Subject: [PATCH] ARM: shmobile: koelsch: Fix flash partition label and size in device tree

From: [email-masked] (Chai Wen)
Date: Thu, 30 Oct 2014 18:50:49 +0800

On 10/30/2014 06:23 PM, Geert Uytterhoeven wrote:

> On Thu, Oct 30, 2014 at 6:54 AM, Simon Horman
> <[email-masked]> wrote:
>> From: Hisashi Nakamura <[email-masked]>
>>
>> The size and the name of flash partition are consistent
>> across use the R-Car Gen2 series.
>>
>> This patch makes the koelsch board consistent with the lager board.
> 
> Does this match the actual data in the FLASH?
> 
> On my board, the SPI boot loader is at 0x00000000.
> There's also a small unidentified chunk at 0x00040000:
> 
>     00040000  00 40 30 e6 5c 3a 03 00  ff ff ff ff ff ff ff ff
> |. at 0.\:..........|
> 
> u-Boot seems to be at 0x00080000.
> u-Boot environment variables are saved at 0x000c0000.
> This does match the old "bootenv" partition.
> 
> After that it's all-zeroes until 0x00100000, where I did my SPI tests,
> based on the old layout.
> 
> Do I have a non-standard Koelsch FLASH layout on my board?

FYI, I have a koelsch board, and the layout out the flash is like:

0x0            0x10000               0x50000            
|-- loader.bin --|--    uboot.bin    --|--           something else  --|
0               64K                   320K                             16M

But, I have no idea whether this is a standard layout or not.

thanks
chai wen

> 
>> --- a/arch/arm/boot/dts/r8a7791-koelsch.dts
>> +++ b/arch/arm/boot/dts/r8a7791-koelsch.dts
>> @@ -390,17 +390,17 @@
>>
>>                 partition at 0 {
>>                         label = "loader";
>> -                       reg = <0x00000000 0x00080000>;
>> +                       reg = <0x00000000 0x00040000>;
>>                         read-only;
>>                 };
>> -               partition at 80000 {
>> -                       label = "bootenv";
>> -                       reg = <0x00080000 0x00080000>;
>> +               partition at 40000 {
>> +                       label = "user";
>> +                       reg = <0x00040000 0x00400000>;
>>                         read-only;
>>                 };
>> -               partition at 100000 {
>> -                       label = "data";
>> -                       reg = <0x00100000 0x03f00000>;
>> +               partition at 440000 {
>> +                       label = "flash";
>> +                       reg = <0x00440000 0x03bc0000>;
>>                 };
>>         };
>>  };
> 
> Gr{oetje,eeting}s,
> 
>                         Geert
> 
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert at linux-m68k.org
> 
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
>                                 -- Linus Torvalds
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> 

-- 
Regards

Chai Wen