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 <bootstrap.h> 29 #include <sys/endian.h> 30 #include <sys/param.h> 31 #include <stand.h> 32 33 #include <efi.h> 34 #include <efilib.h> 35 #include <efiuga.h> 36 #include <efipciio.h> 37 #include <Protocol/EdidActive.h> 38 #include <Protocol/EdidDiscovered.h> 39 #include <machine/metadata.h> 40 41 #include "bootstrap.h" 42 #include "framebuffer.h" 43 44 static EFI_GUID conout_guid = EFI_CONSOLE_OUT_DEVICE_GUID; 45 EFI_GUID gop_guid = EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID; 46 static EFI_GUID pciio_guid = EFI_PCI_IO_PROTOCOL_GUID; 47 static EFI_GUID uga_guid = EFI_UGA_DRAW_PROTOCOL_GUID; 48 static EFI_GUID active_edid_guid = EFI_EDID_ACTIVE_PROTOCOL_GUID; 49 static EFI_GUID discovered_edid_guid = EFI_EDID_DISCOVERED_PROTOCOL_GUID; 50 static EFI_HANDLE gop_handle; 51 52 /* Cached EDID. */ 53 struct vesa_edid_info *edid_info = NULL; 54 55 static EFI_GRAPHICS_OUTPUT *gop; 56 static EFI_UGA_DRAW_PROTOCOL *uga; 57 58 static struct named_resolution { 59 const char *name; 60 const char *alias; 61 unsigned int width; 62 unsigned int height; 63 } resolutions[] = { 64 { 65 .name = "480p", 66 .width = 640, 67 .height = 480, 68 }, 69 { 70 .name = "720p", 71 .width = 1280, 72 .height = 720, 73 }, 74 { 75 .name = "1080p", 76 .width = 1920, 77 .height = 1080, 78 }, 79 { 80 .name = "1440p", 81 .width = 2560, 82 .height = 1440, 83 }, 84 { 85 .name = "2160p", 86 .alias = "4k", 87 .width = 3840, 88 .height = 2160, 89 }, 90 { 91 .name = "5k", 92 .width = 5120, 93 .height = 2880, 94 } 95 }; 96 97 static u_int 98 efifb_color_depth(struct efi_fb *efifb) 99 { 100 uint32_t mask; 101 u_int depth; 102 103 mask = efifb->fb_mask_red | efifb->fb_mask_green | 104 efifb->fb_mask_blue | efifb->fb_mask_reserved; 105 if (mask == 0) 106 return (0); 107 for (depth = 1; mask != 1; depth++) 108 mask >>= 1; 109 return (depth); 110 } 111 112 static int 113 efifb_mask_from_pixfmt(struct efi_fb *efifb, EFI_GRAPHICS_PIXEL_FORMAT pixfmt, 114 EFI_PIXEL_BITMASK *pixinfo) 115 { 116 int result; 117 118 result = 0; 119 switch (pixfmt) { 120 case PixelRedGreenBlueReserved8BitPerColor: 121 case PixelBltOnly: 122 efifb->fb_mask_red = 0x000000ff; 123 efifb->fb_mask_green = 0x0000ff00; 124 efifb->fb_mask_blue = 0x00ff0000; 125 efifb->fb_mask_reserved = 0xff000000; 126 break; 127 case PixelBlueGreenRedReserved8BitPerColor: 128 efifb->fb_mask_red = 0x00ff0000; 129 efifb->fb_mask_green = 0x0000ff00; 130 efifb->fb_mask_blue = 0x000000ff; 131 efifb->fb_mask_reserved = 0xff000000; 132 break; 133 case PixelBitMask: 134 efifb->fb_mask_red = pixinfo->RedMask; 135 efifb->fb_mask_green = pixinfo->GreenMask; 136 efifb->fb_mask_blue = pixinfo->BlueMask; 137 efifb->fb_mask_reserved = pixinfo->ReservedMask; 138 break; 139 default: 140 result = 1; 141 break; 142 } 143 return (result); 144 } 145 146 static int 147 efifb_from_gop(struct efi_fb *efifb, EFI_GRAPHICS_OUTPUT_PROTOCOL_MODE *mode, 148 EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *info) 149 { 150 int result; 151 152 efifb->fb_addr = mode->FrameBufferBase; 153 efifb->fb_size = mode->FrameBufferSize; 154 