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authorjmcneill <jmcneill@NetBSD.org>2021-08-06 19:38:53 +0000
committerjmcneill <jmcneill@NetBSD.org>2021-08-06 19:38:53 +0000
commit473dff52765c58f047fee39743de09d06397c8c3 (patch)
tree54c0c998ac9b87afa1a34f2b92a097d09a18eeb3 /sys/dev/microcode/tools
parentf379a12fe6343e21803dd2221f44996f9e078b5e (diff)
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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