On 9/27/07, Mark Carlson <[EMAIL PROTECTED]> wrote: > > On 9/27/07, Robert Lewko <[EMAIL PROTECTED]> wrote: > > I am having second thoughts about running the 7260 from a SDcard. You > get > > everything that I wanted by running it from a NFS root. My original > > motivation for running the card off a SDcard was that if I had my laptop > on > > someone else's network then I would constantly be reconfiguring the > board to > > adjust the new network. I am, right now learning how to run DHCP from > my > > laptop to issue addresses on an network address on an obscure network > > address ( 172.28.1.0/255.255.0.0) with two network addresses bound to my > > ethernet NIC. With that I will be able to plug into anyone's hub and be > > able to have the 7260 NFS mount my laptop. > > > > There are two reasons not to run the board from the SD card. First, by > > choosing the SD card option is mutually exclusive with the XDIO, which > is > > really useful in embedded work. Secondly, the to run get the board to > boot > > from the SD card you have to modify the boot ROM, which eliminates the > > RedBoot system. With RedBoot gone you have to do the same things you > have > > to modify an initrd that gets installed to the SD card. > > Interesting, so you can't configure redboot to boot off of the SD card > like you can with the CF on the 7200? The CF card is pretty simple, I > think there are just three lines you have to do in redboot to make it > work. I guess the SD card must be more complicated. > > Thanks for mentioning that, I'll look into it tonight.
I am working in Lethbridge today so I won't be at the meeting. What happens is that one of the steps to boot from the SD card is to modify the boot ROM with the tsboot-update program that modifies the boot ROM to boot boot the initrd from the SD card instead of running the RedBoot monitor. That disables the RedBoot - instead you first get to a shell in the initrd on the SD card. What I have done is to configure a 1G SD card that my 7260 boots from. The image has a complete development system on it. It will compile code, but I am missing all the development tools like my editor, the ddd debugger, etc. It would be better to have the laptop to do the development work on then when its mostly debugged, cross complie and run on the 7260.
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