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1 /*
2 * (C) Copyright 2000-2011
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4 *
5 * SPDX-License-Identifier: GPL-2.0+
6 */
7
8 /*
9 * IDE support
10 */
11
12 #include <common.h>
13 #include <config.h>
14 #include <watchdog.h>
15 #include <command.h>
16 #include <image.h>
17 #include <asm/byteorder.h>
18 #include <asm/io.h>
19
20 #if defined(CONFIG_IDE_8xx_DIRECT) || defined(CONFIG_IDE_PCMCIA)
21 # include <pcmcia.h>
22 #endif
23
24 #include <ide.h>
25 #include <ata.h>
26
27 #ifdef CONFIG_STATUS_LED
28 # include <status_led.h>
29 #endif
30
31 #ifdef __PPC__
32 # define EIEIO __asm__ volatile ("eieio")
33 # define SYNC __asm__ volatile ("sync")
34 #else
35 # define EIEIO /* nothing */
36 # define SYNC /* nothing */
37 #endif
38
39 /* ------------------------------------------------------------------------- */
40
41 /* Current I/O Device */
42 static int curr_device = -1;
43
44 /* Current offset for IDE0 / IDE1 bus access */
45 ulong ide_bus_offset[CONFIG_SYS_IDE_MAXBUS] = {
46 #if defined(CONFIG_SYS_ATA_IDE0_OFFSET)
47 CONFIG_SYS_ATA_IDE0_OFFSET,
48 #endif
49 #if defined(CONFIG_SYS_ATA_IDE1_OFFSET) && (CONFIG_SYS_IDE_MAXBUS > 1)
50 CONFIG_SYS_ATA_IDE1_OFFSET,
51 #endif
52 };
53
54 static int ide_bus_ok[CONFIG_SYS_IDE_MAXBUS];
55
56 block_dev_desc_t ide_dev_desc[CONFIG_SYS_IDE_MAXDEVICE];
57 /* ------------------------------------------------------------------------- */
58
59 #ifdef CONFIG_IDE_RESET
60 static void ide_reset (void);
61 #else
62 #define ide_reset() /* dummy */
63 #endif
64
65 static void ide_ident (block_dev_desc_t *dev_desc);
66 static uchar ide_wait (int dev, ulong t);
67
68 #define IDE_TIME_OUT 2000 /* 2 sec timeout */
69
70 #define ATAPI_TIME_OUT 7000 /* 7 sec timeout (5 sec seems to work...) */
71
72 #define IDE_SPIN_UP_TIME_OUT 5000 /* 5 sec spin-up timeout */
73
74 static void ident_cpy (unsigned char *dest, unsigned char *src, unsigned int len);
75
76 #ifndef CONFIG_SYS_ATA_PORT_ADDR
77 #define CONFIG_SYS_ATA_PORT_ADDR(port) (port)
78 #endif
79
80 #ifdef CONFIG_ATAPI
81 static void atapi_inquiry(block_dev_desc_t *dev_desc);
82 static ulong atapi_read(int device, ulong blknr, lbaint_t blkcnt,
83 void *buffer);
84 #endif
85
86
87 /* ------------------------------------------------------------------------- */
88
89 int do_ide(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
90 {
91 int rcode = 0;
92
93 switch (argc) {
94 case 0:
95 case 1:
96 return CMD_RET_USAGE;
97 case 2:
98 if (strncmp(argv[1], "res", 3) == 0) {
99 puts("\nReset IDE"
100 #ifdef CONFIG_IDE_8xx_DIRECT
101 " on PCMCIA " PCMCIA_SLOT_MSG
102 #endif
103 ": ");
104
105 ide_init();
106 return 0;
107 } else if (strncmp(argv[1], "inf", 3) == 0) {
108 int i;
109
110 putc('\n');
111
112 for (i = 0; i < CONFIG_SYS_IDE_MAXDEVICE; ++i) {
113 if (ide_dev_desc[i].type == DEV_TYPE_UNKNOWN)
114 continue; /* list only known devices */
115 printf("IDE device %d: ", i);
116 dev_print(&ide_dev_desc[i]);
117 }
118 return 0;
119
120 } else if (strncmp(argv[1], "dev", 3) == 0) {
121 if ((curr_device < 0)
122 || (curr_device >= CONFIG_SYS_IDE_MAXDEVICE)) {
123 puts("\nno IDE devices available\n");
124 return 1;
125 }
126 printf("\nIDE device %d: ", curr_device);
127 dev_print(&ide_dev_desc[curr_device]);
128 return 0;
129 } else if (strncmp(argv[1], "part", 4) == 0) {
130 int dev, ok;
131
132 for (ok = 0, dev = 0;
133 dev < CONFIG_SYS_IDE_MAXDEVICE;
134 ++dev) {
135 if (ide_dev_desc[dev].part_type !=
136 PART_TYPE_UNKNOWN) {
137 ++ok;
138 if (dev)
139 putc('\n');
140 print_part(&ide_dev_desc[dev]);
141 }
142 }
143 if (!ok) {
144 puts("\nno IDE devices available\n");
145 rcode++;
146 }
147 return rcode;
148 }
149 return CMD_RET_USAGE;
150 case 3:
151 if (strncmp(argv[1], "dev", 3) == 0) {
152 int dev = (int) simple_strtoul(argv[2], NULL, 10);
153
154 printf("\nIDE device %d: ", dev);
155 if (dev >= CONFIG_SYS_IDE_MAXDEVICE) {
156 puts("unknown device\n");
157 return 1;
158 }
159 dev_print(&ide_dev_desc[dev]);
160 /*ide_print (dev); */
161
162 if (ide_dev_desc[dev].type == DEV_TYPE_UNKNOWN)
163 return 1;
164
165 curr_device = dev;
166
167 puts("... is now current device\n");
168
169 return 0;
170 } else if (strncmp(argv[1], "part", 4) == 0) {
171 int dev = (int) simple_strtoul(argv[2], NULL, 10);
172
173 if (ide_dev_desc[dev].part_type != PART_TYPE_UNKNOWN) {
174 print_part(&ide_dev_desc[dev]);
175 } else {
176 printf("\nIDE device %d not available\n",
177 dev);
178 rcode = 1;
179 }
180 return rcode;
181 }
182
183 return CMD_RET_USAGE;
184 default:
185 /* at least 4 args */
186
187 if (strcmp(argv[1], "read") == 0) {
