mirror of
https://github.com/AsahiLinux/u-boot
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185f812c41
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find . -name '*.c' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;
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Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
441 lines
14 KiB
C
441 lines
14 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* (C) Copyright 2000-2009
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*/
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/*
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* Definitions for Command Processor
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*/
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#ifndef __COMMAND_H
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#define __COMMAND_H
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#include <env.h>
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#include <linker_lists.h>
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#ifndef NULL
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#define NULL 0
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#endif
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/* Default to a width of 8 characters for help message command width */
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#ifndef CONFIG_SYS_HELP_CMD_WIDTH
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#define CONFIG_SYS_HELP_CMD_WIDTH 10
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#endif
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#ifndef __ASSEMBLY__
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/*
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* Monitor Command Table
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*/
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struct cmd_tbl {
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char *name; /* Command Name */
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int maxargs; /* maximum number of arguments */
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/*
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* Same as ->cmd() except the command
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* tells us if it can be repeated.
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* Replaces the old ->repeatable field
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* which was not able to make
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* repeatable property different for
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* the main command and sub-commands.
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*/
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int (*cmd_rep)(struct cmd_tbl *cmd, int flags, int argc,
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char *const argv[], int *repeatable);
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/* Implementation function */
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int (*cmd)(struct cmd_tbl *cmd, int flags, int argc,
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char *const argv[]);
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char *usage; /* Usage message (short) */
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#ifdef CONFIG_SYS_LONGHELP
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const char *help; /* Help message (long) */
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#endif
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#ifdef CONFIG_AUTO_COMPLETE
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/* do auto completion on the arguments */
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int (*complete)(int argc, char *const argv[],
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char last_char, int maxv, char *cmdv[]);
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#endif
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};
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#if defined(CONFIG_CMD_RUN)
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int do_run(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[]);
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#endif
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/* common/command.c */
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int _do_help(struct cmd_tbl *cmd_start, int cmd_items, struct cmd_tbl *cmdtp,
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int flag, int argc, char *const argv[]);
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struct cmd_tbl *find_cmd(const char *cmd);
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struct cmd_tbl *find_cmd_tbl(const char *cmd, struct cmd_tbl *table,
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int table_len);
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int complete_subcmdv(struct cmd_tbl *cmdtp, int count, int argc,
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char *const argv[], char last_char, int maxv,
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char *cmdv[]);
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int cmd_usage(const struct cmd_tbl *cmdtp);
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/* Dummy ->cmd and ->cmd_rep wrappers. */
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int cmd_always_repeatable(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[], int *repeatable);
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int cmd_never_repeatable(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[], int *repeatable);
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int cmd_discard_repeatable(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[]);
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static inline bool cmd_is_repeatable(struct cmd_tbl *cmdtp)
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{
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return cmdtp->cmd_rep == cmd_always_repeatable;
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}
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#ifdef CONFIG_AUTO_COMPLETE
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int var_complete(int argc, char *const argv[], char last_char, int maxv,
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char *cmdv[]);
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int cmd_auto_complete(const char *const prompt, char *buf, int *np,
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int *colp);
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#endif
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/**
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* cmd_process_error() - report and process a possible error
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*
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* @cmdtp: Command which caused the error
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* @err: Error code (0 if none, -ve for error, like -EIO)
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* Return: 0 (CMD_RET_SUCCESS) if there is not error,
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* 1 (CMD_RET_FAILURE) if an error is found
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* -1 (CMD_RET_USAGE) if 'usage' error is found
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*/
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int cmd_process_error(struct cmd_tbl *cmdtp, int err);
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/*
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* Monitor Command
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*
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* All commands use a common argument format:
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*
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* void function(struct cmd_tbl *cmdtp, int flag, int argc,
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* char *const argv[]);
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*/
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#if defined(CONFIG_CMD_MEMORY) || \
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defined(CONFIG_CMD_I2C) || \
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defined(CONFIG_CMD_ITEST) || \
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defined(CONFIG_CMD_PCI) || \
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defined(CONFIG_CMD_SETEXPR)
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#define CMD_DATA_SIZE
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#define CMD_DATA_SIZE_ERR (-1)
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#define CMD_DATA_SIZE_STR (-2)
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/**
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* cmd_get_data_size() - Get the data-size specifier from a command
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*
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* This reads a '.x' size specifier appended to a command. For example 'md.b'
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* is the 'md' command with a '.b' specifier, meaning that the command should
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* use bytes.
