at91bus.c revision 1.1.2.1
1 /* $NetBSD: at91bus.c,v 1.1.2.1 2007/11/10 02:56:28 matt 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 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the NetBSD 18 * Foundation, Inc. and its contributors. 19 * 4. Neither the name of The NetBSD Foundation nor the names of its 20 * contributors may be used to endorse or promote products derived 21 * from this software without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 24 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 25 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 26 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 27 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 33 * POSSIBILITY OF SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 __KERNEL_RCSID(0, "$NetBSD: at91bus.c,v 1.1.2.1 2007/11/10 02:56:28 matt Exp $"); 38 39 #include "opt_ddb.h" 40 #include "opt_kgdb.h" 41 #include "opt_pmap_debug.h" 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 54 #include <machine/bootconfig.h> 55 #include <uvm/uvm_extern.h> 56 57 #include <dev/cons.h> 58 59 #include <machine/db_machdep.h> 60 #include <ddb/db_sym.h> 61 #include <ddb/db_extern.h> 62 63 #include <machine/bus.h> 64 #include <machine/cpu.h> 65 #include <machine/frame.h> 66 #include <arm/undefined.h> 67 68 #include <arm/arm32/machdep.h> 69 #include <arm/cpufunc.h> 70 71 #include <arm/at91/at91var.h> 72 #include <arm/at91/at91busvar.h> 73 #include <arm/at91/at91dbgureg.h> 74 75 //#include <dev/cons.h> 76 #include <sys/termios.h> 77 78 #include "locators.h" 79 80 /* console stuff: */ 81 #ifndef CONSPEED 82 #define CONSPEED B115200 83 #endif 84 85 #ifndef CONMODE 86 #define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */ 87 #endif 88 89 int cnspeed = CONSPEED; 90 int cnmode = CONMODE; 91 92 93 /* kernel mapping: */ 94 #define KERNEL_BASE_PHYS 0x20200000 95 #define KERNEL_TEXT_BASE (KERNEL_BASE + 0x00200000) 96 #define KERNEL_VM_BASE (KERNEL_BASE + 0x01000000) 97 #define KERNEL_VM_SIZE 0x0C000000 98 99 100 101 /* Define various stack sizes in pages */ 102 #define IRQ_STACK_SIZE 8 103 #define ABT_STACK_SIZE 8 104 #ifdef IPKDB 105 #define UND_STACK_SIZE 16 106 #else 107 #define UND_STACK_SIZE 8 108 #endif 109 110 /* boot configuration: */ 111 vm_offset_t physical_start; 112 vm_offset_t physical_freestart; 113 vm_offset_t physical_freeend; 114 vm_offset_t physical_freeend_low; 115 vm_offset_t physical_end; 116 u_int free_pages; 117 int physmem = 0; 118 119 /* Physical and virtual addresses for some global pages */ 120 pv_addr_t systempage; 121 pv_addr_t irqstack; 122 pv_addr_t undstack; 123 pv_addr_t abtstack; 124 pv_addr_t kernelstack; 125 126 vm_offset_t msgbufphys; 127 128 //static struct arm32_dma_range dma_ranges[4]; 129 130 extern u_int data_abort_handler_address; 131 extern u_int prefetch_abort_handler_address; 132 extern u_int undefined_handler_address; 133 134 #ifdef PMAP_DEBUG 135 extern int pmap_debug_level; 136 #endif 