2 * (C) Copyright 2000-2011
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * SPDX-License-Identifier: GPL-2.0+
17 #include <asm/byteorder.h>
20 #if defined(CONFIG_IDE_8xx_DIRECT) || defined(CONFIG_IDE_PCMCIA)
27 #ifdef CONFIG_STATUS_LED
28 # include <status_led.h>
32 # define EIEIO __asm__ volatile ("eieio")
33 # define SYNC __asm__ volatile ("sync")
35 # define EIEIO /* nothing */
36 # define SYNC /* nothing */
39 /* ------------------------------------------------------------------------- */
41 /* Current I/O Device */
42 static int curr_device = -1;
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,
49 #if defined(CONFIG_SYS_ATA_IDE1_OFFSET) && (CONFIG_SYS_IDE_MAXBUS > 1)
50 CONFIG_SYS_ATA_IDE1_OFFSET,
54 static int ide_bus_ok[CONFIG_SYS_IDE_MAXBUS];
56 block_dev_desc_t ide_dev_desc[CONFIG_SYS_IDE_MAXDEVICE];
57 /* ------------------------------------------------------------------------- */
59 #ifdef CONFIG_IDE_RESET
60 static void ide_reset (void);
62 #define ide_reset() /* dummy */
65 static void ide_ident (block_dev_desc_t *dev_desc);
66 static uchar ide_wait (int dev, ulong t);
68 #define IDE_TIME_OUT 2000 /* 2 sec timeout */
70 #define ATAPI_TIME_OUT 7000 /* 7 sec timeout (5 sec seems to work...) */
72 #define IDE_SPIN_UP_TIME_OUT 5000 /* 5 sec spin-up timeout */
74 static void ident_cpy (unsigned char *dest, unsigned char *src, unsigned int len);
76 #ifndef CONFIG_SYS_ATA_PORT_ADDR
77 #define CONFIG_SYS_ATA_PORT_ADDR(port) (port)
81 static void atapi_inquiry(block_dev_desc_t *dev_desc);
82 static ulong atapi_read(int device, lbaint_t blknr, lbaint_t blkcnt,
87 /* ------------------------------------------------------------------------- */
89 int do_ide(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
98 if (strncmp(argv[1], "res", 3) == 0) {
100 #ifdef CONFIG_IDE_8xx_DIRECT
101 " on PCMCIA " PCMCIA_SLOT_MSG
107 } else if (strncmp(argv[1], "inf", 3) == 0) {
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]);
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");
126 printf("\nIDE device %d: ", curr_device);
127 dev_print(&ide_dev_desc[curr_device]);
129 } else if (strncmp(argv[1], "part", 4) == 0) {
132 for (ok = 0, dev = 0;
133 dev < CONFIG_SYS_IDE_MAXDEVICE;
135 if (ide_dev_desc[dev].part_type !=
140 print_part(&ide_dev_desc[dev]);
144 puts("\nno IDE devices available\n");
149 return CMD_RET_USAGE;
151 if (strncmp(argv[1], "dev", 3) == 0) {
152 int dev = (int) simple_strtoul(argv[2], NULL, 10);
154 printf("\nIDE device %d: ", dev);
155 if (dev >= CONFIG_SYS_IDE_MAXDEVICE) {
156 puts("unknown device\n");
159 dev_print(&ide_dev_desc[dev]);
160 /*ide_print (dev); */
162 if (ide_dev_desc[dev].type == DEV_TYPE_UNKNOWN)
167 puts("... is now current device\n");
170 } else if (strncmp(argv[1], "part", 4) == 0) {
171 int dev = (int) simple_strtoul(argv[2], NULL, 10);
173 if (ide_dev_desc[dev].part_type != PART_TYPE_UNKNOWN) {
174 print_part(&ide_dev_desc[dev]);
176 printf("\nIDE device %d not available\n",
183 return CMD_RET_USAGE;
185 /* at least 4 args */
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);
192 #ifdef CONFIG_SYS_64BIT_LBA
193 lbaint_t blk = simple_strtoull(argv[3], NULL, 16);
195 printf("\nIDE read: device %d block # %lld, count %ld ... ",
196 curr_device, blk, cnt);
198 lbaint_t blk = simple_strtoul(argv[3], NULL, 16);
200 printf("\nIDE read: device %d block # %ld, count %ld ... ",
201 curr_device, blk, cnt);
204 n = ide_dev_desc[curr_device].block_read(curr_device,
207 /* flush cache after read */
209 cnt * ide_dev_desc[curr_device].blksz);
211 printf("%ld blocks read: %s\n",
212 n, (n == cnt) ? "OK" : "ERROR");
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);
222 #ifdef CONFIG_SYS_64BIT_LBA
223 lbaint_t blk = simple_strtoull(argv[3], NULL, 16);
225 printf("\nIDE write: device %d block # %lld, count %ld ... ",
226 curr_device, blk, cnt);
228 lbaint_t blk = simple_strtoul(argv[3], NULL, 16);
230 printf("\nIDE write: device %d block # %ld, count %ld ... ",
231 curr_device, blk, cnt);
233 n = ide_write(curr_device, blk, cnt, (ulong *) addr);
235 printf("%ld blocks written: %s\n",
236 n, (n == cnt) ? "OK" : "ERROR");
242 return CMD_RET_USAGE;
249 int do_diskboot(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
251 return common_diskboot(cmdtp, "ide", argc, argv);
254 /* ------------------------------------------------------------------------- */
256 __weak void ide_led(uchar led, uchar status)
258 #if defined(CONFIG_IDE_LED) && defined(PER8_BASE) /* required by LED_PORT */
259 static uchar led_buffer; /* Buffer for current LED status */
261 uchar *led_port = LED_PORT;
263 if (status) /* switch LED on */
265 else /* switch LED off */
268 *led_port = led_buffer;
272 #ifndef CONFIG_IDE_LED /* define LED macros, they are not used anyways */
273 # define DEVICE_LED(x) 0
278 /* ------------------------------------------------------------------------- */
280 __weak void ide_outb(int dev, int port, unsigned char val)
282 debug("ide_outb (dev= %d, port= 0x%x, val= 0x%02x) : @ 0x%08lx\n",
284 (ATA_CURR_BASE(dev) + CONFIG_SYS_ATA_PORT_ADDR(port)));
286 #if defined(CONFIG_IDE_AHB)
289 ide_write_register(dev, port, val);
292 outb(val, (ATA_CURR_BASE(dev)));
295 outb(val, (ATA_CURR_BASE(dev) + CONFIG_SYS_ATA_PORT_ADDR(port)));
299 __weak unsigned char ide_inb(int dev, int port)
303 #if defined(CONFIG_IDE_AHB)
304 val = ide_read_register(dev, port);
306 val = inb((ATA_CURR_BASE(dev) + CONFIG_SYS_ATA_PORT_ADDR(port)));
309 debug("ide_inb (dev= %d, port= 0x%x) : @ 0x%08lx -> 0x%02x\n",
311 (ATA_CURR_BASE(dev) + CONFIG_SYS_ATA_PORT_ADDR(port)), val);
320 #ifdef CONFIG_IDE_8xx_PCCARD
321 extern int ide_devices_found; /* Initialized in check_ide_device() */
322 #endif /* CONFIG_IDE_8xx_PCCARD */
324 #ifdef CONFIG_IDE_PREINIT
328 puts("ide_preinit failed\n");
331 #endif /* CONFIG_IDE_PREINIT */
336 * Reset the IDE just to be sure.
337 * Light LED's to show
339 ide_led((LED_IDE1 | LED_IDE2), 1); /* LED's on */
341 /* ATAPI Drives seems to need a proper IDE Reset */
344 #ifdef CONFIG_IDE_INIT_POSTRESET
347 if (ide_init_postreset()) {
348 puts("ide_preinit_postreset failed\n");
351 #endif /* CONFIG_IDE_INIT_POSTRESET */
354 * Wait for IDE to get ready.
355 * According to spec, this can take up to 31 seconds!
357 for (bus = 0; bus < CONFIG_SYS_IDE_MAXBUS; ++bus) {
359 bus * (CONFIG_SYS_IDE_MAXDEVICE /
360 CONFIG_SYS_IDE_MAXBUS);
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 */
369 printf("Bus %d: ", bus);
375 udelay(100000); /* 100 ms */
376 ide_outb(dev, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(dev));
377 udelay(100000); /* 100 ms */
380 udelay(10000); /* 10 ms */
382 c = ide_inb(dev, ATA_STATUS);
384 if (i > (ATA_RESET_TIME * 100)) {
385 puts("** Timeout **\n");
387 ide_led((LED_IDE1 | LED_IDE2), 0);
390 if ((i >= 100) && ((i % 100) == 0))
393 } while (c & ATA_STAT_BUSY);
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);
412 ide_led((LED_IDE1 | LED_IDE2), 0); /* LED's off */
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)])
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]);
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]);
444 /* ------------------------------------------------------------------------- */
446 #ifdef CONFIG_PARTITIONS
447 block_dev_desc_t *ide_get_dev(int dev)
449 return (dev < CONFIG_SYS_IDE_MAXDEVICE) ? &ide_dev_desc[dev] : NULL;
453 /* ------------------------------------------------------------------------- */
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)
459 ide_input_data(dev, sect_buf, words);
462 __weak void ide_input_swap_data(int dev, ulong *sect_buf, int words)
464 volatile ushort *pbuf =
465 (ushort *) (ATA_CURR_BASE(dev) + ATA_DATA_REG);
466 ushort *dbuf = (ushort *) sect_buf;
468 debug("in input swap data base for read is %lx\n",
469 (unsigned long) pbuf);
473 *dbuf++ = swab16p((u16 *) pbuf);
474 *dbuf++ = swab16p((u16 *) pbuf);
476 *dbuf++ = ld_le16(pbuf);
477 *dbuf++ = ld_le16(pbuf);
481 #endif /* __LITTLE_ENDIAN */
484 #if defined(CONFIG_IDE_SWAP_IO)
485 __weak void ide_output_data(int dev, const ulong *sect_buf, int words)
488 volatile ushort *pbuf;
490 pbuf = (ushort *) (ATA_CURR_BASE(dev) + ATA_DATA_REG);
491 dbuf = (ushort *) sect_buf;
499 #else /* ! CONFIG_IDE_SWAP_IO */
500 __weak void ide_output_data(int dev, const ulong *sect_buf, int words)
502 #if defined(CONFIG_IDE_AHB)
503 ide_write_data(dev, sect_buf, words);
505 outsw(ATA_CURR_BASE(dev) + ATA_DATA_REG, sect_buf, words << 1);
508 #endif /* CONFIG_IDE_SWAP_IO */
510 #if defined(CONFIG_IDE_SWAP_IO)
511 __weak void ide_input_data(int dev, ulong *sect_buf, int words)
514 volatile ushort *pbuf;
516 pbuf = (ushort *) (ATA_CURR_BASE(dev) + ATA_DATA_REG);
517 dbuf = (ushort *) sect_buf;
519 debug("in input data base for read is %lx\n", (unsigned long) pbuf);
528 #else /* ! CONFIG_IDE_SWAP_IO */
529 __weak void ide_input_data(int dev, ulong *sect_buf, int words)
531 #if defined(CONFIG_IDE_AHB)
532 ide_read_data(dev, sect_buf, words);
534 insw(ATA_CURR_BASE(dev) + ATA_DATA_REG, sect_buf, words << 1);
538 #endif /* CONFIG_IDE_SWAP_IO */
540 /* -------------------------------------------------------------------------
542 static void ide_ident(block_dev_desc_t *dev_desc)
552 device = dev_desc->dev;
553 printf(" Device %d: ", device);
555 ide_led(DEVICE_LED(device), 1); /* LED on */
558 ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
559 dev_desc->if_type = IF_TYPE_IDE;
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;
574 * Start Ident Command
576 ide_outb(device, ATA_COMMAND, ATAPI_CMD_IDENT);
578 * Wait for completion - ATAPI devices need more time
581 c = ide_wait(device, ATAPI_TIME_OUT);
586 * Start Ident Command
588 ide_outb(device, ATA_COMMAND, ATA_CMD_IDENT);
591 * Wait for completion
593 c = ide_wait(device, IDE_TIME_OUT);
595 ide_led(DEVICE_LED(device), 0); /* LED off */
597 if (((c & ATA_STAT_DRQ) == 0) ||
598 ((c & (ATA_STAT_FAULT | ATA_STAT_ERR)) != 0)) {
602 * Need to soft reset the device
603 * in case it's an ATAPI...
