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 bool "Command execution tracer"
83 This option enables the possiblity to print all commands before
84 executing them and after all variables are evaluated (similar
85 to Bash's xtrace/'set -x' feature).
86 To enable the tracer a variable "xtrace" needs to be defined in
101 List and dump ACPI tables. ACPI (Advanced Configuration and Power
102 Interface) is used mostly on x86 for providing information to the
103 Operating System about devices in the system. The tables are set up
104 by the firmware, typically U-Boot but possibly an earlier firmware
105 module, if U-Boot is chain-loaded from something else. ACPI tables
106 can also include code, to perform hardware-specific tasks required
107 by the Operating Systems. This allows some amount of separation
108 between the firmware and OS, and is particularly useful when you
109 want to make hardware changes without the OS needing to be adjusted.
116 List non-identity virtual-physical memory mappings for 32-bit CPUs.
124 config CMD_BDINFO_EXTRA
125 bool "bdinfo extra features"
126 default y if SANDBOX || X86
128 Show additional information about the board. This uses a little more
129 code space but provides more options, particularly those useful for
130 bringup, development and debugging.
137 Print ".config" contents.
139 If this option is enabled, the ".config" file contents are embedded
140 in the U-Boot image and can be printed on the console by the "config"
141 command. This provides information of which options are enabled on
148 Print console devices and information.
154 Print information about available CPUs. This normally shows the
155 number of CPUs, type (e.g. manufacturer, architecture, product or
156 internal name) and clock frequency. Other information may be
157 available depending on the CPU driver.
159 config CMD_FWU_METADATA
160 bool "fwu metadata read"
161 depends on FWU_MULTI_BANK_UPDATE
163 Command to read the metadata and dump it's contents
167 depends on CMDLINE_EDITING
169 Show the command-line history, i.e. a list of commands that are in
176 Print GPL license text
181 Provides access to the Intel Power-Management Controller (PMC) so
182 that its state can be examined. This does not currently support
183 changing the state but it is still useful for debugging and seeing
192 config CMD_TLV_EEPROM
194 depends on I2C_EEPROM
197 Display and program the system EEPROM data block in ONIE Tlvinfo
198 format. TLV stands for Type-Length-Value.
200 config SPL_CMD_TLV_EEPROM
201 bool "tlv_eeprom for SPL"
202 depends on SPL_I2C_EEPROM
203 select SPL_DRIVERS_MISC
206 Read system EEPROM data block in ONIE Tlvinfo format from SPL.
210 depends on RISCV_SMODE && SBI_V02
212 Display information about the SBI implementation.
222 Run the command stored in the environment "bootcmd", i.e.
223 "bootd" does the same thing as "run bootcmd".
229 Boot an application image from the memory.
231 config CMD_BOOTM_PRE_LOAD
232 bool "enable pre-load on bootm"
234 depends on IMAGE_PRE_LOAD
236 Enable support of stage pre-load for the bootm command.
237 This stage allow to check or modify the image provided
238 to the bootm command.
243 default y if BOOTSTD_FULL
245 Support listing available bootdevs (boot devices) which can provide an
246 OS to boot, as well as showing information about a particular one.
248 This command is not necessary for bootstd to work.
255 Support scanning for bootflows available with the bootdevs. The
256 bootflows can optionally be booted.
258 config CMD_BOOTFLOW_FULL
259 bool "bootflow - extract subcommands"
260 depends on BOOTSTD_FULL
263 Add the ability to list the available bootflows, select one and obtain
264 information about it.
266 This command is not necessary for bootstd to work.
271 default y if BOOTSTD_FULL
273 Support listing available bootmethds (methods used to boot an
274 Operating System), as well as selecting the order that the bootmeths
277 This command is not necessary for bootstd to work.
280 bool "Support booting UEFI FIT images"
281 depends on CMD_BOOTEFI && CMD_BOOTM && FIT
284 Support booting UEFI FIT images via the bootm command.
289 Boot the Linux zImage
293 depends on ARM64 || RISCV
296 Boot an AArch64 Linux Kernel image from memory.
299 bool "Support booting Linux OS images"
300 depends on CMD_BOOTM || CMD_BOOTZ || CMD_BOOTI
303 Support booting the Linux kernel directly via a command such as bootm
307 bool "Support booting NetBSD (non-EFI) loader images"
311 Support booting NetBSD via the bootm command.
313 config BOOTM_OPENRTOS
314 bool "Support booting OPENRTOS / FreeRTOS images"
317 Support booting OPENRTOS / FreeRTOS via the bootm command.
320 bool "Support booting Enea OSE images"
321 depends on (ARM && (ARM64 || CPU_V7A || CPU_V7R) || SANDBOX || PPC || X86)
324 Support booting Enea OSE images via the bootm command.
327 bool "Support booting Plan9 OS images"
331 Support booting Plan9 images via the bootm command.
334 bool "Support booting RTEMS OS images"
338 Support booting RTEMS images via the bootm command.
341 bool "Support read SEAMA NAND images"
342 depends on MTD_RAW_NAND
344 Support reading NAND Seattle Image (SEAMA) images.
347 bool "vbe - Verified Boot for Embedded"
348 depends on BOOTMETH_VBE
349 default y if BOOTSTD_FULL
351 Provides various subcommands related to VBE, such as listing the
352 available methods, looking at the state and changing which method
353 is used to boot. Updating the parameters is not currently
357 bool "Support booting VxWorks OS images"
361 Support booting VxWorks images via the bootm command.
364 hex "Maximum size of a decompresed OS image"
365 depends on CMD_BOOTM || CMD_BOOTI || CMD_BOOTZ || \
366 LEGACY_IMAGE_FORMAT || SPL_LEGACY_IMAGE_FORMAT
367 default 0x4000000 if PPC || ARM64
368 default 0x1000000 if X86 || ARCH_MX6 || ARCH_MX7
371 This is the maximum size of the buffer that is used to decompress the OS
372 image in to, if passing a compressed image to bootm/booti/bootz.
376 depends on EFI_LOADER
379 Boot an EFI image from memory.
381 config CMD_BOOTEFI_HELLO_COMPILE
382 bool "Compile a standard EFI hello world binary for testing"
383 depends on CMD_BOOTEFI && !CPU_V7M
386 This compiles a standard EFI hello world application with U-Boot so
387 that it can be used with the test/py testing framework. This is useful
388 for testing that EFI is working at a basic level, and for bringing
389 up EFI support on a new architecture.
391 No additional space will be required in the resulting U-Boot binary
392 when this option is enabled.
394 config CMD_BOOTEFI_HELLO
395 bool "Allow booting a standard EFI hello world for testing"
396 depends on CMD_BOOTEFI_HELLO_COMPILE
397 default y if CMD_BOOTEFI_SELFTEST
399 This adds a standard EFI hello world application to U-Boot so that
400 it can be used with the 'bootefi hello' command. This is useful
401 for testing that EFI is working at a basic level, and for bringing
402 up EFI support on a new architecture.
404 source lib/efi_selftest/Kconfig
411 Add an ANSI terminal boot menu command.
416 Android DTB/DTBO image manipulation commands. Read dtb/dtbo files from
417 image into RAM, dump image structure information, etc. Those dtb/dtbo
418 files should be merged in one dtb further, which needs to be passed to
419 the kernel, as part of a boot process.
423 depends on ANDROID_BOOT_IMAGE
425 Android Boot Image manipulation commands. Allows one to extract
426 images contained in boot.img, like kernel, ramdisk, dtb, etc, and
427 obtain corresponding meta-information from boot.img.
429 See doc/android/boot-image.rst for details.
432 bool "cedit - Configuration editor"
436 Provides a command to allow editing of board configuration and
437 providing a UI for the user to adjust settings. Subcommands allow
438 loading and saving of configuration as well as showing an editor.
441 bool "bootelf, bootvx"
445 Boot an ELF/vxWorks image from the memory.
448 bool "Flattened Device Tree utility commands"
452 Do FDT related setup before booting into the Operating System.
454 config SUPPORT_EXTENSION_SCAN
458 bool "Extension board management command"
460 depends on SUPPORT_EXTENSION_SCAN
462 Enables the "extension" command, which allows to detect
463 extension boards connected to the system, and apply
464 corresponding Device Tree overlays.