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*
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* Valid characters are:
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*
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* b - byte
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* w - word (16 bits)
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* l - long (32 bits)
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* q - quad (64 bits)
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* s - string
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*
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* @arg: Pointers to the command to check. If a valid specifier is present it
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* will be the last character of the string, following a '.'
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* @default_size: Default size to return if there is no specifier
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* Return: data size in bytes (1, 2, 4, 8) or CMD_DATA_SIZE_ERR for an invalid
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* character, or CMD_DATA_SIZE_STR for a string
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*/
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int cmd_get_data_size(char *arg, int default_size);
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#endif
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#ifdef CONFIG_CMD_BOOTD
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int do_bootd(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[]);
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#endif
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#ifdef CONFIG_CMD_BOOTM
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int do_bootm(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[]);
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int bootm_maybe_autostart(struct cmd_tbl *cmdtp, const char *cmd);
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#else
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static inline int bootm_maybe_autostart(struct cmd_tbl *cmdtp, const char *cmd)
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{
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return 0;
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}
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#endif
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int do_bootz(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[]);
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int do_booti(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[]);
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int do_zboot_parent(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[], int *repeatable);
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int common_diskboot(struct cmd_tbl *cmdtp, const char *intf, int argc,
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char *const argv[]);
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int do_reset(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[]);
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int do_poweroff(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[]);
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unsigned long do_go_exec(ulong (*entry)(int, char * const []), int argc,
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char *const argv[]);
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#if defined(CONFIG_CMD_NVEDIT_EFI)
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int do_env_print_efi(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[]);
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int do_env_set_efi(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[]);
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#endif
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/**
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* setexpr_regex_sub() - Replace a regex pattern with a string
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*
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* @data: Buffer containing the string to update
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* @data_size: Size of buffer (must be large enough for the new string)
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* @nbuf: Back-reference buffer
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* @nbuf_size: Size of back-reference buffer (must be larger enough for @s plus
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* all back-reference expansions)
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* @r: Regular expression to find
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* @s: String to replace with
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* @global: true to replace all matches in @data, false to replace just the
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* first
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* Return: 0 if OK, 1 on error
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*/
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int setexpr_regex_sub(char *data, uint data_size, char *nbuf, uint nbuf_size,
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const char *r, const char *s, bool global);
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/*
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* Error codes that commands return to cmd_process(). We use the standard 0
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* and 1 for success and failure, but add one more case - failure with a
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* request to call cmd_usage(). But the cmd_process() function handles
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* CMD_RET_USAGE itself and after calling cmd_usage() it will return 1.
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* This is just a convenience for commands to avoid them having to call
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* cmd_usage() all over the place.
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*/
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enum command_ret_t {
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CMD_RET_SUCCESS, /* 0 = Success */
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CMD_RET_FAILURE, /* 1 = Failure */
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CMD_RET_USAGE = -1, /* Failure, please report 'usage' error */
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};
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/**
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* Process a command with arguments. We look up the command and execute it
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* if valid. Otherwise we print a usage message.
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*
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* @param flag Some flags normally 0 (see CMD_FLAG_.. above)
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* @param argc Number of arguments (arg 0 must be the command text)
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* @param argv Arguments
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* @param repeatable This function sets this to 0 if the command is not
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* repeatable. If the command is repeatable, the value
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* is left unchanged.
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* @param ticks If ticks is not null, this function set it to the
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* number of ticks the command took to complete.
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* Return: 0 if the command succeeded, 1 if it failed
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*/
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int cmd_process(int flag, int argc, char *const argv[], int *repeatable,
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unsigned long *ticks);
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void fixup_cmdtable(struct cmd_tbl *cmdtp, int size);
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/**
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* board_run_command() - Fallback function to execute a command
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*
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* When no command line features are enabled in U-Boot, this function is
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* called to execute a command. Typically the function can look at the
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* command and perform a few very specific tasks, such as booting the
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* system in a particular way.
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*
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* This function is only used when CONFIG_CMDLINE is not enabled.
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*
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* In normal situations this function should not return, since U-Boot will
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* simply hang.
