1 menu "Command line interface"
4 bool "Support U-Boot commands"
7 Enable U-Boot's command-line functions. This provides a means
8 to enter commands into U-Boot for a wide variety of purposes. It
9 also allows scripts (containing commands) to be executed.
10 Various commands and command categorys can be indivdually enabled.
11 Depending on the number of commands enabled, this can add
12 substantially to the size of U-Boot.
18 This option enables the "hush" shell (from Busybox) as command line
19 interpreter, thus enabling powerful command line syntax like
20 if...then...else...fi conditionals or `&&' and '||'
21 constructs ("shell scripts").
23 If disabled, you get the old, much simpler behaviour with a somewhat
24 smaller memory footprint.
26 config CMDLINE_EDITING
27 bool "Enable command line editing"
31 Enable editing and History functions for interactive command line
35 bool "Enable auto complete using TAB"
39 Enable auto completion of commands using TAB.
42 bool "Enable long help messages"
46 Defined when you want long help messages included
47 Do not set this option when short of memory.
51 default "Zynq> " if ARCH_ZYNQ
52 default "ZynqMP> " if ARCH_ZYNQMP
55 This string is displayed in the command line to the left of the
59 string "Command execution tracer"
63 This option enables the possiblity to print all commands before
64 executing them and after all variables are evaluated (similar
65 to Bash's xtrace/'set -x' feature).
66 To enable the tracer a variable "xtrace" needs to be defined in
69 menu "Autoboot options"
75 This enables the autoboot. See doc/README.autoboot for detail.
78 bool "Stop autobooting via specific input key / string"
81 This option enables stopping (aborting) of the automatic
82 boot feature only by issuing a specific input key or
83 string. If not enabled, any input key will abort the
84 U-Boot automatic booting process and bring the device
85 to the U-Boot prompt for user input.
87 config AUTOBOOT_PROMPT
88 string "Autoboot stop prompt"
89 depends on AUTOBOOT_KEYED
90 default "Autoboot in %d seconds\\n"
92 This string is displayed before the boot delay selected by
93 CONFIG_BOOTDELAY starts. If it is not defined there is no
94 output indicating that autoboot is in progress.
96 Note that this define is used as the (only) argument to a
97 printf() call, so it may contain '%' format specifications,
98 provided that it also includes, sepearated by commas exactly
99 like in a printf statement, the required arguments. It is
100 the responsibility of the user to select only such arguments
101 that are valid in the given context.
103 config AUTOBOOT_ENCRYPTION
104 bool "Enable encryption in autoboot stopping"
105 depends on AUTOBOOT_KEYED
107 This option allows a string to be entered into U-Boot to stop the
108 autoboot. The string itself is hashed and compared against the hash
109 in the environment variable 'bootstopkeysha256'. If it matches then
110 boot stops and a command-line prompt is presented.
112 This provides a way to ship a secure production device which can also
113 be accessed at the U-Boot command line.
115 config AUTOBOOT_DELAY_STR
116 string "Delay autobooting via specific input key / string"
117 depends on AUTOBOOT_KEYED && !AUTOBOOT_ENCRYPTION
119 This option delays the automatic boot feature by issuing
120 a specific input key or string. If CONFIG_AUTOBOOT_DELAY_STR
121 or the environment variable "bootdelaykey" is specified
122 and this string is received from console input before
123 autoboot starts booting, U-Boot gives a command prompt. The
124 U-Boot prompt will time out if CONFIG_BOOT_RETRY_TIME is
125 used, otherwise it never times out.
127 config AUTOBOOT_STOP_STR
128 string "Stop autobooting via specific input key / string"
129 depends on AUTOBOOT_KEYED && !AUTOBOOT_ENCRYPTION
131 This option enables stopping (aborting) of the automatic
132 boot feature only by issuing a specific input key or
133 string. If CONFIG_AUTOBOOT_STOP_STR or the environment
134 variable "bootstopkey" is specified and this string is
135 received from console input before autoboot starts booting,
136 U-Boot gives a command prompt. The U-Boot prompt never
137 times out, even if CONFIG_BOOT_RETRY_TIME is used.
139 config AUTOBOOT_KEYED_CTRLC
140 bool "Enable Ctrl-C autoboot interruption"
141 depends on AUTOBOOT_KEYED && !AUTOBOOT_ENCRYPTION
144 This option allows for the boot sequence to be interrupted
145 by ctrl-c, in addition to the "bootdelaykey" and "bootstopkey".
146 Setting this variable provides an escape sequence from the
147 limited "password" strings.
149 config AUTOBOOT_STOP_STR_SHA256
150 string "Stop autobooting via SHA256 encrypted password"
151 depends on AUTOBOOT_KEYED && AUTOBOOT_ENCRYPTION
153 This option adds the feature to only stop the autobooting,
154 and therefore boot into the U-Boot prompt, when the input
155 string / password matches a values that is encypted via
156 a SHA256 hash and saved in the environment.
158 config AUTOBOOT_USE_MENUKEY
159 bool "Allow a specify key to run a menu from the environment"
160 depends on !AUTOBOOT_KEYED
162 If a specific key is pressed to stop autoboot, then the commands in
163 the environment variable 'menucmd' are executed before boot starts.
165 config AUTOBOOT_MENUKEY
166 int "ASCII value of boot key to show a menu"
168 depends on AUTOBOOT_USE_MENUKEY
170 If this key is pressed to stop autoboot, then the commands in the
171 environment variable 'menucmd' will be executed before boot starts.
172 For example, 33 means "!" in ASCII, so pressing ! at boot would take
175 config AUTOBOOT_MENU_SHOW
176 bool "Show a menu on boot"
177 depends on CMD_BOOTMENU
179 This enables the boot menu, controlled by environment variables
180 defined by the board. The menu starts after running the 'preboot'
181 environmnent variable (if enabled) and before handling the boot delay.
182 See README.bootmenu for more details.
204 Print ".config" contents.
206 If this option is enabled, the ".config" file contents are embedded
207 in the U-Boot image and can be printed on the console by the "config"
208 command. This provides information of which options are enabled on
215 Print console devices and information.
220 Print information about available CPUs. This normally shows the
221 number of CPUs, type (e.g. manufacturer, architecture, product or
222 internal name) and clock frequency. Other information may be
223 available depending on the CPU driver.
229 Print GPL license text
234 Provides access to the Intel Power-Management Controller (PMC) so
235 that its state can be examined. This does not currently support
236 changing the state but it is still useful for debugging and seeing
245 config CMD_TLV_EEPROM
247 depends on I2C_EEPROM
249 Display and program the system EEPROM data block in ONIE Tlvinfo
250 format. TLV stands for Type-Length-Value.
