Remove the cmd_ prefix from command files

Now that they are in their own directory, we can remove this prefix.
This makes it easier to find a file since the prefix does not get in the
way.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Acked-by: Stefan Roese <sr@denx.de>
Acked-by: Przemyslaw Marczak <p.marczak@samsung.com>

1 files changed, 1457 insertions, 0 deletions

diff --git a/cmd/ide.c b/cmd/ide.c
new file mode 100644
index 0000000000..f19a7ce42a
--- /dev/null
+++ b/cmd/ide.c
@@ -0,0 +1,1457 @@
+/*
+ * (C) Copyright 2000-2011
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+/*
+ * IDE support
+ */
+
+#include <common.h>
+#include <config.h>
+#include <watchdog.h>
+#include <command.h>
+#include <image.h>
+#include <asm/byteorder.h>
+#include <asm/io.h>
+
+#if defined(CONFIG_IDE_8xx_DIRECT) || defined(CONFIG_IDE_PCMCIA)
+# include <pcmcia.h>
+#endif
+
+#include <ide.h>
+#include <ata.h>
+
+#ifdef CONFIG_STATUS_LED
+# include <status_led.h>
+#endif
+
+#ifdef __PPC__
+# define EIEIO		__asm__ volatile ("eieio")
+# define SYNC		__asm__ volatile ("sync")
+#else
+# define EIEIO		/* nothing */
+# define SYNC		/* nothing */
+#endif
+
+/* ------------------------------------------------------------------------- */
+
+/* Current I/O Device	*/
+static int curr_device = -1;
+
+/* Current offset for IDE0 / IDE1 bus access	*/
+ulong ide_bus_offset[CONFIG_SYS_IDE_MAXBUS] = {
+#if defined(CONFIG_SYS_ATA_IDE0_OFFSET)
+	CONFIG_SYS_ATA_IDE0_OFFSET,
+#endif
+#if defined(CONFIG_SYS_ATA_IDE1_OFFSET) && (CONFIG_SYS_IDE_MAXBUS > 1)
+	CONFIG_SYS_ATA_IDE1_OFFSET,
+#endif
+};
+
+static int ide_bus_ok[CONFIG_SYS_IDE_MAXBUS];
+
+block_dev_desc_t ide_dev_desc[CONFIG_SYS_IDE_MAXDEVICE];
+/* ------------------------------------------------------------------------- */
+
+#ifdef CONFIG_IDE_RESET
+static void  ide_reset (void);
+#else
+#define ide_reset()	/* dummy */
+#endif
+
+static void  ide_ident (block_dev_desc_t *dev_desc);
+static uchar ide_wait  (int dev, ulong t);
+
+#define IDE_TIME_OUT	2000	/* 2 sec timeout */
+
+#define ATAPI_TIME_OUT	7000	/* 7 sec timeout (5 sec seems to work...) */
+
+#define IDE_SPIN_UP_TIME_OUT 5000 /* 5 sec spin-up timeout */
+
+static void ident_cpy (unsigned char *dest, unsigned char *src, unsigned int len);
+
+#ifndef CONFIG_SYS_ATA_PORT_ADDR
+#define CONFIG_SYS_ATA_PORT_ADDR(port) (port)
+#endif
+
+#ifdef CONFIG_ATAPI
+static void	atapi_inquiry(block_dev_desc_t *dev_desc);
+static ulong atapi_read(block_dev_desc_t *block_dev, lbaint_t blknr,
+			lbaint_t blkcnt, void *buffer);
+#endif
+
+
+/* ------------------------------------------------------------------------- */
+
+int do_ide(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
+{
+	int rcode = 0;
+
+	switch (argc) {
+	case 0:
+	case 1:
+		return CMD_RET_USAGE;
+	case 2:
+		if (strncmp(argv[1], "res", 3) == 0) {
+			puts("\nReset IDE"
+#ifdef CONFIG_IDE_8xx_DIRECT
+			     " on PCMCIA " PCMCIA_SLOT_MSG
+#endif
+			     ": ");
+
+			ide_init();
+			return 0;
+		} else if (strncmp(argv[1], "inf", 3) == 0) {
+			int i;
+
+			putc('\n');
+
+			for (i = 0; i < CONFIG_SYS_IDE_MAXDEVICE; ++i) {
+				if (ide_dev_desc[i].type == DEV_TYPE_UNKNOWN)
+					continue;  /* list only known devices */
+				printf("IDE device %d: ", i);
+				dev_print(&ide_dev_desc[i]);
+			}
+			return 0;
+
+		} else if (strncmp(argv[1], "dev", 3) == 0) {
+			if ((curr_device < 0)
+			    || (curr_device >= CONFIG_SYS_IDE_MAXDEVICE)) {
+				puts("\nno IDE devices available\n");
+				return 1;
+			}
+			printf("\nIDE device %d: ", curr_device);
+			dev_print(&ide_dev_desc[curr_device]);
+			return 0;
+		} else if (strncmp(argv[1], "part", 4) == 0) {
+			int dev, ok;
+
+			for (ok = 0, dev = 0;
+			     dev < CONFIG_SYS_IDE_MAXDEVICE;
+			     ++dev) {
+				if (ide_dev_desc[dev].part_type !=
+				    PART_TYPE_UNKNOWN) {
+					++ok;
+					if (dev)
+						putc('\n');
+					print_part(&ide_dev_desc[dev]);
+				}
+			}
+			if (!ok) {
+				puts("\nno IDE devices available\n");
+				rcode++;
+			}
+			return rcode;
+		}
+		return CMD_RET_USAGE;
+	case 3:
+		if (strncmp(argv[1], "dev", 3) == 0) {
+			int dev = (int) simple_strtoul(argv[2], NULL, 10);
+
+			printf("\nIDE device %d: ", dev);
+			if (dev >= CONFIG_SYS_IDE_MAXDEVICE) {
+				puts("unknown device\n");
+				return 1;
+			}
+			dev_print(&ide_dev_desc[dev]);
+			/*ide_print (dev); */
+
+			if (ide_dev_desc[dev].type == DEV_TYPE_UNKNOWN)
+				return 1;
+
+			curr_device = dev;
+
+			puts("... is now current device\n");
+
+			return 0;
+		} else if (strncmp(argv[1], "part", 4) == 0) {
