[U-Boot] [PATCH] cfi_flash: reverse geometry for newer STM parts

[Stefan Roese]

On Tuesday 10 May 2011 00:33:36 Mike Frysinger wrote:
> For newer STM parts where CFI >= 1.1, there is a byte in the extended
> structure that declares the flash layout type (just like the AMD parts),
> so key off of that to find out when we need to reverse the geometry.
> 
> This can be seen with M29W640 parts where U-Boot does:
> Bank # 1: CFI conformant FLASH (16 x 16)  Size: 8 MB in 135 Sectors
>   AMD Standard command set, Manufacturer ID: 0x20, Device ID: 0x22ED
>   Erase timeout: 8192 ms, write timeout: 1 ms
>   Buffer write timeout: 1 ms, buffer size: 16 bytes
> 
>   Sector Start Addresses:
>   20000000   RO   20002000   RO   20004000   RO   20006000   RO   20008000 
>  RO 2000A000   RO   2000C000   RO   2000E000   RO   20010000   RO  
> 20020000   RO ...
> 
> But Linux does:
> physmap platform flash device: 00800000 at 20000000
> physmap-flash.0: Found 1 x16 devices at 0x0 in 16-bit bank.
>                  Manufacturer ID 0x000020 Chip ID 0x0022ed
> physmap-flash.0: Swapping erase regions for top-boot CFI table.

Applied to u-boot-cfi-flash/master. Thanks.
 
Cheers,
Stefan

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