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.
30 This string is displayed in the command line to the left of the
33 menu "Autoboot options"
39 This enables the autoboot. See doc/README.autoboot for detail.
42 bool "Stop autobooting via specific input key / string"
45 This option enables stopping (aborting) of the automatic
46 boot feature only by issuing a specific input key or
47 string. If not enabled, any input key will abort the
48 U-Boot automatic booting process and bring the device
49 to the U-Boot prompt for user input.
51 config AUTOBOOT_PROMPT
52 string "Autoboot stop prompt"
53 depends on AUTOBOOT_KEYED
54 default "Autoboot in %d seconds\\n"
56 This string is displayed before the boot delay selected by
57 CONFIG_BOOTDELAY starts. If it is not defined there is no
58 output indicating that autoboot is in progress.
60 Note that this define is used as the (only) argument to a
61 printf() call, so it may contain '%' format specifications,
62 provided that it also includes, sepearated by commas exactly
63 like in a printf statement, the required arguments. It is
64 the responsibility of the user to select only such arguments
65 that are valid in the given context.
67 config AUTOBOOT_ENCRYPTION
68 bool "Enable encryption in autoboot stopping"
69 depends on AUTOBOOT_KEYED
72 config AUTOBOOT_DELAY_STR
73 string "Delay autobooting via specific input key / string"
74 depends on AUTOBOOT_KEYED && !AUTOBOOT_ENCRYPTION
76 This option delays the automatic boot feature by issuing
77 a specific input key or string. If CONFIG_AUTOBOOT_DELAY_STR
78 or the environment variable "bootdelaykey" is specified
79 and this string is received from console input before
80 autoboot starts booting, U-Boot gives a command prompt. The
81 U-Boot prompt will time out if CONFIG_BOOT_RETRY_TIME is
82 used, otherwise it never times out.
84 config AUTOBOOT_STOP_STR
85 string "Stop autobooting via specific input key / string"
86 depends on AUTOBOOT_KEYED && !AUTOBOOT_ENCRYPTION
88 This option enables stopping (aborting) of the automatic
89 boot feature only by issuing a specific input key or
90 string. If CONFIG_AUTOBOOT_STOP_STR or the environment
91 variable "bootstopkey" is specified and this string is
92 received from console input before autoboot starts booting,
93 U-Boot gives a command prompt. The U-Boot prompt never
94 times out, even if CONFIG_BOOT_RETRY_TIME is used.
96 config AUTOBOOT_KEYED_CTRLC
97 bool "Enable Ctrl-C autoboot interruption"
98 depends on AUTOBOOT_KEYED && !AUTOBOOT_ENCRYPTION
101 This option allows for the boot sequence to be interrupted
102 by ctrl-c, in addition to the "bootdelaykey" and "bootstopkey".
103 Setting this variable provides an escape sequence from the
104 limited "password" strings.
106 config AUTOBOOT_STOP_STR_SHA256
107 string "Stop autobooting via SHA256 encrypted password"
108 depends on AUTOBOOT_KEYED && AUTOBOOT_ENCRYPTION
110 This option adds the feature to only stop the autobooting,
111 and therefore boot into the U-Boot prompt, when the input
112 string / password matches a values that is encypted via
113 a SHA256 hash and saved in the environment.
117 source "cmd/fastboot/Kconfig"
134 Print ".config" contents.
136 If this option is enabled, the ".config" file contents are embedded
137 in the U-Boot image and can be printed on the console by the "config"
138 command. This provides information of which options are enabled on
145 Print console devices and information.
150 Print information about available CPUs. This normally shows the
151 number of CPUs, type (e.g. manufacturer, architecture, product or
152 internal name) and clock frequency. Other information may be
153 available depending on the CPU driver.
159 Print GPL license text
169 Run the command stored in the environment "bootcmd", i.e.
170 "bootd" does the same thing as "run bootcmd".
