bootm.c 25 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. * @start: OS image start address
  197. * @size: OS image size
  198. *
  199. * boot_find_images() will attempt to load an available ramdisk,
  200. * flattened device tree, as well as specifically marked
  201. * "loadable" images (loadables are FIT only)
  202. *
  203. * Note: bootm_find_images will skip an image if it is not found
  204. *
  205. * @return:
  206. * 0, if all existing images were loaded correctly
  207. * 1, if an image is found but corrupted, or invalid
  208. */
  209. int bootm_find_images(int flag, int argc, char *const argv[], ulong start,
  210. ulong size)
  211. {
  212. int ret;
  213. /* find ramdisk */
  214. ret = boot_get_ramdisk(argc, argv, &images, IH_INITRD_ARCH,
  215. &images.rd_start, &images.rd_end);
  216. if (ret) {
  217. puts("Ramdisk image is corrupt or invalid\n");
  218. return 1;
  219. }
  220. /* check if ramdisk overlaps OS image */
  221. if (images.rd_start && (((ulong)images.rd_start >= start &&
  222. (ulong)images.rd_start <= start + size) ||
  223. ((ulong)images.rd_end >= start &&
  224. (ulong)images.rd_end <= start + size))) {
  225. printf("ERROR: RD image overlaps OS image (OS=0x%lx..0x%lx)\n",
  226. start, start + size);
  227. return 1;
  228. }
  229. #if IMAGE_ENABLE_OF_LIBFDT
  230. /* find flattened device tree */
  231. ret = boot_get_fdt(flag, argc, argv, IH_ARCH_DEFAULT, &images,
  232. &images.ft_addr, &images.ft_len);
  233. if (ret) {
  234. puts("Could not find a valid device tree\n");
  235. return 1;
  236. }
  237. /* check if FDT overlaps OS image */
  238. if (images.ft_addr &&
  239. (((ulong)images.ft_addr >= start &&
  240. (ulong)images.ft_addr <= start + size) ||
  241. ((ulong)images.ft_addr + images.ft_len >= start &&
  242. (ulong)images.ft_addr + images.ft_len <= start + size))) {
  243. printf("ERROR: FDT image overlaps OS image (OS=0x%lx..0x%lx)\n",
  244. start, start + size);
  245. return 1;
  246. }
  247. if (CONFIG_IS_ENABLED(CMD_FDT))
  248. set_working_fdt_addr(map_to_sysmem(images.ft_addr));
  249. #endif
  250. #if IMAGE_ENABLE_FIT
  251. #if defined(CONFIG_FPGA)
  252. /* find bitstreams */
  253. ret = boot_get_fpga(argc, argv, &images, IH_ARCH_DEFAULT,
  254. NULL, NULL);
  255. if (ret) {
  256. printf("FPGA image is corrupted or invalid\n");
  257. return 1;
  258. }
  259. #endif
  260. /* find all of the loadables */
  261. ret = boot_get_loadable(argc, argv, &images, IH_ARCH_DEFAULT,
  262. NULL, NULL);
  263. if (ret) {
  264. printf("Loadable(s) is corrupt or invalid\n");
  265. return 1;
  266. }
  267. #endif
  268. return 0;
  269. }
  270. static int bootm_find_other(struct cmd_tbl *cmdtp, int flag, int argc,
  271. char *const argv[])
  272. {
  273. if (((images.os.type == IH_TYPE_KERNEL) ||
  274. (images.os.type == IH_TYPE_KERNEL_NOLOAD) ||
  275. (images.os.type == IH_TYPE_MULTI)) &&
  276. (images.os.os == IH_OS_LINUX ||
  277. images.os.os == IH_OS_VXWORKS))
  278. return bootm_find_images(flag, argc, argv, 0, 0);
  279. return 0;
  280. }
  281. #endif /* USE_HOSTC */
  282. #if !defined(USE_HOSTCC) || defined(CONFIG_FIT_SIGNATURE)
  283. /**
  284. * handle_decomp_error() - display a decompression error
  285. *
  286. * This function tries to produce a useful message. In the case where the
  287. * uncompressed size is the same as the available space, we can assume that
  288. * the image is too large for the buffer.
