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.pieralisi@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. + 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