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   1 /*
   2  *  Copyright (C) 2001-2003 Hewlett-Packard Co.
   3  *      Contributed by Stephane Eranian <eranian@hpl.hp.com>
   4  *      Contributed by Mike Johnston <johnston@intel.com>
   5  *      Contributed by Chris Ahna <christopher.j.ahna@intel.com>
   6  *
   7  * This file is part of the ELILO, the EFI Linux boot loader.
   8  *
   9  *  ELILO is free software; you can redistribute it and/or modify
  10  *  it under the terms of the GNU General Public License as published by
  11  *  the Free Software Foundation; either version 2, or (at your option)
  12  *  any later version.
  13  *
  14  *  ELILO is distributed in the hope that it will be useful,
  15  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *  GNU General Public License for more details.
  18  *
  19  *  You should have received a copy of the GNU General Public License
  20  *  along with ELILO; see the file COPYING.  If not, write to the Free
  21  *  Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  22  *  02111-1307, USA.
  23  *
  24  * Please check out the elilo.txt for complete documentation on how
  25  * to use this program.
  26  */
  27
  28 /*
  29  * This file contains all the IA-32 specific code expected by generic loader
  30  */
  31 #include <efi.h>
  32 #include <efilib.h>
  33
  34 #include "elilo.h"
  35 #include "loader.h"
  36 #include "rmswitch.h"
  37
  38 extern loader_ops_t bzimage_loader, plain_loader, gzip_loader;
  39
  40 /*
  41  * Descriptor table base addresses & limits for Linux startup.
  42  */
  43
  44 dt_addr_t gdt_addr = { 0x800, 0x94000 };
  45 dt_addr_t idt_addr = { 0, 0 };
  46
  47 /*
  48  * Initial GDT layout for Linux startup.
  49  */
  50
  51 UINT16 init_gdt[] = {
  52         /* gdt[0]: dummy */
  53         0, 0, 0, 0,
  54
  55         /* gdt[1]: unused */
  56         0, 0, 0, 0,
  57
  58         /* gdt[2]: code */
  59         0xFFFF,         /* 4Gb - (0x100000*0x1000 = 4Gb) */
  60         0x0000,         /* base address=0 */
  61         0x9A00,         /* code read/exec */
  62         0x00CF,         /* granularity=4096, 386 (+5th nibble of limit) */
  63
  64         /* gdt[3]: data */
  65         0xFFFF,         /* 4Gb - (0x100000*0x1000 = 4Gb) */
  66         0x0000,         /* base address=0 */
  67         0x9200,         /* data read/write */
  68         0x00CF,         /* granularity=4096, 386 (+5th nibble of limit) */
  69 };
  70
  71 UINTN sizeof_init_gdt = sizeof init_gdt;
  72
  73 /*
  74  * Highest available base memory address.
  75  *
  76  * For traditional kernels and loaders this is always at 0x90000.
  77  * For updated kernels and loaders this is computed by taking the
  78  * highest available base memory address and rounding down to the
  79  * nearest 64 kB boundary and then subtracting 64 kB.
  80  *
  81  * A non-compressed kernel is automatically assumed to be an updated
  82  * kernel.  A compressed kernel that has bit 6 (0x40) set in the
  83  * loader_flags field is also assumed to be an updated kernel.
  84  */
  85
  86 UINTN high_base_mem = 0x90000;
  87
  88 /*
  89  * Highest available extended memory address.
  90  *
  91  * This is computed by taking the highest available extended memory
  92  * address and rounding down to the nearest EFI_PAGE_SIZE (usually
  93  * 4 kB) boundary.
  94  * This is only used for backward compatibility.
  95  */
  96
  97 UINTN high_ext_mem = 32 * 1024 * 1024;
  98
  99 /* This starting address will hold true for all of the loader types for now */
 100 VOID *kernel_start = (VOID *)DEFAULT_KERNEL_START;
 101
 102 /* The kernel may load elsewhere if EFI firmware reserves kernel_start */
 103 VOID *kernel_load_address = (VOID *)DEFAULT_KERNEL_START;
 104
 105 VOID *initrd_start = NULL;
 106 UINTN initrd_size = 0;
 107
 108 INTN
 109 sysdeps_init(EFI_HANDLE dev)
 110 {
 111         DBG_PRT((L"sysdeps_init()\n"));
 112
 113         /*
 114          * Register our loader(s)...