176 Boot an application image from the memory.
181 Boot the Linux zImage
188 Boot an AArch64 Linux Kernel image from memory.
192 depends on EFI_LOADER
195 Boot an EFI image from memory.
197 config CMD_BOOTEFI_HELLO_COMPILE
198 bool "Compile a standard EFI hello world binary for testing"
199 depends on CMD_BOOTEFI && (ARM || X86)
202 This compiles a standard EFI hello world application with U-Boot so
203 that it can be used with the test/py testing framework. This is useful
204 for testing that EFI is working at a basic level, and for bringing
205 up EFI support on a new architecture.
207 No additional space will be required in the resulting U-Boot binary
208 when this option is enabled.
210 config CMD_BOOTEFI_HELLO
211 bool "Allow booting a standard EFI hello world for testing"
212 depends on CMD_BOOTEFI_HELLO_COMPILE
214 This adds a standard EFI hello world application to U-Boot so that
215 it can be used with the 'bootefi hello' command. This is useful
216 for testing that EFI is working at a basic level, and for bringing
217 up EFI support on a new architecture.
223 Add an ANSI terminal boot menu command.
226 bool "bootelf, bootvx"
229 Boot an ELF/vxWorks image from the memory.
232 bool "Flattened Device Tree utility commands"
236 Do FDT related setup before booting into the Operating System.
242 Start an application at a given address.
248 Run the command in the given environment variable.
254 Print header information for application image.
260 List all images found in flash
266 Extract a part of a multi-image.
271 Poweroff/Shutdown the system
275 menu "Environment commands"
278 bool "ask for env variable"
280 Ask for environment variable
298 Edit environment variable.
303 Allow for searching environment variables
309 Save all environment variables into the compiled-in persistent
312 config CMD_ENV_EXISTS
316 Check if a variable is defined in the environment for use in
319 config CMD_ENV_CALLBACK
320 bool "env callbacks - print callbacks and their associated variables"
322 Some environment variable have callbacks defined by
323 U_BOOT_ENV_CALLBACK. These are called when the variable changes.
324 For example changing "baudrate" adjust the serial baud rate. This
325 command lists the currently defined callbacks.
328 bool "env flags -print variables that have non-default flags"
330 Some environment variables have special flags that control their
331 behaviour. For example, serial# can only be written once and cannot
332 be deleted. This command shows the variables that have special
337 menu "Memory commands"
340 bool "md, mm, nm, mw, cp, cmp, base, loop"
345 mm - memory modify (auto-incrementing address)
346 nm - memory modify (constant address)
347 mw - memory write (fill)
350 base - print or set address offset
351 loop - initialize loop on address range
364 Add -v option to verify data against a crc32 checksum.
367 bool "eeprom - EEPROM subsystem"
369 (deprecated, needs conversion to driver model)
370 Provides commands to read and write EEPROM (Electrically Erasable
371 Programmable Read Only Memory) chips that are connected over an
374 config CMD_EEPROM_LAYOUT
375 bool "Enable layout-aware eeprom commands"
376 depends on CMD_EEPROM
378 (deprecated, needs conversion to driver model)
379 When enabled, additional eeprom sub-commands become available.
381 eeprom print - prints the contents of the eeprom in a human-readable
382 way (eeprom layout fields, and data formatted to be fit for human
385 eeprom update - allows user to update eeprom fields by specifying
386 the field name, and providing the new data in a human readable format
387 (same format as displayed by the eeprom print command).
389 Both commands can either auto detect the layout, or be told which
393 __weak int parse_layout_version(char *str)
394 - override to provide your own layout name parsing
395 __weak void __eeprom_layout_assign(struct eeprom_layout *layout,
397 - override to setup the layout metadata based on the version
398 __weak int eeprom_layout_detect(unsigned char *data)
399 - override to provide your own algorithm for detecting layout
402 - contains various printing and updating functions for common
403 types of eeprom fields. Can be used for defining
406 config EEPROM_LAYOUT_HELP_STRING
407 string "Tells user what layout names are supported"
408 depends on CMD_EEPROM_LAYOUT
409 default "<not defined>"
