On 14 September 2015 at 01:07, Bin Meng <bmeng...@gmail.com> wrote: > Quark SoC does not support MSR MTRRs. Fixed and variable range MTRRs > are accessed indirectly via the message port and not the traditional > MSR mechanism. Only UC, WT and WB cache types are supported. > > We configure all the fixed range MTRRs with common values (VGA RAM > as UC, others as WB) and 3 variable range MTRRs for ROM/eSRAM/RAM as > WB, which significantly improves the boot time performance. > > With this commit, it takes only 2 seconds for U-Boot to boot to shell > on Intel Galileo board. Previously it took about 6 seconds. > > Signed-off-by: Bin Meng <bmeng...@gmail.com> > --- > > arch/x86/cpu/quark/dram.c | 10 ++++++ > arch/x86/cpu/quark/quark.c | 57 > +++++++++++++++++++++++++++++++++ > arch/x86/include/asm/arch-quark/quark.h | 44 +++++++++++++++++++++++++ > 3 files changed, 111 insertions(+)
Gosh what a strange an incompatible architecture we have here :-) Acked-by: Simon Glass <s...@chromium.org> Tested-by: Simon Glass <s...@chromium.org> _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
