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>
21 /* Value in r0 indicates we booted from U-Boot */
22 #define UBOOT_NOT_LOADED_FROM_SPL 0x13578642
25 #define MMCSD_MODE_UNDEFINED 0
26 #define MMCSD_MODE_RAW 1
27 #define MMCSD_MODE_FS 2
28 #define MMCSD_MODE_EMMCBOOT 3
34 * u_boot_first_phase() - check if this is the first U-Boot phase
36 * U-Boot has up to three phases: TPL, SPL and U-Boot proper. Depending on the
37 * build flags we can determine whether the current build is for the first
38 * phase of U-Boot or not. If there is no SPL, then this is U-Boot proper. If
39 * there is SPL but no TPL, the the first phase is SPL. If there is TPL, then
40 * it is the first phase.
42 * @returns true if this is the first phase of U-Boot
45 static inline bool u_boot_first_phase(void)
47 if (IS_ENABLED(CONFIG_TPL)) {
48 if (IS_ENABLED(CONFIG_TPL_BUILD))
50 } else if (IS_ENABLED(CONFIG_SPL)) {
51 if (IS_ENABLED(CONFIG_SPL_BUILD))
61 PHASE_NONE, /* Invalid phase, signifying before U-Boot */
62 PHASE_TPL, /* Running in TPL */
63 PHASE_SPL, /* Running in SPL */
64 PHASE_BOARD_F, /* Running in U-Boot before relocation */
65 PHASE_BOARD_R, /* Running in U-Boot after relocation */
69 * spl_phase() - Find out the phase of U-Boot
71 * This can be used to avoid #ifdef logic and use if() instead.
73 * For example, to include code only in TPL, you might do:
75 * #ifdef CONFIG_TPL_BUILD
79 * but with this you can use:
81 * if (spl_phase() == PHASE_TPL) {
85 * To include code only in SPL, you might do:
87 * #if defined(CONFIG_SPL_BUILD) && !defined(CONFIG_TPL_BUILD)
91 * but with this you can use:
93 * if (spl_phase() == PHASE_SPL) {
97 * To include code only in U-Boot proper, you might do:
99 * #ifndef CONFIG_SPL_BUILD
103 * but with this you can use:
105 * if (spl_phase() == PHASE_BOARD_F) {
109 * @return U-Boot phase
111 static inline enum u_boot_phase spl_phase(void)
113 #ifdef CONFIG_TPL_BUILD
115 #elif CONFIG_SPL_BUILD
118 DECLARE_GLOBAL_DATA_PTR;
120 if (!(gd->flags & GD_FLG_RELOC))
121 return PHASE_BOARD_F;
123 return PHASE_BOARD_R;
128 * spl_prev_phase() - Figure out the previous U-Boot phase
130 * @return the previous phase from this one, e.g. if called in SPL this returns
131 * PHASE_TPL, if TPL is enabled
133 static inline enum u_boot_phase spl_prev_phase(void)
135 #ifdef CONFIG_TPL_BUILD
137 #elif defined(CONFIG_SPL_BUILD)
138 return IS_ENABLED(CONFIG_TPL) ? PHASE_TPL : PHASE_NONE;
140 return IS_ENABLED(CONFIG_SPL) ? PHASE_SPL : PHASE_NONE;
145 * spl_next_phase() - Figure out the next U-Boot phase
147 * @return the next phase from this one, e.g. if called in TPL this returns
150 static inline enum u_boot_phase spl_next_phase(void)
152 #ifdef CONFIG_TPL_BUILD
155 return PHASE_BOARD_F;
160 * spl_phase_name() - Get the name of the current phase
164 static inline const char *spl_phase_name(enum u_boot_phase phase)
180 * spl_phase_prefix() - Get the prefix of the current phase
182 * @phase: Phase to look up
183 * @return phase prefix ("spl", "tpl", etc.)
