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
175 Run the command stored in the environment "bootcmd", i.e.
176 "bootd" does the same thing as "run bootcmd".
182 Boot an application image from the memory.
187 Boot the Linux zImage
194 Boot an AArch64 Linux Kernel image from memory.
198 depends on EFI_LOADER
201 Boot an EFI image from memory.
203 config CMD_BOOTEFI_HELLO_COMPILE
204 bool "Compile a standard EFI hello world binary for testing"
205 depends on CMD_BOOTEFI && (ARM || X86)
208 This compiles a standard EFI hello world application with U-Boot so
209 that it can be used with the test/py testing framework. This is useful
210 for testing that EFI is working at a basic level, and for bringing
211 up EFI support on a new architecture.
213 No additional space will be required in the resulting U-Boot binary
214 when this option is enabled.
216 config CMD_BOOTEFI_HELLO
217 bool "Allow booting a standard EFI hello world for testing"
218 depends on CMD_BOOTEFI_HELLO_COMPILE
220 This adds a standard EFI hello world application to U-Boot so that
221 it can be used with the 'bootefi hello' command. This is useful
222 for testing that EFI is working at a basic level, and for bringing
223 up EFI support on a new architecture.
229 Add an ANSI terminal boot menu command.
232 bool "bootelf, bootvx"
235 Boot an ELF/vxWorks image from the memory.
238 bool "Flattened Device Tree utility commands"
242 Do FDT related setup before booting into the Operating System.
248 Start an application at a given address.
254 Run the command in the given environment variable.
260 Print header information for application image.
266 List all images found in flash
272 Extract a part of a multi-image.
277 Poweroff/Shutdown the system
280 bool "spl export - Export boot information for Falcon boot"
283 Falcon mode allows booting directly from SPL into an Operating
284 System such as Linux, thus skipping U-Boot proper. See
285 doc/README.falcon for full information about how to use this
290 menu "Environment commands"
293 bool "ask for env variable"
295 Ask for environment variable
313 Edit environment variable.
318 Allow for searching environment variables
324 Save all environment variables into the compiled-in persistent
327 config CMD_ENV_EXISTS
331 Check if a variable is defined in the environment for use in
334 config CMD_ENV_CALLBACK
335 bool "env callbacks - print callbacks and their associated variables"
337 Some environment variable have callbacks defined by
338 U_BOOT_ENV_CALLBACK. These are called when the variable changes.
339 For example changing "baudrate" adjust the serial baud rate. This
340 command lists the currently defined callbacks.
343 bool "env flags -print variables that have non-default flags"
345 Some environment variables have special flags that control their
346 behaviour. For example, serial# can only be written once and cannot
347 be deleted. This command shows the variables that have special
352 menu "Memory commands"
355 bool "md, mm, nm, mw, cp, cmp, base, loop"
360 mm - memory modify (auto-incrementing address)
361 nm - memory modify (constant address)
362 mw - memory write (fill)
365 base - print or set address offset
366 loop - initialize loop on address range
379 Add -v option to verify data against a crc32 checksum.
382 bool "eeprom - EEPROM subsystem"
384 (deprecated, needs conversion to driver model)
385 Provides commands to read and write EEPROM (Electrically Erasable
386 Programmable Read Only Memory) chips that are connected over an
389 config CMD_EEPROM_LAYOUT
390 bool "Enable layout-aware eeprom commands"
391 depends on CMD_EEPROM
393 (deprecated, needs conversion to driver model)
394 When enabled, additional eeprom sub-commands become available.
396 eeprom print - prints the contents of the eeprom in a human-readable
397 way (eeprom layout fields, and data formatted to be fit for human
400 eeprom update - allows user to update eeprom fields by specifying
401 the field name, and providing the new data in a human readable format
402 (same format as displayed by the eeprom print command).
