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-rw-r--r--meta-skeleton/recipes-baremetal/baremetal-examples/baremetal-helloworld_git.bb105
1 files changed, 105 insertions, 0 deletions
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1SUMMARY = "Baremetal examples to work with the several QEMU architectures supported on OpenEmbedded"
2HOMEPAGE = "https://github.com/aehs29/baremetal-helloqemu"
3LICENSE = "MIT"
4LIC_FILES_CHKSUM = "file://LICENSE;md5=39346640a23c701e4f459e05f56f4449"
5
6SRCREV = "99f4fa4a3b266b42b52af302610b0f4f429ba5e3"
7PV = "0.1+git${SRCPV}"
8
9SRC_URI = "git://github.com/aehs29/baremetal-helloqemu.git;protocol=https;branch=master"
10
11S = "${WORKDIR}/git/"
12
13# These examples are not meant to be built when using either musl or glibc
14COMPATIBLE_HOST_libc-musl_class-target = "null"
15COMPATIBLE_HOST_libc-glibc_class-target = "null"
16
17# This will be translated automatically to the architecture and
18# machine that QEMU uses on OE, e.g. -machine virt -cpu cortex-a57
19# but the examples can also be run on other architectures/machines
20# such as vexpress-a15 by overriding the setting on the machine.conf
21COMPATIBLE_MACHINE = "qemuarmv5|qemuarm|qemuarm64"
22
23BAREMETAL_QEMUARCH ?= ""
24BAREMETAL_QEMUARCH_qemuarmv5 = "versatile"
25BAREMETAL_QEMUARCH_qemuarm = "arm"
26BAREMETAL_QEMUARCH_qemuarm64 = "aarch64"
27
28
29EXTRA_OEMAKE_append = " QEMUARCH=${BAREMETAL_QEMUARCH} V=1"
30
31do_install(){
32 install -d ${D}/${datadir}
33 install -m 755 ${B}build/hello_baremetal_${BAREMETAL_QEMUARCH}.bin ${D}/${datadir}/hello_baremetal_${MACHINE}.bin
34 install -m 755 ${B}build/hello_baremetal_${BAREMETAL_QEMUARCH}.elf ${D}/${datadir}/hello_baremetal_${MACHINE}.elf
35}
36
37# Borrowed from meta-freertos
38inherit rootfs-postcommands
39inherit deploy
40do_deploy[dirs] = "${DEPLOYDIR} ${DEPLOY_DIR_IMAGE}"
41do_rootfs[dirs] = "${DEPLOYDIR} ${DEPLOY_DIR_IMAGE}"
42DEPLOYDIR = "${IMGDEPLOYDIR}"
43IMAGE_LINK_NAME ?= "baremetal-helloworld-image-${MACHINE}"
44IMAGE_NAME_SUFFIX ?= ""
45
46do_deploy(){
47 install ${D}/${datadir}/hello_baremetal_${MACHINE}.bin ${DEPLOYDIR}/${IMAGE_LINK_NAME}.bin
48 install ${D}/${datadir}/hello_baremetal_${MACHINE}.elf ${DEPLOYDIR}/${IMAGE_LINK_NAME}.elf
49}
50
51do_image(){
52 :
53}
54
55FILES_${PN} += " \
56 ${datadir}/hello_baremetal_${MACHINE}.bin \
57 ${datadir}/hello_baremetal_${MACHINE}.elf \
58"
59
60python do_rootfs(){
61 from oe.utils import execute_pre_post_process
62 from pathlib import Path
63
64 # Write empty manifest testdate file
65 deploy_dir = d.getVar('DEPLOYDIR')
66 link_name = d.getVar('IMAGE_LINK_NAME')
67 manifest_name = d.getVar('IMAGE_MANIFEST')
68
69 Path(manifest_name).touch()
70 if os.path.exists(manifest_name) and link_name:
71 manifest_link = deploy_dir + "/" + link_name + ".manifest"
72 if os.path.lexists(manifest_link):
73 os.remove(manifest_link)
74 os.symlink(os.path.basename(manifest_name), manifest_link)
75 execute_pre_post_process(d, d.getVar('ROOTFS_POSTPROCESS_COMMAND'))
76}
77
78# QEMU generic FreeRTOS parameters
79QB_DEFAULT_KERNEL = "${IMAGE_LINK_NAME}.bin"
80QB_MEM = "-m 256"
81QB_OPT_APPEND = "-nographic"
82QB_DEFAULT_FSTYPE = "bin"
83QB_DTB = ""
84
85# This next part is necessary to trick the build system into thinking
86# its building an image recipe so it generates the qemuboot.conf
87addtask do_deploy after do_write_qemuboot_conf before do_build
88addtask do_rootfs before do_deploy after do_install
89addtask do_image after do_rootfs before do_build
90inherit qemuboot
91
92# Based on image.bbclass to make sure we build qemu
93python(){
94 # do_addto_recipe_sysroot doesnt exist for all recipes, but we need it to have
95 # /usr/bin on recipe-sysroot (qemu) populated
96 def extraimage_getdepends(task):
97 deps = ""
98 for dep in (d.getVar('EXTRA_IMAGEDEPENDS') or "").split():
99 # Make sure we only add it for qemu
100 if 'qemu' in dep:
101 deps += " %s:%s" % (dep, task)
102 return deps
103 d.appendVarFlag('do_image', 'depends', extraimage_getdepends('do_addto_recipe_sysroot'))
104 d.appendVarFlag('do_image', 'depends', extraimage_getdepends('do_populate_sysroot'))
105}