Selecting The Boot Flashes; Using The Persistent Memory Feature - SMART Embedded Computing ATCA-F140 Series Installation And Use Manual

U-Boot
2. Depending on your system configuration, you may want to specify network
parameters as follows:
setenv ipaddr <IP address>
setenv serverip <IP address>
setenv netmask <netmask>
setenv gatewayip <IP address>
3. Enter saveenv, and then enter boot.
5.4

Selecting the Boot Flashes

This configuration determines which flash the blade is to boot from on the next restart. You
can either boot through IPMI or through a U-Boot command.
 Using IPMI - This option uses the System Boot Options feature. For more
information, see the ATCA-F140: Control using IPMI Programmer's Reference.
 Using U-Boot command - Use bootsel 0|1|switch, where 0 selects boot flash
0, 1 selects boot flash 1 and switch selects the currently stand-by boot flash.
Generally, there is a fixed link between the U-Boot firmware and the kernel image in the
respective boot flash. This means that when the U-Boot in a particular flash is executed, it
subsequently boots the kernel image in the same flash.
If necessary, you can select the kernel to boot manually using the following commands:
 setenv kerneladdr e0000000 (for the kernel in the currently active boot flash)
 setenv kerneladdr e2000000 (for the kernel in the currently standby boot flash)
NOTE: Use these commands with care.
Each of the two U-Boot firmware images in the two flashes holds a separate set of
U-Boot environmental variables/boot parameters. Therefore, after switching to
another boot flash, you may need to reconfigure the boot parameters/environmental
variables of the new U-Boot image according to your needs.
5.5

Using the Persistent Memory Feature

Persistent memory means that the memory RAM is not deleted during a reset. Memory
content can be deleted by performing a power cycle or by temporarily removing the power
and then powering up the blade again. This feature is enabled by default on the
ATCA-F140.
116 ATCA-F140 Series Installation and Use (6806800M67S)
U-Boot