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>
20 struct legacy_img_hdr;
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
32 struct legacy_img_hdr;
33 struct spl_boot_device;
37 * u_boot_first_phase() - check if this is the first U-Boot phase
39 * U-Boot has up to three phases: TPL, SPL and U-Boot proper. Depending on the
40 * build flags we can determine whether the current build is for the first
41 * phase of U-Boot or not. If there is no SPL, then this is U-Boot proper. If
42 * there is SPL but no TPL, the the first phase is SPL. If there is TPL, then
43 * it is the first phase.
45 * @returns true if this is the first phase of U-Boot
48 static inline bool u_boot_first_phase(void)
50 if (IS_ENABLED(CONFIG_TPL)) {
51 if (IS_ENABLED(CONFIG_TPL_BUILD))
53 } else if (IS_ENABLED(CONFIG_SPL)) {
54 if (IS_ENABLED(CONFIG_SPL_BUILD))
64 PHASE_NONE, /* Invalid phase, signifying before U-Boot */
65 PHASE_TPL, /* Running in TPL */
66 PHASE_VPL, /* Running in VPL */
67 PHASE_SPL, /* Running in SPL */
68 PHASE_BOARD_F, /* Running in U-Boot before relocation */
69 PHASE_BOARD_R, /* Running in U-Boot after relocation */
75 * spl_phase() - Find out the phase of U-Boot
77 * This can be used to avoid #ifdef logic and use if() instead.
79 * For example, to include code only in TPL, you might do:
81 * #ifdef CONFIG_TPL_BUILD
85 * but with this you can use:
87 * if (spl_phase() == PHASE_TPL) {
91 * To include code only in SPL, you might do:
93 * #if defined(CONFIG_SPL_BUILD) && !defined(CONFIG_TPL_BUILD)
97 * but with this you can use:
99 * if (spl_phase() == PHASE_SPL) {
103 * To include code only in U-Boot proper, you might do:
105 * #ifndef CONFIG_SPL_BUILD
109 * but with this you can use:
111 * if (spl_phase() == PHASE_BOARD_F) {
115 * Return: U-Boot phase
117 static inline enum u_boot_phase spl_phase(void)
119 #ifdef CONFIG_TPL_BUILD
121 #elif defined(CONFIG_VPL_BUILD)
123 #elif defined(CONFIG_SPL_BUILD)
126 DECLARE_GLOBAL_DATA_PTR;
128 if (!(gd->flags & GD_FLG_RELOC))
129 return PHASE_BOARD_F;
131 return PHASE_BOARD_R;
135 /* returns true if in U-Boot proper, false if in SPL */
136 static inline bool spl_in_proper(void)
138 #ifdef CONFIG_SPL_BUILD
146 * spl_prev_phase() - Figure out the previous U-Boot phase
148 * Return: the previous phase from this one, e.g. if called in SPL this returns
149 * PHASE_TPL, if TPL is enabled
151 static inline enum u_boot_phase spl_prev_phase(void)
153 #ifdef CONFIG_TPL_BUILD
155 #elif defined(CONFIG_VPL_BUILD)
156 return PHASE_TPL; /* VPL requires TPL */
157 #elif defined(CONFIG_SPL_BUILD)
158 return IS_ENABLED(CONFIG_VPL) ? PHASE_VPL :
159 IS_ENABLED(CONFIG_TPL) ? PHASE_TPL :
162 return IS_ENABLED(CONFIG_SPL) ? PHASE_SPL :
168 * spl_next_phase() - Figure out the next U-Boot phase
170 * Return: the next phase from this one, e.g. if called in TPL this returns
173 static inline enum u_boot_phase spl_next_phase(void)
175 #ifdef CONFIG_TPL_BUILD
176 return IS_ENABLED(CONFIG_VPL) ? PHASE_VPL : PHASE_SPL;
177 #elif defined(CONFIG_VPL_BUILD)
180 return PHASE_BOARD_F;
185 * spl_phase_name() - Get the name of the current phase
189 static inline const char *spl_phase_name(enum u_boot_phase phase)
207 * spl_phase_prefix() - Get the prefix of the current phase
209 * @phase: Phase to look up
210 * Return: phase prefix ("spl", "tpl", etc.)
