/* * (C) Copyright 2012 * Joe Hershberger, National Instruments, joe.hershberger@ni.com * * SPDX-License-Identifier: GPL-2.0+ */ #ifndef __ENV_CALLBACK_H__ #define __ENV_CALLBACK_H__ #include <env_flags.h> #include <linker_lists.h> #include <search.h> #define ENV_CALLBACK_VAR ".callbacks" /* Board configs can define additional static callback bindings */ #ifndef CONFIG_ENV_CALLBACK_LIST_STATIC #define CONFIG_ENV_CALLBACK_LIST_STATIC #endif #ifdef CONFIG_SILENT_CONSOLE #define SILENT_CALLBACK "silent:silent," #else #define SILENT_CALLBACK #endif #ifdef CONFIG_SPLASHIMAGE_GUARD #define SPLASHIMAGE_CALLBACK "splashimage:splashimage," #else #define SPLASHIMAGE_CALLBACK #endif /* * This list of callback bindings is static, but may be overridden by defining * a new association in the ".callbacks" environment variable. */ #define ENV_CALLBACK_LIST_STATIC ENV_CALLBACK_VAR ":callbacks," \ ENV_FLAGS_VAR ":flags," \ "baudrate:baudrate," \ "bootfile:bootfile," \ "loadaddr:loadaddr," \ SILENT_CALLBACK \ SPLASHIMAGE_CALLBACK \ "stdin:console,stdout:console,stderr:console," \ CONFIG_ENV_CALLBACK_LIST_STATIC struct env_clbk_tbl { const char *name; /* Callback name */ int (*callback)(const char *name, const char *value, enum env_op op, int flags); }; void env_callback_init(ENTRY *var_entry); /* * Define a callback that can be associated with variables. * when associated through the ".callbacks" environment variable, the callback * will be executed any time the variable is inserted, overwritten, or deleted. */ #ifdef CONFIG_SPL_BUILD #define U_BOOT_ENV_CALLBACK(name, callback) \ static inline void _u_boot_env_noop_##name(void) \ { \ (void)callback; \ } #else #define U_BOOT_ENV_CALLBACK(name, callback) \ ll_entry_declare(struct env_clbk_tbl, name, env_clbk) = \ {#name, callback} #endif #endif /* __ENV_CALLBACK_H__ */