ACPI / processor: Make it possible to get CPU hardware ID via GICC

Introduce a new function map_gicc_mpidr() to allow MPIDRs to be obtained
from the GICC Structure introduced by ACPI 5.1, since MPIDR for ARM64 is
64-bit, so typedef u64 for phys_cpuid_t.

The ARM architecture defines the MPIDR register as the CPU hardware
identifier. This patch adds the code infrastructure to retrieve the MPIDR
values from the ARM ACPI GICC structure in order to look-up the kernel CPU
hardware ids required by the ACPI core code to identify CPUs.

CC: Rafael J. Wysocki <[email protected]>
CC: Catalin Marinas <[email protected]>
CC: Will Deacon <[email protected]>
Tested-by: Suravee Suthikulpanit <[email protected]>
Tested-by: Yijing Wang <[email protected]>
Tested-by: Mark Langsdorf <[email protected]>
Tested-by: Jon Masters <[email protected]>
Tested-by: Timur Tabi <[email protected]>
Tested-by: Robert Richter <[email protected]>
Acked-by: Robert Richter <[email protected]>
Acked-by: Lorenzo Pieralisi <[email protected]>
Acked-by: Rafael J. Wysocki <[email protected]>
Reviewed-by: Grant Likely <[email protected]>
Signed-off-by: Hanjun Guo <[email protected]>
Signed-off-by: Will Deacon <[email protected]>

0 files changed, 0 insertions, 0 deletions