include/command.h - u-boot-mtk - Git at Google

 /* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * (C) Copyright 2000-2009
  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  */

 /*
  *  Definitions for Command Processor
  */
 #ifndef __COMMAND_H
 #define __COMMAND_H

 #include <env.h>
 #include <linker_lists.h>

 #ifndef NULL
 #define NULL	0
 #endif

 /* Default to a width of 8 characters for help message command width */
 #ifndef CONFIG_SYS_HELP_CMD_WIDTH
 #define CONFIG_SYS_HELP_CMD_WIDTH	10
 #endif

 #ifndef	__ASSEMBLY__
 /*
  * Monitor Command Table
  */

 struct cmd_tbl_s {
 	char		*name;		/* Command Name			*/
 	int		maxargs;	/* maximum number of arguments	*/
 					/*
 					 * Same as ->cmd() except the command
 					 * tells us if it can be repeated.
 					 * Replaces the old ->repeatable field
 					 * which was not able to make
 					 * repeatable property different for
 					 * the main command and sub-commands.
 					 */
 	int		(*cmd_rep)(struct cmd_tbl_s *cmd, int flags, int argc,
 				   char * const argv[], int *repeatable);
 					/* Implementation function	*/
 	int		(*cmd)(struct cmd_tbl_s *, int, int, char * const []);
 	char		*usage;		/* Usage message	(short)	*/
 #ifdef	CONFIG_SYS_LONGHELP
 	char		*help;		/* Help  message	(long)	*/
 #endif
 #ifdef CONFIG_AUTO_COMPLETE
 	/* do auto completion on the arguments */
 	int		(*complete)(int argc, char * const argv[], char last_char, int maxv, char *cmdv[]);
 #endif
 };

 typedef struct cmd_tbl_s	cmd_tbl_t;


 #if defined(CONFIG_CMD_RUN)
 extern int do_run(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
 #endif

 /* common/command.c */
 int _do_help (cmd_tbl_t *cmd_start, int cmd_items, cmd_tbl_t * cmdtp, int
 	      flag, int argc, char * const argv[]);
 cmd_tbl_t *find_cmd(const char *cmd);
 cmd_tbl_t *find_cmd_tbl (const char *cmd, cmd_tbl_t *table, int table_len);
 int complete_subcmdv(cmd_tbl_t *cmdtp, int count, int argc,
 		     char * const argv[], char last_char, int maxv,
 		     char *cmdv[]);

 extern int cmd_usage(const cmd_tbl_t *cmdtp);

 /* Dummy ->cmd and ->cmd_rep wrappers. */
 int cmd_always_repeatable(cmd_tbl_t *cmdtp, int flag, int argc,
 			  char * const argv[], int *repeatable);
 int cmd_never_repeatable(cmd_tbl_t *cmdtp, int flag, int argc,
 			 char * const argv[], int *repeatable);
 int cmd_discard_repeatable(cmd_tbl_t *cmdtp, int flag, int argc,
 			   char * const argv[]);

 static inline bool cmd_is_repeatable(cmd_tbl_t *cmdtp)
 {
 	return cmdtp->cmd_rep == cmd_always_repeatable;
 }

 #ifdef CONFIG_AUTO_COMPLETE
 extern int var_complete(int argc, char * const argv[], char last_char, int maxv, char *cmdv[]);
 extern int cmd_auto_complete(const char *const prompt, char *buf, int *np, int *colp);
 #endif

 /**
  * cmd_process_error() - report and process a possible error
  *
  * @cmdtp: Command which caused the error
  * @err: Error code (0 if none, -ve for error, like -EIO)
  * @return 0 (CMD_RET_SUCCESS) if there is not error,
  *	   1 (CMD_RET_FAILURE) if an error is found
  *	   -1 (CMD_RET_USAGE) if 'usage' error is found
  */
 int cmd_process_error(cmd_tbl_t *cmdtp, int err);

