1 menu "Command line interface"
4 bool "Support U-Boot commands"
7 Enable U-Boot's command-line functions. This provides a means
8 to enter commands into U-Boot for a wide variety of purposes. It
9 also allows scripts (containing commands) to be executed.
10 Various commands and command categorys can be indivdually enabled.
11 Depending on the number of commands enabled, this can add
12 substantially to the size of U-Boot.
18 This option enables the "hush" shell (from Busybox) as command line
19 interpreter, thus enabling powerful command line syntax like
20 if...then...else...fi conditionals or `&&' and '||'
21 constructs ("shell scripts").
23 If disabled, you get the old, much simpler behaviour with a somewhat
24 smaller memory footprint.
26 config CMDLINE_EDITING
27 bool "Enable command line editing"
31 Enable editing and History functions for interactive command line
35 bool "Enable auto complete using TAB"
39 Enable auto completion of commands using TAB.
42 bool "Enable long help messages"
46 Defined when you want long help messages included
47 Do not set this option when short of memory.
51 default "Zynq> " if ARCH_ZYNQ
52 default "ZynqMP> " if ARCH_ZYNQMP
55 This string is displayed in the command line to the left of the
58 config SYS_PROMPT_HUSH_PS2
59 string "Hush shell secondary prompt"
60 depends on HUSH_PARSER
63 This defines the secondary prompt string, which is
64 printed when the command interpreter needs more input
65 to complete a command. Usually "> ".
68 bool "Command execution tracer"
72 This option enables the possiblity to print all commands before
73 executing them and after all variables are evaluated (similar
74 to Bash's xtrace/'set -x' feature).
75 To enable the tracer a variable "xtrace" needs to be defined in
90 List and dump ACPI tables. ACPI (Advanced Configuration and Power
91 Interface) is used mostly on x86 for providing information to the
92 Operating System about devices in the system. The tables are set up
93 by the firmware, typically U-Boot but possibly an earlier firmware
94 module, if U-Boot is chain-loaded from something else. ACPI tables
95 can also include code, to perform hardware-specific tasks required
96 by the Operating Systems. This allows some amount of separation
97 between the firmware and OS, and is particularly useful when you
98 want to make hardware changes without the OS needing to be adjusted.
105 List non-identity virtual-physical memory mappings for 32-bit CPUs.
118 Print ".config" contents.
120 If this option is enabled, the ".config" file contents are embedded
121 in the U-Boot image and can be printed on the console by the "config"
122 command. This provides information of which options are enabled on
129 Print console devices and information.
135 Print information about available CPUs. This normally shows the
136 number of CPUs, type (e.g. manufacturer, architecture, product or
137 internal name) and clock frequency. Other information may be
138 available depending on the CPU driver.
144 Print GPL license text
149 Provides access to the Intel Power-Management Controller (PMC) so
150 that its state can be examined. This does not currently support
151 changing the state but it is still useful for debugging and seeing
160 config CMD_TLV_EEPROM
162 depends on I2C_EEPROM
164 Display and program the system EEPROM data block in ONIE Tlvinfo
165 format. TLV stands for Type-Length-Value.
167 config SPL_CMD_TLV_EEPROM
168 bool "tlv_eeprom for SPL"
169 depends on SPL_I2C_EEPROM
170 select SPL_DRIVERS_MISC
172 Read system EEPROM data block in ONIE Tlvinfo format from SPL.
176 depends on RISCV_SMODE && SBI_V02
178 Display information about the SBI implementation.
188 Run the command stored in the environment "bootcmd", i.e.
189 "bootd" does the same thing as "run bootcmd".
195 Boot an application image from the memory.
197 config CMD_BOOTM_PRE_LOAD
198 bool "enable pre-load on bootm"
200 depends on IMAGE_PRE_LOAD
203 Enable support of stage pre-load for the bootm command.
204 This stage allow to check or modify the image provided
205 to the bootm command.
208 bool "Support booting UEFI FIT images"
209 depends on CMD_BOOTEFI && CMD_BOOTM && FIT
212 Support booting UEFI FIT images via the bootm command.
217 Boot the Linux zImage
221 depends on ARM64 || RISCV
224 Boot an AArch64 Linux Kernel image from memory.
227 bool "Support booting Linux OS images"
228 depends on CMD_BOOTM || CMD_BOOTZ || CMD_BOOTI
231 Support booting the Linux kernel directly via a command such as bootm
235 bool "Support booting NetBSD (non-EFI) loader images"
239 Support booting NetBSD via the bootm command.
241 config BOOTM_OPENRTOS
242 bool "Support booting OPENRTOS / FreeRTOS images"
245 Support booting OPENRTOS / FreeRTOS via the bootm command.
248 bool "Support booting Enea OSE images"
249 depends on (ARM && (ARM64 || CPU_V7A || CPU_V7R) || SANDBOX || PPC || X86)
252 Support booting Enea OSE images via the bootm command.
255 bool "Support booting Plan9 OS images"
259 Support booting Plan9 images via the bootm command.
262 bool "Support booting RTEMS OS images"
266 Support booting RTEMS images via the bootm command.
269 bool "Support booting VxWorks OS images"
273 Support booting VxWorks images via the bootm command.
277 depends on EFI_LOADER
280 Boot an EFI image from memory.
282 config CMD_BOOTEFI_HELLO_COMPILE
283 bool "Compile a standard EFI hello world binary for testing"
284 depends on CMD_BOOTEFI && !CPU_V7M
287 This compiles a standard EFI hello world application with U-Boot so
288 that it can be used with the test/py testing framework. This is useful
289 for testing that EFI is working at a basic level, and for bringing
290 up EFI support on a new architecture.
292 No additional space will be required in the resulting U-Boot binary
293 when this option is enabled.
295 config CMD_BOOTEFI_HELLO
296 bool "Allow booting a standard EFI hello world for testing"
297 depends on CMD_BOOTEFI_HELLO_COMPILE
298 default y if CMD_BOOTEFI_SELFTEST
300 This adds a standard EFI hello world application to U-Boot so that
301 it can be used with the 'bootefi hello' command. This is useful
302 for testing that EFI is working at a basic level, and for bringing
303 up EFI support on a new architecture.
305 source lib/efi_selftest/Kconfig
311 Add an ANSI terminal boot menu command.
316 Android DTB/DTBO image manipulation commands. Read dtb/dtbo files from
317 image into RAM, dump image structure information, etc. Those dtb/dtbo
318 files should be merged in one dtb further, which needs to be passed to
319 the kernel, as part of a boot process.
323 depends on ANDROID_BOOT_IMAGE
325 Android Boot Image manipulation commands. Allows one to extract
326 images contained in boot.img, like kernel, ramdisk, dtb, etc, and
327 obtain corresponding meta-information from boot.img.
329 See doc/android/boot-image.rst for details.
332 bool "bootelf, bootvx"
336 Boot an ELF/vxWorks image from the memory.
339 bool "Flattened Device Tree utility commands"
343 Do FDT related setup before booting into the Operating System.
345 config SUPPORT_EXTENSION_SCAN
349 bool "Extension board management command"
351 depends on SUPPORT_EXTENSION_SCAN
353 Enables the "extension" command, which allows to detect
354 extension boards connected to the system, and apply
355 corresponding Device Tree overlays.
361 Start an application at a given address.
367 Run the command in the given environment variable.
373 Print header information for application image.
378 List all images found in flash
384 Extract a part of a multi-image.
387 bool "spl export - Export boot information for Falcon boot"
390 Falcon mode allows booting directly from SPL into an Operating
391 System such as Linux, thus skipping U-Boot proper. See
392 doc/README.falcon for full information about how to use this
395 config CMD_SPL_NAND_OFS
396 hex "Offset of OS args or dtb for Falcon-mode NAND boot"
397 depends on CMD_SPL && (TPL_NAND_SUPPORT || SPL_NAND_SUPPORT)
400 This provides the offset of the command line arguments for Linux
401 when booting from NAND in Falcon mode. See doc/README.falcon
402 for full information about how to use this option (and also see
403 board/gateworks/gw_ventana/README for an example).
405 config CMD_SPL_NOR_OFS
406 hex "Offset of OS args or dtb for Falcon-mode NOR boot"
407 depends on CMD_SPL && SPL_NOR_SUPPORT
410 This provides the offset of the command line arguments or dtb for
411 Linux when booting from NOR in Falcon mode.
413 config CMD_SPL_WRITE_SIZE
414 hex "Size of argument area"
418 This provides the size of the command-line argument area in NAND
419 flash used by Falcon-mode boot. See the documentation until CMD_SPL
422 config CMD_THOR_DOWNLOAD
423 bool "thor - TIZEN 'thor' download"
426 Implements the 'thor' download protocol. This is a way of
427 downloading a software update over USB from an attached host.
428 There is no documentation about this within the U-Boot source code
429 but you should be able to find something on the interwebs.
432 bool "zboot - x86 boot command"
434 With x86 machines it is common to boot a bzImage file which
435 contains both a kernel and a setup.bin file. The latter includes
436 configuration information from the dark ages which x86 boards still
437 need to pick things out of.
439 Consider using FIT in preference to this since it supports directly
440 booting both 32- and 64-bit kernels, as well as secure boot.
441 Documentation is available in doc/uImage.FIT/x86-fit-boot.txt
445 menu "Environment commands"
448 bool "ask for env variable"
450 Ask for environment variable
468 Edit environment variable.
473 Allow for searching environment variables
479 Save all environment variables into the compiled-in persistent
484 depends on CMD_SAVEENV
486 Erase environment variables from the compiled-in persistent
489 config CMD_ENV_EXISTS
493 Check if a variable is defined in the environment for use in
496 config CMD_ENV_CALLBACK
497 bool "env callbacks - print callbacks and their associated variables"
499 Some environment variable have callbacks defined by
500 U_BOOT_ENV_CALLBACK. These are called when the variable changes.
501 For example changing "baudrate" adjust the serial baud rate. This
502 command lists the currently defined callbacks.
505 bool "env flags -print variables that have non-default flags"
507 Some environment variables have special flags that control their
508 behaviour. For example, serial# can only be written once and cannot
509 be deleted. This command shows the variables that have special
512 config CMD_NVEDIT_EFI
513 bool "env [set|print] -e - set/print UEFI variables"
514 depends on EFI_LOADER
517 UEFI variables are encoded as some form of U-Boot variables.
518 If enabled, we are allowed to set/print UEFI variables using
519 "env" command with "-e" option without knowing details.
521 config CMD_NVEDIT_INDIRECT
522 bool "env indirect - Sets environment value from another"
524 config CMD_NVEDIT_INFO
525 bool "env info - print or evaluate environment information"
527 Print environment information:
528 - env_valid : is environment valid
529 - env_ready : is environment imported into hash table
530 - env_use_default : is default environment used
532 This command can be optionally used for evaluation in scripts:
533 [-d] : evaluate whether default environment is used
534 [-p] : evaluate whether environment can be persisted
536 The result of multiple evaluations will be combined with AND.
538 config CMD_NVEDIT_LOAD
541 Load all environment variables from the compiled-in persistent
544 config CMD_NVEDIT_SELECT
547 Select the compiled-in persistent storage of environment variables.
551 menu "Memory commands"
556 Compute binary operations (xor, or, and) of byte arrays of arbitrary
557 size from memory and store the result in memory or the environment.
561 default y if BLOBLIST
563 Show information about the bloblist, a collection of binary blobs
564 held in memory that persist between SPL and U-Boot. In the case of
565 x86 devices the bloblist can be used to hold ACPI tables so that they
566 remain available in memory.
579 Add -v option to verify data against a crc32 checksum.
582 bool "eeprom - EEPROM subsystem"
584 (deprecated, needs conversion to driver model)
585 Provides commands to read and write EEPROM (Electrically Erasable
586 Programmable Read Only Memory) chips that are connected over an
589 config CMD_EEPROM_LAYOUT
590 bool "Enable layout-aware eeprom commands"
591 depends on CMD_EEPROM
593 (deprecated, needs conversion to driver model)
594 When enabled, additional eeprom sub-commands become available.
596 eeprom print - prints the contents of the eeprom in a human-readable
597 way (eeprom layout fields, and data formatted to be fit for human
600 eeprom update - allows user to update eeprom fields by specifying
601 the field name, and providing the new data in a human readable format
602 (same format as displayed by the eeprom print command).
604 Both commands can either auto detect the layout, or be told which
608 __weak int parse_layout_version(char *str)
609 - override to provide your own layout name parsing
610 __weak void __eeprom_layout_assign(struct eeprom_layout *layout,
612 - override to setup the layout metadata based on the version
613 __weak int eeprom_layout_detect(unsigned char *data)
614 - override to provide your own algorithm for detecting layout
617 - contains various printing and updating functions for common
618 types of eeprom fields. Can be used for defining
621 config EEPROM_LAYOUT_HELP_STRING
622 string "Tells user what layout names are supported"
623 depends on CMD_EEPROM_LAYOUT
624 default "<not defined>"
626 Help printed with the LAYOUT VERSIONS part of the 'eeprom'
629 config SYS_I2C_EEPROM_BUS
630 int "I2C bus of the EEPROM device."
631 depends on CMD_EEPROM
634 config SYS_I2C_EEPROM_ADDR_LEN
635 int "Length in bytes of the EEPROM memory array address"
636 depends on CMD_EEPROM || ID_EEPROM
640 Note: This is NOT the chip address length!
642 config SYS_EEPROM_SIZE
643 depends on CMD_EEPROM
644 int "Size in bytes of the EEPROM device"
647 config SYS_EEPROM_PAGE_WRITE_BITS
648 int "Number of bits used to address bytes in a single page"
649 depends on CMD_EEPROM
652 The EEPROM page size is 2^SYS_EEPROM_PAGE_WRITE_BITS.
653 A 64 byte page, for example would require six bits.
655 config SYS_EEPROM_PAGE_WRITE_DELAY_MS
656 int "Number of milliseconds to delay between page writes"
657 depends on CMD_EEPROM || CMD_I2C
663 Infinite write loop on address range
669 Compute MD5 checksum.
673 depends on CMD_MD5SUM
675 Add -v option to verify data against an MD5 checksum.
680 Display memory information.
683 bool "md, mm, nm, mw, cp, cmp, base, loop"
688 mm - memory modify (auto-incrementing address)
689 nm - memory modify (constant address)
690 mw - memory write (fill)
693 base - print or set address offset
694 loop - initialize loop on address range
696 config CMD_MEM_SEARCH
697 bool "ms - Memory search"
699 Memory-search command
701 This allows searching through a region of memory looking for hex
702 data (byte, 16-bit word, 32-bit long, also 64-bit on machines that
703 support it). It is also possible to search for a string. The
704 command accepts a memory range and a list of values to search for.
705 The values need to appear in memory in the same order they are given
706 in the command. At most 10 matches can be returned at a time, but
707 pressing return will show the next 10 matches. Environment variables
708 are set for use with scripting (memmatches, memaddr, mempos).
711 bool "Enable cyclic md/mw commands"
712 depends on CMD_MEMORY
714 Add the "mdc" and "mwc" memory commands. These are cyclic
719 This command will print 4 bytes (10,11,12,13) each 500 ms.
721 => mwc.l 100 12345678 10
722 This command will write 12345678 to address 100 all 10 ms.
727 depends on CMD_MEMORY && (LIB_RAND || LIB_HW_RAND)
729 random - fill memory with random data
734 Simple RAM read/write test.
738 config SYS_ALT_MEMTEST
739 bool "Alternative test"
741 Use a more complete alternative memory test.
745 config SYS_ALT_MEMTEST_BITFLIP
749 The alternative memory test includes bitflip test since 2020.07.
750 The bitflip test significantly increases the overall test time.
751 Bitflip test can optionally be disabled here.
755 config SYS_MEMTEST_START
756 hex "default start address for mtest"
759 This is the default start address for mtest for simple read/write
760 test. If no arguments are given to mtest, default address is used
763 config SYS_MEMTEST_END
764 hex "default end address for mtest"
767 This is the default end address for mtest for simple read/write
768 test. If no arguments are given to mtest, default address is used
777 Compute SHA1 checksum.
779 config SHA1SUM_VERIFY
781 depends on CMD_SHA1SUM
783 Add -v option to verify data against a SHA1 checksum.
786 bool "strings - display strings in memory"
788 This works similarly to the Unix 'strings' command except that it
789 works with a memory range. String of printable characters found
790 within the range are displayed. The minimum number of characters
791 for a sequence to be considered a string can be provided.
795 menu "Compression commands"
799 default y if CMD_BOOTI
802 Support decompressing an LZMA (Lempel-Ziv-Markov chain algorithm)
807 default y if CMD_BOOTI
810 Support decompressing an LZ4 image from memory region.
814 default y if CMD_BOOTI
817 Uncompress a zip-compressed memory region.
821 select GZIP_COMPRESSED
823 Compress a memory region with zlib deflate method.
827 menu "Device access commands"
830 #depends on FLASH_CFI_DRIVER
833 ARM Ltd reference designs flash partition access
836 bool "adc - Access Analog to Digital Converters info and data"
838 depends on DM_REGULATOR
840 Shows ADC device info and permit printing one-shot analog converted
841 data from a named Analog to Digital Converter.
846 depends on PARTITIONS
848 Read/modify/write the fields of Bootloader Control Block, usually
849 stored on the flash "misc" partition with its structure defined in:
850 https://android.googlesource.com/platform/bootable/recovery/+/master/
851 bootloader_message/include/bootloader_message/bootloader_message.h
853 Some real-life use-cases include (but are not limited to):
854 - Determine the "boot reason" (and act accordingly):
855 https://source.android.com/devices/bootloader/boot-reason
856 - Get/pass a list of commands from/to recovery:
857 https://android.googlesource.com/platform/bootable/recovery
858 - Inspect/dump the contents of the BCB fields
861 bool "bind/unbind - Bind or unbind a device to/from a driver"
864 Bind or unbind a device to/from a driver from the command line.
865 This is useful in situations where a device may be handled by several
866 drivers. For example, this can be used to bind a UDC to the usb ether
867 gadget driver from the command line.
870 bool "clk - Show clock frequencies"
873 Shows clock frequences by calling a sock_clk_dump() hook function.
874 This is depreated in favour of using the CLK uclass and accessing
875 clock values from associated drivers. However currently no command
879 bool "demo - Demonstration commands for driver model"
882 Provides a 'demo' command which can be used to play around with
883 driver model. To use this properly you will need to enable one or
884 both of the demo devices (DM_DEMO_SHAPE and DM_DEMO_SIMPLE).
885 Otherwise you will always get an empty list of devices. The demo
886 devices are defined in the sandbox device tree, so the easiest
887 option is to use sandbox and pass the -d point to sandbox's
894 Enables the command "dfu" which is used to have U-Boot create a DFU
895 class device via USB. This command requires that the "dfu_alt_info"
896 environment variable be set and define the alt settings to expose to
900 bool "dm - Access to driver model information"
903 Provides access to driver model data structures and information,
904 such as a list of devices, list of uclasses and the state of each
905 device (e.g. activated). This is not required for operation, but
906 can be useful to see the state of driver model for debugging or
910 bool "fastboot - Android fastboot support"
913 This enables the command "fastboot" which enables the Android
914 fastboot mode for the platform. Fastboot is a protocol for
915 downloading images, flashing and device control used on
916 Android devices. Fastboot requires either the network stack
917 enabled or support for acting as a USB device.
919 See doc/android/fastboot.rst for more information.
922 bool "flinfo, erase, protect"
924 depends on MTD || FLASH_CFI_DRIVER || MTD_NOR_FLASH
927 flinfo - print FLASH memory information
929 protect - enable or disable FLASH write protection
938 config CMD_FPGA_LOADBP
939 bool "fpga loadbp - load partial bitstream (Xilinx only)"
942 Supports loading an FPGA device from a bitstream buffer containing
945 config CMD_FPGA_LOADFS
946 bool "fpga loadfs - load bitstream from FAT filesystem (Xilinx only)"
949 Supports loading an FPGA device from a FAT filesystem.
951 config CMD_FPGA_LOADMK
952 bool "fpga loadmk - load bitstream from image"
955 Supports loading an FPGA device from a image generated by mkimage.
957 config CMD_FPGA_LOADP
958 bool "fpga loadp - load partial bitstream"
961 Supports loading an FPGA device from a bitstream buffer containing
964 config CMD_FPGA_LOAD_SECURE
965 bool "fpga loads - loads secure bitstreams (Xilinx only)"
968 Enables the fpga loads command which is used to load secure
969 (authenticated or encrypted or both) bitstreams on to FPGA.
972 bool "fpgad - dump FPGA registers"
974 (legacy, needs conversion to driver model)
975 Provides a way to dump FPGA registers by calling the board-specific
976 fpga_get_reg() function. This functions similarly to the 'md'
980 bool "fuse - support for the fuse subssystem"
982 (deprecated - needs conversion to driver model)
983 This allows reading, sensing, programming or overriding fuses
984 which control the behaviour of the device. The command uses the
996 Control PWM channels, this allows invert/config/enable/disable PWM channels.
999 bool "GPT (GUID Partition Table) command"
1000 select EFI_PARTITION
1001 select HAVE_BLOCK_DEVICE
1002 select PARTITION_UUIDS
1005 Enable the 'gpt' command to ready and write GPT style partition
1009 bool "GPT Random UUID generation"
1012 Enable the generation of partitions with random UUIDs if none
1015 config CMD_GPT_RENAME
1016 bool "GPT partition renaming commands"
1019 Enables the 'gpt' command to interchange names on two GPT
1020 partitions via the 'gpt swap' command or to rename single
1021 partitions via the 'rename' command.
1024 bool "ide - Support for IDE drivers"
1027 Provides an 'ide' command which allows accessing the IDE drive,
1028 resetting the IDE interface, printing the partition table and
1029 geting device info. It also enables the 'diskboot' command which
1030 permits booting from an IDE drive.
1033 bool "io - Support for performing I/O accesses"
1035 Provides an 'iod' command to display I/O space and an 'iow' command
1036 to write values to the I/O space. This can be useful for manually
1037 checking the state of devices during boot when debugging device
1041 bool "iotrace - Support for tracing I/O activity"
1043 Provides an 'iotrace' command which supports recording I/O reads and
1044 writes in a trace buffer in memory . It also maintains a checksum
1045 of the trace records (even if space is exhausted) so that the
1046 sequence of I/O accesses can be verified.
1048 When debugging drivers it is useful to see what I/O accesses were
1049 done and in what order.
1051 Even if the individual accesses are of little interest it can be
1052 useful to verify that the access pattern is consistent each time
1053 an operation is performed. In this case a checksum can be used to
1054 characterise the operation of a driver. The checksum can be compared
1055 across different runs of the operation to verify that the driver is
1058 In particular, when performing major refactoring of the driver, where
1059 the access pattern should not change, the checksum provides assurance
1060 that the refactoring work has not broken the driver.
1062 This works by sneaking into the io.h heder for an architecture and
1063 redirecting I/O accesses through iotrace's tracing mechanism.
1065 For now no commands are provided to examine the trace buffer. The
1066 format is fairly simple, so 'md' is a reasonable substitute.
1068 Note: The checksum feature is only useful for I/O regions where the
1069 contents do not change outside of software control. Where this is not
1070 suitable you can fall back to manually comparing the addresses. It
1071 might be useful to enhance tracing to only checksum the accesses and
1072 not the data read/written.
1082 bool "w1 - Support for Dallas 1-Wire protocol"
1084 Dallas 1-wire protocol support
1090 Load a binary file over serial line.
1096 Load an S-Record file over serial line
1100 bool "lsblk - list block drivers and devices"
1102 Print list of available block device drivers, and for each, the list
1103 of known block devices.
1106 bool "MBR (Master Boot Record) command"
1107 select DOS_PARTITION
1108 select HAVE_BLOCK_DEVICE
1110 Enable the 'mbr' command to ready and write MBR (Master Boot Record)
1111 style partition tables.
1117 Enable the command "misc" for accessing miscellaneous devices with
1118 a MISC uclass driver. The command provides listing all MISC devices
1119 as well as read and write functionalities via their drivers.
1125 MMC memory mapped support.
1129 config CMD_BKOPS_ENABLE
1130 bool "mmc bkops enable"
1133 Enable command for setting manual background operations handshake
1134 on a eMMC device. The feature is optionally available on eMMC devices
1135 conforming to standard >= 4.41.
1138 bool "Enable support for RPMB in the mmc command"
1139 depends on SUPPORT_EMMC_RPMB
1141 Enable the commands for reading, writing and programming the
1142 key for the Replay Protection Memory Block partition in eMMC.
1144 config CMD_MMC_SWRITE
1146 depends on MMC_WRITE
1149 Enable support for the "mmc swrite" command to write Android sparse
1158 Enable storage cloning over block devices, useful for
1159 initial flashing by external block device without network
1162 config CMD_OPTEE_RPMB
1163 bool "Enable read/write support on RPMB via OPTEE"
1164 depends on SUPPORT_EMMC_RPMB && OPTEE
1166 Enable the commands for reading, writing persistent named values
1167 in the Replay Protection Memory Block partition in eMMC by
1168 using Persistent Objects in OPTEE
1173 select MTD_PARTITIONS
1175 MTD commands support.
1179 depends on MULTIPLEXER
1181 List, select, and deselect mux controllers on the fly.
1185 default y if NAND_SUNXI
1186 depends on MTD_RAW_NAND
1191 config CMD_NAND_TRIMFFS
1192 bool "nand write.trimffs"
1193 default y if ARCH_SUNXI
1195 Allows one to skip empty pages when flashing something on a NAND.
1197 config CMD_NAND_LOCK_UNLOCK
1198 bool "nand lock/unlock"
1200 NAND locking support.
1202 config CMD_NAND_TORTURE
1205 NAND torture support.
1214 NVM Express device support
1217 bool "onenand - access to onenand device"
1220 OneNAND is a brand of NAND ('Not AND' gate) flash which provides
1221 various useful features. This command allows reading, writing,
1222 and erasing blocks. It allso provides a way to show and change
1223 bad blocks, and test the device.
1228 Enable the 'osd' command which allows to query information from and
1229 write text data to a on-screen display (OSD) device; a virtual device
1230 associated with a display capable of displaying a text overlay on the
1231 display it's associated with..
1235 select HAVE_BLOCK_DEVICE
1236 select PARTITION_UUIDS
1238 Read and display information about the partition table on
1242 bool "pci - Access PCI devices"
1244 Provide access to PCI (Peripheral Interconnect Bus), a type of bus
1245 used on some devices to allow the CPU to communicate with its
1246 peripherals. Sub-commands allow bus enumeration, displaying and
1247 changing configuration space and a few other features.
1250 bool "pinmux - show pins muxing"
1252 default y if PINCTRL
1254 Parse all available pin-controllers and show pins muxing. This
1255 is useful for debug purpoer to check the pin muxing and to know if
1256 a pin is configured as a GPIO or as an alternate function.
1261 Poweroff/Shutdown the system
1264 bool "read - Read binary data from a partition"
1266 Provides low-level access to the data in a partition.
1268 config CMD_REMOTEPROC
1270 depends on REMOTEPROC
1272 Support for Remote Processor control
1275 bool "sata - Access SATA subsystem"
1278 SATA (Serial Advanced Technology Attachment) is a serial bus
1279 standard for connecting to hard drives and other storage devices.
1280 This command provides information about attached devices and allows
1281 reading, writing and other operations.
1283 SATA replaces PATA (originally just ATA), which stands for Parallel AT
1284 Attachment, where AT refers to an IBM AT (Advanced Technology)
1285 computer released in 1984.
1288 bool "saves - Save a file over serial in S-Record format"
1290 Provides a way to save a binary file using the Motorola S-Record
1291 format over the serial line.
1294 bool "scsi - Access to SCSI devices"
1297 This provides a 'scsi' command which provides access to SCSI (Small
1298 Computer System Interface) devices. The command provides a way to
1299 scan the bus, reset the bus, read and write data and get information
1303 bool "sdram - Print SDRAM configuration information"
1305 Provides information about attached SDRAM. This assumed that the
1306 SDRAM has an EEPROM with information that can be read using the
1307 I2C bus. This is only available on some boards.
1311 depends on DM_SPI_FLASH || SPI_FLASH
1312 default y if DM_SPI_FLASH
1317 bool "sf test - Allow testing of SPI flash"
1320 Provides a way to test that SPI flash is working correctly. The
1321 test is destructive, in that an area of SPI flash must be provided
1322 for the test to use. Performance information is also provided,
1323 measuring the performance of reading, writing and erasing in
1324 Mbps (Million Bits Per Second). This value should approximately
1325 equal the SPI bus speed for a single-bit-wide SPI bus, assuming
1326 everything is working properly.
1329 bool "sspi - Command to access spi device"
1332 SPI utility command.
1334 config DEFAULT_SPI_BUS
1335 int "default spi bus used by sspi command"
1339 config DEFAULT_SPI_MODE
1340 hex "default spi mode used by sspi command (see include/spi.h)"
1345 bool "tsi148 - Command to access tsi148 device"
1347 This provides various sub-commands to initialise and configure the
1348 Turndra tsi148 device. See the command help for full details.
1351 bool "Enable UFS - Universal Flash Subsystem commands"
1354 "This provides commands to initialise and configure universal flash
1358 bool "universe - Command to set up the Turndra Universe controller"
1360 This allows setting up the VMEbus provided by this controller.
1361 See the command help for full details.
1366 select HAVE_BLOCK_DEVICE
1372 select USB_FUNCTION_SDP
1374 Enables the command "sdp" which is used to have U-Boot emulating the
1375 Serial Download Protocol (SDP) via USB.
1379 depends on USB_FUNCTION_ROCKUSB
1381 Rockusb protocol is widely used by Rockchip SoC based devices. It can
1382 read/write info, image to/from devices. This enable rockusb command
1383 support to communication with rockusb device. for more detail about
1384 this command, please read doc/README.rockusb.
1386 config CMD_USB_MASS_STORAGE
1387 bool "UMS usb mass storage"
1388 depends on USB_GADGET_DOWNLOAD
1389 select USB_FUNCTION_MASS_STORAGE
1390 depends on BLK && USB_GADGET
1392 Enables the command "ums" and the USB mass storage support to the
1393 export a block device: U-Boot, the USB device, acts as a simple
1394 external hard drive plugged on the host USB port.
1397 bool "Xen para-virtualized block device"
1401 Xen para-virtualized block device support
1406 depends on HAVE_BLOCK_DEVICE
1409 VirtIO block device support
1415 This provides commands to control the watchdog timer devices.
1421 Enable the command "axi" for accessing AXI (Advanced eXtensible
1422 Interface) busses, a on-chip interconnect specification for managing
1423 functional blocks in SoC designs, which is also often used in designs
1424 involving FPGAs (e.g. communication with IP cores in Xilinx FPGAs).
1428 menu "Shell scripting commands"
1434 Echo args to console
1440 Return true/false on integer compare.
1446 Run script from memory
1452 Evaluate boolean and math expressions and store the result in an env
1454 Also supports loading the value at a memory location into a variable.
1455 If CONFIG_REGEX is enabled, setexpr also supports a gsub function.
1457 config CMD_SETEXPR_FMT
1459 depends on CMD_SETEXPR
1461 Evaluate format string expression and store result in an environment
1466 menu "Android support commands"
1468 config CMD_AB_SELECT
1470 depends on ANDROID_AB
1472 On Android devices with more than one boot slot (multiple copies of
1473 the kernel and system images) this provides a command to select which
1474 slot should be used to boot from and register the boot attempt. This
1475 is used by the new A/B update model where one slot is updated in the
1476 background while running from the other slot.
1483 bool "Network commands"
1493 bootp - boot image via network using BOOTP/TFTP protocol
1497 depends on CMD_BOOTP
1499 Boot image via network using DHCP/TFTP protocol
1501 config BOOTP_MAY_FAIL
1502 bool "Allow for the BOOTP/DHCP server to not be found"
1503 depends on CMD_BOOTP
1505 If the DHCP server is not found after the configured retry count, the
1506 call will fail instead of starting over. This can be used to fail
1507 over to Link-local IP address configuration if the DHCP server is not
1510 config BOOTP_BOOTPATH
1511 bool "Request & store 'rootpath' from BOOTP/DHCP server"
1513 depends on CMD_BOOTP
1515 Even though the config is called BOOTP_BOOTPATH, it stores the
1516 path in the variable 'rootpath'.
1518 config BOOTP_VENDOREX
1519 bool "Support vendor extensions from BOOTP/DHCP server"
1520 depends on CMD_BOOTP
1522 config BOOTP_BOOTFILESIZE
1523 bool "Request & store 'bootfilesize' from BOOTP/DHCP server"
1524 depends on CMD_BOOTP
1527 bool "Request & store 'dnsip' from BOOTP/DHCP server"
1529 depends on CMD_BOOTP
1531 The primary DNS server is stored as 'dnsip'. If two servers are
1532 returned, you must set BOOTP_DNS2 to store that second server IP
1536 bool "Store 'dnsip2' from BOOTP/DHCP server"
1537 depends on BOOTP_DNS
1539 If a DHCP client requests the DNS server IP from a DHCP server,
1540 it is possible that more than one DNS serverip is offered to the
1541 client. If CONFIG_BOOTP_DNS2 is enabled, the secondary DNS
1542 server IP will be stored in the additional environment
1543 variable "dnsip2". The first DNS serverip is always
1544 stored in the variable "dnsip", when BOOTP_DNS is defined.
1546 config BOOTP_GATEWAY
1547 bool "Request & store 'gatewayip' from BOOTP/DHCP server"
1549 depends on CMD_BOOTP
1551 config BOOTP_HOSTNAME
1552 bool "Request & store 'hostname' from BOOTP/DHCP server"
1554 depends on CMD_BOOTP
1556 The name may or may not be qualified with the local domain name.
1558 config BOOTP_PREFER_SERVERIP
1559 bool "serverip variable takes precedent over DHCP server IP."
1560 depends on CMD_BOOTP
1562 By default a BOOTP/DHCP reply will overwrite the 'serverip' variable.
1564 With this option enabled, the 'serverip' variable in the environment
1565 takes precedence over DHCP server IP and will only be set by the DHCP
1566 server if not already set in the environment.
1568 config BOOTP_SUBNETMASK
1569 bool "Request & store 'netmask' from BOOTP/DHCP server"
1571 depends on CMD_BOOTP
1573 config BOOTP_NISDOMAIN
1574 bool "Request & store 'nisdomain' from BOOTP/DHCP server"
1575 depends on CMD_BOOTP
1577 config BOOTP_NTPSERVER
1578 bool "Request & store 'ntpserverip' from BOOTP/DHCP server"
1579 depends on CMD_BOOTP
1581 config BOOTP_TIMEOFFSET
1582 bool "Request & store 'timeoffset' from BOOTP/DHCP server"
1583 depends on CMD_BOOTP && CMD_SNTP
1588 Selecting this will allow capturing all Ethernet packets and store
1589 them in physical memory in a PCAP formated file,
1590 later to be analyzed by PCAP reader application (IE. WireShark).
1593 bool "Send PXE client arch to BOOTP/DHCP server"
1595 depends on CMD_BOOTP && CMD_PXE
1597 Supported for ARM, ARM64, and x86 for now.
1599 config BOOTP_PXE_CLIENTARCH
1601 depends on BOOTP_PXE
1602 default 0x16 if ARM64
1606 config BOOTP_VCI_STRING
1608 depends on CMD_BOOTP
1609 default "U-Boot.armv7" if CPU_V7A || CPU_V7M || CPU_V7R
1610 default "U-Boot.armv8" if ARM64
1611 default "U-Boot.arm" if ARM
1618 tftpboot - boot image via network using TFTP protocol
1622 depends on CMD_TFTPBOOT
1624 TFTP put command, for uploading files to a server
1628 depends on CMD_TFTPBOOT
1630 Act as a TFTP server and boot the first received file
1632 config NET_TFTP_VARS
1633 bool "Control TFTP timeout and count through environment"
1634 depends on CMD_TFTPBOOT
1637 If set, allows controlling the TFTP timeout through the
1638 environment variable tftptimeout, and the TFTP maximum
1639 timeout count through the variable tftptimeoutcountmax.
1640 If unset, timeout and maximum are hard-defined as 1 second
1641 and 10 timouts per TFTP transfer.
1646 Boot image via network using RARP/TFTP protocol
1652 Boot image via network using NFS protocol.
1655 int "Timeout in milliseconds for NFS mounts"
1659 Timeout in milliseconds used in NFS protocol. If you encounter
1660 "ERROR: Cannot umount" in nfs command, try longer timeout such as
1667 If set, allows 802.3(clause 22) MII Management functions interface access
1668 The management interface specified in Clause 22 provides
1669 a simple, two signal, serial interface to connect a
1670 Station Management entity and a managed PHY for providing access
1671 to management parameters and services.
1672 The interface is referred to as the MII management interface.
1675 bool "Call mii_init() in the mii command"
1676 depends on CMD_MII && (MPC8XX_FEC || FSLDMAFE || MCFFEC)
1682 If set, allows Enable 802.3(clause 45) MDIO interface registers access
1683 The MDIO interface is orthogonal to the MII interface and extends
1684 it by adding access to more registers through indirect addressing.
1689 Send ICMP ECHO_REQUEST to network host
1694 Perform CDP network configuration
1700 Synchronize RTC via network
1705 Lookup the IP of a hostname
1707 config CMD_LINK_LOCAL
1711 Acquire a network IP address using the link-local protocol
1718 Allow control of L2 Ethernet switch commands. These are supported
1719 by the vsc9953 Ethernet driver at present. Sub-commands allow
1720 operations such as enabling / disabling a port and
1721 viewing/maintaining the filtering database (FDB)
1727 Boot image via network using PXE protocol
1732 Wait for wake-on-lan Magic Packet
1736 menu "Misc commands"
1739 bool "Enable 'bmp' command"
1740 depends on LCD || DM_VIDEO || VIDEO
1742 This provides a way to obtain information about a BMP-format image
1743 and to display it. BMP (which presumably stands for BitMaP) is a
1744 file format defined by Microsoft which supports images of various
1745 depths, formats and compression methods. Headers on the file
1746 determine the formats used. This command can be used by first loading
1747 the image into RAM, then using this command to look at it or display
1750 config CMD_BOOTCOUNT
1752 depends on BOOTCOUNT_LIMIT
1754 Enable the bootcount command, which allows interrogation and
1755 reset of the bootcounter.
1758 bool "Enable board-specific commands"
1760 (deprecated: instead, please define a Kconfig option for each command)
1762 Some boards have board-specific commands which are only enabled
1763 during developemnt and need to be turned off for production. This
1764 option provides a way to control this. The commands that are enabled
1765 vary depending on the board.
1767 config CMD_BLOCK_CACHE
1768 bool "blkcache - control and stats for block cache"
1769 depends on BLOCK_CACHE
1770 default y if BLOCK_CACHE
1772 Enable the blkcache command, which can be used to control the
1773 operation of the cache functions.
1774 This is most useful when fine-tuning the operation of the cache
1775 during development, but also allows the cache to be disabled when
1776 it might hurt performance (e.g. when using the ums command).
1783 Enable the 'button' command which allows to get the status of
1784 buttons supported by the board. The buttonss can be listed with
1785 'button list' and state can be known with 'button <label>'.
1786 Any button drivers can be controlled with this command, e.g.
1790 bool "icache or dcache"
1792 Enable the "icache" and "dcache" commands
1794 config CMD_CONITRACE
1795 bool "conitrace - trace console input codes"
1797 Enable the 'conitrace' command which displays the codes received
1798 from the console input as hexadecimal numbers.
1801 bool "Enable clear screen command 'cls'"
1802 depends on DM_VIDEO || LCD || VIDEO
1805 Enable the 'cls' command which clears the screen contents
1806 on video frame buffer.
1809 bool "efidebug - display/configure UEFI environment"
1810 depends on EFI_LOADER
1811 select EFI_DEVICE_PATH_TO_TEXT
1813 Enable the 'efidebug' command which provides a subset of UEFI
1814 shell utility with simplified functionality. It will be useful
1815 particularly for managing boot parameters as well as examining
1816 various EFI status for debugging.
1818 config CMD_EXCEPTION
1819 bool "exception - raise exception"
1820 depends on ARM || RISCV || SANDBOX || X86
1822 Enable the 'exception' command which allows to raise an exception.
1829 Enable the 'led' command which allows for control of LEDs supported
1830 by the board. The LEDs can be listed with 'led list' and controlled
1831 with led on/off/togle/blink. Any LED drivers can be controlled with
1832 this command, e.g. led_gpio.
1839 Enable the 'date' command for getting/setting the time/date in RTC
1846 Enable the 'rtc' command for low-level access to RTC devices.
1851 Run commands and summarize execution time.
1854 bool "gettime - read elapsed time"
1856 Enable the 'gettime' command which reads the elapsed time since
1857 U-Boot started running. This shows the time in seconds and
1858 milliseconds. See also the 'bootstage' command which provides more
1859 flexibility for boot timing.
1866 Print bytes from the hardware random number generator.
1868 config CMD_KASLRSEED
1872 Set the kaslr-seed in the chosen node with entropy provided by a
1873 hardware random number generator.
1879 Delay execution for some time
1882 bool "support for multiprocessor commands"
1886 This enables commands to bringup different processors
1887 in multiprocessor cases.
1892 Access the system timer.
1898 This provides basic access to the U-Boot's sound support. The main
1899 feature is to play a beep.
1901 sound init - set up sound system
1902 sound play - play a sound
1908 Boot image via local extlinux.conf file
1914 This provides access to the QEMU firmware interface. The main
1915 feature is to allow easy loading of files passed to qemu-system
1916 via -kernel / -initrd
1921 This provides access to Linux PStore with Rammoops backend. The main
1922 feature is to allow to display or save PStore records.
1924 See doc/pstore.rst for more information.
1928 config CMD_PSTORE_MEM_ADDR
1929 hex "Memory Address"
1930 depends on CMD_PSTORE
1932 Base addr used for PStore ramoops memory, should be identical to
1933 ramoops.mem_address parameter used by kernel
1935 config CMD_PSTORE_MEM_SIZE
1937 depends on CMD_PSTORE
1940 Size of PStore ramoops memory, should be identical to ramoops.mem_size
1941 parameter used by kernel, a power of 2 and larger than the sum of the
1944 config CMD_PSTORE_RECORD_SIZE
1945 hex "Dump record size"
1946 depends on CMD_PSTORE
1949 Size of each dump done on oops/panic, should be identical to
1950 ramoops.record_size parameter used by kernel and a power of 2
1953 config CMD_PSTORE_CONSOLE_SIZE
1954 hex "Kernel console log size"
1955 depends on CMD_PSTORE
1958 Size of kernel console log, should be identical to
1959 ramoops.console_size parameter used by kernel and a power of 2
1962 config CMD_PSTORE_FTRACE_SIZE
1963 hex "FTrace log size"
1964 depends on CMD_PSTORE
1967 Size of ftrace log, should be identical to ramoops.ftrace_size
1968 parameter used by kernel and a power of 2
1970 config CMD_PSTORE_PMSG_SIZE
1971 hex "User space message log size"
1972 depends on CMD_PSTORE
1975 Size of user space message log, should be identical to
1976 ramoops.pmsg_size parameter used by kernel and a power of 2
1978 config CMD_PSTORE_ECC_SIZE
1980 depends on CMD_PSTORE
1983 if non-zero, the option enables ECC support and specifies ECC buffer
1984 size in bytes (1 is a special value, means 16 bytes ECC), should be
1985 identical to ramoops.ramoops_ecc parameter used by kernel
1989 source "cmd/mvebu/Kconfig"
1992 bool "terminal - provides a way to attach a serial terminal"
1994 Provides a 'cu'-like serial terminal command. This can be used to
1995 access other serial ports from the system console. The terminal
1996 is very simple with no special processing of characters. As with
1997 cu, you can press ~. (tilde followed by period) to exit.
2000 bool "uuid, guid - generation of unique IDs"
2003 This enables two commands:
2005 uuid - generate random Universally Unique Identifier
2006 guid - generate Globally Unique Identifier based on random UUID
2008 The two commands are very similar except for the endianness of the
2013 source "cmd/ti/Kconfig"
2015 config CMD_BOOTSTAGE
2016 bool "Enable the 'bootstage' command"
2017 depends on BOOTSTAGE
2019 Add a 'bootstage' command which supports printing a report
2020 and un/stashing of bootstage data.
2022 menu "Power commands"
2024 bool "Enable Driver Model PMIC command"
2027 This is the pmic command, based on a driver model pmic's API.
2028 Command features are unchanged:
2029 - list - list pmic devices
2030 - pmic dev <id> - show or [set] operating pmic device (NEW)
2031 - pmic dump - dump registers
2032 - pmic read address - read byte of register at address
2033 - pmic write address - write byte to register at address
2034 The only one change for this command is 'dev' subcommand.
2036 config CMD_REGULATOR
2037 bool "Enable Driver Model REGULATOR command"
2038 depends on DM_REGULATOR
2040 This command is based on driver model regulator's API.
2041 User interface features:
2042 - list - list regulator devices
2043 - regulator dev <id> - show or [set] operating regulator device
2044 - regulator info - print constraints info
2045 - regulator status - print operating status
2046 - regulator value <val] <-f> - print/[set] voltage value [uV]
2047 - regulator current <val> - print/[set] current value [uA]
2048 - regulator mode <id> - print/[set] operating mode id
2049 - regulator enable - enable the regulator output
2050 - regulator disable - disable the regulator output
2052 The '-f' (force) option can be used for set the value which exceeds
2053 the limits, which are found in device-tree and are kept in regulator's
2054 uclass plat structure.
2058 menu "Security commands"
2060 bool "Enable the 'aes' command"
2063 This provides a means to encrypt and decrypt data using the AES
2064 (Advanced Encryption Standard). This algorithm uses a symetric key
2065 and is widely used as a streaming cipher. Different key lengths are
2066 supported by the algorithm but this command only supports 128 bits
2070 bool "Enable the 'blob' command"
2071 depends on !MX6ULL && !MX6SLL && !MX6SL
2072 select IMX_HAB if ARCH_MX6 || ARCH_MX7 || ARCH_MX7ULP || ARCH_IMX8M
2074 This is used with the Freescale secure boot mechanism.
2076 Freescale's SEC block has built-in Blob Protocol which provides
2077 a method for protecting user-defined data across system power
2078 cycles. SEC block protects data in a data structure called a Blob,
2079 which provides both confidentiality and integrity protection.
2081 Encapsulating data as a blob
2082 Each time that the Blob Protocol is used to protect data, a
2083 different randomly generated key is used to encrypt the data.
2084 This random key is itself encrypted using a key which is derived
2085 from SoC's non-volatile secret key and a 16 bit Key identifier.
2086 The resulting encrypted key along with encrypted data is called a
2087 blob. The non-volatile secure key is available for use only during
2090 During decapsulation, the reverse process is performed to get back
2094 blob enc - encapsulating data as a cryptgraphic blob
2095 blob dec - decapsulating cryptgraphic blob to get the data
2099 blob enc src dst len km
2101 Encapsulate and create blob of data $len bytes long
2102 at address $src and store the result at address $dst.
2103 $km is the 16 byte key modifier is also required for
2104 generation/use as key for cryptographic operation. Key
2105 modifier should be 16 byte long.
2107 blob dec src dst len km
2109 Decapsulate the blob of data at address $src and
2110 store result of $len byte at addr $dst.
2111 $km is the 16 byte key modifier is also required for
2112 generation/use as key for cryptographic operation. Key
2113 modifier should be 16 byte long.
2116 bool "Support 'hash' command"
2119 This provides a way to hash data in memory using various supported
2120 algorithms (such as SHA1, MD5, CRC32). The computed digest can be
2121 saved to memory or to an environment variable. It is also possible
2122 to verify a hash against data in memory.
2125 bool "Support the 'hvc' command"
2126 depends on ARM_SMCCC
2128 Allows issuing Hypervisor Calls (HVCs). Mostly useful for
2129 development and testing.
2132 bool "Support the 'smc' command"
2133 depends on ARM_SMCCC
2135 Allows issuing Secure Monitor Calls (SMCs). Mostly useful for
2136 development and testing.
2142 Add -v option to verify data against a hash.
2145 bool "scp03 - SCP03 enable and rotate/provision operations"
2148 This command provides access to a Trusted Application
2149 running in a TEE to request Secure Channel Protocol 03
2150 (SCP03) enablement and/or rotation of its SCP03 keys.
2159 bool "Enable the 'tpm' command"
2160 depends on TPM_V1 || TPM_V2
2161 select CMD_TPM_V1 if TPM_V1
2162 select CMD_TPM_V2 if TPM_V2
2164 This provides a means to talk to a TPM from the command line. A wide
2165 range of commands if provided - see 'tpm help' for details. The
2166 command requires a suitable TPM on your board and the correct driver
2172 bool "Enable the 'tpm test' command"
2175 This provides a a series of tests to confirm that the TPMv1.x is
2176 working correctly. The tests cover initialisation, non-volatile RAM,
2177 extend, global lock and checking that timing is within expectations.
2178 The tests pass correctly on Infineon TPMs but may need to be adjusted
2185 menu "Firmware commands"
2187 bool "Enable crosec command"
2191 Enable command-line access to the Chrome OS EC (Embedded
2192 Controller). This provides the 'crosec' command which has
2193 a number of sub-commands for performing EC tasks such as
2194 updating its flash, accessing a small saved context area
2195 and talking to the I2C bus behind the EC (if there is one).
2198 menu "Filesystem commands"
2200 bool "Enable the 'btrsubvol' command"
2203 This enables the 'btrsubvol' command to list subvolumes
2204 of a BTRFS filesystem. There are no special commands for
2205 listing BTRFS directories or loading BTRFS files - this
2206 can be done by the generic 'fs' commands (see CMD_FS_GENERIC)
2207 when BTRFS is enabled (see FS_BTRFS).
2210 bool "Enable the 'cbfs' command"
2213 Define this to enable support for reading from a Coreboot
2214 filesystem. This is a ROM-based filesystem used for accessing files
2215 on systems that use coreboot as the first boot-loader and then load
2216 U-Boot to actually boot the Operating System. Available commands are
2217 cbfsinit, cbfsinfo, cbfsls and cbfsload.
2220 bool "Enable the 'cramfs' command"
2221 depends on FS_CRAMFS
2223 This provides commands for dealing with CRAMFS (Compressed ROM
2224 filesystem). CRAMFS is useful when space is tight since files are
2225 compressed. Two commands are provided:
2227 cramfsls - lists files in a cramfs image
2228 cramfsload - loads a file from a cramfs image
2231 bool "EROFS command support"
2234 Support for the EROFS fs
2237 bool "ext2 command support"
2240 Enables EXT2 FS command
2243 bool "ext4 command support"
2246 Enables EXT4 FS command
2248 config CMD_EXT4_WRITE
2250 bool "ext4 write command support"
2253 Enables EXT4 FS write command
2256 bool "FAT command support"
2259 Support for the FAT fs
2262 bool "SquashFS command support"
2265 Enables SquashFS filesystem commands (e.g. load, ls).
2267 config CMD_FS_GENERIC
2268 bool "filesystem commands"
2270 Enables filesystem commands (e.g. load, ls) that work for multiple
2274 bool "fsuuid command"
2276 Enables fsuuid command for filesystem UUID.
2279 bool "jffs2 command"
2282 Enables commands to support the JFFS2 (Journalling Flash File System
2283 version 2) filesystem. This enables fsload, ls and fsinfo which
2284 provide the ability to load files, list directories and obtain
2285 filesystem information.
2288 string "Default device for JFFS2"
2289 depends on CMD_JFFS2
2292 The default device to use with the jffs2 command.
2294 config JFFS2_PART_OFFSET
2295 hex "Default offset within flash to locate the JFFS2 image"
2296 depends on CMD_JFFS2
2299 The default offset within flash to locate the JFFS2 image.
2301 config JFFS2_PART_SIZE
2302 hex "Default size of JFFS2 partition"
2303 depends on CMD_JFFS2
2306 The default size of the JFFS2 partition
2309 bool "MTD partition support"
2312 MTD partitioning tool support.
2313 It is strongly encouraged to avoid using this command
2314 anymore along with 'sf', 'nand', 'onenand'. One can still
2315 declare the partitions in the mtdparts environment variable
2316 but better use the MTD stack and the 'mtd' command instead.
2318 config CMD_MTDPARTS_SPREAD
2319 bool "Padd partition size to take account of bad blocks"
2320 depends on CMD_MTDPARTS
2322 This enables the 'spread' sub-command of the mtdparts command.
2323 This command will modify the existing mtdparts variable by increasing
2324 the size of the partitions such that 1) each partition's net size is
2325 at least as large as the size specified in the mtdparts variable and
2326 2) each partition starts on a good block.
2328 config CMD_MTDPARTS_SHOW_NET_SIZES
2329 bool "Show net size (w/o bad blocks) of partitions"
2330 depends on CMD_MTDPARTS
2332 Adds two columns to the printed partition table showing the
2333 effective usable size of a partition, if bad blocks are taken
2336 config MTDIDS_DEFAULT
2337 string "Default MTD IDs"
2338 depends on MTD || SPI_FLASH
2340 Defines a default MTD IDs list for use with MTD partitions in the
2341 Linux MTD command line partitions format.
2343 config MTDPARTS_DEFAULT
2344 string "Default MTD partition scheme"
2345 depends on MTD || SPI_FLASH
2347 Defines a default MTD partitioning scheme in the Linux MTD command
2348 line partitions format
2351 bool "reiser - Access to reiserfs filesystems"
2353 This provides two commands which operate on a resierfs filesystem,
2354 commonly used some years ago:
2356 reiserls - list files
2357 reiserload - load a file
2360 bool "yaffs2 - Access of YAFFS2 filesystem"
2364 This provides commands for accessing a YAFFS2 filesystem. Yet
2365 Another Flash Filesystem 2 is a filesystem designed specifically
2366 for NAND flash. It incorporates bad-block management and ensures
2367 that device writes are sequential regardless of filesystem
2371 bool "zfs - Access of ZFS filesystem"
2373 This provides commands to accessing a ZFS filesystem, commonly used
2374 on Solaris systems. Two sub-commands are provided:
2376 zfsls - list files in a directory
2377 zfsload - load a file
2379 See doc/README.zfs for more details.
2383 menu "Debug commands"
2385 config CMD_CBSYSINFO
2388 default y if SYS_COREBOOT
2390 This provides information about the coreboot sysinfo table stored in
2391 memory by coreboot before jumping to U-Boot. It can be useful for
2392 debugging the beaaviour of coreboot or U-Boot.
2395 bool "diag - Board diagnostics"
2397 This command provides access to board diagnostic tests. These are
2398 called Power-on Self Tests (POST). The command allows listing of
2399 available tests and running either all the tests, or specific tests
2403 bool "event - Show information about events"
2404 default y if EVENT_DEBUG
2406 This enables the 'event' command which provides information about
2407 events and event-handler routines. This can help to device event
2411 bool "irq - Show information about interrupts"
2412 depends on !ARM && !MIPS && !RISCV && !SH
2414 This enables two commands:
2416 interrupts - enable or disable interrupts
2417 irqinfo - print device-specific interrupt information
2420 bool "kgdb - Allow debugging of U-Boot with gdb"
2423 This enables a 'kgdb' command which allows gdb to connect to U-Boot
2424 over a serial link for debugging purposes. This allows
2425 single-stepping, inspecting variables, etc. This is supported only
2426 on PowerPC at present.
2429 bool "log - Generation, control and access to logging"
2433 This provides access to logging features. It allows the output of
2434 log data to be controlled to a limited extent (setting up the default
2435 maximum log level for emitting of records). It also provides access
2436 to a command used for testing the log system.
2439 bool "trace - Support tracing of function calls and timing"
2443 Enables a command to control using of function tracing within
2444 U-Boot. This allows recording of call traces including timing
2445 information. The command can write data to memory for exporting
2446 for analysis (e.g. using bootchart). See doc/README.trace for full
2450 bool "avb - Android Verified Boot 2.0 operations"
2451 depends on AVB_VERIFY
2453 Enables a "avb" command to perform verification of partitions using
2454 Android Verified Boot 2.0 functionality. It includes such subcommands:
2455 avb init - initialize avb2 subsystem
2456 avb read_rb - read rollback index
2457 avb write_rb - write rollback index
2458 avb is_unlocked - check device lock state
2459 avb get_uuid - read and print uuid of a partition
2460 avb read_part - read data from partition
2461 avb read_part_hex - read data from partition and output to stdout
2462 avb write_part - write data to partition
2463 avb verify - run full verification chain
2465 config CMD_STACKPROTECTOR_TEST
2466 bool "Test command for stack protector"
2467 depends on STACKPROTECTOR
2469 Enable stackprot_test command
2470 The stackprot_test command will force a stack overrun to test
2471 the stack smashing detection mechanisms.
2476 tristate "Enable UBI - Unsorted block images commands"
2479 UBI is a software layer above MTD layer which admits use of LVM-like
2480 logical volumes on top of MTD devices, hides some complexities of
2481 flash chips like wear and bad blocks and provides some other useful
2482 capabilities. Please, consult the MTD web site for more details
2483 (www.linux-mtd.infradead.org). Activate this option if you want
2484 to use U-Boot UBI commands.
2485 It is also strongly encouraged to also enable CONFIG_MTD to get full
2488 config CMD_UBI_RENAME
2489 bool "Enable rename"
2492 Enable a "ubi" command to rename ubi volume:
2493 ubi rename <oldname> <newname>
2496 tristate "Enable UBIFS - Unsorted block images filesystem commands"
2498 default y if CMD_UBI
2501 UBIFS is a file system for flash devices which works on top of UBI.
2503 config MMC_SPEED_MODE_SET
2504 bool "set speed mode using mmc command"
2508 Enable setting speed mode using mmc rescan and mmc dev commands.
2509 The speed mode is provided as the last argument in these commands
2510 and is indicated using the index from enum bus_mode in
2511 include/mmc.h. A speed mode can be set only if it has already
2512 been enabled in the device tree.
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