404 Both commands can either auto detect the layout, or be told which
408 __weak int parse_layout_version(char *str)
409 - override to provide your own layout name parsing
410 __weak void __eeprom_layout_assign(struct eeprom_layout *layout,
412 - override to setup the layout metadata based on the version
413 __weak int eeprom_layout_detect(unsigned char *data)
414 - override to provide your own algorithm for detecting layout
417 - contains various printing and updating functions for common
418 types of eeprom fields. Can be used for defining
421 config EEPROM_LAYOUT_HELP_STRING
422 string "Tells user what layout names are supported"
423 depends on CMD_EEPROM_LAYOUT
424 default "<not defined>"
426 Help printed with the LAYOUT VERSIONS part of the 'eeprom'
434 Compute MD5 checksum.
439 depends on CMD_MD5SUM
441 Add -v option to verify data against an MD5 checksum.
447 Compute SHA1 checksum.
449 config SHA1SUM_VERIFY
451 depends on CMD_SHA1SUM
453 Add -v option to verify data against a SHA1 checksum.
458 Infinite write loop on address range
463 Simple RAM read/write test.
468 mdc - memory display cyclic
469 mwc - memory write cyclic
474 Display memory information.
478 menu "Compression commands"
484 Support decompressing an LZMA (Lempel-Ziv-Markov chain algorithm)
490 Uncompress a zip-compressed memory region.
495 Compress a memory region with zlib deflate method.
499 menu "Device access commands"
502 #depends on FLASH_CFI_DRIVER
505 ARM Ltd reference designs flash partition access
508 bool "clk - Show clock frequencies"
511 Shows clock frequences by calling a sock_clk_dump() hook function.
512 This is depreated in favour of using the CLK uclass and accessing
513 clock values from associated drivers. However currently no command
517 bool "demo - Demonstration commands for driver model"
520 Provides a 'demo' command which can be used to play around with
521 driver model. To use this properly you will need to enable one or
522 both of the demo devices (DM_DEMO_SHAPE and DM_DEMO_SIMPLE).
523 Otherwise you will always get an empty list of devices. The demo
524 devices are defined in the sandbox device tree, so the easiest
525 option is to use sandbox and pass the -d point to sandbox's
530 select USB_FUNCTION_DFU
532 Enables the command "dfu" which is used to have U-Boot create a DFU
533 class device via USB.
536 bool "dm - Access to driver model information"
540 Provides access to driver model data structures and information,
541 such as a list of devices, list of uclasses and the state of each
542 device (e.g. activated). This is not required for operation, but
543 can be useful to see the state of driver model for debugging or
547 bool "fdcboot - Boot from floppy device"
549 The 'fdtboot' command allows booting an image from a floppy disk.
552 bool "flinfo, erase, protect"
556 flinfo - print FLASH memory information
558 protect - enable or disable FLASH write protection
566 config CMD_FPGA_LOADBP
567 bool "fpga loadbp - load partial bitstream (Xilinx only)"
570 Supports loading an FPGA device from a bitstream buffer containing
573 config CMD_FPGA_LOADFS
574 bool "fpga loadfs - load bitstream from FAT filesystem (Xilinx only)"
577 Supports loading an FPGA device from a FAT filesystem.
579 config CMD_FPGA_LOADMK
580 bool "fpga loadmk - load bitstream from image"
583 Supports loading an FPGA device from a image generated by mkimage.
585 config CMD_FPGA_LOADP
586 bool "fpga loadp - load partial bitstream"
589 Supports loading an FPGA device from a bitstream buffer containing
593 bool "fpgad - dump FPGA registers"
595 (legacy, needs conversion to driver model)
596 Provides a way to dump FPGA registers by calling the board-specific
597 fpga_get_reg() function. This functions similarly to the 'md'
601 bool "fuse - support for the fuse subssystem"
603 (deprecated - needs conversion to driver model)
604 This allows reading, sensing, programming or overriding fuses
605 which control the behaviour of the device. The command uses the
614 bool "GPT (GUID Partition Table) command"
615 select PARTITION_UUIDS
618 Enable the 'gpt' command to ready and write GPT style partition
621 config CMD_GPT_RENAME
622 bool "GPT partition renaming commands"
625 Enables the 'gpt' command to interchange names on two GPT
626 partitions via the 'gpt swap' command or to rename single
627 partitions via the 'rename' command.
630 bool "ide - Support for IDE drivers"
633 Provides an 'ide' command which allows accessing the IDE drive,
634 reseting the IDE interface, printing the partition table and
635 geting device info. It also enables the 'diskboot' command which
636 permits booting from an IDE drive.
639 bool "io - Support for performing I/O accesses"
641 Provides an 'iod' command to display I/O space and an 'iow' command
642 to write values to the I/O space. This can be useful for manually
643 checking the state of devices during boot when debugging device
647 bool "iotrace - Support for tracing I/O activity"
649 Provides an 'iotrace' command which supports recording I/O reads and
650 writes in a trace buffer in memory . It also maintains a checksum
651 of the trace records (even if space is exhausted) so that the
652 sequence of I/O accesses can be verified.
