245 lines
7.6 KiB
Plaintext
245 lines
7.6 KiB
Plaintext
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inherit kernel-arch
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inherit kernel-uboot-extension
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python __anonymous () {
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kerneltype = d.getVar('KERNEL_IMAGETYPE', True)
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recoverykerneldevicetree = d.getVar('RECOVERY_KERNEL_DEVICETREE', True)
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if kerneltype == 'fitImage' and recoverykerneldevicetree != '' :
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depends = d.getVar("DEPENDS", True)
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depends = "%s u-boot-mkimage-native lz4-native dtc-native" % depends
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d.setVar("DEPENDS", depends)
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}
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do_image_complete[postfuncs] += "do_assemble_recovery_ramdisk_fitimage"
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#
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# Emit the fitImage ITS header
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#
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fit_recovery_ramdisk_image_emit_fit_header() {
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cat << EOF >> fit-recovery-ramdisk-image.its
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/dts-v1/;
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/ {
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description = "U-Boot fitImage for ${DISTRO_NAME}/${PV}/${MACHINE}";
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#address-cells = <1>;
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EOF
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}
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#
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# Emit the fitImage section bits
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#
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# $1 ... Section bit type: imagestart - image section start
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# confstart - configuration section start
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# sectend - section end
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# fitend - fitimage end
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#
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fit_recovery_ramdisk_image_emit_section_maint() {
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case $1 in
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imagestart)
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cat << EOF >> fit-recovery-ramdisk-image.its
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images {
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EOF
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;;
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confstart)
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cat << EOF >> fit-recovery-ramdisk-image.its
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configurations {
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EOF
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;;
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sectend)
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cat << EOF >> fit-recovery-ramdisk-image.its
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};
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EOF
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;;
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fitend)
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cat << EOF >> fit-recovery-ramdisk-image.its
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};
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EOF
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;;
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esac
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}
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#
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# Emit the fitImage ITS kernel section
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#
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# $1 ... Image counter
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# $2 ... Path to kernel image
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# $3 ... Compression type
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fit_recovery_ramdisk_image_emit_section_kernel() {
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kernel_csum="sha256"
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cat << EOF >> fit-recovery-ramdisk-image.its
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kernel@${1} {
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description = "Linux kernel";
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data = /incbin/("${2}");
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type = "kernel";
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arch = "${ARCH}";
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os = "linux";
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compression = "${3}";
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load = <${UBOOT_LOADADDRESS}>;
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entry = <${UBOOT_ENTRYPOINT}>;
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hash@1 {
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algo = "${kernel_csum}";
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};
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};
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EOF
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}
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#
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# Emit the fitImage ITS recovery ramdisk section
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#
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# $1 ... Image counter
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# $2 ... Path to ramdifk image
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fitimage_emit_section_recovery_ramdisk() {
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ramdisk_csum="sha256"
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cat << EOF >> fit-recovery-ramdisk-image.its
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ramdisk@${1} {
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description = "Ramdisk Image";
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data = /incbin/("${2}");
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type = "ramdisk";
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arch = "${ARCH}";
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os = "linux";
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compression = "none";
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load = <${RECOVERY_RAMDISK_LOADADDRESS}>;
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entry = <${RECOVERY_RAMDISK_LOADADDRESS}>;
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hash@1 {
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algo = "${ramdisk_csum}";
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};
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};
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EOF
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}
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#
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# Emit the fitImage ITS DTB section
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#
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# $1 ... Image counter
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# $2 ... Path to DTB image
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fit_recovery_ramdisk_image_emit_section_dtb() {
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dtb_csum="sha256"
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cat << EOF >> fit-recovery-ramdisk-image.its