 /*
  * Monitor Command
  *
  * All commands use a common argument format:
  *
  * void function (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
  */

 #if defined(CONFIG_CMD_MEMORY) || \
 	defined(CONFIG_CMD_I2C) || \
 	defined(CONFIG_CMD_ITEST) || \
 	defined(CONFIG_CMD_PCI) || \
 	defined(CONFIG_CMD_SETEXPR)
 #define CMD_DATA_SIZE
 extern int cmd_get_data_size(char* arg, int default_size);
 #endif

 #ifdef CONFIG_CMD_BOOTD
 extern int do_bootd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
 #endif
 #ifdef CONFIG_CMD_BOOTM
 extern int do_bootm(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
 extern int bootm_maybe_autostart(cmd_tbl_t *cmdtp, const char *cmd);
 #else
 static inline int bootm_maybe_autostart(cmd_tbl_t *cmdtp, const char *cmd)
 {
 	return 0;
 }
 #endif

 extern int do_bootz(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);

 extern int do_booti(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);

 extern int common_diskboot(cmd_tbl_t *cmdtp, const char *intf, int argc,
 			   char *const argv[]);

 extern int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
 extern int do_poweroff(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);

 extern unsigned long do_go_exec(ulong (*entry)(int, char * const []), int argc,
 				char * const argv[]);

 #if defined(CONFIG_CMD_NVEDIT_EFI)
 extern int do_env_print_efi(cmd_tbl_t *cmdtp, int flag, int argc,
 			    char * const argv[]);
 extern int do_env_set_efi(cmd_tbl_t *cmdtp, int flag, int argc,
 			  char * const argv[]);
 #endif

 /*
  * Error codes that commands return to cmd_process(). We use the standard 0
  * and 1 for success and failure, but add one more case - failure with a
  * request to call cmd_usage(). But the cmd_process() function handles
  * CMD_RET_USAGE itself and after calling cmd_usage() it will return 1.
  * This is just a convenience for commands to avoid them having to call
  * cmd_usage() all over the place.
  */
 enum command_ret_t {
 	CMD_RET_SUCCESS,	/* 0 = Success */
 	CMD_RET_FAILURE,	/* 1 = Failure */
 	CMD_RET_USAGE = -1,	/* Failure, please report 'usage' error */
 };

 /**
  * Process a command with arguments. We look up the command and execute it
  * if valid. Otherwise we print a usage message.
  *
  * @param flag		Some flags normally 0 (see CMD_FLAG_.. above)
  * @param argc		Number of arguments (arg 0 must be the command text)
  * @param argv		Arguments
  * @param repeatable	This function sets this to 0 if the command is not
  *			repeatable. If the command is repeatable, the value
  *			is left unchanged.
  * @param ticks		If ticks is not null, this function set it to the
  *			number of ticks the command took to complete.
  * @return 0 if the command succeeded, 1 if it failed
  */
 int cmd_process(int flag, int argc, char * const argv[],
 			       int *repeatable, unsigned long *ticks);

 void fixup_cmdtable(cmd_tbl_t *cmdtp, int size);

 /**
  * board_run_command() - Fallback function to execute a command
  *
  * When no command line features are enabled in U-Boot, this function is
  * called to execute a command. Typically the function can look at the
  * command and perform a few very specific tasks, such as booting the
  * system in a particular way.
  *
  * This function is only used when CONFIG_CMDLINE is not enabled.
  *
  * In normal situations this function should not return, since U-Boot will
  * simply hang.
  *
  * @cmdline:	Command line string to execute
  * @return 0 if OK, 1 for error
  */
 int board_run_command(const char *cmdline);
 #endif	/* __ASSEMBLY__ */

 /*
  * Command Flags:
  */
 #define CMD_FLAG_REPEAT		0x0001	/* repeat last command		*/
 #define CMD_FLAG_BOOTD		0x0002	/* command is from bootd	*/
 #define CMD_FLAG_ENV		0x0004	/* command is from the environment */

