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.

1 files changed, 0 insertions, 12 deletions

diff --git a/include/init.h b/include/init.h
index 20c3976af09..74496500d29 100644
--- a/include/init.h
+++ b/include/init.h
@@ -46,17 +46,6 @@ void board_init_f(ulong dummy);
 int arch_cpu_init(void);
 
 /**
- * arch_cpu_init_dm() - init CPU after driver model is available
- *
- * This is called immediately after driver model is available before
- * relocation. This is similar to arch_cpu_init() but is able to reference
- * devices
- *
- * Return: 0 if OK, -ve on error
- */
-int arch_cpu_init_dm(void);
-
-/**
  * mach_cpu_init() - SoC/machine dependent CPU setup
  *
  * This is called after arch_cpu_init(). It should handle any
@@ -217,7 +206,6 @@ int init_cache_f_r(void);
 int print_cpuinfo(void);
 #endif
 int timer_init(void);
-int misc_init_f(void);
 
 #if defined(CONFIG_DTB_RESELECT)
 int embedded_dtb_select(void);