spl.h 24 KB

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  1. /* SPDX-License-Identifier: GPL-2.0+ */
  2. /*
  3. * (C) Copyright 2012
  4. * Texas Instruments, <www.ti.com>
  5. */
  6. #ifndef _SPL_H_
  7. #define _SPL_H_
  8. #include <binman_sym.h>
  9. #include <linker_lists.h>
  10. /* Platform-specific defines */
  11. #include <linux/compiler.h>
  12. #include <asm/global_data.h>
  13. #include <asm/spl.h>
  14. #include <handoff.h>
  15. struct blk_desc;
  16. struct image_header;
  17. /* Value in r0 indicates we booted from U-Boot */
  18. #define UBOOT_NOT_LOADED_FROM_SPL 0x13578642
  19. /* Boot type */
  20. #define MMCSD_MODE_UNDEFINED 0
  21. #define MMCSD_MODE_RAW 1
  22. #define MMCSD_MODE_FS 2
  23. #define MMCSD_MODE_EMMCBOOT 3
  24. struct blk_desc;
  25. struct image_header;
  26. /*
  27. * u_boot_first_phase() - check if this is the first U-Boot phase
  28. *
  29. * U-Boot has up to three phases: TPL, SPL and U-Boot proper. Depending on the
  30. * build flags we can determine whether the current build is for the first
  31. * phase of U-Boot or not. If there is no SPL, then this is U-Boot proper. If
  32. * there is SPL but no TPL, the the first phase is SPL. If there is TPL, then
  33. * it is the first phase.
  34. *
  35. * @returns true if this is the first phase of U-Boot
  36. *
  37. */
  38. static inline bool u_boot_first_phase(void)
  39. {
  40. if (IS_ENABLED(CONFIG_TPL)) {
  41. if (IS_ENABLED(CONFIG_TPL_BUILD))
  42. return true;
  43. } else if (IS_ENABLED(CONFIG_SPL)) {
  44. if (IS_ENABLED(CONFIG_SPL_BUILD))
  45. return true;
  46. } else {
  47. return true;
  48. }
  49. return false;
  50. }
  51. enum u_boot_phase {
  52. PHASE_NONE, /* Invalid phase, signifying before U-Boot */
  53. PHASE_TPL, /* Running in TPL */
  54. PHASE_SPL, /* Running in SPL */
  55. PHASE_BOARD_F, /* Running in U-Boot before relocation */
  56. PHASE_BOARD_R, /* Running in U-Boot after relocation */
  57. };
  58. /**
  59. * spl_phase() - Find out the phase of U-Boot
  60. *
  61. * This can be used to avoid #ifdef logic and use if() instead.
  62. *
  63. * For example, to include code only in TPL, you might do:
  64. *
  65. * #ifdef CONFIG_TPL_BUILD
  66. * ...
  67. * #endif
  68. *
  69. * but with this you can use:
  70. *
  71. * if (spl_phase() == PHASE_TPL) {
  72. * ...
  73. * }
  74. *
  75. * To include code only in SPL, you might do:
  76. *
  77. * #if defined(CONFIG_SPL_BUILD) && !defined(CONFIG_TPL_BUILD)
  78. * ...
  79. * #endif
  80. *
  81. * but with this you can use:
  82. *
  83. * if (spl_phase() == PHASE_SPL) {
  84. * ...
  85. * }
  86. *
  87. * To include code only in U-Boot proper, you might do:
  88. *
  89. * #ifndef CONFIG_SPL_BUILD
  90. * ...
  91. * #endif
  92. *
  93. * but with this you can use:
  94. *
  95. * if (spl_phase() == PHASE_BOARD_F) {
  96. * ...
