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-rw-r--r--meta/recipes-kernel/linux/linux.inc27
1 files changed, 27 insertions, 0 deletions
diff --git a/meta/recipes-kernel/linux/linux.inc b/meta/recipes-kernel/linux/linux.inc
index 6f4db987d..93859bb5a 100644
--- a/meta/recipes-kernel/linux/linux.inc
+++ b/meta/recipes-kernel/linux/linux.inc
@@ -15,6 +15,21 @@ CMDLINE_at91sam9263ek = "mem=64M console=ttyS0,115200 root=/dev/mmcblk0p1 rootfs
#boot from nfs
#CMDLINE_at91sam9263ek = "mem=64M console=ttyS0,115200 root=301 root=/dev/nfs nfsroot=172.20.3.1:/data/at91 ip=172.20.0.5:::255.255.0.0"
+# Support for device tree generation
+FILES_kernel_devicetree = "/boot/devicetree*"
+KERNEL_DEVICETREE_FLAGS = "-R 8 -p 0x3000"
+
+python __anonymous () {
+ import bb
+
+ devicetree = bb.data.getVar("KERNEL_DEVICETREE", d, 1) or ''
+ if devicetree:
+ depends = bb.data.getVar("DEPENDS", d, 1)
+ bb.data.setVar("DEPENDS", "%s dtc-native" % depends, d)
+ packages = bb.data.getVar("PACKAGES", d, 1)
+ bb.data.setVar("PACKAGES", "%s kernel-devicetree" % packages, d)
+}
+
do_configure_prepend() {
echo "" > ${S}/.config
@@ -89,3 +104,15 @@ do_install_prepend() {
ln -f arch/${ARCH}/kernel/vmlinux.lds arch/${ARCH}/boot/vmlinux
fi
}
+
+do_install_append() {
+ if test -n "${KERNEL_DEVICETREE}"; then
+ dtc -I dts -O dtb ${KERNEL_DEVICETREE_FLAGS} -o devicetree ${KERNEL_DEVICETREE}
+ install -m 0644 devicetree ${D}/boot/devicetree-${KERNEL_VERSION}
+ install -d ${DEPLOY_DIR_IMAGE}
+ install -m 0644 devicetree ${DEPLOY_DIR_IMAGE}/${KERNEL_IMAGE_BASE_NAME}.dtb
+ cd ${DEPLOY_DIR_IMAGE}
+ rm -f ${KERNEL_IMAGE_SYMLINK_NAME}.dtb
+ ln -sf ${KERNEL_IMAGE_BASE_NAME}.dtb ${KERNEL_IMAGE_SYMLINK_NAME}.dtb
+ fi
+}