Merge branch '2022-03-09-events-subsystem' into nextnext

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.

1 files changed, 0 insertions, 1 deletions

diff --git a/configs/xilinx_zynqmp_mini_nand_defconfig b/configs/xilinx_zynqmp_mini_nand_defconfig
index 400cd75..57131f6 100644
--- a/configs/xilinx_zynqmp_mini_nand_defconfig
+++ b/configs/xilinx_zynqmp_mini_nand_defconfig
@@ -16,7 +16,6 @@ CONFIG_FIT=y
 CONFIG_SUPPORT_RAW_INITRD=y
 # CONFIG_AUTOBOOT is not set
 # CONFIG_DISPLAY_CPUINFO is not set
-CONFIG_BOARD_EARLY_INIT_F=y
 CONFIG_BOARD_EARLY_INIT_R=y
 # CONFIG_BOARD_LATE_INIT is not set
 # CONFIG_CMDLINE_EDITING is not set