1 /* $NetBSD: at91bus.c,v 1.30 2024/02/20 23:36:01 andvar 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 1.30 2024/02/20 23:36:01 andvar 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 "locators.h" 37 38 /* Define various stack sizes in pages */ 39 #define IRQ_STACK_SIZE 8 40 #define ABT_STACK_SIZE 8 41 #define UND_STACK_SIZE 8 42 43 #include <sys/param.h> 44 #include <sys/device.h> 45 #include <sys/systm.h> 46 #include <sys/kernel.h> 47 #include <sys/exec.h> 48 #include <sys/proc.h> 49 #include <sys/msgbuf.h> 50 #include <sys/reboot.h> 51 #include <sys/termios.h> 52 #include <sys/ksyms.h> 53 #include <sys/bus.h> 54 #include <sys/cpu.h> 55 #include <sys/termios.h> 56 57 #include <uvm/uvm_extern.h> 58 59 #include <dev/cons.h> 60 61 #include <machine/db_machdep.h> 62 #include <ddb/db_sym.h> 63 #include <ddb/db_extern.h> 64 65 #include <arm/locore.h> 66 #include <arm/undefined.h> 67 68 #include <arm/arm32/machdep.h> 69 70 #include <arm/at91/at91var.h> 71 #include <arm/at91/at91busvar.h> 72 #include <arm/at91/at91dbgureg.h> 73 74 #include <machine/bootconfig.h> 75 76 /* console stuff: */ 77 #ifndef CONSPEED 78 #define CONSPEED B115200 79 #endif 80 81 #ifndef CONMODE 82 #define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */ 83 #endif 84 85 int cnspeed = CONSPEED; 86 int cnmode = CONMODE; 87 88 89 /* kernel mapping: */ 90 #define KERNEL_BASE_PHYS 0x20200000 91 #define KERNEL_TEXT_BASE (KERNEL_BASE + 0x00200000) 92 #define KERNEL_VM_BASE (KERNEL_BASE + 0x01000000) 93 #define KERNEL_VM_SIZE 0x0C000000 94 95 96 97 /* boot configuration: */ 98 vaddr_t physical_start; 99 vaddr_t physical_freestart; 100 vaddr_t physical_freeend; 101 vaddr_t physical_freeend_low; 102 vaddr_t physical_end; 103 u_int free_pages; 104 105 paddr_t msgbufphys; 106 107 //static struct arm32_dma_range dma_ranges[4]; 108 109 #define KERNEL_PT_SYS 0 /* L2 table for mapping vectors page */ 110 111 #define KERNEL_PT_KERNEL 1 /* L2 table for mapping kernel */ 112 #define KERNEL_PT_KERNEL_NUM 4 113 /* L2 tables for mapping kernel VM */ 114 #define KERNEL_PT_VMDATA (KERNEL_PT_KERNEL + KERNEL_PT_KERNEL_NUM) 115 116 #define KERNEL_PT_VMDATA_NUM 4 /* start with 16MB of KVM */ 117 #define NUM_KERNEL_PTS (KERNEL_PT_VMDATA + KERNEL_PT_VMDATA_NUM) 118 119 pv_addr_t kernel_pt_table[NUM_KERNEL_PTS]; 120 121 /* prototypes: */ 122 void consinit(void); 123 static int at91bus_match(device_t, cfdata_t, void *); 124 static void at91bus_attach(device_t, device_t, void *); 125 static int at91bus_search(device_t, cfdata_t, 126 const int *, void *); 127 static int at91bus_print(void *, const char *); 128 static int at91bus_submatch(device_t, cfdata_t, 129 const int *, void *); 130 131 132 CFATTACH_DECL_NEW(at91bus, sizeof(struct at91bus_softc), 133 at91bus_match, at91bus_attach, NULL, NULL); 134 135 struct at91bus_clocks at91bus_clocks = {0}; 136 struct at91bus_softc *at91bus_sc = NULL; 137 138 #include "opt_at91types.h" 139 140 #ifdef AT91RM9200 141 #include <arm/at91/at91rm9200busvar.h> 142 #endif 143 144 #ifdef AT91SAM9260 145 #include <arm/at91/at91sam9260busvar.h> 146 #endif 147 148 #ifdef AT91SAM9261 149 #include <arm/at91/at91sam9261busvar.h> 150 #endif 151 152 