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author | Tom Rini <trini@konsulko.com> | 2022-03-10 08:28:40 -0500 |
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committer | Tom Rini <trini@konsulko.com> | 2022-03-10 08:28:40 -0500 |
commit | cb83a7a0c360d58a3a9bf2ba3828e576eafecb91 (patch) | |
tree | 23eeff85c6606bece47b2d99611786a3392416dc /configs/stm32h743-eval_defconfig | |
parent | 0bf4e0bb935e5c7fc016142e0228882610ecbf39 (diff) | |
parent | abe5d1184f276a0789365316061a14834dbc8dc4 (diff) |
Merge branch '2022-03-09-events-subsystem' into next
To quote the author:
It is a common need in U-Boot to have one subsystem notify another
when something happens. An example is reading a partition table when a
new block device is set up.
It is also common to add weak functions and 'hook' functions to modify
how U-Boot works. See for example ft_board_setup() and the like.
U-Boot would benefit from a generic mechanism to handle these cases,
with the ability to hook into various 'events' in a
subsystem-independent and transparent way.
This series provides a way to create and dispatch events, with a way of
registering a 'spy' which watches for events of different types. This
allows 'hook' functions to be created in a generic way.
It also includes a script to list the hooks in an image, which is a bit
easier to debug than weak functions, as well as an 'event' command to
do the same from within U-Boot.
These 'static' events can be used to replace hooks like misc_init_f(),
for example. Also included is basic support for 'dynamic' events, where
a spy can be registered at runtime. The need for this is still being
figured out.
Diffstat (limited to 'configs/stm32h743-eval_defconfig')
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