137 138 #define KERNEL_PT_SYS 0 /* L2 table for mapping vectors page */ 139 140 #define KERNEL_PT_KERNEL 1 /* L2 table for mapping kernel */ 141 #define KERNEL_PT_KERNEL_NUM 4 142 /* L2 tables for mapping kernel VM */ 143 #define KERNEL_PT_VMDATA (KERNEL_PT_KERNEL + KERNEL_PT_KERNEL_NUM) 144 145 #define KERNEL_PT_VMDATA_NUM 4 /* start with 16MB of KVM */ 146 #define NUM_KERNEL_PTS (KERNEL_PT_VMDATA + KERNEL_PT_VMDATA_NUM) 147 148 pv_addr_t kernel_pt_table[NUM_KERNEL_PTS]; 149 150 struct user *proc0paddr; 151 152 153 /* prototypes: */ 154 void consinit(void); 155 static int at91bus_match(struct device *, struct cfdata *, void *); 156 static void at91bus_attach(struct device *, struct device *, void *); 157 static int at91bus_search(struct device *, struct cfdata *, 158 const int *, void *); 159 static int at91bus_print(void *, const char *); 160 static int at91bus_submatch(struct device *, struct cfdata *, 161 const int *, void *); 162 163 164 CFATTACH_DECL(at91bus, sizeof(struct at91bus_softc), at91bus_match, at91bus_attach, NULL, NULL); 165 166 struct at91bus_clocks at91bus_clocks = {0}; 167 struct at91bus_softc *at91bus_sc = NULL; 168 169 #include "opt_at91types.h" 170 171 #ifdef AT91RM9200 172 #include <arm/at91/at91rm9200busvar.h> 173 #endif 174 175 #ifdef AT91SAM9261 176 #include <arm/at91/at91sam9261busvar.h> 177 #endif 178 179 static const struct { 180 u_int32_t cidr; 181 const char * name; 182 const struct at91bus_machdep *machdep; 183 } at91_types[] = { 184 { 185 DBGU_CIDR_AT91RM9200, 186 "AT91RM9200" 187 #ifdef AT91RM9200 188 , &at91rm9200bus 189 #endif 190 }, 191 { 192 DBGU_CIDR_AT91SAM9260, 193 "AT91SAM9260" 194 }, 195 { 196 DBGU_CIDR_AT91SAM9260, 197 "AT91SAM9261" 198 #ifdef AT91SAM9261 199 , &at91sam9261bus 200 #endif 201 }, 202 { 203 DBGU_CIDR_AT91SAM9260, 204 "AT91SAM9263" 205 }, 206 { 207 0, 208 0, 209 0 210 } 211 }; 212 213 u_int32_t at91_chip_id; 214 static int at91_chip_ndx = -1; 215 struct at91bus_machdep at91bus_machdep = { 0 }; 216 at91bus_tag_t at91bus_tag = 0; 217 218 static int 219 match_cid(void) 220 { 221 u_int32_t cidr; 222 int i; 223 224 /* get chip id */ 225 cidr = DBGUREG(DBGU_CIDR); 226 at91_chip_id = cidr; 227 228 /* do we know it? */ 229 for (i = 0; at91_types[i].name; i++) { 230 if (cidr == at91_types[i].cidr) 231 return i; 232 } 233 234 return -1; 235 } 236 237 int 238 at91bus_init(void) 239 { 240 int i = at91_chip_ndx = match_cid(); 241 242 if (i < 0) 243 panic("%s: unknown chip", __FUNCTION__); 244 245 if (!at91_types[i].machdep) 246 panic("%s: %s is not supported", __FUNCTION__, at91_types[i].name); 247 248 memcpy(&at91bus_machdep, at91_types[i].machdep, sizeof(at91bus_machdep)); 249 at91bus_tag = &at91bus_machdep; 250 251 return 0; 252 } 253 254 u_int 255 at91bus_setup(BootConfig *mem) 256 { 257 int loop; 258 int loop1; 259 u_int l1pagetable; 260 pv_addr_t kernel_l1pt; 261 262 consinit(); 263 264 #ifdef VERBOSE_INIT_ARM 265 printf("\nNetBSD/AT91 booting ...