1 /* 2 * Copyright (c) 2013 The FreeBSD Foundation 3 * All rights reserved. 4 * 5 * This software was developed by Benno Rice under sponsorship from 6 * the FreeBSD Foundation. 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 AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, 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 31 #include <stand.h> 32 #include <bootstrap.h> 33 #include <sys/endian.h> 34 #include <sys/param.h> 35 #include <sys/font.h> 36 #include <sys/consplat.h> 37 #include <sys/limits.h> 38 39 #include <efi.h> 40 #include <efilib.h> 41 #include <efiuga.h> 42 #include <efipciio.h> 43 #include <Protocol/EdidActive.h> 44 #include <Protocol/EdidDiscovered.h> 45 #include <machine/metadata.h> 46 47 #include "gfx_fb.h" 48 #include "framebuffer.h" 49 50 EFI_GUID conout_guid = EFI_CONSOLE_OUT_DEVICE_GUID; 51 EFI_GUID gop_guid = EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID; 52 static EFI_GUID pciio_guid = EFI_PCI_IO_PROTOCOL_GUID; 53 EFI_GUID uga_guid = EFI_UGA_DRAW_PROTOCOL_GUID; 54 static EFI_GUID active_edid_guid = EFI_EDID_ACTIVE_PROTOCOL_GUID; 55 static EFI_GUID discovered_edid_guid = EFI_EDID_DISCOVERED_PROTOCOL_GUID; 56 static EFI_HANDLE gop_handle; 57 58 /* Saved initial GOP mode. */ 59 static uint32_t default_mode = UINT32_MAX; 60 /* Cached EDID. */ 61 struct vesa_edid_info *edid_info = NULL; 62 63 static uint32_t gop_default_mode(void); 64 static int efifb_set_mode(EFI_GRAPHICS_OUTPUT *, uint_t); 65 66 static uint_t 67 efifb_color_depth(struct efi_fb *efifb) 68 { 69 uint32_t mask; 70 uint_t depth; 71 72 mask = efifb->fb_mask_red | efifb->fb_mask_green | 73 efifb->fb_mask_blue | efifb->fb_mask_reserved; 74 if (mask == 0) 75 return (0); 76 for (depth = 1; mask != 1; depth++) 77 mask >>= 1; 78 return (depth); 79 } 80 81 static int 82 efifb_mask_from_pixfmt(struct efi_fb *efifb, EFI_GRAPHICS_PIXEL_FORMAT pixfmt, 83 EFI_PIXEL_BITMASK *pixinfo) 84 { 85 int result; 86 87 result = 0; 88 switch (pixfmt) { 89 case PixelRedGreenBlueReserved8BitPerColor: 90 case PixelBltOnly: 91 efifb->fb_mask_red = 0x000000ff; 92 efifb->fb_mask_green = 0x0000ff00; 93 efifb->fb_mask_blue = 0x00ff0000; 94 efifb->fb_mask_reserved = 0xff000000; 95 break; 96 case PixelBlueGreenRedReserved8BitPerColor: 97 efifb->fb_mask_red = 0x00ff0000; 98 efifb->fb_mask_green = 0x0000ff00; 99 efifb->fb_mask_blue = 0x000000ff; 100 efifb->fb_mask_reserved = 0xff000000; 101 break; 102 case PixelBitMask: 103 efifb->fb_mask_red = pixinfo->RedMask; 104 efifb->fb_mask_green = pixinfo->GreenMask; 105 efifb->fb_mask_blue = pixinfo->BlueMask; 106 efifb->fb_mask_reserved = pixinfo->ReservedMask; 107 break; 108 default: 109 result = 1; 110 break; 111 } 112 return (result); 113 } 114 115 static int 116 efifb_from_gop(struct efi_fb *efifb, EFI_GRAPHICS_OUTPUT_PROTOCOL_MODE *mode, 117 EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *info) 118 { 119 int result; 