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