31 files changed, 63 insertions, 1 deletions

diff --git a/drivers/mtd/devices/doc2000.c b/drivers/mtd/devices/doc2000.c
index 7ad7b054800c..a4eb8b5b85ec 100644
--- a/drivers/mtd/devices/doc2000.c
+++ b/drivers/mtd/devices/doc2000.c
@@ -564,6 +564,7 @@ void DoC2k_init(struct mtd_info *mtd)
         mtd->flags = MTD_CAP_NANDFLASH;
         mtd->writebufsize = mtd->writesize = 512;
         mtd->oobsize = 16;
+        mtd->ecc_strength = 2;
         mtd->owner = THIS_MODULE;
         mtd->_erase = doc_erase;
         mtd->_read = doc_read;
diff --git a/drivers/mtd/devices/doc2001.c b/drivers/mtd/devices/doc2001.c
index 7bff54e62cd5..f6927955dab0 100644
--- a/drivers/mtd/devices/doc2001.c
+++ b/drivers/mtd/devices/doc2001.c
@@ -348,6 +348,7 @@ void DoCMil_init(struct mtd_info *mtd)
         mtd->erasesize = 0x2000;
         mtd->writebufsize = mtd->writesize = 512;
         mtd->oobsize = 16;
+        mtd->ecc_strength = 2;
         mtd->owner = THIS_MODULE;
         mtd->_erase = doc_erase;
         mtd->_read = doc_read;
diff --git a/drivers/mtd/devices/doc2001plus.c b/drivers/mtd/devices/doc2001plus.c
index 4a03d869ad03..04eb2e4aa50f 100644
--- a/drivers/mtd/devices/doc2001plus.c
+++ b/drivers/mtd/devices/doc2001plus.c
@@ -469,6 +469,7 @@ void DoCMilPlus_init(struct mtd_info *mtd)
         mtd->flags = MTD_CAP_NANDFLASH;
         mtd->writebufsize = mtd->writesize = 512;
         mtd->oobsize = 16;
+        mtd->ecc_strength = 2;
         mtd->owner = THIS_MODULE;
         mtd->_erase = doc_erase;
         mtd->_read = doc_read;
diff --git a/drivers/mtd/devices/docg3.c b/drivers/mtd/devices/docg3.c
index 2c1d0fca6757..349bbfa74d0d 100644
--- a/drivers/mtd/devices/docg3.c
+++ b/drivers/mtd/devices/docg3.c
@@ -1832,6 +1832,7 @@ static void __init doc_set_driver_info(int chip_id, struct mtd_info *mtd)
         mtd->_write_oob = doc_write_oob;
         mtd->_block_isbad = doc_block_isbad;
         mtd->ecclayout = &docg3_oobinfo;
+        mtd->ecc_strength = DOC_ECC_BCH_T;
 }
 
 /**
diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c
index 226d28a618d8..9651c06de0a9 100644
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -516,6 +516,7 @@ static struct mtd_part *allocate_partition(struct mtd_info *master,
         }
 
         slave->mtd.ecclayout = master->ecclayout;
+        slave->mtd.ecc_strength = master->ecc_strength;
         if (master->_block_isbad) {
                 uint64_t offs = 0;
 
diff --git a/drivers/mtd/nand/alauda.c b/drivers/mtd/nand/alauda.c
index ac38f73fde3b..4f20e1d8bef1 100644
--- a/drivers/mtd/nand/alauda.c
+++ b/drivers/mtd/nand/alauda.c
@@ -591,6 +591,7 @@ static int alauda_init_media(struct alauda *al)
         mtd->_block_isbad = alauda_isbad;
         mtd->priv = al;
         mtd->owner = THIS_MODULE;
+        mtd->ecc_strength = 1;
 
         err = mtd_device_register(mtd, NULL, 0);
         if (err) {
diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c
index 7769519a54a7..662abf08061a 100644
--- a/drivers/mtd/nand/atmel_nand.c
+++ b/drivers/mtd/nand/atmel_nand.c
@@ -554,6 +554,7 @@ static int __init atmel_nand_probe(struct platform_device *pdev)
                 nand_chip->ecc.hwctl = atmel_nand_hwctl;
                 nand_chip->ecc.read_page = atmel_nand_read_page;
                 nand_chip->ecc.bytes = 4;
+                nand_chip->ecc.strength = 1;
         }
 
