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 } else if (ev != NULL && !strcmp(ev, "MacBookPro3,1")) { 396 /* 397 * Valid for MacBookPro 17" with standard resolution. 398 * Other Models are: 399 * MacBookPro 15" with horiz=1440 400 * MacBookPro 17" with horiz=1920 401 */ 402 403 /* These are the expected values we should have. */ 404 if (horiz == 1680) { 405 vert = 1050; 406 fbaddr = 0xc0000000; 407 /* These are the missing bits. */ 408 stride = 2048; 409 /* 24 scan lines down */ 410 offset = stride * 4 * 24; 411 } 412 } 413 } 414 415 /* 416 * If this is hardware we know, make sure that it looks familiar 417 * before we accept our hardcoded values. 418 */ 419 if (offset >= 0 && efifb->fb_width == horiz && 420 efifb->fb_height == vert && efifb->fb_addr == fbaddr) { 421 efifb->fb_addr += offset; 422 efifb->fb_size -= offset; 423 efifb->fb_stride = stride; 424 return (0); 425 } else if (offset >= 0) { 426 printf("Hardware make/model known, but graphics not " 427 "as expected.\n"); 428 printf("Console may not work!\n"); 429 } 430 431 /* 432 * The stride is equal or larger to the width. Often it's the 433 * next larger power of two. We'll start with that... 434 */ 435 efifb->fb_stride = efifb->fb_width; 436 do { 437 np = efifb->fb_stride & (efifb->fb_stride - 1); 438 if (np) { 439 efifb->fb_stride |= (np - 1); 440 efifb->fb_stride++; 441 } 442 } while (np); 443 444 ev = getenv("hw.efifb.address"); 445 if (ev == NULL) { 446 if (efifb->fb_addr == 0) { 447 printf("Please set hw.efifb.address and " 448 "hw.efifb.stride.\n"); 449 return (1); 450 } 451 452 /* 453 * The visible part of the frame buffer may not start at 454 * offset 0, so try to detect it. Note that we may not 455 * always be able to read from the frame buffer, which 456 * means that we may not be able to detect anything. In 457 * that case, we would take a long time scanning for a 458 * pixel change in the frame buffer, which would have it 459 * appear that we're hanging, so we limit the scan to 460 * 1/256th of the frame buffer. This number is mostly 461 * based on PR 202730 and the fact that on a MacBoook, 462 * where we can't read from the frame buffer the offset 463 * of the visible region is 0. In short: we want to scan 464 * enough to handle all adapters that have an offset 465 * larger than 0 and we want to scan as little as we can 466 * to not appear to hang when we can't read from the 467 * frame buffer. 468 */ 469 offset = efifb_uga_find_pixel(uga, 0, pciio, efifb->fb_addr, 470 efifb->fb_size >> 8); 471 if (offset == -1) { 472 printf("Unable to reliably detect frame buffer.\n"); 473 } else if (offset > 0) { 474 efifb->fb_addr += offset; 475 efifb->fb_size -= offset; 476 } 477 } else { 478 offset = 0; 479 efifb->fb_size = efifb->fb_height * efifb->fb_stride * 4; 480 efifb->fb_addr = strtoul(ev, &p, 0); 481 if (*p != '\0') 482 return (1); 483 } 484 485 ev = getenv("hw.efifb.stride"); 486 if (ev == NULL) { 487 if (pciio != NULL && offset != -1) { 488 /* Determine the stride. */ 489 offset = efifb_uga_find_pixel(uga, 1, pciio, 490 efifb->fb_addr, horiz * 8); 491 if (offset != -1) 492 efifb->fb_stride = offset >> 2; 493 } else { 494 printf("Unable to reliably detect the stride.\n"); 495 } 496 } else { 497 efifb->fb_stride = strtoul(ev, &p, 0); 498 if (*p != '\0') 499 return (1); 500 } 501 502 /* 503 * We finalized on the stride, so recalculate the size of the 504 * frame buffer. 