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| author | Hanjun Guo <hanjun.guo@linaro.org> | 2015-03-24 22:02:45 +0800 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2015-03-25 11:52:42 +0000 |
| commit | fccb9a81fd08b61bed91ddef88341694f8ecbfd1 (patch) | |
| tree | 23bc0d3408923674d343960a8a80153a34da08eb /arch/arm64/include/asm/acpi.h | |
| parent | 4c1c8d7a7ebc8b909493a14b21b233e5377b69aa (diff) | |
| download | talos-obmc-linux-fccb9a81fd08b61bed91ddef88341694f8ecbfd1.tar.gz talos-obmc-linux-fccb9a81fd08b61bed91ddef88341694f8ecbfd1.zip | |
ARM64 / ACPI: Parse MADT for SMP initialization
MADT contains the information for MPIDR which is essential for
SMP initialization, parse the GIC cpu interface structures to
get the MPIDR value and map it to cpu_logical_map(), and add
enabled cpu with valid MPIDR into cpu_possible_map.
ACPI 5.1 only has two explicit methods to boot up SMP, PSCI and
Parking protocol, but the Parking protocol is only specified for
ARMv7 now, so make PSCI as the only way for the SMP boot protocol
before some updates for the ACPI spec or the Parking protocol spec.
Parking protocol patches for SMP boot will be sent to upstream when
the new version of Parking protocol is ready.
CC: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
CC: Catalin Marinas <catalin.marinas@arm.com>
CC: Will Deacon <will.deacon@arm.com>
CC: Mark Rutland <mark.rutland@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>
Reviewed-by: Grant Likely <grant.likely@linaro.org>
Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
Signed-off-by: Tomasz Nowicki <tomasz.nowicki@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64/include/asm/acpi.h')
| -rw-r--r-- | arch/arm64/include/asm/acpi.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/acpi.h b/arch/arm64/include/asm/acpi.h index 9ea650c991c9..9719921aedb1 100644 --- a/arch/arm64/include/asm/acpi.h +++ b/arch/arm64/include/asm/acpi.h @@ -71,10 +71,12 @@ static inline bool acpi_has_cpu_in_madt(void) } static inline void arch_fix_phys_package_id(int num, u32 slot) { } +void __init acpi_init_cpus(void); #else static inline bool acpi_psci_present(void) { return false; } static inline bool acpi_psci_use_hvc(void) { return false; } +static inline void acpi_init_cpus(void) { } #endif /* CONFIG_ACPI */ #endif /*_ASM_ACPI_H*/ |
