- fix NAND_CMD_READID command for ONFI detect. - add NAND_CMD_PARAM command to read the ONFI parameter page.
Signed-off-by: Shengzhou Liu Shengzhou.Liu@freescale.com --- drivers/mtd/nand/fsl_elbc_nand.c | 19 ++++++++++++------- 1 files changed, 12 insertions(+), 7 deletions(-)
diff --git a/drivers/mtd/nand/fsl_elbc_nand.c b/drivers/mtd/nand/fsl_elbc_nand.c index 4d1e527..52362b1 100644 --- a/drivers/mtd/nand/fsl_elbc_nand.c +++ b/drivers/mtd/nand/fsl_elbc_nand.c @@ -340,20 +340,25 @@ static void fsl_elbc_cmdfunc(struct mtd_info *mtd, unsigned int command,
/* READID must read all 5 possible bytes while CEB is active */ case NAND_CMD_READID: - vdbg("fsl_elbc_cmdfunc: NAND_CMD_READID.\n"); + case NAND_CMD_PARAM: + vdbg("fsl_elbc_cmdfunc: NAND_CMD 0x%x.\n", command);
out_be32(&lbc->fir, (FIR_OP_CW0 << FIR_OP0_SHIFT) | (FIR_OP_UA << FIR_OP1_SHIFT) | (FIR_OP_RBW << FIR_OP2_SHIFT)); - out_be32(&lbc->fcr, NAND_CMD_READID << FCR_CMD0_SHIFT); - /* 5 bytes for manuf, device and exts */ - out_be32(&lbc->fbcr, 5); - ctrl->read_bytes = 5; + out_be32(&lbc->fcr, command << FCR_CMD0_SHIFT); + /* + * although currently it's 8 bytes for READID, we always read + * the maximum 256 bytes(for PARAM) + */ + out_be32(&lbc->fbcr, 256); + ctrl->read_bytes = 256; ctrl->use_mdr = 1; - ctrl->mdr = 0; - + ctrl->mdr = column; set_addr(mtd, 0, 0, 0); fsl_elbc_run_command(mtd); + if (mtd->writesize > 2048) + memcpy_fromio(ctrl->buffer, ctrl->addr, 256); return;
/* ERASE1 stores the block and page address */