bootm.c 24 KB

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * (C) Copyright 2000-2009
  4. * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  5. */
  6. #ifndef USE_HOSTCC
  7. #include <common.h>
  8. #include <bootstage.h>
  9. #include <cpu_func.h>
  10. #include <env.h>
  11. #include <errno.h>
  12. #include <fdt_support.h>
  13. #include <irq_func.h>
  14. #include <lmb.h>
  15. #include <log.h>
  16. #include <malloc.h>
  17. #include <mapmem.h>
  18. #include <net.h>
  19. #include <asm/cache.h>
  20. #include <asm/io.h>
  21. #if defined(CONFIG_CMD_USB)
  22. #include <usb.h>
  23. #endif
  24. #else
  25. #include "mkimage.h"
  26. #endif
  27. #include <command.h>
  28. #include <bootm.h>
  29. #include <image.h>
  30. #ifndef CONFIG_SYS_BOOTM_LEN
  31. /* use 8MByte as default max gunzip size */
  32. #define CONFIG_SYS_BOOTM_LEN 0x800000
  33. #endif
  34. #define IH_INITRD_ARCH IH_ARCH_DEFAULT
  35. #ifndef USE_HOSTCC
  36. DECLARE_GLOBAL_DATA_PTR;
  37. bootm_headers_t images; /* pointers to os/initrd/fdt images */
  38. static const void *boot_get_kernel(struct cmd_tbl *cmdtp, int flag, int argc,
  39. char *const argv[], bootm_headers_t *images,
  40. ulong *os_data, ulong *os_len);
  41. __weak void board_quiesce_devices(void)
  42. {
  43. }
  44. #ifdef CONFIG_LMB
  45. static void boot_start_lmb(bootm_headers_t *images)
  46. {
  47. ulong mem_start;
  48. phys_size_t mem_size;
  49. mem_start = env_get_bootm_low();
  50. mem_size = env_get_bootm_size();
  51. lmb_init_and_reserve_range(&images->lmb, (phys_addr_t)mem_start,
  52. mem_size, NULL);
  53. }
  54. #else
  55. #define lmb_reserve(lmb, base, size)
  56. static inline void boot_start_lmb(bootm_headers_t *images) { }
  57. #endif
  58. static int bootm_start(struct cmd_tbl *cmdtp, int flag, int argc,
  59. char *const argv[])
  60. {
  61. memset((void *)&images, 0, sizeof(images));
  62. images.verify = env_get_yesno("verify");
  63. boot_start_lmb(&images);
  64. bootstage_mark_name(BOOTSTAGE_ID_BOOTM_START, "bootm_start");
  65. images.state = BOOTM_STATE_START;
  66. return 0;
  67. }
  68. static int bootm_find_os(struct cmd_tbl *cmdtp, int flag, int argc,
  69. char *const argv[])
  70. {
  71. const void *os_hdr;
  72. bool ep_found = false;
  73. int ret;
  74. /* get kernel image header, start address and length */
  75. os_hdr = boot_get_kernel(cmdtp, flag, argc, argv,
  76. &images, &images.os.image_start, &images.os.image_len);
  77. if (images.os.image_len == 0) {
  78. puts("ERROR: can't get kernel image!\n");
  79. return 1;
  80. }
  81. /* get image parameters */
  82. switch (genimg_get_format(os_hdr)) {
  83. #if CONFIG_IS_ENABLED(LEGACY_IMAGE_FORMAT)
  84. case IMAGE_FORMAT_LEGACY:
  85. images.os.type = image_get_type(os_hdr);
  86. images.os.comp = image_get_comp(os_hdr);
  87. images.os.os = image_get_os(os_hdr);
  88. images.os.end = image_get_image_end(os_hdr);
  89. images.os.load = image_get_load(os_hdr);
  90. images.os.arch = image_get_arch(os_hdr);
  91. break;
  92. #endif
  93. #if IMAGE_ENABLE_FIT
  94. case IMAGE_FORMAT_FIT:
  95. if (fit_image_get_type(images.fit_hdr_os,
  96. images.fit_noffset_os,
  97. &images.os.type)) {
  98. puts("Can't get image type!\n");
  99. bootstage_error(BOOTSTAGE_ID_FIT_TYPE);