 115          */
 116
 117         loader_register(&bzimage_loader);
 118         loader_register(&plain_loader);
 119         loader_register(&gzip_loader);
 120         return 0;
 121 }
 122
 123 /*
 124  * initrd_get_addr()
 125  *      Compute a starting address for the initial RAMdisk image.
 126  *      For now, this image is placed immediately after the end of
 127  *      the kernel memory.  Inside the start_kernel() code, the
 128  *      RAMdisk image will be relocated to the top of available
 129  *      extended memory.
 130  */
 131 INTN
 132 sysdeps_initrd_get_addr(kdesc_t *kd, memdesc_t *imem)
 133 {
 134         DBG_PRT((L"initrd_get_addr()\n"));
 135
 136         if (!kd || !imem) {
 137                 ERR_PRT((L"kd=" PTR_FMT " imem=" PTR_FMT, kd, imem));
 138                 return -1;
 139         }
 140
 141         VERB_PRT(3, Print(L"kstart=" PTR_FMT "  kentry=" PTR_FMT "  kend=" PTR_FMT "\n",
 142                 kd->kstart, kd->kentry, kd->kend));
 143
 144         imem->start_addr = kd->kend;
 145
 146         VERB_PRT(3, Print(L"initrd start_addr=" PTR_FMT " pgcnt=%d\n",
 147                 imem->start_addr, imem->pgcnt));
 148
 149         return 0;
 150 }
 151
 152 VOID
 153 sysdeps_free_boot_params(boot_params_t *bp)
 154 {
 155         mmap_desc_t md;
 156
 157         ZeroMem(&md, sizeof md);
 158         md.md = (VOID *)bp->s.efi_mem_map;
 159         free_memmap(&md);
 160 }
 161
 162 static VOID find_bits(unsigned long mask, UINT8 *first, UINT8* len) {
 163         unsigned char bit_pos = 0, bit_len = 0;
 164         *first =0;
 165         *len = 0;
 166         if (mask == 0)
 167                 return;
 168         while (!(mask & 0x1)) {
 169                 mask = mask >> 1;
 170                 bit_pos++;
 171         }
 172         while (mask & 0x1) {
 173                 mask = mask >> 1;
 174                 bit_len++;
 175         }
 176         *first = bit_pos;
 177         *len = bit_len;
 178 }
 179
 180 /*
 181  * Get video information.
 182  */
 183 static INTN get_video_info(boot_params_t * bp) {
 184         EFI_GUID GopProtocol = EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID;
 185         EFI_GRAPHICS_OUTPUT_PROTOCOL *Gop_interface;
 186         EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *Gop_info;
 187         EFI_GRAPHICS_OUTPUT_PROTOCOL_MODE   *Gop_mode = NULL;
 188         EFI_HANDLE *Gop_handle = NULL;
 189         EFI_STATUS efi_status;
 190         UINTN size = 0;
 191         UINTN size1;
 192         UINT8 i;
 193
 194         efi_status = uefi_call_wrapper(
 195                         BS->LocateHandle,
 196                         5,
 197                         ByProtocol,
 198                         &GopProtocol,
 199                         NULL,
 200                         &size,
 201                         (VOID **)Gop_handle);
 202
 203         if (EFI_ERROR(efi_status) && efi_status != EFI_BUFFER_TOO_SMALL) {
 204                 ERR_PRT((L"LocateHandle GopProtocol failed."));
 205                 return -1;
 206         }
 207         Gop_handle = alloc(size, 0);
 208         efi_status = uefi_call_wrapper(
 209                         BS->LocateHandle,
 210                         5,
 211                         ByProtocol,
 212                         &GopProtocol,
 213                         NULL,
 214                         &size,
 215                         (VOID **)Gop_handle);
 216         if (EFI_ERROR(efi_status)) {
 217                 ERR_PRT((L"LocateHandle GopProtocol failed."));
 218                 free(Gop_handle);
 219                 return -1;
 220         }
 221
 222         for (i=0; i < size/sizeof(EFI_HANDLE); i++) {
 223                 Gop_handle += i;
 224                 efi_status = uefi_call_wrapper(
 225                                 BS->HandleProtocol,
 226                                 3,
 227                                 *Gop_handle,
 228                                 &GopProtocol,
 229                                 (VOID **) &Gop_interface);
 230
 231                 if (EFI_ERROR(efi_status)) {
 232                         continue;
 233                 }
 234                 Gop_mode = Gop_interface->Mode;
 235                 efi_status = uefi_call_wrapper(
 236                                 Gop_interface->QueryMode,
