1 /*- 2 * Copyright (c) 2013 The FreeBSD Foundation 3 * 4 * This software was developed by Benno Rice under sponsorship from 5 * the FreeBSD Foundation. 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #include <sys/cdefs.h> 29 __FBSDID("$FreeBSD$"); 30 31 #include <bootstrap.h> 32 #include <sys/endian.h> 33 #include <sys/param.h> 34 #include <stand.h> 35 36 #include <efi.h> 37 #include <efilib.h> 38 #include <efiuga.h> 39 #include <efipciio.h> 40 #include <Protocol/EdidActive.h> 41 #include <Protocol/EdidDiscovered.h> 42 #include <machine/metadata.h> 43 44 #include "bootstrap.h" 45 #include "framebuffer.h" 46 47 static EFI_GUID conout_guid = EFI_CONSOLE_OUT_DEVICE_GUID; 48 EFI_GUID gop_guid = EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID; 49 static EFI_GUID pciio_guid = EFI_PCI_IO_PROTOCOL_GUID; 50 static EFI_GUID uga_guid = EFI_UGA_DRAW_PROTOCOL_GUID; 51 static EFI_GUID active_edid_guid = EFI_EDID_ACTIVE_PROTOCOL_GUID; 52 static EFI_GUID discovered_edid_guid = EFI_EDID_DISCOVERED_PROTOCOL_GUID; 53 static EFI_HANDLE gop_handle; 54 55 /* Cached EDID. */ 56 struct vesa_edid_info *edid_info = NULL; 57 58 static EFI_GRAPHICS_OUTPUT *gop; 59 static EFI_UGA_DRAW_PROTOCOL *uga; 60 61 static struct named_resolution { 62 const char *name; 63 const char *alias; 64 unsigned int width; 65 unsigned int height; 66 } resolutions[] = { 67 { 68 .name = "480p", 69 .width = 640, 70 .height = 480, 71 }, 72 { 73 .name = "720p", 74 .width = 1280, 75 .height = 720, 76 }, 77 { 78 .name = "1080p", 79 .width = 1920, 80 .height = 1080, 81 }, 82 { 83 .name = "2160p", 84 .alias = "4k", 85 .width = 3840, 86 .height = 2160, 87 }, 88 { 89 .name = "5k", 90 .width = 5120, 91 .height = 2880, 92 } 93 }; 94 95 static u_int 96 efifb_color_depth(struct efi_fb *efifb) 97 { 98 uint32_t mask; 99 u_int depth; 100 101 mask = efifb->fb_mask_red | efifb->fb_mask_green | 102 efifb->fb_mask_blue | efifb->fb_mask_reserved; 103 if (mask == 0) 104 return (0); 105 for (depth = 1; mask != 1; depth++) 106 mask >>= 1; 107 return (depth); 108 } 109 110 static int 111 efifb_mask_from_pixfmt(struct efi_fb *efifb, EFI_GRAPHICS_PIXEL_FORMAT pixfmt, 112 EFI_PIXEL_BITMASK *pixinfo) 113 { 114 int result; 115 116 result = 0; 117 switch (pixfmt) { 118 case PixelRedGreenBlueReserved8BitPerColor: 119 case PixelBltOnly: 120 efifb->fb_mask_red = 0x000000ff; 121 efifb->fb_mask_green = 0x0000ff00; 122 efifb->fb_mask_blue = 0x00ff0000; 123 efifb->fb_mask_reserved = 0xff000000; 124 break; 125 case PixelBlueGreenRedReserved8BitPerColor: 126 efifb->fb_mask_red = 0x00ff0000; 127 efifb->fb_mask_green = 0x0000ff00; 128 efifb->fb_mask_blue = 0x000000ff; 129 efifb->fb_mask_reserved = 0xff000000; 130 break; 131 case PixelBitMask: 132 efifb->fb_mask_red = pixinfo->RedMask; 133 efifb->fb_mask_green = pixinfo->GreenMask; 134 efifb->fb_mask_blue = pixinfo->BlueMask; 135 efifb->fb_mask_reserved = pixinfo->ReservedMask; 136 break; 137 default: 138 result = 1; 139 break; 140 } 141 return (result); 142 } 143 144 static int 145 efifb_from_gop(struct efi_fb *efifb, EFI_GRAPHICS_OUTPUT_PROTOCOL_MODE *mode, 146 EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *info) 