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 <efipciio.h> 36 #include <Protocol/EdidActive.h> 37 #include <Protocol/EdidDiscovered.h> 38 #include <Protocol/GraphicsOutput.h> 39 #include <Protocol/UgaDraw.h> 40 #include <machine/metadata.h> 41 42 #include "bootstrap.h" 43 #include "framebuffer.h" 44 45 /* XXX This may be obsolete -- edk2 doesn't define it anywhere */ 46 #define EFI_CONSOLE_OUT_DEVICE_GUID \ 47 { 0xd3b36f2c, 0xd551, 0x11d4, {0x9a, 0x46, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d} } 48 49 static EFI_GUID conout_guid = EFI_CONSOLE_OUT_DEVICE_GUID; 50 EFI_GUID gop_guid = EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID; 51 static EFI_GUID pciio_guid = EFI_PCI_IO_PROTOCOL_GUID; 52 static EFI_GUID uga_guid = EFI_UGA_DRAW_PROTOCOL_GUID; 53 static EFI_GUID active_edid_guid = EFI_EDID_ACTIVE_PROTOCOL_GUID; 54 static EFI_GUID discovered_edid_guid = EFI_EDID_DISCOVERED_PROTOCOL_GUID; 55 static EFI_HANDLE gop_handle; 56 57 /* Cached EDID. */ 58 struct vesa_edid_info *edid_info = NULL; 59 60 static EFI_GRAPHICS_OUTPUT_PROTOCOL *gop; 61 static EFI_UGA_DRAW_PROTOCOL *uga; 62 63 static struct named_resolution { 64 const char *name; 65 const char *alias; 66 unsigned int width; 67 unsigned int height; 68 } resolutions[] = { 69 { 70 .name = "480p", 71 .width = 640, 72 .height = 480, 73 }, 74 { 75 .name = "720p", 76 .width = 1280, 77 .height = 720, 78 }, 79 { 80 .name = "1080p", 81 .width = 1920, 82 .height = 1080, 83 }, 84 { 85 .name = "1440p", 86 .width = 2560, 87 .height = 1440, 88 }, 89 { 90 .name = "2160p", 91 .alias = "4k", 92 .width = 3840, 93 .height = 2160, 94 }, 95 { 96 .name = "5k", 97 .width = 5120, 98 .height = 2880, 99 } 100 }; 101 102 static u_int 103 efifb_color_depth(struct efi_fb *efifb) 104 { 105 uint32_t mask; 106 u_int depth; 107 108 mask = efifb->fb_mask_red | efifb->fb_mask_green | 109 efifb->fb_mask_blue | efifb->fb_mask_reserved; 110 if (mask == 0) 111 return (0); 112 for (depth = 1; mask != 1; depth++) 113 mask >>= 1; 114 return (depth); 115 } 116 117 static int 118 efifb_mask_from_pixfmt(struct efi_fb *efifb, EFI_GRAPHICS_PIXEL_FORMAT pixfmt, 119 EFI_PIXEL_BITMASK *pixinfo) 120 { 121 int result; 122 123 result = 0; 124 switch (pixfmt) { 125 case PixelRedGreenBlueReserved8BitPerColor: 126 case PixelBltOnly: 127 efifb->fb_mask_red = 0x000000ff; 128 efifb->fb_mask_green = 0x0000ff00; 129 efifb->fb_mask_blue = 0x00ff0000; 130 efifb->fb_mask_reserved = 0xff000000; 131 break; 132 case PixelBlueGreenRedReserved8BitPerColor: 133 efifb->fb_mask_red = 0x00ff0000; 134 efifb->fb_mask_green = 0x0000ff00; 135 efifb->fb_mask_blue = 0x000000ff; 136 efifb->fb_mask_reserved = 0xff000000; 137 break; 138 case PixelBitMask: 139 efifb->fb_mask_red = pixinfo->RedMask; 140 efifb->fb_mask_green = pixinfo->GreenMask; 141 efifb->fb_mask_blue = pixinfo->BlueMask; 142 efifb->fb_mask_reserved = pixinfo->ReservedMask; 143 break; 144 default: 145 result = 1; 146 break; 147 } 148 return (result); 149 } 150 151 static int 152 efifb_from_gop(struct efi_fb *efifb, EFI_GRAPHICS_OUTPUT_PROTOCOL_MODE *mode, 153 EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *info) 154 { 155 int result; 156 157 /* 158 * The Asus EEEPC 1025C, and possibly others, 159 * require the address to be masked. 