5 config ANDROID_BOOT_IMAGE
6 bool "Enable support for Android Boot Images"
9 This enables support for booting images which use the Android
13 bool "Support Flattened Image Tree"
19 This option allows you to boot the new uImage structure,
20 Flattened Image Tree. FIT is formally a FDT, which can include
21 images of various types (kernel, FDT blob, ramdisk, etc.)
22 in a single blob. To boot this new uImage structure,
23 pass the address of the blob to the "bootm" command.
24 FIT is very flexible, supporting compression, multiple images,
25 multiple configurations, verification through hashing and also
26 verified boot (secure boot using RSA).
29 bool "Show image date and time when displaying image information"
32 When CONFIG_TIMESTAMP is selected, the timestamp (date and time) of
33 an image is printed by image commands like bootm or iminfo. This
34 is shown as 'Timestamp: xxx' and 'Created: xxx'. If this option is
35 enabled, then U-Boot requires FITs to have a timestamp. If a FIT is
36 loaded that does not, the message 'Wrong FIT format: no timestamp'
41 config FIT_EXTERNAL_OFFSET
42 hex "FIT external data offset"
45 This specifies a data offset in fit image.
46 The offset is from data payload offset to the beginning of
47 fit image header. When specifies a offset, specific data
48 could be put in the hole between data payload and fit image
49 header, such as CSF data on i.MX platform.
52 bool "Do a full check of the FIT before using it"
55 Enable this do a full check of the FIT to make sure it is valid. This
56 helps to protect against carefully crafted FITs which take advantage
57 of bugs or omissions in the code. This includes a bad structure,
58 multiple root nodes and the like.
61 bool "Enable signature verification of FIT uImages"
66 select IMAGE_SIGN_INFO
69 This option enables signature verification of FIT uImages,
70 using a hash signed and verified using RSA. If
71 CONFIG_SHA_PROG_HW_ACCEL is defined, i.e support for progressive
72 hashing is available using hardware, then the RSA library will use
73 it. See doc/uImage.FIT/signature.txt for more details.
75 WARNING: When relying on signed FIT images with a required signature
76 check the legacy image format is disabled by default, so that
77 unsigned images cannot be loaded. If a board needs the legacy image
78 format support in this case, enable it using
79 CONFIG_LEGACY_IMAGE_FORMAT.
81 config FIT_SIGNATURE_MAX_SIZE
82 hex "Max size of signed FIT structures"
83 depends on FIT_SIGNATURE
86 This option sets a max size in bytes for verified FIT uImages.
87 A sane value of 256MB protects corrupted DTB structures from overlapping
88 device memory. Assure this size does not extend past expected storage
92 bool "Support rsassa-pss signature scheme of FIT image contents"
93 depends on FIT_SIGNATURE
95 Enable this to support the pss padding algorithm as described
96 in the rfc8017 (https://tools.ietf.org/html/rfc8017).
99 bool "Enable ciphering data in a FIT uImages"
103 Enable the feature of data ciphering/unciphering in the tool mkimage
104 and in the u-boot support of the FIT image.
107 bool "Show verbose messages when FIT images fail"
109 Generally a system will have valid FIT images so debug messages
110 are a waste of code space. If you are debugging your images then
111 you can enable this option to get more verbose information about
114 config FIT_BEST_MATCH
115 bool "Select the best match for the kernel device tree"
117 When no configuration is explicitly selected, default to the
118 one whose fdt's compatibility field best matches that of
119 U-Boot itself. A match is considered "best" if it matches the
120 most specific compatibility entry of U-Boot's fdt's root node.
121 The order of entries in the configuration's fdt is ignored.
123 config FIT_IMAGE_POST_PROCESS
124 bool "Enable post-processing of FIT artifacts after loading by U-Boot"
125 depends on TI_SECURE_DEVICE || SOCFPGA_SECURE_VAB_AUTH
126 default y if TI_SECURE_DEVICE
128 Allows doing any sort of manipulation to blobs after they got extracted
129 from FIT images like stripping off headers or modifying the size of the
130 blob, verification, authentication, decryption etc. in a platform or
131 board specific way. In order to use this feature a platform or board-
132 specific implementation of board_fit_image_post_process() must be
133 provided. Also, anything done during this post-processing step would
134 need to be comprehended in how the images were prepared before being
135 injected into the FIT creation (i.e. the blobs would have been pre-
136 processed before being added to the FIT image).
139 bool "Support FIT printing"
142 Support printing the content of the fitImage in a verbose manner.
147 bool "Support Flattened Image Tree within SPL"
153 bool "Support FIT printing within SPL"
156 Support printing the content of the fitImage in a verbose manner in SPL.
158 config SPL_FIT_FULL_CHECK
159 bool "Do a full check of the FIT before using it"
161 Enable this do a full check of the FIT to make sure it is valid. This
162 helps to protect against carefully crafted FITs which take advantage
163 of bugs or omissions in the code. This includes a bad structure,
164 multiple root nodes and the like.
167 config SPL_FIT_SIGNATURE
168 bool "Enable signature verification of FIT firmware within SPL"
170 depends on SPL_LOAD_FIT || SPL_LOAD_FIT_FULL
177 select SPL_IMAGE_SIGN_INFO
178 select SPL_FIT_FULL_CHECK
180 config SPL_FIT_SIGNATURE_MAX_SIZE
181 hex "Max size of signed FIT structures in SPL"
182 depends on SPL_FIT_SIGNATURE
185 This option sets a max size in bytes for verified FIT uImages.
186 A sane value of 256MB protects corrupted DTB structures from overlapping
187 device memory. Assure this size does not extend past expected storage
190 config SPL_FIT_RSASSA_PSS
191 bool "Support rsassa-pss signature scheme of FIT image contents in SPL"
192 depends on SPL_FIT_SIGNATURE
194 Enable this to support the pss padding algorithm as described
195 in the rfc8017 (https://tools.ietf.org/html/rfc8017) in SPL.
198 bool "Enable SPL loading U-Boot as a FIT (basic fitImage features)"
201 Normally with the SPL framework a legacy image is generated as part
202 of the build. This contains U-Boot along with information as to
203 where it should be loaded. This option instead enables generation
204 of a FIT (Flat Image Tree) which provides more flexibility. In
205 particular it can handle selecting from multiple device tree
206 and passing the correct one to U-Boot.
