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Detect more startup config errors on Cortex M (#832)

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Verify that the application has correctly installed PendSV
and SVCall handlers. The application can choose to
disable these checks by setting configCHECK_HANDLER_INSTALLATION
to 0 in their FreeRTOSConfig.h.
pull/867/head^2
Jeff Tenney 1 year ago committed by GitHub
parent 553caa18ce
commit 30e6b8a5ea
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
35 changed files with 1765 additions and 350 deletions
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11
include/FreeRTOS.h
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@ -365,6 +365,17 @@
#define configPRECONDITION_DEFINED 1
#endif
#ifndef configCHECK_HANDLER_INSTALLATION
#define configCHECK_HANDLER_INSTALLATION 1
#else
/* The application has explicitly defined configCHECK_HANDLER_INSTALLATION
* to 1. The checks requires configASSERT() to be defined. */
#if ( ( configCHECK_HANDLER_INSTALLATION == 1 ) && ( configASSERT_DEFINED == 0 ) )
#error You must define configASSERT() when configCHECK_HANDLER_INSTALLATION is 1.
#endif
#endif
#ifndef portMEMORY_BARRIER
#define portMEMORY_BARRIER()
#endif

67
portable/ARMv8M/non_secure/port.c
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@ -80,6 +80,12 @@
#endif
/*-----------------------------------------------------------*/
/**
* @brief Prototype of all Interrupt Service Routines (ISRs).
*/
typedef void ( * portISR_t )( void );
/*-----------------------------------------------------------*/
/**
* @brief Constants required to manipulate the NVIC.
*/
@ -101,10 +107,18 @@
/**
* @brief Constants required to manipulate the SCB.
*/
#define portSCB_SYS_HANDLER_CTRL_STATE_REG ( *( volatile uint32_t * ) 0xe000ed24 )
#define portSCB_VTOR_REG ( *( ( portISR_t ** ) 0xe000ed08 ) )
#define portSCB_SYS_HANDLER_CTRL_STATE_REG ( *( ( volatile uint32_t * ) 0xe000ed24 ) )
#define portSCB_MEM_FAULT_ENABLE_BIT ( 1UL << 16UL )
/*-----------------------------------------------------------*/
/**
* @brief Constants used to check the installation of the FreeRTOS interrupt handlers.
*/
#define portVECTOR_INDEX_SVC ( 11 )
#define portVECTOR_INDEX_PENDSV ( 14 )
/*-----------------------------------------------------------*/
/**
* @brief Constants required to check the validity of an interrupt priority.
*/
@ -1598,9 +1612,42 @@ void vPortSVCHandler_C( uint32_t * pulCallerStackAddress ) /* PRIVILEGED_FUNCTIO
BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
{
/* An application can install FreeRTOS interrupt handlers in one of the
* folllowing ways:
* 1. Direct Routing - Install the functions SVC_Handler and PendSV_Handler
* for SVCall and PendSV interrupts respectively.
* 2. Indirect Routing - Install separate handlers for SVCall and PendSV
* interrupts and route program control from those handlers to
* SVC_Handler and PendSV_Handler functions.
*
* Applications that use Indirect Routing must set
* configCHECK_HANDLER_INSTALLATION to 0 in their FreeRTOSConfig.h. Direct
* routing, which is validated here when configCHECK_HANDLER_INSTALLATION
* is 1, should be preferred when possible. */
#if ( configCHECK_HANDLER_INSTALLATION == 1 )
{
const portISR_t * const pxVectorTable = portSCB_VTOR_REG;
/* Validate that the application has correctly installed the FreeRTOS
* handlers for SVCall and PendSV interrupts. We do not check the
* installation of the SysTick handler because the application may
* choose to drive the RTOS tick using a timer other than the SysTick
* timer by overriding the weak function vPortSetupTimerInterrupt().
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
* VTOR is not set correctly to point to the application's vector table. */
configASSERT( pxVectorTable[ portVECTOR_INDEX_SVC ] == SVC_Handler );
configASSERT( pxVectorTable[ portVECTOR_INDEX_PENDSV ] == PendSV_Handler );
}
#endif /* configCHECK_HANDLER_INSTALLATION */
#if ( ( configASSERT_DEFINED == 1 ) && ( portHAS_ARMV8M_MAIN_EXTENSION == 1 ) )
{
volatile uint32_t ulOriginalPriority;
volatile uint32_t ulImplementedPrioBits = 0;
volatile uint8_t ucMaxPriorityValue;
@ -1609,11 +1656,8 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
* "FromISR". FreeRTOS maintains separate thread and ISR API functions to
* ensure interrupt entry is as fast and simple as possible.
*
* Save the interrupt priority value that is about to be clobbered. */
ulOriginalPriority = portNVIC_SHPR2_REG;
/* Determine the number of priority bits available. First write to all
* possible bits. */
* First, determine the number of priority bits available. Write to all
* possible bits in the priority setting for SVCall. */
portNVIC_SHPR2_REG = 0xFF000000;
/* Read the value back to see how many bits stuck. */
@ -1636,7 +1680,6 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
/* Calculate the maximum acceptable priority group value for the number
* of bits read back. */
while( ( ucMaxPriorityValue & portTOP_BIT_OF_BYTE ) == portTOP_BIT_OF_BYTE )
{
ulImplementedPrioBits++;
@ -1674,16 +1717,14 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
* register. */
ulMaxPRIGROUPValue <<= portPRIGROUP_SHIFT;
ulMaxPRIGROUPValue &= portPRIORITY_GROUP_MASK;
/* Restore the clobbered interrupt priority register to its original
* value. */
portNVIC_SHPR2_REG = ulOriginalPriority;
}
#endif /* #if ( ( configASSERT_DEFINED == 1 ) && ( portHAS_ARMV8M_MAIN_EXTENSION == 1 ) ) */
/* Make PendSV, CallSV and SysTick the same priority as the kernel. */
/* Make PendSV and SysTick the lowest priority interrupts, and make SVCall
* the highest priority. */
portNVIC_SHPR3_REG |= portNVIC_PENDSV_PRI;
portNVIC_SHPR3_REG |= portNVIC_SYSTICK_PRI;
portNVIC_SHPR2_REG = 0;
#if ( configENABLE_MPU == 1 )
{

50
portable/GCC/ARM_CM0/port.c
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@ -34,6 +34,9 @@
#include "FreeRTOS.h"
#include "task.h"
/* Prototype of all Interrupt Service Routines (ISRs). */
typedef void ( * portISR_t )( void );
/* Constants required to manipulate the NVIC. */
#define portNVIC_SYSTICK_CTRL_REG ( *( ( volatile uint32_t * ) 0xe000e010 ) )
#define portNVIC_SYSTICK_LOAD_REG ( *( ( volatile uint32_t * ) 0xe000e014 ) )
@ -51,6 +54,10 @@
#define portNVIC_PENDSV_PRI ( portMIN_INTERRUPT_PRIORITY << 16UL )
#define portNVIC_SYSTICK_PRI ( portMIN_INTERRUPT_PRIORITY << 24UL )
/* Constants used to check the installation of the FreeRTOS interrupt handlers. */
#define portSCB_VTOR_REG ( *( ( portISR_t ** ) 0xe000ed08 ) )
#define portVECTOR_INDEX_PENDSV ( 14 )
/* Constants required to set up the initial stack. */
#define portINITIAL_XPSR ( 0x01000000 )
@ -200,9 +207,9 @@ void vPortSVCHandler( void )
void vPortStartFirstTask( void )
{
/* The MSP stack is not reset as, unlike on M3/4 parts, there is no vector
* table offset register that can be used to locate the initial stack value.
* Not all M0 parts have the application vector table at address 0. */
/* Don't reset the MSP stack as is done on CM3/4 devices. The vector table
* in some CM0 devices cannot be modified and thus may not hold the
* application's initial MSP value. */
__asm volatile (
" .syntax unified \n"
" ldr r2, pxCurrentTCBConst2 \n" /* Obtain location of pxCurrentTCB. */
@ -231,7 +238,42 @@ void vPortStartFirstTask( void )
*/
BaseType_t xPortStartScheduler( void )
{
/* Make PendSV, CallSV and SysTick the same priority as the kernel. */
/* An application can install FreeRTOS interrupt handlers in one of the
* folllowing ways:
* 1. Direct Routing - Install the function xPortPendSVHandler for PendSV
* interrupt.
* 2. Indirect Routing - Install separate handler for PendSV interrupt and
* route program control from that handler to xPortPendSVHandler function.
*
* Applications that use Indirect Routing must set
* configCHECK_HANDLER_INSTALLATION to 0 in their FreeRTOSConfig.h. Direct
* routing, which is validated here when configCHECK_HANDLER_INSTALLATION
* is 1, should be preferred when possible. */
#if ( configCHECK_HANDLER_INSTALLATION == 1 )
{
/* Point pxVectorTable to the interrupt vector table. Systems without
* a VTOR register provide the value zero in the VTOR register and
* the vector table itself is located at the address 0x00000000. */
const portISR_t * const pxVectorTable = portSCB_VTOR_REG;
/* Validate that the application has correctly installed the FreeRTOS
* handler for PendSV interrupt. We do not check the installation of the
* SysTick handler because the application may choose to drive the RTOS
* tick using a timer other than the SysTick timer by overriding the
* weak function vPortSetupTimerInterrupt().
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handler. For help installing the FreeRTOS handler, see
* https://www.FreeRTOS.org/FAQHelp.html.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
* VTOR is not set correctly to point to the application's vector table. */
configASSERT( pxVectorTable[ portVECTOR_INDEX_PENDSV ] == xPortPendSVHandler );
}
#endif /* configCHECK_HANDLER_INSTALLATION */
/* Make PendSV and SysTick the lowest priority interrupts. */
portNVIC_SHPR3_REG |= portNVIC_PENDSV_PRI;
portNVIC_SHPR3_REG |= portNVIC_SYSTICK_PRI;

67
portable/GCC/ARM_CM23/non_secure/port.c
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@ -80,6 +80,12 @@
#endif
/*-----------------------------------------------------------*/
/**
* @brief Prototype of all Interrupt Service Routines (ISRs).
*/
typedef void ( * portISR_t )( void );
/*-----------------------------------------------------------*/
/**
* @brief Constants required to manipulate the NVIC.
*/
@ -101,10 +107,18 @@
/**
* @brief Constants required to manipulate the SCB.
*/
#define portSCB_SYS_HANDLER_CTRL_STATE_REG ( *( volatile uint32_t * ) 0xe000ed24 )
#define portSCB_VTOR_REG ( *( ( portISR_t ** ) 0xe000ed08 ) )
#define portSCB_SYS_HANDLER_CTRL_STATE_REG ( *( ( volatile uint32_t * ) 0xe000ed24 ) )
#define portSCB_MEM_FAULT_ENABLE_BIT ( 1UL << 16UL )
/*-----------------------------------------------------------*/
/**
* @brief Constants used to check the installation of the FreeRTOS interrupt handlers.
*/
#define portVECTOR_INDEX_SVC ( 11 )
#define portVECTOR_INDEX_PENDSV ( 14 )
/*-----------------------------------------------------------*/
/**
* @brief Constants required to check the validity of an interrupt priority.
*/
@ -1598,9 +1612,42 @@ void vPortSVCHandler_C( uint32_t * pulCallerStackAddress ) /* PRIVILEGED_FUNCTIO
BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
{
/* An application can install FreeRTOS interrupt handlers in one of the
* folllowing ways:
* 1. Direct Routing - Install the functions SVC_Handler and PendSV_Handler
* for SVCall and PendSV interrupts respectively.
* 2. Indirect Routing - Install separate handlers for SVCall and PendSV
* interrupts and route program control from those handlers to
* SVC_Handler and PendSV_Handler functions.
*
* Applications that use Indirect Routing must set
* configCHECK_HANDLER_INSTALLATION to 0 in their FreeRTOSConfig.h. Direct
* routing, which is validated here when configCHECK_HANDLER_INSTALLATION
* is 1, should be preferred when possible. */
#if ( configCHECK_HANDLER_INSTALLATION == 1 )
{
const portISR_t * const pxVectorTable = portSCB_VTOR_REG;
/* Validate that the application has correctly installed the FreeRTOS
* handlers for SVCall and PendSV interrupts. We do not check the
* installation of the SysTick handler because the application may
* choose to drive the RTOS tick using a timer other than the SysTick
* timer by overriding the weak function vPortSetupTimerInterrupt().
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
* VTOR is not set correctly to point to the application's vector table. */
configASSERT( pxVectorTable[ portVECTOR_INDEX_SVC ] == SVC_Handler );
configASSERT( pxVectorTable[ portVECTOR_INDEX_PENDSV ] == PendSV_Handler );
}
#endif /* configCHECK_HANDLER_INSTALLATION */
#if ( ( configASSERT_DEFINED == 1 ) && ( portHAS_ARMV8M_MAIN_EXTENSION == 1 ) )
{
volatile uint32_t ulOriginalPriority;
volatile uint32_t ulImplementedPrioBits = 0;
volatile uint8_t ucMaxPriorityValue;
@ -1609,11 +1656,8 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
* "FromISR". FreeRTOS maintains separate thread and ISR API functions to
* ensure interrupt entry is as fast and simple as possible.
*
* Save the interrupt priority value that is about to be clobbered. */
ulOriginalPriority = portNVIC_SHPR2_REG;
/* Determine the number of priority bits available. First write to all
* possible bits. */
* First, determine the number of priority bits available. Write to all
* possible bits in the priority setting for SVCall. */
portNVIC_SHPR2_REG = 0xFF000000;
/* Read the value back to see how many bits stuck. */
@ -1636,7 +1680,6 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
/* Calculate the maximum acceptable priority group value for the number
* of bits read back. */
while( ( ucMaxPriorityValue & portTOP_BIT_OF_BYTE ) == portTOP_BIT_OF_BYTE )
{
ulImplementedPrioBits++;
@ -1674,16 +1717,14 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
* register. */
ulMaxPRIGROUPValue <<= portPRIGROUP_SHIFT;
ulMaxPRIGROUPValue &= portPRIORITY_GROUP_MASK;
/* Restore the clobbered interrupt priority register to its original
* value. */
portNVIC_SHPR2_REG = ulOriginalPriority;
}
#endif /* #if ( ( configASSERT_DEFINED == 1 ) && ( portHAS_ARMV8M_MAIN_EXTENSION == 1 ) ) */
/* Make PendSV, CallSV and SysTick the same priority as the kernel. */
/* Make PendSV and SysTick the lowest priority interrupts, and make SVCall
* the highest priority. */
portNVIC_SHPR3_REG |= portNVIC_PENDSV_PRI;
portNVIC_SHPR3_REG |= portNVIC_SYSTICK_PRI;
portNVIC_SHPR2_REG = 0;
#if ( configENABLE_MPU == 1 )
{

67
portable/GCC/ARM_CM23_NTZ/non_secure/port.c
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@ -80,6 +80,12 @@
#endif
/*-----------------------------------------------------------*/
/**
* @brief Prototype of all Interrupt Service Routines (ISRs).
*/
typedef void ( * portISR_t )( void );
/*-----------------------------------------------------------*/
/**
* @brief Constants required to manipulate the NVIC.
*/
@ -101,10 +107,18 @@
/**
* @brief Constants required to manipulate the SCB.
*/
#define portSCB_SYS_HANDLER_CTRL_STATE_REG ( *( volatile uint32_t * ) 0xe000ed24 )
#define portSCB_VTOR_REG ( *( ( portISR_t ** ) 0xe000ed08 ) )
#define portSCB_SYS_HANDLER_CTRL_STATE_REG ( *( ( volatile uint32_t * ) 0xe000ed24 ) )
#define portSCB_MEM_FAULT_ENABLE_BIT ( 1UL << 16UL )
/*-----------------------------------------------------------*/
/**
* @brief Constants used to check the installation of the FreeRTOS interrupt handlers.
*/
#define portVECTOR_INDEX_SVC ( 11 )
#define portVECTOR_INDEX_PENDSV ( 14 )
/*-----------------------------------------------------------*/
/**
* @brief Constants required to check the validity of an interrupt priority.
*/
@ -1598,9 +1612,42 @@ void vPortSVCHandler_C( uint32_t * pulCallerStackAddress ) /* PRIVILEGED_FUNCTIO
BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
{
/* An application can install FreeRTOS interrupt handlers in one of the
* folllowing ways:
* 1. Direct Routing - Install the functions SVC_Handler and PendSV_Handler
* for SVCall and PendSV interrupts respectively.
* 2. Indirect Routing - Install separate handlers for SVCall and PendSV
* interrupts and route program control from those handlers to
* SVC_Handler and PendSV_Handler functions.
*
* Applications that use Indirect Routing must set
* configCHECK_HANDLER_INSTALLATION to 0 in their FreeRTOSConfig.h. Direct
* routing, which is validated here when configCHECK_HANDLER_INSTALLATION
* is 1, should be preferred when possible. */
#if ( configCHECK_HANDLER_INSTALLATION == 1 )
{
const portISR_t * const pxVectorTable = portSCB_VTOR_REG;
/* Validate that the application has correctly installed the FreeRTOS
* handlers for SVCall and PendSV interrupts. We do not check the
* installation of the SysTick handler because the application may
* choose to drive the RTOS tick using a timer other than the SysTick
* timer by overriding the weak function vPortSetupTimerInterrupt().
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
* VTOR is not set correctly to point to the application's vector table. */
configASSERT( pxVectorTable[ portVECTOR_INDEX_SVC ] == SVC_Handler );
configASSERT( pxVectorTable[ portVECTOR_INDEX_PENDSV ] == PendSV_Handler );
}
#endif /* configCHECK_HANDLER_INSTALLATION */
#if ( ( configASSERT_DEFINED == 1 ) && ( portHAS_ARMV8M_MAIN_EXTENSION == 1 ) )
{
volatile uint32_t ulOriginalPriority;
volatile uint32_t ulImplementedPrioBits = 0;
volatile uint8_t ucMaxPriorityValue;
@ -1609,11 +1656,8 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
* "FromISR". FreeRTOS maintains separate thread and ISR API functions to
* ensure interrupt entry is as fast and simple as possible.
*
* Save the interrupt priority value that is about to be clobbered. */
ulOriginalPriority = portNVIC_SHPR2_REG;
/* Determine the number of priority bits available. First write to all
* possible bits. */
* First, determine the number of priority bits available. Write to all
* possible bits in the priority setting for SVCall. */
portNVIC_SHPR2_REG = 0xFF000000;
/* Read the value back to see how many bits stuck. */
@ -1636,7 +1680,6 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
/* Calculate the maximum acceptable priority group value for the number
* of bits read back. */
while( ( ucMaxPriorityValue & portTOP_BIT_OF_BYTE ) == portTOP_BIT_OF_BYTE )
{
ulImplementedPrioBits++;
@ -1674,16 +1717,14 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
* register. */
ulMaxPRIGROUPValue <<= portPRIGROUP_SHIFT;
ulMaxPRIGROUPValue &= portPRIORITY_GROUP_MASK;
/* Restore the clobbered interrupt priority register to its original
* value. */
portNVIC_SHPR2_REG = ulOriginalPriority;
}
#endif /* #if ( ( configASSERT_DEFINED == 1 ) && ( portHAS_ARMV8M_MAIN_EXTENSION == 1 ) ) */
/* Make PendSV, CallSV and SysTick the same priority as the kernel. */
/* Make PendSV and SysTick the lowest priority interrupts, and make SVCall
* the highest priority. */
portNVIC_SHPR3_REG |= portNVIC_PENDSV_PRI;
portNVIC_SHPR3_REG |= portNVIC_SYSTICK_PRI;
portNVIC_SHPR2_REG = 0;
#if ( configENABLE_MPU == 1 )
{

