[J-u-boot.git] / include / command.h

/*
 * (C) Copyright 2000-2009
 * Wolfgang Denk, DENX Software Engineering, [email protected].
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

/*
 *  Definitions for Command Processor
 */
#ifndef __COMMAND_H
#define __COMMAND_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	8
#endif

#ifndef	__ASSEMBLY__
/*
 * Monitor Command Table
 */

struct cmd_tbl_s {
	char		*name;		/* Command Name			*/
	int		maxargs;	/* maximum number of arguments	*/
	int		repeatable;	/* autorepeat allowed?		*/
					/* 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);

extern int cmd_usage(const cmd_tbl_t *cmdtp);

#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 if there is not error, 1 (CMD_RET_FAILURE) if an 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)
#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[]);

/*
 * 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_CMDLINE
#define U_BOOT_CMD_MKENT_COMPLETE(_name, _maxargs, _rep, _cmd,		\
				_usage, _help, _comp)			\
		{ #_name, _maxargs, _rep, _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);

#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_CMD_MKENT_COMPLETE(_name, _maxargs, _rep, _cmd, _usage,	\
				  _help, _comp)				\
		{ #_name, _maxargs, _rep, 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)

#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)

#endif	/* __COMMAND_H */
Commit	Line	Data
78f6622a	1	/*
2dce551e	2	* (C) Copyright 2000-2009
78f6622a WD	3	* Wolfgang Denk, DENX Software Engineering, [email protected].
78f6622a WD	4	*
1a459660	5	* SPDX-License-Identifier: GPL-2.0+
78f6622a WD	6	*/
	7
	8	/*
	9	* Definitions for Command Processor
	10	*/
	11	#ifndef __COMMAND_H
	12	#define __COMMAND_H
	13
6c7c946c	14	#include <linker_lists.h>
f2302d44	15
78f6622a WD	16	#ifndef NULL
	17	#define NULL 0
	18	#endif
	19
2fb2604d PT	20	/* Default to a width of 8 characters for help message command width */
	21	#ifndef CONFIG_SYS_HELP_CMD_WIDTH
	22	#define CONFIG_SYS_HELP_CMD_WIDTH 8
	23	#endif
	24
78f6622a WD	25	#ifndef __ASSEMBLY__
	26	/*
	27	* Monitor Command Table
	28	*/
	29
	30	struct cmd_tbl_s {
	31	char name; / Command Name */
78f6622a WD	32	int maxargs; /* maximum number of arguments */
	33	int repeatable; /* autorepeat allowed? */
	34	/* Implementation function */
54841ab5	35	int (cmd)(struct cmd_tbl_s , int, int, char * const []);
78f6622a	36	char usage; / Usage message (short) */
6d0f6bcf	37	#ifdef CONFIG_SYS_LONGHELP
78f6622a WD	38	char help; / Help message (long) */
78f6622a WD	39	#endif
04a85b3b WD	40	#ifdef CONFIG_AUTO_COMPLETE
04a85b3b WD	41	/* do auto completion on the arguments */
54841ab5	42	int (complete)(int argc, char const argv[], char last_char, int maxv, char *cmdv[]);
04a85b3b	43	#endif
78f6622a WD	44	};
	45
	46	typedef struct cmd_tbl_s cmd_tbl_t;
	47
78f6622a	48
d09b1787 IG	49	#if defined(CONFIG_CMD_RUN)
	50	extern int do_run(cmd_tbl_t cmdtp, int flag, int argc, char const argv[]);
	51	#endif
78f6622a WD	52
78f6622a WD	53	/* common/command.c */
2dce551e	54	int _do_help (cmd_tbl_t cmd_start, int cmd_items, cmd_tbl_t cmdtp, int
54841ab5	55	flag, int argc, char * const argv[]);
78f6622a	56	cmd_tbl_t find_cmd(const char cmd);
b799cb4c	57	cmd_tbl_t find_cmd_tbl (const char cmd, cmd_tbl_t *table, int table_len);
