GRUB2/MOD_SRC/grub-2.04/grub-core/loader/arm64/linux.c

   1 /*
   2  *  GRUB  --  GRand Unified Bootloader
   3  *  Copyright (C) 2013  Free Software Foundation, Inc.
   4  *
   5  *  GRUB is free software: you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation, either version 3 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  GRUB is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #include <grub/charset.h>
  20 #include <grub/command.h>
  21 #include <grub/err.h>
  22 #include <grub/file.h>
  23 #include <grub/fdt.h>
  24 #include <grub/linux.h>
  25 #include <grub/loader.h>
  26 #include <grub/mm.h>
  27 #include <grub/types.h>
  28 #include <grub/cpu/linux.h>
  29 #include <grub/efi/efi.h>
  30 #include <grub/efi/fdtload.h>
  31 #include <grub/efi/memory.h>
  32 #include <grub/efi/pe32.h>
  33 #include <grub/i18n.h>
  34 #include <grub/lib/cmdline.h>
  35 #include <grub/verify.h>
  36 #include <grub/term.h>
  37 #include <grub/env.h>
  38
  39 GRUB_MOD_LICENSE ("GPLv3+");
  40
  41 static grub_dl_t my_mod;
  42 static int loaded;
  43
  44 static void *kernel_addr;
  45 static grub_uint64_t kernel_size;
  46
  47 static char *linux_args;
  48 static grub_uint32_t cmdline_size;
  49
  50 static grub_addr_t initrd_start;
  51 static grub_addr_t initrd_end;
  52
  53 #define LINUX_MAX_ARGC  1024
  54 static int ventoy_debug = 0;
  55 static int ventoy_initrd_called = 0;
  56 static int ventoy_linux_argc = 0;
  57 static char **ventoy_linux_args = NULL;
  58 static int ventoy_extra_initrd_num = 0;
  59 static char *ventoy_extra_initrd_list[256];
  60 static grub_err_t
  61 grub_cmd_initrd (grub_command_t cmd __attribute__ ((unused)),
  62                  int argc, char *argv[]);
  63
  64 grub_err_t
  65 grub_arch_efi_linux_check_image (struct linux_arch_kernel_header * lh)
  66 {
  67   if (lh->magic != GRUB_LINUX_ARMXX_MAGIC_SIGNATURE)
  68     return grub_error(GRUB_ERR_BAD_OS, "invalid magic number");
  69
  70   if ((lh->code0 & 0xffff) != GRUB_PE32_MAGIC)
  71     return grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET,
  72                        N_("plain image kernel not supported - rebuild with CONFIG_(U)EFI_STUB enabled"));
  73
  74   grub_dprintf ("linux", "UEFI stub kernel:\n");
  75   grub_dprintf ("linux", "PE/COFF header @ %08x\n", lh->hdr_offset);
  76
  77   return GRUB_ERR_NONE;
  78 }
  79
  80 static grub_err_t
  81 finalize_params_linux (void)
  82 {
  83   int node, retval;
  84
  85   void *fdt;
  86
  87   fdt = grub_fdt_load (GRUB_EFI_LINUX_FDT_EXTRA_SPACE);
  88
  89   if (!fdt)
  90     goto failure;
  91
  92   node = grub_fdt_find_subnode (fdt, 0, "chosen");
  93   if (node < 0)
  94     node = grub_fdt_add_subnode (fdt, 0, "chosen");
  95
  96   if (node < 1)
  97     goto failure;
  98
  99   /* Set initrd info */
 100   if (initrd_start && initrd_end > initrd_start)
 101     {
 102       grub_dprintf ("linux", "Initrd @ %p-%p\n",
 103                     (void *) initrd_start, (void *) initrd_end);
 104
 105       retval = grub_fdt_set_prop64 (fdt, node, "linux,initrd-start",
 106                                     initrd_start);
 107       if (retval)
 108         goto failure;
 109       retval = grub_fdt_set_prop64 (fdt, node, "linux,initrd-end",
 110                                     initrd_end);
 111       if (retval)
 112         goto failure;
 113     }
 114
 115   if (grub_fdt_install() != GRUB_ERR_NONE)
 116     goto failure;
 117
 118   return GRUB_ERR_NONE;
 119
 120 failure:
 121   grub_fdt_unload();
 122   return grub_error(GRUB_ERR_BAD_OS, "failed to install/update FDT");
 123 }
 124
 125 grub_err_t
 126 grub_arch_efi_linux_boot_image (grub_addr_t addr, grub_size_t size, char *args)