         nand_chip->chip_delay = 20;             /* 20us command delay time */
diff --git a/drivers/mtd/nand/bcm_umi_nand.c b/drivers/mtd/nand/bcm_umi_nand.c
index ee81b6333f6a..fc600431f519 100644
--- a/drivers/mtd/nand/bcm_umi_nand.c
+++ b/drivers/mtd/nand/bcm_umi_nand.c
@@ -476,6 +476,14 @@ static int __devinit bcm_umi_nand_probe(struct platform_device *pdev)
                         largepage_bbt.options = NAND_BBT_SCAN2NDPAGE;
                 this->badblock_pattern = &largepage_bbt;
         }
+
+        /*
+         * FIXME: ecc strength value of 6 bits per 512 bytes of data is a
+         * conservative guess, given 13 ecc bytes and using bch alg.
+         * (Assume Galois field order m=15 to allow a margin of error.)
+         */
+        this->ecc.strength = 6;
+
 #endif
 
         /* Now finish off the scan, now that ecc.layout has been initialized. */
diff --git a/drivers/mtd/nand/bf5xx_nand.c b/drivers/mtd/nand/bf5xx_nand.c
index dd899cb5d366..d7b86b925de5 100644
--- a/drivers/mtd/nand/bf5xx_nand.c
+++ b/drivers/mtd/nand/bf5xx_nand.c
@@ -702,9 +702,11 @@ static int bf5xx_nand_scan(struct mtd_info *mtd)
                 if (likely(mtd->writesize >= 512)) {
                         chip->ecc.size = 512;
                         chip->ecc.bytes = 6;
+                        chip->ecc.strength = 2;
                 } else {
                         chip->ecc.size = 256;
                         chip->ecc.bytes = 3;
+                        chip->ecc.strength = 1;
                         bfin_write_NFC_CTL(bfin_read_NFC_CTL() & ~(1 << NFC_PG_SIZE_OFFSET));
                         SSYNC();
                 }
diff --git a/drivers/mtd/nand/cafe_nand.c b/drivers/mtd/nand/cafe_nand.c
index c23c07c5b391..2a96e1a12062 100644
--- a/drivers/mtd/nand/cafe_nand.c
+++ b/drivers/mtd/nand/cafe_nand.c
@@ -783,6 +783,7 @@ static int __devinit cafe_nand_probe(struct pci_dev *pdev,
         cafe->nand.ecc.mode = NAND_ECC_HW_SYNDROME;
         cafe->nand.ecc.size = mtd->writesize;
         cafe->nand.ecc.bytes = 14;
+        cafe->nand.ecc.strength = 4;
         cafe->nand.ecc.hwctl  = (void *)cafe_nand_bug;
         cafe->nand.ecc.calculate = (void *)cafe_nand_bug;
         cafe->nand.ecc.correct  = (void *)cafe_nand_bug;
diff --git a/drivers/mtd/nand/cs553x_nand.c b/drivers/mtd/nand/cs553x_nand.c
index e2b7c9e4c5c2..821c34c62500 100644
--- a/drivers/mtd/nand/cs553x_nand.c
+++ b/drivers/mtd/nand/cs553x_nand.c
@@ -248,6 +248,8 @@ static int __init cs553x_init_one(int cs, int mmio, unsigned long adr)
                 goto out_ior;
         }
 