78f6622a	58
e84ffddb	59	extern int cmd_usage(const cmd_tbl_t *cmdtp);
62c3ae7c	60
04a85b3b	61	#ifdef CONFIG_AUTO_COMPLETE
722b061b	62	extern int var_complete(int argc, char * const argv[], char last_char, int maxv, char *cmdv[]);
04a85b3b WD	63	extern int cmd_auto_complete(const char const prompt, char buf, int np, int colp);
	64	#endif
	65
16ff9902 SG	66	/**
	67	* cmd_process_error() - report and process a possible error
	68	*
	69	* @cmdtp: Command which caused the error
	70	* @err: Error code (0 if none, -ve for error, like -EIO)
	71	* @return 0 if there is not error, 1 (CMD_RET_FAILURE) if an error is found
	72	*/
	73	int cmd_process_error(cmd_tbl_t *cmdtp, int err);
	74
78f6622a WD	75	/*
	76	* Monitor Command
	77	*
	78	* All commands use a common argument format:
	79	*
54841ab5	80	* void function (cmd_tbl_t cmdtp, int flag, int argc, char const argv[]);
78f6622a WD	81	*/
78f6622a WD	82
6f62d7c4 SG	83	#if defined(CONFIG_CMD_MEMORY) \|\| \
	84	defined(CONFIG_CMD_I2C) \|\| \
	85	defined(CONFIG_CMD_ITEST) \|\| \
	86	defined(CONFIG_CMD_PCI)
8a40fb14 JCPV	87	#define CMD_DATA_SIZE
	88	extern int cmd_get_data_size(char* arg, int default_size);
	89	#endif
	90
7842fb7c MF	91	#ifdef CONFIG_CMD_BOOTD
	92	extern int do_bootd(cmd_tbl_t cmdtp, int flag, int argc, char const argv[]);
	93	#endif
67d668bf	94	#ifdef CONFIG_CMD_BOOTM
36ebb787	95	extern int do_bootm(cmd_tbl_t cmdtp, int flag, int argc, char const argv[]);
67d668bf MF	96	extern int bootm_maybe_autostart(cmd_tbl_t cmdtp, const char cmd);
	97	#else
	98	static inline int bootm_maybe_autostart(cmd_tbl_t cmdtp, const char cmd)
	99	{
	100	return 0;
	101	}
	102	#endif
7405a133	103
da620222 RH	104	extern int do_bootz(cmd_tbl_t cmdtp, int flag, int argc, char const argv[]);
da620222 RH	105
8b5c738b SW	106	extern int do_booti(cmd_tbl_t cmdtp, int flag, int argc, char const argv[]);
8b5c738b SW	107
7405a133 RH	108	extern int common_diskboot(cmd_tbl_t cmdtp, const char intf, int argc,
	109	char *const argv[]);
	110
882b7d72	111	extern int do_reset(cmd_tbl_t cmdtp, int flag, int argc, char const argv[]);
4e42e29f	112	extern int do_poweroff(cmd_tbl_t cmdtp, int flag, int argc, char const argv[]);
36ebb787	113
9d12d5d4 SG	114	/*
	115	* Error codes that commands return to cmd_process(). We use the standard 0
	116	* and 1 for success and failure, but add one more case - failure with a
	117	* request to call cmd_usage(). But the cmd_process() function handles
	118	* CMD_RET_USAGE itself and after calling cmd_usage() it will return 1.
	119	* This is just a convenience for commands to avoid them having to call
	120	* cmd_usage() all over the place.
	121	*/
	122	enum command_ret_t {
	123	CMD_RET_SUCCESS, /* 0 = Success */
	124	CMD_RET_FAILURE, /* 1 = Failure */
	125	CMD_RET_USAGE = -1, /* Failure, please report 'usage' error */
	126	};
	127
	128	/**
	129	* Process a command with arguments. We look up the command and execute it
	130	* if valid. Otherwise we print a usage message.
	131	*
	132	* @param flag Some flags normally 0 (see CMD_FLAG_.. above)
	133	* @param argc Number of arguments (arg 0 must be the command text)
	134	* @param argv Arguments
	135	* @param repeatable This function sets this to 0 if the command is not
	136	* repeatable. If the command is repeatable, the value