  97. * }
  98. *
  99. * @return U-Boot phase
  100. */
  101. static inline enum u_boot_phase spl_phase(void)
  102. {
  103. #ifdef CONFIG_TPL_BUILD
  104. return PHASE_TPL;
  105. #elif CONFIG_SPL_BUILD
  106. return PHASE_SPL;
  107. #else
  108. DECLARE_GLOBAL_DATA_PTR;
  109. if (!(gd->flags & GD_FLG_RELOC))
  110. return PHASE_BOARD_F;
  111. else
  112. return PHASE_BOARD_R;
  113. #endif
  114. }
  115. /**
  116. * spl_prev_phase() - Figure out the previous U-Boot phase
  117. *
  118. * @return the previous phase from this one, e.g. if called in SPL this returns
  119. * PHASE_TPL, if TPL is enabled
  120. */
  121. static inline enum u_boot_phase spl_prev_phase(void)
  122. {
  123. #ifdef CONFIG_TPL_BUILD
  124. return PHASE_NONE;
  125. #elif defined(CONFIG_SPL_BUILD)
  126. return IS_ENABLED(CONFIG_TPL) ? PHASE_TPL : PHASE_NONE;
  127. #else
  128. return IS_ENABLED(CONFIG_SPL) ? PHASE_SPL : PHASE_NONE;
  129. #endif
  130. }
  131. /**
  132. * spl_next_phase() - Figure out the next U-Boot phase
  133. *
  134. * @return the next phase from this one, e.g. if called in TPL this returns
  135. * PHASE_SPL
  136. */
  137. static inline enum u_boot_phase spl_next_phase(void)
  138. {
  139. #ifdef CONFIG_TPL_BUILD
  140. return PHASE_SPL;
  141. #else
  142. return PHASE_BOARD_F;
  143. #endif
  144. }
  145. /**
  146. * spl_phase_name() - Get the name of the current phase
  147. *
  148. * @return phase name
  149. */
  150. static inline const char *spl_phase_name(enum u_boot_phase phase)
  151. {
  152. switch (phase) {
  153. case PHASE_TPL:
  154. return "TPL";
  155. case PHASE_SPL:
  156. return "SPL";
  157. case PHASE_BOARD_F:
  158. case PHASE_BOARD_R:
  159. return "U-Boot";
  160. default:
  161. return "phase?";
  162. }
  163. }
  164. /**
  165. * spl_phase_prefix() - Get the prefix of the current phase
  166. *
  167. * @phase: Phase to look up
  168. * @return phase prefix ("spl", "tpl", etc.)
  169. */
  170. static inline const char *spl_phase_prefix(enum u_boot_phase phase)
  171. {
  172. switch (phase) {
  173. case PHASE_TPL:
  174. return "tpl";
  175. case PHASE_SPL:
  176. return "spl";
  177. case PHASE_BOARD_F:
  178. case PHASE_BOARD_R:
  179. return "";
  180. default:
  181. return "phase?";
  182. }
  183. }
  184. /* A string name for SPL or TPL */
  185. #ifdef CONFIG_SPL_BUILD
  186. # ifdef CONFIG_TPL_BUILD
  187. # define SPL_TPL_NAME "TPL"
  188. # else
  189. # define SPL_TPL_NAME "SPL"
  190. # endif
  191. # define SPL_TPL_PROMPT SPL_TPL_NAME ": "
  192. #else
  193. # define SPL_TPL_NAME ""
  194. # define SPL_TPL_PROMPT ""
  195. #endif
  196. struct spl_image_info {
  197. const char *name;
  198. u8 os;
  199. uintptr_t load_addr;
  200. uintptr_t entry_point;
  201. #if CONFIG_IS_ENABLED(LOAD_FIT) || CONFIG_IS_ENABLED(LOAD_FIT_FULL)
  202. void *fdt_addr;
  203. #endif
  204. u32 boot_device;
  205. u32 size;
  206. u32 flags;
  207. void *arg;
  208. #ifdef CONFIG_SPL_LEGACY_IMAGE_CRC_CHECK
  209. ulong dcrc_data;
  210. ulong dcrc_length;
  211. ulong dcrc;
  212. #endif
  213. };
  214. /**
  215. * Information required to load data from a device
  216. *
  217. * @dev: Pointer to the device, e.g. struct mmc *
  218. * @priv: Private data for the device
  219. * @bl_len: Block length for reading in bytes
  220. * @filename: Name of the fit image file.
