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arm: vf610: fix double iomux configuration for vf610twr board
[u-boot/qq2440-u-boot.git] / drivers / usb / gadget / storage_common.c
blob02803df23c52faf2f6a84c7fa69f95f5cc0c2ca1
1 /*
2 * storage_common.c -- Common definitions for mass storage functionality
3 *
4 * Copyright (C) 2003-2008 Alan Stern
5 * Copyeight (C) 2009 Samsung Electronics
6 * Author: Michal Nazarewicz (m.nazarewicz@samsung.com)
7 *
8 * Ported to u-boot:
9 * Andrzej Pietrasiewicz <andrzej.p@samsung.com>
10 *
11 * Code refactoring & cleanup:
12 * Łukasz Majewski <l.majewski@samsung.com>
13 *
14 * SPDX-License-Identifier: GPL-2.0+
15 */
16
17
18 /*
19 * This file requires the following identifiers used in USB strings to
20 * be defined (each of type pointer to char):
21 * - fsg_string_manufacturer -- name of the manufacturer
22 * - fsg_string_product -- name of the product
23 * - fsg_string_serial -- product's serial
24 * - fsg_string_config -- name of the configuration
25 * - fsg_string_interface -- name of the interface
26 * The first four are only needed when FSG_DESCRIPTORS_DEVICE_STRINGS
27 * macro is defined prior to including this file.
28 */
29
30 /*
31 * When FSG_NO_INTR_EP is defined fsg_fs_intr_in_desc and
32 * fsg_hs_intr_in_desc objects as well as
33 * FSG_FS_FUNCTION_PRE_EP_ENTRIES and FSG_HS_FUNCTION_PRE_EP_ENTRIES
34 * macros are not defined.
35 *
36 * When FSG_NO_DEVICE_STRINGS is defined FSG_STRING_MANUFACTURER,
37 * FSG_STRING_PRODUCT, FSG_STRING_SERIAL and FSG_STRING_CONFIG are not
38 * defined (as well as corresponding entries in string tables are
39 * missing) and FSG_STRING_INTERFACE has value of zero.
40 *
41 * When FSG_NO_OTG is defined fsg_otg_desc won't be defined.
42 */
43
44 /*
45 * When FSG_BUFFHD_STATIC_BUFFER is defined when this file is included
46 * the fsg_buffhd structure's buf field will be an array of FSG_BUFLEN
47 * characters rather then a pointer to void.
48 */
49
50
51 /* #include <asm/unaligned.h> */
52
53
54 /*
55 * Thanks to NetChip Technologies for donating this product ID.
56 *
57 * DO NOT REUSE THESE IDs with any other driver!! Ever!!
58 * Instead: allocate your own, using normal USB-IF procedures.
59 */
60 #define FSG_VENDOR_ID 0x0525 /* NetChip */
61 #define FSG_PRODUCT_ID 0xa4a5 /* Linux-USB File-backed Storage Gadget */
62
63 /*-------------------------------------------------------------------------*/
64
65 #ifndef DEBUG
66 #undef VERBOSE_DEBUG
67 #undef DUMP_MSGS
68 #endif /* !DEBUG */
69
70 #ifdef VERBOSE_DEBUG
71 #define VLDBG LDBG
72 #else
73 #define VLDBG(lun, fmt, args...) do { } while (0)
74 #endif /* VERBOSE_DEBUG */
75
76 /*
77 #define LDBG(lun, fmt, args...) dev_dbg (&(lun)->dev, fmt, ## args)
78 #define LERROR(lun, fmt, args...) dev_err (&(lun)->dev, fmt, ## args)
79 #define LWARN(lun, fmt, args...) dev_warn(&(lun)->dev, fmt, ## args)
80 #define LINFO(lun, fmt, args...) dev_info(&(lun)->dev, fmt, ## args)
81 */
82
83 #define LDBG(lun, fmt, args...) do { } while (0)
84 #define LERROR(lun, fmt, args...) do { } while (0)
85 #define LWARN(lun, fmt, args...) do { } while (0)
86 #define LINFO(lun, fmt, args...) do { } while (0)
87
88 /*
89 * Keep those macros in sync with those in
90 * include/linux/usb/composite.h or else GCC will complain. If they
91 * are identical (the same names of arguments, white spaces in the
92 * same places) GCC will allow redefinition otherwise (even if some
93 * white space is removed or added) warning will be issued.
