[meta-intel] [Patch v4 4/6] image-ucode.bbclass: a new bbclass for initramfs images

[nitin.a.kamble at intel.com]

From: Nitin A Kamble <nitin.a.kamble at intel.com>

This provides extensions to the image_types and image-live classes to enable
the initramfs recipes with early microcode support.

Look at these bbclass files from the oecore layer for context, as this is
extending functionality available there.
  meta/classes/image_types.bbclass
  meta/classes/image_live.bbclass

Signed-off-by: Nitin A Kamble <nitin.a.kamble at intel.com>
Acked-by: Darren Hart <dvhart at linux.intel.com>
---
 classes/image-ucode.bbclass | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 classes/image-ucode.bbclass

diff --git a/classes/image-ucode.bbclass b/classes/image-ucode.bbclass
new file mode 100644
index 0000000..93ac28e
--- /dev/null
+++ b/classes/image-ucode.bbclass
@@ -0,0 +1,17 @@
+# This provides extensions to the image_types and image-live classes to enable
+# the initramfs recipes with early microcode support.
+#
+# Look at these bbclass files from the oecore layer for context, as this is
+# extending functionality available there.
+#   meta/classes/image_types.bbclass
+#   meta/classes/image_live.bbclass
+#
+
+# extentions to image_types.bbclass
+IMAGE_TYPES += "cpio.gz.ucode"
+COMPRESSIONTYPES += "gz.ucode"
+COMPRESS_CMD_gz.ucode = "${COMPRESS_CMD_gz}; cat ${EARLY_UCODE_CPIO} ${IMAGE_NAME}.rootfs.${type}.gz > ${IMAGE_NAME}.rootfs.${type}.gz.ucode"
+COMPRESS_DEPENDS_gz.ucode = "${COMPRESS_DEPENDS_gz} intel-microcode"
+
+# Extentions to image-live.bbclass
+EARLY_UCODE_CPIO ?= "${DEPLOY_DIR_IMAGE}/microcode.cpio"
-- 
1.8.1.4