212 static inline const char *spl_phase_prefix(enum u_boot_phase phase)
229 /* A string name for SPL or TPL */
230 #ifdef CONFIG_SPL_BUILD
231 # ifdef CONFIG_TPL_BUILD
232 # define SPL_TPL_NAME "TPL"
233 # elif defined(CONFIG_VPL_BUILD)
234 # define SPL_TPL_NAME "VPL"
236 # define SPL_TPL_NAME "SPL"
238 # define SPL_TPL_PROMPT SPL_TPL_NAME ": "
240 # define SPL_TPL_NAME ""
241 # define SPL_TPL_PROMPT ""
245 * enum spl_sandbox_flags - flags for sandbox's use of spl_image_info->flags
247 * @SPL_SANDBOXF_ARG_IS_FNAME: arg is the filename to jump to (default)
248 * @SPL_SANDBOXF_ARG_IS_BUF: arg is the containing image to jump to, @offset is
249 * the start offset within the image, @size is the size of the image
251 enum spl_sandbox_flags {
252 SPL_SANDBOXF_ARG_IS_FNAME = 0,
253 SPL_SANDBOXF_ARG_IS_BUF,
256 struct spl_image_info {
260 uintptr_t entry_point;
261 #if CONFIG_IS_ENABLED(LOAD_FIT) || CONFIG_IS_ENABLED(LOAD_FIT_FULL)
269 #ifdef CONFIG_SPL_LEGACY_IMAGE_CRC_CHECK
276 static inline void *spl_image_fdt_addr(struct spl_image_info *info)
278 #if CONFIG_IS_ENABLED(LOAD_FIT) || CONFIG_IS_ENABLED(LOAD_FIT_FULL)
279 return info->fdt_addr;
286 * Information required to load data from a device
288 * @dev: Pointer to the device, e.g. struct mmc *
289 * @priv: Private data for the device
290 * @bl_len: Block length for reading in bytes
291 * @filename: Name of the fit image file.
292 * @read: Function to call to read from the device
294 struct spl_load_info {
298 const char *filename;
300 * read() - Read from device
302 * @load: Information about the load state
303 * @sector: Sector number to read from (each @load->bl_len bytes)
304 * @count: Number of sectors to read
305 * @buf: Buffer to read into
306 * @return number of sectors read, 0 on error
308 ulong (*read)(struct spl_load_info *load, ulong sector, ulong count,
313 * We need to know the position of U-Boot in memory so we can jump to it. We
314 * allow any U-Boot binary to be used (u-boot.bin, u-boot-nodtb.bin,
315 * u-boot.img), hence the '_any'. These is no checking here that the correct
316 * image is found. For example if u-boot.img is used we don't check that
317 * spl_parse_image_header() can parse a valid header.
319 * Similarly for SPL, so that TPL can jump to SPL.
321 binman_sym_extern(ulong, u_boot_any, image_pos);
322 binman_sym_extern(ulong, u_boot_any, size);
323 binman_sym_extern(ulong, u_boot_spl_any, image_pos);
324 binman_sym_extern(ulong, u_boot_spl_any, size);
325 binman_sym_extern(ulong, u_boot_vpl_any, image_pos);
326 binman_sym_extern(ulong, u_boot_vpl_any, size);
329 * spl_get_image_pos() - get the image position of the next phase
331 * This returns the image position to use to load the next phase of U-Boot
333 ulong spl_get_image_pos(void);
336 * spl_get_image_size() - get the size of the next phase
338 * This returns the size to use to load the next phase of U-Boot
340 ulong spl_get_image_size(void);
343 * spl_get_image_text_base() - get the text base of the next phase
345 * This returns the address that the next stage is linked to run at, i.e.
346 * CONFIG_SPL_TEXT_BASE or CONFIG_TEXT_BASE
348 * Return: text-base address
350 ulong spl_get_image_text_base(void);
353 * spl_load_simple_fit_skip_processing() - Hook to allow skipping the FIT
354 * image processing during spl_load_simple_fit().
356 * Return true to skip FIT processing, false to preserve the full code flow
357 * of spl_load_simple_fit().