470 Start an application at a given address.
476 Run the command in the given environment variable.
482 Print header information for application image.
487 List all images found in flash
493 Extract a part of a multi-image.
496 bool "spl export - Export boot information for Falcon boot"
499 Falcon mode allows booting directly from SPL into an Operating
500 System such as Linux, thus skipping U-Boot proper. See
501 doc/README.falcon for full information about how to use this
504 config CMD_SPL_NAND_OFS
505 hex "Offset of OS args or dtb for Falcon-mode NAND boot"
506 depends on CMD_SPL && (TPL_NAND_SUPPORT || SPL_NAND_SUPPORT)
509 This provides the offset of the command line arguments for Linux
510 when booting from NAND in Falcon mode. See doc/README.falcon
511 for full information about how to use this option (and also see
512 board/gateworks/gw_ventana/README for an example).
514 config CMD_SPL_NOR_OFS
515 hex "Offset of OS args or dtb for Falcon-mode NOR boot"
516 depends on CMD_SPL && SPL_NOR_SUPPORT
519 This provides the offset of the command line arguments or dtb for
520 Linux when booting from NOR in Falcon mode.
522 config CMD_SPL_WRITE_SIZE
523 hex "Size of argument area"
527 This provides the size of the command-line argument area in NAND
528 flash used by Falcon-mode boot. See the documentation until CMD_SPL
531 config CMD_THOR_DOWNLOAD
532 bool "thor - TIZEN 'thor' download"
534 select USB_FUNCTION_THOR
535 depends on USB_GADGET_DOWNLOAD
537 Implements the 'thor' download protocol. This is a way of
538 downloading a software update over USB from an attached host.
539 There is no documentation about this within the U-Boot source code
540 but you should be able to find something on the interwebs.
542 config THOR_RESET_OFF
543 bool "thor: Disable reset on completion"
544 depends on CMD_THOR_DOWNLOAD
547 bool "zboot - x86 boot command"
549 With x86 machines it is common to boot a bzImage file which
550 contains both a kernel and a setup.bin file. The latter includes
551 configuration information from the dark ages which x86 boards still
552 need to pick things out of.
554 Consider using FIT in preference to this since it supports directly
555 booting both 32- and 64-bit kernels, as well as secure boot.
556 Documentation is available in doc/uImage.FIT/x86-fit-boot.txt
560 menu "Environment commands"
563 bool "ask for env variable"
565 Ask for environment variable
583 Edit environment variable.
588 Allow for searching environment variables
594 Save all environment variables into the compiled-in persistent
599 depends on CMD_SAVEENV
601 Erase environment variables from the compiled-in persistent
604 config CMD_ENV_EXISTS
608 Check if a variable is defined in the environment for use in
611 config CMD_ENV_CALLBACK
612 bool "env callbacks - print callbacks and their associated variables"
614 Some environment variable have callbacks defined by
615 U_BOOT_ENV_CALLBACK. These are called when the variable changes.
616 For example changing "baudrate" adjust the serial baud rate. This
617 command lists the currently defined callbacks.
620 bool "env flags -print variables that have non-default flags"
622 Some environment variables have special flags that control their
623 behaviour. For example, serial# can only be written once and cannot
624 be deleted. This command shows the variables that have special
627 config CMD_NVEDIT_EFI
628 bool "env [set|print] -e - set/print UEFI variables"
629 depends on EFI_LOADER
632 UEFI variables are encoded as some form of U-Boot variables.
633 If enabled, we are allowed to set/print UEFI variables using
634 "env" command with "-e" option without knowing details.
636 config CMD_NVEDIT_INDIRECT
637 bool "env indirect - Sets environment value from another"
639 config CMD_NVEDIT_INFO
640 bool "env info - print or evaluate environment information"
642 Print environment information:
643 - env_valid : is environment valid
644 - env_ready : is environment imported into hash table
645 - env_use_default : is default environment used
647 This command can be optionally used for evaluation in scripts:
648 [-d] : evaluate whether default environment is used
649 [-p] : evaluate whether environment can be persisted
651 The result of multiple evaluations will be combined with AND.
653 config CMD_NVEDIT_LOAD
656 Load all environment variables from the compiled-in persistent
659 config CMD_NVEDIT_SELECT
662 Select the compiled-in persistent storage of environment variables.
666 menu "Memory commands"
671 Compute binary operations (xor, or, and) of byte arrays of arbitrary
672 size from memory and store the result in memory or the environment.
676 default y if BLOBLIST
678 Show information about the bloblist, a collection of binary blobs
679 held in memory that persist between SPL and U-Boot. In the case of
680 x86 devices the bloblist can be used to hold ACPI tables so that they
681 remain available in memory.
694 Add -v option to verify data against a crc32 checksum.
697 bool "eeprom - EEPROM subsystem"
699 (deprecated, needs conversion to driver model)
700 Provides commands to read and write EEPROM (Electrically Erasable
701 Programmable Read Only Memory) chips that are connected over an
704 config CMD_EEPROM_LAYOUT
705 bool "Enable layout-aware eeprom commands"
706 depends on CMD_EEPROM
708 (deprecated, needs conversion to driver model)
709 When enabled, additional eeprom sub-commands become available.
711 eeprom print - prints the contents of the eeprom in a human-readable
712 way (eeprom layout fields, and data formatted to be fit for human
715 eeprom update - allows user to update eeprom fields by specifying
716 the field name, and providing the new data in a human readable format
717 (same format as displayed by the eeprom print command).
719 Both commands can either auto detect the layout, or be told which
723 __weak int parse_layout_version(char *str)
724 - override to provide your own layout name parsing
725 __weak void __eeprom_layout_assign(struct eeprom_layout *layout,
727 - override to setup the layout metadata based on the version
728 __weak int eeprom_layout_detect(unsigned char *data)
729 - override to provide your own algorithm for detecting layout
732 - contains various printing and updating functions for common
733 types of eeprom fields. Can be used for defining
736 config EEPROM_LAYOUT_HELP_STRING
737 string "Tells user what layout names are supported"
738 depends on CMD_EEPROM_LAYOUT
739 default "<not defined>"
741 Help printed with the LAYOUT VERSIONS part of the 'eeprom'
744 config SYS_I2C_EEPROM_BUS
745 int "I2C bus of the EEPROM device."
746 depends on CMD_EEPROM
749 config SYS_I2C_EEPROM_ADDR_LEN
750 int "Length in bytes of the EEPROM memory array address"
751 depends on CMD_EEPROM || ID_EEPROM
755 Note: This is NOT the chip address length!
757 config SYS_EEPROM_SIZE
758 depends on CMD_EEPROM
759 int "Size in bytes of the EEPROM device"
762 config SYS_EEPROM_PAGE_WRITE_BITS
763 int "Number of bits used to address bytes in a single page"
764 depends on CMD_EEPROM
767 The EEPROM page size is 2^SYS_EEPROM_PAGE_WRITE_BITS.
768 A 64 byte page, for example would require six bits.
770 config SYS_EEPROM_PAGE_WRITE_DELAY_MS
771 int "Number of milliseconds to delay between page writes"
772 depends on CMD_EEPROM || CMD_I2C
778 Infinite write loop on address range
784 Compute MD5 checksum.
788 depends on CMD_MD5SUM
790 Add -v option to verify data against an MD5 checksum.
795 Display memory information.
798 bool "md, mm, nm, mw, cp, cmp, base, loop"
803 mm - memory modify (auto-incrementing address)
804 nm - memory modify (constant address)
805 mw - memory write (fill)
808 base - print or set address offset
809 loop - initialize loop on address range
811 config CMD_MEM_SEARCH
812 bool "ms - Memory search"
814 Memory-search command
816 This allows searching through a region of memory looking for hex
817 data (byte, 16-bit word, 32-bit long, also 64-bit on machines that
818 support it). It is also possible to search for a string. The
819 command accepts a memory range and a list of values to search for.
820 The values need to appear in memory in the same order they are given
821 in the command. At most 10 matches can be returned at a time, but
822 pressing return will show the next 10 matches. Environment variables
823 are set for use with scripting (memmatches, memaddr, mempos).
