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common/dfu.c
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// SPDX-License-Identifier: GPL-2.0+ |
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/* * 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> |
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*/ #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; |
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ret = usb_gadget_initialize(usbctrl_index); |
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if (ret) { |
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pr_err("usb_gadget_initialize failed "); |
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return CMD_RET_FAILURE; } |
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g_dnl_clear_detach(); |
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ret = g_dnl_register(usb_dnl_gadget); if (ret) { |
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pr_err("g_dnl_register failed"); |
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return CMD_RET_FAILURE; } |
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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) { |
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pr_err("Deferred dfu_flush() failed!"); |
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goto exit; } } WATCHDOG_RESET(); usb_gadget_handle_interrupts(usbctrl_index); } exit: g_dnl_unregister(); |
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usb_gadget_release(usbctrl_index); |
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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(); return ret; } |