static const struct { 153 uint32_t cidr; 154 const char * name; 155 const struct at91bus_machdep *machdep; 156 } at91_types[] = { 157 { 158 DBGU_CIDR_AT91RM9200, 159 "AT91RM9200" 160 #ifdef AT91RM9200 161 , &at91rm9200bus 162 #endif 163 }, 164 { 165 DBGU_CIDR_AT91SAM9260, 166 "AT91SAM9260" 167 #ifdef AT91SAM9260 168 , &at91sam9260bus 169 #endif 170 }, 171 { 172 DBGU_CIDR_AT91SAM9260, 173 "AT91SAM9261" 174 #ifdef AT91SAM9261 175 , &at91sam9261bus 176 #endif 177 }, 178 { 179 DBGU_CIDR_AT91SAM9263, 180 "AT91SAM9263" 181 }, 182 { 183 0, 184 0, 185 0 186 } 187 }; 188 189 uint32_t at91_chip_id; 190 static int at91_chip_ndx = -1; 191 struct at91bus_machdep at91bus_machdep = { 0 }; 192 at91bus_tag_t at91bus_tag = 0; 193 194 static int 195 match_cid(void) 196 { 197 uint32_t cidr; 198 int i; 199 200 /* get chip id */ 201 cidr = DBGUREG(DBGU_CIDR); 202 at91_chip_id = cidr; 203 204 /* do we know it? */ 205 for (i = 0; at91_types[i].name; i++) { 206 if (cidr == at91_types[i].cidr) 207 return i; 208 } 209 210 return -1; 211 } 212 213 int 214 at91bus_init(void) 215 { 216 int i = at91_chip_ndx = match_cid(); 217 218 if (i < 0) 219 panic("%s: unknown chip", __FUNCTION__); 220 221 if (!at91_types[i].machdep) 222 panic("%s: %s is not supported", __FUNCTION__, at91_types[i].name); 223 224 memcpy(&at91bus_machdep, at91_types[i].machdep, sizeof(at91bus_machdep)); 225 at91bus_tag = &at91bus_machdep; 226 227 return 0; 228 } 229 230 vaddr_t 231 at91bus_setup(BootConfig *mem) 232 { 233 int loop; 234 int loop1; 235 u_int l1pagetable; 236 237 consinit(); 238 239 #ifdef VERBOSE_INIT_ARM 240 printf("\nNetBSD/AT91 booting ...\n"); 241 #endif 242 243 // setup the CPU / MMU / TLB functions: 244 if (set_cpufuncs()) 245 panic("%s: cpu not recognized", __FUNCTION__); 246 247 #ifdef VERBOSE_INIT_ARM 248 printf("%s: configuring system...\n", __FUNCTION__); 249 #endif 250 251 /* 252 * Setup the variables that define the availability of 253 * physical memory. 254 */ 255 physical_start = mem->dram[0].address; 256 physical_end = mem->dram[0].address + mem->dram[0].pages * PAGE_SIZE; 257 258 physical_freestart = mem->dram[0].address + 0x9000ULL; 259 physical_freeend = KERNEL_BASE_PHYS; 260 physmem = (physical_end - physical_start) / PAGE_SIZE; 261 262 #ifdef VERBOSE_INIT_ARM 263 printf("physmemory: 0x%"PRIxPSIZE" pages at 0x%08lx -> 0x%08lx\n", physmem, 264 physical_start, physical_end - 1); 265 #endif 266 267 free_pages = (physical_freeend - physical_freestart) / PAGE_SIZE; 268 269 #ifdef VERBOSE_INIT_ARM 270 printf("freestart = 0x%08lx, free_pages = %d (0x%08x)\n", 271 physical_freestart, free_pages, free_pages); 272 #endif 273 /* Define a macro to simplify memory allocation */ 274 #define valloc_pages(var, np) \ 275 alloc_pages((var).pv_pa, (np)); \ 276 (var).pv_va = KERNEL_BASE + (var).pv_pa - physical_start; 277 278 #define alloc_pages(var, np) \ 279 physical_freeend -= ((np) * PAGE_SIZE); \ 280 if (physical_freeend < physical_freestart) \ 281 panic("initarm: out of memory"); \ 282 (var) = physical_freeend; \ 283 free_pages -= (np); \ 284 memset((char *)(var), 0, ((np) * PAGE_SIZE)); 285 286 loop1 = 0; 287 for (loop = 0; loop <= NUM_KERNEL_PTS; ++loop) { 288 /* Are we 