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| author | Tom Rini <trini@konsulko.com> | 2022-03-10 08:24:45 -0500 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2022-03-10 08:24:45 -0500 |
| commit | 6e7de8fd3eccf3119570581569d899809508d8df (patch) | |
| tree | f9d040341823bf6267a0d65fc5c8539bbe04f555 /common/board_f.c | |
| parent | 0bf4e0bb935e5c7fc016142e0228882610ecbf39 (diff) | |
| parent | 8c187d667c897971a663e2cb21ff901a9e4b60e6 (diff) | |
| download | u-boot-next.zip u-boot-next.tar.gz u-boot-next.tar.bz2 | |
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.
Diffstat (limited to 'common/board_f.c')
| -rw-r--r-- | common/board_f.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/common/board_f.c b/common/board_f.c index a687600..5b655ad 100644 --- a/common/board_f.c +++ b/common/board_f.c @@ -19,6 +19,7 @@ #include <dm.h> #include <env.h> #include <env_internal.h> +#include <event.h> #include <fdtdec.h> #include <fs.h> #include <hang.h> @@ -802,19 +803,19 @@ __weak int reserve_arch(void) return 0; } -__weak int arch_cpu_init_dm(void) +__weak int checkcpu(void) { return 0; } -__weak int checkcpu(void) +__weak int clear_bss(void) { return 0; } -__weak int clear_bss(void) +static int misc_init_f(void) { - return 0; + return event_notify_null(EVT_MISC_INIT_F); } static const init_fnc_t init_sequence_f[] = { @@ -828,6 +829,7 @@ static const init_fnc_t init_sequence_f[] = { initf_malloc, log_init, initf_bootstage, /* uses its own timer, so does not need DM */ + event_init, #ifdef CONFIG_BLOBLIST bloblist_init, #endif @@ -841,7 +843,6 @@ static const init_fnc_t init_sequence_f[] = { arch_cpu_init, /* basic arch cpu dependent setup */ mach_cpu_init, /* SoC/machine dependent CPU setup */ initf_dm, - arch_cpu_init_dm, #if defined(CONFIG_BOARD_EARLY_INIT_F) board_early_init_f, #endif @@ -875,9 +876,7 @@ static const init_fnc_t init_sequence_f[] = { show_board_info, #endif INIT_FUNC_WATCHDOG_INIT -#if defined(CONFIG_MISC_INIT_F) misc_init_f, -#endif INIT_FUNC_WATCHDOG_RESET #if CONFIG_IS_ENABLED(SYS_I2C_LEGACY) init_func_i2c, |