| // 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 <stdint.h> |
| #include <sm/optee_smc.h> |
| #include <sm/psci.h> |
| #include <sm/sm.h> |
| #include <sm/std_smc.h> |
| #include <tee/uuid.h> |
| #include <trace.h> |
| |
| static const TEE_UUID uuid = { |
| 0x5f8b97df, 0x2d0d, 0x4ad2, |
| {0x98, 0xd2, 0x74, 0xf4, 0x38, 0x27, 0x98, 0xbb}, |
| }; |
| |
| void smc_std_handler(struct thread_smc_args *args, struct sm_nsec_ctx *nsec) |
| { |
| uint32_t smc_fid = args->a0; |
| |
| if (is_psci_fid(smc_fid)) { |
| tee_psci_handler(args, nsec); |
| return; |
| } |
| |
| switch (smc_fid) { |
| case ARM_STD_SVC_CALL_COUNT: |
| /* PSCI is the only STD service implemented */ |
| args->a0 = PSCI_NUM_CALLS; |
| break; |
| case ARM_STD_SVC_UID: |
| args->a0 = uuid.timeLow; |
| args->a1 = (uuid.timeHiAndVersion << 16) | uuid.timeMid; |
| args->a2 = (uuid.clockSeqAndNode[3] << 24) | |
| (uuid.clockSeqAndNode[2] << 16) | |
| (uuid.clockSeqAndNode[1] << 8) | |
| uuid.clockSeqAndNode[0]; |
| args->a3 = (uuid.clockSeqAndNode[7] << 24) | |
| (uuid.clockSeqAndNode[6] << 16) | |
| (uuid.clockSeqAndNode[5] << 8) | |
| uuid.clockSeqAndNode[4]; |
| break; |
| case ARM_STD_SVC_VERSION: |
| args->a0 = STD_SVC_VERSION_MAJOR; |
| args->a1 = STD_SVC_VERSION_MINOR; |
| break; |
| default: |
| args->a0 = OPTEE_SMC_RETURN_UNKNOWN_FUNCTION; |
| break; |
| } |
| } |