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
183 Print GPL license text
188 Provides access to the Intel Power-Management Controller (PMC) so
189 that its state can be examined. This does not currently support
190 changing the state but it is still useful for debugging and seeing
199 config CMD_TLV_EEPROM
201 depends on I2C_EEPROM
204 Display and program the system EEPROM data block in ONIE Tlvinfo
205 format. TLV stands for Type-Length-Value.
207 config SPL_CMD_TLV_EEPROM
208 bool "tlv_eeprom for SPL"
209 depends on SPL_I2C_EEPROM
210 select SPL_DRIVERS_MISC
213 Read system EEPROM data block in ONIE Tlvinfo format from SPL.
217 depends on RISCV_SMODE && SBI_V02
219 Display information about the SBI implementation.
229 Run the command stored in the environment "bootcmd", i.e.
230 "bootd" does the same thing as "run bootcmd".
236 Boot an application image from the memory.
238 config CMD_BOOTM_PRE_LOAD
239 bool "enable pre-load on bootm"
241 depends on IMAGE_PRE_LOAD
244 Enable support of stage pre-load for the bootm command.
245 This stage allow to check or modify the image provided
246 to the bootm command.
251 default y if BOOTSTD_FULL
253 Support listing available bootdevs (boot devices) which can provide an
254 OS to boot, as well as showing information about a particular one.
256 This command is not necessary for bootstd to work.
263 Support scanning for bootflows available with the bootdevs. The
264 bootflows can optionally be booted.
266 config CMD_BOOTFLOW_FULL
267 bool "bootflow - extract subcommands"
268 depends on BOOTSTD_FULL
271 Add the ability to list the available bootflows, select one and obtain
272 information about it.
274 This command is not necessary for bootstd to work.
279 default y if BOOTSTD_FULL
281 Support listing available bootmethds (methods used to boot an
282 Operating System), as well as selecting the order that the bootmeths
285 This command is not necessary for bootstd to work.
288 bool "Support booting UEFI FIT images"
289 depends on CMD_BOOTEFI && CMD_BOOTM && FIT
292 Support booting UEFI FIT images via the bootm command.
297 Boot the Linux zImage
301 depends on ARM64 || RISCV
304 Boot an AArch64 Linux Kernel image from memory.
307 bool "Support booting Linux OS images"
308 depends on CMD_BOOTM || CMD_BOOTZ || CMD_BOOTI
311 Support booting the Linux kernel directly via a command such as bootm
315 bool "Support booting NetBSD (non-EFI) loader images"
319 Support booting NetBSD via the bootm command.
321 config BOOTM_OPENRTOS
322 bool "Support booting OPENRTOS / FreeRTOS images"
325 Support booting OPENRTOS / FreeRTOS via the bootm command.
328 bool "Support booting Enea OSE images"
329 depends on (ARM && (ARM64 || CPU_V7A || CPU_V7R) || SANDBOX || PPC || X86)
332 Support booting Enea OSE images via the bootm command.
335 bool "Support booting Plan9 OS images"
339 Support booting Plan9 images via the bootm command.
342 bool "Support booting RTEMS OS images"
346 Support booting RTEMS images via the bootm command.
349 bool "Support read SEAMA NAND images"
350 depends on MTD_RAW_NAND
352 Support reading NAND Seattle Image (SEAMA) images.
355 bool "vbe - Verified Boot for Embedded"
356 depends on BOOTMETH_VBE
357 default y if BOOTSTD_FULL
359 Provides various subcommands related to VBE, such as listing the
360 available methods, looking at the state and changing which method
361 is used to boot. Updating the parameters is not currently
365 bool "Support booting VxWorks OS images"
369 Support booting VxWorks images via the bootm command.
372 hex "Maximum size of a decompresed OS image"
373 depends on CMD_BOOTM || CMD_BOOTI || CMD_BOOTZ || \
374 LEGACY_IMAGE_FORMAT || SPL_LEGACY_IMAGE_FORMAT
375 default 0x4000000 if PPC || ARM64
376 default 0x1000000 if X86 || ARCH_MX6 || ARCH_MX7
379 This is the maximum size of the buffer that is used to decompress the OS
380 image in to, if passing a compressed image to bootm/booti/bootz.
384 depends on EFI_LOADER
387 Boot an EFI image from memory.
389 config CMD_BOOTEFI_HELLO_COMPILE
390 bool "Compile a standard EFI hello world binary for testing"
391 depends on CMD_BOOTEFI && !CPU_V7M
394 This compiles a standard EFI hello world application with U-Boot so
395 that it can be used with the test/py testing framework. This is useful
396 for testing that EFI is working at a basic level, and for bringing
397 up EFI support on a new architecture.
399 No additional space will be required in the resulting U-Boot binary
400 when this option is enabled.
402 config CMD_BOOTEFI_HELLO
403 bool "Allow booting a standard EFI hello world for testing"
404 depends on CMD_BOOTEFI_HELLO_COMPILE
405 default y if CMD_BOOTEFI_SELFTEST
407 This adds a standard EFI hello world application to U-Boot so that
408 it can be used with the 'bootefi hello' command. This is useful
409 for testing that EFI is working at a basic level, and for bringing
410 up EFI support on a new architecture.
412 source lib/efi_selftest/Kconfig
419 Add an ANSI terminal boot menu command.
424 Android DTB/DTBO image manipulation commands. Read dtb/dtbo files from
425 image into RAM, dump image structure information, etc. Those dtb/dtbo
426 files should be merged in one dtb further, which needs to be passed to
427 the kernel, as part of a boot process.
431 depends on ANDROID_BOOT_IMAGE
433 Android Boot Image manipulation commands. Allows one to extract
434 images contained in boot.img, like kernel, ramdisk, dtb, etc, and
435 obtain corresponding meta-information from boot.img.
437 See doc/android/boot-image.rst for details.
440 bool "cedit - Configuration editor"
444 Provides a command to allow editing of board configuration and
445 providing a UI for the user to adjust settings. Subcommands allow
446 loading and saving of configuration as well as showing an editor.
449 bool "bootelf, bootvx"
453 Boot an ELF/vxWorks image from the memory.
456 bool "Flattened Device Tree utility commands"
460 Do FDT related setup before booting into the Operating System.
462 config SUPPORT_EXTENSION_SCAN
466 bool "Extension board management command"
468 depends on SUPPORT_EXTENSION_SCAN
470 Enables the "extension" command, which allows to detect
471 extension boards connected to the system, and apply
472 corresponding Device Tree overlays.
478 Start an application at a given address.
484 Run the command in the given environment variable.
490 Print header information for application image.
495 List all images found in flash
501 Extract a part of a multi-image.
506 Print file as hexdump to standard output
509 bool "spl export - Export boot information for Falcon boot"
512 Falcon mode allows booting directly from SPL into an Operating
513 System such as Linux, thus skipping U-Boot proper. See
514 doc/README.falcon for full information about how to use this
517 config CMD_SPL_NAND_OFS
518 hex "Offset of OS args or dtb for Falcon-mode NAND boot"
519 depends on CMD_SPL && (TPL_NAND_SUPPORT || SPL_NAND_SUPPORT)
522 This provides the offset of the command line arguments for Linux
523 when booting from NAND in Falcon mode. See doc/README.falcon
524 for full information about how to use this option (and also see
525 board/gateworks/gw_ventana/README for an example).
527 config CMD_SPL_NOR_OFS
528 hex "Offset of OS args or dtb for Falcon-mode NOR boot"
529 depends on CMD_SPL && SPL_NOR_SUPPORT
532 This provides the offset of the command line arguments or dtb for
533 Linux when booting from NOR in Falcon mode.
535 config CMD_SPL_WRITE_SIZE
536 hex "Size of argument area"
540 This provides the size of the command-line argument area in NAND
541 flash used by Falcon-mode boot. See the documentation until CMD_SPL
544 config CMD_THOR_DOWNLOAD
545 bool "thor - TIZEN 'thor' download"
548 Implements the 'thor' download protocol. This is a way of
549 downloading a software update over USB from an attached host.
550 There is no documentation about this within the U-Boot source code
551 but you should be able to find something on the interwebs.
