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_TPL, /* Running in TPL */
62 PHASE_SPL, /* Running in SPL */
63 PHASE_BOARD_F, /* Running in U-Boot before relocation */
64 PHASE_BOARD_R, /* Running in U-Boot after relocation */
68 * spl_phase() - Find out the phase of U-Boot
70 * This can be used to avoid #ifdef logic and use if() instead.
72 * For example, to include code only in TPL, you might do:
74 * #ifdef CONFIG_TPL_BUILD
78 * but with this you can use:
80 * if (spl_phase() == PHASE_TPL) {
84 * To include code only in SPL, you might do:
86 * #if defined(CONFIG_SPL_BUILD) && !defined(CONFIG_TPL_BUILD)
90 * but with this you can use:
92 * if (spl_phase() == PHASE_SPL) {
96 * To include code only in U-Boot proper, you might do:
98 * #ifndef CONFIG_SPL_BUILD
102 * but with this you can use:
104 * if (spl_phase() == PHASE_BOARD_F) {
108 * @return U-Boot phase
110 static inline enum u_boot_phase spl_phase(void)
112 #ifdef CONFIG_TPL_BUILD
114 #elif CONFIG_SPL_BUILD
117 DECLARE_GLOBAL_DATA_PTR;
119 if (!(gd->flags & GD_FLG_RELOC))
120 return PHASE_BOARD_F;
122 return PHASE_BOARD_R;
126 /* A string name for SPL or TPL */
127 #ifdef CONFIG_SPL_BUILD
128 # ifdef CONFIG_TPL_BUILD
129 # define SPL_TPL_NAME "TPL"
131 # define SPL_TPL_NAME "SPL"
133 # define SPL_TPL_PROMPT SPL_TPL_NAME ": "
135 # define SPL_TPL_NAME ""
136 # define SPL_TPL_PROMPT ""
139 struct spl_image_info {
143 uintptr_t entry_point;
144 #if CONFIG_IS_ENABLED(LOAD_FIT) || CONFIG_IS_ENABLED(LOAD_FIT_FULL)
151 #ifdef CONFIG_SPL_LEGACY_IMAGE_CRC_CHECK
159 * Information required to load data from a device
161 * @dev: Pointer to the device, e.g. struct mmc *
162 * @priv: Private data for the device
163 * @bl_len: Block length for reading in bytes
164 * @filename: Name of the fit image file.
165 * @read: Function to call to read from the device
167 struct spl_load_info {
171 const char *filename;
172 ulong (*read)(struct spl_load_info *load, ulong sector, ulong count,
177 * We need to know the position of U-Boot in memory so we can jump to it. We
178 * allow any U-Boot binary to be used (u-boot.bin, u-boot-nodtb.bin,
179 * u-boot.img), hence the '_any'. These is no checking here that the correct
180 * image is found. For example if u-boot.img is used we don't check that
181 * spl_parse_image_header() can parse a valid header.
183 * Similarly for SPL, so that TPL can jump to SPL.
185 binman_sym_extern(ulong, u_boot_any, image_pos);
186 binman_sym_extern(ulong, u_boot_any, size);
187 binman_sym_extern(ulong, spl, image_pos);
188 binman_sym_extern(ulong, spl, size);
191 * spl_get_image_pos() - get the image position of the next phase
193 * This returns the image position to use to load the next phase of U-Boot
195 ulong spl_get_image_pos(void);
198 * spl_get_image_size() - get the size of the next phase
200 * This returns the size to use to load the next phase of U-Boot
202 ulong spl_get_image_size(void);
205 * spl_load_simple_fit_skip_processing() - Hook to allow skipping the FIT
206 * image processing during spl_load_simple_fit().
208 * Return true to skip FIT processing, false to preserve the full code flow
209 * of spl_load_simple_fit().
211 bool spl_load_simple_fit_skip_processing(void);
214 * spl_load_simple_fit() - Loads a fit image from a device.
215 * @spl_image: Image description to set up
216 * @info: Structure containing the information required to load data.
217 * @sector: Sector number where FIT image is located in the device
218 * @fdt: Pointer to the copied FIT header.
220 * Reads the FIT image @sector in the device. Loads u-boot image to
221 * specified load address and copies the dtb to end of u-boot image.
