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u-boot/include/command.h
Kory Maincent 18c2582183 cmd: pxe_utils: sysboot: Add zboot support to boot x86 Linux kernel image 
Add "zboot" command to the list of supported boot in the
label_boot function.

Signed-off-by: Kory Maincent <kory.maincent@bootlin.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
[bmeng: add component tags in the summary]
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
2021-02-03 23:16:44 +08:00

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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* (C) Copyright 2000-2009
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*/
/*
* Definitions for Command Processor
*/
#ifndef __COMMAND_H
#define __COMMAND_H
#include <env.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 10
#endif
#ifndef __ASSEMBLY__
/*
* Monitor Command Table
*/
struct cmd_tbl {
char *name; /* Command Name */
int maxargs; /* maximum number of arguments */
/*
* Same as ->cmd() except the command
* tells us if it can be repeated.
* Replaces the old ->repeatable field
* which was not able to make
* repeatable property different for
* the main command and sub-commands.
*/
int (*cmd_rep)(struct cmd_tbl *cmd, int flags, int argc,
char *const argv[], int *repeatable);
/* Implementation function */
int (*cmd)(struct cmd_tbl *cmd, int flags, int argc,
char *const argv[]);
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
};
#if defined(CONFIG_CMD_RUN)
int do_run(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[]);
#endif
/* common/command.c */
int _do_help(struct cmd_tbl *cmd_start, int cmd_items, struct cmd_tbl *cmdtp,
int flag, int argc, char *const argv[]);
struct cmd_tbl *find_cmd(const char *cmd);
struct cmd_tbl *find_cmd_tbl(const char *cmd, struct cmd_tbl *table,
int table_len);
int complete_subcmdv(struct cmd_tbl *cmdtp, int count, int argc,
char *const argv[], char last_char, int maxv,
char *cmdv[]);
int cmd_usage(const struct cmd_tbl *cmdtp);
/* Dummy ->cmd and ->cmd_rep wrappers. */
int cmd_always_repeatable(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[], int *repeatable);
int cmd_never_repeatable(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[], int *repeatable);
int cmd_discard_repeatable(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[]);
static inline bool cmd_is_repeatable(struct cmd_tbl *cmdtp)
{
return cmdtp->cmd_rep == cmd_always_repeatable;
}
#ifdef CONFIG_AUTO_COMPLETE
int var_complete(int argc, char *const argv[], char last_char, int maxv,
char *cmdv[]);
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 (CMD_RET_SUCCESS) if there is not error,
* 1 (CMD_RET_FAILURE) if an error is found
* -1 (CMD_RET_USAGE) if 'usage' error is found
*/
int cmd_process_error(struct cmd_tbl *cmdtp, int err);
/*
* Monitor Command
*
* All commands use a common argument format:
*
* void function(struct cmd_tbl *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) || \
defined(CONFIG_CMD_SETEXPR)
#define CMD_DATA_SIZE
#define CMD_DATA_SIZE_ERR (-1)
#define CMD_DATA_SIZE_STR (-2)
/**
* cmd_get_data_size() - Get the data-size specifier from a command
*
* This reads a '.x' size specifier appended to a command. For example 'md.b'
* is the 'md' command with a '.b' specifier, meaning that the command should
* use bytes.
*
* Valid characters are:
*
* b - byte
* w - word (16 bits)
* l - long (32 bits)
* q - quad (64 bits)
* s - string
*
* @arg: Pointers to the command to check. If a valid specifier is present it
* will be the last character of the string, following a '.'