  221. * @read: Function to call to read from the device
  222. */
  223. struct spl_load_info {
  224. void *dev;
  225. void *priv;
  226. int bl_len;
  227. const char *filename;
  228. /**
  229. * read() - Read from device
  230. *
  231. * @load: Information about the load state
  232. * @sector: Sector number to read from (each @load->bl_len bytes)
  233. * @count: Number of sectors to read
  234. * @buf: Buffer to read into
  235. * @return number of sectors read, 0 on error
  236. */
  237. ulong (*read)(struct spl_load_info *load, ulong sector, ulong count,
  238. void *buf);
  239. };
  240. /*
  241. * We need to know the position of U-Boot in memory so we can jump to it. We
  242. * allow any U-Boot binary to be used (u-boot.bin, u-boot-nodtb.bin,
  243. * u-boot.img), hence the '_any'. These is no checking here that the correct
  244. * image is found. For example if u-boot.img is used we don't check that
  245. * spl_parse_image_header() can parse a valid header.
  246. *
  247. * Similarly for SPL, so that TPL can jump to SPL.
  248. */
  249. binman_sym_extern(ulong, u_boot_any, image_pos);
  250. binman_sym_extern(ulong, u_boot_any, size);
  251. binman_sym_extern(ulong, spl, image_pos);
  252. binman_sym_extern(ulong, spl, size);
  253. /**
  254. * spl_get_image_pos() - get the image position of the next phase
  255. *
  256. * This returns the image position to use to load the next phase of U-Boot
  257. */
  258. ulong spl_get_image_pos(void);
  259. /**
  260. * spl_get_image_size() - get the size of the next phase
  261. *
  262. * This returns the size to use to load the next phase of U-Boot
  263. */
  264. ulong spl_get_image_size(void);
  265. /**
  266. * spl_get_image_text_base() - get the text base of the next phase
  267. *
  268. * This returns the address that the next stage is linked to run at, i.e.
  269. * CONFIG_SPL_TEXT_BASE or CONFIG_SYS_TEXT_BASE
  270. *
  271. * @return text-base address
  272. */
  273. ulong spl_get_image_text_base(void);
  274. /**
  275. * spl_load_simple_fit_skip_processing() - Hook to allow skipping the FIT
  276. * image processing during spl_load_simple_fit().
  277. *
  278. * Return true to skip FIT processing, false to preserve the full code flow
  279. * of spl_load_simple_fit().
  280. */
  281. bool spl_load_simple_fit_skip_processing(void);
  282. /**
  283. * spl_load_simple_fit() - Loads a fit image from a device.
  284. * @spl_image: Image description to set up
  285. * @info: Structure containing the information required to load data.
  286. * @sector: Sector number where FIT image is located in the device
  287. * @fdt: Pointer to the copied FIT header.
  288. *
  289. * Reads the FIT image @sector in the device. Loads u-boot image to
  290. * specified load address and copies the dtb to end of u-boot image.
  291. * Returns 0 on success.
  292. */
  293. int spl_load_simple_fit(struct spl_image_info *spl_image,
  294. struct spl_load_info *info, ulong sector, void *fdt);
  295. #define SPL_COPY_PAYLOAD_ONLY 1
  296. #define SPL_FIT_FOUND 2
  297. /**
  298. * spl_load_legacy_img() - Loads a legacy image from a device.
  299. * @spl_image: Image description to set up
  300. * @load: Structure containing the information required to load data.
  301. * @header: Pointer to image header (including appended image)
  302. *
  303. * Reads an legacy image from the device. Loads u-boot image to
  304. * specified load address.