 #ifdef CONFIG_AUTO_COMPLETE
 # define _CMD_COMPLETE(x) x,
 #else
 # define _CMD_COMPLETE(x)
 #endif
 #ifdef CONFIG_SYS_LONGHELP
 # define _CMD_HELP(x) x,
 #else
 # define _CMD_HELP(x)
 #endif

 #ifdef CONFIG_NEEDS_MANUAL_RELOC
 #define U_BOOT_SUBCMDS_RELOC(_cmdname)					\
 	static void _cmdname##_subcmds_reloc(void)			\
 	{								\
 		static int relocated;					\
 									\
 		if (relocated)						\
 			return;						\
 									\
 		fixup_cmdtable(_cmdname##_subcmds,			\
 			       ARRAY_SIZE(_cmdname##_subcmds));		\
 		relocated = 1;						\
 	}
 #else
 #define U_BOOT_SUBCMDS_RELOC(_cmdname)					\
 	static void _cmdname##_subcmds_reloc(void) { }
 #endif

 #define U_BOOT_SUBCMDS_DO_CMD(_cmdname)					\
 	static int do_##_cmdname(cmd_tbl_t *cmdtp, int flag, int argc,	\
 				 char * const argv[], int *repeatable)	\
 	{								\
 		cmd_tbl_t *subcmd;					\
 									\
 		_cmdname##_subcmds_reloc();				\
 									\
 		/* We need at least the cmd and subcmd names. */	\
 		if (argc < 2 || argc > CONFIG_SYS_MAXARGS)		\
 			return CMD_RET_USAGE;				\
 									\
 		subcmd = find_cmd_tbl(argv[1], _cmdname##_subcmds,	\
 				      ARRAY_SIZE(_cmdname##_subcmds));	\
 		if (!subcmd || argc - 1 > subcmd->maxargs)		\
 			return CMD_RET_USAGE;				\
 									\
 		if (flag == CMD_FLAG_REPEAT &&				\
 		    !cmd_is_repeatable(subcmd))				\
 			return CMD_RET_SUCCESS;				\
 									\
 		return subcmd->cmd_rep(subcmd, flag, argc - 1,		\
 				       argv + 1, repeatable);		\
 	}

 #ifdef CONFIG_AUTO_COMPLETE
 #define U_BOOT_SUBCMDS_COMPLETE(_cmdname)				\
 	static int complete_##_cmdname(int argc, char * const argv[],	\
 				       char last_char, int maxv,	\
 				       char *cmdv[])			\
 	{								\
 		return complete_subcmdv(_cmdname##_subcmds,		\
 					ARRAY_SIZE(_cmdname##_subcmds),	\
 					argc - 1, argv + 1, last_char,	\
 					maxv, cmdv);			\
 	}
 #else
 #define U_BOOT_SUBCMDS_COMPLETE(_cmdname)
 #endif

 #define U_BOOT_SUBCMDS(_cmdname, ...)					\
 	static cmd_tbl_t _cmdname##_subcmds[] = { __VA_ARGS__ };	\
 	U_BOOT_SUBCMDS_RELOC(_cmdname)					\
 	U_BOOT_SUBCMDS_DO_CMD(_cmdname)					\
 	U_BOOT_SUBCMDS_COMPLETE(_cmdname)

 #ifdef CONFIG_CMDLINE
 #define U_BOOT_CMDREP_MKENT_COMPLETE(_name, _maxargs, _cmd_rep,		\
 				     _usage, _help, _comp)		\
 		{ #_name, _maxargs, _cmd_rep, cmd_discard_repeatable,	\
 		  _usage, _CMD_HELP(_help) _CMD_COMPLETE(_comp) }

 #define U_BOOT_CMD_MKENT_COMPLETE(_name, _maxargs, _rep, _cmd,		\
 				_usage, _help, _comp)			\
 		{ #_name, _maxargs,					\
 		 _rep ? cmd_always_repeatable : cmd_never_repeatable,	\
 		 _cmd, _usage, _CMD_HELP(_help) _CMD_COMPLETE(_comp) }