826 bool "Enable cyclic md/mw commands"
827 depends on CMD_MEMORY
829 Add the "mdc" and "mwc" memory commands. These are cyclic
834 This command will print 4 bytes (10,11,12,13) each 500 ms.
836 => mwc.l 100 12345678 10
837 This command will write 12345678 to address 100 all 10 ms.
842 depends on CMD_MEMORY && (LIB_RAND || LIB_HW_RAND)
844 random - fill memory with random data
849 Simple RAM read/write test.
853 config SYS_ALT_MEMTEST
854 bool "Alternative test"
856 Use a more complete alternative memory test.
860 config SYS_ALT_MEMTEST_BITFLIP
864 The alternative memory test includes bitflip test since 2020.07.
865 The bitflip test significantly increases the overall test time.
866 Bitflip test can optionally be disabled here.
870 config SYS_MEMTEST_START
871 hex "default start address for mtest"
874 This is the default start address for mtest for simple read/write
875 test. If no arguments are given to mtest, default address is used
878 config SYS_MEMTEST_END
879 hex "default end address for mtest"
882 This is the default end address for mtest for simple read/write
883 test. If no arguments are given to mtest, default address is used
892 Compute SHA1 checksum.
894 config SHA1SUM_VERIFY
896 depends on CMD_SHA1SUM
898 Add -v option to verify data against a SHA1 checksum.
901 bool "strings - display strings in memory"
903 This works similarly to the Unix 'strings' command except that it
904 works with a memory range. String of printable characters found
905 within the range are displayed. The minimum number of characters
906 for a sequence to be considered a string can be provided.
910 menu "Compression commands"
914 default y if CMD_BOOTI
917 Support decompressing an LZMA (Lempel-Ziv-Markov chain algorithm)
922 default y if CMD_BOOTI
925 Support decompressing an LZ4 image from memory region.
929 default y if CMD_BOOTI
932 Uncompress a zip-compressed memory region.
936 select GZIP_COMPRESSED
938 Compress a memory region with zlib deflate method.
942 menu "Device access commands"
945 bool "Arm FF-A test command"
946 depends on ARM_FFA_TRANSPORT
948 Provides a test command for the FF-A support
950 - Listing the partition(s) info
951 - Sending a data pattern to the specified partition
952 - Displaying the arm_ffa device info
955 #depends on FLASH_CFI_DRIVER
958 ARM Ltd reference designs flash partition access
961 bool "adc - Access Analog to Digital Converters info and data"
963 depends on DM_REGULATOR
965 Shows ADC device info and permit printing one-shot analog converted
966 data from a named Analog to Digital Converter.
971 depends on PARTITIONS
973 Read/modify/write the fields of Bootloader Control Block, usually
974 stored on the flash "misc" partition with its structure defined in:
975 https://android.googlesource.com/platform/bootable/recovery/+/master/
976 bootloader_message/include/bootloader_message/bootloader_message.h
978 Some real-life use-cases include (but are not limited to):
979 - Determine the "boot reason" (and act accordingly):
980 https://source.android.com/devices/bootloader/boot-reason
981 - Get/pass a list of commands from/to recovery:
982 https://android.googlesource.com/platform/bootable/recovery
983 - Inspect/dump the contents of the BCB fields
986 bool "bind/unbind - Bind or unbind a device to/from a driver"
988 default y if USB_ETHER
990 Bind or unbind a device to/from a driver from the command line.
991 This is useful in situations where a device may be handled by several
992 drivers. For example, this can be used to bind a UDC to the usb ether
993 gadget driver from the command line.
996 bool "clk - Show clock frequencies"
999 Shows clock frequences by calling a sock_clk_dump() hook function.
1000 This is depreated in favour of using the CLK uclass and accessing
1001 clock values from associated drivers. However currently no command
1005 bool "demo - Demonstration commands for driver model"
1008 Provides a 'demo' command which can be used to play around with
1009 driver model. To use this properly you will need to enable one or
1010 both of the demo devices (DM_DEMO_SHAPE and DM_DEMO_SIMPLE).
1011 Otherwise you will always get an empty list of devices. The demo
1012 devices are defined in the sandbox device tree, so the easiest
1013 option is to use sandbox and pass the -d point to sandbox's
1020 Enables the command "dfu" which is used to have U-Boot create a DFU
1021 class device via USB. This command requires that the "dfu_alt_info"
1022 environment variable be set and define the alt settings to expose to
1026 bool "dm - Access to driver model information"
1029 Provides access to driver model data structures and information,
1030 such as a list of devices, list of uclasses and the state of each
1031 device (e.g. activated). This is not required for operation, but
1032 can be useful to see the state of driver model for debugging or
1036 bool "fastboot - Android fastboot support"
1039 This enables the command "fastboot" which enables the Android
1040 fastboot mode for the platform. Fastboot is a protocol for
1041 downloading images, flashing and device control used on
1042 Android devices. Fastboot requires either the network stack
1043 enabled or support for acting as a USB device.
1045 See doc/android/fastboot.rst for more information.
1048 bool "flinfo, erase, protect"
1050 depends on MTD || FLASH_CFI_DRIVER || MTD_NOR_FLASH
1053 flinfo - print FLASH memory information
1054 erase - FLASH memory
1055 protect - enable or disable FLASH write protection
1064 config CMD_FPGA_LOADBP
1065 bool "fpga loadbp - load partial bitstream (Xilinx only)"
1068 Supports loading an FPGA device from a bitstream buffer containing
1069 a partial bitstream.
1071 config CMD_FPGA_LOADFS
1072 bool "fpga loadfs - load bitstream from FAT filesystem (Xilinx only)"
1075 Supports loading an FPGA device from a FAT filesystem.
1077 config CMD_FPGA_LOADMK
1078 bool "fpga loadmk - load bitstream from image"
1081 Supports loading an FPGA device from a image generated by mkimage.
1083 config CMD_FPGA_LOADP
1084 bool "fpga loadp - load partial bitstream"
1087 Supports loading an FPGA device from a bitstream buffer containing
1088 a partial bitstream.
1090 config CMD_FPGA_LOAD_SECURE
1091 bool "fpga loads - loads secure bitstreams"
1093 select FPGA_LOAD_SECURE
1095 Enables the fpga loads command which is used to load secure
1096 (authenticated or encrypted or both) bitstreams on to FPGA.
1099 bool "fpgad - dump FPGA registers"
1101 (legacy, needs conversion to driver model)
1102 Provides a way to dump FPGA registers by calling the board-specific
1103 fpga_get_reg() function. This functions similarly to the 'md'
1107 bool "fuse - support for the fuse subssystem"
1109 (deprecated - needs conversion to driver model)
1110 This allows reading, sensing, programming or overriding fuses
1111 which control the behaviour of the device. The command uses the
1119 config CMD_GPIO_READ
1120 bool "gpio read - save GPIO value to variable"
1123 Enables the 'gpio read' command that saves the value
1124 of a GPIO pin to a variable.
1130 Control PWM channels, this allows invert/config/enable/disable PWM channels.
1133 bool "GPT (GUID Partition Table) command"
1134 select EFI_PARTITION
1135 select PARTITION_UUIDS
1138 Enable the 'gpt' command to ready and write GPT style partition
1142 bool "GPT Random UUID generation"
1145 Enable the generation of partitions with random UUIDs if none
1148 config CMD_GPT_RENAME
1149 bool "GPT partition renaming commands"
1152 Enables the 'gpt' command to interchange names on two GPT
1153 partitions via the 'gpt swap' command or to rename single
1154 partitions via the 'rename' command.
1157 bool "ide - Support for IDE drivers"
1160 Provides an 'ide' command which allows accessing the IDE drive,
1161 resetting the IDE interface, printing the partition table and
1162 geting device info. It also enables the 'diskboot' command which
1163 permits booting from an IDE drive.
1166 bool "io - Support for performing I/O accesses"
1168 Provides an 'iod' command to display I/O space and an 'iow' command
1169 to write values to the I/O space. This can be useful for manually
1170 checking the state of devices during boot when debugging device
1174 bool "iotrace - Support for tracing I/O activity"
1176 Provides an 'iotrace' command which supports recording I/O reads and
1177 writes in a trace buffer in memory . It also maintains a checksum
1178 of the trace records (even if space is exhausted) so that the
1179 sequence of I/O accesses can be verified.
1181 When debugging drivers it is useful to see what I/O accesses were
1182 done and in what order.
1184 Even if the individual accesses are of little interest it can be
1185 useful to verify that the access pattern is consistent each time
1186 an operation is performed. In this case a checksum can be used to
1187 characterise the operation of a driver. The checksum can be compared
1188 across different runs of the operation to verify that the driver is
1191 In particular, when performing major refactoring of the driver, where
1192 the access pattern should not change, the checksum provides assurance
1193 that the refactoring work has not broken the driver.
1195 This works by sneaking into the io.h heder for an architecture and
1196 redirecting I/O accesses through iotrace's tracing mechanism.
1198 For now no commands are provided to examine the trace buffer. The
1199 format is fairly simple, so 'md' is a reasonable substitute.
