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"
89 default 1024 if ARCH_SUNXI
93 bool "Command execution tracer"
97 This option enables the possiblity to print all commands before
98 executing them and after all variables are evaluated (similar
99 to Bash's xtrace/'set -x' feature).
100 To enable the tracer a variable "xtrace" needs to be defined in
115 List and dump ACPI tables. ACPI (Advanced Configuration and Power
116 Interface) is used mostly on x86 for providing information to the
117 Operating System about devices in the system. The tables are set up
118 by the firmware, typically U-Boot but possibly an earlier firmware
119 module, if U-Boot is chain-loaded from something else. ACPI tables
120 can also include code, to perform hardware-specific tasks required
121 by the Operating Systems. This allows some amount of separation
122 between the firmware and OS, and is particularly useful when you
123 want to make hardware changes without the OS needing to be adjusted.
130 List non-identity virtual-physical memory mappings for 32-bit CPUs.
138 config CMD_BDINFO_EXTRA
139 bool "bdinfo extra features"
140 default y if SANDBOX || X86
142 Show additional information about the board. This uses a little more
143 code space but provides more options, particularly those useful for
144 bringup, development and debugging.
151 Print ".config" contents.
153 If this option is enabled, the ".config" file contents are embedded
154 in the U-Boot image and can be printed on the console by the "config"
155 command. This provides information of which options are enabled on
162 Print console devices and information.
168 Print information about available CPUs. This normally shows the
169 number of CPUs, type (e.g. manufacturer, architecture, product or
170 internal name) and clock frequency. Other information may be
171 available depending on the CPU driver.
173 config CMD_FWU_METADATA
174 bool "fwu metadata read"
175 depends on FWU_MULTI_BANK_UPDATE
177 Command to read the metadata and dump it's contents
181 depends on CMDLINE_EDITING
183 Show the command-line history, i.e. a list of commands that are in
190 Print GPL license text
195 Provides access to the Intel Power-Management Controller (PMC) so
196 that its state can be examined. This does not currently support
197 changing the state but it is still useful for debugging and seeing
206 config CMD_TLV_EEPROM
208 depends on I2C_EEPROM
211 Display and program the system EEPROM data block in ONIE Tlvinfo
212 format. TLV stands for Type-Length-Value.
214 config SPL_CMD_TLV_EEPROM
215 bool "tlv_eeprom for SPL"
216 depends on SPL_I2C_EEPROM
217 select SPL_DRIVERS_MISC
220 Read system EEPROM data block in ONIE Tlvinfo format from SPL.
224 depends on RISCV_SMODE && SBI_V02
226 Display information about the SBI implementation.
236 Run the command stored in the environment "bootcmd", i.e.
237 "bootd" does the same thing as "run bootcmd".
243 Boot an application image from the memory.
245 config CMD_BOOTM_PRE_LOAD
246 bool "enable pre-load on bootm"
248 depends on IMAGE_PRE_LOAD
250 Enable support of stage pre-load for the bootm command.
251 This stage allow to check or modify the image provided
252 to the bootm command.
257 default y if BOOTSTD_FULL
259 Support listing available bootdevs (boot devices) which can provide an
260 OS to boot, as well as showing information about a particular one.
262 This command is not necessary for bootstd to work.
269 Support scanning for bootflows available with the bootdevs. The
270 bootflows can optionally be booted.
272 config CMD_BOOTFLOW_FULL
273 bool "bootflow - extract subcommands"
274 depends on BOOTSTD_FULL
277 Add the ability to list the available bootflows, select one and obtain
278 information about it.
280 This command is not necessary for bootstd to work.
285 default y if BOOTSTD_FULL
287 Support listing available bootmethds (methods used to boot an
288 Operating System), as well as selecting the order that the bootmeths
291 This command is not necessary for bootstd to work.
294 bool "Support booting UEFI FIT images"
295 depends on CMD_BOOTEFI && CMD_BOOTM && FIT
298 Support booting UEFI FIT images via the bootm command.
303 Boot the Linux zImage
307 depends on ARM64 || RISCV
310 Boot an AArch64 Linux Kernel image from memory.
313 bool "Support booting Linux OS images"
314 depends on CMD_BOOTM || CMD_BOOTZ || CMD_BOOTI
317 Support booting the Linux kernel directly via a command such as bootm
321 bool "Support booting NetBSD (non-EFI) loader images"
325 Support booting NetBSD via the bootm command.
327 config BOOTM_OPENRTOS
328 bool "Support booting OPENRTOS / FreeRTOS images"
331 Support booting OPENRTOS / FreeRTOS via the bootm command.
334 bool "Support booting Enea OSE images"
335 depends on (ARM && (ARM64 || CPU_V7A || CPU_V7R) || SANDBOX || PPC || X86)
338 Support booting Enea OSE images via the bootm command.
341 bool "Support booting Plan9 OS images"
345 Support booting Plan9 images via the bootm command.
348 bool "Support booting RTEMS OS images"
352 Support booting RTEMS images via the bootm command.
355 bool "Support read SEAMA NAND images"
356 depends on MTD_RAW_NAND
358 Support reading NAND Seattle Image (SEAMA) images.
361 bool "vbe - Verified Boot for Embedded"
362 depends on BOOTMETH_VBE
363 default y if BOOTSTD_FULL
365 Provides various subcommands related to VBE, such as listing the
366 available methods, looking at the state and changing which method
367 is used to boot. Updating the parameters is not currently
371 bool "Support booting VxWorks OS images"
375 Support booting VxWorks images via the bootm command.
378 hex "Maximum size of a decompresed OS image"
379 depends on CMD_BOOTM || CMD_BOOTI || CMD_BOOTZ || \
380 LEGACY_IMAGE_FORMAT || SPL_LEGACY_IMAGE_FORMAT
381 default 0x4000000 if PPC || ARM64
382 default 0x1000000 if X86 || ARCH_MX6 || ARCH_MX7
385 This is the maximum size of the buffer that is used to decompress the OS
386 image in to, if passing a compressed image to bootm/booti/bootz.
390 depends on EFI_LOADER
393 Boot an EFI image from memory.
395 config CMD_BOOTEFI_HELLO_COMPILE
396 bool "Compile a standard EFI hello world binary for testing"
397 depends on CMD_BOOTEFI && !CPU_V7M
400 This compiles a standard EFI hello world application with U-Boot so
401 that it can be used with the test/py testing framework. This is useful
402 for testing that EFI is working at a basic level, and for bringing
403 up EFI support on a new architecture.
405 No additional space will be required in the resulting U-Boot binary
406 when this option is enabled.
408 config CMD_BOOTEFI_HELLO
409 bool "Allow booting a standard EFI hello world for testing"
410 depends on CMD_BOOTEFI_HELLO_COMPILE
411 default y if CMD_BOOTEFI_SELFTEST
413 This adds a standard EFI hello world application to U-Boot so that
414 it can be used with the 'bootefi hello' command. This is useful
415 for testing that EFI is working at a basic level, and for bringing
416 up EFI support on a new architecture.
418 source lib/efi_selftest/Kconfig
425 Add an ANSI terminal boot menu command.
430 Android DTB/DTBO image manipulation commands. Read dtb/dtbo files from
431 image into RAM, dump image structure information, etc. Those dtb/dtbo
432 files should be merged in one dtb further, which needs to be passed to
433 the kernel, as part of a boot process.
437 depends on ANDROID_BOOT_IMAGE
439 Android Boot Image manipulation commands. Allows one to extract
440 images contained in boot.img, like kernel, ramdisk, dtb, etc, and
441 obtain corresponding meta-information from boot.img.
443 See doc/android/boot-image.rst for details.
446 bool "cedit - Configuration editor"
450 Provides a command to allow editing of board configuration and
451 providing a UI for the user to adjust settings. Subcommands allow
452 loading and saving of configuration as well as showing an editor.
455 bool "bootelf, bootvx"
459 Boot an ELF/vxWorks image from the memory.
462 bool "Flattened Device Tree utility commands"
466 Do FDT related setup before booting into the Operating System.
468 config SUPPORT_EXTENSION_SCAN
472 bool "Extension board management command"
474 depends on SUPPORT_EXTENSION_SCAN
476 Enables the "extension" command, which allows to detect
477 extension boards connected to the system, and apply
478 corresponding Device Tree overlays.