654 When debugging drivers it is useful to see what I/O accesses were
655 done and in what order.
657 Even if the individual accesses are of little interest it can be
658 useful to verify that the access pattern is consistent each time
659 an operation is performed. In this case a checksum can be used to
660 characterise the operation of a driver. The checksum can be compared
661 across different runs of the operation to verify that the driver is
664 In particular, when performing major refactoring of the driver, where
665 the access pattern should not change, the checksum provides assurance
666 that the refactoring work has not broken the driver.
668 This works by sneaking into the io.h heder for an architecture and
669 redirecting I/O accesses through iotrace's tracing mechanism.
671 For now no commands are provided to examine the trace buffer. The
672 format is fairly simple, so 'md' is a reasonable substitute.
674 Note: The checksum feature is only useful for I/O regions where the
675 contents do not change outside of software control. Where this is not
676 suitable you can fall back to manually comparing the addresses. It
677 might be useful to enhance tracing to only checksum the accesses and
678 not the data read/written.
689 Load a binary file over serial line.
695 Load an S-Record file over serial line
700 MMC memory mapped support.
704 default y if NAND_SUNXI
709 config CMD_NAND_TRIMFFS
710 bool "nand write.trimffs"
711 default y if ARCH_SUNXI
713 Allows one to skip empty pages when flashing something on a NAND.
715 config CMD_NAND_LOCK_UNLOCK
716 bool "nand lock/unlock"
718 NAND locking support.
720 config CMD_NAND_TORTURE
723 NAND torture support.
728 bool "mmc_spi - Set up MMC SPI device"
730 Provides a way to set up an MMC (Multimedia Card) SPI (Serial
731 Peripheral Interface) device. The device provides a means of
732 accessing an MMC device via SPI using a single data line, limited
733 to 20MHz. It is useful since it reduces the amount of protocol code
737 bool "onenand - access to onenand device"
739 OneNAND is a brand of NAND ('Not AND' gate) flash which provides
740 various useful features. This command allows reading, writing,
741 and erasing blocks. It allso provides a way to show and change
742 bad blocks, and test the device.
746 select PARTITION_UUIDS
748 Read and display information about the partition table on
752 bool "pci - Access PCI devices"
754 Provide access to PCI (Peripheral Interconnect Bus), a type of bus
755 used on some devices to allow the CPU to communicate with its
756 peripherals. Sub-commands allow bus enumeration, displaying and
757 changing configuration space and a few other features.
760 bool "pinit - Set up PCMCIA device"
762 Provides a means to initialise a PCMCIA (Personal Computer Memory
763 Card International Association) device. This is an old standard from
764 about 1990. These devices are typically removable memory or network
765 cards using a standard 68-pin connector.
768 bool "read - Read binary data from a partition"
770 Provides low-level access to the data in a partition.
772 config CMD_REMOTEPROC
774 depends on REMOTEPROC
776 Support for Remote Processor control
779 bool "sata - Access SATA subsystem"
782 SATA (Serial Advanced Technology Attachment) is a serial bus
783 standard for connecting to hard drives and other storage devices.
784 This command provides information about attached devices and allows
785 reading, writing and other operations.
787 SATA replaces PATA (originally just ATA), which stands for Parallel AT
788 Attachment, where AT refers to an IBM AT (Advanced Technology)
789 computer released in 1984.
792 bool "saves - Save a file over serial in S-Record format"
794 Provides a way to save a binary file using the Motorola S-Record
795 format over the serial line.
798 bool "sdram - Print SDRAM configuration information"
800 Provides information about attached SDRAM. This assumed that the
801 SDRAM has an EEPROM with information that can be read using the
802 I2C bus. This is only available on some boards.
810 bool "sf test - Allow testing of SPI flash"
812 Provides a way to test that SPI flash is working correctly. The
813 test is destructive, in that an area of SPI flash must be provided
814 for the test to use. Performance information is also provided,
815 measuring the performance of reading, writing and erasing in
816 Mbps (Million Bits Per Second). This value should approximately
817 equal the SPI bus speed for a single-bit-wide SPI bus, assuming
818 everything is working properly.