359 bool spl_load_simple_fit_skip_processing(void);
362 * spl_load_simple_fit_fix_load() - Hook to make fixes
363 * after fit image header is loaded
365 * Returns pointer to fit
367 void *spl_load_simple_fit_fix_load(const void *fit);
370 * spl_load_simple_fit() - Loads a fit image from a device.
371 * @spl_image: Image description to set up
372 * @info: Structure containing the information required to load data.
373 * @sector: Sector number where FIT image is located in the device
374 * @fdt: Pointer to the copied FIT header.
376 * Reads the FIT image @sector in the device. Loads u-boot image to
377 * specified load address and copies the dtb to end of u-boot image.
378 * Returns 0 on success.
380 int spl_load_simple_fit(struct spl_image_info *spl_image,
381 struct spl_load_info *info, ulong sector, void *fdt);
383 #define SPL_COPY_PAYLOAD_ONLY 1
384 #define SPL_FIT_FOUND 2
387 * spl_load_legacy_img() - Loads a legacy image from a device.
388 * @spl_image: Image description to set up
389 * @load: Structure containing the information required to load data.
390 * @offset: Pointer to image
391 * @hdr: Pointer to image header
393 * Reads an legacy image from the device. Loads u-boot image to
394 * specified load address.
395 * Returns 0 on success.
397 int spl_load_legacy_img(struct spl_image_info *spl_image,
398 struct spl_boot_device *bootdev,
399 struct spl_load_info *load, ulong offset,
400 struct legacy_img_hdr *hdr);
404 * spl_load_imx_container() - Loads a imx container image from a device.
405 * @spl_image: Image description to set up
406 * @info: Structure containing the information required to load data.
407 * @sector: Sector number where container image is located in the device
409 * Reads the container image @sector in the device. Loads u-boot image to
410 * specified load address.
412 int spl_load_imx_container(struct spl_image_info *spl_image,
413 struct spl_load_info *info, ulong sector);
415 /* SPL common functions */
416 void preloader_console_init(void);
417 u32 spl_boot_device(void);
420 * spl_spi_boot_bus() - Lookup function for the SPI boot bus source.
422 * This function returns the SF bus to load from.
423 * If not overridden, it is weakly defined in common/spl/spl_spi.c.
425 u32 spl_spi_boot_bus(void);
428 * spl_spi_boot_cs() - Lookup function for the SPI boot CS source.
430 * This function returns the SF CS to load from.
431 * If not overridden, it is weakly defined in common/spl/spl_spi.c.
433 u32 spl_spi_boot_cs(void);
436 * spl_mmc_boot_mode() - Lookup function for the mode of an MMC boot source.
437 * @boot_device: ID of the device which the MMC driver wants to read
438 * from. Common values are e.g. BOOT_DEVICE_MMC1,
439 * BOOT_DEVICE_MMC2, BOOT_DEVICE_MMC2_2.
441 * This function should return one of MMCSD_MODE_FS, MMCSD_MODE_EMMCBOOT, or
442 * MMCSD_MODE_RAW for each MMC boot source which is defined for the target. The
443 * boot_device parameter tells which device the MMC driver is interested in.
445 * If not overridden, it is weakly defined in common/spl/spl_mmc.c.
447 * Note: It is important to use the boot_device parameter instead of e.g.
448 * spl_boot_device() as U-Boot is not always loaded from the same device as SPL.
450 u32 spl_mmc_boot_mode(struct mmc *mmc, const u32 boot_device);
453 * spl_mmc_boot_partition() - MMC partition to load U-Boot from.
454 * @boot_device: ID of the device which the MMC driver wants to load
457 * This function should return the partition number which the SPL
458 * should load U-Boot from (on the given boot_device) when
459 * CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION is set.
461 * If not overridden, it is weakly defined in common/spl/spl_mmc.c.
463 int spl_mmc_boot_partition(const u32 boot_device);
467 * default_spl_mmc_emmc_boot_partition() - eMMC boot partition to load U-Boot from.
468 * mmc: Pointer for the mmc device structure
470 * This function should return the eMMC boot partition number which
471 * the SPL should load U-Boot from (on the given boot_device).