188 ulong addr = simple_strtoul(argv[2], NULL, 16);
189 ulong cnt = simple_strtoul(argv[4], NULL, 16);
190 ulong n;
191
192 #ifdef CONFIG_SYS_64BIT_LBA
193 lbaint_t blk = simple_strtoull(argv[3], NULL, 16);
194
195 printf("\nIDE read: device %d block # %lld, count %ld ... ",
196 curr_device, blk, cnt);
197 #else
198 lbaint_t blk = simple_strtoul(argv[3], NULL, 16);
199
200 printf("\nIDE read: device %d block # %ld, count %ld ... ",
201 curr_device, blk, cnt);
202 #endif
203
204 n = ide_dev_desc[curr_device].block_read(curr_device,
205 blk, cnt,
206 (ulong *)addr);
207 /* flush cache after read */
208 flush_cache(addr,
209 cnt * ide_dev_desc[curr_device].blksz);
210
211 printf("%ld blocks read: %s\n",
212 n, (n == cnt) ? "OK" : "ERROR");
213 if (n == cnt)
214 return 0;
215 else
216 return 1;
217 } else if (strcmp(argv[1], "write") == 0) {
218 ulong addr = simple_strtoul(argv[2], NULL, 16);
219 ulong cnt = simple_strtoul(argv[4], NULL, 16);
220 ulong n;
221
222 #ifdef CONFIG_SYS_64BIT_LBA
223 lbaint_t blk = simple_strtoull(argv[3], NULL, 16);
224
225 printf("\nIDE write: device %d block # %lld, count %ld ... ",
226 curr_device, blk, cnt);
227 #else
228 lbaint_t blk = simple_strtoul(argv[3], NULL, 16);
229
230 printf("\nIDE write: device %d block # %ld, count %ld ... ",
231 curr_device, blk, cnt);
232 #endif
233 n = ide_write(curr_device, blk, cnt, (ulong *) addr);
234
235 printf("%ld blocks written: %s\n",
236 n, (n == cnt) ? "OK" : "ERROR");
237 if (n == cnt)
238 return 0;
239 else
240 return 1;
241 } else {
242 return CMD_RET_USAGE;
243 }
244
245 return rcode;
246 }
247 }
248
249 int do_diskboot(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
250 {
251 return common_diskboot(cmdtp, "ide", argc, argv);
252 }
253
254 /* ------------------------------------------------------------------------- */
255
256 void __ide_led(uchar led, uchar status)
257 {
258 #if defined(CONFIG_IDE_LED) && defined(PER8_BASE) /* required by LED_PORT */
259 static uchar led_buffer; /* Buffer for current LED status */
260
261 uchar *led_port = LED_PORT;
262
263 if (status) /* switch LED on */
264 led_buffer |= led;
265 else /* switch LED off */
266 led_buffer &= ~led;
267
268 *led_port = led_buffer;
269 #endif
270 }
271
272 void ide_led(uchar led, uchar status)
273 __attribute__ ((weak, alias("__ide_led")));
274
275 #ifndef CONFIG_IDE_LED /* define LED macros, they are not used anyways */
276 # define DEVICE_LED(x) 0
277 # define LED_IDE1 1
278 # define LED_IDE2 2
279 #endif
280
281 /* ------------------------------------------------------------------------- */
282
283 inline void __ide_outb(int dev, int port, unsigned char val)
284 {
285 debug("ide_outb (dev= %d, port= 0x%x, val= 0x%02x) : @ 0x%08lx\n",
286 dev, port, val,
287 (ATA_CURR_BASE(dev) + CONFIG_SYS_ATA_PORT_ADDR(port)));
288
289 #if defined(CONFIG_IDE_AHB)
290 if (port) {
291 /* write command */
292 ide_write_register(dev, port, val);
293 } else {
294 /* write data */
295 outb(val, (ATA_CURR_BASE(dev)));
296 }
297 #else
298 outb(val, (ATA_CURR_BASE(dev) + CONFIG_SYS_ATA_PORT_ADDR(port)));
299 #endif
300 }
301
302 void ide_outb(int dev, int port, unsigned char val)
303 __attribute__ ((weak, alias("__ide_outb")));
304
305 inline unsigned char __ide_inb(int dev, int port)
306 {
307 uchar val;
308
309 #if defined(CONFIG_IDE_AHB)
310 val = ide_read_register(dev, port);
311 #else
312 val = inb((ATA_CURR_BASE(dev) + CONFIG_SYS_ATA_PORT_ADDR(port)));
313 #endif
314
315 debug("ide_inb (dev= %d, port= 0x%x) : @ 0x%08lx -> 0x%02x\n",
316 dev, port,
317 (ATA_CURR_BASE(dev) + CONFIG_SYS_ATA_PORT_ADDR(port)), val);
318 return val;
319 }
320
321 unsigned char ide_inb(int dev, int port)
322 __attribute__ ((weak, alias("__ide_inb")));
323
324 void ide_init(void)
325 {
326 unsigned char c;
327 int i, bus;
328
329 #ifdef CONFIG_IDE_8xx_PCCARD
330 extern int ide_devices_found; /* Initialized in check_ide_device() */
331 #endif /* CONFIG_IDE_8xx_PCCARD */
332
333 #ifdef CONFIG_IDE_PREINIT
334 WATCHDOG_RESET();
335
336 if (ide_preinit()) {
337 puts("ide_preinit failed\n");
338 return;
339 }
340 #endif /* CONFIG_IDE_PREINIT */
341
342 WATCHDOG_RESET();
343
344 /*
345 * Reset the IDE just to be sure.
346 * Light LED's to show
347 */
348 ide_led((LED_IDE1 | LED_IDE2), 1); /* LED's on */
349
350 /* ATAPI Drives seems to need a proper IDE Reset */
351 ide_reset();
352
353 #ifdef CONFIG_IDE_INIT_POSTRESET
354 WATCHDOG_RESET();
355
356 if (ide_init_postreset()) {
357 puts("ide_preinit_postreset failed\n");
358 return;
359 }
360 #endif /* CONFIG_IDE_INIT_POSTRESET */
361
362 /*
363 * Wait for IDE to get ready.
364 * According to spec, this can take up to 31 seconds!