efifb->fb_height = info->VerticalResolution; 155 efifb->fb_width = info->HorizontalResolution; 156 efifb->fb_stride = info->PixelsPerScanLine; 157 result = efifb_mask_from_pixfmt(efifb, info->PixelFormat, 158 &info->PixelInformation); 159 return (result); 160 } 161 162 static ssize_t 163 efifb_uga_find_pixel(EFI_UGA_DRAW_PROTOCOL *uga, u_int line, 164 EFI_PCI_IO_PROTOCOL *pciio, uint64_t addr, uint64_t size) 165 { 166 EFI_UGA_PIXEL pix0, pix1; 167 uint8_t *data1, *data2; 168 size_t count, maxcount = 1024; 169 ssize_t ofs; 170 EFI_STATUS status; 171 u_int idx; 172 173 status = uga->Blt(uga, &pix0, EfiUgaVideoToBltBuffer, 174 0, line, 0, 0, 1, 1, 0); 175 if (EFI_ERROR(status)) { 176 printf("UGA BLT operation failed (video->buffer)"); 177 return (-1); 178 } 179 pix1.Red = ~pix0.Red; 180 pix1.Green = ~pix0.Green; 181 pix1.Blue = ~pix0.Blue; 182 pix1.Reserved = 0; 183 184 data1 = calloc(maxcount, 2); 185 if (data1 == NULL) { 186 printf("Unable to allocate memory"); 187 return (-1); 188 } 189 data2 = data1 + maxcount; 190 191 ofs = 0; 192 while (size > 0) { 193 count = min(size, maxcount); 194 195 status = pciio->Mem.Read(pciio, EfiPciIoWidthUint32, 196 EFI_PCI_IO_PASS_THROUGH_BAR, addr + ofs, count >> 2, 197 data1); 198 if (EFI_ERROR(status)) { 199 printf("Error reading frame buffer (before)"); 200 goto fail; 201 } 202 status = uga->Blt(uga, &pix1, EfiUgaBltBufferToVideo, 203 0, 0, 0, line, 1, 1, 0); 204 if (EFI_ERROR(status)) { 205 printf("UGA BLT operation failed (modify)"); 206 goto fail; 207 } 208 status = pciio->Mem.Read(pciio, EfiPciIoWidthUint32, 209 EFI_PCI_IO_PASS_THROUGH_BAR, addr + ofs, count >> 2, 210 data2); 211 if (EFI_ERROR(status)) { 212 printf("Error reading frame buffer (after)"); 213 goto fail; 214 } 215 status = uga->Blt(uga, &pix0, EfiUgaBltBufferToVideo, 216 0, 0, 0, line, 1, 1, 0); 217 if (EFI_ERROR(status)) { 218 printf("UGA BLT operation failed (restore)"); 219 goto fail; 220 } 221 for (idx = 0; idx < count; idx++) { 222 if (data1[idx] != data2[idx]) { 223 free(data1); 224 return (ofs + (idx & ~3)); 225 } 226 } 227 ofs += count; 228 size -= count; 229 } 230 printf("No change detected in frame buffer"); 231 232 fail: 233 printf(" -- error %lu\n", EFI_ERROR_CODE(status)); 234 free(data1); 235 return (-1); 236 } 237 238 static EFI_PCI_IO_PROTOCOL * 239 efifb_uga_get_pciio(void) 240 { 241 EFI_PCI_IO_PROTOCOL *pciio; 242 EFI_HANDLE *buf, *hp; 243 EFI_STATUS status; 244 UINTN bufsz; 245 246 /* Get all handles that support the UGA protocol. */ 247 bufsz = 0; 248 status = BS->LocateHandle(ByProtocol, &uga_guid, NULL, &bufsz, NULL); 249 if (status != EFI_BUFFER_TOO_SMALL) 250 return (NULL); 251 buf = malloc(bufsz); 252 status = BS->LocateHandle(ByProtocol, &uga_guid, NULL, &bufsz, buf); 253 if (status != EFI_SUCCESS) { 254 free(buf); 255 return (NULL); 256 } 257 bufsz /= sizeof(EFI_HANDLE); 258 259 /* Get the PCI I/O interface of the first handle that supports it. */ 260 pciio = NULL; 261 for (hp = buf; hp < buf + bufsz; hp++) { 262 status = OpenProtocolByHandle(*hp, &pciio_guid, 263 (void **)&pciio); 264 if (status == EFI_SUCCESS) { 265 free(buf); 266 return (pciio); 