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arc: introduce U-Boot port for ARCv2 ISA
[people/ms/u-boot.git] / common / cmd_ide.c
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 __weak 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 #ifndef CONFIG_IDE_LED /* define LED macros, they are not used anyways */
273 # define DEVICE_LED(x) 0
274 # define LED_IDE1 1
275 # define LED_IDE2 2
276 #endif
277
278 /* ------------------------------------------------------------------------- */
279
280 __weak void ide_outb(int dev, int port, unsigned char val)
281 {
282 debug("ide_outb (dev= %d, port= 0x%x, val= 0x%02x) : @ 0x%08lx\n",
283 dev, port, val,
284 (ATA_CURR_BASE(dev) + CONFIG_SYS_ATA_PORT_ADDR(port)));
285
286 #if defined(CONFIG_IDE_AHB)
287 if (port) {
288 /* write command */
289 ide_write_register(dev, port, val);
290 } else {
291 /* write data */
292 outb(val, (ATA_CURR_BASE(dev)));
293 }
294 #else
295 outb(val, (ATA_CURR_BASE(dev) + CONFIG_SYS_ATA_PORT_ADDR(port)));
296 #endif
297 }
298
299 __weak unsigned char ide_inb(int dev, int port)
300 {
301 uchar val;
302
303 #if defined(CONFIG_IDE_AHB)
304 val = ide_read_register(dev, port);
305 #else
306 val = inb((ATA_CURR_BASE(dev) + CONFIG_SYS_ATA_PORT_ADDR(port)));
307 #endif
308
309 debug("ide_inb (dev= %d, port= 0x%x) : @ 0x%08lx -> 0x%02x\n",
310 dev, port,
311 (ATA_CURR_BASE(dev) + CONFIG_SYS_ATA_PORT_ADDR(port)), val);
312 return val;
313 }
314
315 void ide_init(void)
316 {
317 unsigned char c;
318 int i, bus;
319
320 #ifdef CONFIG_IDE_8xx_PCCARD
321 extern int ide_devices_found; /* Initialized in check_ide_device() */
322 #endif /* CONFIG_IDE_8xx_PCCARD */
323
324 #ifdef CONFIG_IDE_PREINIT
325 WATCHDOG_RESET();
326
327 if (ide_preinit()) {
328 puts("ide_preinit failed\n");
329 return;
330 }
331 #endif /* CONFIG_IDE_PREINIT */
332
333 WATCHDOG_RESET();
334
335 /*
336 * Reset the IDE just to be sure.
337 * Light LED's to show
338 */
339 ide_led((LED_IDE1 | LED_IDE2), 1); /* LED's on */
340
341 /* ATAPI Drives seems to need a proper IDE Reset */
342 ide_reset();
343
344 #ifdef CONFIG_IDE_INIT_POSTRESET
345 WATCHDOG_RESET();
346
347 if (ide_init_postreset()) {
348 puts("ide_preinit_postreset failed\n");
349 return;
350 }
351 #endif /* CONFIG_IDE_INIT_POSTRESET */
352
353 /*
354 * Wait for IDE to get ready.
355 * According to spec, this can take up to 31 seconds!
356 */
357 for (bus = 0; bus < CONFIG_SYS_IDE_MAXBUS; ++bus) {
358 int dev =
359 bus * (CONFIG_SYS_IDE_MAXDEVICE /
360 CONFIG_SYS_IDE_MAXBUS);
361
362 #ifdef CONFIG_IDE_8xx_PCCARD
363 /* Skip non-ide devices from probing */
364 if ((ide_devices_found & (1 << bus)) == 0) {
365 ide_led((LED_IDE1 | LED_IDE2), 0); /* LED's off */
366 continue;
367 }
368 #endif
369 printf("Bus %d: ", bus);
370
371 ide_bus_ok[bus] = 0;
372
373 /* Select device
374 */
375 udelay(100000); /* 100 ms */
376 ide_outb(dev, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(dev));
377 udelay(100000); /* 100 ms */
378 i = 0;
379 do {
380 udelay(10000); /* 10 ms */
381
382 c = ide_inb(dev, ATA_STATUS);
383 i++;
384 if (i > (ATA_RESET_TIME * 100)) {
385 puts("** Timeout **\n");
386 /* LED's off */
387 ide_led((LED_IDE1 | LED_IDE2), 0);
388 return;
389 }
390 if ((i >= 100) && ((i % 100) == 0))
391 putc('.');
392
393 } while (c & ATA_STAT_BUSY);
394
395 if (c & (ATA_STAT_BUSY | ATA_STAT_FAULT)) {
396 puts("not available ");
397 debug("Status = 0x%02X ", c);
398 #ifndef CONFIG_ATAPI /* ATAPI Devices do not set DRDY */
399 } else if ((c & ATA_STAT_READY) == 0) {
400 puts("not available ");
401 debug("Status = 0x%02X ", c);
402 #endif
403 } else {
404 puts("OK ");
405 ide_bus_ok[bus] = 1;
406 }
407 WATCHDOG_RESET();
408 }
409
410 putc('\n');
411
412 ide_led((LED_IDE1 | LED_IDE2), 0); /* LED's off */
413
414 curr_device = -1;
415 for (i = 0; i < CONFIG_SYS_IDE_MAXDEVICE; ++i) {
416 int led = (IDE_BUS(i) == 0) ? LED_IDE1 : LED_IDE2;
417 ide_dev_desc[i].type = DEV_TYPE_UNKNOWN;
418 ide_dev_desc[i].if_type = IF_TYPE_IDE;
419 ide_dev_desc[i].dev = i;
420 ide_dev_desc[i].part_type = PART_TYPE_UNKNOWN;
421 ide_dev_desc[i].blksz = 0;
422 ide_dev_desc[i].log2blksz =
423 LOG2_INVALID(typeof(ide_dev_desc[i].log2blksz));
424 ide_dev_desc[i].lba = 0;
425 ide_dev_desc[i].block_read = ide_read;
426 ide_dev_desc[i].block_write = ide_write;
427 if (!ide_bus_ok[IDE_BUS(i)])
428 continue;
429 ide_led(led, 1); /* LED on */
430 ide_ident(&ide_dev_desc[i]);
431 ide_led(led, 0); /* LED off */
