]>
Commit | Line | Data |
---|---|---|
05341a87 R |
1 | /* |
2 | * dfu.c -- dfu command | |
3 | * | |
4 | * Copyright (C) 2015 | |
5 | * Lukasz Majewski <l.majewski@majess.pl> | |
6 | * | |
7 | * Copyright (C) 2012 Samsung Electronics | |
8 | * authors: Andrzej Pietrasiewicz <andrzej.p@samsung.com> | |
9 | * Lukasz Majewski <l.majewski@samsung.com> | |
10 | * | |
11 | * SPDX-License-Identifier: GPL-2.0+ | |
12 | */ | |
13 | ||
14 | #include <common.h> | |
15 | #include <watchdog.h> | |
16 | #include <dfu.h> | |
17 | #include <console.h> | |
18 | #include <g_dnl.h> | |
19 | #include <usb.h> | |
20 | #include <net.h> | |
21 | ||
22 | int run_usb_dnl_gadget(int usbctrl_index, char *usb_dnl_gadget) | |
23 | { | |
24 | bool dfu_reset = false; | |
25 | int ret, i = 0; | |
26 | ||
27 | board_usb_init(usbctrl_index, USB_INIT_DEVICE); | |
28 | g_dnl_clear_detach(); | |
54a708ca SM |
29 | ret = g_dnl_register(usb_dnl_gadget); |
30 | if (ret) { | |
31 | error("g_dnl_register failed"); | |
32 | return CMD_RET_FAILURE; | |
33 | } | |
34 | ||
05341a87 R |
35 | while (1) { |
36 | if (g_dnl_detach()) { | |
37 | /* | |
38 | * Check if USB bus reset is performed after detach, | |
39 | * which indicates that -R switch has been passed to | |
40 | * dfu-util. In this case reboot the device | |
41 | */ | |
42 | if (dfu_usb_get_reset()) { | |
43 | dfu_reset = true; | |
44 | goto exit; | |
45 | } | |
46 | ||
47 | /* | |
48 | * This extra number of usb_gadget_handle_interrupts() | |
49 | * calls is necessary to assure correct transmission | |
50 | * completion with dfu-util | |
51 | */ | |
52 | if (++i == 10000) | |
53 | goto exit; | |
54 | } | |
55 | ||
56 | if (ctrlc()) | |
57 | goto exit; | |
58 | ||
59 | if (dfu_get_defer_flush()) { | |
60 | /* | |
61 | * Call to usb_gadget_handle_interrupts() is necessary | |
62 | * to act on ZLP OUT transaction from HOST PC after | |
63 | * transmitting the whole file. | |
64 | * | |
65 | * If this ZLP OUT packet is NAK'ed, the HOST libusb | |
66 | * function fails after timeout (by default it is set to | |
67 | * 5 seconds). In such situation the dfu-util program | |
68 | * exits with error message. | |
69 | */ | |
70 | usb_gadget_handle_interrupts(usbctrl_index); | |
71 | ret = dfu_flush(dfu_get_defer_flush(), NULL, 0, 0); | |
72 | dfu_set_defer_flush(NULL); | |
73 | if (ret) { | |
74 | error("Deferred dfu_flush() failed!"); | |
75 | goto exit; | |
76 | } | |
77 | } | |
78 | ||
79 | WATCHDOG_RESET(); | |
80 | usb_gadget_handle_interrupts(usbctrl_index); | |
81 | } | |
82 | exit: | |
83 | g_dnl_unregister(); | |
84 | board_usb_cleanup(usbctrl_index, USB_INIT_DEVICE); | |
85 | ||
86 | if (dfu_reset) | |
87 | run_command("reset", 0); | |
88 | ||
89 | g_dnl_clear_detach(); | |
90 | ||
91 | return ret; | |
92 | } |