  289. *
  290. * @comp_type: Compression type being used (IH_COMP_...)
  291. * @uncomp_size: Number of bytes uncompressed
  292. * @ret: errno error code received from compression library
  293. * @return Appropriate BOOTM_ERR_ error code
  294. */
  295. static int handle_decomp_error(int comp_type, size_t uncomp_size, int ret)
  296. {
  297. const char *name = genimg_get_comp_name(comp_type);
  298. /* ENOSYS means unimplemented compression type, don't reset. */
  299. if (ret == -ENOSYS)
  300. return BOOTM_ERR_UNIMPLEMENTED;
  301. if (uncomp_size >= CONFIG_SYS_BOOTM_LEN)
  302. printf("Image too large: increase CONFIG_SYS_BOOTM_LEN\n");
  303. else
  304. printf("%s: uncompress error %d\n", name, ret);
  305. /*
  306. * The decompression routines are now safe, so will not write beyond
  307. * their bounds. Probably it is not necessary to reset, but maintain
  308. * the current behaviour for now.
  309. */
  310. printf("Must RESET board to recover\n");
  311. #ifndef USE_HOSTCC
  312. bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
  313. #endif
  314. return BOOTM_ERR_RESET;
  315. }
  316. #endif
  317. #ifndef USE_HOSTCC
  318. static int bootm_load_os(bootm_headers_t *images, int boot_progress)
  319. {
  320. image_info_t os = images->os;
  321. ulong load = os.load;
  322. ulong load_end;
  323. ulong blob_start = os.start;
  324. ulong blob_end = os.end;
  325. ulong image_start = os.image_start;
  326. ulong image_len = os.image_len;
  327. ulong flush_start = ALIGN_DOWN(load, ARCH_DMA_MINALIGN);
  328. bool no_overlap;
  329. void *load_buf, *image_buf;
  330. int err;
  331. load_buf = map_sysmem(load, 0);
  332. image_buf = map_sysmem(os.image_start, image_len);
  333. err = image_decomp(os.comp, load, os.image_start, os.type,
  334. load_buf, image_buf, image_len,
  335. CONFIG_SYS_BOOTM_LEN, &load_end);
  336. if (err) {
  337. err = handle_decomp_error(os.comp, load_end - load, err);
  338. bootstage_error(BOOTSTAGE_ID_DECOMP_IMAGE);
  339. return err;
  340. }
  341. flush_cache(flush_start, ALIGN(load_end, ARCH_DMA_MINALIGN) - flush_start);
  342. debug(" kernel loaded at 0x%08lx, end = 0x%08lx\n", load, load_end);
  343. bootstage_mark(BOOTSTAGE_ID_KERNEL_LOADED);
  344. no_overlap = (os.comp == IH_COMP_NONE && load == image_start);
  345. if (!no_overlap && load < blob_end && load_end > blob_start) {
  346. debug("images.os.start = 0x%lX, images.os.end = 0x%lx\n",
  347. blob_start, blob_end);
  348. debug("images.os.load = 0x%lx, load_end = 0x%lx\n", load,
  349. load_end);
  350. /* Check what type of image this is. */
  351. if (images->legacy_hdr_valid) {
  352. if (image_get_type(&images->legacy_hdr_os_copy)
  353. == IH_TYPE_MULTI)
  354. puts("WARNING: legacy format multi component image overwritten\n");
  355. return BOOTM_ERR_OVERLAP;
  356. } else {
  357. puts("ERROR: new format image overwritten - must RESET the board to recover\n");
  358. bootstage_error(BOOTSTAGE_ID_OVERWRITTEN);
  359. return BOOTM_ERR_RESET;
  360. }
  361. }
  362. lmb_reserve(&images->lmb, images->os.load, (load_end -
  363. images->os.load));
  364. return 0;
  365. }
  366. /**
  367. * bootm_disable_interrupts() - Disable interrupts in preparation for load/boot
  368. *
  369. * @return interrupt flag (0 if interrupts were disabled, non-zero if they were
  370. * enabled)
  371. */
  372. ulong bootm_disable_interrupts(void)
  373. {
  374. ulong iflag;
  375. /*
  376. * We have reached the point of no return: we are going to
  377. * overwrite all exception vector code, so we cannot easily
  378. * recover from any failures any more...