267 } 268 } 269 free(buf); 270 return (NULL); 271 } 272 273 static EFI_STATUS 274 efifb_uga_locate_framebuffer(EFI_PCI_IO_PROTOCOL *pciio, uint64_t *addrp, 275 uint64_t *sizep) 276 { 277 uint8_t *resattr; 278 uint64_t addr, size; 279 EFI_STATUS status; 280 u_int bar; 281 282 if (pciio == NULL) 283 return (EFI_DEVICE_ERROR); 284 285 /* Attempt to get the frame buffer address (imprecise). */ 286 *addrp = 0; 287 *sizep = 0; 288 for (bar = 0; bar < 6; bar++) { 289 status = pciio->GetBarAttributes(pciio, bar, NULL, 290 (void **)&resattr); 291 if (status != EFI_SUCCESS) 292 continue; 293 /* XXX magic offsets and constants. */ 294 if (resattr[0] == 0x87 && resattr[3] == 0) { 295 /* 32-bit address space descriptor (MEMIO) */ 296 addr = le32dec(resattr + 10); 297 size = le32dec(resattr + 22); 298 } else if (resattr[0] == 0x8a && resattr[3] == 0) { 299 /* 64-bit address space descriptor (MEMIO) */ 300 addr = le64dec(resattr + 14); 301 size = le64dec(resattr + 38); 302 } else { 303 addr = 0; 304 size = 0; 305 } 306 BS->FreePool(resattr); 307 if (addr == 0 || size == 0) 308 continue; 309 310 /* We assume the largest BAR is the frame buffer. */ 311 if (size > *sizep) { 312 *addrp = addr; 313 *sizep = size; 314 } 315 } 316 return ((*addrp == 0 || *sizep == 0) ? EFI_DEVICE_ERROR : 0); 317 } 318 319 static int 320 efifb_from_uga(struct efi_fb *efifb) 321 { 322 EFI_PCI_IO_PROTOCOL *pciio; 323 char *ev, *p; 324 EFI_STATUS status; 325 ssize_t offset; 326 uint64_t fbaddr; 327 uint32_t horiz, vert, stride; 328 uint32_t np, depth, refresh; 329 330 status = uga->GetMode(uga, &horiz, &vert, &depth, &refresh); 331 if (EFI_ERROR(status)) 332 return (1); 333 efifb->fb_height = vert; 334 efifb->fb_width = horiz; 335 /* Paranoia... */ 336 if (efifb->fb_height == 0 || efifb->fb_width == 0) 337 return (1); 338 339 /* The color masks are fixed AFAICT. */ 340 efifb_mask_from_pixfmt(efifb, PixelBlueGreenRedReserved8BitPerColor, 341 NULL); 342 343 /* pciio can be NULL on return! */ 344 pciio = efifb_uga_get_pciio(); 345 346 /* Try to find the frame buffer. */ 347 status = efifb_uga_locate_framebuffer(pciio, &efifb->fb_addr, 348 &efifb->fb_size); 349 if (EFI_ERROR(status)) { 350 efifb->fb_addr = 0; 351 efifb->fb_size = 0; 352 } 353 354 /* 355 * There's no reliable way to detect the frame buffer or the 356 * offset within the frame buffer of the visible region, nor 357 * the stride. Our only option is to look at the system and 358 * fill in the blanks based on that. Luckily, UGA was mostly 359 * only used on Apple hardware. 360 */ 361 offset = -1; 362 ev = getenv("smbios.system.maker"); 363 if (ev != NULL && !strcmp(ev, "Apple Inc.")) { 364 ev = getenv("smbios.system.product"); 365 if (ev != NULL && !strcmp(ev, "iMac7,1")) { 366 /* These are the expected values we should have. */ 367 horiz = 1680; 368 vert = 1050; 369 fbaddr = 0xc0000000; 370 /* These are the missing bits. */ 371 offset = 0x10000; 372 stride = 1728; 373 } else if (ev != NULL && !strcmp(ev, "MacBook3,1")) { 374 /* These are the expected values we should have. */ 375 horiz = 1280; 376 vert = 800; 377 fbaddr = 0xc0000000; 378 /* These are the missing bits. */ 379 offset = 0x0; 380 stride = 2048; 381 } 382 } 383 384 /* 385 * If this is hardware we know, make sure that it looks familiar 386 * before we accept our hardcoded values. 