[U-Boot] Maximum size of u-boot.imx for TBS2910 board

[Heinrich Schuchardt]

On 11/21/19 9:12 PM, Tom Rini wrote:
> On Thu, Nov 21, 2019 at 09:09:29PM +0100, Heinrich Schuchardt wrote:
>> Hello Soeren,
>>
>> when trying to add support for function key support in the USB keyboard
>> driver u-boot.imx for the TBS2910 surpassed the maximum size for u-boot.imx.
>> https://travis-ci.org/marex/u-boot-usb/builds/614059004
>>
>> Do you remember why on the TBS2910 board this size is limited to
>> 0x5fc00? Other i.MX6 boards like the Wandboard allow a much larger
>> u-boot.imx.
>>
>> The limit is defined here:
>> include/configs/tbs2910.h:80:
>> #define CONFIG_BOARD_SIZE_LIMIT 392192 /* (CONFIG_ENV_OFFSET - 1024) */
>>
>> Could the value CONFIG_ENV_OFFSET=0x60000 be enlarged?
>>
>> Many i.MX6 defconfigs use CONFIG_ENV_OFFSET=0xC0000.
>
> The nature of these boards (aimed at end users) means that we just do
> not want to / cannot really move the stored environment.  Thanks!
>

Another possibility would be to reduce the image size by using
CONFIG_REGEX=n which should be fine for a board with only one supported
network interface.

Best regards

Heinrich