On 22.02.16 19:34, Stephen Warren wrote: > On 02/21/2016 06:57 PM, Alexander Graf wrote: >> Howdy, >> >> Currently on arm64 there is a big pile of mess when it comes to MMU >> support and page tables. Each board does its own little thing and the >> generic code is pretty dumb and nobody actually uses it. >> >> This patch set tries to clean that up. After this series is applied, >> all boards except for the FSL Layerscape ones are converted to the >> new generic page table logic and have icache+dcache enabled. >> >> The new code always uses 4k page size. It dynamically allocates 1G or >> 2M pages for ranges that fit. When a dcache attribute request comes in >> that requires a smaller granularity than our previous allocation could >> fulfill, pages get automatically split. >> >> I have tested and verified the code works on HiKey (bare metal), >> vexpress64 (Foundation Model) and zynqmp (QEMU). The TX1 target is >> untested, but given the simplicity of the maps I doubt it'll break. >> ThunderX in theory should also work, but I haven't tested it. I would >> be very happy if people with access to those system could give the patch >> set a try. >> >> With this we're a big step closer to a good base line for EFI payload >> support, since we can now just require that all boards always have dcache >> enabled. >> >> I would also be incredibly happy if some Freescale people could look >> at their MMU code and try to unify it into the now cleaned up generic >> code. I don't think we're far off here. > > The series, > Tested-by: Stephen Warren <swar...@nvidia.com> > > I tested p2371-2180 (Jetson TX1) ARMv8 development board, including > PCIe-based RTL8169 Ethernet, which makes use of the APIs to > allocate/convert memory as/to uncached.
Thanks a bunch for testing! I'll not include the tag in v4, since there are enough changes that could break something. I would greatly appreciate if you could test it again by then :). Alex _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
