1 /* $NetBSD: at91bus.c,v 1.25 2019/07/16 14:41:43 skrll 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 1.25 2019/07/16 14:41:43 skrll Exp $"); 31 32 #include "opt_arm_debug.h" 33 #include "opt_console.h" 34 #include "opt_ddb.h" 35 #include "opt_kgdb.h" 36 #include "opt_pmap_debug.h" 37 #include "locators.h" 38 39 /* Define various stack sizes in pages */ 40 #define IRQ_STACK_SIZE 8 41 #define ABT_STACK_SIZE 8 42 #define UND_STACK_SIZE 8 43 44 #include <sys/param.h> 45 #include <sys/device.h> 46 #include <sys/systm.h> 47 #include <sys/kernel.h> 48 #include <sys/exec.h> 49 #include <sys/proc.h> 50 #include <sys/msgbuf.h> 51 #include <sys/reboot.h> 52 #include <sys/termios.h> 53 #include <sys/ksyms.h> 54 #include <sys/bus.h> 55 #include <sys/cpu.h> 56 #include <sys/termios.h> 57 58 #include <uvm/uvm_extern.h> 59 60 #include <dev/cons.h> 61 62 #include <machine/db_machdep.h> 63 #include <ddb/db_sym.h> 64 #include <ddb/db_extern.h> 65 66 #include <arm/locore.h> 67 #include <arm/undefined.h> 68 69 #include <arm/arm32/machdep.h> 70 71 #include <arm/at91/at91var.h> 72 #include <arm/at91/at91busvar.h> 73 #include <arm/at91/at91dbgureg.h> 74 75 #include <machine/bootconfig.h> 76 77 /* console stuff: */ 78 #ifndef CONSPEED 79 #define CONSPEED B115200 80 #endif 81 82 #ifndef CONMODE 83 #define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */ 84 #endif 85 86 int cnspeed = CONSPEED; 87 int cnmode = CONMODE; 88 89 90 /* kernel mapping: */ 91 #define KERNEL_BASE_PHYS 0x20200000 92 #define KERNEL_TEXT_BASE (KERNEL_BASE + 0x00200000) 93 #define KERNEL_VM_BASE (KERNEL_BASE + 0x01000000) 94 #define KERNEL_VM_SIZE 0x0C000000 95 96 97 98 /* boot configuration: */ 99 vaddr_t physical_start; 100 vaddr_t physical_freestart; 101 vaddr_t physical_freeend; 102 vaddr_t physical_freeend_low; 103 vaddr_t physical_end; 104 u_int free_pages; 105 106 paddr_t msgbufphys; 107 108 //static struct arm32_dma_range dma_ranges[4]; 109 110 #ifdef PMAP_DEBUG 111 extern int pmap_debug_level; 112 #endif 113 114 #define KERNEL_PT_SYS 0 /* L2 table for mapping vectors page */ 115 116 #define KERNEL_PT_KERNEL 1 /* L2 table for mapping kernel */ 117 #define KERNEL_PT_KERNEL_NUM 4 118 /* L2 tables for mapping kernel VM */ 119 #define KERNEL_PT_VMDATA (KERNEL_PT_KERNEL + KERNEL_PT_KERNEL_NUM) 120 121 #define KERNEL_PT_VMDATA_NUM 4 /* start with 16MB of KVM */ 122 #define NUM_KERNEL_PTS (KERNEL_PT_VMDATA + KERNEL_PT_VMDATA_NUM) 123 124 pv_addr_t kernel_pt_table[NUM_KERNEL_PTS]; 125 126 /* prototypes: */ 127 void consinit(void); 128 static int at91bus_match(device_t, cfdata_t, void *); 129 static void at91bus_attach(device_t, device_t, void *); 130 static int at91bus_search(device_t, cfdata_t, 131 const int *, void *); 132 static int at91bus_print(void *, const char *); 133 static int at91bus_submatch(device_t, cfdata_t, 134 const int *, void *); 135 136 137 CFATTACH_DECL_NEW(at91bus, sizeof(struct at91bus_softc), 138 at91bus_match, at91bus_attach, NULL, NULL); 139 140 struct at91bus_clocks at91bus_clocks = {0}; 141 struct at91bus_softc *at91bus_sc = NULL; 142 143 #include "opt_at91types.h" 144 145 #ifdef AT91RM9200 146 #include <arm/at91/at91rm9200busvar.h> 147 #endif 148 149 #ifdef