505 */ 506 efifb->fb_size = efifb->fb_height * efifb->fb_stride * 4; 507 return (0); 508 } 509 510 /* 511 * Fetch EDID info. Caller must free the buffer. 512 */ 513 static struct vesa_edid_info * 514 efifb_gop_get_edid(EFI_HANDLE h) 515 { 516 const uint8_t magic[] = EDID_MAGIC; 517 EFI_EDID_ACTIVE_PROTOCOL *edid; 518 struct vesa_edid_info *edid_infop; 519 EFI_GUID *guid; 520 EFI_STATUS status; 521 size_t size; 522 523 guid = &active_edid_guid; 524 status = BS->OpenProtocol(h, guid, (void **)&edid, IH, NULL, 525 EFI_OPEN_PROTOCOL_GET_PROTOCOL); 526 if (status != EFI_SUCCESS || 527 edid->SizeOfEdid == 0) { 528 guid = &discovered_edid_guid; 529 status = BS->OpenProtocol(h, guid, (void **)&edid, IH, NULL, 530 EFI_OPEN_PROTOCOL_GET_PROTOCOL); 531 if (status != EFI_SUCCESS || 532 edid->SizeOfEdid == 0) 533 return (NULL); 534 } 535 536 size = MAX(sizeof(*edid_infop), edid->SizeOfEdid); 537 538 edid_infop = calloc(1, size); 539 if (edid_infop == NULL) 540 return (NULL); 541 542 memcpy(edid_infop, edid->Edid, edid->SizeOfEdid); 543 544 /* Validate EDID */ 545 if (memcmp(edid_infop, magic, sizeof (magic)) != 0) 546 goto error; 547 548 if (edid_infop->header.version != 1) 549 goto error; 550 551 return (edid_infop); 552 error: 553 free(edid_infop); 554 return (NULL); 555 } 556 557 static bool 558 efifb_get_edid(edid_res_list_t *res) 559 { 560 bool rv = false; 561 562 if (edid_info == NULL) 563 edid_info = efifb_gop_get_edid(gop_handle); 564 565 if (edid_info != NULL) 566 rv = gfx_get_edid_resolution(edid_info, res); 567 568 return (rv); 569 } 570 571 bool 572 efi_has_gop(void) 573 { 574 EFI_STATUS status; 575 EFI_HANDLE *hlist; 576 UINTN hsize; 577 578 hsize = 0; 579 hlist = NULL; 580 status = BS->LocateHandle(ByProtocol, &gop_guid, NULL, &hsize, hlist); 581 582 return (status == EFI_BUFFER_TOO_SMALL); 583 } 584 585 586 int 587 efi_find_framebuffer(teken_gfx_t *gfx_state) 588 { 589 EFI_PHYSICAL_ADDRESS ptr; 590 EFI_HANDLE *hlist; 591 UINTN nhandles, i, hsize; 592 struct efi_fb efifb; 593 EFI_STATUS status; 594 int rv; 595 596 gfx_state->tg_fb_type = FB_TEXT; 597 598 hsize = 0; 599 hlist = NULL; 600 status = BS->LocateHandle(ByProtocol, &gop_guid, NULL, &hsize, hlist); 601 if (status == EFI_BUFFER_TOO_SMALL) { 602 hlist = malloc(hsize); 603 if (hlist == NULL) 604 return (ENOMEM); 605 status = BS->LocateHandle(ByProtocol, &gop_guid, NULL, &hsize, 606 hlist); 607 if (EFI_ERROR(status)) 608 free(hlist); 609 } 610 611 if (EFI_ERROR(status)) { 612 status = BS->LocateProtocol(&uga_guid, NULL, (VOID **)&uga); 613 if (status == EFI_SUCCESS) { 614 gfx_state->tg_fb_type = FB_UGA; 615 gfx_state->tg_private = uga; 616 } else { 617 return (efi_status_to_errno(status)); 618 } 619 } else { 620 nhandles = hsize / sizeof(*hlist); 621 622 /* 623 * Search for ConOut protocol, if not found, use first handle. 