LXR uboot/include/env

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