1 /* SPDX-License-Identifier: GPL-2.0+ */
4 * Texas Instruments, <www.ti.com>
9 #include <binman_sym.h>
10 #include <linker_lists.h>
12 /* Platform-specific defines */
13 #include <linux/compiler.h>
14 #include <asm/global_data.h>
22 /* Value in r0 indicates we booted from U-Boot */
23 #define UBOOT_NOT_LOADED_FROM_SPL 0x13578642
26 #define MMCSD_MODE_UNDEFINED 0
27 #define MMCSD_MODE_RAW 1
28 #define MMCSD_MODE_FS 2
29 #define MMCSD_MODE_EMMCBOOT 3
33 struct spl_boot_device;
36 * u_boot_first_phase() - check if this is the first U-Boot phase
38 * U-Boot has up to three phases: TPL, SPL and U-Boot proper. Depending on the
39 * build flags we can determine whether the current build is for the first
40 * phase of U-Boot or not. If there is no SPL, then this is U-Boot proper. If
41 * there is SPL but no TPL, the the first phase is SPL. If there is TPL, then
42 * it is the first phase.
44 * @returns true if this is the first phase of U-Boot
47 static inline bool u_boot_first_phase(void)
49 if (IS_ENABLED(CONFIG_TPL)) {
50 if (IS_ENABLED(CONFIG_TPL_BUILD))
52 } else if (IS_ENABLED(CONFIG_SPL)) {
53 if (IS_ENABLED(CONFIG_SPL_BUILD))
63 PHASE_NONE, /* Invalid phase, signifying before U-Boot */
64 PHASE_TPL, /* Running in TPL */
65 PHASE_VPL, /* Running in VPL */
66 PHASE_SPL, /* Running in SPL */
67 PHASE_BOARD_F, /* Running in U-Boot before relocation */
68 PHASE_BOARD_R, /* Running in U-Boot after relocation */
72 * spl_phase() - Find out the phase of U-Boot
74 * This can be used to avoid #ifdef logic and use if() instead.
76 * For example, to include code only in TPL, you might do:
78 * #ifdef CONFIG_TPL_BUILD
82 * but with this you can use:
84 * if (spl_phase() == PHASE_TPL) {
88 * To include code only in SPL, you might do:
90 * #if defined(CONFIG_SPL_BUILD) && !defined(CONFIG_TPL_BUILD)
94 * but with this you can use:
96 * if (spl_phase() == PHASE_SPL) {
100 * To include code only in U-Boot proper, you might do:
102 * #ifndef CONFIG_SPL_BUILD
106 * but with this you can use:
108 * if (spl_phase() == PHASE_BOARD_F) {
112 * Return: U-Boot phase
114 static inline enum u_boot_phase spl_phase(void)
116 #ifdef CONFIG_TPL_BUILD
118 #elif defined(CONFIG_VPL_BUILD)
120 #elif defined(CONFIG_SPL_BUILD)
123 DECLARE_GLOBAL_DATA_PTR;
125 if (!(gd->flags & GD_FLG_RELOC))
126 return PHASE_BOARD_F;
128 return PHASE_BOARD_R;
133 * spl_prev_phase() - Figure out the previous U-Boot phase
135 * Return: the previous phase from this one, e.g. if called in SPL this returns
136 * PHASE_TPL, if TPL is enabled
138 static inline enum u_boot_phase spl_prev_phase(void)
140 #ifdef CONFIG_TPL_BUILD
142 #elif defined(CONFIG_VPL_BUILD)
143 return PHASE_TPL; /* VPL requires TPL */
144 #elif defined(CONFIG_SPL_BUILD)
145 return IS_ENABLED(CONFIG_VPL) ? PHASE_VPL :
146 IS_ENABLED(CONFIG_TPL) ? PHASE_TPL :
149 return IS_ENABLED(CONFIG_SPL) ? PHASE_SPL :
155 * spl_next_phase() - Figure out the next U-Boot phase
157 * Return: the next phase from this one, e.g. if called in TPL this returns
160 static inline enum u_boot_phase spl_next_phase(void)
162 #ifdef CONFIG_TPL_BUILD
163 return IS_ENABLED(CONFIG_VPL) ? PHASE_VPL : PHASE_SPL;
164 #elif defined(CONFIG_VPL_BUILD)
167 return PHASE_BOARD_F;
172 * spl_phase_name() - Get the name of the current phase
176 static inline const char *spl_phase_name(enum u_boot_phase phase)
194 * spl_phase_prefix() - Get the prefix of the current phase
196 * @phase: Phase to look up
197 * Return: phase prefix ("spl", "tpl", etc.)