+        this->ecc.strength = 1;
+
         new_mtd->name = kasprintf(GFP_KERNEL, "cs553x_nand_cs%d", cs);
 
         cs553x_mtd[cs] = new_mtd;
diff --git a/drivers/mtd/nand/davinci_nand.c b/drivers/mtd/nand/davinci_nand.c
index b81afc748fff..d94b03c207af 100644
--- a/drivers/mtd/nand/davinci_nand.c
+++ b/drivers/mtd/nand/davinci_nand.c
@@ -641,6 +641,7 @@ static int __init nand_davinci_probe(struct platform_device *pdev)
                         info->chip.ecc.bytes = 3;
                 }
                 info->chip.ecc.size = 512;
+                info->chip.ecc.strength = pdata->ecc_bits;
                 break;
         default:
                 ret = -EINVAL;
diff --git a/drivers/mtd/nand/denali.c b/drivers/mtd/nand/denali.c
index 3984d488f9ab..a9e57d686297 100644
--- a/drivers/mtd/nand/denali.c
+++ b/drivers/mtd/nand/denali.c
@@ -1590,6 +1590,7 @@ static int denali_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
                         ECC_15BITS * (denali->mtd.writesize /
                         ECC_SECTOR_SIZE)))) {
                 /* if MLC OOB size is large enough, use 15bit ECC*/
+                denali->nand.ecc.strength = 15;
                 denali->nand.ecc.layout = &nand_15bit_oob;
                 denali->nand.ecc.bytes = ECC_15BITS;
                 iowrite32(15, denali->flash_reg + ECC_CORRECTION);
@@ -1600,12 +1601,14 @@ static int denali_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
                                 " contain 8bit ECC correction codes");
                 goto failed_req_irq;
         } else {
+                denali->nand.ecc.strength = 8;
                 denali->nand.ecc.layout = &nand_8bit_oob;
                 denali->nand.ecc.bytes = ECC_8BITS;
                 iowrite32(8, denali->flash_reg + ECC_CORRECTION);
         }
 
         denali->nand.ecc.bytes *= denali->devnum;
+        denali->nand.ecc.strength *= denali->devnum;
         denali->nand.ecc.layout->eccbytes *=
                 denali->mtd.writesize / ECC_SECTOR_SIZE;
         denali->nand.ecc.layout->oobfree[0].offset =
diff --git a/drivers/mtd/nand/diskonchip.c b/drivers/mtd/nand/diskonchip.c
index df921e7a496c..e2ca067631cf 100644
--- a/drivers/mtd/nand/diskonchip.c
+++ b/drivers/mtd/nand/diskonchip.c
@@ -1653,6 +1653,7 @@ static int __init doc_probe(unsigned long physadr)
         nand->ecc.mode          = NAND_ECC_HW_SYNDROME;
         nand->ecc.size          = 512;
         nand->ecc.bytes         = 6;
+        nand->ecc.strength      = 2;
         nand->bbt_options       = NAND_BBT_USE_FLASH;
 
         doc->physadr            = physadr;
diff --git a/drivers/mtd/nand/docg4.c b/drivers/mtd/nand/docg4.c
index 9b3a64904668..b08202664543 100644
--- a/drivers/mtd/nand/docg4.c
+++ b/drivers/mtd/nand/docg4.c
@@ -1191,6 +1191,7 @@ static void __init init_mtd_structs(struct mtd_info *mtd)
         nand->ecc.size = DOCG4_PAGE_SIZE;
         nand->ecc.prepad = 8;
         nand->ecc.bytes = 8;
+        nand->ecc.strength = DOCG4_T;
         nand->options =
                 NAND_BUSWIDTH_16 | NAND_NO_SUBPAGE_WRITE | NAND_NO_AUTOINCR;
         nand->IO_ADDR_R = nand->IO_ADDR_W = doc->virtadr + DOC_IOSPACE_DATA;
diff --git a/drivers/mtd/nand/fsl_elbc_nand.c b/drivers/mtd/nand/fsl_elbc_nand.c
index 7195ee6efe12..80b5264f0a32 100644
--- a/drivers/mtd/nand/fsl_elbc_nand.c
+++ b/drivers/mtd/nand/fsl_elbc_nand.c
@@ -813,6 +813,12 @@ static int fsl_elbc_chip_init(struct fsl_elbc_mtd *priv)
                                 &fsl_elbc_oob_sp_eccm1 : &fsl_elbc_oob_sp_eccm0;
                 chip->ecc.size = 512;
                 chip->ecc.bytes = 3;
+                chip->ecc.strength = 1;
+                /*
+                 * FIXME: can hardware ecc correct 4 bitflips if page size is
+                 * 2k?  Then does hardware report number of corrections for this
+                 * case?  If so, ecc_stats reporting needs to be fixed as well.
+                 */
         } else {
                 /* otherwise fall back to default software ECC */
                 chip->ecc.mode = NAND_ECC_SOFT;
diff --git a/drivers/mtd/nand/fsmc_nand.c b/drivers/mtd/nand/fsmc_nand.c
index 341086c22e90..588e3733c3a4 100644
--- a/drivers/mtd/nand/fsmc_nand.c
+++ b/drivers/mtd/nand/fsmc_nand.c
@@ -863,10 +863,12 @@ static int __init fsmc_nand_probe(struct platform_device *pdev)
                 nand->ecc.calculate = fsmc_read_hwecc_ecc4;
                 nand->ecc.correct = fsmc_bch8_correct_data;
                 nand->ecc.bytes = 13;
+                nand->ecc.strength = 8;
         } else {
                 nand->ecc.calculate = fsmc_read_hwecc_ecc1;
                 nand->ecc.correct = nand_correct_data;
                 nand->ecc.bytes = 3;
+                nand->ecc.strength = 1;
         }
 
