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-rw-r--r--RTOS2/Source/os_systick.c132
-rw-r--r--RTOS2/Source/os_tick_gtim.c187
-rw-r--r--RTOS2/Source/os_tick_ptim.c165
3 files changed, 484 insertions, 0 deletions
diff --git a/RTOS2/Source/os_systick.c b/RTOS2/Source/os_systick.c
new file mode 100644
index 0000000..985a9d9
--- /dev/null
+++ b/RTOS2/Source/os_systick.c
@@ -0,0 +1,132 @@
+/**************************************************************************//**
+ * @file os_systick.c
+ * @brief CMSIS OS Tick SysTick implementation
+ * @version V1.0.1
+ * @date 24. November 2017
+ ******************************************************************************/
+/*
+ * Copyright (c) 2017-2017 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 "os_tick.h"
+
+//lint -emacro((923,9078),SCB,SysTick) "cast from unsigned long to pointer"
+#include "RTE_Components.h"
+#include CMSIS_device_header
+
+#ifdef SysTick
+
+#ifndef SYSTICK_IRQ_PRIORITY
+#define SYSTICK_IRQ_PRIORITY 0xFFU
+#endif
+
+static uint8_t PendST;
+
+// Setup OS Tick.
+__WEAK int32_t OS_Tick_Setup (uint32_t freq, IRQHandler_t handler) {
+ uint32_t load;
+ (void)handler;
+
+ if (freq == 0U) {
+ //lint -e{904} "Return statement before end of function"
+ return (-1);
+ }
+
+ load = (SystemCoreClock / freq) - 1U;
+ if (load > 0x00FFFFFFU) {
+ //lint -e{904} "Return statement before end of function"
+ return (-1);
+ }
+
+ // Set SysTick Interrupt Priority
+#if ((defined(__ARM_ARCH_8M_MAIN__) && (__ARM_ARCH_8M_MAIN__ != 0)) || \
+ (defined(__CORTEX_M) && (__CORTEX_M == 7U)))
+ SCB->SHPR[11] = SYSTICK_IRQ_PRIORITY;
+#elif (defined(__ARM_ARCH_8M_BASE__) && (__ARM_ARCH_8M_BASE__ != 0))
+ SCB->SHPR[1] |= ((uint32_t)SYSTICK_IRQ_PRIORITY << 24);
+#elif ((defined(__ARM_ARCH_7M__) && (__ARM_ARCH_7M__ != 0)) || \
+ (defined(__ARM_ARCH_7EM__) && (__ARM_ARCH_7EM__ != 0)))
+ SCB->SHP[11] = SYSTICK_IRQ_PRIORITY;
+#elif (defined(__ARM_ARCH_6M__) && (__ARM_ARCH_6M__ != 0))
+ SCB->SHP[1] |= ((uint32_t)SYSTICK_IRQ_PRIORITY << 24);
+#else
+#error "Unknown ARM Core!"
+#endif
+
+ SysTick->CTRL = SysTick_CTRL_CLKSOURCE_Msk | SysTick_CTRL_TICKINT_Msk;
+ SysTick->LOAD = load;
+ SysTick->VAL = 0U;
+
+ PendST = 0U;
+
+ return (0);
+}
+
+/// Enable OS Tick.
+__WEAK void OS_Tick_Enable (void) {
+
+ if (PendST != 0U) {
+ PendST = 0U;
+ SCB->ICSR = SCB_ICSR_PENDSTSET_Msk;
+ }
+
+ SysTick->CTRL |= SysTick_CTRL_ENABLE_Msk;
+}
+
+/// Disable OS Tick.
+__WEAK void OS_Tick_Disable (void) {
+
+ SysTick->CTRL &= ~SysTick_CTRL_ENABLE_Msk;
+
+ if ((SCB->ICSR & SCB_ICSR_PENDSTSET_Msk) != 0U) {
+ SCB->ICSR = SCB_ICSR_PENDSTCLR_Msk;
+ PendST = 1U;
+ }
+}
+
+// Acknowledge OS Tick IRQ.
