893ecc6d2d
Add a KUnit test that confirms a DTB has been loaded, i.e. there is a root node, and that the of_have_populated_dt() API works properly. We skip the test when CONFIG_OF_EARLY_FLATREE=n because in that case we know architecture code hasn't called unflatten_(and_copy_)?device_tree() which would populate some sort of root node. Cc: Rob Herring <robh+dt@kernel.org> Cc: Frank Rowand <frowand.list@gmail.com> Reviewed-by: David Gow <davidgow@google.com> Cc: Brendan Higgins <brendan.higgins@linux.dev> Signed-off-by: Stephen Boyd <sboyd@kernel.org> Link: https://lore.kernel.org/r/20240217010557.2381548-8-sboyd@kernel.org Signed-off-by: Rob Herring <robh@kernel.org>
58 lines
1.2 KiB
C
58 lines
1.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* KUnit tests for OF APIs
|
|
*/
|
|
#include <linux/module.h>
|
|
#include <linux/of.h>
|
|
|
|
#include <kunit/test.h>
|
|
|
|
/*
|
|
* Test that the root node "/" can be found by path.
|
|
*/
|
|
static void of_dtb_root_node_found_by_path(struct kunit *test)
|
|
{
|
|
struct device_node *np;
|
|
|
|
np = of_find_node_by_path("/");
|
|
KUNIT_EXPECT_NOT_ERR_OR_NULL(test, np);
|
|
of_node_put(np);
|
|
}
|
|
|
|
/*
|
|
* Test that the 'of_root' global variable is always populated when DT code is
|
|
* enabled. Remove this test once of_root is removed from global access.
|
|
*/
|
|
static void of_dtb_root_node_populates_of_root(struct kunit *test)
|
|
{
|
|
KUNIT_EXPECT_NOT_ERR_OR_NULL(test, of_root);
|
|
}
|
|
|
|
static struct kunit_case of_dtb_test_cases[] = {
|
|
KUNIT_CASE(of_dtb_root_node_found_by_path),
|
|
KUNIT_CASE(of_dtb_root_node_populates_of_root),
|
|
{}
|
|
};
|
|
|
|
static int of_dtb_test_init(struct kunit *test)
|
|
{
|
|
if (!IS_ENABLED(CONFIG_OF_EARLY_FLATTREE))
|
|
kunit_skip(test, "requires CONFIG_OF_EARLY_FLATTREE");
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Test suite to confirm a DTB is loaded.
|
|
*/
|
|
static struct kunit_suite of_dtb_suite = {
|
|
.name = "of_dtb",
|
|
.test_cases = of_dtb_test_cases,
|
|
.init = of_dtb_test_init,
|
|
};
|
|
|
|
kunit_test_suites(
|
|
&of_dtb_suite,
|
|
);
|
|
MODULE_LICENSE("GPL");
|