120 121 efifb->fb_addr = mode->FrameBufferBase; 122 efifb->fb_size = mode->FrameBufferSize; 123 efifb->fb_height = info->VerticalResolution; 124 efifb->fb_width = info->HorizontalResolution; 125 efifb->fb_stride = info->PixelsPerScanLine; 126 result = efifb_mask_from_pixfmt(efifb, info->PixelFormat, 127 &info->PixelInformation); 128 if (efifb->fb_addr == 0) 129 result = 1; 130 return (result); 131 } 132 133 static ssize_t 134 efifb_uga_find_pixel(EFI_UGA_DRAW_PROTOCOL *uga, uint_t line, 135 EFI_PCI_IO_PROTOCOL *pciio, uint64_t addr, uint64_t size) 136 { 137 EFI_UGA_PIXEL pix0, pix1; 138 uint8_t *data1, *data2; 139 size_t count, maxcount = 1024; 140 ssize_t ofs; 141 EFI_STATUS status; 142 uint_t idx; 143 144 status = uga->Blt(uga, &pix0, EfiUgaVideoToBltBuffer, 145 0, line, 0, 0, 1, 1, 0); 146 if (EFI_ERROR(status)) { 147 printf("UGA BLT operation failed (video->buffer)"); 148 return (-1); 149 } 150 pix1.Red = ~pix0.Red; 151 pix1.Green = ~pix0.Green; 152 pix1.Blue = ~pix0.Blue; 153 pix1.Reserved = 0; 154 155 data1 = calloc(maxcount, 2); 156 if (data1 == NULL) { 157 printf("Unable to allocate memory"); 158 return (-1); 159 } 160 data2 = data1 + maxcount; 161 162 ofs = 0; 163 while (size > 0) { 164 count = min(size, maxcount); 165 166 status = pciio->Mem.Read(pciio, EfiPciIoWidthUint32, 167 EFI_PCI_IO_PASS_THROUGH_BAR, addr + ofs, count >> 2, 168 data1); 169 if (EFI_ERROR(status)) { 170 printf("Error reading frame buffer (before)"); 171 goto fail; 172 } 173 status = uga->Blt(uga, &pix1, EfiUgaBltBufferToVideo, 174 0, 0, 0, line, 1, 1, 0); 175 if (EFI_ERROR(status)) { 176 printf("UGA BLT operation failed (modify)"); 177 goto fail; 178 } 179 status = pciio->Mem.Read(pciio, EfiPciIoWidthUint32, 180 EFI_PCI_IO_PASS_THROUGH_BAR, addr + ofs, count >> 2, 181 data2); 182 if (EFI_ERROR(status)) { 183 printf("Error reading frame buffer (after)"); 184 goto fail; 185 } 186 status = uga->Blt(uga, &pix0, EfiUgaBltBufferToVideo, 187 0, 0, 0, line, 1, 1, 0); 188 if (EFI_ERROR(status)) { 189 printf("UGA BLT operation failed (restore)"); 190 goto fail; 191 } 192 for (idx = 0; idx < count; idx++) { 193 if (data1[idx] != data2[idx]) { 194 free(data1); 195 return (ofs + (idx & ~3)); 196 } 197 } 198 ofs += count; 199 size -= count; 200 } 201 printf("No change detected in frame buffer"); 202 203 fail: 204 printf(" -- error %lu\n", EFI_ERROR_CODE(status)); 205 free(data1); 206 return (-1); 207 } 208 209 static EFI_PCI_IO_PROTOCOL * 210 efifb_uga_get_pciio(void) 211 { 212 EFI_PCI_IO_PROTOCOL *pciio; 213 EFI_HANDLE *buf, *hp; 214 EFI_STATUS status; 215 UINTN bufsz; 216 217 /* Get all handles that support the UGA protocol. */ 218 bufsz = 0; 219 status = BS->LocateHandle(ByProtocol, &uga_guid, NULL, &bufsz, NULL); 220 if (status != EFI_BUFFER_TOO_SMALL) 221 return (NULL); 222 buf = malloc(bufsz); 223 status = BS->LocateHandle(ByProtocol, &uga_guid, NULL, &bufsz, buf); 224 if (status != EFI_SUCCESS) { 225 free(buf); 226 return (NULL); 227 } 228 bufsz /= sizeof (EFI_HANDLE); 229 230 /* Get the PCI I/O interface of the first handle that supports it. */ 231 pciio = NULL; 232 for (hp = buf; hp < buf + bufsz; hp++) { 233 status = OpenProtocolByHandle(*hp, &pciio_guid, 234 (void **)&pciio); 235 if (status == EFI_SUCCESS) { 236 free(buf); 237 return (pciio); 238 } 239 } 240 free(buf); 241 return (NULL); 242 } 243 244 static EFI_STATUS 245 efifb_uga_locate_framebuffer(EFI_PCI_IO_PROTOCOL *pciio, uint64_t *addrp, 246 uint64_t *sizep) 247 { 248 uint8_t *resattr; 249 uint64_t addr, size; 250 EFI_STATUS status; 251 uint_t bar; 252 253 if (pciio == NULL) 254 return (EFI_DEVICE_ERROR); 255 256 /* Attempt to get the frame buffer address (imprecise). */ 257 *addrp = 0; 258 *sizep = 0; 259 for (bar = 0; bar < 6; bar++) { 260 status = pciio->GetBarAttributes(pciio, bar, NULL, 261 (void **)&resattr); 262 if (status != EFI_SUCCESS) 263 continue; 264 /* XXX magic offsets and constants. */ 265 if (resattr[0] == 0x87 && resattr[3] == 0) { 266 /* 32-bit address space descriptor (MEMIO) */ 267 addr = le32dec(resattr + 10); 268 size = le32dec(resattr + 22); 269 } else if (resattr[0] == 0x8a && resattr[3] == 0) { 270 /* 64-bit address space descriptor (MEMIO) */ 271 addr = le64dec(resattr + 14); 272 size = le64dec(resattr + 38); 273 } else { 274 addr = 0; 275 size = 0; 276 } 277 BS->FreePool(resattr); 278 if (addr == 0 || size == 0) 279 continue; 280 281 /* We assume the largest BAR is the frame buffer. */ 282 if (size > *sizep) { 283 *addrp = addr; 284 *sizep = size; 285 } 286 } 287 return ((*addrp == 0 || *sizep == 0) ? EFI_DEVICE_ERROR : 0); 288 } 289 290 static int 291 efifb_from_uga(struct efi_fb *efifb, EFI_UGA_DRAW_PROTOCOL *uga) 292 { 293 EFI_PCI_IO_PROTOCOL *pciio; 294 char *ev, *p; 295 EFI_STATUS status; 296 ssize_t offset; 297 uint64_t fbaddr; 298 uint32_t horiz, vert, stride; 299 uint32_t np, depth, refresh; 300 301 status = uga->GetMode(uga, &horiz, &vert, &depth, &refresh); 302 if (EFI_ERROR(status)) 303 return (1); 304 efifb->fb_height = vert; 305 efifb->fb_width = horiz; 306 /* Paranoia... */ 307 if (efifb->fb_height == 0 || efifb->fb_width == 0) 308 return (1); 309 310 /* The color masks are fixed AFAICT. */ 311 efifb_mask_from_pixfmt(efifb, PixelBlueGreenRedReserved8BitPerColor, 312 NULL); 313 314 /* pciio can be NULL on return! */ 315 pciio = efifb_uga_get_pciio(); 316 317 /* Try to find the frame buffer. */ 318 status = efifb_uga_locate_framebuffer(pciio, &efifb->fb_addr, 319 &efifb->fb_size); 320 if (EFI_ERROR(status)) { 321 efifb->fb_addr = 0; 322 efifb->fb_size = 0; 323 } 324 325 /* 326 * There's no reliable way to detect the frame buffer or the 327 * offset within the frame buffer of the visible region, nor 328 * the stride. Our only option is to look at the system and 329 * fill in the blanks based on that. Luckily, UGA was mostly 330 * only used on Apple hardware. 