16KB aligned for an L1 ? */ 289 if (((physical_freeend - L1_TABLE_SIZE) & (L1_TABLE_SIZE - 1)) == 0 290 && kernel_l1pt.pv_pa == 0) { 291 valloc_pages(kernel_l1pt, L1_TABLE_SIZE / PAGE_SIZE); 292 } else { 293 valloc_pages(kernel_pt_table[loop1], 294 L2_TABLE_SIZE / PAGE_SIZE); 295 ++loop1; 296 } 297 } 298 299 /* This should never be able to happen but better confirm that. */ 300 if (!kernel_l1pt.pv_pa || (kernel_l1pt.pv_pa & (L1_TABLE_SIZE-1)) != 0) 301 panic("initarm: Failed to align the kernel page directory"); 302 303 /* 304 * Allocate a page for the system vectors page 305 */ 306 valloc_pages(systempage, 1); 307 systempage.pv_va = 0x00000000; 308 309 /* Allocate stacks for all modes */ 310 valloc_pages(irqstack, IRQ_STACK_SIZE); 311 valloc_pages(abtstack, ABT_STACK_SIZE); 312 valloc_pages(undstack, UND_STACK_SIZE); 313 valloc_pages(kernelstack, UPAGES); 314 315 #ifdef VERBOSE_INIT_ARM 316 printf("IRQ stack: p0x%08lx v0x%08lx\n", irqstack.pv_pa, 317 irqstack.pv_va); 318 printf("ABT stack: p0x%08lx v0x%08lx\n", abtstack.pv_pa, 319 abtstack.pv_va); 320 printf("UND stack: p0x%08lx v0x%08lx\n", undstack.pv_pa, 321 undstack.pv_va); 322 printf("SVC stack: p0x%08lx v0x%08lx\n", kernelstack.pv_pa, 323 kernelstack.pv_va); 324 #endif 325 326 alloc_pages(msgbufphys, round_page(MSGBUFSIZE) / PAGE_SIZE); 327 328 /* 329 * Ok we have allocated physical pages for the primary kernel 330 * page tables. Save physical_freeend for when we give whats left 331 * of memory below 2Mbyte to UVM. 332 */ 333 334 physical_freeend_low = physical_freeend; 335 336 #ifdef VERBOSE_INIT_ARM 337 printf("Creating L1 page table at 0x%08lx\n", kernel_l1pt.pv_pa); 338 #endif 339 340 /* 341 * Now we start construction of the L1 page table 342 * We start by mapping the L2 page tables into the L1. 343 * This means that we can replace L1 mappings later on if necessary 344 */ 345 l1pagetable = kernel_l1pt.pv_pa; 346 347 /* Map the L2 pages tables in the L1 page table */ 348 pmap_link_l2pt(l1pagetable, 0x00000000, &kernel_pt_table[KERNEL_PT_SYS]); 349 for (loop = 0; loop < KERNEL_PT_KERNEL_NUM; loop++) 350 pmap_link_l2pt(l1pagetable, KERNEL_BASE + loop * 0x00400000, 351 &kernel_pt_table[KERNEL_PT_KERNEL + loop]); 352 for (loop = 0; loop < KERNEL_PT_VMDATA_NUM; loop++) 353 pmap_link_l2pt(l1pagetable, KERNEL_VM_BASE + loop * 0x00400000, 354 &kernel_pt_table[KERNEL_PT_VMDATA + loop]); 355 356 /* update the top of the kernel VM */ 357 pmap_curmaxkvaddr = 358 KERNEL_VM_BASE + (KERNEL_PT_VMDATA_NUM * 0x00400000); 359 360 #ifdef VERBOSE_INIT_ARM 361 printf("Mapping kernel\n"); 362 #endif 363 364 /* Now we fill in the L2 pagetable for the kernel static code/data */ 365 { 366 extern char etext[], _end[]; 367 size_t textsize = (uintptr_t) etext - KERNEL_TEXT_BASE; 368 size_t totalsize = (uintptr_t) _end - KERNEL_TEXT_BASE; 369 u_int logical; 370 371 textsize = (textsize + PGOFSET) & ~PGOFSET; 372 totalsize = (totalsize + PGOFSET) & ~PGOFSET; 373 374 logical = KERNEL_BASE_PHYS - mem->dram[0].address; /* offset of kernel in RAM */ 375 logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical, 376 physical_start + logical, textsize, 377 VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 