[U-Boot-Users] Sector size with CFI driver?

[Tolunay Orkun <listmember@orkun.us>]

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.