2 * (C) Copyright 2014 Google, Inc
3 * Simon Glass <sjg@chromium.org>
5 * SPDX-License-Identifier: GPL-2.0+
12 * Go into the command loop
14 * This will return if we get a timeout waiting for a command. See
15 * CONFIG_BOOT_RETRY_TIME.
17 void cli_simple_loop(void);
20 * cli_simple_run_command() - Execute a command with the simple CLI
22 * @cmd: String containing the command to execute
23 * @flag Flag value - see CMD_FLAG_...
24 * @return 1 - command executed, repeatable
25 * 0 - command executed but not repeatable, interrupted commands are
26 * always considered not repeatable
27 * -1 - not executed (unrecognized, bootd recursion or too many args)
28 * (If cmd is NULL or "" or longer than CONFIG_SYS_CBSIZE-1 it is
29 * considered unrecognized)
31 int cli_simple_run_command(const char *cmd, int flag);
34 * cli_simple_process_macros() - Expand $() and ${} format env. variables
36 * @param input Input string possible containing $() / ${} vars
37 * @param output Output string with $() / ${} vars expanded
39 void cli_simple_process_macros(const char *input, char *output);
42 * cli_simple_run_command_list() - Execute a list of command
44 * The commands should be separated by ; or \n and will be executed
45 * by the built-in parser.
47 * This function cannot take a const char * for the command, since if it
48 * finds newlines in the string, it replaces them with \0.
50 * @param cmd String containing list of commands
51 * @param flag Execution flags (CMD_FLAG_...)
52 * @return 0 on success, or != 0 on error.
54 int cli_simple_run_command_list(char *cmd, int flag);
57 * cli_readline() - read a line into the console_buffer
59 * This is a convenience function which calls cli_readline_into_buffer().
61 * @prompt: Prompt to display
62 * @return command line length excluding terminator, or -ve on error
64 int cli_readline(const char *const prompt);
67 * readline_into_buffer() - read a line into a buffer
69 * Display the prompt, then read a command line into @buffer. The
70 * maximum line length is CONFIG_SYS_CBSIZE including a \0 terminator, which
71 * will always be added.
73 * The command is echoed as it is typed. Command editing is supported if
74 * CONFIG_CMDLINE_EDITING is defined. Tab auto-complete is supported if
75 * CONFIG_AUTO_COMPLETE is defined. If CONFIG_BOOT_RETRY_TIME is defined,
76 * then a timeout will be applied.
78 * If CONFIG_BOOT_RETRY_TIME is defined and retry_time >= 0,
79 * time out when time goes past endtime (timebase time in ticks).
81 * @prompt: Prompt to display
82 * @buffer: Place to put the line that is entered
83 * @timeout: Timeout in milliseconds, 0 if none
84 * @return command line length excluding terminator, or -ve on error: of the
85 * timeout is exceeded (either CONFIG_BOOT_RETRY_TIME or the timeout
86 * parameter), then -2 is returned. If a break is detected (Ctrl-C) then
89 int cli_readline_into_buffer(const char *const prompt, char *buffer,
93 * parse_line() - split a command line down into separate arguments
95 * The argv[] array is filled with pointers into @line, and each argument
96 * is terminated by \0 (i.e. @line is changed in the process unless there
97 * is only one argument).
99 * #argv is terminated by a NULL after the last argument pointer.
101 * At most CONFIG_SYS_MAXARGS arguments are permited - if there are more
102 * than that then an error is printed, and this function returns
103 * CONFIG_SYS_MAXARGS, with argv[] set up to that point.
105 * @line: Command line to parse
106 * @args: Array to hold arguments
107 * @return number of arguments
109 int cli_simple_parse_line(char *line, char *argv[]);
111 #ifdef CONFIG_OF_CONTROL
113 * cli_process_fdt() - process the boot command from the FDT
115 * If bootcmmd is defined in the /config node of the FDT, we use that
116 * as the boot command. Further, if bootsecure is set to 1 (in the same
117 * node) then we return true, indicating that the command should be executed
118 * as securely as possible, avoiding the CLI parser.
120 * @cmdp: On entry, the command that will be executed if the FDT does
121 * not have a command. Returns the command to execute after
123 * @return true to execute securely, else false
125 bool cli_process_fdt(const char **cmdp);
127 /** cli_secure_boot_cmd() - execute a command as securely as possible
129 * This avoids using the parser, thus executing the command with the
130 * smallest amount of code. Parameters are not supported.
132 void cli_secure_boot_cmd(const char *cmd);
134 static inline bool cli_process_fdt(const char **cmdp)
139 static inline void cli_secure_boot_cmd(const char *cmd)
142 #endif /* CONFIG_OF_CONTROL */
145 * Go into the command loop
147 * This will return if we get a timeout waiting for a command, but only for
148 * the simple parser (not hush). See CONFIG_BOOT_RETRY_TIME.
152 /** Set up the command line interpreter ready for action */
155 #define endtick(seconds) (get_ticks() + (uint64_t)(seconds) * get_tbclk())