199 static inline const char *spl_phase_prefix(enum u_boot_phase phase)
216 /* A string name for SPL or TPL */
217 #ifdef CONFIG_SPL_BUILD
218 # ifdef CONFIG_TPL_BUILD
219 # define SPL_TPL_NAME "TPL"
220 # elif defined(CONFIG_VPL_BUILD)
221 # define SPL_TPL_NAME "VPL"
223 # define SPL_TPL_NAME "SPL"
225 # define SPL_TPL_PROMPT SPL_TPL_NAME ": "
227 # define SPL_TPL_NAME ""
228 # define SPL_TPL_PROMPT ""
231 struct spl_image_info {
235 uintptr_t entry_point;
236 #if CONFIG_IS_ENABLED(LOAD_FIT) || CONFIG_IS_ENABLED(LOAD_FIT_FULL)
244 #ifdef CONFIG_SPL_LEGACY_IMAGE_CRC_CHECK
252 * Information required to load data from a device
254 * @dev: Pointer to the device, e.g. struct mmc *
255 * @priv: Private data for the device
256 * @bl_len: Block length for reading in bytes
257 * @filename: Name of the fit image file.
258 * @read: Function to call to read from the device
260 struct spl_load_info {
264 const char *filename;
266 * read() - Read from device
268 * @load: Information about the load state
269 * @sector: Sector number to read from (each @load->bl_len bytes)
270 * @count: Number of sectors to read
271 * @buf: Buffer to read into
272 * @return number of sectors read, 0 on error
274 ulong (*read)(struct spl_load_info *load, ulong sector, ulong count,
279 * We need to know the position of U-Boot in memory so we can jump to it. We
280 * allow any U-Boot binary to be used (u-boot.bin, u-boot-nodtb.bin,
281 * u-boot.img), hence the '_any'. These is no checking here that the correct
282 * image is found. For example if u-boot.img is used we don't check that
283 * spl_parse_image_header() can parse a valid header.
285 * Similarly for SPL, so that TPL can jump to SPL.
287 binman_sym_extern(ulong, u_boot_any, image_pos);
288 binman_sym_extern(ulong, u_boot_any, size);
289 binman_sym_extern(ulong, u_boot_spl, image_pos);
290 binman_sym_extern(ulong, u_boot_spl, size);
293 * spl_get_image_pos() - get the image position of the next phase
295 * This returns the image position to use to load the next phase of U-Boot
297 ulong spl_get_image_pos(void);
300 * spl_get_image_size() - get the size of the next phase
302 * This returns the size to use to load the next phase of U-Boot
304 ulong spl_get_image_size(void);
307 * spl_get_image_text_base() - get the text base of the next phase
309 * This returns the address that the next stage is linked to run at, i.e.
310 * CONFIG_SPL_TEXT_BASE or CONFIG_SYS_TEXT_BASE
312 * Return: text-base address
314 ulong spl_get_image_text_base(void);
317 * spl_load_simple_fit_skip_processing() - Hook to allow skipping the FIT
318 * image processing during spl_load_simple_fit().
320 * Return true to skip FIT processing, false to preserve the full code flow
321 * of spl_load_simple_fit().
323 bool spl_load_simple_fit_skip_processing(void);
326 * spl_load_simple_fit_fix_load() - Hook to make fixes
327 * after fit image header is loaded
329 * Returns pointer to fit
331 void *spl_load_simple_fit_fix_load(const void *fit);
334 * spl_load_simple_fit() - Loads a fit image from a device.
335 * @spl_image: Image description to set up
336 * @info: Structure containing the information required to load data.
337 * @sector: Sector number where FIT image is located in the device
338 * @fdt: Pointer to the copied FIT header.
340 * Reads the FIT image @sector in the device. Loads u-boot image to
341 * specified load address and copies the dtb to end of u-boot image.
342 * Returns 0 on success.
344 int spl_load_simple_fit(struct spl_image_info *spl_image,
345 struct spl_load_info *info, ulong sector, void *fdt);
347 #define SPL_COPY_PAYLOAD_ONLY 1
348 #define SPL_FIT_FOUND 2
351 * spl_load_legacy_img() - Loads a legacy image from a device.