252 config SPL_CMD_TLV_EEPROM
253 bool "tlv_eeprom for SPL"
254 depends on SPL_I2C_EEPROM
255 select SPL_DRIVERS_MISC_SUPPORT
257 Read system EEPROM data block in ONIE Tlvinfo format from SPL.
267 Run the command stored in the environment "bootcmd", i.e.
268 "bootd" does the same thing as "run bootcmd".
274 Boot an application image from the memory.
277 bool "Support booting UEFI FIT images"
278 depends on CMD_BOOTEFI && CMD_BOOTM && FIT
281 Support booting UEFI FIT images via the bootm command.
286 Boot the Linux zImage
290 depends on ARM64 || RISCV
293 Boot an AArch64 Linux Kernel image from memory.
296 bool "Support booting Linux OS images"
297 depends on CMD_BOOTM || CMD_BOOTZ || CMD_BOOTI
300 Support booting the Linux kernel directly via a command such as bootm
304 bool "Support booting NetBSD (non-EFI) loader images"
308 Support booting NetBSD via the bootm command.
310 config BOOTM_OPENRTOS
311 bool "Support booting OPENRTOS / FreeRTOS images"
314 Support booting OPENRTOS / FreeRTOS via the bootm command.
317 bool "Support booting Enea OSE images"
318 depends on (ARM && (ARM64 || CPU_V7A || CPU_V7R) || SANDBOX || PPC || X86)
321 Support booting Enea OSE images via the bootm command.
324 bool "Support booting Plan9 OS images"
328 Support booting Plan9 images via the bootm command.
331 bool "Support booting RTEMS OS images"
335 Support booting RTEMS images via the bootm command.
338 bool "Support booting VxWorks OS images"
342 Support booting VxWorks images via the bootm command.
346 depends on EFI_LOADER
349 Boot an EFI image from memory.
351 config CMD_BOOTEFI_HELLO_COMPILE
352 bool "Compile a standard EFI hello world binary for testing"
353 depends on CMD_BOOTEFI && !CPU_V7M
356 This compiles a standard EFI hello world application with U-Boot so
357 that it can be used with the test/py testing framework. This is useful
358 for testing that EFI is working at a basic level, and for bringing
359 up EFI support on a new architecture.
361 No additional space will be required in the resulting U-Boot binary
362 when this option is enabled.
364 config CMD_BOOTEFI_HELLO
365 bool "Allow booting a standard EFI hello world for testing"
366 depends on CMD_BOOTEFI_HELLO_COMPILE
368 This adds a standard EFI hello world application to U-Boot so that
369 it can be used with the 'bootefi hello' command. This is useful
370 for testing that EFI is working at a basic level, and for bringing
371 up EFI support on a new architecture.
373 source lib/efi_selftest/Kconfig
379 Add an ANSI terminal boot menu command.
384 Android DTB/DTBO image manipulation commands. Read dtb/dtbo files from
385 image into RAM, dump image structure information, etc. Those dtb/dtbo
386 files should be merged in one dtb further, which needs to be passed to
387 the kernel, as part of a boot process.
391 depends on ANDROID_BOOT_IMAGE
393 Android Boot Image manipulation commands. Allows one to extract
394 images contained in boot.img, like kernel, ramdisk, dtb, etc, and
395 obtain corresponding meta-information from boot.img.
397 See doc/android/boot-image.rst for details.
400 bool "bootelf, bootvx"
403 Boot an ELF/vxWorks image from the memory.
406 bool "Flattened Device Tree utility commands"
410 Do FDT related setup before booting into the Operating System.
416 Start an application at a given address.
422 Run the command in the given environment variable.
428 Print header information for application image.
433 List all images found in flash
439 Extract a part of a multi-image.
442 bool "spl export - Export boot information for Falcon boot"
445 Falcon mode allows booting directly from SPL into an Operating
446 System such as Linux, thus skipping U-Boot proper. See
447 doc/README.falcon for full information about how to use this
450 config CMD_SPL_NAND_OFS
451 hex "Offset of OS args or dtb for Falcon-mode NAND boot"
452 depends on CMD_SPL && (TPL_NAND_SUPPORT || SPL_NAND_SUPPORT)
455 This provides the offset of the command line arguments for Linux
456 when booting from NAND in Falcon mode. See doc/README.falcon
457 for full information about how to use this option (and also see
458 board/gateworks/gw_ventana/README for an example).
460 config CMD_SPL_NOR_OFS
461 hex "Offset of OS args or dtb for Falcon-mode NOR boot"
462 depends on CMD_SPL && SPL_NOR_SUPPORT
465 This provides the offset of the command line arguments or dtb for
466 Linux when booting from NOR in Falcon mode.
468 config CMD_SPL_WRITE_SIZE
469 hex "Size of argument area"
473 This provides the size of the command-line argument area in NAND
474 flash used by Falcon-mode boot. See the documentation until CMD_SPL
478 bool "fitImage update command"
480 Implements the 'fitupd' command, which allows to automatically
481 store software updates present on a TFTP server in NOR Flash
483 config CMD_THOR_DOWNLOAD
484 bool "thor - TIZEN 'thor' download"
487 Implements the 'thor' download protocol. This is a way of
488 downloading a software update over USB from an attached host.
489 There is no documentation about this within the U-Boot source code
490 but you should be able to find something on the interwebs.
493 bool "zboot - x86 boot command"
495 With x86 machines it is common to boot a bzImage file which
496 contains both a kernel and a setup.bin file. The latter includes
497 configuration information from the dark ages which x86 boards still
498 need to pick things out of.
500 Consider using FIT in preference to this since it supports directly
501 booting both 32- and 64-bit kernels, as well as secure boot.
502 Documentation is available in doc/uImage.FIT/x86-fit-boot.txt
506 menu "Environment commands"
509 bool "ask for env variable"
511 Ask for environment variable
529 Edit environment variable.
534 Allow for searching environment variables
540 Save all environment variables into the compiled-in persistent
546 depends on CMD_SAVEENV
548 Erase environment variables from the compiled-in persistent
551 config CMD_ENV_EXISTS
555 Check if a variable is defined in the environment for use in
558 config CMD_ENV_CALLBACK
559 bool "env callbacks - print callbacks and their associated variables"
561 Some environment variable have callbacks defined by
562 U_BOOT_ENV_CALLBACK. These are called when the variable changes.
563 For example changing "baudrate" adjust the serial baud rate. This
564 command lists the currently defined callbacks.
