1 /* SPDX-License-Identifier: GPL-2.0+ */
2 /*
3 * (C) Copyright 2012
4 * Texas Instruments, <www.ti.com>
5 */
6 #ifndef _SPL_H_
7 #define _SPL_H_
8
9 #include <binman_sym.h>
10 #include <linker_lists.h>
11
12 /* Platform-specific defines */
13 #include <linux/compiler.h>
14 #include <asm/global_data.h>
15 #include <asm/spl.h>
16 #include <handoff.h>
17
18 struct blk_desc;
19 struct image_header;
20
21 /* Value in r0 indicates we booted from U-Boot */
22 #define UBOOT_NOT_LOADED_FROM_SPL 0x13578642
23
24 /* Boot type */
25 #define MMCSD_MODE_UNDEFINED 0
26 #define MMCSD_MODE_RAW 1
27 #define MMCSD_MODE_FS 2
28 #define MMCSD_MODE_EMMCBOOT 3
29
30 struct blk_desc;
31 struct image_header;
32
33 /*
34 * u_boot_first_phase() - check if this is the first U-Boot phase
35 *
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.
41 *
42 * @returns true if this is the first phase of U-Boot
43 *
44 */
u_boot_first_phase(void)45 static inline bool u_boot_first_phase(void)
46 {
47 if (IS_ENABLED(CONFIG_TPL)) {
48 if (IS_ENABLED(CONFIG_TPL_BUILD))
49 return true;
50 } else if (IS_ENABLED(CONFIG_SPL)) {
51 if (IS_ENABLED(CONFIG_SPL_BUILD))
52 return true;
53 } else {
54 return true;
55 }
56
57 return false;
58 }
59
60 enum u_boot_phase {
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 */
66 };
67
68 /**
69 * spl_phase() - Find out the phase of U-Boot
70 *
71 * This can be used to avoid #ifdef logic and use if() instead.
72 *
73 * For example, to include code only in TPL, you might do:
74 *
75 * #ifdef CONFIG_TPL_BUILD
76 * ...
77 * #endif
78 *
79 * but with this you can use:
80 *
81 * if (spl_phase() == PHASE_TPL) {
82 * ...
83 * }
84 *
85 * To include code only in SPL, you might do:
86 *
87 * #if defined(CONFIG_SPL_BUILD) && !defined(CONFIG_TPL_BUILD)
88 * ...
89 * #endif
90 *
91 * but with this you can use:
92 *
93 * if (spl_phase() == PHASE_SPL) {
94 * ...
95 * }
96 *
97 * To include code only in U-Boot proper, you might do:
98 *
99 * #ifndef CONFIG_SPL_BUILD
100 * ...
101 * #endif
102 *
103 * but with this you can use:
104 *
105 * if (spl_phase() == PHASE_BOARD_F) {
106 * ...
107 * }
108 *
109 * @return U-Boot phase
110 */
spl_phase(void)111 static inline enum u_boot_phase spl_phase(void)
112 {
113 #ifdef CONFIG_TPL_BUILD
114 return PHASE_TPL;
115 #elif CONFIG_SPL_BUILD
116 return PHASE_SPL;
117 #else
118 DECLARE_GLOBAL_DATA_PTR;
119
120 if (!(gd->flags & GD_FLG_RELOC))
121 return PHASE_BOARD_F;
122 else
123 return PHASE_BOARD_R;
124 #endif
125 }
126
127 /**
128 * spl_prev_phase() - Figure out the previous U-Boot phase
129 *
130 * @return the previous phase from this one, e.g. if called in SPL this returns
131 * PHASE_TPL, if TPL is enabled
132 */
spl_prev_phase(void)133 static inline enum u_boot_phase spl_prev_phase(void)
134 {
135 #ifdef CONFIG_TPL_BUILD
136 return PHASE_NONE;
137 #elif defined(CONFIG_SPL_BUILD)
138 return IS_ENABLED(CONFIG_TPL) ? PHASE_TPL : PHASE_NONE;
139 #else
140 return IS_ENABLED(CONFIG_SPL) ? PHASE_SPL : PHASE_NONE;
141 #endif
142 }
143
144 /**
145 * spl_next_phase() - Figure out the next U-Boot phase
146 *
147 * @return the next phase from this one, e.g. if called in TPL this returns
148 * PHASE_SPL
149 */
spl_next_phase(void)150 static inline enum u_boot_phase spl_next_phase(void)
151 {
152 #ifdef CONFIG_TPL_BUILD
153 return PHASE_SPL;
154 #else
155 return PHASE_BOARD_F;
156 #endif
157 }
158
159 /**
160 * spl_phase_name() - Get the name of the current phase
161 *
162 * @return phase name