  305. * Returns 0 on success.
  306. */
  307. int spl_load_legacy_img(struct spl_image_info *spl_image,
  308. struct spl_load_info *load, ulong header);
  309. /**
  310. * spl_load_imx_container() - Loads a imx container image from a device.
  311. * @spl_image: Image description to set up
  312. * @info: Structure containing the information required to load data.
  313. * @sector: Sector number where container image is located in the device
  314. *
  315. * Reads the container image @sector in the device. Loads u-boot image to
  316. * specified load address.
  317. */
  318. int spl_load_imx_container(struct spl_image_info *spl_image,
  319. struct spl_load_info *info, ulong sector);
  320. /* SPL common functions */
  321. void preloader_console_init(void);
  322. u32 spl_boot_device(void);
  323. /**
  324. * spl_mmc_boot_mode() - Lookup function for the mode of an MMC boot source.
  325. * @boot_device: ID of the device which the MMC driver wants to read
  326. * from. Common values are e.g. BOOT_DEVICE_MMC1,
  327. * BOOT_DEVICE_MMC2, BOOT_DEVICE_MMC2_2.
  328. *
  329. * This function should return one of MMCSD_MODE_FS, MMCSD_MODE_EMMCBOOT, or
  330. * MMCSD_MODE_RAW for each MMC boot source which is defined for the target. The
  331. * boot_device parameter tells which device the MMC driver is interested in.
  332. *
  333. * If not overridden, it is weakly defined in common/spl/spl_mmc.c.
  334. *
  335. * Note: It is important to use the boot_device parameter instead of e.g.
  336. * spl_boot_device() as U-Boot is not always loaded from the same device as SPL.
  337. */
  338. u32 spl_mmc_boot_mode(const u32 boot_device);
  339. /**
  340. * spl_mmc_boot_partition() - MMC partition to load U-Boot from.
  341. * @boot_device: ID of the device which the MMC driver wants to load
  342. * U-Boot from.
  343. *
  344. * This function should return the partition number which the SPL
  345. * should load U-Boot from (on the given boot_device) when
  346. * CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION is set.
  347. *
  348. * If not overridden, it is weakly defined in common/spl/spl_mmc.c.
  349. */
  350. int spl_mmc_boot_partition(const u32 boot_device);
  351. struct mmc;
  352. /**
  353. * default_spl_mmc_emmc_boot_partition() - eMMC boot partition to load U-Boot from.
  354. * mmc: Pointer for the mmc device structure
  355. *
  356. * This function should return the eMMC boot partition number which
  357. * the SPL should load U-Boot from (on the given boot_device).
  358. */
  359. int default_spl_mmc_emmc_boot_partition(struct mmc *mmc);
  360. /**
  361. * spl_mmc_emmc_boot_partition() - eMMC boot partition to load U-Boot from.
  362. * mmc: Pointer for the mmc device structure
  363. *
  364. * This function should return the eMMC boot partition number which
  365. * the SPL should load U-Boot from (on the given boot_device).
  366. *
  367. * If not overridden, it is weakly defined in common/spl/spl_mmc.c
  368. * and calls default_spl_mmc_emmc_boot_partition();
  369. */
  370. int spl_mmc_emmc_boot_partition(struct mmc *mmc);
  371. void spl_set_bd(void);
  372. /**
  373. * spl_set_header_raw_uboot() - Set up a standard SPL image structure
  374. *
  375. * This sets up the given spl_image which the standard values obtained from
  376. * config options: CONFIG_SYS_MONITOR_LEN, CONFIG_SYS_UBOOT_START,
  377. * CONFIG_SYS_TEXT_BASE.