147 { 148 int result; 149 150 efifb->fb_addr = mode->FrameBufferBase; 151 efifb->fb_size = mode->FrameBufferSize; 152 efifb->fb_height = info->VerticalResolution; 153 efifb->fb_width = info->HorizontalResolution; 154 efifb->fb_stride = info->PixelsPerScanLine; 155 result = efifb_mask_from_pixfmt(efifb, info->PixelFormat, 156 &info->PixelInformation); 157 return (result); 158 } 159 160 static ssize_t 161 efifb_uga_find_pixel(EFI_UGA_DRAW_PROTOCOL *uga, u_int line, 162 EFI_PCI_IO_PROTOCOL *pciio, uint64_t addr, uint64_t size) 163 { 164 EFI_UGA_PIXEL pix0, pix1; 165 uint8_t *data1, *data2; 166 size_t count, maxcount = 1024; 167 ssize_t ofs; 168 EFI_STATUS status; 169 u_int idx; 170 171 status = uga->Blt(uga, &pix0, EfiUgaVideoToBltBuffer, 172 0, line, 0, 0, 1, 1, 0); 173 if (EFI_ERROR(status)) { 174 printf("UGA BLT operation failed (video->buffer)"); 175 return (-1); 176 } 177 pix1.Red = ~pix0.Red; 178 pix1.Green = ~pix0.Green; 179 pix1.Blue = ~pix0.Blue; 180 pix1.Reserved = 0; 181 182 data1 = calloc(maxcount, 2); 183 if (data1 == NULL) { 184 printf("Unable to allocate memory"); 185 return (-1); 186 } 187 data2 = data1 + maxcount; 188 189 ofs = 0; 190 while (size > 0) { 191 count = min(size, maxcount); 192 193 status = pciio->Mem.Read(pciio, EfiPciIoWidthUint32, 194 EFI_PCI_IO_PASS_THROUGH_BAR, addr + ofs, count >> 2, 195 data1); 196 if (EFI_ERROR(status)) { 197 printf("Error reading frame buffer (before)"); 198 goto fail; 199 } 200 status = uga->Blt(uga, &pix1, EfiUgaBltBufferToVideo, 201 0, 0, 0, line, 1, 1, 0); 202 if (EFI_ERROR(status)) { 203 printf("UGA BLT operation failed (modify)"); 204 goto fail; 205 } 206 status = pciio->Mem.Read(pciio, EfiPciIoWidthUint32, 207 EFI_PCI_IO_PASS_THROUGH_BAR, addr + ofs, count >> 2, 208 data2); 209 if (EFI_ERROR(status)) { 210 printf("Error reading frame buffer (after)"); 211 goto fail; 212 } 213 status = uga->Blt(uga, &pix0, EfiUgaBltBufferToVideo, 214 0, 0, 0, line, 1, 1, 0); 215 if (EFI_ERROR(status)) { 216 printf("UGA BLT operation failed (restore)"); 217 goto fail; 218 } 219 for (idx = 0; idx < count; idx++) { 220 if (data1[idx] != data2[idx]) { 221 free(data1); 222 return (ofs + (idx & ~3)); 223 } 224 } 225 ofs += count; 226 size -= count; 227 } 228 printf("No change detected in frame buffer"); 229 230 fail: 231 printf(" -- error %lu\n", EFI_ERROR_CODE(status)); 232 free(data1); 233 return (-1); 234 } 235 236 static EFI_PCI_IO_PROTOCOL * 237 efifb_uga_get_pciio(void) 238 { 239 EFI_PCI_IO_PROTOCOL *pciio; 240 EFI_HANDLE *buf, *hp; 241 EFI_STATUS status; 242 UINTN bufsz; 243 244 /* Get all handles that support the UGA protocol. */ 245 bufsz = 0; 246 status = BS->LocateHandle(ByProtocol, &uga_guid, NULL, &bufsz, NULL); 247 if (status != EFI_BUFFER_TOO_SMALL) 248 return (NULL); 249 buf = malloc(bufsz); 250 status = BS->LocateHandle(ByProtocol, &uga_guid, NULL, &bufsz, buf); 251 if (status != EFI_SUCCESS) { 252 free(buf); 253 return (NULL); 254 } 255 bufsz /= sizeof(EFI_HANDLE); 256 257 /* Get the PCI I/O interface of the first handle that supports it. */ 258 pciio = NULL; 259 for (hp = buf; hp < buf + bufsz; hp++) { 260 status = OpenProtocolByHandle(*hp, &pciio_guid, 