[U-Boot-Users] Sector size with CFI driver?
Tolunay Orkun
listmember at orkun.us
Tue Oct 31 21:53:28 CET 2006
Timur Tabi wrote:
> When using the CFI driver, how is the sector size determined?
>
> The reason I ask is that I have two different versions of U-Boot for my board,
> both developed in-house. One version is based on 1.1.3, and the other on
> 1.1.5. The 1.1.5 version cannot erase/program the last sector on the first
> flash bank. Also, the 1.1.3 says this when I do flinfo:
>
> Bank # 1: CFI conformant FLASH (16 x 16) Size: 8 MB in 135 Sectors
> Erase timeout 16384 ms, write timeout 1 ms, buffer write timeout 1 ms,
> buffer size 1
> Sector Start Addresses:
> FE000000 FE002000 FE004000 FE006000 FE008000
> FE00A000 FE00C000 FE00E000 FE010000 FE020000
>
> And the 1.1.5 version says:
>
> Bank # 1: CFI compatible FLASH (16 port width with 16 chip width)
> Command set is AMD/Fujitsu standard. Driver is polling DQ6 for status checking.
> Size: 8 MB in 135 Sectors
> Erase timeout 16384 ms, write timeout 0 ms, buffer write timeout 1 ms,
> buffer size 1
> Sector Start Addresses:
> FE000000 FE010000 FE020000 FE030000 FE040000
> FE050000 FE060000 FE070000 FE080000 FE090000
>
> As you can see the sector sizes are different, but everything else is the same.
It looks like you are using a bottom boot block flash and there are 8
smaller sectors of 8KiB and 127 larger sectors of 64KiB. You will have
to debug the 1.1.5 version to see why it is not seeing the 8 small
sectors. If both builds are using cfi_driver.c then a bug must have been
introduced recently.
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