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GClarkson
2025-04-12 13:30:57 +01:00
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/***************************************************************************//**
* # License
*
* The licensor of this software is Silicon Laboratories Inc. Your use of this
* software is governed by the terms of Silicon Labs Master Software License
* Agreement (MSLA) available at
* www.silabs.com/about-us/legal/master-software-license-agreement. This
* software is Third Party Software licensed by Silicon Labs from a third party
* and is governed by the sections of the MSLA applicable to Third Party
* Software and the additional terms set forth below.
*
******************************************************************************/
/*
* FreeRTOS Kernel V10.4.3
* Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* https://www.FreeRTOS.org
* https://github.com/FreeRTOS
*
* 1 tab == 4 spaces!
*/
/* Standard includes. */
#include <stdint.h>
/* Defining MPU_WRAPPERS_INCLUDED_FROM_API_FILE ensures that PRIVILEGED_FUNCTION
* is defined correctly and privileged functions are placed in correct sections. */
#define MPU_WRAPPERS_INCLUDED_FROM_API_FILE
/* Portasm includes. */
#include "portasm.h"
/* MPU_WRAPPERS_INCLUDED_FROM_API_FILE is needed to be defined only for the
* header files. */
#undef MPU_WRAPPERS_INCLUDED_FROM_API_FILE
void vRestoreContextOfFirstTask( void ) /* __attribute__ (( naked )) PRIVILEGED_FUNCTION */
{
__asm volatile
(
" .syntax unified \n"
" \n"
" ldr r2, pxCurrentTCBConst2 \n"/* Read the location of pxCurrentTCB i.e. &( pxCurrentTCB ). */
" ldr r1, [r2] \n"/* Read pxCurrentTCB. */
" ldr r0, [r1] \n"/* Read top of stack from TCB - The first item in pxCurrentTCB is the task top of stack. */
" \n"
#if ( configENABLE_MPU == 1 )
" dmb \n"/* Complete outstanding transfers before disabling MPU. */
" ldr r2, xMPUCTRLConst2 \n"/* r2 = 0xe000ed94 [Location of MPU_CTRL]. */
" ldr r4, [r2] \n"/* Read the value of MPU_CTRL. */
" bic r4, #1 \n"/* r4 = r4 & ~1 i.e. Clear the bit 0 in r4. */
" str r4, [r2] \n"/* Disable MPU. */
" \n"
" adds r1, #4 \n"/* r1 = r1 + 4. r1 now points to MAIR0 in TCB. */
" ldr r3, [r1] \n"/* r3 = *r1 i.e. r3 = MAIR0. */
" ldr r2, xMAIR0Const2 \n"/* r2 = 0xe000edc0 [Location of MAIR0]. */
" str r3, [r2] \n"/* Program MAIR0. */
" ldr r2, xRNRConst2 \n"/* r2 = 0xe000ed98 [Location of RNR]. */
" movs r3, #4 \n"/* r3 = 4. */
" str r3, [r2] \n"/* Program RNR = 4. */
" adds r1, #4 \n"/* r1 = r1 + 4. r1 now points to first RBAR in TCB. */
" ldr r2, xRBARConst2 \n"/* r2 = 0xe000ed9c [Location of RBAR]. */
" ldmia r1!, {r4-r11} \n"/* Read 4 set of RBAR/RLAR registers from TCB. */
" stmia r2!, {r4-r11} \n"/* Write 4 set of RBAR/RLAR registers using alias registers. */
" \n"
" ldr r2, xMPUCTRLConst2 \n"/* r2 = 0xe000ed94 [Location of MPU_CTRL]. */
" ldr r4, [r2] \n"/* Read the value of MPU_CTRL. */
" orr r4, #1 \n"/* r4 = r4 | 1 i.e. Set the bit 0 in r4. */
" str r4, [r2] \n"/* Enable MPU. */
" dsb \n"/* Force memory writes before continuing. */
#endif /* configENABLE_MPU */
" \n"
#if ( configENABLE_MPU == 1 )
" ldm r0!, {r1-r3} \n"/* Read from stack - r1 = PSPLIM, r2 = CONTROL and r3 = EXC_RETURN. */
" msr psplim, r1 \n"/* Set this task's PSPLIM value. */
" msr control, r2 \n"/* Set this task's CONTROL value. */
" adds r0, #32 \n"/* Discard everything up to r0. */
" msr psp, r0 \n"/* This is now the new top of stack to use in the task. */
" isb \n"
" mov r0, #0 \n"
" msr basepri, r0 \n"/* Ensure that interrupts are enabled when the first task starts. */
" bx r3 \n"/* Finally, branch to EXC_RETURN. */
#else /* configENABLE_MPU */
" ldm r0!, {r1-r2} \n"/* Read from stack - r1 = PSPLIM and r2 = EXC_RETURN. */
" msr psplim, r1 \n"/* Set this task's PSPLIM value. */
" movs r1, #2 \n"/* r1 = 2. */
" msr CONTROL, r1 \n"/* Switch to use PSP in the thread mode. */
" adds r0, #32 \n"/* Discard everything up to r0. */
" msr psp, r0 \n"/* This is now the new top of stack to use in the task. */
" isb \n"
" mov r0, #0 \n"
" msr basepri, r0 \n"/* Ensure that interrupts are enabled when the first task starts. */
" bx r2 \n"/* Finally, branch to EXC_RETURN. */
#endif /* configENABLE_MPU */
" \n"