 237                                 4,
 238                                 Gop_interface,
 239                                 Gop_mode->Mode,
 240                                 &size1,
 241                                 &Gop_info);
 242                 if (!EFI_ERROR(efi_status))
 243                         break;
 244                 if (EFI_ERROR(efi_status)) {
 245                         continue;
 246                 }
 247         }
 248         if (EFI_ERROR(efi_status) || i > (size/sizeof(EFI_HANDLE))) {
 249                 ERR_PRT((L"HandleProtocol GopProtocol failed."));
 250                 free(Gop_handle);
 251                 return -1;
 252         }
 253
 254         bp->s.is_vga = 0x70;
 255         bp->s.orig_cursor_col = 0;
 256         bp->s.orig_cursor_row = 0;
 257         bp->s.orig_video_page = 0;
 258         bp->s.orig_video_mode = 0;
 259         bp->s.orig_video_cols = 0;
 260         bp->s.orig_video_rows = 0;
 261         bp->s.orig_ega_bx = 0;
 262         bp->s.orig_video_points = 0;
 263
 264         bp->s.lfb_width = Gop_info->HorizontalResolution;
 265         bp->s.lfb_height = Gop_info->VerticalResolution;
 266         bp->s.lfb_base = Gop_mode->FrameBufferBase;
 267         bp->s.lfb_size = Gop_mode->FrameBufferSize;
 268         bp->s.lfb_pages = 1;
 269         bp->s.vesa_seg = 0;
 270         bp->s.vesa_off = 0;
 271         if (Gop_info->PixelFormat == PixelRedGreenBlueReserved8BitPerColor) {
 272                 bp->s.lfb_depth = 32;
 273                 bp->s.lfb_red_size = 8;
 274                 bp->s.lfb_red_pos = 0;
 275                 bp->s.lfb_green_size = 8;
 276                 bp->s.lfb_green_pos = 8;
 277                 bp->s.lfb_blue_size = 8;
 278                 bp->s.lfb_blue_pos = 16;
 279                 bp->s.lfb_rsvd_size = 8;
 280                 bp->s.lfb_rsvd_pos = 24;
 281                 bp->s.lfb_line_len = Gop_info->PixelsPerScanLine * 4;
 282
 283         } else if (Gop_info->PixelFormat == PixelBlueGreenRedReserved8BitPerColor) {
 284                 bp->s.lfb_depth = 32;
 285                 bp->s.lfb_red_size = 8;
 286                 bp->s.lfb_red_pos = 16;
 287                 bp->s.lfb_green_size = 8;
 288                 bp->s.lfb_green_pos = 8;
 289                 bp->s.lfb_blue_size = 8;
 290                 bp->s.lfb_blue_pos = 0;
 291                 bp->s.lfb_rsvd_size = 8;
 292                 bp->s.lfb_rsvd_pos = 24;
 293                 bp->s.lfb_line_len = Gop_info->PixelsPerScanLine * 4;
 294         } else if (Gop_info->PixelFormat == PixelBitMask) {
 295                 find_bits(Gop_info->PixelInformation.RedMask,
 296                           &bp->s.lfb_red_pos, &bp->s.lfb_red_size);
 297                 find_bits(Gop_info->PixelInformation.GreenMask,
 298                           &bp->s.lfb_green_pos, &bp->s.lfb_green_size);
 299                 find_bits(Gop_info->PixelInformation.BlueMask,
 300                           &bp->s.lfb_blue_pos, &bp->s.lfb_blue_size);
 301                 find_bits(Gop_info->PixelInformation.ReservedMask,
 302                           &bp->s.lfb_rsvd_pos, &bp->s.lfb_rsvd_size);
 303                 bp->s.lfb_depth = bp->s.lfb_red_size + bp->s.lfb_green_size +
 304                                   bp->s.lfb_blue_size + bp->s.lfb_rsvd_size;
 305                 bp->s.lfb_line_len = (Gop_info->PixelsPerScanLine * bp->s.lfb_depth) / 8;
 306         } else {
 307                 bp->s.lfb_depth = 4;
 308                 bp->s.lfb_red_size = 0;
 309                 bp->s.lfb_red_pos = 0;
 310                 bp->s.lfb_green_size = 0;
 311                 bp->s.lfb_green_pos = 0;
 312                 bp->s.lfb_blue_size = 0;
 313                 bp->s.lfb_blue_pos = 0;
 314                 bp->s.lfb_rsvd_size = 0;
 315                 bp->s.lfb_rsvd_pos = 0;
 316                 bp->s.lfb_line_len = bp->s.lfb_width / 2;
 317         }
 318         return 0;
 319 }
 320
 321 /* Convert EFI memory map to E820 map for the operating system
 322  * This code is based on a Linux kernel patch submitted by Edgar Hucek
 323  */
 324
 325 /* Add a memory region to the e820 map */
 326 static void add_memory_region (struct e820entry *e820_map,
 327                                int *e820_nr_map,
 328                                UINT64 start,