432 dev_print(&ide_dev_desc[i]);
433
434 if ((ide_dev_desc[i].lba > 0) && (ide_dev_desc[i].blksz > 0)) {
435 /* initialize partition type */
436 init_part(&ide_dev_desc[i]);
437 if (curr_device < 0)
438 curr_device = i;
439 }
440 }
441 WATCHDOG_RESET();
442 }
443
444 /* ------------------------------------------------------------------------- */
445
446 #ifdef CONFIG_PARTITIONS
447 block_dev_desc_t *ide_get_dev(int dev)
448 {
449 return (dev < CONFIG_SYS_IDE_MAXDEVICE) ? &ide_dev_desc[dev] : NULL;
450 }
451 #endif
452
453 /* ------------------------------------------------------------------------- */
454
455 /* We only need to swap data if we are running on a big endian cpu. */
456 #if defined(__LITTLE_ENDIAN)
457 __weak void ide_input_swap_data(int dev, ulong *sect_buf, int words)
458 {
459 ide_input_data(dev, sect_buf, words);
460 }
461 #else
462 __weak void ide_input_swap_data(int dev, ulong *sect_buf, int words)
463 {
464 volatile ushort *pbuf =
465 (ushort *) (ATA_CURR_BASE(dev) + ATA_DATA_REG);
466 ushort *dbuf = (ushort *) sect_buf;
467
468 debug("in input swap data base for read is %lx\n",
469 (unsigned long) pbuf);
470
471 while (words--) {
472 #ifdef __MIPS__
473 *dbuf++ = swab16p((u16 *) pbuf);
474 *dbuf++ = swab16p((u16 *) pbuf);
475 #else
476 *dbuf++ = ld_le16(pbuf);
477 *dbuf++ = ld_le16(pbuf);
478 #endif /* !MIPS */
479 }
480 }
481 #endif /* __LITTLE_ENDIAN */
482
483
484 #if defined(CONFIG_IDE_SWAP_IO)
485 __weak void ide_output_data(int dev, const ulong *sect_buf, int words)
486 {
487 ushort *dbuf;
488 volatile ushort *pbuf;
489
490 pbuf = (ushort *) (ATA_CURR_BASE(dev) + ATA_DATA_REG);
491 dbuf = (ushort *) sect_buf;
492 while (words--) {
493 EIEIO;
494 *pbuf = *dbuf++;
495 EIEIO;
496 *pbuf = *dbuf++;
497 }
498 }
499 #else /* ! CONFIG_IDE_SWAP_IO */
500 __weak void ide_output_data(int dev, const ulong *sect_buf, int words)
501 {
502 #if defined(CONFIG_IDE_AHB)
503 ide_write_data(dev, sect_buf, words);
504 #else
505 outsw(ATA_CURR_BASE(dev) + ATA_DATA_REG, sect_buf, words << 1);
506 #endif
507 }
508 #endif /* CONFIG_IDE_SWAP_IO */
509
510 #if defined(CONFIG_IDE_SWAP_IO)
511 __weak void ide_input_data(int dev, ulong *sect_buf, int words)
512 {
513 ushort *dbuf;
514 volatile ushort *pbuf;
515
516 pbuf = (ushort *) (ATA_CURR_BASE(dev) + ATA_DATA_REG);
517 dbuf = (ushort *) sect_buf;
518
519 debug("in input data base for read is %lx\n", (unsigned long) pbuf);
520
521 while (words--) {
522 EIEIO;
523 *dbuf++ = *pbuf;
524 EIEIO;
525 *dbuf++ = *pbuf;
526 }
527 }
528 #else /* ! CONFIG_IDE_SWAP_IO */
529 __weak void ide_input_data(int dev, ulong *sect_buf, int words)
530 {
531 #if defined(CONFIG_IDE_AHB)
532 ide_read_data(dev, sect_buf, words);
533 #else
534 insw(ATA_CURR_BASE(dev) + ATA_DATA_REG, sect_buf, words << 1);
535 #endif
536 }
537
538 #endif /* CONFIG_IDE_SWAP_IO */
539
540 /* -------------------------------------------------------------------------
541 */
542 static void ide_ident(block_dev_desc_t *dev_desc)
543 {
544 unsigned char c;
545 hd_driveid_t iop;
546
547 #ifdef CONFIG_ATAPI
548 int retries = 0;
549 #endif
550 int device;
551
552 device = dev_desc->dev;
553 printf(" Device %d: ", device);
554
555 ide_led(DEVICE_LED(device), 1); /* LED on */
556 /* Select device
557 */
558 ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
559 dev_desc->if_type = IF_TYPE_IDE;
560 #ifdef CONFIG_ATAPI
561
562 retries = 0;
563
564 /* Warning: This will be tricky to read */
565 while (retries <= 1) {
566 /* check signature */
567 if ((ide_inb(device, ATA_SECT_CNT) == 0x01) &&
568 (ide_inb(device, ATA_SECT_NUM) == 0x01) &&
569 (ide_inb(device, ATA_CYL_LOW) == 0x14) &&
570 (ide_inb(device, ATA_CYL_HIGH) == 0xEB)) {
571 /* ATAPI Signature found */
572 dev_desc->if_type = IF_TYPE_ATAPI;
573 /*
574 * Start Ident Command
575 */
576 ide_outb(device, ATA_COMMAND, ATAPI_CMD_IDENT);
577 /*
578 * Wait for completion - ATAPI devices need more time
579 * to become ready
580 */
581 c = ide_wait(device, ATAPI_TIME_OUT);
582 } else
583 #endif
584 {
585 /*
586 * Start Ident Command
587 */
588 ide_outb(device, ATA_COMMAND, ATA_CMD_IDENT);
589
590 /*
591 * Wait for completion
592 */
593 c = ide_wait(device, IDE_TIME_OUT);
594 }
595 ide_led(DEVICE_LED(device), 0); /* LED off */
596
597 if (((c & ATA_STAT_DRQ) == 0) ||
598 ((c & (ATA_STAT_FAULT | ATA_STAT_ERR)) != 0)) {
599 #ifdef CONFIG_ATAPI
600 {
601 /*
602 * Need to soft reset the device
603 * in case it's an ATAPI...