567 bool "env flags -print variables that have non-default flags"
569 Some environment variables have special flags that control their
570 behaviour. For example, serial# can only be written once and cannot
571 be deleted. This command shows the variables that have special
574 config CMD_NVEDIT_EFI
575 bool "env [set|print] -e - set/print UEFI variables"
576 depends on EFI_LOADER
579 UEFI variables are encoded as some form of U-Boot variables.
580 If enabled, we are allowed to set/print UEFI variables using
581 "env" command with "-e" option without knowing details.
583 config CMD_NVEDIT_INFO
584 bool "env info - print or evaluate environment information"
586 Print environment information:
587 - env_valid : is environment valid
588 - env_ready : is environment imported into hash table
589 - env_use_default : is default environment used
591 This command can be optionally used for evaluation in scripts:
592 [-d] : evaluate whether default environment is used
593 [-p] : evaluate whether environment can be persisted
594 The result of multiple evaluations will be combined with AND.
598 menu "Memory commands"
603 Compute binary operations (xor, or, and) of byte arrays of arbitrary
604 size from memory and store the result in memory or the environment.
617 Add -v option to verify data against a crc32 checksum.
620 bool "eeprom - EEPROM subsystem"
622 (deprecated, needs conversion to driver model)
623 Provides commands to read and write EEPROM (Electrically Erasable
624 Programmable Read Only Memory) chips that are connected over an
627 config CMD_EEPROM_LAYOUT
628 bool "Enable layout-aware eeprom commands"
629 depends on CMD_EEPROM
631 (deprecated, needs conversion to driver model)
632 When enabled, additional eeprom sub-commands become available.
634 eeprom print - prints the contents of the eeprom in a human-readable
635 way (eeprom layout fields, and data formatted to be fit for human
638 eeprom update - allows user to update eeprom fields by specifying
639 the field name, and providing the new data in a human readable format
640 (same format as displayed by the eeprom print command).
642 Both commands can either auto detect the layout, or be told which
646 __weak int parse_layout_version(char *str)
647 - override to provide your own layout name parsing
648 __weak void __eeprom_layout_assign(struct eeprom_layout *layout,
650 - override to setup the layout metadata based on the version
651 __weak int eeprom_layout_detect(unsigned char *data)
652 - override to provide your own algorithm for detecting layout
655 - contains various printing and updating functions for common
656 types of eeprom fields. Can be used for defining
659 config EEPROM_LAYOUT_HELP_STRING
660 string "Tells user what layout names are supported"
661 depends on CMD_EEPROM_LAYOUT
662 default "<not defined>"
664 Help printed with the LAYOUT VERSIONS part of the 'eeprom'
670 Infinite write loop on address range
677 Compute MD5 checksum.
682 depends on CMD_MD5SUM
684 Add -v option to verify data against an MD5 checksum.
689 Display memory information.
692 bool "md, mm, nm, mw, cp, cmp, base, loop"
697 mm - memory modify (auto-incrementing address)
698 nm - memory modify (constant address)
699 mw - memory write (fill)
702 base - print or set address offset
703 loop - initialize loop on address range
706 bool "Enable cyclic md/mw commands"
707 depends on CMD_MEMORY
709 Add the "mdc" and "mwc" memory commands. These are cyclic
714 This command will print 4 bytes (10,11,12,13) each 500 ms.
716 => mwc.l 100 12345678 10
717 This command will write 12345678 to address 100 all 10 ms.
722 depends on CMD_MEMORY && (LIB_RAND || LIB_HW_RAND)
724 random - fill memory with random data
729 Simple RAM read/write test.
733 config SYS_ALT_MEMTEST
734 bool "Alternative test"
736 Use a more complete alternative memory test.
743 mdc - memory display cyclic
744 mwc - memory write cyclic
750 Compute SHA1 checksum.
752 config SHA1SUM_VERIFY
754 depends on CMD_SHA1SUM
756 Add -v option to verify data against a SHA1 checksum.
759 bool "strings - display strings in memory"
761 This works similarly to the Unix 'strings' command except that it
762 works with a memory range. String of printable characters found
763 within the range are displayed. The minimum number of characters
764 for a sequence to be considered a string can be provided.
768 menu "Compression commands"
772 default y if CMD_BOOTI
775 Support decompressing an LZMA (Lempel-Ziv-Markov chain algorithm)
780 default y if CMD_BOOTI
782 Uncompress a zip-compressed memory region.
787 Compress a memory region with zlib deflate method.
791 menu "Device access commands"
794 #depends on FLASH_CFI_DRIVER
797 ARM Ltd reference designs flash partition access
800 bool "adc - Access Analog to Digital Converters info and data"
804 Shows ADC device info and permit printing one-shot analog converted
805 data from a named Analog to Digital Converter.
810 depends on PARTITIONS
812 Read/modify/write the fields of Bootloader Control Block, usually
813 stored on the flash "misc" partition with its structure defined in:
814 https://android.googlesource.com/platform/bootable/recovery/+/master/
815 bootloader_message/include/bootloader_message/bootloader_message.h
817 Some real-life use-cases include (but are not limited to):
818 - Determine the "boot reason" (and act accordingly):
819 https://source.android.com/devices/bootloader/boot-reason
820 - Get/pass a list of commands from/to recovery:
821 https://android.googlesource.com/platform/bootable/recovery
822 - Inspect/dump the contents of the BCB fields
825 bool "bind/unbind - Bind or unbind a device to/from a driver"
828 Bind or unbind a device to/from a driver from the command line.
829 This is useful in situations where a device may be handled by several
830 drivers. For example, this can be used to bind a UDC to the usb ether
831 gadget driver from the command line.
834 bool "clk - Show clock frequencies"
837 Shows clock frequences by calling a sock_clk_dump() hook function.
838 This is depreated in favour of using the CLK uclass and accessing
839 clock values from associated drivers. However currently no command
843 bool "demo - Demonstration commands for driver model"
846 Provides a 'demo' command which can be used to play around with
847 driver model. To use this properly you will need to enable one or
848 both of the demo devices (DM_DEMO_SHAPE and DM_DEMO_SIMPLE).