47
portable/GCC/ARM_CM3/port.c
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@ -34,10 +34,14 @@
#include "FreeRTOS.h"
#include "task.h"
/* Prototype of all Interrupt Service Routines (ISRs). */
typedef void ( * portISR_t )( void );
/* Constants required to manipulate the core. Registers first... */
#define portNVIC_SYSTICK_CTRL_REG ( *( ( volatile uint32_t * ) 0xe000e010 ) )
#define portNVIC_SYSTICK_LOAD_REG ( *( ( volatile uint32_t * ) 0xe000e014 ) )
#define portNVIC_SYSTICK_CURRENT_VALUE_REG ( *( ( volatile uint32_t * ) 0xe000e018 ) )
#define portNVIC_SHPR2_REG ( *( ( volatile uint32_t * ) 0xe000ed1c ) )
#define portNVIC_SHPR3_REG ( *( ( volatile uint32_t * ) 0xe000ed20 ) )
/* ...then bits in the registers. */
#define portNVIC_SYSTICK_CLK_BIT ( 1UL << 2UL )
@ -52,6 +56,11 @@
#define portNVIC_PENDSV_PRI ( ( ( uint32_t ) portMIN_INTERRUPT_PRIORITY ) << 16UL )
#define portNVIC_SYSTICK_PRI ( ( ( uint32_t ) portMIN_INTERRUPT_PRIORITY ) << 24UL )
/* Constants used to check the installation of the FreeRTOS interrupt handlers. */
#define portSCB_VTOR_REG ( *( ( portISR_t ** ) 0xE000ED08 ) )
#define portVECTOR_INDEX_SVC ( 11 )
#define portVECTOR_INDEX_PENDSV ( 14 )
/* Constants required to check the validity of an interrupt priority. */
#define portFIRST_USER_INTERRUPT_NUMBER ( 16 )
#define portNVIC_IP_REGISTERS_OFFSET_16 ( 0xE000E3F0 )
@ -259,6 +268,40 @@ static void prvPortStartFirstTask( void )
*/
BaseType_t xPortStartScheduler( void )
{
/* An application can install FreeRTOS interrupt handlers in one of the
* folllowing ways:
* 1. Direct Routing - Install the functions vPortSVCHandler and
* xPortPendSVHandler for SVCall and PendSV interrupts respectively.
* 2. Indirect Routing - Install separate handlers for SVCall and PendSV
* interrupts and route program control from those handlers to
* vPortSVCHandler and xPortPendSVHandler functions.
*
* Applications that use Indirect Routing must set
* configCHECK_HANDLER_INSTALLATION to 0 in their FreeRTOSConfig.h. Direct
* routing, which is validated here when configCHECK_HANDLER_INSTALLATION
* is 1, should be preferred when possible. */
#if ( configCHECK_HANDLER_INSTALLATION == 1 )
{
const portISR_t * const pxVectorTable = portSCB_VTOR_REG;
/* Validate that the application has correctly installed the FreeRTOS
* handlers for SVCall and PendSV interrupts. We do not check the
* installation of the SysTick handler because the application may
* choose to drive the RTOS tick using a timer other than the SysTick
* timer by overriding the weak function vPortSetupTimerInterrupt().
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
* VTOR is not set correctly to point to the application's vector table. */
configASSERT( pxVectorTable[ portVECTOR_INDEX_SVC ] == vPortSVCHandler );
configASSERT( pxVectorTable[ portVECTOR_INDEX_PENDSV ] == xPortPendSVHandler );
}
#endif /* configCHECK_HANDLER_INSTALLATION */
#if ( configASSERT_DEFINED == 1 )
{
volatile uint8_t ucOriginalPriority;
@ -343,9 +386,11 @@ BaseType_t xPortStartScheduler( void )
}
#endif /* configASSERT_DEFINED */
/* Make PendSV and SysTick the lowest priority interrupts. */
/* Make PendSV and SysTick the lowest priority interrupts, and make SVCall
* the highest priority. */
portNVIC_SHPR3_REG |= portNVIC_PENDSV_PRI;
portNVIC_SHPR3_REG |= portNVIC_SYSTICK_PRI;
portNVIC_SHPR2_REG = 0;
/* Start the timer that generates the tick ISR. Interrupts are disabled
* here already. */

67
portable/GCC/ARM_CM33/non_secure/port.c
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@ -80,6 +80,12 @@
#endif
/*-----------------------------------------------------------*/
/**
* @brief Prototype of all Interrupt Service Routines (ISRs).
*/
typedef void ( * portISR_t )( void );
/*-----------------------------------------------------------*/
/**
* @brief Constants required to manipulate the NVIC.
*/
@ -101,10 +107,18 @@
/**
* @brief Constants required to manipulate the SCB.
*/
#define portSCB_SYS_HANDLER_CTRL_STATE_REG ( *( volatile uint32_t * ) 0xe000ed24 )
#define portSCB_VTOR_REG ( *( ( portISR_t ** ) 0xe000ed08 ) )
#define portSCB_SYS_HANDLER_CTRL_STATE_REG ( *( ( volatile uint32_t * ) 0xe000ed24 ) )
#define portSCB_MEM_FAULT_ENABLE_BIT ( 1UL << 16UL )
/*-----------------------------------------------------------*/
/**
* @brief Constants used to check the installation of the FreeRTOS interrupt handlers.
*/
#define portVECTOR_INDEX_SVC ( 11 )
#define portVECTOR_INDEX_PENDSV ( 14 )
/*-----------------------------------------------------------*/
/**
* @brief Constants required to check the validity of an interrupt priority.
*/
@ -1598,9 +1612,42 @@ void vPortSVCHandler_C( uint32_t * pulCallerStackAddress ) /* PRIVILEGED_FUNCTIO
BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
{
/* An application can install FreeRTOS interrupt handlers in one of the
* folllowing ways:
* 1. Direct Routing - Install the functions SVC_Handler and PendSV_Handler
* for SVCall and PendSV interrupts respectively.
* 2. Indirect Routing - Install separate handlers for SVCall and PendSV
* interrupts and route program control from those handlers to
* SVC_Handler and PendSV_Handler functions.
*
* Applications that use Indirect Routing must set
* configCHECK_HANDLER_INSTALLATION to 0 in their FreeRTOSConfig.h. Direct
* routing, which is validated here when configCHECK_HANDLER_INSTALLATION
* is 1, should be preferred when possible. */
#if ( configCHECK_HANDLER_INSTALLATION == 1 )
{
const portISR_t * const pxVectorTable = portSCB_VTOR_REG;
/* Validate that the application has correctly installed the FreeRTOS
* handlers for SVCall and PendSV interrupts. We do not check the
* installation of the SysTick handler because the application may
* choose to drive the RTOS tick using a timer other than the SysTick
* timer by overriding the weak function vPortSetupTimerInterrupt().
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
* VTOR is not set correctly to point to the application's vector table. */
configASSERT( pxVectorTable[ portVECTOR_INDEX_SVC ] == SVC_Handler );
configASSERT( pxVectorTable[ portVECTOR_INDEX_PENDSV ] == PendSV_Handler );
}
#endif /* configCHECK_HANDLER_INSTALLATION */
#if ( ( configASSERT_DEFINED == 1 ) && ( portHAS_ARMV8M_MAIN_EXTENSION == 1 ) )
{
volatile uint32_t ulOriginalPriority;
volatile uint32_t ulImplementedPrioBits = 0;
volatile uint8_t ucMaxPriorityValue;
@ -1609,11 +1656,8 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
* "FromISR". FreeRTOS maintains separate thread and ISR API functions to
* ensure interrupt entry is as fast and simple as possible.
*
* Save the interrupt priority value that is about to be clobbered. */
ulOriginalPriority = portNVIC_SHPR2_REG;
/* Determine the number of priority bits available. First write to all
* possible bits. */
* First, determine the number of priority bits available. Write to all
* possible bits in the priority setting for SVCall. */
portNVIC_SHPR2_REG = 0xFF000000;
/* Read the value back to see how many bits stuck. */
@ -1636,7 +1680,6 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
/* Calculate the maximum acceptable priority group value for the number
* of bits read back. */
while( ( ucMaxPriorityValue & portTOP_BIT_OF_BYTE ) == portTOP_BIT_OF_BYTE )
{
ulImplementedPrioBits++;
@ -1674,16 +1717,14 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
* register. */
ulMaxPRIGROUPValue <<= portPRIGROUP_SHIFT;
ulMaxPRIGROUPValue &= portPRIORITY_GROUP_MASK;
/* Restore the clobbered interrupt priority register to its original
* value. */
portNVIC_SHPR2_REG = ulOriginalPriority;
}
#endif /* #if ( ( configASSERT_DEFINED == 1 ) && ( portHAS_ARMV8M_MAIN_EXTENSION == 1 ) ) */
/* Make PendSV, CallSV and SysTick the same priority as the kernel. */
/* Make PendSV and SysTick the lowest priority interrupts, and make SVCall
* the highest priority. */
portNVIC_SHPR3_REG |= portNVIC_PENDSV_PRI;
portNVIC_SHPR3_REG |= portNVIC_SYSTICK_PRI;
portNVIC_SHPR2_REG = 0;
#if ( configENABLE_MPU == 1 )
{

67
portable/GCC/ARM_CM33_NTZ/non_secure/port.c
Unescape Escape View File

@ -80,6 +80,12 @@
#endif
/*-----------------------------------------------------------*/
/**
* @brief Prototype of all Interrupt Service Routines (ISRs).
*/
typedef void ( * portISR_t )( void );
/*-----------------------------------------------------------*/
/**
* @brief Constants required to manipulate the NVIC.
*/
@ -101,10 +107,18 @@
/**
* @brief Constants required to manipulate the SCB.
*/
#define portSCB_SYS_HANDLER_CTRL_STATE_REG ( *( volatile uint32_t * ) 0xe000ed24 )
#define portSCB_VTOR_REG ( *( ( portISR_t ** ) 0xe000ed08 ) )
#define portSCB_SYS_HANDLER_CTRL_STATE_REG ( *( ( volatile uint32_t * ) 0xe000ed24 ) )
#define portSCB_MEM_FAULT_ENABLE_BIT ( 1UL << 16UL )
/*-----------------------------------------------------------*/
/**
* @brief Constants used to check the installation of the FreeRTOS interrupt handlers.
*/
#define portVECTOR_INDEX_SVC ( 11 )
#define portVECTOR_INDEX_PENDSV ( 14 )
/*-----------------------------------------------------------*/
/**
* @brief Constants required to check the validity of an interrupt priority.
*/
@ -1598,9 +1612,42 @@ void vPortSVCHandler_C( uint32_t * pulCallerStackAddress ) /* PRIVILEGED_FUNCTIO
BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
{
/* An application can install FreeRTOS interrupt handlers in one of the
* folllowing ways:
* 1. Direct Routing - Install the functions SVC_Handler and PendSV_Handler
* for SVCall and PendSV interrupts respectively.
* 2. Indirect Routing - Install separate handlers for SVCall and PendSV
* interrupts and route program control from those handlers to
* SVC_Handler and PendSV_Handler functions.
*
* Applications that use Indirect Routing must set
* configCHECK_HANDLER_INSTALLATION to 0 in their FreeRTOSConfig.h. Direct
* routing, which is validated here when configCHECK_HANDLER_INSTALLATION
* is 1, should be preferred when possible. */
#if ( configCHECK_HANDLER_INSTALLATION == 1 )
{
const portISR_t * const pxVectorTable = portSCB_VTOR_REG;
/* Validate that the application has correctly installed the FreeRTOS
* handlers for SVCall and PendSV interrupts. We do not check the
* installation of the SysTick handler because the application may
* choose to drive the RTOS tick using a timer other than the SysTick
* timer by overriding the weak function vPortSetupTimerInterrupt().
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
* VTOR is not set correctly to point to the application's vector table. */
configASSERT( pxVectorTable[ portVECTOR_INDEX_SVC ] == SVC_Handler );
configASSERT( pxVectorTable[ portVECTOR_INDEX_PENDSV ] == PendSV_Handler );
}
#endif /* configCHECK_HANDLER_INSTALLATION */
#if ( ( configASSERT_DEFINED == 1 ) && ( portHAS_ARMV8M_MAIN_EXTENSION == 1 ) )
{
volatile uint32_t ulOriginalPriority;
volatile uint32_t ulImplementedPrioBits = 0;
volatile uint8_t ucMaxPriorityValue;
@ -1609,11 +1656,8 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
* "FromISR". FreeRTOS maintains separate thread and ISR API functions to
* ensure interrupt entry is as fast and simple as possible.
*
* Save the interrupt priority value that is about to be clobbered. */
ulOriginalPriority = portNVIC_SHPR2_REG;
/* Determine the number of priority bits available. First write to all
* possible bits. */
* First, determine the number of priority bits available. Write to all
* possible bits in the priority setting for SVCall. */
portNVIC_SHPR2_REG = 0xFF000000;
/* Read the value back to see how many bits stuck. */
@ -1636,7 +1680,6 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
/* Calculate the maximum acceptable priority group value for the number
* of bits read back. */
while( ( ucMaxPriorityValue & portTOP_BIT_OF_BYTE ) == portTOP_BIT_OF_BYTE )
{
ulImplementedPrioBits++;
@ -1674,16 +1717,14 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
* register. */
ulMaxPRIGROUPValue <<= portPRIGROUP_SHIFT;
ulMaxPRIGROUPValue &= portPRIORITY_GROUP_MASK;
/* Restore the clobbered interrupt priority register to its original
* value. */
portNVIC_SHPR2_REG = ulOriginalPriority;
}
#endif /* #if ( ( configASSERT_DEFINED == 1 ) && ( portHAS_ARMV8M_MAIN_EXTENSION == 1 ) ) */
/* Make PendSV, CallSV and SysTick the same priority as the kernel. */
/* Make PendSV and SysTick the lowest priority interrupts, and make SVCall
* the highest priority. */
portNVIC_SHPR3_REG |= portNVIC_PENDSV_PRI;
portNVIC_SHPR3_REG |= portNVIC_SYSTICK_PRI;
portNVIC_SHPR2_REG = 0;
#if ( configENABLE_MPU == 1 )
{

67
portable/GCC/ARM_CM35P/non_secure/port.c
Unescape Escape View File

@ -80,6 +80,12 @@
#endif
/*-----------------------------------------------------------*/
/**
* @brief Prototype of all Interrupt Service Routines (ISRs).
*/
typedef void ( * portISR_t )( void );
/*-----------------------------------------------------------*/
/**
* @brief Constants required to manipulate the NVIC.
*/
@ -101,10 +107,18 @@
/**
* @brief Constants required to manipulate the SCB.
*/
#define portSCB_SYS_HANDLER_CTRL_STATE_REG ( *( volatile uint32_t * ) 0xe000ed24 )
#define portSCB_VTOR_REG ( *( ( portISR_t ** ) 0xe000ed08 ) )
#define portSCB_SYS_HANDLER_CTRL_STATE_REG ( *( ( volatile uint32_t * ) 0xe000ed24 ) )
#define portSCB_MEM_FAULT_ENABLE_BIT ( 1UL << 16UL )
/*-----------------------------------------------------------*/
/**
* @brief Constants used to check the installation of the FreeRTOS interrupt handlers.
*/
#define portVECTOR_INDEX_SVC ( 11 )
#define portVECTOR_INDEX_PENDSV ( 14 )
/*-----------------------------------------------------------*/
/**
* @brief Constants required to check the validity of an interrupt priority.
*/
@ -1598,9 +1612,42 @@ void vPortSVCHandler_C( uint32_t * pulCallerStackAddress ) /* PRIVILEGED_FUNCTIO
BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
{
/* An application can install FreeRTOS interrupt handlers in one of the
* folllowing ways:
* 1. Direct Routing - Install the functions SVC_Handler and PendSV_Handler
* for SVCall and PendSV interrupts respectively.
* 2. Indirect Routing - Install separate handlers for SVCall and PendSV
* interrupts and route program control from those handlers to
* SVC_Handler and PendSV_Handler functions.
*
* Applications that use Indirect Routing must set
* configCHECK_HANDLER_INSTALLATION to 0 in their FreeRTOSConfig.h. Direct
* routing, which is validated here when configCHECK_HANDLER_INSTALLATION
* is 1, should be preferred when possible. */
#if ( configCHECK_HANDLER_INSTALLATION == 1 )
{
const portISR_t * const pxVectorTable = portSCB_VTOR_REG;
/* Validate that the application has correctly installed the FreeRTOS
* handlers for SVCall and PendSV interrupts. We do not check the
* installation of the SysTick handler because the application may
* choose to drive the RTOS tick using a timer other than the SysTick
* timer by overriding the weak function vPortSetupTimerInterrupt().
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
* VTOR is not set correctly to point to the application's vector table. */
configASSERT( pxVectorTable[ portVECTOR_INDEX_SVC ] == SVC_Handler );
configASSERT( pxVectorTable[ portVECTOR_INDEX_PENDSV ] == PendSV_Handler );
}
#endif /* configCHECK_HANDLER_INSTALLATION */
#if ( ( configASSERT_DEFINED == 1 ) && ( portHAS_ARMV8M_MAIN_EXTENSION == 1 ) )
{
volatile uint32_t ulOriginalPriority;
volatile uint32_t ulImplementedPrioBits = 0;
volatile uint8_t ucMaxPriorityValue;
@ -1609,11 +1656,8 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
* "FromISR". FreeRTOS maintains separate thread and ISR API functions to
* ensure interrupt entry is as fast and simple as possible.
*
* Save the interrupt priority value that is about to be clobbered. */
ulOriginalPriority = portNVIC_SHPR2_REG;
/* Determine the number of priority bits available. First write to all
* possible bits. */
* First, determine the number of priority bits available. Write to all
* possible bits in the priority setting for SVCall. */
portNVIC_SHPR2_REG = 0xFF000000;
/* Read the value back to see how many bits stuck. */
@ -1636,7 +1680,6 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
/* Calculate the maximum acceptable priority group value for the number
* of bits read back. */
while( ( ucMaxPriorityValue & portTOP_BIT_OF_BYTE ) == portTOP_BIT_OF_BYTE )
{
ulImplementedPrioBits++;
@ -1674,16 +1717,14 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
* register. */
ulMaxPRIGROUPValue <<= portPRIGROUP_SHIFT;
ulMaxPRIGROUPValue &= portPRIORITY_GROUP_MASK;
/* Restore the clobbered interrupt priority register to its original
* value. */
portNVIC_SHPR2_REG = ulOriginalPriority;
}
#endif /* #if ( ( configASSERT_DEFINED == 1 ) && ( portHAS_ARMV8M_MAIN_EXTENSION == 1 ) ) */
/* Make PendSV, CallSV and SysTick the same priority as the kernel. */
/* Make PendSV and SysTick the lowest priority interrupts, and make SVCall
* the highest priority. */
portNVIC_SHPR3_REG |= portNVIC_PENDSV_PRI;
portNVIC_SHPR3_REG |= portNVIC_SYSTICK_PRI;
portNVIC_SHPR2_REG = 0;
#if ( configENABLE_MPU == 1 )
{

67
portable/GCC/ARM_CM35P_NTZ/non_secure/port.c
Unescape Escape View File

@ -80,6 +80,12 @@
#endif
/*-----------------------------------------------------------*/
/**
* @brief Prototype of all Interrupt Service Routines (ISRs).
*/
typedef void ( * portISR_t )( void );
/*-----------------------------------------------------------*/
/**
* @brief Constants required to manipulate the NVIC.
*/
@ -101,10 +107,18 @@
/**
* @brief Constants required to manipulate the SCB.
*/
#define portSCB_SYS_HANDLER_CTRL_STATE_REG ( *( volatile uint32_t * ) 0xe000ed24 )
#define portSCB_VTOR_REG ( *( ( portISR_t ** ) 0xe000ed08 ) )
#define portSCB_SYS_HANDLER_CTRL_STATE_REG ( *( ( volatile uint32_t * ) 0xe000ed24 ) )
#define portSCB_MEM_FAULT_ENABLE_BIT ( 1UL << 16UL )
/*-----------------------------------------------------------*/
/**
* @brief Constants used to check the installation of the FreeRTOS interrupt handlers.
*/
#define portVECTOR_INDEX_SVC ( 11 )
#define portVECTOR_INDEX_PENDSV ( 14 )
/*-----------------------------------------------------------*/
/**
* @brief Constants required to check the validity of an interrupt priority.
*/
@ -1598,9 +1612,42 @@ void vPortSVCHandler_C( uint32_t * pulCallerStackAddress ) /* PRIVILEGED_FUNCTIO
BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
{
/* An application can install FreeRTOS interrupt handlers in one of the
* folllowing ways:
* 1. Direct Routing - Install the functions SVC_Handler and PendSV_Handler
* for SVCall and PendSV interrupts respectively.
* 2. Indirect Routing - Install separate handlers for SVCall and PendSV
* interrupts and route program control from those handlers to
* SVC_Handler and PendSV_Handler functions.
*
* Applications that use Indirect Routing must set
* configCHECK_HANDLER_INSTALLATION to 0 in their FreeRTOSConfig.h. Direct
* routing, which is validated here when configCHECK_HANDLER_INSTALLATION
* is 1, should be preferred when possible. */
#if ( configCHECK_HANDLER_INSTALLATION == 1 )
{
const portISR_t * const pxVectorTable = portSCB_VTOR_REG;
/* Validate that the application has correctly installed the FreeRTOS
* handlers for SVCall and PendSV interrupts. We do not check the
* installation of the SysTick handler because the application may
* choose to drive the RTOS tick using a timer other than the SysTick
* timer by overriding the weak function vPortSetupTimerInterrupt().
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
* VTOR is not set correctly to point to the application's vector table. */
configASSERT( pxVectorTable[ portVECTOR_INDEX_SVC ] == SVC_Handler );
configASSERT( pxVectorTable[ portVECTOR_INDEX_PENDSV ] == PendSV_Handler );
}
#endif /* configCHECK_HANDLER_INSTALLATION */
#if ( ( configASSERT_DEFINED == 1 ) && ( portHAS_ARMV8M_MAIN_EXTENSION == 1 ) )
{
volatile uint32_t ulOriginalPriority;
volatile uint32_t ulImplementedPrioBits = 0;
volatile uint8_t ucMaxPriorityValue;
@ -1609,11 +1656,8 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
* "FromISR". FreeRTOS maintains separate thread and ISR API functions to
* ensure interrupt entry is as fast and simple as possible.
*
* Save the interrupt priority value that is about to be clobbered. */
ulOriginalPriority = portNVIC_SHPR2_REG;
/* Determine the number of priority bits available. First write to all
* possible bits. */
* First, determine the number of priority bits available. Write to all
* possible bits in the priority setting for SVCall. */
portNVIC_SHPR2_REG = 0xFF000000;
/* Read the value back to see how many bits stuck. */
@ -1636,7 +1680,6 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
/* Calculate the maximum acceptable priority group value for the number
* of bits read back. */
while( ( ucMaxPriorityValue & portTOP_BIT_OF_BYTE ) == portTOP_BIT_OF_BYTE )
{
ulImplementedPrioBits++;
@ -1674,16 +1717,14 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
* register. */
ulMaxPRIGROUPValue <<= portPRIGROUP_SHIFT;
ulMaxPRIGROUPValue &= portPRIORITY_GROUP_MASK;
/* Restore the clobbered interrupt priority register to its original
* value. */
portNVIC_SHPR2_REG = ulOriginalPriority;
}
#endif /* #if ( ( configASSERT_DEFINED == 1 ) && ( portHAS_ARMV8M_MAIN_EXTENSION == 1 ) ) */
/* Make PendSV, CallSV and SysTick the same priority as the kernel. */
/* Make PendSV and SysTick the lowest priority interrupts, and make SVCall
* the highest priority. */
portNVIC_SHPR3_REG |= portNVIC_PENDSV_PRI;
portNVIC_SHPR3_REG |= portNVIC_SYSTICK_PRI;
portNVIC_SHPR2_REG = 0;
#if ( configENABLE_MPU == 1 )
{

51
portable/GCC/ARM_CM3_MPU/port.c
Unescape Escape View File

@ -58,6 +58,9 @@
#define configALLOW_UNPRIVILEGED_CRITICAL_SECTIONS 1
#endif
/* Prototype of all Interrupt Service Routines (ISRs). */
typedef void ( * portISR_t )( void );
/* Constants required to access and manipulate the NVIC. */
#define portNVIC_SYSTICK_CTRL_REG ( *( ( volatile uint32_t * ) 0xe000e010 ) )
#define portNVIC_SYSTICK_LOAD_REG ( *( ( volatile uint32_t * ) 0xe000e014 ) )
@ -87,7 +90,6 @@
#define portMIN_INTERRUPT_PRIORITY ( 255UL )
#define portNVIC_PENDSV_PRI ( ( ( uint32_t ) portMIN_INTERRUPT_PRIORITY ) << 16UL )
#define portNVIC_SYSTICK_PRI ( ( ( uint32_t ) portMIN_INTERRUPT_PRIORITY ) << 24UL )
#define portNVIC_SVC_PRI ( ( ( uint32_t ) configMAX_SYSCALL_INTERRUPT_PRIORITY - 1UL ) << 24UL )
/* Constants required to set up the initial stack. */
#define portINITIAL_XPSR ( 0x01000000 )
@ -95,6 +97,11 @@
#define portINITIAL_CONTROL_IF_UNPRIVILEGED ( 0x03 )
#define portINITIAL_CONTROL_IF_PRIVILEGED ( 0x02 )
/* Constants used to check the installation of the FreeRTOS interrupt handlers. */
#define portSCB_VTOR_REG ( *( ( portISR_t ** ) 0xE000ED08 ) )
#define portVECTOR_INDEX_SVC ( 11 )
#define portVECTOR_INDEX_PENDSV ( 14 )
/* Constants required to check the validity of an interrupt priority. */
#define portFIRST_USER_INTERRUPT_NUMBER ( 16 )
#define portNVIC_IP_REGISTERS_OFFSET_16 ( 0xE000E3F0 )
@ -414,7 +421,6 @@ void vSVCHandler_C( uint32_t * pulParam ) /* PRIVILEGED_FUNCTION */
switch( ucSVCNumber )
{
case portSVC_START_SCHEDULER:
portNVIC_SHPR2_REG |= portNVIC_SVC_PRI;
prvRestoreContextOfFirstTask();
break;
@ -737,6 +743,40 @@ static void prvRestoreContextOfFirstTask( void )
*/
BaseType_t xPortStartScheduler( void )
{
/* An application can install FreeRTOS interrupt handlers in one of the
* folllowing ways:
* 1. Direct Routing - Install the functions vPortSVCHandler and
* xPortPendSVHandler for SVCall and PendSV interrupts respectively.
* 2. Indirect Routing - Install separate handlers for SVCall and PendSV
* interrupts and route program control from those handlers to
* vPortSVCHandler and xPortPendSVHandler functions.
*
* Applications that use Indirect Routing must set
* configCHECK_HANDLER_INSTALLATION to 0 in their FreeRTOSConfig.h. Direct
* routing, which is validated here when configCHECK_HANDLER_INSTALLATION
* is 1, should be preferred when possible. */
#if ( configCHECK_HANDLER_INSTALLATION == 1 )
{
const portISR_t * const pxVectorTable = portSCB_VTOR_REG;
/* Validate that the application has correctly installed the FreeRTOS
* handlers for SVCall and PendSV interrupts. We do not check the
* installation of the SysTick handler because the application may
* choose to drive the RTOS tick using a timer other than the SysTick
* timer by overriding the weak function vPortSetupTimerInterrupt().
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
* VTOR is not set correctly to point to the application's vector table. */
configASSERT( pxVectorTable[ portVECTOR_INDEX_SVC ] == vPortSVCHandler );
configASSERT( pxVectorTable[ portVECTOR_INDEX_PENDSV ] == xPortPendSVHandler );
}
#endif /* configCHECK_HANDLER_INSTALLATION */
#if ( configASSERT_DEFINED == 1 )
{
volatile uint8_t ucOriginalPriority;
@ -821,11 +861,12 @@ BaseType_t xPortStartScheduler( void )
}
#endif /* configASSERT_DEFINED */
/* Make PendSV and SysTick the same priority as the kernel, and the SVC
* handler higher priority so it can be used to exit a critical section (where
* lower priorities are masked). */
/* Make PendSV and SysTick the lowest priority interrupts, and make SVCall
* the highest priority. */
portNVIC_SHPR3_REG |= portNVIC_PENDSV_PRI;
portNVIC_SHPR3_REG |= portNVIC_SYSTICK_PRI;
portNVIC_SHPR2_REG = 0;
/* Configure the regions in the MPU that are common to all tasks. */
prvSetupMPU();

47
portable/GCC/ARM_CM4F/port.c
Unescape Escape View File

@ -38,10 +38,14 @@
#error This port can only be used when the project options are configured to enable hardware floating point support.
#endif
/* Prototype of all Interrupt Service Routines (ISRs). */
typedef void ( * portISR_t )( void );
/* Constants required to manipulate the core. Registers first... */
#define portNVIC_SYSTICK_CTRL_REG ( *( ( volatile uint32_t * ) 0xe000e010 ) )
#define portNVIC_SYSTICK_LOAD_REG ( *( ( volatile uint32_t * ) 0xe000e014 ) )
#define portNVIC_SYSTICK_CURRENT_VALUE_REG ( *( ( volatile uint32_t * ) 0xe000e018 ) )
#define portNVIC_SHPR2_REG ( *( ( volatile uint32_t * ) 0xe000ed1c ) )
#define portNVIC_SHPR3_REG ( *( ( volatile uint32_t * ) 0xe000ed20 ) )
/* ...then bits in the registers. */
#define portNVIC_SYSTICK_CLK_BIT ( 1UL << 2UL )
@ -62,6 +66,11 @@
#define portNVIC_PENDSV_PRI ( ( ( uint32_t ) portMIN_INTERRUPT_PRIORITY ) << 16UL )
#define portNVIC_SYSTICK_PRI ( ( ( uint32_t ) portMIN_INTERRUPT_PRIORITY ) << 24UL )
/* Constants used to check the installation of the FreeRTOS interrupt handlers. */
#define portSCB_VTOR_REG ( *( ( portISR_t ** ) 0xE000ED08 ) )
#define portVECTOR_INDEX_SVC ( 11 )
#define portVECTOR_INDEX_PENDSV ( 14 )
/* Constants required to check the validity of an interrupt priority. */
#define portFIRST_USER_INTERRUPT_NUMBER ( 16 )
#define portNVIC_IP_REGISTERS_OFFSET_16 ( 0xE000E3F0 )
@ -302,6 +311,40 @@ BaseType_t xPortStartScheduler( void )
configASSERT( portCPUID != portCORTEX_M7_r0p1_ID );
configASSERT( portCPUID != portCORTEX_M7_r0p0_ID );
/* An application can install FreeRTOS interrupt handlers in one of the
* folllowing ways:
* 1. Direct Routing - Install the functions vPortSVCHandler and
* xPortPendSVHandler for SVCall and PendSV interrupts respectively.
* 2. Indirect Routing - Install separate handlers for SVCall and PendSV
* interrupts and route program control from those handlers to
* vPortSVCHandler and xPortPendSVHandler functions.
*
* Applications that use Indirect Routing must set
* configCHECK_HANDLER_INSTALLATION to 0 in their FreeRTOSConfig.h. Direct
* routing, which is validated here when configCHECK_HANDLER_INSTALLATION
* is 1, should be preferred when possible. */
#if ( configCHECK_HANDLER_INSTALLATION == 1 )
{
const portISR_t * const pxVectorTable = portSCB_VTOR_REG;
/* Validate that the application has correctly installed the FreeRTOS
* handlers for SVCall and PendSV interrupts. We do not check the
* installation of the SysTick handler because the application may
* choose to drive the RTOS tick using a timer other than the SysTick
* timer by overriding the weak function vPortSetupTimerInterrupt().
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
* VTOR is not set correctly to point to the application's vector table. */
configASSERT( pxVectorTable[ portVECTOR_INDEX_SVC ] == vPortSVCHandler );
configASSERT( pxVectorTable[ portVECTOR_INDEX_PENDSV ] == xPortPendSVHandler );
}
#endif /* configCHECK_HANDLER_INSTALLATION */
#if ( configASSERT_DEFINED == 1 )
{
volatile uint8_t ucOriginalPriority;
@ -386,9 +429,11 @@ BaseType_t xPortStartScheduler( void )
}
#endif /* configASSERT_DEFINED */
/* Make PendSV and SysTick the lowest priority interrupts. */
/* Make PendSV and SysTick the lowest priority interrupts, and make SVCall
* the highest priority. */
portNVIC_SHPR3_REG |= portNVIC_PENDSV_PRI;
portNVIC_SHPR3_REG |= portNVIC_SYSTICK_PRI;
portNVIC_SHPR2_REG = 0;
/* Start the timer that generates the tick ISR. Interrupts are disabled
* here already. */