387 */ 388 if (offset >= 0 && efifb->fb_width == horiz && 389 efifb->fb_height == vert && efifb->fb_addr == fbaddr) { 390 efifb->fb_addr += offset; 391 efifb->fb_size -= offset; 392 efifb->fb_stride = stride; 393 return (0); 394 } else if (offset >= 0) { 395 printf("Hardware make/model known, but graphics not " 396 "as expected.\n"); 397 printf("Console may not work!\n"); 398 } 399 400 /* 401 * The stride is equal or larger to the width. Often it's the 402 * next larger power of two. We'll start with that... 403 */ 404 efifb->fb_stride = efifb->fb_width; 405 do { 406 np = efifb->fb_stride & (efifb->fb_stride - 1); 407 if (np) { 408 efifb->fb_stride |= (np - 1); 409 efifb->fb_stride++; 410 } 411 } while (np); 412 413 ev = getenv("hw.efifb.address"); 414 if (ev == NULL) { 415 if (efifb->fb_addr == 0) { 416 printf("Please set hw.efifb.address and " 417 "hw.efifb.stride.\n"); 418 return (1); 419 } 420 421 /* 422 * The visible part of the frame buffer may not start at 423 * offset 0, so try to detect it. Note that we may not 424 * always be able to read from the frame buffer, which 425 * means that we may not be able to detect anything. In 426 * that case, we would take a long time scanning for a 427 * pixel change in the frame buffer, which would have it 428 * appear that we're hanging, so we limit the scan to 429 * 1/256th of the frame buffer. This number is mostly 430 * based on PR 202730 and the fact that on a MacBoook, 431 * where we can't read from the frame buffer the offset 432 * of the visible region is 0. In short: we want to scan 433 * enough to handle all adapters that have an offset 434 * larger than 0 and we want to scan as little as we can 435 * to not appear to hang when we can't read from the 436 * frame buffer. 437 */ 438 offset = efifb_uga_find_pixel(uga, 0, pciio, efifb->fb_addr, 439 efifb->fb_size >> 8); 440 if (offset == -1) { 441 printf("Unable to reliably detect frame buffer.\n"); 442 } else if (offset > 0) { 443 efifb->fb_addr += offset; 444 efifb->fb_size -= offset; 445 } 446 } else { 447 offset = 0; 448 efifb->fb_size = efifb->fb_height * efifb->fb_stride * 4; 449 efifb->fb_addr = strtoul(ev, &p, 0); 450 if (*p != '\0') 451 return (1); 452 } 453 454 ev = getenv("hw.efifb.stride"); 455 if (ev == NULL) { 456 if (pciio != NULL && offset != -1) { 457 /* Determine the stride. */ 458 offset = efifb_uga_find_pixel(uga, 1, pciio, 459 efifb->fb_addr, horiz * 8); 460 if (offset != -1) 461 efifb->fb_stride = offset >> 2; 462 } else { 463 printf("Unable to reliably detect the stride.\n"); 464 } 465 } else { 466 efifb->fb_stride = strtoul(ev, &p, 0); 467 if (*p != '\0') 468 return (1); 469 } 470 471 /* 472 * We finalized on the stride, so recalculate the size of the 473 * frame buffer. 474 */ 475 efifb->fb_size = efifb->fb_height * efifb->fb_stride * 4; 476 return (0); 477 } 478 479 /* 480 * Fetch EDID info. Caller must free the buffer. 