473 int default_spl_mmc_emmc_boot_partition(struct mmc *mmc);
476 * spl_mmc_emmc_boot_partition() - eMMC boot partition to load U-Boot from.
477 * mmc: Pointer for the mmc device structure
479 * This function should return the eMMC boot partition number which
480 * the SPL should load U-Boot from (on the given boot_device).
482 * If not overridden, it is weakly defined in common/spl/spl_mmc.c
483 * and calls default_spl_mmc_emmc_boot_partition();
485 int spl_mmc_emmc_boot_partition(struct mmc *mmc);
487 void spl_set_bd(void);
490 * spl_mmc_get_uboot_raw_sector() - Provide raw sector of the start of U-Boot
492 * This is a weak function which by default will provide the raw sector that is
493 * where the start of the U-Boot image has been written to.
495 * @mmc: struct mmc that describes the devie where U-Boot resides
496 * @raw_sect: The raw sector number where U-Boot is by default.
497 * Return: The raw sector location that U-Boot resides at
499 unsigned long spl_mmc_get_uboot_raw_sector(struct mmc *mmc,
500 unsigned long raw_sect);
503 * spl_set_header_raw_uboot() - Set up a standard SPL image structure
505 * This sets up the given spl_image which the standard values obtained from
506 * config options: CONFIG_SYS_MONITOR_LEN, CONFIG_SYS_UBOOT_START,
509 * @spl_image: Image description to set up
511 void spl_set_header_raw_uboot(struct spl_image_info *spl_image);
514 * spl_parse_image_header() - parse the image header and set up info
516 * This parses the legacy image header information at @header and sets up
517 * @spl_image according to what is found. If no image header is found, then
518 * a raw image or bootz is assumed. If CONFIG_SPL_PANIC_ON_RAW_IMAGE is
519 * enabled, then this causes a panic. If CONFIG_SPL_RAW_IMAGE_SUPPORT is not
520 * enabled then U-Boot gives up. Otherwise U-Boot sets up the image using
521 * spl_set_header_raw_uboot(), or possibly the bootz header.
523 * @spl_image: Image description to set up
524 * @header image header to parse
525 * Return: 0 if a header was correctly parsed, -ve on error
527 int spl_parse_image_header(struct spl_image_info *spl_image,
528 const struct spl_boot_device *bootdev,
529 const struct legacy_img_hdr *header);
531 void spl_board_prepare_for_linux(void);
534 * spl_board_prepare_for_optee() - Prepare board for an OPTEE payload
536 * Prepares the board for booting an OP-TEE payload. Initialization is platform
537 * specific, and may include configuring the TrustZone memory, and other
538 * initialization steps required by OP-TEE.
539 * Note that @fdt is not used directly by OP-TEE. OP-TEE passes this @fdt to
540 * its normal world target. This target is not guaranteed to be u-boot, so @fdt
541 * changes that would normally be done by u-boot should be done in this step.
543 * @fdt: Devicetree that will be passed on, or NULL
545 void spl_board_prepare_for_optee(void *fdt);
546 void spl_board_prepare_for_boot(void);
547 int spl_board_ubi_load_image(u32 boot_device);
548 int spl_board_boot_device(enum boot_device boot_dev_spl);
551 * spl_board_loader_name() - Return a name for the loader
553 * This is a weak function which might be overridden by the board code. With
554 * that a board specific value for the device where the U-Boot will be loaded
555 * from can be set. By default it returns NULL.
557 * @boot_device: ID of the device which SPL wants to load U-Boot from.
559 const char *spl_board_loader_name(u32 boot_device);
562 * jump_to_image_linux() - Jump to a Linux kernel from SPL
564 * This jumps into a Linux kernel using the information in @spl_image.
566 * @spl_image: Image description to set up
568 void __noreturn jump_to_image_linux(struct spl_image_info *spl_image);
571 * jump_to_image_optee() - Jump to OP-TEE OS from SPL
573 * This jumps into OP-TEE OS using the information in @spl_image.