 329                                UINT64 size,
 330                                UINT32 type)
 331 {
 332         int x = *e820_nr_map;
 333
 334         if (x == E820_MAX) {
 335                 Print(L"Too many entries in the memory map!\n");
 336                 return;
 337         }
 338
 339         if ((x > 0) && e820_map[x-1].addr + e820_map[x-1].size == start
 340             && e820_map[x-1].type == type)
 341                 e820_map[x-1].size += size;
 342         else {
 343                 e820_map[x].addr = start;
 344                 e820_map[x].size = size;
 345                 e820_map[x].type = type;
 346                 (*e820_nr_map)++;
 347         }
 348 }
 349
 350 void fill_e820map(boot_params_t *bp, mmap_desc_t *mdesc)
 351 {
 352         int nr_map, e820_nr_map = 0, i;
 353         UINT64 start, end, size;
 354         EFI_MEMORY_DESCRIPTOR   *md, *p;
 355         struct e820entry *e820_map;
 356
 357         nr_map = mdesc->map_size/mdesc->desc_size;
 358         e820_map = (struct e820entry *)bp->s.e820_map;
 359
 360         for (i = 0, p = mdesc->md; i < nr_map; i++)
 361         {
 362                 md = p;
 363                 switch (md->Type) {
 364                 case EfiACPIReclaimMemory:
 365                         add_memory_region(e820_map, &e820_nr_map,
 366                                           md->PhysicalStart,
 367                                           md->NumberOfPages << EFI_PAGE_SHIFT,
 368                                           E820_ACPI);
 369                         break;
 370                 case EfiRuntimeServicesCode:
 371                 case EfiRuntimeServicesData:
 372                 case EfiReservedMemoryType:
 373                 case EfiMemoryMappedIO:
 374                 case EfiMemoryMappedIOPortSpace:
 375                 case EfiUnusableMemory:
 376                 case EfiPalCode:
 377                         add_memory_region(e820_map, &e820_nr_map,
 378                                           md->PhysicalStart,
 379                                           md->NumberOfPages << EFI_PAGE_SHIFT,
 380                                           E820_RESERVED);
 381                         break;
 382                 case EfiLoaderCode:
 383                 case EfiLoaderData:
 384                 case EfiBootServicesCode:
 385                 case EfiBootServicesData:
 386                 case EfiConventionalMemory:
 387                         start = md->PhysicalStart;
 388                         size = md->NumberOfPages << EFI_PAGE_SHIFT;
 389                         end = start + size;
 390                         /* Fix up for BIOS that claims RAM in 640K-1MB region */
 391                         if (start < 0x100000ULL && end > 0xA0000ULL) {
 392                                 if (start < 0xA0000ULL) {
 393                                         /* start < 640K
 394                                          * set memory map from start to 640K
 395                                          */
 396                                         add_memory_region(e820_map,
 397                                                           &e820_nr_map,
 398                                                           start,
 399                                                           0xA0000ULL-start,
 400                                                           E820_RAM);
 401                                 }
 402                                 if (end <= 0x100000ULL)
 403                                         continue;
 404                                 /* end > 1MB
 405                                  * set memory map avoiding 640K to 1MB hole
 406                                  */
 407                                 start = 0x100000ULL;
 408                                 size = end - start;
 409                         }
 410                         add_memory_region(e820_map, &e820_nr_map,
 411                                           start, size, E820_RAM);
 412                         break;
 413                 case EfiACPIMemoryNVS:
 414                         add_memory_region(e820_map, &e820_nr_map,
 415                                           md->PhysicalStart,
 416                                           md->NumberOfPages << EFI_PAGE_SHIFT,