378 logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical, 379 physical_start + logical, totalsize - textsize, 380 VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 381 } 382 383 #ifdef VERBOSE_INIT_ARM 384 printf("Constructing L2 page tables\n"); 385 #endif 386 387 /* Map the stack pages */ 388 pmap_map_chunk(l1pagetable, irqstack.pv_va, irqstack.pv_pa, 389 IRQ_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 390 pmap_map_chunk(l1pagetable, abtstack.pv_va, abtstack.pv_pa, 391 ABT_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 392 pmap_map_chunk(l1pagetable, undstack.pv_va, undstack.pv_pa, 393 UND_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 394 pmap_map_chunk(l1pagetable, kernelstack.pv_va, kernelstack.pv_pa, 395 UPAGES * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 396 397 pmap_map_chunk(l1pagetable, kernel_l1pt.pv_va, kernel_l1pt.pv_pa, 398 L1_TABLE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE); 399 400 for (loop = 0; loop < NUM_KERNEL_PTS; ++loop) { 401 pmap_map_chunk(l1pagetable, kernel_pt_table[loop].pv_va, 402 kernel_pt_table[loop].pv_pa, L2_TABLE_SIZE, 403 VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE); 404 } 405 406 /* Map the vector page. */ 407 pmap_map_entry(l1pagetable, ARM_VECTORS_LOW, systempage.pv_pa, 408 VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 409 410 /* Map the statically mapped devices. */ 411 pmap_devmap_bootstrap(l1pagetable, at91_devmap()); 412 413 /* 414 * Update the physical_freestart/physical_freeend/free_pages 415 * variables. 416 */ 417 { 418 extern char _end[]; 419 420 physical_freestart = physical_start + 421 (((((uintptr_t) _end) + PGOFSET) & ~PGOFSET) - 422 KERNEL_BASE); 423 physical_freeend = physical_end; 424 free_pages = 425 (physical_freeend - physical_freestart) / PAGE_SIZE; 426 } 427 428 /* 429 * Now we have the real page tables in place so we can switch to them. 430 * Once this is done we will be running with the REAL kernel page 431 * tables. 432 */ 433 434 /* Switch tables */ 435 #ifdef VERBOSE_INIT_ARM 436 printf("freestart = 0x%08lx, free_pages = %d (0x%x)\n", 437 physical_freestart, free_pages, free_pages); 438 printf("switching to new L1 page table @%#lx...", kernel_l1pt.pv_pa); 439 #endif 440 cpu_domains((DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)) | DOMAIN_CLIENT); 441 cpu_setttb(kernel_l1pt.pv_pa, true); 442 cpu_tlb_flushID(); 443 cpu_domains(DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)); 444 445 /* 446 * Moved from cpu_startup() as data_abort_handler() references 447 * this during uvm init 448 */ 449 uvm_lwp_setuarea(&lwp0, kernelstack.pv_va); 450 451 #ifdef VERBOSE_INIT_ARM 452 printf("done!\n"); 453 #endif 454 455 #ifdef VERBOSE_INIT_ARM 456 printf("bootstrap done.\n"); 457 #endif 458 459 /* @@@@ check this out: @@@ */ 460 arm32_vector_init(ARM_VECTORS_LOW, ARM_VEC_ALL); 461 462 /* 463 * Pages were allocated during the secondary bootstrap for the 464 * stacks for different CPU modes. 465 * We must now set the r13 registers in the different CPU modes to 466 * point to these stacks. 467 * Since the ARM stacks use STMFD etc. we must set r13 to the top end 468 * of the stack memory. 