[Help] SST39VF6401B Support

[Guillaume LECERF]

2010/10/22 yidong zhang <zhangyd6 at gmail.com>:
>> You didn't applied my latest patch, you would have only 1 erase region
>> if you did.
>  It was printed by the print_cfi_ident function. And the region
> number is readed from the flash. So there was 2 erase region

OK, my bad :(

The datasheet is really f***ed up.

"Sector Information (y + 1 = Number of sectors; z x 256B = sector size)
y = 2047 + 1 = 2048 sectors (03FFH = 1023)
z = 32 x 256 Bytes = 8 KBytes/sector (0100H = 32)"

03FFH = 1023, so y = 1023 + 1 = 1024 sectors
0100H = 256 (not 32), so z = 256 x 256 = 64 KBytes/sector

I think we should modify the sector size on the fly, i.e. changing
0100h to 0020h (32).

Could you try setting cif->cfiq->EraseRegionInfo[0] to 0x02003FF in
fixup_sst39vf_rev_b() ?

-- 
Guillaume LECERF
GeeXboX developer - www.geexbox.org