 #define U_BOOT_CMD_COMPLETE(_name, _maxargs, _rep, _cmd, _usage, _help, _comp) \
 	ll_entry_declare(cmd_tbl_t, _name, cmd) =			\
 		U_BOOT_CMD_MKENT_COMPLETE(_name, _maxargs, _rep, _cmd,	\
 						_usage, _help, _comp);

 #define U_BOOT_CMDREP_COMPLETE(_name, _maxargs, _cmd_rep, _usage,	\
 			       _help, _comp)				\
 	ll_entry_declare(cmd_tbl_t, _name, cmd) =			\
 		U_BOOT_CMDREP_MKENT_COMPLETE(_name, _maxargs, _cmd_rep,	\
 					     _usage, _help, _comp)

 #else
 #define U_BOOT_SUBCMD_START(name)	static cmd_tbl_t name[] = {};
 #define U_BOOT_SUBCMD_END

 #define _CMD_REMOVE(_name, _cmd)					\
 	int __remove_ ## _name(void)					\
 	{								\
 		if (0)							\
 			_cmd(NULL, 0, 0, NULL);				\
 		return 0;						\
 	}

 #define U_BOOT_CMDREP_MKENT_COMPLETE(_name, _maxargs, _cmd_rep,		\
 				     _usage, _help, _comp)		\
 		{ #_name, _maxargs, 0 ? _cmd_rep : NULL, NULL, _usage,	\
 			_CMD_HELP(_help) _CMD_COMPLETE(_comp) }

 #define U_BOOT_CMD_MKENT_COMPLETE(_name, _maxargs, _rep, _cmd, _usage,	\
 				  _help, _comp)				\
 		{ #_name, _maxargs, NULL, 0 ? _cmd : NULL, _usage,	\
 			_CMD_HELP(_help) _CMD_COMPLETE(_comp) }

 #define U_BOOT_CMD_COMPLETE(_name, _maxargs, _rep, _cmd, _usage, _help,	\
 			    _comp)				\
 	_CMD_REMOVE(sub_ ## _name, _cmd)

 #define U_BOOT_CMDREP_COMPLETE(_name, _maxargs, _cmd_rep, _usage,	\
 			       _help, _comp)				\
 	_CMD_REMOVE(sub_ ## _name, _cmd_rep)

 #endif /* CONFIG_CMDLINE */

 #define U_BOOT_CMD(_name, _maxargs, _rep, _cmd, _usage, _help)		\
 	U_BOOT_CMD_COMPLETE(_name, _maxargs, _rep, _cmd, _usage, _help, NULL)

 #define U_BOOT_CMD_MKENT(_name, _maxargs, _rep, _cmd, _usage, _help)	\
 	U_BOOT_CMD_MKENT_COMPLETE(_name, _maxargs, _rep, _cmd,		\
 					_usage, _help, NULL)

 #define U_BOOT_SUBCMD_MKENT_COMPLETE(_name, _maxargs, _rep, _do_cmd,	\
 				     _comp)				\
 	U_BOOT_CMD_MKENT_COMPLETE(_name, _maxargs, _rep, _do_cmd,	\
 				  "", "", _comp)

 #define U_BOOT_SUBCMD_MKENT(_name, _maxargs, _rep, _do_cmd)		\
 	U_BOOT_SUBCMD_MKENT_COMPLETE(_name, _maxargs, _rep, _do_cmd,	\
 				     NULL)

 #define U_BOOT_CMD_WITH_SUBCMDS(_name, _usage, _help, ...)		\
 	U_BOOT_SUBCMDS(_name, __VA_ARGS__)				\
 	U_BOOT_CMDREP_COMPLETE(_name, CONFIG_SYS_MAXARGS, do_##_name,	\
 			       _usage, _help, complete_##_name)

