[PATCH v4 8/8] Add exemplary kernel module

[Jan Kiszka <jan.kiszka@siemens.com>]

From: Jan Kiszka <jan.kiszka@siemens.com>

This demonstrates the usage of the new module.inc via a primitive
hello world module.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
---
 meta-isar/conf/local.conf.sample                      |  2 +-
 .../recipes-kernel/example-module/example-module.bb   | 12 ++++++++++++
 .../recipes-kernel/example-module/files/src/Makefile  | 18 ++++++++++++++++++
 .../example-module/files/src/example-module.c         | 19 +++++++++++++++++++
 4 files changed, 50 insertions(+), 1 deletion(-)
 create mode 100644 meta-isar/recipes-kernel/example-module/example-module.bb
 create mode 100644 meta-isar/recipes-kernel/example-module/files/src/Makefile
 create mode 100644 meta-isar/recipes-kernel/example-module/files/src/example-module.c

diff --git a/meta-isar/conf/local.conf.sample b/meta-isar/conf/local.conf.sample
index 2ae43e7..92dea46 100644
--- a/meta-isar/conf/local.conf.sample
+++ b/meta-isar/conf/local.conf.sample
@@ -153,7 +153,7 @@ CONF_VERSION = "1"
 
 #
 # The default list of extra packages to be installed.
-IMAGE_INSTALL = "example-hello example-raw"
+IMAGE_INSTALL = "example-hello example-raw example-module"
 
 #
 # Default parallel jobs for bitbake:
diff --git a/meta-isar/recipes-kernel/example-module/example-module.bb b/meta-isar/recipes-kernel/example-module/example-module.bb
new file mode 100644
index 0000000..c7042cf
--- /dev/null
+++ b/meta-isar/recipes-kernel/example-module/example-module.bb
@@ -0,0 +1,12 @@
+# Example recipe for building a custom module
+#
+# This software is a part of ISAR.
+# Copyright (c) Siemens AG, 2018
+#
+# SPDX-License-Identifier: MIT
+
+include recipes-kernel/linux-module/module.inc
+
+SRC_URI += "file://src"
+
+S = "src"
diff --git a/meta-isar/recipes-kernel/example-module/files/src/Makefile b/meta-isar/recipes-kernel/example-module/files/src/Makefile
new file mode 100644
index 0000000..1625b28
--- /dev/null
+++ b/meta-isar/recipes-kernel/example-module/files/src/Makefile
@@ -0,0 +1,18 @@
+# Example module
+#
+# This software is a part of ISAR.
+# Copyright (c) Siemens AG, 2018
+#
+# SPDX-License-Identifier: GPL-2.0
+
+obj-m := example-module.o
+
+INSTALL_MOD_PATH ?= $(DESTDIR)
+export INSTALL_MOD_PATH
+
+modules modules_install clean:
+	$(MAKE) -C $(KDIR) M=$(PWD) $@
+
+install: modules_install
+
+.PHONY: modules modules_install install clean
diff --git a/meta-isar/recipes-kernel/example-module/files/src/example-module.c b/meta-isar/recipes-kernel/example-module/files/src/example-module.c
new file mode 100644
index 0000000..07cb214
--- /dev/null
+++ b/meta-isar/recipes-kernel/example-module/files/src/example-module.c
@@ -0,0 +1,19 @@
+/*
+ * Example modules
+ *
+ * Copyright (c) Siemens AG, 2018
+ *
+ * SPDX-License-Identifier: GPL-2.0
+ */
+
+#include <linux/module.h>
+
+static int __init example_module_init(void)
+{
+	printk("Just an example\n");
+	return -ENOANO;
+}
+
+module_init(example_module_init);
+
+MODULE_LICENSE("GPL");
-- 
2.13.6