zephyr/drivers/pm_cpu_ops/CMakeLists.txt

# SPDX-License-Identifier: Apache-2.0

zephyr_sources_ifdef(CONFIG_PM_CPU_OPS pm_cpu_ops_weak_impl.c)

zephyr_sources_ifdef(CONFIG_PM_CPU_OPS_PSCI pm_cpu_ops_psci.c)
aarch64: pm_cpu_ops: Introduce pm_cpu_ops subsystem AArch64 has support for PSCI. This is especially useful for SMP because PSCI is used to power on the secordary cores. When the PSCI driver was introduced in Zephyr it was designed to rely on a very PSCI-centric subsystem / interface. There are two kinds of problems with this choice: 1. PSCI is only defined for the non-secure world and it is designed to boot CPU cores into non-secure state (that means that PSCI is only supposed to work if Zephyr is running in non-secure state) 2. There can be other ways or standards used to start / stop a core different from PSCI This patch is trying to fix the original wrong assumption by making the interface / subsystem a generic one, called 'pm_cpu_ops', and using PSCI only as an actual driver that is a user of this new interface / subsystem. For now the new subsystem is only exposing two methods: cpu_on and cpu_off, others will probably follow according to the needs. Signed-off-by: Carlo Caione <ccaione@baylibre.com> 2021-03-01 15:57:15 +08:00			`# SPDX-License-Identifier: Apache-2.0`

			`zephyr_sources_ifdef(CONFIG_PM_CPU_OPS pm_cpu_ops_weak_impl.c)`

			`zephyr_sources_ifdef(CONFIG_PM_CPU_OPS_PSCI pm_cpu_ops_psci.c)`