575 * @spl_image: Image description to set up
577 void __noreturn jump_to_image_optee(struct spl_image_info *spl_image);
580 * spl_start_uboot() - Check if SPL should start the kernel or U-Boot
582 * This is called by the various SPL loaders to determine whether the board
583 * wants to load the kernel or U-Boot. This function should be provided by
586 * Return: 0 if SPL should start the kernel, 1 if U-Boot must be started
588 int spl_start_uboot(void);
591 * spl_display_print() - Display a board-specific message in SPL
593 * If CONFIG_SPL_DISPLAY_PRINT is enabled, U-Boot will call this function
594 * immediately after displaying the SPL console banner ("U-Boot SPL ...").
595 * This function should be provided by the board.
597 void spl_display_print(void);
600 * struct spl_boot_device - Describes a boot device used by SPL
602 * @boot_device: A number indicating the BOOT_DEVICE type. There are various
603 * BOOT_DEVICE... #defines and enums in U-Boot and they are not consistently
605 * @boot_device_name: Named boot device, or NULL if none.
607 * Note: Additional fields can be added here, bearing in mind that SPL is
608 * size-sensitive and common fields will be present on all boards. This
609 * struct can also be used to return additional information about the load
610 * process if that becomes useful.
612 struct spl_boot_device {
614 const char *boot_device_name;
618 * Holds information about a way of loading an SPL image
620 * @name: User-friendly name for this method (e.g. "MMC")
621 * @boot_device: Boot device that this loader supports
622 * @load_image: Function to call to load image
624 struct spl_image_loader {
625 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
630 * load_image() - Load an SPL image
632 * @spl_image: place to put image information
633 * @bootdev: describes the boot device to load from
635 int (*load_image)(struct spl_image_info *spl_image,
636 struct spl_boot_device *bootdev);
639 /* Helper function for accessing the name */
640 static inline const char *spl_loader_name(const struct spl_image_loader *loader)
642 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
644 name = spl_board_loader_name(loader->boot_device);
645 return name ?: loader->name;
651 /* Declare an SPL image loader */
652 #define SPL_LOAD_IMAGE(__name) \
653 ll_entry_declare(struct spl_image_loader, __name, spl_image_loader)
656 * _priority is the priority of this method, 0 meaning it will be the top
657 * choice for this device, 9 meaning it is the bottom choice.
658 * _boot_device is the BOOT_DEVICE_... value
659 * _method is the load_image function to call
661 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
662 #define SPL_LOAD_IMAGE_METHOD(_name, _priority, _boot_device, _method) \
663 SPL_LOAD_IMAGE(_boot_device ## _priority ## _method) = { \
665 .boot_device = _boot_device, \
666 .load_image = _method, \
669 #define SPL_LOAD_IMAGE_METHOD(_name, _priority, _boot_device, _method) \
670 SPL_LOAD_IMAGE(_boot_device ## _priority ## _method) = { \
671 .boot_device = _boot_device, \
672 .load_image = _method, \
676 /* SPL FAT image functions */
677 int spl_load_image_fat(struct spl_image_info *spl_image,
678 struct spl_boot_device *bootdev,
679 struct blk_desc *block_dev, int partition,
680 const char *filename);
681 int spl_load_image_fat_os(struct spl_image_info *spl_image,
682 struct spl_boot_device *bootdev,
683 struct blk_desc *block_dev, int partition);
685 void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image);
687 /* SPL EXT image functions */
688 int spl_load_image_ext(struct spl_image_info *spl_image,
689 struct spl_boot_device *bootdev,
690 struct blk_desc *block_dev, int partition,
691 const char *filename);
692 int spl_load_image_ext_os(struct spl_image_info *spl_image,
693 struct spl_boot_device *bootdev,
694 struct blk_desc *block_dev, int partition);
695 int spl_blk_load_image(struct spl_image_info *spl_image,
696 struct spl_boot_device *bootdev,
697 enum uclass_id uclass_id, int devnum, int partnum);
700 * spl_early_init() - Set up device tree and driver model in SPL if enabled
702 * Call this function in board_init_f() if you want to use device tree and
703 * driver model early, before board_init_r() is called.
705 * If this is not called, then driver model will be inactive in SPL's
706 * board_init_f(), and no device tree will be available.
