Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2009, Google Inc. |
| 3 | * All rights reserved. |
| 4 | * |
lijuang | c267675 | 2018-05-15 13:52:36 +0800 | [diff] [blame] | 5 | * Copyright (c) 2013-2015, 2018, The Linux Foundation. All rights reserved. |
Deepa Dinamani | 26bc2d3 | 2013-03-15 13:17:16 -0700 | [diff] [blame] | 6 | * |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 7 | * Redistribution and use in source and binary forms, with or without |
| 8 | * modification, are permitted provided that the following conditions |
| 9 | * are met: |
Deepa Dinamani | 26bc2d3 | 2013-03-15 13:17:16 -0700 | [diff] [blame] | 10 | * * Redistributions of source code must retain the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer. |
| 12 | * * Redistributions in binary form must reproduce the above copyright |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 13 | * notice, this list of conditions and the following disclaimer in |
Deepa Dinamani | 26bc2d3 | 2013-03-15 13:17:16 -0700 | [diff] [blame] | 14 | * the documentation and/or other materials provided with the |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 15 | * distribution. |
| 16 | * |
| 17 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 18 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 19 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| 20 | * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| 21 | * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| 23 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
Deepa Dinamani | 26bc2d3 | 2013-03-15 13:17:16 -0700 | [diff] [blame] | 24 | * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 25 | * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| 26 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| 27 | * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 28 | * SUCH DAMAGE. |
| 29 | */ |
| 30 | |
| 31 | #include <debug.h> |
| 32 | #include <string.h> |
| 33 | #include <stdlib.h> |
Deepa Dinamani | 0bf2f44 | 2012-10-19 11:41:06 -0700 | [diff] [blame] | 34 | #include <platform.h> |
Amol Jadi | 5edf355 | 2013-07-23 14:15:34 -0700 | [diff] [blame] | 35 | #include <target.h> |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 36 | #include <kernel/thread.h> |
| 37 | #include <kernel/event.h> |
| 38 | #include <dev/udc.h> |
Channagoud Kadabi | a0930b9 | 2013-04-16 15:14:37 -0700 | [diff] [blame] | 39 | #include "fastboot.h" |
Parth Dixit | f8071f0 | 2017-09-27 17:59:30 +0530 | [diff] [blame] | 40 | #include <err.h> |
tracychui | d184b91 | 2020-06-05 17:31:38 +0800 | [diff] [blame^] | 41 | /*[20200605][TracyChui] Implement get Serial Number start*/ |
| 42 | #include <devinfo.h> |
| 43 | /*[20200605][TracyChui] Implement get Serial Number end*/ |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 44 | |
Amol Jadi | 7c4316c | 2013-10-07 14:19:26 -0700 | [diff] [blame] | 45 | #ifdef USB30_SUPPORT |
| 46 | #include <usb30_udc.h> |
| 47 | #endif |
| 48 | |
| 49 | typedef struct |
| 50 | { |
| 51 | int (*udc_init)(struct udc_device *devinfo); |
| 52 | int (*udc_register_gadget)(struct udc_gadget *gadget); |
| 53 | int (*udc_start)(void); |
| 54 | int (*udc_stop)(void); |
| 55 | |
| 56 | struct udc_endpoint *(*udc_endpoint_alloc)(unsigned type, unsigned maxpkt); |
| 57 | void (*udc_endpoint_free)(struct udc_endpoint *ept); |
| 58 | struct udc_request *(*udc_request_alloc)(void); |
| 59 | void (*udc_request_free)(struct udc_request *req); |
| 60 | |
| 61 | int (*usb_read)(void *buf, unsigned len); |
| 62 | int (*usb_write)(void *buf, unsigned len); |
| 63 | } usb_controller_interface_t; |
| 64 | |
| 65 | usb_controller_interface_t usb_if; |
| 66 | |
Hanumant Singh | 108cdc6 | 2012-12-11 16:48:49 -0800 | [diff] [blame] | 67 | #define MAX_USBFS_BULK_SIZE (32 * 1024) |
Channagoud Kadabi | 8782380 | 2014-11-05 13:10:05 -0800 | [diff] [blame] | 68 | #define MAX_USBSS_BULK_SIZE (0x1000000) |
Shashank Mittal | 6a5609f | 2011-08-04 15:51:59 -0700 | [diff] [blame] | 69 | |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 70 | void boot_linux(void *bootimg, unsigned sz); |
Amol Jadi | 5edf355 | 2013-07-23 14:15:34 -0700 | [diff] [blame] | 71 | static void fastboot_notify(struct udc_gadget *gadget, unsigned event); |
| 72 | static struct udc_endpoint *fastboot_endpoints[2]; |
| 73 | |