331 */ 332 offset = -1; 333 ev = getenv("smbios.system.maker"); 334 if (ev != NULL && strcmp(ev, "Apple Inc.") == 0) { 335 ev = getenv("smbios.system.product"); 336 if (ev != NULL && strcmp(ev, "iMac7,1") == 0) { 337 /* These are the expected values we should have. */ 338 horiz = 1680; 339 vert = 1050; 340 fbaddr = 0xc0000000; 341 /* These are the missing bits. */ 342 offset = 0x10000; 343 stride = 1728; 344 } else if (ev != NULL && strcmp(ev, "MacBook3,1") == 0) { 345 /* These are the expected values we should have. */ 346 horiz = 1280; 347 vert = 800; 348 fbaddr = 0xc0000000; 349 /* These are the missing bits. */ 350 offset = 0x0; 351 stride = 2048; 352 } 353 } 354 355 /* 356 * If this is hardware we know, make sure that it looks familiar 357 * before we accept our hardcoded values. 358 */ 359 if (offset >= 0 && efifb->fb_width == horiz && 360 efifb->fb_height == vert && efifb->fb_addr == fbaddr) { 361 efifb->fb_addr += offset; 362 efifb->fb_size -= offset; 363 efifb->fb_stride = stride; 364 return (0); 365 } else if (offset >= 0) { 366 printf("Hardware make/model known, but graphics not " 367 "as expected.\n"); 368 printf("Console may not work!\n"); 369 } 370 371 /* 372 * The stride is equal or larger to the width. Often it's the 373 * next larger power of two. We'll start with that... 374 */ 375 efifb->fb_stride = efifb->fb_width; 376 do { 377 np = efifb->fb_stride & (efifb->fb_stride - 1); 378 if (np) { 379 efifb->fb_stride |= (np - 1); 380 efifb->fb_stride++; 381 } 382 } while (np); 383 384 ev = getenv("hw.efifb.address"); 385 if (ev == NULL) { 386 if (efifb->fb_addr == 0) { 387 printf("Please set hw.efifb.address and " 388 "hw.efifb.stride.\n"); 389 return (1); 390 } 391 392 /* 393 * The visible part of the frame buffer may not start at 394 * offset 0, so try to detect it. Note that we may not 395 * always be able to read from the frame buffer, which 396 * means that we may not be able to detect anything. In 397 * that case, we would take a long time scanning for a 398 * pixel change in the frame buffer, which would have it 399 * appear that we're hanging, so we limit the scan to 400 * 1/256th of the frame buffer. This number is mostly 401 * based on PR 202730 and the fact that on a MacBoook, 402 * where we can't read from the frame buffer the offset 403 * of the visible region is 0. In short: we want to scan 404 * enough to handle all adapters that have an offset 405 * larger than 0 and we want to scan as little as we can 406 * to not appear to hang when we can't read from the 407 * frame buffer. 408 */ 409 offset = efifb_uga_find_pixel(uga, 0, pciio, efifb->fb_addr, 410 efifb->fb_size >> 8); 411 if (offset == -1) { 412 printf("Unable to reliably detect frame buffer.