469 */ 470 #ifdef VERBOSE_INIT_ARM 471 printf("init subsystems: stacks "); 472 #endif 473 474 set_stackptr(PSR_IRQ32_MODE, 475 irqstack.pv_va + IRQ_STACK_SIZE * PAGE_SIZE); 476 set_stackptr(PSR_ABT32_MODE, 477 abtstack.pv_va + ABT_STACK_SIZE * PAGE_SIZE); 478 set_stackptr(PSR_UND32_MODE, 479 undstack.pv_va + UND_STACK_SIZE * PAGE_SIZE); 480 481 /* 482 * Well we should set a data abort handler. 483 * Once things get going this will change as we will need a proper 484 * handler. 485 * Until then we will use a handler that just panics but tells us 486 * why. 487 * Initialisation of the vectors will just panic on a data abort. 488 * This just fills in a slightly better one. 489 */ 490 #ifdef VERBOSE_INIT_ARM 491 printf("vectors "); 492 #endif 493 data_abort_handler_address = (u_int)data_abort_handler; 494 prefetch_abort_handler_address = (u_int)prefetch_abort_handler; 495 undefined_handler_address = (u_int)undefinedinstruction_bounce; 496 497 /* Initialise the undefined instruction handlers */ 498 #ifdef VERBOSE_INIT_ARM 499 printf("undefined "); 500 #endif 501 undefined_init(); 502 503 /* Load memory into UVM. */ 504 #ifdef VERBOSE_INIT_ARM 505 printf("page "); 506 #endif 507 uvm_md_init(); 508 uvm_page_physload(atop(physical_freestart), atop(physical_freeend), 509 atop(physical_freestart), atop(physical_freeend), 510 VM_FREELIST_DEFAULT); 511 uvm_page_physload(atop(physical_start), atop(physical_freeend_low), 512 atop(physical_start), atop(physical_freeend_low), 513 VM_FREELIST_DEFAULT); 514 515 /* Boot strap pmap telling it where managed kernel virtual memory is */ 516 #ifdef VERBOSE_INIT_ARM 517 printf("pmap "); 518 #endif 519 pmap_bootstrap(KERNEL_VM_BASE, KERNEL_VM_BASE + KERNEL_VM_SIZE); 520 521 /* Setup the IRQ system */ 522 #ifdef VERBOSE_INIT_ARM 523 printf("irq "); 524 #endif 525 at91_intr_init(); 526 527 #ifdef VERBOSE_INIT_ARM 528 printf("done.\n"); 529 #endif 530 531 #ifdef BOOTHOWTO 532 boothowto = BOOTHOWTO; 533 #endif 534 boothowto = AB_VERBOSE | AB_DEBUG; // @@@@ 535 536 #ifdef DDB 537 db_machine_init(); 538 if (boothowto & RB_KDB) 539 Debugger(); 540 #endif 541 #if 0 542 printf("test data abort...\n"); 543 *((volatile uint32_t*)(0x1234567F)) = 0xdeadbeef; 544 #endif 545 546 #ifdef VERBOSE_INIT_ARM 547 printf("%s: returning new stack pointer 0x%lX\n", __FUNCTION__, (kernelstack.pv_va + USPACE_SVC_STACK_TOP)); 548 #endif 549 550 /* We return the new stack pointer address */ 551 return kernelstack.pv_va + USPACE_SVC_STACK_TOP; 552 } 553 554 static int 555 at91bus_match(device_t parent, cfdata_t match, void *aux) 556 { 557 // we could detect the device here... 558 if (strcmp(match->cf_name, "at91bus") == 0) 559 return 1; 560 return 0; 561 } 562 563 static device_t 564 at91bus_found(device_t self, bus_addr_t addr, int pid) 565 { 566 int locs[AT91BUSCF_NLOCS]; 567 struct at91bus_attach_args sa; 568 struct at91bus_softc *sc; 569 570 memset(&locs, 0, sizeof(locs)); 571 memset(&sa, 0, sizeof(sa)); 572 573 locs[AT91BUSCF_ADDR] = addr; 574 locs[AT91BUSCF_PID] = pid; 575 576 sc = device_private(self); 577 sa.sa_iot = sc->sc_iot; 578 sa.sa_dmat = sc->sc_dmat; 579 sa.sa_addr = addr; 580 sa.sa_size = 1; 581 sa.sa_pid = pid; 