+			int dev = (int) simple_strtoul(argv[2], NULL, 10);
+
+			if (ide_dev_desc[dev].part_type != PART_TYPE_UNKNOWN) {
+				print_part(&ide_dev_desc[dev]);
+			} else {
+				printf("\nIDE device %d not available\n",
+				       dev);
+				rcode = 1;
+			}
+			return rcode;
+		}
+
+		return CMD_RET_USAGE;
+	default:
+		/* at least 4 args */
+
+		if (strcmp(argv[1], "read") == 0) {
+			ulong addr = simple_strtoul(argv[2], NULL, 16);
+			ulong cnt = simple_strtoul(argv[4], NULL, 16);
+			block_dev_desc_t *dev_desc;
+			ulong n;
+
+#ifdef CONFIG_SYS_64BIT_LBA
+			lbaint_t blk = simple_strtoull(argv[3], NULL, 16);
+
+			printf("\nIDE read: device %d block # %lld, count %ld ... ",
+				curr_device, blk, cnt);
+#else
+			lbaint_t blk = simple_strtoul(argv[3], NULL, 16);
+
+			printf("\nIDE read: device %d block # %ld, count %ld ... ",
+				curr_device, blk, cnt);
+#endif
+
+			dev_desc = &ide_dev_desc[curr_device];
+			n = dev_desc->block_read(dev_desc, blk, cnt,
+						 (ulong *)addr);
+			/* flush cache after read */
+			flush_cache(addr,
+				    cnt * ide_dev_desc[curr_device].blksz);
+
+			printf("%ld blocks read: %s\n",
+			       n, (n == cnt) ? "OK" : "ERROR");
+			if (n == cnt)
+				return 0;
+			else
+				return 1;
+		} else if (strcmp(argv[1], "write") == 0) {
+			ulong addr = simple_strtoul(argv[2], NULL, 16);
+			ulong cnt = simple_strtoul(argv[4], NULL, 16);
+			ulong n;
+
+#ifdef CONFIG_SYS_64BIT_LBA
+			lbaint_t blk = simple_strtoull(argv[3], NULL, 16);
+
+			printf("\nIDE write: device %d block # %lld, count %ld ... ",
+				curr_device, blk, cnt);
+#else
+			lbaint_t blk = simple_strtoul(argv[3], NULL, 16);
+
+			printf("\nIDE write: device %d block # %ld, count %ld ... ",
+				curr_device, blk, cnt);
+#endif
+			n = ide_write(&ide_dev_desc[curr_device], blk, cnt,
+				      (ulong *)addr);
+
+			printf("%ld blocks written: %s\n",
+				n, (n == cnt) ? "OK" : "ERROR");
+			if (n == cnt)
+				return 0;
+			else
+				return 1;
+		} else {
+			return CMD_RET_USAGE;
+		}
+
+		return rcode;
+	}
+}
+
+int do_diskboot(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
+{
+	return common_diskboot(cmdtp, "ide", argc, argv);
+}
+
+/* ------------------------------------------------------------------------- */
+
+__weak void ide_led(uchar led, uchar status)
+{
+#if defined(CONFIG_IDE_LED) && defined(PER8_BASE) /* required by LED_PORT */
+	static uchar led_buffer;	/* Buffer for current LED status */
+
+	uchar *led_port = LED_PORT;
+
+	if (status)		/* switch LED on        */
+		led_buffer |= led;
+	else			/* switch LED off       */
+		led_buffer &= ~led;
+
+	*led_port = led_buffer;
+#endif
+}
+
+#ifndef CONFIG_IDE_LED	/* define LED macros, they are not used anyways */
+# define DEVICE_LED(x) 0
+# define LED_IDE1 1
+# define LED_IDE2 2
+#endif
+
+/* ------------------------------------------------------------------------- */
+
+__weak void ide_outb(int dev, int port, unsigned char val)
+{
+	debug("ide_outb (dev= %d, port= 0x%x, val= 0x%02x) : @ 0x%08lx\n",
+	      dev, port, val,
+	      (ATA_CURR_BASE(dev) + CONFIG_SYS_ATA_PORT_ADDR(port)));
+
+#if defined(CONFIG_IDE_AHB)
+	if (port) {
+		/* write command */
+		ide_write_register(dev, port, val);
+	} else {
+		/* write data */
+		outb(val, (ATA_CURR_BASE(dev)));
+	}
+#else
+	outb(val, (ATA_CURR_BASE(dev) + CONFIG_SYS_ATA_PORT_ADDR(port)));
+#endif
+}
+
+__weak unsigned char ide_inb(int dev, int port)
+{
+	uchar val;
+
+#if defined(CONFIG_IDE_AHB)
+	val = ide_read_register(dev, port);
+#else
+	val = inb((ATA_CURR_BASE(dev) + CONFIG_SYS_ATA_PORT_ADDR(port)));
+#endif
+
+	debug("ide_inb (dev= %d, port= 0x%x) : @ 0x%08lx -> 0x%02x\n",
+	      dev, port,
+	      (ATA_CURR_BASE(dev) + CONFIG_SYS_ATA_PORT_ADDR(port)), val);
+	return val;
+}
+
+void ide_init(void)
+{
+	unsigned char c;
+	int i, bus;
+
+#ifdef CONFIG_IDE_8xx_PCCARD
+	extern int ide_devices_found;	/* Initialized in check_ide_device() */
+#endif /* CONFIG_IDE_8xx_PCCARD */
+
+#ifdef CONFIG_IDE_PREINIT
+	WATCHDOG_RESET();
+
+	if (ide_preinit()) {
+		puts("ide_preinit failed\n");
+		return;
+	}
+#endif /* CONFIG_IDE_PREINIT */
+
+	WATCHDOG_RESET();
+
+	/*
+	 * Reset the IDE just to be sure.
+	 * Light LED's to show
+	 */
+	ide_led((LED_IDE1 | LED_IDE2), 1);	/* LED's on     */
+
+	/* ATAPI Drives seems to need a proper IDE Reset */
+	ide_reset();
+
+#ifdef CONFIG_IDE_INIT_POSTRESET
+	WATCHDOG_RESET();
+
+	if (ide_init_postreset()) {
+		puts("ide_preinit_postreset failed\n");
+		return;
+	}
+#endif /* CONFIG_IDE_INIT_POSTRESET */
+
+	/*
+	 * Wait for IDE to get ready.
+	 * According to spec, this can take up to 31 seconds!