 417                                           E820_NVS);
 418                         break;
 419                 default:
 420                         /* We should not hit this case */
 421                         add_memory_region(e820_map, &e820_nr_map,
 422                                           md->PhysicalStart,
 423                                           md->NumberOfPages << EFI_PAGE_SHIFT,
 424                                           E820_RESERVED);
 425                         break;
 426                 }
 427                 p = NextMemoryDescriptor(p, mdesc->desc_size);
 428         }
 429         bp->s.e820_nrmap = e820_nr_map;
 430 }
 431
 432 /*
 433  * IA-32 specific boot parameters initialization routine
 434  */
 435 INTN
 436 sysdeps_create_boot_params(
 437         boot_params_t *bp,
 438         CHAR8 *cmdline,
 439         memdesc_t *initrd,
 440         memdesc_t *vmcode, /* no use for ia32 now*/
 441         UINTN *cookie)
 442 {
 443         mmap_desc_t mdesc;
 444         EFI_STATUS efi_status;
 445         UINTN rows, cols;
 446         UINT8 row, col;
 447         UINT8 mode;
 448         UINT16 hdr_version;
 449
 450         DBG_PRT((L"fill_boot_params()\n"));
 451
 452         if (!bp || !cmdline || !initrd || !cookie) {
 453                 ERR_PRT((L"bp=" PTR_FMT "  cmdline=" PTR_FMT "  initrd=" PTR_FMT " cookie=" PTR_FMT,
 454                         bp, cmdline, initrd, cookie));
 455
 456                 if (param_start != NULL) {
 457                         free(param_start);
 458                         param_start = NULL;
 459                         param_size = 0;
 460                 }
 461                 free_kmem();
 462                 return -1;
 463         }
 464
 465         /*
 466          * Copy temporary boot sector and setup data storage to
 467          * elilo allocated boot parameter storage.  We only need
 468          * the first two sectors (1K).  The rest of the storage
 469          * can be used by the command line.
 470          */
 471         if (param_start != NULL) {
 472                 CopyMem(bp, param_start, 0x2000);
 473                 free(param_start);
 474                 param_start = NULL;
 475                 param_size = 0;
 476         }
 477         /*
 478          * Save off our header revision information.
 479          */
 480         hdr_version = (bp->s.hdr_major << 8) | bp->s.hdr_minor;
 481
 482         /*
 483          * Clear out unused memory in boot sector image.
 484          */
 485         bp->s.unused_1 = 0;
 486         bp->s.unused_2 = 0;
 487         ZeroMem(bp->s.unused_3, sizeof bp->s.unused_3);
 488         ZeroMem(bp->s.unused_4, sizeof bp->s.unused_4);
 489         ZeroMem(&bp->s.unused_51, sizeof bp->s.unused_51);
 490         ZeroMem(bp->s.unused_52, sizeof bp->s.unused_52);
 491         bp->s.unused_6 = 0;
 492         bp->s.unused_7 = 0;
 493         ZeroMem(bp->s.unused_8, sizeof bp->s.unused_8);
 494
 495         /*
 496          * Tell kernel this was loaded by an advanced loader type.
 497          * If this field is zero, the initrd_start and initrd_size
 498          * fields are ignored by the kernel.
 499          */
 500
 501         bp->s.loader_type = LDRTYPE_ELILO;
 502
 503         /*
 504          * Setup command line information.
 505          */
 506
 507         bp->s.cmdline_magik = CMDLINE_MAGIK;
 508         bp->s.cmdline_offset = (UINT8 *)cmdline - (UINT8 *)bp;
 509
 510         /*
 511          * Clear out the cmdline_addr field so the kernel can find
 512          * the cmdline.
 513          */
 514         bp->s.cmdline_addr = 0x0;
 515
 516         /*
 517          * Setup hard drive parameters.
 518          * %%TBD - It should be okay to zero fill the hard drive
 519          * info buffers.  The kernel should do its own detection.
 520          */
 521
 522         ZeroMem(bp->s.hd0_info, sizeof bp->s.hd0_info);
 523         ZeroMem(bp->s.hd1_info, sizeof bp->s.hd1_info);
 524
 525         /*
 526          * Memory info.
 527          */
 528
 529         bp->s.alt_mem_k = high_ext_mem / 1024;
 530
 531         if (bp->s.alt_mem_k <= 65535)
 532                 bp->s.ext_mem_k = (UINT16)bp->s.alt_mem_k;
 533         else
 534                 bp->s.ext_mem_k = 65535;
 535
 536         /*
 537          * Initial RAMdisk and root device stuff.