AT91SAM9260 150 #include <arm/at91/at91sam9260busvar.h> 151 #endif 152 153 #ifdef AT91SAM9261 154 #include <arm/at91/at91sam9261busvar.h> 155 #endif 156 157 static const struct { 158 uint32_t cidr; 159 const char * name; 160 const struct at91bus_machdep *machdep; 161 } at91_types[] = { 162 { 163 DBGU_CIDR_AT91RM9200, 164 "AT91RM9200" 165 #ifdef AT91RM9200 166 , &at91rm9200bus 167 #endif 168 }, 169 { 170 DBGU_CIDR_AT91SAM9260, 171 "AT91SAM9260" 172 #ifdef AT91SAM9260 173 , &at91sam9260bus 174 #endif 175 }, 176 { 177 DBGU_CIDR_AT91SAM9260, 178 "AT91SAM9261" 179 #ifdef AT91SAM9261 180 , &at91sam9261bus 181 #endif 182 }, 183 { 184 DBGU_CIDR_AT91SAM9263, 185 "AT91SAM9263" 186 }, 187 { 188 0, 189 0, 190 0 191 } 192 }; 193 194 uint32_t at91_chip_id; 195 static int at91_chip_ndx = -1; 196 struct at91bus_machdep at91bus_machdep = { 0 }; 197 at91bus_tag_t at91bus_tag = 0; 198 199 static int 200 match_cid(void) 201 { 202 uint32_t cidr; 203 int i; 204 205 /* get chip id */ 206 cidr = DBGUREG(DBGU_CIDR); 207 at91_chip_id = cidr; 208 209 /* do we know it? */ 210 for (i = 0; at91_types[i].name; i++) { 211 if (cidr == at91_types[i].cidr) 212 return i; 213 } 214 215 return -1; 216 } 217 218 int 219 at91bus_init(void) 220 { 221 int i = at91_chip_ndx = match_cid(); 222 223 if (i < 0) 224 panic("%s: unknown chip", __FUNCTION__); 225 226 if (!at91_types[i].machdep) 227 panic("%s: %s is not supported", __FUNCTION__, at91_types[i].name); 228 229 memcpy(&at91bus_machdep, at91_types[i].machdep, sizeof(at91bus_machdep)); 230 at91bus_tag = &at91bus_machdep; 231 232 return 0; 233 } 234 235 vaddr_t 236 at91bus_setup(BootConfig *mem) 237 { 238 int loop; 239 int loop1; 240 u_int l1pagetable; 241 242 consinit(); 243 244 #ifdef VERBOSE_INIT_ARM 245 printf("\nNetBSD/AT91 booting ...\n"); 246 #endif 247 248 // setup the CPU / MMU / TLB functions: 249 if (set_cpufuncs()) 250 panic("%s: cpu not recognized", __FUNCTION__); 251 252 #ifdef VERBOSE_INIT_ARM 253 printf("%s: configuring system...\n", __FUNCTION__); 254 #endif 255 256 /* 257 * Setup the variables that define the availability of 258 * physical memory. 259 */ 260 physical_start = mem->dram[0].address; 261 physical_end = mem->dram[0].address + mem->dram[0].pages * PAGE_SIZE; 262 263 physical_freestart = mem->dram[0].address + 0x9000ULL; 264 physical_freeend = KERNEL_BASE_PHYS; 265 physmem = (physical_end - physical_start) / PAGE_SIZE; 266 267 #ifdef VERBOSE_INIT_ARM 268 printf("physmemory: %d pages at 0x%08lx -> 0x%08lx\n", physmem, 269 physical_start, physical_end - 1); 270 #endif 271 272 free_pages = (physical_freeend - physical_freestart) / PAGE_SIZE; 273 274 #ifdef VERBOSE_INIT_ARM 275 printf("freestart = 0x%08lx, free_pages = %d (0x%08x)\n", 276 physical_freestart, free_pages, free_pages); 277 #endif 278 /* Define a macro to simplify memory allocation */ 279 #define valloc_pages(var, np) \ 280 alloc_pages((var).pv_pa, (np)); \ 281 (var).pv_va = KERNEL_BASE + (var).pv_pa - physical_start; 282 283 #define alloc_pages(var, np) \ 284 physical_freeend -= ((np) * PAGE_SIZE); \ 285 if (physical_freeend < physical_freestart) \ 286 panic("initarm: out of memory"); \ 287 (var) = physical_freeend; \ 288 free_pages -= (np); \ 