+	 */
+	for (bus = 0; bus < CONFIG_SYS_IDE_MAXBUS; ++bus) {
+		int dev =
+			bus * (CONFIG_SYS_IDE_MAXDEVICE /
+			       CONFIG_SYS_IDE_MAXBUS);
+
+#ifdef CONFIG_IDE_8xx_PCCARD
+		/* Skip non-ide devices from probing */
+		if ((ide_devices_found & (1 << bus)) == 0) {
+			ide_led((LED_IDE1 | LED_IDE2), 0);	/* LED's off */
+			continue;
+		}
+#endif
+		printf("Bus %d: ", bus);
+
+		ide_bus_ok[bus] = 0;
+
+		/* Select device
+		 */
+		udelay(100000);	/* 100 ms */
+		ide_outb(dev, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(dev));
+		udelay(100000);	/* 100 ms */
+		i = 0;
+		do {
+			udelay(10000);	/* 10 ms */
+
+			c = ide_inb(dev, ATA_STATUS);
+			i++;
+			if (i > (ATA_RESET_TIME * 100)) {
+				puts("** Timeout **\n");
+				/* LED's off */
+				ide_led((LED_IDE1 | LED_IDE2), 0);
+				return;
+			}
+			if ((i >= 100) && ((i % 100) == 0))
+				putc('.');
+
+		} while (c & ATA_STAT_BUSY);
+
+		if (c & (ATA_STAT_BUSY | ATA_STAT_FAULT)) {
+			puts("not available  ");
+			debug("Status = 0x%02X ", c);
+#ifndef CONFIG_ATAPI		/* ATAPI Devices do not set DRDY */
+		} else if ((c & ATA_STAT_READY) == 0) {
+			puts("not available  ");
+			debug("Status = 0x%02X ", c);
+#endif
+		} else {
+			puts("OK ");
+			ide_bus_ok[bus] = 1;
+		}
+		WATCHDOG_RESET();
+	}
+
+	putc('\n');
+
+	ide_led((LED_IDE1 | LED_IDE2), 0);	/* LED's off    */
+
+	curr_device = -1;
+	for (i = 0; i < CONFIG_SYS_IDE_MAXDEVICE; ++i) {
+		int led = (IDE_BUS(i) == 0) ? LED_IDE1 : LED_IDE2;
+		ide_dev_desc[i].type = DEV_TYPE_UNKNOWN;
+		ide_dev_desc[i].if_type = IF_TYPE_IDE;
+		ide_dev_desc[i].dev = i;
+		ide_dev_desc[i].part_type = PART_TYPE_UNKNOWN;
+		ide_dev_desc[i].blksz = 0;
+		ide_dev_desc[i].log2blksz =
+			LOG2_INVALID(typeof(ide_dev_desc[i].log2blksz));
+		ide_dev_desc[i].lba = 0;
+		ide_dev_desc[i].block_read = ide_read;
+		ide_dev_desc[i].block_write = ide_write;
+		if (!ide_bus_ok[IDE_BUS(i)])
+			continue;
+		ide_led(led, 1);	/* LED on       */
+		ide_ident(&ide_dev_desc[i]);
+		ide_led(led, 0);	/* LED off      */
+		dev_print(&ide_dev_desc[i]);
+
+		if ((ide_dev_desc[i].lba > 0) && (ide_dev_desc[i].blksz > 0)) {
+			/* initialize partition type */
+			init_part(&ide_dev_desc[i]);
+			if (curr_device < 0)
+				curr_device = i;
+		}
+	}
+	WATCHDOG_RESET();
+}
+
+/* ------------------------------------------------------------------------- */
+
+#ifdef CONFIG_PARTITIONS
+block_dev_desc_t *ide_get_dev(int dev)
+{
+	return (dev < CONFIG_SYS_IDE_MAXDEVICE) ? &ide_dev_desc[dev] : NULL;
+}
+#endif
+
+/* ------------------------------------------------------------------------- */
+
+/* We only need to swap data if we are running on a big endian cpu. */
+#if defined(__LITTLE_ENDIAN)
+__weak void ide_input_swap_data(int dev, ulong *sect_buf, int words)
+{
+	ide_input_data(dev, sect_buf, words);
+}
+#else
+__weak void ide_input_swap_data(int dev, ulong *sect_buf, int words)
+{
+	volatile ushort *pbuf =
+		(ushort *) (ATA_CURR_BASE(dev) + ATA_DATA_REG);
+	ushort *dbuf = (ushort *) sect_buf;
+
+	debug("in input swap data base for read is %lx\n",
+	      (unsigned long) pbuf);
+
+	while (words--) {
+#ifdef __MIPS__
+		*dbuf++ = swab16p((u16 *) pbuf);
+		*dbuf++ = swab16p((u16 *) pbuf);
+#else
+		*dbuf++ = ld_le16(pbuf);
+		*dbuf++ = ld_le16(pbuf);
+#endif /* !MIPS */
+	}
+}
+#endif /* __LITTLE_ENDIAN */
+
+
+#if defined(CONFIG_IDE_SWAP_IO)
+__weak void ide_output_data(int dev, const ulong *sect_buf, int words)
+{
+	ushort *dbuf;
+	volatile ushort *pbuf;
+
+	pbuf = (ushort *) (ATA_CURR_BASE(dev) + ATA_DATA_REG);
+	dbuf = (ushort *) sect_buf;
+	while (words--) {
+		EIEIO;
+		*pbuf = *dbuf++;
+		EIEIO;
+		*pbuf = *dbuf++;
+	}
+}
+#else  /* ! CONFIG_IDE_SWAP_IO */
+__weak void ide_output_data(int dev, const ulong *sect_buf, int words)
+{
+#if defined(CONFIG_IDE_AHB)
+	ide_write_data(dev, sect_buf, words);
+#else
+	outsw(ATA_CURR_BASE(dev) + ATA_DATA_REG, sect_buf, words << 1);
+#endif
+}
+#endif /* CONFIG_IDE_SWAP_IO */
+
+#if defined(CONFIG_IDE_SWAP_IO)
+__weak void ide_input_data(int dev, ulong *sect_buf, int words)
+{
+	ushort *dbuf;
+	volatile ushort *pbuf;
+
+	pbuf = (ushort *) (ATA_CURR_BASE(dev) + ATA_DATA_REG);
+	dbuf = (ushort *) sect_buf;
+
+	debug("in input data base for read is %lx\n", (unsigned long) pbuf);
+
+	while (words--) {
+		EIEIO;
+		*dbuf++ = *pbuf;
+		EIEIO;
+		*dbuf++ = *pbuf;
+	}
+}
+#else  /* ! CONFIG_IDE_SWAP_IO */
+__weak void ide_input_data(int dev, ulong *sect_buf, int words)
+{
+#if defined(CONFIG_IDE_AHB)
+	ide_read_data(dev, sect_buf, words);
+#else
+	insw(ATA_CURR_BASE(dev) + ATA_DATA_REG, sect_buf, words << 1);
+#endif
+}
+
+#endif /* CONFIG_IDE_SWAP_IO */
+
+/* -------------------------------------------------------------------------
+ */
+static void ide_ident(block_dev_desc_t *dev_desc)
+{
+	unsigned char c;
+	hd_driveid_t iop;
+
+#ifdef CONFIG_ATAPI
+	int retries = 0;
+#endif
+	int device;
+
+	device = dev_desc->dev;
+	printf("  Device %d: ", device);
+
+	ide_led(DEVICE_LED(device), 1);	/* LED on       */
+	/* Select device
+	 */
+	ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
+	dev_desc->if_type = IF_TYPE_IDE;
+#ifdef CONFIG_ATAPI
+
+	retries = 0;
+
+	/* Warning: This will be tricky to read */
+	while (retries <= 1) {
+		/* check signature */
+		if ((ide_inb(device, ATA_SECT_CNT) == 0x01) &&
+		    (ide_inb(device, ATA_SECT_NUM) == 0x01) &&
+		    (ide_inb(device, ATA_CYL_LOW) == 0x14) &&
+		    (ide_inb(device, ATA_CYL_HIGH) == 0xEB)) {
+			/* ATAPI Signature found */
+			dev_desc->if_type = IF_TYPE_ATAPI;
+			/*
+			 * Start Ident Command
+			 */
+			ide_outb(device, ATA_COMMAND, ATAPI_CMD_IDENT);
+			/*
+			 * Wait for completion - ATAPI devices need more time
+			 * to become ready
+			 */
+			c = ide_wait(device, ATAPI_TIME_OUT);
+		} else
+#endif
+		{
+			/*
+			 * Start Ident Command
+			 */
+			ide_outb(device, ATA_COMMAND, ATA_CMD_IDENT);
+
+			/*
+			 * Wait for completion
+			 */
+			c = ide_wait(device, IDE_TIME_OUT);
+		}
+		ide_led(DEVICE_LED(device), 0);	/* LED off      */
+
+		if (((c & ATA_STAT_DRQ) == 0) ||
+		    ((c & (ATA_STAT_FAULT | ATA_STAT_ERR)) != 0)) {
+#ifdef CONFIG_ATAPI
+			{
+				/*
+				 * Need to soft reset the device
+				 * in case it's an ATAPI...