352 * @spl_image: Image description to set up
353 * @load: Structure containing the information required to load data.
354 * @header: Pointer to image header (including appended image)
356 * Reads an legacy image from the device. Loads u-boot image to
357 * specified load address.
358 * Returns 0 on success.
360 int spl_load_legacy_img(struct spl_image_info *spl_image,
361 struct spl_boot_device *bootdev,
362 struct spl_load_info *load, ulong header);
365 * spl_load_imx_container() - Loads a imx container image from a device.
366 * @spl_image: Image description to set up
367 * @info: Structure containing the information required to load data.
368 * @sector: Sector number where container image is located in the device
370 * Reads the container image @sector in the device. Loads u-boot image to
371 * specified load address.
373 int spl_load_imx_container(struct spl_image_info *spl_image,
374 struct spl_load_info *info, ulong sector);
376 /* SPL common functions */
377 void preloader_console_init(void);
378 u32 spl_boot_device(void);
381 * spl_mmc_boot_mode() - Lookup function for the mode of an MMC boot source.
382 * @boot_device: ID of the device which the MMC driver wants to read
383 * from. Common values are e.g. BOOT_DEVICE_MMC1,
384 * BOOT_DEVICE_MMC2, BOOT_DEVICE_MMC2_2.
386 * This function should return one of MMCSD_MODE_FS, MMCSD_MODE_EMMCBOOT, or
387 * MMCSD_MODE_RAW for each MMC boot source which is defined for the target. The
388 * boot_device parameter tells which device the MMC driver is interested in.
390 * If not overridden, it is weakly defined in common/spl/spl_mmc.c.
392 * Note: It is important to use the boot_device parameter instead of e.g.
393 * spl_boot_device() as U-Boot is not always loaded from the same device as SPL.
395 u32 spl_mmc_boot_mode(struct mmc *mmc, const u32 boot_device);
398 * spl_mmc_boot_partition() - MMC partition to load U-Boot from.
399 * @boot_device: ID of the device which the MMC driver wants to load
402 * This function should return the partition number which the SPL
403 * should load U-Boot from (on the given boot_device) when
404 * CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION is set.
406 * If not overridden, it is weakly defined in common/spl/spl_mmc.c.
408 int spl_mmc_boot_partition(const u32 boot_device);
412 * default_spl_mmc_emmc_boot_partition() - eMMC boot partition to load U-Boot from.
413 * mmc: Pointer for the mmc device structure
415 * This function should return the eMMC boot partition number which
416 * the SPL should load U-Boot from (on the given boot_device).
418 int default_spl_mmc_emmc_boot_partition(struct mmc *mmc);
421 * spl_mmc_emmc_boot_partition() - eMMC boot partition to load U-Boot from.
422 * mmc: Pointer for the mmc device structure
424 * This function should return the eMMC boot partition number which
425 * the SPL should load U-Boot from (on the given boot_device).
427 * If not overridden, it is weakly defined in common/spl/spl_mmc.c
428 * and calls default_spl_mmc_emmc_boot_partition();
430 int spl_mmc_emmc_boot_partition(struct mmc *mmc);
432 void spl_set_bd(void);
435 * spl_set_header_raw_uboot() - Set up a standard SPL image structure
437 * This sets up the given spl_image which the standard values obtained from
438 * config options: CONFIG_SYS_MONITOR_LEN, CONFIG_SYS_UBOOT_START,
439 * CONFIG_SYS_TEXT_BASE.
441 * @spl_image: Image description to set up
443 void spl_set_header_raw_uboot(struct spl_image_info *spl_image);
446 * spl_parse_image_header() - parse the image header and set up info
448 * This parses the legacy image header information at @header and sets up
449 * @spl_image according to what is found. If no image header is found, then
450 * a raw image or bootz is assumed. If CONFIG_SPL_PANIC_ON_RAW_IMAGE is
451 * enabled, then this causes a panic. If CONFIG_SPL_RAW_IMAGE_SUPPORT is not
452 * enabled then U-Boot gives up. Otherwise U-Boot sets up the image using
453 * spl_set_header_raw_uboot(), or possibly the bootz header.
455 * @spl_image: Image description to set up
456 * @header image header to parse
457 * Return: 0 if a header was correctly parsed, -ve on error
459 int spl_parse_image_header(struct spl_image_info *spl_image,
460 const struct spl_boot_device *bootdev,
461 const struct image_header *header);
463 void spl_board_prepare_for_linux(void);
466 * spl_board_prepare_for_optee() - Prepare board for an OPTEE payload
468 * Prepares the board for booting an OP-TEE payload. Initialization is platform
469 * specific, and may include configuring the TrustZone memory, and other
470 * initialization steps required by OP-TEE.