         /*
diff --git a/drivers/mtd/nand/jz4740_nand.c b/drivers/mtd/nand/jz4740_nand.c
index cc50e35cdc3d..e4147e8acb7c 100644
--- a/drivers/mtd/nand/jz4740_nand.c
+++ b/drivers/mtd/nand/jz4740_nand.c
@@ -332,6 +332,11 @@ static int __devinit jz_nand_probe(struct platform_device *pdev)
         chip->ecc.mode          = NAND_ECC_HW_OOB_FIRST;
         chip->ecc.size          = 512;
         chip->ecc.bytes         = 9;
+        chip->ecc.strength      = 2;
+        /*
+         * FIXME: ecc_strength value of 2 bits per 512 bytes of data is a
+         * conservative guess, given 9 ecc bytes and reed-solomon alg.
+         */
 
         if (pdata)
                 chip->ecc.layout = pdata->ecc_layout;
diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c
index 3c4c0533191d..cc0678a967c1 100644
--- a/drivers/mtd/nand/mxc_nand.c
+++ b/drivers/mtd/nand/mxc_nand.c
@@ -1225,6 +1225,13 @@ static int __init mxcnd_probe(struct platform_device *pdev)
                 goto escan;
         }
 
+        if (this->ecc.mode == NAND_ECC_HW) {
+                if (nfc_is_v1())
+                        this->ecc.strength = 1;
+                else
+                        this->ecc.strength = (host->eccsize == 4) ? 4 : 8;
+        }
+
         /* Register the partitions */
         mtd_device_parse_register(mtd, part_probes, NULL, pdata->parts,
                                   pdata->nr_parts);
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 1e907dc8638a..8008853756c9 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -3350,6 +3350,7 @@ int nand_scan_tail(struct mtd_info *mtd)
                 if (!chip->ecc.size)
                         chip->ecc.size = 256;
                 chip->ecc.bytes = 3;
+                chip->ecc.strength = 1;
                 break;
 
         case NAND_ECC_SOFT_BCH:
@@ -3384,6 +3385,8 @@ int nand_scan_tail(struct mtd_info *mtd)
                         pr_warn("BCH ECC initialization failed!\n");
                         BUG();
                 }
+                chip->ecc.strength =
+                        chip->ecc.bytes*8 / fls(8*chip->ecc.size);
                 break;
 
         case NAND_ECC_NONE:
@@ -3397,6 +3400,7 @@ int nand_scan_tail(struct mtd_info *mtd)
                 chip->ecc.write_oob = nand_write_oob_std;
                 chip->ecc.size = mtd->writesize;
                 chip->ecc.bytes = 0;
+                chip->ecc.strength = 0;
                 break;
 
         default:
@@ -3478,8 +3482,9 @@ int nand_scan_tail(struct mtd_info *mtd)
         mtd->_block_markbad = nand_block_markbad;
         mtd->writebufsize = mtd->writesize;
 
-        /* propagate ecc.layout to mtd_info */
+        /* propagate ecc info to mtd_info */
         mtd->ecclayout = chip->ecc.layout;
+        mtd->ecc_strength = chip->ecc.strength * chip->ecc.steps;
 