708 int spl_early_init(void);
711 * spl_init() - Set up device tree and driver model in SPL if enabled
713 * You can optionally call spl_early_init(), then optionally call spl_init().
714 * This function will be called from board_init_r() if not called earlier.
716 * Both spl_early_init() and spl_init() perform a similar function except that
717 * the latter will not set up the malloc() area if
718 * CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN is enabled, since it is assumed to
719 * already be done by a calll to spl_relocate_stack_gd() before board_init_r()
722 * This function will be called from board_init_r() if not called earlier.
724 * If this is not called, then driver model will be inactive in SPL's
725 * board_init_f(), and no device tree will be available.
730 * spl_board_init() - Do board-specific init in SPL
732 * If xPL_BOARD_INIT is enabled, this is called from board_init_r() before
733 * jumping to the next phase.
735 void spl_board_init(void);
738 * spl_was_boot_source() - check if U-Boot booted from SPL
740 * This will normally be true, but if U-Boot jumps to second U-Boot, it will
741 * be false. This should be implemented by board-specific code.
743 * Return: true if U-Boot booted from SPL, else false
745 bool spl_was_boot_source(void);
748 * spl_dfu_cmd- run dfu command with chosen mmc device interface
749 * @param usb_index - usb controller number
750 * @param mmc_dev - mmc device nubmer
752 * Return: 0 on success, otherwise error code
754 int spl_dfu_cmd(int usbctrl, char *dfu_alt_info, char *interface, char *devstr);
756 int spl_mmc_load_image(struct spl_image_info *spl_image,
757 struct spl_boot_device *bootdev);
760 * spl_mmc_load() - Load an image file from MMC/SD media
762 * @param spl_image Image data filled in by loading process
763 * @param bootdev Describes which device to load from
764 * @param filename Name of file to load (in FS mode)
765 * @param raw_part Partition to load from (in RAW mode)
766 * @param raw_sect Sector to load from (in RAW mode)
768 * Return: 0 on success, otherwise error code
770 int spl_mmc_load(struct spl_image_info *spl_image,
771 struct spl_boot_device *bootdev,
772 const char *filename,
774 unsigned long raw_sect);
777 * spl_usb_load() - Load an image file from USB mass storage
779 * @param spl_image Image data filled in by loading process
780 * @param bootdev Describes which device to load from
781 * @param raw_part Fat partition to load from
782 * @param filename Name of file to load
784 * Return: 0 on success, otherwise error code
786 int spl_usb_load(struct spl_image_info *spl_image,
787 struct spl_boot_device *bootdev,
788 int partition, const char *filename);
790 int spl_ymodem_load_image(struct spl_image_info *spl_image,
791 struct spl_boot_device *bootdev);
794 * spl_invoke_atf - boot using an ARM trusted firmware image
796 void spl_invoke_atf(struct spl_image_info *spl_image);
799 * bl2_plat_get_bl31_params() - return params for bl31.
800 * @bl32_entry: address of BL32 executable (secure)
801 * @bl33_entry: address of BL33 executable (non secure)
802 * @fdt_addr: address of Flat Device Tree
804 * This is a weak function which might be overridden by the board code. By
805 * default it will just call bl2_plat_get_bl31_params_default().
807 * If you just want to manipulate or add some parameters, you can override
808 * this function, call bl2_plat_get_bl31_params_default and operate on the
809 * returned bl31 params.
811 * Return: bl31 params structure pointer
813 struct bl31_params *bl2_plat_get_bl31_params(uintptr_t bl32_entry,
814 uintptr_t bl33_entry,
818 * bl2_plat_get_bl31_params_default() - prepare params for bl31.
819 * @bl32_entry: address of BL32 executable (secure)
820 * @bl33_entry: address of BL33 executable (non secure)
821 * @fdt_addr: address of Flat Device Tree
823 * This is the default implementation of bl2_plat_get_bl31_params(). It assigns
824 * a pointer to the memory that the platform has kept aside to pass platform
825 * specific and trusted firmware related information to BL31. This memory is
826 * allocated by allocating memory to bl2_to_bl31_params_mem structure which is
827 * a superset of all the structure whose information is passed to BL31
829 * NOTE: The memory is statically allocated, thus this function should be
830 * called only once. All subsequent calls will overwrite any changes.
