1*4882a593Smuzhiyun /* 2*4882a593Smuzhiyun * (C) Copyright 2012 3*4882a593Smuzhiyun * Joe Hershberger, National Instruments, joe.hershberger@ni.com 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+ 6*4882a593Smuzhiyun */ 7*4882a593Smuzhiyun 8*4882a593Smuzhiyun #ifndef __ENV_CALLBACK_H__ 9*4882a593Smuzhiyun #define __ENV_CALLBACK_H__ 10*4882a593Smuzhiyun 11*4882a593Smuzhiyun #include <env_flags.h> 12*4882a593Smuzhiyun #include <linker_lists.h> 13*4882a593Smuzhiyun #include <search.h> 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun #define ENV_CALLBACK_VAR ".callbacks" 16*4882a593Smuzhiyun 17*4882a593Smuzhiyun /* Board configs can define additional static callback bindings */ 18*4882a593Smuzhiyun #ifndef CONFIG_ENV_CALLBACK_LIST_STATIC 19*4882a593Smuzhiyun #define CONFIG_ENV_CALLBACK_LIST_STATIC 20*4882a593Smuzhiyun #endif 21*4882a593Smuzhiyun 22*4882a593Smuzhiyun #ifdef CONFIG_SILENT_CONSOLE 23*4882a593Smuzhiyun #define SILENT_CALLBACK "silent:silent," 24*4882a593Smuzhiyun #else 25*4882a593Smuzhiyun #define SILENT_CALLBACK 26*4882a593Smuzhiyun #endif 27*4882a593Smuzhiyun 28*4882a593Smuzhiyun #ifdef CONFIG_SPLASHIMAGE_GUARD 29*4882a593Smuzhiyun #define SPLASHIMAGE_CALLBACK "splashimage:splashimage," 30*4882a593Smuzhiyun #else 31*4882a593Smuzhiyun #define SPLASHIMAGE_CALLBACK 32*4882a593Smuzhiyun #endif 33*4882a593Smuzhiyun 34*4882a593Smuzhiyun #ifdef CONFIG_REGEX 35*4882a593Smuzhiyun #define ENV_DOT_ESCAPE "\\" 36*4882a593Smuzhiyun #define ETHADDR_WILDCARD "\\d?" 37*4882a593Smuzhiyun #else 38*4882a593Smuzhiyun #define ENV_DOT_ESCAPE 39*4882a593Smuzhiyun #define ETHADDR_WILDCARD 40*4882a593Smuzhiyun #endif 41*4882a593Smuzhiyun 42*4882a593Smuzhiyun #ifdef CONFIG_CMD_DNS 43*4882a593Smuzhiyun #define DNS_CALLBACK "dnsip:dnsip," 44*4882a593Smuzhiyun #else 45*4882a593Smuzhiyun #define DNS_CALLBACK 46*4882a593Smuzhiyun #endif 47*4882a593Smuzhiyun 48*4882a593Smuzhiyun #ifdef CONFIG_NET 49*4882a593Smuzhiyun #define NET_CALLBACKS \ 50*4882a593Smuzhiyun "bootfile:bootfile," \ 51*4882a593Smuzhiyun "ipaddr:ipaddr," \ 52*4882a593Smuzhiyun "gatewayip:gatewayip," \ 53*4882a593Smuzhiyun "netmask:netmask," \ 54*4882a593Smuzhiyun "serverip:serverip," \ 55*4882a593Smuzhiyun "nvlan:nvlan," \ 56*4882a593Smuzhiyun "vlan:vlan," \ 57*4882a593Smuzhiyun DNS_CALLBACK \ 58*4882a593Smuzhiyun "eth" ETHADDR_WILDCARD "addr:ethaddr," 59*4882a593Smuzhiyun #else 60*4882a593Smuzhiyun #define NET_CALLBACKS 61*4882a593Smuzhiyun #endif 62*4882a593Smuzhiyun 63*4882a593Smuzhiyun /* 64*4882a593Smuzhiyun * This list of callback bindings is static, but may be overridden by defining 65*4882a593Smuzhiyun * a new association in the ".callbacks" environment variable. 66*4882a593Smuzhiyun */ 67*4882a593Smuzhiyun #define ENV_CALLBACK_LIST_STATIC ENV_DOT_ESCAPE ENV_CALLBACK_VAR ":callbacks," \ 68*4882a593Smuzhiyun ENV_DOT_ESCAPE ENV_FLAGS_VAR ":flags," \ 69*4882a593Smuzhiyun "baudrate:baudrate," \ 70*4882a593Smuzhiyun NET_CALLBACKS \ 71*4882a593Smuzhiyun "loadaddr:loadaddr," \ 72*4882a593Smuzhiyun SILENT_CALLBACK \ 73*4882a593Smuzhiyun SPLASHIMAGE_CALLBACK \ 74*4882a593Smuzhiyun "stdin:console,stdout:console,stderr:console," \ 75*4882a593Smuzhiyun "serial#:serialno," \ 76*4882a593Smuzhiyun CONFIG_ENV_CALLBACK_LIST_STATIC 77*4882a593Smuzhiyun 78*4882a593Smuzhiyun struct env_clbk_tbl { 79*4882a593Smuzhiyun const char *name; /* Callback name */ 80*4882a593Smuzhiyun int (*callback)(const char *name, const char *value, enum env_op op, 81*4882a593Smuzhiyun int flags); 82*4882a593Smuzhiyun }; 83*4882a593Smuzhiyun 84*4882a593Smuzhiyun void env_callback_init(ENTRY *var_entry); 85*4882a593Smuzhiyun 86*4882a593Smuzhiyun /* 87*4882a593Smuzhiyun * Define a callback that can be associated with variables. 88*4882a593Smuzhiyun * when associated through the ".callbacks" environment variable, the callback 89*4882a593Smuzhiyun * will be executed any time the variable is inserted, overwritten, or deleted. 90*4882a593Smuzhiyun */ 91*4882a593Smuzhiyun #ifdef CONFIG_SPL_BUILD 92*4882a593Smuzhiyun #define U_BOOT_ENV_CALLBACK(name, callback) \ 93*4882a593Smuzhiyun static inline __maybe_unused void _u_boot_env_noop_##name(void) \ 94*4882a593Smuzhiyun { \ 95*4882a593Smuzhiyun (void)callback; \ 96*4882a593Smuzhiyun } 97*4882a593Smuzhiyun #else 98*4882a593Smuzhiyun #define U_BOOT_ENV_CALLBACK(name, callback) \ 99*4882a593Smuzhiyun ll_entry_declare(struct env_clbk_tbl, name, env_clbk) = \ 100*4882a593Smuzhiyun {#name, callback} 101*4882a593Smuzhiyun #endif 102*4882a593Smuzhiyun 103*4882a593Smuzhiyun #endif /* __ENV_CALLBACK_H__ */ 104