| 74 | static struct udc_device surf_udc_device = { |
| 75 | .vendor_id = 0x18d1, |
| 76 | .product_id = 0xD00D, |
| 77 | .version_id = 0x0100, |
| 78 | .manufacturer = "Google", |
| 79 | .product = "Android", |
| 80 | }; |
| 81 | |
| 82 | static struct udc_gadget fastboot_gadget = { |
| 83 | .notify = fastboot_notify, |
| 84 | .ifc_class = 0xff, |
| 85 | .ifc_subclass = 0x42, |
| 86 | .ifc_protocol = 0x03, |
| 87 | .ifc_endpoints = 2, |
| 88 | .ifc_string = "fastboot", |
| 89 | .ept = fastboot_endpoints, |
| 90 | }; |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 91 | |
| 92 | /* todo: give lk strtoul and nuke this */ |
| 93 | static unsigned hex2unsigned(const char *x) |
| 94 | { |
| 95 | unsigned n = 0; |
| 96 | |
| 97 | while(*x) { |
| 98 | switch(*x) { |
| 99 | case '0': case '1': case '2': case '3': case '4': |
| 100 | case '5': case '6': case '7': case '8': case '9': |
| 101 | n = (n << 4) | (*x - '0'); |
| 102 | break; |
| 103 | case 'a': case 'b': case 'c': |
| 104 | case 'd': case 'e': case 'f': |
| 105 | n = (n << 4) | (*x - 'a' + 10); |
| 106 | break; |
| 107 | case 'A': case 'B': case 'C': |
| 108 | case 'D': case 'E': case 'F': |
| 109 | n = (n << 4) | (*x - 'A' + 10); |
| 110 | break; |
| 111 | default: |
| 112 | return n; |
| 113 | } |
| 114 | x++; |
| 115 | } |
| 116 | |
| 117 | return n; |
| 118 | } |
| 119 | |
| 120 | struct fastboot_cmd { |
| 121 | struct fastboot_cmd *next; |
| 122 | const char *prefix; |
| 123 | unsigned prefix_len; |
| 124 | void (*handle)(const char *arg, void *data, unsigned sz); |
| 125 | }; |
| 126 | |
| 127 | struct fastboot_var { |
| 128 | struct fastboot_var *next; |
| 129 | const char *name; |
| 130 | const char *value; |
| 131 | }; |
Amol Jadi | 5edf355 | 2013-07-23 14:15:34 -0700 | [diff] [blame] | 132 | |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 133 | static struct fastboot_cmd *cmdlist; |
| 134 | |
| 135 | void fastboot_register(const char *prefix, |
| 136 | void (*handle)(const char *arg, void *data, unsigned sz)) |
| 137 | { |
| 138 | struct fastboot_cmd *cmd; |
| 139 | cmd = malloc(sizeof(*cmd)); |
| 140 | if (cmd) { |
| 141 | cmd->prefix = prefix; |
| 142 | cmd->prefix_len = strlen(prefix); |
| 143 | cmd->handle = handle; |
| 144 | cmd->next = cmdlist; |
| 145 | cmdlist = cmd; |
| 146 | } |
| 147 | } |
| 148 | |
| 149 | static struct fastboot_var *varlist; |
| 150 | |
| 151 | void fastboot_publish(const char *name, const char *value) |
| 152 | { |
| 153 | struct fastboot_var *var; |
| 154 | var = malloc(sizeof(*var)); |
| 155 | if (var) { |
| 156 | var->name = name; |
| 157 | var->value = value; |
| 158 | var->next = varlist; |
| 159 | varlist = var; |
| 160 | } |
| 161 | } |
| 162 | |
| 163 | |
| 164 | static event_t usb_online; |
| 165 | static event_t txn_done; |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 166 | static struct udc_endpoint *in, *out; |
| 167 | static struct udc_request *req; |
| 168 | int txn_status; |
| 169 | |
| 170 | static void *download_base; |
| 171 | static unsigned download_max; |
| 172 | static unsigned download_size; |
Parth Dixit | f8071f0 | 2017-09-27 17:59:30 +0530 | [diff] [blame] | 173 | static void *upload_base_addr; |
| 174 | static unsigned upload_size; |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 175 | |
| 176 | #define STATE_OFFLINE 0 |
| 177 | #define STATE_COMMAND 1 |
| 178 | #define STATE_COMPLETE 2 |
| 179 | #define STATE_ERROR 3 |
| 180 | |
| 181 | static unsigned fastboot_state = STATE_OFFLINE; |
| 182 | |
| 183 | static void req_complete(struct udc_request *req, unsigned actual, int status) |
| 184 | { |
| 185 | txn_status = status; |
| 186 | req->length = actual; |
Hanumant Singh | 108cdc6 | 2012-12-11 16:48:49 -0800 | [diff] [blame] | 187 | |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 188 | event_signal(&txn_done, 0); |
| 189 | } |
| 190 | |
Amol Jadi | 5e52d72 | 2013-08-19 17:10:33 -0700 | [diff] [blame] | 191 | #ifdef USB30_SUPPORT |
Channagoud Kadabi | 8782380 | 2014-11-05 13:10:05 -0800 | [diff] [blame] | 192 | static int usb30_usb_read(void *_buf, unsigned len) |
Amol Jadi | 5e52d72 | 2013-08-19 17:10:33 -0700 | [diff] [blame] | 193 | { |
| 194 | int r; |
| 195 | struct udc_request req; |
Channagoud Kadabi | 8782380 | 2014-11-05 13:10:05 -0800 | [diff] [blame] | 196 | uint32_t xfer; |