\n"); 413 } else if (offset > 0) { 414 efifb->fb_addr += offset; 415 efifb->fb_size -= offset; 416 } 417 } else { 418 offset = 0; 419 efifb->fb_size = efifb->fb_height * efifb->fb_stride * 4; 420 efifb->fb_addr = strtoul(ev, &p, 0); 421 if (*p != '\0') 422 return (1); 423 } 424 425 ev = getenv("hw.efifb.stride"); 426 if (ev == NULL) { 427 if (pciio != NULL && offset != -1) { 428 /* Determine the stride. */ 429 offset = efifb_uga_find_pixel(uga, 1, pciio, 430 efifb->fb_addr, horiz * 8); 431 if (offset != -1) 432 efifb->fb_stride = offset >> 2; 433 } else { 434 printf("Unable to reliably detect the stride.\n"); 435 } 436 } else { 437 efifb->fb_stride = strtoul(ev, &p, 0); 438 if (*p != '\0') 439 return (1); 440 } 441 442 /* 443 * We finalized on the stride, so recalculate the size of the 444 * frame buffer. 445 */ 446 efifb->fb_size = efifb->fb_height * efifb->fb_stride * 4; 447 if (efifb->fb_addr == 0) 448 return (1); 449 return (0); 450 } 451 452 /* 453 * Fetch EDID info. Caller must free the buffer. 454 */ 455 static struct vesa_edid_info * 456 efifb_gop_get_edid(EFI_HANDLE h) 457 { 458 const uint8_t magic[] = EDID_MAGIC; 459 EFI_EDID_ACTIVE_PROTOCOL *edid; 460 struct vesa_edid_info *edid_infop; 461 EFI_GUID *guid; 462 EFI_STATUS status; 463 size_t size; 464 465 guid = &active_edid_guid; 466 status = BS->OpenProtocol(h, guid, (void **)&edid, IH, NULL, 467 EFI_OPEN_PROTOCOL_GET_PROTOCOL); 468 if (status != EFI_SUCCESS || 469 edid->SizeOfEdid == 0) { 470 guid = &discovered_edid_guid; 471 status = BS->OpenProtocol(h, guid, (void **)&edid, IH, NULL, 472 EFI_OPEN_PROTOCOL_GET_PROTOCOL); 473 if (status != EFI_SUCCESS || 474 edid->SizeOfEdid == 0) 475 return (NULL); 476 } 477 478 size = MAX(sizeof (*edid_infop), edid->SizeOfEdid); 479 480 edid_infop = calloc(1, size); 481 if (edid_infop == NULL) 482 return (NULL); 483 484 memcpy(edid_infop, edid->Edid, edid->SizeOfEdid); 485 486 /* Validate EDID */ 487 if (memcmp(edid_infop, magic, sizeof (magic)) != 0) 488 goto error; 489 490 if (edid_infop->header.version != 1) 491 goto error; 492 493 return (edid_infop); 494 error: 495 free(edid_infop); 496 return (NULL); 497 } 498 499 static bool 500 efifb_get_edid(edid_res_list_t *res) 501 { 502 bool rv = false; 503 504 if (edid_info == NULL) 505 edid_info = efifb_gop_get_edid(gop_handle); 506 507 if (edid_info != NULL) 508 rv = gfx_get_edid_resolution(edid_info, res); 509 510 return (rv); 511 } 512 513 int 514 efi_find_framebuffer(struct efi_fb *efifb) 515 { 516 EFI_HANDLE *hlist; 517 UINTN nhandles, i, hsize; 518 extern EFI_GRAPHICS_OUTPUT *gop; 519 extern EFI_UGA_DRAW_PROTOCOL *uga; 520 EFI_STATUS status; 521 uint32_t mode; 522 523 if (gop != NULL) 524 return (efifb_from_gop(efifb, gop->Mode, gop->Mode->Info)); 525 526 hsize = 0; 527 hlist = NULL; 528 status = BS->LocateHandle(ByProtocol, &gop_guid, NULL, &hsize, hlist); 529 if (status == EFI_BUFFER_TOO_SMALL) { 530 hlist = malloc(hsize); 531 if (hlist == NULL) 532 return (ENOMEM); 533 status = BS->LocateHandle(ByProtocol, &gop_guid, NULL, &hsize, 534 hlist); 535 if (EFI_ERROR(status)) 536 free(hlist); 537 } 538 if (EFI_ERROR(status)) 539 return (efi_status_to_errno(status)); 540 541 nhandles = hsize / sizeof (*hlist); 542 543 /* 544 * Search for ConOut protocol, if not found, use first handle. 