usb: gadget: sdp: fix pointer cast warnings for 64bit archs
[people/ms/u-boot.git] / drivers / usb / gadget / f_sdp.c
1 /*
2  * f_sdp.c -- USB HID Serial Download Protocol
3  *
4  * Copyright (C) 2017 Toradex
5  * Author: Stefan Agner <stefan.agner@toradex.com>
6  *
7  * This file implements the Serial Download Protocol (SDP) as specified in
8  * the i.MX 6 Reference Manual. The SDP is a USB HID based protocol and
9  * allows to download images directly to memory. The implementation
10  * works with the imx_loader (imx_usb) USB client software on host side.
11  *
12  * Not all commands are implemented, e.g. WRITE_REGISTER, DCD_WRITE and
13  * SKIP_DCD_HEADER are only stubs.
14  *
15  * Parts of the implementation are based on f_dfu and f_thor.
16  *
17  * SPDX-License-Identifier:     GPL-2.0+
18  */
19
20 #include <errno.h>
21 #include <common.h>
22 #include <console.h>
23 #include <malloc.h>
24
25 #include <linux/usb/ch9.h>
26 #include <linux/usb/gadget.h>
27 #include <linux/usb/composite.h>
28
29 #include <asm/io.h>
30 #include <g_dnl.h>
31 #include <sdp.h>
32 #include <spl.h>
33 #include <image.h>
34 #include <imximage.h>
35 #include <watchdog.h>
36
37 #define HID_REPORT_ID_MASK      0x000000ff
38
39 /*
40  * HID class requests
41  */
42 #define HID_REQ_GET_REPORT              0x01
43 #define HID_REQ_GET_IDLE                0x02
44 #define HID_REQ_GET_PROTOCOL            0x03
45 #define HID_REQ_SET_REPORT              0x09
46 #define HID_REQ_SET_IDLE                0x0A
47 #define HID_REQ_SET_PROTOCOL            0x0B
48
49 #define HID_USAGE_PAGE_LEN              76
50
51 struct hid_report {
52         u8 usage_page[HID_USAGE_PAGE_LEN];
53 } __packed;
54
55 #define SDP_READ_REGISTER       0x0101
56 #define SDP_WRITE_REGISTER      0x0202
57 #define SDP_WRITE_FILE          0x0404
58 #define SDP_ERROR_STATUS        0x0505
59 #define SDP_DCD_WRITE           0x0a0a
60 #define SDP_JUMP_ADDRESS        0x0b0b
61 #define SDP_SKIP_DCD_HEADER     0x0c0c
62
63 #define SDP_SECURITY_CLOSED             0x12343412
64 #define SDP_SECURITY_OPEN               0x56787856
65
66 #define SDP_WRITE_FILE_COMPLETE         0x88888888
67 #define SDP_WRITE_REGISTER_COMPLETE     0x128A8A12
68 #define SDP_SKIP_DCD_HEADER_COMPLETE    0x900DD009
69 #define SDP_ERROR_IMXHEADER             0x000a0533
70
71 #define SDP_COMMAND_LEN         16
72
73 struct sdp_command {
74         u16 cmd;
75         u32 addr;
76         u8 format;
77         u32 cnt;
78         u32 data;
79         u8 rsvd;
80 } __packed;
81
82 enum sdp_state {
83         SDP_STATE_IDLE,
84         SDP_STATE_RX_DCD_DATA,
85         SDP_STATE_RX_FILE_DATA,
86         SDP_STATE_TX_SEC_CONF,
87         SDP_STATE_TX_SEC_CONF_BUSY,
88         SDP_STATE_TX_REGISTER,
89         SDP_STATE_TX_REGISTER_BUSY,
90         SDP_STATE_TX_STATUS,
91         SDP_STATE_TX_STATUS_BUSY,
92         SDP_STATE_JUMP,
93 };
94
95 struct f_sdp {
96         struct usb_function             usb_function;
97
98         struct usb_descriptor_header    **function;
99
100         u8                              altsetting;
101         enum sdp_state                  state;
102         enum sdp_state                  next_state;
103         u32                             dnl_address;
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->next_state = SDP_STATE_IDLE;
281
282                 printf("Downloading file of size %d to 0x%08x... ",
283                        sdp->dnl_bytes_remaining, sdp->dnl_address);
284
285                 break;
286         case SDP_ERROR_STATUS:
287                 sdp->always_send_status = true;
288                 sdp->error_status = 0;
289
290                 sdp->state = SDP_STATE_TX_SEC_CONF;
291                 sdp->next_state = SDP_STATE_IDLE;
292                 break;
293         case SDP_DCD_WRITE:
294                 sdp->always_send_status = true;
295                 sdp->error_status = SDP_WRITE_REGISTER_COMPLETE;