  378. *
  379. * @spl_image: Image description to set up
  380. */
  381. void spl_set_header_raw_uboot(struct spl_image_info *spl_image);
  382. /**
  383. * spl_parse_image_header() - parse the image header and set up info
  384. *
  385. * This parses the legacy image header information at @header and sets up
  386. * @spl_image according to what is found. If no image header is found, then
  387. * a raw image or bootz is assumed. If CONFIG_SPL_PANIC_ON_RAW_IMAGE is
  388. * enabled, then this causes a panic. If CONFIG_SPL_RAW_IMAGE_SUPPORT is not
  389. * enabled then U-Boot gives up. Otherwise U-Boot sets up the image using
  390. * spl_set_header_raw_uboot(), or possibly the bootz header.
  391. *
  392. * @spl_image: Image description to set up
  393. * @header image header to parse
  394. * @return 0 if a header was correctly parsed, -ve on error
  395. */
  396. int spl_parse_image_header(struct spl_image_info *spl_image,
  397. const struct image_header *header);
  398. void spl_board_prepare_for_linux(void);
  399. /**
  400. * spl_board_prepare_for_optee() - Prepare board for an OPTEE payload
  401. *
  402. * Prepares the board for booting an OP-TEE payload. Initialization is platform
  403. * specific, and may include configuring the TrustZone memory, and other
  404. * initialization steps required by OP-TEE.
  405. * Note that @fdt is not used directly by OP-TEE. OP-TEE passes this @fdt to
  406. * its normal world target. This target is not guaranteed to be u-boot, so @fdt
  407. * changes that would normally be done by u-boot should be done in this step.
  408. *
  409. * @fdt: Devicetree that will be passed on, or NULL
  410. */
  411. void spl_board_prepare_for_optee(void *fdt);
  412. void spl_board_prepare_for_boot(void);
  413. int spl_board_ubi_load_image(u32 boot_device);
  414. int spl_board_boot_device(u32 boot_device);
  415. /**
  416. * jump_to_image_linux() - Jump to a Linux kernel from SPL
  417. *
  418. * This jumps into a Linux kernel using the information in @spl_image.
  419. *
  420. * @spl_image: Image description to set up
  421. */
  422. void __noreturn jump_to_image_linux(struct spl_image_info *spl_image);
  423. /**
  424. * spl_start_uboot() - Check if SPL should start the kernel or U-Boot
  425. *
  426. * This is called by the various SPL loaders to determine whether the board
  427. * wants to load the kernel or U-Boot. This function should be provided by
  428. * the board.
  429. *
  430. * @return 0 if SPL should start the kernel, 1 if U-Boot must be started
  431. */
  432. int spl_start_uboot(void);
  433. /**
  434. * spl_display_print() - Display a board-specific message in SPL
  435. *
  436. * If CONFIG_SPL_DISPLAY_PRINT is enabled, U-Boot will call this function
  437. * immediately after displaying the SPL console banner ("U-Boot SPL ...").
  438. * This function should be provided by the board.
  439. */
  440. void spl_display_print(void);
  441. /**
  442. * struct spl_boot_device - Describes a boot device used by SPL
  443. *
  444. * @boot_device: A number indicating the BOOT_DEVICE type. There are various
  445. * BOOT_DEVICE... #defines and enums in U-Boot and they are not consistently
  446. * numbered.
  447. * @boot_device_name: Named boot device, or NULL if none.
  448. *
  449. * Note: Additional fields can be added here, bearing in mind that SPL is
  450. * size-sensitive and common fields will be present on all boards. This
  451. * struct can also be used to return additional information about the load
  452. * process if that becomes useful.