208 This path has the following limitations:
210 1. "loadables" images, other than FDTs, which do not have a "load"
211 property will not be loaded. This limitation also applies to FPGA
212 images with the correct "compatible" string.
213 2. For FPGA images, the supported "compatible" list is in the
214 doc/uImage.FIT/source_file_format.txt.
215 3. FDTs are only loaded for images with an "os" property of "u-boot".
216 "linux" images are also supported with Falcon boot mode.
218 config SPL_LOAD_FIT_ADDRESS
219 hex "load address of fit image"
220 depends on SPL_LOAD_FIT
223 Specify the load address of the fit image that will be loaded
226 config SPL_LOAD_FIT_APPLY_OVERLAY
227 bool "Enable SPL applying DT overlays from FIT"
228 depends on SPL_LOAD_FIT
229 select OF_LIBFDT_OVERLAY
231 The device tree is loaded from the FIT image. Allow the SPL is to
232 also load device-tree overlays from the FIT image an apply them
233 over the device tree.
235 config SPL_LOAD_FIT_APPLY_OVERLAY_BUF_SZ
236 depends on SPL_LOAD_FIT_APPLY_OVERLAY
238 hex "size of temporary buffer used to load the overlays"
240 The size of the area where the overlays will be loaded and
241 uncompress. Must be at least as large as biggest overlay
244 config SPL_LOAD_FIT_FULL
245 bool "Enable SPL loading U-Boot as a FIT (full fitImage features)"
248 Normally with the SPL framework a legacy image is generated as part
249 of the build. This contains U-Boot along with information as to
250 where it should be loaded. This option instead enables generation
251 of a FIT (Flat Image Tree) which provides more flexibility. In
252 particular it can handle selecting from multiple device tree
253 and passing the correct one to U-Boot.
255 config SPL_FIT_IMAGE_POST_PROCESS
256 bool "Enable post-processing of FIT artifacts after loading by the SPL"
257 depends on SPL_LOAD_FIT
258 default y if TI_SECURE_DEVICE
260 Allows doing any sort of manipulation to blobs after they got extracted
261 from the U-Boot FIT image like stripping off headers or modifying the
262 size of the blob, verification, authentication, decryption etc. in a
263 platform or board specific way. In order to use this feature a platform
264 or board-specific implementation of board_fit_image_post_process() must
265 be provided. Also, anything done during this post-processing step would
266 need to be comprehended in how the images were prepared before being
267 injected into the FIT creation (i.e. the blobs would have been pre-
268 processed before being added to the FIT image).
270 config SPL_FIT_SOURCE
271 string ".its source file for U-Boot FIT image"
274 Specifies a (platform specific) FIT source file to generate the
275 U-Boot FIT image. This could specify further image to load and/or
278 config USE_SPL_FIT_GENERATOR
279 bool "Use a script to generate the .its script"
280 default y if SPL_FIT && (!ARCH_SUNXI && !RISCV)
282 config SPL_FIT_GENERATOR
283 string ".its file generator script for U-Boot FIT image"
284 depends on USE_SPL_FIT_GENERATOR
285 default "arch/arm/mach-rockchip/make_fit_atf.py" if SPL_LOAD_FIT && ARCH_ROCKCHIP
286 default "arch/arm/mach-zynqmp/mkimage_fit_atf.sh" if SPL_LOAD_FIT && ARCH_ZYNQMP
288 Specifies a (platform specific) script file to generate the FIT
289 source file used to build the U-Boot FIT image file. This gets
290 passed a list of supported device tree file stub names to
291 include in the generated image.
301 Utilities for parsing PXE file formats.
304 bool "Standard boot support"
306 depends on DM && OF_CONTROL && BLK
308 U-Boot supports a standard way of locating something to boot,
309 typically an Operating System such as Linux, provided by a distro such
310 as Arch Linux or Debian. Enable this to support iterating through
311 available bootdevs and using bootmeths to find bootflows suitable for
314 Standard boot is not a standard way of booting, just a framework
315 within U-Boot for supporting all the different ways that exist.
319 - bootdev - a device which can hold a distro (e.g. MMC)
320 - bootmeth - a method to scan a bootdev to find bootflows (owned by
322 - bootflow - a description of how to boot (owned by the distro)
325 bool "Enhanced features for standard boot"
328 This enables various useful features for standard boot, which are not
329 essential for operation:
331 - bootdev, bootmeth commands
332 - extra features in the bootflow command
333 - support for selecting the ordering of bootmeths ("bootmeth order")
334 - support for selecting the ordering of bootdevs using the devicetree
335 as well as the "boot_targets" environment variable
339 config BOOTSTD_BOOTCOMMAND
340 bool "Use bootstd to boot"
341 default y if !DISTRO_DEFAULTS
343 Enable this to select a default boot-command suitable for booting
344 with standard boot. This can be overridden by the board if needed,
345 but the default command should be enough for most boards which use
348 For now this is only selected if distro boot is NOT used, since
349 standard boot does not support all of the features of distro boot
352 config BOOTMETH_GLOBAL
355 Add support for global bootmeths. This feature is used by VBE and
356 EFI bootmgr, since they take full control over which bootdevs are
359 config BOOTMETH_DISTRO
360 bool "Bootdev support for distro boot"
364 Enables support for distro boot using bootdevs. This makes the
365 bootdevs look for a 'extlinux/extlinux.conf' on each filesystem
368 This provides a way to try out standard boot on an existing boot flow.
370 config BOOTMETH_DISTRO_PXE
371 bool "Bootdev support for distro boot over network"
372 depends on CMD_PXE && CMD_NET && DM_ETH
375 Enables support for distro boot using bootdevs. This makes the
376 bootdevs look for a 'extlinux/extlinux.conf' on the tftp server.
378 This provides a way to try out standard boot on an existing boot flow.
380 config BOOTMETH_EFILOADER
381 bool "Bootdev support for EFI boot"
382 depends on CMD_BOOTEFI
385 Enables support for EFI boot using bootdevs. This makes the
386 bootdevs look for a 'boot<arch>.efi' on each filesystem
387 they scan. The resulting file is booted after enabling U-Boot's
390 The <arch> depends on the architecture of the board:
392 aa64 - aarch64 (ARM 64-bit)
396 riscv32 - RISC-V 32-bit
397 riscv64 - RISC-V 64-bit
399 This provides a way to try out standard boot on an existing boot flow.
402 bool "Bootdev support for Verified Boot for Embedded"
405 select BOOTMETH_GLOBAL
407 Enables support for VBE boot. This is a standard boot method which
408 supports selection of various firmware components, seleciton of an OS to
409 boot as well as updating these using fwupd.