 #endif	/* __COMMAND_H */
	/* SPDX-License-Identifier: GPL-2.0+ */
	/*
	* (C) Copyright 2000-2009
	* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
	*/

	/*
	* Definitions for Command Processor
	*/
	#ifndef __COMMAND_H
	#define __COMMAND_H

	#include <env.h>
	#include <linker_lists.h>

	#ifndef NULL
	#define NULL 0
	#endif

	/* Default to a width of 8 characters for help message command width */
	#ifndef CONFIG_SYS_HELP_CMD_WIDTH
	#define CONFIG_SYS_HELP_CMD_WIDTH 10
	#endif

	#ifndef __ASSEMBLY__
	/*
	* Monitor Command Table
	*/

	struct cmd_tbl_s {
	char name; / Command Name */
	int maxargs; /* maximum number of arguments */
	/*
	* Same as ->cmd() except the command
	* tells us if it can be repeated.
	* Replaces the old ->repeatable field
	* which was not able to make
	* repeatable property different for
	* the main command and sub-commands.
	*/
	int (cmd_rep)(struct cmd_tbl_s cmd, int flags, int argc,
	char * const argv[], int *repeatable);
	/* Implementation function */
	int (cmd)(struct cmd_tbl_s , int, int, char * const []);
	char usage; / Usage message (short) */
	#ifdef CONFIG_SYS_LONGHELP
	char help; / Help message (long) */
	#endif
	#ifdef CONFIG_AUTO_COMPLETE
	/* do auto completion on the arguments */
	int (complete)(int argc, char const argv[], char last_char, int maxv, char *cmdv[]);
	#endif
	};

	typedef struct cmd_tbl_s cmd_tbl_t;


	#if defined(CONFIG_CMD_RUN)
	extern int do_run(cmd_tbl_t cmdtp, int flag, int argc, char const argv[]);
	#endif

	/* common/command.c */
	int _do_help (cmd_tbl_t cmd_start, int cmd_items, cmd_tbl_t cmdtp, int
	flag, int argc, char * const argv[]);
	cmd_tbl_t find_cmd(const char cmd);
	cmd_tbl_t find_cmd_tbl (const char cmd, cmd_tbl_t *table, int table_len);
	int complete_subcmdv(cmd_tbl_t *cmdtp, int count, int argc,
	char * const argv[], char last_char, int maxv,
	char *cmdv[]);

	extern int cmd_usage(const cmd_tbl_t *cmdtp);

	/* Dummy ->cmd and ->cmd_rep wrappers. */
	int cmd_always_repeatable(cmd_tbl_t *cmdtp, int flag, int argc,
	char * const argv[], int *repeatable);
	int cmd_never_repeatable(cmd_tbl_t *cmdtp, int flag, int argc,
	char * const argv[], int *repeatable);
	int cmd_discard_repeatable(cmd_tbl_t *cmdtp, int flag, int argc,
	char * const argv[]);

	static inline bool cmd_is_repeatable(cmd_tbl_t *cmdtp)
	{
	return cmdtp->cmd_rep == cmd_always_repeatable;
	}

	#ifdef CONFIG_AUTO_COMPLETE
	extern int var_complete(int argc, char * const argv[], char last_char, int maxv, char *cmdv[]);
	extern int cmd_auto_complete(const char const prompt, char buf, int np, int colp);
	#endif

	/**
	* cmd_process_error() - report and process a possible error
	*
	* @cmdtp: Command which caused the error
	* @err: Error code (0 if none, -ve for error, like -EIO)
	* @return 0 (CMD_RET_SUCCESS) if there is not error,
	* 1 (CMD_RET_FAILURE) if an error is found
	* -1 (CMD_RET_USAGE) if 'usage' error is found
	*/
	int cmd_process_error(cmd_tbl_t *cmdtp, int err);

