2 * (C) Copyright 2000-2011
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
34 #include <asm/byteorder.h>
37 #if defined(CONFIG_IDE_8xx_DIRECT) || defined(CONFIG_IDE_PCMCIA)
52 #ifdef CONFIG_STATUS_LED
53 # include <status_led.h>
57 # define EIEIO __asm__ volatile ("eieio")
58 # define SYNC __asm__ volatile ("sync")
60 # define EIEIO /* nothing */
61 # define SYNC /* nothing */
64 /* ------------------------------------------------------------------------- */
66 /* Current I/O Device */
67 static int curr_device = -1;
69 /* Current offset for IDE0 / IDE1 bus access */
70 ulong ide_bus_offset[CONFIG_SYS_IDE_MAXBUS] = {
71 #if defined(CONFIG_SYS_ATA_IDE0_OFFSET)
72 CONFIG_SYS_ATA_IDE0_OFFSET,
74 #if defined(CONFIG_SYS_ATA_IDE1_OFFSET) && (CONFIG_SYS_IDE_MAXBUS > 1)
75 CONFIG_SYS_ATA_IDE1_OFFSET,
79 static int ide_bus_ok[CONFIG_SYS_IDE_MAXBUS];
81 block_dev_desc_t ide_dev_desc[CONFIG_SYS_IDE_MAXDEVICE];
82 /* ------------------------------------------------------------------------- */
84 #ifdef CONFIG_IDE_RESET
85 static void ide_reset (void);
87 #define ide_reset() /* dummy */
90 static void ide_ident (block_dev_desc_t *dev_desc);
91 static uchar ide_wait (int dev, ulong t);
93 #define IDE_TIME_OUT 2000 /* 2 sec timeout */
95 #define ATAPI_TIME_OUT 7000 /* 7 sec timeout (5 sec seems to work...) */
97 #define IDE_SPIN_UP_TIME_OUT 5000 /* 5 sec spin-up timeout */
99 static void ident_cpy (unsigned char *dest, unsigned char *src, unsigned int len);
101 #ifndef CONFIG_SYS_ATA_PORT_ADDR
102 #define CONFIG_SYS_ATA_PORT_ADDR(port) (port)
106 static void atapi_inquiry(block_dev_desc_t *dev_desc);
107 ulong atapi_read (int device, lbaint_t blknr, ulong blkcnt, void *buffer);
111 /* ------------------------------------------------------------------------- */
113 int do_ide(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
120 return CMD_RET_USAGE;
122 if (strncmp(argv[1], "res", 3) == 0) {
124 #ifdef CONFIG_IDE_8xx_DIRECT
125 " on PCMCIA " PCMCIA_SLOT_MSG
131 } else if (strncmp(argv[1], "inf", 3) == 0) {
136 for (i = 0; i < CONFIG_SYS_IDE_MAXDEVICE; ++i) {
137 if (ide_dev_desc[i].type == DEV_TYPE_UNKNOWN)
138 continue; /* list only known devices */
139 printf("IDE device %d: ", i);
140 dev_print(&ide_dev_desc[i]);
144 } else if (strncmp(argv[1], "dev", 3) == 0) {
145 if ((curr_device < 0)
146 || (curr_device >= CONFIG_SYS_IDE_MAXDEVICE)) {
147 puts("\nno IDE devices available\n");
150 printf("\nIDE device %d: ", curr_device);
151 dev_print(&ide_dev_desc[curr_device]);
153 } else if (strncmp(argv[1], "part", 4) == 0) {
156 for (ok = 0, dev = 0;
157 dev < CONFIG_SYS_IDE_MAXDEVICE;
159 if (ide_dev_desc[dev].part_type !=
164 print_part(&ide_dev_desc[dev]);
168 puts("\nno IDE devices available\n");
173 return CMD_RET_USAGE;
175 if (strncmp(argv[1], "dev", 3) == 0) {
176 int dev = (int) simple_strtoul(argv[2], NULL, 10);
178 printf("\nIDE device %d: ", dev);
179 if (dev >= CONFIG_SYS_IDE_MAXDEVICE) {
180 puts("unknown device\n");
183 dev_print(&ide_dev_desc[dev]);
184 /*ide_print (dev); */
186 if (ide_dev_desc[dev].type == DEV_TYPE_UNKNOWN)
191 puts("... is now current device\n");
194 } else if (strncmp(argv[1], "part", 4) == 0) {
195 int dev = (int) simple_strtoul(argv[2], NULL, 10);
197 if (ide_dev_desc[dev].part_type != PART_TYPE_UNKNOWN) {
198 print_part(&ide_dev_desc[dev]);
200 printf("\nIDE device %d not available\n",
207 return CMD_RET_USAGE;
209 /* at least 4 args */
211 if (strcmp(argv[1], "read") == 0) {
212 ulong addr = simple_strtoul(argv[2], NULL, 16);
213 ulong cnt = simple_strtoul(argv[4], NULL, 16);
216 #ifdef CONFIG_SYS_64BIT_LBA
217 lbaint_t blk = simple_strtoull(argv[3], NULL, 16);
219 printf("\nIDE read: device %d block # %lld, count %ld ... ",
220 curr_device, blk, cnt);
222 lbaint_t blk = simple_strtoul(argv[3], NULL, 16);
224 printf("\nIDE read: device %d block # %ld, count %ld ... ",
225 curr_device, blk, cnt);
228 n = ide_dev_desc[curr_device].block_read(curr_device,
231 /* flush cache after read */
233 cnt * ide_dev_desc[curr_device].blksz);
235 printf("%ld blocks read: %s\n",
236 n, (n == cnt) ? "OK" : "ERROR");
241 } else if (strcmp(argv[1], "write") == 0) {
242 ulong addr = simple_strtoul(argv[2], NULL, 16);
243 ulong cnt = simple_strtoul(argv[4], NULL, 16);
246 #ifdef CONFIG_SYS_64BIT_LBA
247 lbaint_t blk = simple_strtoull(argv[3], NULL, 16);
249 printf("\nIDE write: device %d block # %lld, count %ld ... ",
250 curr_device, blk, cnt);
252 lbaint_t blk = simple_strtoul(argv[3], NULL, 16);
254 printf("\nIDE write: device %d block # %ld, count %ld ... ",
255 curr_device, blk, cnt);
257 n = ide_write(curr_device, blk, cnt, (ulong *) addr);
259 printf("%ld blocks written: %s\n",
260 n, (n == cnt) ? "OK" : "ERROR");
266 return CMD_RET_USAGE;
273 int do_diskboot(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
275 return common_diskboot(cmdtp, "ide", argc, argv);
278 /* ------------------------------------------------------------------------- */
280 void __ide_led(uchar led, uchar status)
282 #if defined(CONFIG_IDE_LED) && defined(PER8_BASE) /* required by LED_PORT */
283 static uchar led_buffer; /* Buffer for current LED status */
285 uchar *led_port = LED_PORT;
287 if (status) /* switch LED on */
289 else /* switch LED off */
292 *led_port = led_buffer;
296 void ide_led(uchar led, uchar status)
297 __attribute__ ((weak, alias("__ide_led")));
299 #ifndef CONFIG_IDE_LED /* define LED macros, they are not used anyways */
300 # define DEVICE_LED(x) 0
305 /* ------------------------------------------------------------------------- */
307 inline void __ide_outb(int dev, int port, unsigned char val)
309 debug("ide_outb (dev= %d, port= 0x%x, val= 0x%02x) : @ 0x%08lx\n",
311 (ATA_CURR_BASE(dev) + CONFIG_SYS_ATA_PORT_ADDR(port)));
313 #if defined(CONFIG_IDE_AHB)
316 ide_write_register(dev, port, val);
319 outb(val, (ATA_CURR_BASE(dev)));
322 outb(val, (ATA_CURR_BASE(dev) + CONFIG_SYS_ATA_PORT_ADDR(port)));
326 void ide_outb(int dev, int port, unsigned char val)
327 __attribute__ ((weak, alias("__ide_outb")));
329 inline unsigned char __ide_inb(int dev, int port)
333 #if defined(CONFIG_IDE_AHB)
334 val = ide_read_register(dev, port);
336 val = inb((ATA_CURR_BASE(dev) + CONFIG_SYS_ATA_PORT_ADDR(port)));
339 debug("ide_inb (dev= %d, port= 0x%x) : @ 0x%08lx -> 0x%02x\n",
341 (ATA_CURR_BASE(dev) + CONFIG_SYS_ATA_PORT_ADDR(port)), val);
345 unsigned char ide_inb(int dev, int port)
346 __attribute__ ((weak, alias("__ide_inb")));
348 #ifdef CONFIG_TUNE_PIO
349 inline int __ide_set_piomode(int pio_mode)
354 inline int ide_set_piomode(int pio_mode)
355 __attribute__ ((weak, alias("__ide_set_piomode")));
363 #ifdef CONFIG_IDE_8xx_PCCARD
364 extern int ide_devices_found; /* Initialized in check_ide_device() */
365 #endif /* CONFIG_IDE_8xx_PCCARD */
367 #ifdef CONFIG_IDE_PREINIT
371 puts("ide_preinit failed\n");
374 #endif /* CONFIG_IDE_PREINIT */
379 * Reset the IDE just to be sure.
380 * Light LED's to show
382 ide_led((LED_IDE1 | LED_IDE2), 1); /* LED's on */
384 /* ATAPI Drives seems to need a proper IDE Reset */
387 #ifdef CONFIG_IDE_INIT_POSTRESET
390 if (ide_init_postreset()) {
391 puts("ide_preinit_postreset failed\n");
394 #endif /* CONFIG_IDE_INIT_POSTRESET */
397 * Wait for IDE to get ready.
398 * According to spec, this can take up to 31 seconds!
400 for (bus = 0; bus < CONFIG_SYS_IDE_MAXBUS; ++bus) {
402 bus * (CONFIG_SYS_IDE_MAXDEVICE /
403 CONFIG_SYS_IDE_MAXBUS);
405 #ifdef CONFIG_IDE_8xx_PCCARD
406 /* Skip non-ide devices from probing */
407 if ((ide_devices_found & (1 << bus)) == 0) {
408 ide_led((LED_IDE1 | LED_IDE2), 0); /* LED's off */
412 printf("Bus %d: ", bus);
418 udelay(100000); /* 100 ms */
419 ide_outb(dev, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(dev));
420 udelay(100000); /* 100 ms */
423 udelay(10000); /* 10 ms */
425 c = ide_inb(dev, ATA_STATUS);
427 if (i > (ATA_RESET_TIME * 100)) {
428 puts("** Timeout **\n");
430 ide_led((LED_IDE1 | LED_IDE2), 0);
433 if ((i >= 100) && ((i % 100) == 0))
436 } while (c & ATA_STAT_BUSY);
438 if (c & (ATA_STAT_BUSY | ATA_STAT_FAULT)) {
439 puts("not available ");
440 debug("Status = 0x%02X ", c);
441 #ifndef CONFIG_ATAPI /* ATAPI Devices do not set DRDY */
442 } else if ((c & ATA_STAT_READY) == 0) {
443 puts("not available ");
444 debug("Status = 0x%02X ", c);
455 ide_led((LED_IDE1 | LED_IDE2), 0); /* LED's off */
458 for (i = 0; i < CONFIG_SYS_IDE_MAXDEVICE; ++i) {
459 int led = (IDE_BUS(i) == 0) ? LED_IDE1 : LED_IDE2;
460 ide_dev_desc[i].type = DEV_TYPE_UNKNOWN;
461 ide_dev_desc[i].if_type = IF_TYPE_IDE;
462 ide_dev_desc[i].dev = i;
463 ide_dev_desc[i].part_type = PART_TYPE_UNKNOWN;
464 ide_dev_desc[i].blksz = 0;
465 ide_dev_desc[i].lba = 0;
466 ide_dev_desc[i].block_read = ide_read;
467 ide_dev_desc[i].block_write = ide_write;
468 if (!ide_bus_ok[IDE_BUS(i)])
470 ide_led(led, 1); /* LED on */
471 ide_ident(&ide_dev_desc[i]);
472 ide_led(led, 0); /* LED off */
473 dev_print(&ide_dev_desc[i]);
475 if ((ide_dev_desc[i].lba > 0) && (ide_dev_desc[i].blksz > 0)) {
476 /* initialize partition type */
477 init_part(&ide_dev_desc[i]);
485 /* ------------------------------------------------------------------------- */
487 #ifdef CONFIG_PARTITIONS
488 block_dev_desc_t *ide_get_dev(int dev)
490 return (dev < CONFIG_SYS_IDE_MAXDEVICE) ? &ide_dev_desc[dev] : NULL;
494 /* ------------------------------------------------------------------------- */
496 void ide_input_swap_data(int dev, ulong *sect_buf, int words)
497 __attribute__ ((weak, alias("__ide_input_swap_data")));
499 void ide_input_data(int dev, ulong *sect_buf, int words)
500 __attribute__ ((weak, alias("__ide_input_data")));
502 void ide_output_data(int dev, const ulong *sect_buf, int words)
503 __attribute__ ((weak, alias("__ide_output_data")));
505 /* We only need to swap data if we are running on a big endian cpu. */
506 /* But Au1x00 cpu:s already swaps data in big endian mode! */
507 #if defined(__LITTLE_ENDIAN) || defined(CONFIG_SOC_AU1X00)
508 void __ide_input_swap_data(int dev, ulong *sect_buf, int words)
510 ide_input_data(dev, sect_buf, words);
513 void __ide_input_swap_data(int dev, ulong *sect_buf, int words)
515 volatile ushort *pbuf =
516 (ushort *) (ATA_CURR_BASE(dev) + ATA_DATA_REG);
517 ushort *dbuf = (ushort *) sect_buf;
519 debug("in input swap data base for read is %lx\n",
520 (unsigned long) pbuf);
524 *dbuf++ = swab16p((u16 *) pbuf);
525 *dbuf++ = swab16p((u16 *) pbuf);
526 #elif defined(CONFIG_PCS440EP)
530 *dbuf++ = ld_le16(pbuf);
531 *dbuf++ = ld_le16(pbuf);
535 #endif /* __LITTLE_ENDIAN || CONFIG_AU1X00 */
538 #if defined(CONFIG_IDE_SWAP_IO)
539 void __ide_output_data(int dev, const ulong *sect_buf, int words)
542 volatile ushort *pbuf;
544 pbuf = (ushort *) (ATA_CURR_BASE(dev) + ATA_DATA_REG);
545 dbuf = (ushort *) sect_buf;
547 #if defined(CONFIG_PCS440EP)
548 /* not tested, because CF was write protected */
550 *pbuf = ld_le16(dbuf++);
552 *pbuf = ld_le16(dbuf++);
561 #else /* ! CONFIG_IDE_SWAP_IO */
562 void __ide_output_data(int dev, const ulong *sect_buf, int words)
564 #if defined(CONFIG_IDE_AHB)
565 ide_write_data(dev, sect_buf, words);
567 outsw(ATA_CURR_BASE(dev) + ATA_DATA_REG, sect_buf, words << 1);
570 #endif /* CONFIG_IDE_SWAP_IO */
572 #if defined(CONFIG_IDE_SWAP_IO)
573 void __ide_input_data(int dev, ulong *sect_buf, int words)
576 volatile ushort *pbuf;
578 pbuf = (ushort *) (ATA_CURR_BASE(dev) + ATA_DATA_REG);
579 dbuf = (ushort *) sect_buf;
581 debug("in input data base for read is %lx\n", (unsigned long) pbuf);
584 #if defined(CONFIG_PCS440EP)
586 *dbuf++ = ld_le16(pbuf);
588 *dbuf++ = ld_le16(pbuf);
597 #else /* ! CONFIG_IDE_SWAP_IO */
598 void __ide_input_data(int dev, ulong *sect_buf, int words)
600 #if defined(CONFIG_IDE_AHB)
601 ide_read_data(dev, sect_buf, words);
603 insw(ATA_CURR_BASE(dev) + ATA_DATA_REG, sect_buf, words << 1);
607 #endif /* CONFIG_IDE_SWAP_IO */
609 /* -------------------------------------------------------------------------
611 static void ide_ident(block_dev_desc_t *dev_desc)
620 #ifdef CONFIG_TUNE_PIO
625 int mode, cycle_time;
629 device = dev_desc->dev;
630 printf(" Device %d: ", device);
632 ide_led(DEVICE_LED(device), 1); /* LED on */
635 ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
636 dev_desc->if_type = IF_TYPE_IDE;
641 /* Warning: This will be tricky to read */
642 while (retries <= 1) {
643 /* check signature */
644 if ((ide_inb(device, ATA_SECT_CNT) == 0x01) &&
645 (ide_inb(device, ATA_SECT_NUM) == 0x01) &&
646 (ide_inb(device, ATA_CYL_LOW) == 0x14) &&
647 (ide_inb(device, ATA_CYL_HIGH) == 0xEB)) {
648 /* ATAPI Signature found */
649 dev_desc->if_type = IF_TYPE_ATAPI;
651 * Start Ident Command
653 ide_outb(device, ATA_COMMAND, ATAPI_CMD_IDENT);
655 * Wait for completion - ATAPI devices need more time
658 c = ide_wait(device, ATAPI_TIME_OUT);
663 * Start Ident Command
665 ide_outb(device, ATA_COMMAND, ATA_CMD_IDENT);
668 * Wait for completion
670 c = ide_wait(device, IDE_TIME_OUT);
672 ide_led(DEVICE_LED(device), 0); /* LED off */
674 if (((c & ATA_STAT_DRQ) == 0) ||
675 ((c & (ATA_STAT_FAULT | ATA_STAT_ERR)) != 0)) {
679 * Need to soft reset the device
680 * in case it's an ATAPI...
682 debug("Retrying...\n");
683 ide_outb(device, ATA_DEV_HD,
684 ATA_LBA | ATA_DEVICE(device));
686 ide_outb(device, ATA_COMMAND, 0x08);
687 udelay(500000); /* 500 ms */
692 ide_outb(device, ATA_DEV_HD,
693 ATA_LBA | ATA_DEVICE(device));
702 } /* see above - ugly to read */
704 if (retries == 2) /* Not found */
708 ide_input_swap_data(device, (ulong *)&iop, ATA_SECTORWORDS);
710 ident_cpy((unsigned char *) dev_desc->revision, iop.fw_rev,
711 sizeof(dev_desc->revision));
712 ident_cpy((unsigned char *) dev_desc->vendor, iop.model,
713 sizeof(dev_desc->vendor));
714 ident_cpy((unsigned char *) dev_desc->product, iop.serial_no,
715 sizeof(dev_desc->product));
716 #ifdef __LITTLE_ENDIAN
718 * firmware revision, model, and serial number have Big Endian Byte
719 * order in Word. Convert all three to little endian.
721 * See CF+ and CompactFlash Specification Revision 2.0:
722 * 6.2.1.6: Identify Drive, Table 39 for more details
725 strswab(dev_desc->revision);
726 strswab(dev_desc->vendor);
727 strswab(dev_desc->product);
728 #endif /* __LITTLE_ENDIAN */
730 if ((iop.config & 0x0080) == 0x0080)
731 dev_desc->removable = 1;
733 dev_desc->removable = 0;
735 #ifdef CONFIG_TUNE_PIO
736 /* Mode 0 - 2 only, are directly determined by word 51. */
739 printf("WARNING: Invalid PIO (word 51 = %d).\n", pio_mode);
740 /* Force it to dead slow, and hope for the best... */
744 /* Any CompactFlash Storage Card that supports PIO mode 3 or above
745 * shall set bit 1 of word 53 to one and support the fields contained
746 * in words 64 through 70.
748 if (iop.field_valid & 0x02) {
750 * Mode 3 and above are possible. Check in order from slow
751 * to fast, so we wind up with the highest mode allowed.
753 if (iop.eide_pio_modes & 0x01)
755 if (iop.eide_pio_modes & 0x02)
757 if (ata_id_is_cfa((u16 *)&iop)) {
758 if ((iop.cf_advanced_caps & 0x07) == 0x01)
760 if ((iop.cf_advanced_caps & 0x07) == 0x02)
765 /* System-specific, depends on bus speeds, etc. */
766 ide_set_piomode(pio_mode);
767 #endif /* CONFIG_TUNE_PIO */
771 * Drive PIO mode autoselection
775 printf("tPIO = 0x%02x = %d\n", mode, mode);
776 if (mode > 2) { /* 2 is maximum allowed tPIO value */
778 debug("Override tPIO -> 2\n");
780 if (iop.field_valid & 2) { /* drive implements ATA2? */
781 debug("Drive implements ATA2\n");
782 if (iop.capability & 8) { /* drive supports use_iordy? */
783 cycle_time = iop.eide_pio_iordy;
785 cycle_time = iop.eide_pio;
787 debug("cycle time = %d\n", cycle_time);
789 if (cycle_time > 120)
790 mode = 3; /* 120 ns for PIO mode 4 */
791 if (cycle_time > 180)
792 mode = 2; /* 180 ns for PIO mode 3 */
793 if (cycle_time > 240)
794 mode = 1; /* 240 ns for PIO mode 4 */
795 if (cycle_time > 383)
796 mode = 0; /* 383 ns for PIO mode 4 */
798 printf("PIO mode to use: PIO %d\n", mode);
802 if (dev_desc->if_type == IF_TYPE_ATAPI) {
803 atapi_inquiry(dev_desc);
806 #endif /* CONFIG_ATAPI */
810 dev_desc->lba = (iop.lba_capacity << 16) | (iop.lba_capacity >> 16);
811 #else /* ! __BIG_ENDIAN */
813 * do not swap shorts on little endian
815 * See CF+ and CompactFlash Specification Revision 2.0:
816 * 6.2.1.6: Identfy Drive, Table 39, Word Address 57-58 for details.
818 dev_desc->lba = iop.lba_capacity;
819 #endif /* __BIG_ENDIAN */
822 if (iop.command_set_2 & 0x0400) { /* LBA 48 support */
824 dev_desc->lba = (unsigned long long) iop.lba48_capacity[0] |
825 ((unsigned long long) iop.lba48_capacity[1] << 16) |
826 ((unsigned long long) iop.lba48_capacity[2] << 32) |
827 ((unsigned long long) iop.lba48_capacity[3] << 48);
831 #endif /* CONFIG_LBA48 */
833 dev_desc->type = DEV_TYPE_HARDDISK;
834 dev_desc->blksz = ATA_BLOCKSIZE;
835 dev_desc->lun = 0; /* just to fill something in... */
837 #if 0 /* only used to test the powersaving mode,
838 * if enabled, the drive goes after 5 sec
840 ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
841 c = ide_wait(device, IDE_TIME_OUT);
842 ide_outb(device, ATA_SECT_CNT, 1);
843 ide_outb(device, ATA_LBA_LOW, 0);
844 ide_outb(device, ATA_LBA_MID, 0);
845 ide_outb(device, ATA_LBA_HIGH, 0);
846 ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
847 ide_outb(device, ATA_COMMAND, 0xe3);
849 c = ide_wait(device, IDE_TIME_OUT); /* can't take over 500 ms */
854 /* ------------------------------------------------------------------------- */
856 ulong ide_read(int device, lbaint_t blknr, ulong blkcnt, void *buffer)
860 unsigned char pwrsave = 0; /* power save */
863 unsigned char lba48 = 0;
865 if (blknr & 0x0000fffff0000000ULL) {
866 /* more than 28 bits used, use 48bit mode */
870 debug("ide_read dev %d start %lX, blocks %lX buffer at %lX\n",
871 device, blknr, blkcnt, (ulong) buffer);
873 ide_led(DEVICE_LED(device), 1); /* LED on */
877 ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
878 c = ide_wait(device, IDE_TIME_OUT);
880 if (c & ATA_STAT_BUSY) {
881 printf("IDE read: device %d not ready\n", device);
885 /* first check if the drive is in Powersaving mode, if yes,
886 * increase the timeout value */
887 ide_outb(device, ATA_COMMAND, ATA_CMD_CHK_PWR);
890 c = ide_wait(device, IDE_TIME_OUT); /* can't take over 500 ms */
892 if (c & ATA_STAT_BUSY) {
893 printf("IDE read: device %d not ready\n", device);
896 if ((c & ATA_STAT_ERR) == ATA_STAT_ERR) {
897 printf("No Powersaving mode %X\n", c);
899 c = ide_inb(device, ATA_SECT_CNT);
900 debug("Powersaving %02X\n", c);
906 while (blkcnt-- > 0) {
908 c = ide_wait(device, IDE_TIME_OUT);
910 if (c & ATA_STAT_BUSY) {
911 printf("IDE read: device %d not ready\n", device);
916 /* write high bits */
917 ide_outb(device, ATA_SECT_CNT, 0);
918 ide_outb(device, ATA_LBA_LOW, (blknr >> 24) & 0xFF);
919 #ifdef CONFIG_SYS_64BIT_LBA
920 ide_outb(device, ATA_LBA_MID, (blknr >> 32) & 0xFF);
921 ide_outb(device, ATA_LBA_HIGH, (blknr >> 40) & 0xFF);
923 ide_outb(device, ATA_LBA_MID, 0);
924 ide_outb(device, ATA_LBA_HIGH, 0);
928 ide_outb(device, ATA_SECT_CNT, 1);
929 ide_outb(device, ATA_LBA_LOW, (blknr >> 0) & 0xFF);
930 ide_outb(device, ATA_LBA_MID, (blknr >> 8) & 0xFF);
931 ide_outb(device, ATA_LBA_HIGH, (blknr >> 16) & 0xFF);
935 ide_outb(device, ATA_DEV_HD,
936 ATA_LBA | ATA_DEVICE(device));
937 ide_outb(device, ATA_COMMAND, ATA_CMD_READ_EXT);
942 ide_outb(device, ATA_DEV_HD, ATA_LBA |
943 ATA_DEVICE(device) | ((blknr >> 24) & 0xF));
944 ide_outb(device, ATA_COMMAND, ATA_CMD_READ);
950 /* may take up to 4 sec */
951 c = ide_wait(device, IDE_SPIN_UP_TIME_OUT);
954 /* can't take over 500 ms */
955 c = ide_wait(device, IDE_TIME_OUT);
958 if ((c & (ATA_STAT_DRQ | ATA_STAT_BUSY | ATA_STAT_ERR)) !=
960 #if defined(CONFIG_SYS_64BIT_LBA)
961 printf("Error (no IRQ) dev %d blk %lld: status 0x%02x\n",
964 printf("Error (no IRQ) dev %d blk %ld: status 0x%02x\n",
965 device, (ulong) blknr, c);
970 ide_input_data(device, buffer, ATA_SECTORWORDS);
971 (void) ide_inb(device, ATA_STATUS); /* clear IRQ */
975 buffer += ATA_BLOCKSIZE;
978 ide_led(DEVICE_LED(device), 0); /* LED off */
982 /* ------------------------------------------------------------------------- */
985 ulong ide_write(int device, lbaint_t blknr, ulong blkcnt, const void *buffer)
991 unsigned char lba48 = 0;
993 if (blknr & 0x0000fffff0000000ULL) {
994 /* more than 28 bits used, use 48bit mode */
999 ide_led(DEVICE_LED(device), 1); /* LED on */
1003 ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
1005 while (blkcnt-- > 0) {
1007 c = ide_wait(device, IDE_TIME_OUT);
1009 if (c & ATA_STAT_BUSY) {
1010 printf("IDE read: device %d not ready\n", device);
1015 /* write high bits */
1016 ide_outb(device, ATA_SECT_CNT, 0);
1017 ide_outb(device, ATA_LBA_LOW, (blknr >> 24) & 0xFF);
1018 #ifdef CONFIG_SYS_64BIT_LBA
1019 ide_outb(device, ATA_LBA_MID, (blknr >> 32) & 0xFF);
1020 ide_outb(device, ATA_LBA_HIGH, (blknr >> 40) & 0xFF);
1022 ide_outb(device, ATA_LBA_MID, 0);
1023 ide_outb(device, ATA_LBA_HIGH, 0);
1027 ide_outb(device, ATA_SECT_CNT, 1);
1028 ide_outb(device, ATA_LBA_LOW, (blknr >> 0) & 0xFF);
1029 ide_outb(device, ATA_LBA_MID, (blknr >> 8) & 0xFF);
1030 ide_outb(device, ATA_LBA_HIGH, (blknr >> 16) & 0xFF);
1034 ide_outb(device, ATA_DEV_HD,
1035 ATA_LBA | ATA_DEVICE(device));
1036 ide_outb(device, ATA_COMMAND, ATA_CMD_WRITE_EXT);
1041 ide_outb(device, ATA_DEV_HD, ATA_LBA |
1042 ATA_DEVICE(device) | ((blknr >> 24) & 0xF));
1043 ide_outb(device, ATA_COMMAND, ATA_CMD_WRITE);
1048 /* can't take over 500 ms */
1049 c = ide_wait(device, IDE_TIME_OUT);
1051 if ((c & (ATA_STAT_DRQ | ATA_STAT_BUSY | ATA_STAT_ERR)) !=
1053 #if defined(CONFIG_SYS_64BIT_LBA)
1054 printf("Error (no IRQ) dev %d blk %lld: status 0x%02x\n",
1057 printf("Error (no IRQ) dev %d blk %ld: status 0x%02x\n",
1058 device, (ulong) blknr, c);
1063 ide_output_data(device, buffer, ATA_SECTORWORDS);
1064 c = ide_inb(device, ATA_STATUS); /* clear IRQ */
1067 buffer += ATA_BLOCKSIZE;
1070 ide_led(DEVICE_LED(device), 0); /* LED off */
1074 /* ------------------------------------------------------------------------- */
1077 * copy src to dest, skipping leading and trailing blanks and null
1078 * terminate the string
1079 * "len" is the size of available memory including the terminating '\0'
1081 static void ident_cpy(unsigned char *dst, unsigned char *src,
1084 unsigned char *end, *last;
1087 end = src + len - 1;
1089 /* reserve space for '\0' */
1093 /* skip leading white space */
1094 while ((*src) && (src < end) && (*src == ' '))
1097 /* copy string, omitting trailing white space */
1098 while ((*src) && (src < end)) {
1107 /* ------------------------------------------------------------------------- */
1110 * Wait until Busy bit is off, or timeout (in ms)
1111 * Return last status
1113 static uchar ide_wait(int dev, ulong t)
1115 ulong delay = 10 * t; /* poll every 100 us */
1118 while ((c = ide_inb(dev, ATA_STATUS)) & ATA_STAT_BUSY) {
1126 /* ------------------------------------------------------------------------- */
1128 #ifdef CONFIG_IDE_RESET
1129 extern void ide_set_reset(int idereset);
1131 static void ide_reset(void)
1136 for (i = 0; i < CONFIG_SYS_IDE_MAXBUS; ++i)
1138 for (i = 0; i < CONFIG_SYS_IDE_MAXDEVICE; ++i)
1139 ide_dev_desc[i].type = DEV_TYPE_UNKNOWN;
1141 ide_set_reset(1); /* assert reset */
1143 /* the reset signal shall be asserted for et least 25 us */
1148 /* de-assert RESET signal */
1152 for (i = 0; i < 250; ++i)
1156 #endif /* CONFIG_IDE_RESET */
1158 /* ------------------------------------------------------------------------- */
1160 #if defined(CONFIG_OF_IDE_FIXUP)
1161 int ide_device_present(int dev)
1163 if (dev >= CONFIG_SYS_IDE_MAXBUS)
1165 return (ide_dev_desc[dev].type == DEV_TYPE_UNKNOWN ? 0 : 1);
1168 /* ------------------------------------------------------------------------- */
1171 /****************************************************************************
1175 void ide_input_data_shorts(int dev, ushort *sect_buf, int shorts)
1176 __attribute__ ((weak, alias("__ide_input_data_shorts")));
1178 void ide_output_data_shorts(int dev, ushort *sect_buf, int shorts)
1179 __attribute__ ((weak, alias("__ide_output_data_shorts")));
1182 #if defined(CONFIG_IDE_SWAP_IO)
1183 /* since ATAPI may use commands with not 4 bytes alligned length
1184 * we have our own transfer functions, 2 bytes alligned */
1185 void __ide_output_data_shorts(int dev, ushort *sect_buf, int shorts)
1188 volatile ushort *pbuf;
1190 pbuf = (ushort *) (ATA_CURR_BASE(dev) + ATA_DATA_REG);
1191 dbuf = (ushort *) sect_buf;
1193 debug("in output data shorts base for read is %lx\n",
1194 (unsigned long) pbuf);
1202 void __ide_input_data_shorts(int dev, ushort *sect_buf, int shorts)
1205 volatile ushort *pbuf;
1207 pbuf = (ushort *) (ATA_CURR_BASE(dev) + ATA_DATA_REG);
1208 dbuf = (ushort *) sect_buf;
1210 debug("in input data shorts base for read is %lx\n",
1211 (unsigned long) pbuf);
1219 #else /* ! CONFIG_IDE_SWAP_IO */
1220 void __ide_output_data_shorts(int dev, ushort *sect_buf, int shorts)
1222 outsw(ATA_CURR_BASE(dev) + ATA_DATA_REG, sect_buf, shorts);
1225 void __ide_input_data_shorts(int dev, ushort *sect_buf, int shorts)
1227 insw(ATA_CURR_BASE(dev) + ATA_DATA_REG, sect_buf, shorts);
1230 #endif /* CONFIG_IDE_SWAP_IO */
1233 * Wait until (Status & mask) == res, or timeout (in ms)
1234 * Return last status
1235 * This is used since some ATAPI CD ROMs clears their Busy Bit first
1236 * and then they set their DRQ Bit
1238 static uchar atapi_wait_mask(int dev, ulong t, uchar mask, uchar res)
1240 ulong delay = 10 * t; /* poll every 100 us */
1243 /* prevents to read the status before valid */
1244 c = ide_inb(dev, ATA_DEV_CTL);
1246 while (((c = ide_inb(dev, ATA_STATUS)) & mask) != res) {
1247 /* break if error occurs (doesn't make sense to wait more) */
1248 if ((c & ATA_STAT_ERR) == ATA_STAT_ERR)
1258 * issue an atapi command
1260 unsigned char atapi_issue(int device, unsigned char *ccb, int ccblen,
1261 unsigned char *buffer, int buflen)
1263 unsigned char c, err, mask, res;
1266 ide_led(DEVICE_LED(device), 1); /* LED on */
1270 mask = ATA_STAT_BUSY | ATA_STAT_DRQ;
1272 ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
1273 c = atapi_wait_mask(device, ATAPI_TIME_OUT, mask, res);
1274 if ((c & mask) != res) {
1275 printf("ATAPI_ISSUE: device %d not ready status %X\n", device,
1280 /* write taskfile */
1281 ide_outb(device, ATA_ERROR_REG, 0); /* no DMA, no overlaped */
1282 ide_outb(device, ATA_SECT_CNT, 0);
1283 ide_outb(device, ATA_SECT_NUM, 0);
1284 ide_outb(device, ATA_CYL_LOW, (unsigned char) (buflen & 0xFF));
1285 ide_outb(device, ATA_CYL_HIGH,
1286 (unsigned char) ((buflen >> 8) & 0xFF));
1287 ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
1289 ide_outb(device, ATA_COMMAND, ATAPI_CMD_PACKET);
1292 mask = ATA_STAT_DRQ | ATA_STAT_BUSY | ATA_STAT_ERR;
1294 c = atapi_wait_mask(device, ATAPI_TIME_OUT, mask, res);
1296 if ((c & mask) != res) { /* DRQ must be 1, BSY 0 */
1297 printf("ATAPI_ISSUE: Error (no IRQ) before sending ccb dev %d status 0x%02x\n",
1303 /* write command block */
1304 ide_output_data_shorts(device, (unsigned short *) ccb, ccblen / 2);
1306 /* ATAPI Command written wait for completition */
1307 udelay(5000); /* device must set bsy */
1309 mask = ATA_STAT_DRQ | ATA_STAT_BUSY | ATA_STAT_ERR;
1311 * if no data wait for DRQ = 0 BSY = 0
1312 * if data wait for DRQ = 1 BSY = 0
1317 c = atapi_wait_mask(device, ATAPI_TIME_OUT, mask, res);
1318 if ((c & mask) != res) {
1319 if (c & ATA_STAT_ERR) {
1320 err = (ide_inb(device, ATA_ERROR_REG)) >> 4;
1321 debug("atapi_issue 1 returned sense key %X status %02X\n",
1324 printf("ATAPI_ISSUE: (no DRQ) after sending ccb (%x) status 0x%02x\n",
1330 n = ide_inb(device, ATA_CYL_HIGH);
1332 n += ide_inb(device, ATA_CYL_LOW);
1334 printf("ERROR, transfer bytes %d requested only %d\n", n,
1339 if ((n == 0) && (buflen < 0)) {
1340 printf("ERROR, transfer bytes %d requested %d\n", n, buflen);
1345 debug("WARNING, transfer bytes %d not equal with requested %d\n",
1348 if (n != 0) { /* data transfer */
1349 debug("ATAPI_ISSUE: %d Bytes to transfer\n", n);
1350 /* we transfer shorts */
1352 /* ok now decide if it is an in or output */
1353 if ((ide_inb(device, ATA_SECT_CNT) & 0x02) == 0) {
1354 debug("Write to device\n");
1355 ide_output_data_shorts(device,
1356 (unsigned short *) buffer, n);
1358 debug("Read from device @ %p shorts %d\n", buffer, n);
1359 ide_input_data_shorts(device,
1360 (unsigned short *) buffer, n);
1363 udelay(5000); /* seems that some CD ROMs need this... */
1364 mask = ATA_STAT_BUSY | ATA_STAT_ERR;
1366 c = atapi_wait_mask(device, ATAPI_TIME_OUT, mask, res);
1367 if ((c & ATA_STAT_ERR) == ATA_STAT_ERR) {
1368 err = (ide_inb(device, ATA_ERROR_REG) >> 4);
1369 debug("atapi_issue 2 returned sense key %X status %X\n", err,
1375 ide_led(DEVICE_LED(device), 0); /* LED off */
1380 * sending the command to atapi_issue. If an status other than good
1381 * returns, an request_sense will be issued
1384 #define ATAPI_DRIVE_NOT_READY 100
1385 #define ATAPI_UNIT_ATTN 10
1387 unsigned char atapi_issue_autoreq(int device,
1390 unsigned char *buffer, int buflen)
1392 unsigned char sense_data[18], sense_ccb[12];
1393 unsigned char res, key, asc, ascq;
1394 int notready, unitattn;
1396 unitattn = ATAPI_UNIT_ATTN;
1397 notready = ATAPI_DRIVE_NOT_READY;
1400 res = atapi_issue(device, ccb, ccblen, buffer, buflen);
1405 return 0xFF; /* error */
1407 debug("(auto_req)atapi_issue returned sense key %X\n", res);
1409 memset(sense_ccb, 0, sizeof(sense_ccb));
1410 memset(sense_data, 0, sizeof(sense_data));
1411 sense_ccb[0] = ATAPI_CMD_REQ_SENSE;
1412 sense_ccb[4] = 18; /* allocation Length */
1414 res = atapi_issue(device, sense_ccb, 12, sense_data, 18);
1415 key = (sense_data[2] & 0xF);
1416 asc = (sense_data[12]);
1417 ascq = (sense_data[13]);
1419 debug("ATAPI_CMD_REQ_SENSE returned %x\n", res);
1420 debug(" Sense page: %02X key %02X ASC %02X ASCQ %02X\n",
1421 sense_data[0], key, asc, ascq);
1424 return 0; /* ok device ready */
1426 if ((key == 6) || (asc == 0x29) || (asc == 0x28)) { /* Unit Attention */
1427 if (unitattn-- > 0) {
1431 printf("Unit Attention, tried %d\n", ATAPI_UNIT_ATTN);
1434 if ((asc == 0x4) && (ascq == 0x1)) {
1435 /* not ready, but will be ready soon */
1436 if (notready-- > 0) {
1440 printf("Drive not ready, tried %d times\n",
1441 ATAPI_DRIVE_NOT_READY);
1445 debug("Media not present\n");
1449 printf("ERROR: Unknown Sense key %02X ASC %02X ASCQ %02X\n", key, asc,
1452 debug("ERROR Sense key %02X ASC %02X ASCQ %02X\n", key, asc, ascq);
1457 static void atapi_inquiry(block_dev_desc_t *dev_desc)
1459 unsigned char ccb[12]; /* Command descriptor block */
1460 unsigned char iobuf[64]; /* temp buf */
1464 device = dev_desc->dev;
1465 dev_desc->type = DEV_TYPE_UNKNOWN; /* not yet valid */
1466 dev_desc->block_read = atapi_read;
1468 memset(ccb, 0, sizeof(ccb));
1469 memset(iobuf, 0, sizeof(iobuf));
1471 ccb[0] = ATAPI_CMD_INQUIRY;
1472 ccb[4] = 40; /* allocation Legnth */
1473 c = atapi_issue_autoreq(device, ccb, 12, (unsigned char *) iobuf, 40);
1475 debug("ATAPI_CMD_INQUIRY returned %x\n", c);
1479 /* copy device ident strings */
1480 ident_cpy((unsigned char *) dev_desc->vendor, &iobuf[8], 8);
1481 ident_cpy((unsigned char *) dev_desc->product, &iobuf[16], 16);
1482 ident_cpy((unsigned char *) dev_desc->revision, &iobuf[32], 5);
1486 dev_desc->blksz = 0;
1487 dev_desc->type = iobuf[0] & 0x1f;
1489 if ((iobuf[1] & 0x80) == 0x80)
1490 dev_desc->removable = 1;
1492 dev_desc->removable = 0;
1494 memset(ccb, 0, sizeof(ccb));
1495 memset(iobuf, 0, sizeof(iobuf));
1496 ccb[0] = ATAPI_CMD_START_STOP;
1497 ccb[4] = 0x03; /* start */
1499 c = atapi_issue_autoreq(device, ccb, 12, (unsigned char *) iobuf, 0);
1501 debug("ATAPI_CMD_START_STOP returned %x\n", c);
1505 memset(ccb, 0, sizeof(ccb));
1506 memset(iobuf, 0, sizeof(iobuf));
1507 c = atapi_issue_autoreq(device, ccb, 12, (unsigned char *) iobuf, 0);
1509 debug("ATAPI_CMD_UNIT_TEST_READY returned %x\n", c);
1513 memset(ccb, 0, sizeof(ccb));
1514 memset(iobuf, 0, sizeof(iobuf));
1515 ccb[0] = ATAPI_CMD_READ_CAP;
1516 c = atapi_issue_autoreq(device, ccb, 12, (unsigned char *) iobuf, 8);
1517 debug("ATAPI_CMD_READ_CAP returned %x\n", c);
1521 debug("Read Cap: LBA %02X%02X%02X%02X blksize %02X%02X%02X%02X\n",
1522 iobuf[0], iobuf[1], iobuf[2], iobuf[3],
1523 iobuf[4], iobuf[5], iobuf[6], iobuf[7]);
1525 dev_desc->lba = ((unsigned long) iobuf[0] << 24) +
1526 ((unsigned long) iobuf[1] << 16) +
1527 ((unsigned long) iobuf[2] << 8) + ((unsigned long) iobuf[3]);
1528 dev_desc->blksz = ((unsigned long) iobuf[4] << 24) +
1529 ((unsigned long) iobuf[5] << 16) +
1530 ((unsigned long) iobuf[6] << 8) + ((unsigned long) iobuf[7]);
1532 /* ATAPI devices cannot use 48bit addressing (ATA/ATAPI v7) */
1533 dev_desc->lba48 = 0;
1541 * we transfer only one block per command, since the multiple DRQ per
1542 * command is not yet implemented
1544 #define ATAPI_READ_MAX_BYTES 2048 /* we read max 2kbytes */
1545 #define ATAPI_READ_BLOCK_SIZE 2048 /* assuming CD part */
1546 #define ATAPI_READ_MAX_BLOCK (ATAPI_READ_MAX_BYTES/ATAPI_READ_BLOCK_SIZE)
1548 ulong atapi_read(int device, lbaint_t blknr, ulong blkcnt, void *buffer)
1551 unsigned char ccb[12]; /* Command descriptor block */
1554 debug("atapi_read dev %d start %lX, blocks %lX buffer at %lX\n",
1555 device, blknr, blkcnt, (ulong) buffer);
1558 if (blkcnt > ATAPI_READ_MAX_BLOCK)
1559 cnt = ATAPI_READ_MAX_BLOCK;
1563 ccb[0] = ATAPI_CMD_READ_12;
1564 ccb[1] = 0; /* reserved */
1565 ccb[2] = (unsigned char) (blknr >> 24) & 0xFF; /* MSB Block */
1566 ccb[3] = (unsigned char) (blknr >> 16) & 0xFF; /* */
1567 ccb[4] = (unsigned char) (blknr >> 8) & 0xFF;
1568 ccb[5] = (unsigned char) blknr & 0xFF; /* LSB Block */
1569 ccb[6] = (unsigned char) (cnt >> 24) & 0xFF; /* MSB Block cnt */
1570 ccb[7] = (unsigned char) (cnt >> 16) & 0xFF;
1571 ccb[8] = (unsigned char) (cnt >> 8) & 0xFF;
1572 ccb[9] = (unsigned char) cnt & 0xFF; /* LSB Block */
1573 ccb[10] = 0; /* reserved */
1574 ccb[11] = 0; /* reserved */
1576 if (atapi_issue_autoreq(device, ccb, 12,
1577 (unsigned char *) buffer,
1578 cnt * ATAPI_READ_BLOCK_SIZE)
1585 buffer += (cnt * ATAPI_READ_BLOCK_SIZE);
1586 } while (blkcnt > 0);
1590 /* ------------------------------------------------------------------------- */
1592 #endif /* CONFIG_ATAPI */
1594 U_BOOT_CMD(ide, 5, 1, do_ide,
1596 "reset - reset IDE controller\n"
1597 "ide info - show available IDE devices\n"
1598 "ide device [dev] - show or set current device\n"
1599 "ide part [dev] - print partition table of one or all IDE devices\n"
1600 "ide read addr blk# cnt\n"
1601 "ide write addr blk# cnt - read/write `cnt'"
1602 " blocks starting at block `blk#'\n"
1603 " to/from memory address `addr'");
1605 U_BOOT_CMD(diskboot, 3, 1, do_diskboot,
1606 "boot from IDE device", "loadAddr dev:part");