261 (void **)&pciio); 262 if (status == EFI_SUCCESS) { 263 free(buf); 264 return (pciio); 265 } 266 } 267 free(buf); 268 return (NULL); 269 } 270 271 static EFI_STATUS 272 efifb_uga_locate_framebuffer(EFI_PCI_IO_PROTOCOL *pciio, uint64_t *addrp, 273 uint64_t *sizep) 274 { 275 uint8_t *resattr; 276 uint64_t addr, size; 277 EFI_STATUS status; 278 u_int bar; 279 280 if (pciio == NULL) 281 return (EFI_DEVICE_ERROR); 282 283 /* Attempt to get the frame buffer address (imprecise). */ 284 *addrp = 0; 285 *sizep = 0; 286 for (bar = 0; bar < 6; bar++) { 287 status = pciio->GetBarAttributes(pciio, bar, NULL, 288 (void **)&resattr); 289 if (status != EFI_SUCCESS) 290 continue; 291 /* XXX magic offsets and constants. */ 292 if (resattr[0] == 0x87 && resattr[3] == 0) { 293 /* 32-bit address space descriptor (MEMIO) */ 294 addr = le32dec(resattr + 10); 295 size = le32dec(resattr + 22); 296 } else if (resattr[0] == 0x8a && resattr[3] == 0) { 297 /* 64-bit address space descriptor (MEMIO) */ 298 addr = le64dec(resattr + 14); 299 size = le64dec(resattr + 38); 300 } else { 301 addr = 0; 302 size = 0; 303 } 304 BS->FreePool(resattr); 305 if (addr == 0 || size == 0) 306 continue; 307 308 /* We assume the largest BAR is the frame buffer. */ 309 if (size > *sizep) { 310 *addrp = addr; 311 *sizep = size; 312 } 313 } 314 return ((*addrp == 0 || *sizep == 0) ? EFI_DEVICE_ERROR : 0); 315 } 316 317 static int 318 efifb_from_uga(struct efi_fb *efifb) 319 { 320 EFI_PCI_IO_PROTOCOL *pciio; 321 char *ev, *p; 322 EFI_STATUS status; 323 ssize_t offset; 324 uint64_t fbaddr; 325 uint32_t horiz, vert, stride; 326 uint32_t np, depth, refresh; 327 328 status = uga->GetMode(uga, &horiz, &vert, &depth, &refresh); 329 if (EFI_ERROR(status)) 330 return (1); 331 efifb->fb_height = vert; 332 efifb->fb_width = horiz; 333 /* Paranoia... */ 334 if (efifb->fb_height == 0 || efifb->fb_width == 0) 335 return (1); 336 337 /* The color masks are fixed AFAICT. */ 338 efifb_mask_from_pixfmt(efifb, PixelBlueGreenRedReserved8BitPerColor, 339 NULL); 340 341 /* pciio can be NULL on return! */ 342 pciio = efifb_uga_get_pciio(); 343 344 /* Try to find the frame buffer. */ 345 status = efifb_uga_locate_framebuffer(pciio, &efifb->fb_addr, 346 &efifb->fb_size); 347 if (EFI_ERROR(status)) { 348 efifb->fb_addr = 0; 349 efifb->fb_size = 0; 350 } 351 352 /* 353 * There's no reliable way to detect the frame buffer or the 354 * offset within the frame buffer of the visible region, nor 355 * the stride. Our only option is to look at the system and 356 * fill in the blanks based on that. Luckily, UGA was mostly 357 * only used on Apple hardware. 358 */ 359 offset = -1; 360 ev = getenv("smbios.system.maker"); 361 if (ev != NULL && !strcmp(ev, "Apple Inc.")) { 362 ev = getenv("smbios.system.product"); 363 if (ev != NULL && !strcmp(ev, "iMac7,1")) { 364 /* These are the expected values we should have. */ 365 horiz = 1680; 366 vert = 1050; 367 fbaddr = 0xc0000000; 368 /* These are the missing bits. */ 369 offset = 0x10000; 370 stride = 1728; 371 } else if (ev != NULL && !strcmp(ev, "MacBook3,1")) { 372 /* These are the expected values we should have. */ 373 horiz = 1280; 374 vert = 800; 375 fbaddr = 0xc0000000; 376 /* These are the missing bits. */ 377 offset = 0x0; 378 stride = 2048; 379 } 380 } 381 382 /* 383 * If this is hardware we know, make sure that it looks familiar 384 * before we accept our hardcoded values. 