  453. */
  454. struct spl_boot_device {
  455. uint boot_device;
  456. const char *boot_device_name;
  457. };
  458. /**
  459. * Holds information about a way of loading an SPL image
  460. *
  461. * @name: User-friendly name for this method (e.g. "MMC")
  462. * @boot_device: Boot device that this loader supports
  463. * @load_image: Function to call to load image
  464. */
  465. struct spl_image_loader {
  466. #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
  467. const char *name;
  468. #endif
  469. uint boot_device;
  470. /**
  471. * load_image() - Load an SPL image
  472. *
  473. * @spl_image: place to put image information
  474. * @bootdev: describes the boot device to load from
  475. */
  476. int (*load_image)(struct spl_image_info *spl_image,
  477. struct spl_boot_device *bootdev);
  478. };
  479. /* Helper function for accessing the name */
  480. static inline const char *spl_loader_name(const struct spl_image_loader *loader)
  481. {
  482. #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
  483. return loader->name;
  484. #else
  485. return NULL;
  486. #endif
  487. }
  488. /* Declare an SPL image loader */
  489. #define SPL_LOAD_IMAGE(__name) \
  490. ll_entry_declare(struct spl_image_loader, __name, spl_image_loader)
  491. /*
  492. * _priority is the priority of this method, 0 meaning it will be the top
  493. * choice for this device, 9 meaning it is the bottom choice.
  494. * _boot_device is the BOOT_DEVICE_... value
  495. * _method is the load_image function to call
  496. */
  497. #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
  498. #define SPL_LOAD_IMAGE_METHOD(_name, _priority, _boot_device, _method) \
  499. SPL_LOAD_IMAGE(_boot_device ## _priority ## _method) = { \
  500. .name = _name, \
  501. .boot_device = _boot_device, \
  502. .load_image = _method, \
  503. }
  504. #else
  505. #define SPL_LOAD_IMAGE_METHOD(_name, _priority, _boot_device, _method) \
  506. SPL_LOAD_IMAGE(_boot_device ## _priority ## _method) = { \
  507. .boot_device = _boot_device, \
  508. .load_image = _method, \
  509. }
  510. #endif
  511. /* SPL FAT image functions */
  512. int spl_load_image_fat(struct spl_image_info *spl_image,
  513. struct blk_desc *block_dev, int partition,
  514. const char *filename);
  515. int spl_load_image_fat_os(struct spl_image_info *spl_image,
  516. struct blk_desc *block_dev, int partition);
  517. void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image);
  518. /* SPL EXT image functions */
  519. int spl_load_image_ext(struct spl_image_info *spl_image,
  520. struct blk_desc *block_dev, int partition,
  521. const char *filename);
  522. int spl_load_image_ext_os(struct spl_image_info *spl_image,
  523. struct blk_desc *block_dev, int partition);
  524. /**
  525. * spl_early_init() - Set up device tree and driver model in SPL if enabled
  526. *
  527. * Call this function in board_init_f() if you want to use device tree and
  528. * driver model early, before board_init_r() is called.
  529. *
  530. * If this is not called, then driver model will be inactive in SPL's
  531. * board_init_f(), and no device tree will be available.
  532. */
  533. int spl_early_init(void);
  534. /**
  535. * spl_init() - Set up device tree and driver model in SPL if enabled
  536. *
  537. * You can optionally call spl_early_init(), then optionally call spl_init().
  538. * This function will be called from board_init_r() if not called earlier.
  539. *
  540. * Both spl_early_init() and spl_init() perform a similar function except that
  541. * the latter will not set up the malloc() area if
  542. * CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN is enabled, since it is assumed to
  543. * already be done by a calll to spl_relocate_stack_gd() before board_init_r()
  544. * is reached.
  545. *
  546. * This function will be called from board_init_r() if not called earlier.
  547. *
  548. * If this is not called, then driver model will be inactive in SPL's
  549. * board_init_f(), and no device tree will be available.
  550. */
  551. int spl_init(void);
  552. #ifdef CONFIG_SPL_BOARD_INIT
  553. void spl_board_init(void);
  554. #endif
  555. /**
  556. * spl_was_boot_source() - check if U-Boot booted from SPL
  557. *
  558. * This will normally be true, but if U-Boot jumps to second U-Boot, it will
  559. * be false. This should be implemented by board-specific code.