1201 Note: The checksum feature is only useful for I/O regions where the
1202 contents do not change outside of software control. Where this is not
1203 suitable you can fall back to manually comparing the addresses. It
1204 might be useful to enhance tracing to only checksum the accesses and
1205 not the data read/written.
1215 bool "w1 - Support for Dallas 1-Wire protocol"
1217 Dallas 1-wire protocol support
1223 Load a binary file over serial line.
1228 Load a binary over memory mapped.
1231 bool "loads - Load a file over serial in S-Record format"
1234 Load an S-Record file over serial line
1237 bool "Echo all characters received during a loads back to console"
1238 depends on CMD_LOADS
1240 If enabled, all characters received during a serial download (using
1241 the "loads" command) are echoed back. This might be needed by some
1242 terminal emulations (like "cu"), but may as well just take time on
1243 others. This sets the initial value of the "loads_echo" environment
1247 bool "saves - Save a file over serial in S-Record format"
1248 depends on CMD_LOADS
1250 Provides a way to save a binary file using the Motorola S-Record
1251 format over the serial line.
1253 config SYS_LOADS_BAUD_CHANGE
1254 bool "Enable a temporary baudrate change during loads/saves command"
1255 depends on CMD_LOADS || CMD_SAVES
1257 config CMD_LOADXY_TIMEOUT
1258 int "loadxy_timeout"
1262 Initial timeout for loadx and loady commands. Zero means infinity.
1266 bool "lsblk - list block drivers and devices"
1268 Print list of available block device drivers, and for each, the list
1269 of known block devices.
1272 bool "MBR (Master Boot Record) command"
1273 select DOS_PARTITION
1275 Enable the 'mbr' command to ready and write MBR (Master Boot Record)
1276 style partition tables.
1282 Enable the command "misc" for accessing miscellaneous devices with
1283 a MISC uclass driver. The command provides listing all MISC devices
1284 as well as read and write functionalities via their drivers.
1290 MMC memory mapped support.
1294 config CMD_BKOPS_ENABLE
1295 bool "mmc bkops enable"
1298 Enable command for setting manual background operations handshake
1299 on a eMMC device. The feature is optionally available on eMMC devices
1300 conforming to standard >= 4.41.
1303 bool "Enable support for reading card registers in the mmc command"
1306 Enable the commands for reading card registers. This is useful
1307 mostly for debugging or extracting details from the card.
1310 bool "Enable support for RPMB in the mmc command"
1311 depends on SUPPORT_EMMC_RPMB
1313 Enable the commands for reading, writing and programming the
1314 key for the Replay Protection Memory Block partition in eMMC.
1316 config CMD_MMC_SWRITE
1318 depends on MMC_WRITE
1321 Enable support for the "mmc swrite" command to write Android sparse
1330 Enable storage cloning over block devices, useful for
1331 initial flashing by external block device without network
1334 config CMD_OPTEE_RPMB
1335 bool "Enable read/write support on RPMB via OPTEE"
1336 depends on SUPPORT_EMMC_RPMB && OPTEE
1338 Enable the commands for reading, writing persistent named values
1339 in the Replay Protection Memory Block partition in eMMC by
1340 using Persistent Objects in OPTEE
1345 select MTD_PARTITIONS
1347 MTD commands support.
1351 depends on MULTIPLEXER
1353 List, select, and deselect mux controllers on the fly.
1357 default y if NAND_SUNXI
1358 depends on MTD_RAW_NAND
1363 config CMD_NAND_TRIMFFS
1364 bool "nand write.trimffs"
1365 default y if ARCH_SUNXI
1367 Allows one to skip empty pages when flashing something on a NAND.
1369 config CMD_NAND_LOCK_UNLOCK
1370 bool "nand lock/unlock"
1372 NAND locking support.
1374 config CMD_NAND_TORTURE
1377 NAND torture support.
1386 NVM Express device support
1389 bool "onenand - access to onenand device"
1392 OneNAND is a brand of NAND ('Not AND' gate) flash which provides
1393 various useful features. This command allows reading, writing,
1394 and erasing blocks. It allso provides a way to show and change
1395 bad blocks, and test the device.
1397 config USE_ONENAND_BOARD_INIT
1398 bool "Call onenand_board_init() in the onenand command"
1399 depends on CMD_ONENAND
1404 Enable the 'osd' command which allows to query information from and
1405 write text data to a on-screen display (OSD) device; a virtual device
1406 associated with a display capable of displaying a text overlay on the
1407 display it's associated with..
1411 depends on PARTITIONS
1412 select PARTITION_UUIDS
1414 Read and display information about the partition table on
1418 bool "pci - Access PCI devices"
1420 Provide access to PCI (Peripheral Interconnect Bus), a type of bus
1421 used on some devices to allow the CPU to communicate with its
1422 peripherals. Sub-commands allow bus enumeration, displaying and
1423 changing configuration space and a few other features.
1426 bool "pci_mps - Configure PCI device MPS"
1429 Enables PCI Express Maximum Packet Size (MPS) tuning. This
1430 command configures the PCI Express MPS of each endpoint to the
1431 largest value supported by all devices below the root complex.
1432 The Maximum Read Request Size will not be altered. This method is
1433 the same algorithm as used by Linux pci=pcie_bus_safe.
1436 bool "pinmux - show pins muxing"
1438 default y if PINCTRL
1440 Parse all available pin-controllers and show pins muxing. This
1441 is useful for debug purpoer to check the pin muxing and to know if
1442 a pin is configured as a GPIO or as an alternate function.
1447 Poweroff/Shutdown the system
1450 bool "read - Read binary data from a partition"
1452 Provides low-level access to the data in a partition.
1454 config CMD_REMOTEPROC
1456 depends on REMOTEPROC
1458 Support for Remote Processor control
1461 bool "sata - Access SATA subsystem"
1464 SATA (Serial Advanced Technology Attachment) is a serial bus
1465 standard for connecting to hard drives and other storage devices.
1466 This command provides information about attached devices and allows
1467 reading, writing and other operations.
1469 SATA replaces PATA (originally just ATA), which stands for Parallel AT
1470 Attachment, where AT refers to an IBM AT (Advanced Technology)
1471 computer released in 1984.
1474 bool "scsi - Access to SCSI devices"
1478 This provides a 'scsi' command which provides access to SCSI (Small
1479 Computer System Interface) devices. The command provides a way to
1480 scan the bus, reset the bus, read and write data and get information
1484 bool "sdram - Print SDRAM configuration information"
1486 Provides information about attached SDRAM. This assumed that the
1487 SDRAM has an EEPROM with information that can be read using the
1488 I2C bus. This is only available on some boards.
1492 depends on DM_SPI_FLASH || SPI_FLASH
1493 default y if DM_SPI_FLASH
1498 bool "sf test - Allow testing of SPI flash"
1501 Provides a way to test that SPI flash is working correctly. The
1502 test is destructive, in that an area of SPI flash must be provided
1503 for the test to use. Performance information is also provided,
1504 measuring the performance of reading, writing and erasing in
1505 Mbps (Million Bits Per Second). This value should approximately
1506 equal the SPI bus speed for a single-bit-wide SPI bus, assuming
1507 everything is working properly.
1510 bool "sspi - Command to access spi device"
1513 SPI utility command.
1515 config DEFAULT_SPI_BUS
1516 int "default spi bus used by sspi command"
1520 config DEFAULT_SPI_MODE
1521 hex "default spi mode used by sspi command (see include/spi.h)"
1525 config CMD_TEMPERATURE
1526 bool "temperature - display the temperature from thermal sensors"
1527 depends on DM_THERMAL
1529 Provides a way to list thermal sensors and to get their readings.
1532 bool "tsi148 - Command to access tsi148 device"
1534 This provides various sub-commands to initialise and configure the
1535 Turndra tsi148 device. See the command help for full details.
1538 bool "Enable UFS - Universal Flash Subsystem commands"
1541 "This provides commands to initialise and configure universal flash
1545 bool "universe - Command to set up the Turndra Universe controller"
1547 This allows setting up the VMEbus provided by this controller.
1548 See the command help for full details.
1558 select USB_FUNCTION_SDP
1560 Enables the command "sdp" which is used to have U-Boot emulating the
1561 Serial Download Protocol (SDP) via USB.
1567 Enable the command "rkmtd" to create a virtual block device to transfer
1568 Rockchip boot block data to and from NAND with block orientated tools
1569 like "ums" and "rockusb".
1573 depends on USB_FUNCTION_ROCKUSB
1575 Rockusb protocol is widely used by Rockchip SoC based devices. It can
1576 read/write info, image to/from devices. This enable rockusb command
1577 support to communication with rockusb device. for more detail about
1578 this command, please read doc/README.rockusb.