553 config THOR_RESET_OFF
554 bool "thor: Disable reset on completion"
555 depends on CMD_THOR_DOWNLOAD
558 bool "zboot - x86 boot command"
560 With x86 machines it is common to boot a bzImage file which
561 contains both a kernel and a setup.bin file. The latter includes
562 configuration information from the dark ages which x86 boards still
563 need to pick things out of.
565 Consider using FIT in preference to this since it supports directly
566 booting both 32- and 64-bit kernels, as well as secure boot.
567 Documentation is available in doc/uImage.FIT/x86-fit-boot.txt
571 menu "Environment commands"
574 bool "ask for env variable"
576 Ask for environment variable
594 Edit environment variable.
599 Allow for searching environment variables
605 Save all environment variables into the compiled-in persistent
610 depends on CMD_SAVEENV
612 Erase environment variables from the compiled-in persistent
615 config CMD_ENV_EXISTS
619 Check if a variable is defined in the environment for use in
622 config CMD_ENV_CALLBACK
623 bool "env callbacks - print callbacks and their associated variables"
625 Some environment variable have callbacks defined by
626 U_BOOT_ENV_CALLBACK. These are called when the variable changes.
627 For example changing "baudrate" adjust the serial baud rate. This
628 command lists the currently defined callbacks.
631 bool "env flags -print variables that have non-default flags"
633 Some environment variables have special flags that control their
634 behaviour. For example, serial# can only be written once and cannot
635 be deleted. This command shows the variables that have special
638 config CMD_NVEDIT_EFI
639 bool "env [set|print] -e - set/print UEFI variables"
640 depends on EFI_LOADER
643 UEFI variables are encoded as some form of U-Boot variables.
644 If enabled, we are allowed to set/print UEFI variables using
645 "env" command with "-e" option without knowing details.
647 config CMD_NVEDIT_INDIRECT
648 bool "env indirect - Sets environment value from another"
650 config CMD_NVEDIT_INFO
651 bool "env info - print or evaluate environment information"
653 Print environment information:
654 - env_valid : is environment valid
655 - env_ready : is environment imported into hash table
656 - env_use_default : is default environment used
658 This command can be optionally used for evaluation in scripts:
659 [-d] : evaluate whether default environment is used
660 [-p] : evaluate whether environment can be persisted
662 The result of multiple evaluations will be combined with AND.
664 config CMD_NVEDIT_LOAD
667 Load all environment variables from the compiled-in persistent
670 config CMD_NVEDIT_SELECT
673 Select the compiled-in persistent storage of environment variables.
677 menu "Memory commands"
682 Compute binary operations (xor, or, and) of byte arrays of arbitrary
683 size from memory and store the result in memory or the environment.
687 default y if BLOBLIST
689 Show information about the bloblist, a collection of binary blobs
690 held in memory that persist between SPL and U-Boot. In the case of
691 x86 devices the bloblist can be used to hold ACPI tables so that they
692 remain available in memory.
705 Add -v option to verify data against a crc32 checksum.
708 bool "eeprom - EEPROM subsystem"
710 (deprecated, needs conversion to driver model)
711 Provides commands to read and write EEPROM (Electrically Erasable
712 Programmable Read Only Memory) chips that are connected over an
715 config CMD_EEPROM_LAYOUT
716 bool "Enable layout-aware eeprom commands"
717 depends on CMD_EEPROM
719 (deprecated, needs conversion to driver model)
720 When enabled, additional eeprom sub-commands become available.
722 eeprom print - prints the contents of the eeprom in a human-readable
723 way (eeprom layout fields, and data formatted to be fit for human
726 eeprom update - allows user to update eeprom fields by specifying
727 the field name, and providing the new data in a human readable format
728 (same format as displayed by the eeprom print command).
730 Both commands can either auto detect the layout, or be told which
734 __weak int parse_layout_version(char *str)
735 - override to provide your own layout name parsing
736 __weak void __eeprom_layout_assign(struct eeprom_layout *layout,
738 - override to setup the layout metadata based on the version
739 __weak int eeprom_layout_detect(unsigned char *data)
740 - override to provide your own algorithm for detecting layout
743 - contains various printing and updating functions for common
744 types of eeprom fields. Can be used for defining
747 config EEPROM_LAYOUT_HELP_STRING
748 string "Tells user what layout names are supported"
749 depends on CMD_EEPROM_LAYOUT
750 default "<not defined>"
752 Help printed with the LAYOUT VERSIONS part of the 'eeprom'
755 config SYS_I2C_EEPROM_BUS
756 int "I2C bus of the EEPROM device."
757 depends on CMD_EEPROM
760 config SYS_I2C_EEPROM_ADDR_LEN
761 int "Length in bytes of the EEPROM memory array address"
762 depends on CMD_EEPROM || ID_EEPROM
766 Note: This is NOT the chip address length!
768 config SYS_EEPROM_SIZE
769 depends on CMD_EEPROM
770 int "Size in bytes of the EEPROM device"
773 config SYS_EEPROM_PAGE_WRITE_BITS
774 int "Number of bits used to address bytes in a single page"
775 depends on CMD_EEPROM
778 The EEPROM page size is 2^SYS_EEPROM_PAGE_WRITE_BITS.
779 A 64 byte page, for example would require six bits.
781 config SYS_EEPROM_PAGE_WRITE_DELAY_MS
782 int "Number of milliseconds to delay between page writes"
783 depends on CMD_EEPROM || CMD_I2C
789 Infinite write loop on address range
795 Compute MD5 checksum.
799 depends on CMD_MD5SUM
801 Add -v option to verify data against an MD5 checksum.
806 Display memory information.
809 bool "md, mm, nm, mw, cp, cmp, base, loop"
814 mm - memory modify (auto-incrementing address)
815 nm - memory modify (constant address)
816 mw - memory write (fill)
819 base - print or set address offset
820 loop - initialize loop on address range
822 config CMD_MEM_SEARCH
823 bool "ms - Memory search"
825 Memory-search command
827 This allows searching through a region of memory looking for hex
828 data (byte, 16-bit word, 32-bit long, also 64-bit on machines that
829 support it). It is also possible to search for a string. The
830 command accepts a memory range and a list of values to search for.
831 The values need to appear in memory in the same order they are given
832 in the command. At most 10 matches can be returned at a time, but
833 pressing return will show the next 10 matches. Environment variables
834 are set for use with scripting (memmatches, memaddr, mempos).
837 bool "Enable cyclic md/mw commands"
838 depends on CMD_MEMORY
840 Add the "mdc" and "mwc" memory commands. These are cyclic
845 This command will print 4 bytes (10,11,12,13) each 500 ms.
847 => mwc.l 100 12345678 10
848 This command will write 12345678 to address 100 all 10 ms.
853 depends on CMD_MEMORY && (LIB_RAND || LIB_HW_RAND)
855 random - fill memory with random data
860 Simple RAM read/write test.
864 config SYS_ALT_MEMTEST
865 bool "Alternative test"
867 Use a more complete alternative memory test.
871 config SYS_ALT_MEMTEST_BITFLIP
875 The alternative memory test includes bitflip test since 2020.07.
876 The bitflip test significantly increases the overall test time.
877 Bitflip test can optionally be disabled here.
881 config SYS_MEMTEST_START
882 hex "default start address for mtest"
885 This is the default start address for mtest for simple read/write
886 test. If no arguments are given to mtest, default address is used
889 config SYS_MEMTEST_END
890 hex "default end address for mtest"
893 This is the default end address for mtest for simple read/write
894 test. If no arguments are given to mtest, default address is used
903 Compute SHA1 checksum.
905 config SHA1SUM_VERIFY
907 depends on CMD_SHA1SUM
909 Add -v option to verify data against a SHA1 checksum.
912 bool "strings - display strings in memory"
914 This works similarly to the Unix 'strings' command except that it
915 works with a memory range. String of printable characters found
916 within the range are displayed. The minimum number of characters
917 for a sequence to be considered a string can be provided.