832 * Return: bl31 params structure pointer
834 struct bl31_params *bl2_plat_get_bl31_params_default(uintptr_t bl32_entry,
835 uintptr_t bl33_entry,
839 * bl2_plat_get_bl31_params_v2() - return params for bl31
840 * @bl32_entry: address of BL32 executable (secure)
841 * @bl33_entry: address of BL33 executable (non secure)
842 * @fdt_addr: address of Flat Device Tree
844 * This function does the same as bl2_plat_get_bl31_params() except that is is
845 * used for the new LOAD_IMAGE_V2 option, which uses a slightly different
846 * method to pass the parameters.
848 * Return: bl31 params structure pointer
850 struct bl_params *bl2_plat_get_bl31_params_v2(uintptr_t bl32_entry,
851 uintptr_t bl33_entry,
855 * bl2_plat_get_bl31_params_v2_default() - prepare params for bl31.
856 * @bl32_entry: address of BL32 executable (secure)
857 * @bl33_entry: address of BL33 executable (non secure)
858 * @fdt_addr: address of Flat Device Tree
860 * This is the default implementation of bl2_plat_get_bl31_params_v2(). It
861 * prepares the linked list of the bl31 params, populates the image types and
862 * set the entry points for bl32 and bl33 (if available).
864 * NOTE: The memory is statically allocated, thus this function should be
865 * called only once. All subsequent calls will overwrite any changes.
867 * Return: bl31 params structure pointer
869 struct bl_params *bl2_plat_get_bl31_params_v2_default(uintptr_t bl32_entry,
870 uintptr_t bl33_entry,
873 * spl_optee_entry - entry function for optee
875 * args defind in op-tee project
876 * https://github.com/OP-TEE/optee_os/
877 * core/arch/arm/kernel/generic_entry_a32.S
879 * @arg1: (ARMv7 standard bootarg #1)
880 * @arg2: device tree address, (ARMv7 standard bootarg #2)
881 * @arg3: non-secure entry address (ARMv7 bootarg #0)
883 void __noreturn spl_optee_entry(void *arg0, void *arg1, void *arg2, void *arg3);
886 * spl_invoke_opensbi - boot using a RISC-V OpenSBI image
888 void __noreturn spl_invoke_opensbi(struct spl_image_info *spl_image);
891 * board_return_to_bootrom - allow for boards to continue with the boot ROM
893 * If a board (e.g. the Rockchip RK3368 boards) provide some
894 * supporting functionality for SPL in their boot ROM and the SPL
895 * stage wants to return to the ROM code to continue booting, boards
896 * can implement 'board_return_to_bootrom'.
898 int board_return_to_bootrom(struct spl_image_info *spl_image,
899 struct spl_boot_device *bootdev);
902 * board_spl_fit_size_align - specific size align before processing payload
905 ulong board_spl_fit_size_align(ulong size);
908 * spl_perform_fixups() - arch/board-specific callback before processing
911 void spl_perform_fixups(struct spl_image_info *spl_image);
914 * spl_get_load_buffer() - get buffer for loading partial image data
916 * Returns memory area which can be populated by partial image data,
917 * ie. uImage or fitImage header.
919 struct legacy_img_hdr *spl_get_load_buffer(ssize_t offset, size_t size);
921 void board_boot_order(u32 *spl_boot_list);
922 void spl_save_restore_data(void);
925 * spl_load_fit_image() - Fully parse and a FIT image in SPL
927 * @spl_image: SPL Image data to fill in
928 * @header: Pointer to FIT image
929 * Return 0 if OK, -ve on error
931 int spl_load_fit_image(struct spl_image_info *spl_image,
932 const struct legacy_img_hdr *header);
935 * spl_decompression_enabled() - check decompression support is enabled for SPL build
937 * Returns true if decompression support is enabled, else False
939 static inline bool spl_decompression_enabled(void)
941 return IS_ENABLED(CONFIG_SPL_GZIP) || IS_ENABLED(CONFIG_SPL_LZMA);