413 config BOOTMETH_VBE_SIMPLE
414 bool "Bootdev support for VBE 'simple' method"
417 Enables support for VBE 'simple' boot. This allows updating a single
418 firmware image in boot media such as MMC. It does not support any sort
419 of rollback, recovery or A/B boot.
423 config BOOTMETH_SANDBOX
427 This is a sandbox bootmeth driver used for testing. It always returns
428 -ENOTSUPP when attempting to boot.
430 config BOOTMETH_SCRIPT
431 bool "Bootdev support for U-Boot scripts"
432 default y if BOOTSTD_FULL
434 Enables support for booting a distro via a U-Boot script. This makes
435 the bootdevs look for a 'boot/boot.scr' file which can be used to
438 This provides a way to try out standard boot on an existing boot flow.
439 It is not enabled by default to save space.
443 config LEGACY_IMAGE_FORMAT
444 bool "Enable support for the legacy image format"
445 default y if !FIT_SIGNATURE && !TI_SECURE_DEVICE
447 This option enables the legacy image format. It is enabled by
448 default for backward compatibility, unless FIT_SIGNATURE is
449 set where it is disabled so that unsigned images cannot be
450 loaded. If a board needs the legacy image format support in this
451 case, enable it here.
453 config SUPPORT_RAW_INITRD
454 bool "Enable raw initrd images"
456 Note, defining the SUPPORT_RAW_INITRD allows user to supply
457 kernel with raw initrd images. The syntax is slightly different, the
458 address of the initrd must be augmented by it's size, in the following
459 format: "<initrd address>:<initrd size>".
461 config OF_BOARD_SETUP
462 bool "Set up board-specific details in device tree before boot"
465 This causes U-Boot to call ft_board_setup() before booting into
466 the Operating System. This function can set up various
467 board-specific information in the device tree for use by the OS.
468 The device tree is then passed to the OS.
470 config OF_SYSTEM_SETUP
471 bool "Set up system-specific details in device tree before boot"
474 This causes U-Boot to call ft_system_setup() before booting into
475 the Operating System. This function can set up various
476 system-specific information in the device tree for use by the OS.
477 The device tree is then passed to the OS.
479 config OF_STDOUT_VIA_ALIAS
480 bool "Update the device-tree stdout alias from U-Boot"
483 This uses U-Boot's serial alias from the aliases node to update
484 the device tree passed to the OS. The "linux,stdout-path" property
485 in the chosen node is set to point to the correct serial node.
486 This option currently references CONFIG_CONS_INDEX, which is
487 incorrect when used with device tree as this option does not
488 exist / should not be used.
490 config HAVE_SYS_TEXT_BASE
492 depends on !NIOS2 && !XTENSA
497 depends on HAVE_SYS_TEXT_BASE
498 default 0x0 if POSITION_INDEPENDENT
499 default 0x80800000 if ARCH_OMAP2PLUS || ARCH_K3
500 default 0x81700000 if MACH_SUNIV
501 default 0x2a000000 if MACH_SUN9I
502 default 0x4a000000 if SUNXI_MINIMUM_DRAM_MB >= 256
503 default 0x42e00000 if SUNXI_MINIMUM_DRAM_MB >= 64
506 The address in memory that U-Boot will be running from, initially.
508 config HAVE_SYS_MONITOR_BASE
510 depends on ARC || MIPS || M68K || NIOS2 || PPC || XTENSA || X86 \
511 || ENV_IS_IN_FLASH || MTD_NOR_FLASH
515 config SYS_MONITOR_BASE
516 depends on HAVE_SYS_MONITOR_BASE
517 hex "Physical start address of boot monitor code"
518 default SYS_TEXT_BASE
520 The physical start address of boot monitor code (which is the same as
521 CONFIG_SYS_TEXT_BASE when linking) and the same as CONFIG_SYS_FLASH_BASE
522 when booting from flash.
524 config SPL_SYS_MONITOR_BASE
525 depends on MPC85xx && SPL && HAVE_SYS_MONITOR_BASE
526 hex "Physical start address of SPL monitor code"
527 default SPL_TEXT_BASE
529 config TPL_SYS_MONITOR_BASE
530 depends on MPC85xx && TPL && HAVE_SYS_MONITOR_BASE
531 hex "Physical start address of TPL monitor code"
533 config DYNAMIC_SYS_CLK_FREQ
534 bool "Determine CPU clock frequency at run-time"
536 Implement a get_board_sys_clk function that will determine the CPU
537 clock frequency at run time, rather than define it statically.
540 depends on !DYNAMIC_SYS_CLK_FREQ
541 int "CPU clock frequency"
542 default 125000000 if ARCH_LS1012A
543 default 100000000 if ARCH_P2020 || ARCH_T1024 || ARCH_T1042 || \
544 ARCH_LS1021A || FSL_LSCH2 || FSL_LSCH3
545 default 66666666 if ARCH_P1010 || ARCH_P1020 || ARCH_T4240
546 default 66660000 if ARCH_T2080
547 default 33333333 if RCAR_GEN3
548 default 24000000 if ARCH_EXYNOS
549 default 20000000 if RCAR_GEN2
552 A static value for the CPU frequency. Note that if not required
553 for a given SoC, this can be left at 0.
555 config ARCH_FIXUP_FDT_MEMORY
556 bool "Enable arch_fixup_memory_banks() call"
559 Enable FDT memory map syncup before OS boot. This feature can be
560 used for booting OS with different memory setup where the part of
561 the memory location should be used for different purpose.
564 bool "Support booting Chrome OS"
566 Chrome OS requires U-Boot to set up a table indicating the boot mode
567 (e.g. Developer mode) and a few other things. Enable this if you are
568 booting on a Chromebook to avoid getting an error about an invalid
571 config CHROMEOS_VBOOT
572 bool "Support Chrome OS verified boot"
574 This is intended to enable the full Chrome OS verified boot support
575 in U-Boot. It is not actually implemented in the U-Boot source code
576 at present, so this option is always set to 'n'. It allows
577 distinguishing between booting Chrome OS in a basic way (developer
578 mode) and a full boot.
