[z180-stamp.git] / include / command.h

/*
 * (C) Copyright 2014-2016 Leo C. <erbl259-lmu@yahoo.de>
 *
 * (C) Copyright 2000-2009
 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 *
 * SPDX-License-Identifier:	GPL-2.0
 */

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

#include "common.h"
#include "config.h"
#include <setjmp.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

/*
 * 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.
 */
typedef enum {
	CMD_RET_SUCCESS = 0,	/* Success */
	CMD_RET_FAILURE = 1,	/* Failure */
	CMD_RET_USAGE = -1,	/* Failure, please report 'usage' error */
} command_ret_t;

/*
 * Monitor Command Table
 */

struct cmd_tbl_s {
	const FLASH char *name;		/* Command Name			*/
	int		maxargs;			/* maximum number of arguments	*/
	int		repeatable;			/* autorepeat allowed?		*/
								/* Implementation function	*/
	command_ret_t	(*cmd)(const FLASH struct cmd_tbl_s *, int, int, char * const []);
	const FLASH char *usage;	/* Usage message	(short)	*/
#ifdef	CONFIG_SYS_LONGHELP
	const FLASH 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 const FLASH struct cmd_tbl_s cmd_tbl_t;

/**
 * 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.
 * @return 0 if the command succeeded, 1 if it failed
 */
command_ret_t
cmd_process(int flag, int argc, char * const argv[], uint_fast8_t *repeatable);


/* command.c */
command_ret_t _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 cmd_tbl_item_count(void);
command_ret_t cmd_usage(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 FLASH 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[]);
 */


#ifdef CONFIG_CMD_BOOTD
extern command_ret_t do_bootd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
#endif
#ifdef CONFIG_CMD_BOOTM
extern command_ret_t 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)
{
	(void) cmdtp; (void) cmd;

	return 0;
}
#endif

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

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

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

#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


#define CMD_TBL_ITEM_COMPLETE(_name, _maxargs, _rep, _cmd,		\
				_usage, _help, _comp)			\
		{ FSTR(#_name), _maxargs, _rep, _cmd, FSTR(_usage),	\
			_CMD_HELP(FSTR(_help)) _CMD_COMPLETE(_comp) }

#define CMD_TBL_ITEM(_name, _maxargs, _rep, _cmd, _usage, _help)	\
	CMD_TBL_ITEM_COMPLETE(_name, _maxargs, _rep, _cmd,		\
					_usage, _help, NULL)

typedef command_ret_t (*do_cmd_t)(cmd_tbl_t *, int, int, char * const []);

extern  cmd_tbl_t cmd_tbl[];

extern jmp_buf cmd_jbuf;


