[RFC PATCH] am335x* defconfig: Increase u-boot partition in mtdparts

[Judith Mendez]

Hi Tom,

On 1/8/25 10:57 AM, Tom Rini wrote:
> On Tue, Jan 07, 2025 at 04:50:55PM -0600, Judith Mendez wrote:
> 
>> From: Hong Guan <hguan at ti.com>
>>
>> Fix u-boot NAND partition in MTDPARTS_DEFAULT since the size
>> of u-boot image has grown beyond 1MB and no longer fits in 1MB
>> NAND partition, thus we are failing to flash and boot via GPMC
>> NAND.
>>
>> Increase the size of NAND.u-boot to 2MB since the size of
>> u-boot.img is currently 1.4M.
>>
>> Signed-off-by: Hong Guan <hguan at ti.com>
>> [Judith: extend fix to HS defconfigs and add commit msg]
>> Signed-off-by: Judith Mendez <jm at ti.com>
>> ---
>> This patch is marked RFC to understand if solution is acceptable
>> since changing partition sizes will not be backwards compatible
>> solution.
>>
>> One other solution was too try to reduce the size of u-boot proper,
>> but removing features (boot modes.. etc) did not seem to get the
>> size of u-boot proper to 1MB with a usable u-boot proper.
> 
> So the big problem here is that we have more space being taken up by
> device trees than U-Boot itself. A quick mkimage -l and adding things up
> shows that we have 851936 bytes of device trees. You should look at
> switching to MULTI_DTB_FIT and enabling some compression, along with
> possibly LTO of U-Boot itself.
> 

Thanks so much for your feedback, I will look some more into this.

~ Judith