163 */
spl_phase_name(enum u_boot_phase phase)164 static inline const char *spl_phase_name(enum u_boot_phase phase)
165 {
166 switch (phase) {
167 case PHASE_TPL:
168 return "TPL";
169 case PHASE_SPL:
170 return "SPL";
171 case PHASE_BOARD_F:
172 case PHASE_BOARD_R:
173 return "U-Boot";
174 default:
175 return "phase?";
176 }
177 }
178
179 /* A string name for SPL or TPL */
180 #ifdef CONFIG_SPL_BUILD
181 # ifdef CONFIG_TPL_BUILD
182 # define SPL_TPL_NAME "TPL"
183 # else
184 # define SPL_TPL_NAME "SPL"
185 # endif
186 # define SPL_TPL_PROMPT SPL_TPL_NAME ": "
187 #else
188 # define SPL_TPL_NAME ""
189 # define SPL_TPL_PROMPT ""
190 #endif
191
192 struct spl_image_info {
193 const char *name;
194 u8 os;
195 uintptr_t load_addr;
196 uintptr_t entry_point;
197 #if CONFIG_IS_ENABLED(LOAD_FIT) || CONFIG_IS_ENABLED(LOAD_FIT_FULL)
198 void *fdt_addr;
199 #endif
200 u32 boot_device;
201 u32 size;
202 u32 flags;
203 void *arg;
204 #ifdef CONFIG_SPL_LEGACY_IMAGE_CRC_CHECK
205 ulong dcrc_data;
206 ulong dcrc_length;
207 ulong dcrc;
208 #endif
209 };
210
211 /**
212 * Information required to load data from a device
213 *
214 * @dev: Pointer to the device, e.g. struct mmc *
215 * @priv: Private data for the device
216 * @bl_len: Block length for reading in bytes
217 * @filename: Name of the fit image file.
218 * @read: Function to call to read from the device
219 */
220 struct spl_load_info {
221 void *dev;
222 void *priv;
223 int bl_len;
224 const char *filename;
225 /**
226 * read() - Read from device
227 *
228 * @load: Information about the load state
229 * @sector: Sector number to read from (each @load->bl_len bytes)
230 * @count: Number of sectors to read
231 * @buf: Buffer to read into
232 * @return number of sectors read, 0 on error
233 */
234 ulong (*read)(struct spl_load_info *load, ulong sector, ulong count,
235 void *buf);
236 };
237
238 /*
239 * We need to know the position of U-Boot in memory so we can jump to it. We
240 * allow any U-Boot binary to be used (u-boot.bin, u-boot-nodtb.bin,
241 * u-boot.img), hence the '_any'. These is no checking here that the correct
242 * image is found. For example if u-boot.img is used we don't check that
243 * spl_parse_image_header() can parse a valid header.
244 *
245 * Similarly for SPL, so that TPL can jump to SPL.
246 */
247 binman_sym_extern(ulong, u_boot_any, image_pos);
248 binman_sym_extern(ulong, u_boot_any, size);
249 binman_sym_extern(ulong, spl, image_pos);
250 binman_sym_extern(ulong, spl, size);
251
252 /**
253 * spl_get_image_pos() - get the image position of the next phase
254 *
255 * This returns the image position to use to load the next phase of U-Boot
256 */
257 ulong spl_get_image_pos(void);
258
259 /**
260 * spl_get_image_size() - get the size of the next phase
261 *
262 * This returns the size to use to load the next phase of U-Boot
263 */
264 ulong spl_get_image_size(void);
265
266 /**
267 * spl_get_image_text_base() - get the text base of the next phase
268 *
269 * This returns the address that the next stage is linked to run at, i.e.
270 * CONFIG_SPL_TEXT_BASE or CONFIG_SYS_TEXT_BASE
271 *
272 * @return text-base address
273 */
274 ulong spl_get_image_text_base(void);
275
276 /**
277 * spl_load_simple_fit_skip_processing() - Hook to allow skipping the FIT
278 * image processing during spl_load_simple_fit().
279 *
280 * Return true to skip FIT processing, false to preserve the full code flow
281 * of spl_load_simple_fit().