  379. */
  380. iflag = disable_interrupts();
  381. #ifdef CONFIG_NETCONSOLE
  382. /* Stop the ethernet stack if NetConsole could have left it up */
  383. eth_halt();
  384. # ifndef CONFIG_DM_ETH
  385. eth_unregister(eth_get_dev());
  386. # endif
  387. #endif
  388. #if defined(CONFIG_CMD_USB)
  389. /*
  390. * turn off USB to prevent the host controller from writing to the
  391. * SDRAM while Linux is booting. This could happen (at least for OHCI
  392. * controller), because the HCCA (Host Controller Communication Area)
  393. * lies within the SDRAM and the host controller writes continously to
  394. * this area (as busmaster!). The HccaFrameNumber is for example
  395. * updated every 1 ms within the HCCA structure in SDRAM! For more
  396. * details see the OpenHCI specification.
  397. */
  398. usb_stop();
  399. #endif
  400. return iflag;
  401. }
  402. #if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY)
  403. #define CONSOLE_ARG "console="
  404. #define CONSOLE_ARG_LEN (sizeof(CONSOLE_ARG) - 1)
  405. static void fixup_silent_linux(void)
  406. {
  407. char *buf;
  408. const char *env_val;
  409. char *cmdline = env_get("bootargs");
  410. int want_silent;
  411. /*
  412. * Only fix cmdline when requested. The environment variable can be:
  413. *
  414. * no - we never fixup
  415. * yes - we always fixup
  416. * unset - we rely on the console silent flag
  417. */
  418. want_silent = env_get_yesno("silent_linux");
  419. if (want_silent == 0)
  420. return;
  421. else if (want_silent == -1 && !(gd->flags & GD_FLG_SILENT))
  422. return;
  423. debug("before silent fix-up: %s\n", cmdline);
  424. if (cmdline && (cmdline[0] != '\0')) {
  425. char *start = strstr(cmdline, CONSOLE_ARG);
  426. /* Allocate space for maximum possible new command line */
  427. buf = malloc(strlen(cmdline) + 1 + CONSOLE_ARG_LEN + 1);
  428. if (!buf) {
  429. debug("%s: out of memory\n", __func__);
  430. return;
  431. }
  432. if (start) {
  433. char *end = strchr(start, ' ');
  434. int num_start_bytes = start - cmdline + CONSOLE_ARG_LEN;
  435. strncpy(buf, cmdline, num_start_bytes);
  436. if (end)
  437. strcpy(buf + num_start_bytes, end);
  438. else
  439. buf[num_start_bytes] = '\0';
  440. } else {
  441. sprintf(buf, "%s %s", cmdline, CONSOLE_ARG);
  442. }
  443. env_val = buf;
  444. } else {
  445. buf = NULL;
  446. env_val = CONSOLE_ARG;
  447. }
  448. env_set("bootargs", env_val);
  449. debug("after silent fix-up: %s\n", env_val);
  450. free(buf);
  451. }
  452. #endif /* CONFIG_SILENT_CONSOLE */
  453. /**
  454. * Execute selected states of the bootm command.
  455. *
  456. * Note the arguments to this state must be the first argument, Any 'bootm'
  457. * or sub-command arguments must have already been taken.
  458. *
  459. * Note that if states contains more than one flag it MUST contain
  460. * BOOTM_STATE_START, since this handles and consumes the command line args.
  461. *
  462. * Also note that aside from boot_os_fn functions and bootm_load_os no other
  463. * functions we store the return value of in 'ret' may use a negative return
  464. * value, without special handling.
