In development, it's a bit of a pain that installing a new u-boot image
with different settings for bootargs and bootcmd doesn't actually change
anything, because the environment in flash is still valid.
Worse, there doesn't seem to be a command to say "over-write that with
your new defaults"
If
Our hardware has a watchdog which has a maximum period of 1 second.
Once I've got Linux up and going I can handle that.
I'd love to have a watchdog so that if Linux doesn't take over, the board
will reset and try again.
Is there any experience/example of u-boot driving a short-period watchdog
th
Our AVR32 board has a GSM modem attached..
I'd like to send an SMS at power-on, though if we successfully boot Linux
it will do more sophisticated stuff.
If we get the SMS, then nothing further we know the boot failed.
Is there an example anywhere of u-boot talking to a device on a serial
port
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