u-boot/common/dfu.c
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

95 lines
2.1 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* dfu.c -- dfu command
*
* Copyright (C) 2015
* Lukasz Majewski <l.majewski@majess.pl>
*
* Copyright (C) 2012 Samsung Electronics
* authors: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
* Lukasz Majewski <l.majewski@samsung.com>
*/
#include <common.h>
#include <watchdog.h>
#include <dfu.h>
#include <console.h>
#include <g_dnl.h>
#include <usb.h>
#include <net.h>
int run_usb_dnl_gadget(int usbctrl_index, char *usb_dnl_gadget)
{
bool dfu_reset = false;
int ret, i = 0;
ret = board_usb_init(usbctrl_index, USB_INIT_DEVICE);
if (ret) {
pr_err("board usb init failed\n");
return CMD_RET_FAILURE;
}
g_dnl_clear_detach();
ret = g_dnl_register(usb_dnl_gadget);
if (ret) {
pr_err("g_dnl_register failed");
return CMD_RET_FAILURE;
}
while (1) {
if (g_dnl_detach()) {
/*
* Check if USB bus reset is performed after detach,
* which indicates that -R switch has been passed to
* dfu-util. In this case reboot the device
*/
if (dfu_usb_get_reset()) {
dfu_reset = true;
goto exit;
}
/*
* This extra number of usb_gadget_handle_interrupts()
* calls is necessary to assure correct transmission
* completion with dfu-util
*/
if (++i == 10000)
goto exit;
}
if (ctrlc())
goto exit;
if (dfu_get_defer_flush()) {
/*
* Call to usb_gadget_handle_interrupts() is necessary
* to act on ZLP OUT transaction from HOST PC after
* transmitting the whole file.
*
* If this ZLP OUT packet is NAK'ed, the HOST libusb
* function fails after timeout (by default it is set to
* 5 seconds). In such situation the dfu-util program
* exits with error message.
*/
usb_gadget_handle_interrupts(usbctrl_index);
ret = dfu_flush(dfu_get_defer_flush(), NULL, 0, 0);
dfu_set_defer_flush(NULL);
if (ret) {
pr_err("Deferred dfu_flush() failed!");
goto exit;
}
}
WATCHDOG_RESET();
usb_gadget_handle_interrupts(usbctrl_index);
}
exit:
g_dnl_unregister();
board_usb_cleanup(usbctrl_index, USB_INIT_DEVICE);
if (dfu_reset)
do_reset(NULL, 0, 0, NULL);
g_dnl_clear_detach();
return ret;
}