1 /* $NetBSD: at91bus.c,v 1.16 2012/11/12 18:00:36 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 1.16 2012/11/12 18:00:36 skrll Exp $"); 31 32 #include "opt_ddb.h" 33 #include "opt_kgdb.h" 34 #include "opt_pmap_debug.h" 35 36 /* Define various stack sizes in pages */ 37 #define IRQ_STACK_SIZE 8 38 #define ABT_STACK_SIZE 8 39 #ifdef IPKDB 40 #define UND_STACK_SIZE 16 41 #else 42 #define UND_STACK_SIZE 8 43 #endif 44 45 #include <sys/param.h> 46 #include <sys/device.h> 47 #include <sys/systm.h> 48 #include <sys/kernel.h> 49 #include <sys/exec.h> 50 #include <sys/proc.h> 51 #include <sys/msgbuf.h> 52 #include <sys/reboot.h> 53 #include <sys/termios.h> 54 #include <sys/ksyms.h> 55 56 #include <machine/bootconfig.h> 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 <sys/bus.h> 66 #include <machine/cpu.h> 67 #include <machine/frame.h> 68 #include <arm/undefined.h> 69 70 #include <arm/arm32/machdep.h> 71 #include <arm/cpufunc.h> 72 73 #include <arm/at91/at91var.h> 74 #include <arm/at91/at91busvar.h> 75 #include <arm/at91/at91dbgureg.h> 76 77 //#include <dev/cons.h> 78 #include <sys/termios.h> 79 80 #include "locators.h" 81 82 /* console stuff: */ 83 #ifndef CONSPEED 84 #define CONSPEED B115200 85 #endif 86 87 #ifndef CONMODE 88 #define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */ 89 #endif 90 91 int cnspeed = CONSPEED; 92 int cnmode = CONMODE; 93 94 95 /* kernel mapping: */ 96 #define KERNEL_BASE_PHYS 0x20200000 97 #define KERNEL_TEXT_BASE (KERNEL_BASE + 0x00200000) 98 #define KERNEL_VM_BASE (KERNEL_BASE + 0x01000000) 99 #define KERNEL_VM_SIZE 0x0C000000 100 101 102 103 /* boot configuration: */ 104 vm_offset_t physical_start; 105 vm_offset_t physical_freestart; 106 vm_offset_t physical_freeend; 107 vm_offset_t physical_freeend_low; 108 vm_offset_t physical_end; 109 u_int free_pages; 110 111 vm_offset_t msgbufphys; 112 113 //static struct arm32_dma_range dma_ranges[4]; 114 115 #ifdef PMAP_DEBUG 116 extern int pmap_debug_level; 117 #endif 118 119 #define KERNEL_PT_SYS 0 /* L2 table for mapping vectors page */ 120 121 #define KERNEL_PT_KERNEL 1 /* L2 table for mapping kernel */ 122 #define KERNEL_PT_KERNEL_NUM 4 123 /* L2 tables for mapping kernel VM */ 124 #define KERNEL_PT_VMDATA (KERNEL_PT_KERNEL + KERNEL_PT_KERNEL_NUM) 125 126 #define KERNEL_PT_VMDATA_NUM 4 /* start with 16MB of KVM */ 127 #define NUM_KERNEL_PTS (KERNEL_PT_VMDATA + KERNEL_PT_VMDATA_NUM) 128 129 pv_addr_t kernel_pt_table[NUM_KERNEL_PTS]; 130 131 /* prototypes: */ 132 void consinit(void); 133 static int at91bus_match(device_t, cfdata_t, void *); 134 static void at91bus_attach(device_t, device_t, void *); 135 static int at91bus_search(device_t, cfdata_t, 136 const int *, void *); 137 static int at91bus_print(void *, const char *); 138 static int at91bus_submatch(device_t, cfdata_t, 139 const int *, void *); 140 141 142 CFATTACH_DECL_NEW(at91bus, sizeof(struct at91bus_softc), 143 at91bus_match, at91bus_attach, NULL, NULL); 144 145 struct at91bus_clocks at91bus_clocks = {0}; 146 struct at91bus_softc *at91bus_sc = NULL; 147 148 #include "opt_at91types.h" 149 150 #ifdef AT91RM9200 151 #include <arm/at91/at91rm9200busvar.h> 152 #endif 153 154 #ifdef AT91SAM9260 155 #include <arm/at91/at91sam9260busvar.h> 