185 static inline const char *spl_phase_prefix(enum u_boot_phase phase)
200 /* A string name for SPL or TPL */
201 #ifdef CONFIG_SPL_BUILD
202 # ifdef CONFIG_TPL_BUILD
203 # define SPL_TPL_NAME "TPL"
205 # define SPL_TPL_NAME "SPL"
207 # define SPL_TPL_PROMPT SPL_TPL_NAME ": "
209 # define SPL_TPL_NAME ""
210 # define SPL_TPL_PROMPT ""
213 struct spl_image_info {
217 uintptr_t entry_point;
218 #if CONFIG_IS_ENABLED(LOAD_FIT) || CONFIG_IS_ENABLED(LOAD_FIT_FULL)
226 #ifdef CONFIG_SPL_LEGACY_IMAGE_CRC_CHECK
234 * Information required to load data from a device
236 * @dev: Pointer to the device, e.g. struct mmc *
237 * @priv: Private data for the device
238 * @bl_len: Block length for reading in bytes
239 * @filename: Name of the fit image file.
240 * @read: Function to call to read from the device
242 struct spl_load_info {
246 const char *filename;
248 * read() - Read from device
250 * @load: Information about the load state
251 * @sector: Sector number to read from (each @load->bl_len bytes)
252 * @count: Number of sectors to read
253 * @buf: Buffer to read into
254 * @return number of sectors read, 0 on error
256 ulong (*read)(struct spl_load_info *load, ulong sector, ulong count,
261 * We need to know the position of U-Boot in memory so we can jump to it. We
262 * allow any U-Boot binary to be used (u-boot.bin, u-boot-nodtb.bin,
263 * u-boot.img), hence the '_any'. These is no checking here that the correct
264 * image is found. For example if u-boot.img is used we don't check that
265 * spl_parse_image_header() can parse a valid header.
267 * Similarly for SPL, so that TPL can jump to SPL.
269 binman_sym_extern(ulong, u_boot_any, image_pos);
270 binman_sym_extern(ulong, u_boot_any, size);
271 binman_sym_extern(ulong, spl, image_pos);
272 binman_sym_extern(ulong, spl, size);
275 * spl_get_image_pos() - get the image position of the next phase
277 * This returns the image position to use to load the next phase of U-Boot
279 ulong spl_get_image_pos(void);
282 * spl_get_image_size() - get the size of the next phase
284 * This returns the size to use to load the next phase of U-Boot
286 ulong spl_get_image_size(void);
289 * spl_get_image_text_base() - get the text base of the next phase
291 * This returns the address that the next stage is linked to run at, i.e.
292 * CONFIG_SPL_TEXT_BASE or CONFIG_SYS_TEXT_BASE
294 * @return text-base address
296 ulong spl_get_image_text_base(void);
299 * spl_load_simple_fit_skip_processing() - Hook to allow skipping the FIT
300 * image processing during spl_load_simple_fit().
302 * Return true to skip FIT processing, false to preserve the full code flow
303 * of spl_load_simple_fit().
305 bool spl_load_simple_fit_skip_processing(void);
308 * spl_load_simple_fit_fix_load() - Hook to make fixes
309 * after fit image header is loaded
311 * Returns pointer to fit
313 void *spl_load_simple_fit_fix_load(const void *fit);
316 * spl_load_simple_fit() - Loads a fit image from a device.
317 * @spl_image: Image description to set up
318 * @info: Structure containing the information required to load data.
319 * @sector: Sector number where FIT image is located in the device
320 * @fdt: Pointer to the copied FIT header.
322 * Reads the FIT image @sector in the device. Loads u-boot image to
323 * specified load address and copies the dtb to end of u-boot image.
324 * Returns 0 on success.
326 int spl_load_simple_fit(struct spl_image_info *spl_image,
327 struct spl_load_info *info, ulong sector, void *fdt);
329 #define SPL_COPY_PAYLOAD_ONLY 1
330 #define SPL_FIT_FOUND 2
333 * spl_load_legacy_img() - Loads a legacy image from a device.
334 * @spl_image: Image description to set up
335 * @load: Structure containing the information required to load data.
336 * @header: Pointer to image header (including appended image)
338 * Reads an legacy image from the device. Loads u-boot image to
339 * specified load address.
340 * Returns 0 on success.
