1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * f_sdp.c -- USB HID Serial Download Protocol 4 * 5 * Copyright (C) 2017 Toradex 6 * Author: Stefan Agner <stefan.agner@toradex.com> 7 * 8 * This file implements the Serial Download Protocol (SDP) as specified in 9 * the i.MX 6 Reference Manual. The SDP is a USB HID based protocol and 10 * allows to download images directly to memory. The implementation 11 * works with the imx_loader (imx_usb) USB client software on host side. 12 * 13 * Not all commands are implemented, e.g. WRITE_REGISTER, DCD_WRITE and 14 * SKIP_DCD_HEADER are only stubs. 15 * 16 * Parts of the implementation are based on f_dfu and f_thor. 17 */ 18 19 #include <errno.h> 20 #include <common.h> 21 #include <console.h> 22 #include <malloc.h> 23 24 #include <linux/usb/ch9.h> 25 #include <linux/usb/gadget.h> 26 #include <linux/usb/composite.h> 27 28 #include <asm/io.h> 29 #include <g_dnl.h> 30 #include <sdp.h> 31 #include <spl.h> 32 #include <image.h> 33 #include <imximage.h> 34 #include <watchdog.h> 35 36 #define HID_REPORT_ID_MASK 0x000000ff 37 38 /* 39 * HID class requests 40 */ 41 #define HID_REQ_GET_REPORT 0x01 42 #define HID_REQ_GET_IDLE 0x02 43 #define HID_REQ_GET_PROTOCOL 0x03 44 #define HID_REQ_SET_REPORT 0x09 45 #define HID_REQ_SET_IDLE 0x0A 46 #define HID_REQ_SET_PROTOCOL 0x0B 47 48 #define HID_USAGE_PAGE_LEN 76 49 50 struct hid_report { 51 u8 usage_page[HID_USAGE_PAGE_LEN]; 52 } __packed; 53 54 #define SDP_READ_REGISTER 0x0101 55 #define SDP_WRITE_REGISTER 0x0202 56 #define SDP_WRITE_FILE 0x0404 57 #define SDP_ERROR_STATUS 0x0505 58 #define SDP_DCD_WRITE 0x0a0a 59 #define SDP_JUMP_ADDRESS 0x0b0b 60 #define SDP_SKIP_DCD_HEADER 0x0c0c 61 62 #define SDP_SECURITY_CLOSED 0x12343412 63 #define SDP_SECURITY_OPEN 0x56787856 64 65 #define SDP_WRITE_FILE_COMPLETE 0x88888888 66 #define SDP_WRITE_REGISTER_COMPLETE 0x128A8A12 67 #define SDP_SKIP_DCD_HEADER_COMPLETE 0x900DD009 68 #define SDP_ERROR_IMXHEADER 0x000a0533 69 70 #define SDP_COMMAND_LEN 16 71 72 struct sdp_command { 73 u16 cmd; 74 u32 addr; 75 u8 format; 76 u32 cnt; 77 u32 data; 78 u8 rsvd; 79 } __packed; 80 81 enum sdp_state { 82 SDP_STATE_IDLE, 83 SDP_STATE_RX_DCD_DATA, 84 SDP_STATE_RX_FILE_DATA, 85 SDP_STATE_TX_SEC_CONF, 86 SDP_STATE_TX_SEC_CONF_BUSY, 87 SDP_STATE_TX_REGISTER, 88 SDP_STATE_TX_REGISTER_BUSY, 89 SDP_STATE_TX_STATUS, 90 SDP_STATE_TX_STATUS_BUSY, 91 SDP_STATE_JUMP, 92 }; 93 94 struct f_sdp { 95 struct usb_function usb_function; 96 97 struct usb_descriptor_header **function; 98 99 u8 altsetting; 100 enum sdp_state state; 101 enum sdp_state next_state; 102 u32 dnl_address; 103 u32 dnl_bytes; 104 u32 dnl_bytes_remaining; 105 u32 jmp_address; 106 bool always_send_status; 107 u32 error_status; 108 109 /* EP0 request */ 110 struct usb_request *req; 111 112 /* EP1 IN */ 113 