849 Otherwise you will always get an empty list of devices. The demo
850 devices are defined in the sandbox device tree, so the easiest
851 option is to use sandbox and pass the -d point to sandbox's
858 Enables the command "dfu" which is used to have U-Boot create a DFU
859 class device via USB. This command requires that the "dfu_alt_info"
860 environment variable be set and define the alt settings to expose to
864 bool "dm - Access to driver model information"
867 Provides access to driver model data structures and information,
868 such as a list of devices, list of uclasses and the state of each
869 device (e.g. activated). This is not required for operation, but
870 can be useful to see the state of driver model for debugging or
874 bool "fastboot - Android fastboot support"
877 This enables the command "fastboot" which enables the Android
878 fastboot mode for the platform. Fastboot is a protocol for
879 downloading images, flashing and device control used on
880 Android devices. Fastboot requires either the network stack
881 enabled or support for acting as a USB device.
883 See doc/android/fastboot.rst for more information.
886 bool "flinfo, erase, protect"
888 depends on MTD || FLASH_CFI_DRIVER || MTD_NOR_FLASH
891 flinfo - print FLASH memory information
893 protect - enable or disable FLASH write protection
902 config CMD_FPGA_LOADBP
903 bool "fpga loadbp - load partial bitstream (Xilinx only)"
906 Supports loading an FPGA device from a bitstream buffer containing
909 config CMD_FPGA_LOADFS
910 bool "fpga loadfs - load bitstream from FAT filesystem (Xilinx only)"
913 Supports loading an FPGA device from a FAT filesystem.
915 config CMD_FPGA_LOADMK
916 bool "fpga loadmk - load bitstream from image"
919 Supports loading an FPGA device from a image generated by mkimage.
921 config CMD_FPGA_LOADP
922 bool "fpga loadp - load partial bitstream"
925 Supports loading an FPGA device from a bitstream buffer containing
928 config CMD_FPGA_LOAD_SECURE
929 bool "fpga loads - loads secure bitstreams (Xilinx only)"
932 Enables the fpga loads command which is used to load secure
933 (authenticated or encrypted or both) bitstreams on to FPGA.
936 bool "fpgad - dump FPGA registers"
938 (legacy, needs conversion to driver model)
939 Provides a way to dump FPGA registers by calling the board-specific
940 fpga_get_reg() function. This functions similarly to the 'md'
944 bool "fuse - support for the fuse subssystem"
946 (deprecated - needs conversion to driver model)
947 This allows reading, sensing, programming or overriding fuses
948 which control the behaviour of the device. The command uses the
957 bool "GPT (GUID Partition Table) command"
959 select HAVE_BLOCK_DEVICE
960 select PARTITION_UUIDS
963 Enable the 'gpt' command to ready and write GPT style partition
967 bool "GPT Random UUID generation"
970 Enable the generation of partitions with random UUIDs if none
973 config CMD_GPT_RENAME
974 bool "GPT partition renaming commands"
977 Enables the 'gpt' command to interchange names on two GPT
978 partitions via the 'gpt swap' command or to rename single
979 partitions via the 'rename' command.
982 bool "ide - Support for IDE drivers"
985 Provides an 'ide' command which allows accessing the IDE drive,
986 reseting the IDE interface, printing the partition table and
987 geting device info. It also enables the 'diskboot' command which
988 permits booting from an IDE drive.
991 bool "io - Support for performing I/O accesses"
993 Provides an 'iod' command to display I/O space and an 'iow' command
994 to write values to the I/O space. This can be useful for manually
995 checking the state of devices during boot when debugging device
999 bool "iotrace - Support for tracing I/O activity"
1001 Provides an 'iotrace' command which supports recording I/O reads and
1002 writes in a trace buffer in memory . It also maintains a checksum
1003 of the trace records (even if space is exhausted) so that the
1004 sequence of I/O accesses can be verified.
1006 When debugging drivers it is useful to see what I/O accesses were
1007 done and in what order.
1009 Even if the individual accesses are of little interest it can be
1010 useful to verify that the access pattern is consistent each time
1011 an operation is performed. In this case a checksum can be used to
1012 characterise the operation of a driver. The checksum can be compared
1013 across different runs of the operation to verify that the driver is
1016 In particular, when performing major refactoring of the driver, where
1017 the access pattern should not change, the checksum provides assurance
1018 that the refactoring work has not broken the driver.
1020 This works by sneaking into the io.h heder for an architecture and
1021 redirecting I/O accesses through iotrace's tracing mechanism.
1023 For now no commands are provided to examine the trace buffer. The
1024 format is fairly simple, so 'md' is a reasonable substitute.
1026 Note: The checksum feature is only useful for I/O regions where the
1027 contents do not change outside of software control. Where this is not
1028 suitable you can fall back to manually comparing the addresses. It
1029 might be useful to enhance tracing to only checksum the accesses and
1030 not the data read/written.
1040 bool "w1 - Support for Dallas 1-Wire protocol"
1042 Dallas 1-wire protocol support
1048 Load a binary file over serial line.
1054 Load an S-Record file over serial line
1059 MMC memory mapped support.
1062 bool "Enable support for RPMB in the mmc command"
1065 Enable the commands for reading, writing and programming the
1066 key for the Replay Protection Memory Block partition in eMMC.
1068 config CMD_MMC_SWRITE
1070 depends on CMD_MMC && MMC_WRITE
1073 Enable support for the "mmc swrite" command to write Android sparse
1079 select MTD_PARTITIONS
1081 MTD commands support.
1085 default y if NAND_SUNXI
1086 depends on MTD_RAW_NAND
1091 config CMD_NAND_TRIMFFS
1092 bool "nand write.trimffs"
1093 default y if ARCH_SUNXI
1095 Allows one to skip empty pages when flashing something on a NAND.
1097 config CMD_NAND_LOCK_UNLOCK
1098 bool "nand lock/unlock"
1100 NAND locking support.
1102 config CMD_NAND_TORTURE
1105 NAND torture support.
1114 NVM Express device support
1117 bool "onenand - access to onenand device"
1120 OneNAND is a brand of NAND ('Not AND' gate) flash which provides
1121 various useful features. This command allows reading, writing,
1122 and erasing blocks. It allso provides a way to show and change
1123 bad blocks, and test the device.
1128 Enable the 'osd' command which allows to query information from and
1129 write text data to a on-screen display (OSD) device; a virtual device
1130 associated with a display capable of displaying a text overlay on the
1131 display it's associated with..
1135 select HAVE_BLOCK_DEVICE
1136 select PARTITION_UUIDS
1138 Read and display information about the partition table on
1142 bool "pci - Access PCI devices"
1144 Provide access to PCI (Peripheral Interconnect Bus), a type of bus
1145 used on some devices to allow the CPU to communicate with its
1146 peripherals. Sub-commands allow bus enumeration, displaying and
1147 changing configuration space and a few other features.