	137	* is left unchanged.
34765e88 RG	138	* @param ticks If ticks is not null, this function set it to the
34765e88 RG	139	* number of ticks the command took to complete.
9d12d5d4 SG	140	* @return 0 if the command succeeded, 1 if it failed
	141	*/
	142	int cmd_process(int flag, int argc, char * const argv[],
34765e88	143	int repeatable, unsigned long ticks);
bdf8e34b	144
cbb2df20	145	void fixup_cmdtable(cmd_tbl_t *cmdtp, int size);
f8bb6964 SG	146
	147	/**
	148	* board_run_command() - Fallback function to execute a command
	149	*
	150	* When no command line features are enabled in U-Boot, this function is
	151	* called to execute a command. Typically the function can look at the
	152	* command and perform a few very specific tasks, such as booting the
	153	* system in a particular way.
	154	*
	155	* This function is only used when CONFIG_CMDLINE is not enabled.
	156	*
	157	* In normal situations this function should not return, since U-Boot will
	158	* simply hang.
	159	*
	160	* @cmdline: Command line string to execute
	161	* @return 0 if OK, 1 for error
	162	*/
	163	int board_run_command(const char *cmdline);
78f6622a WD	164	#endif /* __ASSEMBLY__ */
	165
	166	/*
	167	* Command Flags:
	168	*/
	169	#define CMD_FLAG_REPEAT 0x0001 /* repeat last command */
	170	#define CMD_FLAG_BOOTD 0x0002 /* command is from bootd */
87b6398b	171	#define CMD_FLAG_ENV 0x0004 /* command is from the environment */
78f6622a	172
722b061b MF	173	#ifdef CONFIG_AUTO_COMPLETE
	174	# define _CMD_COMPLETE(x) x,
	175	#else
	176	# define _CMD_COMPLETE(x)
	177	#endif
	178	#ifdef CONFIG_SYS_LONGHELP
	179	# define _CMD_HELP(x) x,
	180	#else
	181	# define _CMD_HELP(x)
	182	#endif
8bde7f77	183
fb24112c	184	#ifdef CONFIG_CMDLINE
6c7c946c MV	185	#define U_BOOT_CMD_MKENT_COMPLETE(_name, _maxargs, _rep, _cmd, \
	186	_usage, _help, _comp) \
	187	{ #_name, _maxargs, _rep, _cmd, _usage, \
	188	_CMD_HELP(_help) _CMD_COMPLETE(_comp) }
8bde7f77	189
6c7c946c	190	#define U_BOOT_CMD_COMPLETE(_name, _maxargs, _rep, _cmd, _usage, _help, _comp) \
ef123c52	191	ll_entry_declare(cmd_tbl_t, _name, cmd) = \
6c7c946c MV	192	U_BOOT_CMD_MKENT_COMPLETE(_name, _maxargs, _rep, _cmd, \
6c7c946c MV	193	_usage, _help, _comp);
8bde7f77	194
fb24112c SG	195	#else
	196	#define U_BOOT_SUBCMD_START(name) static cmd_tbl_t name[] = {};
	197	#define U_BOOT_SUBCMD_END
	198
	199	#define _CMD_REMOVE(_name, _cmd) \
	200	int __remove_ ## _name(void) \
	201	{ \
	202	if (0) \
	203	_cmd(NULL, 0, 0, NULL); \
	204	return 0; \
	205	}
	206	#define U_BOOT_CMD_MKENT_COMPLETE(_name, _maxargs, _rep, _cmd, _usage, \
	207	_help, _comp) \
	208	{ #_name, _maxargs, _rep, 0 ? _cmd : NULL, _usage, \
	209	_CMD_HELP(_help) _CMD_COMPLETE(_comp) }
	210
	211	#define U_BOOT_CMD_COMPLETE(_name, _maxargs, _rep, _cmd, _usage, _help, \
	212	_comp) \
	213	_CMD_REMOVE(sub_ ## _name, _cmd)
	214
	215	#endif /* CONFIG_CMDLINE */
	216
6c7c946c MV	217	#define U_BOOT_CMD(_name, _maxargs, _rep, _cmd, _usage, _help) \
6c7c946c MV	218	U_BOOT_CMD_COMPLETE(_name, _maxargs, _rep, _cmd, _usage, _help, NULL)
8bde7f77	219
fb24112c SG	220	#define U_BOOT_CMD_MKENT(_name, _maxargs, _rep, _cmd, _usage, _help) \
	221	U_BOOT_CMD_MKENT_COMPLETE(_name, _maxargs, _rep, _cmd, \
	222	_usage, _help, NULL)
	223
78f6622a	224	#endif /* __COMMAND_H */