411 Help printed with the LAYOUT VERSIONS part of the 'eeprom'
419 Compute MD5 checksum.
424 depends on CMD_MD5SUM
426 Add -v option to verify data against an MD5 checksum.
432 Compute SHA1 checksum.
434 config SHA1SUM_VERIFY
436 depends on CMD_SHA1SUM
438 Add -v option to verify data against a SHA1 checksum.
443 Infinite write loop on address range
448 Simple RAM read/write test.
453 mdc - memory display cyclic
454 mwc - memory write cyclic
459 Display memory information.
463 menu "Compression commands"
469 Support decompressing an LZMA (Lempel-Ziv-Markov chain algorithm)
475 Uncompress a zip-compressed memory region.
480 Compress a memory region with zlib deflate method.
484 menu "Device access commands"
487 #depends on FLASH_CFI_DRIVER
490 ARM Ltd reference designs flash partition access
493 bool "clk - Show clock frequencies"
496 Shows clock frequences by calling a sock_clk_dump() hook function.
497 This is depreated in favour of using the CLK uclass and accessing
498 clock values from associated drivers. However currently no command
502 bool "demo - Demonstration commands for driver model"
505 Provides a 'demo' command which can be used to play around with
506 driver model. To use this properly you will need to enable one or
507 both of the demo devices (DM_DEMO_SHAPE and DM_DEMO_SIMPLE).
508 Otherwise you will always get an empty list of devices. The demo
509 devices are defined in the sandbox device tree, so the easiest
510 option is to use sandbox and pass the -d point to sandbox's
515 select USB_FUNCTION_DFU
517 Enables the command "dfu" which is used to have U-Boot create a DFU
518 class device via USB.
521 bool "dm - Access to driver model information"
525 Provides access to driver model data structures and information,
526 such as a list of devices, list of uclasses and the state of each
527 device (e.g. activated). This is not required for operation, but
528 can be useful to see the state of driver model for debugging or
532 bool "fdcboot - Boot from floppy device"
534 The 'fdtboot' command allows booting an image from a floppy disk.
537 bool "flinfo, erase, protect"
541 flinfo - print FLASH memory information
543 protect - enable or disable FLASH write protection
551 config CMD_FPGA_LOADBP
552 bool "fpga loadbp - load partial bitstream (Xilinx only)"
555 Supports loading an FPGA device from a bitstream buffer containing
558 config CMD_FPGA_LOADFS
559 bool "fpga loadfs - load bitstream from FAT filesystem (Xilinx only)"
562 Supports loading an FPGA device from a FAT filesystem.
564 config CMD_FPGA_LOADMK
565 bool "fpga loadmk - load bitstream from image"
568 Supports loading an FPGA device from a image generated by mkimage.
570 config CMD_FPGA_LOADP
571 bool "fpga loadp - load partial bitstream"
574 Supports loading an FPGA device from a bitstream buffer containing
578 bool "fpgad - dump FPGA registers"
580 (legacy, needs conversion to driver model)
581 Provides a way to dump FPGA registers by calling the board-specific
582 fpga_get_reg() function. This functions similarly to the 'md'
586 bool "fuse - support for the fuse subssystem"
588 (deprecated - needs conversion to driver model)
589 This allows reading, sensing, programming or overriding fuses
590 which control the behaviour of the device. The command uses the
599 bool "GPT (GUID Partition Table) command"
600 select PARTITION_UUIDS
603 Enable the 'gpt' command to ready and write GPT style partition
606 config CMD_GPT_RENAME
607 bool "GPT partition renaming commands"
610 Enables the 'gpt' command to interchange names on two GPT
611 partitions via the 'gpt swap' command or to rename single
612 partitions via the 'rename' command.
615 bool "ide - Support for IDE drivers"
618 Provides an 'ide' command which allows accessing the IDE drive,
619 reseting the IDE interface, printing the partition table and
620 geting device info. It also enables the 'diskboot' command which
621 permits booting from an IDE drive.
