GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/bootloader/u-boot-2020.01/include/cli.h

@@ -0,0 +1,156 @@
+/* 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