1580 config CMD_USB_MASS_STORAGE
1581 bool "UMS usb mass storage"
1582 depends on USB_GADGET_DOWNLOAD
1583 select USB_FUNCTION_MASS_STORAGE
1584 depends on BLK && USB_GADGET
1586 Enables the command "ums" and the USB mass storage support to the
1587 export a block device: U-Boot, the USB device, acts as a simple
1588 external hard drive plugged on the host USB port.
1590 config CMD_UMS_ABORT_KEYED
1591 bool "UMS abort with any key"
1592 depends on CMD_USB_MASS_STORAGE
1594 Allow interruption of usb mass storage run with any key pressed.
1597 bool "Xen para-virtualized block device"
1601 Xen para-virtualized block device support
1608 VirtIO block device support
1614 This provides commands to control the watchdog timer devices.
1617 bool "write - Write binary data to a partition"
1619 Provides low-level write access to a partition.
1625 Enable the command "axi" for accessing AXI (Advanced eXtensible
1626 Interface) busses, a on-chip interconnect specification for managing
1627 functional blocks in SoC designs, which is also often used in designs
1628 involving FPGAs (e.g. communication with IP cores in Xilinx FPGAs).
1632 menu "Shell scripting commands"
1637 Print file to standard output
1643 Echo args to console
1649 Return true/false on integer compare.
1655 Run script from memory
1661 Evaluate boolean and math expressions and store the result in an env
1663 Also supports loading the value at a memory location into a variable.
1664 If CONFIG_REGEX is enabled, setexpr also supports a gsub function.
1666 config CMD_SETEXPR_FMT
1668 depends on CMD_SETEXPR
1670 Evaluate format string expression and store result in an environment
1676 Print file as hexdump to standard output
1680 menu "Android support commands"
1682 config CMD_AB_SELECT
1684 depends on ANDROID_AB
1686 On Android devices with more than one boot slot (multiple copies of
1687 the kernel and system images) this provides a command to select which
1688 slot should be used to boot from and register the boot attempt. This
1689 is used by the new A/B update model where one slot is updated in the
1690 background while running from the other slot.
1697 bool "Network commands"
1707 bootp - boot image via network using BOOTP/TFTP protocol
1711 depends on CMD_BOOTP
1713 Boot image via network using DHCP/TFTP protocol
1719 Boot image via network using DHCPv6/TFTP protocol using IPv6.
1721 Will perform 4-message exchange with DHCPv6 server, requesting
1722 the minimum required options to TFTP boot. Complies with RFC 8415.
1724 config BOOTP_MAY_FAIL
1725 bool "Allow for the BOOTP/DHCP server to not be found"
1726 depends on CMD_BOOTP
1728 If the DHCP server is not found after the configured retry count, the
1729 call will fail instead of starting over. This can be used to fail
1730 over to Link-local IP address configuration if the DHCP server is not
1733 config BOOTP_BOOTPATH
1734 bool "Request & store 'rootpath' from BOOTP/DHCP server"
1736 depends on CMD_BOOTP
1738 Even though the config is called BOOTP_BOOTPATH, it stores the
1739 path in the variable 'rootpath'.
1741 config BOOTP_VENDOREX
1742 bool "Support vendor extensions from BOOTP/DHCP server"
1743 depends on CMD_BOOTP
1745 config BOOTP_BOOTFILESIZE
1746 bool "Request & store 'bootfilesize' from BOOTP/DHCP server"
1747 depends on CMD_BOOTP
1750 bool "Request & store 'dnsip' from BOOTP/DHCP server"
1752 depends on CMD_BOOTP
1754 The primary DNS server is stored as 'dnsip'. If two servers are
1755 returned, you must set BOOTP_DNS2 to store that second server IP
1759 bool "Store 'dnsip2' from BOOTP/DHCP server"
1760 depends on BOOTP_DNS
1762 If a DHCP client requests the DNS server IP from a DHCP server,
1763 it is possible that more than one DNS serverip is offered to the
1764 client. If CONFIG_BOOTP_DNS2 is enabled, the secondary DNS
1765 server IP will be stored in the additional environment
1766 variable "dnsip2". The first DNS serverip is always
1767 stored in the variable "dnsip", when BOOTP_DNS is defined.
1769 config BOOTP_GATEWAY
1770 bool "Request & store 'gatewayip' from BOOTP/DHCP server"
1772 depends on CMD_BOOTP
1774 config BOOTP_HOSTNAME
1775 bool "Request & store 'hostname' from BOOTP/DHCP server"
1777 depends on CMD_BOOTP
1779 The name may or may not be qualified with the local domain name.
1781 config BOOTP_PREFER_SERVERIP
1782 bool "serverip variable takes precedent over DHCP server IP."
1783 depends on CMD_BOOTP
1785 By default a BOOTP/DHCP reply will overwrite the 'serverip' variable.
1787 With this option enabled, the 'serverip' variable in the environment
1788 takes precedence over DHCP server IP and will only be set by the DHCP
1789 server if not already set in the environment.
1791 config BOOTP_SUBNETMASK
1792 bool "Request & store 'netmask' from BOOTP/DHCP server"
1794 depends on CMD_BOOTP
1796 config BOOTP_NISDOMAIN
1797 bool "Request & store 'nisdomain' from BOOTP/DHCP server"
1798 depends on CMD_BOOTP
1800 config BOOTP_NTPSERVER
1801 bool "Request & store 'ntpserverip' from BOOTP/DHCP server"
1802 depends on CMD_BOOTP
1804 config BOOTP_TIMEOFFSET
1805 bool "Request & store 'timeoffset' from BOOTP/DHCP server"
1806 depends on CMD_BOOTP && CMD_SNTP
1811 Selecting this will allow capturing all Ethernet packets and store
1812 them in physical memory in a PCAP formated file,
1813 later to be analyzed by PCAP reader application (IE. WireShark).
1816 bool "Send PXE client arch to BOOTP/DHCP server"
1818 depends on CMD_BOOTP && CMD_PXE
1820 Supported for ARM, ARM64, and x86 for now.
1822 config BOOTP_PXE_CLIENTARCH
1824 depends on BOOTP_PXE
1825 default 0x16 if ARM64
1829 config BOOTP_PXE_DHCP_OPTION
1830 bool "Request & store 'pxe_configfile' from BOOTP/DHCP server"
1831 depends on BOOTP_PXE
1833 config BOOTP_VCI_STRING
1835 depends on CMD_BOOTP
1836 default "U-Boot.armv7" if CPU_V7A || CPU_V7M || CPU_V7R
1837 default "U-Boot.armv8" if ARM64
1838 default "U-Boot.arm" if ARM
1843 config DHCP6_PXE_CLIENTARCH
1845 default 0x16 if ARM64
1849 config DHCP6_PXE_DHCP_OPTION
1850 bool "Request & store 'pxe_configfile' from DHCP6 server"
1852 config DHCP6_ENTERPRISE_ID
1853 int "Enterprise ID to send in DHCPv6 Vendor Class Option"
1862 tftpboot - load file via network using TFTP protocol
1866 depends on CMD_TFTPBOOT
1868 TFTP put command, for uploading files to a server
1872 depends on CMD_TFTPBOOT
1874 Act as a TFTP server and boot the first received file
1876 config NET_TFTP_VARS
1877 bool "Control TFTP timeout and count through environment"
1878 depends on CMD_TFTPBOOT
1881 If set, allows controlling the TFTP timeout through the
1882 environment variable tftptimeout, and the TFTP maximum
1883 timeout count through the variable tftptimeoutcountmax.
1884 If unset, timeout and maximum are hard-defined as 1 second
1885 and 10 timouts per TFTP transfer.
1890 Boot image via network using RARP/TFTP protocol
1895 Boot image via network using NFS protocol.
1898 int "Timeout in milliseconds for NFS mounts"
1902 Timeout in milliseconds used in NFS protocol. If you encounter
1903 "ERROR: Cannot umount" in nfs command, try longer timeout such as
1906 config SYS_DISABLE_AUTOLOAD
1907 bool "Disable automatically loading files over the network"
1908 depends on CMD_BOOTP || CMD_DHCP || CMD_NFS || CMD_RARP
1910 Typically, commands such as "dhcp" will attempt to automatically
1911 load a file from the network, once the initial network configuration
1912 is complete. Enable this option to disable this behavior and instead
1913 require files to be loaded over the network by subsequent commands.
