1 /* $NetBSD: at91bus.c,v 1.20 2018/07/15 05:16:41 maxv 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 1.20 2018/07/15 05:16:41 maxv 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 #define UND_STACK_SIZE 8 41 42 #include <sys/param.h> 43 #include <sys/device.h> 44 #include <sys/systm.h> 45 #include <sys/kernel.h> 46 #include <sys/exec.h> 47 #include <sys/proc.h> 48 #include <sys/msgbuf.h> 49 #include <sys/reboot.h> 50 #include <sys/termios.h> 51 #include <sys/ksyms.h> 52 #include <sys/bus.h> 53 #include <sys/cpu.h> 54 #include <sys/termios.h> 55 56 #include <uvm/uvm_extern.h> 57 58 #include <dev/cons.h> 59 60 #include <machine/db_machdep.h> 61 #include <ddb/db_sym.h> 62 #include <ddb/db_extern.h> 63 64 #include <arm/locore.h> 65 #include <arm/undefined.h> 66 67 #include <arm/arm32/machdep.h> 68 69 #include <arm/at91/at91var.h> 70 #include <arm/at91/at91busvar.h> 71 #include <arm/at91/at91dbgureg.h> 72 73 #include <machine/bootconfig.h> 74 75 /* console stuff: */ 76 #ifndef CONSPEED 77 #define CONSPEED B115200 78 #endif 79 80 #ifndef CONMODE 81 #define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */ 82 #endif 83 84 int cnspeed = CONSPEED; 85 int cnmode = CONMODE; 86 87 88 /* kernel mapping: */ 89 #define KERNEL_BASE_PHYS 0x20200000 90 #define KERNEL_TEXT_BASE (KERNEL_BASE + 0x00200000) 91 #define KERNEL_VM_BASE (KERNEL_BASE + 0x01000000) 92 #define KERNEL_VM_SIZE 0x0C000000 93 94 95 96 /* boot configuration: */ 97 vaddr_t physical_start; 98 vaddr_t physical_freestart; 99 vaddr_t physical_freeend; 100 vaddr_t physical_freeend_low; 101 vaddr_t physical_end; 102 u_int free_pages; 103 104 paddr_t msgbufphys; 105 106 //static struct arm32_dma_range dma_ranges[4]; 107 108 #ifdef PMAP_DEBUG 109 extern int pmap_debug_level; 110 #endif 111 112 #define KERNEL_PT_SYS 0 /* L2 table for mapping vectors page */ 113 114 #define KERNEL_PT_KERNEL 1 /* L2 table for mapping kernel */ 115 #define KERNEL_PT_KERNEL_NUM 4 116 /* L2 tables for mapping kernel VM */ 117 #define KERNEL_PT_VMDATA (KERNEL_PT_KERNEL + KERNEL_PT_KERNEL_NUM) 118 119 #define KERNEL_PT_VMDATA_NUM 4 /* start with 16MB of KVM */ 120 #define NUM_KERNEL_PTS (KERNEL_PT_VMDATA + KERNEL_PT_VMDATA_NUM) 121 122 pv_addr_t kernel_pt_table[NUM_KERNEL_PTS]; 123 124 /* prototypes: */ 125 void consinit(void); 126 static int at91bus_match(device_t, cfdata_t, void *); 127 static void at91bus_attach(device_t, device_t, void *); 128 static int at91bus_search(device_t, cfdata_t, 129 const int *, void *); 130 static int at91bus_print(void *, const char *); 131 static int at91bus_submatch(device_t, cfdata_t, 132 const int *, void *); 133 134 135 CFATTACH_DECL_NEW(at91bus, sizeof(struct at91bus_softc), 136 at91bus_match, at91bus_attach, NULL, NULL); 137 138 struct at91bus_clocks at91bus_clocks = {0}; 139 struct at91bus_softc *at91bus_sc = NULL; 140 141 #include "opt_at91types.h" 142 143 #ifdef AT91RM9200 144 #include <arm/at91/at91rm9200busvar.h> 145 #endif 146 147 #ifdef AT91SAM9260 148 #include <arm/at91/at91sam9260busvar.h> 149 #endif 150 151 #ifdef AT91SAM9261 152 #include <arm/at91/at91sam9261busvar.h> 153 #endif 154 155 static const struct { 156 uint32_t