282 */
283 bool spl_load_simple_fit_skip_processing(void);
284
285 /**
286 * spl_load_simple_fit() - Loads a fit image from a device.
287 * @spl_image: Image description to set up
288 * @info: Structure containing the information required to load data.
289 * @sector: Sector number where FIT image is located in the device
290 * @fdt: Pointer to the copied FIT header.
291 *
292 * Reads the FIT image @sector in the device. Loads u-boot image to
293 * specified load address and copies the dtb to end of u-boot image.
294 * Returns 0 on success.
295 */
296 int spl_load_simple_fit(struct spl_image_info *spl_image,
297 struct spl_load_info *info, ulong sector, void *fdt);
298
299 #define SPL_COPY_PAYLOAD_ONLY 1
300 #define SPL_FIT_FOUND 2
301
302 /**
303 * spl_load_legacy_img() - Loads a legacy image from a device.
304 * @spl_image: Image description to set up
305 * @load: Structure containing the information required to load data.
306 * @header: Pointer to image header (including appended image)
307 *
308 * Reads an legacy image from the device. Loads u-boot image to
309 * specified load address.
310 * Returns 0 on success.
311 */
312 int spl_load_legacy_img(struct spl_image_info *spl_image,
313 struct spl_load_info *load, ulong header);
314
315 /**
316 * spl_load_imx_container() - Loads a imx container 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 container image is located in the device
320 *
321 * Reads the container image @sector in the device. Loads u-boot image to
322 * specified load address.
323 */
324 int spl_load_imx_container(struct spl_image_info *spl_image,
325 struct spl_load_info *info, ulong sector);
326
327 /* SPL common functions */
328 void preloader_console_init(void);
329 u32 spl_boot_device(void);
330
331 /**
332 * spl_mmc_boot_mode() - Lookup function for the mode of an MMC boot source.
333 * @boot_device: ID of the device which the MMC driver wants to read
334 * from. Common values are e.g. BOOT_DEVICE_MMC1,
335 * BOOT_DEVICE_MMC2, BOOT_DEVICE_MMC2_2.
336 *
337 * This function should return one of MMCSD_MODE_FS, MMCSD_MODE_EMMCBOOT, or
338 * MMCSD_MODE_RAW for each MMC boot source which is defined for the target. The
339 * boot_device parameter tells which device the MMC driver is interested in.
340 *
341 * If not overridden, it is weakly defined in common/spl/spl_mmc.c.
342 *
343 * Note: It is important to use the boot_device parameter instead of e.g.
344 * spl_boot_device() as U-Boot is not always loaded from the same device as SPL.
345 */
346 u32 spl_mmc_boot_mode(const u32 boot_device);
347
348 /**
349 * spl_mmc_boot_partition() - MMC partition to load U-Boot from.
350 * @boot_device: ID of the device which the MMC driver wants to load
351 * U-Boot from.
352 *
353 * This function should return the partition number which the SPL
354 * should load U-Boot from (on the given boot_device) when
355 * CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION is set.
356 *
357 * If not overridden, it is weakly defined in common/spl/spl_mmc.c.
358 */
359 int spl_mmc_boot_partition(const u32 boot_device);
360 void spl_set_bd(void);
361
362 /**
363 * spl_set_header_raw_uboot() - Set up a standard SPL image structure
364 *
365 * This sets up the given spl_image which the standard values obtained from
366 * config options: CONFIG_SYS_MONITOR_LEN, CONFIG_SYS_UBOOT_START,
367 * CONFIG_SYS_TEXT_BASE.
368 *
369 * @spl_image: Image description to set up
370 */
371 void spl_set_header_raw_uboot(struct spl_image_info *spl_image);
372
373 /**
374 * spl_parse_image_header() - parse the image header and set up info
375 *
376 * This parses the legacy image header information at @header and sets up
377 * @spl_image according to what is found. If no image header is found, then
378 * a raw image or bootz is assumed. If CONFIG_SPL_PANIC_ON_RAW_IMAGE is
379 * enabled, then this causes a panic. If CONFIG_SPL_RAW_IMAGE_SUPPORT is not
380 * enabled then U-Boot gives up. Otherwise U-Boot sets up the image using
381 * spl_set_header_raw_uboot(), or possibly the bootz header.