289 memset((char *)(var), 0, ((np) * PAGE_SIZE)); 290 291 loop1 = 0; 292 for (loop = 0; loop <= NUM_KERNEL_PTS; ++loop) { 293 /* Are we 16KB aligned for an L1 ? */ 294 if (((physical_freeend - L1_TABLE_SIZE) & (L1_TABLE_SIZE - 1)) == 0 295 && kernel_l1pt.pv_pa == 0) { 296 valloc_pages(kernel_l1pt, L1_TABLE_SIZE / PAGE_SIZE); 297 } else { 298 valloc_pages(kernel_pt_table[loop1], 299 L2_TABLE_SIZE / PAGE_SIZE); 300 ++loop1; 301 } 302 } 303 304 /* This should never be able to happen but better confirm that. */ 305 if (!kernel_l1pt.pv_pa || (kernel_l1pt.pv_pa & (L1_TABLE_SIZE-1)) != 0) 306 panic("initarm: Failed to align the kernel page directory"); 307 308 /* 309 * Allocate a page for the system vectors page 310 */ 311 valloc_pages(systempage, 1); 312 systempage.pv_va = 0x00000000; 313 314 /* Allocate stacks for all modes */ 315 valloc_pages(irqstack, IRQ_STACK_SIZE); 316 valloc_pages(abtstack, ABT_STACK_SIZE); 317 valloc_pages(undstack, UND_STACK_SIZE); 318 valloc_pages(kernelstack, UPAGES); 319 320 #ifdef VERBOSE_INIT_ARM 321 printf("IRQ stack: p0x%08lx v0x%08lx\n", irqstack.pv_pa, 322 irqstack.pv_va); 323 printf("ABT stack: p0x%08lx v0x%08lx\n", abtstack.pv_pa, 324 abtstack.pv_va); 325 printf("UND stack: p0x%08lx v0x%08lx\n", undstack.pv_pa, 326 undstack.pv_va); 327 printf("SVC stack: p0x%08lx v0x%08lx\n", kernelstack.pv_pa, 328 kernelstack.pv_va); 329 #endif 330 331 alloc_pages(msgbufphys, round_page(MSGBUFSIZE) / PAGE_SIZE); 332 333 /* 334 * Ok we have allocated physical pages for the primary kernel 335 * page tables. Save physical_freeend for when we give whats left 336 * of memory below 2Mbyte to UVM. 337 */ 338 339 physical_freeend_low = physical_freeend; 340 341 #ifdef VERBOSE_INIT_ARM 342 printf("Creating L1 page table at 0x%08lx\n", kernel_l1pt.pv_pa); 343 #endif 344 345 /* 346 * Now we start construction of the L1 page table 347 * We start by mapping the L2 page tables into the L1. 348 * This means that we can replace L1 mappings later on if necessary 349 */ 350 l1pagetable = kernel_l1pt.pv_pa; 351 352 /* Map the L2 pages tables in the L1 page table */ 353 pmap_link_l2pt(l1pagetable, 0x00000000, &kernel_pt_table[KERNEL_PT_SYS]); 354 for (loop = 0; loop < KERNEL_PT_KERNEL_NUM; loop++) 355 pmap_link_l2pt(l1pagetable, KERNEL_BASE + loop * 0x00400000, 356 &kernel_pt_table[KERNEL_PT_KERNEL + loop]); 357 for (loop = 0; loop < KERNEL_PT_VMDATA_NUM; loop++) 358 pmap_link_l2pt(l1pagetable, KERNEL_VM_BASE + loop * 0x00400000, 359 &kernel_pt_table[KERNEL_PT_VMDATA + loop]); 360 361 /* update the top of the kernel VM */ 362 pmap_curmaxkvaddr = 363 KERNEL_VM_BASE + (KERNEL_PT_VMDATA_NUM * 0x00400000); 364 365 #ifdef VERBOSE_INIT_ARM 366 printf("Mapping kernel\n"); 367 #endif 368 369 /* Now we fill in the L2 pagetable for the kernel static code/data */ 370 { 371 extern char etext[], _end[]; 372 size_t textsize = (uintptr_t) etext - KERNEL_TEXT_BASE; 373 size_t totalsize = (uintptr_t) _end - KERNEL_TEXT_BASE; 374 u_int logical; 375 376 textsize = (textsize + PGOFSET) & ~PGOFSET; 377 totalsize = (totalsize + PGOFSET) & ~PGOFSET; 378 379 logical = KERNEL_BASE_PHYS - mem->dram[0].address; /* offset of kernel in RAM */ 380 logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical, 381 physical_start + logical, textsize, 382 VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 383 logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical, 384 physical_start + logical, totalsize - textsize, 385 VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 386 } 387 388 #ifdef VERBOSE_INIT_ARM 389 printf("Constructing L2 page tables\n"); 390 #endif 391 392 /* Map the stack pages */ 393 pmap_map_chunk(l1pagetable, irqstack.pv_va, irqstack.pv_pa, 394 IRQ_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 395 pmap_map_chunk(l1pagetable, abtstack.pv_va, abtstack.pv_pa, 396 ABT_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 397 pmap_map_chunk(l1pagetable, undstack.pv_va, undstack.pv_pa, 398 UND_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 399 pmap_map_chunk(l1pagetable, kernelstack.pv_va, kernelstack.pv_pa, 400 UPAGES * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 401 402 pmap_map_chunk(l1pagetable, kernel_l1pt.pv_va, kernel_l1pt.pv_pa, 403 L1_TABLE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE); 404 405 for (loop = 0; loop < NUM_KERNEL_PTS; ++loop) { 406 pmap_map_chunk(l1pagetable, kernel_pt_table[loop].pv_va, 407 kernel_pt_table[loop].pv_pa, L2_TABLE_SIZE, 408 VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE); 409 } 410 411 /* Map the vector page. */ 412 pmap_map_entry(l1pagetable, ARM_VECTORS_LOW, systempage.pv_pa, 413 VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 414 415 /* Map the statically mapped devices. */ 416 pmap_devmap_bootstrap(l1pagetable, at91_devmap()); 417 418 /* 419 * Update the physical_freestart/physical_freeend/free_pages 420 * variables. 421 */ 422 { 423 extern char _end[]; 424 425 physical_freestart = physical_start + 426 (((((uintptr_t) _end) + PGOFSET) & ~PGOFSET) - 427 KERNEL_BASE); 428 physical_freeend = physical_end; 429 free_pages = 430 (physical_freeend - physical_freestart) / PAGE_SIZE; 431 } 432 433 /* 434 * Now we have the real page tables in place so we can switch to them. 435 * Once this is done we will be running with the REAL kernel page 436 * tables. 437 */ 438 439 /* Switch tables */ 440 #ifdef VERBOSE_INIT_ARM 441 printf("freestart = 0x%08lx, free_pages = %d (0x%x)\n", 442 physical_freestart, free_pages, free_pages); 443 printf("switching to new L1 page table @%#lx...", kernel_l1pt.pv_pa); 444 #endif 445 cpu_domains((DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)) | DOMAIN_CLIENT); 446 cpu_setttb(kernel_l1pt.pv_pa, true); 447 cpu_tlb_flushID(); 448 cpu_domains(DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)); 449 450 /* 451 * Moved from cpu_startup() as data_abort_handler() references 452 * this during uvm init 453 */ 454 uvm_lwp_setuarea(&lwp0, kernelstack.pv_va); 455 456 #ifdef VERBOSE_INIT_ARM 457 printf("done!\n"); 458 #endif 459 460 #ifdef VERBOSE_INIT_ARM 461 printf("bootstrap done.\n"); 462 #endif 463 464 /* @@@@ check this out: @@@ */ 465 arm32_vector_init(ARM_VECTORS_LOW, ARM_VEC_ALL); 466 467 /* 468 * Pages were allocated during the secondary bootstrap for the 469 * stacks for different CPU modes. 470 * We must now set the r13 registers in the different CPU modes to 471 * point to these stacks. 