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
34 config CMDLINE_PS_SUPPORT
35 bool "Enable support for changing the command prompt string at run-time"
36 depends on HUSH_PARSER
38 Only static string in the prompt is supported so far. The string is
39 obtained from environment variables PS1 and PS2.
42 bool "Enable auto complete using TAB"
46 Enable auto completion of commands using TAB.
49 bool "Enable long help messages"
53 Defined when you want long help messages included
54 Do not set this option when short of memory.
58 default "Zynq> " if ARCH_ZYNQ
59 default "ZynqMP> " if ARCH_ZYNQMP
62 This string is displayed in the command line to the left of the
65 config SYS_PROMPT_HUSH_PS2
66 string "Hush shell secondary prompt"
67 depends on HUSH_PARSER
70 This defines the secondary prompt string, which is
71 printed when the command interpreter needs more input
72 to complete a command. Usually "> ".
75 int "Maximum number arguments accepted by commands"
79 int "Console input buffer size"
80 default 2048 if ARCH_TEGRA || ARCH_VERSAL || ARCH_ZYNQ || ARCH_ZYNQMP || \
81 RCAR_GEN3 || TARGET_SOCFPGA_SOC64
82 default 512 if ARCH_MX5 || ARCH_MX6 || ARCH_MX7 || FSL_LSCH2 || \
84 default 256 if M68K || PPC
88 int "Buffer size for console output"
92 bool "Command execution tracer"
96 This option enables the possiblity to print all commands before
97 executing them and after all variables are evaluated (similar
98 to Bash's xtrace/'set -x' feature).
99 To enable the tracer a variable "xtrace" needs to be defined in
114 List and dump ACPI tables. ACPI (Advanced Configuration and Power
115 Interface) is used mostly on x86 for providing information to the
116 Operating System about devices in the system. The tables are set up
117 by the firmware, typically U-Boot but possibly an earlier firmware
118 module, if U-Boot is chain-loaded from something else. ACPI tables
119 can also include code, to perform hardware-specific tasks required
120 by the Operating Systems. This allows some amount of separation
121 between the firmware and OS, and is particularly useful when you
122 want to make hardware changes without the OS needing to be adjusted.
129 List non-identity virtual-physical memory mappings for 32-bit CPUs.
142 Print ".config" contents.
144 If this option is enabled, the ".config" file contents are embedded
145 in the U-Boot image and can be printed on the console by the "config"
146 command. This provides information of which options are enabled on
153 Print console devices and information.
159 Print information about available CPUs. This normally shows the
160 number of CPUs, type (e.g. manufacturer, architecture, product or
161 internal name) and clock frequency. Other information may be
162 available depending on the CPU driver.
168 Print GPL license text
173 Provides access to the Intel Power-Management Controller (PMC) so
174 that its state can be examined. This does not currently support
175 changing the state but it is still useful for debugging and seeing
184 config CMD_TLV_EEPROM
186 depends on I2C_EEPROM
188 Display and program the system EEPROM data block in ONIE Tlvinfo
189 format. TLV stands for Type-Length-Value.
191 config SPL_CMD_TLV_EEPROM
192 bool "tlv_eeprom for SPL"
193 depends on SPL_I2C_EEPROM
194 select SPL_DRIVERS_MISC
196 Read system EEPROM data block in ONIE Tlvinfo format from SPL.
200 depends on RISCV_SMODE && SBI_V02
202 Display information about the SBI implementation.
212 Run the command stored in the environment "bootcmd", i.e.
213 "bootd" does the same thing as "run bootcmd".
219 Boot an application image from the memory.
221 config CMD_BOOTM_PRE_LOAD
222 bool "enable pre-load on bootm"
224 depends on IMAGE_PRE_LOAD
227 Enable support of stage pre-load for the bootm command.
228 This stage allow to check or modify the image provided
229 to the bootm command.
234 default y if BOOTSTD_FULL
236 Support listing available bootdevs (boot devices) which can provide an
237 OS to boot, as well as showing information about a particular one.
239 This command is not necessary for bootstd to work.
246 Support scanning for bootflows available with the bootdevs. The
247 bootflows can optionally be booted.
249 config CMD_BOOTFLOW_FULL
250 bool "bootflow - extract subcommands"
251 depends on BOOTSTD_FULL
252 default y if BOOTSTD_FULL
254 Add the ability to list the available bootflows, select one and obtain
255 information about it.
257 This command is not necessary for bootstd to work.
262 default y if BOOTSTD_FULL
264 Support listing available bootmethds (methods used to boot an
265 Operating System), as well as selecting the order that the bootmeths
268 This command is not necessary for bootstd to work.
271 bool "Support booting UEFI FIT images"
272 depends on CMD_BOOTEFI && CMD_BOOTM && FIT
275 Support booting UEFI FIT images via the bootm command.
280 Boot the Linux zImage
284 depends on ARM64 || RISCV
287 Boot an AArch64 Linux Kernel image from memory.
290 bool "Support booting Linux OS images"
291 depends on CMD_BOOTM || CMD_BOOTZ || CMD_BOOTI
294 Support booting the Linux kernel directly via a command such as bootm
298 bool "Support booting NetBSD (non-EFI) loader images"
302 Support booting NetBSD via the bootm command.
304 config BOOTM_OPENRTOS
305 bool "Support booting OPENRTOS / FreeRTOS images"
308 Support booting OPENRTOS / FreeRTOS via the bootm command.
311 bool "Support booting Enea OSE images"
312 depends on (ARM && (ARM64 || CPU_V7A || CPU_V7R) || SANDBOX || PPC || X86)
315 Support booting Enea OSE images via the bootm command.
318 bool "Support booting Plan9 OS images"
322 Support booting Plan9 images via the bootm command.
325 bool "Support booting RTEMS OS images"
329 Support booting RTEMS images via the bootm command.
332 bool "Support booting VxWorks OS images"
336 Support booting VxWorks images via the bootm command.
340 depends on EFI_LOADER
343 Boot an EFI image from memory.
345 config CMD_BOOTEFI_HELLO_COMPILE
346 bool "Compile a standard EFI hello world binary for testing"
347 depends on CMD_BOOTEFI && !CPU_V7M
350 This compiles a standard EFI hello world application with U-Boot so
351 that it can be used with the test/py testing framework. This is useful
352 for testing that EFI is working at a basic level, and for bringing
353 up EFI support on a new architecture.
355 No additional space will be required in the resulting U-Boot binary
356 when this option is enabled.
358 config CMD_BOOTEFI_HELLO
359 bool "Allow booting a standard EFI hello world for testing"
360 depends on CMD_BOOTEFI_HELLO_COMPILE
361 default y if CMD_BOOTEFI_SELFTEST
363 This adds a standard EFI hello world application to U-Boot so that
364 it can be used with the 'bootefi hello' command. This is useful
365 for testing that EFI is working at a basic level, and for bringing
366 up EFI support on a new architecture.
368 source lib/efi_selftest/Kconfig
375 Add an ANSI terminal boot menu command.
380 Android DTB/DTBO image manipulation commands. Read dtb/dtbo files from
381 image into RAM, dump image structure information, etc. Those dtb/dtbo
382 files should be merged in one dtb further, which needs to be passed to
383 the kernel, as part of a boot process.
387 depends on ANDROID_BOOT_IMAGE
389 Android Boot Image manipulation commands. Allows one to extract
390 images contained in boot.img, like kernel, ramdisk, dtb, etc, and
391 obtain corresponding meta-information from boot.img.
