1 /* $NetBSD: at91bus.c,v 1.17 2013/08/18 15:58:19 matt Exp $ */ 2 3 /* 4 * Copyright (c) 2007 Embedtronics Oy 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __KERNEL_RCSID(0, "$NetBSD: at91bus.c,v 1.17 2013/08/18 15:58:19 matt Exp $"); 31 32 #include "opt_ddb.h" 33 #include "opt_kgdb.h" 34 #include "opt_pmap_debug.h" 35 #include "locators.h" 36 37 /* Define various stack sizes in pages */ 38 #define IRQ_STACK_SIZE 8 39 #define ABT_STACK_SIZE 8 40 #ifdef IPKDB 41 #define UND_STACK_SIZE 16 42 #else 43 #define UND_STACK_SIZE 8 44 #endif 45 46 #include <sys/param.h> 47 #include <sys/device.h> 48 #include <sys/systm.h> 49 #include <sys/kernel.h> 50 #include <sys/exec.h> 51 #include <sys/proc.h> 52 #include <sys/msgbuf.h> 53 #include <sys/reboot.h> 54 #include <sys/termios.h> 55 #include <sys/ksyms.h> 56 #include <sys/bus.h> 57 #include <sys/cpu.h> 58 #include <sys/termios.h> 59 60 #include <uvm/uvm_extern.h> 61 62 #include <dev/cons.h> 63 64 #include <machine/db_machdep.h> 65 #include <ddb/db_sym.h> 66 #include <ddb/db_extern.h> 67 68 #include <arm/locore.h> 69 #include <arm/undefined.h> 70 71 #include <arm/arm32/machdep.h> 72 73 #include <arm/at91/at91var.h> 74 #include <arm/at91/at91busvar.h> 75 #include <arm/at91/at91dbgureg.h> 76 77 #include <machine/bootconfig.h> 78 79 /* console stuff: */ 80 #ifndef CONSPEED 81 #define CONSPEED B115200 82 #endif 83 84 #ifndef CONMODE 85 #define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */ 86 #endif 87 88 int cnspeed = CONSPEED; 89 int cnmode = CONMODE; 90 91 92 /* kernel mapping: */ 93 #define KERNEL_BASE_PHYS 0x20200000 94 #define KERNEL_TEXT_BASE (KERNEL_BASE + 0x00200000) 95 #define KERNEL_VM_BASE (KERNEL_BASE + 0x01000000) 96 #define KERNEL_VM_SIZE 0x0C000000 97 98 99 100 /* boot configuration: */ 101 vm_offset_t physical_start; 102 vm_offset_t physical_freestart; 103 vm_offset_t physical_freeend; 104 vm_offset_t physical_freeend_low; 105 vm_offset_t physical_end; 106 u_int free_pages; 107 108 vm_offset_t msgbufphys; 109 110 //static struct arm32_dma_range dma_ranges[4]; 111 112 #ifdef PMAP_DEBUG 113 extern int pmap_debug_level; 114 #endif 115 116 #define KERNEL_PT_SYS 0 /* L2 table for mapping vectors page */ 117 118 #define KERNEL_PT_KERNEL 1 /* L2 table for mapping kernel */ 119 #define KERNEL_PT_KERNEL_NUM 4 120 /* L2 tables for mapping kernel VM */ 121 #define KERNEL_PT_VMDATA (KERNEL_PT_KERNEL + KERNEL_PT_KERNEL_NUM) 122 123 #define KERNEL_PT_VMDATA_NUM 4 /* start with 16MB of KVM */ 124 #define NUM_KERNEL_PTS (KERNEL_PT_VMDATA + KERNEL_PT_VMDATA_NUM) 125 126 pv_addr_t kernel_pt_table[NUM_KERNEL_PTS]; 127 128 /* prototypes: */ 129 void consinit(void); 130 static int at91bus_match(device_t, cfdata_t, void *); 131 static void at91bus_attach(device_t, device_t, void *); 132 static int at91bus_search(device_t, cfdata_t, 133 const int *, void *); 134 static int at91bus_print(void *, const char *); 135 static int at91bus_submatch(device_t, cfdata_t, 136 const int *, void *); 137 138 139 CFATTACH_DECL_NEW(at91bus, sizeof(struct at91bus_softc), 140 at91bus_match, at91bus_attach, NULL, NULL); 141 142 struct at91bus_clocks at91bus_clocks = {0}; 143 struct at91bus_softc *at91bus_sc = NULL; 144 145 #include "opt_at91types.h" 146 147 #ifdef AT91RM9200 