 538          */
 539
 540         DBG_PRT((L"initrd->start_addr=" PTR_FMT "  initrd->pgcnt=%d\n",
 541                 initrd->start_addr, initrd->pgcnt));
 542
 543         /* These RAMdisk flags are not needed, just zero them. */
 544         bp->s.ramdisk_flags = 0;
 545
 546         if (initrd->start_addr && initrd->pgcnt) {
 547                 /* %%TBD - This will probably have to be changed. */
 548                 bp->s.initrd_start = (UINT32)initrd->start_addr;
 549                 bp->s.initrd_size = (UINT32)(initrd->size);
 550
 551                 /*
 552                  * This is the RAMdisk root device for RedHat 2.2.x
 553                  * kernels (major 0x01, minor 0x00).
 554                  */
 555
 556                 bp->s.orig_root_dev = 0x0100;
 557         } else {
 558                 bp->s.initrd_start = 0;
 559                 bp->s.initrd_size = 0;
 560         }
 561
 562         /*
 563          * APM BIOS info.
 564          */
 565         bp->s.apm_bios_ver = NO_APM_BIOS;
 566         bp->s.bios_code_seg = 0;
 567         bp->s.bios_entry_point = 0;
 568         bp->s.bios_code_seg16 = 0;
 569         bp->s.bios_data_seg = 0;
 570         bp->s.apm_bios_flags = 0;
 571         bp->s.bios_code_len = 0;
 572         bp->s.bios_data_len = 0;
 573
 574         /*
 575          * MCA BIOS info (misnomer).
 576          */
 577         bp->s.mca_info_len = 0;
 578         ZeroMem(bp->s.mca_info_buf, sizeof bp->s.mca_info_buf);
 579
 580         /*
 581          * Pointing device presence.  The kernel will detect this.
 582          */
 583         bp->s.aux_dev_info = NO_MOUSE;
 584
 585         /*
 586          * EFI loader signature
 587          */
 588         CopyMem(bp->s.efi_loader_sig, EFI_LOADER_SIG_IA32, 4);
 589
 590         /*
 591          * Kernel entry point.
 592          */
 593         bp->s.kernel_start = (UINT32)kernel_start;
 594
 595         /*
 596          * When changing stuff in the parameter structure compare
 597          * the offsets of the fields with the offsets used in the
 598          * boot sector and setup source files.
 599          *   arch/i386/boot/bootsect.S
 600          *   arch/i386/boot/setup.S
 601          *   arch/i386/kernel/setup.c
 602          *   include/asm-i386/setup.h (2.5/2.6)
 603          */
 604
 605 #define CHECK_OFFSET(n, o, f) \
 606 { \
 607         UINTN p = (UINT8 *)&bp->s.n - (UINT8 *)bp; \
 608         UINTN q = (UINTN)(o); \
 609         if (p != q) { \
 610                 test |= 1; \
 611                 Print(L"%20a:  %3xh  %3xh  ", #n, p, q); \
 612                 if (*f) { \
 613                         Print(f, bp->s.n); \
 614                 } \
 615                 Print(L"\n"); \
 616         } \
 617 }
 618
 619 #define WAIT_FOR_KEY() \
 620 { \
 621         EFI_INPUT_KEY key; \
 622         while (uefi_call_wrapper(ST->ConIn->ReadKeyStroke, 2, ST->ConIn, &key) != EFI_SUCCESS) { \
 623                 ; \
 624         } \
 625 }
 626         {
 627                 UINTN test = 0;
 628
 629                 CHECK_OFFSET(orig_cursor_col, 0x00, L"%xh");
 630                 CHECK_OFFSET(orig_cursor_row, 0x01, L"%xh");
 631                 CHECK_OFFSET(ext_mem_k, 0x02, L"%xh");
 632                 CHECK_OFFSET(orig_video_page, 0x04, L"%xh");
 633                 CHECK_OFFSET(orig_video_mode, 0x06, L"%xh");
 634                 CHECK_OFFSET(orig_video_cols, 0x07, L"%xh");
 635                 CHECK_OFFSET(orig_ega_bx, 0x0A, L"%xh");
 636                 CHECK_OFFSET(orig_video_rows, 0x0E, L"%xh");
 637                 CHECK_OFFSET(is_vga, 0x0F, L"%xh");
 638                 CHECK_OFFSET(orig_video_points, 0x10, L"%xh");
 639                 CHECK_OFFSET(lfb_width, 0x12, L"%xh");
 640                 CHECK_OFFSET(lfb_height, 0x14, L"%xh");
 641                 CHECK_OFFSET(lfb_depth, 0x16, L"%xh");
 642                 CHECK_OFFSET(lfb_base, 0x18, L"%xh");
 643                 CHECK_OFFSET(lfb_size, 0x1C, L"%xh");
 644                 CHECK_OFFSET(cmdline_magik, 0x20, L"%xh");
 645                 CHECK_OFFSET(cmdline_offset, 0x22, L"%xh");
