3 * Joe Hershberger, National Instruments, joe.hershberger@ni.com
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
24 #ifndef __ENV_CALLBACK_H__
25 #define __ENV_CALLBACK_H__
27 #include <linker_lists.h>
30 #define ENV_CALLBACK_VAR ".callbacks"
32 /* Board configs can define additional static callback bindings */
33 #ifndef CONFIG_ENV_CALLBACK_LIST_STATIC
34 #define CONFIG_ENV_CALLBACK_LIST_STATIC
37 #ifdef CONFIG_SILENT_CONSOLE
38 #define SILENT_CALLBACK "silent:silent,"
40 #define SILENT_CALLBACK
44 * This list of callback bindings is static, but may be overridden by defining
45 * a new association in the ".callbacks" environment variable.
47 #define ENV_CALLBACK_LIST_STATIC ENV_CALLBACK_VAR ":callbacks," \
48 "baudrate:baudrate," \
49 "bootfile:bootfile," \
50 "loadaddr:loadaddr," \
52 "stdin:console,stdout:console,stderr:console," \
53 CONFIG_ENV_CALLBACK_LIST_STATIC
56 const char *name; /* Callback name */
57 int (*callback)(const char *name, const char *value, enum env_op op,
61 struct env_clbk_tbl *find_env_callback(const char *);
62 void env_callback_init(ENTRY *var_entry);
65 * Define a callback that can be associated with variables.
66 * when associated through the ".callbacks" environment variable, the callback
67 * will be executed any time the variable is inserted, overwritten, or deleted.
69 #define U_BOOT_ENV_CALLBACK(name, callback) \
70 ll_entry_declare(struct env_clbk_tbl, name, env_clbk, env_clbk) = \
73 #endif /* __ENV_CALLBACK_H__ */