484 Start an application at a given address.
490 Run the command in the given environment variable.
496 Print header information for application image.
501 List all images found in flash
507 Extract a part of a multi-image.
510 bool "spl export - Export boot information for Falcon boot"
513 Falcon mode allows booting directly from SPL into an Operating
514 System such as Linux, thus skipping U-Boot proper. See
515 doc/README.falcon for full information about how to use this
518 config CMD_SPL_NAND_OFS
519 hex "Offset of OS args or dtb for Falcon-mode NAND boot"
520 depends on CMD_SPL && (TPL_NAND_SUPPORT || SPL_NAND_SUPPORT)
523 This provides the offset of the command line arguments for Linux
524 when booting from NAND in Falcon mode. See doc/README.falcon
525 for full information about how to use this option (and also see
526 board/gateworks/gw_ventana/README for an example).
528 config CMD_SPL_NOR_OFS
529 hex "Offset of OS args or dtb for Falcon-mode NOR boot"
530 depends on CMD_SPL && SPL_NOR_SUPPORT
533 This provides the offset of the command line arguments or dtb for
534 Linux when booting from NOR in Falcon mode.
536 config CMD_SPL_WRITE_SIZE
537 hex "Size of argument area"
541 This provides the size of the command-line argument area in NAND
542 flash used by Falcon-mode boot. See the documentation until CMD_SPL
545 config CMD_THOR_DOWNLOAD
546 bool "thor - TIZEN 'thor' download"
548 select USB_FUNCTION_THOR
549 depends on USB_GADGET_DOWNLOAD
551 Implements the 'thor' download protocol. This is a way of
552 downloading a software update over USB from an attached host.
553 There is no documentation about this within the U-Boot source code
554 but you should be able to find something on the interwebs.
556 config THOR_RESET_OFF
557 bool "thor: Disable reset on completion"
558 depends on CMD_THOR_DOWNLOAD
561 bool "zboot - x86 boot command"
563 With x86 machines it is common to boot a bzImage file which
564 contains both a kernel and a setup.bin file. The latter includes
565 configuration information from the dark ages which x86 boards still
566 need to pick things out of.
568 Consider using FIT in preference to this since it supports directly
569 booting both 32- and 64-bit kernels, as well as secure boot.
570 Documentation is available in doc/uImage.FIT/x86-fit-boot.txt
574 menu "Environment commands"
577 bool "ask for env variable"
579 Ask for environment variable
597 Edit environment variable.
602 Allow for searching environment variables
608 Save all environment variables into the compiled-in persistent
613 depends on CMD_SAVEENV
615 Erase environment variables from the compiled-in persistent
618 config CMD_ENV_EXISTS
622 Check if a variable is defined in the environment for use in
625 config CMD_ENV_CALLBACK
626 bool "env callbacks - print callbacks and their associated variables"
628 Some environment variable have callbacks defined by
629 U_BOOT_ENV_CALLBACK. These are called when the variable changes.
630 For example changing "baudrate" adjust the serial baud rate. This
631 command lists the currently defined callbacks.
634 bool "env flags -print variables that have non-default flags"
636 Some environment variables have special flags that control their
637 behaviour. For example, serial# can only be written once and cannot
638 be deleted. This command shows the variables that have special
641 config CMD_NVEDIT_EFI
642 bool "env [set|print] -e - set/print UEFI variables"
643 depends on EFI_LOADER
646 UEFI variables are encoded as some form of U-Boot variables.
647 If enabled, we are allowed to set/print UEFI variables using
648 "env" command with "-e" option without knowing details.
650 config CMD_NVEDIT_INDIRECT
651 bool "env indirect - Sets environment value from another"
653 config CMD_NVEDIT_INFO
654 bool "env info - print or evaluate environment information"
656 Print environment information:
657 - env_valid : is environment valid
658 - env_ready : is environment imported into hash table
659 - env_use_default : is default environment used
661 This command can be optionally used for evaluation in scripts:
662 [-d] : evaluate whether default environment is used
663 [-p] : evaluate whether environment can be persisted
665 The result of multiple evaluations will be combined with AND.
667 config CMD_NVEDIT_LOAD
670 Load all environment variables from the compiled-in persistent
673 config CMD_NVEDIT_SELECT
676 Select the compiled-in persistent storage of environment variables.
680 menu "Memory commands"
685 Compute binary operations (xor, or, and) of byte arrays of arbitrary
686 size from memory and store the result in memory or the environment.
690 default y if BLOBLIST
692 Show information about the bloblist, a collection of binary blobs
693 held in memory that persist between SPL and U-Boot. In the case of
694 x86 devices the bloblist can be used to hold ACPI tables so that they
695 remain available in memory.
708 Add -v option to verify data against a crc32 checksum.
711 bool "eeprom - EEPROM subsystem"
713 (deprecated, needs conversion to driver model)
714 Provides commands to read and write EEPROM (Electrically Erasable
715 Programmable Read Only Memory) chips that are connected over an
718 config CMD_EEPROM_LAYOUT
719 bool "Enable layout-aware eeprom commands"
720 depends on CMD_EEPROM
722 (deprecated, needs conversion to driver model)
723 When enabled, additional eeprom sub-commands become available.
725 eeprom print - prints the contents of the eeprom in a human-readable
726 way (eeprom layout fields, and data formatted to be fit for human
729 eeprom update - allows user to update eeprom fields by specifying
730 the field name, and providing the new data in a human readable format
731 (same format as displayed by the eeprom print command).
733 Both commands can either auto detect the layout, or be told which
737 __weak int parse_layout_version(char *str)
738 - override to provide your own layout name parsing
739 __weak void __eeprom_layout_assign(struct eeprom_layout *layout,
741 - override to setup the layout metadata based on the version
742 __weak int eeprom_layout_detect(unsigned char *data)
743 - override to provide your own algorithm for detecting layout
746 - contains various printing and updating functions for common
747 types of eeprom fields. Can be used for defining
750 config EEPROM_LAYOUT_HELP_STRING
751 string "Tells user what layout names are supported"
752 depends on CMD_EEPROM_LAYOUT
753 default "<not defined>"
755 Help printed with the LAYOUT VERSIONS part of the 'eeprom'
758 config SYS_I2C_EEPROM_BUS
759 int "I2C bus of the EEPROM device."
760 depends on CMD_EEPROM
763 config SYS_I2C_EEPROM_ADDR_LEN
764 int "Length in bytes of the EEPROM memory array address"
765 depends on CMD_EEPROM || ID_EEPROM
769 Note: This is NOT the chip address length!
771 config SYS_EEPROM_SIZE
772 depends on CMD_EEPROM
773 int "Size in bytes of the EEPROM device"
776 config SYS_EEPROM_PAGE_WRITE_BITS
777 int "Number of bits used to address bytes in a single page"
778 depends on CMD_EEPROM
781 The EEPROM page size is 2^SYS_EEPROM_PAGE_WRITE_BITS.
782 A 64 byte page, for example would require six bits.
784 config SYS_EEPROM_PAGE_WRITE_DELAY_MS
785 int "Number of milliseconds to delay between page writes"
786 depends on CMD_EEPROM || CMD_I2C
792 Infinite write loop on address range
798 Compute MD5 checksum.
802 depends on CMD_MD5SUM
804 Add -v option to verify data against an MD5 checksum.
809 Display memory information.
812 bool "md, mm, nm, mw, cp, cmp, base, loop"
817 mm - memory modify (auto-incrementing address)
818 nm - memory modify (constant address)
819 mw - memory write (fill)
822 base - print or set address offset
823 loop - initialize loop on address range
825 config CMD_MEM_SEARCH
826 bool "ms - Memory search"
828 Memory-search command
830 This allows searching through a region of memory looking for hex
831 data (byte, 16-bit word, 32-bit long, also 64-bit on machines that
832 support it). It is also possible to search for a string. The
833 command accepts a memory range and a list of values to search for.
834 The values need to appear in memory in the same order they are given
835 in the command. At most 10 matches can be returned at a time, but
836 pressing return will show the next 10 matches. Environment variables
837 are set for use with scripting (memmatches, memaddr, mempos).