382 *
383 * @spl_image: Image description to set up
384 * @header image header to parse
385 * @return 0 if a header was correctly parsed, -ve on error
386 */
387 int spl_parse_image_header(struct spl_image_info *spl_image,
388 const struct image_header *header);
389
390 void spl_board_prepare_for_linux(void);
391 void spl_board_prepare_for_boot(void);
392 int spl_board_ubi_load_image(u32 boot_device);
393 int spl_board_boot_device(u32 boot_device);
394
395 /**
396 * jump_to_image_linux() - Jump to a Linux kernel from SPL
397 *
398 * This jumps into a Linux kernel using the information in @spl_image.
399 *
400 * @spl_image: Image description to set up
401 */
402 void __noreturn jump_to_image_linux(struct spl_image_info *spl_image);
403
404 /**
405 * spl_start_uboot() - Check if SPL should start the kernel or U-Boot
406 *
407 * This is called by the various SPL loaders to determine whether the board
408 * wants to load the kernel or U-Boot. This function should be provided by
409 * the board.
410 *
411 * @return 0 if SPL should start the kernel, 1 if U-Boot must be started
412 */
413 int spl_start_uboot(void);
414
415 /**
416 * spl_display_print() - Display a board-specific message in SPL
417 *
418 * If CONFIG_SPL_DISPLAY_PRINT is enabled, U-Boot will call this function
419 * immediately after displaying the SPL console banner ("U-Boot SPL ...").
420 * This function should be provided by the board.
421 */
422 void spl_display_print(void);
423
424 /**
425 * struct spl_boot_device - Describes a boot device used by SPL
426 *
427 * @boot_device: A number indicating the BOOT_DEVICE type. There are various
428 * BOOT_DEVICE... #defines and enums in U-Boot and they are not consistently
429 * numbered.
430 * @boot_device_name: Named boot device, or NULL if none.
431 *
432 * Note: Additional fields can be added here, bearing in mind that SPL is
433 * size-sensitive and common fields will be present on all boards. This
434 * struct can also be used to return additional information about the load
435 * process if that becomes useful.
436 */
437 struct spl_boot_device {
438 uint boot_device;
439 const char *boot_device_name;
440 };
441
442 /**
443 * Holds information about a way of loading an SPL image
444 *
445 * @name: User-friendly name for this method (e.g. "MMC")
446 * @boot_device: Boot device that this loader supports
447 * @load_image: Function to call to load image
448 */
449 struct spl_image_loader {
450 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
451 const char *name;
452 #endif
453 uint boot_device;
454 /**
455 * load_image() - Load an SPL image
456 *
457 * @spl_image: place to put image information
458 * @bootdev: describes the boot device to load from
459 */
460 int (*load_image)(struct spl_image_info *spl_image,
461 struct spl_boot_device *bootdev);
462 };
463
464 /* Declare an SPL image loader */
465 #define SPL_LOAD_IMAGE(__name) \
466 ll_entry_declare(struct spl_image_loader, __name, spl_image_loader)
467
468 /*
469 * _priority is the priority of this method, 0 meaning it will be the top
470 * choice for this device, 9 meaning it is the bottom choice.
471 * _boot_device is the BOOT_DEVICE_... value
472 * _method is the load_image function to call
473 */
474 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
475 #define SPL_LOAD_IMAGE_METHOD(_name, _priority, _boot_device, _method) \
476 SPL_LOAD_IMAGE(_boot_device ## _priority ## _method) = { \
477 .name = _name, \
478 .boot_device = _boot_device, \
479 .load_image = _method, \
480 }
481 #else
482 #define SPL_LOAD_IMAGE_METHOD(_name, _priority, _boot_device, _method) \
483 SPL_LOAD_IMAGE(_boot_device ## _priority ## _method) = { \
484 .boot_device = _boot_device, \
485 .load_image = _method, \
486 }
487 #endif
488
489 /* SPL FAT image functions */
490 int spl_load_image_fat(struct spl_image_info *spl_image,
491 struct blk_desc *block_dev, int partition,
492 const char *filename);
493 int spl_load_image_fat_os(struct spl_image_info *spl_image,
494 struct blk_desc *block_dev, int partition);
495
496 void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image);
497
498 /* SPL EXT image functions */
499 int spl_load_image_ext(struct spl_image_info *spl_image,
500 struct blk_desc *block_dev, int partition,
501 const char *filename);
502 int spl_load_image_ext_os(struct spl_image_info *spl_image,
503 struct blk_desc *block_dev, int partition);
504
505 /**
506 * spl_early_init() - Set up device tree and driver model in SPL if enabled
507 *
508 * Call this function in board_init_f() if you want to use device tree and
509 * driver model early, before board_init_r() is called.
