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U-Boot
ATCA-F125 (6873M Artwork) Installation and Use (6806800J94K)
113
5.11 Updating U-Boot
This procedure describes how you can update U-Boot using the U-Boot command line
interface. It is assumed that the new U-Boot image is placed in the download directory of a
TFTP server which has network access to the ATCA-F125. All files names and IP addresses
shown below were only chosen for illustration purposes. This procedure consists of updating
the stand-by boot flash and then switching the boot flashes, so that after the next reset/boot
flash the ATCA-F125 boots from the new active, previously updated boot flash.
1. Connect to U-boot. For more information, see
Accessing U-Boot
on page 101
.
2. Specify the IP address of the ATCA-F125 and the TFTP server by entering the following
commands:
setenv ipaddr <IP address of ATCA-F125>
setenv serverip <IP address of TFTP server>
3. Depending on your network configuration, you may have to specify a gateway IP address
as well as a netmask:
setenv gatewayip <gateway IP>
setenv netmask <netmask>
It is recommended that you update the U-boot firmware using the BBS/Linux or the shelf
manager. Refer to the respective documentation for further details.
When updating the U-Boot image, the U-Boot boot parameters are not updated. They remain
as they were before the update. The boot parameters are stored separately from the U-Boot
image in a memory area within each boot flash. See also
Table "Linux Devices" on page 107
.
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.
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