393 See doc/android/boot-image.rst for details.
396 bool "bootelf, bootvx"
400 Boot an ELF/vxWorks image from the memory.
403 bool "Flattened Device Tree utility commands"
407 Do FDT related setup before booting into the Operating System.
409 config SUPPORT_EXTENSION_SCAN
413 bool "Extension board management command"
415 depends on SUPPORT_EXTENSION_SCAN
417 Enables the "extension" command, which allows to detect
418 extension boards connected to the system, and apply
419 corresponding Device Tree overlays.
425 Start an application at a given address.
431 Run the command in the given environment variable.
437 Print header information for application image.
442 List all images found in flash
448 Extract a part of a multi-image.
451 bool "spl export - Export boot information for Falcon boot"
454 Falcon mode allows booting directly from SPL into an Operating
455 System such as Linux, thus skipping U-Boot proper. See
456 doc/README.falcon for full information about how to use this
459 config CMD_SPL_NAND_OFS
460 hex "Offset of OS args or dtb for Falcon-mode NAND boot"
461 depends on CMD_SPL && (TPL_NAND_SUPPORT || SPL_NAND_SUPPORT)
464 This provides the offset of the command line arguments for Linux
465 when booting from NAND in Falcon mode. See doc/README.falcon
466 for full information about how to use this option (and also see
467 board/gateworks/gw_ventana/README for an example).
469 config CMD_SPL_NOR_OFS
470 hex "Offset of OS args or dtb for Falcon-mode NOR boot"
471 depends on CMD_SPL && SPL_NOR_SUPPORT
474 This provides the offset of the command line arguments or dtb for
475 Linux when booting from NOR in Falcon mode.
477 config CMD_SPL_WRITE_SIZE
478 hex "Size of argument area"
482 This provides the size of the command-line argument area in NAND
483 flash used by Falcon-mode boot. See the documentation until CMD_SPL
486 config CMD_THOR_DOWNLOAD
487 bool "thor - TIZEN 'thor' download"
490 Implements the 'thor' download protocol. This is a way of
491 downloading a software update over USB from an attached host.
492 There is no documentation about this within the U-Boot source code
493 but you should be able to find something on the interwebs.
496 bool "zboot - x86 boot command"
498 With x86 machines it is common to boot a bzImage file which
499 contains both a kernel and a setup.bin file. The latter includes
500 configuration information from the dark ages which x86 boards still
501 need to pick things out of.
503 Consider using FIT in preference to this since it supports directly
504 booting both 32- and 64-bit kernels, as well as secure boot.
505 Documentation is available in doc/uImage.FIT/x86-fit-boot.txt
509 menu "Environment commands"
512 bool "ask for env variable"
514 Ask for environment variable
532 Edit environment variable.
537 Allow for searching environment variables
543 Save all environment variables into the compiled-in persistent
548 depends on CMD_SAVEENV
550 Erase environment variables from the compiled-in persistent
553 config CMD_ENV_EXISTS
557 Check if a variable is defined in the environment for use in
560 config CMD_ENV_CALLBACK
561 bool "env callbacks - print callbacks and their associated variables"
563 Some environment variable have callbacks defined by
564 U_BOOT_ENV_CALLBACK. These are called when the variable changes.
565 For example changing "baudrate" adjust the serial baud rate. This
566 command lists the currently defined callbacks.
569 bool "env flags -print variables that have non-default flags"
571 Some environment variables have special flags that control their
572 behaviour. For example, serial# can only be written once and cannot
573 be deleted. This command shows the variables that have special
576 config CMD_NVEDIT_EFI
577 bool "env [set|print] -e - set/print UEFI variables"
578 depends on EFI_LOADER
581 UEFI variables are encoded as some form of U-Boot variables.
582 If enabled, we are allowed to set/print UEFI variables using
583 "env" command with "-e" option without knowing details.
585 config CMD_NVEDIT_INDIRECT
586 bool "env indirect - Sets environment value from another"
588 config CMD_NVEDIT_INFO
589 bool "env info - print or evaluate environment information"
591 Print environment information:
592 - env_valid : is environment valid
593 - env_ready : is environment imported into hash table
594 - env_use_default : is default environment used
596 This command can be optionally used for evaluation in scripts:
597 [-d] : evaluate whether default environment is used
598 [-p] : evaluate whether environment can be persisted
600 The result of multiple evaluations will be combined with AND.
602 config CMD_NVEDIT_LOAD
605 Load all environment variables from the compiled-in persistent
608 config CMD_NVEDIT_SELECT
611 Select the compiled-in persistent storage of environment variables.
615 menu "Memory commands"
620 Compute binary operations (xor, or, and) of byte arrays of arbitrary
621 size from memory and store the result in memory or the environment.
625 default y if BLOBLIST
627 Show information about the bloblist, a collection of binary blobs
628 held in memory that persist between SPL and U-Boot. In the case of
629 x86 devices the bloblist can be used to hold ACPI tables so that they
630 remain available in memory.
643 Add -v option to verify data against a crc32 checksum.
646 bool "eeprom - EEPROM subsystem"
648 (deprecated, needs conversion to driver model)
649 Provides commands to read and write EEPROM (Electrically Erasable
650 Programmable Read Only Memory) chips that are connected over an
653 config CMD_EEPROM_LAYOUT
654 bool "Enable layout-aware eeprom commands"
655 depends on CMD_EEPROM
657 (deprecated, needs conversion to driver model)
658 When enabled, additional eeprom sub-commands become available.
660 eeprom print - prints the contents of the eeprom in a human-readable
661 way (eeprom layout fields, and data formatted to be fit for human
664 eeprom update - allows user to update eeprom fields by specifying
665 the field name, and providing the new data in a human readable format
666 (same format as displayed by the eeprom print command).
668 Both commands can either auto detect the layout, or be told which
672 __weak int parse_layout_version(char *str)
673 - override to provide your own layout name parsing
674 __weak void __eeprom_layout_assign(struct eeprom_layout *layout,
676 - override to setup the layout metadata based on the version
677 __weak int eeprom_layout_detect(unsigned char *data)
678 - override to provide your own algorithm for detecting layout
681 - contains various printing and updating functions for common
682 types of eeprom fields. Can be used for defining
685 config EEPROM_LAYOUT_HELP_STRING
686 string "Tells user what layout names are supported"
687 depends on CMD_EEPROM_LAYOUT
688 default "<not defined>"
690 Help printed with the LAYOUT VERSIONS part of the 'eeprom'
693 config SYS_I2C_EEPROM_BUS
694 int "I2C bus of the EEPROM device."
695 depends on CMD_EEPROM
698 config SYS_I2C_EEPROM_ADDR_LEN
699 int "Length in bytes of the EEPROM memory array address"
700 depends on CMD_EEPROM || ID_EEPROM
704 Note: This is NOT the chip address length!
706 config SYS_EEPROM_SIZE
707 depends on CMD_EEPROM
708 int "Size in bytes of the EEPROM device"
711 config SYS_EEPROM_PAGE_WRITE_BITS
712 int "Number of bits used to address bytes in a single page"
713 depends on CMD_EEPROM
716 The EEPROM page size is 2^SYS_EEPROM_PAGE_WRITE_BITS.
717 A 64 byte page, for example would require six bits.
719 config SYS_EEPROM_PAGE_WRITE_DELAY_MS
720 int "Number of milliseconds to delay between page writes"
721 depends on CMD_EEPROM || CMD_I2C
727 Infinite write loop on address range
733 Compute MD5 checksum.
737 depends on CMD_MD5SUM
739 Add -v option to verify data against an MD5 checksum.
744 Display memory information.
747 bool "md, mm, nm, mw, cp, cmp, base, loop"
752 mm - memory modify (auto-incrementing address)
753 nm - memory modify (constant address)
754 mw - memory write (fill)
757 base - print or set address offset
758 loop - initialize loop on address range
760 config CMD_MEM_SEARCH
761 bool "ms - Memory search"
763 Memory-search command
765 This allows searching through a region of memory looking for hex
766 data (byte, 16-bit word, 32-bit long, also 64-bit on machines that
767 support it). It is also possible to search for a string. The
768 command accepts a memory range and a list of values to search for.
