1 /* $NetBSD: at91bus.c,v 1.10 2009/12/26 16:01:23 uebayasi 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 1.10 2009/12/26 16:01:23 uebayasi Exp $"); 31 32 #include "opt_ddb.h" 33 #include "opt_kgdb.h" 34 #include "opt_pmap_debug.h" 35 36 #include <sys/param.h> 37 #include <sys/device.h> 38 #include <sys/systm.h> 39 #include <sys/kernel.h> 40 #include <sys/exec.h> 41 #include <sys/proc.h> 42 #include <sys/msgbuf.h> 43 #include <sys/reboot.h> 44 #include <sys/termios.h> 45 #include <sys/ksyms.h> 46 47 #include <machine/bootconfig.h> 48 #include <uvm/uvm_extern.h> 49 50 #include <dev/cons.h> 51 52 #include <machine/db_machdep.h> 53 #include <ddb/db_sym.h> 54 #include <ddb/db_extern.h> 55 56 #include <machine/bus.h> 57 #include <machine/cpu.h> 58 #include <machine/frame.h> 59 #include <arm/undefined.h> 60 61 #include <arm/arm32/machdep.h> 62 #include <arm/cpufunc.h> 63 64 #include <arm/at91/at91var.h> 65 #include <arm/at91/at91busvar.h> 66 #include <arm/at91/at91dbgureg.h> 67 68 //#include <dev/cons.h> 69 #include <sys/termios.h> 70 71 #include "locators.h" 72 73 /* console stuff: */ 74 #ifndef CONSPEED 75 #define CONSPEED B115200 76 #endif 77 78 #ifndef CONMODE 79 #define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */ 80 #endif 81 82 int cnspeed = CONSPEED; 83 int cnmode = CONMODE; 84 85 86 /* kernel mapping: */ 87 #define KERNEL_BASE_PHYS 0x20200000 88 #define KERNEL_TEXT_BASE (KERNEL_BASE + 0x00200000) 89 #define KERNEL_VM_BASE (KERNEL_BASE + 0x01000000) 90 #define KERNEL_VM_SIZE 0x0C000000 91 92 93 94 /* Define various stack sizes in pages */ 95 #define IRQ_STACK_SIZE 8 96 #define ABT_STACK_SIZE 8 97 #ifdef IPKDB 98 #define UND_STACK_SIZE 16 99 #else 100 #define UND_STACK_SIZE 8 101 #endif 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 /* Physical and virtual addresses for some global pages */ 112 pv_addr_t irqstack; 113 pv_addr_t undstack; 114 pv_addr_t abtstack; 115 pv_addr_t kernelstack; 116 117 vm_offset_t msgbufphys; 118 119 //static struct arm32_dma_range dma_ranges[4]; 120 121 extern u_int data_abort_handler_address; 122 extern u_int prefetch_abort_handler_address; 123 extern u_int undefined_handler_address; 124 125 #ifdef PMAP_DEBUG 126 extern int pmap_debug_level; 127 #endif 128 129 #define KERNEL_PT_SYS 0 /* L2 table for mapping vectors page */ 130 131 #define KERNEL_PT_KERNEL 1 /* L2 table for mapping kernel */ 132 #define KERNEL_PT_KERNEL_NUM 4 133 /* L2 tables for mapping kernel VM */ 134 #define KERNEL_PT_VMDATA (KERNEL_PT_KERNEL + KERNEL_PT_KERNEL_NUM) 135 136 #define KERNEL_PT_VMDATA_NUM 4 /* start with 16MB of KVM */ 137 #define NUM_KERNEL_PTS (KERNEL_PT_VMDATA + KERNEL_PT_VMDATA_NUM) 138 139 pv_addr_t kernel_pt_table[NUM_KERNEL_PTS]; 140 141 /* prototypes: */ 142 void consinit(void); 143 static int at91bus_match(device_t, cfdata_t, void *); 144 static void at91bus_attach(device_t, device_t, void *); 145 static int at91bus_search(device_t, cfdata_t, 146 const int *, void *); 147 static int at91bus_print(void *, const char *); 148 static int at91bus_submatch(device_t, cfdata_t, 149 const int *, void *); 150 151 152 CFATTACH_DECL(at91bus, sizeof(struct at91bus_softc), at91bus_match, at91bus_attach, NULL, NULL); 153 154 struct at91bus_clocks at91bus_clocks = {0}; 155 struct at91bus_softc *at91bus_sc = NULL; 156 157 #include "opt_at91types.h" 158 159 #ifdef AT91RM9200 160 #include <arm/at91/at91rm9200busvar.h> 161 #endif 162 163 #ifdef AT91SAM9261 164 #include <arm/at91/at91sam9261busvar.h> 165 #endif 166 167 static const struct { 168 u_int32_t cidr; 169 const char * name; 170 const struct at91bus_machdep *machdep; 171 } at91_types[] = { 172 { 173 DBGU_CIDR_AT91RM9200, 174 "AT91RM9200" 175 #ifdef AT91RM9200 176 , &at91rm9200bus 177 #endif 178 }, 179 { 180 DBGU_CIDR_AT91SAM9260, 181 "AT91SAM9260" 182 }, 183 { 184 DBGU_CIDR_AT91SAM9260, 185 "AT91SAM9261" 186 #ifdef AT91SAM9261 187 , &at91sam9261bus 188 #endif 189 }, 190 { 191 DBGU_CIDR_AT91SAM9260, 192 "AT91SAM9263" 193 }, 194 { 195 0, 196 0, 197 0 198 } 199 }; 200 201 u_int32_t at91_chip_id; 202 static int at91_chip_ndx = -1; 203 struct at91bus_machdep at91bus_machdep = { 0 }; 204 at91bus_tag_t at91bus_tag = 0; 205 206 static int 207 match_cid(void) 208 { 209 u_int32_t cidr; 210 int i; 211 212 /* get chip id */ 213 cidr = DBGUREG(DBGU_CIDR); 214 at91_chip_id = cidr; 215 216 /* do we know it? */ 217 for (i = 0; at91_types[i].name; i++) { 218 if (cidr == at91_types[i].cidr) 219 return i; 220 } 221 222 return -1; 223 } 224 225 int 226 at91bus_init(void) 227 { 228 int i = at91_chip_ndx = match_cid(); 229 230 if (i < 0) 231 panic("%s: unknown chip", __FUNCTION__); 232 233 if (!at91_types[i].machdep) 234 panic("%s: %s is not supported", __FUNCTION__, at91_types[i].name); 235 236 memcpy(&at91bus_machdep, at91_types[i].machdep, sizeof(at91bus_machdep)); 237 at91bus_tag = &at91bus_machdep; 238 239 return 0; 240 } 241 242 u_int 243 at91bus_setup(BootConfig *mem) 244 { 245 int loop; 246 int loop1; 247 u_int l1pagetable; 248 249 consinit(); 250 251 #ifdef VERBOSE_INIT_ARM 252 printf("\nNetBSD/AT91 booting ...\n"); 253 #endif 254 255 // setup the CPU / MMU / TLB functions: 256 if (set_cpufuncs()) 257 panic("%s: cpu not recognized", __FUNCTION__); 258 259 #ifdef VERBOSE_INIT_ARM 260 printf("%s: configuring system...\n", __FUNCTION__); 261 #endif 262 263 /* 264 * Setup the variables that define the availability of 265 * physical memory. 266 */ 267 physical_start = mem->dram[0].address; 268 physical_end = mem->dram[0].address + mem->dram[0].pages * PAGE_SIZE; 269 270 physical_freestart = mem->dram[0].address + 0x9000ULL; 271 physical_freeend = KERNEL_BASE_PHYS; 272 physmem = (physical_end - physical_start) / PAGE_SIZE; 273 274 #ifdef VERBOSE_INIT_ARM 275 printf("physmemory: %d pages at 0x%08lx -> 0x%08lx\n", physmem, 276 physical_start, physical_end - 1); 277 #endif 278 279 free_pages = (physical_freeend - physical_freestart) / PAGE_SIZE; 280 281 #ifdef VERBOSE_INIT_ARM 282 printf("freestart = 0x%08lx, free_pages = %d (0x%08x)\n", 283 physical_freestart, free_pages, free_pages); 284 #endif 285 /* Define a macro to simplify memory allocation */ 286 #define valloc_pages(var, np) \ 287 alloc_pages((var).pv_pa, (np)); \ 288 (var).pv_va = KERNEL_BASE + (var).pv_pa - physical_start; 289 290 #define alloc_pages(var, np) \ 291 physical_freeend -= ((np) * PAGE_SIZE); \ 292 if (physical_freeend < physical_freestart) \ 293 panic("initarm: out of memory"); \ 294 (var) = physical_freeend; \ 295 free_pages -= (np); \ 