545 */ 546 gop_handle = *hlist; 547 for (i = 0; i < nhandles; i++) { 548 void *dummy = NULL; 549 550 status = OpenProtocolByHandle(hlist[i], &conout_guid, &dummy); 551 if (status == EFI_SUCCESS) { 552 gop_handle = hlist[i]; 553 break; 554 } 555 } 556 557 status = OpenProtocolByHandle(gop_handle, &gop_guid, (void **)&gop); 558 free(hlist); 559 560 if (status == EFI_SUCCESS) { 561 /* Save default mode. */ 562 if (default_mode == UINT32_MAX) { 563 default_mode = gop->Mode->Mode; 564 } 565 mode = gop_default_mode(); 566 if (mode != gop->Mode->Mode) 567 efifb_set_mode(gop, mode); 568 return (efifb_from_gop(efifb, gop->Mode, gop->Mode->Info)); 569 } 570 571 if (uga != NULL) 572 return (efifb_from_uga(efifb, uga)); 573 574 status = BS->LocateProtocol(&uga_guid, NULL, (void **)&uga); 575 if (status == EFI_SUCCESS) 576 return (efifb_from_uga(efifb, uga)); 577 578 return (1); 579 } 580 581 static void 582 print_efifb(int mode, struct efi_fb *efifb, int verbose) 583 { 584 uint_t depth; 585 edid_res_list_t res; 586 struct resolution *rp; 587 588 TAILQ_INIT(&res); 589 if (verbose == 1) { 590 printf("Framebuffer mode: %s\n", 591 plat_stdout_is_framebuffer() ? "on" : "off"); 592 if (efifb_get_edid(&res)) { 593 printf("EDID"); 594 while ((rp = TAILQ_FIRST(&res)) != NULL) { 595 printf(" %dx%d", rp->width, rp->height); 596 TAILQ_REMOVE(&res, rp, next); 597 free(rp); 598 } 599 printf("\n"); 600 } 601 } 602 603 if (mode >= 0) { 604 if (verbose == 1) 605 printf("GOP "); 606 printf("mode %d: ", mode); 607 } 608 depth = efifb_color_depth(efifb); 609 printf("%ux%ux%u", efifb->fb_width, efifb->fb_height, depth); 610 if (verbose) 611 printf(", stride=%u", efifb->fb_stride); 612 if (verbose) { 613 printf("\n frame buffer: address=%jx, size=%jx", 614 (uintmax_t)efifb->fb_addr, (uintmax_t)efifb->fb_size); 615 printf("\n color mask: R=%08x, G=%08x, B=%08x\n", 616 efifb->fb_mask_red, efifb->fb_mask_green, 617 efifb->fb_mask_blue); 618 if (efifb->fb_addr == 0) { 619 printf("Warning: this mode is not implementing the " 620 "linear framebuffer. The illumos\n\tconsole is " 621 "not available with this mode and will default to " 622 "ttya\n"); 623 } 624 } 625 } 626 627 static int 628 efifb_set_mode(EFI_GRAPHICS_OUTPUT *gop, uint_t mode) 629 { 630 EFI_STATUS status; 631 632 status = gop->SetMode(gop, mode); 633 if (EFI_ERROR(status)) { 634 snprintf(command_errbuf, sizeof (command_errbuf), 635 "Unable to set mode to %u (error=%lu)", 636 mode, EFI_ERROR_CODE(status)); 637 return (CMD_ERROR); 638 } 639 return (CMD_OK); 640 } 641 642 /* 643 * Verify existance of mode number or find mode by 644 * dimensions. If depth is not given, walk values 32, 24, 16, 8. 