160 */ 161 efifb->fb_addr = 162 #ifdef __i386__ 163 mode->FrameBufferBase & 0xffffffff; 164 #else 165 mode->FrameBufferBase; 166 #endif 167 efifb->fb_size = mode->FrameBufferSize; 168 efifb->fb_height = info->VerticalResolution; 169 efifb->fb_width = info->HorizontalResolution; 170 efifb->fb_stride = info->PixelsPerScanLine; 171 result = efifb_mask_from_pixfmt(efifb, info->PixelFormat, 172 &info->PixelInformation); 173 return (result); 174 } 175 176 static ssize_t 177 efifb_uga_find_pixel(EFI_UGA_DRAW_PROTOCOL *uga, u_int line, 178 EFI_PCI_IO_PROTOCOL *pciio, uint64_t addr, uint64_t size) 179 { 180 EFI_UGA_PIXEL pix0, pix1; 181 uint8_t *data1, *data2; 182 size_t count, maxcount = 1024; 183 ssize_t ofs; 184 EFI_STATUS status; 185 u_int idx; 186 187 status = uga->Blt(uga, &pix0, EfiUgaVideoToBltBuffer, 188 0, line, 0, 0, 1, 1, 0); 189 if (EFI_ERROR(status)) { 190 printf("UGA BLT operation failed (video->buffer)"); 191 return (-1); 192 } 193 pix1.Red = ~pix0.Red; 194 pix1.Green = ~pix0.Green; 195 pix1.Blue = ~pix0.Blue; 196 pix1.Reserved = 0; 197 198 data1 = calloc(maxcount, 2); 199 if (data1 == NULL) { 200 printf("Unable to allocate memory"); 201 return (-1); 202 } 203 data2 = data1 + maxcount; 204 205 ofs = 0; 206 while (size > 0) { 207 count = min(size, maxcount); 208 209 status = pciio->Mem.Read(pciio, EfiPciIoWidthUint32, 210 EFI_PCI_IO_PASS_THROUGH_BAR, addr + ofs, count >> 2, 211 data1); 212 if (EFI_ERROR(status)) { 213 printf("Error reading frame buffer (before)"); 214 goto fail; 215 } 216 status = uga->Blt(uga, &pix1, EfiUgaBltBufferToVideo, 217 0, 0, 0, line, 1, 1, 0); 218 if (EFI_ERROR(status)) { 219 printf("UGA BLT operation failed (modify)"); 220 goto fail; 221 } 222 status = pciio->Mem.Read(pciio, EfiPciIoWidthUint32, 223 EFI_PCI_IO_PASS_THROUGH_BAR, addr + ofs, count >> 2, 224 data2); 225 if (EFI_ERROR(status)) { 226 printf("Error reading frame buffer (after)"); 227 goto fail; 228 } 229 status = uga->Blt(uga, &pix0, EfiUgaBltBufferToVideo, 230 0, 0, 0, line, 1, 1, 0); 231 if (EFI_ERROR(status)) { 232 printf("UGA BLT operation failed (restore)"); 233 goto fail; 234 } 235 for (idx = 0; idx < count; idx++) { 236 if (data1[idx] != data2[idx]) { 237 free(data1); 238 return (ofs + (idx & ~3)); 239 } 240 } 241 ofs += count; 242 size -= count; 243 } 244 printf("No change detected in frame buffer"); 245 246 fail: 247 printf(" -- error %lu\n", DECODE_ERROR(status)); 248 free(data1); 249 return (-1); 250 } 251 252 static EFI_PCI_IO_PROTOCOL * 253 efifb_uga_get_pciio(void) 254 { 255 EFI_PCI_IO_PROTOCOL *pciio; 256 EFI_HANDLE *buf, *hp; 257 EFI_STATUS status; 258 UINTN bufsz; 259 260 /* Get all handles that support the UGA protocol. */ 261 bufsz = 0; 262 status = BS->LocateHandle(ByProtocol, &uga_guid, NULL, &bufsz, NULL); 263 if (status != EFI_BUFFER_TOO_SMALL) 264 return (NULL); 265 buf = malloc(bufsz); 266 status = BS->LocateHandle(ByProtocol, &uga_guid, NULL, &bufsz, buf); 267 if (status != EFI_SUCCESS) { 268 free(buf); 269 return (NULL); 270 } 271 bufsz /= sizeof(EFI_HANDLE); 272 273 /* Get the PCI I/O interface of the first handle that supports it. */ 274 pciio = NULL; 275 for (hp = buf; hp < buf + bufsz; hp++) { 276 status = OpenProtocolByHandle(*hp, &pciio_guid, 277 (void **)&pciio); 278 