 127 {
 128   grub_efi_memory_mapped_device_path_t *mempath;
 129   grub_efi_handle_t image_handle;
 130   grub_efi_boot_services_t *b;
 131   grub_efi_status_t status;
 132   grub_efi_loaded_image_t *loaded_image;
 133   int len;
 134
 135   mempath = grub_malloc (2 * sizeof (grub_efi_memory_mapped_device_path_t));
 136   if (!mempath)
 137     return grub_errno;
 138
 139   mempath[0].header.type = GRUB_EFI_HARDWARE_DEVICE_PATH_TYPE;
 140   mempath[0].header.subtype = GRUB_EFI_MEMORY_MAPPED_DEVICE_PATH_SUBTYPE;
 141   mempath[0].header.length = grub_cpu_to_le16_compile_time (sizeof (*mempath));
 142   mempath[0].memory_type = GRUB_EFI_LOADER_DATA;
 143   mempath[0].start_address = addr;
 144   mempath[0].end_address = addr + size;
 145
 146   mempath[1].header.type = GRUB_EFI_END_DEVICE_PATH_TYPE;
 147   mempath[1].header.subtype = GRUB_EFI_END_ENTIRE_DEVICE_PATH_SUBTYPE;
 148   mempath[1].header.length = sizeof (grub_efi_device_path_t);
 149
 150   b = grub_efi_system_table->boot_services;
 151   status = b->load_image (0, grub_efi_image_handle,
 152                           (grub_efi_device_path_t *) mempath,
 153                           (void *) addr, size, &image_handle);
 154   if (status != GRUB_EFI_SUCCESS)
 155     return grub_error (GRUB_ERR_BAD_OS, "cannot load image");
 156
 157   grub_dprintf ("linux", "linux command line: '%s'\n", args);
 158
 159   /* Convert command line to UCS-2 */
 160   loaded_image = grub_efi_get_loaded_image (image_handle);
 161   loaded_image->load_options_size = len =
 162     (grub_strlen (args) + 1) * sizeof (grub_efi_char16_t);
 163   loaded_image->load_options =
 164     grub_efi_allocate_any_pages (GRUB_EFI_BYTES_TO_PAGES (loaded_image->load_options_size));
 165   if (!loaded_image->load_options)
 166     return grub_errno;
 167
 168   loaded_image->load_options_size =
 169     2 * grub_utf8_to_utf16 (loaded_image->load_options, len,
 170                             (grub_uint8_t *) args, len, NULL);
 171
 172   grub_dprintf ("linux", "starting image %p\n", image_handle);
 173   status = b->start_image (image_handle, 0, NULL);
 174
 175   /* When successful, not reached */
 176   b->unload_image (image_handle);
 177   grub_efi_free_pages ((grub_addr_t) loaded_image->load_options,
 178                        GRUB_EFI_BYTES_TO_PAGES (loaded_image->load_options_size));
 179
 180   return grub_errno;
 181 }
 182
 183
 184 static void ventoy_debug_pause(void)
 185 {
 186     char key;
 187
 188     if (0 == ventoy_debug)
 189     {
 190         return;
 191     }
 192
 193     grub_printf("press Enter to continue ......\n");
 194     while (1)
 195     {
 196         key = grub_getkey();
 197         if (key == '\n' || key == '\r')
 198         {
 199             break;
 200         }
 201     }
 202 }
 203
 204 static int ventoy_preboot(void)
 205 {
 206     int i;
 207     const char *file;
 208     char buf[128];
 209
 210     if (ventoy_debug)
 211     {
 212         grub_printf("ventoy_preboot %d %d\n", ventoy_linux_argc, ventoy_initrd_called);
 213         ventoy_debug_pause();
 214     }
 215
 216     if (ventoy_linux_argc == 0)
 217     {
 218         return 0;
 219     }
 220
 221     if (ventoy_initrd_called)
 222     {
 223         ventoy_initrd_called = 0;
 224         return 0;
 225     }
 226
 227     grub_snprintf(buf, sizeof(buf), "mem:%s:size:%s", grub_env_get("ventoy_cpio_addr"), grub_env_get("ventoy_cpio_size"));
 228
 229     ventoy_extra_initrd_list[ventoy_extra_initrd_num++] = grub_strdup(buf);
 230
 231     file = grub_env_get("vtoy_img_part_file");
 232     if (file)
 233     {
 234         ventoy_extra_initrd_list[ventoy_extra_initrd_num++] = grub_strdup(file);
