kernel-initramfs: define this package to include the initramfs image for kernel boot

Signed-off-by: Lans Zhang <jia.zhang@windriver.com>

2 files changed, 132 insertions, 0 deletions

diff --git a/meta-efi-secure-boot/recipes-kernel/linux/kernel-initramfs.bbappend b/meta-efi-secure-boot/recipes-kernel/linux/kernel-initramfs.bbappend
new file mode 100644
index 0000000..b68f201
--- /dev/null
+++ b/meta-efi-secure-boot/recipes-kernel/linux/kernel-initramfs.bbappend
@@ -0,0 +1,58 @@
+inherit user-key-store deploy
+
+# Always fetch the latest initramfs image
+do_install[nostamp] = "1"
+
+fakeroot python do_sign() {
+    initramfs = None
+
+    if d.getVar('BUNDLE', True) == '0':
+        initramfs = d.expand('${D}/boot/${INITRAMFS_IMAGE}${INITRAMFS_EXT_NAME}.cpio.gz')
+    else:
+        initramfs = d.expand('${D}/boot/${KERNEL_IMAGETYPE}-initramfs${INITRAMFS_EXT_NAME}')
+
+    if initramfs == None or not os.path.exists(initramfs):
+        return
+
+    uks_sel_sign(initramfs, d)
+}
+addtask sign after do_install before do_deploy do_package
+
+do_deploy() {
+    initramfs=""
+    initramfs_dest=""
+
+    if [ "${BUNDLE}" = "0" ]; then
+        initramfs="${D}/boot/${INITRAMFS_IMAGE}${INITRAMFS_EXT_NAME}.cpio.gz"
+        initramfs_dest="${DEPLOYDIR}/${INITRAMFS_IMAGE}-${MACHINE}.cpio.gz"
+    else
+        initramfs="${D}/boot/${KERNEL_IMAGETYPE}-initramfs${INITRAMFS_EXT_NAME}"
+        initramfs_dest="${DEPLOYDIR}/${KERNEL_IMAGETYPE}-initramfs-${MACHINE}.bin"
+    fi
+
+    if [ -f "$initramfs.p7b" ]; then
+        install -d "${DEPLOYDIR}"
+
+        install -m 0644 "$initramfs.p7b" "$initramfs_dest.p7b"
+    fi
+}
+addtask deploy after do_install before do_build
+
+pkg_postinst_${PN}_append() {
+    if [ "${BUNDLE}" = "1" ] ; then
+        update-alternatives --install "/boot/${KERNEL_IMAGETYPE}.p7b" \
+            "${KERNEL_IMAGETYPE}.p7b" \
+            "/boot/${KERNEL_IMAGETYPE}-initramfs${INITRAMFS_EXT_NAME}.p7b" 50101
+    fi
+
+    true
+}
+
+pkg_prerm_${PN}_append() {
+    if [ "${BUNDLE}" = "1" ] ; then
+        update-alternatives --remove "${KERNEL_IMAGETYPE}.p7b" \
+            "${KERNEL_IMAGETYPE}-initramfs${INITRAMFS_EXT_NAME}.p7b"
+    fi
+
+    true
+}
diff --git a/meta/recipes-core/images/kernel-initramfs.bb b/meta/recipes-core/images/kernel-initramfs.bb
new file mode 100644
index 0000000..1546421
--- /dev/null
+++ b/meta/recipes-core/images/kernel-initramfs.bb
@@ -0,0 +1,74 @@
+SUMMARY = "Initramfs kernel boot"
+DESCRIPTION = "This package includes the initramfs for the kernel boot. \
+"
+LICENSE = "MIT"
+
+DEPENDS = "virtual/kernel"
+
+PROVIDES = "virtual/kernel-initramfs"
+
+ALLOW_EMPTY_${PN} = "1"
+
+S = "${STAGING_KERNEL_DIR}"
+B = "${WORKDIR}/${BPN}-${PV}"
+
+inherit linux-kernel-base kernel-arch
+
+INITRAMFS_BASE_NAME = "${KERNEL_IMAGETYPE}-initramfs-${PV}-${PR}-${MACHINE}-${DATETIME}"
+INITRAMFS_BASE_NAME[vardepsexclude] = "DATETIME"
+INITRAMFS_EXT_NAME = "-${@base_read_file('${STAGING_KERNEL_BUILDDIR}/kernel-abiversion')}"
+
+BUNDLE = "${@'1' if d.getVar('INITRAMFS_IMAGE', True) and \
+                    d.getVar('INITRAMFS_IMAGE_BUNDLE', True) == '1' \
+                 else '0'}"
+
+python() {
+    image = d.getVar('INITRAMFS_IMAGE', True)
+    if image:
+        d.appendVarFlag('do_install', 'depends', ' ${INITRAMFS_IMAGE}:do_rootfs')
+}
+
+do_unpack[depends] += "virtual/kernel:do_deploy"
+do_populate_lic[depends] += "virtual/kernel:do_deploy"
+
+do_install() {
+    [ -z "${INITRAMFS_IMAGE}" ] && exit 0
+
+    if [ "${BUNDLE}" = "0" ]; then
+        for suffix in cpio.gz cpio.lzo cpio.lzma cpio.xz; do
+            img="${DEPLOY_DIR_IMAGE}/${INITRAMFS_IMAGE}-${MACHINE}.$suffix"
+
+            if [ -s "$img" ]; then
+                install -d "${D}/boot"
+                install -m 0644 "$img" \
+                    "${D}/boot/${INITRAMFS_IMAGE}${INITRAMFS_EXT_NAME}.$suffix"
+                break
+            fi
+        done
+    else
+        if [ -e "${DEPLOY_DIR_IMAGE}/${KERNEL_IMAGETYPE}-initramfs-${MACHINE}.bin" ]; then
+            install -d "${D}/boot"
+            install -m 0644 "${DEPLOY_DIR_IMAGE}/${KERNEL_IMAGETYPE}-initramfs-${MACHINE}.bin" \
+                "${D}/boot/${KERNEL_IMAGETYPE}-initramfs${INITRAMFS_EXT_NAME}"
+        fi
+    fi
+}
+
+pkg_postinst_${PN}() {
+    if [ "${BUNDLE}" = "1" ]; then
+        update-alternatives --install "/boot/${KERNEL_IMAGETYPE}" \
+            "${KERNEL_IMAGETYPE}" "/boot/${KERNEL_IMAGETYPE}-initramfs${INITRAMFS_EXT_NAME}" \
+            50101 || true
+    fi
+}
+
+pkg_prerm_${PN}() {
+    if [ "${BUNDLE}" = "1" ]; then
+        update-alternatives --remove "${KERNEL_IMAGETYPE}" \
+            "${KERNEL_IMAGETYPE}-initramfs${INITRAMFS_EXT_NAME}" || true
+    fi
+}
+
+PACKAGE_ARCH = "${MACHINE_ARCH}"
+
+FILES_${PN} = "/boot/*"