RTM-ATCA-SXXX Overview
6806800H62B ATCA‐S201InstallationandUseGuide32
Variable name Default value Description
bootfile
Uimage
This is the filename name of the Linux kernel image.
loadaddr
1000000
Specifies the starting memory address for storing the
bootfile
consoledev
ttyS1
Settings for kernel console port.
bootargs
root=/dev/ram rw
ramdisk_size=200000
console=ttyS1,9600
Command line passed to the Linux kernel. May contain
nested references, which will be resolved at runtime.
Ramdiskaddr
2000000
Specifies the starting memory address of the Linux
ramdisk.
ramdisksize
2000000
Specifies the memory size reserved for the Linux ramdisk.
initrd_high
0xfffffff
Forces ramdisk to load at a high memory address (do not
modify)
othbootargs
Used to pass Ethernet MAC and SAS address assignments
to Linux.
ramdiskfile
rootfs.ext2.gz.uboot
Specifies name of rfs (root file system) image fetched by
U-boot when booting from the tftp server (serverip).
eth0addr
00:11:0D:xx:xx:xx
MAC address of 1 GbE port on ATCA Zone-2 base-0
eth1addr
00:11:0D:xx:xx:xx
MAC address of 1 GbE port on ATCA Zone-2 base-1
eth2addr
00:11:0D:xx:xx:xx
MAC address of 1 GbE port on ATCA Zone-3 Management
port
eth3addr
00:11:0D:xx:xx:xx
MAC address of 10 GbE port on ATCA Zone-2 fabric-0
eth4addr
00:11:0D:xx:xx:xx
MAC address of 10 GbE port on ATCA Zone-2 fabric-1
sasaddr
50:00:00:11:OD:xx:xx:xx
WWN address of SAS controller, port0. Port 1 is WWN+1,
Port2 is WWN+2 and so on.
ipaddr
0.0.0.0
Dotted decimal IP address applied to active Ethernet
management port (ethact)
gatewayip
0.0.0.0
Dotted decimal Default network gateway
netmask
0.0.0.0
Dotted decimal network mask
stdin
serial
Specifies RS232 console port for input messages
stdout
serial
Specifies RS232 console port for output messages
stderr
serial
Specifies RS232 console port for error messages
serverip
0.0.0.0
Dotted decimal IP address of TFTP server
ethact
At boot, ethprime is
copied to ethact.
Ethact identifies which Ethernet resource is associated
with U-boot services. Permissible values:
eTSEC0= Zone2 connector, Base0 Ethernet (1Gbps)
eTSEC1= Zone2 connector, Base1 Ethernet (1Gbps)
eTSEC2= Zone3 connector, Management port (1Gbps)
Note: ethact may be dynamically changed at the U-boot
console, but it is not a persistent variable, and will be
reloaded at next boot.
netdev
eth2
RESERVED for future use
ethprime
eTSEC2
At boot, ethprime is copied to ethact. Refer to ethact for a
list of permissible values.
3.6.4 Manually assign management IP addresses
Administrators may individually modify any of the listed U-boot environment
variables. Note these changes are not permanently recorded in the non-volatile
flash unless saved using saveenv. Extreme care should be taken to ensure new
values are valid entries.
