1 /* SPDX-License-Identifier: GPL-2.0+ */
4 * Texas Instruments, <www.ti.com>
9 #include <binman_sym.h>
11 /* Platform-specific defines */
12 #include <linux/compiler.h>
13 #include <asm/global_data.h>
20 /* Value in r0 indicates we booted from U-Boot */
21 #define UBOOT_NOT_LOADED_FROM_SPL 0x13578642
24 #define MMCSD_MODE_UNDEFINED 0
25 #define MMCSD_MODE_RAW 1
26 #define MMCSD_MODE_FS 2
27 #define MMCSD_MODE_EMMCBOOT 3
32 * u_boot_first_phase() - check if this is the first U-Boot phase
34 * U-Boot has up to three phases: TPL, SPL and U-Boot proper. Depending on the
35 * build flags we can determine whether the current build is for the first
36 * phase of U-Boot or not. If there is no SPL, then this is U-Boot proper. If
37 * there is SPL but no TPL, the the first phase is SPL. If there is TPL, then
38 * it is the first phase.
40 * @returns true if this is the first phase of U-Boot
43 static inline bool u_boot_first_phase(void)
45 if (IS_ENABLED(CONFIG_TPL)) {
46 if (IS_ENABLED(CONFIG_TPL_BUILD))
48 } else if (IS_ENABLED(CONFIG_SPL)) {
49 if (IS_ENABLED(CONFIG_SPL_BUILD))
59 PHASE_TPL, /* Running in TPL */
60 PHASE_SPL, /* Running in SPL */
61 PHASE_BOARD_F, /* Running in U-Boot before relocation */
62 PHASE_BOARD_R, /* Running in U-Boot after relocation */
66 * spl_phase() - Find out the phase of U-Boot
68 * This can be used to avoid #ifdef logic and use if() instead.
70 * For example, to include code only in TPL, you might do:
72 * #ifdef CONFIG_TPL_BUILD
76 * but with this you can use:
78 * if (spl_phase() == PHASE_TPL) {
82 * To include code only in SPL, you might do:
84 * #if defined(CONFIG_SPL_BUILD) && !defined(CONFIG_TPL_BUILD)
88 * but with this you can use:
90 * if (spl_phase() == PHASE_SPL) {
94 * To include code only in U-Boot proper, you might do:
96 * #ifndef CONFIG_SPL_BUILD
100 * but with this you can use:
102 * if (spl_phase() == PHASE_BOARD_F) {
106 * @return U-Boot phase
108 static inline enum u_boot_phase spl_phase(void)
110 #ifdef CONFIG_TPL_BUILD
112 #elif CONFIG_SPL_BUILD
115 DECLARE_GLOBAL_DATA_PTR;
117 if (!(gd->flags & GD_FLG_RELOC))
118 return PHASE_BOARD_F;
120 return PHASE_BOARD_R;
124 /* A string name for SPL or TPL */
125 #ifdef CONFIG_SPL_BUILD
126 # ifdef CONFIG_TPL_BUILD
127 # define SPL_TPL_NAME "TPL"
129 # define SPL_TPL_NAME "SPL"
131 # define SPL_TPL_PROMPT SPL_TPL_NAME ": "
133 # define SPL_TPL_NAME ""
134 # define SPL_TPL_PROMPT ""
137 struct spl_image_info {
141 uintptr_t entry_point;
142 #if CONFIG_IS_ENABLED(LOAD_FIT) || CONFIG_IS_ENABLED(LOAD_FIT_FULL)
149 #ifdef CONFIG_SPL_LEGACY_IMAGE_CRC_CHECK
157 * Information required to load data from a device
159 * @dev: Pointer to the device, e.g. struct mmc *
160 * @priv: Private data for the device
161 * @bl_len: Block length for reading in bytes
162 * @filename: Name of the fit image file.
163 * @read: Function to call to read from the device
165 struct spl_load_info {
169 const char *filename;
170 ulong (*read)(struct spl_load_info *load, ulong sector, ulong count,
175 * We need to know the position of U-Boot in memory so we can jump to it. We
176 * allow any U-Boot binary to be used (u-boot.bin, u-boot-nodtb.bin,
177 * u-boot.img), hence the '_any'. These is no checking here that the correct
178 * image is found. For example if u-boot.img is used we don't check that
179 * spl_parse_image_header() can parse a valid header.
181 * Similarly for SPL, so that TPL can jump to SPL.
183 binman_sym_extern(ulong, u_boot_any, image_pos);
184 binman_sym_extern(ulong, u_boot_any, size);
185 binman_sym_extern(ulong, spl, image_pos);
186 binman_sym_extern(ulong, spl, size);
189 * spl_get_image_pos() - get the image position of the next phase
191 * This returns the image position to use to load the next phase of U-Boot
193 ulong spl_get_image_pos(void);
196 * spl_get_image_size() - get the size of the next phase
198 * This returns the size to use to load the next phase of U-Boot
200 ulong spl_get_image_size(void);
203 * spl_load_simple_fit_skip_processing() - Hook to allow skipping the FIT
204 * image processing during spl_load_simple_fit().
206 * Return true to skip FIT processing, false to preserve the full code flow
207 * of spl_load_simple_fit().
209 bool spl_load_simple_fit_skip_processing(void);
212 * spl_load_simple_fit() - Loads a fit image from a device.
213 * @spl_image: Image description to set up
214 * @info: Structure containing the information required to load data.
215 * @sector: Sector number where FIT image is located in the device
216 * @fdt: Pointer to the copied FIT header.
218 * Reads the FIT image @sector in the device. Loads u-boot image to
219 * specified load address and copies the dtb to end of u-boot image.
220 * Returns 0 on success.
222 int spl_load_simple_fit(struct spl_image_info *spl_image,
223 struct spl_load_info *info, ulong sector, void *fdt);
225 #define SPL_COPY_PAYLOAD_ONLY 1
226 #define SPL_FIT_FOUND 2
229 * spl_load_legacy_img() - Loads a legacy image from a device.
230 * @spl_image: Image description to set up
231 * @load: Structure containing the information required to load data.
232 * @header: Pointer to image header (including appended image)
234 * Reads an legacy image from the device. Loads u-boot image to
235 * specified load address.
236 * Returns 0 on success.
238 int spl_load_legacy_img(struct spl_image_info *spl_image,
239 struct spl_load_info *load, ulong header);
242 * spl_load_imx_container() - Loads a imx container image from a device.
243 * @spl_image: Image description to set up
244 * @info: Structure containing the information required to load data.
245 * @sector: Sector number where container image is located in the device
247 * Reads the container image @sector in the device. Loads u-boot image to
248 * specified load address.
250 int spl_load_imx_container(struct spl_image_info *spl_image,
251 struct spl_load_info *info, ulong sector);
253 /* SPL common functions */
254 void preloader_console_init(void);
255 u32 spl_boot_device(void);
258 * spl_mmc_boot_mode() - Lookup function for the mode of an MMC boot source.
259 * @boot_device: ID of the device which the MMC driver wants to read
260 * from. Common values are e.g. BOOT_DEVICE_MMC1,
261 * BOOT_DEVICE_MMC2, BOOT_DEVICE_MMC2_2.
263 * This function should return one of MMCSD_MODE_FS, MMCSD_MODE_EMMCBOOT, or
264 * MMCSD_MODE_RAW for each MMC boot source which is defined for the target. The
265 * boot_device parameter tells which device the MMC driver is interested in.
267 * If not overridden, it is weakly defined in common/spl/spl_mmc.c.
269 * Note: It is important to use the boot_device parameter instead of e.g.
270 * spl_boot_device() as U-Boot is not always loaded from the same device as SPL.
272 u32 spl_mmc_boot_mode(const u32 boot_device);
275 * spl_mmc_boot_partition() - MMC partition to load U-Boot from.
276 * @boot_device: ID of the device which the MMC driver wants to load
279 * This function should return the partition number which the SPL
280 * should load U-Boot from (on the given boot_device) when
281 * CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION is set.
283 * If not overridden, it is weakly defined in common/spl/spl_mmc.c.
285 int spl_mmc_boot_partition(const u32 boot_device);
286 void spl_set_bd(void);
289 * spl_set_header_raw_uboot() - Set up a standard SPL image structure
291 * This sets up the given spl_image which the standard values obtained from
292 * config options: CONFIG_SYS_MONITOR_LEN, CONFIG_SYS_UBOOT_START,
293 * CONFIG_SYS_TEXT_BASE.
295 * @spl_image: Image description to set up
297 void spl_set_header_raw_uboot(struct spl_image_info *spl_image);
300 * spl_parse_image_header() - parse the image header and set up info
302 * This parses the legacy image header information at @header and sets up
303 * @spl_image according to what is found. If no image header is found, then
304 * a raw image or bootz is assumed. If CONFIG_SPL_PANIC_ON_RAW_IMAGE is
305 * enabled, then this causes a panic. If CONFIG_SPL_RAW_IMAGE_SUPPORT is not
306 * enabled then U-Boot gives up. Otherwise U-Boot sets up the image using
307 * spl_set_header_raw_uboot(), or possibly the bootz header.
309 * @spl_image: Image description to set up
310 * @header image header to parse
311 * @return 0 if a header was correctly parsed, -ve on error
313 int spl_parse_image_header(struct spl_image_info *spl_image,
314 const struct image_header *header);
316 void spl_board_prepare_for_linux(void);
317 void spl_board_prepare_for_boot(void);
318 int spl_board_ubi_load_image(u32 boot_device);
319 int spl_board_boot_device(u32 boot_device);
322 * jump_to_image_linux() - Jump to a Linux kernel from SPL
324 * This jumps into a Linux kernel using the information in @spl_image.
326 * @spl_image: Image description to set up
328 void __noreturn jump_to_image_linux(struct spl_image_info *spl_image);
331 * spl_start_uboot() - Check if SPL should start the kernel or U-Boot
333 * This is called by the various SPL loaders to determine whether the board
334 * wants to load the kernel or U-Boot. This function should be provided by
337 * @return 0 if SPL should start the kernel, 1 if U-Boot must be started
339 int spl_start_uboot(void);
342 * spl_display_print() - Display a board-specific message in SPL
344 * If CONFIG_SPL_DISPLAY_PRINT is enabled, U-Boot will call this function
345 * immediately after displaying the SPL console banner ("U-Boot SPL ...").
346 * This function should be provided by the board.
348 void spl_display_print(void);
351 * struct spl_boot_device - Describes a boot device used by SPL
353 * @boot_device: A number indicating the BOOT_DEVICE type. There are various
354 * BOOT_DEVICE... #defines and enums in U-Boot and they are not consistently
356 * @boot_device_name: Named boot device, or NULL if none.
358 * Note: Additional fields can be added here, bearing in mind that SPL is
359 * size-sensitive and common fields will be present on all boards. This
360 * struct can also be used to return additional information about the load
361 * process if that becomes useful.
363 struct spl_boot_device {
365 const char *boot_device_name;
369 * Holds information about a way of loading an SPL image
371 * @name: User-friendly name for this method (e.g. "MMC")
372 * @boot_device: Boot device that this loader supports
373 * @load_image: Function to call to load image
375 struct spl_image_loader {
376 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
381 * load_image() - Load an SPL image
383 * @spl_image: place to put image information
384 * @bootdev: describes the boot device to load from
386 int (*load_image)(struct spl_image_info *spl_image,
387 struct spl_boot_device *bootdev);
390 /* Declare an SPL image loader */
391 #define SPL_LOAD_IMAGE(__name) \
392 ll_entry_declare(struct spl_image_loader, __name, spl_image_loader)
395 * _priority is the priority of this method, 0 meaning it will be the top
396 * choice for this device, 9 meaning it is the bottom choice.
397 * _boot_device is the BOOT_DEVICE_... value
398 * _method is the load_image function to call
400 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
401 #define SPL_LOAD_IMAGE_METHOD(_name, _priority, _boot_device, _method) \
402 SPL_LOAD_IMAGE(_boot_device ## _priority ## _method) = { \
404 .boot_device = _boot_device, \
405 .load_image = _method, \
408 #define SPL_LOAD_IMAGE_METHOD(_name, _priority, _boot_device, _method) \
409 SPL_LOAD_IMAGE(_boot_device ## _priority ## _method) = { \
410 .boot_device = _boot_device, \
411 .load_image = _method, \
415 /* SPL FAT image functions */
416 int spl_load_image_fat(struct spl_image_info *spl_image,
417 struct blk_desc *block_dev, int partition,
418 const char *filename);
419 int spl_load_image_fat_os(struct spl_image_info *spl_image,
420 struct blk_desc *block_dev, int partition);
422 void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image);
424 /* SPL EXT image functions */
425 int spl_load_image_ext(struct spl_image_info *spl_image,
426 struct blk_desc *block_dev, int partition,
427 const char *filename);
428 int spl_load_image_ext_os(struct spl_image_info *spl_image,
429 struct blk_desc *block_dev, int partition);
432 * spl_early_init() - Set up device tree and driver model in SPL if enabled
434 * Call this function in board_init_f() if you want to use device tree and
435 * driver model early, before board_init_r() is called.
437 * If this is not called, then driver model will be inactive in SPL's
438 * board_init_f(), and no device tree will be available.
440 int spl_early_init(void);
443 * spl_init() - Set up device tree and driver model in SPL if enabled
445 * You can optionally call spl_early_init(), then optionally call spl_init().
446 * This function will be called from board_init_r() if not called earlier.
448 * Both spl_early_init() and spl_init() perform a similar function except that
449 * the latter will not set up the malloc() area if
450 * CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN is enabled, since it is assumed to
451 * already be done by a calll to spl_relocate_stack_gd() before board_init_r()
454 * This function will be called from board_init_r() if not called earlier.
456 * If this is not called, then driver model will be inactive in SPL's
457 * board_init_f(), and no device tree will be available.
461 #ifdef CONFIG_SPL_BOARD_INIT
462 void spl_board_init(void);
466 * spl_was_boot_source() - check if U-Boot booted from SPL
468 * This will normally be true, but if U-Boot jumps to second U-Boot, it will
469 * be false. This should be implemented by board-specific code.
471 * @return true if U-Boot booted from SPL, else false
473 bool spl_was_boot_source(void);
476 * spl_dfu_cmd- run dfu command with chosen mmc device interface
477 * @param usb_index - usb controller number
478 * @param mmc_dev - mmc device nubmer
480 * @return 0 on success, otherwise error code
482 int spl_dfu_cmd(int usbctrl, char *dfu_alt_info, char *interface, char *devstr);
484 int spl_mmc_load_image(struct spl_image_info *spl_image,
485 struct spl_boot_device *bootdev);
488 * spl_mmc_load() - Load an image file from MMC/SD media
490 * @param spl_image Image data filled in by loading process
491 * @param bootdev Describes which device to load from
492 * @param filename Name of file to load (in FS mode)
493 * @param raw_part Partition to load from (in RAW mode)
494 * @param raw_sect Sector to load from (in RAW mode)
496 * @return 0 on success, otherwise error code
498 int spl_mmc_load(struct spl_image_info *spl_image,
499 struct spl_boot_device *bootdev,
500 const char *filename,
502 unsigned long raw_sect);
504 int spl_ymodem_load_image(struct spl_image_info *spl_image,
505 struct spl_boot_device *bootdev);
508 * spl_invoke_atf - boot using an ARM trusted firmware image
510 void spl_invoke_atf(struct spl_image_info *spl_image);
513 * bl2_plat_get_bl31_params() - prepare params for bl31.
514 * @bl32_entry address of BL32 executable (secure)
515 * @bl33_entry address of BL33 executable (non secure)
516 * @fdt_addr address of Flat Device Tree
518 * This function assigns a pointer to the memory that the platform has kept
519 * aside to pass platform specific and trusted firmware related information
520 * to BL31. This memory is allocated by allocating memory to
521 * bl2_to_bl31_params_mem structure which is a superset of all the
522 * structure whose information is passed to BL31
523 * NOTE: This function should be called only once and should be done
524 * before generating params to BL31
526 * @return bl31 params structure pointer
528 struct bl31_params *bl2_plat_get_bl31_params(uintptr_t bl32_entry,
529 uintptr_t bl33_entry,
533 * spl_optee_entry - entry function for optee
535 * args defind in op-tee project
536 * https://github.com/OP-TEE/optee_os/
537 * core/arch/arm/kernel/generic_entry_a32.S
539 * @arg1: (ARMv7 standard bootarg #1)
540 * @arg2: device tree address, (ARMv7 standard bootarg #2)
541 * @arg3: non-secure entry address (ARMv7 bootarg #0)
543 void spl_optee_entry(void *arg0, void *arg1, void *arg2, void *arg3);
546 * spl_invoke_opensbi - boot using a RISC-V OpenSBI image
548 void spl_invoke_opensbi(struct spl_image_info *spl_image);
551 * board_return_to_bootrom - allow for boards to continue with the boot ROM
553 * If a board (e.g. the Rockchip RK3368 boards) provide some
554 * supporting functionality for SPL in their boot ROM and the SPL
555 * stage wants to return to the ROM code to continue booting, boards
556 * can implement 'board_return_to_bootrom'.
558 int board_return_to_bootrom(struct spl_image_info *spl_image,
559 struct spl_boot_device *bootdev);
562 * board_spl_fit_post_load - allow process images after loading finished
565 void board_spl_fit_post_load(ulong load_addr, size_t length);
568 * board_spl_fit_size_align - specific size align before processing payload
571 ulong board_spl_fit_size_align(ulong size);
574 * spl_perform_fixups() - arch/board-specific callback before processing
577 void spl_perform_fixups(struct spl_image_info *spl_image);
580 * spl_get_load_buffer() - get buffer for loading partial image data
582 * Returns memory area which can be populated by partial image data,
583 * ie. uImage or fitImage header.
585 struct image_header *spl_get_load_buffer(ssize_t offset, size_t size);
587 void spl_save_restore_data(void);