365 */
366 for (bus = 0; bus < CONFIG_SYS_IDE_MAXBUS; ++bus) {
367 int dev =
368 bus * (CONFIG_SYS_IDE_MAXDEVICE /
369 CONFIG_SYS_IDE_MAXBUS);
370
371 #ifdef CONFIG_IDE_8xx_PCCARD
372 /* Skip non-ide devices from probing */
373 if ((ide_devices_found & (1 << bus)) == 0) {
374 ide_led((LED_IDE1 | LED_IDE2), 0); /* LED's off */
375 continue;
376 }
377 #endif
378 printf("Bus %d: ", bus);
379
380 ide_bus_ok[bus] = 0;
381
382 /* Select device
383 */
384 udelay(100000); /* 100 ms */
385 ide_outb(dev, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(dev));
386 udelay(100000); /* 100 ms */
387 i = 0;
388 do {
389 udelay(10000); /* 10 ms */
390
391 c = ide_inb(dev, ATA_STATUS);
392 i++;
393 if (i > (ATA_RESET_TIME * 100)) {
394 puts("** Timeout **\n");
395 /* LED's off */
396 ide_led((LED_IDE1 | LED_IDE2), 0);
397 return;
398 }
399 if ((i >= 100) && ((i % 100) == 0))
400 putc('.');
401
402 } while (c & ATA_STAT_BUSY);
403
404 if (c & (ATA_STAT_BUSY | ATA_STAT_FAULT)) {
405 puts("not available ");
406 debug("Status = 0x%02X ", c);
407 #ifndef CONFIG_ATAPI /* ATAPI Devices do not set DRDY */
408 } else if ((c & ATA_STAT_READY) == 0) {
409 puts("not available ");
410 debug("Status = 0x%02X ", c);
411 #endif
412 } else {
413 puts("OK ");
414 ide_bus_ok[bus] = 1;
415 }
416 WATCHDOG_RESET();
417 }
418
419 putc('\n');
420
421 ide_led((LED_IDE1 | LED_IDE2), 0); /* LED's off */
422
423 curr_device = -1;
424 for (i = 0; i < CONFIG_SYS_IDE_MAXDEVICE; ++i) {
425 int led = (IDE_BUS(i) == 0) ? LED_IDE1 : LED_IDE2;
426 ide_dev_desc[i].type = DEV_TYPE_UNKNOWN;
427 ide_dev_desc[i].if_type = IF_TYPE_IDE;
428 ide_dev_desc[i].dev = i;
429 ide_dev_desc[i].part_type = PART_TYPE_UNKNOWN;
430 ide_dev_desc[i].blksz = 0;
431 ide_dev_desc[i].log2blksz =
432 LOG2_INVALID(typeof(ide_dev_desc[i].log2blksz));
433 ide_dev_desc[i].lba = 0;
434 ide_dev_desc[i].block_read = ide_read;
435 ide_dev_desc[i].block_write = ide_write;
436 if (!ide_bus_ok[IDE_BUS(i)])
437 continue;
438 ide_led(led, 1); /* LED on */
439 ide_ident(&ide_dev_desc[i]);
440 ide_led(led, 0); /* LED off */
441 dev_print(&ide_dev_desc[i]);
442
443 if ((ide_dev_desc[i].lba > 0) && (ide_dev_desc[i].blksz > 0)) {
444 /* initialize partition type */
445 init_part(&ide_dev_desc[i]);
446 if (curr_device < 0)
447 curr_device = i;
448 }
449 }
450 WATCHDOG_RESET();
451 }
452
453 /* ------------------------------------------------------------------------- */
454
455 #ifdef CONFIG_PARTITIONS
456 block_dev_desc_t *ide_get_dev(int dev)
457 {
458 return (dev < CONFIG_SYS_IDE_MAXDEVICE) ? &ide_dev_desc[dev] : NULL;
459 }
460 #endif
461
462 /* ------------------------------------------------------------------------- */
463
464 void ide_input_swap_data(int dev, ulong *sect_buf, int words)
465 __attribute__ ((weak, alias("__ide_input_swap_data")));
466
467 void ide_input_data(int dev, ulong *sect_buf, int words)
468 __attribute__ ((weak, alias("__ide_input_data")));
469
470 void ide_output_data(int dev, const ulong *sect_buf, int words)
471 __attribute__ ((weak, alias("__ide_output_data")));
472
473 /* We only need to swap data if we are running on a big endian cpu. */
474 #if defined(__LITTLE_ENDIAN)
475 void __ide_input_swap_data(int dev, ulong *sect_buf, int words)
476 {
477 ide_input_data(dev, sect_buf, words);
478 }
479 #else
480 void __ide_input_swap_data(int dev, ulong *sect_buf, int words)
481 {
482 volatile ushort *pbuf =
483 (ushort *) (ATA_CURR_BASE(dev) + ATA_DATA_REG);
484 ushort *dbuf = (ushort *) sect_buf;
485
486 debug("in input swap data base for read is %lx\n",
487 (unsigned long) pbuf);
488
489 while (words--) {
490 #ifdef __MIPS__
491 *dbuf++ = swab16p((u16 *) pbuf);
492 *dbuf++ = swab16p((u16 *) pbuf);
493 #else
494 *dbuf++ = ld_le16(pbuf);
495 *dbuf++ = ld_le16(pbuf);
496 #endif /* !MIPS */
497 }
498 }
499 #endif /* __LITTLE_ENDIAN */
500
501
502 #if defined(CONFIG_IDE_SWAP_IO)
503 void __ide_output_data(int dev, const ulong *sect_buf, int words)
504 {
505 ushort *dbuf;
506 volatile ushort *pbuf;
507
508 pbuf = (ushort *) (ATA_CURR_BASE(dev) + ATA_DATA_REG);
509 dbuf = (ushort *) sect_buf;
510 while (words--) {
511 EIEIO;
512 *pbuf = *dbuf++;
513 EIEIO;
514 *pbuf = *dbuf++;
515 }
516 }
517 #else /* ! CONFIG_IDE_SWAP_IO */
518 void __ide_output_data(int dev, const ulong *sect_buf, int words)
519 {
520 #if defined(CONFIG_IDE_AHB)
521 ide_write_data(dev, sect_buf, words);
522 #else
523 outsw(ATA_CURR_BASE(dev) + ATA_DATA_REG, sect_buf, words << 1);
524 #endif
525 }
526 #endif /* CONFIG_IDE_SWAP_IO */
527
528 #if defined(CONFIG_IDE_SWAP_IO)
529 void __ide_input_data(int dev, ulong *sect_buf, int words)
530 {
531 ushort *dbuf;
532 volatile ushort *pbuf;
533
534 pbuf = (ushort *) (ATA_CURR_BASE(dev) + ATA_DATA_REG);
535 dbuf = (ushort *) sect_buf;
536
537 debug("in input data base for read is %lx\n", (unsigned long) pbuf);
538
539 while (words--) {
540 EIEIO;
541 *dbuf++ = *pbuf;
542 EIEIO;
543 *dbuf++ = *pbuf;
544 }
545 }
546 #else /* ! CONFIG_IDE_SWAP_IO */
547 void __ide_input_data(int dev, ulong *sect_buf, int words)
548 {
549 #if defined(CONFIG_IDE_AHB)
550 ide_read_data(dev, sect_buf, words);
551 #else
552 insw(ATA_CURR_BASE(dev) + ATA_DATA_REG, sect_buf, words << 1);
553 #endif
554 }
555
556 #endif /* CONFIG_IDE_SWAP_IO */
557
558 /* -------------------------------------------------------------------------
559 */
560 static void ide_ident(block_dev_desc_t *dev_desc)
561 {
562 unsigned char c;
563 hd_driveid_t iop;
564
565 #ifdef CONFIG_ATAPI
566 int retries = 0;
567 #endif
568 int device;
569
570 device = dev_desc->dev;
571 printf(" Device %d: ", device);
572
573 ide_led(DEVICE_LED(device), 1); /* LED on */
574 /* Select device
575 */
576 ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
577 dev_desc->if_type = IF_TYPE_IDE;
578 #ifdef CONFIG_ATAPI
579
580 retries = 0;
581
582 /* Warning: This will be tricky to read */
583 while (retries <= 1) {
584 /* check signature */
585 if ((ide_inb(device, ATA_SECT_CNT) == 0x01) &&
586 (ide_inb(device, ATA_SECT_NUM) == 0x01) &&
587 (ide_inb(device, ATA_CYL_LOW) == 0x14) &&
588 (ide_inb(device, ATA_CYL_HIGH) == 0xEB)) {
589 /* ATAPI Signature found */
590 dev_desc->if_type = IF_TYPE_ATAPI;
591 /*
592 * Start Ident Command
593 */
594 ide_outb(device, ATA_COMMAND, ATAPI_CMD_IDENT);
595 /*
596 * Wait for completion - ATAPI devices need more time
597 * to become ready
598 */
599 c = ide_wait(device, ATAPI_TIME_OUT);
600 } else
601 #endif
602 {
603 /*
604 * Start Ident Command
605 */
606 ide_outb(device, ATA_COMMAND, ATA_CMD_IDENT);
607
608 /*
609 * Wait for completion
610 */
611 c = ide_wait(device, IDE_TIME_OUT);
612 }
613 ide_led(DEVICE_LED(device), 0); /* LED off */
614
615 if (((c & ATA_STAT_DRQ) == 0) ||
616 ((c & (ATA_STAT_FAULT | ATA_STAT_ERR)) != 0)) {
617 #ifdef CONFIG_ATAPI
618 {
619 /*
620 * Need to soft reset the device
621 * in case it's an ATAPI...