921 menu "Compression commands"
925 default y if CMD_BOOTI
928 Support decompressing an LZMA (Lempel-Ziv-Markov chain algorithm)
933 default y if CMD_BOOTI
936 Support decompressing an LZ4 image from memory region.
940 default y if CMD_BOOTI
943 Uncompress a zip-compressed memory region.
947 select GZIP_COMPRESSED
949 Compress a memory region with zlib deflate method.
953 menu "Device access commands"
956 bool "Arm FF-A test command"
957 depends on ARM_FFA_TRANSPORT
959 Provides a test command for the FF-A support
961 - Listing the partition(s) info
962 - Sending a data pattern to the specified partition
963 - Displaying the arm_ffa device info
966 #depends on FLASH_CFI_DRIVER
969 ARM Ltd reference designs flash partition access
972 bool "adc - Access Analog to Digital Converters info and data"
974 depends on DM_REGULATOR
976 Shows ADC device info and permit printing one-shot analog converted
977 data from a named Analog to Digital Converter.
982 depends on PARTITIONS
984 Read/modify/write the fields of Bootloader Control Block, usually
985 stored on the flash "misc" partition with its structure defined in:
986 https://android.googlesource.com/platform/bootable/recovery/+/master/
987 bootloader_message/include/bootloader_message/bootloader_message.h
989 Some real-life use-cases include (but are not limited to):
990 - Determine the "boot reason" (and act accordingly):
991 https://source.android.com/devices/bootloader/boot-reason
992 - Get/pass a list of commands from/to recovery:
993 https://android.googlesource.com/platform/bootable/recovery
994 - Inspect/dump the contents of the BCB fields
997 bool "bind/unbind - Bind or unbind a device to/from a driver"
999 default y if USB_ETHER
1001 Bind or unbind a device to/from a driver from the command line.
1002 This is useful in situations where a device may be handled by several
1003 drivers. For example, this can be used to bind a UDC to the usb ether
1004 gadget driver from the command line.
1007 bool "clk - Show clock frequencies"
1010 Shows clock frequences by calling a sock_clk_dump() hook function.
1011 This is depreated in favour of using the CLK uclass and accessing
1012 clock values from associated drivers. However currently no command
1016 bool "demo - Demonstration commands for driver model"
1019 Provides a 'demo' command which can be used to play around with
1020 driver model. To use this properly you will need to enable one or
1021 both of the demo devices (DM_DEMO_SHAPE and DM_DEMO_SIMPLE).
1022 Otherwise you will always get an empty list of devices. The demo
1023 devices are defined in the sandbox device tree, so the easiest
1024 option is to use sandbox and pass the -d point to sandbox's
1031 Enables the command "dfu" which is used to have U-Boot create a DFU
1032 class device via USB. This command requires that the "dfu_alt_info"
1033 environment variable be set and define the alt settings to expose to
1037 bool "dm - Access to driver model information"
1040 Provides access to driver model data structures and information,
1041 such as a list of devices, list of uclasses and the state of each
1042 device (e.g. activated). This is not required for operation, but
1043 can be useful to see the state of driver model for debugging or
1047 bool "fastboot - Android fastboot support"
1050 This enables the command "fastboot" which enables the Android
1051 fastboot mode for the platform. Fastboot is a protocol for
1052 downloading images, flashing and device control used on
1053 Android devices. Fastboot requires either the network stack
1054 enabled or support for acting as a USB device.
1056 See doc/android/fastboot.rst for more information.
1059 bool "flinfo, erase, protect"
1061 depends on MTD || FLASH_CFI_DRIVER || MTD_NOR_FLASH
1064 flinfo - print FLASH memory information
1065 erase - FLASH memory
1066 protect - enable or disable FLASH write protection
1075 config CMD_FPGA_LOADBP
1076 bool "fpga loadbp - load partial bitstream (Xilinx only)"
1079 Supports loading an FPGA device from a bitstream buffer containing
1080 a partial bitstream.
1082 config CMD_FPGA_LOADFS
1083 bool "fpga loadfs - load bitstream from FAT filesystem (Xilinx only)"
1086 Supports loading an FPGA device from a FAT filesystem.
1088 config CMD_FPGA_LOADMK
1089 bool "fpga loadmk - load bitstream from image"
1092 Supports loading an FPGA device from a image generated by mkimage.
1094 config CMD_FPGA_LOADP
1095 bool "fpga loadp - load partial bitstream"
1098 Supports loading an FPGA device from a bitstream buffer containing
1099 a partial bitstream.
1101 config CMD_FPGA_LOAD_SECURE
1102 bool "fpga loads - loads secure bitstreams"
1104 select FPGA_LOAD_SECURE
1106 Enables the fpga loads command which is used to load secure
1107 (authenticated or encrypted or both) bitstreams on to FPGA.
1110 bool "fpgad - dump FPGA registers"
1112 (legacy, needs conversion to driver model)
1113 Provides a way to dump FPGA registers by calling the board-specific
1114 fpga_get_reg() function. This functions similarly to the 'md'
1118 bool "fuse - support for the fuse subssystem"
1120 (deprecated - needs conversion to driver model)
1121 This allows reading, sensing, programming or overriding fuses
1122 which control the behaviour of the device. The command uses the
1130 config CMD_GPIO_READ
1131 bool "gpio read - save GPIO value to variable"
1134 Enables the 'gpio read' command that saves the value
1135 of a GPIO pin to a variable.
1141 Control PWM channels, this allows invert/config/enable/disable PWM channels.
1144 bool "GPT (GUID Partition Table) command"
1145 select EFI_PARTITION
1146 select PARTITION_UUIDS
1149 Enable the 'gpt' command to ready and write GPT style partition
1153 bool "GPT Random UUID generation"
1156 Enable the generation of partitions with random UUIDs if none
1159 config CMD_GPT_RENAME
1160 bool "GPT partition renaming commands"
1163 Enables the 'gpt' command to interchange names on two GPT
1164 partitions via the 'gpt swap' command or to rename single
1165 partitions via the 'rename' command.
1168 bool "ide - Support for IDE drivers"
1171 Provides an 'ide' command which allows accessing the IDE drive,
1172 resetting the IDE interface, printing the partition table and
1173 geting device info. It also enables the 'diskboot' command which
1174 permits booting from an IDE drive.
1177 bool "io - Support for performing I/O accesses"
1179 Provides an 'iod' command to display I/O space and an 'iow' command
1180 to write values to the I/O space. This can be useful for manually
1181 checking the state of devices during boot when debugging device
1185 bool "iotrace - Support for tracing I/O activity"
1187 Provides an 'iotrace' command which supports recording I/O reads and
1188 writes in a trace buffer in memory . It also maintains a checksum
1189 of the trace records (even if space is exhausted) so that the
1190 sequence of I/O accesses can be verified.
1192 When debugging drivers it is useful to see what I/O accesses were
1193 done and in what order.
1195 Even if the individual accesses are of little interest it can be
1196 useful to verify that the access pattern is consistent each time
1197 an operation is performed. In this case a checksum can be used to
1198 characterise the operation of a driver. The checksum can be compared
1199 across different runs of the operation to verify that the driver is
1202 In particular, when performing major refactoring of the driver, where
1203 the access pattern should not change, the checksum provides assurance
1204 that the refactoring work has not broken the driver.
1206 This works by sneaking into the io.h heder for an architecture and
1207 redirecting I/O accesses through iotrace's tracing mechanism.
1209 For now no commands are provided to examine the trace buffer. The
1210 format is fairly simple, so 'md' is a reasonable substitute.
1212 Note: The checksum feature is only useful for I/O regions where the
1213 contents do not change outside of software control. Where this is not
1214 suitable you can fall back to manually comparing the addresses. It
1215 might be useful to enhance tracing to only checksum the accesses and
1216 not the data read/written.
1226 bool "w1 - Support for Dallas 1-Wire protocol"
1228 Dallas 1-wire protocol support
1234 Load a binary file over serial line.
1239 Load a binary over memory mapped.
1242 bool "loads - Load a file over serial in S-Record format"
1245 Load an S-Record file over serial line
1248 bool "Echo all characters received during a loads back to console"
1249 depends on CMD_LOADS
1251 If enabled, all characters received during a serial download (using
1252 the "loads" command) are echoed back. This might be needed by some
1253 terminal emulations (like "cu"), but may as well just take time on
1254 others. This sets the initial value of the "loads_echo" environment
1258 bool "saves - Save a file over serial in S-Record format"
1259 depends on CMD_LOADS
1261 Provides a way to save a binary file using the Motorola S-Record
1262 format over the serial line.
