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, 3 insertions, 2 deletions

diff --git a/arch/x86/lib/spl.c b/arch/x86/lib/spl.c
index b18c1cd..2d50c62 100644
--- a/arch/x86/lib/spl.c
+++ b/arch/x86/lib/spl.c
@@ -17,6 +17,7 @@
 #include <syscon.h>
 #include <asm/cpu.h>
 #include <asm/cpu_common.h>
+#include <asm/fsp2/fsp_api.h>
 #include <asm/global_data.h>
 #include <asm/mrccache.h>
 #include <asm/mtrr.h>
@@ -27,7 +28,7 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-__weak int arch_cpu_init_dm(void)
+__weak int fsp_setup_pinctrl(void *ctx, struct event *event)
 {
 	return 0;
 }
@@ -89,7 +90,7 @@ static int x86_spl_init(void)
 		return ret;
 	}
 #ifndef CONFIG_TPL
-	ret = arch_cpu_init_dm();
+	ret = fsp_setup_pinctrl(NULL, NULL);
 	if (ret) {
 		debug("%s: arch_cpu_init_dm() failed\n", __func__);
 		return ret;