584 bool "Freescale PBL(pre-boot loader) image format support"
585 select SYS_RAMBOOT if PPC
587 Some SoCs use PBL to load RCW and/or pre-initialization instructions.
588 For more details refer to doc/README.pblimage
591 prompt "Freescale PBL load location"
592 depends on RAMBOOT_PBL || ((TARGET_P1010RDB_PA || TARGET_P1010RDB_PB \
593 || TARGET_P1020RDB_PC || TARGET_P1020RDB_PD || TARGET_P2020RDB) \
597 bool "Freescale PBL is found on SD card"
600 bool "Freescale PBL is found on SPI flash"
604 config FSL_FIXED_MMC_LOCATION
605 bool "PBL MMC is at a fixed location"
606 depends on SDCARD && !RAMBOOT_PBL
608 config ESDHC_HC_BLK_ADDR
610 depends on FSL_FIXED_MMC_LOCATION && (ARCH_BSC9131 || ARCH_BSC9132 || ARCH_P1010)
612 In High Capacity SD Cards (> 2 GBytes), the 32-bit source address and
613 code length of these soc specify the memory address in block address
614 format. Block length is fixed to 512 bytes as per the SD High
615 Capacity specification.
617 config SYS_FSL_PBL_PBI
618 string "PBI(pre-boot instructions) commands for the PBL image"
619 depends on RAMBOOT_PBL
621 PBI commands can be used to configure SoC before it starts the execution.
622 Please refer doc/README.pblimage for more details.
624 config SYS_FSL_PBL_RCW
625 string "Aadditional RCW (Power on reset configuration) for the PBL image"
626 depends on RAMBOOT_PBL
628 Enables addition of RCW (Power on reset configuration) in built image.
629 Please refer doc/README.pblimage for more details.
631 config SYS_BOOT_RAMDISK_HIGH
632 depends on CMD_BOOTM || CMD_BOOTI || CMD_BOOTZ
633 depends on !(NIOS2 || SANDBOX || SH || XTENSA)
636 Enable initrd_high functionality. If defined then the initrd_high
637 feature is enabled and the boot* ramdisk subcommand is enabled.
639 endmenu # Boot images
644 bool "Boot timing and reporting"
646 Enable recording of boot time while booting. To use it, insert
647 calls to bootstage_mark() with a suitable BOOTSTAGE_ID from
648 bootstage.h. Only a single entry is recorded for each ID. You can
649 give the entry a name with bootstage_mark_name(). You can also
650 record elapsed time in a particular stage using bootstage_start()
651 before starting and bootstage_accum() when finished. Bootstage will
652 add up all the accumulated time and report it.
654 Normally, IDs are defined in bootstage.h but a small number of
655 additional 'user' IDs can be used by passing BOOTSTAGE_ID_ALLOC
658 Calls to show_boot_progress() will also result in log entries but
659 these will not have names.
662 bool "Boot timing and reported in SPL"
663 depends on BOOTSTAGE && SPL
665 Enable recording of boot time in SPL. To make this visible to U-Boot
666 proper, enable BOOTSTAGE_STASH as well. This will stash the timing
667 information when SPL finishes and load it when U-Boot proper starts
671 bool "Boot timing and reported in TPL"
672 depends on BOOTSTAGE && TPL
674 Enable recording of boot time in SPL. To make this visible to U-Boot
675 proper, enable BOOTSTAGE_STASH as well. This will stash the timing
676 information when TPL finishes and load it when U-Boot proper starts
679 config BOOTSTAGE_REPORT
680 bool "Display a detailed boot timing report before booting the OS"
683 Enable output of a boot time report just before the OS is booted.
684 This shows how long it took U-Boot to go through each stage of the
685 boot process. The report looks something like this:
687 Timer summary in microseconds:
690 3,575,678 3,575,678 board_init_f start
691 3,575,695 17 arch_cpu_init A9
692 3,575,777 82 arch_cpu_init done
693 3,659,598 83,821 board_init_r start
694 3,910,375 250,777 main_loop
695 29,916,167 26,005,792 bootm_start
696 30,361,327 445,160 start_kernel
698 config BOOTSTAGE_RECORD_COUNT
699 int "Number of boot stage records to store"
703 This is the size of the bootstage record list and is the maximum
704 number of bootstage records that can be recorded.
706 config SPL_BOOTSTAGE_RECORD_COUNT
707 int "Number of boot stage records to store for SPL"
708 depends on SPL_BOOTSTAGE
711 This is the size of the bootstage record list and is the maximum
712 number of bootstage records that can be recorded.
714 config TPL_BOOTSTAGE_RECORD_COUNT
715 int "Number of boot stage records to store for TPL"
716 depends on TPL_BOOTSTAGE
719 This is the size of the bootstage record list and is the maximum
720 number of bootstage records that can be recorded.
723 bool "Store boot timing information in the OS device tree"
726 Stash the bootstage information in the FDT. A root 'bootstage'
727 node is created with each bootstage id as a child. Each child
728 has a 'name' property and either 'mark' containing the
729 mark time in microseconds, or 'accum' containing the
730 accumulated time for that bootstage id in microseconds.
735 name = "board_init_f";
744 Code in the Linux kernel can find this in /proc/devicetree.
746 config BOOTSTAGE_STASH
747 bool "Stash the boot timing information in memory before booting OS"
750 Some OSes do not support device tree. Bootstage can instead write
751 the boot timing information in a binary format at a given address.
752 This happens through a call to bootstage_stash(), typically in
753 the CPU's cleanup_before_linux() function. You can use the
754 'bootstage stash' and 'bootstage unstash' commands to do this on
757 config BOOTSTAGE_STASH_ADDR
758 hex "Address to stash boot timing information"
761 Provide an address which will not be overwritten by the OS when it
762 starts, so that it can read this information when ready.
764 config BOOTSTAGE_STASH_SIZE
765 hex "Size of boot timing stash region"
768 This should be large enough to hold the bootstage stash. A value of
769 4096 (4KiB) is normally plenty.
