[U-Boot] NAND write error with HW ECC on OMAP3

[Ash Charles]

On Wed, Sep 4, 2013 at 1:54 AM, Andreas Bießmann
<andreas.devel at googlemail.com> wrote:
> I can't confirm your complaints. Here it works (at least on tricorder,
> which utilizes BCH for U-Boot section in SPL):
Hi Andreas,

Thanks for your response---this was very helpful.  When I boot my
board using the tricorder board file, it flashes nand correctly.
Likewise, I moved over some of the NAND configuration from
include/configs/tricorder.h to include/configs/omap3_overo.h and,
after a little rearranging to enlarge SPL, it also flashed NAND
correctly.

So...any guesses what it is about setting these variables that gets
NAND flashing to work properly?

+#define CONFIG_NAND_OMAP_BCH8
+#define CONFIG_BCH
-#define CONFIG_SYS_NAND_ECCPOS         {2, 3, 4, 5, 6, 7, 8, 9,\
-                                               10, 11, 12, 13}
+#define CONFIG_SYS_NAND_ECCPOS         {12, 13, 14, 15, 16, 17, 18, 19, 20, \
+                        21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33,\
+                        34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46,\
+                        47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59,\
+                        60, 61, 62, 63}
-#define CONFIG_SYS_NAND_ECCBYTES       3
+#define CONFIG_SYS_NAND_ECCBYTES       13

--Ash