[PATCH v3 1/3] add initramfs to sstate-cache

[Felix Moessbauer <felix.moessbauer@siemens.com>]

This patch changes how we deploy the initramfs.
Instead of manually deploying, we use the sstate infrastructure for
that. By that, accidental overrides of the artifact can be
automatically detected. On clean, the artifact is also cleaned.

Signed-off-by: Felix Moessbauer <felix.moessbauer@siemens.com>
---
 meta/classes/initramfs.bbclass | 18 +++++++++++++-----
 1 file changed, 13 insertions(+), 5 deletions(-)

diff --git a/meta/classes/initramfs.bbclass b/meta/classes/initramfs.bbclass
index a5141a53..183d1933 100644
--- a/meta/classes/initramfs.bbclass
+++ b/meta/classes/initramfs.bbclass
@@ -2,16 +2,19 @@
 
 # Make workdir and stamps machine-specific without changing common PN target
 WORKDIR = "${TMPDIR}/work/${DISTRO}-${DISTRO_ARCH}/${PN}-${MACHINE}/${PV}-${PR}"
+DEPLOYDIR = "${WORKDIR}/deploy"
 STAMP = "${STAMPS_DIR}/${DISTRO}-${DISTRO_ARCH}/${PN}-${MACHINE}/${PV}-${PR}"
 STAMPCLEAN = "${STAMPS_DIR}/${DISTRO}-${DISTRO_ARCH}/${PN}-${MACHINE}/*-*"
 
 # Sstate also needs to be machine-specific
 SSTATE_MANIFESTS = "${TMPDIR}/sstate-control/${MACHINE}-${DISTRO}-${DISTRO_ARCH}"
+SSTATETASKS += "do_generate_initramfs"
 
 INITRAMFS_INSTALL ?= ""
 INITRAMFS_PREINSTALL ?= ""
 INITRAMFS_ROOTFS ?= "${WORKDIR}/rootfs"
-INITRAMFS_IMAGE_FILE = "${DEPLOY_DIR_IMAGE}/${INITRAMFS_FULLNAME}.initrd.img"
+INITRAMFS_IMAGE_NAME = "${INITRAMFS_FULLNAME}.initrd.img"
+INITRAMFS_IMAGE_FILE = "${DEPLOY_DIR_IMAGE}/${INITRAMFS_IMAGE_NAME}"
 
 # Install proper kernel
 INITRAMFS_INSTALL += "${@ ("linux-image-" + d.getVar("KERNEL_NAME", True)) if d.getVar("KERNEL_NAME", True) else ""}"
@@ -27,8 +30,10 @@ ROOTFS_PACKAGES = "initramfs-tools ${INITRAMFS_PREINSTALL} ${INITRAMFS_INSTALL}"
 
 inherit rootfs
 
-do_generate_initramfs[dirs] = "${DEPLOY_DIR_IMAGE}"
 do_generate_initramfs[network] = "${TASK_USE_SUDO}"
+do_generate_initramfs[cleandirs] += "${DEPLOYDIR}"
+do_generate_initramfs[sstate-inputdirs] = "${DEPLOYDIR}"
+do_generate_initramfs[sstate-outputdirs] = "${DEPLOY_DIR_IMAGE}"
 do_generate_initramfs() {
     rootfs_do_mounts
     rootfs_do_qemu
@@ -44,8 +49,11 @@ do_generate_initramfs() {
     if [ ! -e "${INITRAMFS_ROOTFS}/initrd.img" ]; then
         die "No initramfs was found after generation!"
     fi
-
-    rm -rf "${INITRAMFS_IMAGE_FILE}"
-    cp "${INITRAMFS_ROOTFS}/initrd.img" "${INITRAMFS_IMAGE_FILE}"
+    cp ${INITRAMFS_ROOTFS}/initrd.img ${DEPLOYDIR}/${INITRAMFS_IMAGE_NAME}
 }
 addtask generate_initramfs after do_rootfs before do_build
+
+python do_generate_initramfs_setscene () {
+    sstate_setscene(d)
+}
+addtask do_generate_initramfs_setscene
-- 
2.34.1