604 */
605 debug("Retrying...\n");
606 ide_outb(device, ATA_DEV_HD,
607 ATA_LBA | ATA_DEVICE(device));
608 udelay(100000);
609 ide_outb(device, ATA_COMMAND, 0x08);
610 udelay(500000); /* 500 ms */
611 }
612 /*
613 * Select device
614 */
615 ide_outb(device, ATA_DEV_HD,
616 ATA_LBA | ATA_DEVICE(device));
617 retries++;
618 #else
619 return;
620 #endif
621 }
622 #ifdef CONFIG_ATAPI
623 else
624 break;
625 } /* see above - ugly to read */
626
627 if (retries == 2) /* Not found */
628 return;
629 #endif
630
631 ide_input_swap_data(device, (ulong *)&iop, ATA_SECTORWORDS);
632
633 ident_cpy((unsigned char *) dev_desc->revision, iop.fw_rev,
634 sizeof(dev_desc->revision));
635 ident_cpy((unsigned char *) dev_desc->vendor, iop.model,
636 sizeof(dev_desc->vendor));
637 ident_cpy((unsigned char *) dev_desc->product, iop.serial_no,
638 sizeof(dev_desc->product));
639 #ifdef __LITTLE_ENDIAN
640 /*
641 * firmware revision, model, and serial number have Big Endian Byte
642 * order in Word. Convert all three to little endian.
643 *
644 * See CF+ and CompactFlash Specification Revision 2.0:
645 * 6.2.1.6: Identify Drive, Table 39 for more details
646 */
647
648 strswab(dev_desc->revision);
649 strswab(dev_desc->vendor);
650 strswab(dev_desc->product);
651 #endif /* __LITTLE_ENDIAN */
652
653 if ((iop.config & 0x0080) == 0x0080)
654 dev_desc->removable = 1;
655 else
656 dev_desc->removable = 0;
657
658 #ifdef CONFIG_ATAPI
659 if (dev_desc->if_type == IF_TYPE_ATAPI) {
660 atapi_inquiry(dev_desc);
661 return;
662 }
663 #endif /* CONFIG_ATAPI */
664
665 #ifdef __BIG_ENDIAN
666 /* swap shorts */
667 dev_desc->lba = (iop.lba_capacity << 16) | (iop.lba_capacity >> 16);
668 #else /* ! __BIG_ENDIAN */
669 /*
670 * do not swap shorts on little endian
671 *
672 * See CF+ and CompactFlash Specification Revision 2.0:
673 * 6.2.1.6: Identfy Drive, Table 39, Word Address 57-58 for details.
674 */
675 dev_desc->lba = iop.lba_capacity;
676 #endif /* __BIG_ENDIAN */
677
678 #ifdef CONFIG_LBA48
679 if (iop.command_set_2 & 0x0400) { /* LBA 48 support */
680 dev_desc->lba48 = 1;
681 dev_desc->lba = (unsigned long long) iop.lba48_capacity[0] |
682 ((unsigned long long) iop.lba48_capacity[1] << 16) |
683 ((unsigned long long) iop.lba48_capacity[2] << 32) |
684 ((unsigned long long) iop.lba48_capacity[3] << 48);
685 } else {
686 dev_desc->lba48 = 0;
687 }
688 #endif /* CONFIG_LBA48 */
689 /* assuming HD */
690 dev_desc->type = DEV_TYPE_HARDDISK;
691 dev_desc->blksz = ATA_BLOCKSIZE;
692 dev_desc->log2blksz = LOG2(dev_desc->blksz);
693 dev_desc->lun = 0; /* just to fill something in... */
694
695 #if 0 /* only used to test the powersaving mode,
696 * if enabled, the drive goes after 5 sec
697 * in standby mode */
698 ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
699 c = ide_wait(device, IDE_TIME_OUT);
700 ide_outb(device, ATA_SECT_CNT, 1);
701 ide_outb(device, ATA_LBA_LOW, 0);
702 ide_outb(device, ATA_LBA_MID, 0);
703 ide_outb(device, ATA_LBA_HIGH, 0);
704 ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
705 ide_outb(device, ATA_COMMAND, 0xe3);
706 udelay(50);
707 c = ide_wait(device, IDE_TIME_OUT); /* can't take over 500 ms */
708 #endif
709 }
710
711
712 /* ------------------------------------------------------------------------- */
713
714 ulong ide_read(int device, lbaint_t blknr, lbaint_t blkcnt, void *buffer)
715 {
716 ulong n = 0;
717 unsigned char c;
718 unsigned char pwrsave = 0; /* power save */
719
720 #ifdef CONFIG_LBA48
721 unsigned char lba48 = 0;
722
723 if (blknr & 0x0000fffff0000000ULL) {
724 /* more than 28 bits used, use 48bit mode */
725 lba48 = 1;
726 }
727 #endif
728 debug("ide_read dev %d start " LBAF ", blocks " LBAF " buffer at %lX\n",
729 device, blknr, blkcnt, (ulong) buffer);
730
731 ide_led(DEVICE_LED(device), 1); /* LED on */
732
733 /* Select device
734 */
735 ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
736 c = ide_wait(device, IDE_TIME_OUT);
737
738 if (c & ATA_STAT_BUSY) {
739 printf("IDE read: device %d not ready\n", device);
740 goto IDE_READ_E;
741 }
742
743 /* first check if the drive is in Powersaving mode, if yes,