#endif	/* __COMMAND_H */
Commit	Line	Data
35edb766	1	/*
04b3ea0e	2	* (C) Copyright 2014-2016 Leo C. <erbl259-lmu@yahoo.de>
35edb766 L	3	*
	4	* (C) Copyright 2000-2009
	5	* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
	6	*
04b3ea0e	7	* SPDX-License-Identifier: GPL-2.0
35edb766	8	*/
d684c216 L	9
	10	/*
	11	* Definitions for Command Processor
	12	*/
	13	#ifndef __COMMAND_H
	14	#define __COMMAND_H
	15
	16	#include "common.h"
	17	#include "config.h"
fcd2239e	18	#include <setjmp.h>
d684c216 L	19
	20	#ifndef NULL
	21	#define NULL 0
	22	#endif
	23
	24	/* Default to a width of 8 characters for help message command width */
	25	#ifndef CONFIG_SYS_HELP_CMD_WIDTH
	26	#define CONFIG_SYS_HELP_CMD_WIDTH 8
	27	#endif
	28
d0581f88 L	29	/*
	30	* Error codes that commands return to cmd_process(). We use the standard 0
	31	* and 1 for success and failure, but add one more case - failure with a
	32	* request to call cmd_usage(). But the cmd_process() function handles
	33	* CMD_RET_USAGE itself and after calling cmd_usage() it will return 1.
	34	* This is just a convenience for commands to avoid them having to call
	35	* cmd_usage() all over the place.
	36	*/
	37	typedef enum {
889202c4 L	38	CMD_RET_SUCCESS = 0, /* Success */
889202c4 L	39	CMD_RET_FAILURE = 1, /* Failure */
d0581f88 L	40	CMD_RET_USAGE = -1, /* Failure, please report 'usage' error */
	41	} command_ret_t;
	42
d684c216 L	43	/*
	44	* Monitor Command Table
	45	*/
	46
	47	struct cmd_tbl_s {
	48	const FLASH char name; / Command Name */
35edb766 L	49	int maxargs; /* maximum number of arguments */
	50	int repeatable; /* autorepeat allowed? */
	51	/* Implementation function */
d0581f88	52	command_ret_t (cmd)(const FLASH struct cmd_tbl_s , int, int, char * const []);
35edb766	53	const FLASH char usage; / Usage message (short) */
d684c216 L	54	#ifdef CONFIG_SYS_LONGHELP
	55	const FLASH char help; / Help message (long) */
	56	#endif
	57	#ifdef CONFIG_AUTO_COMPLETE
	58	/* do auto completion on the arguments */
	59	int (complete)(int argc, char const argv[], char last_char, int maxv, char *cmdv[]);
	60	#endif
	61	};
	62
	63	typedef const FLASH struct cmd_tbl_s cmd_tbl_t;
	64
d0581f88 L	65	/**
	66	* Process a command with arguments. We look up the command and execute it
	67	* if valid. Otherwise we print a usage message.
	68	*
	69	* @param flag Some flags normally 0 (see CMD_FLAG_.. above)
	70	* @param argc Number of arguments (arg 0 must be the command text)
	71	* @param argv Arguments
	72	* @param repeatable This function sets this to 0 if the command is not
	73	* repeatable. If the command is repeatable, the value
	74	* is left unchanged.
	75	* @return 0 if the command succeeded, 1 if it failed
	76	*/
	77	command_ret_t
	78	cmd_process(int flag, int argc, char * const argv[], uint_fast8_t *repeatable);
	79
d684c216 L	80
d684c216 L	81	/* command.c */
d0581f88	82	command_ret_t _do_help (cmd_tbl_t cmd_start, int cmd_items, cmd_tbl_t cmdtp, int
d684c216 L	83	flag, int argc, char * const argv[]);
	84	cmd_tbl_t find_cmd(const char cmd);
	85	cmd_tbl_t find_cmd_tbl (const char cmd, cmd_tbl_t *table, int table_len);
	86
	87	int cmd_tbl_item_count(void);
d0581f88	88	command_ret_t cmd_usage(cmd_tbl_t *cmdtp);
d684c216 L	89
	90	#ifdef CONFIG_AUTO_COMPLETE
	91	extern int var_complete(int argc, char * const argv[], char last_char, int maxv, char *cmdv[]);
dea9a315	92	extern int cmd_auto_complete(const FLASH char const prompt, char buf, int np, int colp);
d684c216 L	93	#endif
	94
	95	/**
	96	* cmd_process_error() - report and process a possible error
	97	*
	98	* @cmdtp: Command which caused the error
	99	* @err: Error code (0 if none, -ve for error, like -EIO)
	100	* @return 0 if there is not error, 1 (CMD_RET_FAILURE) if an error is found
	101	*/
	102	int cmd_process_error(cmd_tbl_t *cmdtp, int err);
	103
	104	/*
	105	* Monitor Command
	106	*
	107	* All commands use a common argument format:
	108	*
	109	* void function (cmd_tbl_t cmdtp, int flag, int argc, char const argv[]);
	110	*/
	111
	112
	113	#ifdef CONFIG_CMD_BOOTD
d0581f88	114	extern command_ret_t do_bootd(cmd_tbl_t cmdtp, int flag, int argc, char const argv[]);
d684c216 L	115	#endif
d684c216 L	116	#ifdef CONFIG_CMD_BOOTM
d0581f88	117	extern command_ret_t do_bootm(cmd_tbl_t cmdtp, int flag, int argc, char const argv[]);
d684c216 L	118	extern int bootm_maybe_autostart(cmd_tbl_t cmdtp, const char cmd);
	119	#else
	120	static inline int bootm_maybe_autostart(cmd_tbl_t cmdtp, const char cmd)
	121	{
	122	(void) cmdtp; (void) cmd;
	123
	124	return 0;
	125	}
	126	#endif
	127
	128	extern int common_diskboot(cmd_tbl_t cmdtp, const char intf, int argc,
	129	char *const argv[]);
	130
d0581f88	131	extern command_ret_t do_reset(cmd_tbl_t cmdtp, int flag, int argc, char const argv[]);
d684c216 L	132
	133	/*
	134	* Command Flags:
	135	*/
	136	#define CMD_FLAG_REPEAT 0x0001 /* repeat last command */
	137	#define CMD_FLAG_BOOTD 0x0002 /* command is from bootd */
	138
	139	#ifdef CONFIG_AUTO_COMPLETE
	140	# define _CMD_COMPLETE(x) x,
	141	#else
	142	# define _CMD_COMPLETE(x)
	143	#endif
	144	#ifdef CONFIG_SYS_LONGHELP
	145	# define _CMD_HELP(x) x,
	146	#else
	147	# define _CMD_HELP(x)
	148	#endif
	149
	150
	151	#define CMD_TBL_ITEM_COMPLETE(_name, _maxargs, _rep, _cmd, \
	152	_usage, _help, _comp) \
	153	{ FSTR(#_name), _maxargs, _rep, _cmd, FSTR(_usage), \
	154	_CMD_HELP(FSTR(_help)) _CMD_COMPLETE(_comp) }
	155
	156	#define CMD_TBL_ITEM(_name, _maxargs, _rep, _cmd, _usage, _help) \
	157	CMD_TBL_ITEM_COMPLETE(_name, _maxargs, _rep, _cmd, \
	158	_usage, _help, NULL)
	159
d0581f88	160	typedef command_ret_t (do_cmd_t)(cmd_tbl_t , int, int, char * const []);
d684c216 L	161
	162	extern cmd_tbl_t cmd_tbl[];
	163
fcd2239e L	164	extern jmp_buf cmd_jbuf;
fcd2239e L	165
d684c216 L	166
d684c216 L	167	#endif /* __COMMAND_H */