296 memset((char *)(var), 0, ((np) * PAGE_SIZE)); 297 298 loop1 = 0; 299 for (loop = 0; loop <= NUM_KERNEL_PTS; ++loop) { 300 /* Are we 16KB aligned for an L1 ? */ 301 if (((physical_freeend - L1_TABLE_SIZE) & (L1_TABLE_SIZE - 1)) == 0 302 && kernel_l1pt.pv_pa == 0) { 303 valloc_pages(kernel_l1pt, L1_TABLE_SIZE / PAGE_SIZE); 304 } else { 305 valloc_pages(kernel_pt_table[loop1], 306 L2_TABLE_SIZE / PAGE_SIZE); 307 ++loop1; 308 } 309 } 310 311 /* This should never be able to happen but better confirm that. */ 312 if (!kernel_l1pt.pv_pa || (kernel_l1pt.pv_pa & (L1_TABLE_SIZE-1)) != 0) 313 panic("initarm: Failed to align the kernel page directory"); 314 315 /* 316 * Allocate a page for the system vectors page 317 */ 318 valloc_pages(systempage, 1); 319 systempage.pv_va = 0x00000000; 320 321 /* Allocate stacks for all modes */ 322 valloc_pages(irqstack, IRQ_STACK_SIZE); 323 valloc_pages(abtstack, ABT_STACK_SIZE); 324 valloc_pages(undstack, UND_STACK_SIZE); 325 valloc_pages(kernelstack, UPAGES); 326 327 #ifdef VERBOSE_INIT_ARM 328 printf("IRQ stack: p0x%08lx v0x%08lx\n", irqstack.pv_pa, 329 irqstack.pv_va); 330 printf("ABT stack: p0x%08lx v0x%08lx\n", abtstack.pv_pa, 331 abtstack.pv_va); 332 printf("UND stack: p0x%08lx v0x%08lx\n", undstack.pv_pa, 333 undstack.pv_va); 334 printf("SVC stack: p0x%08lx v0x%08lx\n", kernelstack.pv_pa, 335 kernelstack.pv_va); 336 #endif 337 338 alloc_pages(msgbufphys, round_page(MSGBUFSIZE) / PAGE_SIZE); 339 340 /* 341 * Ok we have allocated physical pages for the primary kernel 342 * page tables. Save physical_freeend for when we give whats left 343 * of memory below 2Mbyte to UVM. 344 */ 345 346 physical_freeend_low = physical_freeend; 347 348 #ifdef VERBOSE_INIT_ARM 349 printf("Creating L1 page table at 0x%08lx\n", kernel_l1pt.pv_pa); 350 #endif 351 352 /* 353 * Now we start construction of the L1 page table 354 * We start by mapping the L2 page tables into the L1. 355 * This means that we can replace L1 mappings later on if necessary 356 */ 357 l1pagetable = kernel_l1pt.pv_pa; 358 359 /* Map the L2 pages tables in the L1 page table */ 360 pmap_link_l2pt(l1pagetable, 0x00000000, &kernel_pt_table[KERNEL_PT_SYS]); 361 for (loop = 0; loop < KERNEL_PT_KERNEL_NUM; loop++) 362 pmap_link_l2pt(l1pagetable, KERNEL_BASE + loop * 0x00400000, 363 &kernel_pt_table[KERNEL_PT_KERNEL + loop]); 364 for (loop = 0; loop < KERNEL_PT_VMDATA_NUM; loop++) 365 pmap_link_l2pt(l1pagetable, KERNEL_VM_BASE + loop * 0x00400000, 366 &kernel_pt_table[KERNEL_PT_VMDATA + loop]); 367 368 /* update the top of the kernel VM */ 369 pmap_curmaxkvaddr = 370 KERNEL_VM_BASE + (KERNEL_PT_VMDATA_NUM * 0x00400000); 371 372 #ifdef VERBOSE_INIT_ARM 373 printf("Mapping kernel\n"); 374 #endif 375 376 /* Now we fill in the L2 pagetable for the kernel static code/data */ 377 { 378 extern char etext[], _end[]; 379 size_t textsize = (uintptr_t) etext - KERNEL_TEXT_BASE; 380 size_t totalsize = (uintptr_t) _end - KERNEL_TEXT_BASE; 381 u_int logical; 382 383 textsize = (textsize + PGOFSET) & ~PGOFSET; 384 totalsize = (totalsize + PGOFSET) & ~PGOFSET; 385 386 logical = KERNEL_BASE_PHYS - mem->dram[0].address; /* offset of kernel in RAM */ 387 logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical, 388 