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u-boot/drivers/mtd/nand
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pekon gupta d016dc42ce mtd: nand: omap: enable BCH ECC scheme using ELM for generic platform 
BCH8_ECC scheme implemented in omap_gpmc.c driver has following favours
+-----------------------------------+-----------------+-----------------+
|ECC Scheme                         | ECC Calculation | Error Detection |
+-----------------------------------+-----------------+-----------------+
|OMAP_ECC_BCH8_CODE_HW              |GPMC             |ELM H/W engine   |
|OMAP_ECC_BCH8_CODE_HW_DETECTION_SW |GPMC             |S/W BCH library  |
+-----------------------------------+-----------------+-----------------+

Current implementation limits the BCH8_CODE_HW only for AM33xx device family.
(using CONFIG_AM33XX). However, other SoC families (like TI81xx) also have
ELM hardware module, and can support ECC error detection using ELM.

This patch
- removes CONFIG_AM33xx
	Thus this driver can be reused by all devices having ELM h/w engine.
- adds omap_select_ecc_scheme()
	A common function to handle ecc-scheme related configurations. This
	can be used both during device-probe and via user-space u-boot commads
	to change ecc-scheme. During device probe ecc-scheme is selected based
	on CONFIG_NAND_OMAP_ELM or CONFIG_NAND_OMAP_BCH8
- enables CONFIG_BCH
	S/W library (lib/bch.c) required by OMAP_ECC_BCHx_CODE_HW_DETECTION_SW
  	is enabled by CONFIG_BCH.
- enables CONFIG_SYS_NAND_ONFI_DETECTION
	for auto-detection of ONFI compliant NAND devices
- updates following README doc
	doc/README.nand
	board/ti/am335x/README
	doc/README.omap3

Signed-off-by: Pekon Gupta <pekon@ti.com>
[scottwood@freescale.com: fixed unused variable warning]
Signed-off-by: Scott Wood <scottwood@freescale.com>
2013-11-21 13:33:41 -06:00
..
am335x_spl_bch.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
atmel_nand.c mtd: atmel_nand: use dev_xxx instead of printk 2013-11-21 13:33:41 -06:00
atmel_nand_ecc.h Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
bfin_nand.c mtd: resync with Linux-3.7.1 2013-05-31 17:12:03 -05:00
davinci_nand.c nand, davinci: add special UBL ecc position 2013-11-01 15:30:51 -04:00
diskonchip.c mtd: resync with Linux-3.7.1 2013-05-31 17:12:03 -05:00
docg4.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
docg4_spl.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
fsl_elbc_nand.c mtd/fsl_elbc: take NAND_ECC_SOFT_BCH config option into account 2013-10-24 09:36:05 -07:00
fsl_elbc_spl.c Coding Style cleanup: replace leading SPACEs by TABs 2013-10-14 16:06:54 -04:00
fsl_ifc_nand.c mtd/ifc: Add support of 8K page size NAND flash 2013-11-21 13:33:40 -06:00
fsl_ifc_spl.c mtd/ifc: Add support of 8K page size NAND flash 2013-11-21 13:33:40 -06:00
fsl_upm.c Coding Style cleanup: replace leading SPACEs by TABs 2013-10-14 16:06:54 -04:00
fsmc_nand.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
jz4740_nand.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
kb9202_nand.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
kirkwood_nand.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
kmeter1_nand.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
Makefile mtd: nand: omap: make am33xx/elm.c as common driver for all OMAPx and AMxxxx platforms 2013-11-21 13:33:41 -06:00
mpc5121_nfc.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
mxc_nand.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
mxc_nand.h Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
mxc_nand_spl.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
mxs_nand.c mxs_nand: Fix ECC strength for NAND flash with OOB size of 224 2013-09-11 09:33:36 +02:00
nand.c nand: Introduce CONFIG_SYS_NAND_SELF_INIT 2012-01-26 16:09:06 -06:00
nand_base.c Coding Style cleanup: replace leading SPACEs by TABs 2013-10-14 16:06:54 -04:00
nand_bbt.c mtd: resync with Linux-3.7.1 2013-05-31 17:12:03 -05:00
nand_bch.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
nand_ecc.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
nand_ids.c Coding Style cleanup: remove trailing empty lines 2013-10-14 16:06:54 -04:00
nand_plat.c mtd: nand_plat: add simple GPIO framework DEV_READY option 2010-07-08 16:52:12 -05:00
nand_spl_load.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
nand_spl_simple.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
nand_util.c nand_util.c: Correct licensing 2013-10-31 09:24:00 -04:00
ndfc.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
nomadik.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
omap_elm.c mtd: nand: omap: make am33xx/elm.c as common driver for all OMAPx and AMxxxx platforms 2013-11-21 13:33:41 -06:00
omap_gpmc.c mtd: nand: omap: enable BCH ECC scheme using ELM for generic platform 2013-11-21 13:33:41 -06:00
s3c2410_nand.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
tegra_nand.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
tegra_nand.h Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00