1919 wget is a simple command to download kernel, or other files,
1920 from a http server over TCP.
1926 If set, allows 802.3(clause 22) MII Management functions interface access
1927 The management interface specified in Clause 22 provides
1928 a simple, two signal, serial interface to connect a
1929 Station Management entity and a managed PHY for providing access
1930 to management parameters and services.
1931 The interface is referred to as the MII management interface.
1934 bool "Call mii_init() in the mii command"
1935 depends on CMD_MII && (MPC8XX_FEC || FSLDMAFE || MCFFEC)
1941 If set, allows Enable 802.3(clause 45) MDIO interface registers access
1942 The MDIO interface is orthogonal to the MII interface and extends
1943 it by adding access to more registers through indirect addressing.
1948 Send ICMP ECHO_REQUEST to network host
1953 default y if (CMD_PING && IPV6)
1955 Send ICMPv6 ECHO_REQUEST to network host
1960 Perform CDP network configuration
1966 Synchronize RTC via network
1971 Lookup the IP of a hostname
1973 config CMD_LINK_LOCAL
1977 Acquire a network IP address using the link-local protocol
1983 Manually configure the attached NIC via NC-SI.
1984 Normally this happens automatically before other network
1987 config IPV6_ROUTER_DISCOVERY
1988 bool "Do IPv6 router discovery"
1991 Will automatically perform router solicitation on first IPv6
1998 Allow control of L2 Ethernet switch commands. These are supported
1999 by the vsc9953 Ethernet driver at present. Sub-commands allow
2000 operations such as enabling / disabling a port and
2001 viewing/maintaining the filtering database (FDB)
2007 Boot image via network using PXE protocol
2012 Wait for wake-on-lan Magic Packet
2016 menu "Misc commands"
2021 This is a simple sliding block puzzle game designed by Italian web
2022 developer Gabriele Cirulli. The game's objective is to slide numbered
2023 tiles on a grid to combine them to create a tile with the number
2026 This needs ANSI support on your terminal to work. It is not fully
2027 functional on a video device.
2030 bool "Enable 'bmp' command"
2034 This provides a way to obtain information about a BMP-format image
2035 and to display it. BMP (which presumably stands for BitMaP) is a
2036 file format defined by Microsoft which supports images of various
2037 depths, formats and compression methods. Headers on the file
2038 determine the formats used. This command can be used by first loading
2039 the image into RAM, then using this command to look at it or display
2042 config CMD_BOOTCOUNT
2044 depends on BOOTCOUNT_LIMIT
2046 Enable the bootcount command, which allows interrogation and
2047 reset of the bootcounter.
2050 bool "Enable board-specific commands"
2052 (deprecated: instead, please define a Kconfig option for each command)
2054 Some boards have board-specific commands which are only enabled
2055 during developemnt and need to be turned off for production. This
2056 option provides a way to control this. The commands that are enabled
2057 vary depending on the board.
2059 config CMD_BLOCK_CACHE
2060 bool "blkcache - control and stats for block cache"
2061 depends on BLOCK_CACHE
2062 default y if BLOCK_CACHE
2064 Enable the blkcache command, which can be used to control the
2065 operation of the cache functions.
2066 This is most useful when fine-tuning the operation of the cache
2067 during development, but also allows the cache to be disabled when
2068 it might hurt performance (e.g. when using the ums command).
2071 bool "blkmap - Composable virtual block devices"
2075 Create virtual block devices that are backed by various sources,
2076 e.g. RAM, or parts of an existing block device. Though much more
2077 rudimentary, it borrows a lot of ideas from Linux's device mapper
2081 - Treat a region of RAM as a block device, i.e. a RAM disk. This let's
2082 you extract files from filesystem images stored in RAM (perhaps as a
2083 result of a TFTP transfer).
2084 - Create a virtual partition on an existing device. This let's you
2085 access filesystems that aren't stored at an exact partition
2086 boundary. A common example is a filesystem image embedded in an FIT
2094 Enable the 'button' command which allows to get the status of
2095 buttons supported by the board. The buttonss can be listed with
2096 'button list' and state can be known with 'button <label>'.
2097 Any button drivers can be controlled with this command, e.g.
2101 bool "icache or dcache"
2103 Enable the "icache" and "dcache" commands
2105 config CMD_CONITRACE
2106 bool "conitrace - trace console input codes"
2108 Enable the 'conitrace' command which displays the codes received
2109 from the console input as hexadecimal numbers.
2112 bool "Enable clear screen command 'cls'"
2113 default y if LCD || VIDEO
2115 Enable the 'cls' command which clears the screen contents
2116 on video frame buffer.
2119 bool "efidebug - display/configure UEFI environment"
2120 depends on EFI_LOADER
2121 select EFI_DEVICE_PATH_TO_TEXT
2123 Enable the 'efidebug' command which provides a subset of UEFI
2124 shell utility with simplified functionality. It will be useful
2125 particularly for managing boot parameters as well as examining
2126 various EFI status for debugging.
2128 config CMD_EFICONFIG
2129 bool "eficonfig - provide menu-driven uefi variables maintenance interface"
2130 default y if !HAS_BOARD_SIZE_LIMIT
2131 depends on CMD_BOOTEFI_BOOTMGR
2134 Enable the 'eficonfig' command which provides the menu-driven UEFI
2135 variable maintenance interface.
2137 config CMD_EXCEPTION
2138 bool "exception - raise exception"
2139 depends on ARM || RISCV || SANDBOX || X86
2141 Enable the 'exception' command which allows to raise an exception.
2148 Enable the 'led' command which allows for control of LEDs supported
2149 by the board. The LEDs can be listed with 'led list' and controlled
2150 with led on/off/togle/blink. Any LED drivers can be controlled with
2151 this command, e.g. led_gpio.
2156 Enable the 'ini' command which allows a .ini file to be parsed and
2157 placed into environment variables. Please check the source code for
2158 this as there is no documentation.
2165 Enable the 'date' command for getting/setting the time/date in RTC
2172 Enable the 'rtc' command for low-level access to RTC devices.
2177 Run commands and summarize execution time.
2180 bool "gettime - read elapsed time"
2182 Enable the 'gettime' command which reads the elapsed time since
2183 U-Boot started running. This shows the time in seconds and
2184 milliseconds. See also the 'bootstage' command which provides more
2185 flexibility for boot timing.
2188 bool "pause command"
2190 Delay execution waiting for any user input.
2191 Useful to allow the user to read a failure log.
2196 default y if SANDBOX
2199 Print bytes from the hardware random number generator.
2201 config CMD_KASLRSEED
2205 Set the kaslr-seed in the chosen node with entropy provided by a
2206 hardware random number generator.
2212 Delay execution for some time
2215 bool "support for multiprocessor commands"
2219 This enables commands to bringup different processors
2220 in multiprocessor cases.
2225 Access the system timer.
2231 This provides basic access to the U-Boot's sound support. The main
2232 feature is to play a beep.
2234 sound init - set up sound system
2235 sound play - play a sound
2241 Boot image via local extlinux.conf file
2246 default y if TARGET_QEMU_ARM_32BIT || TARGET_QEMU_ARM_64BIT || \
2247 TARGET_QEMU_X86 || TARGET_QEMU_X86_64
2249 This provides access to the QEMU firmware interface. The main
2250 feature is to allow easy loading of files passed to qemu-system
2251 via -kernel / -initrd
2256 This provides access to Linux PStore with Rammoops backend. The main
2257 feature is to allow to display or save PStore records.