840 bool "Enable cyclic md/mw commands"
841 depends on CMD_MEMORY
843 Add the "mdc" and "mwc" memory commands. These are cyclic
848 This command will print 4 bytes (10,11,12,13) each 500 ms.
850 => mwc.l 100 12345678 10
851 This command will write 12345678 to address 100 all 10 ms.
856 depends on CMD_MEMORY && (LIB_RAND || LIB_HW_RAND)
858 random - fill memory with random data
863 Simple RAM read/write test.
867 config SYS_ALT_MEMTEST
868 bool "Alternative test"
870 Use a more complete alternative memory test.
874 config SYS_ALT_MEMTEST_BITFLIP
878 The alternative memory test includes bitflip test since 2020.07.
879 The bitflip test significantly increases the overall test time.
880 Bitflip test can optionally be disabled here.
884 config SYS_MEMTEST_START
885 hex "default start address for mtest"
888 This is the default start address for mtest for simple read/write
889 test. If no arguments are given to mtest, default address is used
892 config SYS_MEMTEST_END
893 hex "default end address for mtest"
896 This is the default end address for mtest for simple read/write
897 test. If no arguments are given to mtest, default address is used
906 Compute SHA1 checksum.
908 config SHA1SUM_VERIFY
910 depends on CMD_SHA1SUM
912 Add -v option to verify data against a SHA1 checksum.
915 bool "strings - display strings in memory"
917 This works similarly to the Unix 'strings' command except that it
918 works with a memory range. String of printable characters found
919 within the range are displayed. The minimum number of characters
920 for a sequence to be considered a string can be provided.
924 menu "Compression commands"
928 default y if CMD_BOOTI
931 Support decompressing an LZMA (Lempel-Ziv-Markov chain algorithm)
936 default y if CMD_BOOTI
939 Support decompressing an LZ4 image from memory region.
943 default y if CMD_BOOTI
946 Uncompress a zip-compressed memory region.
950 select GZIP_COMPRESSED
952 Compress a memory region with zlib deflate method.
956 menu "Device access commands"
959 bool "Arm FF-A test command"
960 depends on ARM_FFA_TRANSPORT
962 Provides a test command for the FF-A support
964 - Listing the partition(s) info
965 - Sending a data pattern to the specified partition
966 - Displaying the arm_ffa device info
969 #depends on FLASH_CFI_DRIVER
972 ARM Ltd reference designs flash partition access
975 bool "adc - Access Analog to Digital Converters info and data"
977 depends on DM_REGULATOR
979 Shows ADC device info and permit printing one-shot analog converted
980 data from a named Analog to Digital Converter.
985 depends on PARTITIONS
987 Read/modify/write the fields of Bootloader Control Block, usually
988 stored on the flash "misc" partition with its structure defined in:
989 https://android.googlesource.com/platform/bootable/recovery/+/master/
990 bootloader_message/include/bootloader_message/bootloader_message.h
992 Some real-life use-cases include (but are not limited to):
993 - Determine the "boot reason" (and act accordingly):
994 https://source.android.com/devices/bootloader/boot-reason
995 - Get/pass a list of commands from/to recovery:
996 https://android.googlesource.com/platform/bootable/recovery
997 - Inspect/dump the contents of the BCB fields
1000 bool "bind/unbind - Bind or unbind a device to/from a driver"
1002 default y if USB_ETHER
1004 Bind or unbind a device to/from a driver from the command line.
1005 This is useful in situations where a device may be handled by several
1006 drivers. For example, this can be used to bind a UDC to the usb ether
1007 gadget driver from the command line.
1010 bool "clk - Show clock frequencies"
1013 Shows clock frequences by calling a sock_clk_dump() hook function.
1014 This is depreated in favour of using the CLK uclass and accessing
1015 clock values from associated drivers. However currently no command
1019 bool "demo - Demonstration commands for driver model"
1022 Provides a 'demo' command which can be used to play around with
1023 driver model. To use this properly you will need to enable one or
1024 both of the demo devices (DM_DEMO_SHAPE and DM_DEMO_SIMPLE).
1025 Otherwise you will always get an empty list of devices. The demo
1026 devices are defined in the sandbox device tree, so the easiest
1027 option is to use sandbox and pass the -d point to sandbox's
1034 Enables the command "dfu" which is used to have U-Boot create a DFU
1035 class device via USB. This command requires that the "dfu_alt_info"
1036 environment variable be set and define the alt settings to expose to
1040 bool "dm - Access to driver model information"
1043 Provides access to driver model data structures and information,
1044 such as a list of devices, list of uclasses and the state of each
1045 device (e.g. activated). This is not required for operation, but
1046 can be useful to see the state of driver model for debugging or
1050 bool "fastboot - Android fastboot support"
1053 This enables the command "fastboot" which enables the Android
1054 fastboot mode for the platform. Fastboot is a protocol for
1055 downloading images, flashing and device control used on
1056 Android devices. Fastboot requires either the network stack
1057 enabled or support for acting as a USB device.
1059 See doc/android/fastboot.rst for more information.
1062 bool "flinfo, erase, protect"
1064 depends on MTD || FLASH_CFI_DRIVER || MTD_NOR_FLASH
1067 flinfo - print FLASH memory information
1068 erase - FLASH memory
1069 protect - enable or disable FLASH write protection
1078 config CMD_FPGA_LOADBP
1079 bool "fpga loadbp - load partial bitstream (Xilinx only)"
1082 Supports loading an FPGA device from a bitstream buffer containing
1083 a partial bitstream.
1085 config CMD_FPGA_LOADFS
1086 bool "fpga loadfs - load bitstream from FAT filesystem (Xilinx only)"
1089 Supports loading an FPGA device from a FAT filesystem.
1091 config CMD_FPGA_LOADMK
1092 bool "fpga loadmk - load bitstream from image"
1095 Supports loading an FPGA device from a image generated by mkimage.
1097 config CMD_FPGA_LOADP
1098 bool "fpga loadp - load partial bitstream"
1101 Supports loading an FPGA device from a bitstream buffer containing
1102 a partial bitstream.
1104 config CMD_FPGA_LOAD_SECURE
1105 bool "fpga loads - loads secure bitstreams"
1107 select FPGA_LOAD_SECURE
1109 Enables the fpga loads command which is used to load secure
1110 (authenticated or encrypted or both) bitstreams on to FPGA.
1113 bool "fpgad - dump FPGA registers"
1115 (legacy, needs conversion to driver model)
1116 Provides a way to dump FPGA registers by calling the board-specific
1117 fpga_get_reg() function. This functions similarly to the 'md'
1121 bool "fuse - support for the fuse subssystem"
1123 (deprecated - needs conversion to driver model)
1124 This allows reading, sensing, programming or overriding fuses
1125 which control the behaviour of the device. The command uses the
1133 config CMD_GPIO_READ
1134 bool "gpio read - save GPIO value to variable"
1137 Enables the 'gpio read' command that saves the value
1138 of a GPIO pin to a variable.
1144 Control PWM channels, this allows invert/config/enable/disable PWM channels.
1147 bool "GPT (GUID Partition Table) command"
1148 select EFI_PARTITION
1149 select PARTITION_UUIDS
1152 Enable the 'gpt' command to ready and write GPT style partition
1156 bool "GPT Random UUID generation"
1159 Enable the generation of partitions with random UUIDs if none
1162 config CMD_GPT_RENAME
1163 bool "GPT partition renaming commands"
1166 Enables the 'gpt' command to interchange names on two GPT
1167 partitions via the 'gpt swap' command or to rename single
1168 partitions via the 'rename' command.
1171 bool "ide - Support for IDE drivers"
1174 Provides an 'ide' command which allows accessing the IDE drive,
1175 resetting the IDE interface, printing the partition table and
1176 geting device info. It also enables the 'diskboot' command which
1177 permits booting from an IDE drive.
1180 bool "io - Support for performing I/O accesses"
1182 Provides an 'iod' command to display I/O space and an 'iow' command
1183 to write values to the I/O space. This can be useful for manually
1184 checking the state of devices during boot when debugging device
1188 bool "iotrace - Support for tracing I/O activity"
1190 Provides an 'iotrace' command which supports recording I/O reads and
1191 writes in a trace buffer in memory . It also maintains a checksum
1192 of the trace records (even if space is exhausted) so that the
1193 sequence of I/O accesses can be verified.
1195 When debugging drivers it is useful to see what I/O accesses were
1196 done and in what order.
1198 Even if the individual accesses are of little interest it can be
1199 useful to verify that the access pattern is consistent each time
1200 an operation is performed. In this case a checksum can be used to
1201 characterise the operation of a driver. The checksum can be compared
1202 across different runs of the operation to verify that the driver is
1205 In particular, when performing major refactoring of the driver, where
1206 the access pattern should not change, the checksum provides assurance
1207 that the refactoring work has not broken the driver.
1209 This works by sneaking into the io.h heder for an architecture and
1210 redirecting I/O accesses through iotrace's tracing mechanism.
1212 For now no commands are provided to examine the trace buffer. The
1213 format is fairly simple, so 'md' is a reasonable substitute.
1215 Note: The checksum feature is only useful for I/O regions where the
1216 contents do not change outside of software control. Where this is not
1217 suitable you can fall back to manually comparing the addresses. It
1218 might be useful to enhance tracing to only checksum the accesses and
1219 not the data read/written.
1229 bool "w1 - Support for Dallas 1-Wire protocol"
1231 Dallas 1-wire protocol support
1237 Load a binary file over serial line.
1242 Load a binary over memory mapped.
1245 bool "loads - Load a file over serial in S-Record format"
1248 Load an S-Record file over serial line
1251 bool "Echo all characters received during a loads back to console"
1252 depends on CMD_LOADS
1254 If enabled, all characters received during a serial download (using
1255 the "loads" command) are echoed back. This might be needed by some
1256 terminal emulations (like "cu"), but may as well just take time on
1257 others. This sets the initial value of the "loads_echo" environment
1261 bool "saves - Save a file over serial in S-Record format"
1262 depends on CMD_LOADS
1264 Provides a way to save a binary file using the Motorola S-Record
1265 format over the serial line.
1267 config SYS_LOADS_BAUD_CHANGE
1268 bool "Enable a temporary baudrate change during loads/saves command"
1269 depends on CMD_LOADS || CMD_SAVES
1271 config CMD_LOADXY_TIMEOUT
1272 int "loadxy_timeout"
1276 Initial timeout for loadx and loady commands. Zero means infinity.
1280 bool "lsblk - list block drivers and devices"
1282 Print list of available block device drivers, and for each, the list
1283 of known block devices.
1286 bool "MBR (Master Boot Record) command"
1287 select DOS_PARTITION
1289 Enable the 'mbr' command to ready and write MBR (Master Boot Record)
1290 style partition tables.
1296 Enable the command "misc" for accessing miscellaneous devices with
1297 a MISC uclass driver. The command provides listing all MISC devices
1298 as well as read and write functionalities via their drivers.
1304 MMC memory mapped support.
1308 config CMD_BKOPS_ENABLE
1309 bool "mmc bkops enable"
1312 Enable command for setting manual background operations handshake
1313 on a eMMC device. The feature is optionally available on eMMC devices
1314 conforming to standard >= 4.41.
1317 bool "Enable support for reading card registers in the mmc command"
1320 Enable the commands for reading card registers. This is useful
1321 mostly for debugging or extracting details from the card.
1324 bool "Enable support for RPMB in the mmc command"
1325 depends on SUPPORT_EMMC_RPMB
1327 Enable the commands for reading, writing and programming the
1328 key for the Replay Protection Memory Block partition in eMMC.
1330 config CMD_MMC_SWRITE
1332 depends on MMC_WRITE
1335 Enable support for the "mmc swrite" command to write Android sparse
1344 Enable storage cloning over block devices, useful for
1345 initial flashing by external block device without network
1348 config CMD_OPTEE_RPMB
1349 bool "Enable read/write support on RPMB via OPTEE"
1350 depends on SUPPORT_EMMC_RPMB && OPTEE
1352 Enable the commands for reading, writing persistent named values
1353 in the Replay Protection Memory Block partition in eMMC by
1354 using Persistent Objects in OPTEE
1359 select MTD_PARTITIONS
1361 MTD commands support.
1365 depends on MULTIPLEXER
1367 List, select, and deselect mux controllers on the fly.
1371 default y if NAND_SUNXI
1372 depends on MTD_RAW_NAND
1377 config CMD_NAND_TRIMFFS
1378 bool "nand write.trimffs"
1379 default y if ARCH_SUNXI
1381 Allows one to skip empty pages when flashing something on a NAND.
1383 config CMD_NAND_LOCK_UNLOCK
1384 bool "nand lock/unlock"
1386 NAND locking support.
1388 config CMD_NAND_TORTURE
1391 NAND torture support.
1400 NVM Express device support
1403 bool "onenand - access to onenand device"
1406 OneNAND is a brand of NAND ('Not AND' gate) flash which provides
1407 various useful features. This command allows reading, writing,
1408 and erasing blocks. It allso provides a way to show and change
1409 bad blocks, and test the device.
1411 config USE_ONENAND_BOARD_INIT
1412 bool "Call onenand_board_init() in the onenand command"
1413 depends on CMD_ONENAND
1418 Enable the 'osd' command which allows to query information from and
1419 write text data to a on-screen display (OSD) device; a virtual device
1420 associated with a display capable of displaying a text overlay on the
1421 display it's associated with..
1425 depends on PARTITIONS
1426 select PARTITION_UUIDS
1428 Read and display information about the partition table on
1432 bool "pci - Access PCI devices"
1434 Provide access to PCI (Peripheral Interconnect Bus), a type of bus
1435 used on some devices to allow the CPU to communicate with its
1436 peripherals. Sub-commands allow bus enumeration, displaying and
1437 changing configuration space and a few other features.
1440 bool "pci_mps - Configure PCI device MPS"
1443 Enables PCI Express Maximum Packet Size (MPS) tuning. This
1444 command configures the PCI Express MPS of each endpoint to the
1445 largest value supported by all devices below the root complex.
1446 The Maximum Read Request Size will not be altered. This method is
1447 the same algorithm as used by Linux pci=pcie_bus_safe.
1450 bool "pinmux - show pins muxing"
1452 default y if PINCTRL
1454 Parse all available pin-controllers and show pins muxing. This
1455 is useful for debug purpoer to check the pin muxing and to know if
1456 a pin is configured as a GPIO or as an alternate function.
1461 Poweroff/Shutdown the system
1464 bool "read - Read binary data from a partition"
1466 Provides low-level access to the data in a partition.
1468 config CMD_REMOTEPROC
1470 depends on REMOTEPROC
1472 Support for Remote Processor control
1475 bool "sata - Access SATA subsystem"
1478 SATA (Serial Advanced Technology Attachment) is a serial bus
1479 standard for connecting to hard drives and other storage devices.
1480 This command provides information about attached devices and allows
1481 reading, writing and other operations.
1483 SATA replaces PATA (originally just ATA), which stands for Parallel AT
1484 Attachment, where AT refers to an IBM AT (Advanced Technology)
1485 computer released in 1984.
1488 bool "scsi - Access to SCSI devices"
1492 This provides a 'scsi' command which provides access to SCSI (Small
1493 Computer System Interface) devices. The command provides a way to
1494 scan the bus, reset the bus, read and write data and get information
1498 bool "sdram - Print SDRAM configuration information"
1500 Provides information about attached SDRAM. This assumed that the
1501 SDRAM has an EEPROM with information that can be read using the
1502 I2C bus. This is only available on some boards.
1506 depends on DM_SPI_FLASH || SPI_FLASH
1507 default y if DM_SPI_FLASH
1512 bool "sf test - Allow testing of SPI flash"
1515 Provides a way to test that SPI flash is working correctly. The
1516 test is destructive, in that an area of SPI flash must be provided
1517 for the test to use. Performance information is also provided,
1518 measuring the performance of reading, writing and erasing in
1519 Mbps (Million Bits Per Second). This value should approximately
1520 equal the SPI bus speed for a single-bit-wide SPI bus, assuming
1521 everything is working properly.
1524 bool "sspi - Command to access spi device"
1527 SPI utility command.
1529 config DEFAULT_SPI_BUS
1530 int "default spi bus used by sspi command"
1534 config DEFAULT_SPI_MODE
1535 hex "default spi mode used by sspi command (see include/spi.h)"
1539 config CMD_TEMPERATURE
1540 bool "temperature - display the temperature from thermal sensors"
1541 depends on DM_THERMAL
1543 Provides a way to list thermal sensors and to get their readings.
1546 bool "tsi148 - Command to access tsi148 device"
1548 This provides various sub-commands to initialise and configure the
1549 Turndra tsi148 device. See the command help for full details.
1552 bool "Enable UFS - Universal Flash Subsystem commands"
1555 "This provides commands to initialise and configure universal flash
1559 bool "universe - Command to set up the Turndra Universe controller"
1561 This allows setting up the VMEbus provided by this controller.
1562 See the command help for full details.
1572 select USB_FUNCTION_SDP
1574 Enables the command "sdp" which is used to have U-Boot emulating the
1575 Serial Download Protocol (SDP) via USB.
1581 Enable the command "rkmtd" to create a virtual block device to transfer
1582 Rockchip boot block data to and from NAND with block orientated tools
1583 like "ums" and "rockusb".
