spl.h 13 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. /* Platform-specific defines */
  10. #include <linux/compiler.h>
  11. #include <asm/spl.h>
  12. #include <handoff.h>
  13. /* Value in r0 indicates we booted from U-Boot */
  14. #define UBOOT_NOT_LOADED_FROM_SPL 0x13578642
  15. /* Boot type */
  16. #define MMCSD_MODE_UNDEFINED 0
  17. #define MMCSD_MODE_RAW 1
  18. #define MMCSD_MODE_FS 2
  19. #define MMCSD_MODE_EMMCBOOT 3
  20. /*
  21. * u_boot_first_phase() - check if this is the first U-Boot phase
  22. *
  23. * U-Boot has up to three phases: TPL, SPL and U-Boot proper. Depending on the
  24. * build flags we can determine whether the current build is for the first
  25. * phase of U-Boot or not. If there is no SPL, then this is U-Boot proper. If
  26. * there is SPL but no TPL, the the first phase is SPL. If there is TPL, then
  27. * it is the first phase.
  28. *
  29. * @returns true if this is the first phase of U-Boot
  30. *
  31. */
  32. static inline bool u_boot_first_phase(void)
  33. {
  34. if (IS_ENABLED(CONFIG_TPL)) {
  35. if (IS_ENABLED(CONFIG_TPL_BUILD))
  36. return true;
  37. } else if (IS_ENABLED(CONFIG_SPL)) {
  38. if (IS_ENABLED(CONFIG_SPL_BUILD))
  39. return true;
  40. } else {
  41. return true;
  42. }
  43. return false;
  44. }
  45. /* A string name for SPL or TPL */
  46. #ifdef CONFIG_SPL_BUILD
  47. # ifdef CONFIG_TPL_BUILD
  48. # define SPL_TPL_NAME "TPL"
  49. # else
  50. # define SPL_TPL_NAME "SPL"
  51. # endif
  52. # define SPL_TPL_PROMPT SPL_TPL_NAME ": "
  53. #else
  54. # define SPL_TPL_NAME ""
  55. # define SPL_TPL_PROMPT ""
  56. #endif
  57. struct spl_image_info {
  58. const char *name;
  59. u8 os;
  60. uintptr_t load_addr;
  61. uintptr_t entry_point;
  62. #if CONFIG_IS_ENABLED(LOAD_FIT) || CONFIG_IS_ENABLED(LOAD_FIT_FULL)
  63. void *fdt_addr;
  64. #endif
  65. u32 boot_device;
  66. u32 size;
  67. u32 flags;
  68. void *arg;
  69. #ifdef CONFIG_SPL_LEGACY_IMAGE_CRC_CHECK
  70. ulong dcrc_data;
  71. ulong dcrc_length;
  72. ulong dcrc;
  73. #endif
  74. };
  75. /*
  76. * Information required to load data from a device
  77. *
  78. * @dev: Pointer to the device, e.g. struct mmc *
  79. * @priv: Private data for the device
  80. * @bl_len: Block length for reading in bytes
  81. * @filename: Name of the fit image file.
  82. * @read: Function to call to read from the device
  83. */
  84. struct spl_load_info {
  85. void *dev;
  86. void *priv;
  87. int bl_len;
  88. const char *filename;
  89. ulong (*read)(struct spl_load_info *load, ulong sector, ulong count,
  90. void *buf);
  91. };
  92. /*
  93. * We need to know the position of U-Boot in memory so we can jump to it. We
  94. * allow any U-Boot binary to be used (u-boot.bin, u-boot-nodtb.bin,
  95. * u-boot.img), hence the '_any'. These is no checking here that the correct
  96. * image is found. For * example if u-boot.img is used we don't check that
  97. * spl_parse_image_header() can parse a valid header.
  98. */
  99. binman_sym_extern(ulong, u_boot_any, image_pos);
  100. /**
  101. * spl_load_simple_fit_skip_processing() - Hook to allow skipping the FIT
  102. * image processing during spl_load_simple_fit().
