| // SPDX-License-Identifier: BSD-2-Clause |
| /* |
| * Copyright (c) 2017, Texas Instruments |
| * All rights reserved. |
| * |
| * 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 <arm32.h> |
| #include <kernel/thread.h> |
| #include <sm/optee_smc.h> |
| #include <sm/sm.h> |
| #include <trace.h> |
| |
| #include "api_monitor_index_a15.h" |
| |
| static enum sm_handler_ret ti_sip_handler(struct thread_smc_args *smc_args) |
| { |
| uint16_t sip_func = OPTEE_SMC_FUNC_NUM(smc_args->a0); |
| |
| switch (sip_func) { |
| case API_MONITOR_ACTLR_SETREGISTER_INDEX: |
| write_actlr(smc_args->a1); |
| isb(); |
| smc_args->a0 = OPTEE_SMC_RETURN_OK; |
| break; |
| case API_MONITOR_TIMER_SETCNTFRQ_INDEX: |
| write_cntfrq(smc_args->a1); |
| isb(); |
| smc_args->a0 = OPTEE_SMC_RETURN_OK; |
| break; |
| default: |
| EMSG("Invalid SIP function code: 0x%04"PRIx16, sip_func); |
| smc_args->a0 = OPTEE_SMC_RETURN_EBADCMD; |
| break; |
| } |
| |
| return SM_HANDLER_SMC_HANDLED; |
| } |
| |
| enum sm_handler_ret sm_platform_handler(struct sm_ctx *ctx) |
| { |
| uint32_t *nsec_r0 = (uint32_t *)(&ctx->nsec.r0); |
| uint16_t smc_owner = OPTEE_SMC_OWNER_NUM(*nsec_r0); |
| |
| switch (smc_owner) { |
| case OPTEE_SMC_OWNER_SIP: |
| return ti_sip_handler((struct thread_smc_args *)nsec_r0); |
| default: |
| return SM_HANDLER_PENDING_SMC; |
| } |
| } |