156 #endif 157 158 #ifdef AT91SAM9261 159 #include <arm/at91/at91sam9261busvar.h> 160 #endif 161 162 static const struct { 163 uint32_t cidr; 164 const char * name; 165 const struct at91bus_machdep *machdep; 166 } at91_types[] = { 167 { 168 DBGU_CIDR_AT91RM9200, 169 "AT91RM9200" 170 #ifdef AT91RM9200 171 , &at91rm9200bus 172 #endif 173 }, 174 { 175 DBGU_CIDR_AT91SAM9260, 176 "AT91SAM9260" 177 #ifdef AT91SAM9260 178 , &at91sam9260bus 179 #endif 180 }, 181 { 182 DBGU_CIDR_AT91SAM9260, 183 "AT91SAM9261" 184 #ifdef AT91SAM9261 185 , &at91sam9261bus 186 #endif 187 }, 188 { 189 DBGU_CIDR_AT91SAM9263, 190 "AT91SAM9263" 191 }, 192 { 193 0, 194 0, 195 0 196 } 197 }; 198 199 uint32_t at91_chip_id; 200 static int at91_chip_ndx = -1; 201 struct at91bus_machdep at91bus_machdep = { 0 }; 202 at91bus_tag_t at91bus_tag = 0; 203 204 static int 205 match_cid(void) 206 { 207 uint32_t cidr; 208 int i; 209 210 /* get chip id */ 211 cidr = DBGUREG(DBGU_CIDR); 212 at91_chip_id = cidr; 213 214 /* do we know it? */ 215 for (i = 0; at91_types[i].name; i++) { 216 if (cidr == at91_types[i].cidr) 217 return i; 218 } 219 220 return -1; 221 } 222 223 int 224 at91bus_init(void) 225 { 226 int i = at91_chip_ndx = match_cid(); 227 228 if (i < 0) 229 panic("%s: unknown chip", __FUNCTION__); 230 231 if (!at91_types[i].machdep) 232 panic("%s: %s is not supported", __FUNCTION__, at91_types[i].name); 233 234 memcpy(&at91bus_machdep, at91_types[i].machdep, sizeof(at91bus_machdep)); 235 at91bus_tag = &at91bus_machdep; 236 237 return 0; 238 } 239 240 u_int 241 at91bus_setup(BootConfig *mem) 242 { 243 int loop; 244 int loop1; 245 u_int l1pagetable; 246 247 consinit(); 248 249 #ifdef VERBOSE_INIT_ARM 250 printf("\nNetBSD/AT91 booting ...\n"); 251 #endif 252 253 // setup the CPU / MMU / TLB functions: 254 if (set_cpufuncs()) 255 panic("%s: cpu not recognized", __FUNCTION__); 256 257 #ifdef VERBOSE_INIT_ARM 258 printf("%s: configuring system...\n", __FUNCTION__); 259 #endif 260 261 /* 262 * Setup the variables that define the availability of 263 * physical memory. 264 */ 265 physical_start = mem->dram[0].address; 266 physical_end = mem->dram[0].address + mem->dram[0].pages * PAGE_SIZE; 267 268 physical_freestart = mem->dram[0].address + 0x9000ULL; 269 physical_freeend = KERNEL_BASE_PHYS; 270 physmem = (physical_end - physical_start) / PAGE_SIZE; 271 272 #ifdef VERBOSE_INIT_ARM 273 printf("physmemory: %d pages at 0x%08lx -> 0x%08lx\n", physmem, 274 physical_start, physical_end - 1); 275 #endif 276 277 free_pages = (physical_freeend - physical_freestart) / PAGE_SIZE; 278 279 #ifdef VERBOSE_INIT_ARM 280 printf("freestart = 0x%08lx, free_pages = %d (0x%08x)\n", 281 physical_freestart, free_pages, free_pages); 282 #endif 283 /* Define a macro to simplify memory allocation */ 284 #define valloc_pages(var, np) \ 285 alloc_pages((var).pv_pa, (np)); \ 286 (var).pv_va = KERNEL_BASE + (var).pv_pa - physical_start; 287 288 #define alloc_pages(var, np) \ 289 physical_freeend -= ((np) * PAGE_SIZE); \ 290 if (physical_freeend < physical_freestart) \ 291 panic("initarm: out of memory"); \ 292 (var) = physical_freeend; \ 293 free_pages -= (np); \ 294 memset((char *)(var), 0, ((np) * PAGE_SIZE)); 295 296 loop1 = 0; 297 