10 config SPL_DFU_NO_RESET
15 depends on SUPPORT_SPL
17 If you want to build SPL as well as the normal image, say Y.
19 menu "SPL configuration options"
23 bool "Support SPL based upon the common SPL framework"
26 Enable the SPL framework under common/spl/. This framework
27 supports MMC, NAND and YMODEM and other methods loading of U-Boot
28 and the Linux Kernel. If unsure, say Y.
30 config SPL_FRAMEWORK_BOARD_INIT_F
31 bool "Define a generic function board_init_f"
32 depends on SPL_FRAMEWORK
34 Define a generic function board_init_f that:
35 - initialize the spl (spl_early_init)
36 - initialize the serial (preloader_console_init)
37 Unless you want to provide your own board_init_f, you should say Y.
40 hex "Maximum size of SPL image"
41 default 0x11000 if ARCH_MX6 && !MX6_OCRAM_256KB
42 default 0x31000 if ARCH_MX6 && MX6_OCRAM_256KB
43 default 0x30000 if ARCH_MVEBU && ARMADA_32BIT
46 Specifies the maximum length of the U-Boot SPL image.
47 If this value is zero, it is ignored.
49 config SPL_SIZE_LIMIT_SUBTRACT_GD
50 bool "SPL image size check: provide space for global data"
51 depends on SPL_SIZE_LIMIT > 0
53 If enabled, aligned size of global data is reserved in
54 SPL_SIZE_LIMIT check to ensure such an image does not overflow SRAM
55 if SPL_SIZE_LIMIT describes the size of SRAM available for SPL when
56 pre-reloc global data is put into this SRAM, too.
58 config SPL_SIZE_LIMIT_SUBTRACT_MALLOC
59 bool "SPL image size check: provide space for malloc() pool before relocation"
60 depends on SPL_SIZE_LIMIT > 0
62 If enabled, SPL_SYS_MALLOC_F_LEN is reserved in SPL_SIZE_LIMIT check
63 to ensure such an image does not overflow SRAM if SPL_SIZE_LIMIT
64 describes the size of SRAM available for SPL when pre-reloc malloc
65 pool is put into this SRAM, too.
67 config SPL_SIZE_LIMIT_PROVIDE_STACK
68 hex "SPL image size check: provide stack space before relocation"
69 depends on SPL_SIZE_LIMIT > 0
72 If set, this size is reserved in SPL_SIZE_LIMIT check to ensure such
73 an image does not overflow SRAM if SPL_SIZE_LIMIT describes the size
74 of SRAM available for SPL when the stack required before reolcation
78 hex "Maximum size of the SPL image, excluding BSS"
79 default 0x30000 if ARCH_MX6 && MX6_OCRAM_256KB
80 default 0x1b000 if AM33XX && !TI_SECURE_DEVICE
81 default 0xec00 if OMAP34XX
82 default 0x10000 if ARCH_MX6 && !MX6_OCRAM_256KB
83 default 0x7fa0 if SUNXI_SRAM_ADDRESS = 0x10000
84 default 0x7fa0 if SUNXI_SRAM_ADDRESS = 0x20000 && !MACH_SUN50I_H616
85 default 0xbfa0 if MACH_SUN50I_H616
86 default 0x7000 if RCAR_GEN3
87 default 0x5fa0 if SUNXI_SRAM_ADDRESS = 0x0
88 default 0x10000 if ASPEED_AST2600
89 default 0x27000 if IMX8MM && SPL_TEXT_BASE = 0x7E1000
90 default 0x30000 if ARCH_SC5XX && (SC59X_64 || SC59X)
91 default 0x20000 if ARCH_SC5XX && (SC58X || SC57X)
94 Maximum size of the SPL image (text, data, rodata, and linker lists
95 sections), BSS excluded. When defined, the linker checks that the
96 actual size does not exceed it.
99 hex "Offset to which the SPL should be padded before appending the SPL payload"
100 default 0x31000 if ARCH_MX6 && MX6_OCRAM_256KB
101 default 0x11000 if ARCH_MX7 || (ARCH_MX6 && !MX6_OCRAM_256KB)
102 default 0x10000 if ARCH_KEYSTONE
103 default 0x0 if ARCH_MTMIPS || ARCH_SUNXI
104 default TPL_MAX_SIZE if TPL_MAX_SIZE > SPL_MAX_SIZE
107 Image offset to which the SPL should be padded before appending the
108 SPL payload. By default, this is defined as CONFIG_SPL_MAX_SIZE, or 0 if
109 CONFIG_SPL_MAX_SIZE is undefined. CONFIG_SPL_PAD_TO must be either
110 0, meaning to append the SPL payload without any padding, or >=
113 config SPL_HAS_BSS_LINKER_SECTION
114 depends on SPL_FRAMEWORK
115 bool "Use a specific address for the BSS via the linker script"
116 default y if ARCH_SUNXI || ARCH_MX6 || ARCH_OMAP2PLUS || MIPS || RISCV || ARCH_ZYNQMP || ARCH_SC5XX
118 config SPL_BSS_START_ADDR
119 hex "Link address for the BSS within the SPL binary"
120 depends on SPL_HAS_BSS_LINKER_SECTION
121 default 0x88200000 if (ARCH_MX6 && (MX6SX || MX6SL || MX6UL || MX6ULL)) || ARCH_MX7
122 default 0x18200000 if ARCH_MX6 && !(MX6SX || MX6SL || MX6UL || MX6ULL)
123 default 0x80a00000 if ARCH_OMAP2PLUS
124 default 0x81f80000 if ARCH_SUNXI && MACH_SUNIV
125 default 0x4ff80000 if ARCH_SUNXI && !(MACH_SUN9I || MACH_SUNIV)
126 default 0x2ff80000 if ARCH_SUNXI && MACH_SUN9I
127 default 0x1000 if ARCH_ZYNQMP
128 default 0x200B0000 if ARCH_SC5XX && (SC59X_64 || SC59X)
129 default 0x20080000 if ARCH_SC5XX && SC58X
130 default 0x200A0000 if ARCH_SC5XX && SC57X
133 prompt "Enforce SPL BSS limit"
135 default SPL_BSS_LIMIT
137 In some platforms we only want to enforce a limit on the size of the
138 BSS in memory. On other platforms we need to enforce a limit on the
139 whole of the memory allocation as we're strictly limited to a small
140 typically non-DRAM location. Finally, other platforms do not enforce
141 a memory limit within SPL.
143 config SPL_NO_BSS_LIMIT
144 bool "Do not enforce a build time limit on the size of the BSS"
147 bool "Enforce a limit on the size of the BSS only"
149 config SPL_FOOTPRINT_LIMIT
150 bool "Enforce a limit on the whole of memory allocated to SPL, BSS included"
154 config SPL_BSS_MAX_SIZE
155 hex "Maximum size in memory allocated to the SPL BSS"
156 depends on SPL_BSS_LIMIT
157 default 0x100000 if ARCH_MX6 || RISCV
158 default 0x80000 if ARCH_OMAP2PLUS || ARCH_SUNXI
159 default 0x10000 if ARCH_SC5XX
161 When non-zero, the linker checks that the actual memory used by SPL
162 from __bss_start to __bss_end does not exceed it.
164 config SPL_MAX_FOOTPRINT
165 hex "Maximum size in memory allocated to the SPL, BSS included"
166 depends on SPL_FOOTPRINT_LIMIT
168 When non-zero, the linker checks that the actual memory used by SPL
169 from _start to __bss_end does not exceed it.