624 bool "io - Support for performing I/O accesses"
626 Provides an 'iod' command to display I/O space and an 'iow' command
627 to write values to the I/O space. This can be useful for manually
628 checking the state of devices during boot when debugging device
632 bool "iotrace - Support for tracing I/O activity"
634 Provides an 'iotrace' command which supports recording I/O reads and
635 writes in a trace buffer in memory . It also maintains a checksum
636 of the trace records (even if space is exhausted) so that the
637 sequence of I/O accesses can be verified.
639 When debugging drivers it is useful to see what I/O accesses were
640 done and in what order.
642 Even if the individual accesses are of little interest it can be
643 useful to verify that the access pattern is consistent each time
644 an operation is performed. In this case a checksum can be used to
645 characterise the operation of a driver. The checksum can be compared
646 across different runs of the operation to verify that the driver is
649 In particular, when performing major refactoring of the driver, where
650 the access pattern should not change, the checksum provides assurance
651 that the refactoring work has not broken the driver.
653 This works by sneaking into the io.h heder for an architecture and
654 redirecting I/O accesses through iotrace's tracing mechanism.
656 For now no commands are provided to examine the trace buffer. The
657 format is fairly simple, so 'md' is a reasonable substitute.
659 Note: The checksum feature is only useful for I/O regions where the
660 contents do not change outside of software control. Where this is not
661 suitable you can fall back to manually comparing the addresses. It
662 might be useful to enhance tracing to only checksum the accesses and
663 not the data read/written.
674 Load a binary file over serial line.
680 Load an S-Record file over serial line
685 MMC memory mapped support.
689 default y if NAND_SUNXI
694 config CMD_NAND_TRIMFFS
695 bool "nand write.trimffs"
696 default y if ARCH_SUNXI
698 Allows one to skip empty pages when flashing something on a NAND.
700 config CMD_NAND_LOCK_UNLOCK
701 bool "nand lock/unlock"
703 NAND locking support.
705 config CMD_NAND_TORTURE
708 NAND torture support.
713 bool "mmc_spi - Set up MMC SPI device"
715 Provides a way to set up an MMC (Multimedia Card) SPI (Serial
716 Peripheral Interface) device. The device provides a means of
717 accessing an MMC device via SPI using a single data line, limited
718 to 20MHz. It is useful since it reduces the amount of protocol code
722 bool "onenand - access to onenand device"
724 OneNAND is a brand of NAND ('Not AND' gate) flash which provides
725 various useful features. This command allows reading, writing,
726 and erasing blocks. It allso provides a way to show and change
727 bad blocks, and test the device.
731 select PARTITION_UUIDS
733 Read and display information about the partition table on
736 config CMD_REMOTEPROC
738 depends on REMOTEPROC
740 Support for Remote Processor control
743 bool "sata - Access SATA subsystem"
746 SATA (Serial Advanced Technology Attachment) is a serial bus
747 standard for connecting to hard drives and other storage devices.
748 This command provides information about attached devices and allows
749 reading, writing and other operations.
751 SATA replaces PATA (originally just ATA), which stands for Parallel AT
752 Attachment, where AT refers to an IBM AT (Advanced Technology)
753 computer released in 1984.
770 config CMD_USB_MASS_STORAGE
771 bool "UMS usb mass storage"
773 USB mass storage support
778 menu "Shell scripting commands"
790 Return true/false on integer compare.
796 Run script from memory
802 Evaluate boolean and math expressions and store the result in an env
804 Also supports loading the value at a memory location into a variable.
805 If CONFIG_REGEX is enabled, setexpr also supports a gsub function.
809 menu "Network commands"
812 bool "bootp, tftpboot"
