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[project/bcm63xx/u-boot.git] / drivers / usb / gadget / f_sdp.c
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);
Broadcom-s U-Boot