at91bus.c revision 1.5
1 /* $NetBSD: at91bus.c,v 1.5 2009/03/14 15:36:01 dsl 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 1.5 2009/03/14 15:36:01 dsl 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 irqstack; 121 pv_addr_t undstack; 122 pv_addr_t abtstack; 123 pv_addr_t kernelstack; 124 125 vm_offset_t msgbufphys; 126 127 //static struct arm32_dma_range dma_ranges[4]; 128 129 extern u_int data_abort_handler_address; 130 extern u_int prefetch_abort_handler_address; 131 extern u_int undefined_handler_address; 132 133 #ifdef PMAP_DEBUG 134 extern int pmap_debug_level; 135 #endif 136 137 #define KERNEL_PT_SYS 0 /* L2 table for mapping vectors page */ 138 139 #define KERNEL_PT_KERNEL 1 /* L2 table for mapping kernel */ 140 #define KERNEL_PT_KERNEL_NUM 4 141 /* L2 tables for mapping kernel VM */ 142 #define KERNEL_PT_VMDATA (KERNEL_PT_KERNEL + KERNEL_PT_KERNEL_NUM) 143 144 #define KERNEL_PT_VMDATA_NUM 4 /* start with 16MB of KVM */ 145 #define NUM_KERNEL_PTS (KERNEL_PT_VMDATA + KERNEL_PT_VMDATA_NUM) 146 147 pv_addr_t kernel_pt_table[NUM_KERNEL_PTS]; 148 149 struct user *proc0paddr; 150 151 152 /* prototypes: */ 153 void consinit(void); 154 static int at91bus_match(device_t, cfdata_t, void *); 155 static void at91bus_attach(device_t, device_t, void *); 156 static int at91bus_search(device_t, cfdata_t, 157 const int *, void *); 158 static int at91bus_print(void *, const char *); 159 static int at91bus_submatch(device_t, cfdata_t, 160 const int *, void *); 161 162 163 CFATTACH_DECL(at91bus, sizeof(struct at91bus_softc), at91bus_match, at91bus_attach, NULL, NULL); 164 165 struct at91bus_clocks at91bus_clocks = {0}; 166 struct at91bus_softc *at91bus_sc = NULL; 167 168 #include "opt_at91types.h" 169 170 #ifdef AT91RM9200 171 #include <arm/at91/at91rm9200busvar.h> 172 #endif 173 174 #ifdef AT91SAM9261 175 #include <arm/at91/at91sam9261busvar.h> 176 #endif 177 178 static const struct { 179 u_int32_t cidr; 180 const char * name; 181 const struct at91bus_machdep *machdep; 182 } at91_types[] = { 183 { 184 DBGU_CIDR_AT91RM9200, 185 "AT91RM9200" 186 #ifdef AT91RM9200 187 , &at91rm9200bus 188 #endif 189 }, 190 { 191 DBGU_CIDR_AT91SAM9260, 192 "AT91SAM9260" 193 }, 194 { 195 DBGU_CIDR_AT91SAM9260, 196 "AT91SAM9261" 197 #ifdef AT91SAM9261 198 , &at91sam9261bus 199 #endif 200 }, 201 { 202 DBGU_CIDR_AT91SAM9260, 203 "AT91SAM9263" 204 }, 205 { 206 0, 207 0, 208 0 209 } 210 }; 211 212 u_int32_t at91_chip_id; 213 static int at91_chip_ndx = -1; 214 struct at91bus_machdep at91bus_machdep = { 0 }; 215 at91bus_tag_t at91bus_tag = 0; 216 217 static int 218 match_cid(void) 219 { 220 u_int32_t cidr; 221 int i; 222 223 /* get chip id */ 224 cidr = DBGUREG(DBGU_CIDR); 225 at91_chip_id = cidr; 226 227 /* do we know it? */ 228 for (i = 0; at91_types[i].name; i++) { 229 if (cidr == at91_types[i].cidr) 230 return i; 231 } 232 233 return -1; 234 } 235 236 int 237 at91bus_init(void) 238 { 239 int i = at91_chip_ndx = match_cid(); 240 241 if (i < 0) 242 panic("%s: unknown chip", __FUNCTION__); 243 244 if (!at91_types[i].machdep) 245 panic("%s: %s is not supported", __FUNCTION__, at91_types[i].name); 246 247 memcpy(&at91bus_machdep, at91_types[i].machdep, sizeof(at91bus_machdep)); 248 at91bus_tag = &at91bus_machdep; 249 250 return 0; 251 } 252 253 u_int 254 at91bus_setup(BootConfig *mem) 255 { 256 int loop; 257 int loop1; 258 u_int l1pagetable; 259 260 consinit(); 261 262 #ifdef VERBOSE_INIT_ARM 263 printf("\nNetBSD/AT91 booting ...\n"); 264 #endif 265 266 // setup the CPU / MMU / TLB functions: 267 if (set_cpufuncs()) 268 panic("%s: cpu not recognized", __FUNCTION__); 269 270 #ifdef VERBOSE_INIT_ARM 271 printf("%s: configuring system...\n", __FUNCTION__); 272 #endif 273 274 /* 275 * Setup the variables that define the availability of 276 * physical memory. 277 */ 278 physical_start = mem->dram[0].address; 279 physical_end = mem->dram[0].address + mem->dram[0].pages * PAGE_SIZE; 280 281 physical_freestart = mem->dram[0].address + 0x9000ULL; 282 physical_freeend = KERNEL_BASE_PHYS; 283 physmem = (physical_end - physical_start) / PAGE_SIZE; 284 285 #ifdef VERBOSE_INIT_ARM 286 printf("physmemory: %d pages at 0x%08lx -> 0x%08lx\n", physmem, 287 physical_start, physical_end - 1); 288 #endif 289 290 free_pages = (physical_freeend - physical_freestart) / PAGE_SIZE; 291 292 #ifdef VERBOSE_INIT_ARM 293 printf("freestart = 0x%08lx, free_pages = %d (0x%08x)\n", 294 physical_freestart, free_pages, free_pages); 295 #endif 296 /* Define a macro to simplify memory allocation */ 297 #define valloc_pages(var, np) \ 298 alloc_pages((var).pv_pa, (np)); \ 299 (var).pv_va = KERNEL_BASE + (var).pv_pa - physical_start; 300 301 #define alloc_pages(var, np) \ 302 physical_freeend -= ((np) * PAGE_SIZE); \ 303 if (physical_freeend < physical_freestart) \ 304 panic("initarm: out of memory"); \ 305 (var) = physical_freeend; \ 306 free_pages -= (np); \ 307 memset((char *)(var), 0, ((np) * PAGE_SIZE)); 308 309 loop1 = 0; 310 for (loop = 0; loop <= NUM_KERNEL_PTS; ++loop) { 311 /* Are we 16KB aligned for an L1 ? */ 312 if (((physical_freeend - L1_TABLE_SIZE) & (L1_TABLE_SIZE - 1)) == 0 313 && kernel_l1pt.pv_pa == 0) { 314 valloc_pages(kernel_l1pt, L1_TABLE_SIZE / PAGE_SIZE); 315 } else { 316 valloc_pages(kernel_pt_table[loop1], 317 L2_TABLE_SIZE / PAGE_SIZE); 318 ++loop1; 319 } 320 } 321 322 /* This should never be able to happen but better confirm that. */ 323 if (!kernel_l1pt.pv_pa || (kernel_l1pt.pv_pa & (L1_TABLE_SIZE-1)) != 0) 324 panic("initarm: Failed to align the kernel page directory"); 325 326 /* 327 * Allocate a page for the system vectors page 328 */ 329 valloc_pages(systempage, 1); 330 systempage.pv_va = 0x00000000; 331 332 /* Allocate stacks for all modes */ 333 valloc_pages(irqstack, IRQ_STACK_SIZE); 334 valloc_pages(abtstack, ABT_STACK_SIZE); 335 valloc_pages(undstack, UND_STACK_SIZE); 336 valloc_pages(kernelstack, UPAGES); 337 338 #ifdef VERBOSE_INIT_ARM 339 printf("IRQ stack: p0x%08lx v0x%08lx\n", irqstack.pv_pa, 