148 #include <arm/at91/at91rm9200busvar.h> 149 #endif 150 151 #ifdef AT91SAM9260 152 #include <arm/at91/at91sam9260busvar.h> 153 #endif 154 155 #ifdef AT91SAM9261 156 #include <arm/at91/at91sam9261busvar.h> 157 #endif 158 159 static const struct { 160 uint32_t cidr; 161 const char * name; 162 const struct at91bus_machdep *machdep; 163 } at91_types[] = { 164 { 165 DBGU_CIDR_AT91RM9200, 166 "AT91RM9200" 167 #ifdef AT91RM9200 168 , &at91rm9200bus 169 #endif 170 }, 171 { 172 DBGU_CIDR_AT91SAM9260, 173 "AT91SAM9260" 174 #ifdef AT91SAM9260 175 , &at91sam9260bus 176 #endif 177 }, 178 { 179 DBGU_CIDR_AT91SAM9260, 180 "AT91SAM9261" 181 #ifdef AT91SAM9261 182 , &at91sam9261bus 183 #endif 184 }, 185 { 186 DBGU_CIDR_AT91SAM9263, 187 "AT91SAM9263" 188 }, 189 { 190 0, 191 0, 192 0 193 } 194 }; 195 196 uint32_t at91_chip_id; 197 static int at91_chip_ndx = -1; 198 struct at91bus_machdep at91bus_machdep = { 0 }; 199 at91bus_tag_t at91bus_tag = 0; 200 201 static int 202 match_cid(void) 203 { 204 uint32_t cidr; 205 int i; 206 207 /* get chip id */ 208 cidr = DBGUREG(DBGU_CIDR); 209 at91_chip_id = cidr; 210 211 /* do we know it? */ 212 for (i = 0; at91_types[i].name; i++) { 213 if (cidr == at91_types[i].cidr) 214 return i; 215 } 216 217 return -1; 218 } 219 220 int 221 at91bus_init(void) 222 { 223 int i = at91_chip_ndx = match_cid(); 224 225 if (i < 0) 226 panic("%s: unknown chip", __FUNCTION__); 227 228 if (!at91_types[i].machdep) 229 panic("%s: %s is not supported", __FUNCTION__, at91_types[i].name); 230 231 memcpy(&at91bus_machdep, at91_types[i].machdep, sizeof(at91bus_machdep)); 232 at91bus_tag = &at91bus_machdep; 233 234 return 0; 235 } 236 237 u_int 238 at91bus_setup(BootConfig *mem) 239 { 240 int loop; 241 int loop1; 242 u_int l1pagetable; 243 244 consinit(); 245 246 #ifdef VERBOSE_INIT_ARM 247 printf("\nNetBSD/AT91 booting ...\n"); 248 #endif 249 250 // setup the CPU / MMU / TLB functions: 251 if (set_cpufuncs()) 252 panic("%s: cpu not recognized", __FUNCTION__); 253 254 #ifdef VERBOSE_INIT_ARM 255 printf("%s: configuring system...\n", __FUNCTION__); 256 #endif 257 258 /* 259 * Setup the variables that define the availability of 260 * physical memory. 261 */ 262 physical_start = mem->dram[0].address; 263 physical_end = mem->dram[0].address + mem->dram[0].pages * PAGE_SIZE; 264 265 physical_freestart = mem->dram[0].address + 0x9000ULL; 266 physical_freeend = KERNEL_BASE_PHYS; 267 physmem = (physical_end - physical_start) / PAGE_SIZE; 268 269 #ifdef VERBOSE_INIT_ARM 270 printf("physmemory: %d pages at 0x%08lx -> 0x%08lx\n", physmem, 271 physical_start, physical_end - 1); 272 #endif 273 274 free_pages = (physical_freeend - physical_freestart) / PAGE_SIZE; 275 276 #ifdef VERBOSE_INIT_ARM 277 printf("freestart = 0x%08lx, free_pages = %d (0x%08x)\n", 278 physical_freestart, free_pages, free_pages); 279 #endif 280 /* Define a macro to simplify memory allocation */ 281 #define valloc_pages(var, np) \ 282 alloc_pages((var).pv_pa, (np)); \ 283 (var).pv_va = KERNEL_BASE + (var).pv_pa - physical_start; 284 285 #define alloc_pages(var, np) \ 286 physical_freeend -= ((np) * PAGE_SIZE); \ 287 if (physical_freeend < physical_freestart) \ 288 panic("initarm: out of memory"); \ 289 (var) = physical_freeend; \ 290 free_pages -= (np); \ 