for (loop = 0; loop <= NUM_KERNEL_PTS; ++loop) { 298 /* Are we 16KB aligned for an L1 ? */ 299 if (((physical_freeend - L1_TABLE_SIZE) & (L1_TABLE_SIZE - 1)) == 0 300 && kernel_l1pt.pv_pa == 0) { 301 valloc_pages(kernel_l1pt, L1_TABLE_SIZE / PAGE_SIZE); 302 } else { 303 valloc_pages(kernel_pt_table[loop1], 304 L2_TABLE_SIZE / PAGE_SIZE); 305 ++loop1; 306 } 307 } 308 309 /* This should never be able to happen but better confirm that. */ 310 if (!kernel_l1pt.pv_pa || (kernel_l1pt.pv_pa & (L1_TABLE_SIZE-1)) != 0) 311 panic("initarm: Failed to align the kernel page directory"); 312 313 /* 314 * Allocate a page for the system vectors page 315 */ 316 valloc_pages(systempage, 1); 317 systempage.pv_va = 0x00000000; 318 319 /* Allocate stacks for all modes */ 320 valloc_pages(irqstack, IRQ_STACK_SIZE); 321 valloc_pages(abtstack, ABT_STACK_SIZE); 322 valloc_pages(undstack, UND_STACK_SIZE); 323 valloc_pages(kernelstack, UPAGES); 324 325 #ifdef VERBOSE_INIT_ARM 326 printf("IRQ stack: p0x%08lx v0x%08lx\n", irqstack.pv_pa, 327 irqstack.pv_va); 328 printf("ABT stack: p0x%08lx v0x%08lx\n", abtstack.pv_pa, 329 abtstack.pv_va); 330 printf("UND stack: p0x%08lx v0x%08lx\n", undstack.pv_pa, 331 undstack.pv_va); 332 printf("SVC stack: p0x%08lx v0x%08lx\n", kernelstack.pv_pa, 333 kernelstack.pv_va); 334 #endif 335 336 alloc_pages(msgbufphys, round_page(MSGBUFSIZE) / PAGE_SIZE); 337 338 /* 339 * Ok we have allocated physical pages for the primary kernel 340 * page tables. Save physical_freeend for when we give whats left 341 * of memory below 2Mbyte to UVM. 342 */ 343 344 physical_freeend_low = physical_freeend; 345 346 #ifdef VERBOSE_INIT_ARM 347 printf("Creating L1 page table at 0x%08lx\n", kernel_l1pt.pv_pa); 348 #endif 349 350 /* 351 * Now we start construction of the L1 page table 352 * We start by mapping the L2 page tables into the L1. 353 * This means that we can replace L1 mappings later on if necessary 354 */ 355 l1pagetable = kernel_l1pt.pv_pa; 356 357 /* Map the L2 pages tables in the L1 page table */ 358 pmap_link_l2pt(l1pagetable, 0x00000000, &kernel_pt_table[KERNEL_PT_SYS]); 359 for (loop = 0; loop < KERNEL_PT_KERNEL_NUM; loop++) 360 pmap_link_l2pt(l1pagetable, KERNEL_BASE + loop * 0x00400000, 361 &kernel_pt_table[KERNEL_PT_KERNEL + loop]); 362 for (loop = 0; loop < KERNEL_PT_VMDATA_NUM; loop++) 363 pmap_link_l2pt(l1pagetable, KERNEL_VM_BASE + loop * 0x00400000, 364 &kernel_pt_table[KERNEL_PT_VMDATA + loop]); 365 366 /* update the top of the kernel VM */ 367 pmap_curmaxkvaddr = 368 KERNEL_VM_BASE + (KERNEL_PT_VMDATA_NUM * 0x00400000); 369 370 #ifdef VERBOSE_INIT_ARM 371 printf("Mapping kernel\n"); 372 #endif 373 374 /* Now we fill in the L2 pagetable for the kernel static code/data */ 375 { 376 extern char etext[], _end[]; 377 size_t textsize = (uintptr_t) etext - KERNEL_TEXT_BASE; 378 size_t totalsize = (uintptr_t) _end - KERNEL_TEXT_BASE; 379 u_int logical; 380 381 textsize = (textsize + PGOFSET) & ~PGOFSET; 382 totalsize = (totalsize + PGOFSET) & ~PGOFSET; 383 384 logical = KERNEL_BASE_PHYS - mem->dram[0].address; /* offset of kernel in RAM */ 385 logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical, 386 physical_start + logical, textsize, 387 VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 388 logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical, 389 physical_start + logical, totalsize - textsize, 390 VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 391 } 392 393 #ifdef VERBOSE_INIT_ARM 394 printf("Constructing L2 page tables\n"); 395 #endif 396 397 /* Map the stack pages */ 398 pmap_map_chunk(l1pagetable, irqstack.pv_va, irqstack.pv_pa, 399 IRQ_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 400 pmap_map_chunk(l1pagetable, abtstack.pv_va, abtstack.pv_pa, 401 ABT_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 402 pmap_map_chunk(l1pagetable, undstack.pv_va, undstack.pv_pa, 403 UND_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 404 pmap_map_chunk(l1pagetable, kernelstack.pv_va, kernelstack.pv_pa, 405 UPAGES * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 406 407 pmap_map_chunk(l1pagetable, kernel_l1pt.pv_va, kernel_l1pt.pv_pa, 408 L1_TABLE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE); 409 410 for (loop = 0; loop < NUM_KERNEL_PTS; ++loop) { 411 pmap_map_chunk(l1pagetable, kernel_pt_table[loop].pv_va, 412 kernel_pt_table[loop].pv_pa, L2_TABLE_SIZE, 413 VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE); 414 } 415 416 /* Map the vector page. */ 417 pmap_map_entry(l1pagetable, ARM_VECTORS_LOW, systempage.pv_pa, 418 VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 419 420 /* Map the statically mapped devices. */ 421 pmap_devmap_bootstrap(l1pagetable, at91_devmap()); 422 423 /* 424 * Update the physical_freestart/physical_freeend/free_pages 425 * variables. 426 */ 427 { 428 extern char _end[]; 429 430 physical_freestart = physical_start + 431 (((((uintptr_t) _end) + PGOFSET) & ~PGOFSET) - 432 KERNEL_BASE); 433 physical_freeend = physical_end; 434 free_pages = 435 (physical_freeend - physical_freestart) / PAGE_SIZE; 436 } 437 438 /* 439 * Now we have the real page tables in place so we can switch to them. 440 * Once this is done we will be running with the REAL kernel page 441 * tables. 442 */ 443 444 /* Switch tables */ 445 #ifdef VERBOSE_INIT_ARM 446 printf("freestart = 0x%08lx, free_pages = %d (0x%x)\n", 447 physical_freestart, free_pages, free_pages); 448 printf("switching to new L1 page table @%#lx...", kernel_l1pt.pv_pa); 449 #endif 450 cpu_domains((DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)) | DOMAIN_CLIENT); 451 cpu_setttb(kernel_l1pt.pv_pa, true); 452 cpu_tlb_flushID(); 453 cpu_domains(DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)); 454 455 /* 456 * Moved from cpu_startup() as data_abort_handler() references 457 * this during uvm init 458 */ 459 uvm_lwp_setuarea(&lwp0, kernelstack.pv_va); 460 461 #ifdef VERBOSE_INIT_ARM 462 printf("done!\n"); 463 #endif 464 465 #ifdef VERBOSE_INIT_ARM 466 printf("bootstrap done.\n"); 467 #endif 468 469 /* @@@@ check this out: @@@ */ 470 arm32_vector_init(ARM_VECTORS_LOW, ARM_VEC_ALL); 471 472 /* 473 * Pages were allocated during the secondary bootstrap for the 474 * stacks for different CPU modes. 475 * We must now set the r13 registers in the different CPU modes to 476 * point to these stacks. 477 * Since the ARM stacks use STMFD etc. we must set r13 to the top end 478 * of the stack memory. 