340 irqstack.pv_va); 341 printf("ABT stack: p0x%08lx v0x%08lx\n", abtstack.pv_pa, 342 abtstack.pv_va); 343 printf("UND stack: p0x%08lx v0x%08lx\n", undstack.pv_pa, 344 undstack.pv_va); 345 printf("SVC stack: p0x%08lx v0x%08lx\n", kernelstack.pv_pa, 346 kernelstack.pv_va); 347 #endif 348 349 alloc_pages(msgbufphys, round_page(MSGBUFSIZE) / PAGE_SIZE); 350 351 /* 352 * Ok we have allocated physical pages for the primary kernel 353 * page tables. Save physical_freeend for when we give whats left 354 * of memory below 2Mbyte to UVM. 355 */ 356 357 physical_freeend_low = physical_freeend; 358 359 #ifdef VERBOSE_INIT_ARM 360 printf("Creating L1 page table at 0x%08lx\n", kernel_l1pt.pv_pa); 361 #endif 362 363 /* 364 * Now we start construction of the L1 page table 365 * We start by mapping the L2 page tables into the L1. 366 * This means that we can replace L1 mappings later on if necessary 367 */ 368 l1pagetable = kernel_l1pt.pv_pa; 369 370 /* Map the L2 pages tables in the L1 page table */ 371 pmap_link_l2pt(l1pagetable, 0x00000000, &kernel_pt_table[KERNEL_PT_SYS]); 372 for (loop = 0; loop < KERNEL_PT_KERNEL_NUM; loop++) 373 pmap_link_l2pt(l1pagetable, KERNEL_BASE + loop * 0x00400000, 374 &kernel_pt_table[KERNEL_PT_KERNEL + loop]); 375 for (loop = 0; loop < KERNEL_PT_VMDATA_NUM; loop++) 376 pmap_link_l2pt(l1pagetable, KERNEL_VM_BASE + loop * 0x00400000, 377 &kernel_pt_table[KERNEL_PT_VMDATA + loop]); 378 379 /* update the top of the kernel VM */ 380 pmap_curmaxkvaddr = 381 KERNEL_VM_BASE + (KERNEL_PT_VMDATA_NUM * 0x00400000); 382 383 #ifdef VERBOSE_INIT_ARM 384 printf("Mapping kernel\n"); 385 #endif 386 387 /* Now we fill in the L2 pagetable for the kernel static code/data */ 388 { 389 extern char etext[], _end[]; 390 size_t textsize = (uintptr_t) etext - KERNEL_TEXT_BASE; 391 size_t totalsize = (uintptr_t) _end - KERNEL_TEXT_BASE; 392 u_int logical; 393 394 textsize = (textsize + PGOFSET) & ~PGOFSET; 395 totalsize = (totalsize + PGOFSET) & ~PGOFSET; 396 397 logical = KERNEL_BASE_PHYS - mem->dram[0].address; /* offset of kernel in RAM */ 398 logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical, 399 physical_start + logical, textsize, 400 VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 401 logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical, 402 physical_start + logical, totalsize - textsize, 403 VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 404 } 405 406 #ifdef VERBOSE_INIT_ARM 407 printf("Constructing L2 page tables\n"); 408 #endif 409 410 /* Map the stack pages */ 411 pmap_map_chunk(l1pagetable, irqstack.pv_va, irqstack.pv_pa, 412 IRQ_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 413 pmap_map_chunk(l1pagetable, abtstack.pv_va, abtstack.pv_pa, 414 ABT_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 415 pmap_map_chunk(l1pagetable, undstack.pv_va, undstack.pv_pa, 416 UND_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 417 pmap_map_chunk(l1pagetable, kernelstack.pv_va, kernelstack.pv_pa, 