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Pekon Gupta eae39cb493 mtd: nand: omap: fix ecclayout to be in sync with u-boot NAND driver 
Fixes: commit a919e51161
       mtd: nand: omap2: clean-up BCHx_HW and BCHx_SW ECC configurations in device_probe

Fixes ecclayout mismatch introduced in above commit for following ecc-schemes:
 - OMAP_ECC_BCH4_CODE_HW_DETECTION_SW
 - OMAP_ECC_BCH8_CODE_HW_DETECTION_SW
 However, this patch also touches other ecc-schemes as the fix required
 refactoring common code, into ecc-scheme specific code.

This patch aligns ecc-layout for below ecc-schemes as per reference [1],[2],[3]

 +---+------------+-------------++-------------+-------------+
 |OOB|BCH8_CODE_HW|BCH8_CODE_HW_||HAM1_CODE_HW |HAM1_CODE_HW |
 |pos|            | DETECTION_SW||(x8 device)  |(x16 device) |
 +---+------------+-------------++-------------+-------------+
 | 0 |BADBLK_MARK | BADBLK_MARK || BADBLK_MARK | BADBLK_MARK |
 | 1 |BADBLK_MARK | BADBLK_MARK || eccpos[0]   | BADBLK_MARK |
 | 2 | eccpos[0]  | eccpos[0]   || eccpos[1]   | eccpos[0]   |
 | 3 | eccpos[1]  | eccpos[1]   || eccpos[2]   | eccpos[1]   |
 | 4 | eccpos[2]  | eccpos[2]   || eccpos[3]   | eccpos[2]   |
 | 5 | eccpos[3]  | eccpos[3]   || eccpos[4]   | eccpos[3]   |
 | 6 | eccpos[4]  | eccpos[4]   || eccpos[5]   | eccpos[4]   |
 | 7 | eccpos[5]  | eccpos[5]   || eccpos[6]   | eccpos[5]   |
 | 8 | eccpos[6]  | eccpos[6]   || eccpos[7]   | eccpos[6]   |
 | 9 | eccpos[7]  | eccpos[7]   || eccpos[8]   | eccpos[7]   |
 |10 | eccpos[8]  | eccpos[8]   || eccpos[9]   | eccpos[8]   |
 |11 | eccpos[9]  | eccpos[9]   || eccpos[10]  | eccpos[9]   |
 |12 | eccpos[10] | eccpos[10]  || eccpos[11]  | eccpos[10]  |
 |13 | eccpos[11] | eccpos[11]  || oobfree[0]  | eccpos[11]  |
 |14 | eccpos[12] | eccpos[12]  || oobfree[1]  | oobfree[0]  |
 |15 | eccpos[13] | <reserved>  || oobfree[2]  | oobfree[1]  |
 +---+------------+-------------++-------------+-------------+
 |16 | eccpos[14] | eccpos[13]  || oobfree[3]  | oobfree[2]  |
 |...| [...]      | [...]       || [...]       | [...]       |
 |56 | eccpos[54] | eccpos[51]  || oobfree[43] | oobfree[42] |
 |57 | eccpos[55] | <reserved>  || oobfree[44] | oobfree[43] |
 +===+============+=============+==============+=============+
 |58 | oobfree[0] | oobfree[0]  || oobfree[45] | oobfree[44] |
 |59 | oobfree[1] | oobfree[1]  || oobfree[46] | oobfree[45] |
 |60 | oobfree[2] | oobfree[2]  || oobfree[47] | oobfree[46] |
 |61 | oobfree[3] | oobfree[3]  || oobfree[48] | oobfree[47] |
 |62 | oobfree[4] | oobfree[4]  || oobfree[49] | oobfree[48] |
 |63 | oobfree[5] | oobfree[5]  || oobfree[50] | oobfree[49] |
 +---+------------+-------------+--------------+-------------+

[1] ecc-layout expected by ROM code, as specified in SoC TRM under:
      Chapter="Initialization"
        Section="Device Initialization by ROM code"
            Sub-Section="Memory Booting"
                Heading="NAND"
                Figure="ECC Locations in NAND Spare Areas"

[2] ecc-layout updates in u-boot
    http://lists.denx.de/pipermail/u-boot/2013-November/167551.html