171 config SPL_SYS_STACK_F_CHECK_BYTE
175 Constant used to check the stack
177 config SPL_SYS_REPORT_STACK_F_USAGE
178 depends on SPL_SIZE_LIMIT_PROVIDE_STACK != 0
179 bool "Check and report stack usage in SPL before relocation"
181 If this option is enabled, the initial SPL stack is filled with 0xaa
182 very early, up to the size configured with
183 SPL_SIZE_LIMIT_PROVIDE_STACK.
184 Later when SPL is done using this initial stack and switches to a
185 stack in DRAM, the actually used size of this initial stack is
186 reported by examining the memory and searching for the lowest
187 occurrence of non 0xaa bytes.
188 This default implementation works for stacks growing down only.
190 config SPL_SHOW_ERRORS
191 bool "Show more information when something goes wrong"
192 depends on SPL_LIBCOMMON_SUPPORT
194 This enabled more verbose error messages and checking when something
195 goes wrong in SPL. For example, it shows the error code when U-Boot
196 cannot be located. This can help to diagnose the problem and figure
197 out a fix, particularly during development.
199 This adds a small amount to SPL code size, perhaps 100 bytes.
201 config SPL_BINMAN_SYMBOLS
202 bool "Declare binman symbols in SPL"
203 depends on SPL_FRAMEWORK && BINMAN
206 This enables use of symbols in SPL which refer to other entries in
207 the same binman image as the SPL. These can be declared with the
208 binman_sym_declare(type, entry, prop) macro and accessed by the
209 binman_sym(type, entry, prop) macro defined in binman_sym.h.
211 See tools/binman/binman.rst for a detailed explanation.
213 config SPL_BINMAN_UBOOT_SYMBOLS
214 bool "Declare binman symbols for U-Boot phases in SPL"
215 depends on SPL_BINMAN_SYMBOLS
216 default n if ARCH_IMX8M || ARCH_IMX8ULP || ARCH_IMX9
219 This enables use of symbols in SPL which refer to U-Boot phases,
220 enabling SPL to obtain the location and size of its next phase simply
221 by calling spl_get_image_pos() and spl_get_image_size().
223 For this to work, you must have all U-Boot phases in the same binman
224 image, so binman can update SPL with the locations of everything.
226 source "common/spl/Kconfig.nxp"
229 bool "Pass hand-off information from SPL to U-Boot proper"
232 It is useful to be able to pass information from SPL to U-Boot
233 proper to preserve state that is known in SPL and is needed in U-Boot.
234 Enable this to locate the handoff information in U-Boot proper, early
235 in boot. It is available in gd->handoff. The state state is set up
236 in SPL (or TPL if that is being used).
239 bool "Pass hand-off information from SPL to U-Boot proper"
240 depends on HANDOFF && SPL_BLOBLIST
243 This option enables SPL to write handoff information. This can be
244 used to pass information like the size of SDRAM from SPL to U-Boot
245 proper. Also SPL can receive information from TPL in the same place
249 string "Linker script for the SPL stage"
250 default "arch/arm/cpu/arm926ejs/sunxi/u-boot-spl.lds" if MACH_SUNIV
251 default "arch/arm/cpu/armv7/sunxi/u-boot-spl.lds" if ARCH_SUNXI && !MACH_SUNIV && !ARM64
252 default "arch/arm/cpu/arm926ejs/mxs/u-boot-spl.lds" if (ARCH_MX23 || ARCH_MX28) && !SPL_FRAMEWORK
253 default "arch/arm/cpu/arm1136/u-boot-spl.lds" if CPU_ARM1136
254 default "arch/arm/cpu/armv8/u-boot-spl.lds" if ARCH_LS1043A || ARCH_LS1046A || ARCH_LS2080A
255 default "arch/arm/cpu/armv8/u-boot-spl.lds" if ARM64
256 default "arch/arm/mach-at91/arm926ejs/u-boot-spl.lds" if ARCH_AT91 && CPU_ARM926EJS
257 default "arch/arm/mach-at91/armv7/u-boot-spl.lds" if ARCH_AT91 && CPU_V7A
258 default "arch/arm/mach-omap2/u-boot-spl.lds" if ARCH_MX6 || ARCH_OMAP2PLUS || (ARCH_K3 && !ARM64)
259 default "arch/arm/mach-zynq/u-boot-spl.lds" if ARCH_ZYNQ
260 default "board/samsung/common/exynos-uboot-spl.lds" if ARCH_EXYNOS5 || ARCH_EXYNOS4
261 default "board/davinci/da8xxevm/u-boot-spl-da850evm.lds" if ARCH_DAVINCI
262 default "arch/\$(ARCH)/cpu/u-boot-spl.lds"
264 The SPL stage will usually require a different linker-script
265 (as it runs from a different memory region) than the regular
266 U-Boot stage. Set this to the path of the linker-script to
271 default 0x40200000 if OMAP34XX
272 default 0x402F4000 if AM43XX
273 default 0x402F0400 if AM33XX
274 default 0x40301350 if OMAP54XX
275 default 0x10060 if MACH_SUN50I || MACH_SUN50I_H5 || MACH_SUN9I
276 default 0x20060 if SUN50I_GEN_H6 || SUNXI_GEN_NCAT2
277 default 0x00060 if ARCH_SUNXI
278 default 0xfffc0000 if ARCH_ZYNQMP
279 default 0x20080000 if ARCH_SC5XX
282 The address in memory that SPL will be running from.
285 bool "Call SoC-specific initialization in SPL"
287 If this option is enabled, U-Boot will call the function
288 spl_soc_init() from board_init_r(). This function should be
289 provided by the SoC vendor.
291 config SPL_BOARD_INIT
292 bool "Call board-specific initialization in SPL"
294 If this option is enabled, U-Boot will call the function
295 spl_board_init() from board_init_r(). This function should be
296 provided by the board.
298 config SPL_LOAD_BLOCK
301 Support loading images from block devices. This adds a bl_len member
302 to struct spl_load_info.
304 config SPL_BOOTROM_SUPPORT
305 bool "Support returning to the BOOTROM"
306 select SPL_LOAD_BLOCK if MACH_IMX
308 Some platforms (e.g. the Rockchip RK3368) provide support in their
309 ROM for loading the next boot-stage after performing basic setup
312 Enable this option, to return to the BOOTROM through the
313 BOOT_DEVICE_BOOTROM (or fall-through to the next boot device in the
314 boot device list, if not implemented for a given board)
316 config SPL_BOOTCOUNT_LIMIT
317 bool "Support bootcount in SPL"
318 depends on SPL_ENV_SUPPORT && !TPL_BOOTCOUNT_LIMIT
320 On some boards, which use 'falcon' mode, it is necessary to check
321 and increment the number of boot attempts. Such boards do not
322 use proper U-Boot for normal boot flow and hence needs those
323 adjustments to be done in the SPL.
325 config SPL_RAW_IMAGE_SUPPORT
326 bool "Support SPL loading and booting of RAW images"
327 default n if ARCH_MVEBU
328 default n if (ARCH_MX6 && (SPL_MMC || SPL_SATA))
330 depends on !TI_SECURE_DEVICE
332 SPL will support loading and booting a RAW image when this option
333 is y. If this is not set, SPL will move on to other available
334 boot media to find a suitable image.
336 config SPL_LEGACY_IMAGE_FORMAT
337 bool "Support SPL loading and booting of Legacy images"
338 default n if ARCH_MVEBU
339 default y if !SPL_LOAD_FIT
340 depends on !TI_SECURE_DEVICE
342 SPL will support loading and booting Legacy images when this option
343 is y. If this is not set, SPL will move on to other available
344 boot media to find a suitable image.
