scripts/runqemu: Add support for 'qemumicroblaze' machine

* Add support to boot the 'qemumicroblaze' machine in
  qemu-system-microblazeel
* Use the specific machine model for a MicroBlaze system 'petalogix-ml605'
* Use the DTB generated from the kernel build as the DTB for boot
* Force use of initrd rootfs (either in ext or cpio formats)

(From OE-Core rev: 2c164a5dfc877d180ef58d46c063573621297929)

Signed-off-by: Nathan Rossi <nathan.rossi@xilinx.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 17 insertions, 1 deletions

diff --git a/scripts/runqemu b/scripts/runqemu
index 5ad83dd215..04dc3b0571 100755
--- a/scripts/runqemu
+++ b/scripts/runqemu
@@ -108,7 +108,7 @@ while true; do
     arg=${1}
     case "$arg" in
         "qemux86" | "qemux86-64" | "qemuarm" | "qemumips" | "qemumipsel" | \
-        "qemumips64" | "qemush4"  | "qemuppc" | "qemuzynq")
+        "qemumips64" | "qemush4"  | "qemuppc" | "qemumicroblaze" | "qemuzynq")
             [ -z "$MACHINE" ] && MACHINE=$arg || \
                 error "conflicting MACHINE types [$MACHINE] and [$arg]"
             ;;
@@ -309,6 +309,9 @@ QEMUSH4_DEFAULT_FSTYPE=ext3
 QEMUPPC_DEFAULT_KERNEL=vmlinux-qemuppc.bin
 QEMUPPC_DEFAULT_FSTYPE=ext3
 
+QEMUMICROBLAZE_DEFAULT_KERNEL=linux.bin.ub
+QEMUMICROBLAZE_DEFAULT_FSTYPE=cpio
+
 QEMUZYNQ_DEFAULT_KERNEL=uImage
 QEMUZYNQ_DEFAULT_FSTYPE=cpio
 
diff --git a/scripts/runqemu-internal b/scripts/runqemu-internal
index f156c4dae5..9619bec7b9 100755
--- a/scripts/runqemu-internal
+++ b/scripts/runqemu-internal
@@ -50,6 +50,9 @@ else
         "qemuarm")
             mem_size=128
             ;;
+        "qemumicroblaze")
+            mem_size=64
+            ;;
         "qemumips"|"qemumips64")
             mem_size=128
             ;;
@@ -264,6 +267,7 @@ fi
 
 case "$MACHINE" in
     "qemuarm") ;;
+    "qemumicroblaze") ;;
     "qemumips") ;;
     "qemumipsel") ;;
     "qemumips64") ;;
@@ -496,6 +500,15 @@ if [ "$MACHINE" = "akita" ]; then
     fi
 fi
 
+if [ "$MACHINE" = "qemumicroblaze" ]; then
+    QEMU=qemu-system-microblazeel
+    QEMU_SYSTEM_OPTIONS="-M petalogix-ml605 -serial mon:stdio -dtb $KERNEL-$MACHINE.dtb"
+    if [ "${FSTYPE:0:3}" = "ext" -o "${FSTYPE:0:4}" = "cpio" ]; then
+        KERNCMDLINE="earlyprintk root=/dev/ram rw"
+        QEMUOPTIONS="$QEMU_SYSTEM_OPTIONS -initrd $ROOTFS"
+    fi
+fi
+
 if [ "$MACHINE" = "qemuzynq" ]; then
     QEMU=qemu-system-arm
     QEMU_SYSTEM_OPTIONS="-M xilinx-zynq-a9 -serial null -serial mon:stdio -dtb $KERNEL-$MACHINE.dtb"