if (status == EFI_SUCCESS) { 279 free(buf); 280 return (pciio); 281 } 282 } 283 free(buf); 284 return (NULL); 285 } 286 287 static EFI_STATUS 288 efifb_uga_locate_framebuffer(EFI_PCI_IO_PROTOCOL *pciio, uint64_t *addrp, 289 uint64_t *sizep) 290 { 291 uint8_t *resattr; 292 uint64_t addr, size; 293 EFI_STATUS status; 294 u_int bar; 295 296 if (pciio == NULL) 297 return (EFI_DEVICE_ERROR); 298 299 /* Attempt to get the frame buffer address (imprecise). */ 300 *addrp = 0; 301 *sizep = 0; 302 for (bar = 0; bar < 6; bar++) { 303 status = pciio->GetBarAttributes(pciio, bar, NULL, 304 (void **)&resattr); 305 if (status != EFI_SUCCESS) 306 continue; 307 /* XXX magic offsets and constants. */ 308 if (resattr[0] == 0x87 && resattr[3] == 0) { 309 /* 32-bit address space descriptor (MEMIO) */ 310 addr = le32dec(resattr + 10); 311 size = le32dec(resattr + 22); 312 } else if (resattr[0] == 0x8a && resattr[3] == 0) { 313 /* 64-bit address space descriptor (MEMIO) */ 314 addr = le64dec(resattr + 14); 315 size = le64dec(resattr + 38); 316 } else { 317 addr = 0; 318 size = 0; 319 } 320 BS->FreePool(resattr); 321 if (addr == 0 || size == 0) 322 continue; 323 324 /* We assume the largest BAR is the frame buffer. */ 325 if (size > *sizep) { 326 *addrp = addr; 327 *sizep = size; 328 } 329 } 330 return ((*addrp == 0 || *sizep == 0) ? EFI_DEVICE_ERROR : 0); 331 } 332 333 static int 334 efifb_from_uga(struct efi_fb *efifb) 335 { 336 EFI_PCI_IO_PROTOCOL *pciio; 337 char *ev, *p; 338 EFI_STATUS status; 339 ssize_t offset; 340 uint64_t fbaddr; 341 uint32_t horiz, vert, stride; 342 uint32_t np, depth, refresh; 343 344 status = uga->GetMode(uga, &horiz, &vert, &depth, &refresh); 345 if (EFI_ERROR(status)) 346 return (1); 347 efifb->fb_height = vert; 348 efifb->fb_width = horiz; 349 /* Paranoia... */ 350 if (efifb->fb_height == 0 || efifb->fb_width == 0) 351 return (1); 352 353 /* The color masks are fixed AFAICT. */ 354 efifb_mask_from_pixfmt(efifb, PixelBlueGreenRedReserved8BitPerColor, 355 NULL); 356 357 /* pciio can be NULL on return! */ 358 pciio = efifb_uga_get_pciio(); 359 360 /* Try to find the frame buffer. */ 361 status = efifb_uga_locate_framebuffer(pciio, &efifb->fb_addr, 362 &efifb->fb_size); 363 if (EFI_ERROR(status)) { 364 efifb->fb_addr = 0; 365 efifb->fb_size = 0; 366 } 367 368 /* 369 * There's no reliable way to detect the frame buffer or the 370 * offset within the frame buffer of the visible region, nor 371 * the stride. Our only option is to look at the system and 372 * fill in the blanks based on that. Luckily, UGA was mostly 373 * only used on Apple hardware. 374 */ 375 offset = -1; 376 ev = getenv("smbios.system.maker"); 377 if (ev != NULL && !strcmp(ev, "Apple Inc.")) { 378 ev = getenv("smbios.system.product"); 379 if (ev != NULL && !strcmp(ev, "iMac7,1")) { 380 /* These are the expected values we should have. */ 381 horiz = 1680; 382 vert = 1050; 383 fbaddr = 0xc0000000; 384 /* These are the missing bits. */ 385 offset = 0x10000; 386 stride = 1728; 387 } else if (ev != NULL && !strcmp(ev, "MacBook3,1")) { 388 /* These are the expected values we should have. */ 389 horiz = 1280; 390 vert = 800; 391 fbaddr = 0xc0000000; 392 /* These are the missing bits. */ 393 offset = 0x0; 394 stride = 2048; 395 } 396 } 397 398 /* 399 * If this is hardware we know, make sure that it looks familiar 400 * before we accept our hardcoded values. 