50
portable/GCC/ARM_CM4_MPU/port.c
Unescape Escape View File

@ -62,6 +62,9 @@
#define configALLOW_UNPRIVILEGED_CRITICAL_SECTIONS 1
#endif
/* Prototype of all Interrupt Service Routines (ISRs). */
typedef void ( * portISR_t )( void );
/* Constants required to access and manipulate the NVIC. */
#define portNVIC_SYSTICK_CTRL_REG ( *( ( volatile uint32_t * ) 0xe000e010 ) )
#define portNVIC_SYSTICK_LOAD_REG ( *( ( volatile uint32_t * ) 0xe000e014 ) )
@ -97,7 +100,6 @@
#define portMIN_INTERRUPT_PRIORITY ( 255UL )
#define portNVIC_PENDSV_PRI ( ( ( uint32_t ) portMIN_INTERRUPT_PRIORITY ) << 16UL )
#define portNVIC_SYSTICK_PRI ( ( ( uint32_t ) portMIN_INTERRUPT_PRIORITY ) << 24UL )
#define portNVIC_SVC_PRI ( ( ( uint32_t ) configMAX_SYSCALL_INTERRUPT_PRIORITY - 1UL ) << 24UL )
/* Constants required to manipulate the VFP. */
#define portFPCCR ( ( volatile uint32_t * ) 0xe000ef34UL ) /* Floating point context control register. */
@ -109,6 +111,11 @@
#define portINITIAL_CONTROL_IF_UNPRIVILEGED ( 0x03 )
#define portINITIAL_CONTROL_IF_PRIVILEGED ( 0x02 )
/* Constants used to check the installation of the FreeRTOS interrupt handlers. */
#define portSCB_VTOR_REG ( *( ( portISR_t ** ) 0xE000ED08 ) )
#define portVECTOR_INDEX_SVC ( 11 )
#define portVECTOR_INDEX_PENDSV ( 14 )
/* Constants required to check the validity of an interrupt priority. */
#define portFIRST_USER_INTERRUPT_NUMBER ( 16 )
#define portNVIC_IP_REGISTERS_OFFSET_16 ( 0xE000E3F0 )
@ -448,7 +455,6 @@ void vSVCHandler_C( uint32_t * pulParam ) /* PRIVILEGED_FUNCTION */
switch( ucSVCNumber )
{
case portSVC_START_SCHEDULER:
portNVIC_SHPR2_REG |= portNVIC_SVC_PRI;
prvRestoreContextOfFirstTask();
break;
@ -823,6 +829,40 @@ BaseType_t xPortStartScheduler( void )
configASSERT( portCPUID != portCORTEX_M7_r0p0_ID );
#endif
/* An application can install FreeRTOS interrupt handlers in one of the
* folllowing ways:
* 1. Direct Routing - Install the functions vPortSVCHandler and
* xPortPendSVHandler for SVCall and PendSV interrupts respectively.
* 2. Indirect Routing - Install separate handlers for SVCall and PendSV
* interrupts and route program control from those handlers to
* vPortSVCHandler and xPortPendSVHandler functions.
*
* Applications that use Indirect Routing must set
* configCHECK_HANDLER_INSTALLATION to 0 in their FreeRTOSConfig.h. Direct
* routing, which is validated here when configCHECK_HANDLER_INSTALLATION
* is 1, should be preferred when possible. */
#if ( configCHECK_HANDLER_INSTALLATION == 1 )
{
const portISR_t * const pxVectorTable = portSCB_VTOR_REG;
/* Validate that the application has correctly installed the FreeRTOS
* handlers for SVCall and PendSV interrupts. We do not check the
* installation of the SysTick handler because the application may
* choose to drive the RTOS tick using a timer other than the SysTick
* timer by overriding the weak function vPortSetupTimerInterrupt().
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
* VTOR is not set correctly to point to the application's vector table. */
configASSERT( pxVectorTable[ portVECTOR_INDEX_SVC ] == vPortSVCHandler );
configASSERT( pxVectorTable[ portVECTOR_INDEX_PENDSV ] == xPortPendSVHandler );
}
#endif /* configCHECK_HANDLER_INSTALLATION */
#if ( configASSERT_DEFINED == 1 )
{
volatile uint8_t ucOriginalPriority;
@ -907,11 +947,11 @@ BaseType_t xPortStartScheduler( void )
}
#endif /* configASSERT_DEFINED */
/* Make PendSV and SysTick the same priority as the kernel, and the SVC
* handler higher priority so it can be used to exit a critical section (where
* lower priorities are masked). */
/* Make PendSV and SysTick the lowest priority interrupts, and make SVCall
* the highest priority. */
portNVIC_SHPR3_REG |= portNVIC_PENDSV_PRI;
portNVIC_SHPR3_REG |= portNVIC_SYSTICK_PRI;
portNVIC_SHPR2_REG = 0;
/* Configure the regions in the MPU that are common to all tasks. */
prvSetupMPU();

67
portable/GCC/ARM_CM55/non_secure/port.c
Unescape Escape View File

@ -80,6 +80,12 @@
#endif
/*-----------------------------------------------------------*/
/**
* @brief Prototype of all Interrupt Service Routines (ISRs).
*/
typedef void ( * portISR_t )( void );
/*-----------------------------------------------------------*/
/**
* @brief Constants required to manipulate the NVIC.
*/
@ -101,10 +107,18 @@
/**
* @brief Constants required to manipulate the SCB.
*/
#define portSCB_SYS_HANDLER_CTRL_STATE_REG ( *( volatile uint32_t * ) 0xe000ed24 )
#define portSCB_VTOR_REG ( *( ( portISR_t ** ) 0xe000ed08 ) )
#define portSCB_SYS_HANDLER_CTRL_STATE_REG ( *( ( volatile uint32_t * ) 0xe000ed24 ) )
#define portSCB_MEM_FAULT_ENABLE_BIT ( 1UL << 16UL )
/*-----------------------------------------------------------*/
/**
* @brief Constants used to check the installation of the FreeRTOS interrupt handlers.
*/
#define portVECTOR_INDEX_SVC ( 11 )
#define portVECTOR_INDEX_PENDSV ( 14 )
/*-----------------------------------------------------------*/
/**
* @brief Constants required to check the validity of an interrupt priority.
*/
@ -1598,9 +1612,42 @@ void vPortSVCHandler_C( uint32_t * pulCallerStackAddress ) /* PRIVILEGED_FUNCTIO
BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
{
/* An application can install FreeRTOS interrupt handlers in one of the
* folllowing ways:
* 1. Direct Routing - Install the functions SVC_Handler and PendSV_Handler
* for SVCall and PendSV interrupts respectively.
* 2. Indirect Routing - Install separate handlers for SVCall and PendSV
* interrupts and route program control from those handlers to
* SVC_Handler and PendSV_Handler functions.
*
* Applications that use Indirect Routing must set
* configCHECK_HANDLER_INSTALLATION to 0 in their FreeRTOSConfig.h. Direct
* routing, which is validated here when configCHECK_HANDLER_INSTALLATION
* is 1, should be preferred when possible. */
#if ( configCHECK_HANDLER_INSTALLATION == 1 )
{
const portISR_t * const pxVectorTable = portSCB_VTOR_REG;
/* Validate that the application has correctly installed the FreeRTOS
* handlers for SVCall and PendSV interrupts. We do not check the
* installation of the SysTick handler because the application may
* choose to drive the RTOS tick using a timer other than the SysTick
* timer by overriding the weak function vPortSetupTimerInterrupt().
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
* VTOR is not set correctly to point to the application's vector table. */
configASSERT( pxVectorTable[ portVECTOR_INDEX_SVC ] == SVC_Handler );
configASSERT( pxVectorTable[ portVECTOR_INDEX_PENDSV ] == PendSV_Handler );
}
#endif /* configCHECK_HANDLER_INSTALLATION */
#if ( ( configASSERT_DEFINED == 1 ) && ( portHAS_ARMV8M_MAIN_EXTENSION == 1 ) )
{
volatile uint32_t ulOriginalPriority;
volatile uint32_t ulImplementedPrioBits = 0;
volatile uint8_t ucMaxPriorityValue;
@ -1609,11 +1656,8 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
* "FromISR". FreeRTOS maintains separate thread and ISR API functions to
* ensure interrupt entry is as fast and simple as possible.
*
* Save the interrupt priority value that is about to be clobbered. */
ulOriginalPriority = portNVIC_SHPR2_REG;
/* Determine the number of priority bits available. First write to all
* possible bits. */
* First, determine the number of priority bits available. Write to all
* possible bits in the priority setting for SVCall. */
portNVIC_SHPR2_REG = 0xFF000000;
/* Read the value back to see how many bits stuck. */
@ -1636,7 +1680,6 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
/* Calculate the maximum acceptable priority group value for the number
* of bits read back. */
while( ( ucMaxPriorityValue & portTOP_BIT_OF_BYTE ) == portTOP_BIT_OF_BYTE )
{
ulImplementedPrioBits++;
@ -1674,16 +1717,14 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
* register. */
ulMaxPRIGROUPValue <<= portPRIGROUP_SHIFT;
ulMaxPRIGROUPValue &= portPRIORITY_GROUP_MASK;
/* Restore the clobbered interrupt priority register to its original
* value. */
portNVIC_SHPR2_REG = ulOriginalPriority;
}
#endif /* #if ( ( configASSERT_DEFINED == 1 ) && ( portHAS_ARMV8M_MAIN_EXTENSION == 1 ) ) */
/* Make PendSV, CallSV and SysTick the same priority as the kernel. */
/* Make PendSV and SysTick the lowest priority interrupts, and make SVCall
* the highest priority. */
portNVIC_SHPR3_REG |= portNVIC_PENDSV_PRI;
portNVIC_SHPR3_REG |= portNVIC_SYSTICK_PRI;
portNVIC_SHPR2_REG = 0;
#if ( configENABLE_MPU == 1 )
{

67
portable/GCC/ARM_CM55_NTZ/non_secure/port.c
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@ -80,6 +80,12 @@
#endif
/*-----------------------------------------------------------*/
/**
* @brief Prototype of all Interrupt Service Routines (ISRs).
*/
typedef void ( * portISR_t )( void );
/*-----------------------------------------------------------*/
/**
* @brief Constants required to manipulate the NVIC.
*/
@ -101,10 +107,18 @@
/**
* @brief Constants required to manipulate the SCB.
*/
#define portSCB_SYS_HANDLER_CTRL_STATE_REG ( *( volatile uint32_t * ) 0xe000ed24 )
#define portSCB_VTOR_REG ( *( ( portISR_t ** ) 0xe000ed08 ) )
#define portSCB_SYS_HANDLER_CTRL_STATE_REG ( *( ( volatile uint32_t * ) 0xe000ed24 ) )
#define portSCB_MEM_FAULT_ENABLE_BIT ( 1UL << 16UL )
/*-----------------------------------------------------------*/
/**
* @brief Constants used to check the installation of the FreeRTOS interrupt handlers.
*/
#define portVECTOR_INDEX_SVC ( 11 )
#define portVECTOR_INDEX_PENDSV ( 14 )
/*-----------------------------------------------------------*/
/**
* @brief Constants required to check the validity of an interrupt priority.
*/
@ -1598,9 +1612,42 @@ void vPortSVCHandler_C( uint32_t * pulCallerStackAddress ) /* PRIVILEGED_FUNCTIO
BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
{
/* An application can install FreeRTOS interrupt handlers in one of the
* folllowing ways:
* 1. Direct Routing - Install the functions SVC_Handler and PendSV_Handler
* for SVCall and PendSV interrupts respectively.
* 2. Indirect Routing - Install separate handlers for SVCall and PendSV
* interrupts and route program control from those handlers to
* SVC_Handler and PendSV_Handler functions.
*
* Applications that use Indirect Routing must set
* configCHECK_HANDLER_INSTALLATION to 0 in their FreeRTOSConfig.h. Direct
* routing, which is validated here when configCHECK_HANDLER_INSTALLATION
* is 1, should be preferred when possible. */
#if ( configCHECK_HANDLER_INSTALLATION == 1 )
{
const portISR_t * const pxVectorTable = portSCB_VTOR_REG;
/* Validate that the application has correctly installed the FreeRTOS
* handlers for SVCall and PendSV interrupts. We do not check the
* installation of the SysTick handler because the application may
* choose to drive the RTOS tick using a timer other than the SysTick
* timer by overriding the weak function vPortSetupTimerInterrupt().
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
* VTOR is not set correctly to point to the application's vector table. */
configASSERT( pxVectorTable[ portVECTOR_INDEX_SVC ] == SVC_Handler );
configASSERT( pxVectorTable[ portVECTOR_INDEX_PENDSV ] == PendSV_Handler );
}
#endif /* configCHECK_HANDLER_INSTALLATION */
#if ( ( configASSERT_DEFINED == 1 ) && ( portHAS_ARMV8M_MAIN_EXTENSION == 1 ) )
{
volatile uint32_t ulOriginalPriority;
volatile uint32_t ulImplementedPrioBits = 0;
volatile uint8_t ucMaxPriorityValue;
@ -1609,11 +1656,8 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
* "FromISR". FreeRTOS maintains separate thread and ISR API functions to
* ensure interrupt entry is as fast and simple as possible.
*
* Save the interrupt priority value that is about to be clobbered. */
ulOriginalPriority = portNVIC_SHPR2_REG;
/* Determine the number of priority bits available. First write to all
* possible bits. */
* First, determine the number of priority bits available. Write to all
* possible bits in the priority setting for SVCall. */
portNVIC_SHPR2_REG = 0xFF000000;
/* Read the value back to see how many bits stuck. */
@ -1636,7 +1680,6 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
/* Calculate the maximum acceptable priority group value for the number
* of bits read back. */
while( ( ucMaxPriorityValue & portTOP_BIT_OF_BYTE ) == portTOP_BIT_OF_BYTE )
{
ulImplementedPrioBits++;
@ -1674,16 +1717,14 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
* register. */
ulMaxPRIGROUPValue <<= portPRIGROUP_SHIFT;
ulMaxPRIGROUPValue &= portPRIORITY_GROUP_MASK;
/* Restore the clobbered interrupt priority register to its original
* value. */
portNVIC_SHPR2_REG = ulOriginalPriority;
}
#endif /* #if ( ( configASSERT_DEFINED == 1 ) && ( portHAS_ARMV8M_MAIN_EXTENSION == 1 ) ) */
/* Make PendSV, CallSV and SysTick the same priority as the kernel. */
/* Make PendSV and SysTick the lowest priority interrupts, and make SVCall
* the highest priority. */
portNVIC_SHPR3_REG |= portNVIC_PENDSV_PRI;
portNVIC_SHPR3_REG |= portNVIC_SYSTICK_PRI;
portNVIC_SHPR2_REG = 0;
#if ( configENABLE_MPU == 1 )
{

47
portable/GCC/ARM_CM7/r0p1/port.c
Unescape Escape View File

@ -38,10 +38,14 @@
#error This port can only be used when the project options are configured to enable hardware floating point support.
#endif
/* Prototype of all Interrupt Service Routines (ISRs). */
typedef void ( * portISR_t )( void );
/* Constants required to manipulate the core. Registers first... */
#define portNVIC_SYSTICK_CTRL_REG ( *( ( volatile uint32_t * ) 0xe000e010 ) )
#define portNVIC_SYSTICK_LOAD_REG ( *( ( volatile uint32_t * ) 0xe000e014 ) )
#define portNVIC_SYSTICK_CURRENT_VALUE_REG ( *( ( volatile uint32_t * ) 0xe000e018 ) )
#define portNVIC_SHPR2_REG ( *( ( volatile uint32_t * ) 0xe000ed1c ) )
#define portNVIC_SHPR3_REG ( *( ( volatile uint32_t * ) 0xe000ed20 ) )
/* ...then bits in the registers. */
#define portNVIC_SYSTICK_CLK_BIT ( 1UL << 2UL )
@ -56,6 +60,11 @@
#define portNVIC_PENDSV_PRI ( ( ( uint32_t ) portMIN_INTERRUPT_PRIORITY ) << 16UL )
#define portNVIC_SYSTICK_PRI ( ( ( uint32_t ) portMIN_INTERRUPT_PRIORITY ) << 24UL )
/* Constants used to check the installation of the FreeRTOS interrupt handlers. */
#define portSCB_VTOR_REG ( *( ( portISR_t ** ) 0xE000ED08 ) )
#define portVECTOR_INDEX_SVC ( 11 )
#define portVECTOR_INDEX_PENDSV ( 14 )
/* Constants required to check the validity of an interrupt priority. */
#define portFIRST_USER_INTERRUPT_NUMBER ( 16 )
#define portNVIC_IP_REGISTERS_OFFSET_16 ( 0xE000E3F0 )
@ -290,6 +299,40 @@ static void prvPortStartFirstTask( void )
*/
BaseType_t xPortStartScheduler( void )
{
/* An application can install FreeRTOS interrupt handlers in one of the
* folllowing ways:
* 1. Direct Routing - Install the functions vPortSVCHandler and
* xPortPendSVHandler for SVCall and PendSV interrupts respectively.
* 2. Indirect Routing - Install separate handlers for SVCall and PendSV
* interrupts and route program control from those handlers to
* vPortSVCHandler and xPortPendSVHandler functions.
*
* Applications that use Indirect Routing must set
* configCHECK_HANDLER_INSTALLATION to 0 in their FreeRTOSConfig.h. Direct
* routing, which is validated here when configCHECK_HANDLER_INSTALLATION
* is 1, should be preferred when possible. */
#if ( configCHECK_HANDLER_INSTALLATION == 1 )
{
const portISR_t * const pxVectorTable = portSCB_VTOR_REG;
/* Validate that the application has correctly installed the FreeRTOS
* handlers for SVCall and PendSV interrupts. We do not check the
* installation of the SysTick handler because the application may
* choose to drive the RTOS tick using a timer other than the SysTick
* timer by overriding the weak function vPortSetupTimerInterrupt().
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
* VTOR is not set correctly to point to the application's vector table. */
configASSERT( pxVectorTable[ portVECTOR_INDEX_SVC ] == vPortSVCHandler );
configASSERT( pxVectorTable[ portVECTOR_INDEX_PENDSV ] == xPortPendSVHandler );
}
#endif /* configCHECK_HANDLER_INSTALLATION */
#if ( configASSERT_DEFINED == 1 )
{
volatile uint8_t ucOriginalPriority;
@ -374,9 +417,11 @@ BaseType_t xPortStartScheduler( void )
}
#endif /* configASSERT_DEFINED */
/* Make PendSV and SysTick the lowest priority interrupts. */
/* Make PendSV and SysTick the lowest priority interrupts, and make SVCall
* the highest priority. */
portNVIC_SHPR3_REG |= portNVIC_PENDSV_PRI;
portNVIC_SHPR3_REG |= portNVIC_SYSTICK_PRI;
portNVIC_SHPR2_REG = 0;
/* Start the timer that generates the tick ISR. Interrupts are disabled
* here already. */