222 * Returns 0 on success.
224 int spl_load_simple_fit(struct spl_image_info *spl_image,
225 struct spl_load_info *info, ulong sector, void *fdt);
227 #define SPL_COPY_PAYLOAD_ONLY 1
228 #define SPL_FIT_FOUND 2
231 * spl_load_legacy_img() - Loads a legacy image from a device.
232 * @spl_image: Image description to set up
233 * @load: Structure containing the information required to load data.
234 * @header: Pointer to image header (including appended image)
236 * Reads an legacy image from the device. Loads u-boot image to
237 * specified load address.
238 * Returns 0 on success.
240 int spl_load_legacy_img(struct spl_image_info *spl_image,
241 struct spl_load_info *load, ulong header);
244 * spl_load_imx_container() - Loads a imx container image from a device.
245 * @spl_image: Image description to set up
246 * @info: Structure containing the information required to load data.
247 * @sector: Sector number where container image is located in the device
249 * Reads the container image @sector in the device. Loads u-boot image to
250 * specified load address.
252 int spl_load_imx_container(struct spl_image_info *spl_image,
253 struct spl_load_info *info, ulong sector);
255 /* SPL common functions */
256 void preloader_console_init(void);
257 u32 spl_boot_device(void);
260 * spl_mmc_boot_mode() - Lookup function for the mode of an MMC boot source.
261 * @boot_device: ID of the device which the MMC driver wants to read
262 * from. Common values are e.g. BOOT_DEVICE_MMC1,
263 * BOOT_DEVICE_MMC2, BOOT_DEVICE_MMC2_2.
265 * This function should return one of MMCSD_MODE_FS, MMCSD_MODE_EMMCBOOT, or
266 * MMCSD_MODE_RAW for each MMC boot source which is defined for the target. The
267 * boot_device parameter tells which device the MMC driver is interested in.
269 * If not overridden, it is weakly defined in common/spl/spl_mmc.c.
271 * Note: It is important to use the boot_device parameter instead of e.g.
272 * spl_boot_device() as U-Boot is not always loaded from the same device as SPL.
274 u32 spl_mmc_boot_mode(const u32 boot_device);
277 * spl_mmc_boot_partition() - MMC partition to load U-Boot from.
278 * @boot_device: ID of the device which the MMC driver wants to load
281 * This function should return the partition number which the SPL
282 * should load U-Boot from (on the given boot_device) when
283 * CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION is set.
285 * If not overridden, it is weakly defined in common/spl/spl_mmc.c.
287 int spl_mmc_boot_partition(const u32 boot_device);
288 void spl_set_bd(void);
291 * spl_set_header_raw_uboot() - Set up a standard SPL image structure
293 * This sets up the given spl_image which the standard values obtained from
294 * config options: CONFIG_SYS_MONITOR_LEN, CONFIG_SYS_UBOOT_START,
295 * CONFIG_SYS_TEXT_BASE.
297 * @spl_image: Image description to set up
299 void spl_set_header_raw_uboot(struct spl_image_info *spl_image);
302 * spl_parse_image_header() - parse the image header and set up info
304 * This parses the legacy image header information at @header and sets up
305 * @spl_image according to what is found. If no image header is found, then
306 * a raw image or bootz is assumed. If CONFIG_SPL_PANIC_ON_RAW_IMAGE is
307 * enabled, then this causes a panic. If CONFIG_SPL_RAW_IMAGE_SUPPORT is not
308 * enabled then U-Boot gives up. Otherwise U-Boot sets up the image using
309 * spl_set_header_raw_uboot(), or possibly the bootz header.
311 * @spl_image: Image description to set up
312 * @header image header to parse
313 * @return 0 if a header was correctly parsed, -ve on error
315 int spl_parse_image_header(struct spl_image_info *spl_image,
316 const struct image_header *header);
318 void spl_board_prepare_for_linux(void);
319 void spl_board_prepare_for_boot(void);
320 int spl_board_ubi_load_image(u32 boot_device);
321 int spl_board_boot_device(u32 boot_device);
324 * jump_to_image_linux() - Jump to a Linux kernel from SPL
326 * This jumps into a Linux kernel using the information in @spl_image.