401 */ 402 if (offset >= 0 && efifb->fb_width == horiz && 403 efifb->fb_height == vert && efifb->fb_addr == fbaddr) { 404 efifb->fb_addr += offset; 405 efifb->fb_size -= offset; 406 efifb->fb_stride = stride; 407 return (0); 408 } else if (offset >= 0) { 409 printf("Hardware make/model known, but graphics not " 410 "as expected.\n"); 411 printf("Console may not work!\n"); 412 } 413 414 /* 415 * The stride is equal or larger to the width. Often it's the 416 * next larger power of two. We'll start with that... 417 */ 418 efifb->fb_stride = efifb->fb_width; 419 do { 420 np = efifb->fb_stride & (efifb->fb_stride - 1); 421 if (np) { 422 efifb->fb_stride |= (np - 1); 423 efifb->fb_stride++; 424 } 425 } while (np); 426 427 ev = getenv("hw.efifb.address"); 428 if (ev == NULL) { 429 if (efifb->fb_addr == 0) { 430 printf("Please set hw.efifb.address and " 431 "hw.efifb.stride.\n"); 432 return (1); 433 } 434 435 /* 436 * The visible part of the frame buffer may not start at 437 * offset 0, so try to detect it. Note that we may not 438 * always be able to read from the frame buffer, which 439 * means that we may not be able to detect anything. In 440 * that case, we would take a long time scanning for a 441 * pixel change in the frame buffer, which would have it 442 * appear that we're hanging, so we limit the scan to 443 * 1/256th of the frame buffer. This number is mostly 444 * based on PR 202730 and the fact that on a MacBoook, 445 * where we can't read from the frame buffer the offset 446 * of the visible region is 0. In short: we want to scan 447 * enough to handle all adapters that have an offset 448 * larger than 0 and we want to scan as little as we can 449 * to not appear to hang when we can't read from the 450 * frame buffer. 451 */ 452 offset = efifb_uga_find_pixel(uga, 0, pciio, efifb->fb_addr, 453 efifb->fb_size >> 8); 454 if (offset == -1) { 455 printf("Unable to reliably detect frame buffer.\n"); 456 } else if (offset > 0) { 457 efifb->fb_addr += offset; 458 efifb->fb_size -= offset; 459 } 460 } else { 461 offset = 0; 462 efifb->fb_size = efifb->fb_height * efifb->fb_stride * 4; 463 efifb->fb_addr = strtoul(ev, &p, 0); 464 if (*p != '\0') 465 return (1); 466 } 467 468 ev = getenv("hw.efifb.stride"); 469 if (ev == NULL) { 470 if (pciio != NULL && offset != -1) { 471 /* Determine the stride. */ 472 offset = efifb_uga_find_pixel(uga, 1, pciio, 473 efifb->fb_addr, horiz * 8); 474 if (offset != -1) 475 efifb->fb_stride = offset >> 2; 476 } else { 477 printf("Unable to reliably detect the stride.\n"); 478 } 479 } else { 480 efifb->fb_stride = strtoul(ev, &p, 0); 481 if (*p != '\0') 482 return (1); 483 } 484 485 /* 486 * We finalized on the stride, so recalculate the size of the 487 * frame buffer. 488 */ 489 efifb->fb_size = efifb->fb_height * efifb->fb_stride * 4; 490 return (0); 491 } 492 493 /* 494 * Fetch EDID info. Caller must free the buffer. 