         /* Check, if we should skip the bad block table scan */
         if (chip->options & NAND_SKIP_BBTSCAN)
diff --git a/drivers/mtd/nand/ndfc.c b/drivers/mtd/nand/ndfc.c
index ec688548c880..2b6f632cf274 100644
--- a/drivers/mtd/nand/ndfc.c
+++ b/drivers/mtd/nand/ndfc.c
@@ -179,6 +179,7 @@ static int ndfc_chip_init(struct ndfc_controller *ndfc,
         chip->ecc.mode = NAND_ECC_HW;
         chip->ecc.size = 256;
         chip->ecc.bytes = 3;
+        chip->ecc.strength = 1;
         chip->priv = ndfc;
 
         ndfc->mtd.priv = chip;
diff --git a/drivers/mtd/nand/omap2.c b/drivers/mtd/nand/omap2.c
index d2e7a7da81f8..c2b0bba9d8b3 100644
--- a/drivers/mtd/nand/omap2.c
+++ b/drivers/mtd/nand/omap2.c
@@ -1058,6 +1058,7 @@ static int __devinit omap_nand_probe(struct platform_device *pdev)
                 (pdata->ecc_opt == OMAP_ECC_HAMMING_CODE_HW_ROMCODE)) {
                 info->nand.ecc.bytes            = 3;
                 info->nand.ecc.size             = 512;
+                info->nand.ecc.strength         = 1;
                 info->nand.ecc.calculate        = omap_calculate_ecc;
                 info->nand.ecc.hwctl            = omap_enable_hwecc;
                 info->nand.ecc.correct          = omap_correct_data;
diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c
index d3bdc909c939..def50caa6f84 100644
--- a/drivers/mtd/nand/pxa3xx_nand.c
+++ b/drivers/mtd/nand/pxa3xx_nand.c
@@ -1002,6 +1002,7 @@ static int pxa3xx_nand_scan(struct mtd_info *mtd)
 KEEP_CONFIG:
         chip->ecc.mode = NAND_ECC_HW;
         chip->ecc.size = host->page_size;
+        chip->ecc.strength = 1;
 
         chip->options = NAND_NO_AUTOINCR;
         chip->options |= NAND_NO_READRDY;
diff --git a/drivers/mtd/nand/r852.c b/drivers/mtd/nand/r852.c
index 769a4e096b3c..c2040187c813 100644
--- a/drivers/mtd/nand/r852.c
+++ b/drivers/mtd/nand/r852.c
@@ -891,6 +891,7 @@ int  r852_probe(struct pci_dev *pci_dev, const struct pci_device_id *id)
         chip->ecc.mode = NAND_ECC_HW_SYNDROME;
         chip->ecc.size = R852_DMA_LEN;
         chip->ecc.bytes = SM_OOB_SIZE;
+        chip->ecc.strength = 2;
         chip->ecc.hwctl = r852_ecc_hwctl;
         chip->ecc.calculate = r852_ecc_calculate;
         chip->ecc.correct = r852_ecc_correct;
diff --git a/drivers/mtd/nand/rtc_from4.c b/drivers/mtd/nand/rtc_from4.c
index f309addc2fa0..e55b5cfbe145 100644
--- a/drivers/mtd/nand/rtc_from4.c
+++ b/drivers/mtd/nand/rtc_from4.c
@@ -527,6 +527,7 @@ static int __init rtc_from4_init(void)
         this->ecc.mode = NAND_ECC_HW_SYNDROME;
         this->ecc.size = 512;
         this->ecc.bytes = 8;
+        this->ecc.strength = 3;
         /* return the status of extra status and ECC checks */
         this->errstat = rtc_from4_errstat;
         /* set the nand_oobinfo to support FPGA H/W error detection */
diff --git a/drivers/mtd/nand/s3c2410.c b/drivers/mtd/nand/s3c2410.c
index 97623be04e0f..91121f33f743 100644
--- a/drivers/mtd/nand/s3c2410.c
+++ b/drivers/mtd/nand/s3c2410.c
@@ -823,6 +823,7 @@ static void s3c2410_nand_init_chip(struct s3c2410_nand_info *info,
                 chip->ecc.calculate = s3c2410_nand_calculate_ecc;
                 chip->ecc.correct   = s3c2410_nand_correct_data;
                 chip->ecc.mode      = NAND_ECC_HW;
+                chip->ecc.strength  = 1;
 