1264 config SYS_LOADS_BAUD_CHANGE
1265 bool "Enable a temporary baudrate change during loads/saves command"
1266 depends on CMD_LOADS || CMD_SAVES
1268 config CMD_LOADXY_TIMEOUT
1269 int "loadxy_timeout"
1273 Initial timeout for loadx and loady commands. Zero means infinity.
1277 bool "lsblk - list block drivers and devices"
1279 Print list of available block device drivers, and for each, the list
1280 of known block devices.
1283 bool "MBR (Master Boot Record) command"
1284 select DOS_PARTITION
1286 Enable the 'mbr' command to ready and write MBR (Master Boot Record)
1287 style partition tables.
1293 Enable the command "misc" for accessing miscellaneous devices with
1294 a MISC uclass driver. The command provides listing all MISC devices
1295 as well as read and write functionalities via their drivers.
1301 MMC memory mapped support.
1305 config CMD_BKOPS_ENABLE
1306 bool "mmc bkops enable"
1309 Enable command for setting manual background operations handshake
1310 on a eMMC device. The feature is optionally available on eMMC devices
1311 conforming to standard >= 4.41.
1314 bool "Enable support for RPMB in the mmc command"
1315 depends on SUPPORT_EMMC_RPMB
1317 Enable the commands for reading, writing and programming the
1318 key for the Replay Protection Memory Block partition in eMMC.
1320 config CMD_MMC_SWRITE
1322 depends on MMC_WRITE
1325 Enable support for the "mmc swrite" command to write Android sparse
1334 Enable storage cloning over block devices, useful for
1335 initial flashing by external block device without network
1338 config CMD_OPTEE_RPMB
1339 bool "Enable read/write support on RPMB via OPTEE"
1340 depends on SUPPORT_EMMC_RPMB && OPTEE
1342 Enable the commands for reading, writing persistent named values
1343 in the Replay Protection Memory Block partition in eMMC by
1344 using Persistent Objects in OPTEE
1349 select MTD_PARTITIONS
1351 MTD commands support.
1355 depends on MULTIPLEXER
1357 List, select, and deselect mux controllers on the fly.
1361 default y if NAND_SUNXI
1362 depends on MTD_RAW_NAND
1367 config CMD_NAND_TRIMFFS
1368 bool "nand write.trimffs"
1369 default y if ARCH_SUNXI
1371 Allows one to skip empty pages when flashing something on a NAND.
1373 config CMD_NAND_LOCK_UNLOCK
1374 bool "nand lock/unlock"
1376 NAND locking support.
1378 config CMD_NAND_TORTURE
1381 NAND torture support.
1390 NVM Express device support
1393 bool "onenand - access to onenand device"
1396 OneNAND is a brand of NAND ('Not AND' gate) flash which provides
1397 various useful features. This command allows reading, writing,
1398 and erasing blocks. It allso provides a way to show and change
1399 bad blocks, and test the device.
1401 config USE_ONENAND_BOARD_INIT
1402 bool "Call onenand_board_init() in the onenand command"
1403 depends on CMD_ONENAND
1408 Enable the 'osd' command which allows to query information from and
1409 write text data to a on-screen display (OSD) device; a virtual device
1410 associated with a display capable of displaying a text overlay on the
1411 display it's associated with..
1415 depends on PARTITIONS
1416 select PARTITION_UUIDS
1418 Read and display information about the partition table on
1422 bool "pci - Access PCI devices"
1424 Provide access to PCI (Peripheral Interconnect Bus), a type of bus
1425 used on some devices to allow the CPU to communicate with its
1426 peripherals. Sub-commands allow bus enumeration, displaying and
1427 changing configuration space and a few other features.
1430 bool "pci_mps - Configure PCI device MPS"
1433 Enables PCI Express Maximum Packet Size (MPS) tuning. This
1434 command configures the PCI Express MPS of each endpoint to the
1435 largest value supported by all devices below the root complex.
1436 The Maximum Read Request Size will not be altered. This method is
1437 the same algorithm as used by Linux pci=pcie_bus_safe.
1440 bool "pinmux - show pins muxing"
1442 default y if PINCTRL
1444 Parse all available pin-controllers and show pins muxing. This
1445 is useful for debug purpoer to check the pin muxing and to know if
1446 a pin is configured as a GPIO or as an alternate function.
1451 Poweroff/Shutdown the system
1454 bool "read - Read binary data from a partition"
1456 Provides low-level access to the data in a partition.
1458 config CMD_REMOTEPROC
1460 depends on REMOTEPROC
1462 Support for Remote Processor control
1465 bool "sata - Access SATA subsystem"
1468 SATA (Serial Advanced Technology Attachment) is a serial bus
1469 standard for connecting to hard drives and other storage devices.
1470 This command provides information about attached devices and allows
1471 reading, writing and other operations.
1473 SATA replaces PATA (originally just ATA), which stands for Parallel AT
1474 Attachment, where AT refers to an IBM AT (Advanced Technology)
1475 computer released in 1984.
1478 bool "scsi - Access to SCSI devices"
1482 This provides a 'scsi' command which provides access to SCSI (Small
1483 Computer System Interface) devices. The command provides a way to
1484 scan the bus, reset the bus, read and write data and get information
1488 bool "sdram - Print SDRAM configuration information"
1490 Provides information about attached SDRAM. This assumed that the
1491 SDRAM has an EEPROM with information that can be read using the
1492 I2C bus. This is only available on some boards.
1496 depends on DM_SPI_FLASH || SPI_FLASH
1497 default y if DM_SPI_FLASH
1502 bool "sf test - Allow testing of SPI flash"
1505 Provides a way to test that SPI flash is working correctly. The
1506 test is destructive, in that an area of SPI flash must be provided
1507 for the test to use. Performance information is also provided,
1508 measuring the performance of reading, writing and erasing in
1509 Mbps (Million Bits Per Second). This value should approximately
1510 equal the SPI bus speed for a single-bit-wide SPI bus, assuming
1511 everything is working properly.
1514 bool "sspi - Command to access spi device"
1517 SPI utility command.
1519 config DEFAULT_SPI_BUS
1520 int "default spi bus used by sspi command"
1524 config DEFAULT_SPI_MODE
1525 hex "default spi mode used by sspi command (see include/spi.h)"
1529 config CMD_TEMPERATURE
1530 bool "temperature - display the temperature from thermal sensors"
1531 depends on DM_THERMAL
1533 Provides a way to list thermal sensors and to get their readings.
1536 bool "tsi148 - Command to access tsi148 device"
1538 This provides various sub-commands to initialise and configure the
1539 Turndra tsi148 device. See the command help for full details.
1542 bool "Enable UFS - Universal Flash Subsystem commands"
1545 "This provides commands to initialise and configure universal flash
1549 bool "universe - Command to set up the Turndra Universe controller"
1551 This allows setting up the VMEbus provided by this controller.
1552 See the command help for full details.
1562 select USB_FUNCTION_SDP
1564 Enables the command "sdp" which is used to have U-Boot emulating the
1565 Serial Download Protocol (SDP) via USB.
1569 depends on USB_FUNCTION_ROCKUSB
1571 Rockusb protocol is widely used by Rockchip SoC based devices. It can
1572 read/write info, image to/from devices. This enable rockusb command
1573 support to communication with rockusb device. for more detail about
1574 this command, please read doc/README.rockusb.
1576 config CMD_USB_MASS_STORAGE
1577 bool "UMS usb mass storage"
1578 depends on USB_GADGET_DOWNLOAD
1579 select USB_FUNCTION_MASS_STORAGE
1580 depends on BLK && USB_GADGET
1582 Enables the command "ums" and the USB mass storage support to the
1583 export a block device: U-Boot, the USB device, acts as a simple
1584 external hard drive plugged on the host USB port.
1586 config CMD_UMS_ABORT_KEYED
1587 bool "UMS abort with any key"
1588 depends on CMD_USB_MASS_STORAGE
1590 Allow interruption of usb mass storage run with any key pressed.
1593 bool "Xen para-virtualized block device"
1597 Xen para-virtualized block device support
1604 VirtIO block device support
1610 This provides commands to control the watchdog timer devices.
1613 bool "write - Write binary data to a partition"
1615 Provides low-level write access to a partition.
1621 Enable the command "axi" for accessing AXI (Advanced eXtensible
1622 Interface) busses, a on-chip interconnect specification for managing
1623 functional blocks in SoC designs, which is also often used in designs
1624 involving FPGAs (e.g. communication with IP cores in Xilinx FPGAs).
1628 menu "Shell scripting commands"
1633 Print file to standard output
1639 Echo args to console
1645 Return true/false on integer compare.
1651 Run script from memory
1657 Evaluate boolean and math expressions and store the result in an env
1659 Also supports loading the value at a memory location into a variable.
1660 If CONFIG_REGEX is enabled, setexpr also supports a gsub function.
1662 config CMD_SETEXPR_FMT
1664 depends on CMD_SETEXPR
1666 Evaluate format string expression and store result in an environment
1671 menu "Android support commands"
1673 config CMD_AB_SELECT
1675 depends on ANDROID_AB
1677 On Android devices with more than one boot slot (multiple copies of
1678 the kernel and system images) this provides a command to select which
1679 slot should be used to boot from and register the boot attempt. This
1680 is used by the new A/B update model where one slot is updated in the
1681 background while running from the other slot.
1688 bool "Network commands"
1698 bootp - boot image via network using BOOTP/TFTP protocol
1702 depends on CMD_BOOTP
1704 Boot image via network using DHCP/TFTP protocol
1710 Boot image via network using DHCPv6/TFTP protocol using IPv6.
1712 Will perform 4-message exchange with DHCPv6 server, requesting
1713 the minimum required options to TFTP boot. Complies with RFC 8415.
1715 config BOOTP_MAY_FAIL
1716 bool "Allow for the BOOTP/DHCP server to not be found"
1717 depends on CMD_BOOTP
1719 If the DHCP server is not found after the configured retry count, the
1720 call will fail instead of starting over. This can be used to fail
1721 over to Link-local IP address configuration if the DHCP server is not
1724 config BOOTP_BOOTPATH
1725 bool "Request & store 'rootpath' from BOOTP/DHCP server"
1727 depends on CMD_BOOTP
1729 Even though the config is called BOOTP_BOOTPATH, it stores the
1730 path in the variable 'rootpath'.
1732 config BOOTP_VENDOREX
1733 bool "Support vendor extensions from BOOTP/DHCP server"
1734 depends on CMD_BOOTP
1736 config BOOTP_BOOTFILESIZE
1737 bool "Request & store 'bootfilesize' from BOOTP/DHCP server"
1738 depends on CMD_BOOTP
1741 bool "Request & store 'dnsip' from BOOTP/DHCP server"
1743 depends on CMD_BOOTP
1745 The primary DNS server is stored as 'dnsip'. If two servers are
1746 returned, you must set BOOTP_DNS2 to store that second server IP
1750 bool "Store 'dnsip2' from BOOTP/DHCP server"
1751 depends on BOOTP_DNS
1753 If a DHCP client requests the DNS server IP from a DHCP server,
1754 it is possible that more than one DNS serverip is offered to the
1755 client. If CONFIG_BOOTP_DNS2 is enabled, the secondary DNS
1756 server IP will be stored in the additional environment
1757 variable "dnsip2". The first DNS serverip is always
1758 stored in the variable "dnsip", when BOOTP_DNS is defined.
1760 config BOOTP_GATEWAY
1761 bool "Request & store 'gatewayip' from BOOTP/DHCP server"
1763 depends on CMD_BOOTP
1765 config BOOTP_HOSTNAME
1766 bool "Request & store 'hostname' from BOOTP/DHCP server"
1768 depends on CMD_BOOTP
1770 The name may or may not be qualified with the local domain name.
1772 config BOOTP_PREFER_SERVERIP
1773 bool "serverip variable takes precedent over DHCP server IP."
1774 depends on CMD_BOOTP
1776 By default a BOOTP/DHCP reply will overwrite the 'serverip' variable.
1778 With this option enabled, the 'serverip' variable in the environment
1779 takes precedence over DHCP server IP and will only be set by the DHCP
1780 server if not already set in the environment.
1782 config BOOTP_SUBNETMASK
1783 bool "Request & store 'netmask' from BOOTP/DHCP server"
1785 depends on CMD_BOOTP
1787 config BOOTP_NISDOMAIN
1788 bool "Request & store 'nisdomain' from BOOTP/DHCP server"
1789 depends on CMD_BOOTP
1791 config BOOTP_NTPSERVER
1792 bool "Request & store 'ntpserverip' from BOOTP/DHCP server"
1793 depends on CMD_BOOTP
1795 config BOOTP_TIMEOFFSET
1796 bool "Request & store 'timeoffset' from BOOTP/DHCP server"
1797 depends on CMD_BOOTP && CMD_SNTP
1802 Selecting this will allow capturing all Ethernet packets and store
1803 them in physical memory in a PCAP formated file,
1804 later to be analyzed by PCAP reader application (IE. WireShark).
1807 bool "Send PXE client arch to BOOTP/DHCP server"
1809 depends on CMD_BOOTP && CMD_PXE
1811 Supported for ARM, ARM64, and x86 for now.
1813 config BOOTP_PXE_CLIENTARCH
1815 depends on BOOTP_PXE
1816 default 0x16 if ARM64
1820 config BOOTP_VCI_STRING
1822 depends on CMD_BOOTP
1823 default "U-Boot.armv7" if CPU_V7A || CPU_V7M || CPU_V7R
1824 default "U-Boot.armv8" if ARM64
1825 default "U-Boot.arm" if ARM
1830 config DHCP6_PXE_CLIENTARCH
1832 default 0x16 if ARM64
1836 config DHCP6_PXE_DHCP_OPTION
1837 bool "Request & store 'pxe_configfile' from DHCP6 server"
1839 config DHCP6_ENTERPRISE_ID
1840 int "Enterprise ID to send in DHCPv6 Vendor Class Option"
1849 tftpboot - load file via network using TFTP protocol
1853 depends on CMD_TFTPBOOT
1855 TFTP put command, for uploading files to a server
1859 depends on CMD_TFTPBOOT
1861 Act as a TFTP server and boot the first received file
1863 config NET_TFTP_VARS
1864 bool "Control TFTP timeout and count through environment"
1865 depends on CMD_TFTPBOOT
1868 If set, allows controlling the TFTP timeout through the
1869 environment variable tftptimeout, and the TFTP maximum
1870 timeout count through the variable tftptimeoutcountmax.
1871 If unset, timeout and maximum are hard-defined as 1 second
1872 and 10 timouts per TFTP transfer.
1877 Boot image via network using RARP/TFTP protocol
1882 Boot image via network using NFS protocol.
1885 int "Timeout in milliseconds for NFS mounts"
1889 Timeout in milliseconds used in NFS protocol. If you encounter
1890 "ERROR: Cannot umount" in nfs command, try longer timeout such as
1893 config SYS_DISABLE_AUTOLOAD
1894 bool "Disable automatically loading files over the network"
1895 depends on CMD_BOOTP || CMD_DHCP || CMD_NFS || CMD_RARP
1897 Typically, commands such as "dhcp" will attempt to automatically
1898 load a file from the network, once the initial network configuration
1899 is complete. Enable this option to disable this behavior and instead
1900 require files to be loaded over the network by subsequent commands.
1906 wget is a simple command to download kernel, or other files,
1907 from a http server over TCP.
1913 If set, allows 802.3(clause 22) MII Management functions interface access
1914 The management interface specified in Clause 22 provides
1915 a simple, two signal, serial interface to connect a
1916 Station Management entity and a managed PHY for providing access
1917 to management parameters and services.
1918 The interface is referred to as the MII management interface.
1921 bool "Call mii_init() in the mii command"
1922 depends on CMD_MII && (MPC8XX_FEC || FSLDMAFE || MCFFEC)
1928 If set, allows Enable 802.3(clause 45) MDIO interface registers access
1929 The MDIO interface is orthogonal to the MII interface and extends
1930 it by adding access to more registers through indirect addressing.
