Add swig/host build dependency [Was: Re: [PATCH] uboot-mediatek: clean up build dependencies]

[Peter Naulls]

On 11/17/22 14:33, Petr Štetiar wrote:
> Daniel Golle <daniel at makrotopia.org> [2022-11-17 17:01:43]:
> 
> Hi,
> 
>> Add swig/host to build dependencies.
> 
> this doesn't looks like a cleanup as commit subject suggests, but rather
> contrary :-)

Thanks all in any case for looking at this. We have a possible need to modify
our vendor (or vendor's vendor, hard to be sure) U-Boot.  On our MT7621 boards 
we have vendor versions 2.0.0 aka Ralink version 2.0.0 and 1.1.3 aka Ralink
version 4.3.0.0.  And I have the Mediatek SDK with source for what claims to
be version 5.0.0.0.

Attempts to clarify with the vendor what's going on or get exact sources
or history have proven challenging due to timezones and language barriers,
and I think they simply may not know.

Obviously using the OpenWrt version is going to be probably more satisfactory,
although there may well be vendor changes to support MCU etc.

It's been many many years since I did u-boot work, but is there some magic to
load u-boot image into RAM on mt7621 and run it to try it out before flashing?
I know there are configuration options for DDR and CPU frequency, etc, but 
tftping the u-boot binaries variously and using 'go' result in an apparently
stopped system.

This is the only meaningful documentation I have found.

https://u-boot.readthedocs.io/en/latest/board/mediatek/mt7621.html

Thanks!