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2023-10-06dm: core: Add a way to convert a devicetree to a dtbSimon Glass
Add a way to flatten a devicetree into binary form. For livetree this involves generating the devicetree using fdt_property() and other calls. For flattree it simply involves providing the buffer containing the tree. Signed-off-by: Simon Glass <sjg@chromium.org>
2023-10-06dm: core: Add a function to create an empty treeSimon Glass
Provide a function to create a new, empty tree. Signed-off-by: Simon Glass <sjg@chromium.org>
2023-07-14fdt: Allow more general use of livetreeSimon Glass
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 <sjg@chromium.org>
2022-08-12dm: core: Introduce support for multiple treesSimon Glass
At present ofnode only works with a single device tree, for the most part. This is the control FDT used by U-Boot. When booting an OS we may obtain a different device tree and want to modify it. Add some initial support for this into the ofnode API. Note that we don't permit aliases in this other device tree, since the of_access implementation maintains a list of aliases collected at start-up. Also, we don't need aliases to do fixups in the other FDT. So make sure that flat tree and live tree processing are consistent in this area. Signed-off-by: Simon Glass <sjg@chromium.org>
2022-01-19doc: replace @return by Return:Heinrich Schuchardt
Sphinx expects Return: and not @return to indicate a return value. find . -name '*.c' -exec \ sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \; find . -name '*.h' -exec \ sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \; Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
2018-05-07SPDX: Convert all of our single license tags to Linux Kernel styleTom Rini
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
2017-06-01dm: Add a function to create a 'live' device treeSimon Glass
This function converts the flat device tree into a hierarchical one with C structures and pointers. This is easier to access. Signed-off-by: Simon Glass <sjg@chromium.org>