 235     }
 236
 237     if (ventoy_debug)
 238     {
 239         grub_printf("========== initrd list ==========\n");
 240         for (i = 0; i < ventoy_extra_initrd_num; i++)
 241         {
 242             grub_printf("%s\n", ventoy_extra_initrd_list[i]);
 243         }
 244         grub_printf("=================================\n");
 245
 246         ventoy_debug_pause();
 247     }
 248
 249     grub_cmd_initrd(NULL, ventoy_extra_initrd_num, ventoy_extra_initrd_list);
 250
 251     return 0;
 252 }
 253
 254 static int ventoy_boot_opt_filter(char *opt)
 255 {
 256     if (grub_strcmp(opt, "noinitrd") == 0)
 257     {
 258         return 1;
 259     }
 260
 261     if (grub_strcmp(opt, "vga=current") == 0)
 262     {
 263         return 1;
 264     }
 265
 266     if (grub_strncmp(opt, "rdinit=", 7) == 0)
 267     {
 268         if (grub_strcmp(opt, "rdinit=/vtoy/vtoy") != 0)
 269         {
 270             opt[0] = 'v';
 271             opt[1] = 't';
 272         }
 273         return 0;
 274     }
 275
 276     if (grub_strncmp(opt, "init=", 5) == 0)
 277     {
 278         opt[0] = 'v';
 279         opt[1] = 't';
 280         return 0;
 281     }
 282
 283     if (ventoy_debug)
 284     {
 285         if (grub_strcmp(opt, "quiet") == 0)
 286         {
 287             return 1;
 288         }
 289
 290         if (grub_strncmp(opt, "loglevel=", 9) == 0)
 291         {
 292             return 1;
 293         }
 294
 295         if (grub_strcmp(opt, "splash") == 0)
 296         {
 297             return 1;
 298         }
 299     }
 300
 301     return 0;
 302 }
 303
 304 static int ventoy_bootopt_hook(int argc, char *argv[])
 305 {
 306     int i;
 307     int count = 0;
 308     const char *env;
 309     char c;
 310     char *newenv;
 311     char *last, *pos;
 312
 313     //grub_printf("ventoy_bootopt_hook: %d %d\n", argc, ventoy_linux_argc);
 314
 315     if (ventoy_linux_argc == 0)
 316     {
 317         return 0;
 318     }
 319
 320     /* the 1st parameter is BOOT_IMAGE=xxxx */
 321     if (argc > 0 && 0 == ventoy_boot_opt_filter(argv[0]))
 322     {
 323         ventoy_linux_args[count++] = grub_strdup(argv[0]);
 324     }
 325
 326     for (i = 0; i < ventoy_linux_argc; i++)
 327     {
 328         ventoy_linux_args[count] = ventoy_linux_args[i + (LINUX_MAX_ARGC / 2)];
 329         ventoy_linux_args[i + (LINUX_MAX_ARGC / 2)] = NULL;
 330
 331         if (ventoy_linux_args[count][0] == '@')
 332         {
 333             env = grub_env_get(ventoy_linux_args[count] + 1);
 334             if (env)
 335             {
 336                 grub_free(ventoy_linux_args[count]);
 337
 338                 newenv = grub_strdup(env);
 339                 last =  newenv;
 340
 341                 while (*last)
 342                 {
 343                     while (*last)
 344                     {
 345                         if (*last != ' ' && *last != '\t')
 346                         {
 347                             break;
 348                         }
 349                         last++;
 350                     }
 351
 352                     if (*last == 0)
 353                     {
 354                         break;
 355                     }
 356
 357                     for (pos = last; *pos; pos++)
 358                     {
 359                         if (*pos == ' ' || *pos == '\t')
 360                         {
 361                             c = *pos;
 362                             *pos = 0;
 363                             if (0 == ventoy_boot_opt_filter(last))
 364                             {
 365                                 ventoy_linux_args[count++] = grub_strdup(last);