  100. return 1;
  101. }
  102. if (fit_image_get_comp(images.fit_hdr_os,
  103. images.fit_noffset_os,
  104. &images.os.comp)) {
  105. puts("Can't get image compression!\n");
  106. bootstage_error(BOOTSTAGE_ID_FIT_COMPRESSION);
  107. return 1;
  108. }
  109. if (fit_image_get_os(images.fit_hdr_os, images.fit_noffset_os,
  110. &images.os.os)) {
  111. puts("Can't get image OS!\n");
  112. bootstage_error(BOOTSTAGE_ID_FIT_OS);
  113. return 1;
  114. }
  115. if (fit_image_get_arch(images.fit_hdr_os,
  116. images.fit_noffset_os,
  117. &images.os.arch)) {
  118. puts("Can't get image ARCH!\n");
  119. return 1;
  120. }
  121. images.os.end = fit_get_end(images.fit_hdr_os);
  122. if (fit_image_get_load(images.fit_hdr_os, images.fit_noffset_os,
  123. &images.os.load)) {
  124. puts("Can't get image load address!\n");
  125. bootstage_error(BOOTSTAGE_ID_FIT_LOADADDR);
  126. return 1;
  127. }
  128. break;
  129. #endif
  130. #ifdef CONFIG_ANDROID_BOOT_IMAGE
  131. case IMAGE_FORMAT_ANDROID:
  132. images.os.type = IH_TYPE_KERNEL;
  133. images.os.comp = android_image_get_kcomp(os_hdr);
  134. images.os.os = IH_OS_LINUX;
  135. images.os.end = android_image_get_end(os_hdr);
  136. images.os.load = android_image_get_kload(os_hdr);
  137. images.ep = images.os.load;
  138. ep_found = true;
  139. break;
  140. #endif
  141. default:
  142. puts("ERROR: unknown image format type!\n");
  143. return 1;
  144. }
  145. /* If we have a valid setup.bin, we will use that for entry (x86) */
  146. if (images.os.arch == IH_ARCH_I386 ||
  147. images.os.arch == IH_ARCH_X86_64) {
  148. ulong len;
  149. ret = boot_get_setup(&images, IH_ARCH_I386, &images.ep, &len);
  150. if (ret < 0 && ret != -ENOENT) {
  151. puts("Could not find a valid setup.bin for x86\n");
  152. return 1;
  153. }
  154. /* Kernel entry point is the setup.bin */
  155. } else if (images.legacy_hdr_valid) {
  156. images.ep = image_get_ep(&images.legacy_hdr_os_copy);
  157. #if IMAGE_ENABLE_FIT
  158. } else if (images.fit_uname_os) {
  159. int ret;
  160. ret = fit_image_get_entry(images.fit_hdr_os,
  161. images.fit_noffset_os, &images.ep);
  162. if (ret) {
  163. puts("Can't get entry point property!\n");
  164. return 1;
  165. }
  166. #endif
  167. } else if (!ep_found) {
  168. puts("Could not find kernel entry point!\n");
  169. return 1;
  170. }
  171. if (images.os.type == IH_TYPE_KERNEL_NOLOAD) {
  172. if (CONFIG_IS_ENABLED(CMD_BOOTI) &&
  173. images.os.arch == IH_ARCH_ARM64) {
  174. ulong image_addr;
  175. ulong image_size;
  176. ret = booti_setup(images.os.image_start, &image_addr,
  177. &image_size, true);
  178. if (ret != 0)
  179. return 1;
  180. images.os.type = IH_TYPE_KERNEL;
  181. images.os.load = image_addr;
  182. images.ep = image_addr;
  183. } else {
  184. images.os.load = images.os.image_start;
  185. images.ep += images.os.image_start;
  186. }
  187. }
  188. images.os.start = map_to_sysmem(os_hdr);
  189. return 0;
  190. }
  191. /**
  192. * bootm_find_images - wrapper to find and locate various images
  193. * @flag: Ignored Argument
  194. * @argc: command argument count
  195. * @argv: command argument list
  196. *
  197. * boot_find_images() will attempt to load an available ramdisk,
  198. * flattened device tree, as well as specifically marked