472 * Since the ARM stacks use STMFD etc. we must set r13 to the top end 473 * of the stack memory. 474 */ 475 #ifdef VERBOSE_INIT_ARM 476 printf("init subsystems: stacks "); 477 #endif 478 479 set_stackptr(PSR_IRQ32_MODE, 480 irqstack.pv_va + IRQ_STACK_SIZE * PAGE_SIZE); 481 set_stackptr(PSR_ABT32_MODE, 482 abtstack.pv_va + ABT_STACK_SIZE * PAGE_SIZE); 483 set_stackptr(PSR_UND32_MODE, 484 undstack.pv_va + UND_STACK_SIZE * PAGE_SIZE); 485 486 /* 487 * Well we should set a data abort handler. 488 * Once things get going this will change as we will need a proper 489 * handler. 490 * Until then we will use a handler that just panics but tells us 491 * why. 492 * Initialisation of the vectors will just panic on a data abort. 493 * This just fills in a slightly better one. 494 */ 495 #ifdef VERBOSE_INIT_ARM 496 printf("vectors "); 497 #endif 498 data_abort_handler_address = (u_int)data_abort_handler; 499 prefetch_abort_handler_address = (u_int)prefetch_abort_handler; 500 undefined_handler_address = (u_int)undefinedinstruction_bounce; 501 502 /* Initialise the undefined instruction handlers */ 503 #ifdef VERBOSE_INIT_ARM 504 printf("undefined "); 505 #endif 506 undefined_init(); 507 508 /* Load memory into UVM. */ 509 #ifdef VERBOSE_INIT_ARM 510 printf("page "); 511 #endif 512 uvm_md_init(); 513 uvm_page_physload(atop(physical_freestart), atop(physical_freeend), 514 atop(physical_freestart), atop(physical_freeend), 515 VM_FREELIST_DEFAULT); 516 uvm_page_physload(atop(physical_start), atop(physical_freeend_low), 517 atop(physical_start), atop(physical_freeend_low), 518 VM_FREELIST_DEFAULT); 519 520 /* Boot strap pmap telling it where managed kernel virtual memory is */ 521 #ifdef VERBOSE_INIT_ARM 522 printf("pmap "); 523 #endif 524 pmap_bootstrap(KERNEL_VM_BASE, KERNEL_VM_BASE + KERNEL_VM_SIZE); 525 526 /* Setup the IRQ system */ 527 #ifdef VERBOSE_INIT_ARM 528 printf("irq "); 529 #endif 530 at91_intr_init(); 531 532 #ifdef VERBOSE_INIT_ARM 533 printf("done.\n"); 534 #endif 535 536 #ifdef BOOTHOWTO 537 boothowto = BOOTHOWTO; 538 #endif 539 boothowto = AB_VERBOSE | AB_DEBUG; // @@@@ 540 541 #ifdef DDB 542 db_machine_init(); 543 if (boothowto & RB_KDB) 544 Debugger(); 545 #endif 546 #if 0 547 printf("test data abort...\n"); 548 *((volatile uint32_t*)(0x1234567F)) = 0xdeadbeef; 549 #endif 550 551 #ifdef VERBOSE_INIT_ARM 552 printf("%s: returning new stack pointer 0x%lX\n", __FUNCTION__, (kernelstack.pv_va + USPACE_SVC_STACK_TOP)); 553 #endif 554 555 /* We return the new stack pointer address */ 556 return kernelstack.pv_va + USPACE_SVC_STACK_TOP; 557 } 558 559 static int 560 at91bus_match(device_t parent, cfdata_t match, void *aux) 561 { 562 // we could detect the device here... 563 if (strcmp(match->cf_name, "at91bus") == 0) 564 return 1; 565 return 0; 566 } 567 568 static device_t 569 at91bus_found(device_t self, bus_addr_t addr, int pid) 570 { 571 int locs[AT91BUSCF_NLOCS]; 572 struct at91bus_attach_args sa; 573 struct at91bus_softc *sc; 574 575 memset(&locs, 0, sizeof(locs)); 576 memset(&sa, 0, sizeof(sa)); 577 578 locs[AT91BUSCF_ADDR] = addr; 579 locs[AT91BUSCF_PID] = pid; 580 581 sc = device_private(self); 582 sa.sa_iot = sc->sc_iot; 