blob: 6e08be4b7009e88a419f182b0439b844649f10cb [file] [log] [blame]
Brad Bishopd7bf8c12018-02-25 22:55:05 -05001# Support for device tree generation
2PACKAGES_append = " \
3 kernel-devicetree \
4 ${@['kernel-image-zimage-bundle', ''][d.getVar('KERNEL_DEVICETREE_BUNDLE') != '1']} \
5"
6FILES_kernel-devicetree = "/${KERNEL_IMAGEDEST}/*.dtb /${KERNEL_IMAGEDEST}/*.dtbo"
7FILES_kernel-image-zimage-bundle = "/${KERNEL_IMAGEDEST}/zImage-*.dtb.bin"
8
9# Generate kernel+devicetree bundle
10KERNEL_DEVICETREE_BUNDLE ?= "0"
11
12normalize_dtb () {
13 DTB="$1"
14 if echo ${DTB} | grep -q '/dts/'; then
15 bbwarn "${DTB} contains the full path to the the dts file, but only the dtb name should be used."
16 DTB=`basename ${DTB} | sed 's,\.dts$,.dtb,g'`
17 fi
18 echo "${DTB}"
19}
20
21get_real_dtb_path_in_kernel () {
22 DTB="$1"
23 DTB_PATH="${B}/arch/${ARCH}/boot/dts/${DTB}"
24 if [ ! -e "${DTB_PATH}" ]; then
25 DTB_PATH="${B}/arch/${ARCH}/boot/${DTB}"
26 fi
27 echo "${DTB_PATH}"
28}
29
30do_configure_append() {
31 if [ "${KERNEL_DEVICETREE_BUNDLE}" = "1" ]; then
32 if echo ${KERNEL_IMAGETYPE_FOR_MAKE} | grep -q 'zImage'; then
33 case "${ARCH}" in
34 "arm")
35 config="${B}/.config"
36 if ! grep -q 'CONFIG_ARM_APPENDED_DTB=y' $config; then
37 bbwarn 'CONFIG_ARM_APPENDED_DTB is NOT enabled in the kernel. Enabling it to allow the kernel to boot with the Device Tree appended!'
38 sed -i "/CONFIG_ARM_APPENDED_DTB[ =]/d" $config
39 echo "CONFIG_ARM_APPENDED_DTB=y" >> $config
40 echo "# CONFIG_ARM_ATAG_DTB_COMPAT is not set" >> $config
41 fi
42 ;;
43 *)
44 bberror "KERNEL_DEVICETREE_BUNDLE is not supported for ${ARCH}. Currently it is only supported for 'ARM'."
45 esac
46 else
47 bberror 'The KERNEL_DEVICETREE_BUNDLE requires the KERNEL_IMAGETYPE to contain zImage.'
48 fi
49 fi
50}
51
52do_compile_append() {
53 for DTB in ${KERNEL_DEVICETREE}; do
54 DTB=`normalize_dtb "${DTB}"`
55 oe_runmake ${DTB}
56 done
57}
58
59do_install_append() {
60 for DTB in ${KERNEL_DEVICETREE}; do
61 DTB=`normalize_dtb "${DTB}"`
62 DTB_EXT=${DTB##*.}
63 DTB_PATH=`get_real_dtb_path_in_kernel "${DTB}"`
64 DTB_BASE_NAME=`basename ${DTB} ."${DTB_EXT}"`
65 install -m 0644 ${DTB_PATH} ${D}/${KERNEL_IMAGEDEST}/${DTB_BASE_NAME}.${DTB_EXT}
66 for type in ${KERNEL_IMAGETYPE_FOR_MAKE}; do
67 symlink_name=${type}"-"${KERNEL_IMAGE_SYMLINK_NAME}
68 DTB_SYMLINK_NAME=`echo ${symlink_name} | sed "s/${MACHINE}/${DTB_BASE_NAME}/g"`
69 ln -sf ${DTB_BASE_NAME}.${DTB_EXT} ${D}/${KERNEL_IMAGEDEST}/devicetree-${DTB_SYMLINK_NAME}.${DTB_EXT}
70
71 if [ "$type" = "zImage" ] && [ "${KERNEL_DEVICETREE_BUNDLE}" = "1" ]; then
72 cat ${D}/${KERNEL_IMAGEDEST}/$type \
73 ${D}/${KERNEL_IMAGEDEST}/${DTB_BASE_NAME}.${DTB_EXT} \
74 > ${D}/${KERNEL_IMAGEDEST}/$type-${DTB_BASE_NAME}.${DTB_EXT}.bin
75 fi
76 done
77 done
78}
79
80do_deploy_append() {
81 for DTB in ${KERNEL_DEVICETREE}; do
82 DTB=`normalize_dtb "${DTB}"`
83 DTB_EXT=${DTB##*.}
84 DTB_BASE_NAME=`basename ${DTB} ."${DTB_EXT}"`
85 for type in ${KERNEL_IMAGETYPE_FOR_MAKE}; do
86 base_name=${type}"-"${KERNEL_IMAGE_BASE_NAME}
87 symlink_name=${type}"-"${KERNEL_IMAGE_SYMLINK_NAME}
88 DTB_NAME=`echo ${base_name} | sed "s/${MACHINE}/${DTB_BASE_NAME}/g"`
89 DTB_SYMLINK_NAME=`echo ${symlink_name} | sed "s/${MACHINE}/${DTB_BASE_NAME}/g"`
90 DTB_PATH=`get_real_dtb_path_in_kernel "${DTB}"`
91 install -d ${DEPLOYDIR}
92 install -m 0644 ${DTB_PATH} ${DEPLOYDIR}/${DTB_NAME}.${DTB_EXT}
93 ln -sf ${DTB_NAME}.${DTB_EXT} ${DEPLOYDIR}/${DTB_SYMLINK_NAME}.${DTB_EXT}
94 ln -sf ${DTB_NAME}.${DTB_EXT} ${DEPLOYDIR}/${DTB_BASE_NAME}.${DTB_EXT}
95
96 if [ "$type" = "zImage" ] && [ "${KERNEL_DEVICETREE_BUNDLE}" = "1" ]; then
97 cat ${DEPLOYDIR}/$type \
98 ${DEPLOYDIR}/${DTB_NAME}.${DTB_EXT} \
99 > ${DEPLOYDIR}/${DTB_NAME}.${DTB_EXT}.bin
100 ln -sf ${DTB_NAME}.${DTB_EXT}.bin ${DEPLOYDIR}/$type-${DTB_BASE_NAME}.${DTB_EXT}.bin
101
102 if [ -e "${KERNEL_OUTPUT_DIR}/${type}.initramfs" ]; then
103 cat ${KERNEL_OUTPUT_DIR}/${type}.initramfs \
104 ${DEPLOYDIR}/${DTB_NAME}.${DTB_EXT} \
105 > ${DEPLOYDIR}/${type}-${INITRAMFS_BASE_NAME}-${DTB_BASE_NAME}.${DTB_EXT}.bin
106 ln -sf ${type}-${INITRAMFS_BASE_NAME}-${DTB_BASE_NAME}.${DTB_EXT}.bin \
107 ${DEPLOYDIR}/${type}-initramfs-${DTB_BASE_NAME}.${DTB_EXT}-${MACHINE}.bin
108 fi
109 fi
110 done
111 done
112}