94 *
95 * Those macros are needed here because File Storage Gadget does not
96 * include the composite.h header. For composite gadgets those macros
97 * are redundant since composite.h is included any way.
98 *
99 * One could check whether those macros are already defined (which
100 * would indicate composite.h had been included) or not (which would
101 * indicate we were in FSG) but this is not done because a warning is
102 * desired if definitions here differ from the ones in composite.h.
103 *
104 * We want the definitions to match and be the same in File Storage
105 * Gadget as well as Mass Storage Function (and so composite gadgets
106 * using MSF). If someone changes them in composite.h it will produce
107 * a warning in this file when building MSF.
108 */
109
110 #define DBG(d, fmt, args...) debug(fmt , ## args)
111 #define VDBG(d, fmt, args...) debug(fmt , ## args)
112 /* #define ERROR(d, fmt, args...) printf(fmt , ## args) */
113 /* #define WARNING(d, fmt, args...) printf(fmt , ## args) */
114 /* #define INFO(d, fmt, args...) printf(fmt , ## args) */
115
116 /* #define DBG(d, fmt, args...) do { } while (0) */
117 /* #define VDBG(d, fmt, args...) do { } while (0) */
118 #define ERROR(d, fmt, args...) do { } while (0)
119 #define WARNING(d, fmt, args...) do { } while (0)
120 #define INFO(d, fmt, args...) do { } while (0)
121
122 #ifdef DUMP_MSGS
123
124 /* dump_msg(fsg, const char * label, const u8 * buf, unsigned length); */
125 # define dump_msg(fsg, label, buf, length) do { \
126 if (length < 512) { \
127 DBG(fsg, "%s, length %u:\n", label, length); \
128 print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, \
129 16, 1, buf, length, 0); \
130 } \
131 } while (0)
132
133 # define dump_cdb(fsg) do { } while (0)
134
135 #else
136
137 # define dump_msg(fsg, /* const char * */ label, \
138 /* const u8 * */ buf, /* unsigned */ length) do { } while (0)
139
140 # ifdef VERBOSE_DEBUG
141
142 # define dump_cdb(fsg) \
143 print_hex_dump(KERN_DEBUG, "SCSI CDB: ", DUMP_PREFIX_NONE, \
144 16, 1, (fsg)->cmnd, (fsg)->cmnd_size, 0) \
145
146 # else
147
148 # define dump_cdb(fsg) do { } while (0)
149
150 # endif /* VERBOSE_DEBUG */
151
152 #endif /* DUMP_MSGS */
153
154 /*-------------------------------------------------------------------------*/
155
156 /* SCSI device types */
157 #define TYPE_DISK 0x00
158 #define TYPE_CDROM 0x05
159
160 /* USB protocol value = the transport method */
161 #define USB_PR_CBI 0x00 /* Control/Bulk/Interrupt */
162 #define USB_PR_CB 0x01 /* Control/Bulk w/o interrupt */
163 #define USB_PR_BULK 0x50 /* Bulk-only */
164
165 /* USB subclass value = the protocol encapsulation */
166 #define USB_SC_RBC 0x01 /* Reduced Block Commands (flash) */
167 #define USB_SC_8020 0x02 /* SFF-8020i, MMC-2, ATAPI (CD-ROM) */
168 #define USB_SC_QIC 0x03 /* QIC-157 (tape) */
169 #define USB_SC_UFI 0x04 /* UFI (floppy) */
170 #define USB_SC_8070 0x05 /* SFF-8070i (removable) */
171 #define USB_SC_SCSI 0x06 /* Transparent SCSI */
172
173 /* Bulk-only data structures */
174
175 /* Command Block Wrapper */
176 struct fsg_bulk_cb_wrap {
177 __le32 Signature; /* Contains 'USBC' */
178 u32 Tag; /* Unique per command id */
179 __le32 DataTransferLength; /* Size of the data */
180 u8 Flags; /* Direction in bit 7 */
181 u8 Lun; /* LUN (normally 0) */
182 u8 Length; /* Of the CDB, <= MAX_COMMAND_SIZE */