744 * increase the timeout value */
745 ide_outb(device, ATA_COMMAND, ATA_CMD_CHK_PWR);
746 udelay(50);
747
748 c = ide_wait(device, IDE_TIME_OUT); /* can't take over 500 ms */
749
750 if (c & ATA_STAT_BUSY) {
751 printf("IDE read: device %d not ready\n", device);
752 goto IDE_READ_E;
753 }
754 if ((c & ATA_STAT_ERR) == ATA_STAT_ERR) {
755 printf("No Powersaving mode %X\n", c);
756 } else {
757 c = ide_inb(device, ATA_SECT_CNT);
758 debug("Powersaving %02X\n", c);
759 if (c == 0)
760 pwrsave = 1;
761 }
762
763
764 while (blkcnt-- > 0) {
765
766 c = ide_wait(device, IDE_TIME_OUT);
767
768 if (c & ATA_STAT_BUSY) {
769 printf("IDE read: device %d not ready\n", device);
770 break;
771 }
772 #ifdef CONFIG_LBA48
773 if (lba48) {
774 /* write high bits */
775 ide_outb(device, ATA_SECT_CNT, 0);
776 ide_outb(device, ATA_LBA_LOW, (blknr >> 24) & 0xFF);
777 #ifdef CONFIG_SYS_64BIT_LBA
778 ide_outb(device, ATA_LBA_MID, (blknr >> 32) & 0xFF);
779 ide_outb(device, ATA_LBA_HIGH, (blknr >> 40) & 0xFF);
780 #else
781 ide_outb(device, ATA_LBA_MID, 0);
782 ide_outb(device, ATA_LBA_HIGH, 0);
783 #endif
784 }
785 #endif
786 ide_outb(device, ATA_SECT_CNT, 1);
787 ide_outb(device, ATA_LBA_LOW, (blknr >> 0) & 0xFF);
788 ide_outb(device, ATA_LBA_MID, (blknr >> 8) & 0xFF);
789 ide_outb(device, ATA_LBA_HIGH, (blknr >> 16) & 0xFF);
790
791 #ifdef CONFIG_LBA48
792 if (lba48) {
793 ide_outb(device, ATA_DEV_HD,
794 ATA_LBA | ATA_DEVICE(device));
795 ide_outb(device, ATA_COMMAND, ATA_CMD_READ_EXT);
796
797 } else
798 #endif
799 {
800 ide_outb(device, ATA_DEV_HD, ATA_LBA |
801 ATA_DEVICE(device) | ((blknr >> 24) & 0xF));
802 ide_outb(device, ATA_COMMAND, ATA_CMD_READ);
803 }
804
805 udelay(50);
806
807 if (pwrsave) {
808 /* may take up to 4 sec */
809 c = ide_wait(device, IDE_SPIN_UP_TIME_OUT);
810 pwrsave = 0;
811 } else {
812 /* can't take over 500 ms */
813 c = ide_wait(device, IDE_TIME_OUT);
814 }
815
816 if ((c & (ATA_STAT_DRQ | ATA_STAT_BUSY | ATA_STAT_ERR)) !=
817 ATA_STAT_DRQ) {
818 printf("Error (no IRQ) dev %d blk " LBAF ": status "
819 "%#02x\n", device, blknr, c);
820 break;
821 }
822
823 ide_input_data(device, buffer, ATA_SECTORWORDS);
824 (void) ide_inb(device, ATA_STATUS); /* clear IRQ */
825
826 ++n;
827 ++blknr;
828 buffer += ATA_BLOCKSIZE;
829 }
830 IDE_READ_E:
831 ide_led(DEVICE_LED(device), 0); /* LED off */
832 return (n);
833 }
834
835 /* ------------------------------------------------------------------------- */
836
837
838 ulong ide_write(int device, lbaint_t blknr, lbaint_t blkcnt, const void *buffer)
839 {
840 ulong n = 0;
841 unsigned char c;
842
843 #ifdef CONFIG_LBA48
844 unsigned char lba48 = 0;
845
846 if (blknr & 0x0000fffff0000000ULL) {
847 /* more than 28 bits used, use 48bit mode */
848 lba48 = 1;
849 }
850 #endif
851
852 ide_led(DEVICE_LED(device), 1); /* LED on */
853
854 /* Select device
855 */
856 ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
857
858 while (blkcnt-- > 0) {
859
860 c = ide_wait(device, IDE_TIME_OUT);
861
862 if (c & ATA_STAT_BUSY) {
863 printf("IDE read: device %d not ready\n", device);
864 goto WR_OUT;
865 }
866 #ifdef CONFIG_LBA48
867 if (lba48) {
868 /* write high bits */
869 ide_outb(device, ATA_SECT_CNT, 0);
870 ide_outb(device, ATA_LBA_LOW, (blknr >> 24) & 0xFF);
871 #ifdef CONFIG_SYS_64BIT_LBA
872 ide_outb(device, ATA_LBA_MID, (blknr >> 32) & 0xFF);
873 ide_outb(device, ATA_LBA_HIGH, (blknr >> 40) & 0xFF);
874 #else
875 ide_outb(device, ATA_LBA_MID, 0);
876 ide_outb(device, ATA_LBA_HIGH, 0);
877 #endif
878 }
879 #endif
880 ide_outb(device, ATA_SECT_CNT, 1);
881 ide_outb(device, ATA_LBA_LOW, (blknr >> 0) & 0xFF);
882 ide_outb(device, ATA_LBA_MID, (blknr >> 8) & 0xFF);
883 ide_outb(device, ATA_LBA_HIGH, (blknr >> 16) & 0xFF);
884
885 #ifdef CONFIG_LBA48
886 if (lba48) {
887 ide_outb(device, ATA_DEV_HD,
888 ATA_LBA | ATA_DEVICE(device));
889 ide_outb(device, ATA_COMMAND, ATA_CMD_WRITE_EXT);
890
891 } else
892 #endif
893 {
894 ide_outb(device, ATA_DEV_HD, ATA_LBA |
895 ATA_DEVICE(device) | ((blknr >> 24) & 0xF));
896 ide_outb(device, ATA_COMMAND, ATA_CMD_WRITE);
897 }
898
899 udelay(50);
900
901 /* can't take over 500 ms */
902 c = ide_wait(device, IDE_TIME_OUT);
903
904 if ((c & (ATA_STAT_DRQ | ATA_STAT_BUSY | ATA_STAT_ERR)) !=
905 ATA_STAT_DRQ) {
906 printf("Error (no IRQ) dev %d blk " LBAF ": status "
907 "%#02x\n", device, blknr, c);
908 goto WR_OUT;
909 }
910
911 ide_output_data(device, buffer, ATA_SECTORWORDS);
912 c = ide_inb(device, ATA_STATUS); /* clear IRQ */
913 ++n;
914 ++blknr;
915 buffer += ATA_BLOCKSIZE;
916 }
917 WR_OUT:
918 ide_led(DEVICE_LED(device), 0); /* LED off */
919 return (n);
920 }
921
922 /* ------------------------------------------------------------------------- */
923
924 /*
925 * copy src to dest, skipping leading and trailing blanks and null
926 * terminate the string
927 * "len" is the size of available memory including the terminating '\0'
928 */
929 static void ident_cpy(unsigned char *dst, unsigned char *src,
930 unsigned int len)
931 {
932 unsigned char *end, *last;
933
934 last = dst;
935 end = src + len - 1;
936
937 /* reserve space for '\0' */
938 if (len < 2)
939 goto OUT;
940
941 /* skip leading white space */
942 while ((*src) && (src < end) && (*src == ' '))
943 ++src;
944
945 /* copy string, omitting trailing white space */
946 while ((*src) && (src < end)) {
947 *dst++ = *src;
948 if (*src++ != ' ')
949 last = dst;
950 }
951 OUT:
952 *last = '\0';
953 }
954
955 /* ------------------------------------------------------------------------- */
956
957 /*
958 * Wait until Busy bit is off, or timeout (in ms)
959 * Return last status
960 */
961 static uchar ide_wait(int dev, ulong t)
962 {
963 ulong delay = 10 * t; /* poll every 100 us */
964 uchar c;
965
966 while ((c = ide_inb(dev, ATA_STATUS)) & ATA_STAT_BUSY) {
967 udelay(100);
968 if (delay-- == 0)
969 break;
970 }
971 return (c);
972 }
973
974 /* ------------------------------------------------------------------------- */
975
976 #ifdef CONFIG_IDE_RESET
977 extern void ide_set_reset(int idereset);
978
979 static void ide_reset(void)
980 {
981 int i;
982
983 curr_device = -1;
984 for (i = 0; i < CONFIG_SYS_IDE_MAXBUS; ++i)
985 ide_bus_ok[i] = 0;
986 for (i = 0; i < CONFIG_SYS_IDE_MAXDEVICE; ++i)
987 ide_dev_desc[i].type = DEV_TYPE_UNKNOWN;
988
989 ide_set_reset(1); /* assert reset */
990
991 /* the reset signal shall be asserted for et least 25 us */
992 udelay(25);
993
994 WATCHDOG_RESET();
995
996 /* de-assert RESET signal */
997 ide_set_reset(0);
998
999 /* wait 250 ms */
1000 for (i = 0; i < 250; ++i)
1001 udelay(1000);
1002 }
1003
1004 #endif /* CONFIG_IDE_RESET */
1005
1006 /* ------------------------------------------------------------------------- */
1007
1008 #if defined(CONFIG_OF_IDE_FIXUP)
1009 int ide_device_present(int dev)
1010 {
1011 if (dev >= CONFIG_SYS_IDE_MAXBUS)
1012 return 0;
1013 return (ide_dev_desc[dev].type == DEV_TYPE_UNKNOWN ? 0 : 1);
1014 }
1015 #endif
1016 /* ------------------------------------------------------------------------- */
1017
1018 #ifdef CONFIG_ATAPI
1019 /****************************************************************************
1020 * ATAPI Support
1021 */
1022
1023 #if defined(CONFIG_IDE_SWAP_IO)
1024 /* since ATAPI may use commands with not 4 bytes alligned length
1025 * we have our own transfer functions, 2 bytes alligned */
1026 __weak void ide_output_data_shorts(int dev, ushort *sect_buf, int shorts)
1027 {
1028 ushort *dbuf;
1029 volatile ushort *pbuf;
1030
1031 pbuf = (ushort *) (ATA_CURR_BASE(dev) + ATA_DATA_REG);
1032 dbuf = (ushort *) sect_buf;
1033
1034 debug("in output data shorts base for read is %lx\n",
1035 (unsigned long) pbuf);
1036
1037 while (shorts--) {
1038 EIEIO;
1039 *pbuf = *dbuf++;
1040 }
1041 }
1042
1043 __weak void ide_input_data_shorts(int dev, ushort *sect_buf, int shorts)
1044 {
1045 ushort *dbuf;
1046 volatile ushort *pbuf;
1047
1048 pbuf = (ushort *) (ATA_CURR_BASE(dev) + ATA_DATA_REG);
1049 dbuf = (ushort *) sect_buf;
1050
1051 debug("in input data shorts base for read is %lx\n",
1052 (unsigned long) pbuf);
1053
1054 while (shorts--) {
1055 EIEIO;
1056 *dbuf++ = *pbuf;
1057 }
1058 }
1059
1060 #else /* ! CONFIG_IDE_SWAP_IO */
1061 __weak void ide_output_data_shorts(int dev, ushort *sect_buf, int shorts)
1062 {
1063 outsw(ATA_CURR_BASE(dev) + ATA_DATA_REG, sect_buf, shorts);
1064 }
1065
1066 __weak void ide_input_data_shorts(int dev, ushort *sect_buf, int shorts)
1067 {
1068 insw(ATA_CURR_BASE(dev) + ATA_DATA_REG, sect_buf, shorts);
1069 }
1070
1071 #endif /* CONFIG_IDE_SWAP_IO */
1072
1073 /*
1074 * Wait until (Status & mask) == res, or timeout (in ms)
1075 * Return last status
1076 * This is used since some ATAPI CD ROMs clears their Busy Bit first
1077 * and then they set their DRQ Bit
1078 */
1079 static uchar atapi_wait_mask(int dev, ulong t, uchar mask, uchar res)
1080 {
1081 ulong delay = 10 * t; /* poll every 100 us */
1082 uchar c;
1083
1084 /* prevents to read the status before valid */
1085 c = ide_inb(dev, ATA_DEV_CTL);
1086
1087 while (((c = ide_inb(dev, ATA_STATUS)) & mask) != res) {
1088 /* break if error occurs (doesn't make sense to wait more) */
1089 if ((c & ATA_STAT_ERR) == ATA_STAT_ERR)
1090 break;
1091 udelay(100);
1092 if (delay-- == 0)
1093 break;
1094 }
1095 return (c);
1096 }
1097
1098 /*
1099 * issue an atapi command
1100 */
1101 unsigned char atapi_issue(int device, unsigned char *ccb, int ccblen,
1102 unsigned char *buffer, int buflen)
1103 {
1104 unsigned char c, err, mask, res;
1105 int n;
1106
1107 ide_led(DEVICE_LED(device), 1); /* LED on */
1108
1109 /* Select device
1110 */
1111 mask = ATA_STAT_BUSY | ATA_STAT_DRQ;
1112 res = 0;
1113 ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
1114 c = atapi_wait_mask(device, ATAPI_TIME_OUT, mask, res);
1115 if ((c & mask) != res) {
1116 printf("ATAPI_ISSUE: device %d not ready status %X\n", device,
1117 c);
1118 err = 0xFF;
1119 goto AI_OUT;
1120 }
1121 /* write taskfile */
1122 ide_outb(device, ATA_ERROR_REG, 0); /* no DMA, no overlaped */
1123 ide_outb(device, ATA_SECT_CNT, 0);
1124 ide_outb(device, ATA_SECT_NUM, 0);
1125 ide_outb(device, ATA_CYL_LOW, (unsigned char) (buflen & 0xFF));
1126 ide_outb(device, ATA_CYL_HIGH,
1127 (unsigned char) ((buflen >> 8) & 0xFF));
1128 ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
1129
1130 ide_outb(device, ATA_COMMAND, ATAPI_CMD_PACKET);
1131 udelay(50);
1132
1133 mask = ATA_STAT_DRQ | ATA_STAT_BUSY | ATA_STAT_ERR;
1134 res = ATA_STAT_DRQ;
1135 c = atapi_wait_mask(device, ATAPI_TIME_OUT, mask, res);
1136
1137 if ((c & mask) != res) { /* DRQ must be 1, BSY 0 */
1138 printf("ATAPI_ISSUE: Error (no IRQ) before sending ccb dev %d status 0x%02x\n",
1139 device, c);
1140 err = 0xFF;
1141 goto AI_OUT;
1142 }
1143
1144 /* write command block */
1145 ide_output_data_shorts(device, (unsigned short *) ccb, ccblen / 2);
1146
1147 /* ATAPI Command written wait for completition */
1148 udelay(5000); /* device must set bsy */
1149
1150 mask = ATA_STAT_DRQ | ATA_STAT_BUSY | ATA_STAT_ERR;
1151 /*
1152 * if no data wait for DRQ = 0 BSY = 0
1153 * if data wait for DRQ = 1 BSY = 0
1154 */
1155 res = 0;
1156 if (buflen)
1157 res = ATA_STAT_DRQ;
1158 c = atapi_wait_mask(device, ATAPI_TIME_OUT, mask, res);
1159 if ((c & mask) != res) {
1160 if (c & ATA_STAT_ERR) {
1161 err = (ide_inb(device, ATA_ERROR_REG)) >> 4;
1162 debug("atapi_issue 1 returned sense key %X status %02X\n",
1163 err, c);
1164 } else {
1165 printf("ATAPI_ISSUE: (no DRQ) after sending ccb (%x) status 0x%02x\n",
1166 ccb[0], c);
1167 err = 0xFF;
1168 }
1169 goto AI_OUT;
1170 }
1171 n = ide_inb(device, ATA_CYL_HIGH);
1172 n <<= 8;
1173 n += ide_inb(device, ATA_CYL_LOW);
1174 if (n > buflen) {
1175 printf("ERROR, transfer bytes %d requested only %d\n", n,
1176 buflen);
1177 err = 0xff;
1178 goto AI_OUT;
1179 }
1180 if ((n == 0) && (buflen < 0)) {
1181 printf("ERROR, transfer bytes %d requested %d\n", n, buflen);
1182 err = 0xff;
1183 goto AI_OUT;
1184 }
1185 if (n != buflen) {
1186 debug("WARNING, transfer bytes %d not equal with requested %d\n",
1187 n, buflen);
1188 }
1189 if (n != 0) { /* data transfer */
1190 debug("ATAPI_ISSUE: %d Bytes to transfer\n", n);
1191 /* we transfer shorts */
1192 n >>= 1;
1193 /* ok now decide if it is an in or output */
1194 if ((ide_inb(device, ATA_SECT_CNT) & 0x02) == 0) {
1195 debug("Write to device\n");
1196 ide_output_data_shorts(device,
1197 (unsigned short *) buffer, n);
1198 } else {
1199 debug("Read from device @ %p shorts %d\n", buffer, n);
1200 ide_input_data_shorts(device,
1201 (unsigned short *) buffer, n);
1202 }
1203 }
1204 udelay(5000); /* seems that some CD ROMs need this... */
1205 mask = ATA_STAT_BUSY | ATA_STAT_ERR;
1206 res = 0;
1207 c = atapi_wait_mask(device, ATAPI_TIME_OUT, mask, res);
1208 if ((c & ATA_STAT_ERR) == ATA_STAT_ERR) {
1209 err = (ide_inb(device, ATA_ERROR_REG) >> 4);
1210 debug("atapi_issue 2 returned sense key %X status %X\n", err,
1211 c);
1212 } else {
1213 err = 0;
1214 }
1215 AI_OUT:
1216 ide_led(DEVICE_LED(device), 0); /* LED off */
1217 return (err);
1218 }
1219
1220 /*
1221 * sending the command to atapi_issue. If an status other than good
1222 * returns, an request_sense will be issued
1223 */
1224
1225 #define ATAPI_DRIVE_NOT_READY 100
1226 #define ATAPI_UNIT_ATTN 10
1227
1228 unsigned char atapi_issue_autoreq(int device,
1229 unsigned char *ccb,
1230 int ccblen,
1231 unsigned char *buffer, int buflen)
1232 {
1233 unsigned char sense_data[18], sense_ccb[12];
1234 unsigned char res, key, asc, ascq;
1235 int notready, unitattn;
1236
1237 unitattn = ATAPI_UNIT_ATTN;
1238 notready = ATAPI_DRIVE_NOT_READY;
1239
1240 retry:
1241 res = atapi_issue(device, ccb, ccblen, buffer, buflen);
1242 if (res == 0)
1243 return 0; /* Ok */
1244
1245 if (res == 0xFF)
1246 return 0xFF; /* error */
1247
1248 debug("(auto_req)atapi_issue returned sense key %X\n", res);
1249
1250 memset(sense_ccb, 0, sizeof(sense_ccb));
1251 memset(sense_data, 0, sizeof(sense_data));
1252 sense_ccb[0] = ATAPI_CMD_REQ_SENSE;
1253 sense_ccb[4] = 18; /* allocation Length */
1254
1255 res = atapi_issue(device, sense_ccb, 12, sense_data, 18);
1256 key = (sense_data[2] & 0xF);
1257 asc = (sense_data[12]);
1258 ascq = (sense_data[13]);
1259
1260 debug("ATAPI_CMD_REQ_SENSE returned %x\n", res);
1261 debug(" Sense page: %02X key %02X ASC %02X ASCQ %02X\n",
1262 sense_data[0], key, asc, ascq);
1263
1264 if ((key == 0))
1265 return 0; /* ok device ready */
1266
1267 if ((key == 6) || (asc == 0x29) || (asc == 0x28)) { /* Unit Attention */
1268 if (unitattn-- > 0) {
1269 udelay(200 * 1000);
1270 goto retry;
1271 }
1272 printf("Unit Attention, tried %d\n", ATAPI_UNIT_ATTN);
1273 goto error;
1274 }
1275 if ((asc == 0x4) && (ascq == 0x1)) {
1276 /* not ready, but will be ready soon */
1277 if (notready-- > 0) {
1278 udelay(200 * 1000);
1279 goto retry;
1280 }
1281 printf("Drive not ready, tried %d times\n",
1282 ATAPI_DRIVE_NOT_READY);
1283 goto error;
1284 }
1285 if (asc == 0x3a) {
1286 debug("Media not present\n");
1287 goto error;
1288 }
1289
1290 printf("ERROR: Unknown Sense key %02X ASC %02X ASCQ %02X\n", key, asc,
1291 ascq);
1292 error:
1293 debug("ERROR Sense key %02X ASC %02X ASCQ %02X\n", key, asc, ascq);
1294 return (0xFF);
1295 }
1296
1297
1298 static void atapi_inquiry(block_dev_desc_t *dev_desc)
1299 {
1300 unsigned char ccb[12]; /* Command descriptor block */
1301 unsigned char iobuf[64]; /* temp buf */
1302 unsigned char c;
1303 int device;
1304
1305 device = dev_desc->dev;
1306 dev_desc->type = DEV_TYPE_UNKNOWN; /* not yet valid */
1307 dev_desc->block_read = atapi_read;
1308
1309 memset(ccb, 0, sizeof(ccb));
1310 memset(iobuf, 0, sizeof(iobuf));
1311
1312 ccb[0] = ATAPI_CMD_INQUIRY;
1313 ccb[4] = 40; /* allocation Legnth */
1314 c = atapi_issue_autoreq(device, ccb, 12, (unsigned char *) iobuf, 40);
1315
1316 debug("ATAPI_CMD_INQUIRY returned %x\n", c);
1317 if (c != 0)
1318 return;
1319
1320 /* copy device ident strings */
1321 ident_cpy((unsigned char *) dev_desc->vendor, &iobuf[8], 8);
1322 ident_cpy((unsigned char *) dev_desc->product, &iobuf[16], 16);
1323 ident_cpy((unsigned char *) dev_desc->revision, &iobuf[32], 5);
1324
1325 dev_desc->lun = 0;
1326 dev_desc->lba = 0;
1327 dev_desc->blksz = 0;
1328 dev_desc->log2blksz = LOG2_INVALID(typeof(dev_desc->log2blksz));
1329 dev_desc->type = iobuf[0] & 0x1f;
1330
1331 if ((iobuf[1] & 0x80) == 0x80)
1332 dev_desc->removable = 1;
1333 else
1334 dev_desc->removable = 0;
1335
1336 memset(ccb, 0, sizeof(ccb));
1337 memset(iobuf, 0, sizeof(iobuf));
1338 ccb[0] = ATAPI_CMD_START_STOP;
1339 ccb[4] = 0x03; /* start */
1340
1341 c = atapi_issue_autoreq(device, ccb, 12, (unsigned char *) iobuf, 0);
1342
1343 debug("ATAPI_CMD_START_STOP returned %x\n", c);
1344 if (c != 0)
1345 return;
1346
1347 memset(ccb, 0, sizeof(ccb));
1348 memset(iobuf, 0, sizeof(iobuf));
1349 c = atapi_issue_autoreq(device, ccb, 12, (unsigned char *) iobuf, 0);
1350
1351 debug("ATAPI_CMD_UNIT_TEST_READY returned %x\n", c);
1352 if (c != 0)
1353 return;
1354
1355 memset(ccb, 0, sizeof(ccb));
1356 memset(iobuf, 0, sizeof(iobuf));
1357 ccb[0] = ATAPI_CMD_READ_CAP;
1358 c = atapi_issue_autoreq(device, ccb, 12, (unsigned char *) iobuf, 8);
1359 debug("ATAPI_CMD_READ_CAP returned %x\n", c);
1360 if (c != 0)
1361 return;
1362
1363 debug("Read Cap: LBA %02X%02X%02X%02X blksize %02X%02X%02X%02X\n",
1364 iobuf[0], iobuf[1], iobuf[2], iobuf[3],
1365 iobuf[4], iobuf[5], iobuf[6], iobuf[7]);
1366
1367 dev_desc->lba = ((unsigned long) iobuf[0] << 24) +
1368 ((unsigned long) iobuf[1] << 16) +
1369 ((unsigned long) iobuf[2] << 8) + ((unsigned long) iobuf[3]);
1370 dev_desc->blksz = ((unsigned long) iobuf[4] << 24) +
1371 ((unsigned long) iobuf[5] << 16) +
1372 ((unsigned long) iobuf[6] << 8) + ((unsigned long) iobuf[7]);
1373 dev_desc->log2blksz = LOG2(dev_desc->blksz);
1374 #ifdef CONFIG_LBA48
1375 /* ATAPI devices cannot use 48bit addressing (ATA/ATAPI v7) */
1376 dev_desc->lba48 = 0;
1377 #endif
1378 return;
1379 }
1380
1381
1382 /*
1383 * atapi_read:
1384 * we transfer only one block per command, since the multiple DRQ per
1385 * command is not yet implemented
1386 */
1387 #define ATAPI_READ_MAX_BYTES 2048 /* we read max 2kbytes */
1388 #define ATAPI_READ_BLOCK_SIZE 2048 /* assuming CD part */
1389 #define ATAPI_READ_MAX_BLOCK (ATAPI_READ_MAX_BYTES/ATAPI_READ_BLOCK_SIZE)
1390
1391 ulong atapi_read(int device, ulong blknr, lbaint_t blkcnt, void *buffer)
1392 {
1393 ulong n = 0;
1394 unsigned char ccb[12]; /* Command descriptor block */
1395 ulong cnt;
1396
1397 debug("atapi_read dev %d start %lX, blocks " LBAF " buffer at %lX\n",
1398 device, blknr, blkcnt, (ulong) buffer);
1399
1400 do {
1401 if (blkcnt > ATAPI_READ_MAX_BLOCK)
1402 cnt = ATAPI_READ_MAX_BLOCK;
1403 else
1404 cnt = blkcnt;
1405
1406 ccb[0] = ATAPI_CMD_READ_12;
1407 ccb[1] = 0; /* reserved */
1408 ccb[2] = (unsigned char) (blknr >> 24) & 0xFF; /* MSB Block */
1409 ccb[3] = (unsigned char) (blknr >> 16) & 0xFF; /* */
1410 ccb[4] = (unsigned char) (blknr >> 8) & 0xFF;
1411 ccb[5] = (unsigned char) blknr & 0xFF; /* LSB Block */
1412 ccb[6] = (unsigned char) (cnt >> 24) & 0xFF; /* MSB Block cnt */
1413 ccb[7] = (unsigned char) (cnt >> 16) & 0xFF;
1414 ccb[8] = (unsigned char) (cnt >> 8) & 0xFF;
1415 ccb[9] = (unsigned char) cnt & 0xFF; /* LSB Block */
1416 ccb[10] = 0; /* reserved */
1417 ccb[11] = 0; /* reserved */
1418
1419 if (atapi_issue_autoreq(device, ccb, 12,
1420 (unsigned char *) buffer,
1421 cnt * ATAPI_READ_BLOCK_SIZE)
1422 == 0xFF) {
1423 return (n);
1424 }
1425 n += cnt;
1426 blkcnt -= cnt;
1427 blknr += cnt;
1428 buffer += (cnt * ATAPI_READ_BLOCK_SIZE);
1429 } while (blkcnt > 0);
1430 return (n);
1431 }
1432
1433 /* ------------------------------------------------------------------------- */
1434
1435 #endif /* CONFIG_ATAPI */
1436
1437 U_BOOT_CMD(ide, 5, 1, do_ide,
1438 "IDE sub-system",
1439 "reset - reset IDE controller\n"
1440 "ide info - show available IDE devices\n"
1441 "ide device [dev] - show or set current device\n"
1442 "ide part [dev] - print partition table of one or all IDE devices\n"
1443 "ide read addr blk# cnt\n"
1444 "ide write addr blk# cnt - read/write `cnt'"
1445 " blocks starting at block `blk#'\n"
1446 " to/from memory address `addr'");
1447
1448 U_BOOT_CMD(diskboot, 3, 1, do_diskboot,
1449 "boot from IDE device", "loadAddr dev:part");
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