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-rw-r--r--meta/classes/qemuboot.bbclass14
1 files changed, 14 insertions, 0 deletions
diff --git a/meta/classes/qemuboot.bbclass b/meta/classes/qemuboot.bbclass
index 15a9e63f2b..54044c38da 100644
--- a/meta/classes/qemuboot.bbclass
+++ b/meta/classes/qemuboot.bbclass
@@ -36,6 +36,9 @@
# Note, runqemu will replace @MAC@ with a predefined mac, you can set
# a custom one, but that may cause conflicts when multiple qemus are
# running on the same host.
+# Note: If more than one interface of type -device virtio-net-device gets added,
+# QB_NETWORK_DEVICE_prepend might be used, since Qemu enumerates the eth*
+# devices in reverse order to -device arguments.
#
# QB_TAP_OPT: netowrk option for 'tap' mode, e.g.,
# "-netdev tap,id=net0,ifname=@TAP@,script=no,downscript=no"
@@ -43,6 +46,15 @@
#
# QB_SLIRP_OPT: network option for SLIRP mode, e.g., -netdev user,id=net0"
#
+# QB_CMDLINE_IP_SLIRP: If QB_NETWORK_DEVICE adds more than one network interface to qemu, usually the
+# ip= kernel comand line argument needs to be changed accordingly. Details are documented
+# in the kernel docuemntation https://www.kernel.org/doc/Documentation/filesystems/nfs/nfsroot.txt
+# Example to configure only the first interface: "ip=eth0:dhcp"
+# QB_CMDLINE_IP_TAP: This parameter is similar to the QB_CMDLINE_IP_SLIRP parameter. Since the tap interface requires
+# static IP configuration @CLIENT@ and @GATEWAY@ place holders are replaced by the IP and the gateway
+# address of the qemu guest by runqemu.
+# Example: "ip=192.168.7.@CLIENT@::192.168.7.@GATEWAY@:255.255.255.0::eth0"
+#
# QB_ROOTFS_OPT: used as rootfs, e.g.,
# "-drive id=disk0,file=@ROOTFS@,if=none,format=raw -device virtio-blk-device,drive=disk0"
# Note, runqemu will replace "@ROOTFS@" with the one which is used, such as core-image-minimal-qemuarm64.ext4.
@@ -63,6 +75,8 @@ QB_DEFAULT_KERNEL ?= "${KERNEL_IMAGETYPE}"
QB_DEFAULT_FSTYPE ?= "ext4"
QB_OPT_APPEND ?= "-show-cursor"
QB_NETWORK_DEVICE ?= "-device virtio-net-pci,netdev=net0,mac=@MAC@"
+QB_CMDLINE_IP_SLIRP ?= "ip=dhcp"
+QB_CMDLINE_IP_TAP ?= "ip=192.168.7.@CLIENT@::192.168.7.@GATEWAY@:255.255.255.0"
# This should be kept align with ROOT_VM
QB_DRIVE_TYPE ?= "/dev/sd"