385 */ 386 if (offset >= 0 && efifb->fb_width == horiz && 387 efifb->fb_height == vert && efifb->fb_addr == fbaddr) { 388 efifb->fb_addr += offset; 389 efifb->fb_size -= offset; 390 efifb->fb_stride = stride; 391 return (0); 392 } else if (offset >= 0) { 393 printf("Hardware make/model known, but graphics not " 394 "as expected.\n"); 395 printf("Console may not work!\n"); 396 } 397 398 /* 399 * The stride is equal or larger to the width. Often it's the 400 * next larger power of two. We'll start with that... 401 */ 402 efifb->fb_stride = efifb->fb_width; 403 do { 404 np = efifb->fb_stride & (efifb->fb_stride - 1); 405 if (np) { 406 efifb->fb_stride |= (np - 1); 407 efifb->fb_stride++; 408 } 409 } while (np); 410 411 ev = getenv("hw.efifb.address"); 412 if (ev == NULL) { 413 if (efifb->fb_addr == 0) { 414 printf("Please set hw.efifb.address and " 415 "hw.efifb.stride.\n"); 416 return (1); 417 } 418 419 /* 420 * The visible part of the frame buffer may not start at 421 * offset 0, so try to detect it. Note that we may not 422 * always be able to read from the frame buffer, which 423 * means that we may not be able to detect anything. In 424 * that case, we would take a long time scanning for a 425 * pixel change in the frame buffer, which would have it 426 * appear that we're hanging, so we limit the scan to 427 * 1/256th of the frame buffer. This number is mostly 428 * based on PR 202730 and the fact that on a MacBoook, 429 * where we can't read from the frame buffer the offset 430 * of the visible region is 0. In short: we want to scan 431 * enough to handle all adapters that have an offset 432 * larger than 0 and we want to scan as little as we can 433 * to not appear to hang when we can't read from the 434 * frame buffer. 435 */ 436 offset = efifb_uga_find_pixel(uga, 0, pciio, efifb->fb_addr, 437 efifb->fb_size >> 8); 438 if (offset == -1) { 439 printf("Unable to reliably detect frame buffer.\n"); 440 } else if (offset > 0) { 441 efifb->fb_addr += offset; 442 efifb->fb_size -= offset; 443 } 444 } else { 445 offset = 0; 446 efifb->fb_size = efifb->fb_height * efifb->fb_stride * 4; 447 efifb->fb_addr = strtoul(ev, &p, 0); 448 if (*p != '\0') 449 return (1); 450 } 451 452 ev = getenv("hw.efifb.stride"); 453 if (ev == NULL) { 454 if (pciio != NULL && offset != -1) { 455 /* Determine the stride. */ 456 offset = efifb_uga_find_pixel(uga, 1, pciio, 457 efifb->fb_addr, horiz * 8); 458 if (offset != -1) 459 efifb->fb_stride = offset >> 2; 460 } else { 461 printf("Unable to reliably detect the stride.\n"); 462 } 463 } else { 464 efifb->fb_stride = strtoul(ev, &p, 0); 465 if (*p != '\0') 466 return (1); 467 } 468 469 /* 470 * We finalized on the stride, so recalculate the size of the 471 * frame buffer. 472 */ 473 efifb->fb_size = efifb->fb_height * efifb->fb_stride * 4; 474 return (0); 475 } 476 477 /* 478 * Fetch EDID info. Caller must free the buffer. 