471 * Note that @fdt is not used directly by OP-TEE. OP-TEE passes this @fdt to
472 * its normal world target. This target is not guaranteed to be u-boot, so @fdt
473 * changes that would normally be done by u-boot should be done in this step.
475 * @fdt: Devicetree that will be passed on, or NULL
477 void spl_board_prepare_for_optee(void *fdt);
478 void spl_board_prepare_for_boot(void);
479 int spl_board_ubi_load_image(u32 boot_device);
480 int spl_board_boot_device(u32 boot_device);
483 * spl_board_loader_name() - Return a name for the loader
485 * This is a weak function which might be overridden by the board code. With
486 * that a board specific value for the device where the U-Boot will be loaded
487 * from can be set. By default it returns NULL.
489 * @boot_device: ID of the device which SPL wants to load U-Boot from.
491 const char *spl_board_loader_name(u32 boot_device);
494 * jump_to_image_linux() - Jump to a Linux kernel from SPL
496 * This jumps into a Linux kernel using the information in @spl_image.
498 * @spl_image: Image description to set up
500 void __noreturn jump_to_image_linux(struct spl_image_info *spl_image);
503 * jump_to_image_linux() - Jump to OP-TEE OS from SPL
505 * This jumps into OP-TEE OS using the information in @spl_image.
507 * @spl_image: Image description to set up
509 void __noreturn jump_to_image_optee(struct spl_image_info *spl_image);
512 * spl_start_uboot() - Check if SPL should start the kernel or U-Boot
514 * This is called by the various SPL loaders to determine whether the board
515 * wants to load the kernel or U-Boot. This function should be provided by
518 * Return: 0 if SPL should start the kernel, 1 if U-Boot must be started
520 int spl_start_uboot(void);
523 * spl_display_print() - Display a board-specific message in SPL
525 * If CONFIG_SPL_DISPLAY_PRINT is enabled, U-Boot will call this function
526 * immediately after displaying the SPL console banner ("U-Boot SPL ...").
527 * This function should be provided by the board.
529 void spl_display_print(void);
532 * struct spl_boot_device - Describes a boot device used by SPL
534 * @boot_device: A number indicating the BOOT_DEVICE type. There are various
535 * BOOT_DEVICE... #defines and enums in U-Boot and they are not consistently
537 * @boot_device_name: Named boot device, or NULL if none.
539 * Note: Additional fields can be added here, bearing in mind that SPL is
540 * size-sensitive and common fields will be present on all boards. This
541 * struct can also be used to return additional information about the load
542 * process if that becomes useful.
544 struct spl_boot_device {
546 const char *boot_device_name;
550 * Holds information about a way of loading an SPL image
552 * @name: User-friendly name for this method (e.g. "MMC")
553 * @boot_device: Boot device that this loader supports
554 * @load_image: Function to call to load image
556 struct spl_image_loader {
557 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
562 * load_image() - Load an SPL image
564 * @spl_image: place to put image information
565 * @bootdev: describes the boot device to load from
567 int (*load_image)(struct spl_image_info *spl_image,
568 struct spl_boot_device *bootdev);
571 /* Helper function for accessing the name */
572 static inline const char *spl_loader_name(const struct spl_image_loader *loader)
574 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
576 name = spl_board_loader_name(loader->boot_device);
577 return name ?: loader->name;
583 /* Declare an SPL image loader */
584 #define SPL_LOAD_IMAGE(__name) \
585 ll_entry_declare(struct spl_image_loader, __name, spl_image_loader)
588 * _priority is the priority of this method, 0 meaning it will be the top
589 * choice for this device, 9 meaning it is the bottom choice.