cidr; 157 const char * name; 158 const struct at91bus_machdep *machdep; 159 } at91_types[] = { 160 { 161 DBGU_CIDR_AT91RM9200, 162 "AT91RM9200" 163 #ifdef AT91RM9200 164 , &at91rm9200bus 165 #endif 166 }, 167 { 168 DBGU_CIDR_AT91SAM9260, 169 "AT91SAM9260" 170 #ifdef AT91SAM9260 171 , &at91sam9260bus 172 #endif 173 }, 174 { 175 DBGU_CIDR_AT91SAM9260, 176 "AT91SAM9261" 177 #ifdef AT91SAM9261 178 , &at91sam9261bus 179 #endif 180 }, 181 { 182 DBGU_CIDR_AT91SAM9263, 183 "AT91SAM9263" 184 }, 185 { 186 0, 187 0, 188 0 189 } 190 }; 191 192 uint32_t at91_chip_id; 193 static int at91_chip_ndx = -1; 194 struct at91bus_machdep at91bus_machdep = { 0 }; 195 at91bus_tag_t at91bus_tag = 0; 196 197 static int 198 match_cid(void) 199 { 200 uint32_t cidr; 201 int i; 202 203 /* get chip id */ 204 cidr = DBGUREG(DBGU_CIDR); 205 at91_chip_id = cidr; 206 207 /* do we know it? */ 208 for (i = 0; at91_types[i].name; i++) { 209 if (cidr == at91_types[i].cidr) 210 return i; 211 } 212 213 return -1; 214 } 215 216 int 217 at91bus_init(void) 218 { 219 int i = at91_chip_ndx = match_cid(); 220 221 if (i < 0) 222 panic("%s: unknown chip", __FUNCTION__); 223 224 if (!at91_types[i].machdep) 225 panic("%s: %s is not supported", __FUNCTION__, at91_types[i].name); 226 227 memcpy(&at91bus_machdep, at91_types[i].machdep, sizeof(at91bus_machdep)); 228 at91bus_tag = &at91bus_machdep; 229 230 return 0; 231 } 232 233 u_int 234 at91bus_setup(BootConfig *mem) 235 { 236 int loop; 237 int loop1; 238 u_int l1pagetable; 239 240 consinit(); 241 242 #ifdef VERBOSE_INIT_ARM 243 printf("\nNetBSD/AT91 booting ...\n"); 244 #endif 245 246 // setup the CPU / MMU / TLB functions: 247 if (set_cpufuncs()) 248 panic("%s: cpu not recognized", __FUNCTION__); 249 250 #ifdef VERBOSE_INIT_ARM 251 printf("%s: configuring system...\n", __FUNCTION__); 252 #endif 253 254 /* 255 * Setup the variables that define the availability of 256 * physical memory. 257 */ 258 physical_start = mem->dram[0].address; 259 physical_end = mem->dram[0].address + mem->dram[0].pages * PAGE_SIZE; 260 261 physical_freestart = mem->dram[0].address + 0x9000ULL; 262 physical_freeend = KERNEL_BASE_PHYS; 263 physmem = (physical_end - physical_start) / PAGE_SIZE; 264 265 #ifdef VERBOSE_INIT_ARM 266 printf("physmemory: %d pages at 0x%08lx -> 0x%08lx\n", physmem, 267 physical_start, physical_end - 1); 268 #endif 269 270 free_pages = (physical_freeend - physical_freestart) / PAGE_SIZE; 271 272 #ifdef VERBOSE_INIT_ARM 273 printf("freestart = 0x%08lx, free_pages = %d (0x%08x)\n", 274 physical_freestart, free_pages, free_pages); 275 #endif 276 /* Define a macro to simplify memory allocation */ 277 #define valloc_pages(var, np) \ 278 alloc_pages((var).pv_pa, (np)); \ 279 (var).pv_va = KERNEL_BASE + (var).pv_pa - physical_start; 280 281 #define alloc_pages(var, np) \ 282 physical_freeend -= ((np) * PAGE_SIZE); \ 283 if (physical_freeend < physical_freestart) \ 284 panic("initarm: out of memory"); \ 285 (var) = physical_freeend; \ 286 free_pages -= (np); \ 287 memset((char *)(var), 0, ((np) * PAGE_SIZE)); 288 289 loop1 = 0; 290 for (loop = 0; loop <= NUM_KERNEL_PTS; ++loop) { 291 /* Are we 16KB aligned for