479 */ 480 #ifdef VERBOSE_INIT_ARM 481 printf("init subsystems: stacks "); 482 #endif 483 484 set_stackptr(PSR_IRQ32_MODE, 485 irqstack.pv_va + IRQ_STACK_SIZE * PAGE_SIZE); 486 set_stackptr(PSR_ABT32_MODE, 487 abtstack.pv_va + ABT_STACK_SIZE * PAGE_SIZE); 488 set_stackptr(PSR_UND32_MODE, 489 undstack.pv_va + UND_STACK_SIZE * PAGE_SIZE); 490 491 /* 492 * Well we should set a data abort handler. 493 * Once things get going this will change as we will need a proper 494 * handler. 495 * Until then we will use a handler that just panics but tells us 496 * why. 497 * Initialisation of the vectors will just panic on a data abort. 498 * This just fills in a slightly better one. 499 */ 500 #ifdef VERBOSE_INIT_ARM 501 printf("vectors "); 502 #endif 503 data_abort_handler_address = (u_int)data_abort_handler; 504 prefetch_abort_handler_address = (u_int)prefetch_abort_handler; 505 undefined_handler_address = (u_int)undefinedinstruction_bounce; 506 507 /* Initialise the undefined instruction handlers */ 508 #ifdef VERBOSE_INIT_ARM 509 printf("undefined "); 510 #endif 511 undefined_init(); 512 513 /* Load memory into UVM. */ 514 #ifdef VERBOSE_INIT_ARM 515 printf("page "); 516 #endif 517 uvm_setpagesize(); /* initialize PAGE_SIZE-dependent variables */ 518 uvm_page_physload(atop(physical_freestart), atop(physical_freeend), 519 atop(physical_freestart), atop(physical_freeend), 520 VM_FREELIST_DEFAULT); 521 uvm_page_physload(atop(physical_start), atop(physical_freeend_low), 522 atop(physical_start), atop(physical_freeend_low), 523 VM_FREELIST_DEFAULT); 524 525 /* Boot strap pmap telling it where the kernel page table is */ 526 #ifdef VERBOSE_INIT_ARM 527 printf("pmap "); 528 #endif 529 pmap_bootstrap(KERNEL_VM_BASE, KERNEL_VM_BASE + KERNEL_VM_SIZE); 530 531 /* Setup the IRQ system */ 532 #ifdef VERBOSE_INIT_ARM 533 printf("irq "); 534 #endif 535 at91_intr_init(); 536 537 #ifdef VERBOSE_INIT_ARM 538 printf("done.\n"); 539 #endif 540 541 #ifdef BOOTHOWTO 542 boothowto = BOOTHOWTO; 543 #endif 544 boothowto = AB_VERBOSE | AB_DEBUG; // @@@@ 545 546 #ifdef IPKDB 547 /* Initialise ipkdb */ 548 ipkdb_init(); 549 if (boothowto & RB_KDB) 550 ipkdb_connect(0); 551 #endif 552 553 #ifdef DDB 554 db_machine_init(); 555 if (boothowto & RB_KDB) 556 Debugger(); 557 #endif 558 #if 0 559 printf("test data abort...\n"); 560 *((volatile uint32_t*)(0x1234567F)) = 0xdeadbeef; 561 #endif 562 563 #ifdef VERBOSE_INIT_ARM 564 printf("%s: returning new stack pointer 0x%lX\n", __FUNCTION__, (kernelstack.pv_va + USPACE_SVC_STACK_TOP)); 565 #endif 566 567 /* We return the new stack pointer address */ 568 return(kernelstack.pv_va + USPACE_SVC_STACK_TOP); 569 } 570 571 static int 572 at91bus_match(device_t parent, cfdata_t match, void *aux) 573 { 574 // we could detect the device here... 575 if (strcmp(match->cf_name, "at91bus") == 0) 576 return 1; 577 return 0; 578 } 579 580 static device_t 581 at91bus_found(device_t self, bus_addr_t addr, int pid) 582 { 583 int locs[AT91BUSCF_NLOCS]; 584 struct at91bus_attach_args sa; 585 struct at91bus_softc *sc; 586 587 memset(&locs, 0, sizeof(locs)); 588 memset(&sa, 0, sizeof(sa)); 589 590 locs[AT91BUSCF_ADDR] = addr; 591 locs[AT91BUSCF_PID] = pid; 592 593 sc = device_private(self); 