510 *
511 * If this is not called, then driver model will be inactive in SPL's
512 * board_init_f(), and no device tree will be available.
513 */
514 int spl_early_init(void);
515
516 /**
517 * spl_init() - Set up device tree and driver model in SPL if enabled
518 *
519 * You can optionally call spl_early_init(), then optionally call spl_init().
520 * This function will be called from board_init_r() if not called earlier.
521 *
522 * Both spl_early_init() and spl_init() perform a similar function except that
523 * the latter will not set up the malloc() area if
524 * CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN is enabled, since it is assumed to
525 * already be done by a calll to spl_relocate_stack_gd() before board_init_r()
526 * is reached.
527 *
528 * This function will be called from board_init_r() if not called earlier.
529 *
530 * If this is not called, then driver model will be inactive in SPL's
531 * board_init_f(), and no device tree will be available.
532 */
533 int spl_init(void);
534
535 #ifdef CONFIG_SPL_BOARD_INIT
536 void spl_board_init(void);
537 #endif
538
539 /**
540 * spl_was_boot_source() - check if U-Boot booted from SPL
541 *
542 * This will normally be true, but if U-Boot jumps to second U-Boot, it will
543 * be false. This should be implemented by board-specific code.
544 *
545 * @return true if U-Boot booted from SPL, else false
546 */
547 bool spl_was_boot_source(void);
548
549 /**
550 * spl_dfu_cmd- run dfu command with chosen mmc device interface
551 * @param usb_index - usb controller number
552 * @param mmc_dev - mmc device nubmer
553 *
554 * @return 0 on success, otherwise error code
555 */
556 int spl_dfu_cmd(int usbctrl, char *dfu_alt_info, char *interface, char *devstr);
557
558 int spl_mmc_load_image(struct spl_image_info *spl_image,
559 struct spl_boot_device *bootdev);
560
561 /**
562 * spl_mmc_load() - Load an image file from MMC/SD media
563 *
564 * @param spl_image Image data filled in by loading process
565 * @param bootdev Describes which device to load from
566 * @param filename Name of file to load (in FS mode)
567 * @param raw_part Partition to load from (in RAW mode)
568 * @param raw_sect Sector to load from (in RAW mode)
569 *
570 * @return 0 on success, otherwise error code
571 */
572 int spl_mmc_load(struct spl_image_info *spl_image,
573 struct spl_boot_device *bootdev,
574 const char *filename,
575 int raw_part,
576 unsigned long raw_sect);
577
578 /**
579 * spl_usb_load() - Load an image file from USB mass storage
580 *
581 * @param spl_image Image data filled in by loading process
582 * @param bootdev Describes which device to load from
583 * @param raw_part Fat partition to load from
584 * @param filename Name of file to load
585 *
586 * @return 0 on success, otherwise error code
587 */
588 int spl_usb_load(struct spl_image_info *spl_image,
589 struct spl_boot_device *bootdev,
590 int partition, const char *filename);
591
592 int spl_ymodem_load_image(struct spl_image_info *spl_image,
593 struct spl_boot_device *bootdev);
594
595 /**
596 * spl_invoke_atf - boot using an ARM trusted firmware image
597 */
598 void spl_invoke_atf(struct spl_image_info *spl_image);
599
600 /**
601 * bl2_plat_get_bl31_params() - return params for bl31.
602 * @bl32_entry: address of BL32 executable (secure)
603 * @bl33_entry: address of BL33 executable (non secure)
604 * @fdt_addr: address of Flat Device Tree
605 *
606 * This is a weak function which might be overridden by the board code. By
607 * default it will just call bl2_plat_get_bl31_params_default().
608 *
609 * If you just want to manipulate or add some parameters, you can override
610 * this function, call bl2_plat_get_bl31_params_default and operate on the
611 * returned bl31 params.
612 *
613 * Return: bl31 params structure pointer
614 */
615 struct bl31_params *bl2_plat_get_bl31_params(uintptr_t bl32_entry,
616 uintptr_t bl33_entry,
617 uintptr_t fdt_addr);
618
619 /**
620 * bl2_plat_get_bl31_params_default() - prepare params for bl31.