1587 depends on USB_FUNCTION_ROCKUSB
1589 Rockusb protocol is widely used by Rockchip SoC based devices. It can
1590 read/write info, image to/from devices. This enable rockusb command
1591 support to communication with rockusb device. for more detail about
1592 this command, please read doc/README.rockusb.
1594 config CMD_USB_MASS_STORAGE
1595 bool "UMS usb mass storage"
1596 depends on USB_GADGET_DOWNLOAD
1597 select USB_FUNCTION_MASS_STORAGE
1598 depends on BLK && USB_GADGET
1600 Enables the command "ums" and the USB mass storage support to the
1601 export a block device: U-Boot, the USB device, acts as a simple
1602 external hard drive plugged on the host USB port.
1604 config CMD_UMS_ABORT_KEYED
1605 bool "UMS abort with any key"
1606 depends on CMD_USB_MASS_STORAGE
1608 Allow interruption of usb mass storage run with any key pressed.
1611 bool "Xen para-virtualized block device"
1615 Xen para-virtualized block device support
1622 VirtIO block device support
1628 This provides commands to control the watchdog timer devices.
1631 bool "write - Write binary data to a partition"
1633 Provides low-level write access to a partition.
1639 Enable the command "axi" for accessing AXI (Advanced eXtensible
1640 Interface) busses, a on-chip interconnect specification for managing
1641 functional blocks in SoC designs, which is also often used in designs
1642 involving FPGAs (e.g. communication with IP cores in Xilinx FPGAs).
1646 menu "Shell scripting commands"
1651 Print file to standard output
1657 Echo args to console
1663 Return true/false on integer compare.
1669 Run script from memory
1675 Evaluate boolean and math expressions and store the result in an env
1677 Also supports loading the value at a memory location into a variable.
1678 If CONFIG_REGEX is enabled, setexpr also supports a gsub function.
1680 config CMD_SETEXPR_FMT
1682 depends on CMD_SETEXPR
1684 Evaluate format string expression and store result in an environment
1690 Print file as hexdump to standard output
1694 menu "Android support commands"
1696 config CMD_AB_SELECT
1698 depends on ANDROID_AB
1700 On Android devices with more than one boot slot (multiple copies of
1701 the kernel and system images) this provides a command to select which
1702 slot should be used to boot from and register the boot attempt. This
1703 is used by the new A/B update model where one slot is updated in the
1704 background while running from the other slot.
1711 bool "Network commands"
1721 bootp - boot image via network using BOOTP/TFTP protocol
1725 depends on CMD_BOOTP
1727 Boot image via network using DHCP/TFTP protocol
1733 Boot image via network using DHCPv6/TFTP protocol using IPv6.
1735 Will perform 4-message exchange with DHCPv6 server, requesting
1736 the minimum required options to TFTP boot. Complies with RFC 8415.
1738 config BOOTP_MAY_FAIL
1739 bool "Allow for the BOOTP/DHCP server to not be found"
1740 depends on CMD_BOOTP
1742 If the DHCP server is not found after the configured retry count, the
1743 call will fail instead of starting over. This can be used to fail
1744 over to Link-local IP address configuration if the DHCP server is not
1747 config BOOTP_BOOTPATH
1748 bool "Request & store 'rootpath' from BOOTP/DHCP server"
1750 depends on CMD_BOOTP
1752 Even though the config is called BOOTP_BOOTPATH, it stores the
1753 path in the variable 'rootpath'.
1755 config BOOTP_VENDOREX
1756 bool "Support vendor extensions from BOOTP/DHCP server"
1757 depends on CMD_BOOTP
1759 config BOOTP_BOOTFILESIZE
1760 bool "Request & store 'bootfilesize' from BOOTP/DHCP server"
1761 depends on CMD_BOOTP
1764 bool "Request & store 'dnsip' from BOOTP/DHCP server"
1766 depends on CMD_BOOTP
1768 The primary DNS server is stored as 'dnsip'. If two servers are
1769 returned, you must set BOOTP_DNS2 to store that second server IP
1773 bool "Store 'dnsip2' from BOOTP/DHCP server"
1774 depends on BOOTP_DNS
1776 If a DHCP client requests the DNS server IP from a DHCP server,
1777 it is possible that more than one DNS serverip is offered to the
1778 client. If CONFIG_BOOTP_DNS2 is enabled, the secondary DNS
1779 server IP will be stored in the additional environment
1780 variable "dnsip2". The first DNS serverip is always
1781 stored in the variable "dnsip", when BOOTP_DNS is defined.
1783 config BOOTP_GATEWAY
1784 bool "Request & store 'gatewayip' from BOOTP/DHCP server"
1786 depends on CMD_BOOTP
1788 config BOOTP_HOSTNAME
1789 bool "Request & store 'hostname' from BOOTP/DHCP server"
1791 depends on CMD_BOOTP
1793 The name may or may not be qualified with the local domain name.
1795 config BOOTP_PREFER_SERVERIP
1796 bool "serverip variable takes precedent over DHCP server IP."
1797 depends on CMD_BOOTP
1799 By default a BOOTP/DHCP reply will overwrite the 'serverip' variable.
1801 With this option enabled, the 'serverip' variable in the environment
1802 takes precedence over DHCP server IP and will only be set by the DHCP
1803 server if not already set in the environment.
1805 config BOOTP_SUBNETMASK
1806 bool "Request & store 'netmask' from BOOTP/DHCP server"
1808 depends on CMD_BOOTP
1810 config BOOTP_NISDOMAIN
1811 bool "Request & store 'nisdomain' from BOOTP/DHCP server"
1812 depends on CMD_BOOTP
1814 config BOOTP_NTPSERVER
1815 bool "Request & store 'ntpserverip' from BOOTP/DHCP server"
1816 depends on CMD_BOOTP
1818 config BOOTP_TIMEOFFSET
1819 bool "Request & store 'timeoffset' from BOOTP/DHCP server"
1820 depends on CMD_BOOTP && CMD_SNTP
1825 Selecting this will allow capturing all Ethernet packets and store
1826 them in physical memory in a PCAP formated file,
1827 later to be analyzed by PCAP reader application (IE. WireShark).
1830 bool "Send PXE client arch to BOOTP/DHCP server"
1832 depends on CMD_BOOTP && CMD_PXE
1834 Supported for ARM, ARM64, and x86 for now.
1836 config BOOTP_PXE_CLIENTARCH
1838 depends on BOOTP_PXE
1839 default 0x16 if ARM64
1843 config BOOTP_PXE_DHCP_OPTION
1844 bool "Request & store 'pxe_configfile' from BOOTP/DHCP server"
1845 depends on BOOTP_PXE
1847 config BOOTP_VCI_STRING
1849 depends on CMD_BOOTP
1850 default "U-Boot.armv7" if CPU_V7A || CPU_V7M || CPU_V7R
1851 default "U-Boot.armv8" if ARM64
1852 default "U-Boot.arm" if ARM
1857 config DHCP6_PXE_CLIENTARCH
1859 default 0x16 if ARM64
1863 config DHCP6_PXE_DHCP_OPTION
1864 bool "Request & store 'pxe_configfile' from DHCP6 server"
1866 config DHCP6_ENTERPRISE_ID
1867 int "Enterprise ID to send in DHCPv6 Vendor Class Option"
1876 tftpboot - load file via network using TFTP protocol
1880 depends on CMD_TFTPBOOT
1882 TFTP put command, for uploading files to a server
1886 depends on CMD_TFTPBOOT
1888 Act as a TFTP server and boot the first received file
1890 config NET_TFTP_VARS
1891 bool "Control TFTP timeout and count through environment"
1892 depends on CMD_TFTPBOOT
1895 If set, allows controlling the TFTP timeout through the
1896 environment variable tftptimeout, and the TFTP maximum
1897 timeout count through the variable tftptimeoutcountmax.
1898 If unset, timeout and maximum are hard-defined as 1 second
1899 and 10 timouts per TFTP transfer.
1904 Boot image via network using RARP/TFTP protocol
1909 Boot image via network using NFS protocol.
1912 int "Timeout in milliseconds for NFS mounts"
1916 Timeout in milliseconds used in NFS protocol. If you encounter
1917 "ERROR: Cannot umount" in nfs command, try longer timeout such as
1920 config SYS_DISABLE_AUTOLOAD
1921 bool "Disable automatically loading files over the network"
1922 depends on CMD_BOOTP || CMD_DHCP || CMD_NFS || CMD_RARP
1924 Typically, commands such as "dhcp" will attempt to automatically
1925 load a file from the network, once the initial network configuration
1926 is complete. Enable this option to disable this behavior and instead
1927 require files to be loaded over the network by subsequent commands.