| 197 | int count = 0; |
| 198 | uint32_t trans_len = len; |
| 199 | const char *buf = _buf; |
Amol Jadi | 5e52d72 | 2013-08-19 17:10:33 -0700 | [diff] [blame] | 200 | |
| 201 | ASSERT(buf); |
| 202 | ASSERT(len); |
| 203 | |
| 204 | if (fastboot_state == STATE_ERROR) |
| 205 | goto oops; |
| 206 | |
| 207 | dprintf(SPEW, "usb_read(): len = %d\n", len); |
| 208 | |
Channagoud Kadabi | 8782380 | 2014-11-05 13:10:05 -0800 | [diff] [blame] | 209 | while (len > 0) |
Amol Jadi | 5e52d72 | 2013-08-19 17:10:33 -0700 | [diff] [blame] | 210 | { |
Channagoud Kadabi | 8782380 | 2014-11-05 13:10:05 -0800 | [diff] [blame] | 211 | xfer = (len > MAX_USBSS_BULK_SIZE) ? MAX_USBSS_BULK_SIZE : len; |
Amol Jadi | 5e52d72 | 2013-08-19 17:10:33 -0700 | [diff] [blame] | 212 | |
Channagoud Kadabi | 8782380 | 2014-11-05 13:10:05 -0800 | [diff] [blame] | 213 | req.buf = (void*) PA((addr_t)buf); |
| 214 | req.length = xfer; |
| 215 | req.complete = req_complete; |
Amol Jadi | 5e52d72 | 2013-08-19 17:10:33 -0700 | [diff] [blame] | 216 | |
Channagoud Kadabi | 8782380 | 2014-11-05 13:10:05 -0800 | [diff] [blame] | 217 | r = usb30_udc_request_queue(out, &req); |
| 218 | if (r < 0) |
| 219 | { |
| 220 | dprintf(CRITICAL, "usb_read() queue failed. r = %d\n", r); |
| 221 | goto oops; |
| 222 | } |
| 223 | event_wait(&txn_done); |
| 224 | |
| 225 | if (txn_status < 0) |
| 226 | { |
| 227 | dprintf(CRITICAL, "usb_read() transaction failed. txn_status = %d\n", |
| 228 | txn_status); |
| 229 | goto oops; |
| 230 | } |
| 231 | |
| 232 | count += req.length; |
| 233 | buf += req.length; |
| 234 | len -= req.length; |
| 235 | |
| 236 | /* note: req.length is update by callback to reflect the amount of data |
| 237 | * actually read. |
| 238 | */ |
| 239 | dprintf(SPEW, "usb_read(): DONE. req.length = %d\n\n", req.length); |
| 240 | |
| 241 | /* For USB3.0 if the data transfer is less than MaxpacketSize, its |
| 242 | * short packet and DWC layer generates transfer complete. App layer |
| 243 | * shold handle this and continue trasnferring the data instead of treating |
| 244 | * this as a transfer complete. This case is not applicable for transfers |
| 245 | * which involve protocol communication to exchange information whose length |
| 246 | * is always equal to MAX_RSP_SIZE. This check ensures that we dont abort |
| 247 | * data transfers on short packet. |
| 248 | */ |
| 249 | if (req.length != xfer && trans_len == MAX_RSP_SIZE) break; |
| 250 | } |
Amol Jadi | 5e52d72 | 2013-08-19 17:10:33 -0700 | [diff] [blame] | 251 | |
| 252 | /* invalidate any cached buf data (controller updates main memory) */ |
lijuang | c267675 | 2018-05-15 13:52:36 +0800 | [diff] [blame] | 253 | arch_invalidate_cache_range((addr_t) _buf, ROUNDUP(count, CACHE_LINE)); |
Amol Jadi | 5e52d72 | 2013-08-19 17:10:33 -0700 | [diff] [blame] | 254 | |
Channagoud Kadabi | 8782380 | 2014-11-05 13:10:05 -0800 | [diff] [blame] | 255 | return count; |
Amol Jadi | 5e52d72 | 2013-08-19 17:10:33 -0700 | [diff] [blame] | 256 | |
| 257 | oops: |
| 258 | fastboot_state = STATE_ERROR; |
| 259 | dprintf(CRITICAL, "usb_read(): DONE: ERROR: len = %d\n", len); |
| 260 | return -1; |
| 261 | } |
| 262 | |
Amol Jadi | 7c4316c | 2013-10-07 14:19:26 -0700 | [diff] [blame] | 263 | static int usb30_usb_write(void *buf, unsigned len) |
Amol Jadi | 5e52d72 | 2013-08-19 17:10:33 -0700 | [diff] [blame] | 264 | { |
| 265 | int r; |
| 266 | struct udc_request req; |
| 267 | |
| 268 | ASSERT(buf); |
| 269 | ASSERT(len); |
| 270 | |
| 271 | if (fastboot_state == STATE_ERROR) |
| 272 | goto oops; |
| 273 | |
| 274 | dprintf(SPEW, "usb_write(): len = %d str = %s\n", len, (char *) buf); |
| 275 | |
| 276 | /* flush buffer to main memory before giving to udc */ |
| 277 | arch_clean_invalidate_cache_range((addr_t) buf, len); |
| 278 | |
| 279 | req.buf = (void*) PA((addr_t)buf); |
| 280 | req.length = len; |
| 281 | req.complete = req_complete; |
| 282 | |
Amol Jadi | 7c4316c | 2013-10-07 14:19:26 -0700 | [diff] [blame] | 283 | r = usb30_udc_request_queue(in, &req); |
Amol Jadi | 5e52d72 | 2013-08-19 17:10:33 -0700 | [diff] [blame] | 284 | if (r < 0) { |
| 285 | dprintf(CRITICAL, "usb_write() queue failed. r = %d\n", r); |
| 286 | goto oops; |
| 287 | } |
| 288 | event_wait(&txn_done); |
| 289 | |
