Hello,
As part of a UEFI project on the BeagleBoard, I am trying to read serial
data from a device that is connected to the board's GPIO pins (pin 7 for
TX and 8 for RX). When the operating system is loaded, I have no problem
detecting the device and reading data from it.
However, in the UEFI environment the device does not seem to be
detected. A call to BootServices->LocateHandle() using the
Serial_IO_PROTOCOL returns only the handle for the board's RS-232 port,
with no handle returned for the GPIO serial device.
I assume that I will have to do some modification in the BeagleBoardPkg
build configuration, and possibly the EmbeddedPkg/SerialDxe driver to
add support for this, but I am not sure where to look. If someone could
point me to where I should start, I would really appreciate it.
Thanks,
Alex
Alex Hutcheson | SAIC
Email: [email protected]
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