bcm283x_platform.c revision 1.2.2.3
1 /* $NetBSD: bcm283x_platform.c,v 1.2.2.3 2018/06/25 07:25:39 pgoyette Exp $ */ 2 3 /*- 4 * Copyright (c) 2017 Jared D. McNeill <jmcneill (at) invisible.ca> 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 AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __KERNEL_RCSID(0, "$NetBSD: bcm283x_platform.c,v 1.2.2.3 2018/06/25 07:25:39 pgoyette Exp $"); 31 32 #include "opt_arm_debug.h" 33 #include "opt_bcm283x.h" 34 #include "opt_cpuoptions.h" 35 #include "opt_ddb.h" 36 #include "opt_evbarm_boardtype.h" 37 #include "opt_kgdb.h" 38 #include "opt_fdt.h" 39 #include "opt_rpi.h" 40 #include "opt_vcprop.h" 41 42 #include "sdhc.h" 43 #include "bcmsdhost.h" 44 #include "bcmdwctwo.h" 45 #include "bcmspi.h" 46 #include "bsciic.h" 47 #include "plcom.h" 48 #include "com.h" 49 #include "genfb.h" 50 #include "ukbd.h" 51 52 #include <sys/param.h> 53 #include <sys/bus.h> 54 #include <sys/cpu.h> 55 #include <sys/device.h> 56 #include <sys/termios.h> 57 58 #include <net/if_ether.h> 59 60 #include <prop/proplib.h> 61 62 #include <dev/fdt/fdtvar.h> 63 64 #include <uvm/uvm_extern.h> 65 66 #include <machine/bootconfig.h> 67 #ifdef __aarch64__ 68 #include <aarch64/machdep.h> 69 #endif 70 #include <arm/armreg.h> 71 #include <arm/cpufunc.h> 72 73 #include <libfdt.h> 74 75 #include <arm/broadcom/bcm2835reg.h> 76 #include <arm/broadcom/bcm2835var.h> 77 #include <arm/broadcom/bcm283x_platform.h> 78 #include <arm/broadcom/bcm2835_intr.h> 79 #include <arm/broadcom/bcm2835_mbox.h> 80 #include <arm/broadcom/bcm2835_pmwdogvar.h> 81 82 #include <evbarm/dev/plcomreg.h> 83 #include <evbarm/dev/plcomvar.h> 84 85 #include <dev/ic/ns16550reg.h> 86 #include <dev/ic/comreg.h> 87 88 #include <evbarm/rpi/vcio.h> 89 #include <evbarm/rpi/vcpm.h> 90 #include <evbarm/rpi/vcprop.h> 91 92 #include <arm/fdt/arm_fdtvar.h> 93 94 #include <arm/cortex/gtmr_var.h> 95 96 #if NGENFB > 0 97 #include <dev/videomode/videomode.h> 98 #include <dev/videomode/edidvar.h> 99 #include <dev/wscons/wsconsio.h> 100 #endif 101 102 #if NUKBD > 0 103 #include <dev/usb/ukbdvar.h> 104 #endif 105 106 #ifdef DDB 107 #include <machine/db_machdep.h> 108 #include <ddb/db_sym.h> 109 #include <ddb/db_extern.h> 110 #endif 111 112 void bcm283x_platform_early_putchar(vaddr_t, paddr_t, char c); 113 void bcm2835_platform_early_putchar(char c); 114 void bcm2836_platform_early_putchar(char c); 115 void bcm2837_platform_early_putchar(char c); 116 117 extern void bcmgenfb_set_console_dev(device_t dev); 118 void bcmgenfb_set_ioctl(int(*)(void *, void *, u_long, void *, int, struct lwp *)); 119 extern void bcmgenfb_ddb_trap_callback(int where); 120 static int rpi_ioctl(void *, void *, u_long, void *, int, lwp_t *); 121 122 extern struct bus_space arm_generic_bs_tag; 123 extern struct bus_space arm_generic_a4x_bs_tag; 124 125 /* Prototypes for all the bus_space structure functions */ 126 bs_protos(arm_generic); 127 bs_protos(arm_generic_a4x); 128 bs_protos(bcm2835); 129 bs_protos(bcm2835_a4x); 130 bs_protos(bcm2836); 131 bs_protos(bcm2836_a4x); 132 133 struct bus_space bcm2835_bs_tag; 134 struct bus_space bcm2835_a4x_bs_tag; 135 struct bus_space bcm2836_bs_tag; 136 struct bus_space bcm2836_a4x_bs_tag; 137 138 int bcm283x_bs_map(void *, bus_addr_t, bus_size_t, int, bus_space_handle_t *); 139 paddr_t bcm283x_bs_mmap(void *, bus_addr_t, off_t, int, int); 140 paddr_t bcm283x_a4x_bs_mmap(void *, bus_addr_t, off_t, int, int); 141 142 int 143 bcm283x_bs_map(void *t, bus_addr_t ba, bus_size_t size, int flag, 144 bus_space_handle_t *bshp) 145 { 146 u_long startpa, endpa, pa; 147 vaddr_t va; 148 149 /* Convert BA to PA */ 150 pa = ba & ~BCM2835_BUSADDR_CACHE_MASK; 151 152 startpa = trunc_page(pa); 153 endpa = round_page(pa + size); 154 155 /* XXX use extent manager to check duplicate mapping */ 156 157 va = uvm_km_alloc(kernel_map, endpa - startpa, 0, 158 UVM_KMF_VAONLY | UVM_KMF_NOWAIT | UVM_KMF_COLORMATCH); 159 if (!va) 160 return ENOMEM; 161 162 *bshp = (bus_space_handle_t)(va + (pa - startpa)); 163 164 int pmapflags; 165 if (flag & BUS_SPACE_MAP_PREFETCHABLE) 166 pmapflags = PMAP_WRITE_COMBINE; 167 else if (flag & BUS_SPACE_MAP_CACHEABLE) 168 pmapflags = 0; 169 else 170 pmapflags = PMAP_NOCACHE; 171 for (pa = startpa; pa < endpa; pa += PAGE_SIZE, va += PAGE_SIZE) { 172 pmap_kenter_pa(va, pa, VM_PROT_READ | VM_PROT_WRITE, pmapflags); 173 } 174 pmap_update(pmap_kernel()); 175 176 return 0; 177 } 178 179 paddr_t 180 bcm283x_bs_mmap(void *t, bus_addr_t bpa, off_t offset, int prot, int flags) 181 { 182 /* Convert BA to PA */ 183 const paddr_t pa = bpa & ~BCM2835_BUSADDR_CACHE_MASK; 184 paddr_t bus_flags = 0; 185 186 if (flags & BUS_SPACE_MAP_PREFETCHABLE) 187 bus_flags |= ARM_MMAP_WRITECOMBINE; 188 189 return arm_btop(pa + offset) | bus_flags; 190 } 191 192 paddr_t 193 bcm283x_a4x_bs_mmap(void *t, bus_addr_t bpa, off_t offset, int prot, int flags) 194 { 195 /* Convert BA to PA */ 196 const paddr_t pa = bpa & ~BCM2835_BUSADDR_CACHE_MASK; 197 paddr_t bus_flags = 0; 198 199 if (flags & BUS_SPACE_MAP_PREFETCHABLE) 200 bus_flags |= ARM_MMAP_WRITECOMBINE; 201 202 return arm_btop(pa + 4 * offset) | bus_flags; 203 } 204 205 int 206 bcm2835_bs_map(void *t, bus_addr_t ba, bus_size_t size, int flag, 207 bus_space_handle_t *bshp) 208 { 209 const struct pmap_devmap *pd; 210 bool match = false; 211 u_long pa; 212 213 /* Attempt to find the PA device mapping */ 214 if (ba >= BCM2835_PERIPHERALS_BASE_BUS && 215 ba < BCM2835_PERIPHERALS_BASE_BUS + BCM2835_PERIPHERALS_SIZE) { 216 match = true; 217 pa = BCM2835_PERIPHERALS_BUS_TO_PHYS(ba); 218 } 219 220 if (match && (pd = pmap_devmap_find_pa(pa, size)) != NULL) { 221 /* Device was statically mapped. */ 222 *bshp = pd->pd_va + (pa - pd->pd_pa); 223 return 0; 224 } 225 226 return bcm283x_bs_map(t, ba, size, flag, bshp); 227 } 228 229 int 230 bcm2836_bs_map(void *t, bus_addr_t ba, bus_size_t size, int flag, 231 bus_space_handle_t *bshp) 232 { 233 const struct pmap_devmap *pd; 234 bool match = false; 235 u_long pa; 236 237 /* Attempt to find the PA device mapping */ 238 if (ba >= BCM2835_PERIPHERALS_BASE_BUS && 239 ba < BCM2835_PERIPHERALS_BASE_BUS + BCM2835_PERIPHERALS_SIZE) { 240 match = true; 241 pa = BCM2836_PERIPHERALS_BUS_TO_PHYS(ba); 242 } 243 244 if (ba >= BCM2836_ARM_LOCAL_BASE && 245 ba < BCM2836_ARM_LOCAL_BASE + BCM2836_ARM_LOCAL_SIZE) { 246 match = true; 247 pa = ba; 248 } 249 250 if (match && (pd = pmap_devmap_find_pa(pa, size)) != NULL) { 251 /* Device was statically mapped. */ 252 *bshp = pd->pd_va + (pa - pd->pd_pa); 253 return 0; 254 } 255 256 return bcm283x_bs_map(t, ba, size, flag, bshp); 257 } 258 259 struct arm32_dma_range bcm2835_dma_ranges[] = { 260 [0] = { 261 .dr_sysbase = 0, 262 .dr_busbase = BCM2835_BUSADDR_CACHE_COHERENT, 263 } 264 }; 265 266 struct arm32_dma_range bcm2836_dma_ranges[] = { 267 [0] = { 268 .dr_sysbase = 0, 269 .dr_busbase = BCM2835_BUSADDR_CACHE_DIRECT, 270 } 271 }; 272 273 274 #if defined(SOC_BCM2835) 275 static const struct pmap_devmap * 276 bcm2835_platform_devmap(void) 277 { 278 static const struct pmap_devmap devmap[] = { 279 DEVMAP_ENTRY(BCM2835_PERIPHERALS_VBASE, BCM2835_PERIPHERALS_BASE, 280 BCM2835_PERIPHERALS_SIZE), /* 16Mb */ 281 282 DEVMAP_ENTRY_END 283 }; 284 285 return devmap; 286 } 287 #endif 288 289 #if defined(SOC_BCM2836) 290 static const struct pmap_devmap * 291 bcm2836_platform_devmap(void) 292 { 293 static const struct pmap_devmap devmap[] = { 294 DEVMAP_ENTRY(BCM2836_PERIPHERALS_VBASE, BCM2836_PERIPHERALS_BASE, 295 BCM2835_PERIPHERALS_SIZE), /* 16Mb */ 296 297 DEVMAP_ENTRY(BCM2836_ARM_LOCAL_VBASE, BCM2836_ARM_LOCAL_BASE, 298 BCM2836_ARM_LOCAL_SIZE), 299 300 DEVMAP_ENTRY_END 301 }; 302 303 return devmap; 304 } 305 #endif 306 /* 307 * Macros to translate between physical and virtual for a subset of the 308 * kernel address space. *Not* for general use. 309 */ 310 311 /* 312 * AARCH64 defines its own 313 */ 314 #if !(defined(KERN_VTOPHYS) && defined(KERN_PHYSTOV)) 315 #define KERN_VTOPDIFF KERNEL_BASE_VOFFSET 316 #define KERN_VTOPHYS(va) ((paddr_t)((vaddr_t)va - KERN_VTOPDIFF)) 317 #define KERN_PHYSTOV(pa) ((vaddr_t)((paddr_t)pa + KERN_VTOPDIFF)) 318 #endif 319 320 #ifndef RPI_FB_WIDTH 321 #define RPI_FB_WIDTH 1280 322 #endif 323 #ifndef RPI_FB_HEIGHT 324 #define RPI_FB_HEIGHT 720 325 #endif 326 327 int uart_clk = BCM2835_UART0_CLK; 328 int core_clk; 329 330 static struct { 331 struct vcprop_buffer_hdr vb_hdr; 332 struct vcprop_tag_clockrate vbt_uartclockrate; 333 struct vcprop_tag_clockrate vbt_vpuclockrate; 334 struct vcprop_tag end; 335 } vb_uart __cacheline_aligned = { 336 .vb_hdr = { 337 .vpb_len = sizeof(vb_uart), 338 .vpb_rcode = VCPROP_PROCESS_REQUEST, 339 }, 340 .vbt_uartclockrate = { 341 .tag = { 342 .vpt_tag = VCPROPTAG_GET_CLOCKRATE, 343 .vpt_len = VCPROPTAG_LEN(vb_uart.vbt_uartclockrate), 344 .vpt_rcode = VCPROPTAG_REQUEST 345 }, 346 .id = VCPROP_CLK_UART 347 }, 348 .vbt_vpuclockrate = { 349 .tag = { 350 .vpt_tag = VCPROPTAG_GET_CLOCKRATE, 351 .vpt_len = VCPROPTAG_LEN(vb_uart.vbt_vpuclockrate), 352 .vpt_rcode = VCPROPTAG_REQUEST 353 }, 354 .id = VCPROP_CLK_CORE 355 }, 356 .end = { 357 .vpt_tag = VCPROPTAG_NULL 358 } 359 }; 360 361 static struct { 362 struct vcprop_buffer_hdr vb_hdr; 363 struct vcprop_tag_fwrev vbt_fwrev; 364 struct vcprop_tag_boardmodel vbt_boardmodel; 365 struct vcprop_tag_boardrev vbt_boardrev; 366 struct vcprop_tag_macaddr vbt_macaddr; 367 struct vcprop_tag_memory vbt_memory; 368 struct vcprop_tag_boardserial vbt_serial; 369 struct vcprop_tag_dmachan vbt_dmachan; 370 struct vcprop_tag_cmdline vbt_cmdline; 371 struct vcprop_tag_clockrate vbt_emmcclockrate; 372 struct vcprop_tag_clockrate vbt_armclockrate; 373 struct vcprop_tag_clockrate vbt_vpuclockrate; 374 struct vcprop_tag end; 375 } vb __cacheline_aligned = { 376 .vb_hdr = { 377 .vpb_len = sizeof(vb), 378 .vpb_rcode = VCPROP_PROCESS_REQUEST, 379 }, 380 .vbt_fwrev = { 381 .tag = { 382 .vpt_tag = VCPROPTAG_GET_FIRMWAREREV, 383 .vpt_len = VCPROPTAG_LEN(vb.vbt_fwrev), 384 .vpt_rcode = VCPROPTAG_REQUEST 385 }, 386 }, 387 .vbt_boardmodel = { 388 .tag = { 389 .vpt_tag = VCPROPTAG_GET_BOARDMODEL, 390 .vpt_len = VCPROPTAG_LEN(vb.vbt_boardmodel), 391 .vpt_rcode = VCPROPTAG_REQUEST 392 }, 393 }, 394 .vbt_boardrev = { 395 .tag = { 396 .vpt_tag = VCPROPTAG_GET_BOARDREVISION, 397 .vpt_len = VCPROPTAG_LEN(vb.vbt_boardrev), 398 .vpt_rcode = VCPROPTAG_REQUEST 399 }, 400 }, 401 .vbt_macaddr = { 402 .tag = { 403 .vpt_tag = VCPROPTAG_GET_MACADDRESS, 404 .vpt_len = VCPROPTAG_LEN(vb.vbt_macaddr), 405 .vpt_rcode = VCPROPTAG_REQUEST 406 }, 407 }, 408 .vbt_memory = { 409 .tag = { 410 .vpt_tag = VCPROPTAG_GET_ARMMEMORY, 411 .vpt_len = VCPROPTAG_LEN(vb.vbt_memory), 412 .vpt_rcode = VCPROPTAG_REQUEST 413 }, 414 }, 415 .vbt_serial = { 416 .tag = { 417 .vpt_tag = VCPROPTAG_GET_BOARDSERIAL, 418 .vpt_len = VCPROPTAG_LEN(vb.vbt_serial), 419 .vpt_rcode = VCPROPTAG_REQUEST 420 }, 421 }, 422 .vbt_dmachan = { 423 .tag = { 424 .vpt_tag = VCPROPTAG_GET_DMACHAN, 425 .vpt_len = VCPROPTAG_LEN(vb.vbt_dmachan), 426 .vpt_rcode = VCPROPTAG_REQUEST 427 }, 428 }, 429 .vbt_cmdline = { 430 .tag = { 431 .vpt_tag = VCPROPTAG_GET_CMDLINE, 432 .vpt_len = VCPROPTAG_LEN(vb.vbt_cmdline), 433 .vpt_rcode = VCPROPTAG_REQUEST 434 }, 435 }, 436 .vbt_emmcclockrate = { 437 .tag = { 438 .vpt_tag = VCPROPTAG_GET_CLOCKRATE, 439 .vpt_len = VCPROPTAG_LEN(vb.vbt_emmcclockrate), 440 .vpt_rcode = VCPROPTAG_REQUEST 441 }, 442 .id = VCPROP_CLK_EMMC 443 }, 444 .vbt_armclockrate = { 445 .tag = { 446 .vpt_tag = VCPROPTAG_GET_CLOCKRATE, 447 .vpt_len = VCPROPTAG_LEN(vb.vbt_armclockrate), 448 .vpt_rcode = VCPROPTAG_REQUEST 449 }, 450 .id = VCPROP_CLK_ARM 451 }, 452 .vbt_vpuclockrate = { 453 .tag = { 454 .vpt_tag = VCPROPTAG_GET_CLOCKRATE, 455 .vpt_len = VCPROPTAG_LEN(vb.vbt_vpuclockrate), 456 .vpt_rcode = VCPROPTAG_REQUEST 457 }, 458 .id = VCPROP_CLK_CORE 459 }, 460 .end = { 461 .vpt_tag = VCPROPTAG_NULL 462 } 463 }; 464 465 #if NGENFB > 0 466 static struct { 467 struct vcprop_buffer_hdr vb_hdr; 468 struct vcprop_tag_edidblock vbt_edid; 469 struct vcprop_tag end; 470 } vb_edid __cacheline_aligned = { 471 .vb_hdr = { 472 .vpb_len = sizeof(vb_edid), 473 .vpb_rcode = VCPROP_PROCESS_REQUEST, 474 }, 475 .vbt_edid = { 476 .tag = { 477 .vpt_tag = VCPROPTAG_GET_EDID_BLOCK, 478 .vpt_len = VCPROPTAG_LEN(vb_edid.vbt_edid), 479 .vpt_rcode = VCPROPTAG_REQUEST, 480 }, 481 .blockno = 0, 482 }, 483 .end = { 484 .vpt_tag = VCPROPTAG_NULL 485 } 486 }; 487 488 static struct { 489 struct vcprop_buffer_hdr vb_hdr; 490 struct vcprop_tag_fbres vbt_res; 491 struct vcprop_tag_fbres vbt_vres; 492 struct vcprop_tag_fbdepth vbt_depth; 493 struct vcprop_tag_fbalpha vbt_alpha; 494 struct vcprop_tag_allocbuf vbt_allocbuf; 495 struct vcprop_tag_blankscreen vbt_blank; 496 struct vcprop_tag_fbpitch vbt_pitch; 497 struct vcprop_tag end; 498 } vb_setfb __cacheline_aligned = { 499 .vb_hdr = { 500 .vpb_len = sizeof(vb_setfb), 501 .vpb_rcode = VCPROP_PROCESS_REQUEST, 502 }, 503 .vbt_res = { 504 .tag = { 505 .vpt_tag = VCPROPTAG_SET_FB_RES, 506 .vpt_len = VCPROPTAG_LEN(vb_setfb.vbt_res), 507 .vpt_rcode = VCPROPTAG_REQUEST, 508 }, 509 .width = 0, 510 .height = 0, 511 }, 512 .vbt_vres = { 513 .tag = { 514 .vpt_tag = VCPROPTAG_SET_FB_VRES, 515 .vpt_len = VCPROPTAG_LEN(vb_setfb.vbt_vres), 516 .vpt_rcode = VCPROPTAG_REQUEST, 517 }, 518 .width = 0, 519 .height = 0, 520 }, 521 .vbt_depth = { 522 .tag = { 523 .vpt_tag = VCPROPTAG_SET_FB_DEPTH, 524 .vpt_len = VCPROPTAG_LEN(vb_setfb.vbt_depth), 525 .vpt_rcode = VCPROPTAG_REQUEST, 526 }, 527 .bpp = 32, 528 }, 529 .vbt_alpha = { 530 .tag = { 531 .vpt_tag = VCPROPTAG_SET_FB_ALPHA_MODE, 532 .vpt_len = VCPROPTAG_LEN(vb_setfb.vbt_alpha), 533 .vpt_rcode = VCPROPTAG_REQUEST, 534 }, 535 .state = VCPROP_ALPHA_IGNORED, 536 }, 537 .vbt_allocbuf = { 538 .tag = { 539 .vpt_tag = VCPROPTAG_ALLOCATE_BUFFER, 540 .vpt_len = VCPROPTAG_LEN(vb_setfb.vbt_allocbuf), 541 .vpt_rcode = VCPROPTAG_REQUEST, 542 }, 543 .address = PAGE_SIZE, /* alignment */ 544 }, 545 .vbt_blank = { 546 .tag = { 547 .vpt_tag = VCPROPTAG_BLANK_SCREEN, 548 .vpt_len = VCPROPTAG_LEN(vb_setfb.vbt_blank), 549 .vpt_rcode = VCPROPTAG_REQUEST, 550 }, 551 .state = VCPROP_BLANK_OFF, 552 }, 553 .vbt_pitch = { 554 .tag = { 555 .vpt_tag = VCPROPTAG_GET_FB_PITCH, 556 .vpt_len = VCPROPTAG_LEN(vb_setfb.vbt_pitch), 557 .vpt_rcode = VCPROPTAG_REQUEST, 558 }, 559 }, 560 .end = { 561 .vpt_tag = VCPROPTAG_NULL, 562 }, 563 }; 564 565 #endif 566 567 static int rpi_video_on = WSDISPLAYIO_VIDEO_ON; 568 569 #if defined(RPI_HWCURSOR) 570 #define CURSOR_BITMAP_SIZE (64 * 8) 571 #define CURSOR_ARGB_SIZE (64 * 64 * 4) 572 static uint32_t hcursor = 0; 573 static bus_addr_t pcursor = 0; 574 static uint32_t *cmem = NULL; 575 static int cursor_x = 0, cursor_y = 0, hot_x = 0, hot_y = 0, cursor_on = 0; 576 static uint32_t cursor_cmap[4]; 577 static uint8_t cursor_mask[8 * 64], cursor_bitmap[8 * 64]; 578 #endif 579 580 u_int 581 bcm283x_clk_get_rate_uart(void) 582 { 583 584 if (vcprop_tag_success_p(&vb_uart.vbt_uartclockrate.tag)) 585 return vb_uart.vbt_uartclockrate.rate; 586 return 0; 587 } 588 589 u_int 590 bcm283x_clk_get_rate_vpu(void) 591 { 592 593 if (vcprop_tag_success_p(&vb.vbt_vpuclockrate.tag) && 594 vb.vbt_vpuclockrate.rate > 0) { 595 return vb.vbt_vpuclockrate.rate; 596 } 597 return 0; 598 } 599 600 u_int 601 bcm283x_clk_get_rate_emmc(void) 602 { 603 604 if (vcprop_tag_success_p(&vb.vbt_emmcclockrate.tag) && 605 vb.vbt_emmcclockrate.rate > 0) { 606 return vb.vbt_emmcclockrate.rate; 607 } 608 return 0; 609 } 610 611 612 613 static void 614 bcm283x_uartinit(bus_space_tag_t iot, bus_space_handle_t ioh) 615 { 616 uint32_t res; 617 618 bcm2835_mbox_write(iot, ioh, BCMMBOX_CHANARM2VC, 619 KERN_VTOPHYS(&vb_uart)); 620 621 bcm2835_mbox_read(iot, ioh, BCMMBOX_CHANARM2VC, &res); 622 623 cpu_dcache_inv_range((vaddr_t)&vb_uart, sizeof(vb_uart)); 624 625 if (vcprop_tag_success_p(&vb_uart.vbt_uartclockrate.tag)) 626 uart_clk = vb_uart.vbt_uartclockrate.rate; 627 if (vcprop_tag_success_p(&vb_uart.vbt_vpuclockrate.tag)) 628 core_clk = vb_uart.vbt_vpuclockrate.rate; 629 } 630 631 #if defined(SOC_BCM2835) 632 static void 633 bcm2835_uartinit(void) 634 { 635 const paddr_t pa = BCM2835_PERIPHERALS_BUS_TO_PHYS(BCM2835_ARMMBOX_BASE); 636 const bus_space_tag_t iot = &bcm2835_bs_tag; 637 const bus_space_handle_t ioh = BCM2835_IOPHYSTOVIRT(pa); 638 639 bcm283x_uartinit(iot, ioh); 640 } 641 #endif 642 643 #if defined(SOC_BCM2836) 644 static void 645 bcm2836_uartinit(void) 646 { 647 const paddr_t pa = BCM2836_PERIPHERALS_BUS_TO_PHYS(BCM2835_ARMMBOX_BASE); 648 const bus_space_tag_t iot = &bcm2836_bs_tag; 649 const bus_space_handle_t ioh = BCM2835_IOPHYSTOVIRT(pa); 650 651 bcm283x_uartinit(iot, ioh); 652 } 653 #endif 654 655 #define BCM283x_MINIMUM_SPLIT (128U * 1024 * 1024) 656 657 static size_t bcm283x_memorysize; 658 659 static void 660 bcm283x_bootparams(bus_space_tag_t iot, bus_space_handle_t ioh) 661 { 662 uint32_t res; 663 664 bcm2835_mbox_write(iot, ioh, BCMMBOX_CHANPM, ( 665 #if (NSDHC > 0) 666 (1 << VCPM_POWER_SDCARD) | 667 #endif 668 #if (NPLCOM > 0) 669 (1 << VCPM_POWER_UART0) | 670 #endif 671 #if (NBCMDWCTWO > 0) 672 (1 << VCPM_POWER_USB) | 673 #endif 674 #if (NBSCIIC > 0) 675 (1 << VCPM_POWER_I2C0) | (1 << VCPM_POWER_I2C1) | 676 /* (1 << VCPM_POWER_I2C2) | */ 677 #endif 678 #if (NBCMSPI > 0) 679 (1 << VCPM_POWER_SPI) | 680 #endif 681 0) << 4); 682 683 bcm2835_mbox_write(iot, ioh, BCMMBOX_CHANARM2VC, KERN_VTOPHYS(&vb)); 684 685 bcm2835_mbox_read(iot, ioh, BCMMBOX_CHANARM2VC, &res); 686 687 cpu_dcache_inv_range((vaddr_t)&vb, sizeof(vb)); 688 689 if (!vcprop_buffer_success_p(&vb.vb_hdr)) { 690 bootconfig.dramblocks = 1; 691 bootconfig.dram[0].address = 0x0; 692 bootconfig.dram[0].pages = atop(BCM283x_MINIMUM_SPLIT); 693 return; 694 } 695 696 struct vcprop_tag_memory *vptp_mem = &vb.vbt_memory; 697 if (vcprop_tag_success_p(&vptp_mem->tag)) { 698 size_t n = vcprop_tag_resplen(&vptp_mem->tag) / 699 sizeof(struct vcprop_memory); 700 701 bcm283x_memorysize = 0; 702 bootconfig.dramblocks = 0; 703 704 for (int i = 0; i < n && i < DRAM_BLOCKS; i++) { 705 bootconfig.dram[i].address = vptp_mem->mem[i].base; 706 bootconfig.dram[i].pages = atop(vptp_mem->mem[i].size); 707 bootconfig.dramblocks++; 708 709 bcm283x_memorysize += vptp_mem->mem[i].size; 710 } 711 } 712 713 if (vcprop_tag_success_p(&vb.vbt_armclockrate.tag)) 714 curcpu()->ci_data.cpu_cc_freq = vb.vbt_armclockrate.rate; 715 716 #ifdef VERBOSE_INIT_ARM 717 if (vcprop_tag_success_p(&vb.vbt_memory.tag)) { 718 printf("%s: memory size %d\n", __func__, 719 vb.vbt_armclockrate.rate); 720 } 721 if (vcprop_tag_success_p(&vb.vbt_armclockrate.tag)) 722 printf("%s: arm clock %d\n", __func__, 723 vb.vbt_armclockrate.rate); 724 if (vcprop_tag_success_p(&vb.vbt_fwrev.tag)) 725 printf("%s: firmware rev %x\n", __func__, 726 vb.vbt_fwrev.rev); 727 if (vcprop_tag_success_p(&vb.vbt_boardmodel.tag)) 728 printf("%s: board model %x\n", __func__, 729 vb.vbt_boardmodel.model); 730 if (vcprop_tag_success_p(&vb.vbt_macaddr.tag)) 731 printf("%s: mac-address %llx\n", __func__, 732 vb.vbt_macaddr.addr); 733 if (vcprop_tag_success_p(&vb.vbt_boardrev.tag)) 734 printf("%s: board rev %x\n", __func__, 735 vb.vbt_boardrev.rev); 736 if (vcprop_tag_success_p(&vb.vbt_serial.tag)) 737 printf("%s: board serial %llx\n", __func__, 738 vb.vbt_serial.sn); 739 if (vcprop_tag_success_p(&vb.vbt_dmachan.tag)) 740 printf("%s: DMA channel mask 0x%08x\n", __func__, 741 vb.vbt_dmachan.mask); 742 743 if (vcprop_tag_success_p(&vb.vbt_cmdline.tag)) 744 printf("%s: cmdline %s\n", __func__, 745 vb.vbt_cmdline.cmdline); 