830 config CMD_USB_MASS_STORAGE
831 bool "UMS usb mass storage"
833 USB mass storage support
838 menu "Shell scripting commands"
850 Return true/false on integer compare.
856 Run script from memory
862 Evaluate boolean and math expressions and store the result in an env
864 Also supports loading the value at a memory location into a variable.
865 If CONFIG_REGEX is enabled, setexpr also supports a gsub function.
869 menu "Network commands"
872 bool "bootp, tftpboot"
877 bootp - boot image via network using BOOTP/TFTP protocol
878 tftpboot - boot image via network using TFTP protocol
883 TFTP put command, for uploading files to a server
888 Act as a TFTP server and boot the first received file
893 Boot image via network using RARP/TFTP protocol
898 Boot image via network using DHCP/TFTP protocol
904 Boot image via network using PXE protocol
910 Boot image via network using NFS protocol.
915 Enable MII utility commands.
920 Send ICMP ECHO_REQUEST to network host
925 Perform CDP network configuration
930 Synchronize RTC via network
935 Lookup the IP of a hostname
937 config CMD_LINK_LOCAL
940 Acquire a network IP address using the link-local protocol
945 Allow control of L2 Ethernet switch commands. These are supported
946 by the vsc9953 Ethernet driver at present. Sub-commands allow
947 operations such as enabling / disabling a port and
948 viewing/maintaining the filtering database (FDB)
955 bool "Enable 'bmp' command"
956 depends on LCD || DM_VIDEO || VIDEO
958 This provides a way to obtain information about a BMP-format iamge
959 and to display it. BMP (which presumably stands for BitMaP) is a
960 file format defined by Microsoft which supports images of various
961 depths, formats and compression methods. Headers on the file
962 determine the formats used. This command can be used by first loading
963 the image into RAM, then using this command to look at it or display
967 bool "Enable board-specific commands"
969 (deprecated: instead, please define a Kconfig option for each command)
971 Some boards have board-specific commands which are only enabled
972 during developemnt and need to be turned off for production. This
973 option provides a way to control this. The commands that are enabled
974 vary depending on the board.
976 config CMD_BKOPS_ENABLE
977 bool "mmc bkops enable"
981 Enable command for setting manual background operations handshake
982 on a eMMC device. The feature is optionally available on eMMC devices
983 conforming to standard >= 4.41.
985 config CMD_BLOCK_CACHE
986 bool "blkcache - control and stats for block cache"
987 depends on BLOCK_CACHE
988 default y if BLOCK_CACHE
990 Enable the blkcache command, which can be used to control the
991 operation of the cache functions.
992 This is most useful when fine-tuning the operation of the cache
993 during development, but also allows the cache to be disabled when
994 it might hurt performance (e.g. when using the ums command).
997 bool "icache or dcache"
999 Enable the "icache" and "dcache" commands
1002 bool "Enable the 'display' command, for character displays"
1004 (this needs porting to driver model)
1005 This enables the 'display' command which allows a string to be
1006 displayed on a simple board-specific display. Implement
1007 display_putc() to use it.
1013 Enable the 'led' command which allows for control of LEDs supported
1014 by the board. The LEDs can be listed with 'led list' and controlled
1015 with led on/off/togle/blink. Any LED drivers can be controlled with
1016 this command, e.g. led_gpio.
1022 Enable the 'date' command for getting/setting the time/date in RTC
1028 Run commands and summarize execution time.
1031 bool "gettime - read elapsed time"
1033 Enable the 'gettime' command which reads the elapsed time since
1034 U-Boot started running. This shows the time in seconds and
1035 milliseconds. See also the 'bootstage' command which provides more
1036 flexibility for boot timing.
1038 # TODO: rename to CMD_SLEEP
1043 Delay execution for some time
1048 Access the system timer.
1054 This provides basic access to the U-Boot's sound support. The main
1055 feature is to play a beep.
1057 sound init - set up sound system
1058 sound play - play a sound
1064 This provides access to the QEMU firmware interface. The main
1065 feature is to allow easy loading of files passed to qemu-system
1066 via -kernel / -initrd
1068 source "cmd/mvebu/Kconfig"
1072 config CMD_BOOTSTAGE
1073 bool "Enable the 'bootstage' command"
1074 depends on BOOTSTAGE
1076 Add a 'bootstage' command which supports printing a report
1077 and un/stashing of bootstage data.