struct usb_ep *in_ep; 114 struct usb_request *in_req; 115 116 bool configuration_done; 117 }; 118 119 static struct f_sdp *sdp_func; 120 121 static inline struct f_sdp *func_to_sdp(struct usb_function *f) 122 { 123 return container_of(f, struct f_sdp, usb_function); 124 } 125 126 static struct usb_interface_descriptor sdp_intf_runtime = { 127 .bLength = sizeof(sdp_intf_runtime), 128 .bDescriptorType = USB_DT_INTERFACE, 129 .bAlternateSetting = 0, 130 .bNumEndpoints = 1, 131 .bInterfaceClass = USB_CLASS_HID, 132 .bInterfaceSubClass = 0, 133 .bInterfaceProtocol = 0, 134 /* .iInterface = DYNAMIC */ 135 }; 136 137 /* HID configuration */ 138 static struct usb_class_hid_descriptor sdp_hid_desc = { 139 .bLength = sizeof(sdp_hid_desc), 140 .bDescriptorType = USB_DT_CS_DEVICE, 141 142 .bcdCDC = __constant_cpu_to_le16(0x0110), 143 .bCountryCode = 0, 144 .bNumDescriptors = 1, 145 146 .bDescriptorType0 = USB_DT_HID_REPORT, 147 .wDescriptorLength0 = HID_USAGE_PAGE_LEN, 148 }; 149 150 static struct usb_endpoint_descriptor in_desc = { 151 .bLength = USB_DT_ENDPOINT_SIZE, 152 .bDescriptorType = USB_DT_ENDPOINT, /*USB_DT_CS_ENDPOINT*/ 153 154 .bEndpointAddress = 1 | USB_DIR_IN, 155 .bmAttributes = USB_ENDPOINT_XFER_INT, 156 .wMaxPacketSize = 64, 157 .bInterval = 1, 158 }; 159 160 static struct usb_descriptor_header *sdp_runtime_descs[] = { 161 (struct usb_descriptor_header *)&sdp_intf_runtime, 162 (struct usb_descriptor_header *)&sdp_hid_desc, 163 (struct usb_descriptor_header *)&in_desc, 164 NULL, 165 }; 166 167 /* This is synchronized with what the SoC implementation reports */ 168 static struct hid_report sdp_hid_report = { 169 .usage_page = { 170 0x06, 0x00, 0xff, /* Usage Page */ 171 0x09, 0x01, /* Usage (Pointer?) */ 172 0xa1, 0x01, /* Collection */ 173 174 0x85, 0x01, /* Report ID */ 175 0x19, 0x01, /* Usage Minimum */ 176 0x29, 0x01, /* Usage Maximum */ 177 0x15, 0x00, /* Local Minimum */ 178 0x26, 0xFF, 0x00, /* Local Maximum? */ 179 0x75, 0x08, /* Report Size */ 180 0x95, 0x10, /* Report Count */ 181 0x91, 0x02, /* Output Data */ 182 183 0x85, 0x02, /* Report ID */ 184 0x19, 0x01, /* Usage Minimum */ 185 0x29, 0x01, /* Usage Maximum */ 186 0x15, 0x00, /* Local Minimum */ 187 0x26, 0xFF, 0x00, /* Local Maximum? */ 188 0x75, 0x80, /* Report Size 128 */ 189 0x95, 0x40, /* Report Count */ 190 0x91, 0x02, /* Output Data */ 191 192 0x85, 0x03, /* Report ID */ 193 0x19, 0x01, /* Usage Minimum */ 194 0x29, 0x01, /* Usage Maximum */ 195 0x15, 0x00, /* Local Minimum */ 196 0x26, 0xFF, 0x00, /* Local Maximum? */ 197 0x75, 0x08, /* Report Size 8 */ 198 0x95, 0x04, /* Report Count */ 199 0x81, 0x02, /* Input Data */ 200 201 0x85, 0x04, /* Report ID */ 202 0x19, 0x01, /* Usage Minimum */ 203 0x29, 0x01, /* Usage Maximum */ 204 0x15, 0x00, /* Local Minimum */ 205 0x26, 0xFF, 0x00, /* Local