645 * Return MaxMode if mode is not found. 646 */ 647 static int 648 efifb_find_mode_xydm(UINT32 x, UINT32 y, int depth, int m) 649 { 650 extern EFI_GRAPHICS_OUTPUT *gop; 651 EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *info; 652 EFI_STATUS status; 653 UINTN infosz; 654 struct efi_fb fb; 655 UINT32 mode; 656 uint_t d, i; 657 658 if (m != -1) 659 i = 8; 660 else if (depth == -1) 661 i = 32; 662 else 663 i = depth; 664 665 while (i > 0) { 666 for (mode = 0; mode < gop->Mode->MaxMode; mode++) { 667 status = gop->QueryMode(gop, mode, &infosz, &info); 668 if (EFI_ERROR(status)) 669 continue; 670 671 if (m != -1) { 672 if ((UINT32)m == mode) 673 return (mode); 674 else 675 continue; 676 } 677 678 efifb_from_gop(&fb, gop->Mode, info); 679 d = efifb_color_depth(&fb); 680 if (x == fb.fb_width && y == fb.fb_height && d == i) 681 return (mode); 682 } 683 684 if (depth != -1) 685 break; 686 687 i -= 8; 688 } 689 690 return (gop->Mode->MaxMode); 691 } 692 693 static int 694 efifb_find_mode(char *str) 695 { 696 extern EFI_GRAPHICS_OUTPUT *gop; 697 int x, y, depth; 698 699 if (!gfx_parse_mode_str(str, &x, &y, &depth)) 700 return (gop->Mode->MaxMode); 701 702 return (efifb_find_mode_xydm(x, y, depth, -1)); 703 } 704 705 /* 706 * gop_default_mode(). Try to set mode based on EDID. 707 */ 708 static uint32_t 709 gop_default_mode(void) 710 { 711 edid_res_list_t res; 712 struct resolution *rp; 713 extern EFI_GRAPHICS_OUTPUT *gop; 714 UINT32 mode; 715 716 mode = gop->Mode->MaxMode; 717 TAILQ_INIT(&res); 718 if (efifb_get_edid(&res)) { 719 while ((rp = TAILQ_FIRST(&res)) != NULL) { 720 if (mode == gop->Mode->MaxMode) { 721 mode = efifb_find_mode_xydm( 722 rp->width, rp->height, -1, -1); 723 } 724 TAILQ_REMOVE(&res, rp, next); 725 free(rp); 726 } 727 } 728 729 if (mode == gop->Mode->MaxMode) 730 mode = default_mode; 731 732 return (mode); 733 } 734 735 COMMAND_SET(framebuffer, "framebuffer", "framebuffer mode management", 736 command_gop); 737 738 static int 739 command_gop(int argc, char *argv[]) 740 { 741 extern struct efi_fb efifb; 742 extern EFI_GRAPHICS_OUTPUT *gop; 743 struct efi_fb fb; 744 EFI_STATUS status; 745 char *arg, *cp; 746 uint_t mode; 747 748 if (gop == NULL) { 749 snprintf(command_errbuf, sizeof (command_errbuf), 750 "%s: Graphics Output Protocol not present", argv[0]); 751 return (CMD_ERROR); 752 } 753 754 if (argc < 2) 755 goto usage; 756 757 /* 758 * Note we can not turn the GOP itself off, but instead we instruct 759 * tem to use text mode. 760 */ 761 if (strcmp(argv[1], "off") == 0) { 762 if (argc != 2) 763 goto usage; 764 765 reset_font_flags(); 766 plat_cons_update_mode(EfiConsoleControlScreenText); 767 return (CMD_OK); 768 } 769 770 /* 771 * Set GOP to use default mode, then notify tem. 772 */ 773 if (strcmp(argv[1], "on") == 0) { 774 if (argc != 2) 775 goto usage; 776 777 reset_font_flags(); 778 mode = gop_default_mode(); 779 if (mode != gop->Mode->Mode) 780 efifb_set_mode(gop, mode); 781 782 plat_cons_update_mode(EfiConsoleControlScreenGraphics); 783 return (CMD_OK); 784 } 785 786 if (strcmp(argv[1], "set") == 0) { 787 int rv; 788 789 if (argc != 3) 790 goto usage; 791 792 arg = argv[2]; 793 if (strchr(arg, 'x') == NULL) { 794 errno = 0; 795 mode = strtoul(arg, &cp, 0); 796 if (errno != 0 || *arg == '\0' || cp[0] != '\0') { 797 snprintf(command_errbuf, 798 sizeof (command_errbuf), 799 "mode should be an integer"); 800 return (CMD_ERROR); 801 } 802 mode = efifb_find_mode_xydm(0, 0, 0, mode); 803 } else { 804 mode = efifb_find_mode(arg); 805 } 806 807 if (mode == gop->Mode->MaxMode) 808 mode = gop->Mode->Mode; 809 810 reset_font_flags(); 811 rv = efifb_set_mode(gop, mode); 812 plat_cons_update_mode(EfiConsoleControlScreenGraphics); 813 return (rv); 814 } 815 816 if (strcmp(argv[1], "get") == 0) { 817 if (argc != 2) 818 goto usage; 819 820 print_efifb(gop->Mode->Mode, &efifb, 1); 821 printf("\n"); 822 return (CMD_OK); 823 } 824 825 if (strcmp(argv[1], "list") == 0) { 826 EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *info; 827 UINTN infosz; 828 int depth, d = -1; 829 830 if (argc != 2 && argc != 3) 831 goto usage; 832 833 if (argc == 3) { 834 arg = argv[2]; 835 errno = 0; 836 d = strtoul(arg, &cp, 0); 837 if (errno != 0 || *arg == '\0' || cp[0] != '\0') { 838 snprintf(command_errbuf, 839 sizeof (command_errbuf), 840 "depth should be an integer"); 841 return (CMD_ERROR); 842 } 843 } 844 pager_open(); 845 for (mode = 0; mode < gop->Mode->MaxMode; mode++) { 846 status = gop->QueryMode(gop, mode, &infosz, &info); 847 if (EFI_ERROR(status)) 848 continue; 849 efifb_from_gop(&fb, gop->Mode, info); 850 depth = efifb_color_depth(&fb); 851 if (d != -1 && d != depth) 852 continue; 853 print_efifb(mode, &fb, 0); 854 if (pager_output("\n")) 855 break; 856 } 857 pager_close(); 858 return (CMD_OK); 859 } 860 861 usage: 862 snprintf(command_errbuf, sizeof (command_errbuf), 863 "usage: %s on | off | get | list [depth] | " 864 "set <display or GOP mode number>", argv[0]); 865 return (CMD_ERROR); 866 } 867 868 COMMAND_SET(uga, "uga", "universal graphics adapter", command_uga); 869 870 static int 871 command_uga(int argc, char *argv[]) 872 { 873 extern struct efi_fb efifb; 874 extern EFI_UGA_DRAW_PROTOCOL *uga; 875 876 if (uga == NULL) { 877 snprintf(command_errbuf, sizeof (command_errbuf), 878 "%s: UGA Protocol not present", argv[0]); 879 return (CMD_ERROR); 880 } 881 882 if (argc != 1) 883 goto usage; 884 885 if (efifb.fb_addr == 0) { 886 snprintf(command_errbuf, sizeof (command_errbuf), 887 "%s: Unable to get UGA information", argv[0]); 888 return (CMD_ERROR); 889 } 890 891 print_efifb(-1, &efifb, 1); 892 printf("\n"); 893 return (CMD_OK); 894 895 usage: 896 snprintf(command_errbuf, sizeof (command_errbuf), "usage: %s", argv[0]); 897 return (CMD_ERROR); 898 } 899