On Thu, Nov 28, 2013 at 06:35:00PM -0600, Dennis Gilmore wrote: > El Wed, 27 Nov 2013 08:53:55 +0100 > Stefano Babic <sba...@denx.de> escribi?: > > Hi Otavio, > > > > On 26/11/2013 13:16, Otavio Salvador wrote: > > >> I'm going to suggest this is the wrong path. Once you see i.MX > > >> systems with > 768MB DDR you're going to have initrd/fdt placed > > >> into memory Linux can't access without HIGHMEM on, and you need > > >> the FDT before then. > > > > > > I didn't catch this case but it is a valid problem, indeed :-( > > > > I missed this issue, too :-( > > > > Does it work with your patch ? Most supported i.MX6 boards have more > > as 768MB, and I am wondering that all kernels can boot. > > In fedora land we have not seen issues booting 3.10 3.11 3.12 or 3.13 > in regards to things getting clobbered. but it does bring me back to my > thought that u-boot should be calculating where to place everything to > ensure that things do not get clobbered.
I know we talked on IRC yesterday, and this email predates that, but there's a lot of (potential) problems with "oh just let someone else figure out where to place things", such as "what is that thing going to do once it runs" ? I'm fine with (and would encourage) standardized names and a suggested base layout (ie memory base + 0x$FOO for ...) > Most fedora i.MX6 users are using wandboards with a few utilites. > > our wandboard config uses > > fdt_high=0xffffffff Note that this disables relocation of the DT, which is what I was saying is the problem in the original patch, not the location. -- Tom
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