1# 2# Copyright OpenEmbedded Contributors 3# 4# SPDX-License-Identifier: MIT 5# 6 7# Support for device tree generation 8python () { 9 if not bb.data.inherits_class('nopackages', d): 10 d.appendVar("PACKAGES", " ${KERNEL_PACKAGE_NAME}-devicetree") 11 if d.getVar('KERNEL_DEVICETREE_BUNDLE') == '1': 12 d.appendVar("PACKAGES", " ${KERNEL_PACKAGE_NAME}-image-zimage-bundle") 13} 14 15# recursivly search for devicetree files 16FILES:${KERNEL_PACKAGE_NAME}-devicetree = " \ 17 /${KERNEL_DTBDEST}/**/*.dtb \ 18 /${KERNEL_DTBDEST}/**/*.dtbo \ 19" 20 21FILES:${KERNEL_PACKAGE_NAME}-image-zimage-bundle = "/${KERNEL_IMAGEDEST}/zImage-*.dtb.bin" 22 23# Generate kernel+devicetree bundle 24KERNEL_DEVICETREE_BUNDLE ?= "0" 25 26# dtc flags passed via DTC_FLAGS env variable 27KERNEL_DTC_FLAGS ?= "" 28 29normalize_dtb () { 30 dtb="$1" 31 if echo $dtb | grep -q '/dts/'; then 32 bbwarn "$dtb contains the full path to the the dts file, but only the dtb name should be used." 33 dtb=`basename $dtb | sed 's,\.dts$,.dtb,g'` 34 fi 35 echo "$dtb" 36} 37 38get_real_dtb_path_in_kernel () { 39 dtb="$1" 40 dtb_path="${B}/arch/${ARCH}/boot/dts/$dtb" 41 if [ ! -e "$dtb_path" ]; then 42 dtb_path="${B}/arch/${ARCH}/boot/$dtb" 43 fi 44 echo "$dtb_path" 45} 46 47do_configure:append() { 48 if [ "${KERNEL_DEVICETREE_BUNDLE}" = "1" ]; then 49 if echo ${KERNEL_IMAGETYPE_FOR_MAKE} | grep -q 'zImage'; then 50 case "${ARCH}" in 51 "arm") 52 config="${B}/.config" 53 if ! grep -q 'CONFIG_ARM_APPENDED_DTB=y' $config; then 54 bbwarn 'CONFIG_ARM_APPENDED_DTB is NOT enabled in the kernel. Enabling it to allow the kernel to boot with the Device Tree appended!' 55 sed -i "/CONFIG_ARM_APPENDED_DTB[ =]/d" $config 56 echo "CONFIG_ARM_APPENDED_DTB=y" >> $config 57 echo "# CONFIG_ARM_ATAG_DTB_COMPAT is not set" >> $config 58 fi 59 ;; 60 *) 61 bberror "KERNEL_DEVICETREE_BUNDLE is not supported for ${ARCH}. Currently it is only supported for 'ARM'." 62 esac 63 else 64 bberror 'The KERNEL_DEVICETREE_BUNDLE requires the KERNEL_IMAGETYPE to contain zImage.' 65 fi 66 fi 67} 68 69do_compile:append() { 70 if [ -n "${KERNEL_DTC_FLAGS}" ]; then 71 export DTC_FLAGS="${KERNEL_DTC_FLAGS}" 72 fi 73 74 for dtbf in ${KERNEL_DEVICETREE}; do 75 dtb=`normalize_dtb "$dtbf"` 76 oe_runmake $dtb CC="${KERNEL_CC} $cc_extra " LD="${KERNEL_LD}" OBJCOPY="${KERNEL_OBJCOPY}" STRIP="${KERNEL_STRIP}" ${KERNEL_EXTRA_ARGS} 77 done 78} 79 80do_install:append() { 81 install -d ${D}/${KERNEL_DTBDEST} 82 for dtbf in ${KERNEL_DEVICETREE}; do 83 dtb=`normalize_dtb "$dtbf"` 84 dtb_path=`get_real_dtb_path_in_kernel "$dtb"` 85 if "${@'false' if oe.types.boolean(d.getVar('KERNEL_DTBVENDORED')) else 'true'}"; then 86 dtb_ext=${dtb##*.