  465. *
  466. * @param cmdtp Pointer to bootm command table entry
  467. * @param flag Command flags (CMD_FLAG_...)
  468. * @param argc Number of subcommand arguments (0 = no arguments)
  469. * @param argv Arguments
  470. * @param states Mask containing states to run (BOOTM_STATE_...)
  471. * @param images Image header information
  472. * @param boot_progress 1 to show boot progress, 0 to not do this
  473. * @return 0 if ok, something else on error. Some errors will cause this
  474. * function to perform a reboot! If states contains BOOTM_STATE_OS_GO
  475. * then the intent is to boot an OS, so this function will not return
  476. * unless the image type is standalone.
  477. */
  478. int do_bootm_states(struct cmd_tbl *cmdtp, int flag, int argc,
  479. char *const argv[], int states, bootm_headers_t *images,
  480. int boot_progress)
  481. {
  482. boot_os_fn *boot_fn;
  483. ulong iflag = 0;
  484. int ret = 0, need_boot_fn;
  485. images->state |= states;
  486. /*
  487. * Work through the states and see how far we get. We stop on
  488. * any error.
  489. */
  490. if (states & BOOTM_STATE_START)
  491. ret = bootm_start(cmdtp, flag, argc, argv);
  492. if (!ret && (states & BOOTM_STATE_FINDOS))
  493. ret = bootm_find_os(cmdtp, flag, argc, argv);
  494. if (!ret && (states & BOOTM_STATE_FINDOTHER))
  495. ret = bootm_find_other(cmdtp, flag, argc, argv);
  496. /* Load the OS */
  497. if (!ret && (states & BOOTM_STATE_LOADOS)) {
  498. iflag = bootm_disable_interrupts();
  499. ret = bootm_load_os(images, 0);
  500. if (ret && ret != BOOTM_ERR_OVERLAP)
  501. goto err;
  502. else if (ret == BOOTM_ERR_OVERLAP)
  503. ret = 0;
  504. }
  505. /* Relocate the ramdisk */
  506. #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
  507. if (!ret && (states & BOOTM_STATE_RAMDISK)) {
  508. ulong rd_len = images->rd_end - images->rd_start;
  509. ret = boot_ramdisk_high(&images->lmb, images->rd_start,
  510. rd_len, &images->initrd_start, &images->initrd_end);
  511. if (!ret) {
  512. env_set_hex("initrd_start", images->initrd_start);
  513. env_set_hex("initrd_end", images->initrd_end);
  514. }
  515. }
  516. #endif
  517. #if IMAGE_ENABLE_OF_LIBFDT && defined(CONFIG_LMB)
  518. if (!ret && (states & BOOTM_STATE_FDT)) {
  519. boot_fdt_add_mem_rsv_regions(&images->lmb, images->ft_addr);
  520. ret = boot_relocate_fdt(&images->lmb, &images->ft_addr,
  521. &images->ft_len);
  522. }
  523. #endif
  524. /* From now on, we need the OS boot function */
  525. if (ret)
  526. return ret;
  527. boot_fn = bootm_os_get_boot_func(images->os.os);
  528. need_boot_fn = states & (BOOTM_STATE_OS_CMDLINE |
  529. BOOTM_STATE_OS_BD_T | BOOTM_STATE_OS_PREP |
  530. BOOTM_STATE_OS_FAKE_GO | BOOTM_STATE_OS_GO);
  531. if (boot_fn == NULL && need_boot_fn) {
  532. if (iflag)
  533. enable_interrupts();
  534. printf("ERROR: booting os '%s' (%d) is not supported\n",
  535. genimg_get_os_name(images->os.os), images->os.os);
  536. bootstage_error(BOOTSTAGE_ID_CHECK_BOOT_OS);
  537. return 1;
  538. }
  539. /* Call various other states that are not generally used */
  540. if (!ret && (states & BOOTM_STATE_OS_CMDLINE))
  541. ret = boot_fn(BOOTM_STATE_OS_CMDLINE, argc, argv, images);
  542. if (!ret && (states & BOOTM_STATE_OS_BD_T))
  543. ret = boot_fn(BOOTM_STATE_OS_BD_T, argc, argv, images);
