Add extra parameters options for poky-qemu scripts

In order to support qemu user's flexibility requirement, we add extra
parameter options, user can add extra params such as "<-m 256>"
in poky-qemu script command.

Signed-off-by: Liping ke <liping.ke@intel.com>

scripts/poky-qemu

@@ -29,11 +29,14 @@ usage() {
     echo "  Additional QEMU command-line options can be passed with:"
     echo "    nographic - disables video console"
     echo "    serial - enables a serial console on /dev/ttyS0"
+    echo "    kvm - enables kvm"
+    echo "    \"<extra-qemu-options>\" - enables extra qemu options, excluding serial and kvm"
     echo ""
     echo "Examples:"
     echo "  $MYNAME qemuarm"
     echo "  $MYNAME qemux86-64 poky-image-sato ext3"
     echo "  $MYNAME path/to/bzImage-qemux86.bin path/to/nfsrootdir/ serial"
+    echo "  $MYNAME qemux86 \"<-m 256>\""
     exit 1
 }
 
@@ -47,6 +50,7 @@ FSTYPE=""
 ROOTFS=""
 LAZY_ROOTFS=""
 SCRIPT_QEMU_OPT=""
+SCRIPT_QEMU_EXTRA_OPT=""
 SCRIPT_KERNEL_OPT=""
 
 TMPDIR=""
@@ -129,6 +133,16 @@ while [ $i -le $# ]; do
             KVM_ENABLED="yes"
             KVM_CAPABLE=`grep 'vmx\|smx' /proc/cpuinfo`
             ;;
+        \<*\>)
+            SCRIPT_QEMU_EXTRA_OPT=$arg 
+            serial_option=`expr "$SCRIPT_QEMU_EXTRA_OPT" : '.*\(-serial\)'`
+            kvm_option=`expr "$SCRIPT_QEMU_EXTRA_OPT" : '.*\(-enable-kvm\)'`
+            echo "$kvm_option"
+            if [[ ! -z "$serial_option" || ! -z "$kvm_option" ]]; then
+                echo "Error: Please use serial or kvm params instead!"
+                usage
+            fi
+            ;;
         *)
             # A directory name is an nfs rootfs
             if [ -d "$arg" ]; then

scripts/poky-qemu-internal

@@ -29,6 +29,23 @@
 #   ROOTFS - the disk image file to use
 #
 
+
+mem_size=-1
+
+#Get rid of <> and get the contents of extra qemu running params
+SCRIPT_QEMU_EXTRA_OPT=`echo $SCRIPT_QEMU_EXTRA_OPT | sed -e 's/<//' -e 's/>//'`
+#if user set qemu memory, eg: -m 256 in qemu extra params, we need to do some 
+# validation check
+mem_set=`expr "$SCRIPT_QEMU_EXTRA_OPT" : '.*\(-m[[:space:]] *[0-9]*\)'`
+if [ ! -z "$mem_set" ] ; then
+#Get memory setting size from user input
+  mem_size=`echo $mem_set | sed 's/-m[[:space:]] *//'`
+fi
+
+if [ $mem_size -gt 0 ]; then
+  QEMU_MEMORY="$mem_size"M
+fi
+
 if [ -z "$QEMU_MEMORY" ]; then
     case "$MACHINE" in
         "qemux86")
@@ -60,6 +77,7 @@ if [ "$MACHINE" = "qemuarm" ]; then
         echo "WARNING: qemuarm does not support > 128M of RAM."
         echo "*** Changing QEMU_MEMORY to default of 128M ***"
         QEMU_MEMORY="128M"
+        SCRIPT_QEMU_EXTRA_OPT=`echo $SCRIPT_QEMU_EXTRA_OPT | sed -e "s/$mem_set/-m 128/" `
     fi
 fi
 
@@ -427,8 +445,8 @@ fi
 
 echo "Running $QEMU..."
 # -no-reboot is a mandatory option - see bug #100
-echo $QEMUBIN -kernel $KERNEL $QEMUOPTIONS $SERIALOPTS -no-reboot $SCRIPT_QEMU_CMDLINE_OPT --append '"'$KERNCMDLINE $SCRIPT_KERNEL_OPT'"'
+echo $QEMUBIN -kernel $KERNEL $QEMUOPTIONS $SERIALOPTS -no-reboot $SCRIPT_QEMU_OPT $SCRIPT_QEMU_EXTRA_OPT --append '"'$KERNCMDLINE $SCRIPT_KERNEL_OPT'"'
-$QEMUBIN -kernel $KERNEL $QEMUOPTIONS $SERIALOPTS -no-reboot $SCRIPT_QEMU_OPT --append "$KERNCMDLINE $SCRIPT_KERNEL_OPT" || /bin/true
+$QEMUBIN -kernel $KERNEL $QEMUOPTIONS $SERIALOPTS -no-reboot $SCRIPT_QEMU_OPT $SCRIPT_QEMU_EXTRA_OPT --append "$KERNCMDLINE $SCRIPT_KERNEL_OPT" || /bin/true
 
 cleanup