" .align 4 \n"
"pxCurrentTCBConst2: .word pxCurrentTCB \n"
#if ( configENABLE_MPU == 1 )
"xMPUCTRLConst2: .word 0xe000ed94 \n"
"xMAIR0Const2: .word 0xe000edc0 \n"
"xRNRConst2: .word 0xe000ed98 \n"
"xRBARConst2: .word 0xe000ed9c \n"
#endif /* configENABLE_MPU */
);
}
/*-----------------------------------------------------------*/
BaseType_t xIsPrivileged( void ) /* __attribute__ (( naked )) */
{
__asm volatile
(
" mrs r0, control \n"/* r0 = CONTROL. */
" tst r0, #1 \n"/* Perform r0 & 1 (bitwise AND) and update the conditions flag. */
" ite ne \n"
" movne r0, #0 \n"/* CONTROL[0]!=0. Return false to indicate that the processor is not privileged. */
" moveq r0, #1 \n"/* CONTROL[0]==0. Return true to indicate that the processor is privileged. */
" bx lr \n"/* Return. */
" \n"
" .align 4 \n"
::: "r0", "memory"
);
}
/*-----------------------------------------------------------*/
void vRaisePrivilege( void ) /* __attribute__ (( naked )) PRIVILEGED_FUNCTION */
{
__asm volatile
(
" mrs r0, control \n"/* Read the CONTROL register. */
" bic r0, #1 \n"/* Clear the bit 0. */
" msr control, r0 \n"/* Write back the new CONTROL value. */
" bx lr \n"/* Return to the caller. */
::: "r0", "memory"
);
}
/*-----------------------------------------------------------*/
void vResetPrivilege( void ) /* __attribute__ (( naked )) */
{
__asm volatile
(
" mrs r0, control \n"/* r0 = CONTROL. */
" orr r0, #1 \n"/* r0 = r0 | 1. */
" msr control, r0 \n"/* CONTROL = r0. */
" bx lr \n"/* Return to the caller. */
::: "r0", "memory"
);
}
/*-----------------------------------------------------------*/
void vStartFirstTask( void ) /* __attribute__ (( naked )) PRIVILEGED_FUNCTION */
{
__asm volatile
(
" ldr r0, xVTORConst \n"/* Use the NVIC offset register to locate the stack. */
" ldr r0, [r0] \n"/* Read the VTOR register which gives the address of vector table. */
" ldr r0, [r0] \n"/* The first entry in vector table is stack pointer. */
" msr msp, r0 \n"/* Set the MSP back to the start of the stack. */
" cpsie i \n"/* Globally enable interrupts. */
" cpsie f \n"
" dsb \n"
" isb \n"
" svc %0 \n"/* System call to start the first task. */
" nop \n"
" \n"
" .align 4 \n"
"xVTORConst: .word 0xe000ed08 \n"
::"i" ( portSVC_START_SCHEDULER ) : "memory"
);
}
/*-----------------------------------------------------------*/
uint32_t ulSetInterruptMask( void ) /* __attribute__(( naked )) PRIVILEGED_FUNCTION */
{
__asm volatile
(
" mrs r0, basepri \n"/* r0 = basepri. Return original basepri value. */
" mov r1, %0 \n"/* r1 = configMAX_SYSCALL_INTERRUPT_PRIORITY. */
" msr basepri, r1 \n"/* Disable interrupts upto configMAX_SYSCALL_INTERRUPT_PRIORITY. */
" dsb \n"
" isb \n"
" bx lr \n"/* Return. */
::"i" ( configMAX_SYSCALL_INTERRUPT_PRIORITY ) : "memory"
);
}
/*-----------------------------------------------------------*/
void vClearInterruptMask( __attribute__( ( unused ) ) uint32_t ulMask ) /* __attribute__(( naked )) PRIVILEGED_FUNCTION */
{
__asm volatile
(
" msr basepri, r0 \n"/* basepri = ulMask. */
" dsb \n"
" isb \n"
" bx lr \n"/* Return. */
::: "memory"
);
}
/*-----------------------------------------------------------*/
void PendSV_Handler( void ) /* __attribute__ (( naked )) PRIVILEGED_FUNCTION */
{
__asm volatile
(
" .syntax unified \n"
" \n"
" mrs r0, psp \n"/* Read PSP in r0. */
#if ( configENABLE_FPU == 1 )
" tst lr, #0x10 \n"/* Test Bit[4] in LR. Bit[4] of EXC_RETURN is 0 if the FPU is in use. */
" it eq \n"
" vstmdbeq r0!, {s16-s31} \n"/* Store the FPU registers which are not saved automatically. */
#endif /* configENABLE_FPU */
#if ( configENABLE_MPU == 1 )
" mrs r1, psplim \n"/* r1 = PSPLIM. */
" mrs r2, control \n"/* r2 = CONTROL. */
" mov r3, lr \n"/* r3 = LR/EXC_RETURN. */
" stmdb r0!, {r1-r11} \n"/* Store on the stack - PSPLIM, CONTROL, LR and registers that are not automatically saved. */
#else /* configENABLE_MPU */
" mrs r2, psplim \n"/* r2 = PSPLIM. */
" mov r3, lr \n"/* r3 = LR/EXC_RETURN. */
" stmdb r0!, {r2-r11} \n"/* Store on the stack - PSPLIM, LR and registers that are not automatically saved. */
#endif /* configENABLE_MPU */
" \n"
" ldr r2, pxCurrentTCBConst \n"/* Read the location of pxCurrentTCB i.e. &( pxCurrentTCB ). */
" ldr r1, [r2] \n"/* Read pxCurrentTCB. */