\n"); 266 #endif 267 268 // setup the CPU / MMU / TLB functions: 269 if (set_cpufuncs()) 270 panic("%s: cpu not recognized", __FUNCTION__); 271 272 #ifdef VERBOSE_INIT_ARM 273 printf("%s: configuring system...\n", __FUNCTION__); 274 #endif 275 276 /* 277 * Setup the variables that define the availability of 278 * physical memory. 279 */ 280 physical_start = mem->dram[0].address; 281 physical_end = mem->dram[0].address + mem->dram[0].pages * PAGE_SIZE; 282 283 physical_freestart = mem->dram[0].address + 0x9000ULL; 284 physical_freeend = KERNEL_BASE_PHYS; 285 physmem = (physical_end - physical_start) / PAGE_SIZE; 286 287 #ifdef VERBOSE_INIT_ARM 288 printf("physmemory: %d pages at 0x%08lx -> 0x%08lx\n", physmem, 289 physical_start, physical_end - 1); 290 #endif 291 292 free_pages = (physical_freeend - physical_freestart) / PAGE_SIZE; 293 294 #ifdef VERBOSE_INIT_ARM 295 printf("freestart = 0x%08lx, free_pages = %d (0x%08x)\n", 296 physical_freestart, free_pages, free_pages); 297 #endif 298 /* Define a macro to simplify memory allocation */ 299 #define valloc_pages(var, np) \ 300 alloc_pages((var).pv_pa, (np)); \ 301 (var).pv_va = KERNEL_BASE + (var).pv_pa - physical_start; 302 303 #define alloc_pages(var, np) \ 304 physical_freeend -= ((np) * PAGE_SIZE); \ 305 if (physical_freeend < physical_freestart) \ 306 panic("initarm: out of memory"); \ 307 (var) = physical_freeend; \ 308 free_pages -= (np); \ 309 memset((char *)(var), 0, ((np) * PAGE_SIZE)); 310 311 loop1 = 0; 312 kernel_l1pt.pv_pa = 0; 313 kernel_l1pt.pv_va = 0; 314 for (loop = 0; loop <= NUM_KERNEL_PTS; ++loop) { 315 /* Are we 16KB aligned for an L1 ? */ 316 if (((physical_freeend - L1_TABLE_SIZE) & (L1_TABLE_SIZE - 1)) == 0 317 && kernel_l1pt.pv_pa == 0) { 318 valloc_pages(kernel_l1pt, L1_TABLE_SIZE / PAGE_SIZE); 319 } else { 320 valloc_pages(kernel_pt_table[loop1], 321 L2_TABLE_SIZE / PAGE_SIZE); 322 ++loop1; 323 } 324 } 325 326 /* This should never be able to happen but better confirm that. */ 327 if (!kernel_l1pt.pv_pa || (kernel_l1pt.pv_pa & (L1_TABLE_SIZE-1)) != 0) 328 panic("initarm: Failed to align the kernel page directory"); 329 330 /* 331 * Allocate a page for the system vectors page 332 */ 333 valloc_pages(systempage, 1); 334 systempage.pv_va = 0x00000000; 335 336 /* Allocate stacks for all modes */ 337 valloc_pages(irqstack, IRQ_STACK_SIZE); 338 valloc_pages(abtstack, ABT_STACK_SIZE); 339 valloc_pages(undstack, UND_STACK_SIZE); 340 valloc_pages(kernelstack, UPAGES); 341 342 #ifdef VERBOSE_INIT_ARM 343 printf("IRQ stack: p0x%08lx v0x%08lx\n", irqstack.pv_pa, 344 irqstack.pv_va); 345 printf("ABT stack: p0x%08lx v0x%08lx\n", abtstack.pv_pa, 346 abtstack.pv_va); 347 printf("UND stack: p0x%08lx v0x%08lx\n", undstack.pv_pa, 348 undstack.pv_va); 349 printf("SVC stack: p0x%08lx v0x%08lx\n", kernelstack.pv_pa, 350 kernelstack.pv_va); 351 #endif 352 353 alloc_pages(msgbufphys, round_page(MSGBUFSIZE) / PAGE_SIZE); 354 355 /* 356 * Ok we have allocated physical pages for the primary kernel 357 * page tables. Save physical_freeend for when we give whats left 358 * of memory below 2Mbyte to UVM. 359 */ 360 361 physical_freeend_low = physical_freeend; 362 363 #ifdef VERBOSE_INIT_ARM 364 printf("Creating L1 page table at 0x%08lx\n", kernel_l1pt.pv_pa); 365 #endif 366 367 /* 368 * Now we start construction of the L1 page table 369 * We start by mapping the L2 page tables into the L1. 370 * This means that we can replace L1 mappings later on if necessary 371 */ 372 l1pagetable = kernel_l1pt.pv_pa; 373 374 /* Map the L2 pages tables in the L1 page table */ 375 pmap_link_l2pt(l1pagetable, 0x00000000, &kernel_pt_table[KERNEL_PT_SYS]); 376 for (loop = 0; loop < KERNEL_PT_KERNEL_NUM; loop++) 377 pmap_link_l2pt(l1pagetable, KERNEL_BASE + loop * 0x00400000, 378 &kernel_pt_table[KERNEL_PT_KERNEL + loop]); 379 for (loop = 0; loop < KERNEL_PT_VMDATA_NUM; loop++) 380 pmap_link_l2pt(l1pagetable, KERNEL_VM_BASE + loop * 0x00400000, 381 &kernel_pt_table[KERNEL_PT_VMDATA + loop]); 382 383 /* update the top of the kernel VM */ 384 pmap_curmaxkvaddr = 385 KERNEL_VM_BASE + (KERNEL_PT_VMDATA_NUM * 0x00400000); 386 387 #ifdef VERBOSE_INIT_ARM 388 printf("Mapping kernel\n"); 389 #endif 390 391 /* Now we fill in the L2 pagetable for the kernel static code/data */ 392 { 393 extern char etext[], _end[]; 394 size_t textsize = (uintptr_t) etext - KERNEL_TEXT_BASE; 395 size_t totalsize = (uintptr_t) _end - KERNEL_TEXT_BASE; 396 u_int logical; 397 398 textsize = (textsize + PGOFSET) & ~PGOFSET; 399 totalsize = (totalsize + PGOFSET) & ~PGOFSET; 400 401 logical = KERNEL_BASE_PHYS - mem->dram[0].address; /* offset of kernel in RAM */ 402 logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical, 403 physical_start + logical, textsize, 404 VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 405 logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical, 406 physical_start + logical, totalsize - textsize, 407 VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 408 } 409 410 #ifdef VERBOSE_INIT_ARM 411 printf("Constructing L2 page tables\n"); 412 #endif 413 414 /* Map the stack pages */ 415 pmap_map_chunk(l1pagetable, irqstack.pv_va, irqstack.pv_pa, 416 IRQ_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 417 pmap_map_chunk(l1pagetable, abtstack.pv_va, abtstack.pv_pa, 418 ABT_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 419 pmap_map_chunk(l1pagetable, undstack.pv_va, undstack.pv_pa, 420 UND_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 421 pmap_map_chunk(l1pagetable, kernelstack.pv_va, kernelstack.pv_pa, 422 UPAGES * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 423 424 pmap_map_chunk(l1pagetable, kernel_l1pt.pv_va, kernel_l1pt.pv_pa, 425 L1_TABLE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE); 426 427 for (loop = 0; loop < NUM_KERNEL_PTS; ++loop) { 428 pmap_map_chunk(l1pagetable, kernel_pt_table[loop].pv_va, 429 kernel_pt_table[loop].pv_pa, L2_TABLE_SIZE, 430 VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE); 431 } 432 433 /* Map the vector page. */ 434 pmap_map_entry(l1pagetable, ARM_VECTORS_LOW, systempage.pv_pa, 435 VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 436 437 /* Map the statically mapped devices. */ 438 pmap_devmap_bootstrap(l1pagetable, at91_devmap()); 439 440 /* 441 * Update the physical_freestart/physical_freeend/free_pages 442 * variables. 