590 * _boot_device is the BOOT_DEVICE_... value
591 * _method is the load_image function to call
593 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
594 #define SPL_LOAD_IMAGE_METHOD(_name, _priority, _boot_device, _method) \
595 SPL_LOAD_IMAGE(_boot_device ## _priority ## _method) = { \
597 .boot_device = _boot_device, \
598 .load_image = _method, \
601 #define SPL_LOAD_IMAGE_METHOD(_name, _priority, _boot_device, _method) \
602 SPL_LOAD_IMAGE(_boot_device ## _priority ## _method) = { \
603 .boot_device = _boot_device, \
604 .load_image = _method, \
608 /* SPL FAT image functions */
609 int spl_load_image_fat(struct spl_image_info *spl_image,
610 struct spl_boot_device *bootdev,
611 struct blk_desc *block_dev, int partition,
612 const char *filename);
613 int spl_load_image_fat_os(struct spl_image_info *spl_image,
614 struct spl_boot_device *bootdev,
615 struct blk_desc *block_dev, int partition);
617 void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image);
619 /* SPL EXT image functions */
620 int spl_load_image_ext(struct spl_image_info *spl_image,
621 struct spl_boot_device *bootdev,
622 struct blk_desc *block_dev, int partition,
623 const char *filename);
624 int spl_load_image_ext_os(struct spl_image_info *spl_image,
625 struct spl_boot_device *bootdev,
626 struct blk_desc *block_dev, int partition);
629 * spl_early_init() - Set up device tree and driver model in SPL if enabled
631 * Call this function in board_init_f() if you want to use device tree and
632 * driver model early, before board_init_r() is called.
634 * If this is not called, then driver model will be inactive in SPL's
635 * board_init_f(), and no device tree will be available.
637 int spl_early_init(void);
640 * spl_init() - Set up device tree and driver model in SPL if enabled
642 * You can optionally call spl_early_init(), then optionally call spl_init().
643 * This function will be called from board_init_r() if not called earlier.
645 * Both spl_early_init() and spl_init() perform a similar function except that
646 * the latter will not set up the malloc() area if
647 * CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN is enabled, since it is assumed to
648 * already be done by a calll to spl_relocate_stack_gd() before board_init_r()
651 * This function will be called from board_init_r() if not called earlier.
653 * If this is not called, then driver model will be inactive in SPL's
654 * board_init_f(), and no device tree will be available.
658 #ifdef CONFIG_SPL_BOARD_INIT
659 void spl_board_init(void);
663 * spl_was_boot_source() - check if U-Boot booted from SPL
665 * This will normally be true, but if U-Boot jumps to second U-Boot, it will
666 * be false. This should be implemented by board-specific code.
668 * Return: true if U-Boot booted from SPL, else false
670 bool spl_was_boot_source(void);
673 * spl_dfu_cmd- run dfu command with chosen mmc device interface
674 * @param usb_index - usb controller number
675 * @param mmc_dev - mmc device nubmer
677 * Return: 0 on success, otherwise error code
679 int spl_dfu_cmd(int usbctrl, char *dfu_alt_info, char *interface, char *devstr);
681 int spl_mmc_load_image(struct spl_image_info *spl_image,
682 struct spl_boot_device *bootdev);
685 * spl_mmc_load() - Load an image file from MMC/SD media
687 * @param spl_image Image data filled in by loading process
688 * @param bootdev Describes which device to load from
689 * @param filename Name of file to load (in FS mode)
690 * @param raw_part Partition to load from (in RAW mode)
691 * @param raw_sect Sector to load from (in RAW mode)
693 * Return: 0 on success, otherwise error code
695 int spl_mmc_load(struct spl_image_info *spl_image,
696 struct spl_boot_device *bootdev,
697 const char *filename,
699 unsigned long raw_sect);
702 * spl_usb_load() - Load an image file from USB mass storage
704 * @param spl_image Image data filled in by loading process
705 * @param bootdev Describes which device to load from
706 * @param raw_part Fat partition to load from
707 * @param filename Name of file to load
709 * Return: 0 on success, otherwise error code
711 int spl_usb_load(struct spl_image_info *spl_image,
712 struct spl_boot_device *bootdev,
713 int partition, const char *filename);
715 int spl_ymodem_load_image(struct spl_image_info *spl_image,
716 struct spl_boot_device *bootdev);
719 * spl_invoke_atf - boot using an ARM trusted firmware image
721 void spl_invoke_atf(struct spl_image_info *spl_image);
724 * bl2_plat_get_bl31_params() - return params for bl31.
725 * @bl32_entry: address of BL32 executable (secure)
726 * @bl33_entry: address of BL33 executable (non secure)
727 * @fdt_addr: address of Flat Device Tree
729 * This is a weak function which might be overridden by the board code. By
730 * default it will just call bl2_plat_get_bl31_params_default().
732 * If you just want to manipulate or add some parameters, you can override
733 * this function, call bl2_plat_get_bl31_params_default and operate on the
734 * returned bl31 params.