| 290 | dprintf(SPEW, "usb_write(): DONE: len = %d req->length = %d str = %s\n", |
| 291 | len, req.length, (char *) buf); |
| 292 | |
| 293 | if (txn_status < 0) { |
| 294 | dprintf(CRITICAL, "usb_write() transaction failed. txn_status = %d\n", |
| 295 | txn_status); |
| 296 | goto oops; |
| 297 | } |
| 298 | |
| 299 | return req.length; |
| 300 | |
| 301 | oops: |
| 302 | fastboot_state = STATE_ERROR; |
| 303 | dprintf(CRITICAL, "usb_write(): DONE: ERROR: len = %d\n", len); |
| 304 | return -1; |
| 305 | } |
Amol Jadi | 7c4316c | 2013-10-07 14:19:26 -0700 | [diff] [blame] | 306 | #endif |
Amol Jadi | 5e52d72 | 2013-08-19 17:10:33 -0700 | [diff] [blame] | 307 | |
Amol Jadi | 7c4316c | 2013-10-07 14:19:26 -0700 | [diff] [blame] | 308 | static int hsusb_usb_read(void *_buf, unsigned len) |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 309 | { |
| 310 | int r; |
| 311 | unsigned xfer; |
| 312 | unsigned char *buf = _buf; |
| 313 | int count = 0; |
| 314 | |
| 315 | if (fastboot_state == STATE_ERROR) |
| 316 | goto oops; |
| 317 | |
| 318 | while (len > 0) { |
Shashank Mittal | 1cc65b0 | 2011-12-20 15:30:17 -0800 | [diff] [blame] | 319 | xfer = (len > MAX_USBFS_BULK_SIZE) ? MAX_USBFS_BULK_SIZE : len; |
Unnati Gandhi | 0c8e7c5 | 2014-07-17 14:33:09 +0530 | [diff] [blame] | 320 | req->buf = (unsigned char *)PA((addr_t)buf); |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 321 | req->length = xfer; |
| 322 | req->complete = req_complete; |
| 323 | r = udc_request_queue(out, req); |
| 324 | if (r < 0) { |
| 325 | dprintf(INFO, "usb_read() queue failed\n"); |
| 326 | goto oops; |
| 327 | } |
| 328 | event_wait(&txn_done); |
| 329 | |
| 330 | if (txn_status < 0) { |
| 331 | dprintf(INFO, "usb_read() transaction failed\n"); |
| 332 | goto oops; |
| 333 | } |
| 334 | |
| 335 | count += req->length; |
| 336 | buf += req->length; |
| 337 | len -= req->length; |
| 338 | |
| 339 | /* short transfer? */ |
| 340 | if (req->length != xfer) break; |
| 341 | } |
Hanumant Singh | 108cdc6 | 2012-12-11 16:48:49 -0800 | [diff] [blame] | 342 | /* |
| 343 | * Force reload of buffer from memory |
| 344 | * since transaction is complete now. |
| 345 | */ |
lijuang | c267675 | 2018-05-15 13:52:36 +0800 | [diff] [blame] | 346 | arch_invalidate_cache_range((addr_t)_buf, ROUNDUP(count, CACHE_LINE)); |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 347 | return count; |
| 348 | |
| 349 | oops: |
| 350 | fastboot_state = STATE_ERROR; |
| 351 | return -1; |
| 352 | } |
| 353 | |
Amol Jadi | 7c4316c | 2013-10-07 14:19:26 -0700 | [diff] [blame] | 354 | static int hsusb_usb_write(void *buf, unsigned len) |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 355 | { |
| 356 | int r; |
Channagoud Kadabi | ad50b6a | 2014-04-07 17:56:05 -0700 | [diff] [blame] | 357 | uint32_t xfer; |
| 358 | unsigned char *_buf = buf; |
| 359 | int count = 0; |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 360 | |
| 361 | if (fastboot_state == STATE_ERROR) |
| 362 | goto oops; |
| 363 | |
Channagoud Kadabi | ad50b6a | 2014-04-07 17:56:05 -0700 | [diff] [blame] | 364 | while (len > 0) { |
| 365 | xfer = (len > MAX_USBFS_BULK_SIZE) ? MAX_USBFS_BULK_SIZE : len; |
Unnati Gandhi | 0c8e7c5 | 2014-07-17 14:33:09 +0530 | [diff] [blame] | 366 | req->buf = (unsigned char *)PA((addr_t)_buf); |
Channagoud Kadabi | ad50b6a | 2014-04-07 17:56:05 -0700 | [diff] [blame] | 367 | req->length = xfer; |
| 368 | req->complete = req_complete; |
| 369 | r = udc_request_queue(in, req); |
| 370 | if (r < 0) { |
| 371 | dprintf(INFO, "usb_write() queue failed\n"); |
| 372 | goto oops; |
| 373 | } |
| 374 | event_wait(&txn_done); |
| 375 | if (txn_status < 0) { |
| 376 | dprintf(INFO, "usb_write() transaction failed\n"); |
| 377 | goto oops; |
| 378 | } |
| 379 | |
| 380 | count += req->length; |
| 381 | _buf += req->length; |
| 382 | len -= req->length; |
| 383 | |
| 384 | /* short transfer? */ |
| 385 | if (req->length != xfer) break; |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 386 | } |
Channagoud Kadabi | ad50b6a | 2014-04-07 17:56:05 -0700 | [diff] [blame] | 387 | |
| 388 | return count; |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 389 | |
| 390 | oops: |
| 391 | fastboot_state = STATE_ERROR; |
| 392 | return -1; |
| 393 | } |
| 394 | |
| 395 | void fastboot_ack(const char *code, const char *reason) |