342 int spl_load_legacy_img(struct spl_image_info *spl_image,
343 struct spl_load_info *load, ulong header);
346 * spl_load_imx_container() - Loads a imx container image from a device.
347 * @spl_image: Image description to set up
348 * @info: Structure containing the information required to load data.
349 * @sector: Sector number where container image is located in the device
351 * Reads the container image @sector in the device. Loads u-boot image to
352 * specified load address.
354 int spl_load_imx_container(struct spl_image_info *spl_image,
355 struct spl_load_info *info, ulong sector);
357 /* SPL common functions */
358 void preloader_console_init(void);
359 u32 spl_boot_device(void);
362 * spl_mmc_boot_mode() - Lookup function for the mode of an MMC boot source.
363 * @boot_device: ID of the device which the MMC driver wants to read
364 * from. Common values are e.g. BOOT_DEVICE_MMC1,
365 * BOOT_DEVICE_MMC2, BOOT_DEVICE_MMC2_2.
367 * This function should return one of MMCSD_MODE_FS, MMCSD_MODE_EMMCBOOT, or
368 * MMCSD_MODE_RAW for each MMC boot source which is defined for the target. The
369 * boot_device parameter tells which device the MMC driver is interested in.
371 * If not overridden, it is weakly defined in common/spl/spl_mmc.c.
373 * Note: It is important to use the boot_device parameter instead of e.g.
374 * spl_boot_device() as U-Boot is not always loaded from the same device as SPL.
376 u32 spl_mmc_boot_mode(const u32 boot_device);
379 * spl_mmc_boot_partition() - MMC partition to load U-Boot from.
380 * @boot_device: ID of the device which the MMC driver wants to load
383 * This function should return the partition number which the SPL
384 * should load U-Boot from (on the given boot_device) when
385 * CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION is set.
387 * If not overridden, it is weakly defined in common/spl/spl_mmc.c.
389 int spl_mmc_boot_partition(const u32 boot_device);
393 * default_spl_mmc_emmc_boot_partition() - eMMC boot partition to load U-Boot from.
394 * mmc: Pointer for the mmc device structure
396 * This function should return the eMMC boot partition number which
397 * the SPL should load U-Boot from (on the given boot_device).
399 int default_spl_mmc_emmc_boot_partition(struct mmc *mmc);
402 * spl_mmc_emmc_boot_partition() - eMMC boot partition to load U-Boot from.
403 * mmc: Pointer for the mmc device structure
405 * This function should return the eMMC boot partition number which
406 * the SPL should load U-Boot from (on the given boot_device).
408 * If not overridden, it is weakly defined in common/spl/spl_mmc.c
409 * and calls default_spl_mmc_emmc_boot_partition();
411 int spl_mmc_emmc_boot_partition(struct mmc *mmc);
413 void spl_set_bd(void);
416 * spl_set_header_raw_uboot() - Set up a standard SPL image structure
418 * This sets up the given spl_image which the standard values obtained from
419 * config options: CONFIG_SYS_MONITOR_LEN, CONFIG_SYS_UBOOT_START,
420 * CONFIG_SYS_TEXT_BASE.
422 * @spl_image: Image description to set up
424 void spl_set_header_raw_uboot(struct spl_image_info *spl_image);
427 * spl_parse_image_header() - parse the image header and set up info
429 * This parses the legacy image header information at @header and sets up
430 * @spl_image according to what is found. If no image header is found, then
431 * a raw image or bootz is assumed. If CONFIG_SPL_PANIC_ON_RAW_IMAGE is
432 * enabled, then this causes a panic. If CONFIG_SPL_RAW_IMAGE_SUPPORT is not
433 * enabled then U-Boot gives up. Otherwise U-Boot sets up the image using
434 * spl_set_header_raw_uboot(), or possibly the bootz header.
436 * @spl_image: Image description to set up
437 * @header image header to parse
438 * @return 0 if a header was correctly parsed, -ve on error
440 int spl_parse_image_header(struct spl_image_info *spl_image,
441 const struct image_header *header);
443 void spl_board_prepare_for_linux(void);
446 * spl_board_prepare_for_optee() - Prepare board for an OPTEE payload
448 * Prepares the board for booting an OP-TEE payload. Initialization is platform
449 * specific, and may include configuring the TrustZone memory, and other
450 * initialization steps required by OP-TEE.