+__WEAK void OS_Tick_AcknowledgeIRQ (void) {
+ (void)SysTick->CTRL;
+}
+
+// Get OS Tick IRQ number.
+__WEAK int32_t OS_Tick_GetIRQn (void) {
+ return ((int32_t)SysTick_IRQn);
+}
+
+// Get OS Tick clock.
+__WEAK uint32_t OS_Tick_GetClock (void) {
+ return (SystemCoreClock);
+}
+
+// Get OS Tick interval.
+__WEAK uint32_t OS_Tick_GetInterval (void) {
+ return (SysTick->LOAD + 1U);
+}
+
+// Get OS Tick count value.
+__WEAK uint32_t OS_Tick_GetCount (void) {
+ uint32_t load = SysTick->LOAD;
+ return (load - SysTick->VAL);
+}
+
+// Get OS Tick overflow status.
+__WEAK uint32_t OS_Tick_GetOverflow (void) {
+ return ((SysTick->CTRL >> 16) & 1U);
+}
+
+#endif // SysTick
diff --git a/RTOS2/Source/os_tick_gtim.c b/RTOS2/Source/os_tick_gtim.c
new file mode 100644
index 0000000..22cfa93
--- /dev/null
+++ b/RTOS2/Source/os_tick_gtim.c
@@ -0,0 +1,187 @@
+/**************************************************************************//**
+ * @file os_tick_gtim.c
+ * @brief CMSIS OS Tick implementation for Generic Timer
+ * @version V1.0.1
+ * @date 24. November 2017
+ ******************************************************************************/
+/*
+ * Copyright (c) 2017 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 "os_tick.h"
+#include "irq_ctrl.h"
+
+#include "RTE_Components.h"
+#include CMSIS_device_header
+
+#ifndef GTIM_IRQ_PRIORITY
+#define GTIM_IRQ_PRIORITY 0xFFU
+#endif
+
+#ifndef GTIM_IRQ_NUM
+#define GTIM_IRQ_NUM SecurePhyTimer_IRQn
+#endif
+
+// Timer interrupt pending flag
+static uint8_t GTIM_PendIRQ;
+
+// Timer tick frequency
+static uint32_t GTIM_Clock;
+
+// Timer load value
+static uint32_t GTIM_Load;
+
+// Setup OS Tick.
+int32_t OS_Tick_Setup (uint32_t freq, IRQHandler_t handler) {
+ uint32_t prio, bits;
+
+ if (freq == 0U) {
+ return (-1);
+ }
+
+ GTIM_PendIRQ = 0U;
+
+ // Get timer clock
+#ifdef SCTR_BASE
+ GTIM_Clock = *(uint32_t*)(SCTR_BASE+0x20);
+#else
+ // FVP REFCLK CNTControl 100MHz
+ GTIM_Clock = 100000000UL;
+#endif
+
+ PL1_SetCounterFrequency(GTIM_Clock);
+
+ // Calculate load value
+ GTIM_Load = (GTIM_Clock / freq) - 1U;
+
+ // Disable Generic Timer and set load value
+ PL1_SetControl(0U);
+ PL1_SetLoadValue(GTIM_Load);
+
+ // Disable corresponding IRQ
+ IRQ_Disable(GTIM_IRQ_NUM);
+ IRQ_ClearPending(GTIM_IRQ_NUM);
+
+ // Determine number of implemented priority bits
+ IRQ_SetPriority(GTIM_IRQ_NUM, 0xFFU);
+
+ prio = IRQ_GetPriority(GTIM_IRQ_NUM);
+
+ // At least bits [7:4] must be implemented
+ if ((prio & 0xF0U) == 0U) {
+ return (-1);
+ }
+
+ for (bits = 0; bits < 4; bits++) {
+ if ((prio & 0x01) != 0) {
+ break;
+ }
+ prio >>= 1;
+ }
+
+ // Adjust configured priority to the number of implemented priority bits
+ prio = (GTIM_IRQ_PRIORITY << bits) & 0xFFUL;
+
+ // Set Private Timer interrupt priority
+ IRQ_SetPriority(GTIM_IRQ_NUM, prio-1U);
+
+ // Set edge-triggered IRQ
+ IRQ_SetMode(GTIM_IRQ_NUM, IRQ_MODE_TRIG_EDGE);
+
+ // Register tick interrupt handler function
+ IRQ_SetHandler(GTIM_IRQ_NUM, handler);
+
+ // Enable corresponding interrupt
+ IRQ_Enable(GTIM_IRQ_NUM);
+
+ // Enable system counter and timer control
+#ifdef SCTR_BASE
+ *(uint32_t*)SCTR_BASE |= 3U;
+#endif
+
+ // Enable timer control
+ PL1_SetControl(1U);
+
+ return (0);
+}
+
+/// Enable OS Tick.
