE_COUNT) 291 curcpu()->ci_cpu_freq *= 2; 292 293 /* 294 * Look at arguments passed to us and compute boothowto. 295 * - rmixl firmware gives us a 32 bit argv[i], so adapt 296 * by forcing sign extension in cast to (char *) 297 */ 298 boothowto = RB_AUTOBOOT; 299 for (int i = 1; i < argc; i++) { 300 for (char *cp = (char *)(uint64_t)argv[i]; *cp; cp++) { 301 int howto; 302 /* Ignore superfluous '-', if there is one */ 303 if (*cp == '-') 304 continue; 305 306 howto = 0; 307 BOOT_FLAG(*cp, howto); 308 if (! howto) 309 printf("bootflag '%c' not recognised\n", *cp); 310 else 311 boothowto |= howto; 312 } 313 } 314 printf("boothowto %#x\n", boothowto); 315 316 /* 317 * Load the rest of the available pages into the VM system. 318 */ 319 first = round_page(MIPS_KSEG0_TO_PHYS(kernend)); 320 last = mem_clusters[0].start + mem_clusters[0].size; 321 uvm_page_physload(atop(first), atop(last), atop(first), atop(last), 322 VM_FREELIST_DEFAULT); 323 for (int i = 1; i < mem_cluster_cnt; i++) { 324 first = round_page(mem_clusters[i].start); 325 last = mem_clusters[i].start + mem_clusters[i].size; 326 uvm_page_physload(atop(first), atop(last), atop(first), atop(last), 327 VM_FREELIST_DEFAULT); 328 } 329 330 /* 331 * Initialize error message buffer (at end of core). 332 */ 333 mips_init_msgbuf(); 334 335 pmap_bootstrap(); 336 337 /* 338 * Allocate space for proc0's USPACE. 339 */ 340 v = (void *)uvm_pageboot_alloc(USPACE); 341 lwp0.l_addr = proc0paddr = (struct user *)v; 342 lwp0.l_md.md_regs = (struct frame *)((char *)v + USPACE) - 1; 343 #ifdef _LP64 344 lwp0.l_md.md_regs->f_regs[_R_SR] = MIPS_SR_KX; 345 #endif 346 proc0paddr->u_pcb.pcb_context.val[_L_SR] = 347 #ifdef _LP64 348 MIPS_SR_KX | 349 #endif 350 MIPS_INT_MASK | MIPS_SR_INT_IE; /* SR */ 351 352 353 /* 354 * Initialize debuggers, and break into them, if appropriate. 355 */ 356 #if NKSYMS || defined(DDB) || defined(LKM) 357 ksyms_init(0, 0, 0); 358 #endif 359 360 #if defined(DDB) 361 if (boothowto & RB_KDB) 362 Debugger(); 363 #endif 364 365 } 366 367 static u_long 368 rmixlfw_init(void *infop) 369 { 370 uint64_t tmp; 371 uint64_t sz; 372 uint64_t sum; 373 #ifdef MEMSIZE 374 u_long memsize = MEMSIZE; 375 #endif 376 377 strcpy(cpu_model, "RMI XLS616ATX VIIA"); /* XXX */ 378 379 tmp = (int64_t)infop; 380 tmp |= 0xffffffffULL << 32; 381 infop = (void *)tmp; 382 rmixlfw_info = *(rmixlfw_info_t *)infop; 383 384 for (int i=0; i < RMICLFW_PSB_VERSIONS_LEN; i++) { 385 if (rmiclfw_psb_versions[i] == rmixlfw_info.psb_version) 386 goto found; 387 } 388 389 rmixl_putchar_init(MIPS_KSEG1_TO_PHYS(rmixlfw_info.io_base)); 390 rmixl_puts("\r\nWARNING: untested psb_version: "); 391 rmixl_puthex64(rmixlfw_info.psb_version); 392 rmixl_puts("\r\n"); 393 found: 394 395 rmixlfw_phys_mmap = *(rmixlfw_mmap_t *)rmixlfw_info.psb_physaddr_map; 396 rmixlfw_avail_mmap = *(rmixlfw_mmap_t *)rmixlfw_info.avail_mem_map; 397 398 sum = 0; 399 mem_cluster_cnt = 0; 400 for (uint32_t i=0; i < rmixlfw_avail_mmap.nmmaps; i++) { 401 if (rmixlfw_avail_mmap.entry[i].type != RMIXLFW_MMAP_TYPE_RAM) 402 continue; 403 mem_clusters[i].start = rmixlfw_avail_mmap.entry[i].start; 404 sz = rmixlfw_avail_mmap.entry[i].size; 