  544. if (!ret && (states & BOOTM_STATE_OS_PREP)) {
  545. #if defined(CONFIG_SILENT_CONSOLE) && !defined(CONFIG_SILENT_U_BOOT_ONLY)
  546. if (images->os.os == IH_OS_LINUX)
  547. fixup_silent_linux();
  548. #endif
  549. ret = boot_fn(BOOTM_STATE_OS_PREP, argc, argv, images);
  550. }
  551. #ifdef CONFIG_TRACE
  552. /* Pretend to run the OS, then run a user command */
  553. if (!ret && (states & BOOTM_STATE_OS_FAKE_GO)) {
  554. char *cmd_list = env_get("fakegocmd");
  555. ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_FAKE_GO,
  556. images, boot_fn);
  557. if (!ret && cmd_list)
  558. ret = run_command_list(cmd_list, -1, flag);
  559. }
  560. #endif
  561. /* Check for unsupported subcommand. */
  562. if (ret) {
  563. puts("subcommand not supported\n");
  564. return ret;
  565. }
  566. /* Now run the OS! We hope this doesn't return */
  567. if (!ret && (states & BOOTM_STATE_OS_GO))
  568. ret = boot_selected_os(argc, argv, BOOTM_STATE_OS_GO,
  569. images, boot_fn);
  570. /* Deal with any fallout */
  571. err:
  572. if (iflag)
  573. enable_interrupts();
  574. if (ret == BOOTM_ERR_UNIMPLEMENTED)
  575. bootstage_error(BOOTSTAGE_ID_DECOMP_UNIMPL);
  576. else if (ret == BOOTM_ERR_RESET)
  577. do_reset(cmdtp, flag, argc, argv);
  578. return ret;
  579. }
  580. #if CONFIG_IS_ENABLED(LEGACY_IMAGE_FORMAT)
  581. /**
  582. * image_get_kernel - verify legacy format kernel image
  583. * @img_addr: in RAM address of the legacy format image to be verified
  584. * @verify: data CRC verification flag
  585. *
  586. * image_get_kernel() verifies legacy image integrity and returns pointer to
  587. * legacy image header if image verification was completed successfully.
  588. *
  589. * returns:
  590. * pointer to a legacy image header if valid image was found
  591. * otherwise return NULL
  592. */
  593. static image_header_t *image_get_kernel(ulong img_addr, int verify)
  594. {
  595. image_header_t *hdr = (image_header_t *)img_addr;
  596. if (!image_check_magic(hdr)) {
  597. puts("Bad Magic Number\n");
  598. bootstage_error(BOOTSTAGE_ID_CHECK_MAGIC);
  599. return NULL;
  600. }
  601. bootstage_mark(BOOTSTAGE_ID_CHECK_HEADER);
  602. if (!image_check_hcrc(hdr)) {
  603. puts("Bad Header Checksum\n");
  604. bootstage_error(BOOTSTAGE_ID_CHECK_HEADER);
  605. return NULL;
  606. }
  607. bootstage_mark(BOOTSTAGE_ID_CHECK_CHECKSUM);
  608. image_print_contents(hdr);
  609. if (verify) {
  610. puts(" Verifying Checksum ... ");
  611. if (!image_check_dcrc(hdr)) {
  612. printf("Bad Data CRC\n");
  613. bootstage_error(BOOTSTAGE_ID_CHECK_CHECKSUM);
  614. return NULL;
  615. }
  616. puts("OK\n");
  617. }
  618. bootstage_mark(BOOTSTAGE_ID_CHECK_ARCH);
  619. if (!image_check_target_arch(hdr)) {
  620. printf("Unsupported Architecture 0x%x\n", image_get_arch(hdr));
  621. bootstage_error(BOOTSTAGE_ID_CHECK_ARCH);
  622. return NULL;
  623. }
  624. return hdr;
  625. }
  626. #endif
  627. /**
  628. * boot_get_kernel - find kernel image
  629. * @os_data: pointer to a ulong variable, will hold os data start address
  630. * @os_len: pointer to a ulong variable, will hold os data length
  631. *
  632. * boot_get_kernel() tries to find a kernel image, verifies its integrity
  633. * and locates kernel data.