| 396 | { |
Deepa Dinamani | 26bc2d3 | 2013-03-15 13:17:16 -0700 | [diff] [blame] | 397 | STACKBUF_DMA_ALIGN(response, MAX_RSP_SIZE); |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 398 | |
| 399 | if (fastboot_state != STATE_COMMAND) |
| 400 | return; |
| 401 | |
| 402 | if (reason == 0) |
| 403 | reason = ""; |
| 404 | |
Unnati Gandhi | 0c8e7c5 | 2014-07-17 14:33:09 +0530 | [diff] [blame] | 405 | snprintf((char *)response, MAX_RSP_SIZE, "%s%s", code, reason); |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 406 | fastboot_state = STATE_COMPLETE; |
| 407 | |
Unnati Gandhi | 0c8e7c5 | 2014-07-17 14:33:09 +0530 | [diff] [blame] | 408 | usb_if.usb_write(response, strlen((const char *)response)); |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 409 | |
| 410 | } |
| 411 | |
Shashank Mittal | 6a5609f | 2011-08-04 15:51:59 -0700 | [diff] [blame] | 412 | void fastboot_info(const char *reason) |
| 413 | { |
Deepa Dinamani | 26bc2d3 | 2013-03-15 13:17:16 -0700 | [diff] [blame] | 414 | STACKBUF_DMA_ALIGN(response, MAX_RSP_SIZE); |
Shashank Mittal | 6a5609f | 2011-08-04 15:51:59 -0700 | [diff] [blame] | 415 | |
| 416 | if (fastboot_state != STATE_COMMAND) |
| 417 | return; |
| 418 | |
| 419 | if (reason == 0) |
| 420 | return; |
| 421 | |
Unnati Gandhi | 0c8e7c5 | 2014-07-17 14:33:09 +0530 | [diff] [blame] | 422 | snprintf((char *)response, MAX_RSP_SIZE, "INFO%s", reason); |
Shashank Mittal | 6a5609f | 2011-08-04 15:51:59 -0700 | [diff] [blame] | 423 | |
Unnati Gandhi | 0c8e7c5 | 2014-07-17 14:33:09 +0530 | [diff] [blame] | 424 | usb_if.usb_write(response, strlen((const char *)response)); |
Shashank Mittal | 6a5609f | 2011-08-04 15:51:59 -0700 | [diff] [blame] | 425 | } |
| 426 | |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 427 | void fastboot_fail(const char *reason) |
| 428 | { |
| 429 | fastboot_ack("FAIL", reason); |
| 430 | } |
| 431 | |
| 432 | void fastboot_okay(const char *info) |
| 433 | { |
| 434 | fastboot_ack("OKAY", info); |
| 435 | } |
| 436 | |
Channagoud Kadabi | 0355016 | 2015-03-10 13:32:27 -0700 | [diff] [blame] | 437 | static void getvar_all() |
| 438 | { |
| 439 | struct fastboot_var *var; |
Mayank Grover | 351a75e | 2017-05-30 20:06:08 +0530 | [diff] [blame] | 440 | char getvar_all[256]; |
Channagoud Kadabi | 0355016 | 2015-03-10 13:32:27 -0700 | [diff] [blame] | 441 | |
| 442 | for (var = varlist; var; var = var->next) |
| 443 | { |
| 444 | strlcpy((char *) getvar_all, var->name, sizeof(getvar_all)); |
| 445 | strlcat((char *) getvar_all, ":", sizeof(getvar_all)); |
| 446 | strlcat((char *) getvar_all, var->value, sizeof(getvar_all)); |
| 447 | fastboot_info(getvar_all); |
| 448 | memset((void *) getvar_all, '\0', sizeof(getvar_all)); |
| 449 | } |
| 450 | fastboot_okay(""); |
| 451 | } |
| 452 | |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 453 | static void cmd_getvar(const char *arg, void *data, unsigned sz) |
| 454 | { |
| 455 | struct fastboot_var *var; |
| 456 | |
lijuang | 102dfa9 | 2015-10-09 18:31:03 +0800 | [diff] [blame] | 457 | #if CHECK_BAT_VOLTAGE |
| 458 | update_battery_status(); |
| 459 | #endif |
| 460 | |
Mayank Grover | 351a75e | 2017-05-30 20:06:08 +0530 | [diff] [blame] | 461 | |
Channagoud Kadabi | 0355016 | 2015-03-10 13:32:27 -0700 | [diff] [blame] | 462 | if (!strncmp("all", arg, strlen(arg))) |
| 463 | { |
| 464 | getvar_all(); |
| 465 | return; |
| 466 | } |
| 467 | |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 468 | for (var = varlist; var; var = var->next) { |
| 469 | if (!strcmp(var->name, arg)) { |
| 470 | fastboot_okay(var->value); |
| 471 | return; |
| 472 | } |
| 473 | } |
| 474 | fastboot_okay(""); |
| 475 | } |
| 476 | |
| 477 | static void cmd_download(const char *arg, void *data, unsigned sz) |
| 478 | { |
Deepa Dinamani | 26bc2d3 | 2013-03-15 13:17:16 -0700 | [diff] [blame] | 479 | STACKBUF_DMA_ALIGN(response, MAX_RSP_SIZE); |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 480 | unsigned len = hex2unsigned(arg); |
| 481 | int r; |
| 482 | |
| 483 | download_size = 0; |
| 484 | if (len > download_max) { |
| 485 | fastboot_fail("data too large"); |
| 486 | return; |
| 487 | } |
| 488 | |
Unnati Gandhi | 0c8e7c5 | 2014-07-17 14:33:09 +0530 | [diff] [blame] | 489 | snprintf((char *)response, MAX_RSP_SIZE, "DATA%08x", len); |
| 490 | if (usb_if.usb_write(response, strlen((const char *)response)) < 0) |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 491 | return; |
Channagoud Kadabi | 5389f37 | 2015-02-27 15:26:28 -0800 | [diff] [blame] | 492 | /* |
| 493 | * Discard the cache contents before starting the download |
| 494 | */ |
lijuang | c267675 | 2018-05-15 13:52:36 +0800 | [diff] [blame] | 495 | arch_invalidate_cache_range((addr_t) download_base, ROUNDUP(len, CACHE_LINE)); |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 496 | |
Amol Jadi | 7c4316c | 2013-10-07 14:19:26 -0700 | [diff] [blame] | 497 | r = usb_if.usb_read(download_base, len); |
Greg Grisco | d625055 | 2011-06-29 14:40:23 -0700 | [diff] [blame] | 498 | if ((r < 0) || ((unsigned) r != len)) { |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 499 | fastboot_state = STATE_ERROR; |
| 500 | return; |
| 501 | } |
| 502 | download_size = len; |
| 503 | fastboot_okay(""); |
| 504 | } |
| 505 | |
Parth Dixit | f8071f0 | 2017-09-27 17:59:30 +0530 | [diff] [blame] | 506 | int fboot_set_upload(void *buf, uint32_t buf_size) |
| 507 | { |
| 508 | /* sanity checks*/ |
| 509 | if((buf == NULL)||(buf_size > download_max)) |
| 510 | { |
| 511 | return ERR_INVALID_ARGS; |
| 512 | } |
| 513 | upload_base_addr = buf; |
| 514 | upload_size = buf_size; |
| 515 | return NO_ERROR; |
| 516 | } |
| 517 | |
| 518 | static void cmd_upload(const char *arg, void *data, unsigned sz) |
| 519 | { |
| 520 | STACKBUF_DMA_ALIGN(response, MAX_RSP_SIZE); |
| 521 | unsigned len = upload_size; |
| 522 | int r; |
| 523 | |
| 524 | if ((upload_base_addr == NULL)||(upload_size == 0)) { |
| 525 | fastboot_fail("invalid data"); |
| 526 | goto cleanup; |
| 527 | } |
| 528 | snprintf((char *)response, MAX_RSP_SIZE, "DATA%08x", len); |
| 529 | if (usb_if.usb_write(response, strlen((const char *)response)) < 0) |
| 530 | goto cleanup; |
| 531 | /* |
| 532 | * Discard the cache contents before starting the download |
| 533 | */ |
| 534 | arch_invalidate_cache_range((addr_t) upload_base_addr, len); |
| 535 | |
| 536 | r = usb_if.usb_write(upload_base_addr, len); |
| 537 | if ((r < 0) || ((unsigned) r != len)) { |
| 538 | fastboot_state = STATE_ERROR; |
| 539 | goto cleanup; |
| 540 | } |
| 541 | fastboot_okay(""); |
| 542 | cleanup: |
| 543 | upload_base_addr = NULL; |
| 544 | upload_size = 0; |
| 545 | return; |
| 546 | } |
| 547 | |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 548 | static void fastboot_command_loop(void) |
| 549 | { |
| 550 | struct fastboot_cmd *cmd; |
| 551 | int r; |
lijuang | d86b38e | 2015-10-13 18:13:01 +0800 | [diff] [blame] | 552 | #if CHECK_BAT_VOLTAGE |
| 553 | boolean is_first_erase_flash = false; |
| 554 | #endif |
| 555 | |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 556 | dprintf(INFO,"fastboot: processing commands\n"); |
| 557 | |
Deepa Dinamani | 26bc2d3 | 2013-03-15 13:17:16 -0700 | [diff] [blame] | 558 | uint8_t *buffer = (uint8_t *)memalign(CACHE_LINE, ROUNDUP(4096, CACHE_LINE)); |
| 559 | if (!buffer) |
| 560 | { |
| 561 | dprintf(CRITICAL, "Could not allocate memory for fastboot buffer\n."); |
| 562 | ASSERT(0); |
| 563 | } |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 564 | again: |
| 565 | while (fastboot_state != STATE_ERROR) { |
Amol Jadi | 5edf355 | 2013-07-23 14:15:34 -0700 | [diff] [blame] | 566 | |
| 567 | /* Read buffer must be cleared first. If buffer is not cleared, |
| 568 | * the original data in buf trailing the received command is |
| 569 | * interpreted as part of the command. |
| 570 | */ |
| 571 | memset(buffer, 0, MAX_RSP_SIZE); |
| 572 | arch_clean_invalidate_cache_range((addr_t) buffer, MAX_RSP_SIZE); |
| 573 | |
Amol Jadi | 7c4316c | 2013-10-07 14:19:26 -0700 | [diff] [blame] | 574 | r = usb_if.usb_read(buffer, MAX_RSP_SIZE); |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 575 | if (r < 0) break; |
| 576 | buffer[r] = 0; |
| 577 | dprintf(INFO,"fastboot: %s\n", buffer); |
| 578 | |
lijuang | d86b38e | 2015-10-13 18:13:01 +0800 | [diff] [blame] | 579 | #if CHECK_BAT_VOLTAGE |
| 580 | /* check battery voltage before erase or flash image */ |
| 581 | if (!strncmp((const char*) buffer, "getvar:partition-type", 21)) |
| 582 | is_first_erase_flash = true; |
| 583 | |
| 584 | if (is_first_erase_flash) { |
| 585 | if (!strncmp((const char*) buffer, "erase", 5) || |
| 586 | !strncmp((const char*) buffer, "flash", 5)) { |
| 587 | if (!target_battery_soc_ok()) { |
| 588 | dprintf(INFO,"fastboot: battery voltage: %d\n", |
| 589 | target_get_battery_voltage()); |
| 590 | fastboot_fail("Warning: battery's capacity is very low\n"); |
Mayank Grover | 3f5f97c | 2017-09-26 11:48:50 +0530 | [diff] [blame] | 591 | continue; |
lijuang | d86b38e | 2015-10-13 18:13:01 +0800 | [diff] [blame] | 592 | } |
| 593 | } |
| 594 | } |
| 595 | #endif |
| 596 | |
Channagoud Kadabi | 69c1673 | 2013-12-05 17:29:18 -0800 | [diff] [blame] | 597 | fastboot_state = STATE_COMMAND; |
| 598 | |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 599 | for (cmd = cmdlist; cmd; cmd = cmd->next) { |
| 600 | if (memcmp(buffer, cmd->prefix, cmd->prefix_len)) |
| 601 | continue; |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 602 | cmd->handle((const char*) buffer + cmd->prefix_len, |
| 603 | (void*) download_base, download_size); |
| 604 | if (fastboot_state == STATE_COMMAND) |
| 605 | fastboot_fail("unknown reason"); |
lijuang | d86b38e | 2015-10-13 18:13:01 +0800 | [diff] [blame] | 606 | |
| 607 | #if CHECK_BAT_VOLTAGE |
| 608 | if (!strncmp((const char*) buffer, "erase", 5) || |
| 609 | !strncmp((const char*) buffer, "flash", 5)) { |
| 610 | if (is_first_erase_flash) { |
| 611 | is_first_erase_flash = false; |
| 612 | } |
| 613 | } |
| 614 | #endif |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 615 | goto again; |
| 616 | } |
| 617 | |
| 618 | fastboot_fail("unknown command"); |
Amol Jadi | 5edf355 | 2013-07-23 14:15:34 -0700 | [diff] [blame] | 619 | |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 620 | } |
| 621 | fastboot_state = STATE_OFFLINE; |
| 622 | dprintf(INFO,"fastboot: oops!\n"); |
Deepa Dinamani | 26bc2d3 | 2013-03-15 13:17:16 -0700 | [diff] [blame] | 623 | free(buffer); |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 624 | } |
| 625 | |
| 626 | static int fastboot_handler(void *arg) |
| 627 | { |
| 628 | for (;;) { |
| 629 | event_wait(&usb_online); |
| 630 | fastboot_command_loop(); |
| 631 | } |
| 632 | return 0; |
| 633 | } |
| 634 | |
| 635 | static void fastboot_notify(struct udc_gadget *gadget, unsigned event) |
| 636 | { |
| 637 | if (event == UDC_EVENT_ONLINE) { |
| 638 | event_signal(&usb_online, 0); |
| 639 | } |
| 640 | } |
| 641 | |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 642 | int fastboot_init(void *base, unsigned size) |
| 643 | { |
tracychui | d184b91 | 2020-06-05 17:31:38 +0800 | [diff] [blame^] | 644 | /*[20200605][TracyChui] Implement get Serial Number start*/ |
| 645 | #if defined(ENABLE_PRODINFO_ACCESS) |
| 646 | char sn_buf[PRODINFO_MAX_ISN_LEN + 1]; |
| 647 | #else |
Amol Jadi | 5edf355 | 2013-07-23 14:15:34 -0700 | [diff] [blame] | 648 | char sn_buf[13]; |
tracychui | d184b91 | 2020-06-05 17:31:38 +0800 | [diff] [blame^] | 649 | #endif |
| 650 | /*[20200605][TracyChui] Implement get Serial Number end*/ |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 651 | thread_t *thr; |
| 652 | dprintf(INFO, "fastboot_init()\n"); |
| 653 | |
| 654 | download_base = base; |
| 655 | download_max = size; |
| 656 | |
Amol Jadi | 5edf355 | 2013-07-23 14:15:34 -0700 | [diff] [blame] | 657 | /* target specific initialization before going into fastboot. */ |
| 658 | target_fastboot_init(); |
| 659 | |
| 660 | /* setup serialno */ |
| 661 | target_serialno((unsigned char *) sn_buf); |
| 662 | dprintf(SPEW,"serial number: %s\n",sn_buf); |
| 663 | surf_udc_device.serialno = sn_buf; |
| 664 | |
Amol Jadi | 7c4316c | 2013-10-07 14:19:26 -0700 | [diff] [blame] | 665 | if(!strcmp(target_usb_controller(), "dwc")) |
| 666 | { |
| 667 | #ifdef USB30_SUPPORT |
Channagoud Kadabi | 728ef0a | 2014-02-04 17:11:08 -0800 | [diff] [blame] | 668 | surf_udc_device.t_usb_if = target_usb30_init(); |
| 669 | |
Amol Jadi | 7c4316c | 2013-10-07 14:19:26 -0700 | [diff] [blame] | 670 | /* initialize udc functions to use dwc controller */ |
| 671 | usb_if.udc_init = usb30_udc_init; |
| 672 | usb_if.udc_register_gadget = usb30_udc_register_gadget; |
| 673 | usb_if.udc_start = usb30_udc_start; |
| 674 | usb_if.udc_stop = usb30_udc_stop; |
| 675 | |
| 676 | usb_if.udc_endpoint_alloc = usb30_udc_endpoint_alloc; |
| 677 | usb_if.udc_request_alloc = usb30_udc_request_alloc; |
| 678 | usb_if.udc_request_free = usb30_udc_request_free; |
| 679 | |
| 680 | usb_if.usb_read = usb30_usb_read; |
| 681 | usb_if.usb_write = usb30_usb_write; |
| 682 | #else |
| 683 | dprintf(CRITICAL, "USB30 needs to be enabled for this target.\n"); |
| 684 | ASSERT(0); |
| 685 | #endif |
| 686 | } |
| 687 | else |
| 688 | { |
| 689 | /* initialize udc functions to use the default chipidea controller */ |
| 690 | usb_if.udc_init = udc_init; |
| 691 | usb_if.udc_register_gadget = udc_register_gadget; |
| 692 | usb_if.udc_start = udc_start; |
| 693 | usb_if.udc_stop = udc_stop; |
| 694 | |
| 695 | usb_if.udc_endpoint_alloc = udc_endpoint_alloc; |
| 696 | usb_if.udc_request_alloc = udc_request_alloc; |
| 697 | usb_if.udc_request_free = udc_request_free; |
| 698 | |
| 699 | usb_if.usb_read = hsusb_usb_read; |
| 700 | usb_if.usb_write = hsusb_usb_write; |
| 701 | } |
| 702 | |
Amol Jadi | 5edf355 | 2013-07-23 14:15:34 -0700 | [diff] [blame] | 703 | /* register udc device */ |
Amol Jadi | 7c4316c | 2013-10-07 14:19:26 -0700 | [diff] [blame] | 704 | usb_if.udc_init(&surf_udc_device); |
Amol Jadi | 5edf355 | 2013-07-23 14:15:34 -0700 | [diff] [blame] | 705 | |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 706 | event_init(&usb_online, 0, EVENT_FLAG_AUTOUNSIGNAL); |
| 707 | event_init(&txn_done, 0, EVENT_FLAG_AUTOUNSIGNAL); |
| 708 | |
Amol Jadi | 7c4316c | 2013-10-07 14:19:26 -0700 | [diff] [blame] | 709 | in = usb_if.udc_endpoint_alloc(UDC_TYPE_BULK_IN, 512); |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 710 | if (!in) |
| 711 | goto fail_alloc_in; |
Amol Jadi | 7c4316c | 2013-10-07 14:19:26 -0700 | [diff] [blame] | 712 | out = usb_if.udc_endpoint_alloc(UDC_TYPE_BULK_OUT, 512); |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 713 | if (!out) |
| 714 | goto fail_alloc_out; |
| 715 | |
| 716 | fastboot_endpoints[0] = in; |
| 717 | fastboot_endpoints[1] = out; |
| 718 | |
Amol Jadi | 7c4316c | 2013-10-07 14:19:26 -0700 | [diff] [blame] | 719 | req = usb_if.udc_request_alloc(); |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 720 | if (!req) |
| 721 | goto fail_alloc_req; |
| 722 | |
Amol Jadi | 5edf355 | 2013-07-23 14:15:34 -0700 | [diff] [blame] | 723 | /* register gadget */ |
Amol Jadi | 7c4316c | 2013-10-07 14:19:26 -0700 | [diff] [blame] | 724 | if (usb_if.udc_register_gadget(&fastboot_gadget)) |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 725 | goto fail_udc_register; |
| 726 | |
| 727 | fastboot_register("getvar:", cmd_getvar); |
| 728 | fastboot_register("download:", cmd_download); |
Parth Dixit | f8071f0 | 2017-09-27 17:59:30 +0530 | [diff] [blame] | 729 | fastboot_register("upload", cmd_upload); |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 730 | fastboot_publish("version", "0.5"); |
| 731 | |
Mayank Grover | c19c2e5 | 2017-12-19 14:43:23 +0530 | [diff] [blame] | 732 | thr = thread_create("fastboot", fastboot_handler, 0, DEFAULT_PRIORITY, DEFAULT_STACK_SIZE); |
neetid | 32ba847 | 2011-12-07 16:34:06 -0800 | [diff] [blame] | 733 | if (!thr) |
| 734 | { |
| 735 | goto fail_alloc_in; |
| 736 | } |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 737 | thread_resume(thr); |
Amol Jadi | 5edf355 | 2013-07-23 14:15:34 -0700 | [diff] [blame] | 738 | |
Amol Jadi | 7c4316c | 2013-10-07 14:19:26 -0700 | [diff] [blame] | 739 | usb_if.udc_start(); |
Amol Jadi | 5edf355 | 2013-07-23 14:15:34 -0700 | [diff] [blame] | 740 | |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 741 | return 0; |
| 742 | |
| 743 | fail_udc_register: |
Amol Jadi | 7c4316c | 2013-10-07 14:19:26 -0700 | [diff] [blame] | 744 | usb_if.udc_request_free(req); |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 745 | fail_alloc_req: |
Amol Jadi | 7c4316c | 2013-10-07 14:19:26 -0700 | [diff] [blame] | 746 | usb_if.udc_endpoint_free(out); |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 747 | fail_alloc_out: |
Amol Jadi | 7c4316c | 2013-10-07 14:19:26 -0700 | [diff] [blame] | 748 | usb_if.udc_endpoint_free(in); |
Brian Swetland | 9c4c075 | 2009-01-25 16:23:50 -0800 | [diff] [blame] | 749 | fail_alloc_in: |
| 750 | return -1; |
| 751 | } |
Amol Jadi | 7c4316c | 2013-10-07 14:19:26 -0700 | [diff] [blame] | 752 | |
| 753 | void fastboot_stop(void) |
| 754 | { |
| 755 | usb_if.udc_stop(); |
| 756 | } |