769 The values need to appear in memory in the same order they are given
770 in the command. At most 10 matches can be returned at a time, but
771 pressing return will show the next 10 matches. Environment variables
772 are set for use with scripting (memmatches, memaddr, mempos).
775 bool "Enable cyclic md/mw commands"
776 depends on CMD_MEMORY
778 Add the "mdc" and "mwc" memory commands. These are cyclic
783 This command will print 4 bytes (10,11,12,13) each 500 ms.
785 => mwc.l 100 12345678 10
786 This command will write 12345678 to address 100 all 10 ms.
791 depends on CMD_MEMORY && (LIB_RAND || LIB_HW_RAND)
793 random - fill memory with random data
798 Simple RAM read/write test.
802 config SYS_ALT_MEMTEST
803 bool "Alternative test"
805 Use a more complete alternative memory test.
809 config SYS_ALT_MEMTEST_BITFLIP
813 The alternative memory test includes bitflip test since 2020.07.
814 The bitflip test significantly increases the overall test time.
815 Bitflip test can optionally be disabled here.
819 config SYS_MEMTEST_START
820 hex "default start address for mtest"
823 This is the default start address for mtest for simple read/write
824 test. If no arguments are given to mtest, default address is used
827 config SYS_MEMTEST_END
828 hex "default end address for mtest"
831 This is the default end address for mtest for simple read/write
832 test. If no arguments are given to mtest, default address is used
841 Compute SHA1 checksum.
843 config SHA1SUM_VERIFY
845 depends on CMD_SHA1SUM
847 Add -v option to verify data against a SHA1 checksum.
850 bool "strings - display strings in memory"
852 This works similarly to the Unix 'strings' command except that it
853 works with a memory range. String of printable characters found
854 within the range are displayed. The minimum number of characters
855 for a sequence to be considered a string can be provided.
859 menu "Compression commands"
863 default y if CMD_BOOTI
866 Support decompressing an LZMA (Lempel-Ziv-Markov chain algorithm)
871 default y if CMD_BOOTI
874 Support decompressing an LZ4 image from memory region.
878 default y if CMD_BOOTI
881 Uncompress a zip-compressed memory region.
885 select GZIP_COMPRESSED
887 Compress a memory region with zlib deflate method.
891 menu "Device access commands"
894 #depends on FLASH_CFI_DRIVER
897 ARM Ltd reference designs flash partition access
900 bool "adc - Access Analog to Digital Converters info and data"
902 depends on DM_REGULATOR
904 Shows ADC device info and permit printing one-shot analog converted
905 data from a named Analog to Digital Converter.
910 depends on PARTITIONS
912 Read/modify/write the fields of Bootloader Control Block, usually
913 stored on the flash "misc" partition with its structure defined in:
914 https://android.googlesource.com/platform/bootable/recovery/+/master/
915 bootloader_message/include/bootloader_message/bootloader_message.h
917 Some real-life use-cases include (but are not limited to):
918 - Determine the "boot reason" (and act accordingly):
919 https://source.android.com/devices/bootloader/boot-reason
920 - Get/pass a list of commands from/to recovery:
921 https://android.googlesource.com/platform/bootable/recovery
922 - Inspect/dump the contents of the BCB fields
925 bool "bind/unbind - Bind or unbind a device to/from a driver"
928 Bind or unbind a device to/from a driver from the command line.
929 This is useful in situations where a device may be handled by several
930 drivers. For example, this can be used to bind a UDC to the usb ether
931 gadget driver from the command line.
934 bool "clk - Show clock frequencies"
937 Shows clock frequences by calling a sock_clk_dump() hook function.
938 This is depreated in favour of using the CLK uclass and accessing
939 clock values from associated drivers. However currently no command
943 bool "demo - Demonstration commands for driver model"
946 Provides a 'demo' command which can be used to play around with
947 driver model. To use this properly you will need to enable one or
948 both of the demo devices (DM_DEMO_SHAPE and DM_DEMO_SIMPLE).
949 Otherwise you will always get an empty list of devices. The demo
950 devices are defined in the sandbox device tree, so the easiest
951 option is to use sandbox and pass the -d point to sandbox's
958 Enables the command "dfu" which is used to have U-Boot create a DFU
959 class device via USB. This command requires that the "dfu_alt_info"
960 environment variable be set and define the alt settings to expose to
964 bool "dm - Access to driver model information"
967 Provides access to driver model data structures and information,
968 such as a list of devices, list of uclasses and the state of each
969 device (e.g. activated). This is not required for operation, but
970 can be useful to see the state of driver model for debugging or
974 bool "fastboot - Android fastboot support"
977 This enables the command "fastboot" which enables the Android
978 fastboot mode for the platform. Fastboot is a protocol for
979 downloading images, flashing and device control used on
980 Android devices. Fastboot requires either the network stack
981 enabled or support for acting as a USB device.
983 See doc/android/fastboot.rst for more information.
986 bool "flinfo, erase, protect"
988 depends on MTD || FLASH_CFI_DRIVER || MTD_NOR_FLASH
991 flinfo - print FLASH memory information
993 protect - enable or disable FLASH write protection
1002 config CMD_FPGA_LOADBP
1003 bool "fpga loadbp - load partial bitstream (Xilinx only)"
1006 Supports loading an FPGA device from a bitstream buffer containing
1007 a partial bitstream.
1009 config CMD_FPGA_LOADFS
1010 bool "fpga loadfs - load bitstream from FAT filesystem (Xilinx only)"
1013 Supports loading an FPGA device from a FAT filesystem.
1015 config CMD_FPGA_LOADMK
1016 bool "fpga loadmk - load bitstream from image"
1019 Supports loading an FPGA device from a image generated by mkimage.
1021 config CMD_FPGA_LOADP
1022 bool "fpga loadp - load partial bitstream"
1025 Supports loading an FPGA device from a bitstream buffer containing
1026 a partial bitstream.
1028 config CMD_FPGA_LOAD_SECURE
1029 bool "fpga loads - loads secure bitstreams (Xilinx only)"
1032 Enables the fpga loads command which is used to load secure
1033 (authenticated or encrypted or both) bitstreams on to FPGA.
1036 bool "fpgad - dump FPGA registers"
1038 (legacy, needs conversion to driver model)
1039 Provides a way to dump FPGA registers by calling the board-specific
1040 fpga_get_reg() function. This functions similarly to the 'md'
1044 bool "fuse - support for the fuse subssystem"
1046 (deprecated - needs conversion to driver model)
1047 This allows reading, sensing, programming or overriding fuses
1048 which control the behaviour of the device. The command uses the
1056 config CMD_GPIO_READ
1057 bool "gpio read - save GPIO value to variable"
1060 Enables the 'gpio read' command that saves the value
1061 of a GPIO pin to a variable.
1067 Control PWM channels, this allows invert/config/enable/disable PWM channels.
1070 bool "GPT (GUID Partition Table) command"
1071 select EFI_PARTITION
1072 select HAVE_BLOCK_DEVICE
1073 select PARTITION_UUIDS
1076 Enable the 'gpt' command to ready and write GPT style partition
1080 bool "GPT Random UUID generation"
1083 Enable the generation of partitions with random UUIDs if none
1086 config CMD_GPT_RENAME
1087 bool "GPT partition renaming commands"
1090 Enables the 'gpt' command to interchange names on two GPT
1091 partitions via the 'gpt swap' command or to rename single
1092 partitions via the 'rename' command.