1079 menu "Power commands"
1081 bool "Enable Driver Model PMIC command"
1084 This is the pmic command, based on a driver model pmic's API.
1085 Command features are unchanged:
1086 - list - list pmic devices
1087 - pmic dev <id> - show or [set] operating pmic device (NEW)
1088 - pmic dump - dump registers
1089 - pmic read address - read byte of register at address
1090 - pmic write address - write byte to register at address
1091 The only one change for this command is 'dev' subcommand.
1093 config CMD_REGULATOR
1094 bool "Enable Driver Model REGULATOR command"
1095 depends on DM_REGULATOR
1097 This command is based on driver model regulator's API.
1098 User interface features:
1099 - list - list regulator devices
1100 - regulator dev <id> - show or [set] operating regulator device
1101 - regulator info - print constraints info
1102 - regulator status - print operating status
1103 - regulator value <val] <-f> - print/[set] voltage value [uV]
1104 - regulator current <val> - print/[set] current value [uA]
1105 - regulator mode <id> - print/[set] operating mode id
1106 - regulator enable - enable the regulator output
1107 - regulator disable - disable the regulator output
1109 The '-f' (force) option can be used for set the value which exceeds
1110 the limits, which are found in device-tree and are kept in regulator's
1111 uclass platdata structure.
1115 menu "Security commands"
1117 bool "Enable the 'aes' command"
1120 This provides a means to encrypt and decrypt data using the AES
1121 (Advanced Encryption Standard). This algorithm uses a symetric key
1122 and is widely used as a streaming cipher. Different key lengths are
1123 supported by the algorithm but this command only supports 128 bits
1127 bool "Enable the 'blob' command"
1129 This is used with the Freescale secure boot mechanism.
1131 Freescale's SEC block has built-in Blob Protocol which provides
1132 a method for protecting user-defined data across system power
1133 cycles. SEC block protects data in a data structure called a Blob,
1134 which provides both confidentiality and integrity protection.
1136 Encapsulating data as a blob
1137 Each time that the Blob Protocol is used to protect data, a
1138 different randomly generated key is used to encrypt the data.
1139 This random key is itself encrypted using a key which is derived
1140 from SoC's non-volatile secret key and a 16 bit Key identifier.
1141 The resulting encrypted key along with encrypted data is called a
1142 blob. The non-volatile secure key is available for use only during
1145 During decapsulation, the reverse process is performed to get back
1149 blob enc - encapsulating data as a cryptgraphic blob
1150 blob dec - decapsulating cryptgraphic blob to get the data
1154 blob enc src dst len km
1156 Encapsulate and create blob of data $len bytes long
1157 at address $src and store the result at address $dst.
1158 $km is the 16 byte key modifier is also required for
1159 generation/use as key for cryptographic operation. Key
1160 modifier should be 16 byte long.
1162 blob dec src dst len km
1164 Decapsulate the blob of data at address $src and
1165 store result of $len byte at addr $dst.
1166 $km is the 16 byte key modifier is also required for
1167 generation/use as key for cryptographic operation. Key
1168 modifier should be 16 byte long.
1171 bool "Support 'hash' command"
1174 This provides a way to hash data in memory using various supported
1175 algorithms (such as SHA1, MD5, CRC32). The computed digest can be
1176 saved to memory or to an environment variable. It is also possible
1177 to verify a hash against data in memory.
1183 Add -v option to verify data against a hash.
1186 bool "Enable the 'tpm' command"
1189 This provides a means to talk to a TPM from the command line. A wide
1190 range of commands if provided - see 'tpm help' for details. The
1191 command requires a suitable TPM on your board and the correct driver
1195 bool "Enable the 'tpm test' command"
1198 This provides a a series of tests to confirm that the TPM is working
1199 correctly. The tests cover initialisation, non-volatile RAM, extend,
1200 global lock and checking that timing is within expectations. The
1201 tests pass correctly on Infineon TPMs but may need to be adjusted
1206 menu "Firmware commands"
1208 bool "Enable crosec command"
1212 Enable command-line access to the Chrome OS EC (Embedded
1213 Controller). This provides the 'crosec' command which has
1214 a number of sub-commands for performing EC tasks such as
1215 updating its flash, accessing a small saved context area
1216 and talking to the I2C bus behind the EC (if there is one).
