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FreeBSD's DTS contained only one PL050 node and driver considered it to be PS/2 keyboard. In reality PL050 is a PS/2 port that pushes bytes to/from the periphers connected to it. New DTS contains two nodes and QEMU emulates keyboard connected to port #0 and mouse connected to port #1. Since there is no way to say what's connected to port by checking DTS we hardcode this knowledge in the driver: it assumes keyboard on port #0 and ignores port #1 altogether. Also QEMU defaults emulated keyboard to scan code set 2 while driver used to work with scan code set 1 so when initializing driver make sure keyboard is switched to scan code set 1