346 config SPL_LEGACY_IMAGE_CRC_CHECK
347 bool "Check CRC of Legacy images"
348 depends on SPL_LEGACY_IMAGE_FORMAT
351 Enable this to check the CRC of Legacy images. While this increases
352 reliability, it affects both code size and boot duration.
353 If disabled, Legacy images are booted if the image magic and size
354 are correct, without further integrity checks.
356 config SPL_LOAD_IMX_CONTAINER
357 bool "Enable SPL loading and booting of i.MX8 Containers"
360 Support booting U-Boot from an i.MX8 container image. If you are not
361 using i.MX8, say 'n'.
363 config IMX_CONTAINER_CFG
364 string "i.MX8 Container config file"
365 depends on SPL && SPL_LOAD_IMX_CONTAINER
367 Specify the cfg file for generating the container image which will be
370 config SPL_SYS_MALLOC_SIMPLE
371 bool "Only use malloc_simple functions in the SPL"
373 Say Y here to only use the *_simple malloc functions from
374 malloc_simple.c, rather then using the versions from dlmalloc.c;
375 this will make the SPL binary smaller at the cost of more heap
376 usage as the *_simple malloc functions do not re-use free-ed mem.
378 config SPL_SHARES_INIT_SP_ADDR
379 bool "SPL and U-Boot use the same initial stack pointer location"
380 depends on (ARM || ARCH_JZ47XX || MICROBLAZE || RISCV) && SPL_FRAMEWORK
381 default n if ARCH_SUNXI || ARCH_MX6 || ARCH_MX7 || ARCH_SC5XX
384 In many cases, we can use the same initial stack pointer address for
385 both SPL and U-Boot itself. If you need to specify a different address
386 however, say N here and then set a different value in CONFIG_SPL_STACK.
389 hex "Initial stack pointer location"
390 depends on (ARM || ARCH_JZ47XX || MICROBLAZE || RISCV) && \
391 SPL_FRAMEWORK || ROCKCHIP_RK3036
392 depends on !SPL_SHARES_INIT_SP_ADDR
393 default 0x946bb8 if ARCH_MX7
394 default 0x93ffb8 if ARCH_MX6 && MX6_OCRAM_256KB
395 default 0x91ffb8 if ARCH_MX6 && !MX6_OCRAM_256KB
396 default 0x118000 if MACH_SUN50I_H6
397 default 0x52a00 if MACH_SUN50I_H616
398 default 0x40000 if MACH_SUN8I_R528
399 default 0x54000 if MACH_SUN50I || MACH_SUN50I_H5
400 default 0x18000 if MACH_SUN9I
401 default 0x8000 if ARCH_SUNXI
402 default 0x200E4000 if ARCH_SC5XX && (SC59X_64 || SC59X)
403 default 0x200B0000 if ARCH_SC5XX && SC58X
404 default 0x200D0000 if ARCH_SC5XX && SC57X
406 Address of the start of the stack SPL will use before SDRAM is
410 bool "Enable SDRAM location for SPL stack"
412 SPL starts off execution in SRAM and thus typically has only a small
413 stack available. Since SPL sets up DRAM while in its board_init_f()
414 function, it is possible for the stack to move there before
415 board_init_r() is reached. This option enables a special SDRAM
416 location for the SPL stack. U-Boot SPL switches to this after
417 board_init_f() completes, and before board_init_r() starts.
419 config SPL_STACK_R_ADDR
420 depends on SPL_STACK_R
421 hex "SDRAM location for SPL stack"
422 default 0x82000000 if ARCH_OMAP2PLUS
424 Specify the address in SDRAM for the SPL stack. This will be set up
425 before board_init_r() is called.
427 config SPL_STACK_R_MALLOC_SIMPLE_LEN
428 depends on SPL_STACK_R && SPL_SYS_MALLOC_SIMPLE
429 hex "Size of malloc_simple heap after switching to DRAM SPL stack"
430 default 0x400000 if ARCH_K3 && ARM64
431 default 0x200000 if ARCH_K3 && CPU_V7R
434 Specify the amount of the stack to use as memory pool for
435 malloc_simple after switching the stack to DRAM. This may be set
436 to give board_init_r() a larger heap then the initial heap in
437 SRAM which is limited to SYS_MALLOC_F_LEN bytes.
439 config SPL_SEPARATE_BSS
440 bool "BSS section is in a different memory region from text"
442 Some platforms need a large BSS region in SPL and can provide this
443 because RAM is already set up. In this case BSS can be moved to RAM.
444 This option should then be enabled so that the correct device tree
445 location is used. Normally we put the device tree at the end of BSS
446 but with this option enabled, it goes at _image_binary_end.
448 config SPL_SYS_MALLOC
449 bool "Enable malloc pool in SPL"
450 depends on SPL_FRAMEWORK
452 config SPL_HAS_CUSTOM_MALLOC_START
453 bool "For the SPL malloc pool, define a custom starting address"
454 depends on SPL_SYS_MALLOC
456 config SPL_CUSTOM_SYS_MALLOC_ADDR
457 hex "SPL malloc addr"
458 depends on SPL_HAS_CUSTOM_MALLOC_START
460 config SPL_SYS_MALLOC_SIZE
461 hex "Size of the SPL malloc pool"
462 depends on SPL_SYS_MALLOC
467 depends on SPL_OF_PLATDATA
468 # Bind cannot be supported because the udevice structs are in read-only
469 # memory so we cannot update the linked lists.
470 select SPL_OF_PLATDATA_NO_BIND
471 select SPL_OF_PLATDATA_RT
473 Some platforms (e.g. x86 Apollo Lake) load SPL into a read-only
474 section of memory. This means that of-platdata must make a copy (in
475 writeable memory) of anything it wants to modify, such as
478 config SPL_BANNER_PRINT
479 bool "Enable output of the SPL banner 'U-Boot SPL ...'"
482 If this option is enabled, SPL will print the banner with version
483 info. Disabling this option could be useful to reduce SPL boot time
484 (e.g. approx. 6 ms faster, when output on i.MX6 with 115200 baud).
487 depends on ARM && !ARM64
488 bool "Allows initializing BSS early before entering board_init_f"
490 On some platform we have sufficient memory available early on to
491 allow setting up and using a basic BSS prior to entering
492 board_init_f. Activating this option will also de-activate the
493 clearing of BSS during the SPL relocation process, thus allowing
494 to carry state from board_init_f to board_init_r by way of BSS.
496 config SPL_DISPLAY_PRINT
497 bool "Display a board-specific message in SPL"
499 If this option is enabled, U-Boot will call the function
500 spl_display_print() immediately after displaying the SPL console
501 banner ("U-Boot SPL ..."). This function should be provided by
504 config SPL_SYS_MMCSD_RAW_MODE
505 bool "Use raw reads to locate the next boot phase"
