added files

2 files changed, 258 insertions, 0 deletions

diff --git a/midi-dials/Drivers/CMSIS/Core/Template/ARMv8-M/main_s.c b/midi-dials/Drivers/CMSIS/Core/Template/ARMv8-M/main_s.c
new file mode 100644
index 0000000..cde9ff0
--- /dev/null
+++ b/midi-dials/Drivers/CMSIS/Core/Template/ARMv8-M/main_s.c
@@ -0,0 +1,58 @@
+/******************************************************************************

+ * @file     main_s.c

+ * @brief    Code template for secure main function

+ * @version  V1.1.1

+ * @date     10. January 2018

+ ******************************************************************************/

+/*

+ * Copyright (c) 2013-2018 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.

+ */

+

+/* Use CMSE intrinsics */

+#include <arm_cmse.h>

+ 

+#include "RTE_Components.h"

+#include CMSIS_device_header

+ 

+/* TZ_START_NS: Start address of non-secure application */

+#ifndef TZ_START_NS

+#define TZ_START_NS (0x200000U)

+#endif

+ 

+/* typedef for non-secure callback functions */

+typedef void (*funcptr_void) (void) __attribute__((cmse_nonsecure_call));

+ 

+/* Secure main() */

+int main(void) {

+  funcptr_void NonSecure_ResetHandler;

+ 

+  /* Add user setup code for secure part here*/

+ 

+  /* Set non-secure main stack (MSP_NS) */

+  __TZ_set_MSP_NS(*((uint32_t *)(TZ_START_NS)));

+ 

+  /* Get non-secure reset handler */

+  NonSecure_ResetHandler = (funcptr_void)(*((uint32_t *)((TZ_START_NS) + 4U)));

+ 

+  /* Start non-secure state software application */

+  NonSecure_ResetHandler();

+ 

+  /* Non-secure software does not return, this code is not executed */

+  while (1) {

+    __NOP();

+  }

+}

diff --git a/midi-dials/Drivers/CMSIS/Core/Template/ARMv8-M/tz_context.c b/midi-dials/Drivers/CMSIS/Core/Template/ARMv8-M/tz_context.c
new file mode 100644
index 0000000..298bbf7
--- /dev/null
+++ b/midi-dials/Drivers/CMSIS/Core/Template/ARMv8-M/tz_context.c
@@ -0,0 +1,200 @@
+/******************************************************************************

+ * @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

+}