746 #endif 747 } 748 749 #if defined(SOC_BCM2835) 750 static void 751 bcm2835_bootparams(void) 752 { 753 const paddr_t pa = BCM2835_PERIPHERALS_BUS_TO_PHYS(BCM2835_ARMMBOX_BASE); 754 const bus_space_tag_t iot = &bcm2835_bs_tag; 755 const bus_space_handle_t ioh = BCM2835_IOPHYSTOVIRT(pa); 756 757 bcm283x_bootparams(iot, ioh); 758 } 759 #endif 760 761 #if defined(SOC_BCM2836) 762 static void 763 bcm2836_bootparams(void) 764 { 765 const paddr_t pa = BCM2836_PERIPHERALS_BUS_TO_PHYS(BCM2835_ARMMBOX_BASE); 766 const bus_space_tag_t iot = &bcm2836_bs_tag; 767 const bus_space_handle_t ioh = BCM2835_IOPHYSTOVIRT(pa); 768 769 bcm283x_bootparams(iot, ioh); 770 } 771 772 static void 773 bcm2836_bootstrap(void) 774 { 775 #define RPI_CPU_MAX 4 776 777 #ifdef MULTIPROCESSOR 778 extern int cortex_mmuinfo; 779 780 arm_cpu_max = RPI_CPU_MAX; 781 cortex_mmuinfo = armreg_ttbr_read(); 782 #ifdef VERBOSE_INIT_ARM 783 printf("%s: %d cpus present\n", __func__, arm_cpu_max); 784 printf("%s: cortex_mmuinfo %x\n", __func__, cortex_mmuinfo); 785 #endif 786 #endif 787 788 #ifndef __aarch64__ 789 /* 790 * Even if no options MULTIPROCESSOR, 791 * It is need to initialize the secondary CPU, 792 * and go into wfi loop (cortex_mpstart), 793 * otherwise system would be freeze... 794 */ 795 extern void cortex_mpstart(void); 796 797 for (size_t i = 1; i < RPI_CPU_MAX; i++) { 798 bus_space_tag_t iot = &bcm2836_bs_tag; 799 bus_space_handle_t ioh = BCM2836_ARM_LOCAL_VBASE; 800 801 bus_space_write_4(iot, ioh, 802 BCM2836_LOCAL_MAILBOX3_SETN(i), 803 (uint32_t)cortex_mpstart); 804 } 805 #endif 806 #ifdef MULTIPROCESSOR 807 /* Wake up AP in case firmware has placed it in WFE state */ 808 __asm __volatile("sev" ::: "memory"); 809 810 for (int loop = 0; loop < 16; loop++) { 811 if (arm_cpu_hatched == __BITS(arm_cpu_max - 1, 1)) 812 break; 813 gtmr_delay(10000); 814 } 815 816 for (size_t i = 1; i < arm_cpu_max; i++) { 817 if ((arm_cpu_hatched & (1 << i)) == 0) { 818 printf("%s: warning: cpu%zu failed to hatch\n", 819 __func__, i); 820 } 821 } 822 #endif 823 } 824 825 #endif /* SOC_BCM2836 */ 826 827 #if NGENFB > 0 828 static bool 829 rpi_fb_parse_mode(const char *s, uint32_t *pwidth, uint32_t *pheight) 830 { 831 char *x; 832 833 if (strncmp(s, "disable", 7) == 0) 834 return false; 835 836 x = strchr(s, 'x'); 837 if (x) { 838 *pwidth = strtoul(s, NULL, 10); 839 *pheight = strtoul(x + 1, NULL, 10); 840 } 841 842 return true; 843 } 844 845 static bool 846 rpi_fb_get_edid_mode(uint32_t *pwidth, uint32_t *pheight) 847 { 848 struct edid_info ei; 849 uint8_t edid_data[1024]; 850 uint32_t res; 851 int error; 852 853 error = bcmmbox_request(BCMMBOX_CHANARM2VC, &vb_edid, 854 sizeof(vb_edid), &res); 855 if (error) { 856 printf("%s: mbox request failed (%d)\n", __func__, error); 857 return false; 858 } 859 860 if (!vcprop_buffer_success_p(&vb_edid.vb_hdr) || 861 !vcprop_tag_success_p(&vb_edid.vbt_edid.tag) || 862 vb_edid.vbt_edid.status != 0) 863 return false; 864 865 memset(edid_data, 0, sizeof(edid_data)); 866 memcpy(edid_data, vb_edid.vbt_edid.data, 867 sizeof(vb_edid.vbt_edid.data)); 868 edid_parse(edid_data, &ei); 869 #ifdef VERBOSE_INIT_ARM 870 edid_print(&ei); 871 #endif 872 873 if (ei.edid_preferred_mode) { 874 *pwidth = ei.edid_preferred_mode->hdisplay; 875 *pheight = ei.edid_preferred_mode->vdisplay; 876 } 877 878 return true; 879 } 880 881 /* 882 * Initialize framebuffer console. 883 * 884 * Some notes about boot parameters: 885 * - If "fb=disable" is present, ignore framebuffer completely. 886 * - If "fb=<width>x<height> is present, use the specified mode. 887 * - If "console=fb" is present, attach framebuffer to console. 888 */ 889 static bool 890 rpi_fb_init(prop_dictionary_t dict, void *aux) 891 { 892 uint32_t width = 0, height = 0; 893 uint32_t res; 894 char *ptr; 895 int integer; 896 int error; 897 bool is_bgr = true; 898 899 if (get_bootconf_option(boot_args, "fb", 900 BOOTOPT_TYPE_STRING, &ptr)) { 901 if (rpi_fb_parse_mode(ptr, &width, &height) == false) 902 return false; 903 } 904 if (width == 0 || height == 0) { 905 rpi_fb_get_edid_mode(&width, &height); 906 } 907 if (width == 0 || height == 0) { 908 width = RPI_FB_WIDTH; 909 height = RPI_FB_HEIGHT; 910 } 911 912 vb_setfb.vbt_res.width = width; 913 vb_setfb.vbt_res.height = height; 914 vb_setfb.vbt_vres.width = width; 915 vb_setfb.vbt_vres.height = height; 916 error = bcmmbox_request(BCMMBOX_CHANARM2VC, &vb_setfb, 917 sizeof(vb_setfb), &res); 918 if (error) { 919 printf("%s: mbox request failed (%d)\n", __func__, error); 920 return false; 921 } 922 923 if (!vcprop_buffer_success_p(&vb_setfb.vb_hdr) || 924 !vcprop_tag_success_p(&vb_setfb.vbt_res.tag) || 925 !vcprop_tag_success_p(&vb_setfb.vbt_vres.tag) || 926 !vcprop_tag_success_p(&vb_setfb.vbt_depth.tag) || 927 !vcprop_tag_success_p(&vb_setfb.vbt_allocbuf.tag) || 928 !vcprop_tag_success_p(&vb_setfb.vbt_blank.tag) || 929 !vcprop_tag_success_p(&vb_setfb.vbt_pitch.tag)) { 930 printf("%s: prop tag failed\n", __func__); 931 return false; 932 } 933 934 #ifdef VERBOSE_INIT_ARM 935 printf("%s: addr = 0x%x size = %d\n", __func__, 936 vb_setfb.vbt_allocbuf.address, 937 vb_setfb.vbt_allocbuf.size); 938 printf("%s: depth = %d\n", __func__, vb_setfb.vbt_depth.bpp); 939 printf("%s: pitch = %d\n", __func__, 940 vb_setfb.vbt_pitch.linebytes); 941 printf("%s: width = %d height = %d\n", __func__, 942 vb_setfb.vbt_res.width, vb_setfb.vbt_res.height); 943 printf("%s: vwidth = %d vheight = %d\n", __func__, 944 vb_setfb.vbt_vres.width, vb_setfb.vbt_vres.height); 945 #endif 946 947 if (vb_setfb.vbt_allocbuf.address == 0 || 948 vb_setfb.vbt_allocbuf.size == 0 || 949 vb_setfb.vbt_res.width == 0 || 950 vb_setfb.vbt_res.height == 0 || 951 vb_setfb.vbt_vres.width == 0 || 952 vb_setfb.vbt_vres.height == 0 || 953 vb_setfb.vbt_pitch.linebytes == 0) { 954 printf("%s: failed to set mode %ux%u\n", __func__, 955 width, height); 956 return false; 957 } 958 959 prop_dictionary_set_uint32(dict, "width", vb_setfb.vbt_res.width); 960 prop_dictionary_set_uint32(dict, "height", vb_setfb.vbt_res.height); 961 prop_dictionary_set_uint8(dict, "depth", vb_setfb.vbt_depth.bpp); 962 prop_dictionary_set_uint16(dict, "linebytes", 963 vb_setfb.vbt_pitch.linebytes); 964 prop_dictionary_set_uint32(dict, "address", 965 vb_setfb.vbt_allocbuf.address); 966 967 /* 968 * Old firmware uses BGR. New firmware uses RGB. The get and set 969 * pixel order mailbox properties don't seem to work. The firmware 970 * adds a kernel cmdline option bcm2708_fb.fbswap=<0|1>, so use it 971 * to determine pixel order. 0 means BGR, 1 means RGB. 972 * 973 * See https://github.com/raspberrypi/linux/issues/514 974 */ 975 if (get_bootconf_option(boot_args, "bcm2708_fb.fbswap", 976 BOOTOPT_TYPE_INT, &integer)) { 977 is_bgr = integer == 0; 978 } 979 prop_dictionary_set_bool(dict, "is_bgr", is_bgr); 980 981 /* if "genfb.type=<n>" is passed in cmdline, override wsdisplay type */ 982 if (get_bootconf_option(boot_args, "genfb.type", 983 BOOTOPT_TYPE_INT, &integer)) { 984 prop_dictionary_set_uint32(dict, "wsdisplay_type", integer); 985 } 986 987 #if defined(RPI_HWCURSOR) 988 struct fdt_attach_args *faa = aux; 989 bus_space_handle_t hc; 990 991 hcursor = rpi_alloc_mem(CURSOR_ARGB_SIZE, PAGE_SIZE, 992 MEM_FLAG_L1_NONALLOCATING | MEM_FLAG_HINT_PERMALOCK); 993 pcursor = rpi_lock_mem(hcursor); 994 #ifdef RPI_IOCTL_DEBUG 995 printf("hcursor: %08x\n", hcursor); 996 printf("pcursor: %08x\n", (uint32_t)pcursor); 997 printf("fb: %08x\n", (uint32_t)vb_setfb.vbt_allocbuf.address); 998 #endif 999 if (bus_space_map(faa->faa_bst, pcursor, CURSOR_ARGB_SIZE, 1000 BUS_SPACE_MAP_LINEAR|BUS_SPACE_MAP_PREFETCHABLE, &hc) != 0) { 1001 printf("couldn't map cursor memory\n"); 1002 } else { 1003 int i, j, k; 1004 1005 cmem = bus_space_vaddr(faa->faa_bst, hc); 1006 k = 0; 1007 for (j = 0; j < 64; j++) { 1008 for (i = 0; i < 64; i++) { 1009 cmem[i + k] = 1010 ((i & 8) ^ (j & 8)) ? 0xa0ff0000 : 0xa000ff00; 1011 } 1012 k += 64; 1013 } 1014 cpu_dcache_wb_range((vaddr_t)cmem, CURSOR_ARGB_SIZE); 1015 rpi_fb_initcursor(pcursor, 0, 0); 1016 #ifdef RPI_IOCTL_DEBUG 1017 rpi_fb_movecursor(600, 400, 1); 1018 #else 1019 rpi_fb_movecursor(cursor_x, cursor_y, cursor_on); 1020 #endif 1021 } 1022 #endif 1023 1024 return true; 1025 } 1026 1027 1028 #if defined(RPI_HWCURSOR) 1029 static int 1030 rpi_fb_do_cursor(struct wsdisplay_cursor *cur) 1031 { 1032 int pos = 0; 1033 int shape = 0; 1034 1035 if (cur->which & WSDISPLAY_CURSOR_DOCUR) { 1036 if (cursor_on != cur->enable) { 1037 cursor_on = cur->enable; 1038 pos = 1; 1039 } 1040 } 1041 if (cur->which & WSDISPLAY_CURSOR_DOHOT) { 1042 1043 hot_x = cur->hot.x; 1044 hot_y = cur->hot.y; 1045 pos = 1; 1046 shape = 1; 1047 } 1048 if (cur->which & WSDISPLAY_CURSOR_DOPOS) { 1049 1050 cursor_x = cur->pos.x; 1051 cursor_y = cur->pos.y; 1052 pos = 1; 1053 } 1054 if (cur->which & WSDISPLAY_CURSOR_DOCMAP) { 1055 int i; 1056 uint32_t val; 1057 1058 for (i = 0; i < min(cur->cmap.count, 3); i++) { 1059 val = (cur->cmap.red[i] << 16 ) | 1060 (cur->cmap.green[i] << 8) | 1061 (cur->cmap.blue[i] ) | 1062 0xff000000; 1063 cursor_cmap[i + cur->cmap.index + 2] = val; 1064 } 1065 shape = 1; 1066 } 1067 if (cur->which & WSDISPLAY_CURSOR_DOSHAPE) { 1068 int err; 1069 1070 err = copyin(cur->mask, cursor_mask, CURSOR_BITMAP_SIZE); 1071 err += copyin(cur->image, cursor_bitmap, CURSOR_BITMAP_SIZE); 1072 if (err != 0) 1073 return EFAULT; 1074 shape = 1; 1075 } 1076 if (shape) { 1077 int i, j, idx; 1078 uint8_t mask; 1079 1080 for (i = 0; i < CURSOR_BITMAP_SIZE; i++) { 1081 mask = 0x01; 1082 for (j = 0; j < 8; j++) { 1083 idx = ((cursor_mask[i] & mask) ? 2 : 0) | 1084 ((cursor_bitmap[i] & mask) ? 