diff options
| -rw-r--r-- | drivers/mtd/nand/raw/mxs_nand.c | 116 | ||||
| -rw-r--r-- | include/mxs_nand.h | 22 |
2 files changed, 138 insertions, 0 deletions
diff --git a/drivers/mtd/nand/raw/mxs_nand.c b/drivers/mtd/nand/raw/mxs_nand.c index a41b9620d0..ad7b644886 100644 --- a/drivers/mtd/nand/raw/mxs_nand.c +++ b/drivers/mtd/nand/raw/mxs_nand.c @@ -740,6 +740,19 @@ static int mxs_nand_ecc_write_page(struct mtd_info *mtd, d->cmd.pio_words[4] = (dma_addr_t)nand_info->data_buf; d->cmd.pio_words[5] = (dma_addr_t)nand_info->oob_buf; + if (is_mx7() && nand_info->en_randomizer) { + d->cmd.pio_words[2] |= GPMI_ECCCTRL_RANDOMIZER_ENABLE | + GPMI_ECCCTRL_RANDOMIZER_TYPE2; + /* + * Write NAND page number needed to be randomized + * to GPMI_ECCCOUNT register. + * + * The value is between 0-255. For additional details + * check 9.6.6.4 of i.MX7D Applications Processor reference + */ + d->cmd.pio_words[3] |= (page % 255) << 16; + } + mxs_dma_desc_append(channel, d); /* Flush caches */ @@ -1003,6 +1016,10 @@ int mxs_nand_setup_ecc(struct mtd_info *mtd) uint32_t tmp; int ret; + nand_info->en_randomizer = 0; + nand_info->oobsize = mtd->oobsize; + nand_info->writesize = mtd->writesize; + ret = mxs_nand_set_geometry(mtd, geo); if (ret) return ret; @@ -1020,6 +1037,7 @@ int mxs_nand_setup_ecc(struct mtd_info *mtd) tmp |= (geo->gf_len == 14 ? 1 : 0) << BCH_FLASHLAYOUT0_GF13_0_GF14_1_OFFSET; writel(tmp, &bch_regs->hw_bch_flash0layout0); + nand_info->bch_flash0layout0 = tmp; tmp = (mtd->writesize + mtd->oobsize) << BCH_FLASHLAYOUT1_PAGE_SIZE_OFFSET; @@ -1028,6 +1046,7 @@ int mxs_nand_setup_ecc(struct mtd_info *mtd) tmp |= (geo->gf_len == 14 ? 1 : 0) << BCH_FLASHLAYOUT1_GF13_0_GF14_1_OFFSET; writel(tmp, &bch_regs->hw_bch_flash0layout1); + nand_info->bch_flash0layout1 = tmp; /* Set *all* chip selects to use layout 0 */ writel(0, &bch_regs->hw_bch_layoutselect); @@ -1303,3 +1322,100 @@ err: free(nand_info); } #endif + +/* + * Read NAND layout for FCB block generation. + */ +void mxs_nand_get_layout(struct mtd_info *mtd, struct mxs_nand_layout *l) +{ + struct mxs_bch_regs *bch_regs = (struct mxs_bch_regs *)MXS_BCH_BASE; + u32 tmp; + + tmp = readl(&bch_regs->hw_bch_flash0layout0); + l->nblocks = (tmp & BCH_FLASHLAYOUT0_NBLOCKS_MASK) >> + BCH_FLASHLAYOUT0_NBLOCKS_OFFSET; + l->meta_size = (tmp & BCH_FLASHLAYOUT0_META_SIZE_MASK) >> + BCH_FLASHLAYOUT0_META_SIZE_OFFSET; + + tmp = readl(&bch_regs->hw_bch_flash0layout1); + l->data0_size = 4 * ((tmp & BCH_FLASHLAYOUT0_DATA0_SIZE_MASK) >> + BCH_FLASHLAYOUT0_DATA0_SIZE_OFFSET); + l->ecc0 = (tmp & BCH_FLASHLAYOUT0_ECC0_MASK) >> + BCH_FLASHLAYOUT0_ECC0_OFFSET; + l->datan_size = 4 * ((tmp & BCH_FLASHLAYOUT1_DATAN_SIZE_MASK) >> + BCH_FLASHLAYOUT1_DATAN_SIZE_OFFSET); + l->eccn = (tmp & BCH_FLASHLAYOUT1_ECCN_MASK) >> + BCH_FLASHLAYOUT1_ECCN_OFFSET; +} + +/* + * Set BCH to specific layout used by ROM bootloader to read FCB. + */ +void mxs_nand_mode_fcb(struct mtd_info *mtd) +{ + u32 tmp; + struct mxs_bch_regs *bch_regs = (struct mxs_bch_regs *)MXS_BCH_BASE; + struct nand_chip *nand = mtd_to_nand(mtd); + struct