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- # Baremetal image class
- #
- # This class is meant to be inherited by recipes for baremetal/RTOS applications
- # It contains code that would be used by all of them, every recipe just needs to
- # override certain variables.
- #
- # For scalability purposes, code within this class focuses on the "image" wiring
- # to satisfy the OpenEmbedded image creation and testing infrastructure.
- #
- # See meta-skeleton for a working example.
- # Toolchain should be baremetal or newlib based.
- # TCLIBC="baremetal" or TCLIBC="newlib"
- COMPATIBLE_HOST_libc-musl_class-target = "null"
- COMPATIBLE_HOST_libc-glibc_class-target = "null"
- inherit rootfs-postcommands
- # Set some defaults, but these should be overriden by each recipe if required
- IMGDEPLOYDIR ?= "${WORKDIR}/deploy-${PN}-image-complete"
- BAREMETAL_BINNAME ?= "hello_baremetal_${MACHINE}"
- IMAGE_LINK_NAME ?= "baremetal-helloworld-image-${MACHINE}"
- IMAGE_NAME_SUFFIX ?= ""
- do_rootfs[dirs] = "${IMGDEPLOYDIR} ${DEPLOY_DIR_IMAGE}"
- do_image(){
- install ${D}/${base_libdir}/firmware/${BAREMETAL_BINNAME}.bin ${IMGDEPLOYDIR}/${IMAGE_LINK_NAME}.bin
- install ${D}/${base_libdir}/firmware/${BAREMETAL_BINNAME}.elf ${IMGDEPLOYDIR}/${IMAGE_LINK_NAME}.elf
- }
- do_image_complete(){
- :
- }
- python do_rootfs(){
- from oe.utils import execute_pre_post_process
- from pathlib import Path
- # Write empty manifest file to satisfy test infrastructure
- deploy_dir = d.getVar('IMGDEPLOYDIR')
- link_name = d.getVar('IMAGE_LINK_NAME')
- manifest_name = d.getVar('IMAGE_MANIFEST')
- Path(manifest_name).touch()
- if os.path.exists(manifest_name) and link_name:
- manifest_link = deploy_dir + "/" + link_name + ".manifest"
- if os.path.lexists(manifest_link):
- os.remove(manifest_link)
- os.symlink(os.path.basename(manifest_name), manifest_link)
- execute_pre_post_process(d, d.getVar('ROOTFS_POSTPROCESS_COMMAND'))
- }
- # Assure binaries, manifest and qemubootconf are populated on DEPLOY_DIR_IMAGE
- do_image_complete[dirs] = "${TOPDIR}"
- do_image_complete[umask] = "022"
- SSTATETASKS += "do_image_complete"
- SSTATE_SKIP_CREATION_task-image-complete = '1'
- do_image_complete[sstate-inputdirs] = "${IMGDEPLOYDIR}"
- do_image_complete[sstate-outputdirs] = "${DEPLOY_DIR_IMAGE}"
- do_image_complete[stamp-extra-info] = "${MACHINE_ARCH}"
- addtask do_image_complete after do_image before do_build
- python do_image_complete_setscene () {
- sstate_setscene(d)
- }
- addtask do_image_complete_setscene
- # QEMU generic Baremetal/RTOS parameters
- QB_DEFAULT_KERNEL ?= "${IMAGE_LINK_NAME}.bin"
- QB_MEM ?= "-m 256"
- QB_DEFAULT_FSTYPE ?= "bin"
- QB_DTB ?= ""
- QB_OPT_APPEND = "-nographic"
- # This next part is necessary to trick the build system into thinking
- # its building an image recipe so it generates the qemuboot.conf
- addtask do_rootfs before do_image after do_install
- addtask do_image after do_rootfs before do_image_complete
- addtask do_image_complete after do_image before do_build
- inherit qemuboot
- # Based on image.bbclass to make sure we build qemu
- python(){
- # do_addto_recipe_sysroot doesnt exist for all recipes, but we need it to have
- # /usr/bin on recipe-sysroot (qemu) populated
- def extraimage_getdepends(task):
- deps = ""
- for dep in (d.getVar('EXTRA_IMAGEDEPENDS') or "").split():
- # Make sure we only add it for qemu
- if 'qemu' in dep:
- deps += " %s:%s" % (dep, task)
- return deps
- d.appendVarFlag('do_image', 'depends', extraimage_getdepends('do_addto_recipe_sysroot'))
- d.appendVarFlag('do_image', 'depends', extraimage_getdepends('do_populate_sysroot'))
- }
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