| // SPDX-License-Identifier: BSD-2-Clause |
| /* |
| * Copyright (C) 2016 Freescale Semiconductor, Inc. |
| * All rights reserved. |
| * |
| * Peng Fan <peng.fan@nxp.com> |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright notice, |
| * this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright notice, |
| * this list of conditions and the following disclaimer in the documentation |
| * and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
| * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include <console.h> |
| #include <kernel/generic_boot.h> |
| #include <kernel/thread.h> |
| #include <stdint.h> |
| #include <sm/optee_smc.h> |
| #include <sm/psci.h> |
| #include <sm/sm.h> |
| #include <trace.h> |
| |
| __weak uint32_t psci_version(void) |
| { |
| return PSCI_VERSION_0_2; |
| } |
| |
| __weak int psci_cpu_suspend(uint32_t power_state __unused, |
| uintptr_t entry __unused, |
| uint32_t context_id __unused, |
| struct sm_nsec_ctx *nsec __unused) |
| { |
| return PSCI_RET_NOT_SUPPORTED; |
| } |
| |
| __weak int psci_cpu_off(void) |
| { |
| return PSCI_RET_NOT_SUPPORTED; |
| } |
| |
| __weak int psci_cpu_on(uint32_t cpu_id __unused, uint32_t entry __unused, |
| uint32_t context_id __unused) |
| { |
| return PSCI_RET_NOT_SUPPORTED; |
| } |
| |
| __weak int psci_affinity_info(uint32_t affinity __unused, |
| uint32_t lowest_affnity_level __unused) |
| { |
| return PSCI_RET_NOT_SUPPORTED; |
| } |
| |
| __weak int psci_migrate(uint32_t cpu_id __unused) |
| { |
| return PSCI_RET_NOT_SUPPORTED; |
| } |
| |
| __weak int psci_migrate_info_type(void) |
| { |
| return PSCI_RET_NOT_SUPPORTED; |
| } |
| |
| __weak int psci_migrate_info_up_cpu(void) |
| { |
| return PSCI_RET_NOT_SUPPORTED; |
| } |
| |
| __weak void psci_system_off(void) |
| { |
| } |
| |
| __weak void psci_system_reset(void) |
| { |
| } |
| |
| __weak int psci_features(uint32_t psci_fid __unused) |
| { |
| return PSCI_RET_NOT_SUPPORTED; |
| } |
| |
| __weak int psci_node_hw_state(uint32_t cpu_id __unused, |
| uint32_t power_level __unused) |
| { |
| return PSCI_RET_NOT_SUPPORTED; |
| } |
| |
| __weak int psci_system_suspend(uintptr_t entry __unused, |
| uint32_t context_id __unused, |
| struct sm_nsec_ctx *nsec __unused) |
| { |
| return PSCI_RET_NOT_SUPPORTED; |
| } |
| |
| __weak int psci_stat_residency(uint32_t cpu_id __unused, |
| uint32_t power_state __unused) |
| { |
| return PSCI_RET_NOT_SUPPORTED; |
| } |
| |
| __weak int psci_stat_count(uint32_t cpu_id __unused, |
| uint32_t power_state __unused) |
| { |
| return PSCI_RET_NOT_SUPPORTED; |
| } |
| |
| void tee_psci_handler(struct thread_smc_args *args, struct sm_nsec_ctx *nsec) |
| { |
| uint32_t smc_fid = args->a0; |
| uint32_t a1 = args->a1; |
| uint32_t a2 = args->a2; |
| uint32_t a3 = args->a3; |
| |
| switch (smc_fid) { |
| case PSCI_VERSION: |
| args->a0 = psci_version(); |
| break; |
| case PSCI_CPU_SUSPEND: |
| args->a0 = psci_cpu_suspend(a1, a2, a3, nsec); |
| break; |
| case PSCI_CPU_OFF: |
| args->a0 = psci_cpu_off(); |
| break; |
| case PSCI_CPU_ON: |
| args->a0 = psci_cpu_on(a1, a2, a3); |
| break; |
| case PSCI_AFFINITY_INFO: |
| args->a0 = psci_affinity_info(a1, a2); |
| break; |
| case PSCI_MIGRATE: |
| args->a0 = psci_migrate(a1); |
| break; |
| case PSCI_MIGRATE_INFO_TYPE: |
| args->a0 = psci_migrate_info_type(); |
| break; |
| case PSCI_MIGRATE_INFO_UP_CPU: |
| args->a0 = psci_migrate_info_up_cpu(); |
| break; |
| case PSCI_SYSTEM_OFF: |
| psci_system_off(); |
| while (1) |
| ; |
| break; |
| case PSCI_SYSTEM_RESET: |
| psci_system_reset(); |
| while (1) |
| ; |
| break; |
| case PSCI_PSCI_FEATURES: |
| args->a0 = psci_features(a1); |
| break; |
| case PSCI_NODE_HW_STATE: |
| args->a0 = psci_node_hw_state(a1, a2); |
| break; |
| case PSCI_SYSTEM_SUSPEND: |
| args->a0 = psci_system_suspend(a1, a2, nsec); |
| break; |
| default: |
| args->a0 = OPTEE_SMC_RETURN_UNKNOWN_FUNCTION; |
| break; |
| } |
| } |