1170ab110SJoe Hershberger /* 2170ab110SJoe Hershberger * (C) Copyright 2012 3170ab110SJoe Hershberger * Joe Hershberger, National Instruments, joe.hershberger@ni.com 4170ab110SJoe Hershberger * 51a459660SWolfgang Denk * SPDX-License-Identifier: GPL-2.0+ 6170ab110SJoe Hershberger */ 7170ab110SJoe Hershberger 8170ab110SJoe Hershberger #ifndef __ENV_CALLBACK_H__ 9170ab110SJoe Hershberger #define __ENV_CALLBACK_H__ 10170ab110SJoe Hershberger 112598090bSJoe Hershberger #include <env_flags.h> 12170ab110SJoe Hershberger #include <linker_lists.h> 13170ab110SJoe Hershberger #include <search.h> 14170ab110SJoe Hershberger 15170ab110SJoe Hershberger #define ENV_CALLBACK_VAR ".callbacks" 16170ab110SJoe Hershberger 17170ab110SJoe Hershberger /* Board configs can define additional static callback bindings */ 18170ab110SJoe Hershberger #ifndef CONFIG_ENV_CALLBACK_LIST_STATIC 19170ab110SJoe Hershberger #define CONFIG_ENV_CALLBACK_LIST_STATIC 20170ab110SJoe Hershberger #endif 21170ab110SJoe Hershberger 22e080d545SJoe Hershberger #ifdef CONFIG_SILENT_CONSOLE 23e080d545SJoe Hershberger #define SILENT_CALLBACK "silent:silent," 24e080d545SJoe Hershberger #else 25e080d545SJoe Hershberger #define SILENT_CALLBACK 26e080d545SJoe Hershberger #endif 27e080d545SJoe Hershberger 28c0880485SNikita Kiryanov #ifdef CONFIG_SPLASHIMAGE_GUARD 29c0880485SNikita Kiryanov #define SPLASHIMAGE_CALLBACK "splashimage:splashimage," 30c0880485SNikita Kiryanov #else 31c0880485SNikita Kiryanov #define SPLASHIMAGE_CALLBACK 32c0880485SNikita Kiryanov #endif 33c0880485SNikita Kiryanov 34*bdf1fe4eSJoe Hershberger #ifdef CONFIG_REGEX 35*bdf1fe4eSJoe Hershberger #define ENV_DOT_ESCAPE "\\" 36*bdf1fe4eSJoe Hershberger #else 37*bdf1fe4eSJoe Hershberger #define ENV_DOT_ESCAPE 38*bdf1fe4eSJoe Hershberger #endif 39*bdf1fe4eSJoe Hershberger 40170ab110SJoe Hershberger /* 41170ab110SJoe Hershberger * This list of callback bindings is static, but may be overridden by defining 42170ab110SJoe Hershberger * a new association in the ".callbacks" environment variable. 43170ab110SJoe Hershberger */ 44*bdf1fe4eSJoe Hershberger #define ENV_CALLBACK_LIST_STATIC ENV_DOT_ESCAPE ENV_CALLBACK_VAR ":callbacks," \ 45*bdf1fe4eSJoe Hershberger ENV_DOT_ESCAPE ENV_FLAGS_VAR ":flags," \ 4632057717SJoe Hershberger "baudrate:baudrate," \ 47a9f51c9bSJoe Hershberger "bootfile:bootfile," \ 481cf0a8b2SJoe Hershberger "loadaddr:loadaddr," \ 49e080d545SJoe Hershberger SILENT_CALLBACK \ 50c0880485SNikita Kiryanov SPLASHIMAGE_CALLBACK \ 51849d5d9cSJoe Hershberger "stdin:console,stdout:console,stderr:console," \ 52170ab110SJoe Hershberger CONFIG_ENV_CALLBACK_LIST_STATIC 53170ab110SJoe Hershberger 54170ab110SJoe Hershberger struct env_clbk_tbl { 55170ab110SJoe Hershberger const char *name; /* Callback name */ 56170ab110SJoe Hershberger int (*callback)(const char *name, const char *value, enum env_op op, 57170ab110SJoe Hershberger int flags); 58170ab110SJoe Hershberger }; 59170ab110SJoe Hershberger 60170ab110SJoe Hershberger void env_callback_init(ENTRY *var_entry); 61170ab110SJoe Hershberger 62170ab110SJoe Hershberger /* 63170ab110SJoe Hershberger * Define a callback that can be associated with variables. 64170ab110SJoe Hershberger * when associated through the ".callbacks" environment variable, the callback 65170ab110SJoe Hershberger * will be executed any time the variable is inserted, overwritten, or deleted. 66170ab110SJoe Hershberger */ 67f8cfcf1bSScott Wood #ifdef CONFIG_SPL_BUILD 68f8cfcf1bSScott Wood #define U_BOOT_ENV_CALLBACK(name, callback) \ 693ea664c7SJeroen Hofstee static inline __maybe_unused void _u_boot_env_noop_##name(void) \ 70f8cfcf1bSScott Wood { \ 71f8cfcf1bSScott Wood (void)callback; \ 72f8cfcf1bSScott Wood } 73f8cfcf1bSScott Wood #else 74170ab110SJoe Hershberger #define U_BOOT_ENV_CALLBACK(name, callback) \ 75ef123c52SAlbert ARIBAUD ll_entry_declare(struct env_clbk_tbl, name, env_clbk) = \ 76170ab110SJoe Hershberger {#name, callback} 77f8cfcf1bSScott Wood #endif 78170ab110SJoe Hershberger 79170ab110SJoe Hershberger #endif /* __ENV_CALLBACK_H__ */ 80