include/command.h

   1 /*
   2  * (C) Copyright 2000
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4  *
   5  * See file CREDITS for list of people who contributed to this
   6  * project.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21  * MA 02111-1307 USA
  22  */
  23
  24 /*
  25  *  Definitions for Command Processor
  26  */
  27 #ifndef __COMMAND_H
  28 #define __COMMAND_H
  29
  30 #ifndef NULL
  31 #define NULL    0
  32 #endif
  33
  34 #ifndef __ASSEMBLY__
  35 /*
  36  * Monitor Command Table
  37  */
  38
  39 struct cmd_tbl_s {
  40         char            *name;          /* Command Name                 */
  41         int             maxargs;        /* maximum number of arguments  */
  42         int             repeatable;     /* autorepeat allowed?          */
  43                                         /* Implementation function      */
  44         int             (*cmd)(struct cmd_tbl_s *, int, int, char *[]);
  45         char            *usage;         /* Usage message        (short) */
  46 #ifdef  CFG_LONGHELP
  47         char            *help;          /* Help  message        (long)  */
  48 #endif
  49 #ifdef CONFIG_AUTO_COMPLETE
  50         /* do auto completion on the arguments */
  51         int             (*complete)(int argc, char *argv[], char last_char, int maxv, char *cmdv[]);
  52 #endif
  53 };
  54
  55 typedef struct cmd_tbl_s        cmd_tbl_t;
  56
  57 extern cmd_tbl_t  __u_boot_cmd_start;
  58 extern cmd_tbl_t  __u_boot_cmd_end;
  59
  60
  61 /* common/command.c */
  62 cmd_tbl_t *find_cmd(const char *cmd);
  63
  64 #ifdef CONFIG_AUTO_COMPLETE
  65 extern void install_auto_complete(void);
  66 extern int cmd_auto_complete(const char *const prompt, char *buf, int *np, int *colp);
  67 #endif
  68
  69 /*
  70  * Monitor Command
  71  *
  72  * All commands use a common argument format:
  73  *
  74  * void function (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
  75  */
  76
  77 typedef void    command_t (cmd_tbl_t *, int, int, char *[]);
  78
  79 #endif  /* __ASSEMBLY__ */
  80
  81 /*
  82  * Command Flags:
  83  */
  84 #define CMD_FLAG_REPEAT         0x0001  /* repeat last command          */
  85 #define CMD_FLAG_BOOTD          0x0002  /* command is from bootd        */
  86
  87 #define Struct_Section  __attribute__ ((unused,section (".u_boot_cmd")))
  88
  89 #ifdef  CFG_LONGHELP
  90
  91 #define U_BOOT_CMD(name,maxargs,rep,cmd,usage,help) \
  92 cmd_tbl_t __u_boot_cmd_##name Struct_Section = {#name, maxargs, rep, cmd, usage, help}
  93
  94 #else   /* no long help info */
  95
  96 #define U_BOOT_CMD(name,maxargs,rep,cmd,usage,help) \
  97 cmd_tbl_t __u_boot_cmd_##name Struct_Section = {#name, maxargs, rep, cmd, usage}
  98
  99 #endif  /* CFG_LONGHELP */
 100
 101 #endif  /* __COMMAND_H */