443 */ 444 { 445 extern char _end[]; 446 447 physical_freestart = physical_start + 448 (((((uintptr_t) _end) + PGOFSET) & ~PGOFSET) - 449 KERNEL_BASE); 450 physical_freeend = physical_end; 451 free_pages = 452 (physical_freeend - physical_freestart) / PAGE_SIZE; 453 } 454 455 /* 456 * Now we have the real page tables in place so we can switch to them. 457 * Once this is done we will be running with the REAL kernel page 458 * tables. 459 */ 460 461 /* Switch tables */ 462 #ifdef VERBOSE_INIT_ARM 463 printf("freestart = 0x%08lx, free_pages = %d (0x%x)\n", 464 physical_freestart, free_pages, free_pages); 465 printf("switching to new L1 page table @%#lx...", kernel_l1pt.pv_pa); 466 #endif 467 cpu_domains((DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)) | DOMAIN_CLIENT); 468 setttb(kernel_l1pt.pv_pa); 469 cpu_tlb_flushID(); 470 cpu_domains(DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)); 471 472 /* 473 * Moved from cpu_startup() as data_abort_handler() references 474 * this during uvm init 475 */ 476 proc0paddr = (struct user *)kernelstack.pv_va; 477 lwp0.l_addr = proc0paddr; 478 479 #ifdef VERBOSE_INIT_ARM 480 printf("done!\n"); 481 #endif 482 483 #ifdef VERBOSE_INIT_ARM 484 printf("bootstrap done.\n"); 485 #endif 486 487 /* @@@@ check this out: @@@ */ 488 arm32_vector_init(ARM_VECTORS_LOW, ARM_VEC_ALL); 489 490 /* 491 * Pages were allocated during the secondary bootstrap for the 492 * stacks for different CPU modes. 493 * We must now set the r13 registers in the different CPU modes to 494 * point to these stacks. 495 * Since the ARM stacks use STMFD etc. we must set r13 to the top end 496 * of the stack memory. 497 */ 498 #ifdef VERBOSE_INIT_ARM 499 printf("init subsystems: stacks "); 500 #endif 501 502 set_stackptr(PSR_IRQ32_MODE, 503 irqstack.pv_va + IRQ_STACK_SIZE * PAGE_SIZE); 504 set_stackptr(PSR_ABT32_MODE, 505 abtstack.pv_va + ABT_STACK_SIZE * PAGE_SIZE); 506 set_stackptr(PSR_UND32_MODE, 507 undstack.pv_va + UND_STACK_SIZE * PAGE_SIZE); 508 509 /* 510 * Well we should set a data abort handler. 511 * Once things get going this will change as we will need a proper 512 * handler. 513 * Until then we will use a handler that just panics but tells us 514 * why. 515 * Initialisation of the vectors will just panic on a data abort. 