479 */ 480 static struct vesa_edid_info * 481 efifb_gop_get_edid(EFI_HANDLE h) 482 { 483 const uint8_t magic[] = EDID_MAGIC; 484 EFI_EDID_ACTIVE_PROTOCOL *edid; 485 struct vesa_edid_info *edid_infop; 486 EFI_GUID *guid; 487 EFI_STATUS status; 488 size_t size; 489 490 guid = &active_edid_guid; 491 status = BS->OpenProtocol(h, guid, (void **)&edid, IH, NULL, 492 EFI_OPEN_PROTOCOL_GET_PROTOCOL); 493 if (status != EFI_SUCCESS || 494 edid->SizeOfEdid == 0) { 495 guid = &discovered_edid_guid; 496 status = BS->OpenProtocol(h, guid, (void **)&edid, IH, NULL, 497 EFI_OPEN_PROTOCOL_GET_PROTOCOL); 498 if (status != EFI_SUCCESS || 499 edid->SizeOfEdid == 0) 500 return (NULL); 501 } 502 503 size = MAX(sizeof(*edid_infop), edid->SizeOfEdid); 504 505 edid_infop = calloc(1, size); 506 if (edid_infop == NULL) 507 return (NULL); 508 509 memcpy(edid_infop, edid->Edid, edid->SizeOfEdid); 510 511 /* Validate EDID */ 512 if (memcmp(edid_infop, magic, sizeof (magic)) != 0) 513 goto error; 514 515 if (edid_infop->header.version != 1) 516 goto error; 517 518 return (edid_infop); 519 error: 520 free(edid_infop); 521 return (NULL); 522 } 523 524 static bool 525 efifb_get_edid(edid_res_list_t *res) 526 { 527 bool rv = false; 528 529 if (edid_info == NULL) 530 edid_info = efifb_gop_get_edid(gop_handle); 531 532 if (edid_info != NULL) 533 rv = gfx_get_edid_resolution(edid_info, res); 534 535 return (rv); 536 } 537 538 bool 539 efi_has_gop(void) 540 { 541 EFI_STATUS status; 542 EFI_HANDLE *hlist; 543 UINTN hsize; 544 545 hsize = 0; 546 hlist = NULL; 547 status = BS->LocateHandle(ByProtocol, &gop_guid, NULL, &hsize, hlist); 548 549 return (status == EFI_BUFFER_TOO_SMALL); 550 } 551 552 553 int 554 efi_find_framebuffer(teken_gfx_t *gfx_state) 555 { 556 EFI_HANDLE *hlist; 557 UINTN nhandles, i, hsize; 558 struct efi_fb efifb; 559 EFI_STATUS status; 560 int rv; 561 562 gfx_state->tg_fb_type = FB_TEXT; 563 564 hsize = 0; 565 hlist = NULL; 566 status = BS->LocateHandle(ByProtocol, &gop_guid, NULL, &hsize, hlist); 567 if (status == EFI_BUFFER_TOO_SMALL) { 568 hlist = malloc(hsize); 569 if (hlist == NULL) 570 return (ENOMEM); 571 status = BS->LocateHandle(ByProtocol, &gop_guid, NULL, &hsize, 572 hlist); 573 if (EFI_ERROR(status)) 574 free(hlist); 575 } 576 if (EFI_ERROR(status)) 577 return (efi_status_to_errno(status)); 578 579 nhandles = hsize / sizeof(*hlist); 580 581 /* 582 * Search for ConOut protocol, if not found, use first handle. 583 */ 584 gop_handle = NULL; 585 for (i = 0; i < nhandles; i++) { 586 EFI_GRAPHICS_OUTPUT *tgop; 587 void *dummy; 588 589 status = OpenProtocolByHandle(hlist[i], &gop_guid, (void **)&tgop); 590 if (status != EFI_SUCCESS) 591 continue; 592 593 if (tgop->Mode->Info->PixelFormat == PixelBltOnly || 594 tgop->Mode->Info->PixelFormat >= PixelFormatMax) 595 continue; 596 597 status = OpenProtocolByHandle(hlist[i], &conout_guid, &dummy); 598 if (status == EFI_SUCCESS) { 599 gop_handle = hlist[i]; 600 gop = tgop; 601 break; 602 } else if (gop_handle == NULL) { 603 gop_handle = hlist[i]; 604 gop = tgop; 605 } 606 } 607 608 free(hlist); 609 610 if (gop_handle != NULL) { 611 