Dear Joakim Tjernlund, In message <of287114d8.013b6e51-onc125781c.00667dcd-c125781c.00673...@transmode.se> you wrote: > > > You don't need to make the MMU trick work on all boards, just your board > > (or cpu family), because it wouldn't be imposing anything on > > the rest of the system. Do we actually have someone who > > needs this feature on a board without a suitable MMU, large lockable > > cache or other SRAM, hardware bank switching, or other mechanism > > that can be confined to early low-level board/cpu-specific code? > > Wolfgang seems to think so. As I read his reply he wants a solution for all
Please be aware that I don't think anything at all. I just comment :-) I'm not in your position, where I am focussing on "how can I implement this". I'm looking at the code from the outside, and I ask what does it give to me, what of the things I'd like to have does it not give to me, and at which price does it come. > boards which I don't think is possible. I do think my approach comes closest > though. > I did try BATs but I didn't get very far. If we are talking about _all_ boards we have to keep a wider view. For example, on MPC8xx there are not BATs. Not to mention other architectures. Actually I was not asking for support for all boards, not even for all boards of a specific architecture, or a specific CPU. You submitted this patch, and I learned that the code, as is, is only useful for a single board, which appears to be maintained in an out-of-tree port. For all in-tree boards the code, as is, is broken and unusable without further rework. Needless to repeat that it is completely untested for mainline. So we have a patch that promises a feature, which cannot be used by any of the mainline boards, but it makes the code more complex for zero benefit. It's a nice and appreciated RFC patch or even example implementation, but I fail to see arguments why we should add this to mainline. Best regards, Wolfgang Denk -- DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: w...@denx.de In the future, you're going to get computers as prizes in breakfast cereals. You'll throw them out because your house will be littered with them. - Robert Lucky _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
