I have a device based on the TI chip TNETC4401 (cable modem).
It has 125MHz MIPS CPU, 8MB RAM, 4MB Flash and 32kB ROM.
ROM program can boot the device from Flash, RAM or E2PROM through i2c interface.
Changing firmware through the official way through TFTP can easily brick the
device since this can only be done through the existing firmware and writing
bad firmware will brick it.
It seems like in order to try OpenWRT multiple times with possible failures
only e2prom through i2c will work.
But how do I do this? Is booting from e2prom through i2c a standard protocol?
I obviously need e2prom and programmer hardware.
What else do I need?
Any relevant HOWTO anywhere?
Maybe this has been done with OpenWRT for some other device?
Jerry
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