gfx_state->tg_fb_type = FB_GOP; 612 gfx_state->tg_private = gop; 613 if (edid_info == NULL) 614 edid_info = efifb_gop_get_edid(gop_handle); 615 } else { 616 status = BS->LocateProtocol(&uga_guid, NULL, (VOID **)&uga); 617 if (status == EFI_SUCCESS) { 618 gfx_state->tg_fb_type = FB_UGA; 619 gfx_state->tg_private = uga; 620 } else { 621 return (1); 622 } 623 } 624 625 switch (gfx_state->tg_fb_type) { 626 case FB_GOP: 627 rv = efifb_from_gop(&efifb, gop->Mode, gop->Mode->Info); 628 break; 629 630 case FB_UGA: 631 rv = efifb_from_uga(&efifb); 632 break; 633 634 default: 635 return (1); 636 } 637 638 gfx_state->tg_fb.fb_addr = efifb.fb_addr; 639 gfx_state->tg_fb.fb_size = efifb.fb_size; 640 gfx_state->tg_fb.fb_height = efifb.fb_height; 641 gfx_state->tg_fb.fb_width = efifb.fb_width; 642 gfx_state->tg_fb.fb_stride = efifb.fb_stride; 643 gfx_state->tg_fb.fb_mask_red = efifb.fb_mask_red; 644 gfx_state->tg_fb.fb_mask_green = efifb.fb_mask_green; 645 gfx_state->tg_fb.fb_mask_blue = efifb.fb_mask_blue; 646 gfx_state->tg_fb.fb_mask_reserved = efifb.fb_mask_reserved; 647 648 gfx_state->tg_fb.fb_bpp = fls(efifb.fb_mask_red | efifb.fb_mask_green | 649 efifb.fb_mask_blue | efifb.fb_mask_reserved); 650 651 if (gfx_state->tg_shadow_fb != NULL) 652 BS->FreePages((EFI_PHYSICAL_ADDRESS)gfx_state->tg_shadow_fb, 653 gfx_state->tg_shadow_sz); 654 gfx_state->tg_shadow_sz = 655 EFI_SIZE_TO_PAGES(efifb.fb_height * efifb.fb_width * 656 sizeof(EFI_GRAPHICS_OUTPUT_BLT_PIXEL)); 657 status = BS->AllocatePages(AllocateMaxAddress, EfiLoaderData, 658 gfx_state->tg_shadow_sz, 659 (EFI_PHYSICAL_ADDRESS *)&gfx_state->tg_shadow_fb); 660 if (status != EFI_SUCCESS) 661 gfx_state->tg_shadow_fb = NULL; 662 663 return (0); 664 } 665 666 static void 667 print_efifb(int mode, struct efi_fb *efifb, int verbose) 668 { 669 u_int depth; 670 671 if (mode >= 0) 672 printf("mode %d: ", mode); 673 depth = efifb_color_depth(efifb); 674 printf("%ux%ux%u, stride=%u", efifb->fb_width, efifb->fb_height, 675 depth, efifb->fb_stride); 676 if (verbose) { 677 printf("\n frame buffer: address=%jx, size=%jx", 678 (uintmax_t)efifb->fb_addr, (uintmax_t)efifb->fb_size); 679 printf("\n color mask: R=%08x, G=%08x, B=%08x\n", 680 efifb->fb_mask_red, efifb->fb_mask_green, 681 efifb->fb_mask_blue); 682 } 683 } 684 685 static bool 686 efi_resolution_compare(struct named_resolution *res, const char *cmp) 687 { 688 689 if (strcasecmp(res->name, cmp) == 0) 690 return (true); 691 if (res->alias != NULL && strcasecmp(res->alias, cmp) == 0) 692 return (true); 693 return (false); 694 } 695 696 697 static void 698 efi_get_max_resolution(int *width, int *height) 699 { 700 struct named_resolution *res; 701 char *maxres; 702 char *height_start, *width_start; 703 int idx; 704 705 *width = *height = 0; 706 maxres = getenv("efi_max_resolution"); 707 /* No max_resolution set? Bail out; choose highest resolution */ 708 if (maxres == NULL) 709 return; 710 /* See if it matches one of our known resolutions */ 711 for (idx = 0; idx < nitems(resolutions); ++idx) { 712 res = &resolutions[idx]; 713 if (efi_resolution_compare(res, maxres)) { 714 *width = res->width; 715 *height = res->height; 