} 87 dtb_base_name=`basename $dtb .$dtb_ext` 88 dtb=$dtb_base_name.$dtb_ext 89 fi 90 install -Dm 0644 $dtb_path ${D}/${KERNEL_DTBDEST}/$dtb 91 done 92} 93 94do_deploy:append() { 95 for dtbf in ${KERNEL_DEVICETREE}; do 96 dtb=`normalize_dtb "$dtbf"` 97 dtb_ext=${dtb##*.} 98 dtb_base_name=`basename $dtb .$dtb_ext` 99 install -d $deployDir 100 if "${@'false' if oe.types.boolean(d.getVar('KERNEL_DTBVENDORED')) else 'true'}"; then 101 dtb=$dtb_base_name.$dtb_ext 102 fi 103 install -m 0644 ${D}/${KERNEL_DTBDEST}/$dtb $deployDir/$dtb_base_name.$dtb_ext 104 if [ -n "${KERNEL_DTB_NAME}" ] ; then 105 ln -sf $dtb_base_name.$dtb_ext $deployDir/$dtb_base_name-${KERNEL_DTB_NAME}.$dtb_ext 106 fi 107 if [ -n "${KERNEL_DTB_LINK_NAME}" ] ; then 108 ln -sf $dtb_base_name.$dtb_ext $deployDir/$dtb_base_name-${KERNEL_DTB_LINK_NAME}.$dtb_ext 109 fi 110 for type in ${KERNEL_IMAGETYPE_FOR_MAKE}; do 111 if [ "$type" = "zImage" ] && [ "${KERNEL_DEVICETREE_BUNDLE}" = "1" ]; then 112 cat ${D}/${KERNEL_IMAGEDEST}/$type \ 113 $deployDir/$dtb_base_name.$dtb_ext \ 114 > $deployDir/$type-$dtb_base_name.$dtb_ext${KERNEL_DTB_BIN_EXT} 115 if [ -n "${KERNEL_DTB_NAME}" ]; then 116 ln -sf $type-$dtb_base_name.$dtb_ext${KERNEL_DTB_BIN_EXT} \ 117 $deployDir/$type-$dtb_base_name-${KERNEL_DTB_NAME}.$dtb_ext${KERNEL_DTB_BIN_EXT} 118 fi 119 if [ -n "${KERNEL_DTB_LINK_NAME}" ]; then 120 ln -sf $type-$dtb_base_name.$dtb_ext${KERNEL_DTB_BIN_EXT} \ 121 $deployDir/$type-$dtb_base_name-${KERNEL_DTB_LINK_NAME}.$dtb_ext${KERNEL_DTB_BIN_EXT} 122 fi 123 if [ -e "${KERNEL_OUTPUT_DIR}/${type}.initramfs" ]; then 124 cat ${KERNEL_OUTPUT_DIR}/${type}.initramfs \ 125 $deployDir/$dtb_base_name.$dtb_ext \ 126 > $deployDir/${type}-${INITRAMFS_NAME}-$dtb_base_name.$dtb_ext${KERNEL_DTB_BIN_EXT} 127 if [ -n "${KERNEL_DTB_NAME}" ]; then 128 ln -sf ${type}-${INITRAMFS_NAME}-$dtb_base_name.$dtb_ext${KERNEL_DTB_BIN_EXT} \ 129 $deployDir/${type}-${INITRAMFS_NAME}-$dtb_base_name-${KERNEL_DTB_NAME}.$dtb_ext${KERNEL_DTB_BIN_EXT} 130 fi 131 if [ -n "${KERNEL_DTB_LINK_NAME}" ]; then 132 ln -sf ${type}-${INITRAMFS_NAME}-$dtb_base_name.$dtb_ext${KERNEL_DTB_BIN_EXT} \ 133 $deployDir/${type}-${INITRAMFS_NAME}-$dtb_base_name-${KERNEL_DTB_LINK_NAME}.$dtb_ext${KERNEL_DTB_BIN_EXT} 134 fi 135 fi 136 fi 137 done 138 done 139} 140