->
-> help
? - alias for 'help'
-autoscr - run script from memory
base - print or set address offset
bdinfo - print Board Info structure
boot - boot default, i.e., run 'bootcmd'
flinfo - print FLASH memory information
go - start application at address 'addr'
help - print online help
+i2c - I2C sub-system
icache - enable or disable instruction cache
-icrc32 - checksum calculation
-iloop - infinite loop on address range
-imd - i2c memory display
iminfo - print header information for application image
imls - list all images found in flash
-imm - i2c memory modify (auto-incrementing)
-imw - memory write (fill)
-inm - memory modify (constant address)
-iprobe - probe to discover valid I2C chip addresses
itest - return true/false on integer compare
loadb - load binary file over serial line (kermit mode)
loads - load S-Record file over serial line
saveenv - save environment variables to persistent storage
setenv - set environment variables
sleep - delay execution for some time
+source - run script from memory
tftpboot- boot image via network using TFTP protocol
version - print monitor version
-> tftp 0x40800000 uImage