an L1 ? */ 292 if (((physical_freeend - L1_TABLE_SIZE) & (L1_TABLE_SIZE - 1)) == 0 293 && kernel_l1pt.pv_pa == 0) { 294 valloc_pages(kernel_l1pt, L1_TABLE_SIZE / PAGE_SIZE); 295 } else { 296 valloc_pages(kernel_pt_table[loop1], 297 L2_TABLE_SIZE / PAGE_SIZE); 298 ++loop1; 299 } 300 } 301 302 /* This should never be able to happen but better confirm that. */ 303 if (!kernel_l1pt.pv_pa || (kernel_l1pt.pv_pa & (L1_TABLE_SIZE-1)) != 0) 304 panic("initarm: Failed to align the kernel page directory"); 305 306 /* 307 * Allocate a page for the system vectors page 308 */ 309 valloc_pages(systempage, 1); 310 systempage.pv_va = 0x00000000; 311 312 /* Allocate stacks for all modes */ 313 valloc_pages(irqstack, IRQ_STACK_SIZE); 314 valloc_pages(abtstack, ABT_STACK_SIZE); 315 valloc_pages(undstack, UND_STACK_SIZE); 316 valloc_pages(kernelstack, UPAGES); 317 318 #ifdef VERBOSE_INIT_ARM 319 printf("IRQ stack: p0x%08lx v0x%08lx\n", irqstack.pv_pa, 320 irqstack.pv_va); 321 printf("ABT stack: p0x%08lx v0x%08lx\n", abtstack.pv_pa, 322 abtstack.pv_va); 323 printf("UND stack: p0x%08lx v0x%08lx\n", undstack.pv_pa, 324 undstack.pv_va); 325 printf("SVC stack: p0x%08lx v0x%08lx\n", kernelstack.pv_pa, 326 kernelstack.pv_va); 327 #endif 328 329 alloc_pages(msgbufphys, round_page(MSGBUFSIZE) / PAGE_SIZE); 330 331 /* 332 * Ok we have allocated physical pages for the primary kernel 333 * page tables. Save physical_freeend for when we give whats left 334 * of memory below 2Mbyte to UVM. 335 */ 336 337 physical_freeend_low = physical_freeend; 338 339 #ifdef VERBOSE_INIT_ARM 340 printf("Creating L1 page table at 0x%08lx\n", kernel_l1pt.pv_pa); 341 #endif 342 343 /* 344 * Now we start construction of the L1 page table 345 * We start by mapping the L2 page tables into the L1. 346 * This means that we can replace L1 mappings later on if necessary 347 */ 348 l1pagetable = kernel_l1pt.pv_pa; 349 350 /* Map the L2 pages tables in the L1 page table */ 351 pmap_link_l2pt(l1pagetable, 0x00000000, &kernel_pt_table[KERNEL_PT_SYS]); 352 for (loop = 0; loop < KERNEL_PT_KERNEL_NUM; loop++) 353 pmap_link_l2pt(l1pagetable, KERNEL_BASE + loop * 0x00400000, 354 &kernel_pt_table[KERNEL_PT_KERNEL + loop]); 355 for (loop = 0; loop < KERNEL_PT_VMDATA_NUM; loop++) 356 pmap_link_l2pt(l1pagetable, KERNEL_VM_BASE + loop * 0x00400000, 357 &kernel_pt_table[KERNEL_PT_VMDATA + loop]); 358 359 /* update the top of the kernel VM */ 360 pmap_curmaxkvaddr = 361 KERNEL_VM_BASE + (KERNEL_PT_VMDATA_NUM * 0x00400000); 362 363 #ifdef VERBOSE_INIT_ARM 364 printf("Mapping kernel\n"); 365 #endif 366 367 /* Now we fill in the L2 pagetable for the kernel static code/data */ 368 { 369 extern char etext[], _end[]; 370 size_t textsize = (uintptr_t) etext - KERNEL_TEXT_BASE; 371 size_t totalsize = (uintptr_t) _end - KERNEL_TEXT_BASE; 372 u_int logical; 373 374 textsize = (textsize + PGOFSET) & ~PGOFSET; 375 totalsize = (totalsize + PGOFSET) & ~PGOFSET; 376 377 logical = KERNEL_BASE_PHYS - mem->dram[0].address; /* offset of kernel in RAM */ 378 logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical, 379 physical_start + logical, textsize, 380 VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 