physical_start + logical, textsize, 389 VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 390 logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical, 391 physical_start + logical, totalsize - textsize, 392 VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 393 } 394 395 #ifdef VERBOSE_INIT_ARM 396 printf("Constructing L2 page tables\n"); 397 #endif 398 399 /* Map the stack pages */ 400 pmap_map_chunk(l1pagetable, irqstack.pv_va, irqstack.pv_pa, 401 IRQ_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 402 pmap_map_chunk(l1pagetable, abtstack.pv_va, abtstack.pv_pa, 403 ABT_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 404 pmap_map_chunk(l1pagetable, undstack.pv_va, undstack.pv_pa, 405 UND_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 406 pmap_map_chunk(l1pagetable, kernelstack.pv_va, kernelstack.pv_pa, 407 UPAGES * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 408 409 pmap_map_chunk(l1pagetable, kernel_l1pt.pv_va, kernel_l1pt.pv_pa, 410 L1_TABLE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE); 411 412 for (loop = 0; loop < NUM_KERNEL_PTS; ++loop) { 413 pmap_map_chunk(l1pagetable, kernel_pt_table[loop].pv_va, 414 kernel_pt_table[loop].pv_pa, L2_TABLE_SIZE, 415 VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE); 416 } 417 418 /* Map the vector page. */ 419 pmap_map_entry(l1pagetable, ARM_VECTORS_LOW, systempage.pv_pa, 420 VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 421 422 /* Map the statically mapped devices. */ 423 pmap_devmap_bootstrap(l1pagetable, at91_devmap()); 424 425 /* 426 * Update the physical_freestart/physical_freeend/free_pages 427 * variables. 428 */ 429 { 430 extern char _end[]; 431 432 physical_freestart = physical_start + 433 (((((uintptr_t) _end) + PGOFSET) & ~PGOFSET) - 434 KERNEL_BASE); 435 physical_freeend = physical_end; 436 free_pages = 437 (physical_freeend - physical_freestart) / PAGE_SIZE; 438 } 439 440 /* 441 * Now we have the real page tables in place so we can switch to them. 442 * Once this is done we will be running with the REAL kernel page 443 * tables. 444 */ 445 446 /* Switch tables */ 447 #ifdef VERBOSE_INIT_ARM 448 printf("freestart = 0x%08lx, free_pages = %d (0x%x)\n", 449 physical_freestart, free_pages, free_pages); 450 printf("switching to new L1 page table @%#lx...", kernel_l1pt.pv_pa); 451 #endif 452 cpu_domains((DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)) | DOMAIN_CLIENT); 453 cpu_setttb(kernel_l1pt.pv_pa); 454 cpu_tlb_flushID(); 455 cpu_domains(DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)); 456 457 /* 458 * Moved from cpu_startup() as data_abort_handler() references 459 * this during uvm init 460 */ 461 uvm_lwp_setuarea(&lwp0, kernelstack.pv_va); 462 463 #ifdef VERBOSE_INIT_ARM 464 printf("done!\n"); 465 #endif 466 467 #ifdef VERBOSE_INIT_ARM 468 printf("bootstrap done.\n"); 469 #endif 470 471 /* @@@@ check this out: @@@ */ 472 arm32_vector_init(ARM_VECTORS_LOW, ARM_VEC_ALL); 473 474 /* 475 * Pages were allocated during the secondary bootstrap for the 476 * stacks for different CPU modes. 477 * We must now set the r13 registers in the different CPU modes to 478 * point to these stacks. 479 * Since the ARM stacks use STMFD etc. we must set r13 to the top end 480 * of the stack memory. 