583 sa.sa_dmat = sc->sc_dmat; 584 sa.sa_addr = addr; 585 sa.sa_size = 1; 586 sa.sa_pid = pid; 587 588 return config_found_sm_loc(self, "at91bus", locs, &sa, 589 at91bus_print, at91bus_submatch); 590 } 591 592 static void 593 at91bus_attach(device_t parent, device_t self, void *aux) 594 { 595 struct at91bus_softc *sc; 596 597 if (at91_chip_ndx < 0) 598 panic("%s: at91bus_init() has not been called!", __FUNCTION__); 599 600 sc = device_private(self); 601 602 /* initialize bus space and bus dma things... */ 603 sc->sc_iot = &at91_bs_tag; 604 sc->sc_dmat = at91_bus_dma_init(&at91_bd_tag); 605 606 if (at91bus_sc == NULL) 607 at91bus_sc = sc; 608 609 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", 610 at91_types[at91_chip_ndx].name, 611 AT91_SCLK / 1000U, AT91_SCLK % 1000U, 612 AT91_MCLK / 1000000U, (AT91_MCLK / 1000U) % 1000U, 613 AT91_PCLK / 1000000U, (AT91_PCLK / 1000U) % 1000U, 614 AT91_MSTCLK / 1000000U, (AT91_MSTCLK / 1000U) % 1000U, 615 AT91_PLLACLK / 1000000U, (AT91_PLLACLK / 1000U) % 1000U, 616 AT91_PLLBCLK / 1000000U, (AT91_PLLBCLK / 1000U) % 1000U); 617 618 /* 619 * Attach devices 620 */ 621 at91_search_peripherals(self, at91bus_found); 622 623 624 struct at91bus_attach_args sa; 625 memset(&sa, 0, sizeof(sa)); 626 sa.sa_iot = sc->sc_iot; 627 sa.sa_dmat = sc->sc_dmat; 628 config_search_ia(at91bus_search, self, "at91bus", &sa); 629 } 630 631 int 632 at91bus_submatch(device_t parent, cfdata_t cf, const int *ldesc, void *aux) 633 { 634 struct at91bus_attach_args *sa = aux; 635 636 if (cf->cf_loc[AT91BUSCF_ADDR] == ldesc[AT91BUSCF_ADDR] 637 && cf->cf_loc[AT91BUSCF_PID] == ldesc[AT91BUSCF_PID]) { 638 sa->sa_addr = cf->cf_loc[AT91BUSCF_ADDR]; 639 sa->sa_size = cf->cf_loc[AT91BUSCF_SIZE]; 640 sa->sa_pid = cf->cf_loc[AT91BUSCF_PID]; 641 return (config_match(parent, cf, aux)); 642 } else 643 return (0); 644 } 645 646 int 647 at91bus_search(device_t parent, cfdata_t cf, const int *ldesc, void *aux) 648 { 649 struct at91bus_attach_args *sa = aux; 650 651 sa->sa_addr = cf->cf_loc[AT91BUSCF_ADDR]; 652 sa->sa_size = cf->cf_loc[AT91BUSCF_SIZE]; 653 sa->sa_pid = cf->cf_loc[AT91BUSCF_PID]; 654 655 if (config_match(parent, cf, aux) > 0) 656 config_attach(parent, cf, aux, at91bus_print); 657 658 return (0); 659 } 660 661 static int 662 at91bus_print(void *aux, const char *name) 663 { 664 struct at91bus_attach_args *sa = (struct at91bus_attach_args*)aux; 665 666 if (name) 667 aprint_normal("%s at %s", sa->sa_pid >= 0 ? at91_peripheral_name(sa->sa_pid) : "device", name); 668 669 if (sa->sa_size) 670 aprint_normal(" at addr 0x%lx", sa->sa_addr); 671 if (sa->sa_size > 1) 672 aprint_normal("-0x%lx", sa->sa_addr + sa->sa_size - 1); 673 if (sa->sa_pid >= 0) 674 aprint_normal(" pid %d", sa->sa_pid); 675 676 return (UNCONF); 677 } 678 679 void consinit(void) 680 { 681 static int consinit_called; 682 683 if (consinit_called != 0) 684 return; 685 686 consinit_called = 1; 687 688 if (at91_chip_ndx < 0) 689 panic("%s: at91_init() has not been called!", __FUNCTION__); 690 691 // call machine specific bus initialization code 692 (*at91bus_tag->init)(&at91bus_clocks); 693 694 // attach console 695 (*at91bus_tag->attach_cn)(&at91_bs_tag, cnspeed, cnmode); 696 } 697