381 logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical, 382 physical_start + logical, totalsize - textsize, 383 VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 384 } 385 386 #ifdef VERBOSE_INIT_ARM 387 printf("Constructing L2 page tables\n"); 388 #endif 389 390 /* Map the stack pages */ 391 pmap_map_chunk(l1pagetable, irqstack.pv_va, irqstack.pv_pa, 392 IRQ_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 393 pmap_map_chunk(l1pagetable, abtstack.pv_va, abtstack.pv_pa, 394 ABT_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 395 pmap_map_chunk(l1pagetable, undstack.pv_va, undstack.pv_pa, 396 UND_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 397 pmap_map_chunk(l1pagetable, kernelstack.pv_va, kernelstack.pv_pa, 398 UPAGES * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 399 400 pmap_map_chunk(l1pagetable, kernel_l1pt.pv_va, kernel_l1pt.pv_pa, 401 L1_TABLE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE); 402 403 for (loop = 0; loop < NUM_KERNEL_PTS; ++loop) { 404 pmap_map_chunk(l1pagetable, kernel_pt_table[loop].pv_va, 405 kernel_pt_table[loop].pv_pa, L2_TABLE_SIZE, 406 VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE); 407 } 408 409 /* Map the vector page. */ 410 pmap_map_entry(l1pagetable, ARM_VECTORS_LOW, systempage.pv_pa, 411 VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 412 413 /* Map the statically mapped devices. */ 414 pmap_devmap_bootstrap(l1pagetable, at91_devmap()); 415 416 /* 417 * Update the physical_freestart/physical_freeend/free_pages 418 * variables. 419 */ 420 { 421 extern char _end[]; 422 423 physical_freestart = physical_start + 424 (((((uintptr_t) _end) + PGOFSET) & ~PGOFSET) - 425 KERNEL_BASE); 426 physical_freeend = physical_end; 427 free_pages = 428 (physical_freeend - physical_freestart) / PAGE_SIZE; 429 } 430 431 /* 432 * Now we have the real page tables in place so we can switch to them. 433 * Once this is done we will be running with the REAL kernel page 434 * tables. 435 */ 436 437 /* Switch tables */ 438 #ifdef VERBOSE_INIT_ARM 439 printf("freestart = 0x%08lx, free_pages = %d (0x%x)\n", 440 physical_freestart, free_pages, free_pages); 441 printf("switching to new L1 page table @%#lx...", kernel_l1pt.pv_pa); 442 #endif 443 cpu_domains((DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)) | DOMAIN_CLIENT); 444 cpu_setttb(kernel_l1pt.pv_pa, true); 445 cpu_tlb_flushID(); 446 cpu_domains(DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)); 447 448 /* 449 * Moved from cpu_startup() as data_abort_handler() references 450 * this during uvm init 451 */ 452 uvm_lwp_setuarea(&lwp0, kernelstack.pv_va); 453 454 #ifdef VERBOSE_INIT_ARM 455 printf("done!\n"); 456 #endif 457 458 #ifdef VERBOSE_INIT_ARM 459 printf("bootstrap done.\n"); 460 #endif 461 462 /* @@@@ check this out: @@@ */ 463 arm32_vector_init(ARM_VECTORS_LOW, ARM_VEC_ALL); 464 465 /* 466 * Pages were allocated during the secondary bootstrap for the 467 * stacks for different CPU modes. 468 * We must now set the r13 registers in the different CPU modes to 469 * point to these stacks. 470 * Since the ARM stacks use STMFD etc. we must set r13 to the top end 471 * of the stack memory. 