405 sum += sz; 406 mem_clusters[i].size = sz; 407 mem_cluster_cnt++; 408 #ifdef DEBUG 409 rmixl_puthex32(i); 410 rmixl_puts(": "); 411 rmixl_puthex64(mem_clusters[i].start); 412 rmixl_puts(": "); 413 rmixl_puthex64(sz); 414 rmixl_puts(": "); 415 rmixl_puthex64(sum); 416 rmixl_puts("\r\n"); 417 #endif 418 #ifdef MEMSIZE 419 /* 420 * configurably limit memsize 421 */ 422 if (sum == memsize) 423 break; 424 if (sum > memsize) { 425 tmp = sum - memsize; 426 sz -= tmp; 427 sum -= tmp; 428 mem_clusters[i].size = sz; 429 break; 430 } 431 #endif 432 } 433 return sum; 434 } 435 436 void 437 consinit(void) 438 { 439 440 /* 441 * Everything related to console initialization is done 442 * in mach_init(). 443 */ 444 } 445 446 /* 447 * Allocate memory for variable-sized tables, 448 */ 449 void 450 cpu_startup() 451 { 452 vaddr_t minaddr, maxaddr; 453 char pbuf[9]; 454 455 /* 456 * Good {morning,afternoon,evening,night}. 457 */ 458 printf("%s%s", copyright, version); 459 format_bytes(pbuf, sizeof(pbuf), ctob(physmem)); 460 printf("total memory = %s\n", pbuf); 461 462 /* 463 * Virtual memory is bootstrapped -- notify the bus spaces 464 * that memory allocation is now safe. 465 */ 466 rmixl_configuration.rc_mallocsafe = 1; 467 468 minaddr = 0; 469 /* 470 * Allocate a submap for physio. 471 */ 472 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 473 VM_PHYS_SIZE, 0, FALSE, NULL); 474 475 /* 476 * (No need to allocate an mbuf cluster submap. Mbuf clusters 477 * are allocated via the pool allocator, and we use KSEG to 478 * map those pages.) 479 */ 480 481 format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free)); 482 printf("avail memory = %s\n", pbuf); 483 } 484 485 int waittime = -1; 486 487 void 488 cpu_reboot(howto, bootstr) 489 int howto; 490 char *bootstr; 491 { 492 493 /* Take a snapshot before clobbering any registers. */ 494 if (curproc) 495 savectx((struct user *)curpcb); 496 497 if (cold) { 498 howto |= RB_HALT; 499 goto haltsys; 500 } 501 502 /* If "always halt" was specified as a boot flag, obey. */ 503 if (boothowto & RB_HALT) 504 howto |= RB_HALT; 505 506 boothowto = howto; 507 if ((howto & RB_NOSYNC) == 0 && (waittime < 0)) { 508 waittime = 0; 509 vfs_shutdown(); 510 511 /* 512 * If we've been adjusting the clock, the todr 513 * will be out of synch; adjust it now. 514 */ 515 resettodr(); 516 } 517 518 splhigh(); 519 520 if (howto & RB_DUMP) 521 dumpsys(); 522 523 haltsys: 524 doshutdownhooks(); 525 526 if (howto & RB_HALT) { 527 printf("\n"); 528 printf("The operating system has halted.\n"); 529 printf("Please press any key to reboot.\n\n"); 530 cnpollc(1); /* For proper keyboard command handling */ 531 cngetc(); 532 cnpollc(0); 533 } 534 535 printf("rebooting...\n\n"); 536 537 rmixl_exit(0); 538 } 539 540 /* 541 * goodbye world 542 */ 543 #define GPIO_CPU_RST 0xa0 /* XXX TMP */ 544 void __attribute__((__noreturn__)) 545 rmixl_exit(int howto) 546 { 547 /* use firmware callbak to reboot */ 548 void (*reset)(void) = (void *)rmixlfw_info.warm_reset; 549 (*reset)(); 550 printf("warm reset callback failed, spinning...\n"); 551 for (;;); 552 } 553
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