1095 bool "ide - Support for IDE drivers"
1098 Provides an 'ide' command which allows accessing the IDE drive,
1099 resetting the IDE interface, printing the partition table and
1100 geting device info. It also enables the 'diskboot' command which
1101 permits booting from an IDE drive.
1104 bool "io - Support for performing I/O accesses"
1106 Provides an 'iod' command to display I/O space and an 'iow' command
1107 to write values to the I/O space. This can be useful for manually
1108 checking the state of devices during boot when debugging device
1112 bool "iotrace - Support for tracing I/O activity"
1114 Provides an 'iotrace' command which supports recording I/O reads and
1115 writes in a trace buffer in memory . It also maintains a checksum
1116 of the trace records (even if space is exhausted) so that the
1117 sequence of I/O accesses can be verified.
1119 When debugging drivers it is useful to see what I/O accesses were
1120 done and in what order.
1122 Even if the individual accesses are of little interest it can be
1123 useful to verify that the access pattern is consistent each time
1124 an operation is performed. In this case a checksum can be used to
1125 characterise the operation of a driver. The checksum can be compared
1126 across different runs of the operation to verify that the driver is
1129 In particular, when performing major refactoring of the driver, where
1130 the access pattern should not change, the checksum provides assurance
1131 that the refactoring work has not broken the driver.
1133 This works by sneaking into the io.h heder for an architecture and
1134 redirecting I/O accesses through iotrace's tracing mechanism.
1136 For now no commands are provided to examine the trace buffer. The
1137 format is fairly simple, so 'md' is a reasonable substitute.
1139 Note: The checksum feature is only useful for I/O regions where the
1140 contents do not change outside of software control. Where this is not
1141 suitable you can fall back to manually comparing the addresses. It
1142 might be useful to enhance tracing to only checksum the accesses and
1143 not the data read/written.
1153 bool "w1 - Support for Dallas 1-Wire protocol"
1155 Dallas 1-wire protocol support
1161 Load a binary file over serial line.
1166 Load a binary over memory mapped.
1172 Load an S-Record file over serial line
1176 bool "lsblk - list block drivers and devices"
1178 Print list of available block device drivers, and for each, the list
1179 of known block devices.
1182 bool "MBR (Master Boot Record) command"
1183 select DOS_PARTITION
1184 select HAVE_BLOCK_DEVICE
1186 Enable the 'mbr' command to ready and write MBR (Master Boot Record)
1187 style partition tables.
1193 Enable the command "misc" for accessing miscellaneous devices with
1194 a MISC uclass driver. The command provides listing all MISC devices
1195 as well as read and write functionalities via their drivers.
1201 MMC memory mapped support.
1205 config CMD_BKOPS_ENABLE
1206 bool "mmc bkops enable"
1209 Enable command for setting manual background operations handshake
1210 on a eMMC device. The feature is optionally available on eMMC devices
1211 conforming to standard >= 4.41.
1214 bool "Enable support for RPMB in the mmc command"
1215 depends on SUPPORT_EMMC_RPMB
1217 Enable the commands for reading, writing and programming the
1218 key for the Replay Protection Memory Block partition in eMMC.
1220 config CMD_MMC_SWRITE
1222 depends on MMC_WRITE
1225 Enable support for the "mmc swrite" command to write Android sparse
1234 Enable storage cloning over block devices, useful for
1235 initial flashing by external block device without network
1238 config CMD_OPTEE_RPMB
1239 bool "Enable read/write support on RPMB via OPTEE"
1240 depends on SUPPORT_EMMC_RPMB && OPTEE
1242 Enable the commands for reading, writing persistent named values
1243 in the Replay Protection Memory Block partition in eMMC by
1244 using Persistent Objects in OPTEE
1249 select MTD_PARTITIONS
1251 MTD commands support.
1255 depends on MULTIPLEXER
1257 List, select, and deselect mux controllers on the fly.
1261 default y if NAND_SUNXI
1262 depends on MTD_RAW_NAND
1267 config CMD_NAND_TRIMFFS
1268 bool "nand write.trimffs"
1269 default y if ARCH_SUNXI
1271 Allows one to skip empty pages when flashing something on a NAND.
1273 config CMD_NAND_LOCK_UNLOCK
1274 bool "nand lock/unlock"
1276 NAND locking support.
1278 config CMD_NAND_TORTURE
1281 NAND torture support.
1290 NVM Express device support
1293 bool "onenand - access to onenand device"
1296 OneNAND is a brand of NAND ('Not AND' gate) flash which provides
1297 various useful features. This command allows reading, writing,
1298 and erasing blocks. It allso provides a way to show and change
1299 bad blocks, and test the device.
1304 Enable the 'osd' command which allows to query information from and
1305 write text data to a on-screen display (OSD) device; a virtual device
1306 associated with a display capable of displaying a text overlay on the
1307 display it's associated with..
1311 depends on PARTITIONS
1312 select HAVE_BLOCK_DEVICE
1313 select PARTITION_UUIDS
1315 Read and display information about the partition table on
1319 bool "pci - Access PCI devices"
1321 Provide access to PCI (Peripheral Interconnect Bus), a type of bus
1322 used on some devices to allow the CPU to communicate with its
1323 peripherals. Sub-commands allow bus enumeration, displaying and
1324 changing configuration space and a few other features.
1327 bool "pinmux - show pins muxing"
1329 default y if PINCTRL
1331 Parse all available pin-controllers and show pins muxing. This
1332 is useful for debug purpoer to check the pin muxing and to know if
1333 a pin is configured as a GPIO or as an alternate function.
1338 Poweroff/Shutdown the system
1341 bool "read - Read binary data from a partition"
1343 Provides low-level access to the data in a partition.
1345 config CMD_REMOTEPROC
1347 depends on REMOTEPROC
1349 Support for Remote Processor control
1352 bool "sata - Access SATA subsystem"
1355 SATA (Serial Advanced Technology Attachment) is a serial bus
1356 standard for connecting to hard drives and other storage devices.
1357 This command provides information about attached devices and allows
1358 reading, writing and other operations.
1360 SATA replaces PATA (originally just ATA), which stands for Parallel AT
1361 Attachment, where AT refers to an IBM AT (Advanced Technology)
1362 computer released in 1984.
1365 bool "saves - Save a file over serial in S-Record format"
1367 Provides a way to save a binary file using the Motorola S-Record
1368 format over the serial line.
1371 bool "scsi - Access to SCSI devices"
1374 This provides a 'scsi' command which provides access to SCSI (Small
1375 Computer System Interface) devices. The command provides a way to
1376 scan the bus, reset the bus, read and write data and get information
1380 bool "sdram - Print SDRAM configuration information"
1382 Provides information about attached SDRAM. This assumed that the
1383 SDRAM has an EEPROM with information that can be read using the
1384 I2C bus. This is only available on some boards.
1388 depends on DM_SPI_FLASH || SPI_FLASH
1389 default y if DM_SPI_FLASH
1394 bool "sf test - Allow testing of SPI flash"
1397 Provides a way to test that SPI flash is working correctly. The
1398 test is destructive, in that an area of SPI flash must be provided
1399 for the test to use. Performance information is also provided,
1400 measuring the performance of reading, writing and erasing in
1401 Mbps (Million Bits Per Second). This value should approximately
1402 equal the SPI bus speed for a single-bit-wide SPI bus, assuming
1403 everything is working properly.