  199. * "loadable" images (loadables are FIT only)
  200. *
  201. * Note: bootm_find_images will skip an image if it is not found
  202. *
  203. * @return:
  204. * 0, if all existing images were loaded correctly
  205. * 1, if an image is found but corrupted, or invalid
  206. */
  207. int bootm_find_images(int flag, int argc, char *const argv[])
  208. {
  209. int ret;
  210. /* find ramdisk */
  211. ret = boot_get_ramdisk(argc, argv, &images, IH_INITRD_ARCH,
  212. &images.rd_start, &images.rd_end);
  213. if (ret) {
  214. puts("Ramdisk image is corrupt or invalid\n");
  215. return 1;
  216. }
  217. #if IMAGE_ENABLE_OF_LIBFDT
  218. /* find flattened device tree */
  219. ret = boot_get_fdt(flag, argc, argv, IH_ARCH_DEFAULT, &images,
  220. &images.ft_addr, &images.ft_len);
  221. if (ret) {
  222. puts("Could not find a valid device tree\n");
  223. return 1;
  224. }
  225. if (CONFIG_IS_ENABLED(CMD_FDT))
  226. set_working_fdt_addr(map_to_sysmem(images.ft_addr));
  227. #endif
  228. #if IMAGE_ENABLE_FIT
  229. #if defined(CONFIG_FPGA)
  230. /* find bitstreams */
  231. ret = boot_get_fpga(argc, argv, &images, IH_ARCH_DEFAULT,
  232. NULL, NULL);
  233. if (ret) {
  234. printf("FPGA image is corrupted or invalid\n");
  235. return 1;
  236. }
  237. #endif
  238. /* find all of the loadables */
  239. ret = boot_get_loadable(argc, argv, &images, IH_ARCH_DEFAULT,
  240. NULL, NULL);
  241. if (ret) {
  242. printf("Loadable(s) is corrupt or invalid\n");
  243. return 1;
  244. }
  245. #endif
  246. return 0;
  247. }
  248. static int bootm_find_other(struct cmd_tbl *cmdtp, int flag, int argc,
  249. char *const argv[])
  250. {
  251. if (((images.os.type == IH_TYPE_KERNEL) ||
  252. (images.os.type == IH_TYPE_KERNEL_NOLOAD) ||
  253. (images.os.type == IH_TYPE_MULTI)) &&
  254. (images.os.os == IH_OS_LINUX ||
  255. images.os.os == IH_OS_VXWORKS))
  256. return bootm_find_images(flag, argc, argv);
  257. return 0;
  258. }
  259. #endif /* USE_HOSTC */
  260. #if !defined(USE_HOSTCC) || defined(CONFIG_FIT_SIGNATURE)
  261. /**
  262. * handle_decomp_error() - display a decompression error
  263. *
  264. * This function tries to produce a useful message. In the case where the
  265. * uncompressed size is the same as the available space, we can assume that
  266. * the image is too large for the buffer.
  267. *
  268. * @comp_type: Compression type being used (IH_COMP_...)
  269. * @uncomp_size: Number of bytes uncompressed
  270. * @ret: errno error code received from compression library
  271. * @return Appropriate BOOTM_ERR_ error code
  272. */
  273. static int handle_decomp_error(int comp_type, size_t uncomp_size, int ret)
  274. {
  275. const char *name = genimg_get_comp_name(comp_type);
  276. /* ENOSYS means unimplemented compression type, don't reset. */
  277. if (ret == -ENOSYS)
  278. return BOOTM_ERR_UNIMPLEMENTED;
  279. if (uncomp_size >= CONFIG_SYS_BOOTM_LEN)
  280. printf("Image too large: increase CONFIG_SYS_BOOTM_LEN\n");
  281. else
  282. printf("%s: uncompress error %d\n", name, ret);
  283. /*
  284. * The decompression routines are now safe, so will not write beyond
  285. * their bounds. Probably it is not necessary to reset, but maintain
  286. * the current behaviour for now.
