/* * (C) Copyright 2000-2011 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * * SPDX-License-Identifier: GPL-2.0+ */ /* * IDE support */ #include #include #include #include #include #include #include #if defined(CONFIG_IDE_8xx_DIRECT) || defined(CONFIG_IDE_PCMCIA) # include #endif #include #include #ifdef CONFIG_STATUS_LED # include #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]; struct blk_desc 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(struct blk_desc *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(struct blk_desc *dev_desc); static ulong atapi_read(struct blk_desc *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'); part_print(&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) { part_print(&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); struct blk_desc *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 */ part_init(&ide_dev_desc[i]); if (curr_device < 0) curr_device = i; } } WATCHDOG_RESET(); } /* ------------------------------------------------------------------------- */ #ifdef CONFIG_PARTITIONS struct blk_desc *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(struct blk_desc *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(struct blk_desc *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(struct blk_desc *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(struct blk_desc *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(struct blk_desc *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");