 646                 CHECK_OFFSET(lfb_line_len, 0x24, L"%xh");
 647                 CHECK_OFFSET(lfb_red_size, 0x26, L"%xh");
 648                 CHECK_OFFSET(lfb_red_pos, 0x27, L"%xh");
 649                 CHECK_OFFSET(lfb_green_size, 0x28, L"%xh");
 650                 CHECK_OFFSET(lfb_green_pos, 0x29, L"%xh");
 651                 CHECK_OFFSET(lfb_blue_size, 0x2A, L"%xh");
 652                 CHECK_OFFSET(lfb_blue_pos, 0x2B, L"%xh");
 653                 CHECK_OFFSET(lfb_rsvd_size, 0x2C, L"%xh");
 654                 CHECK_OFFSET(lfb_rsvd_pos, 0x2D, L"%xh");
 655                 CHECK_OFFSET(vesa_seg, 0x2E, L"%xh");
 656                 CHECK_OFFSET(vesa_off, 0x30, L"%xh");
 657                 CHECK_OFFSET(lfb_pages, 0x32, L"%xh");
 658                 CHECK_OFFSET(lfb_reserved, 0x34, L"");
 659                 CHECK_OFFSET(apm_bios_ver, 0x40, L"%xh");
 660                 CHECK_OFFSET(bios_code_seg, 0x42, L"%xh");
 661                 CHECK_OFFSET(bios_entry_point, 0x44, L"%xh");
 662                 CHECK_OFFSET(bios_code_seg16, 0x48, L"%xh");
 663                 CHECK_OFFSET(bios_data_seg, 0x4A, L"%xh");
 664                 CHECK_OFFSET(apm_bios_flags, 0x4C, L"%xh");
 665                 CHECK_OFFSET(bios_code_len, 0x4E, L"%xh");
 666                 CHECK_OFFSET(bios_data_len, 0x52, L"%xh");
 667                 CHECK_OFFSET(hd0_info, 0x80, L"");
 668                 CHECK_OFFSET(hd1_info, 0x90, L"");
 669                 CHECK_OFFSET(mca_info_len, 0xA0, L"%xh");
 670                 CHECK_OFFSET(mca_info_buf, 0xA2, L"");
 671                 CHECK_OFFSET(efi_loader_sig, 0x1C0, L"'%-4.4a'");
 672                 CHECK_OFFSET(efi_sys_tbl, 0x1C4, L"%xh");
 673                 CHECK_OFFSET(efi_mem_desc_size, 0x1C8, L"%xh");
 674                 CHECK_OFFSET(efi_mem_desc_ver, 0x1CC, L"%xh");
 675                 CHECK_OFFSET(efi_mem_map, 0x1D0, L"%xh");
 676                 CHECK_OFFSET(efi_mem_map_size, 0x1D4, L"%xh");
 677                 CHECK_OFFSET(loader_start, 0x1D8, L"%xh");
 678                 CHECK_OFFSET(loader_size, 0x1DC, L"%xh");
 679                 CHECK_OFFSET(alt_mem_k, 0x1E0, L"%xh");
 680                 CHECK_OFFSET(e820_nrmap, 0x1E8, L"%xh");
 681                 CHECK_OFFSET(setup_sectors, 0x1F1, L"%xh");
 682                 CHECK_OFFSET(mount_root_rdonly, 0x1F2, L"%xh");
 683                 CHECK_OFFSET(sys_size, 0x1F4, L"%xh");
 684                 CHECK_OFFSET(swap_dev, 0x1F6, L"%xh");
 685                 CHECK_OFFSET(ramdisk_flags, 0x1F8, L"%xh");
 686                 CHECK_OFFSET(video_mode_flag, 0x1FA, L"%xh");
 687                 CHECK_OFFSET(orig_root_dev, 0x1FC, L"%xh");
 688                 CHECK_OFFSET(aux_dev_info, 0x1FF, L"%xh");
 689                 CHECK_OFFSET(jump, 0x200, L"%xh");
 690                 CHECK_OFFSET(setup_sig, 0x202, L"'%-4.4a'");
 691                 CHECK_OFFSET(hdr_minor, 0x206, L"%xh");
 692                 CHECK_OFFSET(hdr_major, 0x207, L"%xh");
 693                 CHECK_OFFSET(rm_switch, 0x208, L"%xh");
 694                 CHECK_OFFSET(start_sys_seg, 0x20C, L"%xh");
 695                 CHECK_OFFSET(kernel_verstr_offset, 0x20E, L"%xh");
 696                 CHECK_OFFSET(loader_type, 0x210, L"%xh");
 697                 CHECK_OFFSET(loader_flags, 0x211, L"%xh");
 698                 CHECK_OFFSET(setup_move_size, 0x212, L"%xh");
 699                 CHECK_OFFSET(kernel_start, 0x214, L"%xh");
 700                 CHECK_OFFSET(initrd_start, 0x218, L"%xh");
 701                 CHECK_OFFSET(initrd_size, 0x21C, L"%xh");
 702                 CHECK_OFFSET(bootsect_helper, 0x220, L"%xh");
 703                 CHECK_OFFSET(heap_end_ptr, 0x224, L"%xh");
 704                 CHECK_OFFSET(cmdline_addr, 0x228, L"%xh");
 705                 CHECK_OFFSET(e820_map, 0x2D0, L"'%-2560.2560a'");
 706
 707                 if (test) {
 708                         ERR_PRT((L"Boot sector and/or setup parameter alignment error."));
 709                         free_kmem();
 710                         return -1;
 711                 }
 712         }
 713
 714         /*
 715          * Get video information.