506 depends on SPL_DM_MMC || SPL_MMC
507 default y if ARCH_SUNXI || ARCH_DAVINCI || ARCH_UNIPHIER || \
508 ARCH_MX6 || ARCH_MX7 || \
509 ARCH_ROCKCHIP || ARCH_MVEBU || ARCH_SOCFPGA || \
510 ARCH_AT91 || ARCH_ZYNQ || ARCH_KEYSTONE || OMAP34XX || \
511 OMAP54XX || AM33XX || AM43XX || \
512 TARGET_SIFIVE_UNLEASHED || TARGET_SIFIVE_UNMATCHED
514 Support booting from an MMC without a filesystem.
516 if SPL_SYS_MMCSD_RAW_MODE
519 prompt "Method for locating next phase of boot (e.g. U-Boot)"
521 config SYS_MMCSD_RAW_MODE_U_BOOT_USE_SECTOR
522 bool "MMC raw mode: by sector"
523 select SPL_LOAD_BLOCK
525 Use sector number for specifying U-Boot location on MMC/SD in
528 config SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION
529 bool "MMC raw mode: by partition"
530 select SPL_LOAD_BLOCK
532 Use a partition for loading U-Boot when using MMC/SD in raw mode.
534 config SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION_TYPE
535 bool "MMC raw mode: by partition type"
536 depends on DOS_PARTITION
538 Use partition type for specifying U-Boot partition on MMC/SD in
539 raw mode. U-Boot will be loaded from the first partition of this
544 config SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR
545 hex "Address on the MMC to load U-Boot from"
546 depends on SYS_MMCSD_RAW_MODE_U_BOOT_USE_SECTOR
547 default 0x40 if ARCH_SUNXI
548 default 0x75 if ARCH_DAVINCI
549 default 0x8a if ARCH_MX6 || ARCH_MX7
550 default 0x100 if ARCH_UNIPHIER
551 default 0x0 if ARCH_MVEBU
552 default 0x200 if ARCH_SOCFPGA || ARCH_AT91
553 default 0x300 if ARCH_ZYNQ || ARCH_KEYSTONE || OMAP34XX || \
554 OMAP54XX || AM33XX || AM43XX || ARCH_K3
555 default 0x4000 if ARCH_ROCKCHIP
556 default 0x822 if TARGET_SIFIVE_UNLEASHED || TARGET_SIFIVE_UNMATCHED
558 Address on the MMC to load U-Boot from, when the MMC is being used
559 in raw mode. Units: MMC sectors (1 sector = 512 bytes).
561 config SYS_MMCSD_RAW_MODE_U_BOOT_DATA_PART_OFFSET
562 hex "U-Boot main hardware partition image offset"
563 depends on SYS_MMCSD_RAW_MODE_U_BOOT_USE_SECTOR
564 default 0x10 if ARCH_SUNXI
567 On some platforms SPL location depends on hardware partition. The ROM
568 code skips the MBR sector when loading SPL from main hardware data
569 partition. This adds offset to the main U-Boot image. Set this symbol
570 to the number of skipped sectors.
572 If unsure, leave the default.
574 config SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION
575 hex "Partition to use to load U-Boot from"
576 depends on SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION
579 Partition on the MMC to load U-Boot from when the MMC is being
582 config SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION_TYPE
583 hex "Partition Type on the MMC to load U-Boot from"
584 depends on SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION_TYPE
586 Partition Type on the MMC to load U-Boot from, when the MMC is being
589 endif # SPL_SYS_MMCSD_RAW_MODE
591 config SUPPORT_EMMC_BOOT_OVERRIDE_PART_CONFIG
592 bool "Override eMMC EXT_CSC_PART_CONFIG by user defined partition"
593 depends on SUPPORT_EMMC_BOOT
595 eMMC boot partition is normally configured by the bits of the EXT_CSD
596 register (EXT_CSC_PART_CONFIG), BOOT_PARTITION_ENABLE field. In some
597 cases it might be required in SPL to load the image from different
598 partition than the partition selected by EXT_CSC_PART_CONFIG register.
599 Enable this option if you intend to use an eMMC boot partition other
600 then selected via EXT_CSC_PART_CONFIG register and specify the custom
601 partition number by the CONFIG_SYS_MMCSD_RAW_MODE_EMMC_BOOT_PARTITION
604 config SYS_MMCSD_RAW_MODE_EMMC_BOOT_PARTITION
605 int "Number of the eMMC boot partition to use"
606 depends on SUPPORT_EMMC_BOOT_OVERRIDE_PART_CONFIG
609 eMMC boot partition number to use when the eMMC in raw mode and
610 the eMMC EXT_CSC_PART_CONFIG selection should be overridden in SPL
611 by user defined partition number.
613 config SPL_FIT_IMAGE_TINY
614 bool "Remove functionality from SPL FIT loading to reduce size"
616 default y if ARCH_IMX8M || ARCH_IMX9 || ARCH_SUNXI
618 Enable this to reduce the size of the FIT image loading code
619 in SPL, if space for the SPL binary is very tight.
621 This skips the recording of each loaded payload
622 (i.e. loadable) into the FDT (modifying the loaded FDT to
623 ensure this information is available to the next image
627 bool "Support CACHE drivers"
629 Enable CACHE drivers in SPL. These drivers can keep data so that
630 future requests for that data can be served faster. Enable this option
631 to build the drivers in drivers/cache as part of an SPL build.
634 bool "Support CPU drivers"
636 Enable this to support CPU drivers in SPL. These drivers can set
637 up CPUs and provide information about them such as the model and
638 name. This can be useful in SPL since setting up the CPUs earlier
639 may improve boot performance. Enable this option to build the
640 drivers in drivers/cpu as part of an SPL build.
643 bool "Support crypto drivers"
645 Enable crypto drivers in SPL. These drivers can be used to
646 accelerate secure boot processing in secure applications. Enable
647 this option to build the drivers in drivers/crypto as part of an
651 bool "Support DMA drivers"
653 Enable DMA (direct-memory-access) drivers in SPL. These drivers
654 can be used to handle memory-to-peripheral data transfer without
655 the CPU moving the data. Enable this option to build the drivers
656 in drivers/dma as part of an SPL build.
658 config SPL_DRIVERS_MISC
659 bool "Support misc drivers"
661 Enable miscellaneous drivers in SPL. These drivers perform various
662 tasks that don't fall nicely into other categories, Enable this
663 option to build the drivers in drivers/misc as part of an SPL
664 build, for those that support building in SPL (not all drivers do).
666 config SPL_ENV_SUPPORT
667 bool "Support an environment"
669 Enable environment support in SPL. The U-Boot environment provides
670 a number of settings (essentially name/value pairs) which can
671 control many aspects of U-Boot's operation. Normally this is not
672 needed in SPL as it has a much simpler task with less
673 configuration. But some boards use this to support 'Falcon' boot
674 on EXT2 and FAT, where SPL boots directly into Linux without
675 starting U-Boot first. Enabling this option will make env_get()
676 and env_set() available in SPL.
679 bool "Support save environment"
680 depends on SPL_ENV_SUPPORT
681 select SPL_MMC_WRITE if ENV_IS_IN_MMC
683 Enable save environment support in SPL after setenv. By default
684 the saveenv option is not provided in SPL, but some boards need
685 this support in 'Falcon' boot, where SPL need to boot from
686 different images based on environment variable set by OS. For
687 example OS may set "reboot_image" environment variable to
688 "recovery" inorder to boot recovery image by SPL. The SPL read
689 "reboot_image" and act accordingly and change the reboot_image
690 to default mode using setenv and save the environment.
693 bool "Support Ethernet"
694 depends on SPL_ENV_SUPPORT
697 Enable access to the network subsystem and associated Ethernet
698 drivers in SPL. This permits SPL to load U-Boot over an Ethernet
699 link rather than from an on-board peripheral. Environment support
700 is required since the network stack uses a number of environment
701 variables. See also SPL_NET.
704 bool "Support EXT filesystems"
705 select SPL_CRC16 if EXT4_WRITE
707 Enable support for EXT2/3/4 filesystems with SPL. This permits
708 U-Boot (or Linux in Falcon mode) to be loaded from an EXT
709 filesystem from within SPL. Support for the underlying block
710 device (e.g. MMC or USB) must be enabled separately.
712 config SPL_FS_SQUASHFS
713 bool "Support SquashFS filesystems"
716 Enable support for SquashFS filesystems with SPL. This permits
717 U-Boot (or Linux in Falcon mode) to be loaded from a SquashFS
718 filesystem from within SPL. Support for the underlying block
719 device (e.g. MMC or USB) must be enabled separately.
