2 * Copyright 2011 Drew Fisher <drew.m.fisher@gmail.com>. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL DREW FISHER OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * The views and conclusions contained in the software and documentation are
28 * those of the authors and should not be interpreted as representing official
29 * policies, either expressed or implied, of Drew Fisher.
41 static libusb_device_handle *dev;
42 static unsigned int seq;
59 #define LOG(...) printf(__VA_ARGS__)
61 #if __BYTE_ORDER == __BIG_ENDIAN
62 static inline uint32_t fn_le32(uint32_t d)
64 return (d<<24) | ((d<<8)&0xFF0000) | ((d>>8)&0xFF00) | (d>>24);
67 #define fn_le32(x) (x)
70 static void dump_bl_cmd(bootloader_command cmd) {
72 for (i = 0; i < 24; i++)
73 LOG("%02X ", ((unsigned char*)(&cmd))[i]);
77 static int get_first_reply(void) {
78 unsigned char buffer[512];
81 res = libusb_bulk_transfer(dev, 0x81, buffer, 512, &transferred, 0);
83 LOG("Error reading first reply: %d\ttransferred: %d (expected %d)\n", res, transferred, 0x60);
86 LOG("Reading first reply: ");
88 for (i = 0; i < transferred; ++i) {
89 LOG("%02X ", buffer[i]);
95 static int get_reply(void) {
98 /* The following is needed because libusb_bulk_transfer might
99 * fail when working on a buffer smaller than 512 bytes.
101 unsigned char dump[512];
106 res = libusb_bulk_transfer(dev, 0x81, reply.dump, 512, &transferred, 0);
107 if (res != 0 || transferred != sizeof(status_code)) {
108 LOG("Error reading reply: %d\ttransferred: %d (expected %zu)\n", res, transferred, sizeof(status_code));
111 if (fn_le32(reply.buffer.magic) != 0x0a6fe000) {
112 LOG("Error reading reply: invalid magic %08X\n", reply.buffer.magic);
115 if (fn_le32(reply.buffer.seq) != seq) {
116 LOG("Error reading reply: non-matching sequence number %08X (expected %08X)\n", reply.buffer.seq, seq);
119 if (fn_le32(reply.buffer.status) != 0) {
120 LOG("Notice reading reply: last uint32_t was nonzero: %d\n", reply.buffer.status);
123 LOG("Reading reply: ");
125 for (i = 0; i < transferred; ++i) {
126 LOG("%02X ", reply.dump[i]);
133 int main(int argc, char** argv) {
134 char default_filename[] = "firmware.bin";
135 char* filename = default_filename;
142 FILE* fw = fopen(filename, "r");
144 fprintf(stderr, "Failed to open %s: %s\n", filename, strerror(errno));
149 libusb_set_debug(NULL, 3);
151 dev = libusb_open_device_with_vid_pid(NULL, 0x045e, 0x02ad);
153 fprintf(stderr, "Couldn't open device.\n");
155 goto fail_libusb_open;
158 libusb_set_configuration(dev, 1);
159 libusb_claim_interface(dev, 0);
163 bootloader_command cmd;
164 cmd.magic = fn_le32(0x06022009);
165 cmd.seq = fn_le32(seq);
166 cmd.bytes = fn_le32(0x60);
167 cmd.cmd = fn_le32(0);
168 cmd.write_addr = fn_le32(0x15);
169 cmd.unk = fn_le32(0);
171 LOG("About to send: ");
176 res = libusb_bulk_transfer(dev, 1, (unsigned char*)&cmd, sizeof(cmd), &transferred, 0);
177 if (res != 0 || transferred != sizeof(cmd)) {
178 LOG("Error: res: %d\ttransferred: %d (expected %zu)\n", res, transferred, sizeof(cmd));
181 res = get_first_reply(); // This first one doesn't have the usual magic bytes at the beginning, and is 96 bytes long - much longer than the usual 12-byte replies.
182 res = get_reply(); // I'm not sure why we do this twice here, but maybe it'll make sense later.
185 // Split addr declaration and assignment in order to compile as C++,
186 // otherwise this would give "jump to label '...' crosses initialization"
190 unsigned char page[0x4000];
193 read = fread(page, 1, 0x4000, fw);
198 cmd.seq = fn_le32(seq);
199 cmd.bytes = fn_le32(read);
200 cmd.cmd = fn_le32(0x03);
201 cmd.write_addr = fn_le32(addr);
202 LOG("About to send: ");
205 res = libusb_bulk_transfer(dev, 1, (unsigned char*)&cmd, sizeof(cmd), &transferred, 0);
206 if (res != 0 || transferred != sizeof(cmd)) {
207 LOG("Error: res: %d\ttransferred: %d (expected %zu)\n", res, transferred, sizeof(cmd));
211 while (bytes_sent < read) {
212 int to_send = (read - bytes_sent > 512 ? 512 : read - bytes_sent);
213 res = libusb_bulk_transfer(dev, 1, &page[bytes_sent], to_send, &transferred, 0);
214 if (res != 0 || transferred != to_send) {
215 LOG("Error: res: %d\ttransferred: %d (expected %d)\n", res, transferred, to_send);
218 bytes_sent += to_send;
222 addr += (uint32_t)read;
226 cmd.seq = fn_le32(seq);
227 cmd.bytes = fn_le32(0);
228 cmd.cmd = fn_le32(0x04);
229 cmd.write_addr = fn_le32(0x00080030);
231 res = libusb_bulk_transfer(dev, 1, (unsigned char*)&cmd, sizeof(cmd), &transferred, 0);
232 if (res != 0 || transferred != sizeof(cmd)) {
233 LOG("Error: res: %d\ttransferred: %d (expected %zu)\n", res, transferred, sizeof(cmd));
238 // Now the device reenumerates.