451 * Note that @fdt is not used directly by OP-TEE. OP-TEE passes this @fdt to
452 * its normal world target. This target is not guaranteed to be u-boot, so @fdt
453 * changes that would normally be done by u-boot should be done in this step.
455 * @fdt: Devicetree that will be passed on, or NULL
457 void spl_board_prepare_for_optee(void *fdt);
458 void spl_board_prepare_for_boot(void);
459 int spl_board_ubi_load_image(u32 boot_device);
460 int spl_board_boot_device(u32 boot_device);
463 * jump_to_image_linux() - Jump to a Linux kernel from SPL
465 * This jumps into a Linux kernel using the information in @spl_image.
467 * @spl_image: Image description to set up
469 void __noreturn jump_to_image_linux(struct spl_image_info *spl_image);
472 * spl_start_uboot() - Check if SPL should start the kernel or U-Boot
474 * This is called by the various SPL loaders to determine whether the board
475 * wants to load the kernel or U-Boot. This function should be provided by
478 * @return 0 if SPL should start the kernel, 1 if U-Boot must be started
480 int spl_start_uboot(void);
483 * spl_display_print() - Display a board-specific message in SPL
485 * If CONFIG_SPL_DISPLAY_PRINT is enabled, U-Boot will call this function
486 * immediately after displaying the SPL console banner ("U-Boot SPL ...").
487 * This function should be provided by the board.
489 void spl_display_print(void);
492 * struct spl_boot_device - Describes a boot device used by SPL
494 * @boot_device: A number indicating the BOOT_DEVICE type. There are various
495 * BOOT_DEVICE... #defines and enums in U-Boot and they are not consistently
497 * @boot_device_name: Named boot device, or NULL if none.
499 * Note: Additional fields can be added here, bearing in mind that SPL is
500 * size-sensitive and common fields will be present on all boards. This
501 * struct can also be used to return additional information about the load
502 * process if that becomes useful.
504 struct spl_boot_device {
506 const char *boot_device_name;
510 * Holds information about a way of loading an SPL image
512 * @name: User-friendly name for this method (e.g. "MMC")
513 * @boot_device: Boot device that this loader supports
514 * @load_image: Function to call to load image
516 struct spl_image_loader {
517 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
522 * load_image() - Load an SPL image
524 * @spl_image: place to put image information
525 * @bootdev: describes the boot device to load from
527 int (*load_image)(struct spl_image_info *spl_image,
528 struct spl_boot_device *bootdev);
531 /* Helper function for accessing the name */
532 static inline const char *spl_loader_name(const struct spl_image_loader *loader)
534 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
541 /* Declare an SPL image loader */
542 #define SPL_LOAD_IMAGE(__name) \
543 ll_entry_declare(struct spl_image_loader, __name, spl_image_loader)
546 * _priority is the priority of this method, 0 meaning it will be the top
547 * choice for this device, 9 meaning it is the bottom choice.
548 * _boot_device is the BOOT_DEVICE_... value
549 * _method is the load_image function to call
551 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
552 #define SPL_LOAD_IMAGE_METHOD(_name, _priority, _boot_device, _method) \
553 SPL_LOAD_IMAGE(_boot_device ## _priority ## _method) = { \
555 .boot_device = _boot_device, \
556 .load_image = _method, \
559 #define SPL_LOAD_IMAGE_METHOD(_name, _priority, _boot_device, _method) \
560 SPL_LOAD_IMAGE(_boot_device ## _priority ## _method) = { \
561 .boot_device = _boot_device, \
562 .load_image = _method, \
566 /* SPL FAT image functions */
567 int spl_load_image_fat(struct spl_image_info *spl_image,
568 struct blk_desc *block_dev, int partition,
569 const char *filename);
570 int spl_load_image_fat_os(struct spl_image_info *spl_image,
571 struct blk_desc *block_dev, int partition);
573 void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image);
575 /* SPL EXT image functions */
576 int spl_load_image_ext(struct spl_image_info *spl_image,
577 struct blk_desc *block_dev, int partition,
578 const char *filename);
579 int spl_load_image_ext_os(struct spl_image_info *spl_image,
580 struct blk_desc *block_dev, int partition);
583 * spl_early_init() - Set up device tree and driver model in SPL if enabled
585 * Call this function in board_init_f() if you want to use device tree and
586 * driver model early, before board_init_r() is called.
