include/command.h

   1 /*
   2  * (C) Copyright 2000-2009
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 /*
   9  *  Definitions for Command Processor
  10  */
  11 #ifndef __COMMAND_H
  12 #define __COMMAND_H
  13
  14 #include <config.h>
  15 #include <linker_lists.h>
  16
  17 #ifndef NULL
  18 #define NULL    0
  19 #endif
  20
  21 /* Default to a width of 8 characters for help message command width */
  22 #ifndef CONFIG_SYS_HELP_CMD_WIDTH
  23 #define CONFIG_SYS_HELP_CMD_WIDTH       8
  24 #endif
  25
  26 #ifndef __ASSEMBLY__
  27 /*
  28  * Monitor Command Table
  29  */
  30
  31 struct cmd_tbl_s {
  32         char            *name;          /* Command Name                 */
  33         int             maxargs;        /* maximum number of arguments  */
  34         int             repeatable;     /* autorepeat allowed?          */
  35                                         /* Implementation function      */
  36         int             (*cmd)(struct cmd_tbl_s *, int, int, char * const []);
  37         char            *usage;         /* Usage message        (short) */
  38 #ifdef  CONFIG_SYS_LONGHELP
  39         char            *help;          /* Help  message        (long)  */
  40 #endif
  41 #ifdef CONFIG_AUTO_COMPLETE
  42         /* do auto completion on the arguments */
  43         int             (*complete)(int argc, char * const argv[], char last_char, int maxv, char *cmdv[]);
  44 #endif
  45 };
  46
  47 typedef struct cmd_tbl_s        cmd_tbl_t;
  48
  49
  50 #if defined(CONFIG_CMD_RUN)
  51 extern int do_run(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
  52 #endif
  53
  54 /* common/command.c */
  55 int _do_help (cmd_tbl_t *cmd_start, int cmd_items, cmd_tbl_t * cmdtp, int
  56               flag, int argc, char * const argv[]);
  57 cmd_tbl_t *find_cmd(const char *cmd);
  58 cmd_tbl_t *find_cmd_tbl (const char *cmd, cmd_tbl_t *table, int table_len);
  59
  60 extern int cmd_usage(const cmd_tbl_t *cmdtp);
  61
  62 #ifdef CONFIG_AUTO_COMPLETE
  63 extern int var_complete(int argc, char * const argv[], char last_char, int maxv, char *cmdv[]);
  64 extern int cmd_auto_complete(const char *const prompt, char *buf, int *np, int *colp);
  65 #endif
  66
  67 /*
  68  * Monitor Command
  69  *
  70  * All commands use a common argument format:
  71  *
  72  * void function (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
  73  */
  74
  75 #if defined(CONFIG_CMD_MEMORY)          \
  76         || defined(CONFIG_CMD_I2C)      \
  77         || defined(CONFIG_CMD_ITEST)    \
  78         || defined(CONFIG_CMD_PCI)      \
  79         || defined(CONFIG_CMD_PORTIO)
  80 #define CMD_DATA_SIZE
  81 extern int cmd_get_data_size(char* arg, int default_size);
  82 #endif
  83
  84 #ifdef CONFIG_CMD_BOOTD
  85 extern int do_bootd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
  86 #endif
  87 #ifdef CONFIG_CMD_BOOTM
  88 extern int do_bootm(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
  89 extern int bootm_maybe_autostart(cmd_tbl_t *cmdtp, const char *cmd);
  90 #else
  91 static inline int bootm_maybe_autostart(cmd_tbl_t *cmdtp, const char *cmd)
  92 {
  93         return 0;
  94 }
  95 #endif
  96
  97 extern int do_bootz(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
  98
  99 extern int common_diskboot(cmd_tbl_t *cmdtp, const char *intf, int argc,
 100                            char *const argv[]);
 101
 102 extern int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
 103
 104 /*
 105  * Error codes that commands return to cmd_process(). We use the standard 0
 106  * and 1 for success and failure, but add one more case - failure with a
 107  * request to call cmd_usage(). But the cmd_process() function handles
 108  * CMD_RET_USAGE itself and after calling cmd_usage() it will return 1.
 109  * This is just a convenience for commands to avoid them having to call
 110  * cmd_usage() all over the place.
 111  */
 112 enum command_ret_t {
 113         CMD_RET_SUCCESS,        /* 0 = Success */
 114         CMD_RET_FAILURE,        /* 1 = Failure */
 115         CMD_RET_USAGE = -1,     /* Failure, please report 'usage' error */
 116 };
 117
 118 /**
 119  * Process a command with arguments. We look up the command and execute it
 120  * if valid. Otherwise we print a usage message.
 121  *
 122  * @param flag          Some flags normally 0 (see CMD_FLAG_.. above)
 123  * @param argc          Number of arguments (arg 0 must be the command text)
 124  * @param argv          Arguments
 125  * @param repeatable    This function sets this to 0 if the command is not
 126  *                      repeatable. If the command is repeatable, the value
 127  *                      is left unchanged.
 128  * @param ticks         If ticks is not null, this function set it to the
 129  *                      number of ticks the command took to complete.
 130  * @return 0 if the command succeeded, 1 if it failed
 131  */
 132 int cmd_process(int flag, int argc, char * const argv[],
 133                                int *repeatable, unsigned long *ticks);
 134
 135 #endif  /* __ASSEMBLY__ */
 136
 137 /*
 138  * Command Flags:
 139  */
 140 #define CMD_FLAG_REPEAT         0x0001  /* repeat last command          */
 141 #define CMD_FLAG_BOOTD          0x0002  /* command is from bootd        */
 142
 143 #ifdef CONFIG_AUTO_COMPLETE
 144 # define _CMD_COMPLETE(x) x,
 145 #else
 146 # define _CMD_COMPLETE(x)
 147 #endif
 148 #ifdef CONFIG_SYS_LONGHELP
 149 # define _CMD_HELP(x) x,
 150 #else
 151 # define _CMD_HELP(x)
 152 #endif
 153
 154 #define U_BOOT_CMD_MKENT_COMPLETE(_name, _maxargs, _rep, _cmd,          \
 155                                 _usage, _help, _comp)                   \
 156                 { #_name, _maxargs, _rep, _cmd, _usage,                 \
 157                         _CMD_HELP(_help) _CMD_COMPLETE(_comp) }
 158
 159 #define U_BOOT_CMD_MKENT(_name, _maxargs, _rep, _cmd, _usage, _help)    \
 160         U_BOOT_CMD_MKENT_COMPLETE(_name, _maxargs, _rep, _cmd,          \
 161                                         _usage, _help, NULL)
 162
 163 #define U_BOOT_CMD_COMPLETE(_name, _maxargs, _rep, _cmd, _usage, _help, _comp) \
 164         ll_entry_declare(cmd_tbl_t, _name, cmd) =                       \
 165                 U_BOOT_CMD_MKENT_COMPLETE(_name, _maxargs, _rep, _cmd,  \
 166                                                 _usage, _help, _comp);
 167
 168 #define U_BOOT_CMD(_name, _maxargs, _rep, _cmd, _usage, _help)          \
 169         U_BOOT_CMD_COMPLETE(_name, _maxargs, _rep, _cmd, _usage, _help, NULL)
 170
 171 #if defined(CONFIG_NEEDS_MANUAL_RELOC)
 172 void fixup_cmdtable(cmd_tbl_t *cmdtp, int size);
 173 #endif
 174
 175 #endif  /* __COMMAND_H */