1933 wget is a simple command to download kernel, or other files,
1934 from a http server over TCP.
1940 If set, allows 802.3(clause 22) MII Management functions interface access
1941 The management interface specified in Clause 22 provides
1942 a simple, two signal, serial interface to connect a
1943 Station Management entity and a managed PHY for providing access
1944 to management parameters and services.
1945 The interface is referred to as the MII management interface.
1948 bool "Call mii_init() in the mii command"
1949 depends on CMD_MII && (MPC8XX_FEC || FSLDMAFE || MCFFEC)
1955 If set, allows Enable 802.3(clause 45) MDIO interface registers access
1956 The MDIO interface is orthogonal to the MII interface and extends
1957 it by adding access to more registers through indirect addressing.
1962 Send ICMP ECHO_REQUEST to network host
1967 default y if (CMD_PING && IPV6)
1969 Send ICMPv6 ECHO_REQUEST to network host
1974 Perform CDP network configuration
1980 Synchronize RTC via network
1985 Lookup the IP of a hostname
1987 config CMD_LINK_LOCAL
1991 Acquire a network IP address using the link-local protocol
1997 Manually configure the attached NIC via NC-SI.
1998 Normally this happens automatically before other network
2001 config IPV6_ROUTER_DISCOVERY
2002 bool "Do IPv6 router discovery"
2005 Will automatically perform router solicitation on first IPv6
2012 Allow control of L2 Ethernet switch commands. These are supported
2013 by the vsc9953 Ethernet driver at present. Sub-commands allow
2014 operations such as enabling / disabling a port and
2015 viewing/maintaining the filtering database (FDB)
2021 Boot image via network using PXE protocol
2026 Wait for wake-on-lan Magic Packet
2030 menu "Misc commands"
2035 This is a simple sliding block puzzle game designed by Italian web
2036 developer Gabriele Cirulli. The game's objective is to slide numbered
2037 tiles on a grid to combine them to create a tile with the number
2040 This needs ANSI support on your terminal to work. It is not fully
2041 functional on a video device.
2044 bool "Enable 'bmp' command"
2048 This provides a way to obtain information about a BMP-format image
2049 and to display it. BMP (which presumably stands for BitMaP) is a
2050 file format defined by Microsoft which supports images of various
2051 depths, formats and compression methods. Headers on the file
2052 determine the formats used. This command can be used by first loading
2053 the image into RAM, then using this command to look at it or display
2056 config CMD_BOOTCOUNT
2058 depends on BOOTCOUNT_LIMIT
2060 Enable the bootcount command, which allows interrogation and
2061 reset of the bootcounter.
2064 bool "Enable board-specific commands"
2066 (deprecated: instead, please define a Kconfig option for each command)
2068 Some boards have board-specific commands which are only enabled
2069 during developemnt and need to be turned off for production. This
2070 option provides a way to control this. The commands that are enabled
2071 vary depending on the board.
2073 config CMD_BLOCK_CACHE
2074 bool "blkcache - control and stats for block cache"
2075 depends on BLOCK_CACHE
2076 default y if BLOCK_CACHE
2078 Enable the blkcache command, which can be used to control the
2079 operation of the cache functions.
2080 This is most useful when fine-tuning the operation of the cache
2081 during development, but also allows the cache to be disabled when
2082 it might hurt performance (e.g. when using the ums command).
2085 bool "blkmap - Composable virtual block devices"
2089 Create virtual block devices that are backed by various sources,
2090 e.g. RAM, or parts of an existing block device. Though much more
2091 rudimentary, it borrows a lot of ideas from Linux's device mapper
2095 - Treat a region of RAM as a block device, i.e. a RAM disk. This let's
2096 you extract files from filesystem images stored in RAM (perhaps as a
2097 result of a TFTP transfer).
2098 - Create a virtual partition on an existing device. This let's you
2099 access filesystems that aren't stored at an exact partition
2100 boundary. A common example is a filesystem image embedded in an FIT
2108 Enable the 'button' command which allows to get the status of
2109 buttons supported by the board. The buttonss can be listed with
2110 'button list' and state can be known with 'button <label>'.
2111 Any button drivers can be controlled with this command, e.g.
2115 bool "icache or dcache"
2117 Enable the "icache" and "dcache" commands
2119 config CMD_CONITRACE
2120 bool "conitrace - trace console input codes"
2122 Enable the 'conitrace' command which displays the codes received
2123 from the console input as hexadecimal numbers.
2126 bool "Enable clear screen command 'cls'"
2127 default y if LCD || VIDEO
2129 Enable the 'cls' command which clears the screen contents
2130 on video frame buffer.
2133 bool "efidebug - display/configure UEFI environment"
2134 depends on EFI_LOADER
2135 select EFI_DEVICE_PATH_TO_TEXT
2137 Enable the 'efidebug' command which provides a subset of UEFI
2138 shell utility with simplified functionality. It will be useful
2139 particularly for managing boot parameters as well as examining
2140 various EFI status for debugging.
2142 config CMD_EFICONFIG
2143 bool "eficonfig - provide menu-driven uefi variables maintenance interface"
2144 default y if !HAS_BOARD_SIZE_LIMIT
2145 depends on CMD_BOOTEFI_BOOTMGR
2148 Enable the 'eficonfig' command which provides the menu-driven UEFI
2149 variable maintenance interface.
2151 config CMD_EXCEPTION
2152 bool "exception - raise exception"
2153 depends on ARM || RISCV || SANDBOX || X86
2155 Enable the 'exception' command which allows to raise an exception.
2162 Enable the 'led' command which allows for control of LEDs supported
2163 by the board. The LEDs can be listed with 'led list' and controlled
2164 with led on/off/togle/blink. Any LED drivers can be controlled with
2165 this command, e.g. led_gpio.
2170 Enable the 'ini' command which allows a .ini file to be parsed and
2171 placed into environment variables. Please check the source code for
2172 this as there is no documentation.
2179 Enable the 'date' command for getting/setting the time/date in RTC
2186 Enable the 'rtc' command for low-level access to RTC devices.
2191 Run commands and summarize execution time.
2194 bool "gettime - read elapsed time"
2196 Enable the 'gettime' command which reads the elapsed time since
2197 U-Boot started running. This shows the time in seconds and
2198 milliseconds. See also the 'bootstage' command which provides more
2199 flexibility for boot timing.
2202 bool "pause command"
2204 Delay execution waiting for any user input.
2205 Useful to allow the user to read a failure log.
2210 default y if SANDBOX
2213 Print bytes from the hardware random number generator.
2215 config CMD_KASLRSEED
2219 Set the kaslr-seed in the chosen node with entropy provided by a
2220 hardware random number generator.
2226 Delay execution for some time
2229 bool "support for multiprocessor commands"
2233 This enables commands to bringup different processors
2234 in multiprocessor cases.
2239 Access the system timer.
2245 This provides basic access to the U-Boot's sound support. The main
2246 feature is to play a beep.
2248 sound init - set up sound system
2249 sound play - play a sound
2255 Boot image via local extlinux.conf file
2261 This provides access to the QEMU firmware interface. The main
2262 feature is to allow easy loading of files passed to qemu-system
2263 via -kernel / -initrd
2268 This provides access to Linux PStore with Rammoops backend. The main
2269 feature is to allow to display or save PStore records.
