On 2010-11-23 7:51 PM, Gabor Juhos wrote: > Hi Arnaud, > >> On Tue, Nov 23, 2010 at 10:06 AM, Gabor Juhos <juhosg@xxxxxxxxxxx> wrote: >>> This patch adds a generic solution to support multiple machines based on >>> a given SoC within a single kernel image. It is implemented already for >>> several other architectures but MIPS has no generic support for that yet. >>> >> Is this the way `arch/mips' wants to go to support multiple machine >> within a same kernel image ? > > I don't know yet what will be the chosen way. > >> Flattened Device Tree is the other way to achieve that. I remind the latter >> being proposed by Felix Fietkau on #openwrt. > > FDT makes sense when the bootloader supports that. FDT makes sense when the > bootloader supports that, but i'm not aware of any AR71xx/AR724x/AR913x based > board which has such bootloader. Additionally, the device-tree support for MIPS > has been added only recently and none of the existing MIPS boards are using that > yet AFAIK. If that will be widely used we can consider to switch to that later. We don't need boot loader support, we can make a simple loader stub that passes the FDT data to the kernel. It would certainly be better than our current cmdline hack ;) I think using FDT would save us a lot of maintenance work, as we wouldn't have to change the kernel for every single new board that we add support for. - Felix