481 */ 482 #ifdef VERBOSE_INIT_ARM 483 printf("init subsystems: stacks "); 484 #endif 485 486 set_stackptr(PSR_IRQ32_MODE, 487 irqstack.pv_va + IRQ_STACK_SIZE * PAGE_SIZE); 488 set_stackptr(PSR_ABT32_MODE, 489 abtstack.pv_va + ABT_STACK_SIZE * PAGE_SIZE); 490 set_stackptr(PSR_UND32_MODE, 491 undstack.pv_va + UND_STACK_SIZE * PAGE_SIZE); 492 493 /* 494 * Well we should set a data abort handler. 495 * Once things get going this will change as we will need a proper 496 * handler. 497 * Until then we will use a handler that just panics but tells us 498 * why. 499 * Initialisation of the vectors will just panic on a data abort. 500 * This just fills in a slightly better one. 501 */ 502 #ifdef VERBOSE_INIT_ARM 503 printf("vectors "); 504 #endif 505 data_abort_handler_address = (u_int)data_abort_handler; 506 prefetch_abort_handler_address = (u_int)prefetch_abort_handler; 507 undefined_handler_address = (u_int)undefinedinstruction_bounce; 508 509 /* Initialise the undefined instruction handlers */ 510 #ifdef VERBOSE_INIT_ARM 511 printf("undefined "); 512 #endif 513 undefined_init(); 514 515 /* Load memory into UVM. */ 516 #ifdef VERBOSE_INIT_ARM 517 printf("page "); 518 #endif 519 uvm_setpagesize(); /* initialize PAGE_SIZE-dependent variables */ 520 uvm_page_physload(atop(physical_freestart), atop(physical_freeend), 521 atop(physical_freestart), atop(physical_freeend), 522 VM_FREELIST_DEFAULT); 523 uvm_page_physload(atop(physical_start), atop(physical_freeend_low), 524 atop(physical_start), atop(physical_freeend_low), 525 VM_FREELIST_DEFAULT); 526 527 /* Boot strap pmap telling it where the kernel page table is */ 528 #ifdef VERBOSE_INIT_ARM 529 printf("pmap "); 530 #endif 531 pmap_bootstrap(KERNEL_VM_BASE, KERNEL_VM_BASE + KERNEL_VM_SIZE); 532 533 /* Setup the IRQ system */ 534 #ifdef VERBOSE_INIT_ARM 535 printf("irq "); 536 #endif 537 at91_intr_init(); 538 539 #ifdef VERBOSE_INIT_ARM 540 printf("done.\n"); 541 #endif 542 543 #ifdef BOOTHOWTO 544 boothowto = BOOTHOWTO; 545 #endif 546 boothowto = AB_VERBOSE | AB_DEBUG; // @@@@ 547 548 #ifdef IPKDB 549 /* Initialise ipkdb */ 550 ipkdb_init(); 551 if (boothowto & RB_KDB) 552 ipkdb_connect(0); 553 #endif 554 555 #ifdef DDB 556 db_machine_init(); 557 if (boothowto & RB_KDB) 558 Debugger(); 559 #endif 560 #if 0 561 printf("test data abort...\n"); 562 *((volatile uint32_t*)(0x1234567F)) = 0xdeadbeef; 563 #endif 564 565 #ifdef VERBOSE_INIT_ARM 566 printf("%s: returning new stack pointer 0x%lX\n", __FUNCTION__, (kernelstack.pv_va + USPACE_SVC_STACK_TOP)); 567 #endif 568 569 /* We return the new stack pointer address */ 570 return(kernelstack.pv_va + USPACE_SVC_STACK_TOP); 571 } 572 573 static int 574 at91bus_match(device_t parent, cfdata_t match, void *aux) 575 { 576 // we could detect the device here... 577 if (strcmp(match->cf_name, "at91bus") == 0) 578 return 1; 579 return 0; 580 } 581 582 static device_t 583 at91bus_found(device_t self, bus_addr_t addr, int pid) 584 { 585 int locs[AT91BUSCF_NLOCS]; 586 struct at91bus_attach_args sa; 587 struct at91bus_softc *sc; 588 589 memset(&locs, 0, sizeof(locs)); 590 memset(&sa, 0, sizeof(sa)); 591 592 locs[AT91BUSCF_ADDR] = addr; 593 locs[AT91BUSCF_PID] = pid; 594 595 sc = (struct