Maximum? */ 206 0x75, 0x08, /* Report Size 8 */ 207 0x95, 0x40, /* Report Count */ 208 0x81, 0x02, /* Input Data */ 209 0xc0 210 }, 211 }; 212 213 static const char sdp_name[] = "Serial Downloader Protocol"; 214 215 /* 216 * static strings, in UTF-8 217 */ 218 static struct usb_string strings_sdp_generic[] = { 219 [0].s = sdp_name, 220 { } /* end of list */ 221 }; 222 223 static struct usb_gadget_strings stringtab_sdp_generic = { 224 .language = 0x0409, /* en-us */ 225 .strings = strings_sdp_generic, 226 }; 227 228 static struct usb_gadget_strings *sdp_generic_strings[] = { 229 &stringtab_sdp_generic, 230 NULL, 231 }; 232 233 static inline void *sdp_ptr(u32 val) 234 { 235 return (void *)(uintptr_t)val; 236 } 237 238 static void sdp_rx_command_complete(struct usb_ep *ep, struct usb_request *req) 239 { 240 struct f_sdp *sdp = req->context; 241 int status = req->status; 242 u8 *data = req->buf; 243 u8 report = data[0]; 244 245 if (status != 0) { 246 pr_err("Status: %d\n", status); 247 return; 248 } 249 250 if (report != 1) { 251 pr_err("Unexpected report %d\n", report); 252 return; 253 } 254 255 struct sdp_command *cmd = req->buf + 1; 256 257 debug("%s: command: %04x, addr: %08x, cnt: %u\n", 258 __func__, be16_to_cpu(cmd->cmd), 259 be32_to_cpu(cmd->addr), be32_to_cpu(cmd->cnt)); 260 261 switch (be16_to_cpu(cmd->cmd)) { 262 case SDP_READ_REGISTER: 263 sdp->always_send_status = false; 264 sdp->error_status = 0x0; 265 266 sdp->state = SDP_STATE_TX_SEC_CONF; 267 sdp->dnl_address = be32_to_cpu(cmd->addr); 268 sdp->dnl_bytes_remaining = be32_to_cpu(cmd->cnt); 269 sdp->next_state = SDP_STATE_TX_REGISTER; 270 printf("Reading %d registers at 0x%08x... ", 271 sdp->dnl_bytes_remaining, sdp->dnl_address); 272 break; 273 case SDP_WRITE_FILE: 274 sdp->always_send_status = true; 275 sdp->error_status = SDP_WRITE_FILE_COMPLETE; 276 277 sdp->state = SDP_STATE_RX_FILE_DATA; 278 sdp->dnl_address = be32_to_cpu(cmd->addr); 279 sdp->dnl_bytes_remaining = be32_to_cpu(cmd->cnt); 280 sdp->dnl_bytes = sdp->dnl_bytes_remaining; 281 sdp->next_state = SDP_STATE_IDLE; 282 283 printf("Downloading file of size %d to 0x%08x... ", 284 sdp->dnl_bytes_remaining, sdp->dnl_address); 285 286 break; 287 case SDP_ERROR_STATUS: 288 sdp->always_send_status = true; 289 sdp->error_status = 0; 290 291 sdp->state = SDP_STATE_TX_SEC_CONF; 292 sdp->next_state = SDP_STATE_IDLE; 293 break; 294 case SDP_DCD_WRITE: 295 sdp->always_send_status = true; 296 sdp->error_status = SDP_WRITE_REGISTER_COMPLETE; 297 298 sdp->state = SDP_STATE_RX_DCD_DATA; 299 sdp->dnl_bytes_remaining = be32_to_cpu(cmd->cnt); 300 sdp->next_state = SDP_STATE_IDLE; 301 break; 302 case SDP_JUMP_ADDRESS: 303 sdp->always_send_status = false; 304 sdp->error_status = 0; 305 306 sdp->jmp_address = be32_to_cpu(cmd->addr); 307 sdp->state = SDP_STATE_TX_SEC_CONF; 308 sdp->next_state = SDP_STATE_JUMP; 309 break; 310 case SDP_SKIP_DCD_HEADER: 311 sdp->always_send_status = true; 312 sdp->error_status = SDP_SKIP_DCD_HEADER_COMPLETE; 313 314 /* Ignore command, DCD not supported anyway */ 315 sdp->state = SDP_STATE_TX_SEC_CONF; 316 sdp->next_state = SDP_STATE_IDLE; 317 break; 318 default: 319 pr_err("Unknown command: %04x\n", be16_to_cpu(cmd->cmd)); 320 } 321 } 322 323 static void sdp_rx_data_complete(struct usb_ep *ep, struct usb_request *req) 324 { 325 struct f_sdp *sdp = req->context; 326 int status = req->status; 327 u8 *data = req->buf; 328 u8 report = data[0]; 329 int datalen = req->length - 1; 330 331 if (status != 0) { 332 pr_err("Status: %d\n", status); 333 return; 334 } 335 336 if (report != 2) { 337 pr_err("Unexpected report %d\n", report); 338 return; 339 } 340 341 if (sdp->dnl_bytes_remaining < datalen) { 342 /* 343 * Some USB stacks require to send a complete buffer as 344 * specified in the HID descriptor. This leads to longer 345 * transfers than the file length, no problem for us. 346 */ 347 sdp->dnl_bytes_remaining = 0; 348 } else { 349 sdp->dnl_bytes_remaining -= datalen; 350 } 351 352 if (sdp->state == SDP_STATE_RX_FILE_DATA) { 353 memcpy(sdp_ptr(sdp->dnl_address), req->buf + 1, datalen); 354 sdp->dnl_address += datalen; 355 } 356 357 if (sdp->dnl_bytes_remaining) 358 return; 359 360 #ifndef CONFIG_SPL_BUILD 361 env_set_hex("filesize", sdp->dnl_bytes); 362 #endif 363 printf("done\n"); 364 365 switch (sdp->state) { 366 case SDP_STATE_RX_FILE_DATA: 367 sdp->state = SDP_STATE_TX_SEC_CONF; 368 break; 369 case SDP_STATE_RX_DCD_DATA: 370 sdp->state = SDP_STATE_TX_SEC_CONF; 371 break; 372 default: 373 pr_err("Invalid state: %d\n", sdp->state); 374 } 375 } 376 377 static void sdp_tx_complete(struct usb_ep *ep, struct usb_request *req) 378 { 379 struct f_sdp *sdp = req->context; 380 int status = req->status; 381 382 if (status != 0) { 383 pr_err("Status: %d\n", status); 384 return; 385 } 386 387 switch (sdp->state) { 388 case SDP_STATE_TX_SEC_CONF_BUSY: 389 /* Not all commands require status report */ 390 if (sdp->always_send_status || sdp->error_status) 391 sdp->state = SDP_STATE_TX_STATUS; 392 else 393 sdp->state = sdp->next_state; 394 395 break; 396 case SDP_STATE_TX_STATUS_BUSY: 397 sdp->state = sdp->next_state; 398 break; 399 case SDP_STATE_TX_REGISTER_BUSY: 400 if (sdp->dnl_bytes_remaining) 401 sdp->state = SDP_STATE_TX_REGISTER; 402 else 403 sdp->state = SDP_STATE_IDLE; 404 break; 405 default: 406 pr_err("Wrong State: %d\n", sdp->state); 407 sdp->state = SDP_STATE_IDLE; 408 break; 409 } 410 debug("%s complete --> %d, %d/%d\n", ep->name, 411 status, req->actual, req->length); 412 } 413 414 static int sdp_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl) 415 { 416 struct usb_gadget *gadget = f->config->cdev->gadget; 417 struct usb_request *req = f->config->cdev->req; 418 struct f_sdp *sdp = f->config->cdev->req->context; 419 u16 len = le16_to_cpu(ctrl->wLength); 420 u16 w_value = le16_to_cpu(ctrl->wValue); 421 int value = 0; 422 u8 req_type = ctrl->bRequestType & USB_TYPE_MASK; 423 424 debug("w_value: 0x%04x len: 0x%04x\n", w_value, len); 425 debug("req_type: 0x%02x ctrl->bRequest: 0x%02x sdp->state: %d\n", 426 req_type, ctrl->bRequest, sdp->state); 427 428 if (req_type == USB_TYPE_STANDARD) { 429 if (ctrl->bRequest == USB_REQ_GET_DESCRIPTOR) { 430 /* Send HID report descriptor */ 431 value = min(len, (u16) sizeof(sdp_hid_report)); 432 memcpy(req->buf, &sdp_hid_report, value); 433 sdp->configuration_done = true; 434 } 435 } 436 437 if (req_type == USB_TYPE_CLASS) { 438 int report = w_value & HID_REPORT_ID_MASK; 439 440 /* HID (SDP) request */ 441 switch (ctrl->bRequest) { 442 case HID_REQ_SET_REPORT: 443 switch (report) { 444 case 1: 445 value = SDP_COMMAND_LEN + 1; 446 req->complete = sdp_rx_command_complete; 447 break; 448 case 2: 449 value = len; 450 req->complete = sdp_rx_data_complete; 451 break; 452 } 453 } 454 } 455 456 if (value >= 0) { 457 req->length = value; 458 req->zero = value < len; 459 value = usb_ep_queue(gadget->ep0, req, 0); 460 if (value < 0) { 461 debug("ep_queue --> %d\n", value); 462 req->status = 0; 463 } 464 } 465 466 return value; 467 } 468 469 static int sdp_bind(struct usb_configuration *c, struct usb_function *f) 470 { 471 struct usb_gadget *gadget = c->cdev->gadget; 472 struct usb_composite_dev *cdev = c->cdev; 473 struct f_sdp *sdp = func_to_sdp(f); 474 int rv = 0, id; 475 476 id = usb_interface_id(c, f); 477 if (id < 0) 478 return id; 479 sdp_intf_runtime.bInterfaceNumber = id; 480 481 struct usb_ep *ep; 482 483 /* allocate instance-specific endpoints */ 484 ep = usb_ep_autoconfig(gadget, &in_desc); 485 if (!ep) { 486 rv = -ENODEV; 487 goto error; 488 } 489 490 sdp->in_ep = ep; /* Store IN EP for enabling @ setup */ 491 492 cdev->req->context = sdp; 493 494 error: 495 return rv; 496 } 497 498 static void sdp_unbind(struct usb_configuration *c, struct usb_function *f) 499 { 500 free(sdp_func); 501 sdp_func = NULL; 502 } 503 504 static struct usb_request *alloc_ep_req(struct usb_ep *ep, unsigned length) 505 { 506 struct usb_request *req; 507 508 req = usb_ep_alloc_request(ep, 0); 509 if (!req) 510 return req; 511 512 req->length = length; 513 req->buf = memalign(CONFIG_SYS_CACHELINE_SIZE, length); 514 if (!req->buf) { 515 usb_ep_free_request(ep, req); 516 req = NULL; 517 } 518 519 return req; 520 } 521 522 523 static struct usb_request *sdp_start_ep(struct usb_ep *ep) 524 { 525 struct usb_request *req; 526 527 req = alloc_ep_req(ep, 64); 528 debug("%s: ep:%p req:%p\n", __func__, ep, req); 529 530 if (!req) 531 return NULL; 532 533 memset(req->buf, 0, req->length); 534 req->complete = sdp_tx_complete; 535 536 return req; 537 } 538 static int sdp_set_alt(struct usb_function *f, unsigned intf, unsigned alt) 539 { 540 struct f_sdp *sdp = func_to_sdp(f); 541 struct usb_composite_dev *cdev = f->config->cdev; 542 int result; 543 544 debug("%s: intf: %d alt: %d\n", __func__, intf, alt); 545 546 result = usb_ep_enable(sdp->in_ep, &in_desc); 547 if (result) 548 return result; 549 sdp->in_req = sdp_start_ep(sdp->in_ep); 550 sdp->in_req->context = sdp; 551 552 sdp->in_ep->driver_data = cdev; /* claim */ 553 554 sdp->altsetting = alt; 555 sdp->state = SDP_STATE_IDLE; 556 557 return 0; 558 } 559 560 static int sdp_get_alt(struct usb_function *f, unsigned intf) 561 { 562 struct f_sdp *sdp = func_to_sdp(f); 563 564 return sdp->altsetting; 565 } 566 567 static void sdp_disable(struct usb_function *f) 568 { 569 struct f_sdp *sdp = func_to_sdp(f); 570 571 usb_ep_disable(sdp->in_ep); 572 573 if (sdp->in_req) { 574 free(sdp->in_req); 575 sdp->in_req = NULL; 576 } 577 } 578 579 static int sdp_bind_config(struct usb_configuration *c) 580 { 581 int status; 582 583 if (!sdp_func) { 584 sdp_func = memalign(CONFIG_SYS_CACHELINE_SIZE, sizeof(*sdp_func)); 585 if (!sdp_func) 586 return -ENOMEM; 587 } 588 589 memset(sdp_func, 0, sizeof(*sdp_func)); 590 591 sdp_func->usb_function.name = "sdp"; 592 sdp_func->usb_function.hs_descriptors = sdp_runtime_descs; 593 sdp_func->usb_function.descriptors = sdp_runtime_descs; 594 sdp_func->usb_function.bind = sdp_bind; 595 sdp_func->usb_function.unbind = sdp_unbind; 596 sdp_func->usb_function.set_alt = sdp_set_alt; 597 sdp_func->usb_function.get_alt = sdp_get_alt; 598 sdp_func->usb_function.disable = sdp_disable; 599 sdp_func->usb_function.strings = sdp_generic_strings; 600 sdp_func->usb_function.setup = sdp_setup; 601 602 status = usb_add_function(c, &sdp_func->usb_function); 603 604 return status; 605 } 606 607 int sdp_init(int controller_index) 608 { 609 printf("SDP: initialize...\n"); 610 while (!sdp_func->configuration_done) { 611 if (ctrlc()) { 612 puts("\rCTRL+C - Operation aborted.\n"); 613 return 1; 614 } 615 616 WATCHDOG_RESET(); 617 usb_gadget_handle_interrupts(controller_index); 618 } 619 620 return 0; 621 } 622 623 static u32 sdp_jump_imxheader(void *address) 624 { 625 flash_header_v2_t *headerv2 = address; 626 ulong (*entry)(void); 627 628 if (headerv2->header.tag != IVT_HEADER_TAG) { 629 printf("Header Tag is not an IMX image\n"); 630 return SDP_ERROR_IMXHEADER; 631 } 632 633 printf("Jumping to 0x%08x\n", headerv2->entry); 634 entry = sdp_ptr(headerv2->entry); 635 entry(); 636 637 /* The image probably never returns hence we won't reach that point */ 638 return 0; 639 } 640 641 static void sdp_handle_in_ep(void) 642 { 643 u8 *data = sdp_func->in_req->buf; 644 u32 status; 645 int datalen; 646 647 switch (sdp_func->state) { 648 case SDP_STATE_TX_SEC_CONF: 649 debug("Report 3: HAB security\n"); 650 data[0] = 3; 651 652 status = SDP_SECURITY_OPEN; 653 memcpy(&data[1], &status, 4); 654 sdp_func->in_req->length = 5; 655 usb_ep_queue(sdp_func->in_ep, sdp_func->in_req, 0); 656 sdp_func->state = SDP_STATE_TX_SEC_CONF_BUSY; 657 break; 658 659 case SDP_STATE_TX_STATUS: 660 debug("Report 4: Status\n"); 661 data[0] = 4; 662 663 memcpy(&data[1], &sdp_func->error_status, 4); 664 sdp_func->in_req->length = 65; 665 usb_ep_queue(sdp_func->in_ep, sdp_func->in_req, 0); 666 sdp_func->state = SDP_STATE_TX_STATUS_BUSY; 667 break; 668 case SDP_STATE_TX_REGISTER: 669 debug("Report 4: Register Values\n"); 670 data[0] = 4; 671 672 datalen = sdp_func->dnl_bytes_remaining; 673 674 if (datalen > 64) 675 datalen = 64; 676 677 memcpy(&data[1], sdp_ptr(sdp_func->dnl_address), datalen); 678 sdp_func->in_req->length = 65; 679 680 sdp_func->dnl_bytes_remaining -= datalen; 681 sdp_func->dnl_address += datalen; 682 683 usb_ep_queue(sdp_func->in_ep, sdp_func->in_req, 0); 684 sdp_func->state = SDP_STATE_TX_REGISTER_BUSY; 685 break; 686 case SDP_STATE_JUMP: 687 printf("Jumping to header at 0x%08x\n", sdp_func->jmp_address); 688 status = sdp_jump_imxheader(sdp_ptr(sdp_func->jmp_address)); 689 690 /* If imx header fails, try some U-Boot specific headers */ 691 if (status) { 692 #ifdef CONFIG_SPL_BUILD 693 /* In SPL, allow jumps to U-Boot images */ 694 struct spl_image_info spl_image = {}; 695 spl_parse_image_header(&spl_image, 696 (struct image_header *)sdp_func->jmp_address); 697 jump_to_image_no_args(&spl_image); 698 #else 699 /* In U-Boot, allow jumps to scripts */ 700 source(sdp_func->jmp_address, "script@1"); 701 #endif 702 } 703 704 sdp_func->next_state = SDP_STATE_IDLE; 705 sdp_func->error_status = status; 706 707 /* Only send Report 4 if there was an error */ 708 if (status) 709 sdp_func->state = SDP_STATE_TX_STATUS; 710 else 711 sdp_func->state = SDP_STATE_IDLE; 712 break; 713 default: 714 break; 715 }; 716 } 717 718 void sdp_handle(int controller_index) 719 { 720 printf("SDP: handle requests...\n"); 721 while (1) { 722 if (ctrlc()) { 723 puts("\rCTRL+C - Operation aborted.\n"); 724 return; 725 } 726 727 WATCHDOG_RESET(); 728 usb_gadget_handle_interrupts(controller_index); 729 730 sdp_handle_in_ep(); 731 } 732 } 733 734 int sdp_add(struct usb_configuration *c) 735 { 736 int id; 737 738 id = usb_string_id(c->cdev); 739 if (id < 0) 740 return id; 741 strings_sdp_generic[0].id = id; 742 sdp_intf_runtime.iInterface = id; 743 744 debug("%s: cdev: %p gadget: %p gadget->ep0: %p\n", __func__, 745 c->cdev, c->cdev->gadget, c->cdev->gadget->ep0); 746 747 return sdp_bind_config(c); 748 } 749 750 DECLARE_GADGET_BIND_CALLBACK(usb_dnl_sdp, sdp_add); 751