67
portable/GCC/ARM_CM85/non_secure/port.c
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@ -80,6 +80,12 @@
#endif
/*-----------------------------------------------------------*/
/**
* @brief Prototype of all Interrupt Service Routines (ISRs).
*/
typedef void ( * portISR_t )( void );
/*-----------------------------------------------------------*/
/**
* @brief Constants required to manipulate the NVIC.
*/
@ -101,10 +107,18 @@
/**
* @brief Constants required to manipulate the SCB.
*/
#define portSCB_SYS_HANDLER_CTRL_STATE_REG ( *( volatile uint32_t * ) 0xe000ed24 )
#define portSCB_VTOR_REG ( *( ( portISR_t ** ) 0xe000ed08 ) )
#define portSCB_SYS_HANDLER_CTRL_STATE_REG ( *( ( volatile uint32_t * ) 0xe000ed24 ) )
#define portSCB_MEM_FAULT_ENABLE_BIT ( 1UL << 16UL )
/*-----------------------------------------------------------*/
/**
* @brief Constants used to check the installation of the FreeRTOS interrupt handlers.
*/
#define portVECTOR_INDEX_SVC ( 11 )
#define portVECTOR_INDEX_PENDSV ( 14 )
/*-----------------------------------------------------------*/
/**
* @brief Constants required to check the validity of an interrupt priority.
*/
@ -1598,9 +1612,42 @@ void vPortSVCHandler_C( uint32_t * pulCallerStackAddress ) /* PRIVILEGED_FUNCTIO
BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
{
/* An application can install FreeRTOS interrupt handlers in one of the
* folllowing ways:
* 1. Direct Routing - Install the functions SVC_Handler and PendSV_Handler
* for SVCall and PendSV interrupts respectively.
* 2. Indirect Routing - Install separate handlers for SVCall and PendSV
* interrupts and route program control from those handlers to
* SVC_Handler and PendSV_Handler functions.
*
* Applications that use Indirect Routing must set
* configCHECK_HANDLER_INSTALLATION to 0 in their FreeRTOSConfig.h. Direct
* routing, which is validated here when configCHECK_HANDLER_INSTALLATION
* is 1, should be preferred when possible. */
#if ( configCHECK_HANDLER_INSTALLATION == 1 )
{
const portISR_t * const pxVectorTable = portSCB_VTOR_REG;
/* Validate that the application has correctly installed the FreeRTOS
* handlers for SVCall and PendSV interrupts. We do not check the
* installation of the SysTick handler because the application may
* choose to drive the RTOS tick using a timer other than the SysTick
* timer by overriding the weak function vPortSetupTimerInterrupt().
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
* VTOR is not set correctly to point to the application's vector table. */
configASSERT( pxVectorTable[ portVECTOR_INDEX_SVC ] == SVC_Handler );
configASSERT( pxVectorTable[ portVECTOR_INDEX_PENDSV ] == PendSV_Handler );
}
#endif /* configCHECK_HANDLER_INSTALLATION */
#if ( ( configASSERT_DEFINED == 1 ) && ( portHAS_ARMV8M_MAIN_EXTENSION == 1 ) )
{
volatile uint32_t ulOriginalPriority;
volatile uint32_t ulImplementedPrioBits = 0;
volatile uint8_t ucMaxPriorityValue;
@ -1609,11 +1656,8 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
* "FromISR". FreeRTOS maintains separate thread and ISR API functions to
* ensure interrupt entry is as fast and simple as possible.
*
* Save the interrupt priority value that is about to be clobbered. */
ulOriginalPriority = portNVIC_SHPR2_REG;
/* Determine the number of priority bits available. First write to all
* possible bits. */
* First, determine the number of priority bits available. Write to all
* possible bits in the priority setting for SVCall. */
portNVIC_SHPR2_REG = 0xFF000000;
/* Read the value back to see how many bits stuck. */
@ -1636,7 +1680,6 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
/* Calculate the maximum acceptable priority group value for the number
* of bits read back. */
while( ( ucMaxPriorityValue & portTOP_BIT_OF_BYTE ) == portTOP_BIT_OF_BYTE )
{
ulImplementedPrioBits++;
@ -1674,16 +1717,14 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
* register. */
ulMaxPRIGROUPValue <<= portPRIGROUP_SHIFT;
ulMaxPRIGROUPValue &= portPRIORITY_GROUP_MASK;
/* Restore the clobbered interrupt priority register to its original
* value. */
portNVIC_SHPR2_REG = ulOriginalPriority;
}
#endif /* #if ( ( configASSERT_DEFINED == 1 ) && ( portHAS_ARMV8M_MAIN_EXTENSION == 1 ) ) */
/* Make PendSV, CallSV and SysTick the same priority as the kernel. */
/* Make PendSV and SysTick the lowest priority interrupts, and make SVCall
* the highest priority. */
portNVIC_SHPR3_REG |= portNVIC_PENDSV_PRI;
portNVIC_SHPR3_REG |= portNVIC_SYSTICK_PRI;
portNVIC_SHPR2_REG = 0;
#if ( configENABLE_MPU == 1 )
{

67
portable/GCC/ARM_CM85_NTZ/non_secure/port.c
Unescape Escape View File

@ -80,6 +80,12 @@
#endif
/*-----------------------------------------------------------*/
/**
* @brief Prototype of all Interrupt Service Routines (ISRs).
*/
typedef void ( * portISR_t )( void );
/*-----------------------------------------------------------*/
/**
* @brief Constants required to manipulate the NVIC.
*/
@ -101,10 +107,18 @@
/**
* @brief Constants required to manipulate the SCB.
*/
#define portSCB_SYS_HANDLER_CTRL_STATE_REG ( *( volatile uint32_t * ) 0xe000ed24 )
#define portSCB_VTOR_REG ( *( ( portISR_t ** ) 0xe000ed08 ) )
#define portSCB_SYS_HANDLER_CTRL_STATE_REG ( *( ( volatile uint32_t * ) 0xe000ed24 ) )
#define portSCB_MEM_FAULT_ENABLE_BIT ( 1UL << 16UL )
/*-----------------------------------------------------------*/
/**
* @brief Constants used to check the installation of the FreeRTOS interrupt handlers.
*/
#define portVECTOR_INDEX_SVC ( 11 )
#define portVECTOR_INDEX_PENDSV ( 14 )
/*-----------------------------------------------------------*/
/**
* @brief Constants required to check the validity of an interrupt priority.
*/
@ -1598,9 +1612,42 @@ void vPortSVCHandler_C( uint32_t * pulCallerStackAddress ) /* PRIVILEGED_FUNCTIO
BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
{
/* An application can install FreeRTOS interrupt handlers in one of the
* folllowing ways:
* 1. Direct Routing - Install the functions SVC_Handler and PendSV_Handler
* for SVCall and PendSV interrupts respectively.
* 2. Indirect Routing - Install separate handlers for SVCall and PendSV
* interrupts and route program control from those handlers to
* SVC_Handler and PendSV_Handler functions.
*
* Applications that use Indirect Routing must set
* configCHECK_HANDLER_INSTALLATION to 0 in their FreeRTOSConfig.h. Direct
* routing, which is validated here when configCHECK_HANDLER_INSTALLATION
* is 1, should be preferred when possible. */
#if ( configCHECK_HANDLER_INSTALLATION == 1 )
{
const portISR_t * const pxVectorTable = portSCB_VTOR_REG;
/* Validate that the application has correctly installed the FreeRTOS
* handlers for SVCall and PendSV interrupts. We do not check the
* installation of the SysTick handler because the application may
* choose to drive the RTOS tick using a timer other than the SysTick
* timer by overriding the weak function vPortSetupTimerInterrupt().
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
* VTOR is not set correctly to point to the application's vector table. */
configASSERT( pxVectorTable[ portVECTOR_INDEX_SVC ] == SVC_Handler );
configASSERT( pxVectorTable[ portVECTOR_INDEX_PENDSV ] == PendSV_Handler );
}
#endif /* configCHECK_HANDLER_INSTALLATION */
#if ( ( configASSERT_DEFINED == 1 ) && ( portHAS_ARMV8M_MAIN_EXTENSION == 1 ) )
{
volatile uint32_t ulOriginalPriority;
volatile uint32_t ulImplementedPrioBits = 0;
volatile uint8_t ucMaxPriorityValue;
@ -1609,11 +1656,8 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
* "FromISR". FreeRTOS maintains separate thread and ISR API functions to
* ensure interrupt entry is as fast and simple as possible.
*
* Save the interrupt priority value that is about to be clobbered. */
ulOriginalPriority = portNVIC_SHPR2_REG;
/* Determine the number of priority bits available. First write to all
* possible bits. */
* First, determine the number of priority bits available. Write to all
* possible bits in the priority setting for SVCall. */
portNVIC_SHPR2_REG = 0xFF000000;
/* Read the value back to see how many bits stuck. */
@ -1636,7 +1680,6 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
/* Calculate the maximum acceptable priority group value for the number
* of bits read back. */
while( ( ucMaxPriorityValue & portTOP_BIT_OF_BYTE ) == portTOP_BIT_OF_BYTE )
{
ulImplementedPrioBits++;
@ -1674,16 +1717,14 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
* register. */
ulMaxPRIGROUPValue <<= portPRIGROUP_SHIFT;
ulMaxPRIGROUPValue &= portPRIORITY_GROUP_MASK;
/* Restore the clobbered interrupt priority register to its original
* value. */
portNVIC_SHPR2_REG = ulOriginalPriority;
}
#endif /* #if ( ( configASSERT_DEFINED == 1 ) && ( portHAS_ARMV8M_MAIN_EXTENSION == 1 ) ) */
/* Make PendSV, CallSV and SysTick the same priority as the kernel. */
/* Make PendSV and SysTick the lowest priority interrupts, and make SVCall
* the highest priority. */
portNVIC_SHPR3_REG |= portNVIC_PENDSV_PRI;
portNVIC_SHPR3_REG |= portNVIC_SYSTICK_PRI;
portNVIC_SHPR2_REG = 0;
#if ( configENABLE_MPU == 1 )
{

46
portable/IAR/ARM_CM0/port.c
Unescape Escape View File

@ -37,6 +37,9 @@
#include "FreeRTOS.h"
#include "task.h"
/* Prototype of all Interrupt Service Routines (ISRs). */
typedef void ( * portISR_t )( void );
/* Constants required to manipulate the NVIC. */
#define portNVIC_SYSTICK_CTRL_REG ( *( ( volatile uint32_t * ) 0xe000e010 ) )
#define portNVIC_SYSTICK_LOAD_REG ( *( ( volatile uint32_t * ) 0xe000e014 ) )
@ -53,6 +56,10 @@
#define portNVIC_PENDSV_PRI ( portMIN_INTERRUPT_PRIORITY << 16UL )
#define portNVIC_SYSTICK_PRI ( portMIN_INTERRUPT_PRIORITY << 24UL )
/* Constants used to check the installation of the FreeRTOS interrupt handlers. */
#define portSCB_VTOR_REG ( *( ( portISR_t ** ) 0xe000ed08 ) )
#define portVECTOR_INDEX_PENDSV ( 14 )
/* Constants required to set up the initial stack. */
#define portINITIAL_XPSR ( 0x01000000 )
@ -121,6 +128,10 @@ extern void vPortStartFirstTask( void );
*/
static void prvTaskExitError( void );
/*
* FreeRTOS handlers implemented in assembly.
*/
extern void xPortPendSVHandler( void );
/*-----------------------------------------------------------*/
/*
@ -168,6 +179,41 @@ static void prvTaskExitError( void )
*/
BaseType_t xPortStartScheduler( void )
{
/* An application can install FreeRTOS interrupt handlers in one of the
* folllowing ways:
* 1. Direct Routing - Install the function xPortPendSVHandler for PendSV
* interrupt.
* 2. Indirect Routing - Install separate handler for PendSV interrupt and
* route program control from that handler to xPortPendSVHandler function.
*
* Applications that use Indirect Routing must set
* configCHECK_HANDLER_INSTALLATION to 0 in their FreeRTOSConfig.h. Direct
* routing, which is validated here when configCHECK_HANDLER_INSTALLATION
* is 1, should be preferred when possible. */
#if ( configCHECK_HANDLER_INSTALLATION == 1 )
{
/* Point pxVectorTable to the interrupt vector table. Systems without
* a VTOR register provide the value zero in the VTOR register and
* the vector table itself is located at the address 0x00000000. */
const portISR_t * const pxVectorTable = portSCB_VTOR_REG;
/* Validate that the application has correctly installed the FreeRTOS
* handler for PendSV interrupt. We do not check the installation of the
* SysTick handler because the application may choose to drive the RTOS
* tick using a timer other than the SysTick timer by overriding the
* weak function vPortSetupTimerInterrupt().
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handler. For help installing the FreeRTOS handler, see
* https://www.FreeRTOS.org/FAQHelp.html.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
* VTOR is not set correctly to point to the application's vector table. */
configASSERT( pxVectorTable[ portVECTOR_INDEX_PENDSV ] == xPortPendSVHandler );
}
#endif /* configCHECK_HANDLER_INSTALLATION */
/* Make PendSV and SysTick the lowest priority interrupts. */
portNVIC_SHPR3_REG |= portNVIC_PENDSV_PRI;
portNVIC_SHPR3_REG |= portNVIC_SYSTICK_PRI;

8
portable/IAR/ARM_CM0/portasm.s
Unescape Escape View File

@ -91,15 +91,15 @@ xPortPendSVHandler:
vPortSVCHandler;
/* This function is no longer used, but retained for backward
compatibility. */
* compatibility. */
bx lr
/*-----------------------------------------------------------*/
vPortStartFirstTask
/* The MSP stack is not reset as, unlike on M3/4 parts, there is no vector
table offset register that can be used to locate the initial stack value.
Not all M0 parts have the application vector table at address 0. */
/* Don't reset the MSP stack as is done on CM3/4 devices. The vector table
* in some CM0 devices cannot be modified and thus may not hold the
* application's initial MSP value. */
ldr r3, =pxCurrentTCB /* Obtain location of pxCurrentTCB. */
ldr r1, [r3]

67
portable/IAR/ARM_CM23/non_secure/port.c
Unescape Escape View File

@ -80,6 +80,12 @@
#endif
/*-----------------------------------------------------------*/
/**
* @brief Prototype of all Interrupt Service Routines (ISRs).
*/
typedef void ( * portISR_t )( void );
/*-----------------------------------------------------------*/
/**
* @brief Constants required to manipulate the NVIC.
*/
@ -101,10 +107,18 @@
/**
* @brief Constants required to manipulate the SCB.
*/
#define portSCB_SYS_HANDLER_CTRL_STATE_REG ( *( volatile uint32_t * ) 0xe000ed24 )
#define portSCB_VTOR_REG ( *( ( portISR_t ** ) 0xe000ed08 ) )
#define portSCB_SYS_HANDLER_CTRL_STATE_REG ( *( ( volatile uint32_t * ) 0xe000ed24 ) )
#define portSCB_MEM_FAULT_ENABLE_BIT ( 1UL << 16UL )
/*-----------------------------------------------------------*/
/**
* @brief Constants used to check the installation of the FreeRTOS interrupt handlers.
*/
#define portVECTOR_INDEX_SVC ( 11 )
#define portVECTOR_INDEX_PENDSV ( 14 )
/*-----------------------------------------------------------*/
/**
* @brief Constants required to check the validity of an interrupt priority.
*/
@ -1598,9 +1612,42 @@ void vPortSVCHandler_C( uint32_t * pulCallerStackAddress ) /* PRIVILEGED_FUNCTIO
BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
{
/* An application can install FreeRTOS interrupt handlers in one of the
* folllowing ways:
* 1. Direct Routing - Install the functions SVC_Handler and PendSV_Handler
* for SVCall and PendSV interrupts respectively.
* 2. Indirect Routing - Install separate handlers for SVCall and PendSV
* interrupts and route program control from those handlers to
* SVC_Handler and PendSV_Handler functions.
*
* Applications that use Indirect Routing must set
* configCHECK_HANDLER_INSTALLATION to 0 in their FreeRTOSConfig.h. Direct
* routing, which is validated here when configCHECK_HANDLER_INSTALLATION
* is 1, should be preferred when possible. */
#if ( configCHECK_HANDLER_INSTALLATION == 1 )
{
const portISR_t * const pxVectorTable = portSCB_VTOR_REG;
/* Validate that the application has correctly installed the FreeRTOS
* handlers for SVCall and PendSV interrupts. We do not check the
* installation of the SysTick handler because the application may
* choose to drive the RTOS tick using a timer other than the SysTick
* timer by overriding the weak function vPortSetupTimerInterrupt().
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
* VTOR is not set correctly to point to the application's vector table. */
configASSERT( pxVectorTable[ portVECTOR_INDEX_SVC ] == SVC_Handler );
configASSERT( pxVectorTable[ portVECTOR_INDEX_PENDSV ] == PendSV_Handler );
}
#endif /* configCHECK_HANDLER_INSTALLATION */
#if ( ( configASSERT_DEFINED == 1 ) && ( portHAS_ARMV8M_MAIN_EXTENSION == 1 ) )
{
volatile uint32_t ulOriginalPriority;
volatile uint32_t ulImplementedPrioBits = 0;
volatile uint8_t ucMaxPriorityValue;
@ -1609,11 +1656,8 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
* "FromISR". FreeRTOS maintains separate thread and ISR API functions to
* ensure interrupt entry is as fast and simple as possible.
*
* Save the interrupt priority value that is about to be clobbered. */
ulOriginalPriority = portNVIC_SHPR2_REG;
/* Determine the number of priority bits available. First write to all
* possible bits. */
* First, determine the number of priority bits available. Write to all
* possible bits in the priority setting for SVCall. */
portNVIC_SHPR2_REG = 0xFF000000;
/* Read the value back to see how many bits stuck. */
@ -1636,7 +1680,6 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
/* Calculate the maximum acceptable priority group value for the number
* of bits read back. */
while( ( ucMaxPriorityValue & portTOP_BIT_OF_BYTE ) == portTOP_BIT_OF_BYTE )
{
ulImplementedPrioBits++;
@ -1674,16 +1717,14 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
* register. */
ulMaxPRIGROUPValue <<= portPRIGROUP_SHIFT;
ulMaxPRIGROUPValue &= portPRIORITY_GROUP_MASK;
/* Restore the clobbered interrupt priority register to its original
* value. */
portNVIC_SHPR2_REG = ulOriginalPriority;
}
#endif /* #if ( ( configASSERT_DEFINED == 1 ) && ( portHAS_ARMV8M_MAIN_EXTENSION == 1 ) ) */
/* Make PendSV, CallSV and SysTick the same priority as the kernel. */
/* Make PendSV and SysTick the lowest priority interrupts, and make SVCall
* the highest priority. */
portNVIC_SHPR3_REG |= portNVIC_PENDSV_PRI;
portNVIC_SHPR3_REG |= portNVIC_SYSTICK_PRI;
portNVIC_SHPR2_REG = 0;
#if ( configENABLE_MPU == 1 )
{