" str r0, [r1] \n"/* Save the new top of stack in TCB. */
" \n"
" mov r0, %0 \n"/* r0 = configMAX_SYSCALL_INTERRUPT_PRIORITY */
" msr basepri, r0 \n"/* Disable interrupts upto configMAX_SYSCALL_INTERRUPT_PRIORITY. */
" dsb \n"
" isb \n"
" bl vTaskSwitchContext \n"
" mov r0, #0 \n"/* r0 = 0. */
" msr basepri, r0 \n"/* Enable interrupts. */
" \n"
" ldr r2, pxCurrentTCBConst \n"/* Read the location of pxCurrentTCB i.e. &( pxCurrentTCB ). */
" ldr r1, [r2] \n"/* Read pxCurrentTCB. */
" ldr r0, [r1] \n"/* The first item in pxCurrentTCB is the task top of stack. r0 now points to the top of stack. */
" \n"
#if ( configENABLE_MPU == 1 )
" dmb \n"/* Complete outstanding transfers before disabling MPU. */
" ldr r2, xMPUCTRLConst \n"/* r2 = 0xe000ed94 [Location of MPU_CTRL]. */
" ldr r4, [r2] \n"/* Read the value of MPU_CTRL. */
" bic r4, #1 \n"/* r4 = r4 & ~1 i.e. Clear the bit 0 in r4. */
" str r4, [r2] \n"/* Disable MPU. */
" \n"
" adds r1, #4 \n"/* r1 = r1 + 4. r1 now points to MAIR0 in TCB. */
" ldr r3, [r1] \n"/* r3 = *r1 i.e. r3 = MAIR0. */
" ldr r2, xMAIR0Const \n"/* r2 = 0xe000edc0 [Location of MAIR0]. */
" str r3, [r2] \n"/* Program MAIR0. */
" ldr r2, xRNRConst \n"/* r2 = 0xe000ed98 [Location of RNR]. */
" movs r3, #4 \n"/* r3 = 4. */
" str r3, [r2] \n"/* Program RNR = 4. */
" adds r1, #4 \n"/* r1 = r1 + 4. r1 now points to first RBAR in TCB. */
" ldr r2, xRBARConst \n"/* r2 = 0xe000ed9c [Location of RBAR]. */
" ldmia r1!, {r4-r11} \n"/* Read 4 sets of RBAR/RLAR registers from TCB. */
" stmia r2!, {r4-r11} \n"/* Write 4 set of RBAR/RLAR registers using alias registers. */
" \n"
" ldr r2, xMPUCTRLConst \n"/* r2 = 0xe000ed94 [Location of MPU_CTRL]. */
" ldr r4, [r2] \n"/* Read the value of MPU_CTRL. */
" orr r4, #1 \n"/* r4 = r4 | 1 i.e. Set the bit 0 in r4. */
" str r4, [r2] \n"/* Enable MPU. */
" dsb \n"/* Force memory writes before continuing. */
#endif /* configENABLE_MPU */
" \n"
#if ( configENABLE_MPU == 1 )
" ldmia r0!, {r1-r11} \n"/* Read from stack - r1 = PSPLIM, r2 = CONTROL, r3 = LR and r4-r11 restored. */
#else /* configENABLE_MPU */
" ldmia r0!, {r2-r11} \n"/* Read from stack - r2 = PSPLIM, r3 = LR and r4-r11 restored. */
#endif /* configENABLE_MPU */
" \n"
#if ( configENABLE_FPU == 1 )
" tst r3, #0x10 \n"/* Test Bit[4] in LR. Bit[4] of EXC_RETURN is 0 if the FPU is in use. */
" it eq \n"
" vldmiaeq r0!, {s16-s31} \n"/* Restore the FPU registers which are not restored automatically. */
#endif /* configENABLE_FPU */
" \n"
#if ( configENABLE_MPU == 1 )
" msr psplim, r1 \n"/* Restore the PSPLIM register value for the task. */
" msr control, r2 \n"/* Restore the CONTROL register value for the task. */
#else /* configENABLE_MPU */
" msr psplim, r2 \n"/* Restore the PSPLIM register value for the task. */
#endif /* configENABLE_MPU */
" msr psp, r0 \n"/* Remember the new top of stack for the task. */
" bx r3 \n"
" \n"
" .align 4 \n"
"pxCurrentTCBConst: .word pxCurrentTCB \n"
#if ( configENABLE_MPU == 1 )
"xMPUCTRLConst: .word 0xe000ed94 \n"
"xMAIR0Const: .word 0xe000edc0 \n"
"xRNRConst: .word 0xe000ed98 \n"
"xRBARConst: .word 0xe000ed9c \n"
#endif /* configENABLE_MPU */
::"i" ( configMAX_SYSCALL_INTERRUPT_PRIORITY )
);
}
/*-----------------------------------------------------------*/
void SVC_Handler( void ) /* __attribute__ (( naked )) PRIVILEGED_FUNCTION */
{
__asm volatile
(
" tst lr, #4 \n"
" ite eq \n"
" mrseq r0, msp \n"
" mrsne r0, psp \n"
" ldr r1, svchandler_address_const \n"
" bx r1 \n"
" \n"
" .align 4 \n"
"svchandler_address_const: .word vPortSVCHandler_C \n"
);
}
/*-----------------------------------------------------------*/

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/***************************************************************************//**
* # License
*
* The licensor of this software is Silicon Laboratories Inc. Your use of this
* software is governed by the terms of Silicon Labs Master Software License
* Agreement (MSLA) available at
* www.silabs.com/about-us/legal/master-software-license-agreement. This
* software is Third Party Software licensed by Silicon Labs from a third party
* and is governed by the sections of the MSLA applicable to Third Party
* Software and the additional terms set forth below.