+				 */
+				debug("Retrying...\n");
+				ide_outb(device, ATA_DEV_HD,
+					 ATA_LBA | ATA_DEVICE(device));
+				udelay(100000);
+				ide_outb(device, ATA_COMMAND, 0x08);
+				udelay(500000);	/* 500 ms */
+			}
+			/*
+			 * Select device
+			 */
+			ide_outb(device, ATA_DEV_HD,
+				 ATA_LBA | ATA_DEVICE(device));
+			retries++;
+#else
+			return;
+#endif
+		}
+#ifdef CONFIG_ATAPI
+		else
+			break;
+	}			/* see above - ugly to read */
+
+	if (retries == 2)	/* Not found */
+		return;
+#endif
+
+	ide_input_swap_data(device, (ulong *)&iop, ATA_SECTORWORDS);
+
+	ident_cpy((unsigned char *) dev_desc->revision, iop.fw_rev,
+		  sizeof(dev_desc->revision));
+	ident_cpy((unsigned char *) dev_desc->vendor, iop.model,
+		  sizeof(dev_desc->vendor));
+	ident_cpy((unsigned char *) dev_desc->product, iop.serial_no,
+		  sizeof(dev_desc->product));
+#ifdef __LITTLE_ENDIAN
+	/*
+	 * firmware revision, model, and serial number have Big Endian Byte
+	 * order in Word. Convert all three to little endian.
+	 *
+	 * See CF+ and CompactFlash Specification Revision 2.0:
+	 * 6.2.1.6: Identify Drive, Table 39 for more details
+	 */
+
+	strswab(dev_desc->revision);
+	strswab(dev_desc->vendor);
+	strswab(dev_desc->product);
+#endif /* __LITTLE_ENDIAN */
+
+	if ((iop.config & 0x0080) == 0x0080)
+		dev_desc->removable = 1;
+	else
+		dev_desc->removable = 0;
+
+#ifdef CONFIG_ATAPI
+	if (dev_desc->if_type == IF_TYPE_ATAPI) {
+		atapi_inquiry(dev_desc);
+		return;
+	}
+#endif /* CONFIG_ATAPI */
+
+#ifdef __BIG_ENDIAN
+	/* swap shorts */
+	dev_desc->lba = (iop.lba_capacity << 16) | (iop.lba_capacity >> 16);
+#else  /* ! __BIG_ENDIAN */
+	/*
+	 * do not swap shorts on little endian
+	 *
+	 * See CF+ and CompactFlash Specification Revision 2.0:
+	 * 6.2.1.6: Identfy Drive, Table 39, Word Address 57-58 for details.
+	 */
+	dev_desc->lba = iop.lba_capacity;
+#endif /* __BIG_ENDIAN */
+
+#ifdef CONFIG_LBA48
+	if (iop.command_set_2 & 0x0400) {	/* LBA 48 support */
+		dev_desc->lba48 = 1;
+		dev_desc->lba = (unsigned long long) iop.lba48_capacity[0] |
+			((unsigned long long) iop.lba48_capacity[1] << 16) |
+			((unsigned long long) iop.lba48_capacity[2] << 32) |
+			((unsigned long long) iop.lba48_capacity[3] << 48);
+	} else {
+		dev_desc->lba48 = 0;
+	}
+#endif /* CONFIG_LBA48 */
+	/* assuming HD */
+	dev_desc->type = DEV_TYPE_HARDDISK;
+	dev_desc->blksz = ATA_BLOCKSIZE;
+	dev_desc->log2blksz = LOG2(dev_desc->blksz);
+	dev_desc->lun = 0;	/* just to fill something in... */
+
+#if 0				/* only used to test the powersaving mode,
+				 * if enabled, the drive goes after 5 sec
+				 * in standby mode */
+	ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
+	c = ide_wait(device, IDE_TIME_OUT);
+	ide_outb(device, ATA_SECT_CNT, 1);
+	ide_outb(device, ATA_LBA_LOW, 0);
+	ide_outb(device, ATA_LBA_MID, 0);
+	ide_outb(device, ATA_LBA_HIGH, 0);
+	ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
+	ide_outb(device, ATA_COMMAND, 0xe3);
+	udelay(50);
+	c = ide_wait(device, IDE_TIME_OUT);	/* can't take over 500 ms */
+#endif
+}
+
+
+/* ------------------------------------------------------------------------- */
+
+ulong ide_read(block_dev_desc_t *block_dev, lbaint_t blknr, lbaint_t blkcnt,
+	       void *buffer)
+{
+	int device = block_dev->dev;
+	ulong n = 0;
+	unsigned char c;
+	unsigned char pwrsave = 0;	/* power save */
+
+#ifdef CONFIG_LBA48
+	unsigned char lba48 = 0;
+
+	if (blknr & 0x0000fffff0000000ULL) {
+		/* more than 28 bits used, use 48bit mode */
+		lba48 = 1;
+	}
+#endif
+	debug("ide_read dev %d start " LBAF ", blocks " LBAF " buffer at %lX\n",
+	      device, blknr, blkcnt, (ulong) buffer);
+
+	ide_led(DEVICE_LED(device), 1);	/* LED on       */
+
+	/* Select device
+	 */
+	ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
+	c = ide_wait(device, IDE_TIME_OUT);
+
+	if (c & ATA_STAT_BUSY) {
+		printf("IDE read: device %d not ready\n", device);
+		goto IDE_READ_E;
+	}
+
+	/* first check if the drive is in Powersaving mode, if yes,
+	 * increase the timeout value */
+	ide_outb(device, ATA_COMMAND, ATA_CMD_CHK_PWR);
+	udelay(50);
+
+	c = ide_wait(device, IDE_TIME_OUT);	/* can't take over 500 ms */
+
+	if (c & ATA_STAT_BUSY) {
+		printf("IDE read: device %d not ready\n", device);
+		goto IDE_READ_E;
+	}
+	if ((c & ATA_STAT_ERR) == ATA_STAT_ERR) {
+		printf("No Powersaving mode %X\n", c);
+	} else {
+		c = ide_inb(device, ATA_SECT_CNT);
+		debug("Powersaving %02X\n", c);
+		if (c == 0)
+			pwrsave = 1;
+	}
+
+
+	while (blkcnt-- > 0) {
+
+		c = ide_wait(device, IDE_TIME_OUT);
+
+		if (c & ATA_STAT_BUSY) {
+			printf("IDE read: device %d not ready\n", device);
+			break;
+		}
+#ifdef CONFIG_LBA48
+		if (lba48) {
+			/* write high bits */
+			ide_outb(device, ATA_SECT_CNT, 0);
+			ide_outb(device, ATA_LBA_LOW, (blknr >> 24) & 0xFF);
+#ifdef CONFIG_SYS_64BIT_LBA
+			ide_outb(device, ATA_LBA_MID, (blknr >> 32) & 0xFF);
+			ide_outb(device, ATA_LBA_HIGH, (blknr >> 40) & 0xFF);
+#else
+			ide_outb(device, ATA_LBA_MID, 0);
+			ide_outb(device, ATA_LBA_HIGH, 0);
+#endif
+		}
+#endif
+		ide_outb(device, ATA_SECT_CNT, 1);
+		ide_outb(device, ATA_LBA_LOW, (blknr >> 0) & 0xFF);
+		ide_outb(device, ATA_LBA_MID, (blknr >> 8) & 0xFF);
+		ide_outb(device, ATA_LBA_HIGH, (blknr >> 16) & 0xFF);
+
+#ifdef CONFIG_LBA48
+		if (lba48) {
+			ide_outb(device, ATA_DEV_HD,
+				 ATA_LBA | ATA_DEVICE(device));
+			ide_outb(device, ATA_COMMAND, ATA_CMD_READ_EXT);
+
+		} else
+#endif
+		{
+			ide_outb(device, ATA_DEV_HD, ATA_LBA |
+				 ATA_DEVICE(device) | ((blknr >> 24) & 0xF));
+			ide_outb(device, ATA_COMMAND, ATA_CMD_READ);
+		}
+
+		udelay(50);
+
+		if (pwrsave) {
+			/* may take up to 4 sec */
+			c = ide_wait(device, IDE_SPIN_UP_TIME_OUT);
+			pwrsave = 0;
+		} else {
+			/* can't take over 500 ms */
+			c = ide_wait(device, IDE_TIME_OUT);
+		}
+
+		if ((c & (ATA_STAT_DRQ | ATA_STAT_BUSY | ATA_STAT_ERR)) !=
+		    ATA_STAT_DRQ) {
+			printf("Error (no IRQ) dev %d blk " LBAF ": status "
+			       "%#02x\n", device, blknr, c);
+			break;
+		}
+
+		ide_input_data(device, buffer, ATA_SECTORWORDS);
+		(void) ide_inb(device, ATA_STATUS);	/* clear IRQ */
+
+		++n;
+		++blknr;
+		buffer += ATA_BLOCKSIZE;
+	}
+IDE_READ_E:
+	ide_led(DEVICE_LED(device), 0);	/* LED off      */
+	return (n);
+}
+
+/* ------------------------------------------------------------------------- */
+
+
+ulong ide_write(block_dev_desc_t *block_dev, lbaint_t blknr, lbaint_t blkcnt,
+		const void *buffer)
+{
+	int device = block_dev->dev;
+	ulong n = 0;
+	unsigned char c;
+
+#ifdef CONFIG_LBA48
+	unsigned char lba48 = 0;
+
+	if (blknr & 0x0000fffff0000000ULL) {
+		/* more than 28 bits used, use 48bit mode */
+		lba48 = 1;
+	}
+#endif
+
+	ide_led(DEVICE_LED(device), 1);	/* LED on       */
+
+	/* Select device
+	 */
+	ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
+
+	while (blkcnt-- > 0) {
+
+		c = ide_wait(device, IDE_TIME_OUT);
+
+		if (c & ATA_STAT_BUSY) {
+			printf("IDE read: device %d not ready\n", device);
+			goto WR_OUT;
+		}
+#ifdef CONFIG_LBA48
+		if (lba48) {
+			/* write high bits */
+			ide_outb(device, ATA_SECT_CNT, 0);
+			ide_outb(device, ATA_LBA_LOW, (blknr >> 24) & 0xFF);
+#ifdef CONFIG_SYS_64BIT_LBA
+			ide_outb(device, ATA_LBA_MID, (blknr >> 32) & 0xFF);
+			ide_outb(device, ATA_LBA_HIGH, (blknr >> 40) & 0xFF);
+#else
+			ide_outb(device, ATA_LBA_MID, 0);
+			ide_outb(device, ATA_LBA_HIGH, 0);
+#endif
+		}
+#endif
+		ide_outb(device, ATA_SECT_CNT, 1);
+		ide_outb(device, ATA_LBA_LOW, (blknr >> 0) & 0xFF);
+		ide_outb(device, ATA_LBA_MID, (blknr >> 8) & 0xFF);
+		ide_outb(device, ATA_LBA_HIGH, (blknr >> 16) & 0xFF);
+
+#ifdef CONFIG_LBA48
+		if (lba48) {
+			ide_outb(device, ATA_DEV_HD,
+				 ATA_LBA | ATA_DEVICE(device));
+			ide_outb(device, ATA_COMMAND, ATA_CMD_WRITE_EXT);
+
+		} else
+#endif
+		{
+			ide_outb(device, ATA_DEV_HD, ATA_LBA |
+				 ATA_DEVICE(device) | ((blknr >> 24) & 0xF));
+			ide_outb(device, ATA_COMMAND, ATA_CMD_WRITE);
+		}
+
+		udelay(50);
+
+		/* can't take over 500 ms */
+		c = ide_wait(device, IDE_TIME_OUT);
+
+		if ((c & (ATA_STAT_DRQ | ATA_STAT_BUSY | ATA_STAT_ERR)) !=
+		    ATA_STAT_DRQ) {
+			printf("Error (no IRQ) dev %d blk " LBAF ": status "
+				"%#02x\n", device, blknr, c);
+			goto WR_OUT;
+		}
+
+		ide_output_data(device, buffer, ATA_SECTORWORDS);
+		c = ide_inb(device, ATA_STATUS);	/* clear IRQ */
+		++n;
+		++blknr;
+		buffer += ATA_BLOCKSIZE;
+	}
+WR_OUT:
+	ide_led(DEVICE_LED(device), 0);	/* LED off      */
+	return (n);
+}
+
+/* ------------------------------------------------------------------------- */
+
+/*
+ * copy src to dest, skipping leading and trailing blanks and null
+ * terminate the string
+ * "len" is the size of available memory including the terminating '\0'
+ */
+static void ident_cpy(unsigned char *dst, unsigned char *src,
+		      unsigned int len)
+{
+	unsigned char *end, *last;
+
+	last = dst;
+	end = src + len - 1;
+
+	/* reserve space for '\0' */
+	if (len < 2)
+		goto OUT;
+
+	/* skip leading white space */
+	while ((*src) && (src < end) && (*src == ' '))
+		++src;
+
+	/* copy string, omitting trailing white space */
+	while ((*src) && (src < end)) {
+		*dst++ = *src;
+		if (*src++ != ' ')
+			last = dst;
+	}
+OUT:
+	*last = '\0';
+}
+
+/* ------------------------------------------------------------------------- */
+
+/*
+ * Wait until Busy bit is off, or timeout (in ms)
+ * Return last status
+ */
+static uchar ide_wait(int dev, ulong t)
+{
+	ulong delay = 10 * t;	/* poll every 100 us */
+	uchar c;
+
+	while ((c = ide_inb(dev, ATA_STATUS)) & ATA_STAT_BUSY) {
+		udelay(100);
+		if (delay-- == 0)
+			break;
+	}
+	return (c);
+}
+
+/* ------------------------------------------------------------------------- */
+
+#ifdef CONFIG_IDE_RESET
+extern void ide_set_reset(int idereset);
+
+static void ide_reset(void)
+{
+	int i;
+
+	curr_device = -1;
+	for (i = 0; i < CONFIG_SYS_IDE_MAXBUS; ++i)
+		ide_bus_ok[i] = 0;
+	for (i = 0; i < CONFIG_SYS_IDE_MAXDEVICE; ++i)
+		ide_dev_desc[i].type = DEV_TYPE_UNKNOWN;
+
+	ide_set_reset(1);	/* assert reset */
+
+	/* the reset signal shall be asserted for et least 25 us */
+	udelay(25);
+
+	WATCHDOG_RESET();
+
+	/* de-assert RESET signal */
+	ide_set_reset(0);
+
+	/* wait 250 ms */
+	for (i = 0; i < 250; ++i)
+		udelay(1000);
+}
+
+#endif /* CONFIG_IDE_RESET */
+
+/* ------------------------------------------------------------------------- */
+
+#if defined(CONFIG_OF_IDE_FIXUP)
+int ide_device_present(int dev)
+{
+	if (dev >= CONFIG_SYS_IDE_MAXBUS)
+		return 0;
+	return (ide_dev_desc[dev].type == DEV_TYPE_UNKNOWN ? 0 : 1);
+}
+#endif
+/* ------------------------------------------------------------------------- */
+
+#ifdef CONFIG_ATAPI
+/****************************************************************************
+ * ATAPI Support
+ */
+
+#if defined(CONFIG_IDE_SWAP_IO)
+/* since ATAPI may use commands with not 4 bytes alligned length
+ * we have our own transfer functions, 2 bytes alligned */
+__weak void ide_output_data_shorts(int dev, ushort *sect_buf, int shorts)
+{
+	ushort *dbuf;
+	volatile ushort *pbuf;
+
+	pbuf = (ushort *) (ATA_CURR_BASE(dev) + ATA_DATA_REG);
+	dbuf = (ushort *) sect_buf;
+
+	debug("in output data shorts base for read is %lx\n",
+	      (unsigned long) pbuf);
+
+	while (shorts--) {
+		EIEIO;
+		*pbuf = *dbuf++;
+	}
+}
+
+__weak void ide_input_data_shorts(int dev, ushort *sect_buf, int shorts)
+{
+	ushort *dbuf;
+	volatile ushort *pbuf;
+
+	pbuf = (ushort *) (ATA_CURR_BASE(dev) + ATA_DATA_REG);
+	dbuf = (ushort *) sect_buf;
+
+	debug("in input data shorts base for read is %lx\n",
+	      (unsigned long) pbuf);
+
+	while (shorts--) {
+		EIEIO;
+		*dbuf++ = *pbuf;
+	}
+}
+
+#else  /* ! CONFIG_IDE_SWAP_IO */
+__weak void ide_output_data_shorts(int dev, ushort *sect_buf, int shorts)
+{
+	outsw(ATA_CURR_BASE(dev) + ATA_DATA_REG, sect_buf, shorts);
+}
+
+__weak void ide_input_data_shorts(int dev, ushort *sect_buf, int shorts)
+{
+	insw(ATA_CURR_BASE(dev) + ATA_DATA_REG, sect_buf, shorts);
+}
+
+#endif /* CONFIG_IDE_SWAP_IO */
+
+/*
+ * Wait until (Status & mask) == res, or timeout (in ms)
+ * Return last status
+ * This is used since some ATAPI CD ROMs clears their Busy Bit first
+ * and then they set their DRQ Bit
+ */
+static uchar atapi_wait_mask(int dev, ulong t, uchar mask, uchar res)
+{
+	ulong delay = 10 * t;	/* poll every 100 us */
+	uchar c;
+
+	/* prevents to read the status before valid */
+	c = ide_inb(dev, ATA_DEV_CTL);
+
+	while (((c = ide_inb(dev, ATA_STATUS)) & mask) != res) {
+		/* break if error occurs (doesn't make sense to wait more) */
+		if ((c & ATA_STAT_ERR) == ATA_STAT_ERR)
+			break;
+		udelay(100);
+		if (delay-- == 0)
+			break;
+	}
+	return (c);
+}
+
+/*
+ * issue an atapi command
+ */
+unsigned char atapi_issue(int device, unsigned char *ccb, int ccblen,
+			  unsigned char *buffer, int buflen)
+{
+	unsigned char c, err, mask, res;
+	int n;
+
+	ide_led(DEVICE_LED(device), 1);	/* LED on       */
+
+	/* Select device
+	 */
+	mask = ATA_STAT_BUSY | ATA_STAT_DRQ;
+	res = 0;
+	ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
+	c = atapi_wait_mask(device, ATAPI_TIME_OUT, mask, res);
+	if ((c & mask) != res) {
+		printf("ATAPI_ISSUE: device %d not ready status %X\n", device,
+		       c);
+		err = 0xFF;
+		goto AI_OUT;
+	}
+	/* write taskfile */
+	ide_outb(device, ATA_ERROR_REG, 0);	/* no DMA, no overlaped */
+	ide_outb(device, ATA_SECT_CNT, 0);
+	ide_outb(device, ATA_SECT_NUM, 0);
+	ide_outb(device, ATA_CYL_LOW, (unsigned char) (buflen & 0xFF));
+	ide_outb(device, ATA_CYL_HIGH,
+		 (unsigned char) ((buflen >> 8) & 0xFF));
+	ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
+
+	ide_outb(device, ATA_COMMAND, ATAPI_CMD_PACKET);
+	udelay(50);
+
+	mask = ATA_STAT_DRQ | ATA_STAT_BUSY | ATA_STAT_ERR;
+	res = ATA_STAT_DRQ;
+	c = atapi_wait_mask(device, ATAPI_TIME_OUT, mask, res);
+
+	if ((c & mask) != res) {	/* DRQ must be 1, BSY 0 */
+		printf("ATAPI_ISSUE: Error (no IRQ) before sending ccb dev %d status 0x%02x\n",
+			device, c);
+		err = 0xFF;
+		goto AI_OUT;
+	}
+
+	/* write command block */
+	ide_output_data_shorts(device, (unsigned short *) ccb, ccblen / 2);
+
+	/* ATAPI Command written wait for completition */
+	udelay(5000);		/* device must set bsy */
+
+	mask = ATA_STAT_DRQ | ATA_STAT_BUSY | ATA_STAT_ERR;
+	/*
+	 * if no data wait for DRQ = 0 BSY = 0
+	 * if data wait for DRQ = 1 BSY = 0
+	 */
+	res = 0;
+	if (buflen)
+		res = ATA_STAT_DRQ;
+	c = atapi_wait_mask(device, ATAPI_TIME_OUT, mask, res);
+	if ((c & mask) != res) {
+		if (c & ATA_STAT_ERR) {
+			err = (ide_inb(device, ATA_ERROR_REG)) >> 4;
+			debug("atapi_issue 1 returned sense key %X status %02X\n",
+				err, c);
+		} else {
+			printf("ATAPI_ISSUE: (no DRQ) after sending ccb (%x)  status 0x%02x\n",
+				ccb[0], c);
+			err = 0xFF;
+		}
+		goto AI_OUT;
+	}
+	n = ide_inb(device, ATA_CYL_HIGH);
+	n <<= 8;
+	n += ide_inb(device, ATA_CYL_LOW);
+	if (n > buflen) {
+		printf("ERROR, transfer bytes %d requested only %d\n", n,
+		       buflen);
+		err = 0xff;
+		goto AI_OUT;
+	}
+	if ((n == 0) && (buflen < 0)) {
+		printf("ERROR, transfer bytes %d requested %d\n", n, buflen);
+		err = 0xff;
+		goto AI_OUT;
+	}
+	if (n != buflen) {
+		debug("WARNING, transfer bytes %d not equal with requested %d\n",
+			n, buflen);
+	}
+	if (n != 0) {		/* data transfer */
+		debug("ATAPI_ISSUE: %d Bytes to transfer\n", n);
+		/* we transfer shorts */
+		n >>= 1;
+		/* ok now decide if it is an in or output */
+		if ((ide_inb(device, ATA_SECT_CNT) & 0x02) == 0) {
+			debug("Write to device\n");
+			ide_output_data_shorts(device,
+				(unsigned short *) buffer, n);
+		} else {
+			debug("Read from device @ %p shorts %d\n", buffer, n);
+			ide_input_data_shorts(device,
+				(unsigned short *) buffer, n);
+		}
+	}
+	udelay(5000);		/* seems that some CD ROMs need this... */
+	mask = ATA_STAT_BUSY | ATA_STAT_ERR;
+	res = 0;
+	c = atapi_wait_mask(device, ATAPI_TIME_OUT, mask, res);
+	if ((c & ATA_STAT_ERR) == ATA_STAT_ERR) {
+		err = (ide_inb(device, ATA_ERROR_REG) >> 4);
+		debug("atapi_issue 2 returned sense key %X status %X\n", err,
+		      c);
+	} else {
+		err = 0;
+	}
+AI_OUT:
+	ide_led(DEVICE_LED(device), 0);	/* LED off      */
+	return (err);
+}
+
+/*
+ * sending the command to atapi_issue. If an status other than good
+ * returns, an request_sense will be issued
+ */
+
+#define ATAPI_DRIVE_NOT_READY	100
+#define ATAPI_UNIT_ATTN		10
+
+unsigned char atapi_issue_autoreq(int device,
+				  unsigned char *ccb,
+				  int ccblen,
+				  unsigned char *buffer, int buflen)
+{
+	unsigned char sense_data[18], sense_ccb[12];
+	unsigned char res, key, asc, ascq;
+	int notready, unitattn;
+
+	unitattn = ATAPI_UNIT_ATTN;
+	notready = ATAPI_DRIVE_NOT_READY;
+
+retry:
+	res = atapi_issue(device, ccb, ccblen, buffer, buflen);
+	if (res == 0)
+		return 0;	/* Ok */
+
+	if (res == 0xFF)
+		return 0xFF;	/* error */
+
+	debug("(auto_req)atapi_issue returned sense key %X\n", res);
+
+	memset(sense_ccb, 0, sizeof(sense_ccb));
+	memset(sense_data, 0, sizeof(sense_data));
+	sense_ccb[0] = ATAPI_CMD_REQ_SENSE;
+	sense_ccb[4] = 18;	/* allocation Length */
+
+	res = atapi_issue(device, sense_ccb, 12, sense_data, 18);
+	key = (sense_data[2] & 0xF);
+	asc = (sense_data[12]);
+	ascq = (sense_data[13]);
+
+	debug("ATAPI_CMD_REQ_SENSE returned %x\n", res);
+	debug(" Sense page: %02X key %02X ASC %02X ASCQ %02X\n",
+	      sense_data[0], key, asc, ascq);
+
+	if ((key == 0))
+		return 0;	/* ok device ready */
+
+	if ((key == 6) || (asc == 0x29) || (asc == 0x28)) { /* Unit Attention */
+		if (unitattn-- > 0) {
+			udelay(200 * 1000);
+			goto retry;
+		}
+		printf("Unit Attention, tried %d\n", ATAPI_UNIT_ATTN);
+		goto error;
+	}
+	if ((asc == 0x4) && (ascq == 0x1)) {
+		/* not ready, but will be ready soon */
+		if (notready-- > 0) {
+			udelay(200 * 1000);
+			goto retry;
+		}
+		printf("Drive not ready, tried %d times\n",
+		       ATAPI_DRIVE_NOT_READY);
+		goto error;
+	}
+	if (asc == 0x3a) {
+		debug("Media not present\n");
+		goto error;
+	}
+
+	printf("ERROR: Unknown Sense key %02X ASC %02X ASCQ %02X\n", key, asc,
+	       ascq);
+error:
+	debug("ERROR Sense key %02X ASC %02X ASCQ %02X\n", key, asc, ascq);
+	return (0xFF);
+}
+
+
+static void atapi_inquiry(block_dev_desc_t *dev_desc)
+{
+	unsigned char ccb[12];	/* Command descriptor block */
+	unsigned char iobuf[64];	/* temp buf */
+	unsigned char c;
+	int device;
+
+	device = dev_desc->dev;
+	dev_desc->type = DEV_TYPE_UNKNOWN;	/* not yet valid */
+	dev_desc->block_read = atapi_read;
+
+	memset(ccb, 0, sizeof(ccb));
+	memset(iobuf, 0, sizeof(iobuf));
+
+	ccb[0] = ATAPI_CMD_INQUIRY;
+	ccb[4] = 40;		/* allocation Legnth */
+	c = atapi_issue_autoreq(device, ccb, 12, (unsigned char *) iobuf, 40);
+
+	debug("ATAPI_CMD_INQUIRY returned %x\n", c);
+	if (c != 0)
+		return;
+
+	/* copy device ident strings */
+	ident_cpy((unsigned char *) dev_desc->vendor, &iobuf[8], 8);
+	ident_cpy((unsigned char *) dev_desc->product, &iobuf[16], 16);
+	ident_cpy((unsigned char *) dev_desc->revision, &iobuf[32], 5);
+
+	dev_desc->lun = 0;
+	dev_desc->lba = 0;
+	dev_desc->blksz = 0;
+	dev_desc->log2blksz = LOG2_INVALID(typeof(dev_desc->log2blksz));
+	dev_desc->type = iobuf[0] & 0x1f;
+
+	if ((iobuf[1] & 0x80) == 0x80)
+		dev_desc->removable = 1;
+	else
+		dev_desc->removable = 0;
+
+	memset(ccb, 0, sizeof(ccb));
+	memset(iobuf, 0, sizeof(iobuf));
+	ccb[0] = ATAPI_CMD_START_STOP;
+	ccb[4] = 0x03;		/* start */
+
+	c = atapi_issue_autoreq(device, ccb, 12, (unsigned char *) iobuf, 0);
+
+	debug("ATAPI_CMD_START_STOP returned %x\n", c);
+	if (c != 0)
+		return;
+
+	memset(ccb, 0, sizeof(ccb));
+	memset(iobuf, 0, sizeof(iobuf));
+	c = atapi_issue_autoreq(device, ccb, 12, (unsigned char *) iobuf, 0);
+
+	debug("ATAPI_CMD_UNIT_TEST_READY returned %x\n", c);
+	if (c != 0)
+		return;
+
+	memset(ccb, 0, sizeof(ccb));
+	memset(iobuf, 0, sizeof(iobuf));
+	ccb[0] = ATAPI_CMD_READ_CAP;
+	c = atapi_issue_autoreq(device, ccb, 12, (unsigned char *) iobuf, 8);
+	debug("ATAPI_CMD_READ_CAP returned %x\n", c);
+	if (c != 0)
+		return;
+
+	debug("Read Cap: LBA %02X%02X%02X%02X blksize %02X%02X%02X%02X\n",
+	      iobuf[0], iobuf[1], iobuf[2], iobuf[3],
+	      iobuf[4], iobuf[5], iobuf[6], iobuf[7]);
+
+	dev_desc->lba = ((unsigned long) iobuf[0] << 24) +
+		((unsigned long) iobuf[1] << 16) +
+		((unsigned long) iobuf[2] << 8) + ((unsigned long) iobuf[3]);
+	dev_desc->blksz = ((unsigned long) iobuf[4] << 24) +
+		((unsigned long) iobuf[5] << 16) +
+		((unsigned long) iobuf[6] << 8) + ((unsigned long) iobuf[7]);
+	dev_desc->log2blksz = LOG2(dev_desc->blksz);
+#ifdef CONFIG_LBA48
+	/* ATAPI devices cannot use 48bit addressing (ATA/ATAPI v7) */
+	dev_desc->lba48 = 0;
+#endif
+	return;
+}
+
+
+/*
+ * atapi_read:
+ * we transfer only one block per command, since the multiple DRQ per
+ * command is not yet implemented
+ */
+#define ATAPI_READ_MAX_BYTES	2048	/* we read max 2kbytes */
+#define ATAPI_READ_BLOCK_SIZE	2048	/* assuming CD part */
+#define ATAPI_READ_MAX_BLOCK	(ATAPI_READ_MAX_BYTES/ATAPI_READ_BLOCK_SIZE)
+
+ulong atapi_read(block_dev_desc_t *block_dev, lbaint_t blknr, lbaint_t blkcnt,
+		 void *buffer)
+{
+	int device = block_dev->dev;
+	ulong n = 0;
+	unsigned char ccb[12];	/* Command descriptor block */
+	ulong cnt;
+
+	debug("atapi_read dev %d start " LBAF " blocks " LBAF " buffer at %lX\n",
+	      device, blknr, blkcnt, (ulong) buffer);
+
+	do {
+		if (blkcnt > ATAPI_READ_MAX_BLOCK)
+			cnt = ATAPI_READ_MAX_BLOCK;
+		else
+			cnt = blkcnt;
+
+		ccb[0] = ATAPI_CMD_READ_12;
+		ccb[1] = 0;	/* reserved */
+		ccb[2] = (unsigned char) (blknr >> 24) & 0xFF;	/* MSB Block */
+		ccb[3] = (unsigned char) (blknr >> 16) & 0xFF;	/*  */
+		ccb[4] = (unsigned char) (blknr >> 8) & 0xFF;
+		ccb[5] = (unsigned char) blknr & 0xFF;	/* LSB Block */
+		ccb[6] = (unsigned char) (cnt >> 24) & 0xFF; /* MSB Block cnt */
+		ccb[7] = (unsigned char) (cnt >> 16) & 0xFF;
+		ccb[8] = (unsigned char) (cnt >> 8) & 0xFF;
+		ccb[9] = (unsigned char) cnt & 0xFF;	/* LSB Block */
+		ccb[10] = 0;	/* reserved */
+		ccb[11] = 0;	/* reserved */
+
+		if (atapi_issue_autoreq(device, ccb, 12,
+					(unsigned char *) buffer,
+					cnt * ATAPI_READ_BLOCK_SIZE)
+		    == 0xFF) {
+			return (n);
+		}
+		n += cnt;
+		blkcnt -= cnt;
+		blknr += cnt;
+		buffer += (cnt * ATAPI_READ_BLOCK_SIZE);
+	} while (blkcnt > 0);
+	return (n);
+}
+
+/* ------------------------------------------------------------------------- */
+
+#endif /* CONFIG_ATAPI */
+
+U_BOOT_CMD(ide, 5, 1, do_ide,
+	   "IDE sub-system",
+	   "reset - reset IDE controller\n"
+	   "ide info  - show available IDE devices\n"
+	   "ide device [dev] - show or set current device\n"
+	   "ide part [dev] - print partition table of one or all IDE devices\n"
+	   "ide read  addr blk# cnt\n"
+	   "ide write addr blk# cnt - read/write `cnt'"
+	   " blocks starting at block `blk#'\n"
+	   "    to/from memory address `addr'");
+
+U_BOOT_CMD(diskboot, 3, 1, do_diskboot,
+	   "boot from IDE device", "loadAddr dev:part");