secure-core-image-initramfs: define the initramfs image type

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

meta/recipes-core/images/secure-core-image-initramfs.bb

@@ -0,0 +1,35 @@
+DESCRIPTION = "Small image capable of booting a device. The kernel includes \
+the Minimal RAM-based Initial Root Filesystem (initramfs), which finds the \
+first 'init' program more efficiently."
+LICENSE = "MIT"
+
+ROOTFS_BOOTSTRAP_INSTALL_append += "\
+    ${@bb.utils.contains("DISTRO_FEATURES", "tpm2", \
+                         "packagegroup-tpm2-initramfs", "", d)} \
+    ${@bb.utils.contains("DISTRO_FEATURES", "ima", \
+                         "packagegroup-ima-initramfs", "", d)} \
+    ${@bb.utils.contains("DISTRO_FEATURES", "encrypted-storage", \
+                         "packagegroup-encrypted-storage-initramfs", "", d)} \
+"
+
+PACKAGE_INSTALL = "\
+    initramfs-secure-core \
+    ${VIRTUAL-RUNTIME_base-utils} \
+    base-passwd \
+    ${ROOTFS_BOOTSTRAP_INSTALL} \
+"
+
+# Do not pollute the initrd image with rootfs features
+IMAGE_FEATURES = ""
+
+export IMAGE_BASENAME = "secure-core-image-initramfs"
+IMAGE_LINGUAS = ""
+
+IMAGE_FSTYPES = "${INITRAMFS_FSTYPES}"
+
+inherit core-image
+
+IMAGE_ROOTFS_SIZE = "8192"
+IMAGE_ROOTFS_EXTRA_SPACE = "0"
+
+BAD_RECOMMENDATIONS += "busybox-syslog"