[LEDE-DEV] [PATCH] cns3xxx: backport upstream SPI Flash partition sizes

[Felix Fietkau]

On 2016-09-15 12:16, Felix Fietkau wrote:
> On 2016-09-15 11:34, Koen Vandeputte wrote:
>> As indicated by Tim Harvey:
>> 
>> The 4.4 kernel is not easily sized down to below the 1.5MB limit
>> imposed by the SPI flash MTD partition mapping. Increase this
>> to 2MB where it is for NOR flash devices.
>> Additionally add a check that ensures the kernel fits within
>> the 2MB limit.
>> 
>> This resolves boot issues on SPI based boards such as the GW2380/82.
>> 
>> https://github.com/Gateworks/openwrt/commit/17b860f32fe5739042445eb852109682d6ff7d99
>> 
>> Signed-off-by: Koen Vandeputte <koen.vandeputte at ncentric.com>
> I'm now working on the approach that I encouraged Tim to take when this
> issue came up last. I think simply bumping the hardcoded kernel/rootfs
> split partition sizes is a hack at best, my solution involves using
> mtdsplit to make the kernel/rootfs split dynamic, like on other platforms.
> From what I can tell, the old sysupgrade script is written in a way that
> the image format changes will not break sysupgrade from old firmware to
> new and vice versa.
It's done now and pushed to my staging tree:
https://git.lede-project.org/?p=lede/nbd/staging.git;a=commit;h=aa58ee42c93136a8e158ef317cad20806001c039

Please take a look at the commit description, test it, and let me know
what you think.

- Felix