624 */ 625 gop_handle = NULL; 626 for (i = 0; i < nhandles; i++) { 627 EFI_GRAPHICS_OUTPUT_PROTOCOL *tgop; 628 void *dummy; 629 630 status = OpenProtocolByHandle(hlist[i], &gop_guid, 631 (void **)&tgop); 632 if (status != EFI_SUCCESS) 633 continue; 634 635 if (tgop->Mode->Info->PixelFormat == PixelBltOnly || 636 tgop->Mode->Info->PixelFormat >= PixelFormatMax) 637 continue; 638 639 status = OpenProtocolByHandle(hlist[i], &conout_guid, 640 &dummy); 641 if (status == EFI_SUCCESS) { 642 gop_handle = hlist[i]; 643 gop = tgop; 644 break; 645 } else if (gop_handle == NULL) { 646 gop_handle = hlist[i]; 647 gop = tgop; 648 } 649 } 650 651 free(hlist); 652 if (gop_handle == NULL) 653 return (ENXIO); 654 655 gfx_state->tg_fb_type = FB_GOP; 656 gfx_state->tg_private = gop; 657 if (edid_info == NULL) 658 edid_info = efifb_gop_get_edid(gop_handle); 659 } 660 661 switch (gfx_state->tg_fb_type) { 662 case FB_GOP: 663 rv = efifb_from_gop(&efifb, gop->Mode, gop->Mode->Info); 664 break; 665 666 case FB_UGA: 667 rv = efifb_from_uga(&efifb); 668 break; 669 670 default: 671 return (EINVAL); 672 } 673 674 if (rv != 0) 675 return (rv); 676 677 gfx_state->tg_fb.fb_addr = efifb.fb_addr; 678 gfx_state->tg_fb.fb_size = efifb.fb_size; 679 gfx_state->tg_fb.fb_height = efifb.fb_height; 680 gfx_state->tg_fb.fb_width = efifb.fb_width; 681 gfx_state->tg_fb.fb_stride = efifb.fb_stride; 682 gfx_state->tg_fb.fb_mask_red = efifb.fb_mask_red; 683 gfx_state->tg_fb.fb_mask_green = efifb.fb_mask_green; 684 gfx_state->tg_fb.fb_mask_blue = efifb.fb_mask_blue; 685 gfx_state->tg_fb.fb_mask_reserved = efifb.fb_mask_reserved; 686 687 gfx_state->tg_fb.fb_bpp = fls(efifb.fb_mask_red | efifb.fb_mask_green | 688 efifb.fb_mask_blue | efifb.fb_mask_reserved); 689 690 if (gfx_state->tg_shadow_fb != NULL) 691 BS->FreePages((uintptr_t)gfx_state->tg_shadow_fb, 692 gfx_state->tg_shadow_sz); 693 gfx_state->tg_shadow_sz = 694 EFI_SIZE_TO_PAGES(efifb.fb_height * efifb.fb_width * 695 sizeof(EFI_GRAPHICS_OUTPUT_BLT_PIXEL)); 696 status = BS->AllocatePages(AllocateAnyPages, EfiLoaderData, 697 gfx_state->tg_shadow_sz, &ptr); 698 gfx_state->tg_shadow_fb = status == EFI_SUCCESS ? 699 (uint32_t *)(uintptr_t)ptr : NULL; 700 701 return (0); 702 } 703 704 static void 705 print_efifb(int mode, struct efi_fb *efifb, int verbose) 706 { 707 u_int depth; 708 709 if (mode >= 0) 710 printf("mode %d: ", mode); 711 depth = efifb_color_depth(efifb); 712 printf("%ux%ux%u, stride=%u", efifb->fb_width, efifb->fb_height, 713 depth, efifb->fb_stride); 714 if (verbose) { 715 printf("\n frame buffer: address=%jx, size=%jx", 716 (uintmax_t)efifb->fb_addr, (uintmax_t)efifb->fb_size); 717 printf("\n color mask: R=%08x, G=%08x, B=%08x\n", 718 efifb->fb_mask_red, efifb->fb_mask_green, 719 efifb->fb_mask_blue); 720 } 721 } 722 723 static bool 724 efi_resolution_compare(struct named_resolution *res, const char *cmp) 725 { 726 727 if (strcasecmp(res->name, cmp) == 0) 728 return (true); 729 if (res->alias != NULL && strcasecmp(res->alias, cmp) == 0) 730 return (true); 731 return (false); 732 } 733 734 735 static void 736 efi_get_max_resolution(int *width, int *height) 737 { 738 struct named_resolution *res; 739 char *maxres; 740 char *height_start, *width_start; 741 int idx; 742 743 *width = *height = 0; 744 maxres = getenv("efi_max_resolution"); 745 /* No max_resolution set? Bail out; choose highest resolution */ 746 if (maxres == NULL) 747 return; 748 /* See if it matches one of our known resolutions */ 749 for (idx = 0; idx < nitems(resolutions); ++idx) { 750 res = &resolutions[idx]; 751 if (efi_resolution_compare(res, maxres)) { 752 *width = res->width; 753 *height = res->height; 754 return; 755 } 756 } 757 /* Not a known resolution, try to parse it; make a copy we can modify */ 758 maxres = strdup(maxres); 759 if (maxres == NULL) 760 return; 761 height_start = strchr(maxres, 'x'); 762 