481 */ 482 static struct vesa_edid_info * 483 efifb_gop_get_edid(EFI_HANDLE h) 484 { 485 const uint8_t magic[] = EDID_MAGIC; 486 EFI_EDID_ACTIVE_PROTOCOL *edid; 487 struct vesa_edid_info *edid_infop; 488 EFI_GUID *guid; 489 EFI_STATUS status; 490 size_t size; 491 492 guid = &active_edid_guid; 493 status = BS->OpenProtocol(h, guid, (void **)&edid, IH, NULL, 494 EFI_OPEN_PROTOCOL_GET_PROTOCOL); 495 if (status != EFI_SUCCESS || 496 edid->SizeOfEdid == 0) { 497 guid = &discovered_edid_guid; 498 status = BS->OpenProtocol(h, guid, (void **)&edid, IH, NULL, 499 EFI_OPEN_PROTOCOL_GET_PROTOCOL); 500 if (status != EFI_SUCCESS || 501 edid->SizeOfEdid == 0) 502 return (NULL); 503 } 504 505 size = MAX(sizeof(*edid_infop), edid->SizeOfEdid); 506 507 edid_infop = calloc(1, size); 508 if (edid_infop == NULL) 509 return (NULL); 510 511 memcpy(edid_infop, edid->Edid, edid->SizeOfEdid); 512 513 /* Validate EDID */ 514 if (memcmp(edid_infop, magic, sizeof (magic)) != 0) 515 goto error; 516 517 if (edid_infop->header.version != 1) 518 goto error; 519 520 return (edid_infop); 521 error: 522 free(edid_infop); 523 return (NULL); 524 } 525 526 static bool 527 efifb_get_edid(edid_res_list_t *res) 528 { 529 bool rv = false; 530 531 if (edid_info == NULL) 532 edid_info = efifb_gop_get_edid(gop_handle); 533 534 if (edid_info != NULL) 535 rv = gfx_get_edid_resolution(edid_info, res); 536 537 return (rv); 538 } 539 540 bool 541 efi_has_gop(void) 542 { 543 EFI_STATUS status; 544 EFI_HANDLE *hlist; 545 UINTN hsize; 546 547 hsize = 0; 548 hlist = NULL; 549 status = BS->LocateHandle(ByProtocol, &gop_guid, NULL, &hsize, hlist); 550 551 return (status == EFI_BUFFER_TOO_SMALL); 552 } 553 554 555 int 556 efi_find_framebuffer(teken_gfx_t *gfx_state) 557 { 558 EFI_HANDLE *hlist; 559 UINTN nhandles, i, hsize; 560 struct efi_fb efifb; 561 EFI_STATUS status; 562 int rv; 563 564 gfx_state->tg_fb_type = FB_TEXT; 565 566 hsize = 0; 567 hlist = NULL; 568 status = BS->LocateHandle(ByProtocol, &gop_guid, NULL, &hsize, hlist); 569 if (status == EFI_BUFFER_TOO_SMALL) { 570 hlist = malloc(hsize); 571 if (hlist == NULL) 572 return (ENOMEM); 573 status = BS->LocateHandle(ByProtocol, &gop_guid, NULL, &hsize, 574 hlist); 575 if (EFI_ERROR(status)) 576 free(hlist); 577 } 578 if (EFI_ERROR(status)) 579 return (efi_status_to_errno(status)); 580 581 nhandles = hsize / sizeof(*hlist); 582 583 /* 584 * Search for ConOut protocol, if not found, use first handle. 585 */ 586 gop_handle = NULL; 587 for (i = 0; i < nhandles; i++) { 588 EFI_GRAPHICS_OUTPUT *tgop; 589 void *dummy; 590 591 status = OpenProtocolByHandle(hlist[i], &gop_guid, (void **)&tgop); 592 if (status != EFI_SUCCESS) 593 continue; 594 595 if (tgop->Mode->Info->PixelFormat == PixelBltOnly || 596 tgop->Mode->Info->PixelFormat >= PixelFormatMax) 597 continue; 598 599 status = OpenProtocolByHandle(hlist[i], &conout_guid, &dummy); 600 if (status == EFI_SUCCESS) { 601 gop_handle = hlist[i]; 602 gop = tgop; 603 break; 604 } else if (gop_handle == NULL) { 605 gop_handle = hlist[i]; 606 gop = tgop; 607 } 608 } 609 610 free(hlist); 611 612 if (gop_handle != NULL) { 613 gfx_state->tg_fb_type = FB_GOP; 614 gfx_state->tg_private = gop; 615 if (edid_info == NULL) 616 edid_info = efifb_gop_get_edid(gop_handle); 617 } else { 618 status = BS->LocateProtocol(&uga_guid, NULL, (VOID **)&uga); 619 if (status == EFI_SUCCESS) { 620 gfx_state->tg_fb_type = FB_UGA; 621 gfx_state->tg_private = uga; 622 } else { 623 return (1); 624 } 625 } 626 627 switch (gfx_state->tg_fb_type) { 628 case FB_GOP: 629 rv = efifb_from_gop(&efifb, gop->Mode, gop->Mode->Info); 630 break; 631 632 case FB_UGA: 633 rv = efifb_from_uga(&efifb); 634 break; 635 636 default: 637 return (1); 638 } 639 640 gfx_state->tg_fb.fb_addr = efifb.fb_addr; 641 gfx_state->tg_fb.fb_size = efifb.fb_size; 642 gfx_state->tg_fb.fb_height = efifb.fb_height; 643 gfx_state->tg_fb.fb_width = efifb.fb_width; 644 gfx_state->tg_fb.fb_stride = efifb.fb_stride; 645 gfx_state->tg_fb.fb_mask_red = efifb.fb_mask_red; 646 gfx_state->tg_fb.fb_mask_green = efifb.fb_mask_green; 647 gfx_state->tg_fb.fb_mask_blue = efifb.fb_mask_blue; 648 gfx_state->tg_fb.fb_mask_reserved = efifb.fb_mask_reserved; 649 650 gfx_state->tg_fb.fb_bpp = fls(efifb.fb_mask_red | efifb.fb_mask_green | 651 efifb.fb_mask_blue | efifb.fb_mask_reserved); 652 653 if (gfx_state->tg_shadow_fb != NULL) 654 BS->FreePages((EFI_PHYSICAL_ADDRESS)gfx_state->tg_shadow_fb, 655 gfx_state->tg_shadow_sz); 656 gfx_state->tg_shadow_sz = 657 EFI_SIZE_TO_PAGES(efifb.fb_height * efifb.fb_width * 658 sizeof(EFI_GRAPHICS_OUTPUT_BLT_PIXEL)); 659 status = BS->AllocatePages(AllocateMaxAddress, EfiLoaderData, 660 gfx_state->tg_shadow_sz, 661 (EFI_PHYSICAL_ADDRESS *)&gfx_state->tg_shadow_fb); 662 if (status != EFI_SUCCESS) 663 gfx_state->tg_shadow_fb = NULL; 664 665 return (0); 666 } 667 668 static void 669 print_efifb(int mode, struct efi_fb *efifb, int verbose) 670 { 671 u_int depth; 672 673 if (mode >= 0) 674 printf("mode %d: ", mode); 675 depth = efifb_color_depth(efifb); 676 printf("%ux%ux%u, stride=%u", efifb->fb_width, efifb->fb_height, 677 depth, efifb->fb_stride); 678 if (verbose) { 679 printf("\n frame buffer: address=%jx, size=%jx", 680 (uintmax_t)efifb->fb_addr, (uintmax_t)efifb->fb_size); 681 printf("\n color mask: R=%08x, G=%08x, B=%08x\n", 682 efifb->fb_mask_red, efifb->fb_mask_green, 683 efifb->fb_mask_blue); 684 } 685 } 686 687 static bool 688 efi_resolution_compare(struct named_resolution *res, const char *cmp) 689 { 690 691 if (strcasecmp(res->name, cmp) == 0) 692 return (true); 693 if (res->alias != NULL && strcasecmp(res->alias, cmp) == 0) 694 return (true); 695 return (false); 696 } 697 698 699 static void 700 efi_get_max_resolution(int *width, int *height) 701 { 702 struct named_resolution *res; 703 char *maxres; 704 char *height_start, *width_start; 705 int idx; 706 707 *width = *height = 0; 708 maxres = getenv("efi_max_resolution"); 709 /* No max_resolution set? Bail out; choose highest resolution */ 710 if (maxres == NULL) 711 return; 712 /* See if it matches one of our known resolutions */ 713 for (idx = 0; idx < nitems(resolutions); ++idx) { 714 res = &resolutions[idx]; 715 if (efi_resolution_compare(res, maxres)) { 716 *width = res->width; 717 *height = res->height; 718 return; 719 } 720 } 721 /* Not