U-Boot Utility; Installation; Initialization; Commands - GE C2K Hardware Reference Manual

2.6 U-Boot Utility

The C2K includes a universal boot loader (U-Boot) utility that is pre-installed in flash ROM.
U-Boot is designed to work with any operating system including Linux and VxWorks
forms the following functions:
• Load the O/S kernel from Ethernet, user flash area, or USB
• Program the user flash
• Program the boot flash (self update)
• Load the O/S kernel from user flash
• Set the Real-Time Clock
• Save boot parameters in EEPROM
• Configure the MV64460 Memory Controller

2.6.1 Installation

The C2K is shipped with U-Boot pre-installed in flash memory.

2.6.2 Initialization

The C2K has been initialized during production and testing.

2.6.3 Commands

The following is a summary of commands the U-Boot utility uses for the C2K:
? alias for 'help'
runs script from memory
autoscr
prints or sets address offset
base
bdinfo prints Board Info structure
boot
boots default, e.g., run '
bootd
boots default, e.g., run '
boots from an ELF image in memory
bootelf
bootm boots application image from memory
boots image from the network using BootP/TFTP protocol
bootp
bootvx boots VxWorks from an ELF image
compares memory
cmp
coninfo prints console devices and information
copies memory
cp
crc32 calculates checksum
gets / sets / resets date and time
date
echo echoes arguments to console
erases flash memory
erase
flinfo prints flash memory information
2-7
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bootcmd
'
bootcmd
'
Installation
®
and per-
C2K User's Guide