From c15862ffdd5f7797338808cf7645786109bcddc3 Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Tue, 26 Sep 2023 08:14:41 -0600 Subject: dm: core: Add a way to copy a node Add a function to copy a node to another place under a new name. This is useful at least for testing, since copying a test node with existing properties is easier than writing the code to generate it all afresh. Signed-off-by: Simon Glass --- test/dm/ofnode.c | 63 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) (limited to 'test/dm') diff --git a/test/dm/ofnode.c b/test/dm/ofnode.c index 594116e..5459a9a 100644 --- a/test/dm/ofnode.c +++ b/test/dm/ofnode.c @@ -1362,3 +1362,66 @@ static int dm_test_oftree_new(struct unit_test_state *uts) return 0; } DM_TEST(dm_test_oftree_new, UT_TESTF_SCAN_FDT); + +static int check_copy_node(struct unit_test_state *uts, ofnode dst, ofnode src, + ofnode *nodep) +{ + u32 reg[2], val; + ofnode node; + + ut_assertok(ofnode_copy_node(dst, "copy-test", src, &node)); + + ut_assertok(ofnode_read_u32(node, "ping-expect", &val)); + ut_asserteq(3, val); + + ut_asserteq_str("denx,u-boot-fdt-test", + ofnode_read_string(node, "compatible")); + + /* check that a property with the same name is overwritten */ + ut_assertok(ofnode_read_u32_array(node, "reg", reg, ARRAY_SIZE(reg))); + ut_asserteq(3, reg[0]); + ut_asserteq(1, reg[1]); + + /* reset the compatible so the live tree does not change */ + ut_assertok(ofnode_write_string(node, "compatible", "nothing")); + *nodep = node; + + return 0; +} + +static int dm_test_ofnode_copy_node(struct unit_test_state *uts) +{ + ofnode src, dst, node, try; + + /* + * These nodes are chosen so that the src node is before the destination + * node in the tree. This doesn't matter with livetree, but with + * flattree any attempt to insert a property earlier in the tree will + * mess up the offsets after it. + */ + src = ofnode_path("/b-test"); + dst = ofnode_path("/some-bus"); + + ut_assertok(check_copy_node(uts, dst, src, &node)); + + /* check trying to copy over an existing node */ + ut_asserteq(-EEXIST, ofnode_copy_node(dst, "copy-test", src, &try)); + ut_asserteq(try.of_offset, node.of_offset); + + return 0; +} +DM_TEST(dm_test_ofnode_copy_node, UT_TESTF_SCAN_FDT); + +/* test ofnode_copy_node() with the 'other' tree */ +static int dm_test_ofnode_copy_node_ot(struct unit_test_state *uts) +{ + oftree otree = get_other_oftree(uts); + ofnode src, dst, node; + + src = ofnode_path("/b-test"); + dst = oftree_path(otree, "/node/subnode2"); + ut_assertok(check_copy_node(uts, dst, src, &node)); + + return 0; +} +DM_TEST(dm_test_ofnode_copy_node_ot, UT_TESTF_SCAN_FDT | UT_TESTF_OTHER_FDT); -- cgit v1.1