mirror of https://github.com/ARMmbed/mbed-os.git
100 lines
3.6 KiB
C
100 lines
3.6 KiB
C
/* Copyright (c) 2017-2018 ARM Limited
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <string.h>
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#include "cmsis_os2.h"
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#include "spm_server.h"
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#include "spm_panic.h"
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#include "psa_server_test_part2_partition.h"
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static psa_msg_t msg = {0};
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void part2_main(void *ptr)
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{
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uint32_t signals = 0;
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size_t len = 0;
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char *str = NULL;
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while (1) {
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signals = psa_wait_any(PSA_BLOCK);
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if (0 == (signals & (ROT_SRV_REVERSE_MSK | ROT_SRV_DB_TST_MSK))) {
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SPM_PANIC("returned from psa_wait_any without ROT_SRV_REVERSE_MSK or ROT_SRV_DB_TST_MSK bit on\n");
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}
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if (signals & ROT_SRV_REVERSE_MSK) {
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psa_get(ROT_SRV_REVERSE_MSK, &msg);
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switch (msg.type) {
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case PSA_IPC_CALL: {
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if ((msg.in_size[0] + msg.in_size[1] + msg.in_size[2]) == 0) {
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SPM_PANIC("got a zero message size to REVERSE ROT_SRV\n");
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}
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len = msg.in_size[0];
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str = (char *)malloc(sizeof(char) * len);
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if (NULL == str) {
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SPM_PANIC("memory allocation failure\n");
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}
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psa_read(msg.handle, 0, str, len);
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for (size_t i = 0; i < len / 2; i ++) {
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char a = str[i];
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str[i] = str[len - i - 1];
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str[len - i - 1] = a;
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}
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psa_write(msg.handle, 0, str, len);
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free(str);
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str = NULL;
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break;
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}
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case PSA_IPC_CONNECT:
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case PSA_IPC_DISCONNECT:
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break;
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default:
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SPM_PANIC("Unexpected message type %d!", (int)(msg.type));
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break;
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}
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psa_reply(msg.handle, PSA_SUCCESS);
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} else { // -- Doorbell test
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psa_get(ROT_SRV_DB_TST_MSK, &msg);
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switch (msg.type) {
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case PSA_IPC_CALL: {
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int32_t caller_part_id = psa_identity(msg.handle);
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// Doorbell contract is valid only between secure partitions
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if (PSA_NSPE_IDENTIFIER == caller_part_id) {
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SPM_PANIC("Caller partition is non secure\n");
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}
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// In doorbell scenario the server first calls psa_reply()
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psa_reply(msg.handle, PSA_SUCCESS);
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// Then the servers waits to some driver making long calculations - imitate using osDelay()
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osDelay(20);
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// After work is done, ring the doorbell
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psa_notify(caller_part_id);
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break;
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}
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case PSA_IPC_CONNECT:
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case PSA_IPC_DISCONNECT:
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psa_reply(msg.handle, PSA_SUCCESS);
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break;
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default:
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SPM_PANIC("Unexpected message type %d!", (int)(msg.type));
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break;
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}
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}
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}
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}
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