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* This is similar to the symlinks provided for the kernel image in the /boot directory of a file system. The goal is to have simply named symlinks in /boot that mirror the device tree name in the kernel sources. This is so that programs like U-Boot can easily find the default device tree binary in the /boot directory and use that when booting the kernel. * Use update-alternatives to handle proper creation and removal of the symlinks. (From OE-Core rev: f972ec9522ade7dc35c535a65b04c9f31663f9aa) Signed-off-by: Chase Maupin <Chase.Maupin@ti.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
68 lines
2.7 KiB
PHP
68 lines
2.7 KiB
PHP
# Support for device tree generation
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FILES_kernel-devicetree = "/boot/devicetree*"
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KERNEL_DEVICETREE_FLAGS = "-R 8 -p 0x3000"
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python __anonymous () {
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devicetree = d.getVar("KERNEL_DEVICETREE", True) or ''
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if devicetree:
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depends = d.getVar("DEPENDS", True)
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d.setVar("DEPENDS", "%s dtc-native" % depends)
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packages = d.getVar("PACKAGES", True)
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d.setVar("PACKAGES", "%s kernel-devicetree" % packages)
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}
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do_install_append() {
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if test -n "${KERNEL_DEVICETREE}"; then
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for DTS_FILE in ${KERNEL_DEVICETREE}; do
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if [ ! -f ${DTS_FILE} ]; then
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echo "Warning: ${DTS_FILE} is not available!"
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continue
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fi
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DTS_BASE_NAME=`basename ${DTS_FILE} | awk -F "." '{print $1}'`
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DTB_NAME=`echo ${KERNEL_IMAGE_BASE_NAME} | sed "s/${MACHINE}/${DTS_BASE_NAME}/g"`
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DTB_SYMLINK_NAME=`echo ${KERNEL_IMAGE_SYMLINK_NAME} | sed "s/${MACHINE}/${DTS_BASE_NAME}/g"`
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dtc -I dts -O dtb ${KERNEL_DEVICETREE_FLAGS} -o ${DTS_BASE_NAME} ${DTS_FILE}
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install -m 0644 ${DTS_BASE_NAME} ${D}/boot/devicetree-${DTB_SYMLINK_NAME}.dtb
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done
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fi
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}
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do_deploy_append() {
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if test -n "${KERNEL_DEVICETREE}"; then
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for DTS_FILE in ${KERNEL_DEVICETREE}; do
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if [ ! -f ${DTS_FILE} ]; then
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echo "Warning: ${DTS_FILE} is not available!"
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continue
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fi
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DTS_BASE_NAME=`basename ${DTS_FILE} | awk -F "." '{print $1}'`
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DTB_NAME=`echo ${KERNEL_IMAGE_BASE_NAME} | sed "s/${MACHINE}/${DTS_BASE_NAME}/g"`
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DTB_SYMLINK_NAME=`echo ${KERNEL_IMAGE_SYMLINK_NAME} | sed "s/${MACHINE}/${DTS_BASE_NAME}/g"`
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install -d ${DEPLOYDIR}
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install -m 0644 ${B}/${DTS_BASE_NAME} ${DEPLOYDIR}/${DTB_NAME}.dtb
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cd ${DEPLOYDIR}
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ln -sf ${DTB_NAME}.dtb ${DTB_SYMLINK_NAME}.dtb
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cd -
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done
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fi
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}
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pkg_postinst_kernel-devicetree () {
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cd /${KERNEL_IMAGEDEST}
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for DTS_FILE in ${KERNEL_DEVICETREE}
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do
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DTS_BASE_NAME=`basename ${DTS_FILE} | awk -F "." '{print $1}'`
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DTB_SYMLINK_NAME=`echo ${KERNEL_IMAGE_SYMLINK_NAME} | sed "s/${MACHINE}/${DTS_BASE_NAME}/g"`
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update-alternatives --install /${KERNEL_IMAGEDEST}/${DTS_BASE_NAME}.dtb ${DTS_BASE_NAME}.dtb devicetree-${DTB_SYMLINK_NAME}.dtb ${KERNEL_PRIORITY} || true
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done
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}
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pkg_postrm_kernel-devicetree () {
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cd /${KERNEL_IMAGEDEST}
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for DTS_FILE in ${KERNEL_DEVICETREE}
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do
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DTS_BASE_NAME=`basename ${DTS_FILE} | awk -F "." '{print $1}'`
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DTB_SYMLINK_NAME=`echo ${KERNEL_IMAGE_SYMLINK_NAME} | sed "s/${MACHINE}/${DTS_BASE_NAME}/g"`
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update-alternatives --remove ${DTS_BASE_NAME}.dtb devicetree-${DTB_SYMLINK_NAME}.dtb ${KERNEL_PRIORITY} || true
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done
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}
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