  287. */
  288. printf("Must RESET board to recover\n");
  289. #ifndef USE_HOSTCC
  290. bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
  291. #endif
  292. return BOOTM_ERR_RESET;
  293. }
  294. #endif
  295. #ifndef USE_HOSTCC
  296. static int bootm_load_os(bootm_headers_t *images, int boot_progress)
  297. {
  298. image_info_t os = images->os;
  299. ulong load = os.load;
  300. ulong load_end;
  301. ulong blob_start = os.start;
  302. ulong blob_end = os.end;
  303. ulong image_start = os.image_start;
  304. ulong image_len = os.image_len;
  305. ulong flush_start = ALIGN_DOWN(load, ARCH_DMA_MINALIGN);
  306. bool no_overlap;
  307. void *load_buf, *image_buf;
  308. int err;
  309. load_buf = map_sysmem(load, 0);
  310. image_buf = map_sysmem(os.image_start, image_len);
  311. err = image_decomp(os.comp, load, os.image_start, os.type,
  312. load_buf, image_buf, image_len,
  313. CONFIG_SYS_BOOTM_LEN, &load_end);
  314. if (err) {
  315. err = handle_decomp_error(os.comp, load_end - load, err);
  316. bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
  317. return err;
  318. }
  319. flush_cache(flush_start, ALIGN(load_end, ARCH_DMA_MINALIGN) - flush_start);
  320. debug(" kernel loaded at 0x%08lx, end = 0x%08lx\n", load, load_end);
  321. bootstage_mark(BOOTSTAGE_ID_KERNEL_LOADED);
  322. no_overlap = (os.comp == IH_COMP_NONE && load == image_start);
  323. if (!no_overlap && load < blob_end && load_end > blob_start) {
  324. debug("images.os.start = 0x%lX, images.os.end = 0x%lx\n",
  325. blob_start, blob_end);
  326. debug("images.os.load = 0x%lx, load_end = 0x%lx\n", load,
  327. load_end);
  328. /* Check what type of image this is. */
  329. if (images->legacy_hdr_valid) {
  330. if (image_get_type(&images->legacy_hdr_os_copy)
  331. == IH_TYPE_MULTI)
  332. puts("WARNING: legacy format multi component image overwritten\n");
  333. return BOOTM_ERR_OVERLAP;
  334. } else {
  335. puts("ERROR: new format image overwritten - must RESET the board to recover\n");
  336. bootstage_error(BOOTSTAGE_ID_OVERWRITTEN);
  337. return BOOTM_ERR_RESET;
  338. }
  339. }
  340. lmb_reserve(&images->lmb, images->os.load, (load_end -
  341. images->os.load));
  342. return 0;
  343. }
  344. /**
  345. * bootm_disable_interrupts() - Disable interrupts in preparation for load/boot
  346. *
  347. * @return interrupt flag (0 if interrupts were disabled, non-zero if they were
  348. * enabled)
  349. */
  350. ulong bootm_disable_interrupts(void)
  351. {
  352. ulong iflag;
  353. /*
  354. * We have reached the point of no return: we are going to
  355. * overwrite all exception vector code, so we cannot easily
  356. * recover from any failures any more...
  357. */
  358. iflag = disable_interrupts();
  359. #ifdef CONFIG_NETCONSOLE
  360. /* Stop the ethernet stack if NetConsole could have left it up */
  361. eth_halt();
  362. # ifndef CONFIG_DM_ETH
  363. eth_unregister(eth_get_dev());
  364. # endif
  365. #endif
  366. #if defined(CONFIG_CMD_USB)
  367. /*
  368. * turn off USB to prevent the host controller from writing to the
  369. * SDRAM while Linux is booting. This could happen (at least for OHCI
  370. * controller), because the HCCA (Host Controller Communication Area)
  371. * lies within the SDRAM and the host controller writes continously to
  372. * this area (as busmaster!). The HccaFrameNumber is for example
  373. * updated every 1 ms within the HCCA structure in SDRAM! For more
  374. * details see the OpenHCI specification.
