diff options
Diffstat (limited to 'fw/hid-dials/Drivers/CMSIS/Core/Template/ARMv8-M/tz_context.c')
| -rw-r--r-- | fw/hid-dials/Drivers/CMSIS/Core/Template/ARMv8-M/tz_context.c | 200 |
1 files changed, 0 insertions, 200 deletions
diff --git a/fw/hid-dials/Drivers/CMSIS/Core/Template/ARMv8-M/tz_context.c b/fw/hid-dials/Drivers/CMSIS/Core/Template/ARMv8-M/tz_context.c deleted file mode 100644 index 298bbf7..0000000 --- a/fw/hid-dials/Drivers/CMSIS/Core/Template/ARMv8-M/tz_context.c +++ /dev/null @@ -1,200 +0,0 @@ -/******************************************************************************
- * @file tz_context.c
- * @brief Context Management for Armv8-M TrustZone - Sample implementation
- * @version V1.1.1
- * @date 10. January 2018
- ******************************************************************************/
-/*
- * Copyright (c) 2016-2018 Arm Limited. All rights reserved.
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Licensed under the Apache License, Version 2.0 (the License); you may
- * not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an AS IS BASIS, WITHOUT
- * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "RTE_Components.h"
-#include CMSIS_device_header
-#include "tz_context.h"
-
-/// Number of process slots (threads may call secure library code)
-#ifndef TZ_PROCESS_STACK_SLOTS
-#define TZ_PROCESS_STACK_SLOTS 8U
-#endif
-
-/// Stack size of the secure library code
-#ifndef TZ_PROCESS_STACK_SIZE
-#define TZ_PROCESS_STACK_SIZE 256U
-#endif
-
-typedef struct {
- uint32_t sp_top; // stack space top
- uint32_t sp_limit; // stack space limit
- uint32_t sp; // current stack pointer
-} stack_info_t;
-
-static stack_info_t ProcessStackInfo [TZ_PROCESS_STACK_SLOTS];
-static uint64_t ProcessStackMemory[TZ_PROCESS_STACK_SLOTS][TZ_PROCESS_STACK_SIZE/8U];
-static uint32_t ProcessStackFreeSlot = 0xFFFFFFFFU;
-
-
-/// Initialize secure context memory system
-/// \return execution status (1: success, 0: error)
-__attribute__((cmse_nonsecure_entry))
-uint32_t TZ_InitContextSystem_S (void) {
- uint32_t n;
-
- if (__get_IPSR() == 0U) {
- return 0U; // Thread Mode
- }
-
- for (n = 0U; n < TZ_PROCESS_STACK_SLOTS; n++) {
- ProcessStackInfo[n].sp = 0U;
- ProcessStackInfo[n].sp_limit = (uint32_t)&ProcessStackMemory[n];
- ProcessStackInfo[n].sp_top = (uint32_t)&ProcessStackMemory[n] + TZ_PROCESS_STACK_SIZE;
- *((uint32_t *)ProcessStackMemory[n]) = n + 1U;
- }
- *((uint32_t *)ProcessStackMemory[--n]) = 0xFFFFFFFFU;
-
- ProcessStackFreeSlot = 0U;
-
- // Default process stack pointer and stack limit
- __set_PSPLIM((uint32_t)ProcessStackMemory);
- __set_PSP ((uint32_t)ProcessStackMemory);
-
- // Privileged Thread Mode using PSP
- __set_CONTROL(0x02U);
-
- return 1U; // Success
-}
-
-
-/// Allocate context memory for calling secure software modules in TrustZone
-/// \param[in] module identifies software modules called from non-secure mode
-/// \return value != 0 id TrustZone memory slot identifier
-/// \return value 0 no memory available or internal error