771 config SHOW_BOOT_PROGRESS
772 bool "Show boot progress in a board-specific manner"
774 Defining this option allows to add some board-specific code (calling
775 a user-provided function show_boot_progress(int) that enables you to
776 show the system's boot progress on some display (for example, some
777 LEDs) on your board. At the moment, the following checkpoints are
780 Legacy uImage format:
783 1 common/cmd_bootm.c before attempting to boot an image
784 -1 common/cmd_bootm.c Image header has bad magic number
785 2 common/cmd_bootm.c Image header has correct magic number
786 -2 common/cmd_bootm.c Image header has bad checksum
787 3 common/cmd_bootm.c Image header has correct checksum
788 -3 common/cmd_bootm.c Image data has bad checksum
789 4 common/cmd_bootm.c Image data has correct checksum
790 -4 common/cmd_bootm.c Image is for unsupported architecture
791 5 common/cmd_bootm.c Architecture check OK
792 -5 common/cmd_bootm.c Wrong Image Type (not kernel, multi)
793 6 common/cmd_bootm.c Image Type check OK
794 -6 common/cmd_bootm.c gunzip uncompression error
795 -7 common/cmd_bootm.c Unimplemented compression type
796 7 common/cmd_bootm.c Uncompression OK
797 8 common/cmd_bootm.c No uncompress/copy overwrite error
798 -9 common/cmd_bootm.c Unsupported OS (not Linux, BSD, VxWorks, QNX)
800 9 common/image.c Start initial ramdisk verification
801 -10 common/image.c Ramdisk header has bad magic number
802 -11 common/image.c Ramdisk header has bad checksum
803 10 common/image.c Ramdisk header is OK
804 -12 common/image.c Ramdisk data has bad checksum
805 11 common/image.c Ramdisk data has correct checksum
806 12 common/image.c Ramdisk verification complete, start loading
807 -13 common/image.c Wrong Image Type (not PPC Linux ramdisk)
808 13 common/image.c Start multifile image verification
809 14 common/image.c No initial ramdisk, no multifile, continue.
811 15 arch/<arch>/lib/bootm.c All preparation done, transferring control to OS
813 -30 arch/powerpc/lib/board.c Fatal error, hang the system
814 -31 post/post.c POST test failed, detected by post_output_backlog()
815 -32 post/post.c POST test failed, detected by post_run_single()
817 34 common/cmd_doc.c before loading a Image from a DOC device
818 -35 common/cmd_doc.c Bad usage of "doc" command
819 35 common/cmd_doc.c correct usage of "doc" command
820 -36 common/cmd_doc.c No boot device
821 36 common/cmd_doc.c correct boot device
822 -37 common/cmd_doc.c Unknown Chip ID on boot device
823 37 common/cmd_doc.c correct chip ID found, device available
824 -38 common/cmd_doc.c Read Error on boot device
825 38 common/cmd_doc.c reading Image header from DOC device OK
826 -39 common/cmd_doc.c Image header has bad magic number
827 39 common/cmd_doc.c Image header has correct magic number
828 -40 common/cmd_doc.c Error reading Image from DOC device
829 40 common/cmd_doc.c Image header has correct magic number
830 41 common/cmd_ide.c before loading a Image from a IDE device
831 -42 common/cmd_ide.c Bad usage of "ide" command
832 42 common/cmd_ide.c correct usage of "ide" command
833 -43 common/cmd_ide.c No boot device
834 43 common/cmd_ide.c boot device found
835 -44 common/cmd_ide.c Device not available
836 44 common/cmd_ide.c Device available
837 -45 common/cmd_ide.c wrong partition selected
838 45 common/cmd_ide.c partition selected
839 -46 common/cmd_ide.c Unknown partition table
840 46 common/cmd_ide.c valid partition table found
841 -47 common/cmd_ide.c Invalid partition type
842 47 common/cmd_ide.c correct partition type
843 -48 common/cmd_ide.c Error reading Image Header on boot device
844 48 common/cmd_ide.c reading Image Header from IDE device OK
845 -49 common/cmd_ide.c Image header has bad magic number
846 49 common/cmd_ide.c Image header has correct magic number
847 -50 common/cmd_ide.c Image header has bad checksum
848 50 common/cmd_ide.c Image header has correct checksum
849 -51 common/cmd_ide.c Error reading Image from IDE device
850 51 common/cmd_ide.c reading Image from IDE device OK
851 52 common/cmd_nand.c before loading a Image from a NAND device
852 -53 common/cmd_nand.c Bad usage of "nand" command
853 53 common/cmd_nand.c correct usage of "nand" command
854 -54 common/cmd_nand.c No boot device
855 54 common/cmd_nand.c boot device found
856 -55 common/cmd_nand.c Unknown Chip ID on boot device
857 55 common/cmd_nand.c correct chip ID found, device available
858 -56 common/cmd_nand.c Error reading Image Header on boot device
859 56 common/cmd_nand.c reading Image Header from NAND device OK
860 -57 common/cmd_nand.c Image header has bad magic number
861 57 common/cmd_nand.c Image header has correct magic number
862 -58 common/cmd_nand.c Error reading Image from NAND device
863 58 common/cmd_nand.c reading Image from NAND device OK
865 -60 common/env_common.c Environment has a bad CRC, using default
867 64 net/eth.c starting with Ethernet configuration.
868 -64 net/eth.c no Ethernet found.
869 65 net/eth.c Ethernet found.