mxs_nand_info *nand_info = nand_get_controller_data(nand); + + nand_info->en_randomizer = 1; + + mtd->writesize = 1024; + mtd->oobsize = 1862 - 1024; + + /* 8 ecc_chunks_*/ + tmp = 7 << BCH_FLASHLAYOUT0_NBLOCKS_OFFSET; + /* 32 bytes for metadata */ + tmp |= 32 << BCH_FLASHLAYOUT0_META_SIZE_OFFSET; + /* using ECC62 level to be performed */ + tmp |= 0x1F << BCH_FLASHLAYOUT0_ECC0_OFFSET; + /* 0x20 * 4 bytes of the data0 block */ + tmp |= 0x20 << BCH_FLASHLAYOUT0_DATA0_SIZE_OFFSET; + tmp |= 0 << BCH_FLASHLAYOUT0_GF13_0_GF14_1_OFFSET; + writel(tmp, &bch_regs->hw_bch_flash0layout0); + + /* 1024 for data + 838 for OOB */ + tmp = 1862 << BCH_FLASHLAYOUT1_PAGE_SIZE_OFFSET; + /* using ECC62 level to be performed */ + tmp |= 0x1F << BCH_FLASHLAYOUT1_ECCN_OFFSET; + /* 0x20 * 4 bytes of the data0 block */ + tmp |= 0x20 << BCH_FLASHLAYOUT1_DATAN_SIZE_OFFSET; + tmp |= 0 << BCH_FLASHLAYOUT1_GF13_0_GF14_1_OFFSET; + writel(tmp, &bch_regs->hw_bch_flash0layout1); +} + +/* + * Restore BCH to normal settings. + */ +void mxs_nand_mode_normal(struct mtd_info *mtd) +{ + struct mxs_bch_regs *bch_regs = (struct mxs_bch_regs *)MXS_BCH_BASE; + struct nand_chip *nand = mtd_to_nand(mtd); + struct mxs_nand_info *nand_info = nand_get_controller_data(nand); + + nand_info->en_randomizer = 0; + + mtd->writesize = nand_info->writesize; + mtd->oobsize = nand_info->oobsize; + + writel(nand_info->bch_flash0layout0, &bch_regs->hw_bch_flash0layout0); + writel(nand_info->bch_flash0layout1, &bch_regs->hw_bch_flash0layout1); +} + +uint32_t mxs_nand_mark_byte_offset(struct mtd_info *mtd) +{ + struct nand_chip *chip = mtd_to_nand(mtd); + struct mxs_nand_info *nand_info = nand_get_controller_data(chip); + struct bch_geometry *geo = &nand_info->bch_geometry; + + return geo->block_mark_byte_offset; +} + +uint32_t mxs_nand_mark_bit_offset(struct mtd_info *mtd) +{ + struct nand_chip *chip = mtd_to_nand(mtd); + struct mxs_nand_info *nand_info = nand_get_controller_data(chip); + struct bch_geometry *geo = &nand_info->bch_geometry; + + return geo->block_mark_bit_offset; +} diff --git a/include/mxs_nand.h b/include/mxs_nand.h index 4bd65cded9..ada20483d0 100644 --- a/include/mxs_nand.h +++ b/include/mxs_nand.h @@ -66,8 +66,30 @@ struct mxs_nand_info { /* DMA descriptors */ struct mxs_dma_desc **desc; uint32_t desc_index; + + /* Hardware BCH interface and randomizer */ + u32 en_randomizer; + u32 writesize; + u32 oobsize; + u32 bch_flash0layout0; + u32 bch_flash0layout1; +}; + +struct mxs_nand_layout { + u32 nblocks; + u32 meta_size; + u32 data0_size; + u32 ecc0; + u32 datan_size; + u32 eccn; }; int mxs_nand_init_ctrl(struct mxs_nand_info *nand_info); int mxs_nand_init_spl(struct nand_chip *nand); int mxs_nand_setup_ecc(struct mtd_info *mtd); + +void mxs_nand_mode_fcb(struct mtd_info *mtd); +void mxs_nand_mode_normal(struct mtd_info *mtd); +u32 mxs_nand_mark_byte_offset(struct mtd_info *mtd); +u32 mxs_nand_mark_bit_offset(struct mtd_info *mtd); +void mxs_nand_get_layout(struct mtd_info *mtd, struct mxs_nand_layout *l); 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