722 bool "Support FAT filesystems"
725 Enable support for FAT and VFAT filesystems with SPL. This
726 permits U-Boot (or Linux in Falcon mode) to be loaded from a FAT
727 filesystem from within SPL. Support for the underlying block
728 device (e.g. MMC or USB) must be enabled separately.
730 config SPL_FS_FAT_DMA_ALIGN
731 bool "Use DMA-aligned buffers with FAT"
732 depends on SPL_FS_FAT
733 select SPL_LOAD_BLOCK
734 default y if SPL_LOAD_FIT
736 The FAT filesystem driver tries to ensure that the reads it issues to
737 the block subsystem use DMA-aligned buffers. If the supplied buffer is
738 not DMA-aligned, the FAT driver will use a bounce-buffer and read
739 block-by-block. This is separate from the bounce-buffer used by the
740 block subsystem (CONFIG_BOUNCE_BUFFER).
742 Enable this config to align buffers passed to the FAT filesystem
743 driver. This will speed up reads, but will increase the size of U-Boot
746 config SPL_FS_LOAD_PAYLOAD_NAME
747 string "File to load for U-Boot from the filesystem"
748 depends on SPL_FS_EXT4 || SPL_FS_FAT || SPL_FS_SQUASHFS || SPL_SEMIHOSTING
749 default "tispl.bin" if SYS_K3_SPL_ATF
750 default "u-boot.itb" if SPL_LOAD_FIT
753 Filename to read to load U-Boot when reading from filesystem.
755 config SPL_FS_LOAD_KERNEL_NAME
756 string "File to load for the OS kernel from the filesystem"
757 depends on (SPL_FS_EXT4 || SPL_FS_FAT || SPL_FS_SQUASHFS) && SPL_OS_BOOT
760 Filename to read to load for the OS kernel when reading from the
763 config SPL_FS_LOAD_ARGS_NAME
764 string "File to load for the OS kernel argument parameters from the filesystem"
765 depends on (SPL_FS_EXT4 || SPL_FS_FAT || SPL_FS_SQUASHFS) && SPL_OS_BOOT
768 Filename to read to load for the OS kernel argument parameters from
772 bool "Support write for FAT filesystems"
774 Enable write support for FAT and VFAT filesystems with SPL.
775 Support for the underlying block device (e.g. MMC or USB) must be
781 Enable support for FPGAs in SPL. Field-programmable Gate Arrays
782 provide software-configurable hardware which is typically used to
783 implement peripherals (such as UARTs, LCD displays, MMC) or
784 accelerate custom processing functions, such as image processing
785 or machine learning. Sometimes it is useful to program the FPGA
786 as early as possible during boot, and this option can enable that
790 bool "Support GPIO in SPL"
792 Enable support for GPIOs (General-purpose Input/Output) in SPL.
793 GPIOs allow U-Boot to read the state of an input line (high or
794 low) and set the state of an output line. This can be used to
795 drive LEDs, control power to various system parts and read user
796 input. GPIOs can be useful in SPL to enable a 'sign-of-life' LED,
797 for example. Enable this option to build the drivers in
798 drivers/gpio as part of an SPL build.
803 Enable support for the I2C (Inter-Integrated Circuit) bus in SPL.
804 I2C works with a clock and data line which can be driven by a
805 one or more masters or slaves. It is a fairly complex bus but is
806 widely used as it only needs two lines for communication. Speeds of
807 400kbps are typical but up to 3.4Mbps is supported by some
808 hardware. I2C can be useful in SPL to configure power management
809 ICs (PMICs) before raising the CPU clock speed, for example.
810 Enable this option to build the drivers in drivers/i2c as part of
813 config SPL_LIBCOMMON_SUPPORT
814 bool "Support common libraries"
816 Enable support for common U-Boot libraries within SPL. These
817 libraries include common code to deal with U-Boot images,
818 environment and USB, for example. This option is enabled on many
819 boards. Enable this option to build the code in common/ as part of
822 config SPL_LIBDISK_SUPPORT
823 bool "Support disk partitions"
826 Enable support for disk partitions within SPL. 'Disk' is something
827 of a misnomer as it includes non-spinning media such as flash (as
828 used in MMC and USB sticks). Partitions provide a way for a disk
829 to be split up into separate regions, with a partition table placed
830 at the start or end which describes the location and size of each
831 'partition'. These partitions are typically uses as individual block
832 devices, typically with an EXT2 or FAT filesystem in each. This
833 option enables whatever partition support has been enabled in
834 U-Boot to also be used in SPL. It brings in the code in disk/.
836 config SPL_LIBGENERIC_SUPPORT
837 bool "Support generic libraries"
839 Enable support for generic U-Boot libraries within SPL. These
840 libraries include generic code to deal with device tree, hashing,
841 printf(), compression and the like. This option is enabled on many
842 boards. Enable this option to build the code in lib/ as part of an
845 config SPL_DM_MAILBOX
846 bool "Support Mailbox"
849 Enable support for Mailbox within SPL. This enable the inter
850 processor communication protocols tobe used within SPL. Enable
851 this option to build the drivers in drivers/mailbox as part of
855 bool "Support Memory controller drivers"
857 Enable support for Memory Controller drivers within SPL.
858 These devices provide Memory bus interface to various devices like
859 SRAM, Ethernet adapters, FPGAs, etc.
865 Enable support for MMC (Multimedia Card) within SPL. This enables
866 the MMC protocol implementation and allows any enabled drivers to
867 be used within SPL. MMC can be used with or without disk partition
868 support depending on the application (SPL_LIBDISK_SUPPORT). Enable
869 this option to build the drivers in drivers/mmc as part of an SPL
872 config SYS_MMCSD_FS_BOOT
873 bool "MMC FS Boot mode"
875 default y if !ARCH_MVEBU
877 Enable MMC FS Boot mode. Partition is selected by option
878 SYS_MMCSD_FS_BOOT_PARTITION.
880 config SYS_MMCSD_FS_BOOT_PARTITION
881 int "MMC Boot Partition"
882 depends on SYS_MMCSD_FS_BOOT
885 Partition on the MMC to load U-Boot from when the MMC is being
887 Use -1 as a special value to use the first bootable partition.
890 bool "Tiny MMC framework in SPL"
893 Enable MMC framework tinification support. This option is useful if
894 if your SPL is extremely size constrained. Heed the warning, enable
895 this option if and only if you know exactly what you are doing, if
896 you are reading this help text, you most likely have no idea :-)
898 The MMC framework is reduced to bare minimum to be useful. No malloc
899 support is needed for the MMC framework operation with this option
900 enabled. The framework supports exactly one MMC device and exactly
901 one MMC driver. The MMC driver can be adjusted to avoid any malloc
902 operations too, which can remove the need for malloc support in SPL
903 and thus further reduce footprint.
906 bool "MMC/SD/SDIO card support for write operations in SPL"
909 Enable write access to MMC and SD Cards in SPL
912 config SPL_MPC8XXX_INIT_DDR
913 bool "Support MPC8XXX DDR init"
915 Enable support for DDR-SDRAM (double-data-rate synchronous dynamic
916 random-access memory) on the MPC8XXX family within SPL. This
917 allows DRAM to be set up before loading U-Boot into that DRAM,
921 bool "Support MTD drivers"
923 Enable support for MTD (Memory Technology Device) within SPL. MTD
924 provides a block interface over raw NAND and can also be used with
925 SPI flash. This allows SPL to load U-Boot from supported MTD
926 devices. See SPL_NAND_SUPPORT and SPL_ONENAND_SUPPORT for how
927 to enable specific MTD drivers.