* @default_size: Default size to return if there is no specifier
* @return data size in bytes (1, 2, 4, 8) or CMD_DATA_SIZE_ERR for an invalid
* character, or CMD_DATA_SIZE_STR for a string
*/
int cmd_get_data_size(char *arg, int default_size);
#endif
#ifdef CONFIG_CMD_BOOTD
int do_bootd(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[]);
#endif
#ifdef CONFIG_CMD_BOOTM
int do_bootm(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[]);
int bootm_maybe_autostart(struct cmd_tbl *cmdtp, const char *cmd);
#else
static inline int bootm_maybe_autostart(struct cmd_tbl *cmdtp, const char *cmd)
{
return 0;
}
#endif
int do_bootz(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[]);
int do_booti(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[]);
int do_zboot_parent(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[], int *repeatable);
int common_diskboot(struct cmd_tbl *cmdtp, const char *intf, int argc,
char *const argv[]);
int do_reset(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[]);
int do_poweroff(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[]);
unsigned long do_go_exec(ulong (*entry)(int, char * const []), int argc,
char *const argv[]);
#if defined(CONFIG_CMD_NVEDIT_EFI)
int do_env_print_efi(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[]);
int do_env_set_efi(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[]);
#endif
/**
* setexpr_regex_sub() - Replace a regex pattern with a string
*
* @data: Buffer containing the string to update
* @data_size: Size of buffer (must be large enough for the new string)
* @nbuf: Back-reference buffer
* @nbuf_size: Size of back-reference buffer (must be larger enough for @s plus
* all back-reference expansions)
* @r: Regular expression to find
* @s: String to replace with
* @global: true to replace all matches in @data, false to replace just the
* first
* @return 0 if OK, 1 on error
*/
int setexpr_regex_sub(char *data, uint data_size, char *nbuf, uint nbuf_size,
const char *r, const char *s, bool global);
/*
* 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(struct cmd_tbl *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);
int run_command(const char *cmd, int flag);
int run_command_repeatable(const char *cmd, int flag);
/**
* Run a list of commands separated by ; or even \0
*
* Note that if 'len' is not -1, then the command does not need to be nul
* terminated, Memory will be allocated for the command in that case.
*
* @param cmd List of commands to run, each separated bu semicolon
* @param len Length of commands excluding terminator if known (-1 if not)
* @param flag Execution flags (CMD_FLAG_...)
* @return 0 on success, or != 0 on error.
*/
int run_command_list(const char *cmd, int len, int flag);
#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_NEEDS_MANUAL_RELOC
#define U_BOOT_SUBCMDS_RELOC(_cmdname) \
static void _cmdname##_subcmds_reloc(void) \
{ \
static int relocated; \
\
if (relocated) \
return; \
\
fixup_cmdtable(_cmdname##_subcmds, \
ARRAY_SIZE(_cmdname##_subcmds)); \
relocated = 1; \
}
#else
#define U_BOOT_SUBCMDS_RELOC(_cmdname) \
static void _cmdname##_subcmds_reloc(void) { }
#endif
#define U_BOOT_SUBCMDS_DO_CMD(_cmdname) \
