On 10/22/2014 03:53 AM, John Crispin wrote: > Hi Ralf, > > On 22/10/2014 10:34, Ralf Baechle wrote: >> This question comes up every once in a while and I've also been >> approached during ELCE in Düsseldorf why there is no single MIPS >> kernel for all platforms, so I thought I should post a writeup on >> the topic. >> > > for the SoCs supported by OpenWrt this is a no-go. we are already > having a hard time fighting bloat. to get the images to fit we need to > already build device specific images that only hold the DT, drivers, > ... that a specific board needs. having a kernel that can boot on X > devices wont even fit into flash and if it does there is not space > left for the userland. A multi-platform kernel should allow to compile in/out specific platforms (like what ARM does), such that we can still achieve a small kernel goal in OpenWrt. > > I think this feature is only interesting for the older platforms and > the upcoming mobile SoC based in MIPS. i.e. the users are debian and > android type device. You mean, older systems such as Sibyte, the SGI's IPxx and similar? Those may have memory architecture requirements (spaces.h) that make it difficult if possible to support. -- Florian
