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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>
*/
#include <common.h>
#include <fastboot.h>
/**
* 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, ...)
{
va_list args;
strlcpy(response, tag, FASTBOOT_RESPONSE_LEN);
if (format) {
va_start(args, format);
vsnprintf(response + strlen(response),
FASTBOOT_RESPONSE_LEN - strlen(response) - 1,
format, args);
va_end(args);
}
}
/**
* fastboot_fail() - Write a FAIL response of the form "FAIL$reason".
*
* @reason: Pointer to returned reason string
* @response: Pointer to fastboot response buffer
*/
void fastboot_fail(const char *reason, char *response)
{
fastboot_response("FAIL", response, "%s", reason);
}
/**
* fastboot_okay() - Write an OKAY response of the form "OKAY$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)
{
if (reason)
fastboot_response("OKAY", response, "%s", reason);
else
fastboot_response("OKAY", response, NULL);
}
/**
* 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 __weak fastboot_set_reboot_flag(void)
{
return -ENOSYS;
}
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