594 sa.sa_iot = sc->sc_iot; 595 sa.sa_dmat = sc->sc_dmat; 596 sa.sa_addr = addr; 597 sa.sa_size = 1; 598 sa.sa_pid = pid; 599 600 return config_found_sm_loc(self, "at91bus", locs, &sa, 601 at91bus_print, at91bus_submatch); 602 } 603 604 static void 605 at91bus_attach(device_t parent, device_t self, void *aux) 606 { 607 struct at91bus_softc *sc; 608 609 if (at91_chip_ndx < 0) 610 panic("%s: at91bus_init() has not been called!", __FUNCTION__); 611 612 sc = device_private(self); 613 614 /* initialize bus space and bus dma things... */ 615 sc->sc_iot = &at91_bs_tag; 616 sc->sc_dmat = at91_bus_dma_init(&at91_bd_tag); 617 618 if (at91bus_sc == NULL) 619 at91bus_sc = sc; 620 621 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", 622 at91_types[at91_chip_ndx].name, 623 AT91_SCLK / 1000U, AT91_SCLK % 1000U, 624 AT91_MCLK / 1000000U, (AT91_MCLK / 1000U) % 1000U, 625 AT91_PCLK / 1000000U, (AT91_PCLK / 1000U) % 1000U, 626 AT91_MSTCLK / 1000000U, (AT91_MSTCLK / 1000U) % 1000U, 627 AT91_PLLACLK / 1000000U, (AT91_PLLACLK / 1000U) % 1000U, 628 AT91_PLLBCLK / 1000000U, (AT91_PLLBCLK / 1000U) % 1000U); 629 630 /* 631 * Attach devices 632 */ 633 at91_search_peripherals(self, at91bus_found); 634 635 636 struct at91bus_attach_args sa; 637 memset(&sa, 0, sizeof(sa)); 638 sa.sa_iot = sc->sc_iot; 639 sa.sa_dmat = sc->sc_dmat; 640 config_search_ia(at91bus_search, self, "at91bus", &sa); 641 } 642 643 int 644 at91bus_submatch(device_t parent, cfdata_t cf, const int *ldesc, void *aux) 645 { 646 struct at91bus_attach_args *sa = aux; 647 648 if (cf->cf_loc[AT91BUSCF_ADDR] == ldesc[AT91BUSCF_ADDR] 649 && cf->cf_loc[AT91BUSCF_PID] == ldesc[AT91BUSCF_PID]) { 650 sa->sa_addr = cf->cf_loc[AT91BUSCF_ADDR]; 651 sa->sa_size = cf->cf_loc[AT91BUSCF_SIZE]; 652 sa->sa_pid = cf->cf_loc[AT91BUSCF_PID]; 653 return (config_match(parent, cf, aux)); 654 } else 655 return (0); 656 } 657 658 int 659 at91bus_search(device_t parent, cfdata_t cf, const int *ldesc, void *aux) 660 { 661 struct at91bus_attach_args *sa = aux; 662 663 sa->sa_addr = cf->cf_loc[AT91BUSCF_ADDR]; 664 sa->sa_size = cf->cf_loc[AT91BUSCF_SIZE]; 665 sa->sa_pid = cf->cf_loc[AT91BUSCF_PID]; 666 667 if (config_match(parent, cf, aux) > 0) 668 config_attach(parent, cf, aux, at91bus_print); 669 670 return (0); 671 } 672 673 static int 674 at91bus_print(void *aux, const char *name) 675 { 676 struct at91bus_attach_args *sa = (struct at91bus_attach_args*)aux; 677 678 if (name) 679 aprint_normal("%s at %s", sa->sa_pid >= 0 ? at91_peripheral_name(sa->sa_pid) : "device", name); 680 681 if (sa->sa_size) 682 aprint_normal(" at addr 0x%lx", sa->sa_addr); 683 if (sa->sa_size > 1) 684 aprint_normal("-0x%lx", sa->sa_addr + sa->sa_size - 1); 685 if (sa->sa_pid >= 0) 686 aprint_normal(" pid %d", sa->sa_pid); 687 688 return (UNCONF); 689 } 690 691 void consinit(void) 692 { 693 static int consinit_called; 694 695 if (consinit_called != 0) 696 return; 697 698 consinit_called = 1; 699 700 if (at91_chip_ndx < 0) 701 panic("%s: at91_init() has not been called!", __FUNCTION__); 702 703 // call machine specific bus initialization code 704 (*at91bus_tag->init)(&at91bus_clocks); 705 706 // attach console 707 (*at91bus_tag->attach_cn)(&at91_bs_tag, cnspeed, cnmode); 708 } 709