183 u8 CDB[16]; /* Command Data Block */
184 };
185
186 #define USB_BULK_CB_WRAP_LEN 31
187 #define USB_BULK_CB_SIG 0x43425355 /* Spells out USBC */
188 #define USB_BULK_IN_FLAG 0x80
189
190 /* Command Status Wrapper */
191 struct bulk_cs_wrap {
192 __le32 Signature; /* Should = 'USBS' */
193 u32 Tag; /* Same as original command */
194 __le32 Residue; /* Amount not transferred */
195 u8 Status; /* See below */
196 };
197
198 #define USB_BULK_CS_WRAP_LEN 13
199 #define USB_BULK_CS_SIG 0x53425355 /* Spells out 'USBS' */
200 #define USB_STATUS_PASS 0
201 #define USB_STATUS_FAIL 1
202 #define USB_STATUS_PHASE_ERROR 2
203
204 /* Bulk-only class specific requests */
205 #define USB_BULK_RESET_REQUEST 0xff
206 #define USB_BULK_GET_MAX_LUN_REQUEST 0xfe
207
208 /* CBI Interrupt data structure */
209 struct interrupt_data {
210 u8 bType;
211 u8 bValue;
212 };
213
214 #define CBI_INTERRUPT_DATA_LEN 2
215
216 /* CBI Accept Device-Specific Command request */
217 #define USB_CBI_ADSC_REQUEST 0x00
218
219 /* Length of a SCSI Command Data Block */
220 #define MAX_COMMAND_SIZE 16
221
222 /* SCSI commands that we recognize */
223 #define SC_FORMAT_UNIT 0x04
224 #define SC_INQUIRY 0x12
225 #define SC_MODE_SELECT_6 0x15
226 #define SC_MODE_SELECT_10 0x55
227 #define SC_MODE_SENSE_6 0x1a
228 #define SC_MODE_SENSE_10 0x5a
229 #define SC_PREVENT_ALLOW_MEDIUM_REMOVAL 0x1e
230 #define SC_READ_6 0x08
231 #define SC_READ_10 0x28
232 #define SC_READ_12 0xa8
233 #define SC_READ_CAPACITY 0x25
234 #define SC_READ_FORMAT_CAPACITIES 0x23
235 #define SC_READ_HEADER 0x44
236 #define SC_READ_TOC 0x43
237 #define SC_RELEASE 0x17
238 #define SC_REQUEST_SENSE 0x03
239 #define SC_RESERVE 0x16
240 #define SC_SEND_DIAGNOSTIC 0x1d
241 #define SC_START_STOP_UNIT 0x1b
242 #define SC_SYNCHRONIZE_CACHE 0x35
243 #define SC_TEST_UNIT_READY 0x00
244 #define SC_VERIFY 0x2f
245 #define SC_WRITE_6 0x0a
246 #define SC_WRITE_10 0x2a
247 #define SC_WRITE_12 0xaa
248
249 /* SCSI Sense Key/Additional Sense Code/ASC Qualifier values */
250 #define SS_NO_SENSE 0
251 #define SS_COMMUNICATION_FAILURE 0x040800
252 #define SS_INVALID_COMMAND 0x052000
253 #define SS_INVALID_FIELD_IN_CDB 0x052400
254 #define SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE 0x052100
255 #define SS_LOGICAL_UNIT_NOT_SUPPORTED 0x052500
256 #define SS_MEDIUM_NOT_PRESENT 0x023a00
257 #define SS_MEDIUM_REMOVAL_PREVENTED 0x055302
258 #define SS_NOT_READY_TO_READY_TRANSITION 0x062800
259 #define SS_RESET_OCCURRED 0x062900
260 #define SS_SAVING_PARAMETERS_NOT_SUPPORTED 0x053900
261 #define SS_UNRECOVERED_READ_ERROR 0x031100
262 #define SS_WRITE_ERROR 0x030c02
263 #define SS_WRITE_PROTECTED 0x072700
264
265 #define SK(x) ((u8) ((x) >> 16)) /* Sense Key byte, etc. */
266 #define ASC(x) ((u8) ((x) >> 8))
267 #define ASCQ(x) ((u8) (x))
268
269 struct device_attribute { int i; };
270 struct rw_semaphore { int i; };
271 #define down_write(...) do { } while (0)
272 #define up_write(...) do { } while (0)
273 #define down_read(...) do { } while (0)
274 #define up_read(...) do { } while (0)
275 #define ETOOSMALL 525
276
277 #include <usb_mass_storage.h>
278
279 /*-------------------------------------------------------------------------*/
280
281 struct fsg_lun {
282 loff_t file_length;
283 loff_t num_sectors;
284
285 unsigned int initially_ro:1;
286 unsigned int ro:1;
287 unsigned int removable:1;