1406 bool "sspi - Command to access spi device"
1409 SPI utility command.
1411 config DEFAULT_SPI_BUS
1412 int "default spi bus used by sspi command"
1416 config DEFAULT_SPI_MODE
1417 hex "default spi mode used by sspi command (see include/spi.h)"
1422 bool "tsi148 - Command to access tsi148 device"
1424 This provides various sub-commands to initialise and configure the
1425 Turndra tsi148 device. See the command help for full details.
1428 bool "Enable UFS - Universal Flash Subsystem commands"
1431 "This provides commands to initialise and configure universal flash
1435 bool "universe - Command to set up the Turndra Universe controller"
1437 This allows setting up the VMEbus provided by this controller.
1438 See the command help for full details.
1443 select HAVE_BLOCK_DEVICE
1449 select USB_FUNCTION_SDP
1451 Enables the command "sdp" which is used to have U-Boot emulating the
1452 Serial Download Protocol (SDP) via USB.
1456 depends on USB_FUNCTION_ROCKUSB
1458 Rockusb protocol is widely used by Rockchip SoC based devices. It can
1459 read/write info, image to/from devices. This enable rockusb command
1460 support to communication with rockusb device. for more detail about
1461 this command, please read doc/README.rockusb.
1463 config CMD_USB_MASS_STORAGE
1464 bool "UMS usb mass storage"
1465 depends on USB_GADGET_DOWNLOAD
1466 select USB_FUNCTION_MASS_STORAGE
1467 depends on BLK && USB_GADGET
1469 Enables the command "ums" and the USB mass storage support to the
1470 export a block device: U-Boot, the USB device, acts as a simple
1471 external hard drive plugged on the host USB port.
1474 bool "Xen para-virtualized block device"
1478 Xen para-virtualized block device support
1483 depends on HAVE_BLOCK_DEVICE
1486 VirtIO block device support
1492 This provides commands to control the watchdog timer devices.
1498 Enable the command "axi" for accessing AXI (Advanced eXtensible
1499 Interface) busses, a on-chip interconnect specification for managing
1500 functional blocks in SoC designs, which is also often used in designs
1501 involving FPGAs (e.g. communication with IP cores in Xilinx FPGAs).
1505 menu "Shell scripting commands"
1511 Echo args to console
1517 Return true/false on integer compare.
1523 Run script from memory
1529 Evaluate boolean and math expressions and store the result in an env
1531 Also supports loading the value at a memory location into a variable.
1532 If CONFIG_REGEX is enabled, setexpr also supports a gsub function.
1534 config CMD_SETEXPR_FMT
1536 depends on CMD_SETEXPR
1538 Evaluate format string expression and store result in an environment
1543 menu "Android support commands"
1545 config CMD_AB_SELECT
1547 depends on ANDROID_AB
1549 On Android devices with more than one boot slot (multiple copies of
1550 the kernel and system images) this provides a command to select which
1551 slot should be used to boot from and register the boot attempt. This
1552 is used by the new A/B update model where one slot is updated in the
1553 background while running from the other slot.
1560 bool "Network commands"
1570 bootp - boot image via network using BOOTP/TFTP protocol
1574 depends on CMD_BOOTP
1576 Boot image via network using DHCP/TFTP protocol
1578 config BOOTP_MAY_FAIL
1579 bool "Allow for the BOOTP/DHCP server to not be found"
1580 depends on CMD_BOOTP
1582 If the DHCP server is not found after the configured retry count, the
1583 call will fail instead of starting over. This can be used to fail
1584 over to Link-local IP address configuration if the DHCP server is not
1587 config BOOTP_BOOTPATH
1588 bool "Request & store 'rootpath' from BOOTP/DHCP server"
1590 depends on CMD_BOOTP
1592 Even though the config is called BOOTP_BOOTPATH, it stores the
1593 path in the variable 'rootpath'.
1595 config BOOTP_VENDOREX
1596 bool "Support vendor extensions from BOOTP/DHCP server"
1597 depends on CMD_BOOTP
1599 config BOOTP_BOOTFILESIZE
1600 bool "Request & store 'bootfilesize' from BOOTP/DHCP server"
1601 depends on CMD_BOOTP
1604 bool "Request & store 'dnsip' from BOOTP/DHCP server"
1606 depends on CMD_BOOTP
1608 The primary DNS server is stored as 'dnsip'. If two servers are
1609 returned, you must set BOOTP_DNS2 to store that second server IP
1613 bool "Store 'dnsip2' from BOOTP/DHCP server"
1614 depends on BOOTP_DNS
1616 If a DHCP client requests the DNS server IP from a DHCP server,
1617 it is possible that more than one DNS serverip is offered to the
1618 client. If CONFIG_BOOTP_DNS2 is enabled, the secondary DNS
1619 server IP will be stored in the additional environment
1620 variable "dnsip2". The first DNS serverip is always
1621 stored in the variable "dnsip", when BOOTP_DNS is defined.
1623 config BOOTP_GATEWAY
1624 bool "Request & store 'gatewayip' from BOOTP/DHCP server"
1626 depends on CMD_BOOTP
1628 config BOOTP_HOSTNAME
1629 bool "Request & store 'hostname' from BOOTP/DHCP server"
1631 depends on CMD_BOOTP
1633 The name may or may not be qualified with the local domain name.
1635 config BOOTP_PREFER_SERVERIP
1636 bool "serverip variable takes precedent over DHCP server IP."
1637 depends on CMD_BOOTP
1639 By default a BOOTP/DHCP reply will overwrite the 'serverip' variable.
1641 With this option enabled, the 'serverip' variable in the environment
1642 takes precedence over DHCP server IP and will only be set by the DHCP
1643 server if not already set in the environment.
1645 config BOOTP_SUBNETMASK
1646 bool "Request & store 'netmask' from BOOTP/DHCP server"
1648 depends on CMD_BOOTP
1650 config BOOTP_NISDOMAIN
1651 bool "Request & store 'nisdomain' from BOOTP/DHCP server"
1652 depends on CMD_BOOTP
1654 config BOOTP_NTPSERVER
1655 bool "Request & store 'ntpserverip' from BOOTP/DHCP server"
1656 depends on CMD_BOOTP
1658 config BOOTP_TIMEOFFSET
1659 bool "Request & store 'timeoffset' from BOOTP/DHCP server"
1660 depends on CMD_BOOTP && CMD_SNTP
1665 Selecting this will allow capturing all Ethernet packets and store
1666 them in physical memory in a PCAP formated file,
1667 later to be analyzed by PCAP reader application (IE. WireShark).
1670 bool "Send PXE client arch to BOOTP/DHCP server"
1672 depends on CMD_BOOTP && CMD_PXE
1674 Supported for ARM, ARM64, and x86 for now.
1676 config BOOTP_PXE_CLIENTARCH
1678 depends on BOOTP_PXE
1679 default 0x16 if ARM64
1683 config BOOTP_VCI_STRING
1685 depends on CMD_BOOTP
1686 default "U-Boot.armv7" if CPU_V7A || CPU_V7M || CPU_V7R
1687 default "U-Boot.armv8" if ARM64
1688 default "U-Boot.arm" if ARM
1695 tftpboot - boot image via network using TFTP protocol
1699 depends on CMD_TFTPBOOT
1701 TFTP put command, for uploading files to a server
1705 depends on CMD_TFTPBOOT
1707 Act as a TFTP server and boot the first received file
1709 config NET_TFTP_VARS
1710 bool "Control TFTP timeout and count through environment"
1711 depends on CMD_TFTPBOOT
1714 If set, allows controlling the TFTP timeout through the
1715 environment variable tftptimeout, and the TFTP maximum
1716 timeout count through the variable tftptimeoutcountmax.
1717 If unset, timeout and maximum are hard-defined as 1 second
1718 and 10 timouts per TFTP transfer.