 366                             }
 367                             *pos = c;
 368                             break;
 369                         }
 370                     }
 371
 372                     if (*pos == 0)
 373                     {
 374                         if (0 == ventoy_boot_opt_filter(last))
 375                         {
 376                             ventoy_linux_args[count++] = grub_strdup(last);
 377                         }
 378                         break;
 379                     }
 380
 381                     last = pos + 1;
 382                 }
 383             }
 384             else
 385             {
 386                 count++;
 387             }
 388         }
 389         else
 390         {
 391             count++;
 392         }
 393     }
 394
 395     /* We have processed the 1st parameter before, so start from 1 */
 396     for (i = 1; i < argc; i++)
 397     {
 398         if (ventoy_boot_opt_filter(argv[i]))
 399         {
 400             continue;
 401         }
 402
 403         ventoy_linux_args[count++] = grub_strdup(argv[i]);
 404     }
 405
 406     if (ventoy_debug)
 407     {
 408         ventoy_linux_args[count++] = grub_strdup("loglevel=7");
 409     }
 410
 411     ventoy_linux_argc = count;
 412
 413     if (ventoy_debug)
 414     {
 415         grub_printf("========== bootoption ==========\n");
 416         for (i = 0; i < count; i++)
 417         {
 418             grub_printf("%s ", ventoy_linux_args[i]);
 419         }
 420         grub_printf("\n================================\n");
 421     }
 422
 423     return 0;
 424 }
 425
 426 static grub_err_t
 427 grub_cmd_set_boot_opt (grub_command_t cmd __attribute__ ((unused)),
 428                 int argc, char *argv[])
 429 {
 430     int i;
 431     const char *vtdebug;
 432
 433     for (i = 0; i < argc; i++)
 434     {
 435         ventoy_linux_args[ventoy_linux_argc + (LINUX_MAX_ARGC / 2) ] = grub_strdup(argv[i]);
 436         ventoy_linux_argc++;
 437     }
 438
 439     vtdebug = grub_env_get("vtdebug_flag");
 440     if (vtdebug && vtdebug[0])
 441     {
 442         ventoy_debug = 1;
 443     }
 444
 445     if (ventoy_debug) grub_printf("ventoy set boot opt %d\n", ventoy_linux_argc);
 446
 447     return 0;
 448 }
 449
 450 static grub_err_t
 451 grub_cmd_unset_boot_opt (grub_command_t cmd __attribute__ ((unused)),
 452                 int argc, char *argv[])
 453 {
 454     int i;
 455
 456     (void)argc;
 457     (void)argv;
 458
 459     for (i = 0; i < LINUX_MAX_ARGC; i++)
 460     {
 461         if (ventoy_linux_args[i])
 462         {
 463             grub_free(ventoy_linux_args[i]);
 464         }
 465     }
 466
 467     ventoy_debug = 0;
 468     ventoy_linux_argc = 0;
 469     ventoy_initrd_called = 0;
 470     grub_memset(ventoy_linux_args, 0, sizeof(char *) * LINUX_MAX_ARGC);
 471     return 0;
 472 }
 473
 474 static grub_err_t
 475 grub_cmd_extra_initrd_append (grub_command_t cmd __attribute__ ((unused)),
 476                 int argc, char *argv[])
 477 {
 478     int newclen = 0;
 479     char *pos = NULL;
 480     char *end = NULL;
 481     char buf[256] = {0};
 482
 483     if (argc != 1)
 484     {
 485         return 1;
 486     }
 487
 488     for (pos = argv[0]; *pos; pos++)
 489     {
 490         if (*pos == '/')
 491         {
 492             end = pos;
 493         }
 494     }
 495
 496     if (end)
 497     {
 498         /* grub2 newc bug workaround */
 499         newclen = (int)grub_strlen(end + 1);
 500         if ((110 + newclen) % 4 == 0)
 501         {
 502             grub_snprintf(buf, sizeof(buf), "newc:.%s:%s", end + 1, argv[0]);
 503         }