288 unsigned int cdrom:1;
289 unsigned int prevent_medium_removal:1;
290 unsigned int registered:1;
291 unsigned int info_valid:1;
292 unsigned int nofua:1;
293
294 u32 sense_data;
295 u32 sense_data_info;
296 u32 unit_attention_data;
297
298 struct device dev;
299 };
300
301 #define fsg_lun_is_open(curlun) ((curlun)->filp != NULL)
302 #if 0
303 static struct fsg_lun *fsg_lun_from_dev(struct device *dev)
304 {
305 return container_of(dev, struct fsg_lun, dev);
306 }
307 #endif
308
309 /* Big enough to hold our biggest descriptor */
310 #define EP0_BUFSIZE 256
311 #define DELAYED_STATUS (EP0_BUFSIZE + 999) /* An impossibly large value */
312
313 /* Number of buffers we will use. 2 is enough for double-buffering */
314 #define FSG_NUM_BUFFERS 2
315
316 /* Default size of buffer length. */
317 #define FSG_BUFLEN ((u32)16384)
318
319 /* Maximal number of LUNs supported in mass storage function */
320 #define FSG_MAX_LUNS 8
321
322 enum fsg_buffer_state {
323 BUF_STATE_EMPTY = 0,
324 BUF_STATE_FULL,
325 BUF_STATE_BUSY
326 };
327
328 struct fsg_buffhd {
329 #ifdef FSG_BUFFHD_STATIC_BUFFER
330 char buf[FSG_BUFLEN];
331 #else
332 void *buf;
333 #endif
334 enum fsg_buffer_state state;
335 struct fsg_buffhd *next;
336
337 /*
338 * The NetChip 2280 is faster, and handles some protocol faults
339 * better, if we don't submit any short bulk-out read requests.
340 * So we will record the intended request length here.
341 */
342 unsigned int bulk_out_intended_length;
343
344 struct usb_request *inreq;
345 int inreq_busy;
346 struct usb_request *outreq;
347 int outreq_busy;
348 };
349
350 enum fsg_state {
351 /* This one isn't used anywhere */
352 FSG_STATE_COMMAND_PHASE = -10,
353 FSG_STATE_DATA_PHASE,
354 FSG_STATE_STATUS_PHASE,
355
356 FSG_STATE_IDLE = 0,
357 FSG_STATE_ABORT_BULK_OUT,
358 FSG_STATE_RESET,
359 FSG_STATE_INTERFACE_CHANGE,
360 FSG_STATE_CONFIG_CHANGE,
361 FSG_STATE_DISCONNECT,
362 FSG_STATE_EXIT,
363 FSG_STATE_TERMINATED
364 };
365
366 enum data_direction {
367 DATA_DIR_UNKNOWN = 0,
368 DATA_DIR_FROM_HOST,
369 DATA_DIR_TO_HOST,
370 DATA_DIR_NONE
371 };
372
373 /*-------------------------------------------------------------------------*/
374
375 static inline u32 get_unaligned_be24(u8 *buf)
376 {
377 return 0xffffff & (u32) get_unaligned_be32(buf - 1);
378 }
379
380 /*-------------------------------------------------------------------------*/
381
382 enum {
383 #ifndef FSG_NO_DEVICE_STRINGS
384 FSG_STRING_MANUFACTURER = 1,
385 FSG_STRING_PRODUCT,
386 FSG_STRING_SERIAL,
387 FSG_STRING_CONFIG,
388 #endif
389 FSG_STRING_INTERFACE
390 };
391
392 #ifndef FSG_NO_OTG
393 static struct usb_otg_descriptor
394 fsg_otg_desc = {
395 .bLength = sizeof fsg_otg_desc,
396 .bDescriptorType = USB_DT_OTG,
397
398 .bmAttributes = USB_OTG_SRP,
399 };
400 #endif
401
402 /* There is only one interface. */
403
404 static struct usb_interface_descriptor
405 fsg_intf_desc = {
406 .bLength = sizeof fsg_intf_desc,
407 .bDescriptorType = USB_DT_INTERFACE,
408
409 .bNumEndpoints = 2, /* Adjusted during fsg_bind() */
410 .bInterfaceClass = USB_CLASS_MASS_STORAGE,
411 .bInterfaceSubClass = USB_SC_SCSI, /* Adjusted during fsg_bind() */
412 .bInterfaceProtocol = USB_PR_BULK, /* Adjusted during fsg_bind() */
413 .iInterface = FSG_STRING_INTERFACE,
414 };
415
416 /*
417 * Three full-speed endpoint descriptors: bulk-in, bulk-out, and
418 * interrupt-in.
