3 files changed, 70 insertions, 0 deletions

diff --git a/classes/rmc-systemd-boot.bbclass b/classes/rmc-systemd-boot.bbclass
new file mode 100644
index 00000000..ad2cf106
--- /dev/null
+++ b/classes/rmc-systemd-boot.bbclass
@@ -0,0 +1,12 @@
+# rmc-systemd-boot bbclass
+# Deploy central RMC database file to ESP
+
+IMAGE_INSTALL_append = " rmc"
+
+inherit systemd-boot
+
+do_bootimg[depends] += "${MLPREFIX}rmc-db:do_deploy"
+
+efi_populate_append() {
+        install -m 0400 ${DEPLOY_DIR_IMAGE}/rmc.db ${DEST}/rmc.db
+}
diff --git a/common/recipes-bsp/rmc/rmc-db.bb b/common/recipes-bsp/rmc/rmc-db.bb
new file mode 100644
index 00000000..14553af0
--- /dev/null
+++ b/common/recipes-bsp/rmc/rmc-db.bb
@@ -0,0 +1,48 @@
+SUMMARY = "Central RMC Database"
+DESCRIPTION = "Generate a centralized RMC database for RMC feature. \
+Fingerprints and data for all boards supported are specified by variable \
+RMC_BOARD_DATA_DIRS which is a list of top directories that contains \
+subdirectories for boards. Developers can add their top directories by appending \
+them to this variable in a rmc-db.bbappend.Refer to rmc-db bbclass for more \
+information."
+
+LICENSE = "MIT"
+
+LIC_FILES_CHKSUM = "file://${COREBASE}/LICENSE;md5=4d92cd373abda3937c2bc47fbc49d690"
+
+S = "${WORKDIR}"
+
+inherit rmc-db
+
+RMC_BOARD_DATA_DIRS_append := " ${THISDIR}/boards/"
+RMC_DB_DIR = "${WORKDIR}/db"
+
+# Let sstate be aware of change in any added board directories
+do_generate_rmc_db[file-checksums] = "${@get_rmc_top_dirs_list(d)}"
+
+# derived from get_lic_checksum_file_list(d) in base.bbclass in OE
+def get_rmc_top_dirs_list(d):
+    dirlist = []
+    dirs = d.getVar("RMC_BOARD_DATA_DIRS", True) or ''
+    topdirs = dirs.split()
+    for each in topdirs:
+        dirlist.append(each + ":" + str(os.path.exists(each)))
+    return " ".join(dirlist)
+
+do_generate_rmc_db () {
+        rmc_generate_db "${RMC_BOARD_DATA_DIRS}" "${RMC_DB_DIR}"/rmc.db
+}
+
+addtask generate_rmc_db  after do_compile
+
+inherit deploy
+
+do_deploy () {
+        if [ -f ${RMC_DB_DIR}/rmc.db ]; then
+                install -m 0400 ${RMC_DB_DIR}/rmc.db ${DEPLOYDIR}
+        else
+                echo "Warning: no RMC central database found, skip deployment."
+        fi
+}
+
+addtask deploy after do_generate_rmc_db
diff --git a/conf/layer.conf b/conf/layer.conf
index d8e5000d..41e42e83 100644
--- a/conf/layer.conf
+++ b/conf/layer.conf
@@ -15,3 +15,13 @@ LICENSE_PATH += "${LAYERDIR}/common/custom-licenses"
 # This should only be incremented on significant changes that will
 # cause compatibility issues with other layers
 LAYERVERSION_intel = "3"
+
+
+# Exclude RMC patches unless RMC Feature is eanbled
+RMC_BBMASK := "${LAYERDIR}/common/recipes-bsp/systemd-boot/systemd-boot.*\.bbappend \
+               ${LAYERDIR}/common/recipes-core/initrdscripts/initramfs-live-install-efi.*\.bbappend \
+               ${LAYERDIR}/common/recipes-bsp/gnu-efi/gnu-efi.*\.bbappend"
+
+BBMASK += "${RMC_BBMASK}"
+
+BBMASK_remove = "${@bb.utils.contains('DISTRO_FEATURES', 'rmc', '${RMC_BBMASK}', '', d)}"