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.
198 bool "Support booting UEFI FIT images"
199 depends on CMD_BOOTEFI && CMD_BOOTM && FIT
202 Support booting UEFI FIT images via the bootm command.
207 Boot the Linux zImage
211 depends on ARM64 || RISCV
214 Boot an AArch64 Linux Kernel image from memory.
217 bool "Support booting Linux OS images"
218 depends on CMD_BOOTM || CMD_BOOTZ || CMD_BOOTI
221 Support booting the Linux kernel directly via a command such as bootm
225 bool "Support booting NetBSD (non-EFI) loader images"
229 Support booting NetBSD via the bootm command.
231 config BOOTM_OPENRTOS
232 bool "Support booting OPENRTOS / FreeRTOS images"
235 Support booting OPENRTOS / FreeRTOS via the bootm command.
238 bool "Support booting Enea OSE images"
239 depends on (ARM && (ARM64 || CPU_V7A || CPU_V7R) || SANDBOX || PPC || X86)
242 Support booting Enea OSE images via the bootm command.
245 bool "Support booting Plan9 OS images"
249 Support booting Plan9 images via the bootm command.
252 bool "Support booting RTEMS OS images"
256 Support booting RTEMS images via the bootm command.
259 bool "Support booting VxWorks OS images"
263 Support booting VxWorks images via the bootm command.
267 depends on EFI_LOADER
270 Boot an EFI image from memory.
272 config CMD_BOOTEFI_HELLO_COMPILE
273 bool "Compile a standard EFI hello world binary for testing"
274 depends on CMD_BOOTEFI && !CPU_V7M
277 This compiles a standard EFI hello world application with U-Boot so
278 that it can be used with the test/py testing framework. This is useful
279 for testing that EFI is working at a basic level, and for bringing
280 up EFI support on a new architecture.
282 No additional space will be required in the resulting U-Boot binary
283 when this option is enabled.
285 config CMD_BOOTEFI_HELLO
286 bool "Allow booting a standard EFI hello world for testing"
287 depends on CMD_BOOTEFI_HELLO_COMPILE
288 default y if CMD_BOOTEFI_SELFTEST
290 This adds a standard EFI hello world application to U-Boot so that
291 it can be used with the 'bootefi hello' command. This is useful
292 for testing that EFI is working at a basic level, and for bringing
293 up EFI support on a new architecture.
295 source lib/efi_selftest/Kconfig
301 Add an ANSI terminal boot menu command.
306 Android DTB/DTBO image manipulation commands. Read dtb/dtbo files from
307 image into RAM, dump image structure information, etc. Those dtb/dtbo
308 files should be merged in one dtb further, which needs to be passed to
309 the kernel, as part of a boot process.
313 depends on ANDROID_BOOT_IMAGE
315 Android Boot Image manipulation commands. Allows one to extract
316 images contained in boot.img, like kernel, ramdisk, dtb, etc, and
317 obtain corresponding meta-information from boot.img.
319 See doc/android/boot-image.rst for details.
322 bool "bootelf, bootvx"
326 Boot an ELF/vxWorks image from the memory.
329 bool "Flattened Device Tree utility commands"
333 Do FDT related setup before booting into the Operating System.
335 config SUPPORT_EXTENSION_SCAN
339 bool "Extension board management command"
341 depends on SUPPORT_EXTENSION_SCAN
343 Enables the "extension" command, which allows to detect
344 extension boards connected to the system, and apply
345 corresponding Device Tree overlays.
351 Start an application at a given address.
357 Run the command in the given environment variable.
363 Print header information for application image.
368 List all images found in flash
374 Extract a part of a multi-image.
377 bool "spl export - Export boot information for Falcon boot"
380 Falcon mode allows booting directly from SPL into an Operating
381 System such as Linux, thus skipping U-Boot proper. See
382 doc/README.falcon for full information about how to use this
385 config CMD_SPL_NAND_OFS
386 hex "Offset of OS args or dtb for Falcon-mode NAND boot"
387 depends on CMD_SPL && (TPL_NAND_SUPPORT || SPL_NAND_SUPPORT)
390 This provides the offset of the command line arguments for Linux
391 when booting from NAND in Falcon mode. See doc/README.falcon
392 for full information about how to use this option (and also see
393 board/gateworks/gw_ventana/README for an example).
395 config CMD_SPL_NOR_OFS
396 hex "Offset of OS args or dtb for Falcon-mode NOR boot"
397 depends on CMD_SPL && SPL_NOR_SUPPORT
400 This provides the offset of the command line arguments or dtb for
401 Linux when booting from NOR in Falcon mode.
403 config CMD_SPL_WRITE_SIZE
404 hex "Size of argument area"
408 This provides the size of the command-line argument area in NAND
409 flash used by Falcon-mode boot. See the documentation until CMD_SPL
412 config CMD_THOR_DOWNLOAD
413 bool "thor - TIZEN 'thor' download"
416 Implements the 'thor' download protocol. This is a way of
417 downloading a software update over USB from an attached host.
418 There is no documentation about this within the U-Boot source code
419 but you should be able to find something on the interwebs.
422 bool "zboot - x86 boot command"
424 With x86 machines it is common to boot a bzImage file which
425 contains both a kernel and a setup.bin file. The latter includes
426 configuration information from the dark ages which x86 boards still
427 need to pick things out of.
429 Consider using FIT in preference to this since it supports directly
430 booting both 32- and 64-bit kernels, as well as secure boot.
431 Documentation is available in doc/uImage.FIT/x86-fit-boot.txt
435 menu "Environment commands"
438 bool "ask for env variable"
440 Ask for environment variable
458 Edit environment variable.
463 Allow for searching environment variables
469 Save all environment variables into the compiled-in persistent
474 depends on CMD_SAVEENV
476 Erase environment variables from the compiled-in persistent
479 config CMD_ENV_EXISTS
483 Check if a variable is defined in the environment for use in
486 config CMD_ENV_CALLBACK
487 bool "env callbacks - print callbacks and their associated variables"
489 Some environment variable have callbacks defined by
490 U_BOOT_ENV_CALLBACK. These are called when the variable changes.
491 For example changing "baudrate" adjust the serial baud rate. This
492 command lists the currently defined callbacks.
495 bool "env flags -print variables that have non-default flags"
497 Some environment variables have special flags that control their
498 behaviour. For example, serial# can only be written once and cannot
499 be deleted. This command shows the variables that have special
502 config CMD_NVEDIT_EFI
503 bool "env [set|print] -e - set/print UEFI variables"
504 depends on EFI_LOADER
507 UEFI variables are encoded as some form of U-Boot variables.
508 If enabled, we are allowed to set/print UEFI variables using
509 "env" command with "-e" option without knowing details.
511 config CMD_NVEDIT_INFO
512 bool "env info - print or evaluate environment information"
514 Print environment information:
515 - env_valid : is environment valid
516 - env_ready : is environment imported into hash table
517 - env_use_default : is default environment used
519 This command can be optionally used for evaluation in scripts:
520 [-d] : evaluate whether default environment is used
521 [-p] : evaluate whether environment can be persisted
523 The result of multiple evaluations will be combined with AND.
525 config CMD_NVEDIT_LOAD
528 Load all environment variables from the compiled-in persistent
531 config CMD_NVEDIT_SELECT
534 Select the compiled-in persistent storage of environment variables.
538 menu "Memory commands"
543 Compute binary operations (xor, or, and) of byte arrays of arbitrary
544 size from memory and store the result in memory or the environment.
548 default y if BLOBLIST
550 Show information about the bloblist, a collection of binary blobs
551 held in memory that persist between SPL and U-Boot. In the case of
552 x86 devices the bloblist can be used to hold ACPI tables so that they
553 remain available in memory.
566 Add -v option to verify data against a crc32 checksum.
569 bool "eeprom - EEPROM subsystem"
571 (deprecated, needs conversion to driver model)
572 Provides commands to read and write EEPROM (Electrically Erasable
573 Programmable Read Only Memory) chips that are connected over an
576 config CMD_EEPROM_LAYOUT
577 bool "Enable layout-aware eeprom commands"
578 depends on CMD_EEPROM
580 (deprecated, needs conversion to driver model)
581 When enabled, additional eeprom sub-commands become available.
583 eeprom print - prints the contents of the eeprom in a human-readable
584 way (eeprom layout fields, and data formatted to be fit for human
587 eeprom update - allows user to update eeprom fields by specifying
588 the field name, and providing the new data in a human readable format
589 (same format as displayed by the eeprom print command).
591 Both commands can either auto detect the layout, or be told which
595 __weak int parse_layout_version(char *str)
596 - override to provide your own layout name parsing
597 __weak void __eeprom_layout_assign(struct eeprom_layout *layout,
599 - override to setup the layout metadata based on the version
600 __weak int eeprom_layout_detect(unsigned char *data)
601 - override to provide your own algorithm for detecting layout
604 - contains various printing and updating functions for common
605 types of eeprom fields. Can be used for defining
608 config EEPROM_LAYOUT_HELP_STRING
609 string "Tells user what layout names are supported"
610 depends on CMD_EEPROM_LAYOUT
611 default "<not defined>"
613 Help printed with the LAYOUT VERSIONS part of the 'eeprom'
616 config SYS_I2C_EEPROM_BUS
617 int "I2C bus of the EEPROM device."
618 depends on CMD_EEPROM
621 config SYS_I2C_EEPROM_ADDR_LEN
622 int "Length in bytes of the EEPROM memory array address"
623 depends on CMD_EEPROM || ID_EEPROM
627 Note: This is NOT the chip address length!
629 config SYS_EEPROM_SIZE
630 depends on CMD_EEPROM
631 int "Size in bytes of the EEPROM device"
634 config SYS_EEPROM_PAGE_WRITE_BITS
635 int "Number of bits used to address bytes in a single page"
636 depends on CMD_EEPROM
639 The EEPROM page size is 2^SYS_EEPROM_PAGE_WRITE_BITS.
640 A 64 byte page, for example would require six bits.
642 config SYS_EEPROM_PAGE_WRITE_DELAY_MS
643 int "Number of milliseconds to delay between page writes"
644 depends on CMD_EEPROM || CMD_I2C
650 Infinite write loop on address range
656 Compute MD5 checksum.
660 depends on CMD_MD5SUM
662 Add -v option to verify data against an MD5 checksum.
667 Display memory information.
670 bool "md, mm, nm, mw, cp, cmp, base, loop"
675 mm - memory modify (auto-incrementing address)
676 nm - memory modify (constant address)
677 mw - memory write (fill)
680 base - print or set address offset
681 loop - initialize loop on address range
683 config CMD_MEM_SEARCH
684 bool "ms - Memory search"
686 Memory-search command
688 This allows searching through a region of memory looking for hex
689 data (byte, 16-bit word, 32-bit long, also 64-bit on machines that
690 support it). It is also possible to search for a string. The
691 command accepts a memory range and a list of values to search for.
692 The values need to appear in memory in the same order they are given
693 in the command. At most 10 matches can be returned at a time, but
694 pressing return will show the next 10 matches. Environment variables
695 are set for use with scripting (memmatches, memaddr, mempos).
698 bool "Enable cyclic md/mw commands"
699 depends on CMD_MEMORY
701 Add the "mdc" and "mwc" memory commands. These are cyclic
706 This command will print 4 bytes (10,11,12,13) each 500 ms.
708 => mwc.l 100 12345678 10
709 This command will write 12345678 to address 100 all 10 ms.
714 depends on CMD_MEMORY && (LIB_RAND || LIB_HW_RAND)
716 random - fill memory with random data
721 Simple RAM read/write test.
725 config SYS_ALT_MEMTEST
726 bool "Alternative test"
728 Use a more complete alternative memory test.
732 config SYS_ALT_MEMTEST_BITFLIP
736 The alternative memory test includes bitflip test since 2020.07.
737 The bitflip test significantly increases the overall test time.
738 Bitflip test can optionally be disabled here.
742 config SYS_MEMTEST_START
743 hex "default start address for mtest"
746 This is the default start address for mtest for simple read/write
747 test. If no arguments are given to mtest, default address is used
750 config SYS_MEMTEST_END
751 hex "default end address for mtest"
754 This is the default end address for mtest for simple read/write
755 test. If no arguments are given to mtest, default address is used
764 Compute SHA1 checksum.
766 config SHA1SUM_VERIFY
768 depends on CMD_SHA1SUM
770 Add -v option to verify data against a SHA1 checksum.
773 bool "strings - display strings in memory"
775 This works similarly to the Unix 'strings' command except that it
776 works with a memory range. String of printable characters found
777 within the range are displayed. The minimum number of characters
778 for a sequence to be considered a string can be provided.
782 menu "Compression commands"
786 default y if CMD_BOOTI
789 Support decompressing an LZMA (Lempel-Ziv-Markov chain algorithm)
794 default y if CMD_BOOTI
797 Support decompressing an LZ4 image from memory region.
801 default y if CMD_BOOTI
804 Uncompress a zip-compressed memory region.
808 select GZIP_COMPRESSED
810 Compress a memory region with zlib deflate method.
814 menu "Device access commands"
817 #depends on FLASH_CFI_DRIVER
820 ARM Ltd reference designs flash partition access
823 bool "adc - Access Analog to Digital Converters info and data"
825 depends on DM_REGULATOR
827 Shows ADC device info and permit printing one-shot analog converted
828 data from a named Analog to Digital Converter.
833 depends on PARTITIONS
835 Read/modify/write the fields of Bootloader Control Block, usually
836 stored on the flash "misc" partition with its structure defined in:
837 https://android.googlesource.com/platform/bootable/recovery/+/master/
838 bootloader_message/include/bootloader_message/bootloader_message.h
840 Some real-life use-cases include (but are not limited to):
841 - Determine the "boot reason" (and act accordingly):
842 https://source.android.com/devices/bootloader/boot-reason
843 - Get/pass a list of commands from/to recovery:
844 https://android.googlesource.com/platform/bootable/recovery
845 - Inspect/dump the contents of the BCB fields
848 bool "bind/unbind - Bind or unbind a device to/from a driver"
851 Bind or unbind a device to/from a driver from the command line.
852 This is useful in situations where a device may be handled by several
853 drivers. For example, this can be used to bind a UDC to the usb ether
854 gadget driver from the command line.
857 bool "clk - Show clock frequencies"
860 Shows clock frequences by calling a sock_clk_dump() hook function.
861 This is depreated in favour of using the CLK uclass and accessing
862 clock values from associated drivers. However currently no command
866 bool "demo - Demonstration commands for driver model"
869 Provides a 'demo' command which can be used to play around with
870 driver model. To use this properly you will need to enable one or
871 both of the demo devices (DM_DEMO_SHAPE and DM_DEMO_SIMPLE).
872 Otherwise you will always get an empty list of devices. The demo
873 devices are defined in the sandbox device tree, so the easiest
874 option is to use sandbox and pass the -d point to sandbox's
881 Enables the command "dfu" which is used to have U-Boot create a DFU
882 class device via USB. This command requires that the "dfu_alt_info"
883 environment variable be set and define the alt settings to expose to
887 bool "dm - Access to driver model information"
890 Provides access to driver model data structures and information,
891 such as a list of devices, list of uclasses and the state of each
892 device (e.g. activated). This is not required for operation, but
893 can be useful to see the state of driver model for debugging or
897 bool "fastboot - Android fastboot support"
900 This enables the command "fastboot" which enables the Android
901 fastboot mode for the platform. Fastboot is a protocol for
902 downloading images, flashing and device control used on
903 Android devices. Fastboot requires either the network stack
904 enabled or support for acting as a USB device.
906 See doc/android/fastboot.rst for more information.
909 bool "flinfo, erase, protect"
911 depends on MTD || FLASH_CFI_DRIVER || MTD_NOR_FLASH
914 flinfo - print FLASH memory information
916 protect - enable or disable FLASH write protection
925 config CMD_FPGA_LOADBP
926 bool "fpga loadbp - load partial bitstream (Xilinx only)"
929 Supports loading an FPGA device from a bitstream buffer containing
932 config CMD_FPGA_LOADFS
933 bool "fpga loadfs - load bitstream from FAT filesystem (Xilinx only)"
936 Supports loading an FPGA device from a FAT filesystem.
938 config CMD_FPGA_LOADMK
939 bool "fpga loadmk - load bitstream from image"
942 Supports loading an FPGA device from a image generated by mkimage.
944 config CMD_FPGA_LOADP
945 bool "fpga loadp - load partial bitstream"
948 Supports loading an FPGA device from a bitstream buffer containing
951 config CMD_FPGA_LOAD_SECURE
952 bool "fpga loads - loads secure bitstreams (Xilinx only)"
955 Enables the fpga loads command which is used to load secure
956 (authenticated or encrypted or both) bitstreams on to FPGA.
959 bool "fpgad - dump FPGA registers"
961 (legacy, needs conversion to driver model)
962 Provides a way to dump FPGA registers by calling the board-specific
963 fpga_get_reg() function. This functions similarly to the 'md'
967 bool "fuse - support for the fuse subssystem"
969 (deprecated - needs conversion to driver model)
970 This allows reading, sensing, programming or overriding fuses
971 which control the behaviour of the device. The command uses the
983 Control PWM channels, this allows invert/config/enable/disable PWM channels.
986 bool "GPT (GUID Partition Table) command"
988 select HAVE_BLOCK_DEVICE
989 select PARTITION_UUIDS
992 Enable the 'gpt' command to ready and write GPT style partition
996 bool "GPT Random UUID generation"
999 Enable the generation of partitions with random UUIDs if none
1002 config CMD_GPT_RENAME
1003 bool "GPT partition renaming commands"
1006 Enables the 'gpt' command to interchange names on two GPT
1007 partitions via the 'gpt swap' command or to rename single
1008 partitions via the 'rename' command.
1011 bool "ide - Support for IDE drivers"
1014 Provides an 'ide' command which allows accessing the IDE drive,
1015 resetting the IDE interface, printing the partition table and
1016 geting device info. It also enables the 'diskboot' command which
1017 permits booting from an IDE drive.
1020 bool "io - Support for performing I/O accesses"
1022 Provides an 'iod' command to display I/O space and an 'iow' command
1023 to write values to the I/O space. This can be useful for manually
1024 checking the state of devices during boot when debugging device
1028 bool "iotrace - Support for tracing I/O activity"
1030 Provides an 'iotrace' command which supports recording I/O reads and
1031 writes in a trace buffer in memory . It also maintains a checksum
1032 of the trace records (even if space is exhausted) so that the
1033 sequence of I/O accesses can be verified.
1035 When debugging drivers it is useful to see what I/O accesses were
1036 done and in what order.
1038 Even if the individual accesses are of little interest it can be
1039 useful to verify that the access pattern is consistent each time
1040 an operation is performed. In this case a checksum can be used to
1041 characterise the operation of a driver. The checksum can be compared
1042 across different runs of the operation to verify that the driver is
1045 In particular, when performing major refactoring of the driver, where
1046 the access pattern should not change, the checksum provides assurance
1047 that the refactoring work has not broken the driver.
1049 This works by sneaking into the io.h heder for an architecture and
1050 redirecting I/O accesses through iotrace's tracing mechanism.
1052 For now no commands are provided to examine the trace buffer. The
1053 format is fairly simple, so 'md' is a reasonable substitute.
1055 Note: The checksum feature is only useful for I/O regions where the
1056 contents do not change outside of software control. Where this is not
1057 suitable you can fall back to manually comparing the addresses. It
1058 might be useful to enhance tracing to only checksum the accesses and
1059 not the data read/written.
1069 bool "w1 - Support for Dallas 1-Wire protocol"
1071 Dallas 1-wire protocol support
1077 Load a binary file over serial line.
1083 Load an S-Record file over serial line
1087 bool "lsblk - list block drivers and devices"
1089 Print list of available block device drivers, and for each, the list
1090 of known block devices.
1093 bool "MBR (Master Boot Record) command"
1094 select DOS_PARTITION
1095 select HAVE_BLOCK_DEVICE
1097 Enable the 'mbr' command to ready and write MBR (Master Boot Record)
1098 style partition tables.
1104 Enable the command "misc" for accessing miscellaneous devices with
1105 a MISC uclass driver. The command provides listing all MISC devices
1106 as well as read and write functionalities via their drivers.
1112 MMC memory mapped support.
1116 config CMD_BKOPS_ENABLE
1117 bool "mmc bkops enable"
1120 Enable command for setting manual background operations handshake
1121 on a eMMC device. The feature is optionally available on eMMC devices
1122 conforming to standard >= 4.41.
1125 bool "Enable support for RPMB in the mmc command"
1126 depends on SUPPORT_EMMC_RPMB
1128 Enable the commands for reading, writing and programming the
1129 key for the Replay Protection Memory Block partition in eMMC.
1131 config CMD_MMC_SWRITE
1133 depends on MMC_WRITE
1136 Enable support for the "mmc swrite" command to write Android sparse
1145 Enable storage cloning over block devices, useful for
1146 initial flashing by external block device without network
1149 config CMD_OPTEE_RPMB
1150 bool "Enable read/write support on RPMB via OPTEE"
1151 depends on SUPPORT_EMMC_RPMB && OPTEE
1153 Enable the commands for reading, writing persistent named values
1154 in the Replay Protection Memory Block partition in eMMC by
1155 using Persistent Objects in OPTEE
1160 select MTD_PARTITIONS
1162 MTD commands support.
1166 depends on MULTIPLEXER
1168 List, select, and deselect mux controllers on the fly.
1172 default y if NAND_SUNXI
1173 depends on MTD_RAW_NAND
1178 config CMD_NAND_TRIMFFS
1179 bool "nand write.trimffs"
1180 default y if ARCH_SUNXI
1182 Allows one to skip empty pages when flashing something on a NAND.
1184 config CMD_NAND_LOCK_UNLOCK
1185 bool "nand lock/unlock"
1187 NAND locking support.
1189 config CMD_NAND_TORTURE
1192 NAND torture support.
1201 NVM Express device support
1204 bool "onenand - access to onenand device"
1207 OneNAND is a brand of NAND ('Not AND' gate) flash which provides
1208 various useful features. This command allows reading, writing,
1209 and erasing blocks. It allso provides a way to show and change
1210 bad blocks, and test the device.
1215 Enable the 'osd' command which allows to query information from and
1216 write text data to a on-screen display (OSD) device; a virtual device
1217 associated with a display capable of displaying a text overlay on the
1218 display it's associated with..
1222 select HAVE_BLOCK_DEVICE
1223 select PARTITION_UUIDS
1225 Read and display information about the partition table on
1229 bool "pci - Access PCI devices"
1231 Provide access to PCI (Peripheral Interconnect Bus), a type of bus
1232 used on some devices to allow the CPU to communicate with its
1233 peripherals. Sub-commands allow bus enumeration, displaying and
1234 changing configuration space and a few other features.
1237 bool "pinmux - show pins muxing"
1239 default y if PINCTRL
1241 Parse all available pin-controllers and show pins muxing. This
1242 is useful for debug purpoer to check the pin muxing and to know if
1243 a pin is configured as a GPIO or as an alternate function.
1248 Poweroff/Shutdown the system
1251 bool "read - Read binary data from a partition"
1253 Provides low-level access to the data in a partition.
1255 config CMD_REMOTEPROC
1257 depends on REMOTEPROC
1259 Support for Remote Processor control
1262 bool "sata - Access SATA subsystem"
1265 SATA (Serial Advanced Technology Attachment) is a serial bus
1266 standard for connecting to hard drives and other storage devices.
1267 This command provides information about attached devices and allows
1268 reading, writing and other operations.
1270 SATA replaces PATA (originally just ATA), which stands for Parallel AT
1271 Attachment, where AT refers to an IBM AT (Advanced Technology)
1272 computer released in 1984.
1275 bool "saves - Save a file over serial in S-Record format"
1277 Provides a way to save a binary file using the Motorola S-Record
1278 format over the serial line.
1281 bool "scsi - Access to SCSI devices"
1284 This provides a 'scsi' command which provides access to SCSI (Small
1285 Computer System Interface) devices. The command provides a way to
1286 scan the bus, reset the bus, read and write data and get information
1290 bool "sdram - Print SDRAM configuration information"
1292 Provides information about attached SDRAM. This assumed that the
1293 SDRAM has an EEPROM with information that can be read using the
1294 I2C bus. This is only available on some boards.
1298 depends on DM_SPI_FLASH || SPI_FLASH
1299 default y if DM_SPI_FLASH
1304 bool "sf test - Allow testing of SPI flash"
1307 Provides a way to test that SPI flash is working correctly. The
1308 test is destructive, in that an area of SPI flash must be provided
1309 for the test to use. Performance information is also provided,
1310 measuring the performance of reading, writing and erasing in
1311 Mbps (Million Bits Per Second). This value should approximately
1312 equal the SPI bus speed for a single-bit-wide SPI bus, assuming
1313 everything is working properly.
1316 bool "sspi - Command to access spi device"
1319 SPI utility command.
1321 config DEFAULT_SPI_BUS
1322 int "default spi bus used by sspi command"
1326 config DEFAULT_SPI_MODE
1327 hex "default spi mode used by sspi command (see include/spi.h)"
1332 bool "tsi148 - Command to access tsi148 device"
1334 This provides various sub-commands to initialise and configure the
1335 Turndra tsi148 device. See the command help for full details.
1338 bool "Enable UFS - Universal Flash Subsystem commands"
1341 "This provides commands to initialise and configure universal flash
1345 bool "universe - Command to set up the Turndra Universe controller"
1347 This allows setting up the VMEbus provided by this controller.
1348 See the command help for full details.
1353 select HAVE_BLOCK_DEVICE
1359 select USB_FUNCTION_SDP
1361 Enables the command "sdp" which is used to have U-Boot emulating the
1362 Serial Download Protocol (SDP) via USB.
1366 depends on USB_FUNCTION_ROCKUSB
1368 Rockusb protocol is widely used by Rockchip SoC based devices. It can
1369 read/write info, image to/from devices. This enable rockusb command
1370 support to communication with rockusb device. for more detail about
1371 this command, please read doc/README.rockusb.
1373 config CMD_USB_MASS_STORAGE
1374 bool "UMS usb mass storage"
1375 depends on USB_GADGET_DOWNLOAD
1376 select USB_FUNCTION_MASS_STORAGE
1377 depends on BLK && USB_GADGET
1379 Enables the command "ums" and the USB mass storage support to the
1380 export a block device: U-Boot, the USB device, acts as a simple
1381 external hard drive plugged on the host USB port.
1384 bool "Xen para-virtualized block device"
1388 Xen para-virtualized block device support
1393 depends on HAVE_BLOCK_DEVICE
1396 VirtIO block device support
1402 This provides commands to control the watchdog timer devices.
1408 Enable the command "axi" for accessing AXI (Advanced eXtensible
1409 Interface) busses, a on-chip interconnect specification for managing
1410 functional blocks in SoC designs, which is also often used in designs
1411 involving FPGAs (e.g. communication with IP cores in Xilinx FPGAs).
1415 menu "Shell scripting commands"
1421 Echo args to console
1427 Return true/false on integer compare.
1433 Run script from memory
1439 Evaluate boolean and math expressions and store the result in an env
1441 Also supports loading the value at a memory location into a variable.
1442 If CONFIG_REGEX is enabled, setexpr also supports a gsub function.
1444 config CMD_SETEXPR_FMT
1446 depends on CMD_SETEXPR
1448 Evaluate format string expression and store result in an environment
1453 menu "Android support commands"
1455 config CMD_AB_SELECT
1457 depends on ANDROID_AB
1459 On Android devices with more than one boot slot (multiple copies of
1460 the kernel and system images) this provides a command to select which
1461 slot should be used to boot from and register the boot attempt. This
1462 is used by the new A/B update model where one slot is updated in the
1463 background while running from the other slot.
1470 bool "Network commands"
1480 bootp - boot image via network using BOOTP/TFTP protocol
1484 depends on CMD_BOOTP
1486 Boot image via network using DHCP/TFTP protocol
1488 config BOOTP_MAY_FAIL
1489 bool "Allow for the BOOTP/DHCP server to not be found"
1490 depends on CMD_BOOTP
1492 If the DHCP server is not found after the configured retry count, the
1493 call will fail instead of starting over. This can be used to fail
1494 over to Link-local IP address configuration if the DHCP server is not
1497 config BOOTP_BOOTPATH
1498 bool "Request & store 'rootpath' from BOOTP/DHCP server"
1500 depends on CMD_BOOTP
1502 Even though the config is called BOOTP_BOOTPATH, it stores the
1503 path in the variable 'rootpath'.
1505 config BOOTP_VENDOREX
1506 bool "Support vendor extensions from BOOTP/DHCP server"
1507 depends on CMD_BOOTP
1509 config BOOTP_BOOTFILESIZE
1510 bool "Request & store 'bootfilesize' from BOOTP/DHCP server"
1511 depends on CMD_BOOTP
1514 bool "Request & store 'dnsip' from BOOTP/DHCP server"
1516 depends on CMD_BOOTP
1518 The primary DNS server is stored as 'dnsip'. If two servers are
1519 returned, you must set BOOTP_DNS2 to store that second server IP
1523 bool "Store 'dnsip2' from BOOTP/DHCP server"
1524 depends on BOOTP_DNS
1526 If a DHCP client requests the DNS server IP from a DHCP server,
1527 it is possible that more than one DNS serverip is offered to the
1528 client. If CONFIG_BOOTP_DNS2 is enabled, the secondary DNS
1529 server IP will be stored in the additional environment
1530 variable "dnsip2". The first DNS serverip is always
1531 stored in the variable "dnsip", when BOOTP_DNS is defined.
1533 config BOOTP_GATEWAY
1534 bool "Request & store 'gatewayip' from BOOTP/DHCP server"
1536 depends on CMD_BOOTP
1538 config BOOTP_HOSTNAME
1539 bool "Request & store 'hostname' from BOOTP/DHCP server"
1541 depends on CMD_BOOTP
1543 The name may or may not be qualified with the local domain name.
1545 config BOOTP_PREFER_SERVERIP
1546 bool "serverip variable takes precedent over DHCP server IP."
1547 depends on CMD_BOOTP
1549 By default a BOOTP/DHCP reply will overwrite the 'serverip' variable.
1551 With this option enabled, the 'serverip' variable in the environment
1552 takes precedence over DHCP server IP and will only be set by the DHCP
1553 server if not already set in the environment.
1555 config BOOTP_SUBNETMASK
1556 bool "Request & store 'netmask' from BOOTP/DHCP server"
1558 depends on CMD_BOOTP
1560 config BOOTP_NISDOMAIN
1561 bool "Request & store 'nisdomain' from BOOTP/DHCP server"
1562 depends on CMD_BOOTP
1564 config BOOTP_NTPSERVER
1565 bool "Request & store 'ntpserverip' from BOOTP/DHCP server"
1566 depends on CMD_BOOTP
1568 config BOOTP_TIMEOFFSET
1569 bool "Request & store 'timeoffset' from BOOTP/DHCP server"
1570 depends on CMD_BOOTP && CMD_SNTP
1575 Selecting this will allow capturing all Ethernet packets and store
1576 them in physical memory in a PCAP formated file,
1577 later to be analyzed by PCAP reader application (IE. WireShark).
1580 bool "Send PXE client arch to BOOTP/DHCP server"
1582 depends on CMD_BOOTP && CMD_PXE
1584 Supported for ARM, ARM64, and x86 for now.
1586 config BOOTP_PXE_CLIENTARCH
1588 depends on BOOTP_PXE
1589 default 0x16 if ARM64
1593 config BOOTP_VCI_STRING
1595 depends on CMD_BOOTP
1596 default "U-Boot.armv7" if CPU_V7A || CPU_V7M || CPU_V7R
1597 default "U-Boot.armv8" if ARM64
1598 default "U-Boot.arm" if ARM
1605 tftpboot - boot image via network using TFTP protocol
1609 depends on CMD_TFTPBOOT
1611 TFTP put command, for uploading files to a server
1615 depends on CMD_TFTPBOOT
1617 Act as a TFTP server and boot the first received file
1619 config NET_TFTP_VARS
1620 bool "Control TFTP timeout and count through environment"
1621 depends on CMD_TFTPBOOT
1624 If set, allows controlling the TFTP timeout through the
1625 environment variable tftptimeout, and the TFTP maximum
1626 timeout count through the variable tftptimeoutcountmax.
1627 If unset, timeout and maximum are hard-defined as 1 second
1628 and 10 timouts per TFTP transfer.
1633 Boot image via network using RARP/TFTP protocol
1639 Boot image via network using NFS protocol.
1642 int "Timeout in milliseconds for NFS mounts"
1646 Timeout in milliseconds used in NFS protocol. If you encounter
1647 "ERROR: Cannot umount" in nfs command, try longer timeout such as
1654 If set, allows 802.3(clause 22) MII Management functions interface access
1655 The management interface specified in Clause 22 provides
1656 a simple, two signal, serial interface to connect a
1657 Station Management entity and a managed PHY for providing access
1658 to management parameters and services.
1659 The interface is referred to as the MII management interface.
1662 bool "Call mii_init() in the mii command"
1663 depends on CMD_MII && (MPC8XX_FEC || FSLDMAFE || MCFFEC)
1669 If set, allows Enable 802.3(clause 45) MDIO interface registers access
1670 The MDIO interface is orthogonal to the MII interface and extends
1671 it by adding access to more registers through indirect addressing.
1676 Send ICMP ECHO_REQUEST to network host
1681 Perform CDP network configuration
1687 Synchronize RTC via network
1692 Lookup the IP of a hostname
1694 config CMD_LINK_LOCAL
1698 Acquire a network IP address using the link-local protocol
1705 Allow control of L2 Ethernet switch commands. These are supported
1706 by the vsc9953 Ethernet driver at present. Sub-commands allow
1707 operations such as enabling / disabling a port and
1708 viewing/maintaining the filtering database (FDB)
1714 Boot image via network using PXE protocol
1719 Wait for wake-on-lan Magic Packet
1723 menu "Misc commands"
1726 bool "Enable 'bmp' command"
1727 depends on LCD || DM_VIDEO || VIDEO
1729 This provides a way to obtain information about a BMP-format image
1730 and to display it. BMP (which presumably stands for BitMaP) is a
1731 file format defined by Microsoft which supports images of various
1732 depths, formats and compression methods. Headers on the file
1733 determine the formats used. This command can be used by first loading
1734 the image into RAM, then using this command to look at it or display
1737 config CMD_BOOTCOUNT
1739 depends on BOOTCOUNT_LIMIT
1741 Enable the bootcount command, which allows interrogation and
1742 reset of the bootcounter.
1745 bool "Enable board-specific commands"
1747 (deprecated: instead, please define a Kconfig option for each command)
1749 Some boards have board-specific commands which are only enabled
1750 during developemnt and need to be turned off for production. This
1751 option provides a way to control this. The commands that are enabled
1752 vary depending on the board.
1754 config CMD_BLOCK_CACHE
1755 bool "blkcache - control and stats for block cache"
1756 depends on BLOCK_CACHE
1757 default y if BLOCK_CACHE
1759 Enable the blkcache command, which can be used to control the
1760 operation of the cache functions.
1761 This is most useful when fine-tuning the operation of the cache
1762 during development, but also allows the cache to be disabled when
1763 it might hurt performance (e.g. when using the ums command).
1770 Enable the 'button' command which allows to get the status of
1771 buttons supported by the board. The buttonss can be listed with
1772 'button list' and state can be known with 'button <label>'.
1773 Any button drivers can be controlled with this command, e.g.
1777 bool "icache or dcache"
1779 Enable the "icache" and "dcache" commands
1781 config CMD_CONITRACE
1782 bool "conitrace - trace console input codes"
1784 Enable the 'conitrace' command which displays the codes received
1785 from the console input as hexadecimal numbers.
1788 bool "Enable clear screen command 'cls'"
1789 depends on DM_VIDEO || LCD || VIDEO
1792 Enable the 'cls' command which clears the screen contents
1793 on video frame buffer.
1796 bool "efidebug - display/configure UEFI environment"
1797 depends on EFI_LOADER
1798 select EFI_DEVICE_PATH_TO_TEXT
1800 Enable the 'efidebug' command which provides a subset of UEFI
1801 shell utility with simplified functionality. It will be useful
1802 particularly for managing boot parameters as well as examining
1803 various EFI status for debugging.
1805 config CMD_EXCEPTION
1806 bool "exception - raise exception"
1807 depends on ARM || RISCV || SANDBOX || X86
1809 Enable the 'exception' command which allows to raise an exception.
1816 Enable the 'led' command which allows for control of LEDs supported
1817 by the board. The LEDs can be listed with 'led list' and controlled
1818 with led on/off/togle/blink. Any LED drivers can be controlled with
1819 this command, e.g. led_gpio.
1826 Enable the 'date' command for getting/setting the time/date in RTC
1833 Enable the 'rtc' command for low-level access to RTC devices.
1838 Run commands and summarize execution time.
1841 bool "gettime - read elapsed time"
1843 Enable the 'gettime' command which reads the elapsed time since
1844 U-Boot started running. This shows the time in seconds and
1845 milliseconds. See also the 'bootstage' command which provides more
1846 flexibility for boot timing.
1853 Print bytes from the hardware random number generator.
1855 config CMD_KASLRSEED
1859 Set the kaslr-seed in the chosen node with entropy provided by a
1860 hardware random number generator.
1866 Delay execution for some time
1869 bool "support for multiprocessor commands"
1873 This enables commands to bringup different processors
1874 in multiprocessor cases.
1879 Access the system timer.
1885 This provides basic access to the U-Boot's sound support. The main
1886 feature is to play a beep.
1888 sound init - set up sound system
1889 sound play - play a sound
1895 Boot image via local extlinux.conf file
1901 This provides access to the QEMU firmware interface. The main
1902 feature is to allow easy loading of files passed to qemu-system
1903 via -kernel / -initrd
1908 This provides access to Linux PStore with Rammoops backend. The main
1909 feature is to allow to display or save PStore records.
1911 See doc/pstore.rst for more information.
1915 config CMD_PSTORE_MEM_ADDR
1916 hex "Memory Address"
1917 depends on CMD_PSTORE
1919 Base addr used for PStore ramoops memory, should be identical to
1920 ramoops.mem_address parameter used by kernel
1922 config CMD_PSTORE_MEM_SIZE
1924 depends on CMD_PSTORE
1927 Size of PStore ramoops memory, should be identical to ramoops.mem_size
1928 parameter used by kernel, a power of 2 and larger than the sum of the
1931 config CMD_PSTORE_RECORD_SIZE
1932 hex "Dump record size"
1933 depends on CMD_PSTORE
1936 Size of each dump done on oops/panic, should be identical to
1937 ramoops.record_size parameter used by kernel and a power of 2
1940 config CMD_PSTORE_CONSOLE_SIZE
1941 hex "Kernel console log size"
1942 depends on CMD_PSTORE
1945 Size of kernel console log, should be identical to
1946 ramoops.console_size parameter used by kernel and a power of 2
1949 config CMD_PSTORE_FTRACE_SIZE
1950 hex "FTrace log size"
1951 depends on CMD_PSTORE
1954 Size of ftrace log, should be identical to ramoops.ftrace_size
1955 parameter used by kernel and a power of 2
1957 config CMD_PSTORE_PMSG_SIZE
1958 hex "User space message log size"
1959 depends on CMD_PSTORE
1962 Size of user space message log, should be identical to
1963 ramoops.pmsg_size parameter used by kernel and a power of 2
1965 config CMD_PSTORE_ECC_SIZE
1967 depends on CMD_PSTORE
1970 if non-zero, the option enables ECC support and specifies ECC buffer
1971 size in bytes (1 is a special value, means 16 bytes ECC), should be
1972 identical to ramoops.ramoops_ecc parameter used by kernel
1976 source "cmd/mvebu/Kconfig"
1979 bool "terminal - provides a way to attach a serial terminal"
1981 Provides a 'cu'-like serial terminal command. This can be used to
1982 access other serial ports from the system console. The terminal
1983 is very simple with no special processing of characters. As with
1984 cu, you can press ~. (tilde followed by period) to exit.
1987 bool "uuid, guid - generation of unique IDs"
1990 This enables two commands:
1992 uuid - generate random Universally Unique Identifier
1993 guid - generate Globally Unique Identifier based on random UUID
1995 The two commands are very similar except for the endianness of the
2000 source "cmd/ti/Kconfig"
2002 config CMD_BOOTSTAGE
2003 bool "Enable the 'bootstage' command"
2004 depends on BOOTSTAGE
2006 Add a 'bootstage' command which supports printing a report
2007 and un/stashing of bootstage data.
2009 menu "Power commands"
2011 bool "Enable Driver Model PMIC command"
2014 This is the pmic command, based on a driver model pmic's API.
2015 Command features are unchanged:
2016 - list - list pmic devices
2017 - pmic dev <id> - show or [set] operating pmic device (NEW)
2018 - pmic dump - dump registers
2019 - pmic read address - read byte of register at address
2020 - pmic write address - write byte to register at address
2021 The only one change for this command is 'dev' subcommand.
2023 config CMD_REGULATOR
2024 bool "Enable Driver Model REGULATOR command"
2025 depends on DM_REGULATOR
2027 This command is based on driver model regulator's API.
2028 User interface features:
2029 - list - list regulator devices
2030 - regulator dev <id> - show or [set] operating regulator device
2031 - regulator info - print constraints info
2032 - regulator status - print operating status
2033 - regulator value <val] <-f> - print/[set] voltage value [uV]
2034 - regulator current <val> - print/[set] current value [uA]
2035 - regulator mode <id> - print/[set] operating mode id
2036 - regulator enable - enable the regulator output
2037 - regulator disable - disable the regulator output
2039 The '-f' (force) option can be used for set the value which exceeds
2040 the limits, which are found in device-tree and are kept in regulator's
2041 uclass plat structure.
2045 menu "Security commands"
2047 bool "Enable the 'aes' command"
2050 This provides a means to encrypt and decrypt data using the AES
2051 (Advanced Encryption Standard). This algorithm uses a symetric key
2052 and is widely used as a streaming cipher. Different key lengths are
2053 supported by the algorithm but this command only supports 128 bits
2057 bool "Enable the 'blob' command"
2058 depends on !MX6ULL && !MX6SLL && !MX6SL
2059 select IMX_HAB if ARCH_MX6 || ARCH_MX7 || ARCH_MX7ULP || ARCH_IMX8M
2061 This is used with the Freescale secure boot mechanism.
2063 Freescale's SEC block has built-in Blob Protocol which provides
2064 a method for protecting user-defined data across system power
2065 cycles. SEC block protects data in a data structure called a Blob,
2066 which provides both confidentiality and integrity protection.
2068 Encapsulating data as a blob
2069 Each time that the Blob Protocol is used to protect data, a
2070 different randomly generated key is used to encrypt the data.
2071 This random key is itself encrypted using a key which is derived
2072 from SoC's non-volatile secret key and a 16 bit Key identifier.
2073 The resulting encrypted key along with encrypted data is called a
2074 blob. The non-volatile secure key is available for use only during
2077 During decapsulation, the reverse process is performed to get back
2081 blob enc - encapsulating data as a cryptgraphic blob
2082 blob dec - decapsulating cryptgraphic blob to get the data
2086 blob enc src dst len km
2088 Encapsulate and create blob of data $len bytes long
2089 at address $src and store the result at address $dst.
2090 $km is the 16 byte key modifier is also required for
2091 generation/use as key for cryptographic operation. Key
2092 modifier should be 16 byte long.
2094 blob dec src dst len km
2096 Decapsulate the blob of data at address $src and
2097 store result of $len byte at addr $dst.
2098 $km is the 16 byte key modifier is also required for
2099 generation/use as key for cryptographic operation. Key
2100 modifier should be 16 byte long.
2103 bool "Support 'hash' command"
2106 This provides a way to hash data in memory using various supported
2107 algorithms (such as SHA1, MD5, CRC32). The computed digest can be
2108 saved to memory or to an environment variable. It is also possible
2109 to verify a hash against data in memory.
2112 bool "Support the 'hvc' command"
2113 depends on ARM_SMCCC
2115 Allows issuing Hypervisor Calls (HVCs). Mostly useful for
2116 development and testing.
2119 bool "Support the 'smc' command"
2120 depends on ARM_SMCCC
2122 Allows issuing Secure Monitor Calls (SMCs). Mostly useful for
2123 development and testing.
2129 Add -v option to verify data against a hash.
2132 bool "scp03 - SCP03 enable and rotate/provision operations"
2135 This command provides access to a Trusted Application
2136 running in a TEE to request Secure Channel Protocol 03
2137 (SCP03) enablement and/or rotation of its SCP03 keys.
2146 bool "Enable the 'tpm' command"
2147 depends on TPM_V1 || TPM_V2
2148 select CMD_TPM_V1 if TPM_V1
2149 select CMD_TPM_V2 if TPM_V2
2151 This provides a means to talk to a TPM from the command line. A wide
2152 range of commands if provided - see 'tpm help' for details. The
2153 command requires a suitable TPM on your board and the correct driver
2159 bool "Enable the 'tpm test' command"
2162 This provides a a series of tests to confirm that the TPMv1.x is
2163 working correctly. The tests cover initialisation, non-volatile RAM,
2164 extend, global lock and checking that timing is within expectations.
2165 The tests pass correctly on Infineon TPMs but may need to be adjusted
2172 menu "Firmware commands"
2174 bool "Enable crosec command"
2178 Enable command-line access to the Chrome OS EC (Embedded
2179 Controller). This provides the 'crosec' command which has
2180 a number of sub-commands for performing EC tasks such as
2181 updating its flash, accessing a small saved context area
2182 and talking to the I2C bus behind the EC (if there is one).
2185 menu "Filesystem commands"
2187 bool "Enable the 'btrsubvol' command"
2190 This enables the 'btrsubvol' command to list subvolumes
2191 of a BTRFS filesystem. There are no special commands for
2192 listing BTRFS directories or loading BTRFS files - this
2193 can be done by the generic 'fs' commands (see CMD_FS_GENERIC)
2194 when BTRFS is enabled (see FS_BTRFS).
2197 bool "Enable the 'cbfs' command"
2200 Define this to enable support for reading from a Coreboot
2201 filesystem. This is a ROM-based filesystem used for accessing files
2202 on systems that use coreboot as the first boot-loader and then load
2203 U-Boot to actually boot the Operating System. Available commands are
2204 cbfsinit, cbfsinfo, cbfsls and cbfsload.
2207 bool "Enable the 'cramfs' command"
2208 depends on FS_CRAMFS
2210 This provides commands for dealing with CRAMFS (Compressed ROM
2211 filesystem). CRAMFS is useful when space is tight since files are
2212 compressed. Two commands are provided:
2214 cramfsls - lists files in a cramfs image
2215 cramfsload - loads a file from a cramfs image
2218 bool "EROFS command support"
2221 Support for the EROFS fs
2224 bool "ext2 command support"
2227 Enables EXT2 FS command
2230 bool "ext4 command support"
2233 Enables EXT4 FS command
2235 config CMD_EXT4_WRITE
2237 bool "ext4 write command support"
2240 Enables EXT4 FS write command
2243 bool "FAT command support"
2246 Support for the FAT fs
2249 bool "SquashFS command support"
2252 Enables SquashFS filesystem commands (e.g. load, ls).
2254 config CMD_FS_GENERIC
2255 bool "filesystem commands"
2257 Enables filesystem commands (e.g. load, ls) that work for multiple
2261 bool "fsuuid command"
2263 Enables fsuuid command for filesystem UUID.
2266 bool "jffs2 command"
2269 Enables commands to support the JFFS2 (Journalling Flash File System
2270 version 2) filesystem. This enables fsload, ls and fsinfo which
2271 provide the ability to load files, list directories and obtain
2272 filesystem information.
2275 string "Default device for JFFS2"
2276 depends on CMD_JFFS2
2279 The default device to use with the jffs2 command.
2281 config JFFS2_PART_OFFSET
2282 hex "Default offset within flash to locate the JFFS2 image"
2283 depends on CMD_JFFS2
2286 The default offset within flash to locate the JFFS2 image.
2288 config JFFS2_PART_SIZE
2289 hex "Default size of JFFS2 partition"
2290 depends on CMD_JFFS2
2293 The default size of the JFFS2 partition
2296 bool "MTD partition support"
2299 MTD partitioning tool support.
2300 It is strongly encouraged to avoid using this command
2301 anymore along with 'sf', 'nand', 'onenand'. One can still
2302 declare the partitions in the mtdparts environment variable
2303 but better use the MTD stack and the 'mtd' command instead.
2305 config CMD_MTDPARTS_SPREAD
2306 bool "Padd partition size to take account of bad blocks"
2307 depends on CMD_MTDPARTS
2309 This enables the 'spread' sub-command of the mtdparts command.
2310 This command will modify the existing mtdparts variable by increasing
2311 the size of the partitions such that 1) each partition's net size is
2312 at least as large as the size specified in the mtdparts variable and
2313 2) each partition starts on a good block.
2315 config CMD_MTDPARTS_SHOW_NET_SIZES
2316 bool "Show net size (w/o bad blocks) of partitions"
2317 depends on CMD_MTDPARTS
2319 Adds two columns to the printed partition table showing the
2320 effective usable size of a partition, if bad blocks are taken
2323 config MTDIDS_DEFAULT
2324 string "Default MTD IDs"
2325 depends on MTD || SPI_FLASH
2327 Defines a default MTD IDs list for use with MTD partitions in the
2328 Linux MTD command line partitions format.
2330 config MTDPARTS_DEFAULT
2331 string "Default MTD partition scheme"
2332 depends on MTD || SPI_FLASH
2334 Defines a default MTD partitioning scheme in the Linux MTD command
2335 line partitions format
2338 bool "reiser - Access to reiserfs filesystems"
2340 This provides two commands which operate on a resierfs filesystem,
2341 commonly used some years ago:
2343 reiserls - list files
2344 reiserload - load a file
2347 bool "yaffs2 - Access of YAFFS2 filesystem"
2351 This provides commands for accessing a YAFFS2 filesystem. Yet
2352 Another Flash Filesystem 2 is a filesystem designed specifically
2353 for NAND flash. It incorporates bad-block management and ensures
2354 that device writes are sequential regardless of filesystem
2358 bool "zfs - Access of ZFS filesystem"
2360 This provides commands to accessing a ZFS filesystem, commonly used
2361 on Solaris systems. Two sub-commands are provided:
2363 zfsls - list files in a directory
2364 zfsload - load a file
2366 See doc/README.zfs for more details.
2370 menu "Debug commands"
2372 config CMD_CBSYSINFO
2375 default y if SYS_COREBOOT
2377 This provides information about the coreboot sysinfo table stored in
2378 memory by coreboot before jumping to U-Boot. It can be useful for
2379 debugging the beaaviour of coreboot or U-Boot.
2382 bool "diag - Board diagnostics"
2384 This command provides access to board diagnostic tests. These are
2385 called Power-on Self Tests (POST). The command allows listing of
2386 available tests and running either all the tests, or specific tests
2390 bool "event - Show information about events"
2391 default y if EVENT_DEBUG
2393 This enables the 'event' command which provides information about
2394 events and event-handler routines. This can help to device event
2398 bool "irq - Show information about interrupts"
2399 depends on !ARM && !MIPS && !RISCV && !SH
2401 This enables two commands:
2403 interrupts - enable or disable interrupts
2404 irqinfo - print device-specific interrupt information
2407 bool "kgdb - Allow debugging of U-Boot with gdb"
2410 This enables a 'kgdb' command which allows gdb to connect to U-Boot
2411 over a serial link for debugging purposes. This allows
2412 single-stepping, inspecting variables, etc. This is supported only
2413 on PowerPC at present.
2416 bool "log - Generation, control and access to logging"
2420 This provides access to logging features. It allows the output of
2421 log data to be controlled to a limited extent (setting up the default
2422 maximum log level for emitting of records). It also provides access
2423 to a command used for testing the log system.
2426 bool "trace - Support tracing of function calls and timing"
2430 Enables a command to control using of function tracing within
2431 U-Boot. This allows recording of call traces including timing
2432 information. The command can write data to memory for exporting
2433 for analysis (e.g. using bootchart). See doc/README.trace for full
2437 bool "avb - Android Verified Boot 2.0 operations"
2438 depends on AVB_VERIFY
2440 Enables a "avb" command to perform verification of partitions using
2441 Android Verified Boot 2.0 functionality. It includes such subcommands:
2442 avb init - initialize avb2 subsystem
2443 avb read_rb - read rollback index
2444 avb write_rb - write rollback index
2445 avb is_unlocked - check device lock state
2446 avb get_uuid - read and print uuid of a partition
2447 avb read_part - read data from partition
2448 avb read_part_hex - read data from partition and output to stdout
2449 avb write_part - write data to partition
2450 avb verify - run full verification chain
2452 config CMD_STACKPROTECTOR_TEST
2453 bool "Test command for stack protector"
2454 depends on STACKPROTECTOR
2456 Enable stackprot_test command
2457 The stackprot_test command will force a stack overrun to test
2458 the stack smashing detection mechanisms.
2463 tristate "Enable UBI - Unsorted block images commands"
2466 UBI is a software layer above MTD layer which admits use of LVM-like
2467 logical volumes on top of MTD devices, hides some complexities of
2468 flash chips like wear and bad blocks and provides some other useful
2469 capabilities. Please, consult the MTD web site for more details
2470 (www.linux-mtd.infradead.org). Activate this option if you want
2471 to use U-Boot UBI commands.
2472 It is also strongly encouraged to also enable CONFIG_MTD to get full
2475 config CMD_UBI_RENAME
2476 bool "Enable rename"
2479 Enable a "ubi" command to rename ubi volume:
2480 ubi rename <oldname> <newname>
2483 tristate "Enable UBIFS - Unsorted block images filesystem commands"
2485 default y if CMD_UBI
2488 UBIFS is a file system for flash devices which works on top of UBI.
2490 config MMC_SPEED_MODE_SET
2491 bool "set speed mode using mmc command"
2495 Enable setting speed mode using mmc rescan and mmc dev commands.
2496 The speed mode is provided as the last argument in these commands
2497 and is indicated using the index from enum bus_mode in
2498 include/mmc.h. A speed mode can be set only if it has already
2499 been enabled in the device tree.
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