67
portable/IAR/ARM_CM23_NTZ/non_secure/port.c
Unescape Escape View File

@ -80,6 +80,12 @@
#endif
/*-----------------------------------------------------------*/
/**
* @brief Prototype of all Interrupt Service Routines (ISRs).
*/
typedef void ( * portISR_t )( void );
/*-----------------------------------------------------------*/
/**
* @brief Constants required to manipulate the NVIC.
*/
@ -101,10 +107,18 @@
/**
* @brief Constants required to manipulate the SCB.
*/
#define portSCB_SYS_HANDLER_CTRL_STATE_REG ( *( volatile uint32_t * ) 0xe000ed24 )
#define portSCB_VTOR_REG ( *( ( portISR_t ** ) 0xe000ed08 ) )
#define portSCB_SYS_HANDLER_CTRL_STATE_REG ( *( ( volatile uint32_t * ) 0xe000ed24 ) )
#define portSCB_MEM_FAULT_ENABLE_BIT ( 1UL << 16UL )
/*-----------------------------------------------------------*/
/**
* @brief Constants used to check the installation of the FreeRTOS interrupt handlers.
*/
#define portVECTOR_INDEX_SVC ( 11 )
#define portVECTOR_INDEX_PENDSV ( 14 )
/*-----------------------------------------------------------*/
/**
* @brief Constants required to check the validity of an interrupt priority.
*/
@ -1598,9 +1612,42 @@ void vPortSVCHandler_C( uint32_t * pulCallerStackAddress ) /* PRIVILEGED_FUNCTIO
BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
{
/* An application can install FreeRTOS interrupt handlers in one of the
* folllowing ways:
* 1. Direct Routing - Install the functions SVC_Handler and PendSV_Handler
* for SVCall and PendSV interrupts respectively.
* 2. Indirect Routing - Install separate handlers for SVCall and PendSV
* interrupts and route program control from those handlers to
* SVC_Handler and PendSV_Handler functions.
*
* Applications that use Indirect Routing must set
* configCHECK_HANDLER_INSTALLATION to 0 in their FreeRTOSConfig.h. Direct
* routing, which is validated here when configCHECK_HANDLER_INSTALLATION
* is 1, should be preferred when possible. */
#if ( configCHECK_HANDLER_INSTALLATION == 1 )
{
const portISR_t * const pxVectorTable = portSCB_VTOR_REG;
/* Validate that the application has correctly installed the FreeRTOS
* handlers for SVCall and PendSV interrupts. We do not check the
* installation of the SysTick handler because the application may
* choose to drive the RTOS tick using a timer other than the SysTick
* timer by overriding the weak function vPortSetupTimerInterrupt().
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
* VTOR is not set correctly to point to the application's vector table. */
configASSERT( pxVectorTable[ portVECTOR_INDEX_SVC ] == SVC_Handler );
configASSERT( pxVectorTable[ portVECTOR_INDEX_PENDSV ] == PendSV_Handler );
}
#endif /* configCHECK_HANDLER_INSTALLATION */
#if ( ( configASSERT_DEFINED == 1 ) && ( portHAS_ARMV8M_MAIN_EXTENSION == 1 ) )
{
volatile uint32_t ulOriginalPriority;
volatile uint32_t ulImplementedPrioBits = 0;
volatile uint8_t ucMaxPriorityValue;
@ -1609,11 +1656,8 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
* "FromISR". FreeRTOS maintains separate thread and ISR API functions to
* ensure interrupt entry is as fast and simple as possible.
*
* Save the interrupt priority value that is about to be clobbered. */
ulOriginalPriority = portNVIC_SHPR2_REG;
/* Determine the number of priority bits available. First write to all
* possible bits. */
* First, determine the number of priority bits available. Write to all
* possible bits in the priority setting for SVCall. */
portNVIC_SHPR2_REG = 0xFF000000;
/* Read the value back to see how many bits stuck. */
@ -1636,7 +1680,6 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
/* Calculate the maximum acceptable priority group value for the number
* of bits read back. */
while( ( ucMaxPriorityValue & portTOP_BIT_OF_BYTE ) == portTOP_BIT_OF_BYTE )
{
ulImplementedPrioBits++;
@ -1674,16 +1717,14 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
* register. */
ulMaxPRIGROUPValue <<= portPRIGROUP_SHIFT;
ulMaxPRIGROUPValue &= portPRIORITY_GROUP_MASK;
/* Restore the clobbered interrupt priority register to its original
* value. */
portNVIC_SHPR2_REG = ulOriginalPriority;
}
#endif /* #if ( ( configASSERT_DEFINED == 1 ) && ( portHAS_ARMV8M_MAIN_EXTENSION == 1 ) ) */
/* Make PendSV, CallSV and SysTick the same priority as the kernel. */
/* Make PendSV and SysTick the lowest priority interrupts, and make SVCall
* the highest priority. */
portNVIC_SHPR3_REG |= portNVIC_PENDSV_PRI;
portNVIC_SHPR3_REG |= portNVIC_SYSTICK_PRI;
portNVIC_SHPR2_REG = 0;
#if ( configENABLE_MPU == 1 )
{

52
portable/IAR/ARM_CM3/port.c
Unescape Escape View File

@ -41,10 +41,14 @@
#error configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to 0. See http: /*www.FreeRTOS.org/RTOS-Cortex-M3-M4.html */
#endif
/* Prototype of all Interrupt Service Routines (ISRs). */
typedef void ( * portISR_t )( void );
/* Constants required to manipulate the core. Registers first... */
#define portNVIC_SYSTICK_CTRL_REG ( *( ( volatile uint32_t * ) 0xe000e010 ) )
#define portNVIC_SYSTICK_LOAD_REG ( *( ( volatile uint32_t * ) 0xe000e014 ) )
#define portNVIC_SYSTICK_CURRENT_VALUE_REG ( *( ( volatile uint32_t * ) 0xe000e018 ) )
#define portNVIC_SHPR2_REG ( *( ( volatile uint32_t * ) 0xe000ed1c ) )
#define portNVIC_SHPR3_REG ( *( ( volatile uint32_t * ) 0xe000ed20 ) )
/* ...then bits in the registers. */
#define portNVIC_SYSTICK_CLK_BIT ( 1UL << 2UL )
@ -59,6 +63,11 @@
#define portNVIC_PENDSV_PRI ( ( ( uint32_t ) portMIN_INTERRUPT_PRIORITY ) << 16UL )
#define portNVIC_SYSTICK_PRI ( ( ( uint32_t ) portMIN_INTERRUPT_PRIORITY ) << 24UL )
/* Constants used to check the installation of the FreeRTOS interrupt handlers. */
#define portSCB_VTOR_REG ( *( ( portISR_t ** ) 0xE000ED08 ) )
#define portVECTOR_INDEX_SVC ( 11 )
#define portVECTOR_INDEX_PENDSV ( 14 )
/* Constants required to check the validity of an interrupt priority. */
#define portFIRST_USER_INTERRUPT_NUMBER ( 16 )
#define portNVIC_IP_REGISTERS_OFFSET_16 ( 0xE000E3F0 )
@ -121,6 +130,11 @@ extern void vPortStartFirstTask( void );
*/
static void prvTaskExitError( void );
/*
* FreeRTOS handlers implemented in assembly.
*/
extern void vPortSVCHandler( void );
extern void xPortPendSVHandler( void );
/*-----------------------------------------------------------*/
/* Each task maintains its own interrupt status in the critical nesting
@ -208,6 +222,40 @@ static void prvTaskExitError( void )
*/
BaseType_t xPortStartScheduler( void )
{
/* An application can install FreeRTOS interrupt handlers in one of the
* folllowing ways:
* 1. Direct Routing - Install the functions vPortSVCHandler and
* xPortPendSVHandler for SVCall and PendSV interrupts respectively.
* 2. Indirect Routing - Install separate handlers for SVCall and PendSV
* interrupts and route program control from those handlers to
* vPortSVCHandler and xPortPendSVHandler functions.
*
* Applications that use Indirect Routing must set
* configCHECK_HANDLER_INSTALLATION to 0 in their FreeRTOSConfig.h. Direct
* routing, which is validated here when configCHECK_HANDLER_INSTALLATION
* is 1, should be preferred when possible. */
#if ( configCHECK_HANDLER_INSTALLATION == 1 )
{
const portISR_t * const pxVectorTable = portSCB_VTOR_REG;
/* Validate that the application has correctly installed the FreeRTOS
* handlers for SVCall and PendSV interrupts. We do not check the
* installation of the SysTick handler because the application may
* choose to drive the RTOS tick using a timer other than the SysTick
* timer by overriding the weak function vPortSetupTimerInterrupt().
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
* VTOR is not set correctly to point to the application's vector table. */
configASSERT( pxVectorTable[ portVECTOR_INDEX_SVC ] == vPortSVCHandler );
configASSERT( pxVectorTable[ portVECTOR_INDEX_PENDSV ] == xPortPendSVHandler );
}
#endif /* configCHECK_HANDLER_INSTALLATION */
#if ( configASSERT_DEFINED == 1 )
{
volatile uint8_t ucOriginalPriority;
@ -292,9 +340,11 @@ BaseType_t xPortStartScheduler( void )
}
#endif /* configASSERT_DEFINED */
/* Make PendSV and SysTick the lowest priority interrupts. */
/* Make PendSV and SysTick the lowest priority interrupts, and make SVCall
* the highest priority. */
portNVIC_SHPR3_REG |= portNVIC_PENDSV_PRI;
portNVIC_SHPR3_REG |= portNVIC_SYSTICK_PRI;
portNVIC_SHPR2_REG = 0;
/* Start the timer that generates the tick ISR. Interrupts are disabled
* here already. */

67
portable/IAR/ARM_CM33/non_secure/port.c
Unescape Escape View File

@ -80,6 +80,12 @@
#endif
/*-----------------------------------------------------------*/
/**
* @brief Prototype of all Interrupt Service Routines (ISRs).
*/
typedef void ( * portISR_t )( void );
/*-----------------------------------------------------------*/
/**
* @brief Constants required to manipulate the NVIC.
*/
@ -101,10 +107,18 @@
/**
* @brief Constants required to manipulate the SCB.
*/
#define portSCB_SYS_HANDLER_CTRL_STATE_REG ( *( volatile uint32_t * ) 0xe000ed24 )
#define portSCB_VTOR_REG ( *( ( portISR_t ** ) 0xe000ed08 ) )
#define portSCB_SYS_HANDLER_CTRL_STATE_REG ( *( ( volatile uint32_t * ) 0xe000ed24 ) )
#define portSCB_MEM_FAULT_ENABLE_BIT ( 1UL << 16UL )
/*-----------------------------------------------------------*/
/**
* @brief Constants used to check the installation of the FreeRTOS interrupt handlers.
*/
#define portVECTOR_INDEX_SVC ( 11 )
#define portVECTOR_INDEX_PENDSV ( 14 )
/*-----------------------------------------------------------*/
/**
* @brief Constants required to check the validity of an interrupt priority.
*/
@ -1598,9 +1612,42 @@ void vPortSVCHandler_C( uint32_t * pulCallerStackAddress ) /* PRIVILEGED_FUNCTIO
BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
{
/* An application can install FreeRTOS interrupt handlers in one of the
* folllowing ways:
* 1. Direct Routing - Install the functions SVC_Handler and PendSV_Handler
* for SVCall and PendSV interrupts respectively.
* 2. Indirect Routing - Install separate handlers for SVCall and PendSV
* interrupts and route program control from those handlers to
* SVC_Handler and PendSV_Handler functions.
*
* Applications that use Indirect Routing must set
* configCHECK_HANDLER_INSTALLATION to 0 in their FreeRTOSConfig.h. Direct
* routing, which is validated here when configCHECK_HANDLER_INSTALLATION
* is 1, should be preferred when possible. */
#if ( configCHECK_HANDLER_INSTALLATION == 1 )
{
const portISR_t * const pxVectorTable = portSCB_VTOR_REG;
/* Validate that the application has correctly installed the FreeRTOS
* handlers for SVCall and PendSV interrupts. We do not check the
* installation of the SysTick handler because the application may
* choose to drive the RTOS tick using a timer other than the SysTick
* timer by overriding the weak function vPortSetupTimerInterrupt().
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
* VTOR is not set correctly to point to the application's vector table. */
configASSERT( pxVectorTable[ portVECTOR_INDEX_SVC ] == SVC_Handler );
configASSERT( pxVectorTable[ portVECTOR_INDEX_PENDSV ] == PendSV_Handler );
}
#endif /* configCHECK_HANDLER_INSTALLATION */
#if ( ( configASSERT_DEFINED == 1 ) && ( portHAS_ARMV8M_MAIN_EXTENSION == 1 ) )
{
volatile uint32_t ulOriginalPriority;
volatile uint32_t ulImplementedPrioBits = 0;
volatile uint8_t ucMaxPriorityValue;
@ -1609,11 +1656,8 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
* "FromISR". FreeRTOS maintains separate thread and ISR API functions to
* ensure interrupt entry is as fast and simple as possible.
*
* Save the interrupt priority value that is about to be clobbered. */
ulOriginalPriority = portNVIC_SHPR2_REG;
/* Determine the number of priority bits available. First write to all
* possible bits. */
* First, determine the number of priority bits available. Write to all
* possible bits in the priority setting for SVCall. */
portNVIC_SHPR2_REG = 0xFF000000;
/* Read the value back to see how many bits stuck. */
@ -1636,7 +1680,6 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
/* Calculate the maximum acceptable priority group value for the number
* of bits read back. */
while( ( ucMaxPriorityValue & portTOP_BIT_OF_BYTE ) == portTOP_BIT_OF_BYTE )
{
ulImplementedPrioBits++;
@ -1674,16 +1717,14 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
* register. */
ulMaxPRIGROUPValue <<= portPRIGROUP_SHIFT;
ulMaxPRIGROUPValue &= portPRIORITY_GROUP_MASK;
/* Restore the clobbered interrupt priority register to its original
* value. */
portNVIC_SHPR2_REG = ulOriginalPriority;
}
#endif /* #if ( ( configASSERT_DEFINED == 1 ) && ( portHAS_ARMV8M_MAIN_EXTENSION == 1 ) ) */
/* Make PendSV, CallSV and SysTick the same priority as the kernel. */
/* Make PendSV and SysTick the lowest priority interrupts, and make SVCall
* the highest priority. */
portNVIC_SHPR3_REG |= portNVIC_PENDSV_PRI;
portNVIC_SHPR3_REG |= portNVIC_SYSTICK_PRI;
portNVIC_SHPR2_REG = 0;
#if ( configENABLE_MPU == 1 )
{

67
portable/IAR/ARM_CM33_NTZ/non_secure/port.c
Unescape Escape View File

@ -80,6 +80,12 @@
#endif
/*-----------------------------------------------------------*/
/**
* @brief Prototype of all Interrupt Service Routines (ISRs).
*/
typedef void ( * portISR_t )( void );
/*-----------------------------------------------------------*/
/**
* @brief Constants required to manipulate the NVIC.
*/
@ -101,10 +107,18 @@
/**
* @brief Constants required to manipulate the SCB.
*/
#define portSCB_SYS_HANDLER_CTRL_STATE_REG ( *( volatile uint32_t * ) 0xe000ed24 )
#define portSCB_VTOR_REG ( *( ( portISR_t ** ) 0xe000ed08 ) )
#define portSCB_SYS_HANDLER_CTRL_STATE_REG ( *( ( volatile uint32_t * ) 0xe000ed24 ) )
#define portSCB_MEM_FAULT_ENABLE_BIT ( 1UL << 16UL )
/*-----------------------------------------------------------*/
/**
* @brief Constants used to check the installation of the FreeRTOS interrupt handlers.
*/
#define portVECTOR_INDEX_SVC ( 11 )
#define portVECTOR_INDEX_PENDSV ( 14 )
/*-----------------------------------------------------------*/
/**
* @brief Constants required to check the validity of an interrupt priority.
*/
@ -1598,9 +1612,42 @@ void vPortSVCHandler_C( uint32_t * pulCallerStackAddress ) /* PRIVILEGED_FUNCTIO
BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
{
/* An application can install FreeRTOS interrupt handlers in one of the
* folllowing ways:
* 1. Direct Routing - Install the functions SVC_Handler and PendSV_Handler
* for SVCall and PendSV interrupts respectively.
* 2. Indirect Routing - Install separate handlers for SVCall and PendSV
* interrupts and route program control from those handlers to
* SVC_Handler and PendSV_Handler functions.
*
* Applications that use Indirect Routing must set
* configCHECK_HANDLER_INSTALLATION to 0 in their FreeRTOSConfig.h. Direct
* routing, which is validated here when configCHECK_HANDLER_INSTALLATION
* is 1, should be preferred when possible. */
#if ( configCHECK_HANDLER_INSTALLATION == 1 )
{
const portISR_t * const pxVectorTable = portSCB_VTOR_REG;
/* Validate that the application has correctly installed the FreeRTOS
* handlers for SVCall and PendSV interrupts. We do not check the
* installation of the SysTick handler because the application may
* choose to drive the RTOS tick using a timer other than the SysTick
* timer by overriding the weak function vPortSetupTimerInterrupt().
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
* VTOR is not set correctly to point to the application's vector table. */
configASSERT( pxVectorTable[ portVECTOR_INDEX_SVC ] == SVC_Handler );
configASSERT( pxVectorTable[ portVECTOR_INDEX_PENDSV ] == PendSV_Handler );
}
#endif /* configCHECK_HANDLER_INSTALLATION */
#if ( ( configASSERT_DEFINED == 1 ) && ( portHAS_ARMV8M_MAIN_EXTENSION == 1 ) )
{
volatile uint32_t ulOriginalPriority;
volatile uint32_t ulImplementedPrioBits = 0;
volatile uint8_t ucMaxPriorityValue;
@ -1609,11 +1656,8 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
* "FromISR". FreeRTOS maintains separate thread and ISR API functions to
* ensure interrupt entry is as fast and simple as possible.
*
* Save the interrupt priority value that is about to be clobbered. */
ulOriginalPriority = portNVIC_SHPR2_REG;
/* Determine the number of priority bits available. First write to all
* possible bits. */
* First, determine the number of priority bits available. Write to all
* possible bits in the priority setting for SVCall. */
portNVIC_SHPR2_REG = 0xFF000000;
/* Read the value back to see how many bits stuck. */
@ -1636,7 +1680,6 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
/* Calculate the maximum acceptable priority group value for the number
* of bits read back. */
while( ( ucMaxPriorityValue & portTOP_BIT_OF_BYTE ) == portTOP_BIT_OF_BYTE )
{
ulImplementedPrioBits++;
@ -1674,16 +1717,14 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
* register. */
ulMaxPRIGROUPValue <<= portPRIGROUP_SHIFT;
ulMaxPRIGROUPValue &= portPRIORITY_GROUP_MASK;
/* Restore the clobbered interrupt priority register to its original
* value. */
portNVIC_SHPR2_REG = ulOriginalPriority;
}
#endif /* #if ( ( configASSERT_DEFINED == 1 ) && ( portHAS_ARMV8M_MAIN_EXTENSION == 1 ) ) */
/* Make PendSV, CallSV and SysTick the same priority as the kernel. */
/* Make PendSV and SysTick the lowest priority interrupts, and make SVCall
* the highest priority. */
portNVIC_SHPR3_REG |= portNVIC_PENDSV_PRI;
portNVIC_SHPR3_REG |= portNVIC_SYSTICK_PRI;
portNVIC_SHPR2_REG = 0;
#if ( configENABLE_MPU == 1 )
{