736 * Return: bl31 params structure pointer
738 struct bl31_params *bl2_plat_get_bl31_params(uintptr_t bl32_entry,
739 uintptr_t bl33_entry,
743 * bl2_plat_get_bl31_params_default() - prepare params for bl31.
744 * @bl32_entry: address of BL32 executable (secure)
745 * @bl33_entry: address of BL33 executable (non secure)
746 * @fdt_addr: address of Flat Device Tree
748 * This is the default implementation of bl2_plat_get_bl31_params(). It assigns
749 * a pointer to the memory that the platform has kept aside to pass platform
750 * specific and trusted firmware related information to BL31. This memory is
751 * allocated by allocating memory to bl2_to_bl31_params_mem structure which is
752 * a superset of all the structure whose information is passed to BL31
754 * NOTE: The memory is statically allocated, thus this function should be
755 * called only once. All subsequent calls will overwrite any changes.
757 * Return: bl31 params structure pointer
759 struct bl31_params *bl2_plat_get_bl31_params_default(uintptr_t bl32_entry,
760 uintptr_t bl33_entry,
764 * bl2_plat_get_bl31_params_v2() - return params for bl31
765 * @bl32_entry: address of BL32 executable (secure)
766 * @bl33_entry: address of BL33 executable (non secure)
767 * @fdt_addr: address of Flat Device Tree
769 * This function does the same as bl2_plat_get_bl31_params() except that is is
770 * used for the new LOAD_IMAGE_V2 option, which uses a slightly different
771 * method to pass the parameters.
773 * Return: bl31 params structure pointer
775 struct bl_params *bl2_plat_get_bl31_params_v2(uintptr_t bl32_entry,
776 uintptr_t bl33_entry,
780 * bl2_plat_get_bl31_params_v2_default() - prepare params for bl31.
781 * @bl32_entry: address of BL32 executable (secure)
782 * @bl33_entry: address of BL33 executable (non secure)
783 * @fdt_addr: address of Flat Device Tree
785 * This is the default implementation of bl2_plat_get_bl31_params_v2(). It
786 * prepares the linked list of the bl31 params, populates the image types and
787 * set the entry points for bl32 and bl33 (if available).
789 * NOTE: The memory is statically allocated, thus this function should be
790 * called only once. All subsequent calls will overwrite any changes.
792 * Return: bl31 params structure pointer
794 struct bl_params *bl2_plat_get_bl31_params_v2_default(uintptr_t bl32_entry,
795 uintptr_t bl33_entry,
798 * spl_optee_entry - entry function for optee
800 * args defind in op-tee project
801 * https://github.com/OP-TEE/optee_os/
802 * core/arch/arm/kernel/generic_entry_a32.S
804 * @arg1: (ARMv7 standard bootarg #1)
805 * @arg2: device tree address, (ARMv7 standard bootarg #2)
806 * @arg3: non-secure entry address (ARMv7 bootarg #0)
808 void __noreturn spl_optee_entry(void *arg0, void *arg1, void *arg2, void *arg3);
811 * spl_invoke_opensbi - boot using a RISC-V OpenSBI image
813 void spl_invoke_opensbi(struct spl_image_info *spl_image);
816 * board_return_to_bootrom - allow for boards to continue with the boot ROM
818 * If a board (e.g. the Rockchip RK3368 boards) provide some
819 * supporting functionality for SPL in their boot ROM and the SPL
820 * stage wants to return to the ROM code to continue booting, boards
821 * can implement 'board_return_to_bootrom'.
823 int board_return_to_bootrom(struct spl_image_info *spl_image,
824 struct spl_boot_device *bootdev);
827 * board_spl_fit_post_load - allow process images after loading finished
828 * @fit: Pointer to a valid Flattened Image Tree blob
830 void board_spl_fit_post_load(const void *fit);
833 * board_spl_fit_size_align - specific size align before processing payload
836 ulong board_spl_fit_size_align(ulong size);
839 * spl_perform_fixups() - arch/board-specific callback before processing
842 void spl_perform_fixups(struct spl_image_info *spl_image);
845 * spl_get_load_buffer() - get buffer for loading partial image data
847 * Returns memory area which can be populated by partial image data,
848 * ie. uImage or fitImage header.
850 struct image_header *spl_get_load_buffer(ssize_t offset, size_t size);
852 void spl_save_restore_data(void);