  375. */
  376. usb_stop();
  377. #endif
  378. return iflag;
  379. }
  380. #if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY)
  381. #define CONSOLE_ARG "console="
  382. #define CONSOLE_ARG_LEN (sizeof(CONSOLE_ARG) - 1)
  383. static void fixup_silent_linux(void)
  384. {
  385. char *buf;
  386. const char *env_val;
  387. char *cmdline = env_get("bootargs");
  388. int want_silent;
  389. /*
  390. * Only fix cmdline when requested. The environment variable can be:
  391. *
  392. * no - we never fixup
  393. * yes - we always fixup
  394. * unset - we rely on the console silent flag
  395. */
  396. want_silent = env_get_yesno("silent_linux");
  397. if (want_silent == 0)
  398. return;
  399. else if (want_silent == -1 && !(gd->flags & GD_FLG_SILENT))
  400. return;
  401. debug("before silent fix-up: %s\n", cmdline);
  402. if (cmdline && (cmdline[0] != '\0')) {
  403. char *start = strstr(cmdline, CONSOLE_ARG);
  404. /* Allocate space for maximum possible new command line */
  405. buf = malloc(strlen(cmdline) + 1 + CONSOLE_ARG_LEN + 1);
  406. if (!buf) {
  407. debug("%s: out of memory\n", __func__);
  408. return;
  409. }
  410. if (start) {
  411. char *end = strchr(start, ' ');
  412. int num_start_bytes = start - cmdline + CONSOLE_ARG_LEN;
  413. strncpy(buf, cmdline, num_start_bytes);
  414. if (end)
  415. strcpy(buf + num_start_bytes, end);
  416. else
  417. buf[num_start_bytes] = '\0';
  418. } else {
  419. sprintf(buf, "%s %s", cmdline, CONSOLE_ARG);
  420. }
  421. env_val = buf;
  422. } else {
  423. buf = NULL;
  424. env_val = CONSOLE_ARG;
  425. }
  426. env_set("bootargs", env_val);
  427. debug("after silent fix-up: %s\n", env_val);
  428. free(buf);
  429. }
  430. #endif /* CONFIG_SILENT_CONSOLE */
  431. /**
  432. * Execute selected states of the bootm command.
  433. *
  434. * Note the arguments to this state must be the first argument, Any 'bootm'
  435. * or sub-command arguments must have already been taken.
  436. *
  437. * Note that if states contains more than one flag it MUST contain
  438. * BOOTM_STATE_START, since this handles and consumes the command line args.
  439. *
  440. * Also note that aside from boot_os_fn functions and bootm_load_os no other
  441. * functions we store the return value of in 'ret' may use a negative return
  442. * value, without special handling.
  443. *
  444. * @param cmdtp Pointer to bootm command table entry
  445. * @param flag Command flags (CMD_FLAG_...)
  446. * @param argc Number of subcommand arguments (0 = no arguments)
  447. * @param argv Arguments
  448. * @param states Mask containing states to run (BOOTM_STATE_...)
  449. * @param images Image header information
  450. * @param boot_progress 1 to show boot progress, 0 to not do this
  451. * @return 0 if ok, something else on error. Some errors will cause this
  452. * function to perform a reboot! If states contains BOOTM_STATE_OS_GO
  453. * then the intent is to boot an OS, so this function will not return
  454. * unless the image type is standalone.
  455. */
  456. int do_bootm_states(struct cmd_tbl *cmdtp, int flag, int argc,
  457. char *const argv[], int states, bootm_headers_t *images,
  458. int boot_progress)
  459. {
  460. boot_os_fn *boot_fn;
  461. ulong iflag = 0;
  462. int ret = 0, need_boot_fn;
  463. images->state |= states;
  464. /*
  465. * Work through the states and see how far we get. We stop on
  466. * any error.
  467. */
  468. if (states & BOOTM_STATE_START)
  469. ret = bootm_start(cmdtp, flag, argc, argv);
  470. if (!ret && (states & BOOTM_STATE_FINDOS))
  471. ret = bootm_find_os(cmdtp, flag, argc, argv);
  472. if (!ret && (states & BOOTM_STATE_FINDOTHER))