a known resolution, try to parse it; make a copy we can modify */ 722 maxres = strdup(maxres); 723 if (maxres == NULL) 724 return; 725 height_start = strchr(maxres, 'x'); 726 if (height_start == NULL) { 727 free(maxres); 728 return; 729 } 730 width_start = maxres; 731 *height_start++ = 0; 732 /* Errors from this will effectively mean "no max" */ 733 *width = (int)strtol(width_start, NULL, 0); 734 *height = (int)strtol(height_start, NULL, 0); 735 free(maxres); 736 } 737 738 static int 739 gop_autoresize(void) 740 { 741 struct efi_fb efifb; 742 EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *info; 743 EFI_STATUS status; 744 UINTN infosz; 745 UINT32 best_mode, currdim, maxdim, mode; 746 int height, max_height, max_width, width; 747 748 best_mode = maxdim = 0; 749 efi_get_max_resolution(&max_width, &max_height); 750 for (mode = 0; mode < gop->Mode->MaxMode; mode++) { 751 status = gop->QueryMode(gop, mode, &infosz, &info); 752 if (EFI_ERROR(status)) 753 continue; 754 efifb_from_gop(&efifb, gop->Mode, info); 755 width = info->HorizontalResolution; 756 height = info->VerticalResolution; 757 currdim = width * height; 758 if (currdim > maxdim) { 759 if ((max_width != 0 && width > max_width) || 760 (max_height != 0 && height > max_height)) 761 continue; 762 maxdim = currdim; 763 best_mode = mode; 764 } 765 } 766 767 if (maxdim != 0) { 768 status = gop->SetMode(gop, best_mode); 769 if (EFI_ERROR(status)) { 770 snprintf(command_errbuf, sizeof(command_errbuf), 771 "gop_autoresize: Unable to set mode to %u (error=%lu)", 772 mode, EFI_ERROR_CODE(status)); 773 return (CMD_ERROR); 774 } 775 (void) cons_update_mode(true); 776 } 777 return (CMD_OK); 778 } 779 780 static int 781 text_autoresize() 782 { 783 SIMPLE_TEXT_OUTPUT_INTERFACE *conout; 784 EFI_STATUS status; 785 UINTN i, max_dim, best_mode, cols, rows; 786 787 conout = ST->ConOut; 788 max_dim = best_mode = 0; 789 for (i = 0; i < conout->Mode->MaxMode; i++) { 790 status = conout->QueryMode(conout, i, &cols, &rows); 791 if (EFI_ERROR(status)) 792 continue; 793 if (cols * rows > max_dim) { 794 max_dim = cols * rows; 795 best_mode = i; 796 } 797 } 798 if (max_dim > 0) 799 conout->SetMode(conout, best_mode); 800 (void) cons_update_mode(true); 801 return (CMD_OK); 802 } 803 804 static int 805 uga_autoresize(void) 806 { 807 808 return (text_autoresize()); 809 } 810 811 COMMAND_SET(efi_autoresize, "efi-autoresizecons", "EFI Auto-resize Console", command_autoresize); 812 813 static int 814 command_autoresize(int argc, char *argv[]) 815 { 816 char *textmode; 817 818 textmode = getenv("hw.vga.textmode"); 819 /* If it's set and non-zero, we'll select a console mode instead */ 820 if (textmode != NULL && strcmp(textmode, "0") != 0) 821 return (text_autoresize()); 822 823 if (gop != NULL) 824 return (gop_autoresize()); 825 826 if (uga != NULL) 827 return (uga_autoresize()); 828 829 snprintf(command_errbuf, sizeof(command_errbuf), 830 "%s: Neither Graphics Output Protocol nor Universal Graphics Adapter present", 831 argv[0]); 832 833 /* 834 * Default to text_autoresize if we have neither GOP or UGA. This won't 835 * give us the most ideal resolution, but it will at least leave us 836 * functional rather than failing the boot for an objectively bad 837 * reason. 