 504         else
 505         {
 506             grub_snprintf(buf, sizeof(buf), "newc:%s:%s", end + 1, argv[0]);
 507         }
 508
 509         if (ventoy_extra_initrd_num < 256)
 510         {
 511             ventoy_extra_initrd_list[ventoy_extra_initrd_num++] = grub_strdup(buf);
 512         }
 513     }
 514
 515     return 0;
 516 }
 517
 518 static grub_err_t
 519 grub_cmd_extra_initrd_reset (grub_command_t cmd __attribute__ ((unused)),
 520                 int argc, char *argv[])
 521 {
 522     int i;
 523
 524     (void)argc;
 525     (void)argv;
 526
 527     for (i = 0; i < ventoy_extra_initrd_num; i++)
 528     {
 529         if (ventoy_extra_initrd_list[i])
 530         {
 531             grub_free(ventoy_extra_initrd_list[i]);
 532         }
 533     }
 534
 535     grub_memset(ventoy_extra_initrd_list, 0, sizeof(ventoy_extra_initrd_list));
 536
 537     return 0;
 538 }
 539
 540
 541 static grub_err_t
 542 grub_linux_boot (void)
 543 {
 544   ventoy_preboot();
 545
 546   if (finalize_params_linux () != GRUB_ERR_NONE)
 547     return grub_errno;
 548
 549   return (grub_arch_efi_linux_boot_image((grub_addr_t)kernel_addr,
 550                                           kernel_size, linux_args));
 551 }
 552
 553 static grub_err_t
 554 grub_linux_unload (void)
 555 {
 556   grub_dl_unref (my_mod);
 557   loaded = 0;
 558   if (initrd_start)
 559     grub_efi_free_pages ((grub_efi_physical_address_t) initrd_start,
 560                          GRUB_EFI_BYTES_TO_PAGES (initrd_end - initrd_start));
 561   initrd_start = initrd_end = 0;
 562   grub_free (linux_args);
 563   if (kernel_addr)
 564     grub_efi_free_pages ((grub_addr_t) kernel_addr,
 565                          GRUB_EFI_BYTES_TO_PAGES (kernel_size));
 566   grub_fdt_unload ();
 567   return GRUB_ERR_NONE;
 568 }
 569
 570 /*
 571  * As per linux/Documentation/arm/Booting
 572  * ARM initrd needs to be covered by kernel linear mapping,
 573  * so place it in the first 512MB of DRAM.
 574  *
 575  * As per linux/Documentation/arm64/booting.txt
 576  * ARM64 initrd needs to be contained entirely within a 1GB aligned window
 577  * of up to 32GB of size that covers the kernel image as well.
 578  * Since the EFI stub loader will attempt to load the kernel near start of
 579  * RAM, place the buffer in the first 32GB of RAM.
 580  */
 581 #ifdef __arm__
 582 #define INITRD_MAX_ADDRESS_OFFSET (512U * 1024 * 1024)
 583 #else /* __aarch64__ */
 584 #define INITRD_MAX_ADDRESS_OFFSET (32ULL * 1024 * 1024 * 1024)
 585 #endif
 586
 587 /*
 588  * This function returns a pointer to a legally allocated initrd buffer,
 589  * or NULL if unsuccessful
 590  */
 591 static void *
 592 allocate_initrd_mem (int initrd_pages)
 593 {
 594   grub_addr_t max_addr;
 595
 596   if (grub_efi_get_ram_base (&max_addr) != GRUB_ERR_NONE)
 597     return NULL;
 598
 599   max_addr += INITRD_MAX_ADDRESS_OFFSET - 1;
 600
 601   return grub_efi_allocate_pages_real (max_addr, initrd_pages,
 602                                        GRUB_EFI_ALLOCATE_MAX_ADDRESS,
 603                                        GRUB_EFI_LOADER_DATA);
 604 }
 605
 606 static grub_err_t
 607 grub_cmd_initrd (grub_command_t cmd __attribute__ ((unused)),
 608                  int argc, char *argv[])
 609 {
 610   struct grub_linux_initrd_context initrd_ctx = { 0, 0, 0 };
 611   int initrd_size, initrd_pages;
 612   void *initrd_mem = NULL;
 613
 614   if (argc == 0)
 615     {
 616       grub_error (GRUB_ERR_BAD_ARGUMENT, N_("filename expected"));
 617       goto fail;
 618     }
 619
 620   if (!loaded)
 621     {
 622       grub_error (GRUB_ERR_BAD_ARGUMENT,
 623                   N_("you need to load the kernel first"));