472 */ 473 #ifdef VERBOSE_INIT_ARM 474 printf("init subsystems: stacks "); 475 #endif 476 477 set_stackptr(PSR_IRQ32_MODE, 478 irqstack.pv_va + IRQ_STACK_SIZE * PAGE_SIZE); 479 set_stackptr(PSR_ABT32_MODE, 480 abtstack.pv_va + ABT_STACK_SIZE * PAGE_SIZE); 481 set_stackptr(PSR_UND32_MODE, 482 undstack.pv_va + UND_STACK_SIZE * PAGE_SIZE); 483 484 /* 485 * Well we should set a data abort handler. 486 * Once things get going this will change as we will need a proper 487 * handler. 488 * Until then we will use a handler that just panics but tells us 489 * why. 490 * Initialisation of the vectors will just panic on a data abort. 491 * This just fills in a slightly better one. 492 */ 493 #ifdef VERBOSE_INIT_ARM 494 printf("vectors "); 495 #endif 496 data_abort_handler_address = (u_int)data_abort_handler; 497 prefetch_abort_handler_address = (u_int)prefetch_abort_handler; 498 undefined_handler_address = (u_int)undefinedinstruction_bounce; 499 500 /* Initialise the undefined instruction handlers */ 501 #ifdef VERBOSE_INIT_ARM 502 printf("undefined "); 503 #endif 504 undefined_init(); 505 506 /* Load memory into UVM. */ 507 #ifdef VERBOSE_INIT_ARM 508 printf("page "); 509 #endif 510 uvm_md_init(); 511 uvm_page_physload(atop(physical_freestart), atop(physical_freeend), 512 atop(physical_freestart), atop(physical_freeend), 513 VM_FREELIST_DEFAULT); 514 uvm_page_physload(atop(physical_start), atop(physical_freeend_low), 515 atop(physical_start), atop(physical_freeend_low), 516 VM_FREELIST_DEFAULT); 517 518 /* Boot strap pmap telling it where the kernel page table is */ 519 #ifdef VERBOSE_INIT_ARM 520 printf("pmap "); 521 #endif 522 pmap_bootstrap(KERNEL_VM_BASE, KERNEL_VM_BASE + KERNEL_VM_SIZE); 523 524 /* Setup the IRQ system */ 525 #ifdef VERBOSE_INIT_ARM 526 printf("irq "); 527 #endif 528 at91_intr_init(); 529 530 #ifdef VERBOSE_INIT_ARM 531 printf("done.\n"); 532 #endif 533 534 #ifdef BOOTHOWTO 535 boothowto = BOOTHOWTO; 536 #endif 537 boothowto = AB_VERBOSE | AB_DEBUG; // @@@@ 538 539 #ifdef DDB 540 db_machine_init(); 541 if (boothowto & RB_KDB) 542 Debugger(); 543 #endif 544 #if 0 545 printf("test data abort...\n"); 546 *((volatile uint32_t*)(0x1234567F)) = 0xdeadbeef; 547 #endif 548 549 #ifdef VERBOSE_INIT_ARM 550 printf("%s: returning new stack pointer 0x%lX\n", __FUNCTION__, (kernelstack.pv_va + USPACE_SVC_STACK_TOP)); 551 #endif 552 553 /* We return the new stack pointer address */ 554 return(kernelstack.pv_va + USPACE_SVC_STACK_TOP); 555 } 556 557 static int 558 at91bus_match(device_t parent, cfdata_t match, void *aux) 559 { 560 // we could detect the device here... 561 if (strcmp(match->cf_name, "at91bus") == 0) 562 return 1; 563 return 0; 564 } 565 566 static device_t 567 at91bus_found(device_t self, bus_addr_t addr, int pid) 568 { 569 int locs[AT91BUSCF_NLOCS]; 570 struct at91bus_attach_args sa; 571 struct at91bus_softc *sc; 572 573 memset(&locs, 0, sizeof(locs)); 574 memset(&sa, 0, sizeof(sa)); 575 576 locs[AT91BUSCF_ADDR] = addr; 577 locs[AT91BUSCF_PID] = pid; 578 579 sc = device_private(self); 580 sa.sa_iot = sc->sc_iot; 581 sa.sa_dmat = sc->sc_dmat; 582 