	/*
	* Monitor Command
	*
	* All commands use a common argument format:
	*
	* void function (cmd_tbl_t cmdtp, int flag, int argc, char const argv[]);
	*/

	#if defined(CONFIG_CMD_MEMORY) \|\| \
	defined(CONFIG_CMD_I2C) \|\| \
	defined(CONFIG_CMD_ITEST) \|\| \
	defined(CONFIG_CMD_PCI) \|\| \
	defined(CONFIG_CMD_SETEXPR)
	#define CMD_DATA_SIZE
	extern int cmd_get_data_size(char* arg, int default_size);
	#endif

	#ifdef CONFIG_CMD_BOOTD
	extern int do_bootd(cmd_tbl_t cmdtp, int flag, int argc, char const argv[]);
	#endif
	#ifdef CONFIG_CMD_BOOTM
	extern int do_bootm(cmd_tbl_t cmdtp, int flag, int argc, char const argv[]);
	extern int bootm_maybe_autostart(cmd_tbl_t cmdtp, const char cmd);
	#else
	static inline int bootm_maybe_autostart(cmd_tbl_t cmdtp, const char cmd)
	{
	return 0;
	}
	#endif

	extern int do_bootz(cmd_tbl_t cmdtp, int flag, int argc, char const argv[]);

	extern int do_booti(cmd_tbl_t cmdtp, int flag, int argc, char const argv[]);

	extern int common_diskboot(cmd_tbl_t cmdtp, const char intf, int argc,
	char *const argv[]);

	extern int do_reset(cmd_tbl_t cmdtp, int flag, int argc, char const argv[]);
	extern int do_poweroff(cmd_tbl_t cmdtp, int flag, int argc, char const argv[]);

	extern unsigned long do_go_exec(ulong (entry)(int, char const []), int argc,
	char * const argv[]);

	#if defined(CONFIG_CMD_NVEDIT_EFI)
	extern int do_env_print_efi(cmd_tbl_t *cmdtp, int flag, int argc,
	char * const argv[]);
	extern int do_env_set_efi(cmd_tbl_t *cmdtp, int flag, int argc,
	char * const argv[]);
	#endif

	/*
	* Error codes that commands return to cmd_process(). We use the standard 0
	* and 1 for success and failure, but add one more case - failure with a
	* request to call cmd_usage(). But the cmd_process() function handles
	* CMD_RET_USAGE itself and after calling cmd_usage() it will return 1.
	* This is just a convenience for commands to avoid them having to call
	* cmd_usage() all over the place.
	*/
	enum command_ret_t {
	CMD_RET_SUCCESS, /* 0 = Success */
	CMD_RET_FAILURE, /* 1 = Failure */
	CMD_RET_USAGE = -1, /* Failure, please report 'usage' error */
	};

	/**
	* Process a command with arguments. We look up the command and execute it
	* if valid. Otherwise we print a usage message.
	*
	* @param flag Some flags normally 0 (see CMD_FLAG_.. above)
	* @param argc Number of arguments (arg 0 must be the command text)
	* @param argv Arguments
	* @param repeatable This function sets this to 0 if the command is not
	* repeatable. If the command is repeatable, the value
	* is left unchanged.
	* @param ticks If ticks is not null, this function set it to the
	* number of ticks the command took to complete.
	* @return 0 if the command succeeded, 1 if it failed
	*/
	int cmd_process(int flag, int argc, char * const argv[],
	int repeatable, unsigned long ticks);

	void fixup_cmdtable(cmd_tbl_t *cmdtp, int size);

	/**
	* board_run_command() - Fallback function to execute a command
	*
	* When no command line features are enabled in U-Boot, this function is
	* called to execute a command. Typically the function can look at the
	* command and perform a few very specific tasks, such as booting the
	* system in a particular way.
	*
	* This function is only used when CONFIG_CMDLINE is not enabled.
	*
	* In normal situations this function should not return, since U-Boot will
	* simply hang.
	*
	* @cmdline: Command line string to execute
	* @return 0 if OK, 1 for error
	*/
	int board_run_command(const char *cmdline);
	#endif /* __ASSEMBLY__ */