871 -80 common/cmd_net.c usage wrong
872 80 common/cmd_net.c before calling net_loop()
873 -81 common/cmd_net.c some error in net_loop() occurred
874 81 common/cmd_net.c net_loop() back without error
875 -82 common/cmd_net.c size == 0 (File with size 0 loaded)
876 82 common/cmd_net.c trying automatic boot
877 83 common/cmd_net.c running "source" command
878 -83 common/cmd_net.c some error in automatic boot or "source" command
879 84 common/cmd_net.c end without errors
884 100 common/cmd_bootm.c Kernel FIT Image has correct format
885 -100 common/cmd_bootm.c Kernel FIT Image has incorrect format
886 101 common/cmd_bootm.c No Kernel subimage unit name, using configuration
887 -101 common/cmd_bootm.c Can't get configuration for kernel subimage
888 102 common/cmd_bootm.c Kernel unit name specified
889 -103 common/cmd_bootm.c Can't get kernel subimage node offset
890 103 common/cmd_bootm.c Found configuration node
891 104 common/cmd_bootm.c Got kernel subimage node offset
892 -104 common/cmd_bootm.c Kernel subimage hash verification failed
893 105 common/cmd_bootm.c Kernel subimage hash verification OK
894 -105 common/cmd_bootm.c Kernel subimage is for unsupported architecture
895 106 common/cmd_bootm.c Architecture check OK
896 -106 common/cmd_bootm.c Kernel subimage has wrong type
897 107 common/cmd_bootm.c Kernel subimage type OK
898 -107 common/cmd_bootm.c Can't get kernel subimage data/size
899 108 common/cmd_bootm.c Got kernel subimage data/size
900 -108 common/cmd_bootm.c Wrong image type (not legacy, FIT)
901 -109 common/cmd_bootm.c Can't get kernel subimage type
902 -110 common/cmd_bootm.c Can't get kernel subimage comp
903 -111 common/cmd_bootm.c Can't get kernel subimage os
904 -112 common/cmd_bootm.c Can't get kernel subimage load address
905 -113 common/cmd_bootm.c Image uncompress/copy overwrite error
907 120 common/image.c Start initial ramdisk verification
908 -120 common/image.c Ramdisk FIT image has incorrect format
909 121 common/image.c Ramdisk FIT image has correct format
910 122 common/image.c No ramdisk subimage unit name, using configuration
911 -122 common/image.c Can't get configuration for ramdisk subimage
912 123 common/image.c Ramdisk unit name specified
913 -124 common/image.c Can't get ramdisk subimage node offset
914 125 common/image.c Got ramdisk subimage node offset
915 -125 common/image.c Ramdisk subimage hash verification failed
916 126 common/image.c Ramdisk subimage hash verification OK
917 -126 common/image.c Ramdisk subimage for unsupported architecture
918 127 common/image.c Architecture check OK
919 -127 common/image.c Can't get ramdisk subimage data/size
920 128 common/image.c Got ramdisk subimage data/size
921 129 common/image.c Can't get ramdisk load address
922 -129 common/image.c Got ramdisk load address
924 -130 common/cmd_doc.c Incorrect FIT image format
925 131 common/cmd_doc.c FIT image format OK
927 -140 common/cmd_ide.c Incorrect FIT image format
928 141 common/cmd_ide.c FIT image format OK
930 -150 common/cmd_nand.c Incorrect FIT image format
931 151 common/cmd_nand.c FIT image format OK
933 config SPL_SHOW_BOOT_PROGRESS
934 bool "Show boot progress in a board-specific manner in SPL"
937 Defining this option allows to add some board-specific code (calling
938 a user-provided function show_boot_progress(int) that enables you to
939 show the system's boot progress on some display (for example, some
940 LEDs) on your board. For details see SHOW_BOOT_PROGRESS.
947 bool "Support for booting from NOR flash"
950 Enabling this will make a U-Boot binary that is capable of being
951 booted via NOR. In this case we will enable certain pinmux early
952 as the ROM only partially sets up pinmux. We also default to using
956 bool "Support for booting from NAND flash"
959 Enabling this will make a U-Boot binary that is capable of being
960 booted via NAND flash. This is not a must, some SoCs need this,
964 bool "Support for booting from ONENAND"
967 Enabling this will make a U-Boot binary that is capable of being
968 booted via ONENAND. This is not a must, some SoCs need this,
972 bool "Support for booting from QSPI flash"
974 Enabling this will make a U-Boot binary that is capable of being
975 booted via QSPI flash. This is not a must, some SoCs need this,
979 bool "Support for booting from SATA"
981 Enabling this will make a U-Boot binary that is capable of being
982 booted via SATA. This is not a must, some SoCs need this,
986 bool "Support for booting from SD/EMMC"
988 Enabling this will make a U-Boot binary that is capable of being
989 booted via SD/EMMC. This is not a must, some SoCs need this,
993 bool "Support for booting from SD/EMMC and enable QSPI"
995 Enabling this will make a U-Boot binary that is capable of being
996 booted via SD/EMMC while enabling QSPI on the platform as well. This
997 is not a must, some SoCs need this, some not.
1000 bool "Support for booting from SPI flash"
1002 Enabling this will make a U-Boot binary that is capable of being
1003 booted via SPI flash. This is not a must, some SoCs need this,
1008 menu "Autoboot options"
1014 This enables the autoboot. See doc/README.autoboot for detail.
1017 int "delay in seconds before automatically booting"
1021 Delay before automatically running bootcmd;
1022 set to 0 to autoboot with no delay, but you can stop it by key input.
1023 set to -1 to disable autoboot.
1024 set to -2 to autoboot with no delay and not check for abort
1026 If this value is >= 0 then it is also used for the default delay
1027 before starting the default entry in bootmenu. If it is < 0 then
1028 a default value of 10s is used.
1030 See doc/README.autoboot for details.
1032 config AUTOBOOT_KEYED
1033 bool "Stop autobooting via specific input key / string"
1035 This option enables stopping (aborting) of the automatic
1036 boot feature only by issuing a specific input key or
1037 string. If not enabled, any input key will abort the
1038 U-Boot automatic booting process and bring the device
1039 to the U-Boot prompt for user input.
1041 config AUTOBOOT_FLUSH_STDIN
1042 bool "Enable flushing stdin before starting to read the password"
1043 depends on AUTOBOOT_KEYED && !SANDBOX
1045 When this option is enabled stdin buffer will be flushed before
1046 starting to read the password.
1047 This can't be enabled for the sandbox as flushing stdin would
1048 break the autoboot unit tests.
1050 config AUTOBOOT_PROMPT
1051 string "Autoboot stop prompt"
1052 depends on AUTOBOOT_KEYED
1053 default "Autoboot in %d seconds\\n"
1055 This string is displayed before the boot delay selected by
1056 CONFIG_BOOTDELAY starts. If it is not defined there is no
1057 output indicating that autoboot is in progress.
1059 Note that this define is used as the (only) argument to a
1060 printf() call, so it may contain '%' format specifications,
1061 provided that it also includes, sepearated by commas exactly
1062 like in a printf statement, the required arguments. It is
1063 the responsibility of the user to select only such arguments
1064 that are valid in the given context.
