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There are two flags: PSCI_COMPLIANT and PSCI_USE_HVC. When set, the former signals to the OS that the firmware is PSCI compliant. The latter selects the appropriate conduit for PSCI calls by toggling between Hypervisor Calls (HVC) and Secure Monitor Calls (SMC). FADT table contains such information in ACPI 5.1, FADT table was parsed in ACPI table init and copy to struct acpi_gbl_FADT, so use the flags in struct acpi_gbl_FADT for PSCI init. Since ACPI 5.1 doesn't support self defined PSCI function IDs, which means that only PSCI 0.2+ is supported in ACPI. CC: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> CC: Catalin Marinas <catalin.marinas@arm.com> CC: Will Deacon <will.deacon@arm.com> Tested-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com> Tested-by: Yijing Wang <wangyijing@huawei.com> Tested-by: Mark Langsdorf <mlangsdo@redhat.com> Tested-by: Jon Masters <jcm@redhat.com> Tested-by: Timur Tabi <timur@codeaurora.org> Tested-by: Robert Richter <rrichter@cavium.com> Acked-by: Robert Richter <rrichter@cavium.com> Acked-by: Olof Johansson <olof@lixom.net> Acked-by: Grant Likely <grant.likely@linaro.org> Signed-off-by: Graeme Gregory <graeme.gregory@linaro.org> Signed-off-by: Tomasz Nowicki <tomasz.nowicki@linaro.org> Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org> Signed-off-by: Will Deacon <will.deacon@arm.com> |
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