	/*
	* Command Flags:
	*/
	#define CMD_FLAG_REPEAT 0x0001 /* repeat last command */
	#define CMD_FLAG_BOOTD 0x0002 /* command is from bootd */
	#define CMD_FLAG_ENV 0x0004 /* command is from the environment */

	#ifdef CONFIG_AUTO_COMPLETE
	# define _CMD_COMPLETE(x) x,
	#else
	# define _CMD_COMPLETE(x)
	#endif
	#ifdef CONFIG_SYS_LONGHELP
	# define _CMD_HELP(x) x,
	#else
	# define _CMD_HELP(x)
	#endif

	#ifdef CONFIG_NEEDS_MANUAL_RELOC
	#define U_BOOT_SUBCMDS_RELOC(_cmdname) \
	static void _cmdname##_subcmds_reloc(void) \
	{ \
	static int relocated; \
	\
	if (relocated) \
	return; \
	\
	fixup_cmdtable(_cmdname##_subcmds, \
	ARRAY_SIZE(_cmdname##_subcmds)); \
	relocated = 1; \
	}
	#else
	#define U_BOOT_SUBCMDS_RELOC(_cmdname) \
	static void _cmdname##_subcmds_reloc(void) { }
	#endif

	#define U_BOOT_SUBCMDS_DO_CMD(_cmdname) \
	static int do_##_cmdname(cmd_tbl_t *cmdtp, int flag, int argc, \
	char * const argv[], int *repeatable) \
	{ \
	cmd_tbl_t *subcmd; \
	\
	_cmdname##_subcmds_reloc(); \
	\
	/* We need at least the cmd and subcmd names. */ \
	if (argc < 2 \|\| argc > CONFIG_SYS_MAXARGS) \
	return CMD_RET_USAGE; \
	\
	subcmd = find_cmd_tbl(argv[1], _cmdname##_subcmds, \
	ARRAY_SIZE(_cmdname##_subcmds)); \
	if (!subcmd \|\| argc - 1 > subcmd->maxargs) \
	return CMD_RET_USAGE; \
	\
	if (flag == CMD_FLAG_REPEAT && \
	!cmd_is_repeatable(subcmd)) \
	return CMD_RET_SUCCESS; \
	\
	return subcmd->cmd_rep(subcmd, flag, argc - 1, \
	argv + 1, repeatable); \
	}

	#ifdef CONFIG_AUTO_COMPLETE
	#define U_BOOT_SUBCMDS_COMPLETE(_cmdname) \
	static int complete_##_cmdname(int argc, char * const argv[], \
	char last_char, int maxv, \
	char *cmdv[]) \
	{ \
	return complete_subcmdv(_cmdname##_subcmds, \
	ARRAY_SIZE(_cmdname##_subcmds), \
	argc - 1, argv + 1, last_char, \
	maxv, cmdv); \
	}
	#else
	#define U_BOOT_SUBCMDS_COMPLETE(_cmdname)
	#endif

	#define U_BOOT_SUBCMDS(_cmdname, ...) \
	static cmd_tbl_t _cmdname##_subcmds[] = { __VA_ARGS__ }; \
	U_BOOT_SUBCMDS_RELOC(_cmdname) \
	U_BOOT_SUBCMDS_DO_CMD(_cmdname) \
	U_BOOT_SUBCMDS_COMPLETE(_cmdname)

	#ifdef CONFIG_CMDLINE
	#define U_BOOT_CMDREP_MKENT_COMPLETE(_name, _maxargs, _cmd_rep, \
	_usage, _help, _comp) \
	{ #_name, _maxargs, _cmd_rep, cmd_discard_repeatable, \
	_usage, _CMD_HELP(_help) _CMD_COMPLETE(_comp) }