  473. ret = bootm_find_other(cmdtp, flag, argc, argv);
  474. /* Load the OS */
  475. if (!ret && (states & BOOTM_STATE_LOADOS)) {
  476. iflag = bootm_disable_interrupts();
  477. ret = bootm_load_os(images, 0);
  478. if (ret && ret != BOOTM_ERR_OVERLAP)
  479. goto err;
  480. else if (ret == BOOTM_ERR_OVERLAP)
  481. ret = 0;
  482. }
  483. /* Relocate the ramdisk */
  484. #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
  485. if (!ret && (states & BOOTM_STATE_RAMDISK)) {
  486. ulong rd_len = images->rd_end - images->rd_start;
  487. ret = boot_ramdisk_high(&images->lmb, images->rd_start,
  488. rd_len, &images->initrd_start, &images->initrd_end);
  489. if (!ret) {
  490. env_set_hex("initrd_start", images->initrd_start);
  491. env_set_hex("initrd_end", images->initrd_end);
  492. }
  493. }
  494. #endif
  495. #if IMAGE_ENABLE_OF_LIBFDT && defined(CONFIG_LMB)
  496. if (!ret && (states & BOOTM_STATE_FDT)) {
  497. boot_fdt_add_mem_rsv_regions(&images->lmb, images->ft_addr);
  498. ret = boot_relocate_fdt(&images->lmb, &images->ft_addr,
  499. &images->ft_len);
  500. }
  501. #endif
  502. /* From now on, we need the OS boot function */
  503. if (ret)
  504. return ret;
  505. boot_fn = bootm_os_get_boot_func(images->os.os);
  506. need_boot_fn = states & (BOOTM_STATE_OS_CMDLINE |
  507. BOOTM_STATE_OS_BD_T | BOOTM_STATE_OS_PREP |
  508. BOOTM_STATE_OS_FAKE_GO | BOOTM_STATE_OS_GO);
  509. if (boot_fn == NULL && need_boot_fn) {
  510. if (iflag)
  511. enable_interrupts();
  512. printf("ERROR: booting os '%s' (%d) is not supported\n",
  513. genimg_get_os_name(images->os.os), images->os.os);
  514. bootstage_error(BOOTSTAGE_ID_CHECK_BOOT_OS);
  515. return 1;
  516. }
  517. /* Call various other states that are not generally used */
  518. if (!ret && (states & BOOTM_STATE_OS_CMDLINE))
  519. ret = boot_fn(BOOTM_STATE_OS_CMDLINE, argc, argv, images);
  520. if (!ret && (states & BOOTM_STATE_OS_BD_T))
  521. ret = boot_fn(BOOTM_STATE_OS_BD_T, argc, argv, images);
  522. if (!ret && (states & BOOTM_STATE_OS_PREP)) {
  523. #if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY)
  524. if (images->os.os == IH_OS_LINUX)
  525. fixup_silent_linux();
  526. #endif
  527. ret = boot_fn(BOOTM_STATE_OS_PREP, argc, argv, images);
  528. }
  529. #ifdef CONFIG_TRACE
  530. /* Pretend to run the OS, then run a user command */
  531. if (!ret && (states & BOOTM_STATE_OS_FAKE_GO)) {
  532. char *cmd_list = env_get("fakegocmd");
  533. ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_FAKE_GO,
  534. images, boot_fn);
  535. if (!ret && cmd_list)
  536. ret = run_command_list(cmd_list, -1, flag);
  537. }
  538. #endif
  539. /* Check for unsupported subcommand. */
  540. if (ret) {
  541. puts("subcommand not supported\n");
  542. return ret;
  543. }
  544. /* Now run the OS! We hope this doesn't return */
  545. if (!ret && (states & BOOTM_STATE_OS_GO))
  546. ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_GO,
  547. images, boot_fn);
  548. /* Deal with any fallout */
  549. err:
  550. if (iflag)
  551. enable_interrupts();
  552. if (ret == BOOTM_ERR_UNIMPLEMENTED)
  553. bootstage_error(BOOTSTAGE_ID_DECOMP_UNIMPL);
  554. else if (ret == BOOTM_ERR_RESET)
  555. do_reset(cmdtp, flag, argc, argv);
  556. return ret;
  557. }
  558. #if CONFIG_IS_ENABLED(LEGACY_IMAGE_FORMAT)
  559. /**
  560. * image_get_kernel - verify legacy format kernel image
  561. * @img_addr: in RAM address of the legacy format image to be verified
  562. * @verify: data CRC verification flag
  563. *
  564. * image_get_kernel() verifies legacy image integrity and returns pointer to
  565. * legacy image header if image verification was completed successfully.