 716          * Do this last so that any other cursor positioning done
 717          * in the fill routine gets accounted for.
 718          */
 719
 720         if (!get_video_info(bp)) goto do_memmap;
 721
 722         efi_status = uefi_call_wrapper(
 723                 ST->ConOut->QueryMode,
 724                 4,
 725                 ST->ConOut,
 726                 ST->ConOut->Mode->Mode,
 727                 &cols,
 728                 &rows);
 729
 730         if (EFI_ERROR(efi_status)) {
 731                 ERR_PRT((L"QueryMode failed.  Fake it."));
 732                 mode = 3;
 733                 rows = 25;
 734                 cols = 80;
 735                 row = 24;
 736                 col = 0;
 737         } else {
 738                 mode = (UINT8)ST->ConOut->Mode->Mode;
 739                 col = (UINT8)ST->ConOut->Mode->CursorColumn;
 740                 row = (UINT8)ST->ConOut->Mode->CursorRow;
 741         }
 742
 743         bp->s.orig_cursor_col = col;
 744         bp->s.orig_cursor_row = row;
 745         bp->s.orig_video_page = 0;
 746         bp->s.orig_video_mode = mode;
 747         bp->s.orig_video_cols = (UINT8)cols;
 748         bp->s.orig_video_rows = (UINT8)rows;
 749
 750         bp->s.orig_ega_bx = 0;
 751         bp->s.is_vga = 0;
 752         bp->s.orig_video_points = 16;
 753
 754         bp->s.lfb_width = 0;
 755         bp->s.lfb_height = 0;
 756         bp->s.lfb_depth = 0;
 757         bp->s.lfb_base = 0;
 758         bp->s.lfb_size = 0;
 759         bp->s.lfb_line_len = 0;
 760         bp->s.lfb_red_size = 0;
 761         bp->s.lfb_red_pos = 0;
 762         bp->s.lfb_green_size = 0;
 763         bp->s.lfb_green_pos = 0;
 764         bp->s.lfb_blue_size = 0;
 765         bp->s.lfb_blue_pos = 0;
 766         bp->s.lfb_rsvd_size = 0;
 767         bp->s.lfb_rsvd_pos = 0;
 768         bp->s.lfb_pages = 0;
 769         bp->s.vesa_seg = 0;
 770         bp->s.vesa_off = 0;
 771
 772 do_memmap:
 773         /*
 774          * Get memory map description and cookie for ExitBootServices()
 775          */
 776
 777         if (get_memmap(&mdesc)) {
 778                 ERR_PRT((L"Could not get memory map."));
 779                 free_kmem();
 780                 return -1;
 781         }
 782         *cookie = mdesc.cookie;
 783         bp->s.efi_mem_map = (UINTN)mdesc.md;
 784         bp->s.efi_mem_map_size = mdesc.map_size;
 785         bp->s.efi_mem_desc_size = mdesc.desc_size;
 786         bp->s.efi_mem_desc_ver = mdesc.desc_version;
 787         bp->s.efi_sys_tbl = (UINTN)systab;
 788         /* Now that we have EFI memory map, convert it to E820 map
 789          * and update the bootparam accordingly
 790          */
 791         fill_e820map(bp, &mdesc);
 792
 793         return 0;
 794 }