622 */
623 debug("Retrying...\n");
624 ide_outb(device, ATA_DEV_HD,
625 ATA_LBA | ATA_DEVICE(device));
626 udelay(100000);
627 ide_outb(device, ATA_COMMAND, 0x08);
628 udelay(500000); /* 500 ms */
629 }
630 /*
631 * Select device
632 */
633 ide_outb(device, ATA_DEV_HD,
634 ATA_LBA | ATA_DEVICE(device));
635 retries++;
636 #else
637 return;
638 #endif
639 }
640 #ifdef CONFIG_ATAPI
641 else
642 break;
643 } /* see above - ugly to read */
644
645 if (retries == 2) /* Not found */
646 return;
647 #endif
648
649 ide_input_swap_data(device, (ulong *)&iop, ATA_SECTORWORDS);
650
651 ident_cpy((unsigned char *) dev_desc->revision, iop.fw_rev,
652 sizeof(dev_desc->revision));
653 ident_cpy((unsigned char *) dev_desc->vendor, iop.model,
654 sizeof(dev_desc->vendor));
655 ident_cpy((unsigned char *) dev_desc->product, iop.serial_no,
656 sizeof(dev_desc->product));
657 #ifdef __LITTLE_ENDIAN
658 /*
659 * firmware revision, model, and serial number have Big Endian Byte
660 * order in Word. Convert all three to little endian.
661 *
662 * See CF+ and CompactFlash Specification Revision 2.0:
663 * 6.2.1.6: Identify Drive, Table 39 for more details
664 */
665
666 strswab(dev_desc->revision);
667 strswab(dev_desc->vendor);
668 strswab(dev_desc->product);
669 #endif /* __LITTLE_ENDIAN */
670
671 if ((iop.config & 0x0080) == 0x0080)
672 dev_desc->removable = 1;
673 else
674 dev_desc->removable = 0;
675
676 #ifdef CONFIG_ATAPI
677 if (dev_desc->if_type == IF_TYPE_ATAPI) {
678 atapi_inquiry(dev_desc);
679 return;
680 }
681 #endif /* CONFIG_ATAPI */
682
683 #ifdef __BIG_ENDIAN
684 /* swap shorts */
685 dev_desc->lba = (iop.lba_capacity << 16) | (iop.lba_capacity >> 16);
686 #else /* ! __BIG_ENDIAN */
687 /*
688 * do not swap shorts on little endian
689 *
690 * See CF+ and CompactFlash Specification Revision 2.0:
691 * 6.2.1.6: Identfy Drive, Table 39, Word Address 57-58 for details.
692 */
693 dev_desc->lba = iop.lba_capacity;
694 #endif /* __BIG_ENDIAN */
695
696 #ifdef CONFIG_LBA48
697 if (iop.command_set_2 & 0x0400) { /* LBA 48 support */
698 dev_desc->lba48 = 1;
699 dev_desc->lba = (unsigned long long) iop.lba48_capacity[0] |
700 ((unsigned long long) iop.lba48_capacity[1] << 16) |
701 ((unsigned long long) iop.lba48_capacity[2] << 32) |
702 ((unsigned long long) iop.lba48_capacity[3] << 48);
703 } else {
704 dev_desc->lba48 = 0;
705 }
706 #endif /* CONFIG_LBA48 */
707 /* assuming HD */
708 dev_desc->type = DEV_TYPE_HARDDISK;
709 dev_desc->blksz = ATA_BLOCKSIZE;
710 dev_desc->log2blksz = LOG2(dev_desc->blksz);
711 dev_desc->lun = 0; /* just to fill something in... */
712
713 #if 0 /* only used to test the powersaving mode,
714 * if enabled, the drive goes after 5 sec
715 * in standby mode */
716 ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
717 c = ide_wait(device, IDE_TIME_OUT);
718 ide_outb(device, ATA_SECT_CNT, 1);
719 ide_outb(device, ATA_LBA_LOW, 0);
720 ide_outb(device, ATA_LBA_MID, 0);
721 ide_outb(device, ATA_LBA_HIGH, 0);
722 ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
723 ide_outb(device, ATA_COMMAND, 0xe3);
724 udelay(50);
725 c = ide_wait(device, IDE_TIME_OUT); /* can't take over 500 ms */
726 #endif
727 }
728
729
730 /* ------------------------------------------------------------------------- */
731
732 ulong ide_read(int device, lbaint_t blknr, lbaint_t blkcnt, void *buffer)
733 {
734 ulong n = 0;
735 unsigned char c;
736 unsigned char pwrsave = 0; /* power save */
737
738 #ifdef CONFIG_LBA48
739 unsigned char lba48 = 0;
740
741 if (blknr & 0x0000fffff0000000ULL) {
742 /* more than 28 bits used, use 48bit mode */
743 lba48 = 1;
744 }
745 #endif
746 debug("ide_read dev %d start " LBAF ", blocks " LBAF " buffer at %lX\n",
747 device, blknr, blkcnt, (ulong) buffer);
748
749 ide_led(DEVICE_LED(device), 1); /* LED on */
750
751 /* Select device
752 */
753 ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
754 c = ide_wait(device, IDE_TIME_OUT);
755
756 if (c & ATA_STAT_BUSY) {
757 printf("IDE read: device %d not ready\n", device);
758 goto IDE_READ_E;
759 }
760
761 /* first check if the drive is in Powersaving mode, if yes,
762 * increase the timeout value */
763 ide_outb(device, ATA_COMMAND, ATA_CMD_CHK_PWR);
764 udelay(50);
765
766 c = ide_wait(device, IDE_TIME_OUT); /* can't take over 500 ms */
767
768 if (c & ATA_STAT_BUSY) {
769 printf("IDE read: device %d not ready\n", device);
770 goto IDE_READ_E;
771 }
772 if ((c & ATA_STAT_ERR) == ATA_STAT_ERR) {
773 printf("No Powersaving mode %X\n", c);
774 } else {
775 c = ide_inb(device, ATA_SECT_CNT);
776 debug("Powersaving %02X\n", c);
777 if (c == 0)
778 pwrsave = 1;
779 }
780
781
782 while (blkcnt-- > 0) {
783
784 c = ide_wait(device, IDE_TIME_OUT);
785
786 if (c & ATA_STAT_BUSY) {
787 printf("IDE read: device %d not ready\n", device);
788 break;
789 }
790 #ifdef CONFIG_LBA48
791 if (lba48) {
792 /* write high bits */
793 ide_outb(device, ATA_SECT_CNT, 0);
794 ide_outb(device, ATA_LBA_LOW, (blknr >> 24) & 0xFF);