516 * This just fills in a slightly better one. 517 */ 518 #ifdef VERBOSE_INIT_ARM 519 printf("vectors "); 520 #endif 521 data_abort_handler_address = (u_int)data_abort_handler; 522 prefetch_abort_handler_address = (u_int)prefetch_abort_handler; 523 undefined_handler_address = (u_int)undefinedinstruction_bounce; 524 525 /* Initialise the undefined instruction handlers */ 526 #ifdef VERBOSE_INIT_ARM 527 printf("undefined "); 528 #endif 529 undefined_init(); 530 531 /* Load memory into UVM. */ 532 #ifdef VERBOSE_INIT_ARM 533 printf("page "); 534 #endif 535 uvm_setpagesize(); /* initialize PAGE_SIZE-dependent variables */ 536 uvm_page_physload(atop(physical_freestart), atop(physical_freeend), 537 atop(physical_freestart), atop(physical_freeend), 538 VM_FREELIST_DEFAULT); 539 uvm_page_physload(atop(physical_start), atop(physical_freeend_low), 540 atop(physical_start), atop(physical_freeend_low), 541 VM_FREELIST_DEFAULT); 542 543 /* Boot strap pmap telling it where the kernel page table is */ 544 #ifdef VERBOSE_INIT_ARM 545 printf("pmap "); 546 #endif 547 pmap_bootstrap((pd_entry_t *)kernel_l1pt.pv_va, KERNEL_VM_BASE, 548 KERNEL_VM_BASE + KERNEL_VM_SIZE); 549 550 /* Setup the IRQ system */ 551 #ifdef VERBOSE_INIT_ARM 552 printf("irq "); 553 #endif 554 at91_intr_init(); 555 556 #ifdef VERBOSE_INIT_ARM 557 printf("done.\n"); 558 #endif 559 560 #ifdef BOOTHOWTO 561 boothowto = BOOTHOWTO; 562 #endif 563 boothowto = AB_VERBOSE | AB_DEBUG; // @@@@ 564 565 #ifdef IPKDB 566 /* Initialise ipkdb */ 567 ipkdb_init(); 568 if (boothowto & RB_KDB) 569 ipkdb_connect(0); 570 #endif 571 572 #if NKSYMS || defined(DDB) || defined(LKM) 573 /* Firmware doesn't load symbols. */ 574 ksyms_init(0, NULL, NULL); 575 #endif 576 577 #ifdef DDB 578 db_machine_init(); 579 if (boothowto & RB_KDB) 580 Debugger(); 581 #endif 582 #if 0 583 printf("test data abort...\n"); 584 *((volatile uint32_t*)(0x1234567F)) = 0xdeadbeef; 585 #endif 586 587 #ifdef VERBOSE_INIT_ARM 588 printf("%s: returning new stack pointer 0x%lX\n", __FUNCTION__, (kernelstack.pv_va + USPACE_SVC_STACK_TOP)); 589 #endif 590 591 /* We return the new stack pointer address */ 592 return(kernelstack.pv_va + USPACE_SVC_STACK_TOP); 593 } 594 595 static int 596 at91bus_match(struct device *parent, struct cfdata *match, void *aux) 597 { 598 // we could detect the device here... 599 if (strcmp(match->cf_name, "at91bus") == 0) 600 return 1; 601 return 0; 602 } 603 604 static device_t 605 at91bus_found(struct device *self, bus_addr_t addr, int pid) 606 { 607 int locs[AT91BUSCF_NLOCS]; 608 struct at91bus_attach_args sa; 609 struct at91bus_softc *sc; 610 611 memset(&locs, 0, sizeof(locs)); 612 memset(&sa, 0, sizeof(sa)); 613 614 locs[AT91BUSCF_ADDR] = addr; 615 locs[AT91BUSCF_PID] = pid; 616 617 sc = (struct at91bus_softc*) self; 618 sa.sa_iot = sc->sc_iot; 619 sa.sa_dmat = sc->sc_dmat; 620 sa.sa_addr = addr; 621 sa.sa_size = 1; 622 sa.sa_pid = pid; 623 624 return config_found_sm_loc(self, "at91bus", locs, &sa, 625 at91bus_print, at91bus_submatch); 626 } 627 628 static void 629 at91bus_attach(struct device *parent, struct device *self, void *aux) 630 { 631 struct at91bus_softc *sc; 632 633 if (at91_chip_ndx < 0) 634 panic("%s: at91bus_init() has not been called!", __FUNCTION__); 