1 : 0); 1085 cmem[i * 8 + j] = cursor_cmap[idx]; 1086 mask = mask << 1; 1087 } 1088 } 1089 /* just in case */ 1090 cpu_dcache_wb_range((vaddr_t)cmem, CURSOR_ARGB_SIZE); 1091 rpi_fb_initcursor(pcursor, hot_x, hot_y); 1092 } 1093 if (pos) { 1094 rpi_fb_movecursor(cursor_x, cursor_y, cursor_on); 1095 } 1096 return 0; 1097 } 1098 #endif 1099 1100 static int 1101 rpi_ioctl(void *v, void *vs, u_long cmd, void *data, int flag, lwp_t *l) 1102 { 1103 1104 switch (cmd) { 1105 case WSDISPLAYIO_SVIDEO: 1106 { 1107 int d = *(int *)data; 1108 if (d == rpi_video_on) 1109 return 0; 1110 rpi_video_on = d; 1111 rpi_fb_set_video(d); 1112 #if defined(RPI_HWCURSOR) 1113 rpi_fb_movecursor(cursor_x, cursor_y, 1114 d ? cursor_on : 0); 1115 #endif 1116 } 1117 return 0; 1118 case WSDISPLAYIO_GVIDEO: 1119 *(int *)data = rpi_video_on; 1120 return 0; 1121 #if defined(RPI_HWCURSOR) 1122 case WSDISPLAYIO_GCURPOS: 1123 { 1124 struct wsdisplay_curpos *cp = (void *)data; 1125 1126 cp->x = cursor_x; 1127 cp->y = cursor_y; 1128 } 1129 return 0; 1130 case WSDISPLAYIO_SCURPOS: 1131 { 1132 struct wsdisplay_curpos *cp = (void *)data; 1133 1134 cursor_x = cp->x; 1135 cursor_y = cp->y; 1136 rpi_fb_movecursor(cursor_x, cursor_y, cursor_on); 1137 } 1138 return 0; 1139 case WSDISPLAYIO_GCURMAX: 1140 { 1141 struct wsdisplay_curpos *cp = (void *)data; 1142 1143 cp->x = 64; 1144 cp->y = 64; 1145 } 1146 return 0; 1147 case WSDISPLAYIO_SCURSOR: 1148 { 1149 struct wsdisplay_cursor *cursor = (void *)data; 1150 1151 return rpi_fb_do_cursor(cursor); 1152 } 1153 #endif 1154 default: 1155 return EPASSTHROUGH; 1156 } 1157 } 1158 1159 #endif 1160 1161 SYSCTL_SETUP(sysctl_machdep_rpi, "sysctl machdep subtree setup (rpi)") 1162 { 1163 sysctl_createv(clog, 0, NULL, NULL, 1164 CTLFLAG_PERMANENT, CTLTYPE_NODE, "machdep", NULL, 1165 NULL, 0, NULL, 0, CTL_MACHDEP, CTL_EOL); 1166 1167 sysctl_createv(clog, 0, NULL, NULL, 1168 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 1169 CTLTYPE_INT, "firmware_revision", NULL, NULL, 0, 1170 &vb.vbt_fwrev.rev, 0, CTL_MACHDEP, CTL_CREATE, CTL_EOL); 1171 1172 sysctl_createv(clog, 0, NULL, NULL, 1173 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 1174 CTLTYPE_INT, "board_model", NULL, NULL, 0, 1175 &vb.vbt_boardmodel.model, 0, CTL_MACHDEP, CTL_CREATE, CTL_EOL); 1176 1177 sysctl_createv(clog, 0, NULL, NULL, 1178 CTLFLAG_PERMANENT|CTLFLAG_READONLY, 1179 CTLTYPE_INT, "board_revision", NULL, NULL, 0, 1180 &vb.vbt_boardrev.rev, 0, CTL_MACHDEP, CTL_CREATE, CTL_EOL); 1181 1182 sysctl_createv(clog, 0, NULL, NULL, 1183 CTLFLAG_PERMANENT|CTLFLAG_READONLY|CTLFLAG_HEX|CTLFLAG_PRIVATE, 1184 CTLTYPE_QUAD, "serial", NULL, NULL, 0, 1185 &vb.vbt_serial.sn, 0, CTL_MACHDEP, CTL_CREATE, CTL_EOL); 1186 } 1187 1188 #if defined(SOC_BCM2835) 1189 static void 1190 bcm2835_platform_bootstrap(void) 1191 { 1192 1193 bcm2835_bs_tag = arm_generic_bs_tag; 1194 bcm2835_a4x_bs_tag = arm_generic_a4x_bs_tag; 1195 1196 bcm2835_bs_tag.bs_map = bcm2835_bs_map; 1197 bcm2835_bs_tag.bs_mmap = bcm283x_bs_mmap; 1198 bcm2835_a4x_bs_tag.bs_map = bcm2835_bs_map; 1199 bcm2835_a4x_bs_tag.bs_mmap = bcm283x_a4x_bs_mmap; 1200 1201 fdtbus_set_decoderegprop(false); 1202 1203 bcm2835_uartinit(); 1204 1205 bcm2835_bootparams(); 1206 } 1207 #endif 1208 1209 #if defined(SOC_BCM2836) 1210 static void 1211 bcm2836_platform_bootstrap(void) 1212 { 1213 1214 bcm2836_bs_tag = arm_generic_bs_tag; 1215 bcm2836_a4x_bs_tag = arm_generic_a4x_bs_tag; 1216 1217 bcm2836_bs_tag.bs_map = bcm2836_bs_map; 1218 bcm2836_bs_tag.bs_mmap = bcm283x_bs_mmap; 1219 bcm2836_a4x_bs_tag.bs_map = bcm2836_bs_map; 1220 bcm2836_a4x_bs_tag.bs_mmap = bcm283x_a4x_bs_mmap; 1221 1222 fdtbus_set_decoderegprop(false); 1223 1224 bcm2836_uartinit(); 1225 1226 bcm2836_bootparams(); 1227 1228 bcm2836_bootstrap(); 1229 } 1230 #endif 1231 1232 #if defined(SOC_BCM2835) 1233 static void 1234 bcm2835_platform_init_attach_args(struct fdt_attach_args *faa) 1235 { 1236 1237 faa->faa_bst = &bcm2835_bs_tag; 1238 faa->faa_a4x_bst = &bcm2835_a4x_bs_tag; 1239 faa->faa_dmat = &bcm2835_bus_dma_tag; 1240 1241 bcm2835_bus_dma_tag._ranges = bcm2835_dma_ranges; 1242 bcm2835_bus_dma_tag._nranges = __arraycount(bcm2835_dma_ranges); 1243 bcm2835_dma_ranges[0].dr_len = bcm283x_memorysize; 1244 } 1245 #endif 1246 1247 #if defined(SOC_BCM2836) 1248 static void 1249 bcm2836_platform_init_attach_args(struct fdt_attach_args *faa) 1250 { 1251 1252 faa->faa_bst = &bcm2836_bs_tag; 1253 faa->faa_a4x_bst = &bcm2836_a4x_bs_tag; 1254 faa->faa_dmat = &bcm2835_bus_dma_tag; 1255 1256 bcm2835_bus_dma_tag._ranges = bcm2836_dma_ranges; 1257 bcm2835_bus_dma_tag._nranges = __arraycount(bcm2836_dma_ranges); 1258 bcm2836_dma_ranges[0].dr_len = bcm283x_memorysize; 1259 } 1260 #endif 1261 1262 1263 void 1264 bcm283x_platform_early_putchar(vaddr_t va, paddr_t pa, char c) 1265 { 1266 volatile uint32_t *uartaddr = 1267 cpu_earlydevice_va_p() ? 1268 (volatile uint32_t *)va : 1269 (volatile uint32_t *)pa; 1270 1271 while ((uartaddr[PL01XCOM_FR / 4] & PL01X_FR_TXFF) != 0) 1272 continue; 1273 1274 uartaddr[PL01XCOM_DR / 4] = c; 1275 1276 while ((uartaddr[PL01XCOM_FR / 4] & PL01X_FR_TXFE) == 0) 1277 continue; 1278 } 1279 1280 void 1281 bcm2835_platform_early_putchar(char c) 1282 { 1283 paddr_t pa = BCM2835_PERIPHERALS_BUS_TO_PHYS(BCM2835_UART0_BASE); 1284 vaddr_t va = BCM2835_IOPHYSTOVIRT(pa); 1285 1286 bcm283x_platform_early_putchar(va, pa, c); 1287 } 1288 1289 void 1290 bcm2836_platform_early_putchar(char c) 1291 { 1292 paddr_t pa = BCM2836_PERIPHERALS_BUS_TO_PHYS(BCM2835_UART0_BASE); 1293 vaddr_t va = BCM2835_IOPHYSTOVIRT(pa); 1294 1295 bcm283x_platform_early_putchar(va, pa, c); 1296 } 1297 1298 #define BCM283x_REF_FREQ 19200000 1299 1300 void 1301 bcm2837_platform_early_putchar(char c) 1302 { 1303 #define AUCONSADDR_PA BCM2836_PERIPHERALS_BUS_TO_PHYS(BCM2835_AUX_UART_BASE) 1304 #define AUCONSADDR_VA BCM2835_IOPHYSTOVIRT(AUCONSADDR_PA) 1305 volatile uint32_t *uartaddr = 1306 cpu_earlydevice_va_p() ? 1307 (volatile uint32_t *)AUCONSADDR_VA : 1308 (volatile uint32_t *)AUCONSADDR_PA; 1309 1310 while ((uartaddr[com_lsr] & LSR_TXRDY) == 0) 1311 ; 1312 1313 uartaddr[com_data] = c; 1314 } 1315 1316 static void 1317 bcm283x_platform_device_register(device_t dev, void *aux) 1318 { 1319 prop_dictionary_t dict = device_properties(dev); 1320 1321 if (device_is_a(dev, "bcmdmac") && 1322 vcprop_tag_success_p(&vb.vbt_dmachan.tag)) { 1323 prop_dictionary_set_uint32(dict, 1324 "chanmask", vb.vbt_dmachan.mask); 1325 } 1326 #if NSDHC > 0 1327 if (booted_device == NULL && 1328 device_is_a(dev, "ld") && 1329 device_is_a(device_parent(dev), "sdmmc")) { 1330 booted_partition = 0; 1331 booted_device = dev; 1332 } 1333 #endif 1334 if (device_is_a(dev, "usmsc") && 1335 vcprop_tag_success_p(&vb.vbt_macaddr.tag)) { 1336 const uint8_t enaddr[ETHER_ADDR_LEN] = { 1337 (vb.vbt_macaddr.addr >> 0) & 0xff, 1338 (vb.vbt_macaddr.addr >> 8) & 0xff, 1339 (vb.vbt_macaddr.addr >> 16) & 0xff, 1340 (vb.vbt_macaddr.addr >> 24) & 0xff, 1341 (vb.vbt_macaddr.addr >> 32) & 0xff, 1342 (vb.vbt_macaddr.addr >> 40) & 0xff 1343 }; 1344 1345 prop_data_t pd = prop_data_create_data(enaddr, ETHER_ADDR_LEN); 1346 KASSERT(pd != NULL); 1347 if (prop_dictionary_set(device_properties(dev), "mac-address", 1348 pd) == false) { 1349 aprint_error_dev(dev, 1350 "WARNING: Unable to set mac-address property\n"); 1351 } 1352 prop_object_release(pd); 1353 } 1354 1355 #if NGENFB > 0 1356 if (device_is_a(dev, "genfb")) { 1357 char *ptr; 1358 1359 bcmgenfb_set_console_dev(dev); 1360 bcmgenfb_set_ioctl(&rpi_ioctl); 1361 #ifdef DDB 1362 db_trap_callback = bcmgenfb_ddb_trap_callback; 1363 #endif 1364 if (rpi_fb_init(dict, aux) == false) 1365 return; 1366 if (get_bootconf_option(boot_args, "console", 1367 BOOTOPT_TYPE_STRING, &ptr) && strncmp(ptr, "fb", 2) == 0) { 1368 prop_dictionary_set_bool(dict, "is_console", true); 1369 #if NUKBD > 0 1370 /* allow ukbd to be the console keyboard */ 1371 ukbd_cnattach(); 1372 #endif 1373 } else { 1374 prop_dictionary_set_bool(dict, "is_console", false); 1375 } 1376 } 1377 #endif 1378 } 1379 1380 static u_int 1381 bcm283x_platform_uart_freq(void) 1382 { 1383 1384 return uart_clk; 1385 } 1386 1387 #if defined(SOC_BCM2835) 1388 static const struct arm_platform bcm2835_platform = { 1389 .devmap = bcm2835_platform_devmap, 1390 .bootstrap = bcm2835_platform_bootstrap, 1391 .init_attach_args = bcm2835_platform_init_attach_args, 1392 .early_putchar = bcm2835_platform_early_putchar, 1393 .device_register = bcm283x_platform_device_register, 1394 .reset = bcm2835_system_reset, 1395 .delay = bcm2835_tmr_delay, 1396 .uart_freq = bcm283x_platform_uart_freq, 1397 }; 1398 1399 ARM_PLATFORM(bcm2835, "brcm,bcm2835", &bcm2835_platform); 1400 #endif 1401 1402 #if defined(SOC_BCM2836) 1403 static u_int 1404 bcm2837_platform_uart_freq(void) 1405 { 1406 1407 return core_clk * 2; 1408 } 1409 1410 static const struct arm_platform bcm2836_platform = { 1411 .devmap = bcm2836_platform_devmap, 1412 .bootstrap = bcm2836_platform_bootstrap, 1413 .init_attach_args = bcm2836_platform_init_attach_args, 1414 .early_putchar = bcm2836_platform_early_putchar, 1415 .device_register = bcm283x_platform_device_register, 1416 .reset = bcm2835_system_reset, 1417 .delay = gtmr_delay, 1418 .uart_freq = bcm283x_platform_uart_freq, 1419 }; 1420 1421 static const struct arm_platform bcm2837_platform = { 1422 .devmap = bcm2836_platform_devmap, 1423 .bootstrap = bcm2836_platform_bootstrap, 1424 .init_attach_args = bcm2836_platform_init_attach_args, 1425 .early_putchar = bcm2837_platform_early_putchar, 1426 .device_register = bcm283x_platform_device_register, 1427 .reset = bcm2835_system_reset, 1428 .delay = gtmr_delay, 1429 .uart_freq = bcm2837_platform_uart_freq, 1430 }; 1431 1432 ARM_PLATFORM(bcm2836, "brcm,bcm2836", &bcm2836_platform); 1433 ARM_PLATFORM(bcm2837, "brcm,bcm2837", &bcm2837_platform); 1434 #endif 1435
Indexes created Thu Oct 02 14:10:14 GMT 2025