418 UPAGES * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 419 420 pmap_map_chunk(l1pagetable, kernel_l1pt.pv_va, kernel_l1pt.pv_pa, 421 L1_TABLE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE); 422 423 for (loop = 0; loop < NUM_KERNEL_PTS; ++loop) { 424 pmap_map_chunk(l1pagetable, kernel_pt_table[loop].pv_va, 425 kernel_pt_table[loop].pv_pa, L2_TABLE_SIZE, 426 VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE); 427 } 428 429 /* Map the vector page. */ 430 pmap_map_entry(l1pagetable, ARM_VECTORS_LOW, systempage.pv_pa, 431 VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 432 433 /* Map the statically mapped devices. */ 434 pmap_devmap_bootstrap(l1pagetable, at91_devmap()); 435 436 /* 437 * Update the physical_freestart/physical_freeend/free_pages 438 * variables. 439 */ 440 { 441 extern char _end[]; 442 443 physical_freestart = physical_start + 444 (((((uintptr_t) _end) + PGOFSET) & ~PGOFSET) - 445 KERNEL_BASE); 446 physical_freeend = physical_end; 447 free_pages = 448 (physical_freeend - physical_freestart) / PAGE_SIZE; 449 } 450 451 /* 452 * Now we have the real page tables in place so we can switch to them. 453 * Once this is done we will be running with the REAL kernel page 454 * tables. 455 */ 456 457 /* Switch tables */ 458 #ifdef VERBOSE_INIT_ARM 459 printf("freestart = 0x%08lx, free_pages = %d (0x%x)\n", 460 physical_freestart, free_pages, free_pages); 461 printf("switching to new L1 page table @%#lx...", kernel_l1pt.pv_pa); 462 #endif 463 cpu_domains((DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)) | DOMAIN_CLIENT); 464 setttb(kernel_l1pt.pv_pa); 465 cpu_tlb_flushID(); 466 cpu_domains(DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)); 467 468 /* 469 * Moved from cpu_startup() as data_abort_handler() references 470 * this during uvm init 471 */ 472 proc0paddr = (struct user *)kernelstack.pv_va; 473 lwp0.l_addr = proc0paddr; 474 475 #ifdef VERBOSE_INIT_ARM 476 printf("done!\n"); 477 #endif 478 479 #ifdef VERBOSE_INIT_ARM 480 printf("bootstrap done.\n"); 481 #endif 482 483 /* @@@@ check this out: @@@ */ 484 arm32_vector_init(ARM_VECTORS_LOW, ARM_VEC_ALL); 485 486 /* 487 * Pages were allocated during the secondary bootstrap for the 488 * stacks for different CPU modes. 489 * We must now set the r13 registers in the different CPU modes to 490 * point to these stacks. 491 * Since the ARM stacks use STMFD etc. we must set r13 to the top end 492 * of the stack memory. 493 */ 494 #ifdef VERBOSE_INIT_ARM 495 printf("init subsystems: stacks "); 496 #endif 497 498 set_stackptr(PSR_IRQ32_MODE, 499 irqstack.pv_va + IRQ_STACK_SIZE * PAGE_SIZE); 500 set_stackptr(PSR_ABT32_MODE, 501 abtstack.pv_va + ABT_STACK_SIZE * PAGE_SIZE); 502 set_stackptr(PSR_UND32_MODE, 503 undstack.pv_va + UND_STACK_SIZE * PAGE_SIZE); 504 505 /* 506 * Well we should set a data abort handler. 507 * Once things get going this will change as we will need a proper 508 * handler. 