930 bool "Support new Mentor Graphics USB"
932 Enable support for Mentor Graphics USB in SPL. This is a new
933 driver used by some boards. Enable this option to build
934 the drivers in drivers/usb/musb-new as part of an SPL build. The
935 old drivers are in drivers/usb/musb.
937 config SPL_NAND_SUPPORT
938 bool "Support NAND flash"
939 select SPL_LOAD_BLOCK
941 Enable support for NAND (Negative AND) flash in SPL. NAND flash
942 can be used to allow SPL to load U-Boot from supported devices.
943 This enables the drivers in drivers/mtd/nand/raw as part of an SPL
946 config SPL_NAND_RAW_ONLY
947 bool "Support to boot only raw u-boot.bin images"
948 depends on SPL_NAND_SUPPORT
950 Use this only if you need to save space.
952 config SPL_NAND_DRIVERS
953 bool "Use standard NAND driver"
955 SPL uses normal NAND drivers, not minimal drivers.
958 bool "Include standard ECC in SPL"
960 config SPL_NAND_SOFTECC
961 bool "Use software ECC in SPL"
962 depends on SPL_NAND_ECC
964 config SPL_NAND_SIMPLE
965 bool "Support simple NAND drivers in SPL"
967 Support for NAND boot using simple NAND drivers that
968 expose the cmd_ctrl() interface.
971 depends on SPL_NAND_SUPPORT
972 bool "Use Base NAND Driver"
974 Include nand_base.c in the SPL.
976 config SPL_NAND_IDENT
977 depends on SPL_NAND_BASE
978 bool "Use chip ID to identify NAND flash"
980 SPL uses the chip ID list to identify the NAND flash.
985 Enable support for loading payloads from UBI. See
986 README.ubispl for more info.
988 menu "UBI configuration for SPL"
991 config SPL_UBI_LOAD_BY_VOLNAME
992 bool "Support loading volumes by name"
994 This enables support for loading UBI volumes by name. When this
995 is set, CONFIG_SPL_UBI_LOAD_MONITOR_VOLNAME can be used to
996 configure the volume name from which to load U-Boot.
998 config SPL_UBI_MAX_VOL_LEBS
999 int "Maximum number of LEBs per volume"
1001 The maximum number of logical eraseblocks which a static volume
1002 to load can contain. Used for sizing the scan data structure.
1004 config SPL_UBI_MAX_PEB_SIZE
1005 int "Maximum PEB size"
1007 The maximum physical erase block size.
1009 config SPL_UBI_MAX_PEBS
1010 int "Maximum number of PEBs"
1012 The maximum physical erase block size. If not overridden by
1013 board code, this value will be used as the actual number of PEBs.
1015 config SPL_UBI_PEB_OFFSET
1016 int "Offset to first UBI PEB"
1018 The offset in number of PEBs from the start of flash to the first
1019 PEB part of the UBI image.
1021 config SPL_UBI_VID_OFFSET
1022 int "Offset to VID header"
1024 config SPL_UBI_LEB_START
1025 int "Offset to LEB in PEB"
1027 The offset in bytes to the LEB within a PEB.
1029 config SPL_UBI_INFO_ADDR
1030 hex "Address to place UBI scan info"
1032 Address for ubispl to place the scan info. Read README.ubispl to
1033 determine the required size
1035 config SPL_UBI_VOL_IDS
1036 int "Maximum volume id"
1038 The maximum volume id which can be loaded. Used for sizing the
1039 scan data structure.
1041 config SPL_UBI_LOAD_MONITOR_ID
1042 int "id of U-Boot volume"
1044 The UBI volume id from which to load U-Boot
1046 config SPL_UBI_LOAD_MONITOR_VOLNAME
1047 string "volume name of U-Boot volume"
1048 depends on SPL_UBI_LOAD_BY_VOLNAME
1050 The UBI volume name from which to load U-Boot
1052 config SPL_UBI_LOAD_KERNEL_ID
1053 int "id of kernel volume"
1054 depends on SPL_OS_BOOT
1056 The UBI volume id from which to load the kernel
1058 config SPL_UBI_LOAD_ARGS_ID
1059 int "id of kernel args volume"
1060 depends on SPL_OS_BOOT
1062 The UBI volume id from which to load the device tree
1064 config UBI_SPL_SILENCE_MSG
1065 bool "silence UBI SPL messages"
1067 Disable messages from UBI SPL. This leaves warnings
1073 bool "Support SPI DM drivers in SPL"
1076 Enable support for SPI DM drivers in SPL.
1078 config SPL_DM_SPI_FLASH
1079 bool "Support SPI DM FLASH drivers in SPL"
1082 Enable support for SPI DM flash drivers in SPL.
1085 bool "Support networking"
1087 Enable support for network devices (such as Ethernet) in SPL.
1088 This permits SPL to load U-Boot over a network link rather than
1089 from an on-board peripheral. Environment support is required since
1090 the network stack uses a number of environment variables. See also
1093 config SPL_NET_VCI_STRING
1094 string "BOOTP Vendor Class Identifier string sent by SPL"
1097 As defined by RFC 2132 the vendor class identifier field can be
1098 sent by the client to identify the vendor type and configuration
1099 of a client. This is often used in practice to allow for the DHCP
1100 server to specify different files to load depending on if the ROM,
1101 SPL or U-Boot itself makes the request
1103 config SPL_NO_CPU_SUPPORT
1105 depends on (ARCH_MX23 || ARCH_MX28) && !SPL_FRAMEWORK
1107 This is specific to the ARM926EJ-S CPU. It disables the standard
1108 start.S start-up code, presumably so that a replacement can be
1109 used on that CPU. You should not enable it unless you know what
1112 config SPL_NOR_SUPPORT
1113 bool "Support NOR flash"
1115 Enable support for loading U-Boot from memory-mapped NOR (Negative
1116 OR) flash in SPL. NOR flash is slow to write but fast to read, and
1117 a memory-mapped device makes it very easy to access. Loading from
1118 NOR is typically achieved with just a memcpy().
1120 config SPL_XIP_SUPPORT
1123 Enable support for execute in place of U-Boot or kernel image. There
1124 is no need to copy image from flash to ram if flash supports execute
1125 in place. Its very useful in systems having enough flash but not
1126 enough ram to load the image.
1128 config SPL_ONENAND_SUPPORT
1129 bool "Support OneNAND flash"
1131 Enable support for OneNAND (Negative AND) flash in SPL. OneNAND is
1132 a type of NAND flash and therefore can be used to allow SPL to
1133 load U-Boot from supported devices. This enables the drivers in
1134 drivers/mtd/onenand as part of an SPL build.
1137 bool "Activate Falcon Mode"
1138 depends on !TI_SECURE_DEVICE
1140 Enable booting directly to an OS from SPL.
1141 for more info read doc/README.falcon
1143 config SPL_PAYLOAD_ARGS_ADDR
1144 hex "Address in memory to load 'args' file for Falcon Mode to"
1145 depends on SPL_OS_BOOT || SPL_LOAD_FIT_OPENSBI_OS_BOOT
1146 default 0x88000000 if ARCH_OMAP2PLUS
1147 default 0x99000000 if ARCH_SC5XX && SC59X_64
1148 default 0xA0000000 if ARCH_SC5XX && TARGET_SC594_SOM_EZKIT
1149 default 0x80000000 if ARCH_SC5XX && TARGET_SC594_SOM_EZLITE
1151 Address in memory where the 'args' file, typically a device tree
1152 will be loaded in to memory.