*
******************************************************************************/
/*
* FreeRTOS Kernel V10.4.3
* Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* https://www.FreeRTOS.org
* https://github.com/FreeRTOS
*
* 1 tab == 4 spaces!
*/
#ifndef __PORT_ASM_H__
#define __PORT_ASM_H__
/* Scheduler includes. */
#include "FreeRTOS.h"
/* MPU wrappers includes. */
#include "mpu_wrappers.h"
/**
* @brief Restore the context of the first task so that the first task starts
* executing.
*/
void vRestoreContextOfFirstTask( void ) __attribute__( ( naked ) ) PRIVILEGED_FUNCTION;
/**
* @brief Checks whether or not the processor is privileged.
*
* @return 1 if the processor is already privileged, 0 otherwise.
*/
BaseType_t xIsPrivileged( void ) __attribute__( ( naked ) );
/**
* @brief Raises the privilege level by clearing the bit 0 of the CONTROL
* register.
*
* @note This is a privileged function and should only be called from the kenrel
* code.
*
* Bit 0 of the CONTROL register defines the privilege level of Thread Mode.
* Bit[0] = 0 --> The processor is running privileged
* Bit[0] = 1 --> The processor is running unprivileged.
*/
void vRaisePrivilege( void ) __attribute__( ( naked ) ) PRIVILEGED_FUNCTION;
/**
* @brief Lowers the privilege level by setting the bit 0 of the CONTROL
* register.
*
* Bit 0 of the CONTROL register defines the privilege level of Thread Mode.
* Bit[0] = 0 --> The processor is running privileged
* Bit[0] = 1 --> The processor is running unprivileged.
*/
void vResetPrivilege( void ) __attribute__( ( naked ) );
/**
* @brief Starts the first task.
*/
void vStartFirstTask( void ) __attribute__( ( naked ) ) PRIVILEGED_FUNCTION;
/**
* @brief Disables interrupts.
*/
uint32_t ulSetInterruptMask( void ) __attribute__( ( naked ) ) PRIVILEGED_FUNCTION;
/**
* @brief Enables interrupts.
*/
void vClearInterruptMask( uint32_t ulMask ) __attribute__( ( naked ) ) PRIVILEGED_FUNCTION;
/**
* @brief PendSV Exception handler.
*/
void PendSV_Handler( void ) __attribute__( ( naked ) ) PRIVILEGED_FUNCTION;
/**
* @brief SVC Handler.
*/
void SVC_Handler( void ) __attribute__( ( naked ) ) PRIVILEGED_FUNCTION;
/**
* @brief Allocate a Secure context for the calling task.
*
* @param[in] ulSecureStackSize The size of the stack to be allocated on the
* secure side for the calling task.
*/
void vPortAllocateSecureContext( uint32_t ulSecureStackSize ) __attribute__( ( naked ) );
/**
* @brief Free the task's secure context.
*
* @param[in] pulTCB Pointer to the Task Control Block (TCB) of the task.
*/
void vPortFreeSecureContext( uint32_t * pulTCB ) __attribute__( ( naked ) ) PRIVILEGED_FUNCTION;
#endif /* __PORT_ASM_H__ */

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/***************************************************************************//**
* # License
*
* The licensor of this software is Silicon Laboratories Inc. Your use of this
* software is governed by the terms of Silicon Labs Master Software License
* Agreement (MSLA) available at
* www.silabs.com/about-us/legal/master-software-license-agreement. This
* software is Third Party Software licensed by Silicon Labs from a third party
* and is governed by the sections of the MSLA applicable to Third Party
* Software and the additional terms set forth below.
*
******************************************************************************/
/*
* FreeRTOS Kernel V10.4.3
* Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* https://www.FreeRTOS.org
* https://github.com/FreeRTOS
*
* 1 tab == 4 spaces!
*/
#ifndef PORTMACRO_H
#define PORTMACRO_H
#ifdef __cplusplus
extern "C" {
#endif
/*------------------------------------------------------------------------------
* Port specific definitions.
*
* The settings in this file configure FreeRTOS correctly for the given hardware
* and compiler.
*
* These settings should not be altered.
*------------------------------------------------------------------------------
*/
#ifndef configENABLE_FPU
#error configENABLE_FPU must be defined in FreeRTOSConfig.h. Set configENABLE_FPU to 1 to enable the FPU or 0 to disable the FPU.
#endif /* configENABLE_FPU */
#ifndef configENABLE_MPU
#error configENABLE_MPU must be defined in FreeRTOSConfig.h. Set configENABLE_MPU to 1 to enable the MPU or 0 to disable the MPU.
#endif /* configENABLE_MPU */
#ifndef configENABLE_TRUSTZONE
#error configENABLE_TRUSTZONE must be defined in FreeRTOSConfig.h. Set configENABLE_TRUSTZONE to 1 to enable TrustZone or 0 to disable TrustZone.
