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mtd: nand: raw: mxs_nand changes for nandbcb

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Add more BCH setting mode and remove the unnecessary platform constrain

Signed-off-by: Han Xu <han.xu@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
This commit is contained in:
Han Xu 2020-05-06 20:59:19 +08:00 committed by Stefano Babic
parent f797fe84fc
commit bf9382addf
2 changed files with 42 additions and 4 deletions
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43
drivers/mtd/nand/raw/mxs_nand.c
View file

@ -710,7 +710,7 @@ static int mxs_nand_ecc_read_page(struct mtd_info *mtd, struct nand_chip *nand,
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() || is_imx8m()) && nand_info->en_randomizer) {
if (nand_info->en_randomizer) {
d->cmd.pio_words[2] |= GPMI_ECCCTRL_RANDOMIZER_ENABLE |
GPMI_ECCCTRL_RANDOMIZER_TYPE2;
d->cmd.pio_words[3] |= (page % 256) << 16;
@ -867,7 +867,7 @@ 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() || is_imx8m()) && nand_info->en_randomizer) {
if (nand_info->en_randomizer) {
d->cmd.pio_words[2] |= GPMI_ECCCTRL_RANDOMIZER_ENABLE |
GPMI_ECCCTRL_RANDOMIZER_TYPE2;
/*
@ -1489,7 +1489,7 @@ void mxs_nand_get_layout(struct mtd_info *mtd, struct mxs_nand_layout *l)
/*
* Set BCH to specific layout used by ROM bootloader to read FCB.
*/
void mxs_nand_mode_fcb(struct mtd_info *mtd)
void mxs_nand_mode_fcb_62bit(struct mtd_info *mtd)
{
u32 tmp;
struct mxs_bch_regs *bch_regs = (struct mxs_bch_regs *)MXS_BCH_BASE;
@ -1522,6 +1522,43 @@ void mxs_nand_mode_fcb(struct mtd_info *mtd)
writel(tmp, &bch_regs->hw_bch_flash0layout1);
}
/*
* Set BCH to specific layout used by ROM bootloader to read FCB.
*/
void mxs_nand_mode_fcb_40bit(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);
/* no randomizer in this setting*/
nand_info->en_randomizer = 0;
mtd->writesize = 1024;
mtd->oobsize = 1576 - 1024;
/* 8 ecc_chunks_*/
tmp = 7 << BCH_FLASHLAYOUT0_NBLOCKS_OFFSET;
/* 32 bytes for metadata */
tmp |= 32 << BCH_FLASHLAYOUT0_META_SIZE_OFFSET;
/* using ECC40 level to be performed */
tmp |= 0x14 << 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 + 552 for OOB */
tmp = 1576 << BCH_FLASHLAYOUT1_PAGE_SIZE_OFFSET;
/* using ECC40 level to be performed */
tmp |= 0x14 << 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.
*/

3
include/mxs_nand.h
View file

@ -95,7 +95,8 @@ 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_fcb_62bit(struct mtd_info *mtd);
void mxs_nand_mode_fcb_40bit(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);