291 memset((char *)(var), 0, ((np) * PAGE_SIZE)); 292 293 loop1 = 0; 294 for (loop = 0; loop <= NUM_KERNEL_PTS; ++loop) { 295 /* Are we 16KB aligned for an L1 ? */ 296 if (((physical_freeend - L1_TABLE_SIZE) & (L1_TABLE_SIZE - 1)) == 0 297 && kernel_l1pt.pv_pa == 0) { 298 valloc_pages(kernel_l1pt, L1_TABLE_SIZE / PAGE_SIZE); 299 } else { 300 valloc_pages(kernel_pt_table[loop1], 301 L2_TABLE_SIZE / PAGE_SIZE); 302 ++loop1; 303 } 304 } 305 306 /* This should never be able to happen but better confirm that. */ 307 if (!kernel_l1pt.pv_pa || (kernel_l1pt.pv_pa & (L1_TABLE_SIZE-1)) != 0) 308 panic("initarm: Failed to align the kernel page directory"); 309 310 /* 311 * Allocate a page for the system vectors page 312 */ 313 valloc_pages(systempage, 1); 314 systempage.pv_va = 0x00000000; 315 316 /* Allocate stacks for all modes */ 317 valloc_pages(irqstack, IRQ_STACK_SIZE); 318 valloc_pages(abtstack, ABT_STACK_SIZE); 319 valloc_pages(undstack, UND_STACK_SIZE); 320 valloc_pages(kernelstack, UPAGES); 321 322 #ifdef VERBOSE_INIT_ARM 323 printf("IRQ stack: p0x%08lx v0x%08lx\n", irqstack.pv_pa, 324 irqstack.pv_va); 325 printf("ABT stack: p0x%08lx v0x%08lx\n", abtstack.pv_pa, 326 abtstack.pv_va); 327 printf("UND stack: p0x%08lx v0x%08lx\n", undstack.pv_pa, 328 undstack.pv_va); 329 printf("SVC stack: p0x%08lx v0x%08lx\n", kernelstack.pv_pa, 330 kernelstack.pv_va); 331 #endif 332 333 alloc_pages(msgbufphys, round_page(MSGBUFSIZE) / PAGE_SIZE); 334 335 /* 336 * Ok we have allocated physical pages for the primary kernel 337 * page tables. Save physical_freeend for when we give whats left 338 * of memory below 2Mbyte to UVM. 339 */ 340 341 physical_freeend_low = physical_freeend; 342 343 #ifdef VERBOSE_INIT_ARM 344 printf("Creating L1 page table at 0x%08lx\n", kernel_l1pt.pv_pa); 345 #endif 346 347 /* 348 * Now we start construction of the L1 page table 349 * We start by mapping the L2 page tables into the L1. 350 * This means that we can replace L1 mappings later on if necessary 351 */ 352 l1pagetable = kernel_l1pt.pv_pa; 353 354 /* Map the L2 pages tables in the L1 page table */ 355 pmap_link_l2pt(l1pagetable, 0x00000000, &kernel_pt_table[KERNEL_PT_SYS]); 356 for (loop = 0; loop < KERNEL_PT_KERNEL_NUM; loop++) 357 pmap_link_l2pt(l1pagetable, KERNEL_BASE + loop * 0x00400000, 358 &kernel_pt_table[KERNEL_PT_KERNEL + loop]); 359 for (loop = 0; loop < KERNEL_PT_VMDATA_NUM; loop++) 360 pmap_link_l2pt(l1pagetable, KERNEL_VM_BASE + loop * 0x00400000, 361 &kernel_pt_table[KERNEL_PT_VMDATA + loop]); 362 363 /* update the top of the kernel VM */ 364 pmap_curmaxkvaddr = 365 KERNEL_VM_BASE + (KERNEL_PT_VMDATA_NUM * 0x00400000); 366 367 #ifdef VERBOSE_INIT_ARM 368 printf("Mapping kernel\n"); 369 #endif 370 371 /* Now we fill in the L2 pagetable for the kernel static code/data */ 372 { 373 extern char etext[], _end[]; 374 size_t textsize = (uintptr_t) etext - KERNEL_TEXT_BASE; 375 size_t totalsize = (uintptr_t) _end - KERNEL_TEXT_BASE; 376 u_int logical; 377 378 textsize = (textsize + PGOFSET) & ~PGOFSET; 379 totalsize = (totalsize + PGOFSET) & ~PGOFSET; 380 381 logical = KERNEL_BASE_PHYS - mem->dram[0].address; /* offset of kernel in RAM */ 382 logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical, 383 physical_start + logical, textsize, 384 VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 385 logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical, 386 physical_start + logical, totalsize - textsize, 387 VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 388 } 389 390 #ifdef VERBOSE_INIT_ARM 391 printf("Constructing L2 page tables\n"); 392 #endif 393 394 /* Map the stack pages */ 395 pmap_map_chunk(l1pagetable, irqstack.pv_va, irqstack.pv_pa, 396 IRQ_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 397 pmap_map_chunk(l1pagetable, abtstack.pv_va, abtstack.pv_pa, 398 ABT_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 399 pmap_map_chunk(l1pagetable, undstack.pv_va, undstack.pv_pa, 400 UND_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 401 pmap_map_chunk(l1pagetable, kernelstack.pv_va, kernelstack.pv_pa, 402 UPAGES * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 403 404 pmap_map_chunk(l1pagetable, kernel_l1pt.pv_va, kernel_l1pt.pv_pa, 405 L1_TABLE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE); 406 407 for (loop = 0; loop < NUM_KERNEL_PTS; ++loop) { 408 pmap_map_chunk(l1pagetable, kernel_pt_table[loop].pv_va, 409 kernel_pt_table[loop].pv_pa, L2_TABLE_SIZE, 410 VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE); 411 } 412 413 /* Map the vector page. */ 414 pmap_map_entry(l1pagetable, ARM_VECTORS_LOW, systempage.pv_pa, 415 VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 416 417 /* Map the statically mapped devices. */ 418 pmap_devmap_bootstrap(l1pagetable, at91_devmap()); 419 420 /* 421 * Update the physical_freestart/physical_freeend/free_pages 422 * variables. 423 */ 424 { 425 extern char _end[]; 426 427 physical_freestart = physical_start + 428 (((((uintptr_t) _end) + PGOFSET) & ~PGOFSET) - 429 KERNEL_BASE); 430 physical_freeend = physical_end; 431 free_pages = 432 (physical_freeend - physical_freestart) / PAGE_SIZE; 433 } 434 435 /* 436 * Now we have the real page tables in place so we can switch to them. 437 * Once this is done we will be running with the REAL kernel page 438 * tables. 439 */ 440 441 /* Switch tables */ 442 #ifdef VERBOSE_INIT_ARM 443 printf("freestart = 0x%08lx, free_pages = %d (0x%x)\n", 444 physical_freestart, free_pages, free_pages); 445 printf("switching to new L1 page table @%#lx...", kernel_l1pt.pv_pa); 446 #endif 447 cpu_domains((DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)) | DOMAIN_CLIENT); 448 cpu_setttb(kernel_l1pt.pv_pa, true); 449 cpu_tlb_flushID(); 450 cpu_domains(DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)); 451 452 /* 453 * Moved from cpu_startup() as data_abort_handler() references 454 * this during uvm init 455 */ 456 uvm_lwp_setuarea(&lwp0, kernelstack.pv_va); 457 458 #ifdef VERBOSE_INIT_ARM 459 printf("done!\n"); 460 #endif 461 462 #ifdef VERBOSE_INIT_ARM 463 printf("bootstrap done.\n"); 464 #endif 465 466 /* @@@@ check this out: @@@ */ 467 arm32_vector_init(ARM_VECTORS_LOW, ARM_VEC_ALL); 468 469 /* 470 * Pages were allocated during the secondary bootstrap for the 471 * stacks for different CPU modes. 472 * We must now set the r13 registers in the different CPU modes to 473 * point to these stacks. 474 * Since the ARM stacks use STMFD etc. we must set r13 to the top end 475 * of the stack memory. 