621 * @bl32_entry: address of BL32 executable (secure)
622 * @bl33_entry: address of BL33 executable (non secure)
623 * @fdt_addr: address of Flat Device Tree
624 *
625 * This is the default implementation of bl2_plat_get_bl31_params(). It assigns
626 * a pointer to the memory that the platform has kept aside to pass platform
627 * specific and trusted firmware related information to BL31. This memory is
628 * allocated by allocating memory to bl2_to_bl31_params_mem structure which is
629 * a superset of all the structure whose information is passed to BL31
630 *
631 * NOTE: The memory is statically allocated, thus this function should be
632 * called only once. All subsequent calls will overwrite any changes.
633 *
634 * Return: bl31 params structure pointer
635 */
636 struct bl31_params *bl2_plat_get_bl31_params_default(uintptr_t bl32_entry,
637 uintptr_t bl33_entry,
638 uintptr_t fdt_addr);
639
640 /**
641 * bl2_plat_get_bl31_params_v2() - return params for bl31
642 * @bl32_entry: address of BL32 executable (secure)
643 * @bl33_entry: address of BL33 executable (non secure)
644 * @fdt_addr: address of Flat Device Tree
645 *
646 * This function does the same as bl2_plat_get_bl31_params() except that is is
647 * used for the new LOAD_IMAGE_V2 option, which uses a slightly different
648 * method to pass the parameters.
649 *
650 * Return: bl31 params structure pointer
651 */
652 struct bl_params *bl2_plat_get_bl31_params_v2(uintptr_t bl32_entry,
653 uintptr_t bl33_entry,
654 uintptr_t fdt_addr);
655
656 /**
657 * bl2_plat_get_bl31_params_v2_default() - prepare params for bl31.
658 * @bl32_entry: address of BL32 executable (secure)
659 * @bl33_entry: address of BL33 executable (non secure)
660 * @fdt_addr: address of Flat Device Tree
661 *
662 * This is the default implementation of bl2_plat_get_bl31_params_v2(). It
663 * prepares the linked list of the bl31 params, populates the image types and
664 * set the entry points for bl32 and bl33 (if available).
665 *
666 * NOTE: The memory is statically allocated, thus this function should be
667 * called only once. All subsequent calls will overwrite any changes.
668 *
669 * Return: bl31 params structure pointer
670 */
671 struct bl_params *bl2_plat_get_bl31_params_v2_default(uintptr_t bl32_entry,
672 uintptr_t bl33_entry,
673 uintptr_t fdt_addr);
674 /**
675 * spl_optee_entry - entry function for optee
676 *
677 * args defind in op-tee project
678 * https://github.com/OP-TEE/optee_os/
679 * core/arch/arm/kernel/generic_entry_a32.S
680 * @arg0: pagestore
681 * @arg1: (ARMv7 standard bootarg #1)
682 * @arg2: device tree address, (ARMv7 standard bootarg #2)
683 * @arg3: non-secure entry address (ARMv7 bootarg #0)
684 */
685 void spl_optee_entry(void *arg0, void *arg1, void *arg2, void *arg3);
686
687 /**
688 * spl_invoke_opensbi - boot using a RISC-V OpenSBI image
689 */
690 void spl_invoke_opensbi(struct spl_image_info *spl_image);
691
692 /**
693 * board_return_to_bootrom - allow for boards to continue with the boot ROM
694 *
695 * If a board (e.g. the Rockchip RK3368 boards) provide some
696 * supporting functionality for SPL in their boot ROM and the SPL
697 * stage wants to return to the ROM code to continue booting, boards
698 * can implement 'board_return_to_bootrom'.
699 */
700 int board_return_to_bootrom(struct spl_image_info *spl_image,
701 struct spl_boot_device *bootdev);
702
703 /**
704 * board_spl_fit_post_load - allow process images after loading finished
705 * @fit: Pointer to a valid Flattened Image Tree blob
706 */
707 void board_spl_fit_post_load(const void *fit);
708
709 /**
710 * board_spl_fit_size_align - specific size align before processing payload
711 *
712 */
713 ulong board_spl_fit_size_align(ulong size);
714
715 /**
716 * spl_perform_fixups() - arch/board-specific callback before processing
717 * the boot-payload
718 */
719 void spl_perform_fixups(struct spl_image_info *spl_image);
720
721 /*
722 * spl_get_load_buffer() - get buffer for loading partial image data
723 *
724 * Returns memory area which can be populated by partial image data,
725 * ie. uImage or fitImage header.
726 */
727 struct image_header *spl_get_load_buffer(ssize_t offset, size_t size);
728
729 void spl_save_restore_data(void);
730 #endif
731