On Wed, 20 Jul 2022 at 13:14, Chan Kim <c...@etri.re.kr> wrote: > > Hi, Peter Maydell, > > Thank you for the advice. > So I uncommented the stdio_in_use guard, and used this option > (because the second uart will be used) > > -chardev null,mux=off,id=char0 -serial chardev:char0 -chardev > stdio,mux=off,id=char1 -serial chardev:char1 > > And it gives me : > qemu-system-aarch64: cannot use stdio by multiple character devices
That isn't a full QEMU command line. Either something else on your command line is also using 'stdio', or you've passed an option that implicitly says "use stdio" (maybe -nographic ?), or you have code in your device model that's hardwiring use of the stdio chardev. -- PMM