if (height_start == NULL) { 763 free(maxres); 764 return; 765 } 766 width_start = maxres; 767 *height_start++ = 0; 768 /* Errors from this will effectively mean "no max" */ 769 *width = (int)strtol(width_start, NULL, 0); 770 *height = (int)strtol(height_start, NULL, 0); 771 free(maxres); 772 } 773 774 static int 775 gop_autoresize(void) 776 { 777 struct efi_fb efifb; 778 EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *info; 779 EFI_STATUS status; 780 UINTN infosz; 781 UINT32 best_mode, currdim, maxdim, mode; 782 int height, max_height, max_width, width; 783 784 best_mode = maxdim = 0; 785 efi_get_max_resolution(&max_width, &max_height); 786 for (mode = 0; mode < gop->Mode->MaxMode; mode++) { 787 status = gop->QueryMode(gop, mode, &infosz, &info); 788 if (EFI_ERROR(status)) 789 continue; 790 efifb_from_gop(&efifb, gop->Mode, info); 791 width = info->HorizontalResolution; 792 height = info->VerticalResolution; 793 currdim = width * height; 794 if (currdim > maxdim) { 795 if ((max_width != 0 && width > max_width) || 796 (max_height != 0 && height > max_height)) 797 continue; 798 maxdim = currdim; 799 best_mode = mode; 800 } 801 } 802 803 if (maxdim != 0) { 804 status = gop->SetMode(gop, best_mode); 805 if (EFI_ERROR(status)) { 806 snprintf(command_errbuf, sizeof(command_errbuf), 807 "gop_autoresize: Unable to set mode to %u (error=%lu)", 808 mode, DECODE_ERROR(status)); 809 return (CMD_ERROR); 810 } 811 (void) cons_update_mode(true); 812 } 813 return (CMD_OK); 814 } 815 816 static int 817 text_autoresize() 818 { 819 SIMPLE_TEXT_OUTPUT_INTERFACE *conout; 820 EFI_STATUS status; 821 UINTN i, max_dim, best_mode, cols, rows; 822 823 conout = ST->ConOut; 824 max_dim = best_mode = 0; 825 for (i = 0; i < conout->Mode->MaxMode; i++) { 826 status = conout->QueryMode(conout, i, &cols, &rows); 827 if (EFI_ERROR(status)) 828 continue; 829 if (cols * rows > max_dim) { 830 max_dim = cols * rows; 831 best_mode = i; 832 } 833 } 834 if (max_dim > 0) 835 conout->SetMode(conout, best_mode); 836 (void) cons_update_mode(true); 837 return (CMD_OK); 838 } 839 840 static int 841 uga_autoresize(void) 842 { 843 844 return (text_autoresize()); 845 } 846 847 COMMAND_SET(efi_autoresize, "efi-autoresizecons", "EFI Auto-resize Console", command_autoresize); 848 849 static int 850 command_autoresize(int argc, char *argv[]) 851 { 852 char *textmode; 853 854 textmode = getenv("hw.vga.textmode"); 855 /* If it's set and non-zero, we'll select a console mode instead */ 856 if (textmode != NULL && strcmp(textmode, "0") != 0) 857 return (text_autoresize()); 858 859 if (gop != NULL) 860 return (gop_autoresize()); 861 862 if (uga != NULL) 863 return (uga_autoresize()); 864 865 snprintf(command_errbuf, sizeof(command_errbuf), 866 "%s: Neither Graphics Output Protocol nor Universal Graphics Adapter present", 867 argv[0]); 868 869 /* 870 * Default to text_autoresize if we have neither GOP or UGA. This won't 871 * give us the most ideal resolution, but it will at least leave us 872 * functional rather than failing the boot for an objectively bad 873 * reason. 