#endif /* configENABLE_TRUSTZONE */
/*-----------------------------------------------------------*/
/**
* @brief Type definitions.
*/
#define portCHAR char
#define portFLOAT float
#define portDOUBLE double
#define portLONG long
#define portSHORT short
#define portSTACK_TYPE uint32_t
#define portBASE_TYPE long
typedef portSTACK_TYPE StackType_t;
typedef long BaseType_t;
typedef unsigned long UBaseType_t;
#if ( configUSE_16_BIT_TICKS == 1 )
typedef uint16_t TickType_t;
#define portMAX_DELAY ( TickType_t ) 0xffff
#else
typedef uint32_t TickType_t;
#define portMAX_DELAY ( TickType_t ) 0xffffffffUL
/* 32-bit tick type on a 32-bit architecture, so reads of the tick count do
* not need to be guarded with a critical section. */
#define portTICK_TYPE_IS_ATOMIC 1
#endif
/*-----------------------------------------------------------*/
/**
* Architecture specifics.
*/
#define portARCH_NAME "Cortex-M33"
#define portSTACK_GROWTH ( -1 )
#define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
#define portBYTE_ALIGNMENT 8
#define portNOP()
#define portINLINE __inline
#ifndef portFORCE_INLINE
#define portFORCE_INLINE inline __attribute__( ( always_inline ) )
#endif
#define portHAS_STACK_OVERFLOW_CHECKING 1
#define portDONT_DISCARD __attribute__( ( used ) )
/*-----------------------------------------------------------*/
/**
* @brief Extern declarations.
*/
extern BaseType_t xPortIsInsideInterrupt( void );
extern void vPortYield( void ) /* PRIVILEGED_FUNCTION */;
extern void vPortEnterCritical( void ) /* PRIVILEGED_FUNCTION */;
extern void vPortExitCritical( void ) /* PRIVILEGED_FUNCTION */;
extern uint32_t ulSetInterruptMask( void ) /* __attribute__(( naked )) PRIVILEGED_FUNCTION */;
extern void vClearInterruptMask( uint32_t ulMask ) /* __attribute__(( naked )) PRIVILEGED_FUNCTION */;
#if ( configENABLE_TRUSTZONE == 1 )
extern void vPortAllocateSecureContext( uint32_t ulSecureStackSize ); /* __attribute__ (( naked )) */
extern void vPortFreeSecureContext( uint32_t * pulTCB ) /* __attribute__ (( naked )) PRIVILEGED_FUNCTION */;
#endif /* configENABLE_TRUSTZONE */
#if ( configENABLE_MPU == 1 )
extern BaseType_t xIsPrivileged( void ) /* __attribute__ (( naked )) */;
extern void vResetPrivilege( void ) /* __attribute__ (( naked )) */;
#endif /* configENABLE_MPU */
/*-----------------------------------------------------------*/
/**
* @brief MPU specific constants.
*/
#if ( configENABLE_MPU == 1 )
#define portUSING_MPU_WRAPPERS 1
#define portPRIVILEGE_BIT ( 0x80000000UL )
#else
#define portPRIVILEGE_BIT ( 0x0UL )
#endif /* configENABLE_MPU */
/* MPU regions. */
#define portPRIVILEGED_FLASH_REGION ( 0UL )
#define portUNPRIVILEGED_FLASH_REGION ( 1UL )
#define portUNPRIVILEGED_SYSCALLS_REGION ( 2UL )
#define portPRIVILEGED_RAM_REGION ( 3UL )
#define portSTACK_REGION ( 4UL )
#define portFIRST_CONFIGURABLE_REGION ( 5UL )
#define portLAST_CONFIGURABLE_REGION ( 7UL )
#define portNUM_CONFIGURABLE_REGIONS ( ( portLAST_CONFIGURABLE_REGION - portFIRST_CONFIGURABLE_REGION ) + 1 )
#define portTOTAL_NUM_REGIONS ( portNUM_CONFIGURABLE_REGIONS + 1 ) /* Plus one to make space for the stack region. */
/* Device memory attributes used in MPU_MAIR registers.
*
* 8-bit values encoded as follows:
* Bit[7:4] - 0000 - Device Memory
* Bit[3:2] - 00 --> Device-nGnRnE
* 01 --> Device-nGnRE
* 10 --> Device-nGRE
* 11 --> Device-GRE
* Bit[1:0] - 00, Reserved.
*/
#define portMPU_DEVICE_MEMORY_nGnRnE ( 0x00 ) /* 0000 0000 */
#define portMPU_DEVICE_MEMORY_nGnRE ( 0x04 ) /* 0000 0100 */
#define portMPU_DEVICE_MEMORY_nGRE ( 0x08 ) /* 0000 1000 */
#define portMPU_DEVICE_MEMORY_GRE ( 0x0C ) /* 0000 1100 */
/* Normal memory attributes used in MPU_MAIR registers. */
#define portMPU_NORMAL_MEMORY_NON_CACHEABLE ( 0x44 ) /* Non-cacheable. */
#define portMPU_NORMAL_MEMORY_BUFFERABLE_CACHEABLE ( 0xFF ) /* Non-Transient, Write-back, Read-Allocate and Write-Allocate. */
/* Attributes used in MPU_RBAR registers. */
#define portMPU_REGION_NON_SHAREABLE ( 0UL << 3UL )
#define portMPU_REGION_INNER_SHAREABLE ( 1UL << 3UL )
#define portMPU_REGION_OUTER_SHAREABLE ( 2UL << 3UL )
#define portMPU_REGION_PRIVILEGED_READ_WRITE ( 0UL << 1UL )
#define portMPU_REGION_READ_WRITE ( 1UL << 1UL )
#define portMPU_REGION_PRIVILEGED_READ_ONLY ( 2UL << 1UL )
#define portMPU_REGION_READ_ONLY ( 3UL << 1UL )
#define portMPU_REGION_EXECUTE_NEVER ( 1UL )
/*-----------------------------------------------------------*/
/**
* @brief Settings to define an MPU region.