	#define U_BOOT_CMD_MKENT_COMPLETE(_name, _maxargs, _rep, _cmd, \
	_usage, _help, _comp) \
	{ #_name, _maxargs, \
	_rep ? cmd_always_repeatable : cmd_never_repeatable, \
	_cmd, _usage, _CMD_HELP(_help) _CMD_COMPLETE(_comp) }

	#define U_BOOT_CMD_COMPLETE(_name, _maxargs, _rep, _cmd, _usage, _help, _comp) \
	ll_entry_declare(cmd_tbl_t, _name, cmd) = \
	U_BOOT_CMD_MKENT_COMPLETE(_name, _maxargs, _rep, _cmd, \
	_usage, _help, _comp);

	#define U_BOOT_CMDREP_COMPLETE(_name, _maxargs, _cmd_rep, _usage, \
	_help, _comp) \
	ll_entry_declare(cmd_tbl_t, _name, cmd) = \
	U_BOOT_CMDREP_MKENT_COMPLETE(_name, _maxargs, _cmd_rep, \
	_usage, _help, _comp)

	#else
	#define U_BOOT_SUBCMD_START(name) static cmd_tbl_t name[] = {};
	#define U_BOOT_SUBCMD_END

	#define _CMD_REMOVE(_name, _cmd) \
	int __remove_ ## _name(void) \
	{ \
	if (0) \
	_cmd(NULL, 0, 0, NULL); \
	return 0; \
	}

	#define U_BOOT_CMDREP_MKENT_COMPLETE(_name, _maxargs, _cmd_rep, \
	_usage, _help, _comp) \
	{ #_name, _maxargs, 0 ? _cmd_rep : NULL, NULL, _usage, \
	_CMD_HELP(_help) _CMD_COMPLETE(_comp) }

	#define U_BOOT_CMD_MKENT_COMPLETE(_name, _maxargs, _rep, _cmd, _usage, \
	_help, _comp) \
	{ #_name, _maxargs, NULL, 0 ? _cmd : NULL, _usage, \
	_CMD_HELP(_help) _CMD_COMPLETE(_comp) }

	#define U_BOOT_CMD_COMPLETE(_name, _maxargs, _rep, _cmd, _usage, _help, \
	_comp) \
	_CMD_REMOVE(sub_ ## _name, _cmd)

	#define U_BOOT_CMDREP_COMPLETE(_name, _maxargs, _cmd_rep, _usage, \
	_help, _comp) \
	_CMD_REMOVE(sub_ ## _name, _cmd_rep)

	#endif /* CONFIG_CMDLINE */

	#define U_BOOT_CMD(_name, _maxargs, _rep, _cmd, _usage, _help) \
	U_BOOT_CMD_COMPLETE(_name, _maxargs, _rep, _cmd, _usage, _help, NULL)

	#define U_BOOT_CMD_MKENT(_name, _maxargs, _rep, _cmd, _usage, _help) \
	U_BOOT_CMD_MKENT_COMPLETE(_name, _maxargs, _rep, _cmd, \
	_usage, _help, NULL)

	#define U_BOOT_SUBCMD_MKENT_COMPLETE(_name, _maxargs, _rep, _do_cmd, \
	_comp) \
	U_BOOT_CMD_MKENT_COMPLETE(_name, _maxargs, _rep, _do_cmd, \
	"", "", _comp)

	#define U_BOOT_SUBCMD_MKENT(_name, _maxargs, _rep, _do_cmd) \
	U_BOOT_SUBCMD_MKENT_COMPLETE(_name, _maxargs, _rep, _do_cmd, \
	NULL)

	#define U_BOOT_CMD_WITH_SUBCMDS(_name, _usage, _help, ...) \
	U_BOOT_SUBCMDS(_name, __VA_ARGS__) \
	U_BOOT_CMDREP_COMPLETE(_name, CONFIG_SYS_MAXARGS, do_##_name, \
	_usage, _help, complete_##_name)

	#endif /* __COMMAND_H */