 624       goto fail;
 625     }
 626
 627   if (grub_initrd_init (argc, argv, &initrd_ctx))
 628     goto fail;
 629
 630   initrd_size = grub_get_initrd_size (&initrd_ctx);
 631   grub_dprintf ("linux", "Loading initrd\n");
 632
 633   initrd_pages = (GRUB_EFI_BYTES_TO_PAGES (initrd_size));
 634   initrd_mem = allocate_initrd_mem (initrd_pages);
 635
 636   if (!initrd_mem)
 637     {
 638       grub_error (GRUB_ERR_OUT_OF_MEMORY, N_("out of memory"));
 639       goto fail;
 640     }
 641
 642   if (grub_initrd_load (&initrd_ctx, argv, initrd_mem))
 643     goto fail;
 644
 645   initrd_start = (grub_addr_t) initrd_mem;
 646   initrd_end = initrd_start + initrd_size;
 647   grub_dprintf ("linux", "[addr=%p, size=0x%x]\n",
 648                 (void *) initrd_start, initrd_size);
 649
 650  fail:
 651   grub_initrd_close (&initrd_ctx);
 652   if (initrd_mem && !initrd_start)
 653     grub_efi_free_pages ((grub_addr_t) initrd_mem, initrd_pages);
 654
 655   return grub_errno;
 656 }
 657
 658 static grub_err_t
 659 grub_cmd_linux (grub_command_t cmd __attribute__ ((unused)),
 660                 int argc, char *argv[])
 661 {
 662   grub_file_t file = 0;
 663   struct linux_arch_kernel_header lh;
 664   grub_err_t err;
 665
 666   grub_dl_ref (my_mod);
 667
 668   if (argc == 0)
 669     {
 670       grub_error (GRUB_ERR_BAD_ARGUMENT, N_("filename expected"));
 671       goto fail;
 672     }
 673
 674   file = grub_file_open (argv[0], GRUB_FILE_TYPE_LINUX_KERNEL);
 675   if (!file)
 676     goto fail;
 677
 678   kernel_size = grub_file_size (file);
 679
 680   if (grub_file_read (file, &lh, sizeof (lh)) < (long) sizeof (lh))
 681     return grub_errno;
 682
 683   if (grub_arch_efi_linux_check_image (&lh) != GRUB_ERR_NONE)
 684     goto fail;
 685
 686   grub_loader_unset();
 687
 688   grub_dprintf ("linux", "kernel file size: %lld\n", (long long) kernel_size);
 689   kernel_addr = grub_efi_allocate_any_pages (GRUB_EFI_BYTES_TO_PAGES (kernel_size));
 690   grub_dprintf ("linux", "kernel numpages: %lld\n",
 691                 (long long) GRUB_EFI_BYTES_TO_PAGES (kernel_size));
 692   if (!kernel_addr)
 693     {
 694       grub_error (GRUB_ERR_OUT_OF_MEMORY, N_("out of memory"));
 695       goto fail;
 696     }
 697
 698   grub_file_seek (file, 0);
 699   if (grub_file_read (file, kernel_addr, kernel_size)
 700       < (grub_int64_t) kernel_size)
 701     {
 702       if (!grub_errno)
 703         grub_error (GRUB_ERR_BAD_OS, N_("premature end of file %s"), argv[0]);
 704       goto fail;
 705     }
 706
 707   grub_dprintf ("linux", "kernel @ %p\n", kernel_addr);
 708
 709   cmdline_size = grub_loader_cmdline_size (argc, argv) + sizeof (LINUX_IMAGE);
 710   linux_args = grub_malloc (cmdline_size);
 711   if (!linux_args)
 712     {
 713       grub_error (GRUB_ERR_OUT_OF_MEMORY, N_("out of memory"));
 714       goto fail;
 715     }
 716   grub_memcpy (linux_args, LINUX_IMAGE, sizeof (LINUX_IMAGE));
 717
 718   if (ventoy_linux_argc)
 719   {
 720       ventoy_bootopt_hook(argc, argv);
 721       err = grub_create_loader_cmdline (ventoy_linux_argc, ventoy_linux_args,
 722                                     linux_args + sizeof (LINUX_IMAGE) - 1,
 723                                     cmdline_size,
 724                                     GRUB_VERIFY_KERNEL_CMDLINE);  }
 725   else
 726   {
 727       err = grub_create_loader_cmdline (argc, argv,
 728                                     linux_args + sizeof (LINUX_IMAGE) - 1,
 729                                     cmdline_size,
 730                                     GRUB_VERIFY_KERNEL_CMDLINE);
 731   }
 732
 733   if (err)
 734     goto fail;
 735