  566. *
  567. * returns:
  568. * pointer to a legacy image header if valid image was found
  569. * otherwise return NULL
  570. */
  571. static image_header_t *image_get_kernel(ulong img_addr, int verify)
  572. {
  573. image_header_t *hdr = (image_header_t *)img_addr;
  574. if (!image_check_magic(hdr)) {
  575. puts("Bad Magic Number\n");
  576. bootstage_error(BOOTSTAGE_ID_CHECK_MAGIC);
  577. return NULL;
  578. }
  579. bootstage_mark(BOOTSTAGE_ID_CHECK_HEADER);
  580. if (!image_check_hcrc(hdr)) {
  581. puts("Bad Header Checksum\n");
  582. bootstage_error(BOOTSTAGE_ID_CHECK_HEADER);
  583. return NULL;
  584. }
  585. bootstage_mark(BOOTSTAGE_ID_CHECK_CHECKSUM);
  586. image_print_contents(hdr);
  587. if (verify) {
  588. puts(" Verifying Checksum ... ");
  589. if (!image_check_dcrc(hdr)) {
  590. printf("Bad Data CRC\n");
  591. bootstage_error(BOOTSTAGE_ID_CHECK_CHECKSUM);
  592. return NULL;
  593. }
  594. puts("OK\n");
  595. }
  596. bootstage_mark(BOOTSTAGE_ID_CHECK_ARCH);
  597. if (!image_check_target_arch(hdr)) {
  598. printf("Unsupported Architecture 0x%x\n", image_get_arch(hdr));
  599. bootstage_error(BOOTSTAGE_ID_CHECK_ARCH);
  600. return NULL;
  601. }
  602. return hdr;
  603. }
  604. #endif
  605. /**
  606. * boot_get_kernel - find kernel image
  607. * @os_data: pointer to a ulong variable, will hold os data start address
  608. * @os_len: pointer to a ulong variable, will hold os data length
  609. *
  610. * boot_get_kernel() tries to find a kernel image, verifies its integrity
  611. * and locates kernel data.
  612. *
  613. * returns:
  614. * pointer to image header if valid image was found, plus kernel start
  615. * address and length, otherwise NULL
  616. */
  617. static const void *boot_get_kernel(struct cmd_tbl *cmdtp, int flag, int argc,
  618. char *const argv[], bootm_headers_t *images,
  619. ulong *os_data, ulong *os_len)
  620. {
  621. #if CONFIG_IS_ENABLED(LEGACY_IMAGE_FORMAT)
  622. image_header_t *hdr;
  623. #endif
  624. ulong img_addr;
  625. const void *buf;
  626. const char *fit_uname_config = NULL;
  627. const char *fit_uname_kernel = NULL;
  628. #if IMAGE_ENABLE_FIT
  629. int os_noffset;
  630. #endif
  631. img_addr = genimg_get_kernel_addr_fit(argc < 1 ? NULL : argv[0],
  632. &fit_uname_config,
  633. &fit_uname_kernel);
  634. bootstage_mark(BOOTSTAGE_ID_CHECK_MAGIC);
  635. /* check image type, for FIT images get FIT kernel node */
  636. *os_data = *os_len = 0;
  637. buf = map_sysmem(img_addr, 0);
  638. switch (genimg_get_format(buf)) {
  639. #if CONFIG_IS_ENABLED(LEGACY_IMAGE_FORMAT)
  640. case IMAGE_FORMAT_LEGACY:
  641. printf("## Booting kernel from Legacy Image at %08lx ...\n",
  642. img_addr);
  643. hdr = image_get_kernel(img_addr, images->verify);
  644. if (!hdr)
  645. return NULL;
  646. bootstage_mark(BOOTSTAGE_ID_CHECK_IMAGETYPE);
  647. /* get os_data and os_len */
  648. switch (image_get_type(hdr)) {
  649. case IH_TYPE_KERNEL:
  650. case IH_TYPE_KERNEL_NOLOAD:
  651. *os_data = image_get_data(hdr);
  652. *os_len = image_get_data_size(hdr);
  653. break;
  654. case IH_TYPE_MULTI:
  655. image_multi_getimg(hdr, 0, os_data, os_len);
  656. break;
  657. case IH_TYPE_STANDALONE:
  658. *os_data = image_get_data(hdr);
  659. *os_len = image_get_data_size(hdr);
  660. break;
  661. default:
  662. printf("Wrong Image Type for %s command\n",
  663. cmdtp->name);
  664. bootstage_error(BOOTSTAGE_ID_CHECK_IMAGETYPE);
  665. return NULL;
  666. }
  667. /*
  668. * copy image header to allow for image overwrites during
  669. * kernel decompression.