795 #ifdef CONFIG_SYS_64BIT_LBA
796 ide_outb(device, ATA_LBA_MID, (blknr >> 32) & 0xFF);
797 ide_outb(device, ATA_LBA_HIGH, (blknr >> 40) & 0xFF);
798 #else
799 ide_outb(device, ATA_LBA_MID, 0);
800 ide_outb(device, ATA_LBA_HIGH, 0);
801 #endif
802 }
803 #endif
804 ide_outb(device, ATA_SECT_CNT, 1);
805 ide_outb(device, ATA_LBA_LOW, (blknr >> 0) & 0xFF);
806 ide_outb(device, ATA_LBA_MID, (blknr >> 8) & 0xFF);
807 ide_outb(device, ATA_LBA_HIGH, (blknr >> 16) & 0xFF);
808
809 #ifdef CONFIG_LBA48
810 if (lba48) {
811 ide_outb(device, ATA_DEV_HD,
812 ATA_LBA | ATA_DEVICE(device));
813 ide_outb(device, ATA_COMMAND, ATA_CMD_READ_EXT);
814
815 } else
816 #endif
817 {
818 ide_outb(device, ATA_DEV_HD, ATA_LBA |
819 ATA_DEVICE(device) | ((blknr >> 24) & 0xF));
820 ide_outb(device, ATA_COMMAND, ATA_CMD_READ);
821 }
822
823 udelay(50);
824
825 if (pwrsave) {
826 /* may take up to 4 sec */
827 c = ide_wait(device, IDE_SPIN_UP_TIME_OUT);
828 pwrsave = 0;
829 } else {
830 /* can't take over 500 ms */
831 c = ide_wait(device, IDE_TIME_OUT);
832 }
833
834 if ((c & (ATA_STAT_DRQ | ATA_STAT_BUSY | ATA_STAT_ERR)) !=
835 ATA_STAT_DRQ) {
836 printf("Error (no IRQ) dev %d blk " LBAF ": status "
837 "%#02x\n", device, blknr, c);
838 break;
839 }
840
841 ide_input_data(device, buffer, ATA_SECTORWORDS);
842 (void) ide_inb(device, ATA_STATUS); /* clear IRQ */
843
844 ++n;
845 ++blknr;
846 buffer += ATA_BLOCKSIZE;
847 }
848 IDE_READ_E:
849 ide_led(DEVICE_LED(device), 0); /* LED off */
850 return (n);
851 }
852
853 /* ------------------------------------------------------------------------- */
854
855
856 ulong ide_write(int device, lbaint_t blknr, lbaint_t blkcnt, const void *buffer)
857 {
858 ulong n = 0;
859 unsigned char c;
860
861 #ifdef CONFIG_LBA48
862 unsigned char lba48 = 0;
863
864 if (blknr & 0x0000fffff0000000ULL) {
865 /* more than 28 bits used, use 48bit mode */
866 lba48 = 1;
867 }
868 #endif
869
870 ide_led(DEVICE_LED(device), 1); /* LED on */
871
872 /* Select device
873 */
874 ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
875
876 while (blkcnt-- > 0) {
877
878 c = ide_wait(device, IDE_TIME_OUT);
879
880 if (c & ATA_STAT_BUSY) {
881 printf("IDE read: device %d not ready\n", device);
882 goto WR_OUT;
883 }
884 #ifdef CONFIG_LBA48
885 if (lba48) {
886 /* write high bits */
887 ide_outb(device, ATA_SECT_CNT, 0);
888 ide_outb(device, ATA_LBA_LOW, (blknr >> 24) & 0xFF);
889 #ifdef CONFIG_SYS_64BIT_LBA
890 ide_outb(device, ATA_LBA_MID, (blknr >> 32) & 0xFF);
891 ide_outb(device, ATA_LBA_HIGH, (blknr >> 40) & 0xFF);
892 #else
893 ide_outb(device, ATA_LBA_MID, 0);
894 ide_outb(device, ATA_LBA_HIGH, 0);
895 #endif
896 }
897 #endif
898 ide_outb(device, ATA_SECT_CNT, 1);
899 ide_outb(device, ATA_LBA_LOW, (blknr >> 0) & 0xFF);
900 ide_outb(device, ATA_LBA_MID, (blknr >> 8) & 0xFF);
901 ide_outb(device, ATA_LBA_HIGH, (blknr >> 16) & 0xFF);
902
903 #ifdef CONFIG_LBA48
904 if (lba48) {
905 ide_outb(device, ATA_DEV_HD,
906 ATA_LBA | ATA_DEVICE(device));
907 ide_outb(device, ATA_COMMAND, ATA_CMD_WRITE_EXT);
908
909 } else
910 #endif
911 {
912 ide_outb(device, ATA_DEV_HD, ATA_LBA |
913 ATA_DEVICE(device) | ((blknr >> 24) & 0xF));
914 ide_outb(device, ATA_COMMAND, ATA_CMD_WRITE);
915 }
916
917 udelay(50);
918
919 /* can't take over 500 ms */
920 c = ide_wait(device, IDE_TIME_OUT);
921
922 if ((c & (ATA_STAT_DRQ | ATA_STAT_BUSY | ATA_STAT_ERR)) !=
923 ATA_STAT_DRQ) {
924 printf("Error (no IRQ) dev %d blk " LBAF ": status "
925 "%#02x\n", device, blknr, c);
926 goto WR_OUT;
927 }
928
929 ide_output_data(device, buffer, ATA_SECTORWORDS);
930 c = ide_inb(device, ATA_STATUS); /* clear IRQ */
931 ++n;
932 ++blknr;
933 buffer += ATA_BLOCKSIZE;
934 }
935 WR_OUT:
936 ide_led(DEVICE_LED(device), 0); /* LED off */
937 return (n);
938 }
939
940 /* ------------------------------------------------------------------------- */
941
942 /*
943 * copy src to dest, skipping leading and trailing blanks and null
944 * terminate the string
945 * "len" is the size of available memory including the terminating '\0'
946 */
947 static void ident_cpy(unsigned char *dst, unsigned char *src,
948 unsigned int len)
949 {
950 unsigned char *end, *last;
951
952 last = dst;
953 end = src + len - 1;
954
955 /* reserve space for '\0' */
956 if (len < 2)
957 goto OUT;
958
959 /* skip leading white space */
960 while ((*src) && (src < end) && (*src == ' '))
961 ++src;
962
963 /* copy string, omitting trailing white space */
964 while ((*src) && (src < end)) {
965 *dst++ = *src;
966 if (*src++ != ' ')
967 last = dst;
968 }
969 OUT:
970 *last = '\0';
971 }
972
973 /* ------------------------------------------------------------------------- */
974
975 /*
976 * Wait until Busy bit is off, or timeout (in ms)
977 * Return last status
978 */
979 static uchar ide_wait(int dev, ulong t)
980 {
981 ulong delay = 10 * t; /* poll every 100 us */
982 uchar c;
983
984 while ((c = ide_inb(dev, ATA_STATUS)) & ATA_STAT_BUSY) {