[3] u-boot configurations to match above ecc-layout are documented at
    https://processors.wiki.ti.com/index.php/Linux_Core_NAND_User%27s_Guide

CC: <stable@vger.kernel.org> # 3.13.x+
Reported-by: Enric Balletbo Serra <eballetbo@iseebcn.com>
Tested-by: Enric Balletbo i Serra <eballetbo@gmail.com>
Tested-by: Stefan Roese <sr@denx.de>
Signed-off-by: Pekon Gupta <pekon@ti.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2014-02-23 14:49:56 -08:00
..
chips mtd: jedec_probe: fix LH28F640BF definition 2013-08-05 21:04:17 +01:00
devices mtd: m25p80: Set rx_nbits for Quad SPI transfers 2014-01-27 21:19:28 -08:00
lpddr mtd: lpddr: Mark functions as static and remove unused function 2014-01-03 11:22:26 -08:00
maps MTD updates for 3.14: 2014-01-28 18:56:37 -08:00
nand mtd: nand: omap: fix ecclayout to be in sync with u-boot NAND driver 2014-02-23 14:49:56 -08:00
onenand mtd: onenand: Trivial cleanup in samsung.h 2014-01-11 12:00:25 -08:00
tests mtd: tests: mtd_nandecctest: Use IS_ENABLED() macro 2014-01-03 11:22:21 -08:00
ubi UBI: avoid program operation on NOR flash after erasure interrupted 2014-01-09 18:25:38 +02:00
afs.c mtd: make register_mtd_parser return void 2014-01-03 11:22:22 -08:00
ar7part.c mtd: make register_mtd_parser return void 2014-01-03 11:22:22 -08:00
bcm47xxpart.c mtd: bcm47xxpart: alternative MAGIC for board_data partition 2014-01-07 10:07:37 -08:00
bcm63xxpart.c mtd: make register_mtd_parser return void 2014-01-03 11:22:22 -08:00
cmdlinepart.c mtd: make register_mtd_parser return void 2014-01-03 11:22:22 -08:00
ftl.c
inftlcore.c mtd: nand: add a helper to detect the nand type 2013-10-27 16:27:06 -07:00
inftlmount.c
Kconfig mtd: Hide CONFIG_MTD_BLKDEVS from the menu 2014-01-07 10:07:36 -08:00
Makefile mtd: merge mtdchar module with mtdcore 2013-04-05 13:16:54 +01:00
mtd_blkdevs.c block_device_operations->release() should return void 2013-05-07 02:16:21 -04:00
mtdblock.c mtd: Move major number definitions to major.h 2013-11-06 23:32:59 -08:00
mtdblock_ro.c mtd: Move major number definitions to major.h 2013-11-06 23:32:59 -08:00
mtdchar.c mtd: mtdchar: return expected errors on mmap() call 2013-11-11 11:18:15 -08:00
mtdconcat.c
mtdcore.c mtd: convert to use ATTRIBUTE_GROUPS 2014-01-03 11:22:21 -08:00
mtdcore.h mtd: merge mtdchar module with mtdcore 2013-04-05 13:16:54 +01:00
mtdoops.c mtdoops: don't erase flash at each boot 2012-11-15 15:37:51 +02:00
mtdpart.c mtd: make register_mtd_parser return void 2014-01-03 11:22:22 -08:00
mtdsuper.c mtd: Move major number definitions to major.h 2013-11-06 23:32:59 -08:00
mtdswap.c mtd: mtdswap: replace strict_strtoul() with kstrtoul() 2013-08-30 21:52:51 +01:00
nftlcore.c mtd: nand: add a helper to detect the nand type 2013-10-27 16:27:06 -07:00
nftlmount.c
ofpart.c mtd: make register_mtd_parser return void 2014-01-03 11:22:22 -08:00
redboot.c mtd: make register_mtd_parser return void 2014-01-03 11:22:22 -08:00
rfd_ftl.c
sm_ftl.c mtd: sm_ftl: Staticize local symbols 2013-08-30 21:51:25 +01:00
sm_ftl.h
ssfdc.c mtd: nand: add a helper to detect the nand type 2013-10-27 16:27:06 -07:00