1066 config AUTOBOOT_ENCRYPTION
1067 bool "Enable encryption in autoboot stopping"
1068 depends on AUTOBOOT_KEYED
1070 This option allows a string to be entered into U-Boot to stop the
1072 The behavior depends whether CONFIG_CRYPT_PW from lib is enabled
1074 In case CONFIG_CRYPT_PW is enabled, the string will be forwarded
1075 to the crypt-based functionality and be compared against the
1076 string in the environment variable 'bootstopkeycrypt'.
1077 In case CONFIG_CRYPT_PW is disabled the string itself is hashed
1078 and compared against the hash in the environment variable
1079 'bootstopkeysha256'.
1080 If it matches in either case then boot stops and
1081 a command-line prompt is presented.
1082 This provides a way to ship a secure production device which can also
1083 be accessed at the U-Boot command line.
1085 config AUTOBOOT_SHA256_FALLBACK
1086 bool "Allow fallback from crypt-hashed password to sha256"
1087 depends on AUTOBOOT_ENCRYPTION && CRYPT_PW
1089 This option adds support to fall back from crypt-hashed
1090 passwords to checking a SHA256 hashed password in case the
1091 'bootstopusesha256' environment variable is set to 'true'.
1093 config AUTOBOOT_DELAY_STR
1094 string "Delay autobooting via specific input key / string"
1095 depends on AUTOBOOT_KEYED && !AUTOBOOT_ENCRYPTION
1097 This option delays the automatic boot feature by issuing
1098 a specific input key or string. If CONFIG_AUTOBOOT_DELAY_STR
1099 or the environment variable "bootdelaykey" is specified
1100 and this string is received from console input before
1101 autoboot starts booting, U-Boot gives a command prompt. The
1102 U-Boot prompt will time out if CONFIG_BOOT_RETRY_TIME is
1103 used, otherwise it never times out.
1105 config AUTOBOOT_STOP_STR
1106 string "Stop autobooting via specific input key / string"
1107 depends on AUTOBOOT_KEYED && !AUTOBOOT_ENCRYPTION
1109 This option enables stopping (aborting) of the automatic
1110 boot feature only by issuing a specific input key or
1111 string. If CONFIG_AUTOBOOT_STOP_STR or the environment
1112 variable "bootstopkey" is specified and this string is
1113 received from console input before autoboot starts booting,
1114 U-Boot gives a command prompt. The U-Boot prompt never
1115 times out, even if CONFIG_BOOT_RETRY_TIME is used.
1117 config AUTOBOOT_KEYED_CTRLC
1118 bool "Enable Ctrl-C autoboot interruption"
1119 depends on AUTOBOOT_KEYED && !AUTOBOOT_ENCRYPTION
1121 This option allows for the boot sequence to be interrupted
1122 by ctrl-c, in addition to the "bootdelaykey" and "bootstopkey".
1123 Setting this variable provides an escape sequence from the
1124 limited "password" strings.
1126 config AUTOBOOT_NEVER_TIMEOUT
1127 bool "Make the password entry never time-out"
1128 depends on AUTOBOOT_KEYED && AUTOBOOT_ENCRYPTION && CRYPT_PW
1130 This option removes the timeout from the password entry
1131 when the user first presses the <Enter> key before entering
1132 any other character.
1134 config AUTOBOOT_STOP_STR_ENABLE
1135 bool "Enable fixed string to stop autobooting"
1136 depends on AUTOBOOT_KEYED && AUTOBOOT_ENCRYPTION
1138 This option enables the feature to add a fixed stop
1139 string that is defined at compile time.
1140 In every case it will be tried to load the stop
1141 string from the environment.
1142 In case this is enabled and there is no stop string
1143 in the environment, this will be used as default value.
1145 config AUTOBOOT_STOP_STR_CRYPT
1146 string "Stop autobooting via crypt-hashed password"
1147 depends on AUTOBOOT_STOP_STR_ENABLE && CRYPT_PW
1149 This option adds the feature to only stop the autobooting,
1150 and therefore boot into the U-Boot prompt, when the input
1151 string / password matches a values that is hashed via
1152 one of the supported crypt-style password hashing options
1153 and saved in the environment variable "bootstopkeycrypt".
1155 config AUTOBOOT_STOP_STR_SHA256
1156 string "Stop autobooting via SHA256 hashed password"
1157 depends on AUTOBOOT_STOP_STR_ENABLE
1159 This option adds the feature to only stop the autobooting,
1160 and therefore boot into the U-Boot prompt, when the input
1161 string / password matches a values that is encypted via
1162 a SHA256 hash and saved in the environment variable
1163 "bootstopkeysha256". If the value in that variable
1164 includes a ":", the portion prior to the ":" will be treated
1167 config AUTOBOOT_USE_MENUKEY
1168 bool "Allow a specify key to run a menu from the environment"
1169 depends on !AUTOBOOT_KEYED
1171 If a specific key is pressed to stop autoboot, then the commands in
1172 the environment variable 'menucmd' are executed before boot starts.
1174 config AUTOBOOT_MENUKEY
1175 int "ASCII value of boot key to show a menu"
1177 depends on AUTOBOOT_USE_MENUKEY
1179 If this key is pressed to stop autoboot, then the commands in the
1180 environment variable 'menucmd' will be executed before boot starts.
1181 For example, 33 means "!" in ASCII, so pressing ! at boot would take
1184 config AUTOBOOT_MENU_SHOW
1185 bool "Show a menu on boot"
1186 depends on CMD_BOOTMENU
1188 This enables the boot menu, controlled by environment variables
1189 defined by the board. The menu starts after running the 'preboot'
1190 environmnent variable (if enabled) and before handling the boot delay.
1191 See README.bootmenu for more details.
1193 config BOOTMENU_DISABLE_UBOOT_CONSOLE
1194 bool "Disallow bootmenu to enter the U-Boot console"
1195 depends on AUTOBOOT_MENU_SHOW
1197 If this option is enabled, user can not enter the U-Boot console from
1198 bootmenu. It increases the system security.
1201 bool "Boot retry feature"
1203 Allow for having the U-Boot command prompt time out and attempt
1204 to boot again. If the environment variable "bootretry" is found then
1205 its value is used, otherwise the retry timeout is
1206 CONFIG_BOOT_RETRY_TIME. CONFIG_BOOT_RETRY_MIN is optional and
1207 defaults to CONFIG_BOOT_RETRY_TIME. All times are in seconds.