1935 Send ICMP ECHO_REQUEST to network host
1940 default y if (CMD_PING && IPV6)
1942 Send ICMPv6 ECHO_REQUEST to network host
1947 Perform CDP network configuration
1953 Synchronize RTC via network
1958 Lookup the IP of a hostname
1960 config CMD_LINK_LOCAL
1964 Acquire a network IP address using the link-local protocol
1970 Manually configure the attached NIC via NC-SI.
1971 Normally this happens automatically before other network
1974 config IPV6_ROUTER_DISCOVERY
1975 bool "Do IPv6 router discovery"
1978 Will automatically perform router solicitation on first IPv6
1985 Allow control of L2 Ethernet switch commands. These are supported
1986 by the vsc9953 Ethernet driver at present. Sub-commands allow
1987 operations such as enabling / disabling a port and
1988 viewing/maintaining the filtering database (FDB)
1994 Boot image via network using PXE protocol
1999 Wait for wake-on-lan Magic Packet
2003 menu "Misc commands"
2008 This is a simple sliding block puzzle game designed by Italian web
2009 developer Gabriele Cirulli. The game's objective is to slide numbered
2010 tiles on a grid to combine them to create a tile with the number
2013 This needs ANSI support on your terminal to work. It is not fully
2014 functional on a video device.
2017 bool "Enable 'bmp' command"
2021 This provides a way to obtain information about a BMP-format image
2022 and to display it. BMP (which presumably stands for BitMaP) is a
2023 file format defined by Microsoft which supports images of various
2024 depths, formats and compression methods. Headers on the file
2025 determine the formats used. This command can be used by first loading
2026 the image into RAM, then using this command to look at it or display
2029 config CMD_BOOTCOUNT
2031 depends on BOOTCOUNT_LIMIT
2033 Enable the bootcount command, which allows interrogation and
2034 reset of the bootcounter.
2037 bool "Enable board-specific commands"
2039 (deprecated: instead, please define a Kconfig option for each command)
2041 Some boards have board-specific commands which are only enabled
2042 during developemnt and need to be turned off for production. This
2043 option provides a way to control this. The commands that are enabled
2044 vary depending on the board.
2046 config CMD_BLOCK_CACHE
2047 bool "blkcache - control and stats for block cache"
2048 depends on BLOCK_CACHE
2049 default y if BLOCK_CACHE
2051 Enable the blkcache command, which can be used to control the
2052 operation of the cache functions.
2053 This is most useful when fine-tuning the operation of the cache
2054 during development, but also allows the cache to be disabled when
2055 it might hurt performance (e.g. when using the ums command).
2058 bool "blkmap - Composable virtual block devices"
2062 Create virtual block devices that are backed by various sources,
2063 e.g. RAM, or parts of an existing block device. Though much more
2064 rudimentary, it borrows a lot of ideas from Linux's device mapper
2068 - Treat a region of RAM as a block device, i.e. a RAM disk. This let's
2069 you extract files from filesystem images stored in RAM (perhaps as a
2070 result of a TFTP transfer).
2071 - Create a virtual partition on an existing device. This let's you
2072 access filesystems that aren't stored at an exact partition
2073 boundary. A common example is a filesystem image embedded in an FIT
2081 Enable the 'button' command which allows to get the status of
2082 buttons supported by the board. The buttonss can be listed with
2083 'button list' and state can be known with 'button <label>'.
2084 Any button drivers can be controlled with this command, e.g.
2088 bool "icache or dcache"
2090 Enable the "icache" and "dcache" commands
2092 config CMD_CONITRACE
2093 bool "conitrace - trace console input codes"
2095 Enable the 'conitrace' command which displays the codes received
2096 from the console input as hexadecimal numbers.
2099 bool "Enable clear screen command 'cls'"
2100 default y if LCD || VIDEO
2102 Enable the 'cls' command which clears the screen contents
2103 on video frame buffer.
2106 bool "efidebug - display/configure UEFI environment"
2107 depends on EFI_LOADER
2108 select EFI_DEVICE_PATH_TO_TEXT
2110 Enable the 'efidebug' command which provides a subset of UEFI
2111 shell utility with simplified functionality. It will be useful
2112 particularly for managing boot parameters as well as examining
2113 various EFI status for debugging.
2115 config CMD_EFICONFIG
2116 bool "eficonfig - provide menu-driven uefi variables maintenance interface"
2117 default y if !HAS_BOARD_SIZE_LIMIT
2118 depends on CMD_BOOTEFI_BOOTMGR
2121 Enable the 'eficonfig' command which provides the menu-driven UEFI
2122 variable maintenance interface.
2124 config CMD_EXCEPTION
2125 bool "exception - raise exception"
2126 depends on ARM || RISCV || SANDBOX || X86
2128 Enable the 'exception' command which allows to raise an exception.
2135 Enable the 'led' command which allows for control of LEDs supported
2136 by the board. The LEDs can be listed with 'led list' and controlled
2137 with led on/off/togle/blink. Any LED drivers can be controlled with
2138 this command, e.g. led_gpio.
2143 Enable the 'ini' command which allows a .ini file to be parsed and
2144 placed into environment variables. Please check the source code for
2145 this as there is no documentation.
2152 Enable the 'date' command for getting/setting the time/date in RTC
2159 Enable the 'rtc' command for low-level access to RTC devices.
2164 Run commands and summarize execution time.
2167 bool "gettime - read elapsed time"
2169 Enable the 'gettime' command which reads the elapsed time since
2170 U-Boot started running. This shows the time in seconds and
2171 milliseconds. See also the 'bootstage' command which provides more
2172 flexibility for boot timing.
2175 bool "pause command"
2177 Delay execution waiting for any user input.
2178 Useful to allow the user to read a failure log.
2183 default y if SANDBOX
2186 Print bytes from the hardware random number generator.
2188 config CMD_KASLRSEED
2192 Set the kaslr-seed in the chosen node with entropy provided by a
2193 hardware random number generator.
2199 Delay execution for some time
2202 bool "support for multiprocessor commands"
2206 This enables commands to bringup different processors
2207 in multiprocessor cases.
2212 Access the system timer.
2218 This provides basic access to the U-Boot's sound support. The main
2219 feature is to play a beep.
2221 sound init - set up sound system
2222 sound play - play a sound
2228 Boot image via local extlinux.conf file
2234 This provides access to the QEMU firmware interface. The main
2235 feature is to allow easy loading of files passed to qemu-system
2236 via -kernel / -initrd
2241 This provides access to Linux PStore with Rammoops backend. The main
2242 feature is to allow to display or save PStore records.
2244 See doc/pstore.rst for more information.
2248 config CMD_PSTORE_MEM_ADDR
2249 hex "Memory Address"
2250 depends on CMD_PSTORE
2252 Base addr used for PStore ramoops memory, should be identical to
2253 ramoops.mem_address parameter used by kernel
2255 config CMD_PSTORE_MEM_SIZE
2257 depends on CMD_PSTORE
2260 Size of PStore ramoops memory, should be identical to ramoops.mem_size
2261 parameter used by kernel, a power of 2 and larger than the sum of the
2264 config CMD_PSTORE_RECORD_SIZE
2265 hex "Dump record size"
2266 depends on CMD_PSTORE
2269 Size of each dump done on oops/panic, should be identical to
2270 ramoops.record_size parameter used by kernel and a power of 2
2273 config CMD_PSTORE_CONSOLE_SIZE
2274 hex "Kernel console log size"
2275 depends on CMD_PSTORE
2278 Size of kernel console log, should be identical to
2279 ramoops.console_size parameter used by kernel and a power of 2
2282 config CMD_PSTORE_FTRACE_SIZE
2283 hex "FTrace log size"
2284 depends on CMD_PSTORE
2287 Size of ftrace log, should be identical to ramoops.ftrace_size
2288 parameter used by kernel and a power of 2
2290 config CMD_PSTORE_PMSG_SIZE
2291 hex "User space message log size"
2292 depends on CMD_PSTORE
2295 Size of user space message log, should be identical to
2296 ramoops.pmsg_size parameter used by kernel and a power of 2
2298 config CMD_PSTORE_ECC_SIZE
2300 depends on CMD_PSTORE
2303 if non-zero, the option enables ECC support and specifies ECC buffer
2304 size in bytes (1 is a special value, means 16 bytes ECC), should be
2305 identical to ramoops.ramoops_ecc parameter used by kernel
2309 source "cmd/mvebu/Kconfig"
2312 bool "terminal - provides a way to attach a serial terminal"
2314 Provides a 'cu'-like serial terminal command. This can be used to
2315 access other serial ports from the system console. The terminal
2316 is very simple with no special processing of characters. As with
2317 cu, you can press ~. (tilde followed by period) to exit.