  103. *
  104. * Return true to skip FIT processing, false to preserve the full code flow
  105. * of spl_load_simple_fit().
  106. */
  107. bool spl_load_simple_fit_skip_processing(void);
  108. /**
  109. * spl_load_simple_fit() - Loads a fit image from a device.
  110. * @spl_image: Image description to set up
  111. * @info: Structure containing the information required to load data.
  112. * @sector: Sector number where FIT image is located in the device
  113. * @fdt: Pointer to the copied FIT header.
  114. *
  115. * Reads the FIT image @sector in the device. Loads u-boot image to
  116. * specified load address and copies the dtb to end of u-boot image.
  117. * Returns 0 on success.
  118. */
  119. int spl_load_simple_fit(struct spl_image_info *spl_image,
  120. struct spl_load_info *info, ulong sector, void *fdt);
  121. #define SPL_COPY_PAYLOAD_ONLY 1
  122. #define SPL_FIT_FOUND 2
  123. /* SPL common functions */
  124. void preloader_console_init(void);
  125. u32 spl_boot_device(void);
  126. u32 spl_boot_mode(const u32 boot_device);
  127. int spl_boot_partition(const u32 boot_device);
  128. void spl_set_bd(void);
  129. /**
  130. * spl_set_header_raw_uboot() - Set up a standard SPL image structure
  131. *
  132. * This sets up the given spl_image which the standard values obtained from
  133. * config options: CONFIG_SYS_MONITOR_LEN, CONFIG_SYS_UBOOT_START,
  134. * CONFIG_SYS_TEXT_BASE.
  135. *
  136. * @spl_image: Image description to set up
  137. */
  138. void spl_set_header_raw_uboot(struct spl_image_info *spl_image);
  139. /**
  140. * spl_parse_image_header() - parse the image header and set up info
  141. *
  142. * This parses the legacy image header information at @header and sets up
  143. * @spl_image according to what is found. If no image header is found, then
  144. * a raw image or bootz is assumed. If CONFIG_SPL_PANIC_ON_RAW_IMAGE is
  145. * enabled, then this causes a panic. If CONFIG_SPL_RAW_IMAGE_SUPPORT is not
  146. * enabled then U-Boot gives up. Otherwise U-Boot sets up the image using
  147. * spl_set_header_raw_uboot(), or possibly the bootz header.
  148. *
  149. * @spl_image: Image description to set up
  150. * @header image header to parse
  151. * @return 0 if a header was correctly parsed, -ve on error
  152. */
  153. int spl_parse_image_header(struct spl_image_info *spl_image,
  154. const struct image_header *header);
  155. void spl_board_prepare_for_linux(void);
  156. void spl_board_prepare_for_boot(void);
  157. int spl_board_ubi_load_image(u32 boot_device);
  158. /**
  159. * jump_to_image_linux() - Jump to a Linux kernel from SPL
  160. *
  161. * This jumps into a Linux kernel using the information in @spl_image.
  162. *
  163. * @spl_image: Image description to set up
  164. */
  165. void __noreturn jump_to_image_linux(struct spl_image_info *spl_image);
  166. /**
  167. * spl_start_uboot() - Check if SPL should start the kernel or U-Boot
  168. *
  169. * This is called by the various SPL loaders to determine whether the board
  170. * wants to load the kernel or U-Boot. This function should be provided by
  171. * the board.
  172. *
  173. * @return 0 if SPL should start the kernel, 1 if U-Boot must be started
  174. */
  175. int spl_start_uboot(void);
  176. /**
  177. * spl_display_print() - Display a board-specific message in SPL
  178. *
  179. * If CONFIG_SPL_DISPLAY_PRINT is enabled, U-Boot will call this function
  180. * immediately after displaying the SPL console banner ("U-Boot SPL ...").
  181. * This function should be provided by the board.
  182. */
  183. void spl_display_print(void);
  184. /**
  185. * struct spl_boot_device - Describes a boot device used by SPL
  186. *
  187. * @boot_device: A number indicating the BOOT_DEVICE type. There are various
  188. * BOOT_DEVICE... #defines and enums in U-Boot and they are not consistently
  189. * numbered.