476 */ 477 #ifdef VERBOSE_INIT_ARM 478 printf("init subsystems: stacks "); 479 #endif 480 481 set_stackptr(PSR_IRQ32_MODE, 482 irqstack.pv_va + IRQ_STACK_SIZE * PAGE_SIZE); 483 set_stackptr(PSR_ABT32_MODE, 484 abtstack.pv_va + ABT_STACK_SIZE * PAGE_SIZE); 485 set_stackptr(PSR_UND32_MODE, 486 undstack.pv_va + UND_STACK_SIZE * PAGE_SIZE); 487 488 /* 489 * Well we should set a data abort handler. 490 * Once things get going this will change as we will need a proper 491 * handler. 492 * Until then we will use a handler that just panics but tells us 493 * why. 494 * Initialisation of the vectors will just panic on a data abort. 495 * This just fills in a slightly better one. 496 */ 497 #ifdef VERBOSE_INIT_ARM 498 printf("vectors "); 499 #endif 500 data_abort_handler_address = (u_int)data_abort_handler; 501 prefetch_abort_handler_address = (u_int)prefetch_abort_handler; 502 undefined_handler_address = (u_int)undefinedinstruction_bounce; 503 504 /* Initialise the undefined instruction handlers */ 505 #ifdef VERBOSE_INIT_ARM 506 printf("undefined "); 507 #endif 508 undefined_init(); 509 510 /* Load memory into UVM. */ 511 #ifdef VERBOSE_INIT_ARM 512 printf("page "); 513 #endif 514 uvm_setpagesize(); /* initialize PAGE_SIZE-dependent variables */ 515 uvm_page_physload(atop(physical_freestart), atop(physical_freeend), 516 atop(physical_freestart), atop(physical_freeend), 517 VM_FREELIST_DEFAULT); 518 uvm_page_physload(atop(physical_start), atop(physical_freeend_low), 519 atop(physical_start), atop(physical_freeend_low), 520 VM_FREELIST_DEFAULT); 521 522 /* Boot strap pmap telling it where the kernel page table is */ 523 #ifdef VERBOSE_INIT_ARM 524 printf("pmap "); 525 #endif 526 pmap_bootstrap(KERNEL_VM_BASE, KERNEL_VM_BASE + KERNEL_VM_SIZE); 527 528 /* Setup the IRQ system */ 529 #ifdef VERBOSE_INIT_ARM 530 printf("irq "); 531 #endif 532 at91_intr_init(); 533 534 #ifdef VERBOSE_INIT_ARM 535 printf("done.\n"); 536 #endif 537 538 #ifdef BOOTHOWTO 539 boothowto = BOOTHOWTO; 540 #endif 541 boothowto = AB_VERBOSE | AB_DEBUG; // @@@@ 542 543 #ifdef IPKDB 544 /* Initialise ipkdb */ 545 ipkdb_init(); 546 if (boothowto & RB_KDB) 547 ipkdb_connect(0); 548 #endif 549 550 #ifdef DDB 551 db_machine_init(); 552 if (boothowto & RB_KDB) 553 Debugger(); 554 #endif 555 #if 0 556 printf("test data abort...\n"); 557 *((volatile uint32_t*)(0x1234567F)) = 0xdeadbeef; 558 #endif 559 560 #ifdef VERBOSE_INIT_ARM 561 printf("%s: returning new stack pointer 0x%lX\n", __FUNCTION__, (kernelstack.pv_va + USPACE_SVC_STACK_TOP)); 562 #endif 563 564 /* We return the new stack pointer address */ 565 return(kernelstack.pv_va + USPACE_SVC_STACK_TOP); 566 } 567 568 static int 569 at91bus_match(device_t parent, cfdata_t match, void *aux) 570 { 571 // we could detect the device here... 572 if (strcmp(match->cf_name, "at91bus") == 0) 573 return 1; 574 return 0; 575 } 576 577 static device_t 578 at91bus_found(device_t self, bus_addr_t addr, int pid) 579 { 580 int locs[AT91BUSCF_NLOCS]; 581 struct at91bus_attach_args sa; 582 struct at91bus_softc *sc; 583 584 memset(&locs, 0, sizeof(locs)); 585 memset(&sa, 0, sizeof(sa)); 586 587 locs[AT91BUSCF_ADDR] = addr; 588 locs[AT91BUSCF_PID] = pid; 589 590 sc = device_private(self); 591 sa.sa_iot = sc->sc_iot; 