328 * @spl_image: Image description to set up
330 void __noreturn jump_to_image_linux(struct spl_image_info *spl_image);
333 * spl_start_uboot() - Check if SPL should start the kernel or U-Boot
335 * This is called by the various SPL loaders to determine whether the board
336 * wants to load the kernel or U-Boot. This function should be provided by
339 * @return 0 if SPL should start the kernel, 1 if U-Boot must be started
341 int spl_start_uboot(void);
344 * spl_display_print() - Display a board-specific message in SPL
346 * If CONFIG_SPL_DISPLAY_PRINT is enabled, U-Boot will call this function
347 * immediately after displaying the SPL console banner ("U-Boot SPL ...").
348 * This function should be provided by the board.
350 void spl_display_print(void);
353 * struct spl_boot_device - Describes a boot device used by SPL
355 * @boot_device: A number indicating the BOOT_DEVICE type. There are various
356 * BOOT_DEVICE... #defines and enums in U-Boot and they are not consistently
358 * @boot_device_name: Named boot device, or NULL if none.
360 * Note: Additional fields can be added here, bearing in mind that SPL is
361 * size-sensitive and common fields will be present on all boards. This
362 * struct can also be used to return additional information about the load
363 * process if that becomes useful.
365 struct spl_boot_device {
367 const char *boot_device_name;
371 * Holds information about a way of loading an SPL image
373 * @name: User-friendly name for this method (e.g. "MMC")
374 * @boot_device: Boot device that this loader supports
375 * @load_image: Function to call to load image
377 struct spl_image_loader {
378 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
383 * load_image() - Load an SPL image
385 * @spl_image: place to put image information
386 * @bootdev: describes the boot device to load from
388 int (*load_image)(struct spl_image_info *spl_image,
389 struct spl_boot_device *bootdev);
392 /* Declare an SPL image loader */
393 #define SPL_LOAD_IMAGE(__name) \
394 ll_entry_declare(struct spl_image_loader, __name, spl_image_loader)
397 * _priority is the priority of this method, 0 meaning it will be the top
398 * choice for this device, 9 meaning it is the bottom choice.
399 * _boot_device is the BOOT_DEVICE_... value
400 * _method is the load_image function to call
402 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
403 #define SPL_LOAD_IMAGE_METHOD(_name, _priority, _boot_device, _method) \
404 SPL_LOAD_IMAGE(_boot_device ## _priority ## _method) = { \
406 .boot_device = _boot_device, \
407 .load_image = _method, \
410 #define SPL_LOAD_IMAGE_METHOD(_name, _priority, _boot_device, _method) \
411 SPL_LOAD_IMAGE(_boot_device ## _priority ## _method) = { \
412 .boot_device = _boot_device, \
413 .load_image = _method, \
417 /* SPL FAT image functions */
418 int spl_load_image_fat(struct spl_image_info *spl_image,
419 struct blk_desc *block_dev, int partition,
420 const char *filename);
421 int spl_load_image_fat_os(struct spl_image_info *spl_image,
422 struct blk_desc *block_dev, int partition);
424 void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image);
426 /* SPL EXT image functions */
427 int spl_load_image_ext(struct spl_image_info *spl_image,
428 struct blk_desc *block_dev, int partition,
429 const char *filename);
430 int spl_load_image_ext_os(struct spl_image_info *spl_image,
431 struct blk_desc *block_dev, int partition);
434 * spl_early_init() - Set up device tree and driver model in SPL if enabled
436 * Call this function in board_init_f() if you want to use device tree and
437 * driver model early, before board_init_r() is called.
439 * If this is not called, then driver model will be inactive in SPL's
440 * board_init_f(), and no device tree will be available.
442 int spl_early_init(void);
445 * spl_init() - Set up device tree and driver model in SPL if enabled
447 * You can optionally call spl_early_init(), then optionally call spl_init().
448 * This function will be called from board_init_r() if not called earlier.
450 * Both spl_early_init() and spl_init() perform a similar function except that
451 * the latter will not set up the malloc() area if
452 * CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN is enabled, since it is assumed to
453 * already be done by a calll to spl_relocate_stack_gd() before board_init_r()
456 * This function will be called from board_init_r() if not called earlier.
458 * If this is not called, then driver model will be inactive in SPL's
459 * board_init_f(), and no device tree will be available.