2320 bool "uuid, guid - generation of unique IDs"
2323 This enables two commands:
2325 uuid - generate random Universally Unique Identifier
2326 guid - generate Globally Unique Identifier based on random UUID
2328 The two commands are very similar except for the endianness of the
2331 config CMD_VIDCONSOLE
2332 bool "lcdputs and setcurs"
2336 Enabling this will provide 'setcurs' and 'lcdputs' commands which
2337 support cursor positioning and drawing strings on the video
2338 console (framebuffer).
2340 The name 'lcdputs' is a bit of a misnomer, but so named because the
2341 video device is often an LCD.
2343 config CMD_SELECT_FONT
2344 bool "select font size"
2348 Enabling this will provide 'font' command.
2349 Allows font selection at runtime.
2353 source "cmd/ti/Kconfig"
2355 config CMD_BOOTSTAGE
2356 bool "Enable the 'bootstage' command"
2357 depends on BOOTSTAGE
2359 Add a 'bootstage' command which supports printing a report
2360 and un/stashing of bootstage data.
2362 menu "Power commands"
2364 bool "Enable Driver Model PMIC command"
2367 This is the pmic command, based on a driver model pmic's API.
2368 Command features are unchanged:
2369 - list - list pmic devices
2370 - pmic dev <id> - show or [set] operating pmic device (NEW)
2371 - pmic dump - dump registers
2372 - pmic read address - read byte of register at address
2373 - pmic write address - write byte to register at address
2374 The only one change for this command is 'dev' subcommand.
2376 config CMD_REGULATOR
2377 bool "Enable Driver Model REGULATOR command"
2378 depends on DM_REGULATOR
2380 This command is based on driver model regulator's API.
2381 User interface features:
2382 - list - list regulator devices
2383 - regulator dev <id> - show or [set] operating regulator device
2384 - regulator info - print constraints info
2385 - regulator status - print operating status
2386 - regulator value <val] <-f> - print/[set] voltage value [uV]
2387 - regulator current <val> - print/[set] current value [uA]
2388 - regulator mode <id> - print/[set] operating mode id
2389 - regulator enable - enable the regulator output
2390 - regulator disable - disable the regulator output
2392 The '-f' (force) option can be used for set the value which exceeds
2393 the limits, which are found in device-tree and are kept in regulator's
2394 uclass plat structure.
2398 menu "Security commands"
2400 bool "Enable the 'aes' command"
2403 This provides a means to encrypt and decrypt data using the AES
2404 (Advanced Encryption Standard). This algorithm uses a symetric key
2405 and is widely used as a streaming cipher. Different key lengths are
2406 supported by the algorithm but this command only supports 128 bits
2410 bool "Enable the 'blob' command"
2411 depends on !MX6ULL && !MX6SLL && !MX6SL
2412 select IMX_HAB if ARCH_MX6 || ARCH_MX7 || ARCH_MX7ULP || ARCH_IMX8M
2414 This is used with the Freescale secure boot mechanism.
2416 Freescale's SEC block has built-in Blob Protocol which provides
2417 a method for protecting user-defined data across system power
2418 cycles. SEC block protects data in a data structure called a Blob,
2419 which provides both confidentiality and integrity protection.
2421 Encapsulating data as a blob
2422 Each time that the Blob Protocol is used to protect data, a
2423 different randomly generated key is used to encrypt the data.
2424 This random key is itself encrypted using a key which is derived
2425 from SoC's non-volatile secret key and a 16 bit Key identifier.
2426 The resulting encrypted key along with encrypted data is called a
2427 blob. The non-volatile secure key is available for use only during
2430 During decapsulation, the reverse process is performed to get back
2434 blob enc - encapsulating data as a cryptgraphic blob
2435 blob dec - decapsulating cryptgraphic blob to get the data
2439 blob enc src dst len km
2441 Encapsulate and create blob of data $len bytes long
2442 at address $src and store the result at address $dst.
2443 $km is the 16 byte key modifier is also required for
2444 generation/use as key for cryptographic operation. Key
2445 modifier should be 16 byte long.
2447 blob dec src dst len km
2449 Decapsulate the blob of data at address $src and
2450 store result of $len byte at addr $dst.
2451 $km is the 16 byte key modifier is also required for
2452 generation/use as key for cryptographic operation. Key
2453 modifier should be 16 byte long.
2456 bool "Support 'hash' command"
2459 This provides a way to hash data in memory using various supported
2460 algorithms (such as SHA1, MD5, CRC32). The computed digest can be
2461 saved to memory or to an environment variable. It is also possible
2462 to verify a hash against data in memory.
2465 bool "Support the 'hvc' command"
2466 depends on ARM_SMCCC
2468 Allows issuing Hypervisor Calls (HVCs). Mostly useful for
2469 development and testing.
2472 bool "Support the 'smc' command"
2473 depends on ARM_SMCCC
2475 Allows issuing Secure Monitor Calls (SMCs). Mostly useful for
2476 development and testing.
2482 Add -v option to verify data against a hash.
2485 bool "scp03 - SCP03 enable and rotate/provision operations"
2488 This command provides access to a Trusted Application
2489 running in a TEE to request Secure Channel Protocol 03
2490 (SCP03) enablement and/or rotation of its SCP03 keys.
2499 bool "Enable the 'tpm' command"
2500 depends on TPM_V1 || TPM_V2
2501 select CMD_TPM_V1 if TPM_V1
2502 select CMD_TPM_V2 if TPM_V2
2504 This provides a means to talk to a TPM from the command line. A wide
2505 range of commands if provided - see 'tpm help' for details. The
2506 command requires a suitable TPM on your board and the correct driver
2512 bool "Enable the 'tpm test' command"
2515 This provides a a series of tests to confirm that the TPMv1.x is
2516 working correctly. The tests cover initialisation, non-volatile RAM,
2517 extend, global lock and checking that timing is within expectations.
2518 The tests pass correctly on Infineon TPMs but may need to be adjusted
2525 menu "Firmware commands"
2527 bool "Enable crosec command"
2531 Enable command-line access to the Chrome OS EC (Embedded
2532 Controller). This provides the 'crosec' command which has
2533 a number of sub-commands for performing EC tasks such as
2534 updating its flash, accessing a small saved context area
2535 and talking to the I2C bus behind the EC (if there is one).
2538 menu "Filesystem commands"
2540 bool "Enable the 'btrsubvol' command"
2543 This enables the 'btrsubvol' command to list subvolumes
2544 of a BTRFS filesystem. There are no special commands for
2545 listing BTRFS directories or loading BTRFS files - this
2546 can be done by the generic 'fs' commands (see CMD_FS_GENERIC)
2547 when BTRFS is enabled (see FS_BTRFS).
2550 bool "Enable the 'cbfs' command"
2553 Define this to enable support for reading from a Coreboot
2554 filesystem. This is a ROM-based filesystem used for accessing files
2555 on systems that use coreboot as the first boot-loader and then load
2556 U-Boot to actually boot the Operating System. Available commands are
2557 cbfsinit, cbfsinfo, cbfsls and cbfsload.