495 */ 496 static struct vesa_edid_info * 497 efifb_gop_get_edid(EFI_HANDLE h) 498 { 499 const uint8_t magic[] = EDID_MAGIC; 500 EFI_EDID_ACTIVE_PROTOCOL *edid; 501 struct vesa_edid_info *edid_infop; 502 EFI_GUID *guid; 503 EFI_STATUS status; 504 size_t size; 505 506 guid = &active_edid_guid; 507 status = BS->OpenProtocol(h, guid, (void **)&edid, IH, NULL, 508 EFI_OPEN_PROTOCOL_GET_PROTOCOL); 509 if (status != EFI_SUCCESS || 510 edid->SizeOfEdid == 0) { 511 guid = &discovered_edid_guid; 512 status = BS->OpenProtocol(h, guid, (void **)&edid, IH, NULL, 513 EFI_OPEN_PROTOCOL_GET_PROTOCOL); 514 if (status != EFI_SUCCESS || 515 edid->SizeOfEdid == 0) 516 return (NULL); 517 } 518 519 size = MAX(sizeof(*edid_infop), edid->SizeOfEdid); 520 521 edid_infop = calloc(1, size); 522 if (edid_infop == NULL) 523 return (NULL); 524 525 memcpy(edid_infop, edid->Edid, edid->SizeOfEdid); 526 527 /* Validate EDID */ 528 if (memcmp(edid_infop, magic, sizeof (magic)) != 0) 529 goto error; 530 531 if (edid_infop->header.version != 1) 532 goto error; 533 534 return (edid_infop); 535 error: 536 free(edid_infop); 537 return (NULL); 538 } 539 540 static bool 541 efifb_get_edid(edid_res_list_t *res) 542 { 543 bool rv = false; 544 545 if (edid_info == NULL) 546 edid_info = efifb_gop_get_edid(gop_handle); 547 548 if (edid_info != NULL) 549 rv = gfx_get_edid_resolution(edid_info, res); 550 551 return (rv); 552 } 553 554 bool 555 efi_has_gop(void) 556 { 557 EFI_STATUS status; 558 EFI_HANDLE *hlist; 559 UINTN hsize; 560 561 hsize = 0; 562 hlist = NULL; 563 status = BS->LocateHandle(ByProtocol, &gop_guid, NULL, &hsize, hlist); 564 565 return (status == EFI_BUFFER_TOO_SMALL); 566 } 567 568 569 int 570 efi_find_framebuffer(teken_gfx_t *gfx_state) 571 { 572 EFI_PHYSICAL_ADDRESS ptr; 573 EFI_HANDLE *hlist; 574 UINTN nhandles, i, hsize; 575 struct efi_fb efifb; 576 EFI_STATUS status; 577 int rv; 578 579 gfx_state->tg_fb_type = FB_TEXT; 580 581 hsize = 0; 582 hlist = NULL; 583 status = BS->LocateHandle(ByProtocol, &gop_guid, NULL, &hsize, hlist); 584 if (status == EFI_BUFFER_TOO_SMALL) { 585 hlist = malloc(hsize); 586 if (hlist == NULL) 587 return (ENOMEM); 588 status = BS->LocateHandle(ByProtocol, &gop_guid, NULL, &hsize, 589 hlist); 590 if (EFI_ERROR(status)) 591 free(hlist); 592 } 593 if (EFI_ERROR(status)) 594 return (efi_status_to_errno(status)); 595 596 nhandles = hsize / sizeof(*hlist); 597 598 /* 599 * Search for ConOut protocol, if not found, use first handle. 600 */ 601 gop_handle = NULL; 602 for (i = 0; i < nhandles; i++) { 603 EFI_GRAPHICS_OUTPUT_PROTOCOL *tgop; 604 void *dummy; 605 606 status = OpenProtocolByHandle(hlist[i], &gop_guid, (void **)&tgop); 607 if (status != EFI_SUCCESS) 608 continue; 609 610 if (tgop->Mode->Info->PixelFormat == PixelBltOnly || 611 tgop->Mode->Info->PixelFormat >= PixelFormatMax) 612 continue; 613 614 status = OpenProtocolByHandle(hlist[i], &conout_guid, &dummy); 615 if (status == EFI_SUCCESS) { 616 gop_handle = hlist[i]; 617 gop = tgop; 618 break; 619 } else if (gop_handle == NULL) { 620 gop_handle = hlist[i]; 621 gop = tgop; 622 } 623 } 624 625 free(hlist); 626 627 if (gop_handle != NULL) { 628 gfx_state->tg_fb_type = FB_GOP; 629 gfx_state->tg_private = gop; 630 if (edid_info == NULL) 631 edid_info = efifb_gop_get_edid(gop_handle); 632 } else { 633 status = BS->LocateProtocol(&uga_guid, NULL, (VOID **)&uga); 634 if (status == EFI_SUCCESS) { 635 gfx_state->tg_fb_type = FB_UGA; 636 gfx_state->tg_private = uga; 637 } else { 638 return (efi_status_to_errno(status)); 639 } 640 } 641 642 switch (gfx_state->tg_fb_type) { 643 case FB_GOP: 644 rv = efifb_from_gop(&efifb, gop->Mode, gop->Mode->Info); 645 break; 646 647 case FB_UGA: 648 rv = efifb_from_uga(&efifb); 649 break; 650 651 default: 652 return (EINVAL); 653 } 654 655 if (rv != 0) 656 return (rv); 657 658 gfx_state->tg_fb.fb_addr = efifb.fb_addr; 659 gfx_state->tg_fb.fb_size = efifb.fb_size; 660 gfx_state->tg_fb.fb_height = efifb.fb_height; 661 gfx_state->tg_fb.fb_width = efifb.fb_width; 662 gfx_state->tg_fb.fb_stride = efifb.fb_stride; 663 gfx_state->tg_fb.fb_mask_red = efifb.fb_mask_red; 664 gfx_state->tg_fb.fb_mask_green = efifb.fb_mask_green; 665 gfx_state->tg_fb.fb_mask_blue = efifb.fb_mask_blue; 666 gfx_state->tg_fb.fb_mask_reserved = efifb.fb_mask_reserved; 667 668 gfx_state->tg_fb.fb_bpp = fls(efifb.fb_mask_red | efifb.fb_mask_green | 669 efifb.fb_mask_blue | efifb.fb_mask_reserved); 670 671 if (gfx_state->tg_shadow_fb != NULL) 672 BS->FreePages((uintptr_t)gfx_state->tg_shadow_fb, 673 gfx_state->tg_shadow_sz); 674 gfx_state->tg_shadow_sz = 675 EFI_SIZE_TO_PAGES(efifb.fb_height * efifb.fb_width * 676 sizeof(EFI_GRAPHICS_OUTPUT_BLT_PIXEL)); 677 status = BS->AllocatePages(AllocateAnyPages, EfiLoaderData, 678 gfx_state->tg_shadow_sz, &ptr); 679 gfx_state->tg_shadow_fb = status == EFI_SUCCESS ? 680 (uint32_t *)(uintptr_t)ptr : NULL; 681 682 return (0); 683 } 684 685 static void 686 print_efifb(int mode, struct efi_fb *efifb, int verbose) 687 { 688 u_int depth; 689 690 if (mode >= 0) 691 printf("mode %d: ", mode); 692 depth = efifb_color_depth(efifb); 693 printf("%ux%ux%u, stride=%u", efifb->fb_width, efifb->fb_height, 694 depth, efifb->fb_stride); 695 if (verbose) { 696 printf("\n frame buffer: address=%jx, size=%jx", 697 (uintmax_t)efifb->fb_addr, (uintmax_t)efifb->fb_size); 698 printf("\n color mask: R=%08x, G=%08x, B=%08x\n", 699 efifb->fb_mask_red, efifb->fb_mask_green, 700 efifb->fb_mask_blue); 701 } 702 } 703 704 static bool 705 efi_resolution_compare(struct named_resolution *res, const char *cmp) 706 { 707 708 if (strcasecmp(res->name, cmp) == 0) 709 return (true); 710 if (res->alias != NULL && strcasecmp(res->alias, cmp) == 0) 711 return (true); 712 return (false); 713 } 714 715 716 static void 717 efi_get_max_resolution(int *width, int *height) 718 { 719 struct named_resolution *res; 720 char *maxres; 721 char *height_start, *width_start; 722 int idx; 723 724 *width = *height = 0; 725 maxres = getenv("efi_max_resolution"); 726 /* No max_resolution set? Bail out; choose highest resolution */ 727 if (maxres == NULL) 728 return; 729 /* See if it matches one of our known resolutions */ 730 for (idx = 0; idx < nitems(resolutions); ++idx) { 731 res = &resolutions[idx]; 732 if (efi_resolution_compare(res, maxres)) { 733 *width = res->width; 734 *height = res->height; 735 return; 736 } 737 } 738 /* Not a known resolution, try to parse it; make a copy we can modify */ 739 maxres = strdup(maxres); 740 if (maxres == NULL) 741 return; 742 height_start = strchr(maxres, 'x'); 743 if (height_start == NULL) { 744 free(maxres); 745 return; 746 } 747 width_start = maxres; 748 *height_start++ = 0; 749 /* Errors from this will effectively mean "no max" */ 750 *width = (int)strtol(width_start, NULL, 