Kontron AM4140 U-Boot Bootloader - Manual (Page 45)

AM4140 U-Boot Bootloader U-Boot Usage
ID 1052-0281, Rev. 1.0 Page 45
P R E L I M I N A R Y
6.8 Getting Help
U-Boot was configured with support for longhelp. This means that online help is available for
every command while working with the system. To access the online help, enter “?” or “help” at
the console prompt. This will show an overview over all available commands. To get specific
help, enter “? <command/command group” or “help <command/command group”.
For example to get help on the “saves” command enter “? saves”.
To get help on the mmc command group enter “? mmc”.
=> ? saves
saves - save S-Record file over serial line
Usage:
saves [ off ] [size] [ baud ]
- save S-Record file over serial line with offset 'off', size
'size' and
baudrate 'baud'
=>
=> ? mmc
mmc - MMC sub system
Usage:
mmc read <device num> addr blk# cnt
mmc write <device num> addr blk# cnt
mmc rescan <device num>
mmc part <device num> - lists available partition on mmc
mmc list - lists available devices
=>