1219 menu "Filesystem commands"
1221 bool "Enable the 'cbfs' command"
1224 Define this to enable support for reading from a Coreboot
1225 filesystem. This is a ROM-based filesystem used for accessing files
1226 on systems that use coreboot as the first boot-loader and then load
1227 U-Boot to actually boot the Operating System. Available commands are
1228 cbfsinit, cbfsinfo, cbfsls and cbfsload.
1231 bool "Enable the 'cramfs' command"
1232 depends on FS_CRAMFS
1234 This provides commands for dealing with CRAMFS (Compressed ROM
1235 filesystem). CRAMFS is useful when space is tight since files are
1236 compressed. Two commands are provided:
1238 cramfsls - lists files in a cramfs image
1239 cramfsload - loads a file from a cramfs image
1242 bool "ext2 command support"
1244 Enables EXT2 FS command
1247 bool "ext4 command support"
1249 Enables EXT4 FS command
1251 config CMD_EXT4_WRITE
1253 bool "ext4 write command support"
1255 Enables EXT4 FS write command
1258 bool "FAT command support"
1261 Support for the FAT fs
1263 config CMD_FS_GENERIC
1264 bool "filesystem commands"
1266 Enables filesystem commands (e.g. load, ls) that work for multiple
1270 bool "fsuuid command"
1272 Enables fsuuid command for filesystem UUID.
1275 bool "jffs2 command"
1278 Enables commands to support the JFFS2 (Journalling Flash File System
1279 version 2) filesystem. This enables fsload, ls and fsinfo which
1280 provide the ability to load files, list directories and obtain
1281 filesystem information.
1284 bool "MTD partition support"
1286 MTD partition support
1288 config MTDIDS_DEFAULT
1289 string "Default MTD IDs"
1290 depends on CMD_MTDPARTS
1292 Defines a default MTD ID
1294 config MTDPARTS_DEFAULT
1295 string "Default MTD partition scheme"
1296 depends on CMD_MTDPARTS
1298 Defines a default MTD partitioning scheme in the Linux MTD command
1299 line partitions format
1301 config CMD_MTDPARTS_SPREAD
1302 bool "Padd partition size to take account of bad blocks"
1303 depends on CMD_MTDPARTS
1305 This enables the 'spread' sub-command of the mtdparts command.
1306 This command will modify the existing mtdparts variable by increasing
1307 the size of the partitions such that 1) each partition's net size is
1308 at least as large as the size specified in the mtdparts variable and
1309 2) each partition starts on a good block.
1312 bool "reiser - Access to reiserfs filesystems"
1314 This provides two commands which operate on a resierfs filesystem,
1315 commonly used some years ago:
1317 reiserls - list files
1318 reiserload - load a file
1321 bool "scsi - Access to SCSI devices"
1324 This provides a 'scsi' command which provides access to SCSI (Small
1325 Computer System Interface) devices. The command provides a way to
1326 scan the bus, reset the bus, read and write data and get information
1331 menu "Debug commands"
1336 The bedbug (emBEDded deBUGger) command provides debugging features
1337 for some PowerPC processors. For details please see the
1338 docuemntation in doc/README.beddbug
1341 bool "diag - Board diagnostics"
1343 This command provides access to board diagnostic tests. These are
1344 called Power-on Self Tests (POST). The command allows listing of
1345 available tests and running either all the tests, or specific tests
1349 bool "irq - Show information about interrupts"
1350 depends on !ARM && !MIPS && !SH
1352 This enables two commands:
1354 interrupts - enable or disable interrupts
1355 irqinfo - print device-specific interrupt information
1358 bool "kgdb - Allow debugging of U-Boot with gdb"
1360 This enables a 'kgdb' command which allows gdb to connect to U-Boot
1361 over a serial link for debugging purposes. This allows
1362 single-stepping, inspecting variables, etc. This is supported only
1363 on PowerPC at present.
1368 tristate "Enable UBI - Unsorted block images commands"
1372 default y if NAND_SUNXI
1374 UBI is a software layer above MTD layer which admits use of LVM-like
1375 logical volumes on top of MTD devices, hides some complexities of
1376 flash chips like wear and bad blocks and provides some other useful
1377 capabilities. Please, consult the MTD web site for more details
1378 (www.linux-mtd.infradead.org). Activate this option if you want
1379 to use U-Boot UBI commands.
1382 tristate "Enable UBIFS - Unsorted block images filesystem commands"
1386 default y if CMD_UBI
1388 UBIFS is a file system for flash devices which works on top of UBI.
projects / platform / kernel / u-boot.git / blob