*/
typedef struct MPURegionSettings
{
uint32_t ulRBAR; /**< RBAR for the region. */
uint32_t ulRLAR; /**< RLAR for the region. */
} MPURegionSettings_t;
/**
* @brief MPU settings as stored in the TCB.
*/
typedef struct MPU_SETTINGS
{
uint32_t ulMAIR0; /**< MAIR0 for the task containing attributes for all the 4 per task regions. */
MPURegionSettings_t xRegionsSettings[ portTOTAL_NUM_REGIONS ]; /**< Settings for 4 per task regions. */
} xMPU_SETTINGS;
/*-----------------------------------------------------------*/
/**
* @brief SVC numbers.
*/
#define portSVC_ALLOCATE_SECURE_CONTEXT 0
#define portSVC_FREE_SECURE_CONTEXT 1
#define portSVC_START_SCHEDULER 2
#define portSVC_RAISE_PRIVILEGE 3
/*-----------------------------------------------------------*/
/**
* @brief Scheduler utilities.
*/
#define portYIELD() vPortYield()
#define portNVIC_INT_CTRL_REG ( *( ( volatile uint32_t * ) 0xe000ed04 ) )
#define portNVIC_PENDSVSET_BIT ( 1UL << 28UL )
#define portEND_SWITCHING_ISR( xSwitchRequired ) if( xSwitchRequired ) portNVIC_INT_CTRL_REG = portNVIC_PENDSVSET_BIT
#define portYIELD_FROM_ISR( x ) portEND_SWITCHING_ISR( x )
/*-----------------------------------------------------------*/
/**
* @brief Critical section management.
*/
#define portSET_INTERRUPT_MASK_FROM_ISR() ulSetInterruptMask()
#define portCLEAR_INTERRUPT_MASK_FROM_ISR( x ) vClearInterruptMask( x )
#define portDISABLE_INTERRUPTS() ulSetInterruptMask()
#define portENABLE_INTERRUPTS() vClearInterruptMask( 0 )
#define portENTER_CRITICAL() vPortEnterCritical()
#define portEXIT_CRITICAL() vPortExitCritical()
/*-----------------------------------------------------------*/
/**
* @brief Tickless idle/low power functionality.
*/
#ifndef portSUPPRESS_TICKS_AND_SLEEP
extern void vPortSuppressTicksAndSleep( TickType_t xExpectedIdleTime );
#define portSUPPRESS_TICKS_AND_SLEEP( xExpectedIdleTime ) vPortSuppressTicksAndSleep( xExpectedIdleTime )
#endif
/*-----------------------------------------------------------*/
/**
* @brief Task function macros as described on the FreeRTOS.org WEB site.
*/
#define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void * pvParameters )
#define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void * pvParameters )
/*-----------------------------------------------------------*/
#if ( configENABLE_TRUSTZONE == 1 )
/**
* @brief Allocate a secure context for the task.
*
* Tasks are not created with a secure context. Any task that is going to call
* secure functions must call portALLOCATE_SECURE_CONTEXT() to allocate itself a
* secure context before it calls any secure function.
*
* @param[in] ulSecureStackSize The size of the secure stack to be allocated.
*/
#define portALLOCATE_SECURE_CONTEXT( ulSecureStackSize ) vPortAllocateSecureContext( ulSecureStackSize )
/**
* @brief Called when a task is deleted to delete the task's secure context,
* if it has one.
*
* @param[in] pxTCB The TCB of the task being deleted.
*/
#define portCLEAN_UP_TCB( pxTCB ) vPortFreeSecureContext( ( uint32_t * ) pxTCB )
#else
#define portALLOCATE_SECURE_CONTEXT( ulSecureStackSize )
#define portCLEAN_UP_TCB( pxTCB )
#endif /* configENABLE_TRUSTZONE */
/*-----------------------------------------------------------*/
#if ( configENABLE_MPU == 1 )
/**
* @brief Checks whether or not the processor is privileged.
*
* @return 1 if the processor is already privileged, 0 otherwise.
*/
#define portIS_PRIVILEGED() xIsPrivileged()
/**
* @brief Raise an SVC request to raise privilege.
*
* The SVC handler checks that the SVC was raised from a system call and only
* then it raises the privilege. If this is called from any other place,
* the privilege is not raised.
*/
#define portRAISE_PRIVILEGE() __asm volatile ( "svc %0 \n" ::"i" ( portSVC_RAISE_PRIVILEGE ) : "memory" );
/**
* @brief Lowers the privilege level by setting the bit 0 of the CONTROL
* register.
*/
#define portRESET_PRIVILEGE() vResetPrivilege()
#else
#define portIS_PRIVILEGED()
#define portRAISE_PRIVILEGE()
#define portRESET_PRIVILEGE()
#endif /* configENABLE_MPU */
/*-----------------------------------------------------------*/
/**
* @brief Barriers.