296
297                 sdp->state = SDP_STATE_RX_DCD_DATA;
298                 sdp->dnl_bytes_remaining = be32_to_cpu(cmd->cnt);
299                 sdp->next_state = SDP_STATE_IDLE;
300                 break;
301         case SDP_JUMP_ADDRESS:
302                 sdp->always_send_status = false;
303                 sdp->error_status = 0;
304
305                 sdp->jmp_address = be32_to_cpu(cmd->addr);
306                 sdp->state = SDP_STATE_TX_SEC_CONF;
307                 sdp->next_state = SDP_STATE_JUMP;
308                 break;
309         case SDP_SKIP_DCD_HEADER:
310                 sdp->always_send_status = true;
311                 sdp->error_status = SDP_SKIP_DCD_HEADER_COMPLETE;
312
313                 /* Ignore command, DCD not supported anyway */
314                 sdp->state = SDP_STATE_TX_SEC_CONF;
315                 sdp->next_state = SDP_STATE_IDLE;
316                 break;
317         default:
318                 pr_err("Unknown command: %04x\n", be16_to_cpu(cmd->cmd));
319         }
320 }
321
322 static void sdp_rx_data_complete(struct usb_ep *ep, struct usb_request *req)
323 {
324         struct f_sdp *sdp = req->context;
325         int status = req->status;
326         u8 *data = req->buf;
327         u8 report = data[0];
328         int datalen = req->length - 1;
329
330         if (status != 0) {
331                 pr_err("Status: %d\n", status);
332                 return;
333         }
334
335         if (report != 2) {
336                 pr_err("Unexpected report %d\n", report);
337                 return;
338         }
339
340         if (sdp->dnl_bytes_remaining < datalen) {
341                 /*
342                  * Some USB stacks require to send a complete buffer as
343                  * specified in the HID descriptor. This leads to longer
344                  * transfers than the file length, no problem for us.
345                  */
346                 sdp->dnl_bytes_remaining = 0;
347         } else {
348                 sdp->dnl_bytes_remaining -= datalen;
349         }
350
351         if (sdp->state == SDP_STATE_RX_FILE_DATA) {
352                 memcpy(sdp_ptr(sdp->dnl_address), req->buf + 1, datalen);
353                 sdp->dnl_address += datalen;
354         }
355
356         if (sdp->dnl_bytes_remaining)
357                 return;
358
359         printf("done\n");
360
361         switch (sdp->state) {
362         case SDP_STATE_RX_FILE_DATA:
363                 sdp->state = SDP_STATE_TX_SEC_CONF;
364                 break;
365         case SDP_STATE_RX_DCD_DATA:
366                 sdp->state = SDP_STATE_TX_SEC_CONF;
367                 break;
368         default:
369                 pr_err("Invalid state: %d\n", sdp->state);
370         }
371 }
372
373 static void sdp_tx_complete(struct usb_ep *ep, struct usb_request *req)
374 {
375         struct f_sdp *sdp = req->context;
376         int status = req->status;
377
378         if (status != 0) {
379                 pr_err("Status: %d\n", status);
380                 return;
381         }
382
383         switch (sdp->state) {
384         case SDP_STATE_TX_SEC_CONF_BUSY:
385                 /* Not all commands require status report */
386                 if (sdp->always_send_status || sdp->error_status)
387                         sdp->state = SDP_STATE_TX_STATUS;
388                 else
389                         sdp->state = sdp->next_state;
390
391                 break;
392         case SDP_STATE_TX_STATUS_BUSY:
393                 sdp->state = sdp->next_state;
394                 break;
395         case SDP_STATE_TX_REGISTER_BUSY:
396                 if (sdp->dnl_bytes_remaining)
397                         sdp->state = SDP_STATE_TX_REGISTER;
398                 else
399                         sdp->state = SDP_STATE_IDLE;
400                 break;
401         default:
