u-boot.git/test/dm/ofnode.c, branch v2023.10

fdt: Allow more general use of livetree

2023-07-14T16:54:51Z

At present livetree can only be used for the control FDT. It is useful to be able to use the ofnode API for other FDTs, e.g. those used by the upcoming configuration editor. We already have most of the support present, and tests can be marked with the UT_TESTF_OTHER_FDT flag to use another FDT as a special case. But with this change, the functionality becomes more generally available. Plumb in the require support. Signed-off-by: Simon Glass

fdt: Align the start of the livetree

2023-07-14T16:54:51Z

Ensure that the block of memory used by live tree is aligned according to the default for structures. This ensures that the root node appears at the start of the block, so it can be used with free(), rather than being 4 bytes later in some cases. This corrects a rather obscure bug in unflatten_device_tree(). Fixes: 8b50d526ea5 ("dm: Add a function to create a 'live' device tree") Signed-off-by: Simon Glass

test: create dedicated fdt node for ofnode_for_each_prop test

2023-02-10T17:50:01Z

Property count may change in /buttons node, if more button tests added, and this will break ofnode_for_each_prop. Add separate node for mentioned test. Signed-off-by: Dzmitry Sankouski Reviewed-by: Simon Glass

test: Update tests to use the skip feature

2022-10-31T15:02:44Z

Some tests currently return 0 when they want to be skipped. Update them to return -EAGAIN instead, so they are counted as skipped. A few tests are in two parts, with the latter part being skipped in certain situations. Split these into two and use the correct condition for the second part. Signed-off-by: Simon Glass

dm: core: Support copying properties with ofnode

2022-09-30T02:43:43Z

Add a function to copy properties from one node to another. Signed-off-by: Simon Glass

dm: core: Allow copying ofnode property data when writing

2022-09-30T02:43:43Z

At present ofnode_write_prop() is inconsistent between livetree and flattree, in that livetree requires the caller to ensure the property value is stable (e.g. in rodata or allocated) but flattree does not, since it makes a copy. This makes the API call a bit painful to use, since the caller must do different things depending on OF_LIVE. Add a new 'copy' argument which tells the function to make a copy if needed. Add some tests to cover this behaviour. Signed-off-by: Simon Glass

dm: core: Expand ofnode tests

2022-09-30T02:43:43Z

The current tests do not cover all functions, nor do they cover the new multi-tree functionality. Add and update the tests accordingly and update the 'future work' notes in the documentation. There is a still more testing needed for the failure cases, since at present some ofnode functions return a libfdt error code instead of converting it to an errno. Signed-off-by: Simon Glass

dm: core: Create a function to get a live tree in a test

2022-09-30T02:43:43Z

Move this logic out of the test into separate functions, so we can use it in other tests. Signed-off-by: Simon Glass

dm: core: Complete phandle implementation using the other FDT

2022-09-30T02:43:43Z

We need to be able to look up phandles in any FDT, not just the control FDT. Use the 'other' FDT to test this, with a helper function which gets this as an oftree that can then we used as needed. Add a few more tests and some comments at the top of the file, to explain what is going on. Signed-off-by: Simon Glass

dm: core: Split ofnode_path_root() into two functions

2022-09-30T02:43:43Z

This function turns out to be a little confusing since it looks up a path and also registers the tree. Split it into two, one that gets the root node and one that looks up a path, so the purpose is clear. Registering the tree will happen in a function to be added in a later patch, called oftree_from_fdt(). Signed-off-by: Simon Glass