+void OS_Tick_Enable (void) {
+ uint32_t ctrl;
+
+ // Set pending interrupt if flag set
+ if (GTIM_PendIRQ != 0U) {
+ GTIM_PendIRQ = 0U;
+ IRQ_SetPending (GTIM_IRQ_NUM);
+ }
+
+ // Start the Private Timer
+ ctrl = PL1_GetControl();
+ // Set bit: Timer enable
+ ctrl |= 1U;
+ PL1_SetControl(ctrl);
+}
+
+/// Disable OS Tick.
+void OS_Tick_Disable (void) {
+ uint32_t ctrl;
+
+ // Stop the Private Timer
+ ctrl = PL1_GetControl();
+ // Clear bit: Timer enable
+ ctrl &= ~1U;
+ PL1_SetControl(ctrl);
+
+ // Remember pending interrupt flag
+ if (IRQ_GetPending(GTIM_IRQ_NUM) != 0) {
+ IRQ_ClearPending(GTIM_IRQ_NUM);
+ GTIM_PendIRQ = 1U;
+ }
+}
+
+// Acknowledge OS Tick IRQ.
+void OS_Tick_AcknowledgeIRQ (void) {
+ IRQ_ClearPending (GTIM_IRQ_NUM);
+ PL1_SetLoadValue(GTIM_Load);
+}
+
+// Get OS Tick IRQ number.
+int32_t OS_Tick_GetIRQn (void) {
+ return (GTIM_IRQ_NUM);
+}
+
+// Get OS Tick clock.
+uint32_t OS_Tick_GetClock (void) {
+ return (GTIM_Clock);
+}
+
+// Get OS Tick interval.
+uint32_t OS_Tick_GetInterval (void) {
+ return (GTIM_Load + 1U);
+}
+
+// Get OS Tick count value.
+uint32_t OS_Tick_GetCount (void) {
+ return (GTIM_Load - PL1_GetCurrentValue());
+}
+
+// Get OS Tick overflow status.
+uint32_t OS_Tick_GetOverflow (void) {
+ CNTP_CTL_Type cntp_ctl;
+ cntp_ctl.w = PL1_GetControl();
+ return (cntp_ctl.b.ISTATUS);
+}
diff --git a/RTOS2/Source/os_tick_ptim.c b/RTOS2/Source/os_tick_ptim.c
new file mode 100644
index 0000000..e75ac3a
--- /dev/null
+++ b/RTOS2/Source/os_tick_ptim.c
@@ -0,0 +1,165 @@
+/**************************************************************************//**
+ * @file os_tick_ptim.c
+ * @brief CMSIS OS Tick implementation for Private Timer
+ * @version V1.0.2
+ * @date 02. March 2018
+ ******************************************************************************/
+/*
+ * Copyright (c) 2017-2018 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
+
+#if defined(PTIM)
+
+#include "os_tick.h"
+#include "irq_ctrl.h"
+
+#ifndef PTIM_IRQ_PRIORITY
+#define PTIM_IRQ_PRIORITY 0xFFU
+#endif
+
+static uint8_t PTIM_PendIRQ; // Timer interrupt pending flag
+
+// Setup OS Tick.