716 return; 717 } 718 } 719 /* Not a known resolution, try to parse it; make a copy we can modify */ 720 maxres = strdup(maxres); 721 if (maxres == NULL) 722 return; 723 height_start = strchr(maxres, 'x'); 724 if (height_start == NULL) { 725 free(maxres); 726 return; 727 } 728 width_start = maxres; 729 *height_start++ = 0; 730 /* Errors from this will effectively mean "no max" */ 731 *width = (int)strtol(width_start, NULL, 0); 732 *height = (int)strtol(height_start, NULL, 0); 733 free(maxres); 734 } 735 736 static int 737 gop_autoresize(void) 738 { 739 struct efi_fb efifb; 740 EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *info; 741 EFI_STATUS status; 742 UINTN infosz; 743 UINT32 best_mode, currdim, maxdim, mode; 744 int height, max_height, max_width, width; 745 746 best_mode = maxdim = 0; 747 efi_get_max_resolution(&max_width, &max_height); 748 for (mode = 0; mode < gop->Mode->MaxMode; mode++) { 749 status = gop->QueryMode(gop, mode, &infosz, &info); 750 if (EFI_ERROR(status)) 751 continue; 752 efifb_from_gop(&efifb, gop->Mode, info); 753 width = info->HorizontalResolution; 754 height = info->VerticalResolution; 755 currdim = width * height; 756 if (currdim > maxdim) { 757 if ((max_width != 0 && width > max_width) || 758 (max_height != 0 && height > max_height)) 759 continue; 760 maxdim = currdim; 761 best_mode = mode; 762 } 763 } 764 765 if (maxdim != 0) { 766 status = gop->SetMode(gop, best_mode); 767 if (EFI_ERROR(status)) { 768 snprintf(command_errbuf, sizeof(command_errbuf), 769 "gop_autoresize: Unable to set mode to %u (error=%lu)", 770 mode, EFI_ERROR_CODE(status)); 771 return (CMD_ERROR); 772 } 773 (void) cons_update_mode(true); 774 } 775 return (CMD_OK); 776 } 777 778 static int 779 text_autoresize() 780 { 781 SIMPLE_TEXT_OUTPUT_INTERFACE *conout; 782 EFI_STATUS status; 783 UINTN i, max_dim, best_mode, cols, rows; 784 785 conout = ST->ConOut; 786 max_dim = best_mode = 0; 787 for (i = 0; i < conout->Mode->MaxMode; i++) { 788 status = conout->QueryMode(conout, i, &cols, &rows); 789 if (EFI_ERROR(status)) 790 continue; 791 if (cols * rows > max_dim) { 792 max_dim = cols * rows; 793 best_mode = i; 794 } 795 } 796 if (max_dim > 0) 797 conout->SetMode(conout, best_mode); 798 (void) cons_update_mode(true); 799 return (CMD_OK); 800 } 801 802 static int 803 uga_autoresize(void) 804 { 805 806 return (text_autoresize()); 807 } 808 809 COMMAND_SET(efi_autoresize, "efi-autoresizecons", "EFI Auto-resize Console", command_autoresize); 810 811 static int 812 command_autoresize(int argc, char *argv[]) 813 { 814 char *textmode; 815 816 textmode = getenv("hw.vga.textmode"); 817 /* If it's set and non-zero, we'll select a console mode instead */ 818 if (textmode != NULL && strcmp(textmode, "0") != 0) 819 return (text_autoresize()); 820 821 if (gop != NULL) 822 return (gop_autoresize()); 823 824 if (uga != NULL) 825 return (uga_autoresize()); 826 827 snprintf(command_errbuf, sizeof(command_errbuf), 828 "%s: Neither Graphics Output Protocol nor Universal Graphics Adapter present", 829 argv[0]); 830 831 /* 832 * Default to text_autoresize if we have neither GOP or UGA. This won't 833 * give us the most ideal resolution, but it will at least leave us 834 * functional rather than failing the boot for an objectively bad 835 * reason. 