1150 bool "pinmux - show pins muxing"
1151 default y if PINCTRL
1153 Parse all available pin-controllers and show pins muxing. This
1154 is useful for debug purpoer to check the pin muxing and to know if
1155 a pin is configured as a GPIO or as an alternate function.
1160 Poweroff/Shutdown the system
1163 bool "read - Read binary data from a partition"
1165 Provides low-level access to the data in a partition.
1167 config CMD_REMOTEPROC
1169 depends on REMOTEPROC
1171 Support for Remote Processor control
1174 bool "sata - Access SATA subsystem"
1177 SATA (Serial Advanced Technology Attachment) is a serial bus
1178 standard for connecting to hard drives and other storage devices.
1179 This command provides information about attached devices and allows
1180 reading, writing and other operations.
1182 SATA replaces PATA (originally just ATA), which stands for Parallel AT
1183 Attachment, where AT refers to an IBM AT (Advanced Technology)
1184 computer released in 1984.
1187 bool "saves - Save a file over serial in S-Record format"
1189 Provides a way to save a binary file using the Motorola S-Record
1190 format over the serial line.
1193 bool "scsi - Access to SCSI devices"
1196 This provides a 'scsi' command which provides access to SCSI (Small
1197 Computer System Interface) devices. The command provides a way to
1198 scan the bus, reset the bus, read and write data and get information
1202 bool "sdram - Print SDRAM configuration information"
1204 Provides information about attached SDRAM. This assumed that the
1205 SDRAM has an EEPROM with information that can be read using the
1206 I2C bus. This is only available on some boards.
1210 depends on DM_SPI_FLASH || SPI_FLASH
1211 default y if DM_SPI_FLASH
1216 bool "sf test - Allow testing of SPI flash"
1219 Provides a way to test that SPI flash is working correctly. The
1220 test is destructive, in that an area of SPI flash must be provided
1221 for the test to use. Performance information is also provided,
1222 measuring the performance of reading, writing and erasing in
1223 Mbps (Million Bits Per Second). This value should approximately
1224 equal the SPI bus speed for a single-bit-wide SPI bus, assuming
1225 everything is working properly.
1228 bool "sspi - Command to access spi device"
1231 SPI utility command.
1233 config DEFAULT_SPI_BUS
1234 int "default spi bus used by sspi command"
1238 config DEFAULT_SPI_MODE
1239 hex "default spi mode used by sspi command (see include/spi.h)"
1244 bool "tsi148 - Command to access tsi148 device"
1246 This provides various sub-commands to initialise and configure the
1247 Turndra tsi148 device. See the command help for full details.
1250 bool "Enable UFS - Universal Flash Subsystem commands"
1253 "This provides commands to initialise and configure universal flash
1257 bool "universe - Command to set up the Turndra Universe controller"
1259 This allows setting up the VMEbus provided by this controller.
1260 See the command help for full details.
1264 select HAVE_BLOCK_DEVICE
1270 select USB_FUNCTION_SDP
1272 Enables the command "sdp" which is used to have U-Boot emulating the
1273 Serial Download Protocol (SDP) via USB.
1277 depends on USB_FUNCTION_ROCKUSB
1279 Rockusb protocol is widely used by Rockchip SoC based devices. It can
1280 read/write info, image to/from devices. This enable rockusb command
1281 support to communication with rockusb device. for more detail about
1282 this command, please read doc/README.rockusb.
1284 config CMD_USB_MASS_STORAGE
1285 bool "UMS usb mass storage"
1286 select USB_FUNCTION_MASS_STORAGE
1288 USB mass storage support
1295 VirtIO block device support
1301 This provides commands to control the watchdog timer devices.
1307 Enable the command "axi" for accessing AXI (Advanced eXtensible
1308 Interface) busses, a on-chip interconnect specification for managing
1309 functional blocks in SoC designs, which is also often used in designs
1310 involving FPGAs (e.g. communication with IP cores in Xilinx FPGAs).
1314 menu "Shell scripting commands"
1320 Echo args to console
1326 Return true/false on integer compare.
1332 Run script from memory
1338 Evaluate boolean and math expressions and store the result in an env
1340 Also supports loading the value at a memory location into a variable.
1341 If CONFIG_REGEX is enabled, setexpr also supports a gsub function.
1345 menu "Android support commands"
1347 config CMD_AB_SELECT
1350 depends on ANDROID_AB
1352 On Android devices with more than one boot slot (multiple copies of
1353 the kernel and system images) this provides a command to select which
1354 slot should be used to boot from and register the boot attempt. This
1355 is used by the new A/B update model where one slot is updated in the
1356 background while running from the other slot.
1363 bool "Network commands"
1373 bootp - boot image via network using BOOTP/TFTP protocol
1377 depends on CMD_BOOTP
1379 Boot image via network using DHCP/TFTP protocol
1381 config BOOTP_BOOTPATH
1382 bool "Request & store 'rootpath' from BOOTP/DHCP server"
1384 depends on CMD_BOOTP
1386 Even though the config is called BOOTP_BOOTPATH, it stores the
1387 path in the variable 'rootpath'.
1390 bool "Request & store 'dnsip' from BOOTP/DHCP server"
1392 depends on CMD_BOOTP
1394 The primary DNS server is stored as 'dnsip'. If two servers are
1395 returned, you must set BOOTP_DNS2 to store that second server IP
1399 bool "Store 'dnsip2' from BOOTP/DHCP server"
1400 depends on BOOTP_DNS
1402 If a DHCP client requests the DNS server IP from a DHCP server,
1403 it is possible that more than one DNS serverip is offered to the
1404 client. If CONFIG_BOOTP_DNS2 is enabled, the secondary DNS
1405 server IP will be stored in the additional environment
1406 variable "dnsip2". The first DNS serverip is always
1407 stored in the variable "dnsip", when BOOTP_DNS is defined.
1409 config BOOTP_GATEWAY
1410 bool "Request & store 'gatewayip' from BOOTP/DHCP server"
1412 depends on CMD_BOOTP
1414 config BOOTP_HOSTNAME
1415 bool "Request & store 'hostname' from BOOTP/DHCP server"
1417 depends on CMD_BOOTP
1419 The name may or may not be qualified with the local domain name.
1421 config BOOTP_PREFER_SERVERIP
1422 bool "serverip variable takes precedent over DHCP server IP."
1423 depends on CMD_BOOTP
1425 By default a BOOTP/DHCP reply will overwrite the 'serverip' variable.
1427 With this option enabled, the 'serverip' variable in the environment
1428 takes precedence over DHCP server IP and will only be set by the DHCP
1429 server if not already set in the environment.
