3 * Joe Hershberger, National Instruments, joe.hershberger@ni.com
5 * SPDX-License-Identifier: GPL-2.0+
8 #ifndef __ENV_CALLBACK_H__
9 #define __ENV_CALLBACK_H__
11 #include <env_flags.h>
12 #include <linker_lists.h>
15 #define ENV_CALLBACK_VAR ".callbacks"
17 /* Board configs can define additional static callback bindings */
18 #ifndef CONFIG_ENV_CALLBACK_LIST_STATIC
19 #define CONFIG_ENV_CALLBACK_LIST_STATIC
22 #ifdef CONFIG_SILENT_CONSOLE
23 #define SILENT_CALLBACK "silent:silent,"
25 #define SILENT_CALLBACK
28 #ifdef CONFIG_SPLASHIMAGE_GUARD
29 #define SPLASHIMAGE_CALLBACK "splashimage:splashimage,"
31 #define SPLASHIMAGE_CALLBACK
35 #define ENV_DOT_ESCAPE "\\"
37 #define ENV_DOT_ESCAPE
41 * This list of callback bindings is static, but may be overridden by defining
42 * a new association in the ".callbacks" environment variable.
44 #define ENV_CALLBACK_LIST_STATIC ENV_DOT_ESCAPE ENV_CALLBACK_VAR ":callbacks," \
45 ENV_DOT_ESCAPE ENV_FLAGS_VAR ":flags," \
46 "baudrate:baudrate," \
47 "bootfile:bootfile," \
48 "loadaddr:loadaddr," \
50 SPLASHIMAGE_CALLBACK \
51 "stdin:console,stdout:console,stderr:console," \
52 CONFIG_ENV_CALLBACK_LIST_STATIC
55 const char *name; /* Callback name */
56 int (*callback)(const char *name, const char *value, enum env_op op,
60 void env_callback_init(ENTRY *var_entry);
63 * Define a callback that can be associated with variables.
64 * when associated through the ".callbacks" environment variable, the callback
65 * will be executed any time the variable is inserted, overwritten, or deleted.
67 #ifdef CONFIG_SPL_BUILD
68 #define U_BOOT_ENV_CALLBACK(name, callback) \
69 static inline __maybe_unused void _u_boot_env_noop_##name(void) \
74 #define U_BOOT_ENV_CALLBACK(name, callback) \
75 ll_entry_declare(struct env_clbk_tbl, name, env_clbk) = \
79 #endif /* __ENV_CALLBACK_H__ */