diff options
Diffstat (limited to 'cmd/ide.c')
| -rw-r--r-- | cmd/ide.c | 1457 |
1 files changed, 1457 insertions, 0 deletions
diff --git a/cmd/ide.c b/cmd/ide.c new file mode 100644 index 0000000..f19a7ce --- /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"); |