836 */ 837 return (text_autoresize()); 838 } 839 840 COMMAND_SET(gop, "gop", "graphics output protocol", command_gop); 841 842 static int 843 command_gop(int argc, char *argv[]) 844 { 845 struct efi_fb efifb; 846 EFI_STATUS status; 847 u_int mode; 848 849 if (gop == NULL) { 850 snprintf(command_errbuf, sizeof(command_errbuf), 851 "%s: Graphics Output Protocol not present", argv[0]); 852 return (CMD_ERROR); 853 } 854 855 if (argc < 2) 856 goto usage; 857 858 if (!strcmp(argv[1], "set")) { 859 char *cp; 860 861 if (argc != 3) 862 goto usage; 863 mode = strtol(argv[2], &cp, 0); 864 if (cp[0] != '\0') { 865 sprintf(command_errbuf, "mode is an integer"); 866 return (CMD_ERROR); 867 } 868 status = gop->SetMode(gop, mode); 869 if (EFI_ERROR(status)) { 870 snprintf(command_errbuf, sizeof(command_errbuf), 871 "%s: Unable to set mode to %u (error=%lu)", 872 argv[0], mode, EFI_ERROR_CODE(status)); 873 return (CMD_ERROR); 874 } 875 (void) cons_update_mode(true); 876 } else if (strcmp(argv[1], "off") == 0) { 877 (void) cons_update_mode(false); 878 } else if (strcmp(argv[1], "get") == 0) { 879 edid_res_list_t res; 880 881 if (argc != 2) 882 goto usage; 883 TAILQ_INIT(&res); 884 efifb_from_gop(&efifb, gop->Mode, gop->Mode->Info); 885 if (efifb_get_edid(&res)) { 886 struct resolution *rp; 887 888 printf("EDID"); 889 while ((rp = TAILQ_FIRST(&res)) != NULL) { 890 printf(" %dx%d", rp->width, rp->height); 891 TAILQ_REMOVE(&res, rp, next); 892 free(rp); 893 } 894 printf("\n"); 895 } else { 896 printf("no EDID information\n"); 897 } 898 print_efifb(gop->Mode->Mode, &efifb, 1); 899 printf("\n"); 900 } else if (!strcmp(argv[1], "list")) { 901 EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *info; 902 UINTN infosz; 903 904 if (argc != 2) 905 goto usage; 906 907 pager_open(); 908 for (mode = 0; mode < gop->Mode->MaxMode; mode++) { 909 status = gop->QueryMode(gop, mode, &infosz, &info); 910 if (EFI_ERROR(status)) 911 continue; 912 efifb_from_gop(&efifb, gop->Mode, info); 913 print_efifb(mode, &efifb, 0); 914 if (pager_output("\n")) 915 break; 916 } 917 pager_close(); 918 } 919 return (CMD_OK); 920 921 usage: 922 snprintf(command_errbuf, sizeof(command_errbuf), 923 "usage: %s [list | get | set <mode> | off]", argv[0]); 924 return (CMD_ERROR); 925 } 926 927 COMMAND_SET(uga, "uga", "universal graphics adapter", command_uga); 928 929 static int 930 command_uga(int argc, char *argv[]) 931 { 932 struct efi_fb efifb; 933 934 if (uga == NULL) { 935 snprintf(command_errbuf, sizeof(command_errbuf), 936 "%s: UGA Protocol not present", argv[0]); 937 return (CMD_ERROR); 938 } 939 940 if (argc != 1) 941 goto usage; 942 943 if (efifb_from_uga(&efifb) != CMD_OK) { 944 snprintf(command_errbuf, sizeof(command_errbuf), 945 "%s: Unable to get UGA information", argv[0]); 946 return (CMD_ERROR); 947 } 948 949 print_efifb(-1, &efifb, 1); 950 printf("\n"); 951 return (CMD_OK); 952 953 usage: 954 snprintf(command_errbuf, sizeof(command_errbuf), "usage: %s", argv[0]); 955 return (CMD_ERROR); 956 } 957