874 */ 875 return (text_autoresize()); 876 } 877 878 COMMAND_SET(gop, "gop", "graphics output protocol", command_gop); 879 880 static int 881 command_gop(int argc, char *argv[]) 882 { 883 struct efi_fb efifb; 884 EFI_STATUS status; 885 u_int mode; 886 extern bool ignore_gop_blt; 887 888 if (gop == NULL) { 889 snprintf(command_errbuf, sizeof(command_errbuf), 890 "%s: Graphics Output Protocol not present", argv[0]); 891 return (CMD_ERROR); 892 } 893 894 if (argc < 2) 895 goto usage; 896 897 if (strcmp(argv[1], "set") == 0) { 898 char *cp; 899 900 if (argc != 3) 901 goto usage; 902 mode = strtol(argv[2], &cp, 0); 903 if (cp[0] != '\0') { 904 sprintf(command_errbuf, "mode is an integer"); 905 return (CMD_ERROR); 906 } 907 status = gop->SetMode(gop, mode); 908 if (EFI_ERROR(status)) { 909 snprintf(command_errbuf, sizeof(command_errbuf), 910 "%s: Unable to set mode to %u (error=%lu)", 911 argv[0], mode, DECODE_ERROR(status)); 912 return (CMD_ERROR); 913 } 914 (void) cons_update_mode(true); 915 } else if (strcmp(argv[1], "blt") == 0) { 916 /* 917 * "blt on" does allow gop->Blt() to be used (default). 918 * "blt off" does block gop->Blt() to be used and use 919 * software rendering instead. 920 */ 921 if (argc != 3) 922 goto usage; 923 if (strcmp(argv[2], "on") == 0) 924 ignore_gop_blt = false; 925 else if (strcmp(argv[2], "off") == 0) 926 ignore_gop_blt = true; 927 else 928 goto usage; 929 } else if (strcmp(argv[1], "off") == 0) { 930 /* 931 * Tell console to use SimpleTextOutput protocol. 932 * This means that we do not render the glyphs, but rely on 933 * UEFI firmware to draw on ConsOut device(s). 934 */ 935 (void) cons_update_mode(false); 936 } else if (strcmp(argv[1], "get") == 0) { 937 edid_res_list_t res; 938 939 if (argc != 2) 940 goto usage; 941 TAILQ_INIT(&res); 942 efifb_from_gop(&efifb, gop->Mode, gop->Mode->Info); 943 if (efifb_get_edid(&res)) { 944 struct resolution *rp; 945 946 printf("EDID"); 947 while ((rp = TAILQ_FIRST(&res)) != NULL) { 948 printf(" %dx%d", rp->width, rp->height); 949 TAILQ_REMOVE(&res, rp, next); 950 free(rp); 951 } 952 printf("\n"); 953 } else { 954 printf("no EDID information\n"); 955 } 956 print_efifb(gop->Mode->Mode, &efifb, 1); 957 printf("\n"); 958 } else if (strcmp(argv[1], "list") == 0) { 959 EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *info; 960 UINTN infosz; 961 962 if (argc != 2) 963 goto usage; 964 965 pager_open(); 966 for (mode = 0; mode < gop->Mode->MaxMode; mode++) { 967 status = gop->QueryMode(gop, mode, &infosz, &info); 968 if (EFI_ERROR(status)) 969 continue; 970 efifb_from_gop(&efifb, gop->Mode, info); 971 print_efifb(mode, &efifb, 0); 972 if (pager_output("\n")) 973 break; 974 } 975 pager_close(); 976 } 977 return (CMD_OK); 978 979 usage: 980 snprintf(command_errbuf, sizeof(command_errbuf), 981 "usage: %s [list | get | set <mode> | off | blt <on|off>]", argv[0]); 982 return (CMD_ERROR); 983 } 984 985 COMMAND_SET(uga, "uga", "universal graphics adapter", command_uga); 986 987 static int 988 command_uga(int argc, char *argv[]) 989 { 990 struct efi_fb efifb; 991 992 if (uga == NULL) { 993 snprintf(command_errbuf, sizeof(command_errbuf), 994 "%s: UGA Protocol not present", argv[0]); 995 return (CMD_ERROR); 996 } 997 998 if (argc != 1) 999 goto usage; 1000 1001 if (efifb_from_uga(&efifb) != CMD_OK) { 1002 snprintf(command_errbuf, sizeof(command_errbuf), 1003 "%s: Unable to get UGA information", argv[0]); 1004 return (CMD_ERROR); 1005 } 1006 1007 print_efifb(-1, &efifb, 1); 1008 printf("\n"); 1009 return (CMD_OK); 1010 1011 usage: 1012 snprintf(command_errbuf, sizeof(command_errbuf), "usage: %s", argv[0]); 1013 return (CMD_ERROR); 1014 } 1015