*/
#define portMEMORY_BARRIER() __asm volatile ( "" ::: "memory" )
/*-----------------------------------------------------------*/
#ifdef __cplusplus
}
#endif
#endif /* PORTMACRO_H */

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/***************************************************************************//**
* # License
*
* The licensor of this software is Silicon Laboratories Inc. Your use of this
* software is governed by the terms of Silicon Labs Master Software License
* Agreement (MSLA) available at
* www.silabs.com/about-us/legal/master-software-license-agreement. This
* software is Third Party Software licensed by Silicon Labs from a third party
* and is governed by the sections of the MSLA applicable to Third Party
* Software and the additional terms set forth below.
*
******************************************************************************/
/*
* FreeRTOS Kernel V10.4.3
* Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* https://www.FreeRTOS.org
* https://github.com/FreeRTOS
*
* 1 tab == 4 spaces!
*/
/*
* Implementation of pvPortMalloc() and vPortFree() that relies on the
* compilers own malloc() and free() implementations.
*
* This file can only be used if the linker is configured to to generate
* a heap memory area.
*
* See heap_1.c, heap_2.c and heap_4.c for alternative implementations, and the
* memory management pages of https://www.FreeRTOS.org for more information.
*/
#include <stdlib.h>
/* Defining MPU_WRAPPERS_INCLUDED_FROM_API_FILE prevents task.h from redefining
* all the API functions to use the MPU wrappers. That should only be done when
* task.h is included from an application file. */
#define MPU_WRAPPERS_INCLUDED_FROM_API_FILE
#include "FreeRTOS.h"
#include "task.h"
#undef MPU_WRAPPERS_INCLUDED_FROM_API_FILE
#if ( configSUPPORT_DYNAMIC_ALLOCATION == 0 )
#error This file must not be used if configSUPPORT_DYNAMIC_ALLOCATION is 0
#endif
/*-----------------------------------------------------------*/
void * pvPortMalloc( size_t xWantedSize )
{
void * pvReturn;
vTaskSuspendAll();
{
pvReturn = malloc( xWantedSize );
traceMALLOC( pvReturn, xWantedSize );
}
( void ) xTaskResumeAll();
#if ( configUSE_MALLOC_FAILED_HOOK == 1 )
{
if( pvReturn == NULL )
{
extern void vApplicationMallocFailedHook( void );
vApplicationMallocFailedHook();
}
}
#endif
return pvReturn;
}
/*-----------------------------------------------------------*/
void vPortFree( void * pv )
{
if( pv )
{
vTaskSuspendAll();
{
free( pv );
traceFREE( pv, 0 );
}
( void ) xTaskResumeAll();
}
}

232
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/***************************************************************************//**
* @file
* @brief FreeRTOS Tick and Sleep port.
*******************************************************************************
* # License
* <b>Copyright 2018 Silicon Laboratories Inc. www.silabs.com</b>
*******************************************************************************
*
* The licensor of this software is Silicon Laboratories Inc. Your use of this
* software is governed by the terms of Silicon Labs Master Software License
* Agreement (MSLA) available at
* www.silabs.com/about-us/legal/master-software-license-agreement. This
* software is distributed to you in Source Code format and is governed by the
* sections of the MSLA applicable to Source Code.
*
******************************************************************************/
/* Compiler includes. */
#include "FreeRTOS.h"
#include "task.h"
#include "portmacro.h"
#include "sl_sleeptimer.h"
#include "sl_atomic.h"
#include "sl_power_manager.h"
#if configUSE_TICKLESS_IDLE == 0
#error "This port requires configUSE_TICKLESS_IDLE to be enabled."
#endif
/* Local variables */
/* Number of lf ticks per OS ticks. */
static uint32_t lfticks_per_os_ticks = 0;
/* Tick count (in lf ticks) last time the tick count was updated in FreeRTOS. */
static uint32_t last_update_lftick = 0;
/* Indicates if system is sleeping. */
static bool is_sleeping = false;
/* Maximum number of os ticks the system can sleep per call. */
static TickType_t max_sleep_os_ticks = 0;
/* Expected sleep ticks */
static TickType_t expected_sleep_ticks = 0;
/* Total ticks slept */
static TickType_t total_slept_os_ticks = 0;
/* Handle to schedule wakeup timer. */
static sl_sleeptimer_timer_handle_t schedule_wakeup_timer_handle;
/* Local functions */
static void sli_schedule_wakeup_timer_expire_handler(sl_sleeptimer_timer_handle_t *handle,
void *data);
static void sli_os_schedule_wakeup(TickType_t os_ticks);
/***************************************************************************//**
* Sets up sleeptimer timer for constant ticking.
******************************************************************************/
void vPortSetupTimerInterrupt( void )
{
uint32_t sleeptimer_freq;
/* FreeRTOS requires a high SVC priority when starting the scheduler */
NVIC_SetPriority(SVCall_IRQn, 0);
sleeptimer_freq = sl_sleeptimer_get_timer_frequency();
configASSERT( configTICK_RATE_HZ <= sleeptimer_freq );
lfticks_per_os_ticks = (sleeptimer_freq + (configTICK_RATE_HZ - 1)) / configTICK_RATE_HZ;
max_sleep_os_ticks = (0xFFFFFFFF / lfticks_per_os_ticks) - 10;
last_update_lftick = sl_sleeptimer_get_tick_count();
/* Schedule a wakeup in one tick. */
sli_os_schedule_wakeup(1);
}
/***************************************************************************//**
* Stop constant ticking and wake the system up after specified idle time.
