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mtd/nand: Add ONFI support for FSL NAND controller

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- 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>
Signed-off-by: Scott Wood <scottwood@freescale.com>
This commit is contained in:
Shengzhou Liu 2011-12-12 17:49:57 +08:00 committed by Scott Wood
parent 4fee6c2f29
commit 80519c8334
1 changed files with 10 additions and 7 deletions
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17
drivers/mtd/nand/fsl_elbc_nand.c
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@ -340,18 +340,21 @@ 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);
return;