419 */
420
421 static struct usb_endpoint_descriptor
422 fsg_fs_bulk_in_desc = {
423 .bLength = USB_DT_ENDPOINT_SIZE,
424 .bDescriptorType = USB_DT_ENDPOINT,
425
426 .bEndpointAddress = USB_DIR_IN,
427 .bmAttributes = USB_ENDPOINT_XFER_BULK,
428 /* wMaxPacketSize set by autoconfiguration */
429 };
430
431 static struct usb_endpoint_descriptor
432 fsg_fs_bulk_out_desc = {
433 .bLength = USB_DT_ENDPOINT_SIZE,
434 .bDescriptorType = USB_DT_ENDPOINT,
435
436 .bEndpointAddress = USB_DIR_OUT,
437 .bmAttributes = USB_ENDPOINT_XFER_BULK,
438 /* wMaxPacketSize set by autoconfiguration */
439 };
440
441 #ifndef FSG_NO_INTR_EP
442
443 static struct usb_endpoint_descriptor
444 fsg_fs_intr_in_desc = {
445 .bLength = USB_DT_ENDPOINT_SIZE,
446 .bDescriptorType = USB_DT_ENDPOINT,
447
448 .bEndpointAddress = USB_DIR_IN,
449 .bmAttributes = USB_ENDPOINT_XFER_INT,
450 .wMaxPacketSize = cpu_to_le16(2),
451 .bInterval = 32, /* frames -> 32 ms */
452 };
453
454 #ifndef FSG_NO_OTG
455 # define FSG_FS_FUNCTION_PRE_EP_ENTRIES 2
456 #else
457 # define FSG_FS_FUNCTION_PRE_EP_ENTRIES 1
458 #endif
459
460 #endif
461
462 static struct usb_descriptor_header *fsg_fs_function[] = {
463 #ifndef FSG_NO_OTG
464 (struct usb_descriptor_header *) &fsg_otg_desc,
465 #endif
466 (struct usb_descriptor_header *) &fsg_intf_desc,
467 (struct usb_descriptor_header *) &fsg_fs_bulk_in_desc,
468 (struct usb_descriptor_header *) &fsg_fs_bulk_out_desc,
469 #ifndef FSG_NO_INTR_EP
470 (struct usb_descriptor_header *) &fsg_fs_intr_in_desc,
471 #endif
472 NULL,
473 };
474
475 /*
476 * USB 2.0 devices need to expose both high speed and full speed
477 * descriptors, unless they only run at full speed.
478 *
479 * That means alternate endpoint descriptors (bigger packets)
480 * and a "device qualifier" ... plus more construction options
481 * for the configuration descriptor.
