1 /* SPDX-License-Identifier: GPL-2.0+ */
3 * (C) Copyright 2008 - 2009
4 * Windriver, <www.windriver.com>
5 * Tom Rix <Tom.Rix@windriver.com>
7 * Copyright 2011 Sebastian Andrzej Siewior <bigeasy@linutronix.de>
9 * Copyright 2014 Linaro, Ltd.
10 * Rob Herring <robh@kernel.org>
15 #define FASTBOOT_VERSION "0.4"
17 /* The 64 defined bytes plus \0 */
18 #define FASTBOOT_COMMAND_LEN (64 + 1)
19 #define FASTBOOT_RESPONSE_LEN (64 + 1)
22 * All known commands to fastboot
25 FASTBOOT_COMMAND_GETVAR = 0,
26 FASTBOOT_COMMAND_DOWNLOAD,
27 #if CONFIG_IS_ENABLED(FASTBOOT_FLASH)
28 FASTBOOT_COMMAND_FLASH,
29 FASTBOOT_COMMAND_ERASE,
31 FASTBOOT_COMMAND_BOOT,
32 FASTBOOT_COMMAND_CONTINUE,
33 FASTBOOT_COMMAND_REBOOT,
34 FASTBOOT_COMMAND_REBOOT_BOOTLOADER,
35 FASTBOOT_COMMAND_REBOOT_FASTBOOTD,
36 FASTBOOT_COMMAND_REBOOT_RECOVERY,
37 FASTBOOT_COMMAND_SET_ACTIVE,
38 #if CONFIG_IS_ENABLED(FASTBOOT_CMD_OEM_FORMAT)
39 FASTBOOT_COMMAND_OEM_FORMAT,
42 FASTBOOT_COMMAND_COUNT
48 enum fastboot_reboot_reason {
49 FASTBOOT_REBOOT_REASON_BOOTLOADER,
50 FASTBOOT_REBOOT_REASON_FASTBOOTD,
51 FASTBOOT_REBOOT_REASON_RECOVERY,
52 FASTBOOT_REBOOT_REASONS_COUNT
58 static const char * const fastboot_boot_cmds[] = {
59 [FASTBOOT_REBOOT_REASON_BOOTLOADER] = "bootonce-bootloader",
60 [FASTBOOT_REBOOT_REASON_FASTBOOTD] = "boot-fastboot",
61 [FASTBOOT_REBOOT_REASON_RECOVERY] = "boot-recovery"
65 * fastboot_response() - Writes a response of the form "$tag$reason".
67 * @tag: The first part of the response
68 * @response: Pointer to fastboot response buffer
69 * @format: printf style format string
71 void fastboot_response(const char *tag, char *response,
72 const char *format, ...)
73 __attribute__ ((format (__printf__, 3, 4)));
76 * fastboot_fail() - Write a FAIL response of the form "FAIL$reason".
78 * @reason: Pointer to returned reason string
79 * @response: Pointer to fastboot response buffer
81 void fastboot_fail(const char *reason, char *response);
84 * fastboot_okay() - Write an OKAY response of the form "OKAY$reason".
86 * @reason: Pointer to returned reason string, or NULL to send a bare "OKAY"
87 * @response: Pointer to fastboot response buffer
89 void fastboot_okay(const char *reason, char *response);
92 * fastboot_set_reboot_flag() - Set flag to indicate reboot-bootloader
94 * Set flag which indicates that we should reboot into the bootloader
95 * following the reboot that fastboot executes after this function.
97 * This function should be overridden in your board file with one
98 * which sets whatever flag your board specific Android bootloader flow
99 * requires in order to re-enter the bootloader.
101 int fastboot_set_reboot_flag(enum fastboot_reboot_reason reason);
104 * fastboot_set_progress_callback() - set progress callback
106 * @progress: Pointer to progress callback
108 * Set a callback which is invoked periodically during long running operations
109 * (flash and erase). This can be used (for example) by the UDP transport to
110 * send INFO responses to keep the client alive whilst those commands are
113 void fastboot_set_progress_callback(void (*progress)(const char *msg));
116 * fastboot_init() - initialise new fastboot protocol session
118 * @buf_addr: Pointer to download buffer, or NULL for default
119 * @buf_size: Size of download buffer, or zero for default
121 void fastboot_init(void *buf_addr, u32 buf_size);
124 * fastboot_boot() - Execute fastboot boot command
126 * If ${fastboot_bootcmd} is set, run that command to execute the boot
127 * process, if that returns, then exit the fastboot server and return
128 * control to the caller.
130 * Otherwise execute "bootm <fastboot_buf_addr>", if that fails, reset
133 void fastboot_boot(void);
136 * fastboot_handle_command() - Handle fastboot command
138 * @cmd_string: Pointer to command string
139 * @response: Pointer to fastboot response buffer
141 * Return: Executed command, or -1 if not recognized
143 int fastboot_handle_command(char *cmd_string, char *response);
146 * fastboot_data_remaining() - return bytes remaining in current transfer
148 * Return: Number of bytes left in the current download
150 u32 fastboot_data_remaining(void);
153 * fastboot_data_download() - Copy image data to fastboot_buf_addr.
155 * @fastboot_data: Pointer to received fastboot data
156 * @fastboot_data_len: Length of received fastboot data
157 * @response: Pointer to fastboot response buffer
159 * Copies image data from fastboot_data to fastboot_buf_addr. Writes to
160 * response. fastboot_bytes_received is updated to indicate the number
161 * of bytes that have been transferred.
163 void fastboot_data_download(const void *fastboot_data,
164 unsigned int fastboot_data_len, char *response);
167 * fastboot_data_complete() - Mark current transfer complete
169 * @response: Pointer to fastboot response buffer
171 * Set image_size and ${filesize} to the total size of the downloaded image.
173 void fastboot_data_complete(char *response);
175 #endif /* _FASTBOOT_H_ */