2259 See doc/pstore.rst for more information.
2263 config CMD_PSTORE_MEM_ADDR
2264 hex "Memory Address"
2265 depends on CMD_PSTORE
2267 Base addr used for PStore ramoops memory, should be identical to
2268 ramoops.mem_address parameter used by kernel
2270 config CMD_PSTORE_MEM_SIZE
2272 depends on CMD_PSTORE
2275 Size of PStore ramoops memory, should be identical to ramoops.mem_size
2276 parameter used by kernel, a power of 2 and larger than the sum of the
2279 config CMD_PSTORE_RECORD_SIZE
2280 hex "Dump record size"
2281 depends on CMD_PSTORE
2284 Size of each dump done on oops/panic, should be identical to
2285 ramoops.record_size parameter used by kernel and a power of 2
2288 config CMD_PSTORE_CONSOLE_SIZE
2289 hex "Kernel console log size"
2290 depends on CMD_PSTORE
2293 Size of kernel console log, should be identical to
2294 ramoops.console_size parameter used by kernel and a power of 2
2297 config CMD_PSTORE_FTRACE_SIZE
2298 hex "FTrace log size"
2299 depends on CMD_PSTORE
2302 Size of ftrace log, should be identical to ramoops.ftrace_size
2303 parameter used by kernel and a power of 2
2305 config CMD_PSTORE_PMSG_SIZE
2306 hex "User space message log size"
2307 depends on CMD_PSTORE
2310 Size of user space message log, should be identical to
2311 ramoops.pmsg_size parameter used by kernel and a power of 2
2313 config CMD_PSTORE_ECC_SIZE
2315 depends on CMD_PSTORE
2318 if non-zero, the option enables ECC support and specifies ECC buffer
2319 size in bytes (1 is a special value, means 16 bytes ECC), should be
2320 identical to ramoops.ramoops_ecc parameter used by kernel
2324 source "cmd/mvebu/Kconfig"
2327 bool "terminal - provides a way to attach a serial terminal"
2329 Provides a 'cu'-like serial terminal command. This can be used to
2330 access other serial ports from the system console. The terminal
2331 is very simple with no special processing of characters. As with
2332 cu, you can press ~. (tilde followed by period) to exit.
2335 bool "uuid, guid - generation of unique IDs"
2338 This enables two commands:
2340 uuid - generate random Universally Unique Identifier
2341 guid - generate Globally Unique Identifier based on random UUID
2343 The two commands are very similar except for the endianness of the
2346 config CMD_VIDCONSOLE
2347 bool "lcdputs and setcurs"
2351 Enabling this will provide 'setcurs' and 'lcdputs' commands which
2352 support cursor positioning and drawing strings on the video
2353 console (framebuffer).
2355 The name 'lcdputs' is a bit of a misnomer, but so named because the
2356 video device is often an LCD.
2358 config CMD_SELECT_FONT
2359 bool "select font size"
2361 default y if CONSOLE_TRUETYPE
2363 Enabling this will provide 'font' command.
2364 Allows font selection at runtime.
2368 source "cmd/ti/Kconfig"
2370 config CMD_BOOTSTAGE
2371 bool "Enable the 'bootstage' command"
2372 depends on BOOTSTAGE
2374 Add a 'bootstage' command which supports printing a report
2375 and un/stashing of bootstage data.
2377 menu "Power commands"
2379 bool "Enable Driver Model PMIC command"
2382 This is the pmic command, based on a driver model pmic's API.
2383 Command features are unchanged:
2384 - list - list pmic devices
2385 - pmic dev <id> - show or [set] operating pmic device (NEW)
2386 - pmic dump - dump registers
2387 - pmic read address - read byte of register at address
2388 - pmic write address - write byte to register at address
2389 The only one change for this command is 'dev' subcommand.
2391 config CMD_REGULATOR
2392 bool "Enable Driver Model REGULATOR command"
2393 depends on DM_REGULATOR
2395 This command is based on driver model regulator's API.
2396 User interface features:
2397 - list - list regulator devices
2398 - regulator dev <id> - show or [set] operating regulator device
2399 - regulator info - print constraints info
2400 - regulator status - print operating status
2401 - regulator value <val] <-f> - print/[set] voltage value [uV]
2402 - regulator current <val> - print/[set] current value [uA]
2403 - regulator mode <id> - print/[set] operating mode id
2404 - regulator enable - enable the regulator output
2405 - regulator disable - disable the regulator output
2407 The '-f' (force) option can be used for set the value which exceeds
2408 the limits, which are found in device-tree and are kept in regulator's
2409 uclass plat structure.
2413 menu "Security commands"
2415 bool "Enable the 'aes' command"
2418 This provides a means to encrypt and decrypt data using the AES
2419 (Advanced Encryption Standard). This algorithm uses a symetric key
2420 and is widely used as a streaming cipher. Different key lengths are
2421 supported by the algorithm but this command only supports 128 bits
2425 bool "Enable the 'blob' command"
2426 depends on !MX6ULL && !MX6SLL && !MX6SL
2427 select IMX_HAB if ARCH_MX6 || ARCH_MX7 || ARCH_MX7ULP || ARCH_IMX8M
2429 This is used with the Freescale secure boot mechanism.
2431 Freescale's SEC block has built-in Blob Protocol which provides
2432 a method for protecting user-defined data across system power
2433 cycles. SEC block protects data in a data structure called a Blob,
2434 which provides both confidentiality and integrity protection.
2436 Encapsulating data as a blob
2437 Each time that the Blob Protocol is used to protect data, a
2438 different randomly generated key is used to encrypt the data.
2439 This random key is itself encrypted using a key which is derived
2440 from SoC's non-volatile secret key and a 16 bit Key identifier.
2441 The resulting encrypted key along with encrypted data is called a
2442 blob. The non-volatile secure key is available for use only during
2445 During decapsulation, the reverse process is performed to get back
2449 blob enc - encapsulating data as a cryptgraphic blob
2450 blob dec - decapsulating cryptgraphic blob to get the data
2454 blob enc src dst len km
2456 Encapsulate and create blob of data $len bytes long
2457 at address $src and store the result at address $dst.
2458 $km is the 16 byte key modifier is also required for
2459 generation/use as key for cryptographic operation. Key
2460 modifier should be 16 byte long.
2462 blob dec src dst len km
2464 Decapsulate the blob of data at address $src and
2465 store result of $len byte at addr $dst.
2466 $km is the 16 byte key modifier is also required for
2467 generation/use as key for cryptographic operation. Key
2468 modifier should be 16 byte long.
2471 bool "Support 'hash' command"
2474 This provides a way to hash data in memory using various supported
2475 algorithms (such as SHA1, MD5, CRC32). The computed digest can be
2476 saved to memory or to an environment variable. It is also possible
2477 to verify a hash against data in memory.
2480 bool "Support the 'hvc' command"
2481 depends on ARM_SMCCC
2483 Allows issuing Hypervisor Calls (HVCs). Mostly useful for
2484 development and testing.
2487 bool "Support the 'smc' command"
2488 depends on ARM_SMCCC
2490 Allows issuing Secure Monitor Calls (SMCs). Mostly useful for
2491 development and testing.
2497 Add -v option to verify data against a hash.
2500 bool "scp03 - SCP03 enable and rotate/provision operations"
2503 This command provides access to a Trusted Application
2504 running in a TEE to request Secure Channel Protocol 03
2505 (SCP03) enablement and/or rotation of its SCP03 keys.
2514 bool "Enable the 'tpm' command"
2515 depends on TPM_V1 || TPM_V2
2516 select CMD_TPM_V1 if TPM_V1
2517 select CMD_TPM_V2 if TPM_V2
2519 This provides a means to talk to a TPM from the command line. A wide
2520 range of commands if provided - see 'tpm help' for details. The
2521 command requires a suitable TPM on your board and the correct driver
2527 bool "Enable the 'tpm test' command"
2530 This provides a a series of tests to confirm that the TPMv1.x is
2531 working correctly. The tests cover initialisation, non-volatile RAM,
2532 extend, global lock and checking that timing is within expectations.
2533 The tests pass correctly on Infineon TPMs but may need to be adjusted
2540 menu "Firmware commands"
2542 bool "Enable crosec command"
2546 Enable command-line access to the Chrome OS EC (Embedded
2547 Controller). This provides the 'crosec' command which has
2548 a number of sub-commands for performing EC tasks such as
2549 updating its flash, accessing a small saved context area
2550 and talking to the I2C bus behind the EC (if there is one).
2553 menu "Filesystem commands"
2555 bool "Enable the 'btrsubvol' command"
2558 This enables the 'btrsubvol' command to list subvolumes
2559 of a BTRFS filesystem. There are no special commands for
2560 listing BTRFS directories or loading BTRFS files - this
2561 can be done by the generic 'fs' commands (see CMD_FS_GENERIC)
2562 when BTRFS is enabled (see FS_BTRFS).
2565 bool "Enable the 'cbfs' command"
2568 Define this to enable support for reading from a Coreboot
2569 filesystem. This is a ROM-based filesystem used for accessing files
2570 on systems that use coreboot as the first boot-loader and then load
2571 U-Boot to actually boot the Operating System. Available commands are
2572 cbfsinit, cbfsinfo, cbfsls and cbfsload.
