Thank you Chris! Your suggestion is really working!!! Awesome!!! I find in this way if I input "^C" in stdio I'm gonna kill the qemu process. But I think it's fine to me ;-).
Did you managed to make serial communication between host (which holds QEMU client) and guest (QEMU client)? I tried to use -serial pty but realized that it is only one way traffic, e.x. as I experimented, I can send traffic from guest to host but I can't do that from host to guest. If it's not gonna work, I guess I have to use socket to make that communication. Thanks! Alex On Thu, Mar 12, 2015 at 9:33 AM, Christopher Covington <c...@codeaurora.org> wrote: > Hi Alex, > > On 03/10/2015 09:12 PM, Alex Sun wrote: > > I downloaded QEMU 2.2.0, and built a qemu-system-arm from there. > > I loaded a versatile kernel 2.6.32.5 and my own file system. > > > > #qemu-system-arm -pidfile /tmp/qemu_0_pids/0.pid -M versatilepb > -option-rom > > efi-rtl8139.rom -initrd newinitrd -kernel vmlinuz-2.6.32-5-versatile > -append > > "root=/dev/sda1 console=ttyAMA0" -hda new.qcow2 -drive file=fat:rw:./data > > -nographic -no-reboot > > > > I see following message while the kernel is booting: > > > > [ 3.873429] dev:f1: ttyAMA0 at MMIO 0x101f1000 (irq = 12) is a > AMBA/PL011 > > [ 3.884631] console [ttyAMA0] enabled > > [ 3.889783] dev:f2: ttyAMA1 at MMIO 0x101f2000 (irq = 13) is a > AMBA/PL011 > > [ 3.890646] dev:f3: ttyAMA2 at MMIO 0x101f3000 (irq = 14) is a > AMBA/PL011 > > > > I think the serial ports of ttyAMA[0-2] are enabled. > > Then I try to do serial redirection: > > > > #qemu-system-arm -pidfile /tmp/qemu_0_pids/0.pid -M versatilepb > -option-rom > > efi-rtl8139.rom -initrd newinitrd -kernel vmlinuz-2.6.32-5-versatile > -append > > "root=/dev/sda1 console=ttyAMA0" -hda new.qcow2 -drive file=fat:rw:./data > > -nographic -no-reboot *-serial stdio -serial pty* > > > > However, I get error message: > > QEMU 2.2.0 monitor - type 'help' for more information > > *(qemu) qemu-system-arm: -serial stdio: cannot use stdio by multiple > character > > devices* > > > > It's weired to me. I don't think there is another one other than qemu > itself > > holding the stdio. > > I think the conflict is that when you specify -nographic, the QEMU monitor > uses stdio. I find it necessary to add "-monitor none" to all of my > command lines. > > Regards, > Chris > > -- > Qualcomm Innovation Center, Inc. > The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, > a Linux Foundation Collaborative Project >
