diff --git a/conf/machine/qemuriscv64.conf b/conf/machine/qemuriscv64.conf
index 990f253..e22d5f0 100644
--- a/conf/machine/qemuriscv64.conf
+++ b/conf/machine/qemuriscv64.conf
@@ -17,7 +17,7 @@ KERNEL_IMAGETYPE = "vmlinux"
 
 GDBVERSION = "riscv"
 
-SERIAL_CONSOLES = "115200;ttyS0 115200;hvc0"
+SERIAL_CONSOLES = "115200;ttyS0"
 
 TCLIBC = "glibc"
 IMAGE_FSTYPES_append = " ext4"
@@ -32,10 +32,11 @@ UBOOT_MACHINE = "qemu-riscv64_defconfig"
 UBOOT_ELF = "u-boot"
 
 # qemuboot options
-QB_KERNEL_CMDLINE_APPEND = "console=hvc0,115200"
+QB_KERNEL_CMDLINE_APPEND = "console=ttyS0,115200 console=tty"
+QB_MEM = "-m 512"
 QB_MACHINE = "-machine virt"
 QB_DEFAULT_KERNEL = "bbl"
-QB_SLIRP_OPT = "-netdev user,id=net0,hostfwd=tcp::22222-:22"
+#QB_SLIRP_OPT = "-netdev user,id=net0,hostfwd=tcp::22222-:22"
 QB_OPT_APPEND = "-show-cursor -monitor null"
 QB_TAP_OPT = "-netdev tap,id=net0,ifname=@TAP@,script=no,downscript=no"
 QB_NETWORK_DEVICE = "-device virtio-net-device,netdev=net0,mac=@MAC@"