-__attribute__((cmse_nonsecure_entry))
-TZ_MemoryId_t TZ_AllocModuleContext_S (TZ_ModuleId_t module) {
- uint32_t slot;
-
- (void)module; // Ignore (fixed Stack size)
-
- if (__get_IPSR() == 0U) {
- return 0U; // Thread Mode
- }
-
- if (ProcessStackFreeSlot == 0xFFFFFFFFU) {
- return 0U; // No slot available
- }
-
- slot = ProcessStackFreeSlot;
- ProcessStackFreeSlot = *((uint32_t *)ProcessStackMemory[slot]);
-
- ProcessStackInfo[slot].sp = ProcessStackInfo[slot].sp_top;
-
- return (slot + 1U);
-}
-
-
-/// Free context memory that was previously allocated with \ref TZ_AllocModuleContext_S
-/// \param[in] id TrustZone memory slot identifier
-/// \return execution status (1: success, 0: error)
-__attribute__((cmse_nonsecure_entry))
-uint32_t TZ_FreeModuleContext_S (TZ_MemoryId_t id) {
- uint32_t slot;
-
- if (__get_IPSR() == 0U) {
- return 0U; // Thread Mode
- }
-
- if ((id == 0U) || (id > TZ_PROCESS_STACK_SLOTS)) {
- return 0U; // Invalid ID
- }
-
- slot = id - 1U;
-
- if (ProcessStackInfo[slot].sp == 0U) {
- return 0U; // Inactive slot
- }
- ProcessStackInfo[slot].sp = 0U;
-
- *((uint32_t *)ProcessStackMemory[slot]) = ProcessStackFreeSlot;
- ProcessStackFreeSlot = slot;
-
- return 1U; // Success
-}
-
-
-/// Load secure context (called on RTOS thread context switch)
-/// \param[in] id TrustZone memory slot identifier
-/// \return execution status (1: success, 0: error)
-__attribute__((cmse_nonsecure_entry))
-uint32_t TZ_LoadContext_S (TZ_MemoryId_t id) {
- uint32_t slot;
-
- if ((__get_IPSR() == 0U) || ((__get_CONTROL() & 2U) == 0U)) {
- return 0U; // Thread Mode or using Main Stack for threads
- }
-
- if ((id == 0U) || (id > TZ_PROCESS_STACK_SLOTS)) {
- return 0U; // Invalid ID
- }
-
- slot = id - 1U;
-
- if (ProcessStackInfo[slot].sp == 0U) {
- return 0U; // Inactive slot
- }
-
- // Setup process stack pointer and stack limit
- __set_PSPLIM(ProcessStackInfo[slot].sp_limit);
- __set_PSP (ProcessStackInfo[slot].sp);
-
- return 1U; // Success
-}
-
-
-/// Store secure context (called on RTOS thread context switch)
-/// \param[in] id TrustZone memory slot identifier
-/// \return execution status (1: success, 0: error)
-__attribute__((cmse_nonsecure_entry))
-uint32_t TZ_StoreContext_S (TZ_MemoryId_t id) {
- uint32_t slot;
- uint32_t sp;
-
- if ((__get_IPSR() == 0U) || ((__get_CONTROL() & 2U) == 0U)) {
- return 0U; // Thread Mode or using Main Stack for threads
- }
-
- if ((id == 0U) || (id > TZ_PROCESS_STACK_SLOTS)) {
- return 0U; // Invalid ID
- }
-
- slot = id - 1U;
-
- if (ProcessStackInfo[slot].sp == 0U) {
- return 0U; // Inactive slot
- }
-
- sp = __get_PSP();
- if ((sp < ProcessStackInfo[slot].sp_limit) ||
- (sp > ProcessStackInfo[slot].sp_top)) {
- return 0U; // SP out of range
- }
- ProcessStackInfo[slot].sp = sp;
-
- // Default process stack pointer and stack limit
- __set_PSPLIM((uint32_t)ProcessStackMemory);
- __set_PSP ((uint32_t)ProcessStackMemory);
-
- return 1U; // Success
-}
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