Arm: Add support for SMC Calling Convention

Arm DEN0028 defines a calling mechanism used with Secure Monitor Call (SMC)
and Hypervisor Call (HVC) instructions. To discover SMCCC, we must:

1) Find

Arm: Add support for SMC Calling Convention

Arm DEN0028 defines a calling mechanism used with Secure Monitor Call (SMC)
and Hypervisor Call (HVC) instructions. To discover SMCCC, we must:

1) Find the PSCI conduit (either via ACPI FADT, or Device Tree)
2) Use PSCI_VERSION to determine whether PSCI_FEATURES is supported
3) Call PSCI_FEATURES with SMCCC_VERSION to determine the implementation
version.

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Rename of_match_compat_data() to of_compatible_match(). Similarly,
rename of_search_compatible() to of_compatible_lookup().

Standardize on of_compatible_match() for driver matching, and adapt
all c

Rename of_match_compat_data() to of_compatible_match(). Similarly,
rename of_search_compatible() to of_compatible_lookup().

Standardize on of_compatible_match() for driver matching, and adapt
all call sites.

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KNF

cleanup aarch64 mpstart and fdt bootstrap
* arm_cpu_hatch_arg is a bad idea. avoid serializing CPU startup, and eliminate arm_cpu_hatch_arg.
in mpstart, resolve own cpu index using array of cpu_m

cleanup aarch64 mpstart and fdt bootstrap
* arm_cpu_hatch_arg is a bad idea. avoid serializing CPU startup, and eliminate arm_cpu_hatch_arg.
in mpstart, resolve own cpu index using array of cpu_mpidr[] (aarch64)
* add support fdt enable-method "spin-table"
* add support fdt enable-method "brcm,bcm2836-smp" (for 32bit RaspberryPi)
* use arm_fdt_cpu_bootstrap() instead of psci_fdt_bootstrap()
* rename "arm/fdt/psci_fdt.h" to "arm/fdt/psci_fdtvar.h" because of conflict of include file for needs-flag
* add devmap for cpu spin-table of raspberrypi3/aarch64
* no need to force hatch APs for raspberrypi3/arm32 ifndef MULTIPROCESSOR.
* fix to work pmap_extract(kerneltext/data/bss) even if before calling pmap_bootstrap

idea to use cpu_mpidr[] by jmcneill@. reviewd by skrll@. thanks.

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Boot APs with status "disabled" if they have an enable-method property

Fix previous; PSCI_CPU_ON requires an MPIDR!

add support multiple cpu clusters.
* pass cpu index as an argument to secondary processors when hatching.
* keep cpu cache confituration per cpu clusters.

Hello big.LITTLE!

/cpus node may have any nodes except cpu. count only nodes of device_type "cpu"

Need to use fdtbus_get_reg64 for mpidr

Provide and use cpu_mpidr_aff_read in psci_fdt_bootstrap

Pass full mpidr (instead of just aff0) to psci_cpu_on

Add missing pointer <-> integer casts
Use PRI?64 to print uint64_t instead 'll?'

Fix non-MULTIPROCESSOR build

Fix arm32 build

Add aarch64 support.

Switch to PSCI 0.1 mode only if the first compatible string listed on /psci is "arm,psci"

Fix PSCI 0.1 detection.

Export a psci_fdt_reset function, usable from FDT platform code.

Use PSCI for reset and poweroff when available.

Wrap MP-specific code in ifdef MULTIPROCESSOR

Add support for ARM Power State Coordination Interface (PSCI).