985 udelay(100);
986 if (delay-- == 0)
987 break;
988 }
989 return (c);
990 }
991
992 /* ------------------------------------------------------------------------- */
993
994 #ifdef CONFIG_IDE_RESET
995 extern void ide_set_reset(int idereset);
996
997 static void ide_reset(void)
998 {
999 int i;
1000
1001 curr_device = -1;
1002 for (i = 0; i < CONFIG_SYS_IDE_MAXBUS; ++i)
1003 ide_bus_ok[i] = 0;
1004 for (i = 0; i < CONFIG_SYS_IDE_MAXDEVICE; ++i)
1005 ide_dev_desc[i].type = DEV_TYPE_UNKNOWN;
1006
1007 ide_set_reset(1); /* assert reset */
1008
1009 /* the reset signal shall be asserted for et least 25 us */
1010 udelay(25);
1011
1012 WATCHDOG_RESET();
1013
1014 /* de-assert RESET signal */
1015 ide_set_reset(0);
1016
1017 /* wait 250 ms */
1018 for (i = 0; i < 250; ++i)
1019 udelay(1000);
1020 }
1021
1022 #endif /* CONFIG_IDE_RESET */
1023
1024 /* ------------------------------------------------------------------------- */
1025
1026 #if defined(CONFIG_OF_IDE_FIXUP)
1027 int ide_device_present(int dev)
1028 {
1029 if (dev >= CONFIG_SYS_IDE_MAXBUS)
1030 return 0;
1031 return (ide_dev_desc[dev].type == DEV_TYPE_UNKNOWN ? 0 : 1);
1032 }
1033 #endif
1034 /* ------------------------------------------------------------------------- */
1035
1036 #ifdef CONFIG_ATAPI
1037 /****************************************************************************
1038 * ATAPI Support
1039 */
1040
1041 void ide_input_data_shorts(int dev, ushort *sect_buf, int shorts)
1042 __attribute__ ((weak, alias("__ide_input_data_shorts")));
1043
1044 void ide_output_data_shorts(int dev, ushort *sect_buf, int shorts)
1045 __attribute__ ((weak, alias("__ide_output_data_shorts")));
1046
1047
1048 #if defined(CONFIG_IDE_SWAP_IO)
1049 /* since ATAPI may use commands with not 4 bytes alligned length
1050 * we have our own transfer functions, 2 bytes alligned */
1051 void __ide_output_data_shorts(int dev, ushort *sect_buf, int shorts)
1052 {
1053 ushort *dbuf;
1054 volatile ushort *pbuf;
1055
1056 pbuf = (ushort *) (ATA_CURR_BASE(dev) + ATA_DATA_REG);
1057 dbuf = (ushort *) sect_buf;
1058
1059 debug("in output data shorts base for read is %lx\n",
1060 (unsigned long) pbuf);
1061
1062 while (shorts--) {
1063 EIEIO;
1064 *pbuf = *dbuf++;
1065 }
1066 }
1067
1068 void __ide_input_data_shorts(int dev, ushort *sect_buf, int shorts)
1069 {
1070 ushort *dbuf;
1071 volatile ushort *pbuf;
1072
1073 pbuf = (ushort *) (ATA_CURR_BASE(dev) + ATA_DATA_REG);
1074 dbuf = (ushort *) sect_buf;
1075
1076 debug("in input data shorts base for read is %lx\n",
1077 (unsigned long) pbuf);
1078
1079 while (shorts--) {
1080 EIEIO;
1081 *dbuf++ = *pbuf;
1082 }
1083 }
1084
1085 #else /* ! CONFIG_IDE_SWAP_IO */
1086 void __ide_output_data_shorts(int dev, ushort *sect_buf, int shorts)
1087 {
1088 outsw(ATA_CURR_BASE(dev) + ATA_DATA_REG, sect_buf, shorts);
1089 }
1090
1091 void __ide_input_data_shorts(int dev, ushort *sect_buf, int shorts)
1092 {
1093 insw(ATA_CURR_BASE(dev) + ATA_DATA_REG, sect_buf, shorts);
1094 }
1095
1096 #endif /* CONFIG_IDE_SWAP_IO */
1097
1098 /*
1099 * Wait until (Status & mask) == res, or timeout (in ms)
1100 * Return last status
1101 * This is used since some ATAPI CD ROMs clears their Busy Bit first
1102 * and then they set their DRQ Bit
1103 */
1104 static uchar atapi_wait_mask(int dev, ulong t, uchar mask, uchar res)
1105 {
1106 ulong delay = 10 * t; /* poll every 100 us */
1107 uchar c;
1108
1109 /* prevents to read the status before valid */
1110 c = ide_inb(dev, ATA_DEV_CTL);
1111
1112 while (((c = ide_inb(dev, ATA_STATUS)) & mask) != res) {
1113 /* break if error occurs (doesn't make sense to wait more) */
1114 if ((c & ATA_STAT_ERR) == ATA_STAT_ERR)
1115 break;
1116 udelay(100);
1117 if (delay-- == 0)
1118 break;
1119 }
1120 return (c);
1121 }
1122
1123 /*
1124 * issue an atapi command
1125 */
1126 unsigned char atapi_issue(int device, unsigned char *ccb, int ccblen,
1127 unsigned char *buffer, int buflen)
1128 {
1129 unsigned char c, err, mask, res;
1130 int n;
1131
1132 ide_led(DEVICE_LED(device), 1); /* LED on */
1133
1134 /* Select device
1135 */
1136 mask = ATA_STAT_BUSY | ATA_STAT_DRQ;
1137 res = 0;
1138 ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
1139 c = atapi_wait_mask(device, ATAPI_TIME_OUT, mask, res);
1140 if ((c & mask) != res) {
1141 printf("ATAPI_ISSUE: device %d not ready status %X\n", device,
1142 c);
1143 err = 0xFF;
1144 goto AI_OUT;
1145 }
1146 /* write taskfile */
1147 ide_outb(device, ATA_ERROR_REG, 0); /* no DMA, no overlaped */
1148 ide_outb(device, ATA_SECT_CNT, 0);
1149 ide_outb(device, ATA_SECT_NUM, 0);
1150 ide_outb(device, ATA_CYL_LOW, (unsigned char) (buflen & 0xFF));
1151 ide_outb(device, ATA_CYL_HIGH,
1152 (unsigned char) ((buflen >> 8) & 0xFF));
1153 ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
1154
1155 ide_outb(device, ATA_COMMAND, ATAPI_CMD_PACKET);
1156 udelay(50);
1157
1158 mask = ATA_STAT_DRQ | ATA_STAT_BUSY | ATA_STAT_ERR;
1159 res = ATA_STAT_DRQ;