1431 config BOOTP_SUBNETMASK
1432 bool "Request & store 'netmask' from BOOTP/DHCP server"
1434 depends on CMD_BOOTP
1436 config BOOTP_NTPSERVER
1437 bool "Request & store 'ntpserverip' from BOOTP/DHCP server"
1438 depends on CMD_BOOTP
1443 Selecting this will allow capturing all Ethernet packets and store
1444 them in physical memory in a PCAP formated file,
1445 later to be analyzed by PCAP reader application (IE. WireShark).
1448 bool "Send PXE client arch to BOOTP/DHCP server"
1450 depends on CMD_BOOTP && CMD_PXE
1452 Supported for ARM, ARM64, and x86 for now.
1454 config BOOTP_PXE_CLIENTARCH
1456 depends on BOOTP_PXE
1457 default 0x16 if ARM64
1461 config BOOTP_VCI_STRING
1463 depends on CMD_BOOTP
1464 default "U-Boot.armv7" if CPU_V7A || CPU_V7M || CPU_V7R
1465 default "U-Boot.armv8" if ARM64
1466 default "U-Boot.arm" if ARM
1473 tftpboot - boot image via network using TFTP protocol
1477 depends on CMD_TFTPBOOT
1479 TFTP put command, for uploading files to a server
1483 depends on CMD_TFTPBOOT
1485 Act as a TFTP server and boot the first received file
1487 config NET_TFTP_VARS
1488 bool "Control TFTP timeout and count through environment"
1489 depends on CMD_TFTPBOOT
1492 If set, allows controlling the TFTP timeout through the
1493 environment variable tftptimeout, and the TFTP maximum
1494 timeout count through the variable tftptimeoutcountmax.
1495 If unset, timeout and maximum are hard-defined as 1 second
1496 and 10 timouts per TFTP transfer.
1501 Boot image via network using RARP/TFTP protocol
1507 Boot image via network using NFS protocol.
1513 If set, allows 802.3(clause 22) MII Management functions interface access
1514 The management interface specified in Clause 22 provides
1515 a simple, two signal, serial interface to connect a
1516 Station Management entity and a managed PHY for providing access
1517 to management parameters and services.
1518 The interface is referred to as the MII management interface.
1524 If set, allows Enable 802.3(clause 45) MDIO interface registers access
1525 The MDIO interface is orthogonal to the MII interface and extends
1526 it by adding access to more registers through indirect addressing.
1531 Send ICMP ECHO_REQUEST to network host
1536 Perform CDP network configuration
1541 Synchronize RTC via network
1546 Lookup the IP of a hostname
1548 config CMD_LINK_LOCAL
1552 Acquire a network IP address using the link-local protocol
1559 Allow control of L2 Ethernet switch commands. These are supported
1560 by the vsc9953 Ethernet driver at present. Sub-commands allow
1561 operations such as enabling / disabling a port and
1562 viewing/maintaining the filtering database (FDB)
1568 Boot image via network using PXE protocol
1573 Wait for wake-on-lan Magic Packet
1577 menu "Misc commands"
1580 bool "Enable 'bmp' command"
1581 depends on LCD || DM_VIDEO || VIDEO
1583 This provides a way to obtain information about a BMP-format image
1584 and to display it. BMP (which presumably stands for BitMaP) is a
1585 file format defined by Microsoft which supports images of various
1586 depths, formats and compression methods. Headers on the file
1587 determine the formats used. This command can be used by first loading
1588 the image into RAM, then using this command to look at it or display
1591 config CMD_BOOTCOUNT
1593 depends on BOOTCOUNT_LIMIT
1595 Enable the bootcount command, which allows interrogation and
1596 reset of the bootcounter.
1599 bool "Enable board-specific commands"
1601 (deprecated: instead, please define a Kconfig option for each command)
1603 Some boards have board-specific commands which are only enabled
1604 during developemnt and need to be turned off for production. This
1605 option provides a way to control this. The commands that are enabled
1606 vary depending on the board.
1608 config CMD_BKOPS_ENABLE
1609 bool "mmc bkops enable"
1613 Enable command for setting manual background operations handshake
1614 on a eMMC device. The feature is optionally available on eMMC devices
1615 conforming to standard >= 4.41.
1617 config CMD_BLOCK_CACHE
1618 bool "blkcache - control and stats for block cache"
1619 depends on BLOCK_CACHE
1620 default y if BLOCK_CACHE
1622 Enable the blkcache command, which can be used to control the
1623 operation of the cache functions.
1624 This is most useful when fine-tuning the operation of the cache
1625 during development, but also allows the cache to be disabled when
1626 it might hurt performance (e.g. when using the ums command).
1629 bool "icache or dcache"
1631 Enable the "icache" and "dcache" commands
1633 config CMD_CONITRACE
1634 bool "conitrace - trace console input codes"
1636 Enable the 'conitrace' command which displays the codes received
1637 from the console input as hexadecimal numbers.
1640 bool "Enable clear screen command 'cls'"
1641 depends on CFB_CONSOLE || DM_VIDEO || LCD || VIDEO
1644 Enable the 'cls' command which clears the screen contents
1645 on video frame buffer.
1648 bool "efidebug - display/configure UEFI environment"
1649 depends on EFI_LOADER
1650 select EFI_DEVICE_PATH_TO_TEXT
1653 Enable the 'efidebug' command which provides a subset of UEFI
1654 shell utility with simplified functionality. It will be useful
1655 particularly for managing boot parameters as well as examining
1656 various EFI status for debugging.
1658 config CMD_EXCEPTION
1659 bool "exception - raise exception"
1660 depends on ARM || RISCV || X86
1662 Enable the 'exception' command which allows to raise an exception.
1669 Enable the 'led' command which allows for control of LEDs supported
1670 by the board. The LEDs can be listed with 'led list' and controlled
1671 with led on/off/togle/blink. Any LED drivers can be controlled with
1672 this command, e.g. led_gpio.
1679 Enable the 'date' command for getting/setting the time/date in RTC
1685 Run commands and summarize execution time.
1688 bool "gettime - read elapsed time"
1690 Enable the 'gettime' command which reads the elapsed time since
1691 U-Boot started running. This shows the time in seconds and
1692 milliseconds. See also the 'bootstage' command which provides more
1693 flexibility for boot timing.
1700 Print bytes from the hardware random number generator.
1702 # TODO: rename to CMD_SLEEP
1707 Delay execution for some time
1710 bool "support for multiprocessor"
1712 This provides an option to brinup
1713 different processors in multiprocessor
1719 Access the system timer.
1725 This provides basic access to the U-Boot's sound support. The main
1726 feature is to play a beep.