817 bootp - boot image via network using BOOTP/TFTP protocol
818 tftpboot - boot image via network using TFTP protocol
823 TFTP put command, for uploading files to a server
828 Act as a TFTP server and boot the first received file
833 Boot image via network using RARP/TFTP protocol
838 Boot image via network using DHCP/TFTP protocol
844 Boot image via network using PXE protocol
850 Boot image via network using NFS protocol.
855 Enable MII utility commands.
860 Send ICMP ECHO_REQUEST to network host
865 Perform CDP network configuration
870 Synchronize RTC via network
875 Lookup the IP of a hostname
877 config CMD_LINK_LOCAL
880 Acquire a network IP address using the link-local protocol
885 Allow control of L2 Ethernet switch commands. These are supported
886 by the vsc9953 Ethernet driver at present. Sub-commands allow
887 operations such as enabling / disabling a port and
888 viewing/maintaining the filtering database (FDB)
895 bool "Enable 'bmp' command"
896 depends on LCD || DM_VIDEO || VIDEO
898 This provides a way to obtain information about a BMP-format iamge
899 and to display it. BMP (which presumably stands for BitMaP) is a
900 file format defined by Microsoft which supports images of various
901 depths, formats and compression methods. Headers on the file
902 determine the formats used. This command can be used by first loading
903 the image into RAM, then using this command to look at it or display
907 bool "Enable board-specific commands"
909 (deprecated: instead, please define a Kconfig option for each command)
911 Some boards have board-specific commands which are only enabled
912 during developemnt and need to be turned off for production. This
913 option provides a way to control this. The commands that are enabled
914 vary depending on the board.
916 config CMD_BKOPS_ENABLE
917 bool "mmc bkops enable"
921 Enable command for setting manual background operations handshake
922 on a eMMC device. The feature is optionally available on eMMC devices
923 conforming to standard >= 4.41.
925 config CMD_BLOCK_CACHE
926 bool "blkcache - control and stats for block cache"
927 depends on BLOCK_CACHE
928 default y if BLOCK_CACHE
930 Enable the blkcache command, which can be used to control the
931 operation of the cache functions.
932 This is most useful when fine-tuning the operation of the cache
933 during development, but also allows the cache to be disabled when
934 it might hurt performance (e.g. when using the ums command).
937 bool "icache or dcache"
939 Enable the "icache" and "dcache" commands
942 bool "Enable the 'display' command, for character displays"
944 (this needs porting to driver model)
945 This enables the 'display' command which allows a string to be
946 displayed on a simple board-specific display. Implement
947 display_putc() to use it.
953 Enable the 'led' command which allows for control of LEDs supported
954 by the board. The LEDs can be listed with 'led list' and controlled
955 with led on/off/togle/blink. Any LED drivers can be controlled with
956 this command, e.g. led_gpio.
962 Enable the 'date' command for getting/setting the time/date in RTC
968 Run commands and summarize execution time.
971 bool "gettime - read elapsed time"
973 Enable the 'gettime' command which reads the elapsed time since
974 U-Boot started running. This shows the time in seconds and
975 milliseconds. See also the 'bootstage' command which provides more
976 flexibility for boot timing.
978 # TODO: rename to CMD_SLEEP
983 Delay execution for some time
988 Access the system timer.
994 This provides basic access to the U-Boot's sound support. The main
995 feature is to play a beep.
997 sound init - set up sound system
998 sound play - play a sound
1004 This provides access to the QEMU firmware interface. The main
1005 feature is to allow easy loading of files passed to qemu-system
1006 via -kernel / -initrd
1008 source "cmd/mvebu/Kconfig"
1012 config CMD_BOOTSTAGE
1013 bool "Enable the 'bootstage' command"
1014 depends on BOOTSTAGE
1016 Add a 'bootstage' command which supports printing a report
1017 and un/stashing of bootstage data.