67
portable/IAR/ARM_CM35P/non_secure/port.c
Unescape Escape View File

@ -80,6 +80,12 @@
#endif
/*-----------------------------------------------------------*/
/**
* @brief Prototype of all Interrupt Service Routines (ISRs).
*/
typedef void ( * portISR_t )( void );
/*-----------------------------------------------------------*/
/**
* @brief Constants required to manipulate the NVIC.
*/
@ -101,10 +107,18 @@
/**
* @brief Constants required to manipulate the SCB.
*/
#define portSCB_SYS_HANDLER_CTRL_STATE_REG ( *( volatile uint32_t * ) 0xe000ed24 )
#define portSCB_VTOR_REG ( *( ( portISR_t ** ) 0xe000ed08 ) )
#define portSCB_SYS_HANDLER_CTRL_STATE_REG ( *( ( volatile uint32_t * ) 0xe000ed24 ) )
#define portSCB_MEM_FAULT_ENABLE_BIT ( 1UL << 16UL )
/*-----------------------------------------------------------*/
/**
* @brief Constants used to check the installation of the FreeRTOS interrupt handlers.
*/
#define portVECTOR_INDEX_SVC ( 11 )
#define portVECTOR_INDEX_PENDSV ( 14 )
/*-----------------------------------------------------------*/
/**
* @brief Constants required to check the validity of an interrupt priority.
*/
@ -1598,9 +1612,42 @@ void vPortSVCHandler_C( uint32_t * pulCallerStackAddress ) /* PRIVILEGED_FUNCTIO
BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
{
/* An application can install FreeRTOS interrupt handlers in one of the
* folllowing ways:
* 1. Direct Routing - Install the functions SVC_Handler and PendSV_Handler
* for SVCall and PendSV interrupts respectively.
* 2. Indirect Routing - Install separate handlers for SVCall and PendSV
* interrupts and route program control from those handlers to
* SVC_Handler and PendSV_Handler functions.
*
* Applications that use Indirect Routing must set
* configCHECK_HANDLER_INSTALLATION to 0 in their FreeRTOSConfig.h. Direct
* routing, which is validated here when configCHECK_HANDLER_INSTALLATION
* is 1, should be preferred when possible. */
#if ( configCHECK_HANDLER_INSTALLATION == 1 )
{
const portISR_t * const pxVectorTable = portSCB_VTOR_REG;
/* Validate that the application has correctly installed the FreeRTOS
* handlers for SVCall and PendSV interrupts. We do not check the
* installation of the SysTick handler because the application may
* choose to drive the RTOS tick using a timer other than the SysTick
* timer by overriding the weak function vPortSetupTimerInterrupt().
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
* VTOR is not set correctly to point to the application's vector table. */
configASSERT( pxVectorTable[ portVECTOR_INDEX_SVC ] == SVC_Handler );
configASSERT( pxVectorTable[ portVECTOR_INDEX_PENDSV ] == PendSV_Handler );
}
#endif /* configCHECK_HANDLER_INSTALLATION */
#if ( ( configASSERT_DEFINED == 1 ) && ( portHAS_ARMV8M_MAIN_EXTENSION == 1 ) )
{
volatile uint32_t ulOriginalPriority;
volatile uint32_t ulImplementedPrioBits = 0;
volatile uint8_t ucMaxPriorityValue;
@ -1609,11 +1656,8 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
* "FromISR". FreeRTOS maintains separate thread and ISR API functions to
* ensure interrupt entry is as fast and simple as possible.
*
* Save the interrupt priority value that is about to be clobbered. */
ulOriginalPriority = portNVIC_SHPR2_REG;
/* Determine the number of priority bits available. First write to all
* possible bits. */
* First, determine the number of priority bits available. Write to all
* possible bits in the priority setting for SVCall. */
portNVIC_SHPR2_REG = 0xFF000000;
/* Read the value back to see how many bits stuck. */
@ -1636,7 +1680,6 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
/* Calculate the maximum acceptable priority group value for the number
* of bits read back. */
while( ( ucMaxPriorityValue & portTOP_BIT_OF_BYTE ) == portTOP_BIT_OF_BYTE )
{
ulImplementedPrioBits++;
@ -1674,16 +1717,14 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
* register. */
ulMaxPRIGROUPValue <<= portPRIGROUP_SHIFT;
ulMaxPRIGROUPValue &= portPRIORITY_GROUP_MASK;
/* Restore the clobbered interrupt priority register to its original
* value. */
portNVIC_SHPR2_REG = ulOriginalPriority;
}
#endif /* #if ( ( configASSERT_DEFINED == 1 ) && ( portHAS_ARMV8M_MAIN_EXTENSION == 1 ) ) */
/* Make PendSV, CallSV and SysTick the same priority as the kernel. */
/* Make PendSV and SysTick the lowest priority interrupts, and make SVCall
* the highest priority. */
portNVIC_SHPR3_REG |= portNVIC_PENDSV_PRI;
portNVIC_SHPR3_REG |= portNVIC_SYSTICK_PRI;
portNVIC_SHPR2_REG = 0;
#if ( configENABLE_MPU == 1 )
{

67
portable/IAR/ARM_CM35P_NTZ/non_secure/port.c
Unescape Escape View File

@ -80,6 +80,12 @@
#endif
/*-----------------------------------------------------------*/
/**
* @brief Prototype of all Interrupt Service Routines (ISRs).
*/
typedef void ( * portISR_t )( void );
/*-----------------------------------------------------------*/
/**
* @brief Constants required to manipulate the NVIC.
*/
@ -101,10 +107,18 @@
/**
* @brief Constants required to manipulate the SCB.
*/
#define portSCB_SYS_HANDLER_CTRL_STATE_REG ( *( volatile uint32_t * ) 0xe000ed24 )
#define portSCB_VTOR_REG ( *( ( portISR_t ** ) 0xe000ed08 ) )
#define portSCB_SYS_HANDLER_CTRL_STATE_REG ( *( ( volatile uint32_t * ) 0xe000ed24 ) )
#define portSCB_MEM_FAULT_ENABLE_BIT ( 1UL << 16UL )
/*-----------------------------------------------------------*/
/**
* @brief Constants used to check the installation of the FreeRTOS interrupt handlers.
*/
#define portVECTOR_INDEX_SVC ( 11 )
#define portVECTOR_INDEX_PENDSV ( 14 )
/*-----------------------------------------------------------*/
/**
* @brief Constants required to check the validity of an interrupt priority.
*/
@ -1598,9 +1612,42 @@ void vPortSVCHandler_C( uint32_t * pulCallerStackAddress ) /* PRIVILEGED_FUNCTIO
BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
{
/* An application can install FreeRTOS interrupt handlers in one of the
* folllowing ways:
* 1. Direct Routing - Install the functions SVC_Handler and PendSV_Handler
* for SVCall and PendSV interrupts respectively.
* 2. Indirect Routing - Install separate handlers for SVCall and PendSV
* interrupts and route program control from those handlers to
* SVC_Handler and PendSV_Handler functions.
*
* Applications that use Indirect Routing must set
* configCHECK_HANDLER_INSTALLATION to 0 in their FreeRTOSConfig.h. Direct
* routing, which is validated here when configCHECK_HANDLER_INSTALLATION
* is 1, should be preferred when possible. */
#if ( configCHECK_HANDLER_INSTALLATION == 1 )
{
const portISR_t * const pxVectorTable = portSCB_VTOR_REG;
/* Validate that the application has correctly installed the FreeRTOS
* handlers for SVCall and PendSV interrupts. We do not check the
* installation of the SysTick handler because the application may
* choose to drive the RTOS tick using a timer other than the SysTick
* timer by overriding the weak function vPortSetupTimerInterrupt().
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
* VTOR is not set correctly to point to the application's vector table. */
configASSERT( pxVectorTable[ portVECTOR_INDEX_SVC ] == SVC_Handler );
configASSERT( pxVectorTable[ portVECTOR_INDEX_PENDSV ] == PendSV_Handler );
}
#endif /* configCHECK_HANDLER_INSTALLATION */
#if ( ( configASSERT_DEFINED == 1 ) && ( portHAS_ARMV8M_MAIN_EXTENSION == 1 ) )
{
volatile uint32_t ulOriginalPriority;
volatile uint32_t ulImplementedPrioBits = 0;
volatile uint8_t ucMaxPriorityValue;
@ -1609,11 +1656,8 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
* "FromISR". FreeRTOS maintains separate thread and ISR API functions to
* ensure interrupt entry is as fast and simple as possible.
*
* Save the interrupt priority value that is about to be clobbered. */
ulOriginalPriority = portNVIC_SHPR2_REG;
/* Determine the number of priority bits available. First write to all
* possible bits. */
* First, determine the number of priority bits available. Write to all
* possible bits in the priority setting for SVCall. */
portNVIC_SHPR2_REG = 0xFF000000;
/* Read the value back to see how many bits stuck. */
@ -1636,7 +1680,6 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
/* Calculate the maximum acceptable priority group value for the number
* of bits read back. */
while( ( ucMaxPriorityValue & portTOP_BIT_OF_BYTE ) == portTOP_BIT_OF_BYTE )
{
ulImplementedPrioBits++;
@ -1674,16 +1717,14 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
* register. */
ulMaxPRIGROUPValue <<= portPRIGROUP_SHIFT;
ulMaxPRIGROUPValue &= portPRIORITY_GROUP_MASK;
/* Restore the clobbered interrupt priority register to its original
* value. */
portNVIC_SHPR2_REG = ulOriginalPriority;
}
#endif /* #if ( ( configASSERT_DEFINED == 1 ) && ( portHAS_ARMV8M_MAIN_EXTENSION == 1 ) ) */
/* Make PendSV, CallSV and SysTick the same priority as the kernel. */
/* Make PendSV and SysTick the lowest priority interrupts, and make SVCall
* the highest priority. */
portNVIC_SHPR3_REG |= portNVIC_PENDSV_PRI;
portNVIC_SHPR3_REG |= portNVIC_SYSTICK_PRI;
portNVIC_SHPR2_REG = 0;
#if ( configENABLE_MPU == 1 )
{

52
portable/IAR/ARM_CM4F/port.c
Unescape Escape View File

@ -45,10 +45,14 @@
#error configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to 0. See http: /*www.FreeRTOS.org/RTOS-Cortex-M3-M4.html */
#endif
/* Prototype of all Interrupt Service Routines (ISRs). */
typedef void ( * portISR_t )( void );
/* Constants required to manipulate the core. Registers first... */
#define portNVIC_SYSTICK_CTRL_REG ( *( ( volatile uint32_t * ) 0xe000e010 ) )
#define portNVIC_SYSTICK_LOAD_REG ( *( ( volatile uint32_t * ) 0xe000e014 ) )
#define portNVIC_SYSTICK_CURRENT_VALUE_REG ( *( ( volatile uint32_t * ) 0xe000e018 ) )
#define portNVIC_SHPR2_REG ( *( ( volatile uint32_t * ) 0xe000ed1c ) )
#define portNVIC_SHPR3_REG ( *( ( volatile uint32_t * ) 0xe000ed20 ) )
/* ...then bits in the registers. */
#define portNVIC_SYSTICK_CLK_BIT ( 1UL << 2UL )
@ -69,6 +73,11 @@
#define portNVIC_PENDSV_PRI ( ( ( uint32_t ) portMIN_INTERRUPT_PRIORITY ) << 16UL )
#define portNVIC_SYSTICK_PRI ( ( ( uint32_t ) portMIN_INTERRUPT_PRIORITY ) << 24UL )
/* Constants used to check the installation of the FreeRTOS interrupt handlers. */
#define portSCB_VTOR_REG ( *( ( portISR_t ** ) 0xE000ED08 ) )
#define portVECTOR_INDEX_SVC ( 11 )
#define portVECTOR_INDEX_PENDSV ( 14 )
/* Constants required to check the validity of an interrupt priority. */
#define portFIRST_USER_INTERRUPT_NUMBER ( 16 )
#define portNVIC_IP_REGISTERS_OFFSET_16 ( 0xE000E3F0 )
@ -141,6 +150,11 @@ extern void vPortEnableVFP( void );
*/
static void prvTaskExitError( void );
/*
* FreeRTOS handlers implemented in assembly.
*/
extern void vPortSVCHandler( void );
extern void xPortPendSVHandler( void );
/*-----------------------------------------------------------*/
/* Each task maintains its own interrupt status in the critical nesting
@ -246,6 +260,40 @@ BaseType_t xPortStartScheduler( void )
configASSERT( portCPUID != portCORTEX_M7_r0p1_ID );
configASSERT( portCPUID != portCORTEX_M7_r0p0_ID );
/* An application can install FreeRTOS interrupt handlers in one of the
* folllowing ways:
* 1. Direct Routing - Install the functions vPortSVCHandler and
* xPortPendSVHandler for SVCall and PendSV interrupts respectively.
* 2. Indirect Routing - Install separate handlers for SVCall and PendSV
* interrupts and route program control from those handlers to
* vPortSVCHandler and xPortPendSVHandler functions.
*
* Applications that use Indirect Routing must set
* configCHECK_HANDLER_INSTALLATION to 0 in their FreeRTOSConfig.h. Direct
* routing, which is validated here when configCHECK_HANDLER_INSTALLATION
* is 1, should be preferred when possible. */
#if ( configCHECK_HANDLER_INSTALLATION == 1 )
{
const portISR_t * const pxVectorTable = portSCB_VTOR_REG;
/* Validate that the application has correctly installed the FreeRTOS
* handlers for SVCall and PendSV interrupts. We do not check the
* installation of the SysTick handler because the application may
* choose to drive the RTOS tick using a timer other than the SysTick
* timer by overriding the weak function vPortSetupTimerInterrupt().
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
* VTOR is not set correctly to point to the application's vector table. */
configASSERT( pxVectorTable[ portVECTOR_INDEX_SVC ] == vPortSVCHandler );
configASSERT( pxVectorTable[ portVECTOR_INDEX_PENDSV ] == xPortPendSVHandler );
}
#endif /* configCHECK_HANDLER_INSTALLATION */
#if ( configASSERT_DEFINED == 1 )
{
volatile uint8_t ucOriginalPriority;
@ -330,9 +378,11 @@ BaseType_t xPortStartScheduler( void )
}
#endif /* configASSERT_DEFINED */
/* Make PendSV and SysTick the lowest priority interrupts. */
/* Make PendSV and SysTick the lowest priority interrupts, and make SVCall
* the highest priority. */
portNVIC_SHPR3_REG |= portNVIC_PENDSV_PRI;
portNVIC_SHPR3_REG |= portNVIC_SYSTICK_PRI;
portNVIC_SHPR2_REG = 0;
/* Start the timer that generates the tick ISR. Interrupts are disabled
* here already. */

