[OE-core] [OE-Core][RFC 1/2] qemuarm64: fix hvc0 error and cleanup

[Jon Mason]

The following error is being frequently posted
INIT: Id "hvc0" respawning too fast: disabled for 5 minutes

Remove the references to hvc0 to work around this error.  Also, add some
comments to describe what is going on.

Signed-off-by: Jon Mason <jdmason at kudzu.us>
---
 meta/conf/machine/qemuarm64.conf | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/meta/conf/machine/qemuarm64.conf b/meta/conf/machine/qemuarm64.conf
index ee19385eaf..8d4a482fec 100644
--- a/meta/conf/machine/qemuarm64.conf
+++ b/meta/conf/machine/qemuarm64.conf
@@ -7,20 +7,23 @@ require conf/machine/include/qemu.inc
 
 KERNEL_IMAGETYPE = "Image"
 
-SERIAL_CONSOLES ?= "38400;ttyAMA0 38400;hvc0"
+SERIAL_CONSOLES ?= "115200;ttyAMA0 115200;tty1"
 
 # For runqemu
 QB_SYSTEM_NAME = "qemu-system-aarch64"
 QB_MEM = "-m 512"
 QB_MACHINE = "-machine virt"
 QB_CPU = "-cpu cortex-a57"
-QB_KERNEL_CMDLINE_APPEND = "console=ttyAMA0,38400"
-# Add the 'virtio-rng-pci' device otherwise the guest may run out of entropy
+# We need both ttyAMA0 and tty1 to allow for this to work in the stdio mode or the normal mode
+QB_KERNEL_CMDLINE_APPEND = "console=ttyAMA0 console=tty1"
 QB_OPT_APPEND = "-show-cursor -monitor null"
 # Add the 'virtio-rng-pci' device otherwise the guest may run out of entropy
 QB_OPT_APPEND += "-object rng-random,filename=/dev/urandom,id=rng0 -device virtio-rng-pci,rng=rng0"
+# Virtio Networking support
 QB_TAP_OPT = "-netdev tap,id=net0,ifname=@TAP@,script=no,downscript=no"
 QB_NETWORK_DEVICE = "-device virtio-net-device,netdev=net0,mac=@MAC@"
+# Virtio block device
 QB_ROOTFS_OPT = "-drive id=disk0,file=@ROOTFS@,if=none,format=raw -device virtio-blk-device,drive=disk0"
-QB_SERIAL_OPT = "-device virtio-serial-device -chardev null,id=virtcon -device virtconsole,chardev=virtcon"
-QB_TCPSERIAL_OPT = " -device virtio-serial-device -chardev socket,id=virtcon,port=@PORT@,host=127.0.0.1 -device virtconsole,chardev=virtcon"
+# Virtio serial console
+QB_SERIAL_OPT = "-device virtio-serial-device -chardev vc,id=virtcon -device virtconsole,chardev=virtcon"
+QB_TCPSERIAL_OPT = "-device virtio-serial-device -chardev socket,id=virtcon,port=@PORT@,host=127.0.0.1 -device virtconsole,chardev=virtcon"
-- 
2.17.2