592 sa.sa_dmat = sc->sc_dmat; 593 sa.sa_addr = addr; 594 sa.sa_size = 1; 595 sa.sa_pid = pid; 596 597 return config_found_sm_loc(self, "at91bus", locs, &sa, 598 at91bus_print, at91bus_submatch); 599 } 600 601 static void 602 at91bus_attach(device_t parent, device_t self, void *aux) 603 { 604 struct at91bus_softc *sc; 605 606 if (at91_chip_ndx < 0) 607 panic("%s: at91bus_init() has not been called!", __FUNCTION__); 608 609 sc = device_private(self); 610 611 /* initialize bus space and bus dma things... */ 612 sc->sc_iot = &at91_bs_tag; 613 sc->sc_dmat = at91_bus_dma_init(&at91_bd_tag); 614 615 if (at91bus_sc == NULL) 616 at91bus_sc = sc; 617 618 printf(": %s, sclk %u.%03u kHz, mclk %u.%03u MHz, pclk %u.%03u MHz, mstclk %u.%03u, plla %u.%03u, pllb %u.%03u MHz\n", 619 at91_types[at91_chip_ndx].name, 620 AT91_SCLK / 1000U, AT91_SCLK % 1000U, 621 AT91_MCLK / 1000000U, (AT91_MCLK / 1000U) % 1000U, 622 AT91_PCLK / 1000000U, (AT91_PCLK / 1000U) % 1000U, 623 AT91_MSTCLK / 1000000U, (AT91_MSTCLK / 1000U) % 1000U, 624 AT91_PLLACLK / 1000000U, (AT91_PLLACLK / 1000U) % 1000U, 625 AT91_PLLBCLK / 1000000U, (AT91_PLLBCLK / 1000U) % 1000U); 626 627 /* 628 * Attach devices 629 */ 630 at91_search_peripherals(self, at91bus_found); 631 632 633 struct at91bus_attach_args sa; 634 memset(&sa, 0, sizeof(sa)); 635 sa.sa_iot = sc->sc_iot; 636 sa.sa_dmat = sc->sc_dmat; 637 config_search_ia(at91bus_search, self, "at91bus", &sa); 638 } 639 640 int 641 at91bus_submatch(device_t parent, cfdata_t cf, const int *ldesc, void *aux) 642 { 643 struct at91bus_attach_args *sa = aux; 644 645 if (cf->cf_loc[AT91BUSCF_ADDR] == ldesc[AT91BUSCF_ADDR] 646 && cf->cf_loc[AT91BUSCF_PID] == ldesc[AT91BUSCF_PID]) { 647 sa->sa_addr = cf->cf_loc[AT91BUSCF_ADDR]; 648 sa->sa_size = cf->cf_loc[AT91BUSCF_SIZE]; 649 sa->sa_pid = cf->cf_loc[AT91BUSCF_PID]; 650 return (config_match(parent, cf, aux)); 651 } else 652 return (0); 653 } 654 655 int 656 at91bus_search(device_t parent, cfdata_t cf, const int *ldesc, void *aux) 657 { 658 struct at91bus_attach_args *sa = aux; 659 660 sa->sa_addr = cf->cf_loc[AT91BUSCF_ADDR]; 661 sa->sa_size = cf->cf_loc[AT91BUSCF_SIZE]; 662 sa->sa_pid = cf->cf_loc[AT91BUSCF_PID]; 663 664 if (config_match(parent, cf, aux) > 0) 665 config_attach(parent, cf, aux, at91bus_print); 666 667 return (0); 668 } 669 670 static int 671 at91bus_print(void *aux, const char *name) 672 { 673 struct at91bus_attach_args *sa = (struct at91bus_attach_args*)aux; 674 675 if (name) 676 aprint_normal("%s at %s", sa->sa_pid >= 0 ? at91_peripheral_name(sa->sa_pid) : "device", name); 677 678 if (sa->sa_size) 679 aprint_normal(" at addr 0x%lx", sa->sa_addr); 680 if (sa->sa_size > 1) 681 aprint_normal("-0x%lx", sa->sa_addr + sa->sa_size - 1); 682 if (sa->sa_pid >= 0) 683 aprint_normal(" pid %d", sa->sa_pid); 684 685 return (UNCONF); 686 } 687 688 void consinit(void) 689 { 690 static int consinit_called; 691 692 if (consinit_called != 0) 693 return; 694 695 consinit_called = 1; 696 697 if (at91_chip_ndx < 0) 698 panic("%s: at91_init() has not been called!", __FUNCTION__); 699 700 // call machine specific bus initialization code 701 (*at91bus_tag->init)(&at91bus_clocks); 702 703 // attach console 704 (*at91bus_tag->attach_cn)(&at91_bs_tag, cnspeed, cnmode); 705 } 706