+int32_t OS_Tick_Setup (uint32_t freq, IRQHandler_t handler) {
+ uint32_t load;
+ uint32_t prio;
+ uint32_t bits;
+
+ if (freq == 0U) {
+ return (-1);
+ }
+
+ PTIM_PendIRQ = 0U;
+
+ // Private Timer runs with the system frequency
+ load = (SystemCoreClock / freq) - 1U;
+
+ // Disable Private Timer and set load value
+ PTIM_SetControl (0U);
+ PTIM_SetLoadValue (load);
+
+ // Disable corresponding IRQ
+ IRQ_Disable (PrivTimer_IRQn);
+ IRQ_ClearPending(PrivTimer_IRQn);
+
+ // Determine number of implemented priority bits
+ IRQ_SetPriority (PrivTimer_IRQn, 0xFFU);
+
+ prio = IRQ_GetPriority (PrivTimer_IRQn);
+
+ // At least bits [7:4] must be implemented
+ if ((prio & 0xF0U) == 0U) {
+ return (-1);
+ }
+
+ for (bits = 0; bits < 4; bits++) {
+ if ((prio & 0x01) != 0) {
+ break;
+ }
+ prio >>= 1;
+ }
+
+ // Adjust configured priority to the number of implemented priority bits
+ prio = (PTIM_IRQ_PRIORITY << bits) & 0xFFUL;
+
+ // Set Private Timer interrupt priority
+ IRQ_SetPriority(PrivTimer_IRQn, prio-1U);
+
+ // Set edge-triggered IRQ
+ IRQ_SetMode(PrivTimer_IRQn, IRQ_MODE_TRIG_EDGE);
+
+ // Register tick interrupt handler function
+ IRQ_SetHandler(PrivTimer_IRQn, handler);
+
+ // Enable corresponding interrupt
+ IRQ_Enable (PrivTimer_IRQn);
+
+ // Set bits: IRQ enable and Auto reload
+ PTIM_SetControl (0x06U);
+
+ return (0);
+}
+
+/// Enable OS Tick.
+void OS_Tick_Enable (void) {
+ uint32_t ctrl;
+
+ // Set pending interrupt if flag set
+ if (PTIM_PendIRQ != 0U) {
+ PTIM_PendIRQ = 0U;
+ IRQ_SetPending (PrivTimer_IRQn);
+ }
+
+ // Start the Private Timer
+ ctrl = PTIM_GetControl();
+ // Set bit: Timer enable
+ ctrl |= 1U;
+ PTIM_SetControl (ctrl);
+}
+
+/// Disable OS Tick.
+void OS_Tick_Disable (void) {
+ uint32_t ctrl;
+
+ // Stop the Private Timer
+ ctrl = PTIM_GetControl();
+ // Clear bit: Timer enable
+ ctrl &= ~1U;
+ PTIM_SetControl (ctrl);
+
+ // Remember pending interrupt flag
+ if (IRQ_GetPending(PrivTimer_IRQn) != 0) {
+ IRQ_ClearPending (PrivTimer_IRQn);
+ PTIM_PendIRQ = 1U;
+ }
+}
+
+// Acknowledge OS Tick IRQ.
+void OS_Tick_AcknowledgeIRQ (void) {
+ PTIM_ClearEventFlag();
+}
+
+// Get OS Tick IRQ number.
+int32_t OS_Tick_GetIRQn (void) {
+ return (PrivTimer_IRQn);
+}
+
+// Get OS Tick clock.
+uint32_t OS_Tick_GetClock (void) {
+ return (SystemCoreClock);
+}
+
+// Get OS Tick interval.
+uint32_t OS_Tick_GetInterval (void) {
+ return (PTIM_GetLoadValue() + 1U);
+}
+
+// Get OS Tick count value.
+uint32_t OS_Tick_GetCount (void) {
+ uint32_t load = PTIM_GetLoadValue();
+ return (load - PTIM_GetCurrentValue());
+}
+
+// Get OS Tick overflow status.
+uint32_t OS_Tick_GetOverflow (void) {
+ return (PTIM->ISR & 1);
+}
+
+#endif // PTIM
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