  560. *
  561. * @return true if U-Boot booted from SPL, else false
  562. */
  563. bool spl_was_boot_source(void);
  564. /**
  565. * spl_dfu_cmd- run dfu command with chosen mmc device interface
  566. * @param usb_index - usb controller number
  567. * @param mmc_dev - mmc device nubmer
  568. *
  569. * @return 0 on success, otherwise error code
  570. */
  571. int spl_dfu_cmd(int usbctrl, char *dfu_alt_info, char *interface, char *devstr);
  572. int spl_mmc_load_image(struct spl_image_info *spl_image,
  573. struct spl_boot_device *bootdev);
  574. /**
  575. * spl_mmc_load() - Load an image file from MMC/SD media
  576. *
  577. * @param spl_image Image data filled in by loading process
  578. * @param bootdev Describes which device to load from
  579. * @param filename Name of file to load (in FS mode)
  580. * @param raw_part Partition to load from (in RAW mode)
  581. * @param raw_sect Sector to load from (in RAW mode)
  582. *
  583. * @return 0 on success, otherwise error code
  584. */
  585. int spl_mmc_load(struct spl_image_info *spl_image,
  586. struct spl_boot_device *bootdev,
  587. const char *filename,
  588. int raw_part,
  589. unsigned long raw_sect);
  590. /**
  591. * spl_usb_load() - Load an image file from USB mass storage
  592. *
  593. * @param spl_image Image data filled in by loading process
  594. * @param bootdev Describes which device to load from
  595. * @param raw_part Fat partition to load from
  596. * @param filename Name of file to load
  597. *
  598. * @return 0 on success, otherwise error code
  599. */
  600. int spl_usb_load(struct spl_image_info *spl_image,
  601. struct spl_boot_device *bootdev,
  602. int partition, const char *filename);
  603. int spl_ymodem_load_image(struct spl_image_info *spl_image,
  604. struct spl_boot_device *bootdev);
  605. /**
  606. * spl_invoke_atf - boot using an ARM trusted firmware image
  607. */
  608. void spl_invoke_atf(struct spl_image_info *spl_image);
  609. /**
  610. * bl2_plat_get_bl31_params() - return params for bl31.
  611. * @bl32_entry: address of BL32 executable (secure)
  612. * @bl33_entry: address of BL33 executable (non secure)
  613. * @fdt_addr: address of Flat Device Tree
  614. *
  615. * This is a weak function which might be overridden by the board code. By
  616. * default it will just call bl2_plat_get_bl31_params_default().
  617. *
  618. * If you just want to manipulate or add some parameters, you can override
  619. * this function, call bl2_plat_get_bl31_params_default and operate on the
  620. * returned bl31 params.
  621. *
  622. * Return: bl31 params structure pointer
  623. */
  624. struct bl31_params *bl2_plat_get_bl31_params(uintptr_t bl32_entry,
  625. uintptr_t bl33_entry,
  626. uintptr_t fdt_addr);
  627. /**
  628. * bl2_plat_get_bl31_params_default() - prepare params for bl31.
  629. * @bl32_entry: address of BL32 executable (secure)
  630. * @bl33_entry: address of BL33 executable (non secure)
  631. * @fdt_addr: address of Flat Device Tree
  632. *
  633. * This is the default implementation of bl2_plat_get_bl31_params(). It assigns
  634. * a pointer to the memory that the platform has kept aside to pass platform
  635. * specific and trusted firmware related information to BL31. This memory is
  636. * allocated by allocating memory to bl2_to_bl31_params_mem structure which is
  637. * a superset of all the structure whose information is passed to BL31
  638. *
  639. * NOTE: The memory is statically allocated, thus this function should be
  640. * called only once. All subsequent calls will overwrite any changes.
