On Mon, May 25, 2015 at 02:59:31AM -0500, Rob Landley wrote: > On Fri, May 22, 2015 at 10:50 AM, Paul Burton <paul.burton@xxxxxxxxxx> wrote: > > This series begins converting the MIPS Malta board to use device tree, > > which is done with a few goals in mind: > > > > - To modernise the Malta board support, providing a cleaner example to > > people referencing it when bringing up new boards and reducing the > > amount of code they need to write. > > > > - To make the code at the board level more generic with the eventual > > aim of sharing it between multiple boards & allowing for > > multi-platform kernel binaries. Although this series doesn't result > > in the kernel reaching those goals, it is a step in that direction. > > > > - To result in a more maintainable kernel through a combination of the > > above. > > How would I go about testing this under qemu? > > (Especially the "more than 256 megs ram" part. :) Hi Rob, With the series applied you can start from malta_defconfig, enable CONFIG_HIGHMEM, build your kernel then run QEMU like so: $ qemu-system-mipsel -kernel vmlinux -m 1G -append memsize=1G -serial stdio If you apply this patch to QEMU: https://www.mail-archive.com/qemu-devel@xxxxxxxxxx/msg297902.html (or if you use a real board) then you can omit the memsize argument from the kernel command line (ie. the -append) and just do: $ qemu-system-mipsel -kernel vmlinux -m 1G -serial stdio The kernel will then retrieve the correct memory size from the bootloader-provided environment and make use of all the available RAM. Thanks, Paul
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