[thirdparty/u-boot.git] / include / env_callback.h

/* SPDX-License-Identifier: GPL-2.0+ */
/*
 * (C) Copyright 2012
 * Joe Hershberger, National Instruments, joe.hershberger@ni.com
 */

#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

#ifdef CONFIG_REGEX
#define ENV_DOT_ESCAPE "\\"
#else
#define ENV_DOT_ESCAPE
#endif

#ifdef CONFIG_CMD_DNS
#define DNS_CALLBACK "dnsip:dnsip,"
#else
#define DNS_CALLBACK
#endif

#ifdef CONFIG_CMD_NET
#define NET_CALLBACKS \
	"bootfile:bootfile," \
	"ipaddr:ipaddr," \
	"gatewayip:gatewayip," \
	"netmask:netmask," \
	"serverip:serverip," \
	"nvlan:nvlan," \
	"vlan:vlan," \
	DNS_CALLBACK \
	"eth" ETHADDR_WILDCARD "addr:ethaddr,"
#else
#define NET_CALLBACKS
#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_DOT_ESCAPE ENV_CALLBACK_VAR ":callbacks," \
	ENV_DOT_ESCAPE ENV_FLAGS_VAR ":flags," \
	"baudrate:baudrate," \
	NET_CALLBACKS \
	"loadaddr:loadaddr," \
	SILENT_CALLBACK \
	SPLASHIMAGE_CALLBACK \
	"stdin:console,stdout:console,stderr:console," \
	"serial#:serialno," \
	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 __maybe_unused 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__ */
Commit	Line	Data
	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	#else
	36	#define ENV_DOT_ESCAPE
	37	#endif
	38
	39	#ifdef CONFIG_CMD_DNS
	40	#define DNS_CALLBACK "dnsip:dnsip,"
	41	#else
	42	#define DNS_CALLBACK
	43	#endif
	44
	45	#ifdef CONFIG_CMD_NET
	46	#define NET_CALLBACKS \
	47	"bootfile:bootfile," \
	48	"ipaddr:ipaddr," \
	49	"gatewayip:gatewayip," \
	50	"netmask:netmask," \
	51	"serverip:serverip," \
	52	"nvlan:nvlan," \
	53	"vlan:vlan," \
	54	DNS_CALLBACK \
	55	"eth" ETHADDR_WILDCARD "addr:ethaddr,"
	56	#else
	57	#define NET_CALLBACKS
	58	#endif
	59
	60	/*
	61	* This list of callback bindings is static, but may be overridden by defining
	62	* a new association in the ".callbacks" environment variable.
	63	*/
	64	#define ENV_CALLBACK_LIST_STATIC ENV_DOT_ESCAPE ENV_CALLBACK_VAR ":callbacks," \
	65	ENV_DOT_ESCAPE ENV_FLAGS_VAR ":flags," \
	66	"baudrate:baudrate," \
	67	NET_CALLBACKS \
	68	"loadaddr:loadaddr," \
	69	SILENT_CALLBACK \
	70	SPLASHIMAGE_CALLBACK \
	71	"stdin:console,stdout:console,stderr:console," \
	72	"serial#:serialno," \
	73	CONFIG_ENV_CALLBACK_LIST_STATIC
	74
	75	struct env_clbk_tbl {
	76	const char name; / Callback name */
	77	int (callback)(const char name, const char *value, enum env_op op,
	78	int flags);
	79	};
	80
	81	void env_callback_init(ENTRY *var_entry);
	82
	83	/*
	84	* Define a callback that can be associated with variables.
	85	* when associated through the ".callbacks" environment variable, the callback
	86	* will be executed any time the variable is inserted, overwritten, or deleted.
	87	*/
	88	#ifdef CONFIG_SPL_BUILD
	89	#define U_BOOT_ENV_CALLBACK(name, callback) \
	90	static inline __maybe_unused void _u_boot_env_noop_##name(void) \
	91	{ \
	92	(void)callback; \
	93	}
	94	#else
	95	#define U_BOOT_ENV_CALLBACK(name, callback) \
	96	ll_entry_declare(struct env_clbk_tbl, name, env_clbk) = \
	97	{#name, callback}
	98	#endif
	99
	100	#endif /* __ENV_CALLBACK_H__ */