  190. * @boot_device_name: Named boot device, or NULL if none.
  191. *
  192. * Note: Additional fields can be added here, bearing in mind that SPL is
  193. * size-sensitive and common fields will be present on all boards. This
  194. * struct can also be used to return additional information about the load
  195. * process if that becomes useful.
  196. */
  197. struct spl_boot_device {
  198. uint boot_device;
  199. const char *boot_device_name;
  200. };
  201. /**
  202. * Holds information about a way of loading an SPL image
  203. *
  204. * @name: User-friendly name for this method (e.g. "MMC")
  205. * @boot_device: Boot device that this loader supports
  206. * @load_image: Function to call to load image
  207. */
  208. struct spl_image_loader {
  209. #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
  210. const char *name;
  211. #endif
  212. uint boot_device;
  213. /**
  214. * load_image() - Load an SPL image
  215. *
  216. * @spl_image: place to put image information
  217. * @bootdev: describes the boot device to load from
  218. */
  219. int (*load_image)(struct spl_image_info *spl_image,
  220. struct spl_boot_device *bootdev);
  221. };
  222. /* Declare an SPL image loader */
  223. #define SPL_LOAD_IMAGE(__name) \
  224. ll_entry_declare(struct spl_image_loader, __name, spl_image_loader)
  225. /*
  226. * _priority is the priority of this method, 0 meaning it will be the top
  227. * choice for this device, 9 meaning it is the bottom choice.
  228. * _boot_device is the BOOT_DEVICE_... value
  229. * _method is the load_image function to call
  230. */
  231. #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
  232. #define SPL_LOAD_IMAGE_METHOD(_name, _priority, _boot_device, _method) \
  233. SPL_LOAD_IMAGE(_method ## _priority ## _boot_device) = { \
  234. .name = _name, \
  235. .boot_device = _boot_device, \
  236. .load_image = _method, \
  237. }
  238. #else
  239. #define SPL_LOAD_IMAGE_METHOD(_name, _priority, _boot_device, _method) \
  240. SPL_LOAD_IMAGE(_method ## _priority ## _boot_device) = { \
  241. .boot_device = _boot_device, \
  242. .load_image = _method, \
  243. }
  244. #endif
  245. /* SPL FAT image functions */
  246. int spl_load_image_fat(struct spl_image_info *spl_image,
  247. struct blk_desc *block_dev, int partition,
  248. const char *filename);
  249. int spl_load_image_fat_os(struct spl_image_info *spl_image,
  250. struct blk_desc *block_dev, int partition);
  251. void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image);
  252. /* SPL EXT image functions */
  253. int spl_load_image_ext(struct spl_image_info *spl_image,
  254. struct blk_desc *block_dev, int partition,
  255. const char *filename);
  256. int spl_load_image_ext_os(struct spl_image_info *spl_image,
  257. struct blk_desc *block_dev, int partition);
  258. /**
  259. * spl_early_init() - Set up device tree and driver model in SPL if enabled
  260. *
  261. * Call this function in board_init_f() if you want to use device tree and
  262. * driver model early, before board_init_r() is called.
  263. *
  264. * If this is not called, then driver model will be inactive in SPL's
  265. * board_init_f(), and no device tree will be available.
  266. */
  267. int spl_early_init(void);
  268. /**
  269. * spl_init() - Set up device tree and driver model in SPL if enabled
  270. *
  271. * You can optionally call spl_early_init(), then optionally call spl_init().
  272. * This function will be called from board_init_r() if not called earlier.
  273. *
  274. * Both spl_early_init() and spl_init() perform a similar function except that
  275. * the latter will not set up the malloc() area if
  276. * CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN is enabled, since it is assumed to
  277. * already be done by a calll to spl_relocate_stack_gd() before board_init_r()
  278. * is reached.
  279. *
  280. * This function will be called from board_init_r() if not called earlier.
  281. *
  282. * If this is not called, then driver model will be inactive in SPL's
  283. * board_init_f(), and no device tree will be available.