                 switch (info->cpu_type) {
                 case TYPE_S3C2410:
diff --git a/drivers/mtd/nand/sh_flctl.c b/drivers/mtd/nand/sh_flctl.c
index 2ee9a1b50a22..e9b2b260de3a 100644
--- a/drivers/mtd/nand/sh_flctl.c
+++ b/drivers/mtd/nand/sh_flctl.c
@@ -825,6 +825,7 @@ static int flctl_chip_init_tail(struct mtd_info *mtd)
 
                 chip->ecc.size = 512;
                 chip->ecc.bytes = 10;
+                chip->ecc.strength = 4;
                 chip->ecc.read_page = flctl_read_page_hwecc;
                 chip->ecc.write_page = flctl_write_page_hwecc;
                 chip->ecc.mode = NAND_ECC_HW;
diff --git a/drivers/mtd/nand/sharpsl.c b/drivers/mtd/nand/sharpsl.c
index 2d269a53f8bb..3421e3762a5a 100644
--- a/drivers/mtd/nand/sharpsl.c
+++ b/drivers/mtd/nand/sharpsl.c
@@ -167,6 +167,7 @@ static int __devinit sharpsl_nand_probe(struct platform_device *pdev)
         this->ecc.mode = NAND_ECC_HW;
         this->ecc.size = 256;
         this->ecc.bytes = 3;
+        this->ecc.strength = 1;
         this->badblock_pattern = data->badblock_pattern;
         this->ecc.layout = data->ecc_layout;
         this->ecc.hwctl = sharpsl_nand_enable_hwecc;
diff --git a/drivers/mtd/nand/tmio_nand.c b/drivers/mtd/nand/tmio_nand.c
index 060848a91db7..5aa518081c51 100644
--- a/drivers/mtd/nand/tmio_nand.c
+++ b/drivers/mtd/nand/tmio_nand.c
@@ -430,6 +430,7 @@ static int tmio_probe(struct platform_device *dev)
         nand_chip->ecc.mode = NAND_ECC_HW;
         nand_chip->ecc.size = 512;
         nand_chip->ecc.bytes = 6;
+        nand_chip->ecc.strength = 2;
         nand_chip->ecc.hwctl = tmio_nand_enable_hwecc;
         nand_chip->ecc.calculate = tmio_nand_calculate_ecc;
         nand_chip->ecc.correct = tmio_nand_correct_data;
diff --git a/drivers/mtd/nand/txx9ndfmc.c b/drivers/mtd/nand/txx9ndfmc.c
index 8db0acbae6fa..26398dcf21cf 100644
--- a/drivers/mtd/nand/txx9ndfmc.c
+++ b/drivers/mtd/nand/txx9ndfmc.c
@@ -356,6 +356,7 @@ static int __init txx9ndfmc_probe(struct platform_device *dev)
                 /* txx9ndfmc_nand_scan will overwrite ecc.size and ecc.bytes */
                 chip->ecc.size = 256;
                 chip->ecc.bytes = 3;
+                chip->ecc.strength = 1;
                 chip->chip_delay = 100;
                 chip->controller = &drvdata->hw_control;
 
diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c
index a1592cf755f3..3d781b87b358 100644
--- a/drivers/mtd/onenand/onenand_base.c
+++ b/drivers/mtd/onenand/onenand_base.c
@@ -4080,6 +4080,7 @@ int onenand_scan(struct mtd_info *mtd, int maxchips)
         mtd->oobavail = this->ecclayout->oobavail;
 
         mtd->ecclayout = this->ecclayout;
+        mtd->ecc_strength = 1;
 
         /* Fill in remaining MTD driver data */
         mtd->type = ONENAND_IS_MLC(this) ? MTD_MLCNANDFLASH : MTD_NANDFLASH;