0); 751 *height = (int)strtol(height_start, NULL, 0); 752 free(maxres); 753 } 754 755 static int 756 gop_autoresize(void) 757 { 758 struct efi_fb efifb; 759 EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *info; 760 EFI_STATUS status; 761 UINTN infosz; 762 UINT32 best_mode, currdim, maxdim, mode; 763 int height, max_height, max_width, width; 764 765 best_mode = maxdim = 0; 766 efi_get_max_resolution(&max_width, &max_height); 767 for (mode = 0; mode < gop->Mode->MaxMode; mode++) { 768 status = gop->QueryMode(gop, mode, &infosz, &info); 769 if (EFI_ERROR(status)) 770 continue; 771 efifb_from_gop(&efifb, gop->Mode, info); 772 width = info->HorizontalResolution; 773 height = info->VerticalResolution; 774 currdim = width * height; 775 if (currdim > maxdim) { 776 if ((max_width != 0 && width > max_width) || 777 (max_height != 0 && height > max_height)) 778 continue; 779 maxdim = currdim; 780 best_mode = mode; 781 } 782 } 783 784 if (maxdim != 0) { 785 status = gop->SetMode(gop, best_mode); 786 if (EFI_ERROR(status)) { 787 snprintf(command_errbuf, sizeof(command_errbuf), 788 "gop_autoresize: Unable to set mode to %u (error=%lu)", 789 mode, DECODE_ERROR(status)); 790 return (CMD_ERROR); 791 } 792 (void) cons_update_mode(true); 793 } 794 return (CMD_OK); 795 } 796 797 static int 798 text_autoresize() 799 { 800 SIMPLE_TEXT_OUTPUT_INTERFACE *conout; 801 EFI_STATUS status; 802 UINTN i, max_dim, best_mode, cols, rows; 803 804 conout = ST->ConOut; 805 max_dim = best_mode = 0; 806 for (i = 0; i < conout->Mode->MaxMode; i++) { 807 status = conout->QueryMode(conout, i, &cols, &rows); 808 if (EFI_ERROR(status)) 809 continue; 810 if (cols * rows > max_dim) { 811 max_dim = cols * rows; 812 best_mode = i; 813 } 814 } 815 if (max_dim > 0) 816 conout->SetMode(conout, best_mode); 817 (void) cons_update_mode(true); 818 return (CMD_OK); 819 } 820 821 static int 822 uga_autoresize(void) 823 { 824 825 return (text_autoresize()); 826 } 827 828 COMMAND_SET(efi_autoresize, "efi-autoresizecons", "EFI Auto-resize Console", command_autoresize); 829 830 static int 831 command_autoresize(int argc, char *argv[]) 832 { 833 char *textmode; 834 835 textmode = getenv("hw.vga.textmode"); 836 /* If it's set and non-zero, we'll select a console mode instead */ 837 if (textmode != NULL && strcmp(textmode, "0") != 0) 838 return (text_autoresize()); 839 840 if (gop != NULL) 841 return (gop_autoresize()); 842 843 if (uga != NULL) 844 return (uga_autoresize()); 845 846 snprintf(command_errbuf, sizeof(command_errbuf), 847 "%s: Neither Graphics Output Protocol nor Universal Graphics Adapter present", 848 argv[0]); 849 850 /* 851 * Default to text_autoresize if we have neither GOP or UGA. This won't 852 * give us the most ideal resolution, but it will at least leave us 853 * functional rather than failing the boot for an objectively bad 854 * reason. 