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author | Tom Rini <trini@konsulko.com> | 2022-03-10 08:24:45 -0500 |
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committer | Tom Rini <trini@konsulko.com> | 2022-03-10 08:24:45 -0500 |
commit | 6e7de8fd3eccf3119570581569d899809508d8df (patch) | |
tree | f9d040341823bf6267a0d65fc5c8539bbe04f555 /cmd | |
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 'cmd')
-rw-r--r-- | cmd/Kconfig | 17 | ||||
-rw-r--r-- | cmd/Makefile | 1 | ||||
-rw-r--r-- | cmd/event.c | 27 |
3 files changed, 45 insertions, 0 deletions
diff --git a/cmd/Kconfig b/cmd/Kconfig index d10deed..d2aa06a 100644 --- a/cmd/Kconfig +++ b/cmd/Kconfig @@ -1638,6 +1638,15 @@ config CMD_NFS help Boot image via network using NFS protocol. +config NFS_TIMEOUT + int "Timeout in milliseconds for NFS mounts" + depends on CMD_NFS + default 2000 + help + Timeout in milliseconds used in NFS protocol. If you encounter + "ERROR: Cannot umount" in nfs command, try longer timeout such as + 10000. + config CMD_MII bool "mii" imply CMD_MDIO @@ -2367,6 +2376,14 @@ config CMD_DIAG available tests and running either all the tests, or specific tests identified by name. +config CMD_EVENT + bool "event - Show information about events" + default y if EVENT_DEBUG + help + This enables the 'event' command which provides information about + events and event-handler routines. This can help to device event + hadling. + config CMD_IRQ bool "irq - Show information about interrupts" depends on !ARM && !MIPS && !RISCV && !SH diff --git a/cmd/Makefile b/cmd/Makefile index 166c652..0d2b2ee 100644 --- a/cmd/Makefile +++ b/cmd/Makefile @@ -53,6 +53,7 @@ obj-$(CONFIG_CMD_DIAG) += diag.o endif obj-$(CONFIG_CMD_ADTIMG) += adtimg.o obj-$(CONFIG_CMD_ABOOTIMG) += abootimg.o +obj-$(CONFIG_CMD_EVENT) += event.o obj-$(CONFIG_CMD_EXTENSION) += extension_board.o obj-$(CONFIG_CMD_ECHO) += echo.o obj-$(CONFIG_ENV_IS_IN_EEPROM) += eeprom.o diff --git a/cmd/event.c b/cmd/event.c new file mode 100644 index 0000000..9cac202 --- /dev/null +++ b/cmd/event.c @@ -0,0 +1,27 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Command-line access to events + * + * Copyright 2021 Google LLC + * Written by Simon Glass <sjg@chromium.org> + */ + +#include <common.h> +#include <command.h> +#include <event.h> + +static int do_event_list(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[]) +{ + event_show_spy_list(); + + return 0; +} + +#ifdef CONFIG_SYS_LONGHELP +static char event_help_text[] = + "event list - list event spies"; +#endif + +U_BOOT_CMD_WITH_SUBCMDS(event, "Events", event_help_text, + U_BOOT_SUBCMD_MKENT(list, 1, 1, do_event_list)); |