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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* (C) Copyright 2008 - 2009
* Windriver, <www.windriver.com>
* Tom Rix <Tom.Rix@windriver.com>
*
* Copyright 2011 Sebastian Andrzej Siewior <bigeasy@linutronix.de>
*
* Copyright 2014 Linaro, Ltd.
* Rob Herring <robh@kernel.org>
*/
#ifndef _FASTBOOT_H_
#define _FASTBOOT_H_
#include <linux/types.h>
#define FASTBOOT_VERSION "0.4"
/*
* Signals u-boot fastboot code to send multiple responses by
* calling response generating function repeatedly until a OKAY/FAIL
* is generated as final response.
*
* This status code is only used internally to signal, must NOT
* be sent to host.
*/
#define FASTBOOT_MULTIRESPONSE_START ("MORE")
/* The 64 defined bytes plus \0 */
#define FASTBOOT_COMMAND_LEN (64 + 1)
#define FASTBOOT_RESPONSE_LEN (64 + 1)
/**
* All known commands to fastboot
*/
enum {
FASTBOOT_COMMAND_GETVAR = 0,
FASTBOOT_COMMAND_DOWNLOAD,
FASTBOOT_COMMAND_FLASH,
FASTBOOT_COMMAND_ERASE,
FASTBOOT_COMMAND_BOOT,
FASTBOOT_COMMAND_CONTINUE,
FASTBOOT_COMMAND_REBOOT,
FASTBOOT_COMMAND_REBOOT_BOOTLOADER,
FASTBOOT_COMMAND_REBOOT_FASTBOOTD,
FASTBOOT_COMMAND_REBOOT_RECOVERY,
FASTBOOT_COMMAND_SET_ACTIVE,
FASTBOOT_COMMAND_OEM_FORMAT,
FASTBOOT_COMMAND_OEM_PARTCONF,
FASTBOOT_COMMAND_OEM_BOOTBUS,
FASTBOOT_COMMAND_OEM_RUN,
FASTBOOT_COMMAND_OEM_CONSOLE,
FASTBOOT_COMMAND_OEM_BOARD,
FASTBOOT_COMMAND_ACMD,
FASTBOOT_COMMAND_UCMD,
FASTBOOT_COMMAND_COUNT
};
/**
* Reboot reasons
*/
enum fastboot_reboot_reason {
FASTBOOT_REBOOT_REASON_BOOTLOADER,
FASTBOOT_REBOOT_REASON_FASTBOOTD,
FASTBOOT_REBOOT_REASON_RECOVERY,
FASTBOOT_REBOOT_REASONS_COUNT
};
/**
* fastboot_response() - Writes a response of the form "$tag$reason".
*
* @tag: The first part of the response
* @response: Pointer to fastboot response buffer
* @format: printf style format string
*/
void fastboot_response(const char *tag, char *response,
const char *format, ...)
__attribute__ ((format (__printf__, 3, 4)));
/**
* fastboot_fail() - Write a FAIL response of the form "FAIL$reason".
*
* @reason: Pointer to returned reason string
* @response: Pointer to fastboot response buffer
*/
void fastboot_fail(const char *reason, char *response);
/**
* fastboot_okay() - Write an OKAY response of the form "OKAY$reason".
*
* @reason: Pointer to returned reason string, or NULL to send a bare "OKAY"
* @response: Pointer to fastboot response buffer
*/
void fastboot_okay(const char *reason, char *response);
/**
* fastboot_set_reboot_flag() - Set flag to indicate reboot-bootloader
*
* Set flag which indicates that we should reboot into the bootloader
* following the reboot that fastboot executes after this function.
*
* This function should be overridden in your board file with one
* which sets whatever flag your board specific Android bootloader flow
* requires in order to re-enter the bootloader.
*/
int fastboot_set_reboot_flag(enum fastboot_reboot_reason reason);
/**
* fastboot_set_progress_callback() - set progress callback
*
* @progress: Pointer to progress callback
*
* Set a callback which is invoked periodically during long running operations
* (flash and erase). This can be used (for example) by the UDP transport to
* send INFO responses to keep the client alive whilst those commands are
* executing.
*/
void fastboot_set_progress_callback(void (*progress)(const char *msg));
/*
* fastboot_init() - initialise new fastboot protocol session
*
* @buf_addr: Pointer to download buffer, or NULL for default
* @buf_size: Size of download buffer, or zero for default
*/
void fastboot_init(void *buf_addr, u32 buf_size);
/**
* fastboot_boot() - Execute fastboot boot command
*
* If ${fastboot_bootcmd} is set, run that command to execute the boot
* process, if that returns, then exit the fastboot server and return
* control to the caller.
*
* Otherwise execute "bootm <fastboot_buf_addr>", if that fails, reset
* the board.
*/
void fastboot_boot(void);
/**
* fastboot_handle_boot() - Shared implementation of system reaction to
* fastboot commands
*
* Making desceisions about device boot state (stay in fastboot, reboot
* to bootloader, reboot to OS, etc).
*/
void fastboot_handle_boot(int command, bool success);
/**
* fastboot_handle_command() - Handle fastboot command
*
* @cmd_string: Pointer to command string
* @response: Pointer to fastboot response buffer
*
* Return: Executed command, or -1 if not recognized
*/
int fastboot_handle_command(char *cmd_string, char *response);
/**
* fastboot_data_remaining() - return bytes remaining in current transfer
*
* Return: Number of bytes left in the current download
*/
u32 fastboot_data_remaining(void);
/**
* fastboot_data_download() - Copy image data to fastboot_buf_addr.
*
* @fastboot_data: Pointer to received fastboot data
* @fastboot_data_len: Length of received fastboot data
* @response: Pointer to fastboot response buffer
*
* Copies image data from fastboot_data to fastboot_buf_addr. Writes to
* response. fastboot_bytes_received is updated to indicate the number
* of bytes that have been transferred.
*/
void fastboot_data_download(const void *fastboot_data,
unsigned int fastboot_data_len, char *response);
/**
* fastboot_data_complete() - Mark current transfer complete
*
* @response: Pointer to fastboot response buffer
*
* Set image_size and ${filesize} to the total size of the downloaded image.
*/
void fastboot_data_complete(char *response);
/**
* fastboot_handle_multiresponse() - Called for each response to send
*
* @cmd: Command id that requested multiresponse
* @response: Pointer to fastboot response buffer
*/
void fastboot_multiresponse(int cmd, char *response);
void fastboot_acmd_complete(void);
#endif /* _FASTBOOT_H_ */
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