arm64: kernel: add PM build infrastructure

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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>

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This commit is contained in:

Lorenzo Pieralisi 2013-11-07 18:37:14 +00:00

parent b8824dfe1b

commit 166936bace

2 changed files with 14 additions and 0 deletions

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13

arch/arm64/Kconfig

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1

arch/arm64/kernel/Makefile

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