1723 Boot image via network using RARP/TFTP protocol
1729 Boot image via network using NFS protocol.
1732 int "Timeout in milliseconds for NFS mounts"
1736 Timeout in milliseconds used in NFS protocol. If you encounter
1737 "ERROR: Cannot umount" in nfs command, try longer timeout such as
1740 config SYS_DISABLE_AUTOLOAD
1741 bool "Disable automatically loading files over the network"
1742 depends on CMD_BOOTP || CMD_DHCP || CMD_NFS || CMD_RARP
1744 Typically, commands such as "dhcp" will attempt to automatically
1745 load a file from the network, once the initial network configuration
1746 is complete. Enable this option to disable this behavior and instead
1747 require files to be loaded over the network by subsequent commands.
1753 If set, allows 802.3(clause 22) MII Management functions interface access
1754 The management interface specified in Clause 22 provides
1755 a simple, two signal, serial interface to connect a
1756 Station Management entity and a managed PHY for providing access
1757 to management parameters and services.
1758 The interface is referred to as the MII management interface.
1761 bool "Call mii_init() in the mii command"
1762 depends on CMD_MII && (MPC8XX_FEC || FSLDMAFE || MCFFEC)
1768 If set, allows Enable 802.3(clause 45) MDIO interface registers access
1769 The MDIO interface is orthogonal to the MII interface and extends
1770 it by adding access to more registers through indirect addressing.
1775 Send ICMP ECHO_REQUEST to network host
1780 Perform CDP network configuration
1786 Synchronize RTC via network
1791 Lookup the IP of a hostname
1793 config CMD_LINK_LOCAL
1797 Acquire a network IP address using the link-local protocol
1804 Allow control of L2 Ethernet switch commands. These are supported
1805 by the vsc9953 Ethernet driver at present. Sub-commands allow
1806 operations such as enabling / disabling a port and
1807 viewing/maintaining the filtering database (FDB)
1813 Boot image via network using PXE protocol
1818 Wait for wake-on-lan Magic Packet
1822 menu "Misc commands"
1825 bool "Enable 'bmp' command"
1826 depends on LCD || DM_VIDEO || VIDEO
1828 This provides a way to obtain information about a BMP-format image
1829 and to display it. BMP (which presumably stands for BitMaP) is a
1830 file format defined by Microsoft which supports images of various
1831 depths, formats and compression methods. Headers on the file
1832 determine the formats used. This command can be used by first loading
1833 the image into RAM, then using this command to look at it or display
1836 config CMD_BOOTCOUNT
1838 depends on BOOTCOUNT_LIMIT
1840 Enable the bootcount command, which allows interrogation and
1841 reset of the bootcounter.
1844 bool "Enable board-specific commands"
1846 (deprecated: instead, please define a Kconfig option for each command)
1848 Some boards have board-specific commands which are only enabled
1849 during developemnt and need to be turned off for production. This
1850 option provides a way to control this. The commands that are enabled
1851 vary depending on the board.
1853 config CMD_BLOCK_CACHE
1854 bool "blkcache - control and stats for block cache"
1855 depends on BLOCK_CACHE
1856 default y if BLOCK_CACHE
1858 Enable the blkcache command, which can be used to control the
1859 operation of the cache functions.
1860 This is most useful when fine-tuning the operation of the cache
1861 during development, but also allows the cache to be disabled when
1862 it might hurt performance (e.g. when using the ums command).
1869 Enable the 'button' command which allows to get the status of
1870 buttons supported by the board. The buttonss can be listed with
1871 'button list' and state can be known with 'button <label>'.
1872 Any button drivers can be controlled with this command, e.g.
1876 bool "icache or dcache"
1878 Enable the "icache" and "dcache" commands
1880 config CMD_CONITRACE
1881 bool "conitrace - trace console input codes"
1883 Enable the 'conitrace' command which displays the codes received
1884 from the console input as hexadecimal numbers.
1887 bool "Enable clear screen command 'cls'"
1888 depends on DM_VIDEO || LCD || VIDEO
1891 Enable the 'cls' command which clears the screen contents
1892 on video frame buffer.
1895 bool "efidebug - display/configure UEFI environment"
1896 depends on EFI_LOADER
1897 select EFI_DEVICE_PATH_TO_TEXT
1899 Enable the 'efidebug' command which provides a subset of UEFI
1900 shell utility with simplified functionality. It will be useful
1901 particularly for managing boot parameters as well as examining
1902 various EFI status for debugging.
1904 config CMD_EXCEPTION
1905 bool "exception - raise exception"
1906 depends on ARM || RISCV || SANDBOX || X86
1908 Enable the 'exception' command which allows to raise an exception.
1915 Enable the 'led' command which allows for control of LEDs supported
1916 by the board. The LEDs can be listed with 'led list' and controlled
1917 with led on/off/togle/blink. Any LED drivers can be controlled with
1918 this command, e.g. led_gpio.
1925 Enable the 'date' command for getting/setting the time/date in RTC
1932 Enable the 'rtc' command for low-level access to RTC devices.
1937 Run commands and summarize execution time.
1940 bool "gettime - read elapsed time"
1942 Enable the 'gettime' command which reads the elapsed time since
1943 U-Boot started running. This shows the time in seconds and
1944 milliseconds. See also the 'bootstage' command which provides more
1945 flexibility for boot timing.
1952 Print bytes from the hardware random number generator.
1954 config CMD_KASLRSEED
1958 Set the kaslr-seed in the chosen node with entropy provided by a
1959 hardware random number generator.
1965 Delay execution for some time
1968 bool "support for multiprocessor commands"
1972 This enables commands to bringup different processors
1973 in multiprocessor cases.
1978 Access the system timer.
1984 This provides basic access to the U-Boot's sound support. The main
1985 feature is to play a beep.
1987 sound init - set up sound system
1988 sound play - play a sound
1994 Boot image via local extlinux.conf file
2000 This provides access to the QEMU firmware interface. The main
2001 feature is to allow easy loading of files passed to qemu-system
2002 via -kernel / -initrd
2007 This provides access to Linux PStore with Rammoops backend. The main
2008 feature is to allow to display or save PStore records.
2010 See doc/pstore.rst for more information.
2014 config CMD_PSTORE_MEM_ADDR
2015 hex "Memory Address"
2016 depends on CMD_PSTORE
2018 Base addr used for PStore ramoops memory, should be identical to
2019 ramoops.mem_address parameter used by kernel
2021 config CMD_PSTORE_MEM_SIZE
2023 depends on CMD_PSTORE
2026 Size of PStore ramoops memory, should be identical to ramoops.mem_size
2027 parameter used by kernel, a power of 2 and larger than the sum of the
2030 config CMD_PSTORE_RECORD_SIZE
2031 hex "Dump record size"
2032 depends on CMD_PSTORE
2035 Size of each dump done on oops/panic, should be identical to
2036 ramoops.record_size parameter used by kernel and a power of 2
2039 config CMD_PSTORE_CONSOLE_SIZE
2040 hex "Kernel console log size"
2041 depends on CMD_PSTORE
2044 Size of kernel console log, should be identical to
2045 ramoops.console_size parameter used by kernel and a power of 2
2048 config CMD_PSTORE_FTRACE_SIZE
2049 hex "FTrace log size"
2050 depends on CMD_PSTORE
2053 Size of ftrace log, should be identical to ramoops.ftrace_size
2054 parameter used by kernel and a power of 2
2056 config CMD_PSTORE_PMSG_SIZE
2057 hex "User space message log size"
2058 depends on CMD_PSTORE
2061 Size of user space message log, should be identical to
2062 ramoops.pmsg_size parameter used by kernel and a power of 2
2064 config CMD_PSTORE_ECC_SIZE
2066 depends on CMD_PSTORE
2069 if non-zero, the option enables ECC support and specifies ECC buffer
2070 size in bytes (1 is a special value, means 16 bytes ECC), should be
2071 identical to ramoops.ramoops_ecc parameter used by kernel
2075 source "cmd/mvebu/Kconfig"
2078 bool "terminal - provides a way to attach a serial terminal"
2080 Provides a 'cu'-like serial terminal command. This can be used to
2081 access other serial ports from the system console. The terminal
2082 is very simple with no special processing of characters. As with
2083 cu, you can press ~. (tilde followed by period) to exit.
