U-Boot
ATCA-F140 Installation and Use (6806800M67H)
103
For more information, see the U-Boot documentation.
1. Execute the following commands to specify the IP addresses of the ATCA-F140 and the TFTP
server by entering the following commands:
setenv ipaddr <IP address of ATCA-F140>
setenv serverip <IP address of TFTP server>
2. Specify the names of the Linux kernel image and the NFS root directory.
setenv bootfile <Linux kernel image file name>
setenv rootpath <NFS root directory>
setenv blobfile <dtb file name>
3. Configure U-Boot to use NFS boot.
setenv bootcmd $nfsboot
4. Depending on your network configuration, you may have to specify a gateway IP address
and a netmask. Use the following commands:
setenv gatewayip <gateway IP>
setenv netmask <netmask>
5. Enter
saveenv
, and then enter
boot
.
5.3.2
Configuring U-Boot to Boot from RAM Disk
If the Linux kernel and root file system are available as RAM disk image, you may want to boot
from that RAM disk.
This procedure assumes that the U-Boot command
ramboot
has been defined and that the
RAM disk image is stored on an external TFTP server that is connected to the ATCA-F140.
During each boot process, the image is downloaded from the TFTP server into the main
memory of the blade. The external TFTP server must be connected using the ATCA-F140 face
plate connector "ETH5", which is the Ethernet management interface. Any other interfaces,
such as the base or fabric interfaces, are not yet functional at this stage of the boot phase, as
the corresponding drivers are not initialized yet.
1.
Specify the IP address of the ATCA-F140 and the TFTP server that contains the RAM disk:
setenv ipaddr <IP address of ATCA-F140>
setenv serverip <IP address of TFTP server>
2. Depending on your network configuration, you may have to specify a gateway IP address
and a netmask. Use the following commands:
setenv gatewayip <gateway IP>
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