On 11/08/2017 06:48 PM, Prabhakar Kushwaha wrote: > Instruction prefetch feature is by default enabled during core > release. > > This patch add support of disabling instruction prefetch by setting > core mask in PPA. Here each core mask bit represents a core and > prefetch is disabled at the time of core release. > > Signed-off-by: Prabhakar Kushwaha <prabhakar.kushw...@nxp.com> > --- > arch/arm/cpu/armv8/fsl-layerscape/cpu.c | 38 > ++++++++++++++++++++++ > .../armv8/fsl-layerscape/doc/README.core_prefetch | 18 ++++++++++ > 2 files changed, 56 insertions(+) > create mode 100644 arch/arm/cpu/armv8/fsl-layerscape/doc/README.core_prefetch
<snip> > diff --git a/arch/arm/cpu/armv8/fsl-layerscape/doc/README.core_prefetch > b/arch/arm/cpu/armv8/fsl-layerscape/doc/README.core_prefetch > new file mode 100644 > index 0000000..f605a4c > --- /dev/null > +++ b/arch/arm/cpu/armv8/fsl-layerscape/doc/README.core_prefetch > @@ -0,0 +1,18 @@ > +Core instruction prefetch disable > +--------------------------------- > +To disable instruction prefetch of core; hwconfig needs to be updated. > +for e.g. > +setenv hwconfig 'fsl_ddr:bank_intlv=auto;core_prefetch:disable=0x02' > + Why would one want to disable prefetch? And environmental variables are not available for some SPL boot (eg. SD) last time I check. York _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot