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u-boot/common/cmd_ide.c
Egbert Eich 0472fbfd32 part/dev_desc: Add log2 of blocksize to block_dev_desc data struct 
log2 of the device block size serves as the shift value used to calculate
the block number to read in file systems when implementing avaiable block
sizes.
It is needed quite often in file systems thus it is pre-calculated and
stored in the block device descriptor.

Signed-off-by: Egbert Eich <eich@suse.com>
2013-05-01 16:24:02 -04:00

1575 lines
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/*
* (C) Copyright 2000-2011
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
*/
/*
* 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(int device, ulong 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);
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
n = ide_dev_desc[curr_device].block_read(curr_device,
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(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);
}
/* ------------------------------------------------------------------------- */
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
}
void ide_led(uchar led, uchar status)
__attribute__ ((weak, alias("__ide_led")));
#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
/* ------------------------------------------------------------------------- */
inline 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
}
void ide_outb(int dev, int port, unsigned char val)
__attribute__ ((weak, alias("__ide_outb")));
inline 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;
}
unsigned char ide_inb(int dev, int port)
__attribute__ ((weak, alias("__ide_inb")));
#ifdef CONFIG_TUNE_PIO
inline int __ide_set_piomode(int pio_mode)
{
return 0;
}
inline int ide_set_piomode(int pio_mode)
__attribute__ ((weak, alias("__ide_set_piomode")));
#endif
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
/* ------------------------------------------------------------------------- */
void ide_input_swap_data(int dev, ulong *sect_buf, int words)
__attribute__ ((weak, alias("__ide_input_swap_data")));
void ide_input_data(int dev, ulong *sect_buf, int words)
__attribute__ ((weak, alias("__ide_input_data")));
void ide_output_data(int dev, const ulong *sect_buf, int words)
__attribute__ ((weak, alias("__ide_output_data")));
/* We only need to swap data if we are running on a big endian cpu. */
#if defined(__LITTLE_ENDIAN)
void __ide_input_swap_data(int dev, ulong *sect_buf, int words)
{
ide_input_data(dev, sect_buf, words);
}
#else
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)
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 */
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)
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 */
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
#ifdef CONFIG_TUNE_PIO
int pio_mode;
#endif
#if 0
int mode, cycle_time;
#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_TUNE_PIO
/* Mode 0 - 2 only, are directly determined by word 51. */
pio_mode = iop.tPIO;
if (pio_mode > 2) {
printf("WARNING: Invalid PIO (word 51 = %d).\n", pio_mode);
/* Force it to dead slow, and hope for the best... */
pio_mode = 0;
}
/* Any CompactFlash Storage Card that supports PIO mode 3 or above
* shall set bit 1 of word 53 to one and support the fields contained
* in words 64 through 70.
*/
if (iop.field_valid & 0x02) {
/*
* Mode 3 and above are possible. Check in order from slow
* to fast, so we wind up with the highest mode allowed.
*/
if (iop.eide_pio_modes & 0x01)
pio_mode = 3;
if (iop.eide_pio_modes & 0x02)
pio_mode = 4;
if (ata_id_is_cfa((u16 *)&iop)) {
if ((iop.cf_advanced_caps & 0x07) == 0x01)
pio_mode = 5;
if ((iop.cf_advanced_caps & 0x07) == 0x02)
pio_mode = 6;
}
}
/* System-specific, depends on bus speeds, etc. */
ide_set_piomode(pio_mode);
#endif /* CONFIG_TUNE_PIO */
#if 0
/*
* Drive PIO mode autoselection
*/
mode = iop.tPIO;
printf("tPIO = 0x%02x = %d\n", mode, mode);
if (mode > 2) { /* 2 is maximum allowed tPIO value */
mode = 2;
debug("Override tPIO -> 2\n");
}
if (iop.field_valid & 2) { /* drive implements ATA2? */
debug("Drive implements ATA2\n");
if (iop.capability & 8) { /* drive supports use_iordy? */
cycle_time = iop.eide_pio_iordy;
} else {
cycle_time = iop.eide_pio;
}
debug("cycle time = %d\n", cycle_time);
mode = 4;
if (cycle_time > 120)
mode = 3; /* 120 ns for PIO mode 4 */
if (cycle_time > 180)
mode = 2; /* 180 ns for PIO mode 3 */
if (cycle_time > 240)
mode = 1; /* 240 ns for PIO mode 4 */
if (cycle_time > 383)
mode = 0; /* 383 ns for PIO mode 4 */
}
printf("PIO mode to use: PIO %d\n", mode);
#endif /* 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(int device, ulong blknr, lbaint_t blkcnt, void *buffer)
{
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 %lX, 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 %ld: 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(int device, ulong blknr, lbaint_t blkcnt, const void *buffer)
{
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 %ld: 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
*/
void ide_input_data_shorts(int dev, ushort *sect_buf, int shorts)
__attribute__ ((weak, alias("__ide_input_data_shorts")));
void ide_output_data_shorts(int dev, ushort *sect_buf, int shorts)
__attribute__ ((weak, alias("__ide_output_data_shorts")));
#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 */
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++;
}
}
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 */
void __ide_output_data_shorts(int dev, ushort *sect_buf, int shorts)
{
outsw(ATA_CURR_BASE(dev) + ATA_DATA_REG, sect_buf, shorts);
}
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(int device, ulong blknr, lbaint_t blkcnt, void *buffer)
{
ulong n = 0;
unsigned char ccb[12]; /* Command descriptor block */
ulong cnt;
debug("atapi_read dev %d start %lX, 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");
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