402                 pr_err("Wrong State: %d\n", sdp->state);
403                 sdp->state = SDP_STATE_IDLE;
404                 break;
405         }
406         debug("%s complete --> %d, %d/%d\n", ep->name,
407               status, req->actual, req->length);
408 }
409
410 static int sdp_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl)
411 {
412         struct usb_gadget *gadget = f->config->cdev->gadget;
413         struct usb_request *req = f->config->cdev->req;
414         struct f_sdp *sdp = f->config->cdev->req->context;
415         u16 len = le16_to_cpu(ctrl->wLength);
416         u16 w_value = le16_to_cpu(ctrl->wValue);
417         int value = 0;
418         u8 req_type = ctrl->bRequestType & USB_TYPE_MASK;
419
420         debug("w_value: 0x%04x len: 0x%04x\n", w_value, len);
421         debug("req_type: 0x%02x ctrl->bRequest: 0x%02x sdp->state: %d\n",
422               req_type, ctrl->bRequest, sdp->state);
423
424         if (req_type == USB_TYPE_STANDARD) {
425                 if (ctrl->bRequest == USB_REQ_GET_DESCRIPTOR) {
426                         /* Send HID report descriptor */
427                         value = min(len, (u16) sizeof(sdp_hid_report));
428                         memcpy(req->buf, &sdp_hid_report, value);
429                         sdp->configuration_done = true;
430                 }
431         }
432
433         if (req_type == USB_TYPE_CLASS) {
434                 int report = w_value & HID_REPORT_ID_MASK;
435
436                 /* HID (SDP) request */
437                 switch (ctrl->bRequest) {
438                 case HID_REQ_SET_REPORT:
439                         switch (report) {
440                         case 1:
441                                 value = SDP_COMMAND_LEN + 1;
442                                 req->complete = sdp_rx_command_complete;
443                                 break;
444                         case 2:
445                                 value = len;
446                                 req->complete = sdp_rx_data_complete;
447                                 break;
448                         }
449                 }
450         }
451
452         if (value >= 0) {
453                 req->length = value;
454                 req->zero = value < len;
455                 value = usb_ep_queue(gadget->ep0, req, 0);
456                 if (value < 0) {
457                         debug("ep_queue --> %d\n", value);
458                         req->status = 0;
459                 }
460         }
461
462         return value;
463 }
464
465 static int sdp_bind(struct usb_configuration *c, struct usb_function *f)
466 {
467         struct usb_gadget *gadget = c->cdev->gadget;
468         struct usb_composite_dev *cdev = c->cdev;
469         struct f_sdp *sdp = func_to_sdp(f);
470         int rv = 0, id;
471
472         id = usb_interface_id(c, f);
473         if (id < 0)
474                 return id;
475         sdp_intf_runtime.bInterfaceNumber = id;
476
477         struct usb_ep *ep;
478
479         /* allocate instance-specific endpoints */
480         ep = usb_ep_autoconfig(gadget, &in_desc);
481         if (!ep) {
482                 rv = -ENODEV;
483                 goto error;
484         }
485
486         sdp->in_ep = ep; /* Store IN EP for enabling @ setup */
487
488         cdev->req->context = sdp;
489
490 error:
491         return rv;
492 }
493
494 static void sdp_unbind(struct usb_configuration *c, struct usb_function *f)
495 {
496         free(sdp_func);
497         sdp_func = NULL;
498 }
499
500 static struct usb_request *alloc_ep_req(struct usb_ep *ep, unsigned length)
501 {
502         struct usb_request *req;
503
504         req = usb_ep_alloc_request(ep, 0);
505         if (!req)
506                 return req;
507
508         req->length = length;
509         req->buf = memalign(CONFIG_SYS_CACHELINE_SIZE, length);
510         if (!req->buf) {