  634. *
  635. * returns:
  636. * pointer to image header if valid image was found, plus kernel start
  637. * address and length, otherwise NULL
  638. */
  639. static const void *boot_get_kernel(struct cmd_tbl *cmdtp, int flag, int argc,
  640. char *const argv[], bootm_headers_t *images,
  641. ulong *os_data, ulong *os_len)
  642. {
  643. #if CONFIG_IS_ENABLED(LEGACY_IMAGE_FORMAT)
  644. image_header_t *hdr;
  645. #endif
  646. ulong img_addr;
  647. const void *buf;
  648. const char *fit_uname_config = NULL;
  649. const char *fit_uname_kernel = NULL;
  650. #if IMAGE_ENABLE_FIT
  651. int os_noffset;
  652. #endif
  653. img_addr = genimg_get_kernel_addr_fit(argc < 1 ? NULL : argv[0],
  654. &fit_uname_config,
  655. &fit_uname_kernel);
  656. bootstage_mark(BOOTSTAGE_ID_CHECK_MAGIC);
  657. /* check image type, for FIT images get FIT kernel node */
  658. *os_data = *os_len = 0;
  659. buf = map_sysmem(img_addr, 0);
  660. switch (genimg_get_format(buf)) {
  661. #if CONFIG_IS_ENABLED(LEGACY_IMAGE_FORMAT)
  662. case IMAGE_FORMAT_LEGACY:
  663. printf("## Booting kernel from Legacy Image at %08lx ...\n",
  664. img_addr);
  665. hdr = image_get_kernel(img_addr, images->verify);
  666. if (!hdr)
  667. return NULL;
  668. bootstage_mark(BOOTSTAGE_ID_CHECK_IMAGETYPE);
  669. /* get os_data and os_len */
  670. switch (image_get_type(hdr)) {
  671. case IH_TYPE_KERNEL:
  672. case IH_TYPE_KERNEL_NOLOAD:
  673. *os_data = image_get_data(hdr);
  674. *os_len = image_get_data_size(hdr);
  675. break;
  676. case IH_TYPE_MULTI:
  677. image_multi_getimg(hdr, 0, os_data, os_len);
  678. break;
  679. case IH_TYPE_STANDALONE:
  680. *os_data = image_get_data(hdr);
  681. *os_len = image_get_data_size(hdr);
  682. break;
  683. default:
  684. printf("Wrong Image Type for %s command\n",
  685. cmdtp->name);
  686. bootstage_error(BOOTSTAGE_ID_CHECK_IMAGETYPE);
  687. return NULL;
  688. }
  689. /*
  690. * copy image header to allow for image overwrites during
  691. * kernel decompression.
