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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* (C) Copyright 2014 Google, Inc
* Simon Glass <sjg@chromium.org>
*/
#ifndef __CLI_H
#define __CLI_H
/**
* Go into the command loop
*
* This will return if we get a timeout waiting for a command. See
* CONFIG_BOOT_RETRY_TIME.
*/
void cli_simple_loop(void);
/**
* cli_simple_run_command() - Execute a command with the simple CLI
*
* @cmd: String containing the command to execute
* @flag Flag value - see CMD_FLAG_...
* @return 1 - command executed, repeatable
* 0 - command executed but not repeatable, interrupted commands are
* always considered not repeatable
* -1 - not executed (unrecognized, bootd recursion or too many args)
* (If cmd is NULL or "" or longer than CONFIG_SYS_CBSIZE-1 it is
* considered unrecognized)
*/
int cli_simple_run_command(const char *cmd, int flag);
/**
* cli_simple_process_macros() - Expand $() and ${} format env. variables
*
* @param input Input string possible containing $() / ${} vars
* @param output Output string with $() / ${} vars expanded
*/
void cli_simple_process_macros(const char *input, char *output);
/**
* cli_simple_run_command_list() - Execute a list of command
*
* The commands should be separated by ; or \n and will be executed
* by the built-in parser.
*
* This function cannot take a const char * for the command, since if it
* finds newlines in the string, it replaces them with \0.
*
* @param cmd String containing list of commands
* @param flag Execution flags (CMD_FLAG_...)
* @return 0 on success, or != 0 on error.
*/
int cli_simple_run_command_list(char *cmd, int flag);
/**
* cli_readline() - read a line into the console_buffer
*
* This is a convenience function which calls cli_readline_into_buffer().
*
* @prompt: Prompt to display
* @return command line length excluding terminator, or -ve on error
*/
int cli_readline(const char *const prompt);
/**
* readline_into_buffer() - read a line into a buffer
*
* Display the prompt, then read a command line into @buffer. The
* maximum line length is CONFIG_SYS_CBSIZE including a \0 terminator, which
* will always be added.
*
* The command is echoed as it is typed. Command editing is supported if
* CONFIG_CMDLINE_EDITING is defined. Tab auto-complete is supported if
* CONFIG_AUTO_COMPLETE is defined. If CONFIG_BOOT_RETRY_TIME is defined,
* then a timeout will be applied.
*
* If CONFIG_BOOT_RETRY_TIME is defined and retry_time >= 0,
* time out when time goes past endtime (timebase time in ticks).
*
* @prompt: Prompt to display
* @buffer: Place to put the line that is entered
* @timeout: Timeout in milliseconds, 0 if none
* @return command line length excluding terminator, or -ve on error: of the
* timeout is exceeded (either CONFIG_BOOT_RETRY_TIME or the timeout
* parameter), then -2 is returned. If a break is detected (Ctrl-C) then
* -1 is returned.
*/
int cli_readline_into_buffer(const char *const prompt, char *buffer,
int timeout);
/**
* parse_line() - split a command line down into separate arguments
*
* The argv[] array is filled with pointers into @line, and each argument
* is terminated by \0 (i.e. @line is changed in the process unless there
* is only one argument).
*
* #argv is terminated by a NULL after the last argument pointer.
*
* At most CONFIG_SYS_MAXARGS arguments are permited - if there are more
* than that then an error is printed, and this function returns
* CONFIG_SYS_MAXARGS, with argv[] set up to that point.
*
* @line: Command line to parse
* @args: Array to hold arguments
* @return number of arguments
*/
int cli_simple_parse_line(char *line, char *argv[]);
#if CONFIG_IS_ENABLED(OF_CONTROL)
/**
* cli_process_fdt() - process the boot command from the FDT
*
* If bootcmmd is defined in the /config node of the FDT, we use that
* as the boot command. Further, if bootsecure is set to 1 (in the same
* node) then we return true, indicating that the command should be executed
* as securely as possible, avoiding the CLI parser.
*
* @cmdp: On entry, the command that will be executed if the FDT does
* not have a command. Returns the command to execute after
* checking the FDT.
* @return true to execute securely, else false
*/
bool cli_process_fdt(const char **cmdp);
/** cli_secure_boot_cmd() - execute a command as securely as possible
*
* This avoids using the parser, thus executing the command with the
* smallest amount of code. Parameters are not supported.
*/
void cli_secure_boot_cmd(const char *cmd);
#else
static inline bool cli_process_fdt(const char **cmdp)
{
return false;
}
static inline void cli_secure_boot_cmd(const char *cmd)
{
}
#endif /* CONFIG_OF_CONTROL */
/**
* Go into the command loop
*
* This will return if we get a timeout waiting for a command, but only for
* the simple parser (not hush). See CONFIG_BOOT_RETRY_TIME.
*/
void cli_loop(void);
/** Set up the command line interpreter ready for action */
void cli_init(void);
#define endtick(seconds) (get_ticks() + (uint64_t)(seconds) * get_tbclk())
#endif
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