463 #ifdef CONFIG_SPL_BOARD_INIT
464 void spl_board_init(void);
468 * spl_was_boot_source() - check if U-Boot booted from SPL
470 * This will normally be true, but if U-Boot jumps to second U-Boot, it will
471 * be false. This should be implemented by board-specific code.
473 * @return true if U-Boot booted from SPL, else false
475 bool spl_was_boot_source(void);
478 * spl_dfu_cmd- run dfu command with chosen mmc device interface
479 * @param usb_index - usb controller number
480 * @param mmc_dev - mmc device nubmer
482 * @return 0 on success, otherwise error code
484 int spl_dfu_cmd(int usbctrl, char *dfu_alt_info, char *interface, char *devstr);
486 int spl_mmc_load_image(struct spl_image_info *spl_image,
487 struct spl_boot_device *bootdev);
490 * spl_mmc_load() - Load an image file from MMC/SD media
492 * @param spl_image Image data filled in by loading process
493 * @param bootdev Describes which device to load from
494 * @param filename Name of file to load (in FS mode)
495 * @param raw_part Partition to load from (in RAW mode)
496 * @param raw_sect Sector to load from (in RAW mode)
498 * @return 0 on success, otherwise error code
500 int spl_mmc_load(struct spl_image_info *spl_image,
501 struct spl_boot_device *bootdev,
502 const char *filename,
504 unsigned long raw_sect);
506 int spl_ymodem_load_image(struct spl_image_info *spl_image,
507 struct spl_boot_device *bootdev);
510 * spl_invoke_atf - boot using an ARM trusted firmware image
512 void spl_invoke_atf(struct spl_image_info *spl_image);
515 * bl2_plat_get_bl31_params() - prepare params for bl31.
516 * @bl32_entry address of BL32 executable (secure)
517 * @bl33_entry address of BL33 executable (non secure)
518 * @fdt_addr address of Flat Device Tree
520 * This function assigns a pointer to the memory that the platform has kept
521 * aside to pass platform specific and trusted firmware related information
522 * to BL31. This memory is allocated by allocating memory to
523 * bl2_to_bl31_params_mem structure which is a superset of all the
524 * structure whose information is passed to BL31
525 * NOTE: This function should be called only once and should be done
526 * before generating params to BL31
528 * @return bl31 params structure pointer
530 struct bl31_params *bl2_plat_get_bl31_params(uintptr_t bl32_entry,
531 uintptr_t bl33_entry,
535 * spl_optee_entry - entry function for optee
537 * args defind in op-tee project
538 * https://github.com/OP-TEE/optee_os/
539 * core/arch/arm/kernel/generic_entry_a32.S
541 * @arg1: (ARMv7 standard bootarg #1)
542 * @arg2: device tree address, (ARMv7 standard bootarg #2)
543 * @arg3: non-secure entry address (ARMv7 bootarg #0)
545 void spl_optee_entry(void *arg0, void *arg1, void *arg2, void *arg3);
548 * spl_invoke_opensbi - boot using a RISC-V OpenSBI image
550 void spl_invoke_opensbi(struct spl_image_info *spl_image);
553 * board_return_to_bootrom - allow for boards to continue with the boot ROM
555 * If a board (e.g. the Rockchip RK3368 boards) provide some
556 * supporting functionality for SPL in their boot ROM and the SPL
557 * stage wants to return to the ROM code to continue booting, boards
558 * can implement 'board_return_to_bootrom'.
560 int board_return_to_bootrom(struct spl_image_info *spl_image,
561 struct spl_boot_device *bootdev);
564 * board_spl_fit_post_load - allow process images after loading finished
567 void board_spl_fit_post_load(ulong load_addr, size_t length);
570 * board_spl_fit_size_align - specific size align before processing payload
573 ulong board_spl_fit_size_align(ulong size);
576 * spl_perform_fixups() - arch/board-specific callback before processing
579 void spl_perform_fixups(struct spl_image_info *spl_image);
582 * spl_get_load_buffer() - get buffer for loading partial image data
584 * Returns memory area which can be populated by partial image data,
585 * ie. uImage or fitImage header.
587 struct image_header *spl_get_load_buffer(ssize_t offset, size_t size);
589 void spl_save_restore_data(void);