1019 menu "Power commands"
1021 bool "Enable Driver Model PMIC command"
1024 This is the pmic command, based on a driver model pmic's API.
1025 Command features are unchanged:
1026 - list - list pmic devices
1027 - pmic dev <id> - show or [set] operating pmic device (NEW)
1028 - pmic dump - dump registers
1029 - pmic read address - read byte of register at address
1030 - pmic write address - write byte to register at address
1031 The only one change for this command is 'dev' subcommand.
1033 config CMD_REGULATOR
1034 bool "Enable Driver Model REGULATOR command"
1035 depends on DM_REGULATOR
1037 This command is based on driver model regulator's API.
1038 User interface features:
1039 - list - list regulator devices
1040 - regulator dev <id> - show or [set] operating regulator device
1041 - regulator info - print constraints info
1042 - regulator status - print operating status
1043 - regulator value <val] <-f> - print/[set] voltage value [uV]
1044 - regulator current <val> - print/[set] current value [uA]
1045 - regulator mode <id> - print/[set] operating mode id
1046 - regulator enable - enable the regulator output
1047 - regulator disable - disable the regulator output
1049 The '-f' (force) option can be used for set the value which exceeds
1050 the limits, which are found in device-tree and are kept in regulator's
1051 uclass platdata structure.
1055 menu "Security commands"
1057 bool "Enable the 'aes' command"
1060 This provides a means to encrypt and decrypt data using the AES
1061 (Advanced Encryption Standard). This algorithm uses a symetric key
1062 and is widely used as a streaming cipher. Different key lengths are
1063 supported by the algorithm but this command only supports 128 bits
1067 bool "Enable the 'blob' command"
1069 This is used with the Freescale secure boot mechanism.
1071 Freescale's SEC block has built-in Blob Protocol which provides
1072 a method for protecting user-defined data across system power
1073 cycles. SEC block protects data in a data structure called a Blob,
1074 which provides both confidentiality and integrity protection.
1076 Encapsulating data as a blob
1077 Each time that the Blob Protocol is used to protect data, a
1078 different randomly generated key is used to encrypt the data.
1079 This random key is itself encrypted using a key which is derived
1080 from SoC's non-volatile secret key and a 16 bit Key identifier.
1081 The resulting encrypted key along with encrypted data is called a
1082 blob. The non-volatile secure key is available for use only during
1085 During decapsulation, the reverse process is performed to get back
1089 blob enc - encapsulating data as a cryptgraphic blob
1090 blob dec - decapsulating cryptgraphic blob to get the data
1094 blob enc src dst len km
1096 Encapsulate and create blob of data $len bytes long
1097 at address $src and store the result at address $dst.
1098 $km is the 16 byte key modifier is also required for
1099 generation/use as key for cryptographic operation. Key
1100 modifier should be 16 byte long.
1102 blob dec src dst len km
1104 Decapsulate the blob of data at address $src and
1105 store result of $len byte at addr $dst.
1106 $km is the 16 byte key modifier is also required for
1107 generation/use as key for cryptographic operation. Key
1108 modifier should be 16 byte long.
1111 bool "Support 'hash' command"
1114 This provides a way to hash data in memory using various supported
1115 algorithms (such as SHA1, MD5, CRC32). The computed digest can be
1116 saved to memory or to an environment variable. It is also possible
1117 to verify a hash against data in memory.
1123 Add -v option to verify data against a hash.
1126 bool "Enable the 'tpm' command"
1129 This provides a means to talk to a TPM from the command line. A wide
1130 range of commands if provided - see 'tpm help' for details. The
1131 command requires a suitable TPM on your board and the correct driver
1135 bool "Enable the 'tpm test' command"
1138 This provides a a series of tests to confirm that the TPM is working
1139 correctly. The tests cover initialisation, non-volatile RAM, extend,
1140 global lock and checking that timing is within expectations. The
1141 tests pass correctly on Infineon TPMs but may need to be adjusted
1146 menu "Firmware commands"
1148 bool "Enable crosec command"
1152 Enable command-line access to the Chrome OS EC (Embedded
1153 Controller). This provides the 'crosec' command which has
1154 a number of sub-commands for performing EC tasks such as
1155 updating its flash, accessing a small saved context area
1156 and talking to the I2C bus behind the EC (if there is one).
