// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2020 Arm Limited */ #define pr_fmt(fmt) "smccc: " fmt #include <linux/cache.h> #include <linux/init.h> #include <linux/arm-smccc.h> #include <linux/kernel.h> #include <asm/archrandom.h> static u32 smccc_version = ARM_SMCCC_VERSION_1_0; static enum arm_smccc_conduit smccc_conduit = SMCCC_CONDUIT_NONE; bool __ro_after_init smccc_trng_available = false; void __init arm_smccc_version_init(u32 version, enum arm_smccc_conduit conduit) { smccc_version = version; smccc_conduit = conduit; smccc_trng_available = smccc_probe_trng(); } enum arm_smccc_conduit arm_smccc_1_1_get_conduit(void) { if (smccc_version < ARM_SMCCC_VERSION_1_1) return SMCCC_CONDUIT_NONE; return smccc_conduit; } EXPORT_SYMBOL_GPL(arm_smccc_1_1_get_conduit); u32 arm_smccc_get_version(void) { return smccc_version; } EXPORT_SYMBOL_GPL(arm_smccc_get_version);