482 */
483 static struct usb_endpoint_descriptor
484 fsg_hs_bulk_in_desc = {
485 .bLength = USB_DT_ENDPOINT_SIZE,
486 .bDescriptorType = USB_DT_ENDPOINT,
487
488 /* bEndpointAddress copied from fs_bulk_in_desc during fsg_bind() */
489 .bmAttributes = USB_ENDPOINT_XFER_BULK,
490 .wMaxPacketSize = cpu_to_le16(512),
491 };
492
493 static struct usb_endpoint_descriptor
494 fsg_hs_bulk_out_desc = {
495 .bLength = USB_DT_ENDPOINT_SIZE,
496 .bDescriptorType = USB_DT_ENDPOINT,
497
498 /* bEndpointAddress copied from fs_bulk_out_desc during fsg_bind() */
499 .bmAttributes = USB_ENDPOINT_XFER_BULK,
500 .wMaxPacketSize = cpu_to_le16(512),
501 .bInterval = 1, /* NAK every 1 uframe */
502 };
503
504 #ifndef FSG_NO_INTR_EP
505
506 static struct usb_endpoint_descriptor
507 fsg_hs_intr_in_desc = {
508 .bLength = USB_DT_ENDPOINT_SIZE,
509 .bDescriptorType = USB_DT_ENDPOINT,
510
511 /* bEndpointAddress copied from fs_intr_in_desc during fsg_bind() */
512 .bmAttributes = USB_ENDPOINT_XFER_INT,
513 .wMaxPacketSize = cpu_to_le16(2),
514 .bInterval = 9, /* 2**(9-1) = 256 uframes -> 32 ms */
515 };
516
517 #ifndef FSG_NO_OTG
518 # define FSG_HS_FUNCTION_PRE_EP_ENTRIES 2
519 #else
520 # define FSG_HS_FUNCTION_PRE_EP_ENTRIES 1
521 #endif
522
523 #endif
524
525 static struct usb_descriptor_header *fsg_hs_function[] = {
526 #ifndef FSG_NO_OTG
527 (struct usb_descriptor_header *) &fsg_otg_desc,
528 #endif
529 (struct usb_descriptor_header *) &fsg_intf_desc,
530 (struct usb_descriptor_header *) &fsg_hs_bulk_in_desc,
531 (struct usb_descriptor_header *) &fsg_hs_bulk_out_desc,
532 #ifndef FSG_NO_INTR_EP
533 (struct usb_descriptor_header *) &fsg_hs_intr_in_desc,
534 #endif
535 NULL,
536 };
537
538 /* Maxpacket and other transfer characteristics vary by speed. */
539 static struct usb_endpoint_descriptor *
540 fsg_ep_desc(struct usb_gadget *g, struct usb_endpoint_descriptor *fs,
541 struct usb_endpoint_descriptor *hs)
542 {
543 if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH)
544 return hs;
545 return fs;
546 }
547
548 /* Static strings, in UTF-8 (for simplicity we use only ASCII characters) */
549 static struct usb_string fsg_strings[] = {
550 #ifndef FSG_NO_DEVICE_STRINGS
551 {FSG_STRING_MANUFACTURER, fsg_string_manufacturer},
552 {FSG_STRING_PRODUCT, fsg_string_product},
553 {FSG_STRING_SERIAL, fsg_string_serial},
554 {FSG_STRING_CONFIG, fsg_string_config},
555 #endif
556 {FSG_STRING_INTERFACE, fsg_string_interface},
557 {}
558 };
559
560 static struct usb_gadget_strings fsg_stringtab = {
561 .language = 0x0409, /* en-us */
562 .strings = fsg_strings,
563 };
564
565 /*-------------------------------------------------------------------------*/
566
567 /*
568 * If the next two routines are called while the gadget is registered,
569 * the caller must own fsg->filesem for writing.
570 */
571
572 static int fsg_lun_open(struct fsg_lun *curlun, const char *filename)
573 {
574 int ro;
575
576 /* R/W if we can, R/O if we must */
577 ro = curlun->initially_ro;
578
579 curlun->ro = ro;
580 curlun->file_length = ums->num_sectors << 9;
581 curlun->num_sectors = ums->num_sectors;
582 debug("open backing file: %s\n", filename);
583
584 return 0;
585 }
586
587 static void fsg_lun_close(struct fsg_lun *curlun)
588 {
589 }
590
591 /*-------------------------------------------------------------------------*/
592
593 /*
594 * Sync the file data, don't bother with the metadata.
595 * This code was copied from fs/buffer.c:sys_fdatasync().
596 */
597 static int fsg_lun_fsync_sub(struct fsg_lun *curlun)
598 {
599 return 0;
600 }
601
602 static void store_cdrom_address(u8 *dest, int msf, u32 addr)
603 {
604 if (msf) {
605 /* Convert to Minutes-Seconds-Frames */
606 addr >>= 2; /* Convert to 2048-byte frames */
607 addr += 2*75; /* Lead-in occupies 2 seconds */
608 dest[3] = addr % 75; /* Frames */
609 addr /= 75;
610 dest[2] = addr % 60; /* Seconds */
611 addr /= 60;
612 dest[1] = addr; /* Minutes */
613 dest[0] = 0; /* Reserved */
614 } else {
615 /* Absolute sector */
616 put_unaligned_be32(addr, dest);
617 }
618 }
619
620 /*-------------------------------------------------------------------------*/
u-boot for qq2440