  641. *
  642. * Return: bl31 params structure pointer
  643. */
  644. struct bl31_params *bl2_plat_get_bl31_params_default(uintptr_t bl32_entry,
  645. uintptr_t bl33_entry,
  646. uintptr_t fdt_addr);
  647. /**
  648. * bl2_plat_get_bl31_params_v2() - return params for bl31
  649. * @bl32_entry: address of BL32 executable (secure)
  650. * @bl33_entry: address of BL33 executable (non secure)
  651. * @fdt_addr: address of Flat Device Tree
  652. *
  653. * This function does the same as bl2_plat_get_bl31_params() except that is is
  654. * used for the new LOAD_IMAGE_V2 option, which uses a slightly different
  655. * method to pass the parameters.
  656. *
  657. * Return: bl31 params structure pointer
  658. */
  659. struct bl_params *bl2_plat_get_bl31_params_v2(uintptr_t bl32_entry,
  660. uintptr_t bl33_entry,
  661. uintptr_t fdt_addr);
  662. /**
  663. * bl2_plat_get_bl31_params_v2_default() - prepare params for bl31.
  664. * @bl32_entry: address of BL32 executable (secure)
  665. * @bl33_entry: address of BL33 executable (non secure)
  666. * @fdt_addr: address of Flat Device Tree
  667. *
  668. * This is the default implementation of bl2_plat_get_bl31_params_v2(). It
  669. * prepares the linked list of the bl31 params, populates the image types and
  670. * set the entry points for bl32 and bl33 (if available).
  671. *
  672. * NOTE: The memory is statically allocated, thus this function should be
  673. * called only once. All subsequent calls will overwrite any changes.
  674. *
  675. * Return: bl31 params structure pointer
  676. */
  677. struct bl_params *bl2_plat_get_bl31_params_v2_default(uintptr_t bl32_entry,
  678. uintptr_t bl33_entry,
  679. uintptr_t fdt_addr);
  680. /**
  681. * spl_optee_entry - entry function for optee
  682. *
  683. * args defind in op-tee project
  684. * https://github.com/OP-TEE/optee_os/
  685. * core/arch/arm/kernel/generic_entry_a32.S
  686. * @arg0: pagestore
  687. * @arg1: (ARMv7 standard bootarg #1)
  688. * @arg2: device tree address, (ARMv7 standard bootarg #2)
  689. * @arg3: non-secure entry address (ARMv7 bootarg #0)
  690. */
  691. void spl_optee_entry(void *arg0, void *arg1, void *arg2, void *arg3);
  692. /**
  693. * spl_invoke_opensbi - boot using a RISC-V OpenSBI image
  694. */
  695. void spl_invoke_opensbi(struct spl_image_info *spl_image);
  696. /**
  697. * board_return_to_bootrom - allow for boards to continue with the boot ROM
  698. *
  699. * If a board (e.g. the Rockchip RK3368 boards) provide some
  700. * supporting functionality for SPL in their boot ROM and the SPL
  701. * stage wants to return to the ROM code to continue booting, boards
  702. * can implement 'board_return_to_bootrom'.
  703. */
  704. int board_return_to_bootrom(struct spl_image_info *spl_image,
  705. struct spl_boot_device *bootdev);
  706. /**
  707. * board_spl_fit_post_load - allow process images after loading finished
  708. * @fit: Pointer to a valid Flattened Image Tree blob
  709. */
  710. void board_spl_fit_post_load(const void *fit);
  711. /**
  712. * board_spl_fit_size_align - specific size align before processing payload
  713. *
  714. */
  715. ulong board_spl_fit_size_align(ulong size);
  716. /**
  717. * spl_perform_fixups() - arch/board-specific callback before processing
  718. * the boot-payload
  719. */
  720. void spl_perform_fixups(struct spl_image_info *spl_image);
  721. /*
  722. * spl_get_load_buffer() - get buffer for loading partial image data
  723. *
  724. * Returns memory area which can be populated by partial image data,
  725. * ie. uImage or fitImage header.
  726. */
  727. struct image_header *spl_get_load_buffer(ssize_t offset, size_t size);
  728. void spl_save_restore_data(void);
  729. #endif