1160 c = atapi_wait_mask(device, ATAPI_TIME_OUT, mask, res);
1161
1162 if ((c & mask) != res) { /* DRQ must be 1, BSY 0 */
1163 printf("ATAPI_ISSUE: Error (no IRQ) before sending ccb dev %d status 0x%02x\n",
1164 device, c);
1165 err = 0xFF;
1166 goto AI_OUT;
1167 }
1168
1169 /* write command block */
1170 ide_output_data_shorts(device, (unsigned short *) ccb, ccblen / 2);
1171
1172 /* ATAPI Command written wait for completition */
1173 udelay(5000); /* device must set bsy */
1174
1175 mask = ATA_STAT_DRQ | ATA_STAT_BUSY | ATA_STAT_ERR;
1176 /*
1177 * if no data wait for DRQ = 0 BSY = 0
1178 * if data wait for DRQ = 1 BSY = 0
1179 */
1180 res = 0;
1181 if (buflen)
1182 res = ATA_STAT_DRQ;
1183 c = atapi_wait_mask(device, ATAPI_TIME_OUT, mask, res);
1184 if ((c & mask) != res) {
1185 if (c & ATA_STAT_ERR) {
1186 err = (ide_inb(device, ATA_ERROR_REG)) >> 4;
1187 debug("atapi_issue 1 returned sense key %X status %02X\n",
1188 err, c);
1189 } else {
1190 printf("ATAPI_ISSUE: (no DRQ) after sending ccb (%x) status 0x%02x\n",
1191 ccb[0], c);
1192 err = 0xFF;
1193 }
1194 goto AI_OUT;
1195 }
1196 n = ide_inb(device, ATA_CYL_HIGH);
1197 n <<= 8;
1198 n += ide_inb(device, ATA_CYL_LOW);
1199 if (n > buflen) {
1200 printf("ERROR, transfer bytes %d requested only %d\n", n,
1201 buflen);
1202 err = 0xff;
1203 goto AI_OUT;
1204 }
1205 if ((n == 0) && (buflen < 0)) {
1206 printf("ERROR, transfer bytes %d requested %d\n", n, buflen);
1207 err = 0xff;
1208 goto AI_OUT;
1209 }
1210 if (n != buflen) {
1211 debug("WARNING, transfer bytes %d not equal with requested %d\n",
1212 n, buflen);
1213 }
1214 if (n != 0) { /* data transfer */
1215 debug("ATAPI_ISSUE: %d Bytes to transfer\n", n);
1216 /* we transfer shorts */
1217 n >>= 1;
1218 /* ok now decide if it is an in or output */
1219 if ((ide_inb(device, ATA_SECT_CNT) & 0x02) == 0) {
1220 debug("Write to device\n");
1221 ide_output_data_shorts(device,
1222 (unsigned short *) buffer, n);
1223 } else {
1224 debug("Read from device @ %p shorts %d\n", buffer, n);
1225 ide_input_data_shorts(device,
1226 (unsigned short *) buffer, n);
1227 }
1228 }
1229 udelay(5000); /* seems that some CD ROMs need this... */
1230 mask = ATA_STAT_BUSY | ATA_STAT_ERR;
1231 res = 0;
1232 c = atapi_wait_mask(device, ATAPI_TIME_OUT, mask, res);
1233 if ((c & ATA_STAT_ERR) == ATA_STAT_ERR) {
1234 err = (ide_inb(device, ATA_ERROR_REG) >> 4);
1235 debug("atapi_issue 2 returned sense key %X status %X\n", err,
1236 c);
1237 } else {
1238 err = 0;
1239 }
1240 AI_OUT:
1241 ide_led(DEVICE_LED(device), 0); /* LED off */
1242 return (err);
1243 }
1244
1245 /*
1246 * sending the command to atapi_issue. If an status other than good
1247 * returns, an request_sense will be issued
1248 */
1249
1250 #define ATAPI_DRIVE_NOT_READY 100
1251 #define ATAPI_UNIT_ATTN 10
1252
1253 unsigned char atapi_issue_autoreq(int device,
1254 unsigned char *ccb,
1255 int ccblen,
1256 unsigned char *buffer, int buflen)
1257 {
1258 unsigned char sense_data[18], sense_ccb[12];
1259 unsigned char res, key, asc, ascq;
1260 int notready, unitattn;
1261
1262 unitattn = ATAPI_UNIT_ATTN;
1263 notready = ATAPI_DRIVE_NOT_READY;
1264
1265 retry:
1266 res = atapi_issue(device, ccb, ccblen, buffer, buflen);
1267 if (res == 0)
1268 return 0; /* Ok */
1269
1270 if (res == 0xFF)
1271 return 0xFF; /* error */
1272
1273 debug("(auto_req)atapi_issue returned sense key %X\n", res);
1274
1275 memset(sense_ccb, 0, sizeof(sense_ccb));
1276 memset(sense_data, 0, sizeof(sense_data));
1277 sense_ccb[0] = ATAPI_CMD_REQ_SENSE;
1278 sense_ccb[4] = 18; /* allocation Length */
1279
1280 res = atapi_issue(device, sense_ccb, 12, sense_data, 18);
1281 key = (sense_data[2] & 0xF);
1282 asc = (sense_data[12]);
1283 ascq = (sense_data[13]);
1284
1285 debug("ATAPI_CMD_REQ_SENSE returned %x\n", res);
1286 debug(" Sense page: %02X key %02X ASC %02X ASCQ %02X\n",
1287 sense_data[0], key, asc, ascq);
1288
1289 if ((key == 0))
1290 return 0; /* ok device ready */
1291
1292 if ((key == 6) || (asc == 0x29) || (asc == 0x28)) { /* Unit Attention */
1293 if (unitattn-- > 0) {
1294 udelay(200 * 1000);
1295 goto retry;
1296 }
1297 printf("Unit Attention, tried %d\n", ATAPI_UNIT_ATTN);
1298 goto error;
1299 }
1300 if ((asc == 0x4) && (ascq == 0x1)) {
1301 /* not ready, but will be ready soon */
1302 if (notready-- > 0) {
1303 udelay(200 * 1000);
1304 goto retry;
1305 }
1306 printf("Drive not ready, tried %d times\n",
1307 ATAPI_DRIVE_NOT_READY);
1308 goto error;
1309 }
1310 if (asc == 0x3a) {
1311 debug("Media not present\n");
1312 goto error;
1313 }
1314
1315 printf("ERROR: Unknown Sense key %02X ASC %02X ASCQ %02X\n", key, asc,
1316 ascq);
1317 error:
1318 debug("ERROR Sense key %02X ASC %02X ASCQ %02X\n", key, asc, ascq);
1319 return (0xFF);
1320 }
1321
1322
1323 static void atapi_inquiry(block_dev_desc_t *dev_desc)
1324 {
1325 unsigned char ccb[12]; /* Command descriptor block */
1326 unsigned char iobuf[64]; /* temp buf */
1327 unsigned char c;
1328 int device;
1329
1330 device = dev_desc->dev;
1331 dev_desc->type = DEV_TYPE_UNKNOWN; /* not yet valid */
1332 dev_desc->block_read = atapi_read;
1333
1334 memset(ccb, 0, sizeof(ccb));
1335 memset(iobuf, 0, sizeof(iobuf));
1336
1337 ccb[0] = ATAPI_CMD_INQUIRY;
1338 ccb[4] = 40; /* allocation Legnth */
1339 c = atapi_issue_autoreq(device, ccb, 12, (unsigned char *) iobuf, 40);
1340
1341 debug("ATAPI_CMD_INQUIRY returned %x\n", c);
1342 if (c != 0)
1343 return;
1344
1345 /* copy device ident strings */
1346 ident_cpy((unsigned char *) dev_desc->vendor, &iobuf[8], 8);
1347 ident_cpy((unsigned char *) dev_desc->product, &iobuf[16], 16);
1348 ident_cpy((unsigned char *) dev_desc->revision, &iobuf[32], 5);
1349
1350 dev_desc->lun = 0;
1351 dev_desc->lba = 0;
1352 dev_desc->blksz = 0;
1353 dev_desc->log2blksz = LOG2_INVALID(typeof(dev_desc->log2blksz));
1354 dev_desc->type = iobuf[0] & 0x1f;
1355
1356 if ((iobuf[1] & 0x80) == 0x80)
1357 dev_desc->removable = 1;
1358 else
1359 dev_desc->removable = 0;
1360
1361 memset(ccb, 0, sizeof(ccb));
1362 memset(iobuf, 0, sizeof(iobuf));
1363 ccb[0] = ATAPI_CMD_START_STOP;
1364 ccb[4] = 0x03; /* start */
1365
1366 c = atapi_issue_autoreq(device, ccb, 12, (unsigned char *) iobuf, 0);
1367
1368 debug("ATAPI_CMD_START_STOP returned %x\n", c);
1369 if (c != 0)
1370 return;
1371
1372 memset(ccb, 0, sizeof(ccb));
1373 memset(iobuf, 0, sizeof(iobuf));
1374 c = atapi_issue_autoreq(device, ccb, 12, (unsigned char *) iobuf, 0);
1375
1376 debug("ATAPI_CMD_UNIT_TEST_READY returned %x\n", c);
1377 if (c != 0)
1378 return;
1379
1380 memset(ccb, 0, sizeof(ccb));
1381 memset(iobuf, 0, sizeof(iobuf));
1382 ccb[0] = ATAPI_CMD_READ_CAP;
1383 c = atapi_issue_autoreq(device, ccb, 12, (unsigned char *) iobuf, 8);
1384 debug("ATAPI_CMD_READ_CAP returned %x\n", c);
1385 if (c != 0)
1386 return;
1387
1388 debug("Read Cap: LBA %02X%02X%02X%02X blksize %02X%02X%02X%02X\n",
1389 iobuf[0], iobuf[1], iobuf[2], iobuf[3],
1390 iobuf[4], iobuf[5], iobuf[6], iobuf[7]);
1391
1392 dev_desc->lba = ((unsigned long) iobuf[0] << 24) +
1393 ((unsigned long) iobuf[1] << 16) +
1394 ((unsigned long) iobuf[2] << 8) + ((unsigned long) iobuf[3]);
1395 dev_desc->blksz = ((unsigned long) iobuf[4] << 24) +
1396 ((unsigned long) iobuf[5] << 16) +
1397 ((unsigned long) iobuf[6] << 8) + ((unsigned long) iobuf[7]);
1398 dev_desc->log2blksz = LOG2(dev_desc->blksz);
1399 #ifdef CONFIG_LBA48
1400 /* ATAPI devices cannot use 48bit addressing (ATA/ATAPI v7) */
1401 dev_desc->lba48 = 0;
1402 #endif
1403 return;
1404 }
1405
1406
1407 /*
1408 * atapi_read:
1409 * we transfer only one block per command, since the multiple DRQ per
1410 * command is not yet implemented
1411 */
1412 #define ATAPI_READ_MAX_BYTES 2048 /* we read max 2kbytes */
1413 #define ATAPI_READ_BLOCK_SIZE 2048 /* assuming CD part */
1414 #define ATAPI_READ_MAX_BLOCK (ATAPI_READ_MAX_BYTES/ATAPI_READ_BLOCK_SIZE)
1415
1416 ulong atapi_read(int device, ulong blknr, lbaint_t blkcnt, void *buffer)
1417 {
1418 ulong n = 0;
1419 unsigned char ccb[12]; /* Command descriptor block */
1420 ulong cnt;
1421
1422 debug("atapi_read dev %d start %lX, blocks " LBAF " buffer at %lX\n",
1423 device, blknr, blkcnt, (ulong) buffer);
1424
1425 do {
1426 if (blkcnt > ATAPI_READ_MAX_BLOCK)
1427 cnt = ATAPI_READ_MAX_BLOCK;
1428 else
1429 cnt = blkcnt;
1430
1431 ccb[0] = ATAPI_CMD_READ_12;
1432 ccb[1] = 0; /* reserved */
1433 ccb[2] = (unsigned char) (blknr >> 24) & 0xFF; /* MSB Block */
1434 ccb[3] = (unsigned char) (blknr >> 16) & 0xFF; /* */
1435 ccb[4] = (unsigned char) (blknr >> 8) & 0xFF;
1436 ccb[5] = (unsigned char) blknr & 0xFF; /* LSB Block */
1437 ccb[6] = (unsigned char) (cnt >> 24) & 0xFF; /* MSB Block cnt */
1438 ccb[7] = (unsigned char) (cnt >> 16) & 0xFF;
1439 ccb[8] = (unsigned char) (cnt >> 8) & 0xFF;
1440 ccb[9] = (unsigned char) cnt & 0xFF; /* LSB Block */
1441 ccb[10] = 0; /* reserved */
1442 ccb[11] = 0; /* reserved */
1443
1444 if (atapi_issue_autoreq(device, ccb, 12,
1445 (unsigned char *) buffer,
1446 cnt * ATAPI_READ_BLOCK_SIZE)
1447 == 0xFF) {
1448 return (n);
1449 }
1450 n += cnt;
1451 blkcnt -= cnt;
1452 blknr += cnt;
1453 buffer += (cnt * ATAPI_READ_BLOCK_SIZE);
1454 } while (blkcnt > 0);
1455 return (n);
1456 }
1457
1458 /* ------------------------------------------------------------------------- */
1459
1460 #endif /* CONFIG_ATAPI */
1461
1462 U_BOOT_CMD(ide, 5, 1, do_ide,
1463 "IDE sub-system",
1464 "reset - reset IDE controller\n"
1465 "ide info - show available IDE devices\n"
1466 "ide device [dev] - show or set current device\n"
1467 "ide part [dev] - print partition table of one or all IDE devices\n"
1468 "ide read addr blk# cnt\n"
1469 "ide write addr blk# cnt - read/write `cnt'"
1470 " blocks starting at block `blk#'\n"
1471 " to/from memory address `addr'");
1472
1473 U_BOOT_CMD(diskboot, 3, 1, do_diskboot,
1474 "boot from IDE device", "loadAddr dev:part");
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