2086 bool "uuid, guid - generation of unique IDs"
2089 This enables two commands:
2091 uuid - generate random Universally Unique Identifier
2092 guid - generate Globally Unique Identifier based on random UUID
2094 The two commands are very similar except for the endianness of the
2099 source "cmd/ti/Kconfig"
2101 config CMD_BOOTSTAGE
2102 bool "Enable the 'bootstage' command"
2103 depends on BOOTSTAGE
2105 Add a 'bootstage' command which supports printing a report
2106 and un/stashing of bootstage data.
2108 menu "Power commands"
2110 bool "Enable Driver Model PMIC command"
2113 This is the pmic command, based on a driver model pmic's API.
2114 Command features are unchanged:
2115 - list - list pmic devices
2116 - pmic dev <id> - show or [set] operating pmic device (NEW)
2117 - pmic dump - dump registers
2118 - pmic read address - read byte of register at address
2119 - pmic write address - write byte to register at address
2120 The only one change for this command is 'dev' subcommand.
2122 config CMD_REGULATOR
2123 bool "Enable Driver Model REGULATOR command"
2124 depends on DM_REGULATOR
2126 This command is based on driver model regulator's API.
2127 User interface features:
2128 - list - list regulator devices
2129 - regulator dev <id> - show or [set] operating regulator device
2130 - regulator info - print constraints info
2131 - regulator status - print operating status
2132 - regulator value <val] <-f> - print/[set] voltage value [uV]
2133 - regulator current <val> - print/[set] current value [uA]
2134 - regulator mode <id> - print/[set] operating mode id
2135 - regulator enable - enable the regulator output
2136 - regulator disable - disable the regulator output
2138 The '-f' (force) option can be used for set the value which exceeds
2139 the limits, which are found in device-tree and are kept in regulator's
2140 uclass plat structure.
2144 menu "Security commands"
2146 bool "Enable the 'aes' command"
2149 This provides a means to encrypt and decrypt data using the AES
2150 (Advanced Encryption Standard). This algorithm uses a symetric key
2151 and is widely used as a streaming cipher. Different key lengths are
2152 supported by the algorithm but this command only supports 128 bits
2156 bool "Enable the 'blob' command"
2157 depends on !MX6ULL && !MX6SLL && !MX6SL
2158 select IMX_HAB if ARCH_MX6 || ARCH_MX7 || ARCH_MX7ULP || ARCH_IMX8M
2160 This is used with the Freescale secure boot mechanism.
2162 Freescale's SEC block has built-in Blob Protocol which provides
2163 a method for protecting user-defined data across system power
2164 cycles. SEC block protects data in a data structure called a Blob,
2165 which provides both confidentiality and integrity protection.
2167 Encapsulating data as a blob
2168 Each time that the Blob Protocol is used to protect data, a
2169 different randomly generated key is used to encrypt the data.
2170 This random key is itself encrypted using a key which is derived
2171 from SoC's non-volatile secret key and a 16 bit Key identifier.
2172 The resulting encrypted key along with encrypted data is called a
2173 blob. The non-volatile secure key is available for use only during
2176 During decapsulation, the reverse process is performed to get back
2180 blob enc - encapsulating data as a cryptgraphic blob
2181 blob dec - decapsulating cryptgraphic blob to get the data
2185 blob enc src dst len km
2187 Encapsulate and create blob of data $len bytes long
2188 at address $src and store the result at address $dst.
2189 $km is the 16 byte key modifier is also required for
2190 generation/use as key for cryptographic operation. Key
2191 modifier should be 16 byte long.
2193 blob dec src dst len km
2195 Decapsulate the blob of data at address $src and
2196 store result of $len byte at addr $dst.
2197 $km is the 16 byte key modifier is also required for
2198 generation/use as key for cryptographic operation. Key
2199 modifier should be 16 byte long.
2202 bool "Support 'hash' command"
2205 This provides a way to hash data in memory using various supported
2206 algorithms (such as SHA1, MD5, CRC32). The computed digest can be
2207 saved to memory or to an environment variable. It is also possible
2208 to verify a hash against data in memory.
2211 bool "Support the 'hvc' command"
2212 depends on ARM_SMCCC
2214 Allows issuing Hypervisor Calls (HVCs). Mostly useful for
2215 development and testing.
2218 bool "Support the 'smc' command"
2219 depends on ARM_SMCCC
2221 Allows issuing Secure Monitor Calls (SMCs). Mostly useful for
2222 development and testing.
2228 Add -v option to verify data against a hash.
2231 bool "scp03 - SCP03 enable and rotate/provision operations"
2234 This command provides access to a Trusted Application
2235 running in a TEE to request Secure Channel Protocol 03
2236 (SCP03) enablement and/or rotation of its SCP03 keys.
2245 bool "Enable the 'tpm' command"
2246 depends on TPM_V1 || TPM_V2
2247 select CMD_TPM_V1 if TPM_V1
2248 select CMD_TPM_V2 if TPM_V2
2250 This provides a means to talk to a TPM from the command line. A wide
2251 range of commands if provided - see 'tpm help' for details. The
2252 command requires a suitable TPM on your board and the correct driver
2258 bool "Enable the 'tpm test' command"
2261 This provides a a series of tests to confirm that the TPMv1.x is
2262 working correctly. The tests cover initialisation, non-volatile RAM,
2263 extend, global lock and checking that timing is within expectations.
2264 The tests pass correctly on Infineon TPMs but may need to be adjusted
2271 menu "Firmware commands"
2273 bool "Enable crosec command"
2277 Enable command-line access to the Chrome OS EC (Embedded
2278 Controller). This provides the 'crosec' command which has
2279 a number of sub-commands for performing EC tasks such as
2280 updating its flash, accessing a small saved context area
2281 and talking to the I2C bus behind the EC (if there is one).
2284 menu "Filesystem commands"
2286 bool "Enable the 'btrsubvol' command"
2289 This enables the 'btrsubvol' command to list subvolumes
2290 of a BTRFS filesystem. There are no special commands for
2291 listing BTRFS directories or loading BTRFS files - this
2292 can be done by the generic 'fs' commands (see CMD_FS_GENERIC)
2293 when BTRFS is enabled (see FS_BTRFS).
2296 bool "Enable the 'cbfs' command"
2299 Define this to enable support for reading from a Coreboot
2300 filesystem. This is a ROM-based filesystem used for accessing files
2301 on systems that use coreboot as the first boot-loader and then load
2302 U-Boot to actually boot the Operating System. Available commands are
2303 cbfsinit, cbfsinfo, cbfsls and cbfsload.