588 * If this is not called, then driver model will be inactive in SPL's
589 * board_init_f(), and no device tree will be available.
591 int spl_early_init(void);
594 * spl_init() - Set up device tree and driver model in SPL if enabled
596 * You can optionally call spl_early_init(), then optionally call spl_init().
597 * This function will be called from board_init_r() if not called earlier.
599 * Both spl_early_init() and spl_init() perform a similar function except that
600 * the latter will not set up the malloc() area if
601 * CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN is enabled, since it is assumed to
602 * already be done by a calll to spl_relocate_stack_gd() before board_init_r()
605 * This function will be called from board_init_r() if not called earlier.
607 * If this is not called, then driver model will be inactive in SPL's
608 * board_init_f(), and no device tree will be available.
612 #ifdef CONFIG_SPL_BOARD_INIT
613 void spl_board_init(void);
617 * spl_was_boot_source() - check if U-Boot booted from SPL
619 * This will normally be true, but if U-Boot jumps to second U-Boot, it will
620 * be false. This should be implemented by board-specific code.
622 * @return true if U-Boot booted from SPL, else false
624 bool spl_was_boot_source(void);
627 * spl_dfu_cmd- run dfu command with chosen mmc device interface
628 * @param usb_index - usb controller number
629 * @param mmc_dev - mmc device nubmer
631 * @return 0 on success, otherwise error code
633 int spl_dfu_cmd(int usbctrl, char *dfu_alt_info, char *interface, char *devstr);
635 int spl_mmc_load_image(struct spl_image_info *spl_image,
636 struct spl_boot_device *bootdev);
639 * spl_mmc_load() - Load an image file from MMC/SD media
641 * @param spl_image Image data filled in by loading process
642 * @param bootdev Describes which device to load from
643 * @param filename Name of file to load (in FS mode)
644 * @param raw_part Partition to load from (in RAW mode)
645 * @param raw_sect Sector to load from (in RAW mode)
647 * @return 0 on success, otherwise error code
649 int spl_mmc_load(struct spl_image_info *spl_image,
650 struct spl_boot_device *bootdev,
651 const char *filename,
653 unsigned long raw_sect);
656 * spl_usb_load() - Load an image file from USB mass storage
658 * @param spl_image Image data filled in by loading process
659 * @param bootdev Describes which device to load from
660 * @param raw_part Fat partition to load from
661 * @param filename Name of file to load
663 * @return 0 on success, otherwise error code
665 int spl_usb_load(struct spl_image_info *spl_image,
666 struct spl_boot_device *bootdev,
667 int partition, const char *filename);
669 int spl_ymodem_load_image(struct spl_image_info *spl_image,
670 struct spl_boot_device *bootdev);
673 * spl_invoke_atf - boot using an ARM trusted firmware image
675 void spl_invoke_atf(struct spl_image_info *spl_image);
678 * bl2_plat_get_bl31_params() - return params for bl31.
679 * @bl32_entry: address of BL32 executable (secure)
680 * @bl33_entry: address of BL33 executable (non secure)
681 * @fdt_addr: address of Flat Device Tree
683 * This is a weak function which might be overridden by the board code. By
684 * default it will just call bl2_plat_get_bl31_params_default().
686 * If you just want to manipulate or add some parameters, you can override
687 * this function, call bl2_plat_get_bl31_params_default and operate on the
688 * returned bl31 params.
690 * Return: bl31 params structure pointer
692 struct bl31_params *bl2_plat_get_bl31_params(uintptr_t bl32_entry,
693 uintptr_t bl33_entry,
697 * bl2_plat_get_bl31_params_default() - prepare params for bl31.
