kernel: introduce python3-dtschema-wrapper

The 5.16 kernel introduced mandatory schema checking on any dtb file
built through the kernel.

That funcionality is provided via python3-dt-schema.

The dependencies to enable that functionality is not small, and may
not always be desired (in particular on architectures that do not
support dtbs, or in development cycles). It may also be useful for
allowing a non-conformant dts to be compiled.

This commit introduces a set of wrapper scripts that when added
as a depenency to the kernel, can pass both the validation testing
and validation steps of a dts.

(From OE-Core rev: cc9d4a69e6c6aa99ff58232b37a607ee3ac48a67)

Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

Backported from oe-core commit 2566563ad49d.
Signed-off-by: Paul Barker <paul.barker@sancloud.com>
Signed-off-by: Anuj Mittal <anuj.mittal@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

5 files changed, 78 insertions, 0 deletions

diff --git a/meta/conf/distro/include/maintainers.inc b/meta/conf/distro/include/maintainers.inc
index b3b7711a0c..2b54d2d12f 100644
--- a/meta/conf/distro/include/maintainers.inc
+++ b/meta/conf/distro/include/maintainers.inc
@@ -592,6 +592,7 @@ RECIPE_MAINTAINER:pn-python3-cython = "Oleksandr Kravchuk <open.source@oleksandr
 RECIPE_MAINTAINER:pn-python3-dbus = "Zang Ruochen <zangrc.fnst@fujitsu.com>"
 RECIPE_MAINTAINER:pn-python3-dbusmock = "Oleksandr Kravchuk <open.source@oleksandr-kravchuk.com>"
 RECIPE_MAINTAINER:pn-python3-docutils = "Oleksandr Kravchuk <open.source@oleksandr-kravchuk.com>"
+RECIPE_MAINTAINER:pn-python3-dtschema-wrapper = "Bruce Ashfield <bruce.ashfield@gmail.com>"
 RECIPE_MAINTAINER:pn-python3-pycryptodome = "Joshua Watt <JPEWhacker@gmail.com>"
 RECIPE_MAINTAINER:pn-python3-pycryptodomex = "Joshua Watt <JPEWhacker@gmail.com>"
 RECIPE_MAINTAINER:pn-python3-extras = "Oleksandr Kravchuk <open.source@oleksandr-kravchuk.com>"
diff --git a/meta/recipes-kernel/dtc/python3-dtschema-wrapper/dt-doc-validate b/meta/recipes-kernel/dtc/python3-dtschema-wrapper/dt-doc-validate
new file mode 100644
index 0000000000..2aa57851c7
--- /dev/null
+++ b/meta/recipes-kernel/dtc/python3-dtschema-wrapper/dt-doc-validate
@@ -0,0 +1,20 @@
+#!/bin/sh
+# dt-doc-validate wrapper to allow kernel dt-validation to pass
+#
+# Copyright (C) 2021 Bruce Ashfield <bruce.ashfield@gmail.com>
+# License: MIT (see COPYING.MIT at the root of the repository for terms)
+
+for arg; do
+    case "$arg" in
+        --version)
+            echo "v2021.10"
+            ;;
+    esac
+done
+
+# TBD: left for future consideration
+# exec dt-doc-validate.real "$@"
+
+# we always succeed
+exit 0
+
diff --git a/meta/recipes-kernel/dtc/python3-dtschema-wrapper/dt-mk-schema b/meta/recipes-kernel/dtc/python3-dtschema-wrapper/dt-mk-schema
new file mode 100644
index 0000000000..24b89d8619
--- /dev/null
+++ b/meta/recipes-kernel/dtc/python3-dtschema-wrapper/dt-mk-schema
@@ -0,0 +1,20 @@
+#!/bin/sh
+# dt-mk-schema wrapper to allow kernel dt-validation to pass
+#
+# Copyright (C) 2021 Bruce Ashfield <bruce.ashfield@gmail.com>
+# License: MIT (see COPYING.MIT at the root of the repository for terms)
+
+for arg; do
+    case "$arg" in
+        --version)
+            echo "v2021.10"
+            ;;
+    esac
+done
+
+# TBD: left for future consideration
+# exec dt-mk-schema.real "$@"
+
+# we always succeed
+exit 0
+
diff --git a/meta/recipes-kernel/dtc/python3-dtschema-wrapper/dt-validate b/meta/recipes-kernel/dtc/python3-dtschema-wrapper/dt-validate
new file mode 100644
index 0000000000..8a4710a7ed
--- /dev/null
+++ b/meta/recipes-kernel/dtc/python3-dtschema-wrapper/dt-validate
@@ -0,0 +1,20 @@
+#!/bin/sh
+# dt-validate wrapper to allow kernel dt-validation to pass
+#
+# Copyright (C) 2021 Bruce Ashfield <bruce.ashfield@gmail.com>
+# License: MIT (see COPYING.MIT at the root of the repository for terms)
+
+for arg; do
+    case "$arg" in
+        --version)
+            echo "v2021.10"
+            ;;
+    esac
+done
+
+# TBD: left for future consideration
+# exec dt-validate.real "$@"
+
+# we always succeed
+exit 0
+
diff --git a/meta/recipes-kernel/dtc/python3-dtschema-wrapper_2021.10.bb b/meta/recipes-kernel/dtc/python3-dtschema-wrapper_2021.10.bb
new file mode 100644
index 0000000000..c869274d09
--- /dev/null
+++ b/meta/recipes-kernel/dtc/python3-dtschema-wrapper_2021.10.bb
@@ -0,0 +1,17 @@
+DESCRIPTION = "Wrapper for tooling for devicetree validation using YAML and jsonschema"
+HOMEPAGE = "https://yoctoproject.org"
+LICENSE = "MIT"
+LIC_FILES_CHKSUM = "file://${COREBASE}/meta/COPYING.MIT;md5=3da9cfbcb788c80a0384361b4de20420"
+
+SRC_URI = "file://dt-doc-validate \
+           file://dt-mk-schema \
+           file://dt-validate"
+
+do_install() {
+    install -d ${D}${bindir}/
+    install -m 755 ${WORKDIR}/dt-doc-validate ${D}${bindir}/
+    install -m 755 ${WORKDIR}/dt-mk-schema ${D}${bindir}/
+    install -m 755 ${WORKDIR}/dt-validate ${D}${bindir}/
+}
+
+BBCLASSEXTEND = "native nativesdk"