582 583 return config_found(self, &sa, at91bus_print, 584 CFARGS(.submatch = at91bus_submatch, 585 .locators = locs)); 586 } 587 588 static void 589 at91bus_attach(device_t parent, device_t self, void *aux) 590 { 591 struct at91bus_softc *sc; 592 593 if (at91_chip_ndx < 0) 594 panic("%s: at91bus_init() has not been called!", __FUNCTION__); 595 596 sc = device_private(self); 597 598 /* initialize bus space and bus dma things... */ 599 sc->sc_iot = &at91_bs_tag; 600 sc->sc_dmat = at91_bus_dma_init(&at91_bd_tag); 601 602 if (at91bus_sc == NULL) 603 at91bus_sc = sc; 604 605 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", 606 at91_types[at91_chip_ndx].name, 607 AT91_SCLK / 1000U, AT91_SCLK % 1000U, 608 AT91_MCLK / 1000000U, (AT91_MCLK / 1000U) % 1000U, 609 AT91_PCLK / 1000000U, (AT91_PCLK / 1000U) % 1000U, 610 AT91_MSTCLK / 1000000U, (AT91_MSTCLK / 1000U) % 1000U, 611 AT91_PLLACLK / 1000000U, (AT91_PLLACLK / 1000U) % 1000U, 612 AT91_PLLBCLK / 1000000U, (AT91_PLLBCLK / 1000U) % 1000U); 613 614 /* 615 * Attach devices 616 */ 617 at91_search_peripherals(self, at91bus_found); 618 619 620 struct at91bus_attach_args sa; 621 memset(&sa, 0, sizeof(sa)); 622 sa.sa_iot = sc->sc_iot; 623 sa.sa_dmat = sc->sc_dmat; 624 config_search(self, &sa, 625 CFARGS(.search = at91bus_search)); 626 } 627 628 int 629 at91bus_submatch(device_t parent, cfdata_t cf, const int *ldesc, void *aux) 630 { 631 struct at91bus_attach_args *sa = aux; 632 633 if (cf->cf_loc[AT91BUSCF_ADDR] == ldesc[AT91BUSCF_ADDR] 634 && cf->cf_loc[AT91BUSCF_PID] == ldesc[AT91BUSCF_PID]) { 635 sa->sa_addr = cf->cf_loc[AT91BUSCF_ADDR]; 636 sa->sa_size = cf->cf_loc[AT91BUSCF_SIZE]; 637 sa->sa_pid = cf->cf_loc[AT91BUSCF_PID]; 638 return (config_match(parent, cf, aux)); 639 } else 640 return (0); 641 } 642 643 int 644 at91bus_search(device_t parent, cfdata_t cf, const int *ldesc, void *aux) 645 { 646 struct at91bus_attach_args *sa = aux; 647 648 sa->sa_addr = cf->cf_loc[AT91BUSCF_ADDR]; 649 sa->sa_size = cf->cf_loc[AT91BUSCF_SIZE]; 650 sa->sa_pid = cf->cf_loc[AT91BUSCF_PID]; 651 652 if (config_probe(parent, cf, aux)) 653 config_attach(parent, cf, aux, at91bus_print, CFARGS_NONE); 654 655 return (0); 656 } 657 658 static int 659 at91bus_print(void *aux, const char *name) 660 { 661 struct at91bus_attach_args *sa = (struct at91bus_attach_args*)aux; 662 663 if (name) 664 aprint_normal("%s at %s", sa->sa_pid >= 0 ? at91_peripheral_name(sa->sa_pid) : "device", name); 665 666 if (sa->sa_size) 667 aprint_normal(" at addr 0x%lx", sa->sa_addr); 668 if (sa->sa_size > 1) 669 aprint_normal("-0x%lx", sa->sa_addr + sa->sa_size - 1); 670 if (sa->sa_pid >= 0) 671 aprint_normal(" pid %d", sa->sa_pid); 672 673 return (UNCONF); 674 } 675 676 void consinit(void) 677 { 678 static int consinit_called; 679 680 if (consinit_called != 0) 681 return; 682 683 consinit_called = 1; 684 685 if (at91_chip_ndx < 0) 686 panic("%s: at91_init() has not been called!", __FUNCTION__); 687 688 // call machine specific bus initialization code 689 (*at91bus_tag->init)(&at91bus_clocks); 690 691 // attach console 692 (*at91bus_tag->attach_cn)(&at91_bs_tag, cnspeed, cnmode); 693 } 694
Indexes created Sun Sep 21 16:09:51 GMT 2025