*
* @param xExpectedIdleTime Time in os ticks that the system is expected to
* sleep.
******************************************************************************/
SL_WEAK void sli_iot_power_set_expected_idle(TickType_t expected_idle)
{
(void)expected_idle;
return;
}
void vPortSuppressTicksAndSleep( TickType_t xExpectedIdleTime )
{
sl_atomic_store(is_sleeping, true);
/* Schedule a wakeup for expected idle end time. */
sl_sleeptimer_stop_timer(&schedule_wakeup_timer_handle);
sli_os_schedule_wakeup(xExpectedIdleTime);
configPRE_SLEEP_PROCESSING( xExpectedIdleTime );
sli_iot_power_set_expected_idle(xExpectedIdleTime);
expected_sleep_ticks = xExpectedIdleTime;
total_slept_os_ticks = 0;
sl_power_manager_sleep();
configPOST_SLEEP_PROCESSING( total_slept_os_ticks );
sl_atomic_store(is_sleeping, false);
/* Schedule a wakeup in one tick. */
sl_sleeptimer_stop_timer(&schedule_wakeup_timer_handle);
sli_os_schedule_wakeup(1);
}
/***************************************************************************//**
* Function called when schedule wakeup timer expires.
******************************************************************************/
static void sli_schedule_wakeup_timer_expire_handler(sl_sleeptimer_timer_handle_t *handle, void *data)
{
uint32_t current_tick_count = sl_sleeptimer_get_tick_count();
(void)handle;
(void)data;
uint32_t originalMask = portSET_INTERRUPT_MASK_FROM_ISR();
/* If system was not sleeping, update lfticks counter. */
if (!is_sleeping) {
bool sched = false;
/* Increment the RTOS tick. */
while ((current_tick_count - last_update_lftick) >= lfticks_per_os_ticks) {
sched |= xTaskIncrementTick();
last_update_lftick += lfticks_per_os_ticks;
}
if ( sched != pdFALSE ) {
/* A context switch is required. Context switching is performed in
the PendSV interrupt. Pend the PendSV interrupt. */
portYIELD();
}
sli_os_schedule_wakeup(1);
}
portCLEAR_INTERRUPT_MASK_FROM_ISR(originalMask);
}
/***************************************************************************//**
* (Re)-start schedule wakeup timer with delay specified.
*
* @param os_ticks Delay, in os ticks, before next wakeup/tick.
******************************************************************************/
static void sli_os_schedule_wakeup(TickType_t os_ticks)
{
sl_status_t status;
uint32_t lf_ticks_to_sleep;
TickType_t os_ticks_to_sleep;
uint32_t current_tick_count = sl_sleeptimer_get_tick_count();
/* Compute number of lfticks to sleep. */
os_ticks_to_sleep = (os_ticks <= max_sleep_os_ticks) ? os_ticks : max_sleep_os_ticks;
/* This function implements a correction mechanism that corrects any drift that can */
/* occur between the sleep timer time and the tick count in FreeRTOS. */
lf_ticks_to_sleep = os_ticks_to_sleep * lfticks_per_os_ticks;
if (lf_ticks_to_sleep <= (current_tick_count - last_update_lftick)) {
lf_ticks_to_sleep = 1;
} else {
lf_ticks_to_sleep -= (current_tick_count - last_update_lftick);
}
status = sl_sleeptimer_start_timer(&schedule_wakeup_timer_handle,
lf_ticks_to_sleep,
sli_schedule_wakeup_timer_expire_handler,
0,
0,
0);
configASSERT( status == SL_STATUS_OK );
#if (configASSERT_DEFINED == 0)
(void)status;
#endif
}
/***************************************************************************//**
* Function called by power manager to ensure that system is ok to sleep.
******************************************************************************/
SL_WEAK bool sli_iot_power_ok_to_sleep(void)
{
return true;
}
bool sl_power_manager_is_ok_to_sleep(void)
{
return sli_iot_power_ok_to_sleep() && (eTaskConfirmSleepModeStatus() != eAbortSleep);
}
/***************************************************************************//**
* Function called by power manager to determine if system can go back to sleep
* after a wakeup.
*
* @note Function is called in critical section
******************************************************************************/
bool sl_power_manager_sleep_on_isr_exit(void)
{
uint32_t slept_lf_ticks;
uint32_t slept_os_ticks;
/* Determine how long we slept. */
slept_lf_ticks = sl_sleeptimer_get_tick_count() - last_update_lftick;
slept_os_ticks = slept_lf_ticks / lfticks_per_os_ticks;
last_update_lftick += slept_os_ticks * lfticks_per_os_ticks;
/* Notify FreeRTOS of how long we slept. */
if ((total_slept_os_ticks + slept_os_ticks) < expected_sleep_ticks) {
vTaskStepTick(slept_os_ticks);
total_slept_os_ticks += slept_os_ticks;
} else {
vTaskStepTick(expected_sleep_ticks - total_slept_os_ticks);
total_slept_os_ticks = expected_sleep_ticks;
}
/* Have we slept enough ? */
if (total_slept_os_ticks >= expected_sleep_ticks) {
return false;
}
/* Check if we can sleep again */
return (eTaskConfirmSleepModeStatus() != eAbortSleep);
}