 736   if (grub_errno == GRUB_ERR_NONE)
 737     {
 738       grub_loader_set (grub_linux_boot, grub_linux_unload, 0);
 739       loaded = 1;
 740     }
 741
 742 fail:
 743   if (file)
 744     grub_file_close (file);
 745
 746   if (grub_errno != GRUB_ERR_NONE)
 747     {
 748       grub_dl_unref (my_mod);
 749       loaded = 0;
 750     }
 751
 752   if (linux_args && !loaded)
 753     grub_free (linux_args);
 754
 755   if (kernel_addr && !loaded)
 756     grub_efi_free_pages ((grub_addr_t) kernel_addr,
 757                          GRUB_EFI_BYTES_TO_PAGES (kernel_size));
 758
 759   return grub_errno;
 760 }
 761
 762 static grub_err_t
 763 ventoy_cmd_initrd (grub_command_t cmd __attribute__ ((unused)),
 764                  int argc, char *argv[])
 765 {
 766     int i;
 767     const char *file;
 768     char buf[64];
 769
 770     if (ventoy_debug) grub_printf("ventoy_cmd_initrd %d\n", ventoy_linux_argc);
 771
 772     if (ventoy_linux_argc == 0)
 773     {
 774         return grub_cmd_initrd(cmd, argc, argv);
 775     }
 776
 777     grub_snprintf(buf, sizeof(buf), "mem:%s:size:%s", grub_env_get("ventoy_cpio_addr"), grub_env_get("ventoy_cpio_size"));
 778
 779     if (ventoy_debug) grub_printf("membuf=%s\n", buf);
 780
 781     ventoy_extra_initrd_list[ventoy_extra_initrd_num++] = grub_strdup(buf);
 782
 783     file = grub_env_get("vtoy_img_part_file");
 784     if (file)
 785     {
 786         ventoy_extra_initrd_list[ventoy_extra_initrd_num++] = grub_strdup(file);
 787     }
 788
 789     for (i = 0; i < argc; i++)
 790     {
 791         ventoy_extra_initrd_list[ventoy_extra_initrd_num++] = grub_strdup(argv[i]);
 792     }
 793
 794     ventoy_initrd_called = 1;
 795
 796     if (ventoy_debug)
 797     {
 798         grub_printf("========== initrd list ==========\n");
 799         for (i = 0; i < ventoy_extra_initrd_num; i++)
 800         {
 801             grub_printf("%s\n", ventoy_extra_initrd_list[i]);
 802         }
 803         grub_printf("=================================\n");
 804     }
 805
 806     return grub_cmd_initrd(cmd, ventoy_extra_initrd_num, ventoy_extra_initrd_list);
 807 }
 808
 809
 810 static grub_command_t cmd_linux, cmd_initrd, cmd_linuxefi, cmd_initrdefi;
 811 static grub_command_t cmd_set_bootopt, cmd_unset_bootopt, cmd_extra_initrd_append, cmd_extra_initrd_reset;
 812
 813
 814 GRUB_MOD_INIT (linux)
 815 {
 816   cmd_linux = grub_register_command ("linux", grub_cmd_linux, 0,
 817                                      N_("Load Linux."));
 818   cmd_initrd = grub_register_command ("initrd", ventoy_cmd_initrd, 0,
 819                                       N_("Load initrd."));
 820
 821   cmd_linuxefi = grub_register_command ("linuxefi", grub_cmd_linux,
 822                                      0, N_("Load Linux."));
 823   cmd_initrdefi = grub_register_command ("initrdefi", ventoy_cmd_initrd,
 824                                       0, N_("Load initrd."));
 825
 826   cmd_set_bootopt = grub_register_command ("vt_set_boot_opt", grub_cmd_set_boot_opt, 0, N_("set ext boot opt"));
 827   cmd_unset_bootopt = grub_register_command ("vt_unset_boot_opt", grub_cmd_unset_boot_opt, 0, N_("unset ext boot opt"));
 828
 829   cmd_extra_initrd_append = grub_register_command ("vt_img_extra_initrd_append", grub_cmd_extra_initrd_append, 0, N_(""));
 830   cmd_extra_initrd_reset = grub_register_command ("vt_img_extra_initrd_reset", grub_cmd_extra_initrd_reset, 0, N_(""));
 831
 832   ventoy_linux_args = grub_zalloc(sizeof(char *) * LINUX_MAX_ARGC);
 833
 834   my_mod = mod;
 835 }
 836
 837 GRUB_MOD_FINI (linux)
 838 {
 839   grub_unregister_command (cmd_linux);
 840   grub_unregister_command (cmd_initrd);
 841 }