2271 See doc/pstore.rst for more information.
2275 config CMD_PSTORE_MEM_ADDR
2276 hex "Memory Address"
2277 depends on CMD_PSTORE
2279 Base addr used for PStore ramoops memory, should be identical to
2280 ramoops.mem_address parameter used by kernel
2282 config CMD_PSTORE_MEM_SIZE
2284 depends on CMD_PSTORE
2287 Size of PStore ramoops memory, should be identical to ramoops.mem_size
2288 parameter used by kernel, a power of 2 and larger than the sum of the
2291 config CMD_PSTORE_RECORD_SIZE
2292 hex "Dump record size"
2293 depends on CMD_PSTORE
2296 Size of each dump done on oops/panic, should be identical to
2297 ramoops.record_size parameter used by kernel and a power of 2
2300 config CMD_PSTORE_CONSOLE_SIZE
2301 hex "Kernel console log size"
2302 depends on CMD_PSTORE
2305 Size of kernel console log, should be identical to
2306 ramoops.console_size parameter used by kernel and a power of 2
2309 config CMD_PSTORE_FTRACE_SIZE
2310 hex "FTrace log size"
2311 depends on CMD_PSTORE
2314 Size of ftrace log, should be identical to ramoops.ftrace_size
2315 parameter used by kernel and a power of 2
2317 config CMD_PSTORE_PMSG_SIZE
2318 hex "User space message log size"
2319 depends on CMD_PSTORE
2322 Size of user space message log, should be identical to
2323 ramoops.pmsg_size parameter used by kernel and a power of 2
2325 config CMD_PSTORE_ECC_SIZE
2327 depends on CMD_PSTORE
2330 if non-zero, the option enables ECC support and specifies ECC buffer
2331 size in bytes (1 is a special value, means 16 bytes ECC), should be
2332 identical to ramoops.ramoops_ecc parameter used by kernel
2336 source "cmd/mvebu/Kconfig"
2339 bool "terminal - provides a way to attach a serial terminal"
2341 Provides a 'cu'-like serial terminal command. This can be used to
2342 access other serial ports from the system console. The terminal
2343 is very simple with no special processing of characters. As with
2344 cu, you can press ~. (tilde followed by period) to exit.
2347 bool "uuid, guid - generation of unique IDs"
2350 This enables two commands:
2352 uuid - generate random Universally Unique Identifier
2353 guid - generate Globally Unique Identifier based on random UUID
2355 The two commands are very similar except for the endianness of the
2358 config CMD_VIDCONSOLE
2359 bool "lcdputs and setcurs"
2363 Enabling this will provide 'setcurs' and 'lcdputs' commands which
2364 support cursor positioning and drawing strings on the video
2365 console (framebuffer).
2367 The name 'lcdputs' is a bit of a misnomer, but so named because the
2368 video device is often an LCD.
2370 config CMD_SELECT_FONT
2371 bool "select font size"
2374 Enabling this will provide 'font' command.
2375 Allows font selection at runtime.
2379 source "cmd/ti/Kconfig"
2381 config CMD_BOOTSTAGE
2382 bool "Enable the 'bootstage' command"
2383 depends on BOOTSTAGE
2385 Add a 'bootstage' command which supports printing a report
2386 and un/stashing of bootstage data.
2388 menu "Power commands"
2390 bool "Enable Driver Model PMIC command"
2393 This is the pmic command, based on a driver model pmic's API.
2394 Command features are unchanged:
2395 - list - list pmic devices
2396 - pmic dev <id> - show or [set] operating pmic device (NEW)
2397 - pmic dump - dump registers
2398 - pmic read address - read byte of register at address
2399 - pmic write address - write byte to register at address
2400 The only one change for this command is 'dev' subcommand.
2402 config CMD_REGULATOR
2403 bool "Enable Driver Model REGULATOR command"
2404 depends on DM_REGULATOR
2406 This command is based on driver model regulator's API.
2407 User interface features:
2408 - list - list regulator devices
2409 - regulator dev <id> - show or [set] operating regulator device
2410 - regulator info - print constraints info
2411 - regulator status - print operating status
2412 - regulator value <val] <-f> - print/[set] voltage value [uV]
2413 - regulator current <val> - print/[set] current value [uA]
2414 - regulator mode <id> - print/[set] operating mode id
2415 - regulator enable - enable the regulator output
2416 - regulator disable - disable the regulator output
2418 The '-f' (force) option can be used for set the value which exceeds
2419 the limits, which are found in device-tree and are kept in regulator's
2420 uclass plat structure.
2424 menu "Security commands"
2426 bool "Enable the 'aes' command"
2429 This provides a means to encrypt and decrypt data using the AES
2430 (Advanced Encryption Standard). This algorithm uses a symetric key
2431 and is widely used as a streaming cipher. Different key lengths are
2432 supported by the algorithm but this command only supports 128 bits
2436 bool "Enable the 'blob' command"
2437 depends on !MX6ULL && !MX6SLL && !MX6SL
2438 select IMX_HAB if ARCH_MX6 || ARCH_MX7 || ARCH_MX7ULP || ARCH_IMX8M
2440 This is used with the Freescale secure boot mechanism.
2442 Freescale's SEC block has built-in Blob Protocol which provides
2443 a method for protecting user-defined data across system power
2444 cycles. SEC block protects data in a data structure called a Blob,
2445 which provides both confidentiality and integrity protection.
2447 Encapsulating data as a blob
2448 Each time that the Blob Protocol is used to protect data, a
2449 different randomly generated key is used to encrypt the data.
2450 This random key is itself encrypted using a key which is derived
2451 from SoC's non-volatile secret key and a 16 bit Key identifier.
2452 The resulting encrypted key along with encrypted data is called a
2453 blob. The non-volatile secure key is available for use only during
2456 During decapsulation, the reverse process is performed to get back
2460 blob enc - encapsulating data as a cryptgraphic blob
2461 blob dec - decapsulating cryptgraphic blob to get the data
2465 blob enc src dst len km
2467 Encapsulate and create blob of data $len bytes long
2468 at address $src and store the result at address $dst.
2469 $km is the 16 byte key modifier is also required for
2470 generation/use as key for cryptographic operation. Key
2471 modifier should be 16 byte long.
2473 blob dec src dst len km
2475 Decapsulate the blob of data at address $src and
2476 store result of $len byte at addr $dst.
2477 $km is the 16 byte key modifier is also required for
2478 generation/use as key for cryptographic operation. Key
2479 modifier should be 16 byte long.
2482 bool "Support 'hash' command"
2485 This provides a way to hash data in memory using various supported
2486 algorithms (such as SHA1, MD5, CRC32). The computed digest can be
2487 saved to memory or to an environment variable. It is also possible
2488 to verify a hash against data in memory.
2491 bool "Support the 'hvc' command"
2492 depends on ARM_SMCCC
2494 Allows issuing Hypervisor Calls (HVCs). Mostly useful for
2495 development and testing.
2498 bool "Support the 'smc' command"
2499 depends on ARM_SMCCC
2501 Allows issuing Secure Monitor Calls (SMCs). Mostly useful for
2502 development and testing.
2508 Add -v option to verify data against a hash.
2511 bool "scp03 - SCP03 enable and rotate/provision operations"
2514 This command provides access to a Trusted Application
2515 running in a TEE to request Secure Channel Protocol 03
2516 (SCP03) enablement and/or rotation of its SCP03 keys.
2525 bool "Enable the 'tpm' command"
2526 depends on TPM_V1 || TPM_V2
2527 select CMD_TPM_V1 if TPM_V1
2528 select CMD_TPM_V2 if TPM_V2
2530 This provides a means to talk to a TPM from the command line. A wide
2531 range of commands if provided - see 'tpm help' for details. The
2532 command requires a suitable TPM on your board and the correct driver
2538 bool "Enable the 'tpm test' command"
2541 This provides a a series of tests to confirm that the TPMv1.x is
2542 working correctly. The tests cover initialisation, non-volatile RAM,
2543 extend, global lock and checking that timing is within expectations.
2544 The tests pass correctly on Infineon TPMs but may need to be adjusted
2551 menu "Firmware commands"
2553 bool "Enable crosec command"
2557 Enable command-line access to the Chrome OS EC (Embedded
2558 Controller). This provides the 'crosec' command which has
2559 a number of sub-commands for performing EC tasks such as
2560 updating its flash, accessing a small saved context area
2561 and talking to the I2C bus behind the EC (if there is one).
2564 menu "Filesystem commands"
2566 bool "Enable the 'btrsubvol' command"
2569 This enables the 'btrsubvol' command to list subvolumes
2570 of a BTRFS filesystem. There are no special commands for
2571 listing BTRFS directories or loading BTRFS files - this
2572 can be done by the generic 'fs' commands (see CMD_FS_GENERIC)
2573 when BTRFS is enabled (see FS_BTRFS).
2576 bool "Enable the 'cbfs' command"
2579 Define this to enable support for reading from a Coreboot
2580 filesystem. This is a ROM-based filesystem used for accessing files
2581 on systems that use coreboot as the first boot-loader and then load
2582 U-Boot to actually boot the Operating System. Available commands are
2583 cbfsinit, cbfsinfo, cbfsls and cbfsload.
