[U-Boot] SPL and FIT images

[U-Boot] SPL and FIT images

[michael at walle.cc]

Hi,

I'm looking into the FIT support in the SPL, because we are planning to 
load bootloader from a filesystem (on a MMC device); the SPL will be 
stored in a write-protected SPI flash. To make sure that a user does not 
accidentally put a wrong bootloader image on the filesystem, we would 
like to do some kind of compatiblity checking. I guess this can be done 
with the FIT image and its compatibility node. Looking into the code I 
found out, that FIT images only seems to be supported when the 
bootloader is loaded from raw MMC.

Simon, since this code is from you, might I ask, why you didn't put it 
into the common spl.c (spl_parse_image_header(), etc) so it could be 
used for all other methods, too? I just want to make sure, there is no 
reason not to do it for our case.

-michael

[U-Boot] SPL and FIT images

[Lokesh Vutla]

Hi Michael,

On Thursday 19 May 2016 05:16 PM, michael at walle.cc wrote:
> Hi,
> 
> I'm looking into the FIT support in the SPL, because we are planning to
> load bootloader from a filesystem (on a MMC device); the SPL will be
> stored in a write-protected SPI flash. To make sure that a user does not
> accidentally put a wrong bootloader image on the filesystem, we would
> like to do some kind of compatiblity checking. I guess this can be done
> with the FIT image and its compatibility node. Looking into the code I
> found out, that FIT images only seems to be supported when the
> bootloader is loaded from raw MMC.

FIT support for other boot media was recently posted. Links below:

Fat FS:
http://patchwork.ozlabs.org/patch/618400/
http://patchwork.ozlabs.org/patch/618403/
http://patchwork.ozlabs.org/patch/618405/

SPI:
http://patchwork.ozlabs.org/patch/606959/

NAND:
http://patchwork.ozlabs.org/patch/609326/

UART:
http://patchwork.ozlabs.org/patch/623918/
http://patchwork.ozlabs.org/patch/623919/
http://patchwork.ozlabs.org/patch/623920/

Let me know if you need more info.

Thanks and regards,
Lokesh

> 
> Simon, since this code is from you, might I ask, why you didn't put it
> into the common spl.c (spl_parse_image_header(), etc) so it could be
> used for all other methods, too? I just want to make sure, there is no
> reason not to do it for our case.
> 
> -michael
> _______________________________________________
> U-Boot mailing list
> U-Boot at lists.denx.de
> http://lists.denx.de/mailman/listinfo/u-boot

[U-Boot] SPL and FIT images

[michael at walle.cc]

Am 2016-05-19 14:05, schrieb Lokesh Vutla:
> Hi Michael,
> 
> On Thursday 19 May 2016 05:16 PM, michael at walle.cc wrote:
>> Hi,
>> 
>> I'm looking into the FIT support in the SPL, because we are planning 
>> to
>> load bootloader from a filesystem (on a MMC device); the SPL will be
>> stored in a write-protected SPI flash. To make sure that a user does 
>> not
>> accidentally put a wrong bootloader image on the filesystem, we would
>> like to do some kind of compatiblity checking. I guess this can be 
>> done
>> with the FIT image and its compatibility node. Looking into the code I
>> found out, that FIT images only seems to be supported when the
>> bootloader is loaded from raw MMC.
> 
> FIT support for other boot media was recently posted. Links below:
> 
> Fat FS:
> http://patchwork.ozlabs.org/patch/618400/
> http://patchwork.ozlabs.org/patch/618403/
> http://patchwork.ozlabs.org/patch/618405/
> 
> SPI:
> http://patchwork.ozlabs.org/patch/606959/
> 
> NAND:
> http://patchwork.ozlabs.org/patch/609326/
> 
> UART:
> http://patchwork.ozlabs.org/patch/623918/
> http://patchwork.ozlabs.org/patch/623919/
> http://patchwork.ozlabs.org/patch/623920/
> 
> Let me know if you need more info.

Ah, thanks :)

-michael