1154 config SYS_NAND_SPL_KERNEL_OFFS
1155 hex "Address in memory to load the OS file for Falcon mode to"
1156 depends on SPL_OS_BOOT && SPL_NAND_SUPPORT
1159 hex "addr, where OS is found"
1160 depends on SPL_OS_BOOT && SPL_NOR_SUPPORT
1162 Specify the address, where the OS image is found, which
1165 config SPL_FALCON_BOOT_MMCSD
1166 bool "Enable Falcon boot from MMC or SD media"
1167 depends on SPL_OS_BOOT && SPL_MMC
1168 select SPL_LOAD_BLOCK
1169 select SPL_SYS_MMCSD_RAW_MODE
1171 Select this if the Falcon mode OS image mode is on MMC or SD media.
1173 config SYS_MMCSD_RAW_MODE_KERNEL_SECTOR
1174 hex "Falcon mode: Sector to load kernel uImage from MMC"
1175 depends on SPL_FALCON_BOOT_MMCSD
1177 When Falcon mode is used with an MMC or SD media, SPL needs to know
1178 where to look for the kernel uImage. The image is expected to begin
1179 at the raw MMC specified in this config.
1180 Note that the Falcon mode image can also be a FIT, if FIT support is
1183 config SYS_MMCSD_RAW_MODE_ARGS_SECTOR
1184 hex "Falcon mode: Sector to load 'args' from MMC"
1185 depends on SPL_FALCON_BOOT_MMCSD
1187 When Falcon mode is used with an MMC or SD media, SPL needs to know
1188 where to look for the OS 'args', typically a device tree. The
1189 contents are expected to begin at the raw MMC specified in this config.
1190 Note that if using a FIT image, this and the next option can be set to
1193 config SYS_MMCSD_RAW_MODE_ARGS_SECTORS
1194 hex "Falcon mode: Number of sectors to load for 'args' from MMC"
1195 depends on SPL_FALCON_BOOT_MMCSD && SYS_MMCSD_RAW_MODE_ARGS_SECTOR != 0x0
1198 string "SPL payload"
1199 default "tpl/u-boot-with-tpl.bin" if TPL
1200 default "u-boot.bin"
1202 Payload for SPL boot. For backward compatibility, default to
1203 u-boot.bin, i.e. RAW image without any header. In case of
1204 TPL, tpl/u-boot-with-tpl.bin. For new boards, suggest to
1208 bool "Support PCI drivers"
1210 Enable support for PCI in SPL. For platforms that need PCI to boot,
1211 or must perform some init using PCI in SPL, this provides the
1212 necessary driver support. This enables the drivers in drivers/pci
1213 as part of an SPL build.
1216 bool "Support PCH drivers"
1218 Enable support for PCH (Platform Controller Hub) devices in SPL.
1219 These are used to set up GPIOs and the SPI peripheral early in
1220 boot. This enables the drivers in drivers/pch as part of an SPL
1223 config SPL_POST_MEM_SUPPORT
1224 bool "Support POST drivers"
1226 Enable support for POST (Power-on Self Test) in SPL. POST is a
1227 procedure that checks that the hardware (CPU or board) appears to
1228 be functionally correctly. It is a sanity check that can be
1229 performed before booting. This enables the drivers in post/drivers
1230 as part of an SPL build.
1233 bool "Support reset drivers"
1236 Enable support for reset control in SPL.
1237 That can be useful in SPL to handle IP reset in driver, as in U-Boot,
1238 by using the generic reset API provided by driver model.
1239 This enables the drivers in drivers/reset as part of an SPL build.
1242 bool "Support power drivers"
1244 Enable support for power control in SPL. This includes support
1245 for PMICs (Power-management Integrated Circuits) and some of the
1246 features provided by PMICs. In particular, voltage regulators can
1247 be used to enable/disable power and vary its voltage. That can be
1248 useful in SPL to turn on boot peripherals and adjust CPU voltage
1249 so that the clock speed can be increased. This enables the drivers
1250 in drivers/power, drivers/power/pmic and drivers/power/regulator
1251 as part of an SPL build.
1253 config SPL_POWER_DOMAIN
1254 bool "Support power domain drivers"
1257 Enable support for power domain control in SPL. Many SoCs allow
1258 power to be applied to or removed from portions of the SoC (power
1259 domains). This may be used to save power. This API provides the
1260 means to control such power management hardware. This enables
1261 the drivers in drivers/power/domain as part of a SPL build.
1263 config SPL_RAM_SUPPORT
1266 config SPL_RAM_DEVICE
1267 bool "Support booting from preloaded image in RAM"
1268 select SPL_RAM_SUPPORT
1269 default y if MICROBLAZE || ARCH_SOCFPGA || ARCH_TEGRA || ARCH_ZYNQ
1271 Enable booting of an image already loaded in RAM. The image has to
1272 be already in memory when SPL takes over, e.g. loaded by the boot
1275 config SPL_REMOTEPROC
1276 bool "Support REMOTEPROCS"
1278 Enable support for REMOTEPROCs in SPL. This permits to load
1279 a remote processor firmware in SPL.
1282 bool "Support RTC drivers"
1284 Enable RTC (Real-time Clock) support in SPL. This includes support
1285 for reading and setting the time. Some RTC devices also have some
1286 non-volatile (battery-backed) memory which is accessible if
1287 needed. This enables the drivers in drivers/rtc as part of an SPL
1291 bool "Support loading from SATA"
1293 Enable support for SATA (Serial AT attachment) in SPL. This allows
1294 use of SATA devices such as hard drives and flash drivers for
1295 loading U-Boot. SATA is used in higher-end embedded systems and
1296 can provide higher performance than MMC , at somewhat higher
1297 expense and power consumption. This enables loading from SATA
1298 using a configured device.
1300 config SYS_SATA_FAT_BOOT_PARTITION
1301 int "Partition on the SATA disk to load U-Boot from"
1302 depends on SPL_SATA && SPL_FS_FAT
1305 config SPL_SATA_RAW_U_BOOT_USE_SECTOR
1306 bool "SATA raw mode: by sector"
1308 default y if ARCH_MVEBU
1310 Use sector number for specifying U-Boot location on SATA disk in
1313 config SPL_SATA_RAW_U_BOOT_SECTOR
1314 hex "Sector on the SATA disk to load U-Boot from"
1315 depends on SPL_SATA_RAW_U_BOOT_USE_SECTOR
1316 default 0x1 if ARCH_MVEBU
1318 Sector on the SATA disk to load U-Boot from, when the SATA disk is being
1319 used in raw mode. Units: SATA disk sectors (1 sector = 512 bytes).
1322 bool "NVM Express device support"
1327 This option enables support for NVM Express devices.
1328 It supports basic functions of NVMe (read/write).
1331 bool "NVM Express PCI device support for SPL"
1332 depends on SPL_PCI && SPL_NVME
1334 This option enables support for NVM Express PCI devices.
1335 This allows use of NVMe devices for loading u-boot.
1337 config SPL_NVME_BOOT_DEVICE
1338 hex "NVMe boot device number"
1342 config SYS_NVME_BOOT_PARTITION
1343 hex "NVMe boot partition number"
1348 bool "Support serial"
1352 Enable support for serial in SPL. This allows use of a serial UART
1353 for displaying messages while SPL is running. It also brings in
1354 printf() and panic() functions. This should normally be enabled
1355 unless there are space reasons not to. Even then, consider
1356 enabling SPL_USE_TINY_PRINTF which is a small printf() version.