2306 bool "Enable the 'cramfs' command"
2307 depends on FS_CRAMFS
2309 This provides commands for dealing with CRAMFS (Compressed ROM
2310 filesystem). CRAMFS is useful when space is tight since files are
2311 compressed. Two commands are provided:
2313 cramfsls - lists files in a cramfs image
2314 cramfsload - loads a file from a cramfs image
2317 bool "EROFS command support"
2320 Support for the EROFS fs
2323 bool "ext2 command support"
2326 Enables EXT2 FS command
2329 bool "ext4 command support"
2332 Enables EXT4 FS command
2334 config CMD_EXT4_WRITE
2336 bool "ext4 write command support"
2339 Enables EXT4 FS write command
2342 bool "FAT command support"
2345 Support for the FAT fs
2348 bool "SquashFS command support"
2351 Enables SquashFS filesystem commands (e.g. load, ls).
2353 config CMD_FS_GENERIC
2354 bool "filesystem commands"
2356 Enables filesystem commands (e.g. load, ls) that work for multiple
2360 bool "fsuuid command"
2362 Enables fsuuid command for filesystem UUID.
2365 bool "jffs2 command"
2368 Enables commands to support the JFFS2 (Journalling Flash File System
2369 version 2) filesystem. This enables fsload, ls and fsinfo which
2370 provide the ability to load files, list directories and obtain
2371 filesystem information.
2374 string "Default device for JFFS2"
2375 depends on CMD_JFFS2
2378 The default device to use with the jffs2 command.
2380 config JFFS2_PART_OFFSET
2381 hex "Default offset within flash to locate the JFFS2 image"
2382 depends on CMD_JFFS2
2385 The default offset within flash to locate the JFFS2 image.
2387 config JFFS2_PART_SIZE
2388 hex "Default size of JFFS2 partition"
2389 depends on CMD_JFFS2
2392 The default size of the JFFS2 partition
2395 bool "MTD partition support"
2398 MTD partitioning tool support.
2399 It is strongly encouraged to avoid using this command
2400 anymore along with 'sf', 'nand', 'onenand'. One can still
2401 declare the partitions in the mtdparts environment variable
2402 but better use the MTD stack and the 'mtd' command instead.
2404 config CMD_MTDPARTS_SPREAD
2405 bool "Padd partition size to take account of bad blocks"
2406 depends on CMD_MTDPARTS
2408 This enables the 'spread' sub-command of the mtdparts command.
2409 This command will modify the existing mtdparts variable by increasing
2410 the size of the partitions such that 1) each partition's net size is
2411 at least as large as the size specified in the mtdparts variable and
2412 2) each partition starts on a good block.
2414 config CMD_MTDPARTS_SHOW_NET_SIZES
2415 bool "Show net size (w/o bad blocks) of partitions"
2416 depends on CMD_MTDPARTS
2418 Adds two columns to the printed partition table showing the
2419 effective usable size of a partition, if bad blocks are taken
2422 config MTDIDS_DEFAULT
2423 string "Default MTD IDs"
2424 depends on MTD || SPI_FLASH
2426 Defines a default MTD IDs list for use with MTD partitions in the
2427 Linux MTD command line partitions format.
2429 config MTDPARTS_DEFAULT
2430 string "Default MTD partition scheme"
2431 depends on MTD || SPI_FLASH
2433 Defines a default MTD partitioning scheme in the Linux MTD command
2434 line partitions format
2437 bool "reiser - Access to reiserfs filesystems"
2439 This provides two commands which operate on a resierfs filesystem,
2440 commonly used some years ago:
2442 reiserls - list files
2443 reiserload - load a file
2446 bool "yaffs2 - Access of YAFFS2 filesystem"
2450 This provides commands for accessing a YAFFS2 filesystem. Yet
2451 Another Flash Filesystem 2 is a filesystem designed specifically
2452 for NAND flash. It incorporates bad-block management and ensures
2453 that device writes are sequential regardless of filesystem
2457 bool "zfs - Access of ZFS filesystem"
2459 This provides commands to accessing a ZFS filesystem, commonly used
2460 on Solaris systems. Two sub-commands are provided:
2462 zfsls - list files in a directory
2463 zfsload - load a file
2465 See doc/README.zfs for more details.
2469 menu "Debug commands"
2471 config CMD_CBSYSINFO
2474 default y if SYS_COREBOOT
2476 This provides information about the coreboot sysinfo table stored in
2477 memory by coreboot before jumping to U-Boot. It can be useful for
2478 debugging the beaaviour of coreboot or U-Boot.
2481 bool "diag - Board diagnostics"
2483 This command provides access to board diagnostic tests. These are
2484 called Power-on Self Tests (POST). The command allows listing of
2485 available tests and running either all the tests, or specific tests
2489 bool "event - Show information about events"
2490 default y if EVENT_DEBUG
2492 This enables the 'event' command which provides information about
2493 events and event-handler routines. This can help to device event
2497 bool "irq - Show information about interrupts"
2498 depends on !ARM && !MIPS && !RISCV && !SH
2500 This enables two commands:
2502 interrupts - enable or disable interrupts
2503 irqinfo - print device-specific interrupt information
2506 bool "kgdb - Allow debugging of U-Boot with gdb"
2509 This enables a 'kgdb' command which allows gdb to connect to U-Boot
2510 over a serial link for debugging purposes. This allows
2511 single-stepping, inspecting variables, etc. This is supported only
2512 on PowerPC at present.
2515 bool "log - Generation, control and access to logging"
2519 This provides access to logging features. It allows the output of
2520 log data to be controlled to a limited extent (setting up the default
2521 maximum log level for emitting of records). It also provides access
2522 to a command used for testing the log system.
2525 bool "trace - Support tracing of function calls and timing"
2529 Enables a command to control using of function tracing within
2530 U-Boot. This allows recording of call traces including timing
2531 information. The command can write data to memory for exporting
2532 for analysis (e.g. using bootchart). See doc/README.trace for full
2536 bool "avb - Android Verified Boot 2.0 operations"
2537 depends on AVB_VERIFY
2539 Enables a "avb" command to perform verification of partitions using
2540 Android Verified Boot 2.0 functionality. It includes such subcommands:
2541 avb init - initialize avb2 subsystem
2542 avb read_rb - read rollback index
2543 avb write_rb - write rollback index
2544 avb is_unlocked - check device lock state
2545 avb get_uuid - read and print uuid of a partition
2546 avb read_part - read data from partition
2547 avb read_part_hex - read data from partition and output to stdout
2548 avb write_part - write data to partition
2549 avb verify - run full verification chain
2551 config CMD_STACKPROTECTOR_TEST
2552 bool "Test command for stack protector"
2553 depends on STACKPROTECTOR
2555 Enable stackprot_test command
2556 The stackprot_test command will force a stack overrun to test
2557 the stack smashing detection mechanisms.
2562 tristate "Enable UBI - Unsorted block images commands"
2565 UBI is a software layer above MTD layer which admits use of LVM-like
2566 logical volumes on top of MTD devices, hides some complexities of
2567 flash chips like wear and bad blocks and provides some other useful
2568 capabilities. Please, consult the MTD web site for more details
2569 (www.linux-mtd.infradead.org). Activate this option if you want
2570 to use U-Boot UBI commands.
2571 It is also strongly encouraged to also enable CONFIG_MTD to get full
2574 config CMD_UBI_RENAME
2575 bool "Enable rename"
2578 Enable a "ubi" command to rename ubi volume:
2579 ubi rename <oldname> <newname>
2582 tristate "Enable UBIFS - Unsorted block images filesystem commands"
2584 default y if CMD_UBI
2588 UBIFS is a file system for flash devices which works on top of UBI.
2590 config MMC_SPEED_MODE_SET
2591 bool "set speed mode using mmc command"
2595 Enable setting speed mode using mmc rescan and mmc dev commands.
2596 The speed mode is provided as the last argument in these commands
2597 and is indicated using the index from enum bus_mode in
2598 include/mmc.h. A speed mode can be set only if it has already
2599 been enabled in the device tree.
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