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[Qemu-discuss] Input to serial device

From: Xin Tong
Subject: [Qemu-discuss] Input to serial device
Date: Sun, 2 Nov 2014 13:08:02 -0600

sent this question to the QEMU developer mailing list, but feel QEMU user ML is more appropriate.

I am emulating a UART serial device with QEMU. the guest OS can print to the serial port without a problem. but how can i write to the UART serial port. I tried to use the -serial pty backend and did not work. 

address@hidden:$ echo 1 > /dev/pts/21 does not raise an interrupt in the emulated processor. I modified the emulator to print all raised interrupts.

The OS i am working on is rather small and have no network capabilities. so serial UART is my option for now.


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