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*
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* @cmdline: Command line string to execute
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* Return: 0 if OK, 1 for error
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*/
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int board_run_command(const char *cmdline);
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int run_command(const char *cmd, int flag);
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int run_command_repeatable(const char *cmd, int flag);
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/**
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* Run a list of commands separated by ; or even \0
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*
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* Note that if 'len' is not -1, then the command does not need to be nul
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* terminated, Memory will be allocated for the command in that case.
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*
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* @param cmd List of commands to run, each separated bu semicolon
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* @param len Length of commands excluding terminator if known (-1 if not)
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* @param flag Execution flags (CMD_FLAG_...)
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* Return: 0 on success, or != 0 on error.
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*/
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int run_command_list(const char *cmd, int len, int flag);
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#endif /* __ASSEMBLY__ */
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/*
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* Command Flags:
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*/
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#define CMD_FLAG_REPEAT 0x0001 /* repeat last command */
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#define CMD_FLAG_BOOTD 0x0002 /* command is from bootd */
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#define CMD_FLAG_ENV 0x0004 /* command is from the environment */
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#ifdef CONFIG_AUTO_COMPLETE
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# define _CMD_COMPLETE(x) x,
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#else
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# define _CMD_COMPLETE(x)
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#endif
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#ifdef CONFIG_SYS_LONGHELP
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# define _CMD_HELP(x) x,
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#else
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# define _CMD_HELP(x)
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#endif
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#ifdef CONFIG_NEEDS_MANUAL_RELOC
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#define U_BOOT_SUBCMDS_RELOC(_cmdname) \
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static void _cmdname##_subcmds_reloc(void) \
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{ \
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static int relocated; \
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\
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if (relocated) \
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return; \
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\
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fixup_cmdtable(_cmdname##_subcmds, \
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ARRAY_SIZE(_cmdname##_subcmds)); \
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relocated = 1; \
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}
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#else
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#define U_BOOT_SUBCMDS_RELOC(_cmdname) \
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static void _cmdname##_subcmds_reloc(void) { }
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#endif
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#define U_BOOT_SUBCMDS_DO_CMD(_cmdname) \
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static int do_##_cmdname(struct cmd_tbl *cmdtp, int flag, \
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int argc, char *const argv[], \
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int *repeatable) \
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{ \
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struct cmd_tbl *subcmd; \
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\
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_cmdname##_subcmds_reloc(); \
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\
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/* We need at least the cmd and subcmd names. */ \
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if (argc < 2 || argc > CONFIG_SYS_MAXARGS) \
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return CMD_RET_USAGE; \
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\
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subcmd = find_cmd_tbl(argv[1], _cmdname##_subcmds, \
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ARRAY_SIZE(_cmdname##_subcmds)); \
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if (!subcmd || argc - 1 > subcmd->maxargs) \
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return CMD_RET_USAGE; \
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\
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if (flag == CMD_FLAG_REPEAT && \
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!cmd_is_repeatable(subcmd)) \
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return CMD_RET_SUCCESS; \
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\
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return subcmd->cmd_rep(subcmd, flag, argc - 1, \
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argv + 1, repeatable); \
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}
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#ifdef CONFIG_AUTO_COMPLETE
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#define U_BOOT_SUBCMDS_COMPLETE(_cmdname) \
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static int complete_##_cmdname(int argc, char *const argv[], \
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char last_char, int maxv, \
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char *cmdv[]) \
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{ \
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return complete_subcmdv(_cmdname##_subcmds, \
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ARRAY_SIZE(_cmdname##_subcmds), \
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argc - 1, argv + 1, last_char, \
