diff options
| -rw-r--r-- | common/event.c | 3 | ||||
| -rw-r--r-- | include/event.h | 18 | ||||
| -rw-r--r-- | lib/of_live.c | 11 |
3 files changed, 32 insertions, 0 deletions
diff --git a/common/event.c b/common/event.c index dda569d4478..8d7513eb10b 100644 --- a/common/event.c +++ b/common/event.c @@ -48,6 +48,9 @@ const char *const type_name[] = { /* main loop events */ "main_loop", + + /* livetree has been built */ + "of_live_init", }; _Static_assert(ARRAY_SIZE(type_name) == EVT_COUNT, "event type_name size"); diff --git a/include/event.h b/include/event.h index 75141a192a4..1d267f1d105 100644 --- a/include/event.h +++ b/include/event.h @@ -154,6 +154,15 @@ enum event_t { EVT_MAIN_LOOP, /** + * @EVT_OF_LIVE_BUILT: + * This event is triggered immediately after the live device tree has been + * built. This allows for machine specific fixups to be done to the live tree + * (like disabling known-unsupported devices) before it is used. This + * event is only available if OF_LIVE is enabled and is only used after relocation. + */ + EVT_OF_LIVE_BUILT, + + /** * @EVT_COUNT: * This constants holds the maximum event number + 1 and is used when * looping over all event classes. @@ -203,6 +212,15 @@ union event_data { oftree tree; struct bootm_headers *images; } ft_fixup; + + /** + * struct event_of_live_built - livetree has been built + * + * @root: The root node of the live device tree + */ + struct event_of_live_built { + struct device_node *root; + } of_live_built; }; /** diff --git a/lib/of_live.c b/lib/of_live.c index 90b9459ede3..c1620616513 100644 --- a/lib/of_live.c +++ b/lib/of_live.c @@ -11,6 +11,7 @@ #define LOG_CATEGORY LOGC_DT #include <abuf.h> +#include <event.h> #include <log.h> #include <linux/libfdt.h> #include <of_live.h> @@ -321,6 +322,7 @@ int unflatten_device_tree(const void *blob, struct device_node **mynodes) int of_live_build(const void *fdt_blob, struct device_node **rootp) { int ret; + union event_data evt; debug("%s: start\n", __func__); ret = unflatten_device_tree(fdt_blob, rootp); @@ -335,6 +337,15 @@ int of_live_build(const void *fdt_blob, struct device_node **rootp) } debug("%s: stop\n", __func__); + if (CONFIG_IS_ENABLED(EVENT)) { + evt.of_live_built.root = *rootp; + ret = event_notify(EVT_OF_LIVE_BUILT, &evt, sizeof(evt)); + if (ret) { + log_debug("Failed to notify livetree build event: err=%d\n", ret); + return ret; + } + } + return ret; } |