  670. */
  671. memmove(&images->legacy_hdr_os_copy, hdr,
  672. sizeof(image_header_t));
  673. /* save pointer to image header */
  674. images->legacy_hdr_os = hdr;
  675. images->legacy_hdr_valid = 1;
  676. bootstage_mark(BOOTSTAGE_ID_DECOMP_IMAGE);
  677. break;
  678. #endif
  679. #if IMAGE_ENABLE_FIT
  680. case IMAGE_FORMAT_FIT:
  681. os_noffset = fit_image_load(images, img_addr,
  682. &fit_uname_kernel, &fit_uname_config,
  683. IH_ARCH_DEFAULT, IH_TYPE_KERNEL,
  684. BOOTSTAGE_ID_FIT_KERNEL_START,
  685. FIT_LOAD_IGNORED, os_data, os_len);
  686. if (os_noffset < 0)
  687. return NULL;
  688. images->fit_hdr_os = map_sysmem(img_addr, 0);
  689. images->fit_uname_os = fit_uname_kernel;
  690. images->fit_uname_cfg = fit_uname_config;
  691. images->fit_noffset_os = os_noffset;
  692. break;
  693. #endif
  694. #ifdef CONFIG_ANDROID_BOOT_IMAGE
  695. case IMAGE_FORMAT_ANDROID:
  696. printf("## Booting Android Image at 0x%08lx ...\n", img_addr);
  697. if (android_image_get_kernel(buf, images->verify,
  698. os_data, os_len))
  699. return NULL;
  700. break;
  701. #endif
  702. default:
  703. printf("Wrong Image Format for %s command\n", cmdtp->name);
  704. bootstage_error(BOOTSTAGE_ID_FIT_KERNEL_INFO);
  705. return NULL;
  706. }
  707. debug(" kernel data at 0x%08lx, len = 0x%08lx (%ld)\n",
  708. *os_data, *os_len, *os_len);
  709. return buf;
  710. }
  711. /**
  712. * switch_to_non_secure_mode() - switch to non-secure mode
  713. *
  714. * This routine is overridden by architectures requiring this feature.
  715. */
  716. void __weak switch_to_non_secure_mode(void)
  717. {
  718. }
  719. #else /* USE_HOSTCC */
  720. #if defined(CONFIG_FIT_SIGNATURE)
  721. static int bootm_host_load_image(const void *fit, int req_image_type,
  722. int cfg_noffset)
  723. {
  724. const char *fit_uname_config = NULL;
  725. ulong data, len;
  726. bootm_headers_t images;
  727. int noffset;
  728. ulong load_end;
  729. uint8_t image_type;
  730. uint8_t imape_comp;
  731. void *load_buf;
  732. int ret;
  733. fit_uname_config = fdt_get_name(fit, cfg_noffset, NULL);
  734. memset(&images, '\0', sizeof(images));
  735. images.verify = 1;
  736. noffset = fit_image_load(&images, (ulong)fit,
  737. NULL, &fit_uname_config,
  738. IH_ARCH_DEFAULT, req_image_type, -1,
  739. FIT_LOAD_IGNORED, &data, &len);
  740. if (noffset < 0)
  741. return noffset;
  742. if (fit_image_get_type(fit, noffset, &image_type)) {
  743. puts("Can't get image type!\n");
  744. return -EINVAL;
  745. }
  746. if (fit_image_get_comp(fit, noffset, &imape_comp)) {
  747. puts("Can't get image compression!\n");
  748. return -EINVAL;
  749. }
  750. /* Allow the image to expand by a factor of 4, should be safe */
  751. load_buf = malloc((1 << 20) + len * 4);
  752. ret = image_decomp(imape_comp, 0, data, image_type, load_buf,
  753. (void *)data, len, CONFIG_SYS_BOOTM_LEN,
  754. &load_end);
  755. free(load_buf);
  756. if (ret) {
  757. ret = handle_decomp_error(imape_comp, load_end - 0, ret);
  758. if (ret != BOOTM_ERR_UNIMPLEMENTED)
  759. return ret;
  760. }
  761. return 0;
  762. }
  763. int bootm_host_load_images(const void *fit, int cfg_noffset)
  764. {
  765. static uint8_t image_types[] = {
  766. IH_TYPE_KERNEL,
  767. IH_TYPE_FLATDT,
  768. IH_TYPE_RAMDISK,
  769. };
  770. int err = 0;
  771. int i;
  772. for (i = 0; i < ARRAY_SIZE(image_types); i++) {
  773. int ret;
  774. ret = bootm_host_load_image(fit, image_types[i], cfg_noffset);
  775. if (!err && ret && ret != -ENOENT)
  776. err = ret;
  777. }
  778. /* Return the first error we found */
  779. return err;
  780. }
  781. #endif
  782. #endif /* ndef USE_HOSTCC */