Thanks for your input.
I tried booting with init=/bin/ash.static and with a
simple "hello world type app". None of them gave me
any output to the serial terminal. I also have console
defined as a boot param :
xxx console=ttyS0 xxx
I tried modifying my /etc/inittab as per Scott's
suggestion, but that also didn't give me any output.
my inittab was :
# Run gettys in standard runlevels
One further thing I tried was adding a printk( "a" );
in the serial interrupt handler, whenever I hit the
return key, it prints out the "a". So I know the
serial link still works and is at the correct baud
I can use gdb on the board to step through the code
and was thinking that if I knew the path of how the
a, receives a key from the serial terminal
b, processes the key
c, echoes it back to the serial trminal
I may be able to trace the problem. Does anyone know
roughly what functions to set breakpoints in to trace
program flow as shown above ?
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