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This patch adds the required makefile and kconfig entries to enable PM
for arm64 systems.
The kernel relies on the cpu_{suspend}/{resume} infrastructure to
properly save the context for a CPU and put it to sleep, hence this
patch adds the config option required to enable cpu_{suspend}/{resume}
API.
In order to rely on the CPU PM implementation for saving and restoring
of CPU subsystems like GIC and PMU, the arch Kconfig must be also
augmented to select the CONFIG_CPU_PM option when SUSPEND or CPU_IDLE
kernel implementations are selected.
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
31 lines
1.0 KiB
Makefile
31 lines
1.0 KiB
Makefile
#
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# Makefile for the linux kernel.
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#
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CPPFLAGS_vmlinux.lds := -DTEXT_OFFSET=$(TEXT_OFFSET)
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AFLAGS_head.o := -DTEXT_OFFSET=$(TEXT_OFFSET)
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# Object file lists.
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arm64-obj-y := cputable.o debug-monitors.o entry.o irq.o fpsimd.o \
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entry-fpsimd.o process.o ptrace.o setup.o signal.o \
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sys.o stacktrace.o time.o traps.o io.o vdso.o \
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hyp-stub.o psci.o cpu_ops.o
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arm64-obj-$(CONFIG_COMPAT) += sys32.o kuser32.o signal32.o \
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sys_compat.o
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arm64-obj-$(CONFIG_MODULES) += arm64ksyms.o module.o
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arm64-obj-$(CONFIG_SMP) += smp.o smp_spin_table.o
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arm64-obj-$(CONFIG_HW_PERF_EVENTS) += perf_event.o
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arm64-obj-$(CONFIG_HAVE_HW_BREAKPOINT)+= hw_breakpoint.o
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arm64-obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
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arm64-obj-$(CONFIG_ARM64_CPU_SUSPEND) += sleep.o suspend.o
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obj-y += $(arm64-obj-y) vdso/
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obj-m += $(arm64-obj-m)
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head-y := head.o
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extra-y := $(head-y) vmlinux.lds
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# vDSO - this must be built first to generate the symbol offsets
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$(call objectify,$(arm64-obj-y)): $(obj)/vdso/vdso-offsets.h
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$(obj)/vdso/vdso-offsets.h: $(obj)/vdso
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