On 7 July 2011 21:20, Lorenzo Pieralisi <lorenzo.pieral...@arm.com> wrote: > This patch adds the required Kconfig and Makefile entries to > enable and compile common idle code for ARM kernel. > > Common idle code depends on CPU_PM platform notifiers to trigger > save/restore of kernel subsystems like PMU, VFP, GIC. > > Signed-off-by: Lorenzo Pieralisi <lorenzo.pieral...@arm.com> > --- > arch/arm/Kconfig | 11 +++++++++++ > arch/arm/kernel/Makefile | 4 ++++ > 2 files changed, 15 insertions(+), 0 deletions(-) > > diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig > index 356f266..5b670bd 100644 > --- a/arch/arm/Kconfig > +++ b/arch/arm/Kconfig > @@ -1992,6 +1992,17 @@ config VFP > > Say N if your target does not have VFP hardware. > > +config CONTEXT_SR > + bool "Save/Restore code support for CPU/Cluster Power Management" > + depends on CPU_V7 && CPU_PM > + help > + Say Y to include Save/Restore code in the kernel. This provides > + generic infrastructure to put the code in dormant/shutdown mode > + and save/restore the required system state inclusive of L2 cache > + logic. > + > + Say N if your target does not have Power Management hardware. > +
Currently this is placed inside the "Floating point emulation" menu. "cpu power management" menu may be a better option. Also I did not find where configs CPU_PM, ARCH_USES_CPU_PM are enabled. > config VFPv3 > bool > depends on VFP > diff --git a/arch/arm/kernel/Makefile b/arch/arm/kernel/Makefile > index 8b42d58..ac931f1 100644 > --- a/arch/arm/kernel/Makefile > +++ b/arch/arm/kernel/Makefile > @@ -49,6 +49,10 @@ obj-$(CONFIG_CRASH_DUMP) += crash_dump.o > obj-$(CONFIG_SWP_EMULATE) += swp_emulate.o > CFLAGS_swp_emulate.o := -Wa,-march=armv7-a > obj-$(CONFIG_HAVE_HW_BREAKPOINT) += hw_breakpoint.o > +obj-$(CONFIG_CONTEXT_SR) += lb_lock.o sr_api.o sr_mapping.o \ > + sr_entry.o sr_arch.o sr_context.o \ > + sr_platform.o sr_power.o reset_v7.o \ > + sr_v7_helpers.o > > obj-$(CONFIG_CRUNCH) += crunch.o crunch-bits.o > AFLAGS_crunch-bits.o := -Wa,-mcpu=ep9312 > -- > 1.7.4.4 > > > _______________________________________________ linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev
