machdep.c revision 1.1.2.1
1 /* $NetBSD: machdep.c,v 1.1.2.1 2009/09/13 03:27:38 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 1.1.2.1 2009/09/13 03:27:38 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_base = rmixlfw_info.io_base; 268 rmixl_bus_mem_init(&rcp->rc_memt, rcp); 269 #ifdef NOTYET 270 rmixl_bus_io_init(&rcp->rc_iot, rcp); 271 rmixl_dma_init(rcp); 272 #endif 273 #if NPCI > 0 274 rmixl_pci_init(&rcp->rc_pc, &rcp->rc_gt); 275 #endif 276 277 #if NCOM > 0 278 rmixl_com_cnattach(comcnaddr, comcnspeed, comcnfreq, 279 COM_TYPE_NORMAL, comcnmode); 280 #endif 281 282 printf("\nNetBSD/rmixl\n"); 283 printf("memsize = %#lx\n", memsize); 284 285 /* 286 * Obtain the cpu frequency 287 * Compute the number of ticks for hz. 288 * Compute the delay divisor. 289 * Double the Hz if this CPU runs at twice the 290 * external/cp0-count frequency 291 */ 292 curcpu()->ci_cpu_freq = rmixlfw_info.cpu_frequency; 293 curcpu()->ci_cycles_per_hz = (curcpu()->ci_cpu_freq + hz / 2) / hz; 294 curcpu()->ci_divisor_delay = 295 ((curcpu()->ci_cpu_freq + 500000) / 1000000); 296 if (mips_cpu_flags & CPU_MIPS_DOUBLE_COUNT) 297 curcpu()->ci_cpu_freq *= 2; 298 299 /* 300 * Look at arguments passed to us and compute boothowto. 301 * - rmixl firmware gives us a 32 bit argv[i], so adapt 302 * by forcing sign extension in cast to (char *) 303 */ 304 boothowto = RB_AUTOBOOT; 305 for (int i = 1; i < argc; i++) { 306 for (char *cp = (char *)(uint64_t)argv[i]; *cp; cp++) { 307 int howto; 308 /* Ignore superfluous '-', if there is one */ 309 if (*cp == '-') 310 continue; 311 312 howto = 0; 313 BOOT_FLAG(*cp, howto); 314 if (! howto) 315 printf("bootflag '%c' not recognised\n", *cp); 316 else 317 boothowto |= howto; 318 } 319 } 320 printf("boothowto %#x\n", boothowto); 321 322 /* 323 * Load the rest of the available pages into the VM system. 324 */ 325 first = round_page(MIPS_KSEG0_TO_PHYS(kernend)); 326 last = mem_clusters[0].start + mem_clusters[0].size; 327 uvm_page_physload(atop(first), atop(last), atop(first), atop(last), 328 VM_FREELIST_DEFAULT); 329 for (int i = 1; i < mem_cluster_cnt; i++) { 330 first = round_page(mem_clusters[i].start); 331 last = mem_clusters[i].start + mem_clusters[i].size; 332 uvm_page_physload(atop(first), atop(last), atop(first), atop(last), 333 VM_FREELIST_DEFAULT); 334 } 335 336 /* 337 * Initialize error message buffer (at end of core). 338 */ 339 mips_init_msgbuf(); 340 341 pmap_bootstrap(); 342 343 /* 344 * Allocate space for proc0's USPACE. 345 */ 346 v = (void *)uvm_pageboot_alloc(USPACE); 347 lwp0.l_addr = proc0paddr = (struct user *)v; 348 lwp0.l_md.md_regs = (struct frame *)((char *)v + USPACE) - 1; 349 #ifdef _LP64 350 lwp0.l_md.md_regs->f_regs[_R_SR] = MIPS_SR_KX; 351 #endif 352 proc0paddr->u_pcb.pcb_context.val[_L_SR] = 353 #ifdef _LP64 354 MIPS_SR_KX | 355 #endif 356 MIPS_INT_MASK | MIPS_SR_INT_IE; /* SR */ 357 358 359 /* 360 * Initialize debuggers, and break into them, if appropriate. 361 */ 362 #if NKSYMS || defined(DDB) || defined(LKM) 363 ksyms_init(0, 0, 0); 364 #endif 365 366 #if defined(DDB) 367 if (boothowto & RB_KDB) 368 Debugger(); 369 #endif 370 371 } 372 373 static u_long 374 rmixlfw_init(void *infop) 375 { 376 uint64_t tmp; 377 uint64_t sz; 378 uint64_t sum; 379 #ifdef MEMSIZE 380 u_long memsize = MEMSIZE; 381 #endif 382 383 strcpy(cpu_model, "RMI XLS616ATX VIIA"); /* XXX */ 384 385 tmp = (int64_t)infop; 386 tmp |= 0xffffffffULL << 32; 387 infop = (void *)tmp; 388 rmixlfw_info = *(rmixlfw_info_t *)infop; 389 390 for (int i=0; i < RMICLFW_PSB_VERSIONS_LEN; i++) { 391 if (rmiclfw_psb_versions[i] == rmixlfw_info.psb_version) 392 goto found; 393 } 394 395 rmixl_putchar_init(rmixlfw_info.io_base); 396 rmixl_puts("\r\nWARNING: untested psb_version: "); 397 rmixl_puthex64(rmixlfw_info.psb_version); 398 rmixl_puts("\r\n"); 399 found: 400 401 rmixlfw_phys_mmap = *(rmixlfw_mmap_t *)rmixlfw_info.psb_physaddr_map; 402 rmixlfw_avail_mmap = *(rmixlfw_mmap_t *)rmixlfw_info.avail_mem_map; 403 404 sum = 0; 405 mem_cluster_cnt = 0; 406 for (uint32_t i=0; i < rmixlfw_avail_mmap.nmmaps; i++) { 407 if (rmixlfw_avail_mmap.entry[i].type != RMIXLFW_MMAP_TYPE_RAM) 408 continue; 409 mem_clusters[i].start = rmixlfw_avail_mmap.entry[i].start; 410 sz = rmixlfw_avail_mmap.entry[i].size; 411 sum += sz; 412 mem_clusters[i].size = sz; 413 mem_cluster_cnt++; 414 #ifdef DEBUG 415 rmixl_puthex32(i); 416 rmixl_puts(": "); 417 rmixl_puthex64(mem_clusters[i].start); 418 rmixl_puts(": "); 419 rmixl_puthex64(sz); 420 rmixl_puts(": "); 421 rmixl_puthex64(sum); 422 rmixl_puts("\r\n"); 423 #endif 424 #ifdef MEMSIZE 425 /* 426 * configurably limit memsize 427 */ 428 if (sum == memsize) 429 break; 430 if (sum > memsize) { 431 tmp = sum - memsize; 432 sz -= tmp; 433 sum -= tmp; 434 mem_clusters[i].size = sz; 435 break; 436 } 437 #endif 438 } 439 return sum; 440 } 441 442 void 443 consinit(void) 444 { 445 446 /* 447 * Everything related to console initialization is done 448 * in mach_init(). 449 */ 450 } 451 452 /* 453 * Allocate memory for variable-sized tables, 454 */ 455 void 456 cpu_startup() 457 { 458 vaddr_t minaddr, maxaddr; 459 char pbuf[9]; 460 461 /* 462 * Good {morning,afternoon,evening,night}. 463 */ 464 printf("%s%s", copyright, version); 465 format_bytes(pbuf, sizeof(pbuf), ctob(physmem)); 466 printf("total memory = %s\n", pbuf); 467 468 /* 469 * Virtual memory is bootstrapped -- notify the bus spaces 470 * that memory allocation is now safe. 471 */ 472 rmixl_configuration.rc_mallocsafe = 1; 473 474 minaddr = 0; 475 /* 476 * Allocate a submap for physio. 477 */ 478 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 479 VM_PHYS_SIZE, 0, FALSE, NULL); 480 481 /* 482 * (No need to allocate an mbuf cluster submap. Mbuf clusters 483 * are allocated via the pool allocator, and we use KSEG to 484 * map those pages.) 485 */ 486 487 format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free)); 488 printf("avail memory = %s\n", pbuf); 489 } 490 491 int waittime = -1; 492 493 void 494 cpu_reboot(howto, bootstr) 495 int howto; 496 char *bootstr; 497 { 498 499 /* Take a snapshot before clobbering any registers. */ 500 if (curproc) 501 savectx((struct user *)curpcb); 502 503 if (cold) { 504 howto |= RB_HALT; 505 goto haltsys; 506 } 507 508 /* If "always halt" was specified as a boot flag, obey. */ 509 if (boothowto & RB_HALT) 510 howto |= RB_HALT; 511 512 boothowto = howto; 513 if ((howto & RB_NOSYNC) == 0 && (waittime < 0)) { 514 waittime = 0; 515 vfs_shutdown(); 516 517 /* 518 * If we've been adjusting the clock, the todr 519 * will be out of synch; adjust it now. 520 */ 521 resettodr(); 522 } 523 524 splhigh(); 525 526 if (howto & RB_DUMP) 527 dumpsys(); 528 529 haltsys: 530 doshutdownhooks(); 531 532 if (howto & RB_HALT) { 533 printf("\n"); 534 printf("The operating system has halted.\n"); 535 printf("Please press any key to reboot.\n\n"); 536 cnpollc(1); /* For proper keyboard command handling */ 537 cngetc(); 538 cnpollc(0); 539 } 540 541 printf("rebooting...\n\n"); 542 543 rmixl_exit(0); 544 } 545 546 /* 547 * goodbye world 548 */ 549 #define GPIO_CPU_RST 0xa0 /* XXX TMP */ 550 void __attribute__((__noreturn__)) 551 rmixl_exit(int howto) 552 { 553 /* use firmware callbak to reboot */ 554 void (*reset)(void) = (void *)rmixlfw_info.warm_reset; 555 (*reset)(); 556 printf("warm reset callback failed, spinning...\n"); 557 for (;;); 558 } 559
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