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fdt@${1} {
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description = "Flattened Device Tree blob";
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data = /incbin/("${2}");
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type = "flat_dt";
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arch = "${ARCH}";
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compression = "none";
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load = <${DTB_LOADADDRESS}>;
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hash@1 {
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algo = "${dtb_csum}";
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};
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};
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EOF
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}
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#
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# Emit the fitImage ITS configuration section
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#
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# $1 ... Linux kernel ID
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# $2 ... DTB image ID
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# $3 ... Ramdisk ID
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fit_recovery_ramdisk_image_emit_section_config() {
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conf_csum="sha256,rsa2048"
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conf_key_name="dev"
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# Test if we have any DTBs at all
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if [ -z "${2}" ] ; then
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conf_desc="Boot Linux kernel"
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fdt_line=""
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else
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conf_desc="Boot Linux kernel with FDT blob"
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fdt_line="fdt = \"fdt@${2}\";"
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fi
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kernel_line="kernel = \"kernel@${1}\";"
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# Test if we have ramdisk image
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if [ -z "${3}" ] ; then
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ramdisk_line=""
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else
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ramdisk_line="ramdisk = \"ramdisk@${3}\";"
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fi
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cat << EOF >> fit-recovery-ramdisk-image.its
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default = "conf@1";
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conf@1 {
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description = "${conf_desc}";
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${kernel_line}
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${ramdisk_line}
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${fdt_line}
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signature@1 {
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algo = "${conf_csum}";
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key-name-hint="${conf_key_name}";
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sign-images="fdt","kernel";
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};
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};
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EOF
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}
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do_assemble_recovery_ramdisk_fitimage() {
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cd ${B}
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if test "x${KERNEL_IMAGETYPE}" = "xfitImage" && test -n "${RECOVERY_KERNEL_DEVICETREE}"; then
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kernelcount=1
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dtbcount=1
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ramdiskcount=1
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rm -f fit-recovery-ramdisk-image.its
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fit_recovery_ramdisk_image_emit_fit_header
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#
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# Step 1: Prepare a kernel image section.
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#
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fit_recovery_ramdisk_image_emit_section_maint imagestart
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fit_recovery_ramdisk_image_emit_section_kernel ${kernelcount} ${DEPLOY_DIR_IMAGE}/${KERNEL_IMAGETYPE}-linux.bin-${MACHINE}.bin ${KERNEL_COMPRESS}
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# Step 1.5: Prepare a ramdisk image section.
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#
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fitimage_emit_section_recovery_ramdisk ${ramdiskcount} ${IMGDEPLOYDIR}/${IMAGE_BASENAME}-${MACHINE}.${IMAGE_FSTYPES}
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#
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# Step 2: Prepare a DTB image section
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#
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if test -n "${RECOVERY_KERNEL_DEVICETREE}"; then
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fit_recovery_ramdisk_image_emit_section_dtb ${dtbcount} ${DEPLOY_DIR_IMAGE}/${RECOVERY_KERNEL_DEVICETREE}
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fi
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fit_recovery_ramdisk_image_emit_section_maint sectend
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#
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# Step 3: Prepare a configurations section
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#
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fit_recovery_ramdisk_image_emit_section_maint confstart
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fit_recovery_ramdisk_image_emit_section_config ${kernelcount} ${dtbcount} ${ramdiskcount}
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fit_recovery_ramdisk_image_emit_section_maint sectend
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fit_recovery_ramdisk_image_emit_section_maint fitend
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#
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# Step 4: Assemble the image
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#
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uboot-mkimage -f fit-recovery-ramdisk-image.its recovery.ramdisk.img
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if [ "${SECURE_BOOT_ENABLE}" = "yes" ]; then
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mkdir -p ./mykeys
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cp ${MTK_KEY_DIR}/${VERIFIED_KEY}.crt ./mykeys/dev.crt
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cp ${MTK_KEY_DIR}/${VERIFIED_KEY}.pem ./mykeys/dev.key
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uboot-mkimage -D "-I dts -O dtb -p 1024" -k ./mykeys -f fit-recovery-ramdisk-image.its -r recovery.ramdisk.img
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fi
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#
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# Step 5: Install the recovery.ramdisk.img and recovery fit to DEPLOY_DIR_IMAGE folder
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#
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install -d ${DEPLOY_DIR_IMAGE}
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install -m 0644 fit-recovery-ramdisk-image.its recovery.ramdisk.img -t ${DEPLOY_DIR_IMAGE}
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fi
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}
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