The U-boot console lets you execute a lot of CLI type commands. It's a bit like using an Amiga or
Linux shell but a very basic one with no short-cuts. You can display information about your hardware,
display and set environment variables, boot an operating system etc. It should be noted that some of
these have changed with different versions of U-Boot.
The following commands are supported by U-Boot:
askenv - get environment variables from stdin
askenv name [message] [size]
- get environment variable 'name' from stdin (max 'size' chars)
askenv name
- get environment variable 'name' from stdin
askenv name size
- get environment variable 'name' from stdin (max 'size' chars)
askenv name message size
- display 'message' string and get environment variable 'name'
from stdin (max 'size' chars)
autoscr - run script from memory
autoscr [addr]
- run script starting at addr.
A valid autoscr header must be present.
base - print or set address offset
base
- print address offset for memory commands
base off
- set address offset for memory commands to 'off'
bdinfo - print Board Info structure
boota - boot an Amiga kernel
bootd - boot default, i.e., run 'bootcmd'
bootelf - boot from an ELF image in memory
bootelf [address]
- load address of ELF image.
bootm - boot application image from memory
bootm [addr [arg ...]]
- boot application image stored in memory passing arguments
'arg ...'; when booting a Linux kernel, 'arg' can be
the address of an initrd image
bootp - boot image via network using BootP/TFTP protocol
bootp [loadAddress] [bootfilename]
bootvx - boot vxWorks from an ELF image
bootvx [address]
- load address of vxWorks ELF image.
cmp - memory compare
cmp [.b, .w, .l] addr1 addr2 count
- compare memory
coninfo - print console devices and informations
cp - memory copy
cp [.b, .w, .l] source target count
- copy memory
crc32 - checksum calculation
crc32 address count [addr]
- compute CRC32 checksum [save at addr]
date - get/set/reset date & time
date
- without arguments: print date & time
date [MMDDhhmm[[CC]YY][.ss]]
- with numeric argument: set the system date & time
date reset
- with 'reset' argument: reset the RTC
dcache - enable or disable data cache
dcache [on, off]
- enable or disable data (writethrough) cache
dhcp - invoke DHCP client to obtain IP/boot params
diskboot - boot from IDE device
diskboot loadAddr dev:part (All U-Boots prior to 05-Mar-2005)
- dev = 0 for Primary Master
1 for Primary Slave
2 for Secondary Master
3 for Secondary Slave
- part = 0-FF depending on partition (in hexadecimal)
diskboot loadAddr dev:part cont (U-Boot 05-Mar-2005 and later)
- dev = 0 for Primary Master
1 for Primary Slave
2 for Secondary Master
3 for Secondary Slave
- part = 0-FF depending on partition (in hexadecimal)
- cont = 0 for On-Board VIA controller
1 for PCI Silicon Images Parallel ATA controller
2 for PCI Silicon Images Serial SATA controller
echo - echo args to console
echo [args..]
- echo args to console; \c suppresses newline
erase - erase FLASH memory
erase start end
- erase FLASH from addr 'start' to addr 'end'
erase N:SF[-SL]
- erase sectors SF-SL in FLASH bank # N
erase bank N
- erase FLASH bank # N
erase all
- erase all FLASH banks
fdcboot - boot from floppy device
fdosboot - boot from dos floppy file
fdosboot loadAddr drive
- ????????????????????????????
fdosls - list files in a directory
fdosls loadAddr drive
- ??????????????????????????????
flinfo - print FLASH memory information
flinfo
- print information for all FLASH memory banks
flinfo N
- print information for FLASH memory bank # N
go - start application at address 'addr'
go addr [arg ...]
- start application at address 'addr'
passing 'arg' as arguments
help - print online help
help
- without arguments: prints a short usage message for all commands.
help [command ...]
- show help information (for 'command')
icache - enable or disable instruction cache
icache on
- enable instruction cache
icache off
- disable instruction cache
ide - IDE sub-system
ide reset [x]
- reset IDE controller number 'x'
ide info [x]
- show available IDE devices on controller 'x'
ide device [x] [dev]
- show device information for device 'dev' on controller 'x'
ide part [x] [dev]
- print partition table of device 'dev' on controller 'x'
ide read addr blk# cnt
- read 'cnt' blocks starting at block 'blk#' from mem address 'addr'
ide write addr blk# cnt
- write 'cnt' blocks starting at block 'blk#' to mem address 'addr'
iminfo - print header information for application image
iminfo addr [addr ...]