1359 bool "Support SPI drivers"
1361 Enable support for using SPI in SPL. This is used for connecting
1362 to SPI flash for loading U-Boot. See SPL_SPI_FLASH_SUPPORT for
1363 more details on that. The SPI driver provides the transport for
1364 data between the SPI flash and the CPU. This option can be used to
1365 enable SPI drivers that are needed for other purposes also, such
1368 config SPL_SPI_FLASH_SUPPORT
1369 bool "Support SPI flash drivers"
1372 Enable support for using SPI flash in SPL, and loading U-Boot from
1373 SPI flash. SPI flash (Serial Peripheral Bus flash) is named after
1374 the SPI bus that is used to connect it to a system. It is a simple
1375 but fast bidirectional 4-wire bus (clock, chip select and two data
1376 lines). This enables the drivers in drivers/mtd/spi as part of an
1377 SPL build. This normally requires SPL_SPI.
1379 if SPL_SPI_FLASH_SUPPORT
1381 config SPL_SPI_FLASH_TINY
1382 bool "Enable low footprint SPL SPI Flash support"
1383 depends on !SPI_FLASH_BAR
1384 default y if SPI_FLASH
1386 Enable lightweight SPL SPI Flash support that supports just reading
1387 data/images from flash. No support to write/erase flash. Enable
1388 this if you have SPL size limitations and don't need full
1389 fledged SPI flash support.
1391 config SPL_SPI_FLASH_SFDP_SUPPORT
1392 bool "SFDP table parsing support for SPI NOR flashes"
1393 depends on !SPI_FLASH_BAR && !SPL_SPI_FLASH_TINY
1395 Enable support for parsing and auto discovery of parameters for
1396 SPI NOR flashes using Serial Flash Discoverable Parameters (SFDP)
1397 tables as per JESD216 standard in SPL.
1399 config SPL_SPI_FLASH_MTD
1400 bool "Support for SPI flash MTD drivers in SPL"
1402 Enable support for SPI flash MTD drivers in SPL.
1405 bool "Support loading from SPI flash"
1407 Enable support for loading next stage, U-Boot or otherwise, from
1408 SPI NOR in U-Boot SPL.
1410 endif # SPL_SPI_FLASH_SUPPORT
1412 config SYS_SPI_U_BOOT_OFFS
1413 hex "address of u-boot payload in SPI flash"
1414 default 0x8000 if ARCH_SUNXI
1416 depends on SPL_SPI_LOAD || SPL_SPI_SUNXI
1418 Address within SPI-Flash from where the u-boot payload is fetched
1422 bool "Driver support for thermal devices"
1424 Enable support for temperature-sensing devices. Some SoCs have on-chip
1425 temperature sensors to permit warnings, speed throttling or even
1426 automatic power-off when the temperature gets too high or low. Other
1427 devices may be discrete but connected on a suitable bus.
1430 bool "Support watchdog drivers"
1431 imply SPL_WDT if !HW_WATCHDOG
1433 Enable support for watchdog drivers in SPL. A watchdog is
1434 typically a hardware peripheral which can reset the system when it
1435 detects no activity for a while (such as a software crash). This
1436 enables the drivers in drivers/watchdog as part of an SPL build.
1438 config SPL_YMODEM_SUPPORT
1439 bool "Support loading using Ymodem"
1440 depends on SPL_SERIAL
1442 While loading from serial is slow it can be a useful backup when
1443 there is no other option. The Ymodem protocol provides a reliable
1444 means of transmitting U-Boot over a serial line for using in SPL,
1445 with a checksum to ensure correctness.
1448 bool "Support ARM Trusted Firmware"
1450 depends on SPL_LOAD_FIT && !SPL_FIT_IMAGE_TINY
1452 ATF(ARM Trusted Firmware) is a component for ARM AArch64 which
1453 is loaded by SPL (which is considered as BL2 in ATF terminology).
1454 More detail at: https://github.com/ARM-software/arm-trusted-firmware
1456 config SPL_ATF_LOAD_IMAGE_V2
1457 bool "Use the new LOAD_IMAGE_V2 parameter passing"
1460 Some platforms use the newer LOAD_IMAGE_V2 parameter passing.
1462 If you want to load a bl31 image from the SPL and need the new
1465 config SPL_ATF_NO_PLATFORM_PARAM
1466 bool "Pass no platform parameter"
1469 While we expect to call a pointer to a valid FDT (or NULL)
1470 as the platform parameter to an ATF, some ATF versions are
1471 not U-Boot aware and have an insufficiently robust parameter
1472 validation to gracefully reject a FDT being passed.
1474 If this option is enabled, the spl_atf os-type handler will
1475 always pass NULL for the platform parameter.
1477 If your ATF is affected, say Y.
1479 config SPL_AM33XX_ENABLE_RTC32K_OSC
1480 bool "Enable the RTC32K OSC on AM33xx based platforms"
1484 Enable access to the AM33xx RTC and select the external 32kHz clock
1487 config SPL_OPTEE_IMAGE
1488 bool "Support OP-TEE Trusted OS image in SPL"
1490 depends on SPL_LOAD_FIT || SPL_LOAD_FIT_FULL
1492 OP-TEE is an open source Trusted OS which is loaded by SPL.
1493 More detail at: https://github.com/OP-TEE/optee_os
1496 bool "Support RISC-V OpenSBI"
1497 depends on RISCV && SPL_RISCV_MMODE && RISCV_SMODE
1498 depends on SPL_LOAD_FIT && !SPL_FIT_IMAGE_TINY
1500 OpenSBI is an open-source implementation of the RISC-V Supervisor Binary
1501 Interface (SBI) specification. U-Boot supports the OpenSBI FW_DYNAMIC
1502 firmware. It is loaded and started by U-Boot SPL.
1504 More details are available at https://github.com/riscv/opensbi and
1505 https://github.com/riscv/riscv-sbi-doc
1507 config SPL_OPENSBI_LOAD_ADDR
1508 hex "OpenSBI load address"
1509 depends on SPL_OPENSBI
1511 Load address of the OpenSBI binary.
1513 config SPL_OPENSBI_SCRATCH_OPTIONS
1514 hex "Scratch options passed to OpenSBI"
1516 depends on SPL_OPENSBI
1518 This bitmap of options is passed from U-Boot SPL to OpenSBI.
1519 As of OpenSBI 1.3 the following bits are defined:
1520 - SBI_SCRATCH_NO_BOOT_PRINTS = 0x1 (Disable prints during boot)
1521 - SBI_SCRATCH_DEBUG_PRINTS = 0x2 (Enable runtime debug prints)
1524 string "Addtional build targets for 'make'"
1525 default "spl/u-boot-spl.srec" if RCAR_GEN2
1526 default "spl/u-boot-spl.scif" if RCAR_GEN3
1529 On some platforms we need to have 'make' run additional build target
1530 rules. If required on your platform, enter it here, otherwise leave blank.
1533 config SPL_AT91_MCK_BYPASS
1534 bool "Use external clock signal as a source of main clock for AT91 platforms"
1535 depends on ARCH_AT91
1537 Use external 8 to 24 Mhz clock signal as source of main clock instead
1538 of an external crystal oscillator.
1539 This option disables the internal driving on the XOUT pin.
1540 The external source has to provide a stable clock on the XIN pin.
1541 If this option is disabled, the SoC expects a crystal oscillator
1542 that needs driving on both XIN and XOUT lines.
1546 depends on SUPPORT_TPL
1549 If you want to build TPL as well as the normal image and SPL, say Y.
1551 source "common/spl/Kconfig.tpl"
1554 depends on SUPPORT_SPL
1557 If you want to build VPL as well as the normal image, TPL and SPL,
1560 source "common/spl/Kconfig.vpl"