605 debug("Retrying...\n");
606 ide_outb(device, ATA_DEV_HD,
607 ATA_LBA | ATA_DEVICE(device));
609 ide_outb(device, ATA_COMMAND, 0x08);
610 udelay(500000); /* 500 ms */
615 ide_outb(device, ATA_DEV_HD,
616 ATA_LBA | ATA_DEVICE(device));
625 } /* see above - ugly to read */
627 if (retries == 2) /* Not found */
631 ide_input_swap_data(device, (ulong *)&iop, ATA_SECTORWORDS);
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
641 * firmware revision, model, and serial number have Big Endian Byte
642 * order in Word. Convert all three to little endian.
644 * See CF+ and CompactFlash Specification Revision 2.0:
645 * 6.2.1.6: Identify Drive, Table 39 for more details
648 strswab(dev_desc->revision);
649 strswab(dev_desc->vendor);
650 strswab(dev_desc->product);
651 #endif /* __LITTLE_ENDIAN */
653 if ((iop.config & 0x0080) == 0x0080)
654 dev_desc->removable = 1;
656 dev_desc->removable = 0;
659 if (dev_desc->if_type == IF_TYPE_ATAPI) {
660 atapi_inquiry(dev_desc);
663 #endif /* CONFIG_ATAPI */
667 dev_desc->lba = (iop.lba_capacity << 16) | (iop.lba_capacity >> 16);
668 #else /* ! __BIG_ENDIAN */
670 * do not swap shorts on little endian
672 * See CF+ and CompactFlash Specification Revision 2.0:
673 * 6.2.1.6: Identfy Drive, Table 39, Word Address 57-58 for details.
675 dev_desc->lba = iop.lba_capacity;
676 #endif /* __BIG_ENDIAN */
679 if (iop.command_set_2 & 0x0400) { /* LBA 48 support */
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);
688 #endif /* CONFIG_LBA48 */
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... */
695 #if 0 /* only used to test the powersaving mode,
696 * if enabled, the drive goes after 5 sec
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);
707 c = ide_wait(device, IDE_TIME_OUT); /* can't take over 500 ms */
712 /* ------------------------------------------------------------------------- */
714 ulong ide_read(int device, lbaint_t blknr, lbaint_t blkcnt, void *buffer)
718 unsigned char pwrsave = 0; /* power save */
721 unsigned char lba48 = 0;
723 if (blknr & 0x0000fffff0000000ULL) {
724 /* more than 28 bits used, use 48bit mode */
728 debug("ide_read dev %d start " LBAF ", blocks " LBAF " buffer at %lX\n",
729 device, blknr, blkcnt, (ulong) buffer);
731 ide_led(DEVICE_LED(device), 1); /* LED on */
735 ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
736 c = ide_wait(device, IDE_TIME_OUT);
738 if (c & ATA_STAT_BUSY) {
739 printf("IDE read: device %d not ready\n", device);
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);
748 c = ide_wait(device, IDE_TIME_OUT); /* can't take over 500 ms */
750 if (c & ATA_STAT_BUSY) {
751 printf("IDE read: device %d not ready\n", device);
754 if ((c & ATA_STAT_ERR) == ATA_STAT_ERR) {
755 printf("No Powersaving mode %X\n", c);
757 c = ide_inb(device, ATA_SECT_CNT);
758 debug("Powersaving %02X\n", c);
764 while (blkcnt-- > 0) {
766 c = ide_wait(device, IDE_TIME_OUT);
768 if (c & ATA_STAT_BUSY) {
769 printf("IDE read: device %d not ready\n", device);
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);
781 ide_outb(device, ATA_LBA_MID, 0);
782 ide_outb(device, ATA_LBA_HIGH, 0);
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);
793 ide_outb(device, ATA_DEV_HD,
794 ATA_LBA | ATA_DEVICE(device));
795 ide_outb(device, ATA_COMMAND, ATA_CMD_READ_EXT);
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);
808 /* may take up to 4 sec */
809 c = ide_wait(device, IDE_SPIN_UP_TIME_OUT);
812 /* can't take over 500 ms */
813 c = ide_wait(device, IDE_TIME_OUT);
816 if ((c & (ATA_STAT_DRQ | ATA_STAT_BUSY | ATA_STAT_ERR)) !=
818 printf("Error (no IRQ) dev %d blk " LBAF ": status "
819 "%#02x\n", device, blknr, c);
823 ide_input_data(device, buffer, ATA_SECTORWORDS);
824 (void) ide_inb(device, ATA_STATUS); /* clear IRQ */
828 buffer += ATA_BLOCKSIZE;
831 ide_led(DEVICE_LED(device), 0); /* LED off */
835 /* ------------------------------------------------------------------------- */
838 ulong ide_write(int device, lbaint_t blknr, lbaint_t blkcnt, const void *buffer)
844 unsigned char lba48 = 0;
846 if (blknr & 0x0000fffff0000000ULL) {
847 /* more than 28 bits used, use 48bit mode */
852 ide_led(DEVICE_LED(device), 1); /* LED on */
856 ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
858 while (blkcnt-- > 0) {
860 c = ide_wait(device, IDE_TIME_OUT);
862 if (c & ATA_STAT_BUSY) {
863 printf("IDE read: device %d not ready\n", device);
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);
875 ide_outb(device, ATA_LBA_MID, 0);
876 ide_outb(device, ATA_LBA_HIGH, 0);
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);
887 ide_outb(device, ATA_DEV_HD,
888 ATA_LBA | ATA_DEVICE(device));
889 ide_outb(device, ATA_COMMAND, ATA_CMD_WRITE_EXT);
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);
901 /* can't take over 500 ms */
902 c = ide_wait(device, IDE_TIME_OUT);
904 if ((c & (ATA_STAT_DRQ | ATA_STAT_BUSY | ATA_STAT_ERR)) !=
906 printf("Error (no IRQ) dev %d blk " LBAF ": status "
907 "%#02x\n", device, blknr, c);
911 ide_output_data(device, buffer, ATA_SECTORWORDS);
912 c = ide_inb(device, ATA_STATUS); /* clear IRQ */
915 buffer += ATA_BLOCKSIZE;
918 ide_led(DEVICE_LED(device), 0); /* LED off */
922 /* ------------------------------------------------------------------------- */
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'
929 static void ident_cpy(unsigned char *dst, unsigned char *src,
932 unsigned char *end, *last;
937 /* reserve space for '\0' */
941 /* skip leading white space */
942 while ((*src) && (src < end) && (*src == ' '))
945 /* copy string, omitting trailing white space */
946 while ((*src) && (src < end)) {
955 /* ------------------------------------------------------------------------- */
958 * Wait until Busy bit is off, or timeout (in ms)
961 static uchar ide_wait(int dev, ulong t)
963 ulong delay = 10 * t; /* poll every 100 us */
966 while ((c = ide_inb(dev, ATA_STATUS)) & ATA_STAT_BUSY) {
974 /* ------------------------------------------------------------------------- */
976 #ifdef CONFIG_IDE_RESET
977 extern void ide_set_reset(int idereset);
979 static void ide_reset(void)
984 for (i = 0; i < CONFIG_SYS_IDE_MAXBUS; ++i)
986 for (i = 0; i < CONFIG_SYS_IDE_MAXDEVICE; ++i)
987 ide_dev_desc[i].type = DEV_TYPE_UNKNOWN;
989 ide_set_reset(1); /* assert reset */
991 /* the reset signal shall be asserted for et least 25 us */
996 /* de-assert RESET signal */
1000 for (i = 0; i < 250; ++i)
1004 #endif /* CONFIG_IDE_RESET */
1006 /* ------------------------------------------------------------------------- */
1008 #if defined(CONFIG_OF_IDE_FIXUP)
1009 int ide_device_present(int dev)
1011 if (dev >= CONFIG_SYS_IDE_MAXBUS)
1013 return (ide_dev_desc[dev].type == DEV_TYPE_UNKNOWN ? 0 : 1);
1016 /* ------------------------------------------------------------------------- */
1019 /****************************************************************************
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)
1029 volatile ushort *pbuf;
1031 pbuf = (ushort *) (ATA_CURR_BASE(dev) + ATA_DATA_REG);
1032 dbuf = (ushort *) sect_buf;
1034 debug("in output data shorts base for read is %lx\n",
1035 (unsigned long) pbuf);
1043 __weak void ide_input_data_shorts(int dev, ushort *sect_buf, int shorts)
1046 volatile ushort *pbuf;
1048 pbuf = (ushort *) (ATA_CURR_BASE(dev) + ATA_DATA_REG);
1049 dbuf = (ushort *) sect_buf;
1051 debug("in input data shorts base for read is %lx\n",
1052 (unsigned long) pbuf);
1060 #else /* ! CONFIG_IDE_SWAP_IO */
1061 __weak void ide_output_data_shorts(int dev, ushort *sect_buf, int shorts)
1063 outsw(ATA_CURR_BASE(dev) + ATA_DATA_REG, sect_buf, shorts);
1066 __weak void ide_input_data_shorts(int dev, ushort *sect_buf, int shorts)
1068 insw(ATA_CURR_BASE(dev) + ATA_DATA_REG, sect_buf, shorts);
1071 #endif /* CONFIG_IDE_SWAP_IO */
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
1079 static uchar atapi_wait_mask(int dev, ulong t, uchar mask, uchar res)
1081 ulong delay = 10 * t; /* poll every 100 us */
1084 /* prevents to read the status before valid */
1085 c = ide_inb(dev, ATA_DEV_CTL);
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)
1099 * issue an atapi command
1101 unsigned char atapi_issue(int device, unsigned char *ccb, int ccblen,
1102 unsigned char *buffer, int buflen)
1104 unsigned char c, err, mask, res;
1107 ide_led(DEVICE_LED(device), 1); /* LED on */
1111 mask = ATA_STAT_BUSY | ATA_STAT_DRQ;
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,
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));
1130 ide_outb(device, ATA_COMMAND, ATAPI_CMD_PACKET);
1133 mask = ATA_STAT_DRQ | ATA_STAT_BUSY | ATA_STAT_ERR;
1135 c = atapi_wait_mask(device, ATAPI_TIME_OUT, mask, res);
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",
1144 /* write command block */
1145 ide_output_data_shorts(device, (unsigned short *) ccb, ccblen / 2);
1147 /* ATAPI Command written wait for completition */
1148 udelay(5000); /* device must set bsy */
1150 mask = ATA_STAT_DRQ | ATA_STAT_BUSY | ATA_STAT_ERR;
1152 * if no data wait for DRQ = 0 BSY = 0
1153 * if data wait for DRQ = 1 BSY = 0
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",
1165 printf("ATAPI_ISSUE: (no DRQ) after sending ccb (%x) status 0x%02x\n",
1171 n = ide_inb(device, ATA_CYL_HIGH);
1173 n += ide_inb(device, ATA_CYL_LOW);
1175 printf("ERROR, transfer bytes %d requested only %d\n", n,
1180 if ((n == 0) && (buflen < 0)) {
1181 printf("ERROR, transfer bytes %d requested %d\n", n, buflen);
1186 debug("WARNING, transfer bytes %d not equal with requested %d\n",
1189 if (n != 0) { /* data transfer */
1190 debug("ATAPI_ISSUE: %d Bytes to transfer\n", n);
1191 /* we transfer shorts */
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);
1199 debug("Read from device @ %p shorts %d\n", buffer, n);
1200 ide_input_data_shorts(device,
1201 (unsigned short *) buffer, n);
1204 udelay(5000); /* seems that some CD ROMs need this... */
1205 mask = ATA_STAT_BUSY | ATA_STAT_ERR;
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,
1216 ide_led(DEVICE_LED(device), 0); /* LED off */
1221 * sending the command to atapi_issue. If an status other than good
1222 * returns, an request_sense will be issued
1225 #define ATAPI_DRIVE_NOT_READY 100
1226 #define ATAPI_UNIT_ATTN 10
1228 unsigned char atapi_issue_autoreq(int device,
1231 unsigned char *buffer, int buflen)
1233 unsigned char sense_data[18], sense_ccb[12];
1234 unsigned char res, key, asc, ascq;
1235 int notready, unitattn;
1237 unitattn = ATAPI_UNIT_ATTN;
1238 notready = ATAPI_DRIVE_NOT_READY;
1241 res = atapi_issue(device, ccb, ccblen, buffer, buflen);
1246 return 0xFF; /* error */
1248 debug("(auto_req)atapi_issue returned sense key %X\n", res);
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 */
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]);
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);
1265 return 0; /* ok device ready */
1267 if ((key == 6) || (asc == 0x29) || (asc == 0x28)) { /* Unit Attention */
1268 if (unitattn-- > 0) {
1272 printf("Unit Attention, tried %d\n", ATAPI_UNIT_ATTN);
1275 if ((asc == 0x4) && (ascq == 0x1)) {
1276 /* not ready, but will be ready soon */
1277 if (notready-- > 0) {
1281 printf("Drive not ready, tried %d times\n",
1282 ATAPI_DRIVE_NOT_READY);
1286 debug("Media not present\n");
1290 printf("ERROR: Unknown Sense key %02X ASC %02X ASCQ %02X\n", key, asc,
1293 debug("ERROR Sense key %02X ASC %02X ASCQ %02X\n", key, asc, ascq);
1298 static void atapi_inquiry(block_dev_desc_t *dev_desc)
1300 unsigned char ccb[12]; /* Command descriptor block */
1301 unsigned char iobuf[64]; /* temp buf */
1305 device = dev_desc->dev;
1306 dev_desc->type = DEV_TYPE_UNKNOWN; /* not yet valid */
1307 dev_desc->block_read = atapi_read;
1309 memset(ccb, 0, sizeof(ccb));
1310 memset(iobuf, 0, sizeof(iobuf));
1312 ccb[0] = ATAPI_CMD_INQUIRY;
1313 ccb[4] = 40; /* allocation Legnth */
1314 c = atapi_issue_autoreq(device, ccb, 12, (unsigned char *) iobuf, 40);
1316 debug("ATAPI_CMD_INQUIRY returned %x\n", c);
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);
1327 dev_desc->blksz = 0;
1328 dev_desc->log2blksz = LOG2_INVALID(typeof(dev_desc->log2blksz));
1329 dev_desc->type = iobuf[0] & 0x1f;
1331 if ((iobuf[1] & 0x80) == 0x80)
1332 dev_desc->removable = 1;
1334 dev_desc->removable = 0;
1336 memset(ccb, 0, sizeof(ccb));
1337 memset(iobuf, 0, sizeof(iobuf));
1338 ccb[0] = ATAPI_CMD_START_STOP;
1339 ccb[4] = 0x03; /* start */
1341 c = atapi_issue_autoreq(device, ccb, 12, (unsigned char *) iobuf, 0);
1343 debug("ATAPI_CMD_START_STOP returned %x\n", c);
1347 memset(ccb, 0, sizeof(ccb));
1348 memset(iobuf, 0, sizeof(iobuf));
1349 c = atapi_issue_autoreq(device, ccb, 12, (unsigned char *) iobuf, 0);
1351 debug("ATAPI_CMD_UNIT_TEST_READY returned %x\n", c);
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);
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]);
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);
1375 /* ATAPI devices cannot use 48bit addressing (ATA/ATAPI v7) */
1376 dev_desc->lba48 = 0;
1384 * we transfer only one block per command, since the multiple DRQ per
1385 * command is not yet implemented
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)
1391 ulong atapi_read(int device, lbaint_t blknr, lbaint_t blkcnt, void *buffer)
1394 unsigned char ccb[12]; /* Command descriptor block */
1397 debug("atapi_read dev %d start " LBAF " blocks " LBAF " buffer at %lX\n",
1398 device, blknr, blkcnt, (ulong) buffer);
1401 if (blkcnt > ATAPI_READ_MAX_BLOCK)
1402 cnt = ATAPI_READ_MAX_BLOCK;
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 */
1419 if (atapi_issue_autoreq(device, ccb, 12,
1420 (unsigned char *) buffer,
1421 cnt * ATAPI_READ_BLOCK_SIZE)
1428 buffer += (cnt * ATAPI_READ_BLOCK_SIZE);
1429 } while (blkcnt > 0);
1433 /* ------------------------------------------------------------------------- */
1435 #endif /* CONFIG_ATAPI */
1437 U_BOOT_CMD(ide, 5, 1, do_ide,
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'");
1448 U_BOOT_CMD(diskboot, 3, 1, do_diskboot,
1449 "boot from IDE device", "loadAddr dev:part");