1728 sound init - set up sound system
1729 sound play - play a sound
1735 Boot image via local extlinux.conf file
1741 This provides access to the QEMU firmware interface. The main
1742 feature is to allow easy loading of files passed to qemu-system
1743 via -kernel / -initrd
1745 source "cmd/mvebu/Kconfig"
1748 bool "terminal - provides a way to attach a serial terminal"
1750 Provides a 'cu'-like serial terminal command. This can be used to
1751 access other serial ports from the system console. The terminal
1752 is very simple with no special processing of characters. As with
1753 cu, you can press ~. (tilde followed by period) to exit.
1756 bool "uuid, guid - generation of unique IDs"
1759 This enables two commands:
1761 uuid - generate random Universally Unique Identifier
1762 guid - generate Globally Unique Identifier based on random UUID
1764 The two commands are very similar except for the endianness of the
1769 source "cmd/ti/Kconfig"
1771 config CMD_BOOTSTAGE
1772 bool "Enable the 'bootstage' command"
1773 depends on BOOTSTAGE
1775 Add a 'bootstage' command which supports printing a report
1776 and un/stashing of bootstage data.
1778 menu "Power commands"
1780 bool "Enable Driver Model PMIC command"
1783 This is the pmic command, based on a driver model pmic's API.
1784 Command features are unchanged:
1785 - list - list pmic devices
1786 - pmic dev <id> - show or [set] operating pmic device (NEW)
1787 - pmic dump - dump registers
1788 - pmic read address - read byte of register at address
1789 - pmic write address - write byte to register at address
1790 The only one change for this command is 'dev' subcommand.
1792 config CMD_REGULATOR
1793 bool "Enable Driver Model REGULATOR command"
1794 depends on DM_REGULATOR
1796 This command is based on driver model regulator's API.
1797 User interface features:
1798 - list - list regulator devices
1799 - regulator dev <id> - show or [set] operating regulator device
1800 - regulator info - print constraints info
1801 - regulator status - print operating status
1802 - regulator value <val] <-f> - print/[set] voltage value [uV]
1803 - regulator current <val> - print/[set] current value [uA]
1804 - regulator mode <id> - print/[set] operating mode id
1805 - regulator enable - enable the regulator output
1806 - regulator disable - disable the regulator output
1808 The '-f' (force) option can be used for set the value which exceeds
1809 the limits, which are found in device-tree and are kept in regulator's
1810 uclass platdata structure.
1814 menu "Security commands"
1816 bool "Enable the 'aes' command"
1819 This provides a means to encrypt and decrypt data using the AES
1820 (Advanced Encryption Standard). This algorithm uses a symetric key
1821 and is widely used as a streaming cipher. Different key lengths are
1822 supported by the algorithm but this command only supports 128 bits
1826 bool "Enable the 'blob' command"
1828 This is used with the Freescale secure boot mechanism.
1830 Freescale's SEC block has built-in Blob Protocol which provides
1831 a method for protecting user-defined data across system power
1832 cycles. SEC block protects data in a data structure called a Blob,
1833 which provides both confidentiality and integrity protection.
1835 Encapsulating data as a blob
1836 Each time that the Blob Protocol is used to protect data, a
1837 different randomly generated key is used to encrypt the data.
1838 This random key is itself encrypted using a key which is derived
1839 from SoC's non-volatile secret key and a 16 bit Key identifier.
1840 The resulting encrypted key along with encrypted data is called a
1841 blob. The non-volatile secure key is available for use only during
1844 During decapsulation, the reverse process is performed to get back
1848 blob enc - encapsulating data as a cryptgraphic blob
1849 blob dec - decapsulating cryptgraphic blob to get the data
1853 blob enc src dst len km
1855 Encapsulate and create blob of data $len bytes long
1856 at address $src and store the result at address $dst.
1857 $km is the 16 byte key modifier is also required for
1858 generation/use as key for cryptographic operation. Key
1859 modifier should be 16 byte long.
1861 blob dec src dst len km
1863 Decapsulate the blob of data at address $src and
1864 store result of $len byte at addr $dst.
1865 $km is the 16 byte key modifier is also required for
1866 generation/use as key for cryptographic operation. Key
1867 modifier should be 16 byte long.
1870 bool "Support 'hash' command"
1873 This provides a way to hash data in memory using various supported
1874 algorithms (such as SHA1, MD5, CRC32). The computed digest can be
1875 saved to memory or to an environment variable. It is also possible
1876 to verify a hash against data in memory.
1879 bool "Support the 'hvc' command"
1880 depends on ARM_SMCCC
1882 Allows issuing Hypervisor Calls (HVCs). Mostly useful for
1883 development and testing.
1886 bool "Support the 'smc' command"
1887 depends on ARM_SMCCC
1889 Allows issuing Secure Monitor Calls (SMCs). Mostly useful for
1890 development and testing.
1896 Add -v option to verify data against a hash.
1906 bool "Enable the 'tpm' command"
1907 depends on TPM_V1 || TPM_V2
1908 select CMD_TPM_V1 if TPM_V1
1909 select CMD_TPM_V2 if TPM_V2
1911 This provides a means to talk to a TPM from the command line. A wide
1912 range of commands if provided - see 'tpm help' for details. The
1913 command requires a suitable TPM on your board and the correct driver
1919 bool "Enable the 'tpm test' command"
1922 This provides a a series of tests to confirm that the TPMv1.x is
1923 working correctly. The tests cover initialisation, non-volatile RAM,
1924 extend, global lock and checking that timing is within expectations.
1925 The tests pass correctly on Infineon TPMs but may need to be adjusted
1932 menu "Firmware commands"
1934 bool "Enable crosec command"
1938 Enable command-line access to the Chrome OS EC (Embedded
1939 Controller). This provides the 'crosec' command which has
1940 a number of sub-commands for performing EC tasks such as
1941 updating its flash, accessing a small saved context area
1942 and talking to the I2C bus behind the EC (if there is one).
1945 menu "Filesystem commands"
1947 bool "Enable the 'btrsubvol' command"
1950 This enables the 'btrsubvol' command to list subvolumes
1951 of a BTRFS filesystem. There are no special commands for
1952 listing BTRFS directories or loading BTRFS files - this
1953 can be done by the generic 'fs' commands (see CMD_FS_GENERIC)
1954 when BTRFS is enabled (see FS_BTRFS).