1159 menu "Filesystem commands"
1161 bool "Enable the 'cbfs' command"
1164 Define this to enable support for reading from a Coreboot
1165 filesystem. This is a ROM-based filesystem used for accessing files
1166 on systems that use coreboot as the first boot-loader and then load
1167 U-Boot to actually boot the Operating System. Available commands are
1168 cbfsinit, cbfsinfo, cbfsls and cbfsload.
1171 bool "Enable the 'cramfs' command"
1172 depends on FS_CRAMFS
1174 This provides commands for dealing with CRAMFS (Compressed ROM
1175 filesystem). CRAMFS is useful when space is tight since files are
1176 compressed. Two commands are provided:
1178 cramfsls - lists files in a cramfs image
1179 cramfsload - loads a file from a cramfs image
1182 bool "ext2 command support"
1184 Enables EXT2 FS command
1187 bool "ext4 command support"
1189 Enables EXT4 FS command
1191 config CMD_EXT4_WRITE
1193 bool "ext4 write command support"
1195 Enables EXT4 FS write command
1198 bool "FAT command support"
1201 Support for the FAT fs
1203 config CMD_FS_GENERIC
1204 bool "filesystem commands"
1206 Enables filesystem commands (e.g. load, ls) that work for multiple
1210 bool "fsuuid command"
1212 Enables fsuuid command for filesystem UUID.
1215 bool "jffs2 command"
1218 Enables commands to support the JFFS2 (Journalling Flash File System
1219 version 2) filesystem. This enables fsload, ls and fsinfo which
1220 provide the ability to load files, list directories and obtain
1221 filesystem information.
1224 bool "MTD partition support"
1226 MTD partition support
1228 config MTDIDS_DEFAULT
1229 string "Default MTD IDs"
1230 depends on CMD_MTDPARTS
1232 Defines a default MTD ID
1234 config MTDPARTS_DEFAULT
1235 string "Default MTD partition scheme"
1236 depends on CMD_MTDPARTS
1238 Defines a default MTD partitioning scheme in the Linux MTD command
1239 line partitions format
1241 config CMD_MTDPARTS_SPREAD
1242 bool "Padd partition size to take account of bad blocks"
1243 depends on CMD_MTDPARTS
1245 This enables the 'spread' sub-command of the mtdparts command.
1246 This command will modify the existing mtdparts variable by increasing
1247 the size of the partitions such that 1) each partition's net size is
1248 at least as large as the size specified in the mtdparts variable and
1249 2) each partition starts on a good block.
1253 menu "Debug commands"
1258 The bedbug (emBEDded deBUGger) command provides debugging features
1259 for some PowerPC processors. For details please see the
1260 docuemntation in doc/README.beddbug
1263 bool "diag - Board diagnostics"
1265 This command provides access to board diagnostic tests. These are
1266 called Power-on Self Tests (POST). The command allows listing of
1267 available tests and running either all the tests, or specific tests
1271 bool "irq - Show information about interrupts"
1272 depends on !ARM && !MIPS && !SH
1274 This enables two commands:
1276 interrupts - enable or disable interrupts
1277 irqinfo - print device-specific interrupt information
1280 bool "kgdb - Allow debugging of U-Boot with gdb"
1282 This enables a 'kgdb' command which allows gdb to connect to U-Boot
1283 over a serial link for debugging purposes. This allows
1284 single-stepping, inspecting variables, etc. This is supported only
1285 on PowerPC at present.
1290 tristate "Enable UBI - Unsorted block images commands"
1294 default y if NAND_SUNXI
1296 UBI is a software layer above MTD layer which admits use of LVM-like
1297 logical volumes on top of MTD devices, hides some complexities of
1298 flash chips like wear and bad blocks and provides some other useful
1299 capabilities. Please, consult the MTD web site for more details
1300 (www.linux-mtd.infradead.org). Activate this option if you want
1301 to use U-Boot UBI commands.
1304 tristate "Enable UBIFS - Unsorted block images filesystem commands"
1308 default y if CMD_UBI
1310 UBIFS is a file system for flash devices which works on top of UBI.
projects / oweals / u-boot.git / blob