698 * @bl32_entry: address of BL32 executable (secure)
699 * @bl33_entry: address of BL33 executable (non secure)
700 * @fdt_addr: address of Flat Device Tree
702 * This is the default implementation of bl2_plat_get_bl31_params(). It assigns
703 * a pointer to the memory that the platform has kept aside to pass platform
704 * specific and trusted firmware related information to BL31. This memory is
705 * allocated by allocating memory to bl2_to_bl31_params_mem structure which is
706 * a superset of all the structure whose information is passed to BL31
708 * NOTE: The memory is statically allocated, thus this function should be
709 * called only once. All subsequent calls will overwrite any changes.
711 * Return: bl31 params structure pointer
713 struct bl31_params *bl2_plat_get_bl31_params_default(uintptr_t bl32_entry,
714 uintptr_t bl33_entry,
718 * bl2_plat_get_bl31_params_v2() - return params for bl31
719 * @bl32_entry: address of BL32 executable (secure)
720 * @bl33_entry: address of BL33 executable (non secure)
721 * @fdt_addr: address of Flat Device Tree
723 * This function does the same as bl2_plat_get_bl31_params() except that is is
724 * used for the new LOAD_IMAGE_V2 option, which uses a slightly different
725 * method to pass the parameters.
727 * Return: bl31 params structure pointer
729 struct bl_params *bl2_plat_get_bl31_params_v2(uintptr_t bl32_entry,
730 uintptr_t bl33_entry,
734 * bl2_plat_get_bl31_params_v2_default() - prepare params for bl31.
735 * @bl32_entry: address of BL32 executable (secure)
736 * @bl33_entry: address of BL33 executable (non secure)
737 * @fdt_addr: address of Flat Device Tree
739 * This is the default implementation of bl2_plat_get_bl31_params_v2(). It
740 * prepares the linked list of the bl31 params, populates the image types and
741 * set the entry points for bl32 and bl33 (if available).
743 * NOTE: The memory is statically allocated, thus this function should be
744 * called only once. All subsequent calls will overwrite any changes.
746 * Return: bl31 params structure pointer
748 struct bl_params *bl2_plat_get_bl31_params_v2_default(uintptr_t bl32_entry,
749 uintptr_t bl33_entry,
752 * spl_optee_entry - entry function for optee
754 * args defind in op-tee project
755 * https://github.com/OP-TEE/optee_os/
756 * core/arch/arm/kernel/generic_entry_a32.S
758 * @arg1: (ARMv7 standard bootarg #1)
759 * @arg2: device tree address, (ARMv7 standard bootarg #2)
760 * @arg3: non-secure entry address (ARMv7 bootarg #0)
762 void spl_optee_entry(void *arg0, void *arg1, void *arg2, void *arg3);
765 * spl_invoke_opensbi - boot using a RISC-V OpenSBI image
767 void spl_invoke_opensbi(struct spl_image_info *spl_image);
770 * board_return_to_bootrom - allow for boards to continue with the boot ROM
772 * If a board (e.g. the Rockchip RK3368 boards) provide some
773 * supporting functionality for SPL in their boot ROM and the SPL
774 * stage wants to return to the ROM code to continue booting, boards
775 * can implement 'board_return_to_bootrom'.
777 int board_return_to_bootrom(struct spl_image_info *spl_image,
778 struct spl_boot_device *bootdev);
781 * board_spl_fit_post_load - allow process images after loading finished
782 * @fit: Pointer to a valid Flattened Image Tree blob
784 void board_spl_fit_post_load(const void *fit);
787 * board_spl_fit_size_align - specific size align before processing payload
790 ulong board_spl_fit_size_align(ulong size);
793 * spl_perform_fixups() - arch/board-specific callback before processing
796 void spl_perform_fixups(struct spl_image_info *spl_image);
799 * spl_get_load_buffer() - get buffer for loading partial image data
801 * Returns memory area which can be populated by partial image data,
802 * ie. uImage or fitImage header.
804 struct image_header *spl_get_load_buffer(ssize_t offset, size_t size);
806 void spl_save_restore_data(void);