1209 config BOOT_RETRY_TIME
1210 int "Timeout in seconds before attempting to boot again"
1211 depends on BOOT_RETRY
1213 Time in seconds before the U-Boot prompt will timeout and boot will
1216 config BOOT_RETRY_MIN
1217 int "Minimum timeout in seconds for 'bootretry'"
1218 depends on BOOT_RETRY
1219 default BOOT_RETRY_TIME
1221 The minimum time in seconds that "bootretry" can be set to.
1223 config RESET_TO_RETRY
1224 bool "Reset the board to retry autoboot"
1225 depends on BOOT_RETRY
1227 After the countdown timed out, the board will be reset to restart
1232 menu "Image support"
1234 config IMAGE_PRE_LOAD
1235 bool "Image pre-load support"
1237 Enable an image pre-load stage in the SPL.
1238 This pre-load stage allows to do some manipulation
1239 or check (for example signature check) on an image
1240 before launching it.
1242 config SPL_IMAGE_PRE_LOAD
1243 bool "Image pre-load support within SPL"
1244 depends on SPL && IMAGE_PRE_LOAD
1246 Enable an image pre-load stage in the SPL.
1247 This pre-load stage allows to do some manipulation
1248 or check (for example signature check) on an image
1249 before launching it.
1251 config IMAGE_PRE_LOAD_SIG
1252 bool "Image pre-load signature support"
1253 depends on IMAGE_PRE_LOAD
1254 select FIT_SIGNATURE
1256 select RSA_VERIFY_WITH_PKEY
1258 Enable signature check support in the pre-load stage.
1259 For this feature a very simple header is added before
1260 the image with few fields:
1264 All other information (header size, type of signature,
1265 ...) are provided in the node /image/pre-load/sig of
1268 config SPL_IMAGE_PRE_LOAD_SIG
1269 bool "Image pre-load signature support witin SPL"
1270 depends on SPL_IMAGE_PRE_LOAD && IMAGE_PRE_LOAD_SIG
1271 select SPL_FIT_SIGNATURE
1273 select SPL_RSA_VERIFY_WITH_PKEY
1275 Enable signature check support in the pre-load stage in the SPL.
1276 For this feature a very simple header is added before
1277 the image with few fields:
1281 All other information (header size, type of signature,
1282 ...) are provided in the node /image/pre-load/sig of
1288 bool "Enable boot arguments"
1290 Provide boot arguments to bootm command. Boot arguments are specified
1291 in CONFIG_BOOTARGS option. Enable this option to be able to specify
1292 CONFIG_BOOTARGS string. If this option is disabled, CONFIG_BOOTARGS
1293 will be undefined and won't take any space in U-Boot image.
1296 string "Boot arguments"
1297 depends on USE_BOOTARGS && !USE_DEFAULT_ENV_FILE
1299 This can be used to pass arguments to the bootm command. The value of
1300 CONFIG_BOOTARGS goes into the environment value "bootargs". Note that
1301 this value will also override the "chosen" node in FDT blob.
1303 config BOOTARGS_SUBST
1304 bool "Support substituting strings in boot arguments"
1306 This allows substituting string values in the boot arguments. These
1307 are applied after the commandline has been built.
1309 One use for this is to insert the root-disk UUID into the command
1310 line where bootargs contains "root=${uuid}"
1312 setenv bootargs "console= root=${uuid}"
1313 # Set the 'uuid' environment variable
1314 part uuid mmc 2:2 uuid
1316 # Command-line substitution will put the real uuid into the
1317 # kernel command line
1320 config USE_BOOTCOMMAND
1321 bool "Enable a default value for bootcmd"
1323 Provide a default value for the bootcmd entry in the environment. If
1324 autoboot is enabled this is what will be run automatically. Enable
1325 this option to be able to specify CONFIG_BOOTCOMMAND as a string. If
1326 this option is disabled, CONFIG_BOOTCOMMAND will be undefined and
1327 won't take any space in U-Boot image.
1330 string "bootcmd value"
1331 depends on USE_BOOTCOMMAND && !USE_DEFAULT_ENV_FILE
1332 default "bootflow scan -lb" if BOOTSTD_BOOTCOMMAND && CMD_BOOTFLOW_FULL
1333 default "bootflow scan" if BOOTSTD_BOOTCOMMAND && !CMD_BOOTFLOW_FULL
1334 default "run distro_bootcmd" if !BOOTSTD_BOOTCOMMAND && DISTRO_DEFAULTS
1336 This is the string of commands that will be used as bootcmd and if
1337 AUTOBOOT is set, automatically run.
1340 bool "Enable preboot"
1342 When this option is enabled, the existence of the environment
1343 variable "preboot" will be checked immediately before starting the
1344 CONFIG_BOOTDELAY countdown and/or running the auto-boot command resp.
1345 entering interactive mode.
1347 This feature is especially useful when "preboot" is automatically
1348 generated or modified. For example, the boot code can modify the
1349 "preboot" when a user holds down a certain combination of keys.
1352 string "preboot default value"
1353 depends on USE_PREBOOT && !USE_DEFAULT_ENV_FILE
1354 default "usb start" if USB_KEYBOARD
1357 This is the default of "preboot" environment variable.
1359 config DEFAULT_FDT_FILE
1360 string "Default fdt file"
1362 This option is used to set the default fdt file to boot OS.
1364 config SAVE_PREV_BL_FDT_ADDR
1366 bool "Saves fdt address, passed by the previous bootloader, to env var"
1368 When u-boot is used as a chain-loaded bootloader (replacing OS kernel),
1369 enable this option to save fdt address, passed by the
1370 previous bootloader for future use.
1371 Address is saved to `prevbl_fdt_addr` environment variable.
1373 If no fdt was provided by previous bootloader, no env variables
1376 config SAVE_PREV_BL_INITRAMFS_START_ADDR
1378 bool "Saves initramfs address, passed by the previous bootloader, to env var"
1380 When u-boot is used as a chain-loaded bootloader(replacing OS kernel),
1381 enable this option to save initramfs address, passed by the
1382 previous bootloader for future use.
1383 Address is saved to `prevbl_initrd_start_addr` environment variable.
1385 If no initramfs was provided by previous bootloader, no env variables