509 * Until then we will use a handler that just panics but tells us 510 * why. 511 * Initialisation of the vectors will just panic on a data abort. 512 * This just fills in a slightly better one. 513 */ 514 #ifdef VERBOSE_INIT_ARM 515 printf("vectors "); 516 #endif 517 data_abort_handler_address = (u_int)data_abort_handler; 518 prefetch_abort_handler_address = (u_int)prefetch_abort_handler; 519 undefined_handler_address = (u_int)undefinedinstruction_bounce; 520 521 /* Initialise the undefined instruction handlers */ 522 #ifdef VERBOSE_INIT_ARM 523 printf("undefined "); 524 #endif 525 undefined_init(); 526 527 /* Load memory into UVM. */ 528 #ifdef VERBOSE_INIT_ARM 529 printf("page "); 530 #endif 531 uvm_setpagesize(); /* initialize PAGE_SIZE-dependent variables */ 532 uvm_page_physload(atop(physical_freestart), atop(physical_freeend), 533 atop(physical_freestart), atop(physical_freeend), 534 VM_FREELIST_DEFAULT); 535 uvm_page_physload(atop(physical_start), atop(physical_freeend_low), 536 atop(physical_start), atop(physical_freeend_low), 537 VM_FREELIST_DEFAULT); 538 539 /* Boot strap pmap telling it where the kernel page table is */ 540 #ifdef VERBOSE_INIT_ARM 541 printf("pmap "); 542 #endif 543 pmap_bootstrap(KERNEL_VM_BASE, KERNEL_VM_BASE + KERNEL_VM_SIZE); 544 545 /* Setup the IRQ system */ 546 #ifdef VERBOSE_INIT_ARM 547 printf("irq "); 548 #endif 549 at91_intr_init(); 550 551 #ifdef VERBOSE_INIT_ARM 552 printf("done.\n"); 553 #endif 554 555 #ifdef BOOTHOWTO 556 boothowto = BOOTHOWTO; 557 #endif 558 boothowto = AB_VERBOSE | AB_DEBUG; // @@@@ 559 560 #ifdef IPKDB 561 /* Initialise ipkdb */ 562 ipkdb_init(); 563 if (boothowto & RB_KDB) 564 ipkdb_connect(0); 565 #endif 566 567 #ifdef DDB 568 db_machine_init(); 569 if (boothowto & RB_KDB) 570 Debugger(); 571 #endif 572 #if 0 573 printf("test data abort...\n"); 574 *((volatile uint32_t*)(0x1234567F)) = 0xdeadbeef; 575 #endif 576 577 #ifdef VERBOSE_INIT_ARM 578 printf("%s: returning new stack pointer 0x%lX\n", __FUNCTION__, (kernelstack.pv_va + USPACE_SVC_STACK_TOP)); 579 #endif 580 581 /* We return the new stack pointer address */ 582 return(kernelstack.pv_va + USPACE_SVC_STACK_TOP); 583 } 584 585 static int 586 at91bus_match(device_t parent, cfdata_t match, void *aux) 587 { 588 // we could detect the device here... 589 if (strcmp(match->cf_name, "at91bus") == 0) 590 return 1; 591 return 0; 592 } 593 594 static device_t 595 at91bus_found(device_t self, bus_addr_t addr, int pid) 596 { 597 int locs[AT91BUSCF_NLOCS]; 598 struct at91bus_attach_args sa; 599 struct at91bus_softc *sc; 600 601 memset(&locs, 0, sizeof(locs)); 602 memset(&sa, 0, sizeof(sa)); 603 604 locs[AT91BUSCF_ADDR] = addr; 605 locs[AT91BUSCF_PID] = pid; 606 607 sc = (struct at91bus_softc*) self; 608 sa.sa_iot = sc->sc_iot; 609 sa.sa_dmat = sc->sc_dmat; 610 sa.sa_addr = addr; 611 sa.sa_size = 1; 612 sa.sa_pid = pid; 613 614 return config_found_sm_loc(self, "at91bus", locs, &sa, 615 at91bus_print, at91bus_submatch); 616 } 617 618 static void 619 at91bus_attach(device_t parent, device_t