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maxv, cmdv); \
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}
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#else
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#define U_BOOT_SUBCMDS_COMPLETE(_cmdname)
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#endif
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#define U_BOOT_SUBCMDS(_cmdname, ...) \
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static struct cmd_tbl _cmdname##_subcmds[] = { __VA_ARGS__ }; \
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U_BOOT_SUBCMDS_RELOC(_cmdname) \
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U_BOOT_SUBCMDS_DO_CMD(_cmdname) \
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U_BOOT_SUBCMDS_COMPLETE(_cmdname)
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#ifdef CONFIG_CMDLINE
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#define U_BOOT_CMDREP_MKENT_COMPLETE(_name, _maxargs, _cmd_rep, \
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_usage, _help, _comp) \
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{ #_name, _maxargs, _cmd_rep, cmd_discard_repeatable, \
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_usage, _CMD_HELP(_help) _CMD_COMPLETE(_comp) }
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#define U_BOOT_CMD_MKENT_COMPLETE(_name, _maxargs, _rep, _cmd, \
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_usage, _help, _comp) \
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{ #_name, _maxargs, \
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_rep ? cmd_always_repeatable : cmd_never_repeatable, \
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_cmd, _usage, _CMD_HELP(_help) _CMD_COMPLETE(_comp) }
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#define U_BOOT_CMD_COMPLETE(_name, _maxargs, _rep, _cmd, _usage, _help, _comp) \
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ll_entry_declare(struct cmd_tbl, _name, cmd) = \
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U_BOOT_CMD_MKENT_COMPLETE(_name, _maxargs, _rep, _cmd, \
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_usage, _help, _comp);
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#define U_BOOT_CMDREP_COMPLETE(_name, _maxargs, _cmd_rep, _usage, \
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_help, _comp) \
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ll_entry_declare(struct cmd_tbl, _name, cmd) = \
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U_BOOT_CMDREP_MKENT_COMPLETE(_name, _maxargs, _cmd_rep, \
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_usage, _help, _comp)
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#else
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#define U_BOOT_SUBCMD_START(name) static struct cmd_tbl name[] = {};
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#define U_BOOT_SUBCMD_END
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#define _CMD_REMOVE(_name, _cmd) \
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int __remove_ ## _name(void) \
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{ \
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if (0) \
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_cmd(NULL, 0, 0, NULL); \
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return 0; \
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}
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#define _CMD_REMOVE_REP(_name, _cmd) \
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int __remove_ ## _name(void) \
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{ \
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if (0) \
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_cmd(NULL, 0, 0, NULL, NULL); \
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return 0; \
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}
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#define U_BOOT_CMDREP_MKENT_COMPLETE(_name, _maxargs, _cmd_rep, \
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_usage, _help, _comp) \
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{ #_name, _maxargs, 0 ? _cmd_rep : NULL, NULL, _usage, \
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_CMD_HELP(_help) _CMD_COMPLETE(_comp) }
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#define U_BOOT_CMD_MKENT_COMPLETE(_name, _maxargs, _rep, _cmd, _usage, \
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_help, _comp) \
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{ #_name, _maxargs, NULL, 0 ? _cmd : NULL, _usage, \
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_CMD_HELP(_help) _CMD_COMPLETE(_comp) }
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#define U_BOOT_CMD_COMPLETE(_name, _maxargs, _rep, _cmd, _usage, _help, \
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_comp) \
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_CMD_REMOVE(sub_ ## _name, _cmd)
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#define U_BOOT_CMDREP_COMPLETE(_name, _maxargs, _cmd_rep, _usage, \
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_help, _comp) \
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_CMD_REMOVE_REP(sub_ ## _name, _cmd_rep)
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#endif /* CONFIG_CMDLINE */
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#define U_BOOT_CMD(_name, _maxargs, _rep, _cmd, _usage, _help) \
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U_BOOT_CMD_COMPLETE(_name, _maxargs, _rep, _cmd, _usage, _help, NULL)
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#define U_BOOT_CMD_MKENT(_name, _maxargs, _rep, _cmd, _usage, _help) \
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U_BOOT_CMD_MKENT_COMPLETE(_name, _maxargs, _rep, _cmd, \
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_usage, _help, NULL)
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#define U_BOOT_SUBCMD_MKENT_COMPLETE(_name, _maxargs, _rep, _do_cmd, \
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_comp) \
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U_BOOT_CMD_MKENT_COMPLETE(_name, _maxargs, _rep, _do_cmd, \
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"", "", _comp)
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#define U_BOOT_SUBCMD_MKENT(_name, _maxargs, _rep, _do_cmd) \
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U_BOOT_SUBCMD_MKENT_COMPLETE(_name, _maxargs, _rep, _do_cmd, \
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NULL)
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#define U_BOOT_CMD_WITH_SUBCMDS(_name, _usage, _help, ...) \
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U_BOOT_SUBCMDS(_name, __VA_ARGS__) \
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U_BOOT_CMDREP_COMPLETE(_name, CONFIG_SYS_MAXARGS, do_##_name, \
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_usage, _help, complete_##_name)
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#endif /* __COMMAND_H */
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