sa.sa_addr = addr; 583 sa.sa_size = 1; 584 sa.sa_pid = pid; 585 586 return config_found_sm_loc(self, "at91bus", locs, &sa, 587 at91bus_print, at91bus_submatch); 588 } 589 590 static void 591 at91bus_attach(device_t parent, device_t self, void *aux) 592 { 593 struct at91bus_softc *sc; 594 595 if (at91_chip_ndx < 0) 596 panic("%s: at91bus_init() has not been called!", __FUNCTION__); 597 598 sc = device_private(self); 599 600 /* initialize bus space and bus dma things... */ 601 sc->sc_iot = &at91_bs_tag; 602 sc->sc_dmat = at91_bus_dma_init(&at91_bd_tag); 603 604 if (at91bus_sc == NULL) 605 at91bus_sc = sc; 606 607 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", 608 at91_types[at91_chip_ndx].name, 609 AT91_SCLK / 1000U, AT91_SCLK % 1000U, 610 AT91_MCLK / 1000000U, (AT91_MCLK / 1000U) % 1000U, 611 AT91_PCLK / 1000000U, (AT91_PCLK / 1000U) % 1000U, 612 AT91_MSTCLK / 1000000U, (AT91_MSTCLK / 1000U) % 1000U, 613 AT91_PLLACLK / 1000000U, (AT91_PLLACLK / 1000U) % 1000U, 614 AT91_PLLBCLK / 1000000U, (AT91_PLLBCLK / 1000U) % 1000U); 615 616 /* 617 * Attach devices 618 */ 619 at91_search_peripherals(self, at91bus_found); 620 621 622 struct at91bus_attach_args sa; 623 memset(&sa, 0, sizeof(sa)); 624 sa.sa_iot = sc->sc_iot; 625 sa.sa_dmat = sc->sc_dmat; 626 config_search_ia(at91bus_search, self, "at91bus", &sa); 627 } 628 629 int 630 at91bus_submatch(device_t parent, cfdata_t cf, const int *ldesc, void *aux) 631 { 632 struct at91bus_attach_args *sa = aux; 633 634 if (cf->cf_loc[AT91BUSCF_ADDR] == ldesc[AT91BUSCF_ADDR] 635 && cf->cf_loc[AT91BUSCF_PID] == ldesc[AT91BUSCF_PID]) { 636 sa->sa_addr = cf->cf_loc[AT91BUSCF_ADDR]; 637 sa->sa_size = cf->cf_loc[AT91BUSCF_SIZE]; 638 sa->sa_pid = cf->cf_loc[AT91BUSCF_PID]; 639 return (config_match(parent, cf, aux)); 640 } else 641 return (0); 642 } 643 644 int 645 at91bus_search(device_t parent, cfdata_t cf, const int *ldesc, void *aux) 646 { 647 struct at91bus_attach_args *sa = aux; 648 649 sa->sa_addr = cf->cf_loc[AT91BUSCF_ADDR]; 650 sa->sa_size = cf->cf_loc[AT91BUSCF_SIZE]; 651 sa->sa_pid = cf->cf_loc[AT91BUSCF_PID]; 652 653 if (config_match(parent, cf, aux) > 0) 654 config_attach(parent, cf, aux, at91bus_print); 655 656 return (0); 657 } 658 659 static int 660 at91bus_print(void *aux, const char *name) 661 { 662 struct at91bus_attach_args *sa = (struct at91bus_attach_args*)aux; 663 664 if (name) 665 aprint_normal("%s at %s", sa->sa_pid >= 0 ? at91_peripheral_name(sa->sa_pid) : "device", name); 666 667 if (sa->sa_size) 668 aprint_normal(" at addr 0x%lx", sa->sa_addr); 669 if (sa->sa_size > 1) 670 aprint_normal("-0x%lx", sa->sa_addr + sa->sa_size - 1); 671 if (sa->sa_pid >= 0) 672 aprint_normal(" pid %d", sa->sa_pid); 673 674 return (UNCONF); 675 } 676 677 void consinit(void) 678 { 679 static int consinit_called; 680 681 if (consinit_called != 0) 682 return; 683 684 consinit_called = 1; 685 686 if (at91_chip_ndx < 0) 687 panic("%s: at91_init() has not been called!", __FUNCTION__); 688 689 // call machine specific bus initialization code 690 (*at91bus_tag->init)(&at91bus_clocks); 691 692 // attach console 693 (*at91bus_tag->attach_cn)(&at91_bs_tag, cnspeed, cnmode); 694 } 695