2575 bool "Enable the 'cramfs' command"
2576 depends on FS_CRAMFS
2578 This provides commands for dealing with CRAMFS (Compressed ROM
2579 filesystem). CRAMFS is useful when space is tight since files are
2580 compressed. Two commands are provided:
2582 cramfsls - lists files in a cramfs image
2583 cramfsload - loads a file from a cramfs image
2586 bool "EROFS command support"
2589 Support for the EROFS fs
2592 bool "ext2 command support"
2595 Enables EXT2 FS command
2598 bool "ext4 command support"
2601 Enables EXT4 FS command
2603 config CMD_EXT4_WRITE
2605 bool "ext4 write command support"
2608 Enables EXT4 FS write command
2611 bool "FAT command support"
2614 Support for the FAT fs
2617 bool "SquashFS command support"
2620 Enables SquashFS filesystem commands (e.g. load, ls).
2622 config CMD_FS_GENERIC
2623 bool "filesystem commands"
2625 Enables filesystem commands (e.g. load, ls) that work for multiple
2629 bool "fsuuid command"
2631 Enables fsuuid command for filesystem UUID.
2634 bool "jffs2 command"
2637 Enables commands to support the JFFS2 (Journalling Flash File System
2638 version 2) filesystem. This enables fsload, ls and fsinfo which
2639 provide the ability to load files, list directories and obtain
2640 filesystem information.
2643 string "Default device for JFFS2"
2644 depends on CMD_JFFS2
2647 The default device to use with the jffs2 command.
2649 config JFFS2_PART_OFFSET
2650 hex "Default offset within flash to locate the JFFS2 image"
2651 depends on CMD_JFFS2
2654 The default offset within flash to locate the JFFS2 image.
2656 config JFFS2_PART_SIZE
2657 hex "Default size of JFFS2 partition"
2658 depends on CMD_JFFS2
2661 The default size of the JFFS2 partition
2664 bool "MTD partition support"
2667 MTD partitioning tool support.
2668 It is strongly encouraged to avoid using this command
2669 anymore along with 'sf', 'nand', 'onenand'. One can still
2670 declare the partitions in the mtdparts environment variable
2671 but better use the MTD stack and the 'mtd' command instead.
2673 config CMD_MTDPARTS_SPREAD
2674 bool "Padd partition size to take account of bad blocks"
2675 depends on CMD_MTDPARTS
2677 This enables the 'spread' sub-command of the mtdparts command.
2678 This command will modify the existing mtdparts variable by increasing
2679 the size of the partitions such that 1) each partition's net size is
2680 at least as large as the size specified in the mtdparts variable and
2681 2) each partition starts on a good block.
2683 config CMD_MTDPARTS_SHOW_NET_SIZES
2684 bool "Show net size (w/o bad blocks) of partitions"
2685 depends on CMD_MTDPARTS
2687 Adds two columns to the printed partition table showing the
2688 effective usable size of a partition, if bad blocks are taken
2691 config MTDIDS_DEFAULT
2692 string "Default MTD IDs"
2693 depends on MTD || SPI_FLASH
2694 depends on !SYS_MTDPARTS_RUNTIME
2696 Defines a default MTD IDs list for use with MTD partitions in the
2697 Linux MTD command line partitions format.
2699 config MTDPARTS_DEFAULT
2700 string "Default MTD partition scheme"
2701 depends on MTD || SPI_FLASH
2702 depends on !SYS_MTDPARTS_RUNTIME
2704 Defines a default MTD partitioning scheme in the Linux MTD command
2705 line partitions format
2708 bool "reiser - Access to reiserfs filesystems"
2710 This provides two commands which operate on a resierfs filesystem,
2711 commonly used some years ago:
2713 reiserls - list files
2714 reiserload - load a file
2717 bool "yaffs2 - Access of YAFFS2 filesystem"
2721 This provides commands for accessing a YAFFS2 filesystem. Yet
2722 Another Flash Filesystem 2 is a filesystem designed specifically
2723 for NAND flash. It incorporates bad-block management and ensures
2724 that device writes are sequential regardless of filesystem
2728 bool "zfs - Access of ZFS filesystem"
2730 This provides commands to accessing a ZFS filesystem, commonly used
2731 on Solaris systems. Two sub-commands are provided:
2733 zfsls - list files in a directory
2734 zfsload - load a file
2736 See doc/README.zfs for more details.
2740 menu "Debug commands"
2742 config CMD_CBSYSINFO
2745 default y if SYS_COREBOOT
2747 This provides information about the coreboot sysinfo table stored in
2748 memory by coreboot before jumping to U-Boot. It can be useful for
2749 debugging the beaaviour of coreboot or U-Boot.
2752 bool "cyclic - Show information about cyclic functions"
2756 This enables the 'cyclic' command which provides information about
2757 cyclic execution functions. This infrastructure allows registering
2758 functions to be executed cyclically, e.g. every 100ms. These commands
2761 cyclic list - list cyclic functions
2762 cyclic cyclic demo <cycletime_ms> <delay_us> - register cyclic
2765 See doc/develop/cyclic.rst for more details.
2768 bool "diag - Board diagnostics"
2770 This command provides access to board diagnostic tests. These are
2771 called Power-on Self Tests (POST). The command allows listing of
2772 available tests and running either all the tests, or specific tests
2776 bool "event - Show information about events"
2778 default y if EVENT_DEBUG
2780 This enables the 'event' command which provides information about
2781 events and event-handler routines. This can help to device event
2785 bool "irq - Show information about interrupts"
2786 depends on !ARM && !MIPS && !RISCV && !SH
2788 This enables two commands:
2790 interrupts - enable or disable interrupts
2791 irqinfo - print device-specific interrupt information
2794 bool "kgdb - Allow debugging of U-Boot with gdb"
2797 This enables a 'kgdb' command which allows gdb to connect to U-Boot
2798 over a serial link for debugging purposes. This allows
2799 single-stepping, inspecting variables, etc. This is supported only
2800 on PowerPC at present.
2803 bool "log - Generation, control and access to logging"
2807 This provides access to logging features. It allows the output of
2808 log data to be controlled to a limited extent (setting up the default
2809 maximum log level for emitting of records). It also provides access
2810 to a command used for testing the log system.
2813 bool "trace - Support tracing of function calls and timing"
2817 Enables a command to control using of function tracing within
2818 U-Boot. This allows recording of call traces including timing
2819 information. The command can write data to memory for exporting
2820 for analysis (e.g. using bootchart). See doc/README.trace for full
2824 bool "avb - Android Verified Boot 2.0 operations"
2825 depends on AVB_VERIFY
2827 Enables a "avb" command to perform verification of partitions using
2828 Android Verified Boot 2.0 functionality. It includes such subcommands:
2829 avb init - initialize avb2 subsystem
2830 avb read_rb - read rollback index
2831 avb write_rb - write rollback index
2832 avb is_unlocked - check device lock state
2833 avb get_uuid - read and print uuid of a partition
2834 avb read_part - read data from partition
2835 avb read_part_hex - read data from partition and output to stdout
2836 avb write_part - write data to partition
2837 avb verify - run full verification chain
2839 config CMD_STACKPROTECTOR_TEST
2840 bool "Test command for stack protector"
2841 depends on STACKPROTECTOR
2843 Enable stackprot_test command
2844 The stackprot_test command will force a stack overrun to test
2845 the stack smashing detection mechanisms.
2850 tristate "Enable UBI - Unsorted block images commands"
2853 UBI is a software layer above MTD layer which admits use of LVM-like
2854 logical volumes on top of MTD devices, hides some complexities of
2855 flash chips like wear and bad blocks and provides some other useful
2856 capabilities. Please, consult the MTD web site for more details
2857 (www.linux-mtd.infradead.org). Activate this option if you want
2858 to use U-Boot UBI commands.
2859 It is also strongly encouraged to also enable CONFIG_MTD to get full
2862 config CMD_UBI_RENAME
2863 bool "Enable rename"
2866 Enable a "ubi" command to rename ubi volume:
2867 ubi rename <oldname> <newname>
2870 tristate "Enable UBIFS - Unsorted block images filesystem commands"
2872 default y if CMD_UBI
2876 UBIFS is a file system for flash devices which works on top of UBI.
2878 config MMC_SPEED_MODE_SET
2879 bool "set speed mode using mmc command"
2882 Enable setting speed mode using mmc rescan and mmc dev commands.
2883 The speed mode is provided as the last argument in these commands
2884 and is indicated using the index from enum bus_mode in
2885 include/mmc.h. A speed mode can be set only if it has already
2886 been enabled in the device tree.
2889 bool "Amlogic Meson commands"
2890 depends on ARCH_MESON
2893 Enable useful commands for the Meson Soc family developed by Amlogic Inc.
projects / u-boot.git / blob