1957 bool "Enable the 'cbfs' command"
1960 Define this to enable support for reading from a Coreboot
1961 filesystem. This is a ROM-based filesystem used for accessing files
1962 on systems that use coreboot as the first boot-loader and then load
1963 U-Boot to actually boot the Operating System. Available commands are
1964 cbfsinit, cbfsinfo, cbfsls and cbfsload.
1967 bool "Enable the 'cramfs' command"
1968 depends on FS_CRAMFS
1970 This provides commands for dealing with CRAMFS (Compressed ROM
1971 filesystem). CRAMFS is useful when space is tight since files are
1972 compressed. Two commands are provided:
1974 cramfsls - lists files in a cramfs image
1975 cramfsload - loads a file from a cramfs image
1978 bool "ext2 command support"
1981 Enables EXT2 FS command
1984 bool "ext4 command support"
1987 Enables EXT4 FS command
1989 config CMD_EXT4_WRITE
1991 bool "ext4 write command support"
1994 Enables EXT4 FS write command
1997 bool "FAT command support"
2000 Support for the FAT fs
2002 config CMD_FS_GENERIC
2003 bool "filesystem commands"
2005 Enables filesystem commands (e.g. load, ls) that work for multiple
2009 bool "fsuuid command"
2011 Enables fsuuid command for filesystem UUID.
2014 bool "jffs2 command"
2017 Enables commands to support the JFFS2 (Journalling Flash File System
2018 version 2) filesystem. This enables fsload, ls and fsinfo which
2019 provide the ability to load files, list directories and obtain
2020 filesystem information.
2023 bool "MTD partition support"
2026 MTD partitioning tool support.
2027 It is strongly encouraged to avoid using this command
2028 anymore along with 'sf', 'nand', 'onenand'. One can still
2029 declare the partitions in the mtdparts environment variable
2030 but better use the MTD stack and the 'mtd' command instead.
2032 config CMD_MTDPARTS_SPREAD
2033 bool "Padd partition size to take account of bad blocks"
2034 depends on CMD_MTDPARTS
2036 This enables the 'spread' sub-command of the mtdparts command.
2037 This command will modify the existing mtdparts variable by increasing
2038 the size of the partitions such that 1) each partition's net size is
2039 at least as large as the size specified in the mtdparts variable and
2040 2) each partition starts on a good block.
2042 config CMD_MTDPARTS_SHOW_NET_SIZES
2043 bool "Show net size (w/o bad blocks) of partitions"
2044 depends on CMD_MTDPARTS
2046 Adds two columns to the printed partition table showing the
2047 effective usable size of a partition, if bad blocks are taken
2050 config MTDIDS_DEFAULT
2051 string "Default MTD IDs"
2052 depends on MTD || SPI_FLASH
2054 Defines a default MTD IDs list for use with MTD partitions in the
2055 Linux MTD command line partitions format.
2057 config MTDPARTS_DEFAULT
2058 string "Default MTD partition scheme"
2059 depends on MTD || SPI_FLASH
2061 Defines a default MTD partitioning scheme in the Linux MTD command
2062 line partitions format
2065 bool "reiser - Access to reiserfs filesystems"
2067 This provides two commands which operate on a resierfs filesystem,
2068 commonly used some years ago:
2070 reiserls - list files
2071 reiserload - load a file
2074 bool "yaffs2 - Access of YAFFS2 filesystem"
2078 This provides commands for accessing a YAFFS2 filesystem. Yet
2079 Another Flash Filesystem 2 is a filesystem designed specifically
2080 for NAND flash. It incorporates bad-block management and ensures
2081 that device writes are sequential regardless of filesystem
2085 bool "zfs - Access of ZFS filesystem"
2087 This provides commands to accessing a ZFS filesystem, commonly used
2088 on Solaris systems. Two sub-commands are provided:
2090 zfsls - list files in a directory
2091 zfsload - load a file
2093 See doc/README.zfs for more details.
2097 menu "Debug commands"
2102 The bedbug (emBEDded deBUGger) command provides debugging features
2103 for some PowerPC processors. For details please see the
2104 docuemntation in doc/README.beddbug
2107 bool "diag - Board diagnostics"
2109 This command provides access to board diagnostic tests. These are
2110 called Power-on Self Tests (POST). The command allows listing of
2111 available tests and running either all the tests, or specific tests
2115 bool "irq - Show information about interrupts"
2116 depends on !ARM && !MIPS && !SH
2118 This enables two commands:
2120 interrupts - enable or disable interrupts
2121 irqinfo - print device-specific interrupt information
2124 bool "kgdb - Allow debugging of U-Boot with gdb"
2127 This enables a 'kgdb' command which allows gdb to connect to U-Boot
2128 over a serial link for debugging purposes. This allows
2129 single-stepping, inspecting variables, etc. This is supported only
2130 on PowerPC at present.
2133 bool "log - Generation, control and access to logging"
2136 This provides access to logging features. It allows the output of
2137 log data to be controlled to a limited extent (setting up the default
2138 maximum log level for emitting of records). It also provides access
2139 to a command used for testing the log system.
2142 bool "trace - Support tracing of function calls and timing"
2144 Enables a command to control using of function tracing within
2145 U-Boot. This allows recording of call traces including timing
2146 information. The command can write data to memory for exporting
2147 for analysis (e.g. using bootchart). See doc/README.trace for full
2151 bool "avb - Android Verified Boot 2.0 operations"
2152 depends on AVB_VERIFY
2155 Enables a "avb" command to perform verification of partitions using
2156 Android Verified Boot 2.0 functionality. It includes such subcommands:
2157 avb init - initialize avb2 subsystem
2158 avb read_rb - read rollback index
2159 avb write_rb - write rollback index
2160 avb is_unlocked - check device lock state
2161 avb get_uuid - read and print uuid of a partition
2162 avb read_part - read data from partition
2163 avb read_part_hex - read data from partition and output to stdout
2164 avb write_part - write data to partition
2165 avb verify - run full verification chain
2169 tristate "Enable UBI - Unsorted block images commands"
2172 UBI is a software layer above MTD layer which admits use of LVM-like
2173 logical volumes on top of MTD devices, hides some complexities of
2174 flash chips like wear and bad blocks and provides some other useful
2175 capabilities. Please, consult the MTD web site for more details
2176 (www.linux-mtd.infradead.org). Activate this option if you want
2177 to use U-Boot UBI commands.
2178 It is also strongly encouraged to also enable CONFIG_MTD to get full
2182 tristate "Enable UBIFS - Unsorted block images filesystem commands"
2184 default y if CMD_UBI
2187 UBIFS is a file system for flash devices which works on top of UBI.
projects / oweals / u-boot.git / blob