  284. */
  285. int spl_init(void);
  286. #ifdef CONFIG_SPL_BOARD_INIT
  287. void spl_board_init(void);
  288. #endif
  289. /**
  290. * spl_was_boot_source() - check if U-Boot booted from SPL
  291. *
  292. * This will normally be true, but if U-Boot jumps to second U-Boot, it will
  293. * be false. This should be implemented by board-specific code.
  294. *
  295. * @return true if U-Boot booted from SPL, else false
  296. */
  297. bool spl_was_boot_source(void);
  298. /**
  299. * spl_dfu_cmd- run dfu command with chosen mmc device interface
  300. * @param usb_index - usb controller number
  301. * @param mmc_dev - mmc device nubmer
  302. *
  303. * @return 0 on success, otherwise error code
  304. */
  305. int spl_dfu_cmd(int usbctrl, char *dfu_alt_info, char *interface, char *devstr);
  306. int spl_mmc_load_image(struct spl_image_info *spl_image,
  307. struct spl_boot_device *bootdev);
  308. /**
  309. * spl_mmc_load() - Load an image file from MMC/SD media
  310. *
  311. * @param spl_image Image data filled in by loading process
  312. * @param bootdev Describes which device to load from
  313. * @param filename Name of file to load (in FS mode)
  314. * @param raw_part Partition to load from (in RAW mode)
  315. * @param raw_sect Sector to load from (in RAW mode)
  316. *
  317. * @return 0 on success, otherwise error code
  318. */
  319. int spl_mmc_load(struct spl_image_info *spl_image,
  320. struct spl_boot_device *bootdev,
  321. const char *filename,
  322. int raw_part,
  323. unsigned long raw_sect);
  324. /**
  325. * spl_invoke_atf - boot using an ARM trusted firmware image
  326. */
  327. void spl_invoke_atf(struct spl_image_info *spl_image);
  328. /**
  329. * spl_optee_entry - entry function for optee
  330. *
  331. * args defind in op-tee project
  332. * https://github.com/OP-TEE/optee_os/
  333. * core/arch/arm/kernel/generic_entry_a32.S
  334. * @arg0: pagestore
  335. * @arg1: (ARMv7 standard bootarg #1)
  336. * @arg2: device tree address, (ARMv7 standard bootarg #2)
  337. * @arg3: non-secure entry address (ARMv7 bootarg #0)
  338. */
  339. void spl_optee_entry(void *arg0, void *arg1, void *arg2, void *arg3);
  340. /**
  341. * spl_invoke_opensbi - boot using a RISC-V OpenSBI image
  342. */
  343. void spl_invoke_opensbi(struct spl_image_info *spl_image);
  344. /**
  345. * board_return_to_bootrom - allow for boards to continue with the boot ROM
  346. *
  347. * If a board (e.g. the Rockchip RK3368 boards) provide some
  348. * supporting functionality for SPL in their boot ROM and the SPL
  349. * stage wants to return to the ROM code to continue booting, boards
  350. * can implement 'board_return_to_bootrom'.
  351. */
  352. int board_return_to_bootrom(struct spl_image_info *spl_image,
  353. struct spl_boot_device *bootdev);
  354. /**
  355. * board_spl_fit_post_load - allow process images after loading finished
  356. *
  357. */
  358. void board_spl_fit_post_load(ulong load_addr, size_t length);
  359. /**
  360. * board_spl_fit_size_align - specific size align before processing payload
  361. *
  362. */
  363. ulong board_spl_fit_size_align(ulong size);
  364. /**
  365. * spl_perform_fixups() - arch/board-specific callback before processing
  366. * the boot-payload
  367. */
  368. void spl_perform_fixups(struct spl_image_info *spl_image);
  369. /*
  370. * spl_get_load_buffer() - get buffer for loading partial image data
  371. *
  372. * Returns memory area which can be populated by partial image data,
  373. * ie. uImage or fitImage header.
  374. */
  375. struct image_header *spl_get_load_buffer(ssize_t offset, size_t size);
  376. #endif