static int do_##_cmdname(struct cmd_tbl *cmdtp, int flag, \
int argc, char *const argv[], \
int *repeatable) \
{ \
struct cmd_tbl *subcmd; \
\
_cmdname##_subcmds_reloc(); \
\
/* We need at least the cmd and subcmd names. */ \
if (argc < 2 || argc > CONFIG_SYS_MAXARGS) \
return CMD_RET_USAGE; \
\
subcmd = find_cmd_tbl(argv[1], _cmdname##_subcmds, \
ARRAY_SIZE(_cmdname##_subcmds)); \
if (!subcmd || argc - 1 > subcmd->maxargs) \
return CMD_RET_USAGE; \
\
if (flag == CMD_FLAG_REPEAT && \
!cmd_is_repeatable(subcmd)) \
return CMD_RET_SUCCESS; \
\
return subcmd->cmd_rep(subcmd, flag, argc - 1, \
argv + 1, repeatable); \
}
#ifdef CONFIG_AUTO_COMPLETE
#define U_BOOT_SUBCMDS_COMPLETE(_cmdname) \
static int complete_##_cmdname(int argc, char *const argv[], \
char last_char, int maxv, \
char *cmdv[]) \
{ \
return complete_subcmdv(_cmdname##_subcmds, \
ARRAY_SIZE(_cmdname##_subcmds), \
argc - 1, argv + 1, last_char, \
maxv, cmdv); \
}
#else
#define U_BOOT_SUBCMDS_COMPLETE(_cmdname)
#endif
#define U_BOOT_SUBCMDS(_cmdname, ...) \
static struct cmd_tbl _cmdname##_subcmds[] = { __VA_ARGS__ }; \
U_BOOT_SUBCMDS_RELOC(_cmdname) \
U_BOOT_SUBCMDS_DO_CMD(_cmdname) \
U_BOOT_SUBCMDS_COMPLETE(_cmdname)
#ifdef CONFIG_CMDLINE
#define U_BOOT_CMDREP_MKENT_COMPLETE(_name, _maxargs, _cmd_rep, \
_usage, _help, _comp) \
{ #_name, _maxargs, _cmd_rep, cmd_discard_repeatable, \
_usage, _CMD_HELP(_help) _CMD_COMPLETE(_comp) }
#define U_BOOT_CMD_MKENT_COMPLETE(_name, _maxargs, _rep, _cmd, \
_usage, _help, _comp) \
{ #_name, _maxargs, \
_rep ? cmd_always_repeatable : cmd_never_repeatable, \
_cmd, _usage, _CMD_HELP(_help) _CMD_COMPLETE(_comp) }
#define U_BOOT_CMD_COMPLETE(_name, _maxargs, _rep, _cmd, _usage, _help, _comp) \
ll_entry_declare(struct cmd_tbl, _name, cmd) = \
U_BOOT_CMD_MKENT_COMPLETE(_name, _maxargs, _rep, _cmd, \
_usage, _help, _comp);
#define U_BOOT_CMDREP_COMPLETE(_name, _maxargs, _cmd_rep, _usage, \
_help, _comp) \
ll_entry_declare(struct cmd_tbl, _name, cmd) = \
U_BOOT_CMDREP_MKENT_COMPLETE(_name, _maxargs, _cmd_rep, \
_usage, _help, _comp)
#else
#define U_BOOT_SUBCMD_START(name) static struct cmd_tbl 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_CMDREP_MKENT_COMPLETE(_name, _maxargs, _cmd_rep, \
_usage, _help, _comp) \
{ #_name, _maxargs, 0 ? _cmd_rep : NULL, NULL, _usage, \
_CMD_HELP(_help) _CMD_COMPLETE(_comp) }
#define U_BOOT_CMD_MKENT_COMPLETE(_name, _maxargs, _rep, _cmd, _usage, \
_help, _comp) \
{ #_name, _maxargs, NULL, 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)
#define U_BOOT_CMDREP_COMPLETE(_name, _maxargs, _cmd_rep, _usage, \
_help, _comp) \
_CMD_REMOVE(sub_ ## _name, _cmd_rep)
#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)
#define U_BOOT_SUBCMD_MKENT_COMPLETE(_name, _maxargs, _rep, _do_cmd, \
_comp) \
U_BOOT_CMD_MKENT_COMPLETE(_name, _maxargs, _rep, _do_cmd, \
"", "", _comp)
#define U_BOOT_SUBCMD_MKENT(_name, _maxargs, _rep, _do_cmd) \
U_BOOT_SUBCMD_MKENT_COMPLETE(_name, _maxargs, _rep, _do_cmd, \
NULL)
#define U_BOOT_CMD_WITH_SUBCMDS(_name, _usage, _help, ...) \
U_BOOT_SUBCMDS(_name, __VA_ARGS__) \
U_BOOT_CMDREP_COMPLETE(_name, CONFIG_SYS_MAXARGS, do_##_name, \
_usage, _help, complete_##_name)
#endif /* __COMMAND_H */
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