855 */ 856 return (text_autoresize()); 857 } 858 859 COMMAND_SET(gop, "gop", "graphics output protocol", command_gop); 860 861 static int 862 command_gop(int argc, char *argv[]) 863 { 864 struct efi_fb efifb; 865 EFI_STATUS status; 866 u_int mode; 867 extern bool ignore_gop_blt; 868 869 if (gop == NULL) { 870 snprintf(command_errbuf, sizeof(command_errbuf), 871 "%s: Graphics Output Protocol not present", argv[0]); 872 return (CMD_ERROR); 873 } 874 875 if (argc < 2) 876 goto usage; 877 878 if (strcmp(argv[1], "set") == 0) { 879 char *cp; 880 881 if (argc != 3) 882 goto usage; 883 mode = strtol(argv[2], &cp, 0); 884 if (cp[0] != '\0') { 885 sprintf(command_errbuf, "mode is an integer"); 886 return (CMD_ERROR); 887 } 888 status = gop->SetMode(gop, mode); 889 if (EFI_ERROR(status)) { 890 snprintf(command_errbuf, sizeof(command_errbuf), 891 "%s: Unable to set mode to %u (error=%lu)", 892 argv[0], mode, DECODE_ERROR(status)); 893 return (CMD_ERROR); 894 } 895 (void) cons_update_mode(true); 896 } else if (strcmp(argv[1], "blt") == 0) { 897 /* 898 * "blt on" does allow gop->Blt() to be used (default). 899 * "blt off" does block gop->Blt() to be used and use 900 * software rendering instead. 901 */ 902 if (argc != 3) 903 goto usage; 904 if (strcmp(argv[2], "on") == 0) 905 ignore_gop_blt = false; 906 else if (strcmp(argv[2], "off") == 0) 907 ignore_gop_blt = true; 908 else 909 goto usage; 910 } else if (strcmp(argv[1], "off") == 0) { 911 /* 912 * Tell console to use SimpleTextOutput protocol. 913 * This means that we do not render the glyphs, but rely on 914 * UEFI firmware to draw on ConsOut device(s). 915 */ 916 (void) cons_update_mode(false); 917 } else if (strcmp(argv[1], "get") == 0) { 918 edid_res_list_t res; 919 920 if (argc != 2) 921 goto usage; 922 TAILQ_INIT(&res); 923 efifb_from_gop(&efifb, gop->Mode, gop->Mode->Info); 924 if (efifb_get_edid(&res)) { 925 struct resolution *rp; 926 927 printf("EDID"); 928 while ((rp = TAILQ_FIRST(&res)) != NULL) { 929 printf(" %dx%d", rp->width, rp->height); 930 TAILQ_REMOVE(&res, rp, next); 931 free(rp); 932 } 933 printf("\n"); 934 } else { 935 printf("no EDID information\n"); 936 } 937 print_efifb(gop->Mode->Mode, &efifb, 1); 938 printf("\n"); 939 } else if (strcmp(argv[1], "list") == 0) { 940 EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *info; 941 UINTN infosz; 942 943 if (argc != 2) 944 goto usage; 945 946 pager_open(); 947 for (mode = 0; mode < gop->Mode->MaxMode; mode++) { 948 status = gop->QueryMode(gop, mode, &infosz, &info); 949 if (EFI_ERROR(status)) 950 continue; 951 efifb_from_gop(&efifb, gop->Mode, info); 952 print_efifb(mode, &efifb, 0); 953 if (pager_output("\n")) 954 break; 955 } 956 pager_close(); 957 } 958 return (CMD_OK); 959 960 usage: 961 snprintf(command_errbuf, sizeof(command_errbuf), 962 "usage: %s [list | get | set <mode> | off | blt <on|off>]", argv[0]); 963 return (CMD_ERROR); 964 } 965 966 COMMAND_SET(uga, "uga", "universal graphics adapter", command_uga); 967 968 static int 969 command_uga(int argc, char *argv[]) 970 { 971 struct efi_fb efifb; 972 973 if (uga == NULL) { 974 snprintf(command_errbuf, sizeof(command_errbuf), 975 "%s: UGA Protocol not present", argv[0]); 976 return (CMD_ERROR); 977 } 978 979 if (argc != 1) 980 goto usage; 981 982 if (efifb_from_uga(&efifb) != CMD_OK) { 983 snprintf(command_errbuf, sizeof(command_errbuf), 984 "%s: Unable to get UGA information", argv[0]); 985 return (CMD_ERROR); 986 } 987 988 print_efifb(-1, &efifb, 1); 989 printf("\n"); 990 return (CMD_OK); 991 992 usage: 993 snprintf(command_errbuf, sizeof(command_errbuf), "usage: %s", argv[0]); 994 return (CMD_ERROR); 995 } 996