- print header information for application image starting at
address 'addr' in memory; this includes verification of the
image contents (magic number, header and payload checksums)
loadb - load binary file over serial line (kermit mode)
loadb [off] [baud]
- load binary file over serial line with offset 'off' and baudrate
'baud'
loads - load S-Record file over serial line
loads [off]
- load S-Record file over serial line with offset 'off'
loop - infinite loop on address range
loop [.b, .w, .l] address number_of_objects
- loop on a set of addresses
md - memory display
md [.b, .w, .l] address [number_of_objects]
- memory display
menu - display BIOS setup menu
mm - memory modify (auto-incrementing)
mm [.b, .w, .l] address
- memory modify, auto increment address
mtest - simple RAM test
mtest [start [end [pattern]]]
- simple RAM read/write test
mw - memory write (fill)
mw [.b, .w, .l] address value [count]
- write memory
nm - memory modify (constant address)
nm [.b, .w, .l] address
- memory modify, read and keep address
pci - list and access PCI Configuration Space
pci [bus] [long]
- short or long list of PCI devices on bus 'bus'
pci header b.d.f
- show header of PCI device 'bus.device.function'
pci display [.b, .w, .l] b.d.f [address] [number_of_objects]
- display PCI configuration space (CFG)
pci next [.b, .w, .l] b.d.f address
- modify, read and keep CFG address
pci modify [.b, .w, .l] b.d.f address
- modify, auto increment CFG address
pci write [.b, .w, .l] b.d.f address value
- write to CFG address
post - post diagnostic test
post [diagnostic]
- do post diagnostic test, all of them or the one specified, i.e.
alltest/ethernettest/idetest/kbdirqtest/lptest/memtest/
mousetest/pcitest/rtctest/serialtest/usbtest
printenv - print environment variables
printenv
- print values of all environment variables
printenv name ...
- print value of environment variable 'name'
protect - enable or disable FLASH write protection
protect on start end
- protect FLASH from addr 'start' to addr 'end'
protect on bank_N:SF[-SL]
- protect sectors SF-SL in FLASH bank_N
protect on bank_N
- protect FLASH bank_N
protect on all
- protect all FLASH banks
protect off start end
- make FLASH from addr 'start' to addr 'end' writeable
protect off bank_N:SF[-SL]
- make sectors SF-SL writeable in FLASH bank_N
protect off bank_N
- make FLASH bank_N writeable
protect off all
- make all FLASH banks writeable
rarpboot - boot image via network using RARP/TFTP protocol
rarpboot [loadAddress] [bootfilename]
reset - Perform RESET of the CPU
run - run commands in an environment variable
run var [...]
- run the commands in the environment variable(s) 'var'
saveenv - save environment variables to persistent storage
scsiboot - boot from SCSI device
scsiboot loadAddr dev:part
scsi - SCSI sub-system
scsi reset
- reset SCSI controller
scsi info
- show available SCSI devices
scsi scan
- (re-)scan SCSI bus
scsi device [dev]
- show or set current device
scsi part [dev]
- print partition table of one or all SCSI devices
scsi read addr blk# cnt
- read 'cnt' blocks starting at block 'blk#' to memory address
'addr'
setenv - set environment variables
setenv name value ...
- set environment variable 'name' to 'value ...'
setenv name
- delete environment variable 'name'
sleep - delay execution for some time
sleep N
- delay execution for N seconds (N is _decimal_ !!!)
tftpboot - boot image via network using TFTP protocol
and env variables ipaddr and serverip
tftpboot [loadAddress] [bootfilename]
usb - USB sub-system
usb reset
- reset (rescan) USB controller
usb stop [f]
- stop USB [f]=force stop
usb tree
- show USB device tree
usb info [dev]
- show available USB devices
usb scan
- (re-)scan USB bus for storage devices
usb device [dev]
- show or set current USB storage device
usb part [dev]
- print partition table of one or all USB storage devices
usb read addr blk# cnt
- read 'cnt' blocks starting at block 'blk#' to memory address
'addr'
usbboot - boot from USB device
usbboot loadAddr dev:part
version - print monitor version
vesa - run a vesa bios call
? - alias for 'help'
One of the problems you will face, particularly with commands such as "printenv", is where more
information is displayed that can fit on the screen, so lines scroll past the top of the screen but there
is no facility to stop this or display beyond the top of the screen. The only way to capture all of the
information is to change the "stdout" environment variable from "vga" to "serial", i.e.
setenv stdout serial
saveenv
On the AmigaOne you can use a null modem cable from the serial port connected to the serial port of another computer running
a serial comms program that can display the incoming data stream. This technique can also be used to display diagnostic
information when things go wrong. At this time we are unsure how this is achieved with the Amy 05.