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