511                 usb_ep_free_request(ep, req);
512                 req = NULL;
513         }
514
515         return req;
516 }
517
518
519 static struct usb_request *sdp_start_ep(struct usb_ep *ep)
520 {
521         struct usb_request *req;
522
523         req = alloc_ep_req(ep, 64);
524         debug("%s: ep:%p req:%p\n", __func__, ep, req);
525
526         if (!req)
527                 return NULL;
528
529         memset(req->buf, 0, req->length);
530         req->complete = sdp_tx_complete;
531
532         return req;
533 }
534 static int sdp_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
535 {
536         struct f_sdp *sdp = func_to_sdp(f);
537         struct usb_composite_dev *cdev = f->config->cdev;
538         int result;
539
540         debug("%s: intf: %d alt: %d\n", __func__, intf, alt);
541
542         result = usb_ep_enable(sdp->in_ep, &in_desc);
543         if (result)
544                 return result;
545         sdp->in_req = sdp_start_ep(sdp->in_ep);
546         sdp->in_req->context = sdp;
547
548         sdp->in_ep->driver_data = cdev; /* claim */
549
550         sdp->altsetting = alt;
551         sdp->state = SDP_STATE_IDLE;
552
553         return 0;
554 }
555
556 static int sdp_get_alt(struct usb_function *f, unsigned intf)
557 {
558         struct f_sdp *sdp = func_to_sdp(f);
559
560         return sdp->altsetting;
561 }
562
563 static void sdp_disable(struct usb_function *f)
564 {
565         struct f_sdp *sdp = func_to_sdp(f);
566
567         usb_ep_disable(sdp->in_ep);
568
569         if (sdp->in_req) {
570                 free(sdp->in_req);
571                 sdp->in_req = NULL;
572         }
573 }
574
575 static int sdp_bind_config(struct usb_configuration *c)
576 {
577         int status;
578
579         if (!sdp_func) {
580                 sdp_func = memalign(CONFIG_SYS_CACHELINE_SIZE, sizeof(*sdp_func));
581                 if (!sdp_func)
582                         return -ENOMEM;
583         }
584
585         memset(sdp_func, 0, sizeof(*sdp_func));
586
587         sdp_func->usb_function.name = "sdp";
588         sdp_func->usb_function.hs_descriptors = sdp_runtime_descs;
589         sdp_func->usb_function.descriptors = sdp_runtime_descs;
590         sdp_func->usb_function.bind = sdp_bind;
591         sdp_func->usb_function.unbind = sdp_unbind;
592         sdp_func->usb_function.set_alt = sdp_set_alt;
593         sdp_func->usb_function.get_alt = sdp_get_alt;
594         sdp_func->usb_function.disable = sdp_disable;
595         sdp_func->usb_function.strings = sdp_generic_strings;
596         sdp_func->usb_function.setup = sdp_setup;
597
598         status = usb_add_function(c, &sdp_func->usb_function);
599
600         return status;
601 }
602
603 int sdp_init(int controller_index)
604 {
605         printf("SDP: initialize...\n");
606         while (!sdp_func->configuration_done) {
607                 if (ctrlc()) {
608                         puts("\rCTRL+C - Operation aborted.\n");
609                         return 1;
610                 }
611
612                 WATCHDOG_RESET();
613                 usb_gadget_handle_interrupts(controller_index);
614         }
615
616         return 0;
617 }
618
619 static u32 sdp_jump_imxheader(void *address)
620 {
621         flash_header_v2_t *headerv2 = address;
622         ulong (*entry)(void);
623
624         if (headerv2->header.tag != IVT_HEADER_TAG) {
625                 printf("Header Tag is not an IMX image\n");
626                 return SDP_ERROR_IMXHEADER;
627         }
628
629         printf("Jumping to 0x%08x\n", headerv2->entry);
630         entry = sdp_ptr(headerv2->entry);
631         entry();
632
633         /* The image probably never returns hence we won't reach that point */
634         return 0;
635 }
636
637 static void sdp_handle_in_ep(void)
638 {
639         u8 *data = sdp_func->in_req->buf;
640         u32 status;
641         int datalen;
642
643         switch (sdp_func->state) {
644         case SDP_STATE_TX_SEC_CONF:
645                 debug("Report 3: HAB security\n");
646                 data[0] = 3;
647
648                 status = SDP_SECURITY_OPEN;
649                 memcpy(&data[1], &status, 4);
650                 sdp_func->in_req->length = 5;
651                 usb_ep_queue(sdp_func->in_ep, sdp_func->in_req, 0);
652                 sdp_func->state = SDP_STATE_TX_SEC_CONF_BUSY;
653                 break;
654
655         case SDP_STATE_TX_STATUS:
656                 debug("Report 4: Status\n");
657                 data[0] = 4;
658
659                 memcpy(&data[1], &sdp_func->error_status, 4);
660                 sdp_func->in_req->length = 65;
661                 usb_ep_queue(sdp_func->in_ep, sdp_func->in_req, 0);
662                 sdp_func->state = SDP_STATE_TX_STATUS_BUSY;
663                 break;
664         case SDP_STATE_TX_REGISTER:
665                 debug("Report 4: Register Values\n");
666                 data[0] = 4;
667
668                 datalen = sdp_func->dnl_bytes_remaining;
669
670                 if (datalen > 64)
671                         datalen = 64;
672
673                 memcpy(&data[1], sdp_ptr(sdp_func->dnl_address), datalen);
674                 sdp_func->in_req->length = 65;
675
676                 sdp_func->dnl_bytes_remaining -= datalen;
677                 sdp_func->dnl_address += datalen;
678
679                 usb_ep_queue(sdp_func->in_ep, sdp_func->in_req, 0);
680                 sdp_func->state = SDP_STATE_TX_REGISTER_BUSY;
681                 break;
682         case SDP_STATE_JUMP:
683                 printf("Jumping to header at 0x%08x\n", sdp_func->jmp_address);
684                 status = sdp_jump_imxheader(sdp_ptr(sdp_func->jmp_address));
685
686                 /* If imx header fails, try some U-Boot specific headers */
687                 if (status) {
688 #ifdef CONFIG_SPL_BUILD
689                         /* In SPL, allow jumps to U-Boot images */
690                         struct spl_image_info spl_image = {};
691                         spl_parse_image_header(&spl_image,
692                                 (struct image_header *)sdp_func->jmp_address);
693                         jump_to_image_no_args(&spl_image);
694 #else
695                         /* In U-Boot, allow jumps to scripts */
696                         source(sdp_func->jmp_address, "script@1");
697 #endif
698                 }
699
700                 sdp_func->next_state = SDP_STATE_IDLE;
701                 sdp_func->error_status = status;
702
703                 /* Only send Report 4 if there was an error */
704                 if (status)
705                         sdp_func->state = SDP_STATE_TX_STATUS;
706                 else
707                         sdp_func->state = SDP_STATE_IDLE;
708                 break;
709         default:
710                 break;
711         };
712 }
713
714 void sdp_handle(int controller_index)
715 {
716         printf("SDP: handle requests...\n");
717         while (1) {
718                 if (ctrlc()) {
719                         puts("\rCTRL+C - Operation aborted.\n");
720                         return;
721                 }
722
723                 WATCHDOG_RESET();
724                 usb_gadget_handle_interrupts(controller_index);
725
726                 sdp_handle_in_ep();
727         }
728 }
729
730 int sdp_add(struct usb_configuration *c)
731 {
732         int id;
733
734         id = usb_string_id(c->cdev);
735         if (id < 0)
736                 return id;
737         strings_sdp_generic[0].id = id;
738         sdp_intf_runtime.iInterface = id;
739
740         debug("%s: cdev: %p gadget: %p gadget->ep0: %p\n", __func__,
741               c->cdev, c->cdev->gadget, c->cdev->gadget->ep0);
742
743         return sdp_bind_config(c);
744 }
745
746 DECLARE_GADGET_BIND_CALLBACK(usb_dnl_sdp, sdp_add);