  692. */
  693. memmove(&images->legacy_hdr_os_copy, hdr,
  694. sizeof(image_header_t));
  695. /* save pointer to image header */
  696. images->legacy_hdr_os = hdr;
  697. images->legacy_hdr_valid = 1;
  698. bootstage_mark(BOOTSTAGE_ID_DECOMP_IMAGE);
  699. break;
  700. #endif
  701. #if IMAGE_ENABLE_FIT
  702. case IMAGE_FORMAT_FIT:
  703. os_noffset = fit_image_load(images, img_addr,
  704. &fit_uname_kernel, &fit_uname_config,
  705. IH_ARCH_DEFAULT, IH_TYPE_KERNEL,
  706. BOOTSTAGE_ID_FIT_KERNEL_START,
  707. FIT_LOAD_IGNORED, os_data, os_len);
  708. if (os_noffset < 0)
  709. return NULL;
  710. images->fit_hdr_os = map_sysmem(img_addr, 0);
  711. images->fit_uname_os = fit_uname_kernel;
  712. images->fit_uname_cfg = fit_uname_config;
  713. images->fit_noffset_os = os_noffset;
  714. break;
  715. #endif
  716. #ifdef CONFIG_ANDROID_BOOT_IMAGE
  717. case IMAGE_FORMAT_ANDROID:
  718. printf("## Booting Android Image at 0x%08lx ...\n", img_addr);
  719. if (android_image_get_kernel(buf, images->verify,
  720. os_data, os_len))
  721. return NULL;
  722. break;
  723. #endif
  724. default:
  725. printf("Wrong Image Format for %s command\n", cmdtp->name);
  726. bootstage_error(BOOTSTAGE_ID_FIT_KERNEL_INFO);
  727. return NULL;
  728. }
  729. debug(" kernel data at 0x%08lx, len = 0x%08lx (%ld)\n",
  730. *os_data, *os_len, *os_len);
  731. return buf;
  732. }
  733. /**
  734. * switch_to_non_secure_mode() - switch to non-secure mode
  735. *
  736. * This routine is overridden by architectures requiring this feature.
  737. */
  738. void __weak switch_to_non_secure_mode(void)
  739. {
  740. }
  741. #else /* USE_HOSTCC */
  742. #if defined(CONFIG_FIT_SIGNATURE)
  743. static int bootm_host_load_image(const void *fit, int req_image_type,
  744. int cfg_noffset)
  745. {
  746. const char *fit_uname_config = NULL;
  747. ulong data, len;
  748. bootm_headers_t images;
  749. int noffset;
  750. ulong load_end;
  751. uint8_t image_type;
  752. uint8_t imape_comp;
  753. void *load_buf;
  754. int ret;
  755. fit_uname_config = fdt_get_name(fit, cfg_noffset, NULL);
  756. memset(&images, '\0', sizeof(images));
  757. images.verify = 1;
  758. noffset = fit_image_load(&images, (ulong)fit,
  759. NULL, &fit_uname_config,
  760. IH_ARCH_DEFAULT, req_image_type, -1,
  761. FIT_LOAD_IGNORED, &data, &len);
  762. if (noffset < 0)
  763. return noffset;
  764. if (fit_image_get_type(fit, noffset, &image_type)) {
  765. puts("Can't get image type!\n");
  766. return -EINVAL;
  767. }
  768. if (fit_image_get_comp(fit, noffset, &imape_comp)) {
  769. puts("Can't get image compression!\n");
  770. return -EINVAL;
  771. }
  772. /* Allow the image to expand by a factor of 4, should be safe */
  773. load_buf = malloc((1 << 20) + len * 4);
  774. ret = image_decomp(imape_comp, 0, data, image_type, load_buf,
  775. (void *)data, len, CONFIG_SYS_BOOTM_LEN,
  776. &load_end);
  777. free(load_buf);
  778. if (ret) {
  779. ret = handle_decomp_error(imape_comp, load_end - 0, ret);
  780. if (ret != BOOTM_ERR_UNIMPLEMENTED)
  781. return ret;
  782. }
  783. return 0;
  784. }
  785. int bootm_host_load_images(const void *fit, int cfg_noffset)
  786. {
  787. static uint8_t image_types[] = {
  788. IH_TYPE_KERNEL,
  789. IH_TYPE_FLATDT,
  790. IH_TYPE_RAMDISK,
  791. };
  792. int err = 0;
  793. int i;
  794. for (i = 0; i < ARRAY_SIZE(image_types); i++) {
  795. int ret;
  796. ret = bootm_host_load_image(fit, image_types[i], cfg_noffset);
  797. if (!err && ret && ret != -ENOENT)
  798. err = ret;
  799. }
  800. /* Return the first error we found */
  801. return err;
  802. }
  803. #endif
  804. #endif /* ndef USE_HOSTCC */