2560 bool "Enable the 'cramfs' command"
2561 depends on FS_CRAMFS
2563 This provides commands for dealing with CRAMFS (Compressed ROM
2564 filesystem). CRAMFS is useful when space is tight since files are
2565 compressed. Two commands are provided:
2567 cramfsls - lists files in a cramfs image
2568 cramfsload - loads a file from a cramfs image
2571 bool "EROFS command support"
2574 Support for the EROFS fs
2577 bool "ext2 command support"
2580 Enables EXT2 FS command
2583 bool "ext4 command support"
2586 Enables EXT4 FS command
2588 config CMD_EXT4_WRITE
2590 bool "ext4 write command support"
2593 Enables EXT4 FS write command
2596 bool "FAT command support"
2599 Support for the FAT fs
2602 bool "SquashFS command support"
2605 Enables SquashFS filesystem commands (e.g. load, ls).
2607 config CMD_FS_GENERIC
2608 bool "filesystem commands"
2610 Enables filesystem commands (e.g. load, ls) that work for multiple
2614 bool "fsuuid command"
2616 Enables fsuuid command for filesystem UUID.
2619 bool "jffs2 command"
2622 Enables commands to support the JFFS2 (Journalling Flash File System
2623 version 2) filesystem. This enables fsload, ls and fsinfo which
2624 provide the ability to load files, list directories and obtain
2625 filesystem information.
2628 string "Default device for JFFS2"
2629 depends on CMD_JFFS2
2632 The default device to use with the jffs2 command.
2634 config JFFS2_PART_OFFSET
2635 hex "Default offset within flash to locate the JFFS2 image"
2636 depends on CMD_JFFS2
2639 The default offset within flash to locate the JFFS2 image.
2641 config JFFS2_PART_SIZE
2642 hex "Default size of JFFS2 partition"
2643 depends on CMD_JFFS2
2646 The default size of the JFFS2 partition
2649 bool "MTD partition support"
2652 MTD partitioning tool support.
2653 It is strongly encouraged to avoid using this command
2654 anymore along with 'sf', 'nand', 'onenand'. One can still
2655 declare the partitions in the mtdparts environment variable
2656 but better use the MTD stack and the 'mtd' command instead.
2658 config CMD_MTDPARTS_SPREAD
2659 bool "Padd partition size to take account of bad blocks"
2660 depends on CMD_MTDPARTS
2662 This enables the 'spread' sub-command of the mtdparts command.
2663 This command will modify the existing mtdparts variable by increasing
2664 the size of the partitions such that 1) each partition's net size is
2665 at least as large as the size specified in the mtdparts variable and
2666 2) each partition starts on a good block.
2668 config CMD_MTDPARTS_SHOW_NET_SIZES
2669 bool "Show net size (w/o bad blocks) of partitions"
2670 depends on CMD_MTDPARTS
2672 Adds two columns to the printed partition table showing the
2673 effective usable size of a partition, if bad blocks are taken
2676 config MTDIDS_DEFAULT
2677 string "Default MTD IDs"
2678 depends on MTD || SPI_FLASH
2679 depends on !SYS_MTDPARTS_RUNTIME
2681 Defines a default MTD IDs list for use with MTD partitions in the
2682 Linux MTD command line partitions format.
2684 config MTDPARTS_DEFAULT
2685 string "Default MTD partition scheme"
2686 depends on MTD || SPI_FLASH
2687 depends on !SYS_MTDPARTS_RUNTIME
2689 Defines a default MTD partitioning scheme in the Linux MTD command
2690 line partitions format
2693 bool "reiser - Access to reiserfs filesystems"
2695 This provides two commands which operate on a resierfs filesystem,
2696 commonly used some years ago:
2698 reiserls - list files
2699 reiserload - load a file
2702 bool "yaffs2 - Access of YAFFS2 filesystem"
2706 This provides commands for accessing a YAFFS2 filesystem. Yet
2707 Another Flash Filesystem 2 is a filesystem designed specifically
2708 for NAND flash. It incorporates bad-block management and ensures
2709 that device writes are sequential regardless of filesystem
2713 bool "zfs - Access of ZFS filesystem"
2715 This provides commands to accessing a ZFS filesystem, commonly used
2716 on Solaris systems. Two sub-commands are provided:
2718 zfsls - list files in a directory
2719 zfsload - load a file
2721 See doc/README.zfs for more details.
2725 menu "Debug commands"
2727 config CMD_CBSYSINFO
2730 default y if SYS_COREBOOT
2732 This provides information about the coreboot sysinfo table stored in
2733 memory by coreboot before jumping to U-Boot. It can be useful for
2734 debugging the beaaviour of coreboot or U-Boot.
2737 bool "cyclic - Show information about cyclic functions"
2741 This enables the 'cyclic' command which provides information about
2742 cyclic execution functions. This infrastructure allows registering
2743 functions to be executed cyclically, e.g. every 100ms. These commands
2746 cyclic list - list cyclic functions
2747 cyclic cyclic demo <cycletime_ms> <delay_us> - register cyclic
2750 See doc/develop/cyclic.rst for more details.
2753 bool "diag - Board diagnostics"
2755 This command provides access to board diagnostic tests. These are
2756 called Power-on Self Tests (POST). The command allows listing of
2757 available tests and running either all the tests, or specific tests
2761 bool "event - Show information about events"
2763 default y if EVENT_DEBUG
2765 This enables the 'event' command which provides information about
2766 events and event-handler routines. This can help to device event
2770 bool "irq - Show information about interrupts"
2771 depends on !ARM && !MIPS && !RISCV && !SH
2773 This enables two commands:
2775 interrupts - enable or disable interrupts
2776 irqinfo - print device-specific interrupt information
2779 bool "kgdb - Allow debugging of U-Boot with gdb"
2782 This enables a 'kgdb' command which allows gdb to connect to U-Boot
2783 over a serial link for debugging purposes. This allows
2784 single-stepping, inspecting variables, etc. This is supported only
2785 on PowerPC at present.
2788 bool "log - Generation, control and access to logging"
2792 This provides access to logging features. It allows the output of
2793 log data to be controlled to a limited extent (setting up the default
2794 maximum log level for emitting of records). It also provides access
2795 to a command used for testing the log system.
2798 bool "trace - Support tracing of function calls and timing"
2802 Enables a command to control using of function tracing within
2803 U-Boot. This allows recording of call traces including timing
2804 information. The command can write data to memory for exporting
2805 for analysis (e.g. using bootchart). See doc/README.trace for full
2809 bool "avb - Android Verified Boot 2.0 operations"
2810 depends on AVB_VERIFY
2812 Enables a "avb" command to perform verification of partitions using
2813 Android Verified Boot 2.0 functionality. It includes such subcommands:
2814 avb init - initialize avb2 subsystem
2815 avb read_rb - read rollback index
2816 avb write_rb - write rollback index
2817 avb is_unlocked - check device lock state
2818 avb get_uuid - read and print uuid of a partition
2819 avb read_part - read data from partition
2820 avb read_part_hex - read data from partition and output to stdout
2821 avb write_part - write data to partition
2822 avb verify - run full verification chain
2824 config CMD_STACKPROTECTOR_TEST
2825 bool "Test command for stack protector"
2826 depends on STACKPROTECTOR
2828 Enable stackprot_test command
2829 The stackprot_test command will force a stack overrun to test
2830 the stack smashing detection mechanisms.
2835 tristate "Enable UBI - Unsorted block images commands"
2838 UBI is a software layer above MTD layer which admits use of LVM-like
2839 logical volumes on top of MTD devices, hides some complexities of
2840 flash chips like wear and bad blocks and provides some other useful
2841 capabilities. Please, consult the MTD web site for more details
2842 (www.linux-mtd.infradead.org). Activate this option if you want
2843 to use U-Boot UBI commands.
2844 It is also strongly encouraged to also enable CONFIG_MTD to get full
2847 config CMD_UBI_RENAME
2848 bool "Enable rename"
2851 Enable a "ubi" command to rename ubi volume:
2852 ubi rename <oldname> <newname>
2855 tristate "Enable UBIFS - Unsorted block images filesystem commands"
2857 default y if CMD_UBI
2861 UBIFS is a file system for flash devices which works on top of UBI.
2863 config MMC_SPEED_MODE_SET
2864 bool "set speed mode using mmc command"
2868 Enable setting speed mode using mmc rescan and mmc dev commands.
2869 The speed mode is provided as the last argument in these commands
2870 and is indicated using the index from enum bus_mode in
2871 include/mmc.h. A speed mode can be set only if it has already
2872 been enabled in the device tree.
2875 bool "Amlogic Meson commands"
2876 depends on ARCH_MESON
2879 Enable useful commands for the Meson Soc family developed by Amlogic Inc.
projects / platform / kernel / u-boot.git / blob