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Diffstat (limited to 'poky/meta/classes/baremetal-image.bbclass')
-rw-r--r-- | poky/meta/classes/baremetal-image.bbclass | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/poky/meta/classes/baremetal-image.bbclass b/poky/meta/classes/baremetal-image.bbclass new file mode 100644 index 000000000..90d58f261 --- /dev/null +++ b/poky/meta/classes/baremetal-image.bbclass @@ -0,0 +1,99 @@ +# 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')) +} |