at91bus_softc*) self; 596 sa.sa_iot = sc->sc_iot; 597 sa.sa_dmat = sc->sc_dmat; 598 sa.sa_addr = addr; 599 sa.sa_size = 1; 600 sa.sa_pid = pid; 601 602 return config_found_sm_loc(self, "at91bus", locs, &sa, 603 at91bus_print, at91bus_submatch); 604 } 605 606 static void 607 at91bus_attach(device_t parent, device_t self, void *aux) 608 { 609 struct at91bus_softc *sc; 610 611 if (at91_chip_ndx < 0) 612 panic("%s: at91bus_init() has not been called!", __FUNCTION__); 613 614 sc = (struct at91bus_softc*) self; 615 616 /* initialize bus space and bus dma things... */ 617 sc->sc_iot = &at91_bs_tag; 618 sc->sc_dmat = at91_bus_dma_init(&at91_bd_tag); 619 620 if (at91bus_sc == NULL) 621 at91bus_sc = sc; 622 623 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", 624 at91_types[at91_chip_ndx].name, 625 AT91_SCLK / 1000U, AT91_SCLK % 1000U, 626 AT91_MCLK / 1000000U, (AT91_MCLK / 1000U) % 1000U, 627 AT91_PCLK / 1000000U, (AT91_PCLK / 1000U) % 1000U, 628 AT91_MSTCLK / 1000000U, (AT91_MSTCLK / 1000U) % 1000U, 629 AT91_PLLACLK / 1000000U, (AT91_PLLACLK / 1000U) % 1000U, 630 AT91_PLLBCLK / 1000000U, (AT91_PLLBCLK / 1000U) % 1000U); 631 632 /* 633 * Attach devices 634 */ 635 at91_search_peripherals(self, at91bus_found); 636 637 638 struct at91bus_attach_args sa; 639 memset(&sa, 0, sizeof(sa)); 640 sa.sa_iot = sc->sc_iot; 641 sa.sa_dmat = sc->sc_dmat; 642 config_search_ia(at91bus_search, self, "at91bus", &sa); 643 } 644 645 int 646 at91bus_submatch(device_t parent, cfdata_t cf, const int *ldesc, void *aux) 647 { 648 struct at91bus_attach_args *sa = aux; 649 650 if (cf->cf_loc[AT91BUSCF_ADDR] == ldesc[AT91BUSCF_ADDR] 651 && cf->cf_loc[AT91BUSCF_PID] == ldesc[AT91BUSCF_PID]) { 652 sa->sa_addr = cf->cf_loc[AT91BUSCF_ADDR]; 653 sa->sa_size = cf->cf_loc[AT91BUSCF_SIZE]; 654 sa->sa_pid = cf->cf_loc[AT91BUSCF_PID]; 655 return (config_match(parent, cf, aux)); 656 } else 657 return (0); 658 } 659 660 int 661 at91bus_search(device_t parent, cfdata_t cf, const int *ldesc, void *aux) 662 { 663 struct at91bus_attach_args *sa = aux; 664 665 sa->sa_addr = cf->cf_loc[AT91BUSCF_ADDR]; 666 sa->sa_size = cf->cf_loc[AT91BUSCF_SIZE]; 667 sa->sa_pid = cf->cf_loc[AT91BUSCF_PID]; 668 669 if (config_match(parent, cf, aux) > 0) 670 config_attach(parent, cf, aux, at91bus_print); 671 672 return (0); 673 } 674 675 static int 676 at91bus_print(void *aux, const char *name) 677 { 678 struct at91bus_attach_args *sa = (struct at91bus_attach_args*)aux; 679 680 if (name) 681 aprint_normal("%s at %s", sa->sa_pid >= 0 ? at91_peripheral_name(sa->sa_pid) : "device", name); 682 683 if (sa->sa_size) 684 aprint_normal(" at addr 0x%lx", sa->sa_addr); 685 if (sa->sa_size > 1) 686 aprint_normal("-0x%lx", sa->sa_addr + sa->sa_size - 1); 687 if (sa->sa_pid >= 0) 688 aprint_normal(" pid %d", sa->sa_pid); 689 690 return (UNCONF); 691 } 692 693 void consinit(void) 694 { 695 static int consinit_called; 696 697 if (consinit_called != 0) 698 return; 699 700 consinit_called = 1; 701 702 if (at91_chip_ndx < 0) 703 panic("%s: at91_init() has not been called!", __FUNCTION__); 704 705 // call machine specific bus initialization code 706 (*at91bus_tag->init)(&at91bus_clocks); 707 708 // attach console 709 (*at91bus_tag->attach_cn)(&at91_bs_tag, cnspeed, cnmode); 710 } 711