2586 bool "Enable the 'cramfs' command"
2587 depends on FS_CRAMFS
2589 This provides commands for dealing with CRAMFS (Compressed ROM
2590 filesystem). CRAMFS is useful when space is tight since files are
2591 compressed. Two commands are provided:
2593 cramfsls - lists files in a cramfs image
2594 cramfsload - loads a file from a cramfs image
2597 bool "EROFS command support"
2600 Support for the EROFS fs
2603 bool "ext2 command support"
2606 Enables EXT2 FS command
2609 bool "ext4 command support"
2612 Enables EXT4 FS command
2614 config CMD_EXT4_WRITE
2616 bool "ext4 write command support"
2619 Enables EXT4 FS write command
2622 bool "FAT command support"
2625 Support for the FAT fs
2628 bool "SquashFS command support"
2631 Enables SquashFS filesystem commands (e.g. load, ls).
2633 config CMD_FS_GENERIC
2634 bool "filesystem commands"
2636 Enables filesystem commands (e.g. load, ls) that work for multiple
2640 bool "fsuuid command"
2642 Enables fsuuid command for filesystem UUID.
2645 bool "jffs2 command"
2648 Enables commands to support the JFFS2 (Journalling Flash File System
2649 version 2) filesystem. This enables fsload, ls and fsinfo which
2650 provide the ability to load files, list directories and obtain
2651 filesystem information.
2654 string "Default device for JFFS2"
2655 depends on CMD_JFFS2
2658 The default device to use with the jffs2 command.
2660 config JFFS2_PART_OFFSET
2661 hex "Default offset within flash to locate the JFFS2 image"
2662 depends on CMD_JFFS2
2665 The default offset within flash to locate the JFFS2 image.
2667 config JFFS2_PART_SIZE
2668 hex "Default size of JFFS2 partition"
2669 depends on CMD_JFFS2
2672 The default size of the JFFS2 partition
2675 bool "MTD partition support"
2678 MTD partitioning tool support.
2679 It is strongly encouraged to avoid using this command
2680 anymore along with 'sf', 'nand', 'onenand'. One can still
2681 declare the partitions in the mtdparts environment variable
2682 but better use the MTD stack and the 'mtd' command instead.
2684 config CMD_MTDPARTS_SPREAD
2685 bool "Padd partition size to take account of bad blocks"
2686 depends on CMD_MTDPARTS
2688 This enables the 'spread' sub-command of the mtdparts command.
2689 This command will modify the existing mtdparts variable by increasing
2690 the size of the partitions such that 1) each partition's net size is
2691 at least as large as the size specified in the mtdparts variable and
2692 2) each partition starts on a good block.
2694 config CMD_MTDPARTS_SHOW_NET_SIZES
2695 bool "Show net size (w/o bad blocks) of partitions"
2696 depends on CMD_MTDPARTS
2698 Adds two columns to the printed partition table showing the
2699 effective usable size of a partition, if bad blocks are taken
2702 config MTDIDS_DEFAULT
2703 string "Default MTD IDs"
2704 depends on MTD || SPI_FLASH
2705 depends on !SYS_MTDPARTS_RUNTIME
2707 Defines a default MTD IDs list for use with MTD partitions in the
2708 Linux MTD command line partitions format.
2710 config MTDPARTS_DEFAULT
2711 string "Default MTD partition scheme"
2712 depends on MTD || SPI_FLASH
2713 depends on !SYS_MTDPARTS_RUNTIME
2715 Defines a default MTD partitioning scheme in the Linux MTD command
2716 line partitions format
2719 bool "reiser - Access to reiserfs filesystems"
2721 This provides two commands which operate on a resierfs filesystem,
2722 commonly used some years ago:
2724 reiserls - list files
2725 reiserload - load a file
2728 bool "yaffs2 - Access of YAFFS2 filesystem"
2732 This provides commands for accessing a YAFFS2 filesystem. Yet
2733 Another Flash Filesystem 2 is a filesystem designed specifically
2734 for NAND flash. It incorporates bad-block management and ensures
2735 that device writes are sequential regardless of filesystem
2739 bool "zfs - Access of ZFS filesystem"
2741 This provides commands to accessing a ZFS filesystem, commonly used
2742 on Solaris systems. Two sub-commands are provided:
2744 zfsls - list files in a directory
2745 zfsload - load a file
2747 See doc/README.zfs for more details.
2751 menu "Debug commands"
2753 config CMD_CBSYSINFO
2756 default y if SYS_COREBOOT
2758 This provides information about the coreboot sysinfo table stored in
2759 memory by coreboot before jumping to U-Boot. It can be useful for
2760 debugging the beaaviour of coreboot or U-Boot.
2763 bool "cyclic - Show information about cyclic functions"
2767 This enables the 'cyclic' command which provides information about
2768 cyclic execution functions. This infrastructure allows registering
2769 functions to be executed cyclically, e.g. every 100ms. These commands
2772 cyclic list - list cyclic functions
2773 cyclic cyclic demo <cycletime_ms> <delay_us> - register cyclic
2776 See doc/develop/cyclic.rst for more details.
2779 bool "diag - Board diagnostics"
2781 This command provides access to board diagnostic tests. These are
2782 called Power-on Self Tests (POST). The command allows listing of
2783 available tests and running either all the tests, or specific tests
2787 bool "event - Show information about events"
2789 default y if EVENT_DEBUG
2791 This enables the 'event' command which provides information about
2792 events and event-handler routines. This can help to device event
2796 bool "irq - Show information about interrupts"
2797 depends on !ARM && !MIPS && !RISCV && !SH
2799 This enables two commands:
2801 interrupts - enable or disable interrupts
2802 irqinfo - print device-specific interrupt information
2805 bool "kgdb - Allow debugging of U-Boot with gdb"
2808 This enables a 'kgdb' command which allows gdb to connect to U-Boot
2809 over a serial link for debugging purposes. This allows
2810 single-stepping, inspecting variables, etc. This is supported only
2811 on PowerPC at present.
2814 bool "log - Generation, control and access to logging"
2818 This provides access to logging features. It allows the output of
2819 log data to be controlled to a limited extent (setting up the default
2820 maximum log level for emitting of records). It also provides access
2821 to a command used for testing the log system.
2824 bool "trace - Support tracing of function calls and timing"
2828 Enables a command to control using of function tracing within
2829 U-Boot. This allows recording of call traces including timing
2830 information. The command can write data to memory for exporting
2831 for analysis (e.g. using bootchart). See doc/README.trace for full
2835 bool "avb - Android Verified Boot 2.0 operations"
2836 depends on AVB_VERIFY
2838 Enables a "avb" command to perform verification of partitions using
2839 Android Verified Boot 2.0 functionality. It includes such subcommands:
2840 avb init - initialize avb2 subsystem
2841 avb read_rb - read rollback index
2842 avb write_rb - write rollback index
2843 avb is_unlocked - check device lock state
2844 avb get_uuid - read and print uuid of a partition
2845 avb read_part - read data from partition
2846 avb read_part_hex - read data from partition and output to stdout
2847 avb write_part - write data to partition
2848 avb verify - run full verification chain
2850 config CMD_STACKPROTECTOR_TEST
2851 bool "Test command for stack protector"
2852 depends on STACKPROTECTOR
2854 Enable stackprot_test command
2855 The stackprot_test command will force a stack overrun to test
2856 the stack smashing detection mechanisms.
2861 tristate "Enable UBI - Unsorted block images commands"
2864 UBI is a software layer above MTD layer which admits use of LVM-like
2865 logical volumes on top of MTD devices, hides some complexities of
2866 flash chips like wear and bad blocks and provides some other useful
2867 capabilities. Please, consult the MTD web site for more details
2868 (www.linux-mtd.infradead.org). Activate this option if you want
2869 to use U-Boot UBI commands.
2870 It is also strongly encouraged to also enable CONFIG_MTD to get full
2873 config CMD_UBI_RENAME
2874 bool "Enable rename"
2877 Enable a "ubi" command to rename ubi volume:
2878 ubi rename <oldname> <newname>
2881 tristate "Enable UBIFS - Unsorted block images filesystem commands"
2883 default y if CMD_UBI
2887 UBIFS is a file system for flash devices which works on top of UBI.
2889 config MMC_SPEED_MODE_SET
2890 bool "set speed mode using mmc command"
2893 Enable setting speed mode using mmc rescan and mmc dev commands.
2894 The speed mode is provided as the last argument in these commands
2895 and is indicated using the index from enum bus_mode in
2896 include/mmc.h. A speed mode can be set only if it has already
2897 been enabled in the device tree.
2900 bool "Amlogic Meson commands"
2901 depends on ARCH_MESON
2904 Enable useful commands for the Meson Soc family developed by Amlogic Inc.
projects / thirdparty / u-boot.git / blob