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