kernel.bbclass: added task which check size of kernel image

Code was taken from linux.inc, variable with size is KERNEL_IMAGE_MAXSIZE


git-svn-id: https://svn.o-hand.com/repos/poky/trunk@3314 311d38ba-8fff-0310-9ca6-ca027cbcb966

1 files changed, 14 insertions, 0 deletions

diff --git a/meta/classes/kernel.bbclass b/meta/classes/kernel.bbclass
index 5976f42c71..320a2cf71a 100644
--- a/meta/classes/kernel.bbclass
+++ b/meta/classes/kernel.bbclass
@@ -415,3 +415,17 @@ python populate_packages_prepend () {
         packages.append(metapkg)
         bb.data.setVar('PACKAGES', ' '.join(packages), d)
 }
+
+# Support checking the kernel size since some kernels need to reside in partitions
+# with a fixed length or there is a limit in transferring the kernel to memory
+do_sizecheck() {
+        if [ ! -z "${KERNEL_IMAGE_MAXSIZE}" ]; then
+            size=`ls -l arch/${ARCH}/boot/${KERNEL_IMAGETYPE} | awk '{ print $5}'`
+            if [ $size -ge ${KERNEL_IMAGE_MAXSIZE} ]; then
+                    rm arch/${ARCH}/boot/${KERNEL_IMAGETYPE}
+                    die  "This kernel (size=$size > ${KERNEL_IMAGE_MAXSIZE}) is too big for your device. Please reduce the size of the kernel by making more of it modular."
+            fi
+        fi
+}
+
+addtask sizecheck before do_install after do_compile