SUMMARY = "Baremetal examples to work with the several QEMU architectures supported on OpenEmbedded" HOMEPAGE = "https://github.com/aehs29/baremetal-helloqemu" DESCRIPTION = "These are introductory examples to showcase the use of QEMU to run baremetal applications." LICENSE = "MIT" LIC_FILES_CHKSUM = "file://LICENSE;md5=39346640a23c701e4f459e05f56f4449" SRCREV = "db2bf750eaef7fc0832e13ada8291343bbcc3afe" PV = "0.1+git" SRC_URI = "git://github.com/ahcbb6/baremetal-helloqemu.git;protocol=https;branch=master" UPSTREAM_VERSION_UNKNOWN="1" S = "${WORKDIR}/git" # The following variables should be set to accomodate each application BAREMETAL_BINNAME ?= "hello_baremetal_${MACHINE}" IMAGE_LINK_NAME ?= "baremetal-helloworld-image-${MACHINE}" IMAGE_NAME_SUFFIX ?= "" # Baremetal-Image creates the proper wiring, assumes the output is provided in # binary and ELF format, installed on ${base_libdir}/firmware/ , we want a # package to be created since we might have some way of updating the baremetal # firmware from Linux inherit baremetal-image # startup code for x86 uses NASM syntax DEPENDS:qemux86:append = " nasm-native" # These parameters are app specific for this example # This will be translated automatically to the architecture and # machine that QEMU uses on OE, e.g. -machine virt -cpu cortex-a57 # but the examples can also be run on other architectures/machines # such as vexpress-a15 by overriding the setting on the machine.conf COMPATIBLE_MACHINE = "qemuarmv5|qemuarm|qemuarm64|qemuriscv64|qemuriscv32|qemux86|qemux86-64" BAREMETAL_QEMUARCH ?= "" BAREMETAL_QEMUARCH:qemuarmv5 = "versatile" BAREMETAL_QEMUARCH:qemuarm = "arm" BAREMETAL_QEMUARCH:qemuarm64 = "aarch64" BAREMETAL_QEMUARCH:qemuriscv64 = "riscv64" BAREMETAL_QEMUARCH:qemuriscv32 = "riscv32" BAREMETAL_QEMUARCH:qemux86 = "x86" BAREMETAL_QEMUARCH:qemux86-64 = "x86-64" EXTRA_OEMAKE:append = " QEMUARCH=${BAREMETAL_QEMUARCH} V=1" # qemux86-64 uses a different Makefile do_compile:prepend:qemux86-64(){ cd x86-64 } # Install binaries on the proper location for baremetal-image to fetch and deploy do_install(){ install -d ${D}/${base_libdir}/firmware install -m 755 ${B}/build/hello_baremetal_${BAREMETAL_QEMUARCH}.bin ${D}/${base_libdir}/firmware/${BAREMETAL_BINNAME}.bin install -m 755 ${B}/build/hello_baremetal_${BAREMETAL_QEMUARCH}.elf ${D}/${base_libdir}/firmware/${BAREMETAL_BINNAME}.elf } FILES:${PN} += " \ ${base_libdir}/firmware/${BAREMETAL_BINNAME}.bin \ ${base_libdir}/firmware/${BAREMETAL_BINNAME}.elf \ " # qemux86-64 boots from iso rather than -kernel, create image to boot from do_image:append:qemux86-64(){ dd if=/dev/zero of=${B}/build/img.iso bs=1M count=10 status=none dd if=${B}/build/stage1.bin of=${B}/build/img.iso bs=512 count=1 conv=notrunc dd if=${B}/build/stage2.bin of=${B}/build/img.iso bs=512 seek=1 count=64 conv=notrunc dd if=${B}/build/hello_baremetal_x86-64.bin of=${B}/build/img.iso bs=512 seek=65 conv=notrunc install ${B}/build/img.iso ${IMGDEPLOYDIR}/${IMAGE_LINK_NAME}.iso }