self, void *aux) 620 { 621 struct at91bus_softc *sc; 622 623 if (at91_chip_ndx < 0) 624 panic("%s: at91bus_init() has not been called!", __FUNCTION__); 625 626 sc = (struct at91bus_softc*) self; 627 628 /* initialize bus space and bus dma things... */ 629 sc->sc_iot = &at91_bs_tag; 630 sc->sc_dmat = at91_bus_dma_init(&at91_bd_tag); 631 632 if (at91bus_sc == NULL) 633 at91bus_sc = sc; 634 635 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", 636 at91_types[at91_chip_ndx].name, 637 AT91_SCLK / 1000U, AT91_SCLK % 1000U, 638 AT91_MCLK / 1000000U, (AT91_MCLK / 1000U) % 1000U, 639 AT91_PCLK / 1000000U, (AT91_PCLK / 1000U) % 1000U, 640 AT91_MSTCLK / 1000000U, (AT91_MSTCLK / 1000U) % 1000U, 641 AT91_PLLACLK / 1000000U, (AT91_PLLACLK / 1000U) % 1000U, 642 AT91_PLLBCLK / 1000000U, (AT91_PLLBCLK / 1000U) % 1000U); 643 644 /* 645 * Attach devices 646 */ 647 at91_search_peripherals(self, at91bus_found); 648 649 650 struct at91bus_attach_args sa; 651 memset(&sa, 0, sizeof(sa)); 652 sa.sa_iot = sc->sc_iot; 653 sa.sa_dmat = sc->sc_dmat; 654 config_search_ia(at91bus_search, self, "at91bus", &sa); 655 } 656 657 int 658 at91bus_submatch(device_t parent, cfdata_t cf, const int *ldesc, void *aux) 659 { 660 struct at91bus_attach_args *sa = aux; 661 662 if (cf->cf_loc[AT91BUSCF_ADDR] == ldesc[AT91BUSCF_ADDR] 663 && cf->cf_loc[AT91BUSCF_PID] == ldesc[AT91BUSCF_PID]) { 664 sa->sa_addr = cf->cf_loc[AT91BUSCF_ADDR]; 665 sa->sa_size = cf->cf_loc[AT91BUSCF_SIZE]; 666 sa->sa_pid = cf->cf_loc[AT91BUSCF_PID]; 667 return (config_match(parent, cf, aux)); 668 } else 669 return (0); 670 } 671 672 int 673 at91bus_search(device_t parent, cfdata_t cf, const int *ldesc, void *aux) 674 { 675 struct at91bus_attach_args *sa = aux; 676 677 sa->sa_addr = cf->cf_loc[AT91BUSCF_ADDR]; 678 sa->sa_size = cf->cf_loc[AT91BUSCF_SIZE]; 679 sa->sa_pid = cf->cf_loc[AT91BUSCF_PID]; 680 681 if (config_match(parent, cf, aux) > 0) 682 config_attach(parent, cf, aux, at91bus_print); 683 684 return (0); 685 } 686 687 static int 688 at91bus_print(void *aux, const char *name) 689 { 690 struct at91bus_attach_args *sa = (struct at91bus_attach_args*)aux; 691 692 if (name) 693 aprint_normal("%s at %s", sa->sa_pid >= 0 ? at91_peripheral_name(sa->sa_pid) : "device", name); 694 695 if (sa->sa_size) 696 aprint_normal(" at addr 0x%lx", sa->sa_addr); 697 if (sa->sa_size > 1) 698 aprint_normal("-0x%lx", sa->sa_addr + sa->sa_size - 1); 699 if (sa->sa_pid >= 0) 700 aprint_normal(" pid %d", sa->sa_pid); 701 702 return (UNCONF); 703 } 704 705 void consinit(void) 706 { 707 static int consinit_called; 708 709 if (consinit_called != 0) 710 return; 711 712 consinit_called = 1; 713 714 if (at91_chip_ndx < 0) 715 panic("%s: at91_init() has not been called!", __FUNCTION__); 716 717 // call machine specific bus initialization code 718 (*at91bus_tag->init)(&at91bus_clocks); 719 720 // attach console 721 (*at91bus_tag->attach_cn)(&at91_bs_tag, cnspeed, cnmode); 722 } 723
Indexes created Wed Sep 24 14:09:57 GMT 2025