diff --git a/poky/documentation/ref-manual/ref-variables.rst b/poky/documentation/ref-manual/ref-variables.rst
index 625a37c..2d6719d 100644
--- a/poky/documentation/ref-manual/ref-variables.rst
+++ b/poky/documentation/ref-manual/ref-variables.rst
@@ -696,7 +696,7 @@
       compiler. Consequently, the syntax follows Python's Regular
       Expression (re) syntax. The expressions are compared against the full
       paths to the files. For complete syntax information, see Python's
-      documentation at http://docs.python.org/3/library/re.html#re.
+      documentation at https://docs.python.org/3/library/re.html#regular-expression-syntax.
 
       The following example uses a complete regular expression to tell
       BitBake to ignore all recipe and recipe append files in the
@@ -2585,13 +2585,36 @@
       For guidance on how to create your own file permissions settings
       table file, examine the existing ``fs-perms.txt``.
 
+   FIT_GENERATE_KEYS
+      Decides whether to generate the keys for signing fitImage if they
+      don't already exist. The keys are created in ``UBOOT_SIGN_KEYDIR``.
+      The default value is 0.
+
    FIT_HASH_ALG
       Specifies the hash algorithm used in creating the FIT Image. For e.g. sha256.
 
+   FIT_KEY_GENRSA_ARGS
+      Arguments to openssl genrsa for generating RSA private key for signing
+      fitImage. The default value is "-F4". i.e. the public exponent 65537 to
+      use.
+
+   FIT_KEY_REQ_ARGS
+      Arguments to openssl req for generating certificate for signing fitImage.
+      The default value is "-batch -new". batch for non interactive mode
+      and new for generating new keys.
+
+   FIT_KEY_SIGN_PKCS
+      Format for public key ceritifcate used in signing fitImage.
+      The default value is "x509".
+
    FIT_SIGN_ALG
       Specifies the signature algorithm used in creating the FIT Image.
       For e.g. rsa2048.
 
+   FIT_SIGN_NUMBITS
+      Size of private key in number of bits used in fitImage. The default
+      value is "2048".
+
    FONT_EXTRA_RDEPENDS
       When inheriting the :ref:`fontcache <ref-classes-fontcache>` class,
       this variable specifies the runtime dependencies for font packages.
@@ -2902,10 +2925,46 @@
       The base name of image output files. This variable defaults to the
       recipe name (``${``\ :term:`PN`\ ``}``).
 
+   IMAGE_EFI_BOOT_FILES
+      A space-separated list of files installed into the boot partition
+      when preparing an image using the Wic tool with the
+      ``bootimg-efi`` source plugin. By default,
+      the files are
+      installed under the same name as the source files. To change the
+      installed name, separate it from the original name with a semi-colon
+      (;). Source files need to be located in
+      :term:`DEPLOY_DIR_IMAGE`. Here are two
+      examples:
+      ::
+
+         IMAGE_EFI_BOOT_FILES = "${KERNEL_IMAGETYPE};bz2"
+         IMAGE_EFI_BOOT_FILES = "${KERNEL_IMAGETYPE} microcode.cpio"
+ 
+      Alternatively, source files can be picked up using a glob pattern. In
+      this case, the destination file must have the same name as the base
+      name of the source file path. To install files into a directory
+      within the target location, pass its name after a semi-colon (;).
+      Here are two examples:
+      ::
+
+         IMAGE_EFI_BOOT_FILES = "boot/loader/*"
+         IMAGE_EFI_BOOT_FILES = "boot/loader/*;boot/"
+
+      The first example
+      installs all files from ``${DEPLOY_DIR_IMAGE}/boot/loader/``
+      into the root of the target partition. The second example installs
+      the same files into a ``boot`` directory within the target partition.
+
+      You can find information on how to use the Wic tool in the
+      ":ref:`dev-manual/dev-manual-common-tasks:creating partitioned images using wic`"
+      section of the Yocto Project Development Tasks Manual. Reference
+      material for Wic is located in the
+      ":doc:`../ref-manual/ref-kickstart`" chapter.
+
    IMAGE_BOOT_FILES
       A space-separated list of files installed into the boot partition
       when preparing an image using the Wic tool with the
-      ``bootimg-partition`` or ``bootimg-efi`` source plugin. By default,
+      ``bootimg-partition`` source plugin. By default,
       the files are
       installed under the same name as the source files. To change the
       installed name, separate it from the original name with a semi-colon
@@ -3669,7 +3728,7 @@
       The value in ``INITSCRIPT_PARAMS`` is passed through to the
       ``update-rc.d`` command. For more information on valid parameters,
       please see the ``update-rc.d`` manual page at
-      http://www.tin.org/bin/man.cgi?section=8&topic=update-rc.d.
+      https://manpages.debian.org/buster/init-system-helpers/update-rc.d.8.en.html
 
    INSANE_SKIP
       Specifies the QA checks to skip for a specific package within a