635 636 sc = (struct at91bus_softc*) self; 637 638 /* initialize bus space and bus dma things... */ 639 sc->sc_iot = &at91_bs_tag; 640 sc->sc_dmat = at91_bus_dma_init(&at91_bd_tag); 641 642 if (at91bus_sc == NULL) 643 at91bus_sc = sc; 644 645 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", 646 at91_types[at91_chip_ndx].name, 647 AT91_SCLK / 1000U, AT91_SCLK % 1000U, 648 AT91_MCLK / 1000000U, (AT91_MCLK / 1000U) % 1000U, 649 AT91_PCLK / 1000000U, (AT91_PCLK / 1000U) % 1000U, 650 AT91_MSTCLK / 1000000U, (AT91_MSTCLK / 1000U) % 1000U, 651 AT91_PLLACLK / 1000000U, (AT91_PLLACLK / 1000U) % 1000U, 652 AT91_PLLBCLK / 1000000U, (AT91_PLLBCLK / 1000U) % 1000U); 653 654 /* 655 * Attach devices 656 */ 657 at91_search_peripherals(self, at91bus_found); 658 659 660 struct at91bus_attach_args sa; 661 memset(&sa, 0, sizeof(sa)); 662 sa.sa_iot = sc->sc_iot; 663 sa.sa_dmat = sc->sc_dmat; 664 config_search_ia(at91bus_search, self, "at91bus", &sa); 665 } 666 667 int 668 at91bus_submatch(parent, cf, ldesc, aux) 669 struct device *parent; 670 struct cfdata *cf; 671 const int *ldesc; 672 void *aux; 673 { 674 struct at91bus_attach_args *sa = aux; 675 676 if (cf->cf_loc[AT91BUSCF_ADDR] == ldesc[AT91BUSCF_ADDR] 677 && cf->cf_loc[AT91BUSCF_PID] == ldesc[AT91BUSCF_PID]) { 678 sa->sa_addr = cf->cf_loc[AT91BUSCF_ADDR]; 679 sa->sa_size = cf->cf_loc[AT91BUSCF_SIZE]; 680 sa->sa_pid = cf->cf_loc[AT91BUSCF_PID]; 681 return (config_match(parent, cf, aux)); 682 } else 683 return (0); 684 } 685 686 int 687 at91bus_search(parent, cf, ldesc, aux) 688 struct device *parent; 689 struct cfdata *cf; 690 const int *ldesc; 691 void *aux; 692 { 693 struct at91bus_attach_args *sa = aux; 694 695 sa->sa_addr = cf->cf_loc[AT91BUSCF_ADDR]; 696 sa->sa_size = cf->cf_loc[AT91BUSCF_SIZE]; 697 sa->sa_pid = cf->cf_loc[AT91BUSCF_PID]; 698 699 if (config_match(parent, cf, aux) > 0) 700 config_attach(parent, cf, aux, at91bus_print); 701 702 return (0); 703 } 704 705 static int 706 at91bus_print(aux, name) 707 void *aux; 708 const char *name; 709 { 710 struct at91bus_attach_args *sa = (struct at91bus_attach_args*)aux; 711 712 if (name) 713 aprint_normal("%s at %s", sa->sa_pid >= 0 ? at91_peripheral_name(sa->sa_pid) : "device", name); 714 715 if (sa->sa_size) 716 aprint_normal(" at addr 0x%lx", sa->sa_addr); 717 if (sa->sa_size > 1) 718 aprint_normal("-0x%lx", sa->sa_addr + sa->sa_size - 1); 719 if (sa->sa_pid >= 0) 720 aprint_normal(" pid %d", sa->sa_pid); 721 722 return (UNCONF); 723 } 724 725 void consinit(void) 726 { 727 static int consinit_called; 728 729 if (consinit_called != 0) 730 return; 731 732 consinit_called = 1; 733 734 if (at91_chip_ndx < 0) 735 panic("%s: at91_init() has not been called!", __FUNCTION__); 736 737 // call machine specific bus initialization code 738 (*at91bus_tag->init)(&at91bus_clocks); 739 740 // attach console 741 (*at91bus_tag->attach_cn)(&at91_bs_tag, cnspeed, cnmode); 742 } 743
Indexes created Mon Oct 20 20:10:13 GMT 2025