838 */ 839 return (text_autoresize()); 840 } 841 842 COMMAND_SET(gop, "gop", "graphics output protocol", command_gop); 843 844 static int 845 command_gop(int argc, char *argv[]) 846 { 847 struct efi_fb efifb; 848 EFI_STATUS status; 849 u_int mode; 850 851 if (gop == NULL) { 852 snprintf(command_errbuf, sizeof(command_errbuf), 853 "%s: Graphics Output Protocol not present", argv[0]); 854 return (CMD_ERROR); 855 } 856 857 if (argc < 2) 858 goto usage; 859 860 if (!strcmp(argv[1], "set")) { 861 char *cp; 862 863 if (argc != 3) 864 goto usage; 865 mode = strtol(argv[2], &cp, 0); 866 if (cp[0] != '\0') { 867 sprintf(command_errbuf, "mode is an integer"); 868 return (CMD_ERROR); 869 } 870 status = gop->SetMode(gop, mode); 871 if (EFI_ERROR(status)) { 872 snprintf(command_errbuf, sizeof(command_errbuf), 873 "%s: Unable to set mode to %u (error=%lu)", 874 argv[0], mode, EFI_ERROR_CODE(status)); 875 return (CMD_ERROR); 876 } 877 (void) cons_update_mode(true); 878 } else if (strcmp(argv[1], "off") == 0) { 879 (void) cons_update_mode(false); 880 } else if (strcmp(argv[1], "get") == 0) { 881 edid_res_list_t res; 882 883 if (argc != 2) 884 goto usage; 885 TAILQ_INIT(&res); 886 efifb_from_gop(&efifb, gop->Mode, gop->Mode->Info); 887 if (efifb_get_edid(&res)) { 888 struct resolution *rp; 889 890 printf("EDID"); 891 while ((rp = TAILQ_FIRST(&res)) != NULL) { 892 printf(" %dx%d", rp->width, rp->height); 893 TAILQ_REMOVE(&res, rp, next); 894 free(rp); 895 } 896 printf("\n"); 897 } else { 898 printf("no EDID information\n"); 899 } 900 print_efifb(gop->Mode->Mode, &efifb, 1); 901 printf("\n"); 902 } else if (!strcmp(argv[1], "list")) { 903 EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *info; 904 UINTN infosz; 905 906 if (argc != 2) 907 goto usage; 908 909 pager_open(); 910 for (mode = 0; mode < gop->Mode->MaxMode; mode++) { 911 status = gop->QueryMode(gop, mode, &infosz, &info); 912 if (EFI_ERROR(status)) 913 continue; 914 efifb_from_gop(&efifb, gop->Mode, info); 915 print_efifb(mode, &efifb, 0); 916 if (pager_output("\n")) 917 break; 918 } 919 pager_close(); 920 } 921 return (CMD_OK); 922 923 usage: 924 snprintf(command_errbuf, sizeof(command_errbuf), 925 "usage: %s [list | get | set <mode> | off]", argv[0]); 926 return (CMD_ERROR); 927 } 928 929 COMMAND_SET(uga, "uga", "universal graphics adapter", command_uga); 930 931 static int 932 command_uga(int argc, char *argv[]) 933 { 934 struct efi_fb efifb; 935 936 if (uga == NULL) { 937 snprintf(command_errbuf, sizeof(command_errbuf), 938 "%s: UGA Protocol not present", argv[0]); 939 return (CMD_ERROR); 940 } 941 942 if (argc != 1) 943 goto usage; 944 945 if (efifb_from_uga(&efifb) != CMD_OK) { 946 snprintf(command_errbuf, sizeof(command_errbuf), 947 "%s: Unable to get UGA information", argv[0]); 948 return (CMD_ERROR); 949 } 950 951 print_efifb(-1, &efifb, 1); 952 printf("\n"); 953 return (CMD_OK); 954 955 usage: 956 snprintf(command_errbuf, sizeof(command_errbuf), "usage: %s", argv[0]); 957 return (CMD_ERROR); 958 } 959