53
portable/IAR/ARM_CM4F_MPU/port.c
Unescape Escape View File

@ -69,6 +69,9 @@
#define configALLOW_UNPRIVILEGED_CRITICAL_SECTIONS 1
#endif
/* Prototype of all Interrupt Service Routines (ISRs). */
typedef void ( * portISR_t )( void );
/* Constants required to manipulate the core. Registers first... */
#define portNVIC_SYSTICK_CTRL_REG ( *( ( volatile uint32_t * ) 0xe000e010 ) )
#define portNVIC_SYSTICK_LOAD_REG ( *( ( volatile uint32_t * ) 0xe000e014 ) )
@ -108,7 +111,11 @@
#define portMIN_INTERRUPT_PRIORITY ( 255UL )
#define portNVIC_PENDSV_PRI ( ( ( uint32_t ) portMIN_INTERRUPT_PRIORITY ) << 16UL )
#define portNVIC_SYSTICK_PRI ( ( ( uint32_t ) portMIN_INTERRUPT_PRIORITY ) << 24UL )
#define portNVIC_SVC_PRI ( ( ( uint32_t ) configMAX_SYSCALL_INTERRUPT_PRIORITY - 1UL ) << 24UL )
/* Constants used to check the installation of the FreeRTOS interrupt handlers. */
#define portSCB_VTOR_REG ( *( ( portISR_t ** ) 0xE000ED08 ) )
#define portVECTOR_INDEX_SVC ( 11 )
#define portVECTOR_INDEX_PENDSV ( 14 )
/* Constants required to check the validity of an interrupt priority. */
#define portFIRST_USER_INTERRUPT_NUMBER ( 16 )
@ -282,6 +289,11 @@ BaseType_t xPortIsTaskPrivileged( void ) PRIVILEGED_FUNCTION;
*/
void vPortSwitchToUserMode( void );
/*
* FreeRTOS handlers implemented in assembly.
*/
extern void vPortSVCHandler( void ) PRIVILEGED_FUNCTION;
extern void xPortPendSVHandler( void ) PRIVILEGED_FUNCTION;
/*-----------------------------------------------------------*/
/* Each task maintains its own interrupt status in the critical nesting
@ -384,7 +396,6 @@ void vPortSVCHandler_C( uint32_t * pulParam ) /* PRIVILEGED_FUNCTION */
switch( ucSVCNumber )
{
case portSVC_START_SCHEDULER:
portNVIC_SHPR2_REG |= portNVIC_SVC_PRI;
vPortRestoreContextOfFirstTask();
break;
@ -713,6 +724,40 @@ BaseType_t xPortStartScheduler( void )
configASSERT( portCPUID != portCORTEX_M7_r0p0_ID );
#endif
/* An application can install FreeRTOS interrupt handlers in one of the
* folllowing ways:
* 1. Direct Routing - Install the functions vPortSVCHandler and
* xPortPendSVHandler for SVCall and PendSV interrupts respectively.
* 2. Indirect Routing - Install separate handlers for SVCall and PendSV
* interrupts and route program control from those handlers to
* vPortSVCHandler and xPortPendSVHandler functions.
*
* Applications that use Indirect Routing must set
* configCHECK_HANDLER_INSTALLATION to 0 in their FreeRTOSConfig.h. Direct
* routing, which is validated here when configCHECK_HANDLER_INSTALLATION
* is 1, should be preferred when possible. */
#if ( configCHECK_HANDLER_INSTALLATION == 1 )
{
const portISR_t * const pxVectorTable = portSCB_VTOR_REG;
/* Validate that the application has correctly installed the FreeRTOS
* handlers for SVCall and PendSV interrupts. We do not check the
* installation of the SysTick handler because the application may
* choose to drive the RTOS tick using a timer other than the SysTick
* timer by overriding the weak function vPortSetupTimerInterrupt().
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
* VTOR is not set correctly to point to the application's vector table. */
configASSERT( pxVectorTable[ portVECTOR_INDEX_SVC ] == vPortSVCHandler );
configASSERT( pxVectorTable[ portVECTOR_INDEX_PENDSV ] == xPortPendSVHandler );
}
#endif /* configCHECK_HANDLER_INSTALLATION */
#if ( configASSERT_DEFINED == 1 )
{
volatile uint8_t ucOriginalPriority;
@ -797,9 +842,11 @@ BaseType_t xPortStartScheduler( void )
}
#endif /* configASSERT_DEFINED */
/* Make PendSV and SysTick the lowest priority interrupts. */
/* Make PendSV and SysTick the lowest priority interrupts, and make SVCall
* the highest priority. */
portNVIC_SHPR3_REG |= portNVIC_PENDSV_PRI;
portNVIC_SHPR3_REG |= portNVIC_SYSTICK_PRI;
portNVIC_SHPR2_REG = 0;
/* Configure the regions in the MPU that are common to all tasks. */
prvSetupMPU();

67
portable/IAR/ARM_CM55/non_secure/port.c
Unescape Escape View File

@ -80,6 +80,12 @@
#endif
/*-----------------------------------------------------------*/
/**
* @brief Prototype of all Interrupt Service Routines (ISRs).
*/
typedef void ( * portISR_t )( void );
/*-----------------------------------------------------------*/
/**
* @brief Constants required to manipulate the NVIC.
*/
@ -101,10 +107,18 @@
/**
* @brief Constants required to manipulate the SCB.
*/
#define portSCB_SYS_HANDLER_CTRL_STATE_REG ( *( volatile uint32_t * ) 0xe000ed24 )
#define portSCB_VTOR_REG ( *( ( portISR_t ** ) 0xe000ed08 ) )
#define portSCB_SYS_HANDLER_CTRL_STATE_REG ( *( ( volatile uint32_t * ) 0xe000ed24 ) )
#define portSCB_MEM_FAULT_ENABLE_BIT ( 1UL << 16UL )
/*-----------------------------------------------------------*/
/**
* @brief Constants used to check the installation of the FreeRTOS interrupt handlers.
*/
#define portVECTOR_INDEX_SVC ( 11 )
#define portVECTOR_INDEX_PENDSV ( 14 )
/*-----------------------------------------------------------*/
/**
* @brief Constants required to check the validity of an interrupt priority.
*/
@ -1598,9 +1612,42 @@ void vPortSVCHandler_C( uint32_t * pulCallerStackAddress ) /* PRIVILEGED_FUNCTIO
BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
{
/* An application can install FreeRTOS interrupt handlers in one of the
* folllowing ways:
* 1. Direct Routing - Install the functions SVC_Handler and PendSV_Handler
* for SVCall and PendSV interrupts respectively.
* 2. Indirect Routing - Install separate handlers for SVCall and PendSV
* interrupts and route program control from those handlers to
* SVC_Handler and PendSV_Handler functions.
*
* Applications that use Indirect Routing must set
* configCHECK_HANDLER_INSTALLATION to 0 in their FreeRTOSConfig.h. Direct
* routing, which is validated here when configCHECK_HANDLER_INSTALLATION
* is 1, should be preferred when possible. */
#if ( configCHECK_HANDLER_INSTALLATION == 1 )
{
const portISR_t * const pxVectorTable = portSCB_VTOR_REG;
/* Validate that the application has correctly installed the FreeRTOS
* handlers for SVCall and PendSV interrupts. We do not check the
* installation of the SysTick handler because the application may
* choose to drive the RTOS tick using a timer other than the SysTick
* timer by overriding the weak function vPortSetupTimerInterrupt().
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
* VTOR is not set correctly to point to the application's vector table. */
configASSERT( pxVectorTable[ portVECTOR_INDEX_SVC ] == SVC_Handler );
configASSERT( pxVectorTable[ portVECTOR_INDEX_PENDSV ] == PendSV_Handler );
}
#endif /* configCHECK_HANDLER_INSTALLATION */
#if ( ( configASSERT_DEFINED == 1 ) && ( portHAS_ARMV8M_MAIN_EXTENSION == 1 ) )
{
volatile uint32_t ulOriginalPriority;
volatile uint32_t ulImplementedPrioBits = 0;
volatile uint8_t ucMaxPriorityValue;
@ -1609,11 +1656,8 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
* "FromISR". FreeRTOS maintains separate thread and ISR API functions to
* ensure interrupt entry is as fast and simple as possible.
*
* Save the interrupt priority value that is about to be clobbered. */
ulOriginalPriority = portNVIC_SHPR2_REG;
/* Determine the number of priority bits available. First write to all
* possible bits. */
* First, determine the number of priority bits available. Write to all
* possible bits in the priority setting for SVCall. */
portNVIC_SHPR2_REG = 0xFF000000;
/* Read the value back to see how many bits stuck. */
@ -1636,7 +1680,6 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
/* Calculate the maximum acceptable priority group value for the number
* of bits read back. */
while( ( ucMaxPriorityValue & portTOP_BIT_OF_BYTE ) == portTOP_BIT_OF_BYTE )
{
ulImplementedPrioBits++;
@ -1674,16 +1717,14 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
* register. */
ulMaxPRIGROUPValue <<= portPRIGROUP_SHIFT;
ulMaxPRIGROUPValue &= portPRIORITY_GROUP_MASK;
/* Restore the clobbered interrupt priority register to its original
* value. */
portNVIC_SHPR2_REG = ulOriginalPriority;
}
#endif /* #if ( ( configASSERT_DEFINED == 1 ) && ( portHAS_ARMV8M_MAIN_EXTENSION == 1 ) ) */
/* Make PendSV, CallSV and SysTick the same priority as the kernel. */
/* Make PendSV and SysTick the lowest priority interrupts, and make SVCall
* the highest priority. */
portNVIC_SHPR3_REG |= portNVIC_PENDSV_PRI;
portNVIC_SHPR3_REG |= portNVIC_SYSTICK_PRI;
portNVIC_SHPR2_REG = 0;
#if ( configENABLE_MPU == 1 )
{

67
portable/IAR/ARM_CM55_NTZ/non_secure/port.c
Unescape Escape View File

@ -80,6 +80,12 @@
#endif
/*-----------------------------------------------------------*/
/**
* @brief Prototype of all Interrupt Service Routines (ISRs).
*/
typedef void ( * portISR_t )( void );
/*-----------------------------------------------------------*/
/**
* @brief Constants required to manipulate the NVIC.
*/
@ -101,10 +107,18 @@
/**
* @brief Constants required to manipulate the SCB.
*/
#define portSCB_SYS_HANDLER_CTRL_STATE_REG ( *( volatile uint32_t * ) 0xe000ed24 )
#define portSCB_VTOR_REG ( *( ( portISR_t ** ) 0xe000ed08 ) )
#define portSCB_SYS_HANDLER_CTRL_STATE_REG ( *( ( volatile uint32_t * ) 0xe000ed24 ) )
#define portSCB_MEM_FAULT_ENABLE_BIT ( 1UL << 16UL )
/*-----------------------------------------------------------*/
/**
* @brief Constants used to check the installation of the FreeRTOS interrupt handlers.
*/
#define portVECTOR_INDEX_SVC ( 11 )
#define portVECTOR_INDEX_PENDSV ( 14 )
/*-----------------------------------------------------------*/
/**
* @brief Constants required to check the validity of an interrupt priority.
*/
@ -1598,9 +1612,42 @@ void vPortSVCHandler_C( uint32_t * pulCallerStackAddress ) /* PRIVILEGED_FUNCTIO
BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
{
/* An application can install FreeRTOS interrupt handlers in one of the
* folllowing ways:
* 1. Direct Routing - Install the functions SVC_Handler and PendSV_Handler
* for SVCall and PendSV interrupts respectively.
* 2. Indirect Routing - Install separate handlers for SVCall and PendSV
* interrupts and route program control from those handlers to
* SVC_Handler and PendSV_Handler functions.
*
* Applications that use Indirect Routing must set
* configCHECK_HANDLER_INSTALLATION to 0 in their FreeRTOSConfig.h. Direct
* routing, which is validated here when configCHECK_HANDLER_INSTALLATION
* is 1, should be preferred when possible. */
#if ( configCHECK_HANDLER_INSTALLATION == 1 )
{
const portISR_t * const pxVectorTable = portSCB_VTOR_REG;
/* Validate that the application has correctly installed the FreeRTOS
* handlers for SVCall and PendSV interrupts. We do not check the
* installation of the SysTick handler because the application may
* choose to drive the RTOS tick using a timer other than the SysTick
* timer by overriding the weak function vPortSetupTimerInterrupt().
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
* VTOR is not set correctly to point to the application's vector table. */
configASSERT( pxVectorTable[ portVECTOR_INDEX_SVC ] == SVC_Handler );
configASSERT( pxVectorTable[ portVECTOR_INDEX_PENDSV ] == PendSV_Handler );
}
#endif /* configCHECK_HANDLER_INSTALLATION */
#if ( ( configASSERT_DEFINED == 1 ) && ( portHAS_ARMV8M_MAIN_EXTENSION == 1 ) )
{
volatile uint32_t ulOriginalPriority;
volatile uint32_t ulImplementedPrioBits = 0;
volatile uint8_t ucMaxPriorityValue;
@ -1609,11 +1656,8 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
* "FromISR". FreeRTOS maintains separate thread and ISR API functions to
* ensure interrupt entry is as fast and simple as possible.
*
* Save the interrupt priority value that is about to be clobbered. */
ulOriginalPriority = portNVIC_SHPR2_REG;
/* Determine the number of priority bits available. First write to all
* possible bits. */
* First, determine the number of priority bits available. Write to all
* possible bits in the priority setting for SVCall. */
portNVIC_SHPR2_REG = 0xFF000000;
/* Read the value back to see how many bits stuck. */
@ -1636,7 +1680,6 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
/* Calculate the maximum acceptable priority group value for the number
* of bits read back. */
while( ( ucMaxPriorityValue & portTOP_BIT_OF_BYTE ) == portTOP_BIT_OF_BYTE )
{
ulImplementedPrioBits++;
@ -1674,16 +1717,14 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
* register. */
ulMaxPRIGROUPValue <<= portPRIGROUP_SHIFT;
ulMaxPRIGROUPValue &= portPRIORITY_GROUP_MASK;
/* Restore the clobbered interrupt priority register to its original
* value. */
portNVIC_SHPR2_REG = ulOriginalPriority;
}
#endif /* #if ( ( configASSERT_DEFINED == 1 ) && ( portHAS_ARMV8M_MAIN_EXTENSION == 1 ) ) */
/* Make PendSV, CallSV and SysTick the same priority as the kernel. */
/* Make PendSV and SysTick the lowest priority interrupts, and make SVCall
* the highest priority. */
portNVIC_SHPR3_REG |= portNVIC_PENDSV_PRI;
portNVIC_SHPR3_REG |= portNVIC_SYSTICK_PRI;
portNVIC_SHPR2_REG = 0;
#if ( configENABLE_MPU == 1 )
{

52
portable/IAR/ARM_CM7/r0p1/port.c
Unescape Escape View File

@ -45,10 +45,14 @@
#error configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to 0. See http: /*www.FreeRTOS.org/RTOS-Cortex-M3-M4.html */
#endif
/* Prototype of all Interrupt Service Routines (ISRs). */
typedef void ( * portISR_t )( void );
/* Constants required to manipulate the core. Registers first... */
#define portNVIC_SYSTICK_CTRL_REG ( *( ( volatile uint32_t * ) 0xe000e010 ) )
#define portNVIC_SYSTICK_LOAD_REG ( *( ( volatile uint32_t * ) 0xe000e014 ) )
#define portNVIC_SYSTICK_CURRENT_VALUE_REG ( *( ( volatile uint32_t * ) 0xe000e018 ) )
#define portNVIC_SHPR2_REG ( *( ( volatile uint32_t * ) 0xe000ed1c ) )
#define portNVIC_SHPR3_REG ( *( ( volatile uint32_t * ) 0xe000ed20 ) )
/* ...then bits in the registers. */
#define portNVIC_SYSTICK_CLK_BIT ( 1UL << 2UL )
@ -63,6 +67,11 @@
#define portNVIC_PENDSV_PRI ( ( ( uint32_t ) portMIN_INTERRUPT_PRIORITY ) << 16UL )
#define portNVIC_SYSTICK_PRI ( ( ( uint32_t ) portMIN_INTERRUPT_PRIORITY ) << 24UL )
/* Constants used to check the installation of the FreeRTOS interrupt handlers. */
#define portSCB_VTOR_REG ( *( ( portISR_t ** ) 0xE000ED08 ) )
#define portVECTOR_INDEX_SVC ( 11 )
#define portVECTOR_INDEX_PENDSV ( 14 )
/* Constants required to check the validity of an interrupt priority. */
#define portFIRST_USER_INTERRUPT_NUMBER ( 16 )
#define portNVIC_IP_REGISTERS_OFFSET_16 ( 0xE000E3F0 )
@ -135,6 +144,11 @@ extern void vPortEnableVFP( void );
*/
static void prvTaskExitError( void );
/*
* FreeRTOS handlers implemented in assembly.
*/
extern void vPortSVCHandler( void );
extern void xPortPendSVHandler( void );
/*-----------------------------------------------------------*/
/* Each task maintains its own interrupt status in the critical nesting
@ -234,6 +248,40 @@ static void prvTaskExitError( void )
*/
BaseType_t xPortStartScheduler( void )
{
/* An application can install FreeRTOS interrupt handlers in one of the
* folllowing ways:
* 1. Direct Routing - Install the functions vPortSVCHandler and
* xPortPendSVHandler for SVCall and PendSV interrupts respectively.
* 2. Indirect Routing - Install separate handlers for SVCall and PendSV
* interrupts and route program control from those handlers to
* vPortSVCHandler and xPortPendSVHandler functions.
*
* Applications that use Indirect Routing must set
* configCHECK_HANDLER_INSTALLATION to 0 in their FreeRTOSConfig.h. Direct
* routing, which is validated here when configCHECK_HANDLER_INSTALLATION
* is 1, should be preferred when possible. */
#if ( configCHECK_HANDLER_INSTALLATION == 1 )
{
const portISR_t * const pxVectorTable = portSCB_VTOR_REG;
/* Validate that the application has correctly installed the FreeRTOS
* handlers for SVCall and PendSV interrupts. We do not check the
* installation of the SysTick handler because the application may
* choose to drive the RTOS tick using a timer other than the SysTick
* timer by overriding the weak function vPortSetupTimerInterrupt().
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
* VTOR is not set correctly to point to the application's vector table. */
configASSERT( pxVectorTable[ portVECTOR_INDEX_SVC ] == vPortSVCHandler );
configASSERT( pxVectorTable[ portVECTOR_INDEX_PENDSV ] == xPortPendSVHandler );
}
#endif /* configCHECK_HANDLER_INSTALLATION */
#if ( configASSERT_DEFINED == 1 )
{
volatile uint8_t ucOriginalPriority;
@ -318,9 +366,11 @@ BaseType_t xPortStartScheduler( void )
}
#endif /* configASSERT_DEFINED */
/* Make PendSV and SysTick the lowest priority interrupts. */
/* Make PendSV and SysTick the lowest priority interrupts, and make SVCall
* the highest priority. */
portNVIC_SHPR3_REG |= portNVIC_PENDSV_PRI;
portNVIC_SHPR3_REG |= portNVIC_SYSTICK_PRI;
portNVIC_SHPR2_REG = 0;
/* Start the timer that generates the tick ISR. Interrupts are disabled
* here already. */

67
portable/IAR/ARM_CM85/non_secure/port.c
Unescape Escape View File

@ -80,6 +80,12 @@
#endif
/*-----------------------------------------------------------*/
/**
* @brief Prototype of all Interrupt Service Routines (ISRs).
*/
typedef void ( * portISR_t )( void );
/*-----------------------------------------------------------*/
/**
* @brief Constants required to manipulate the NVIC.
*/
@ -101,10 +107,18 @@
/**
* @brief Constants required to manipulate the SCB.
*/
#define portSCB_SYS_HANDLER_CTRL_STATE_REG ( *( volatile uint32_t * ) 0xe000ed24 )
#define portSCB_VTOR_REG ( *( ( portISR_t ** ) 0xe000ed08 ) )
#define portSCB_SYS_HANDLER_CTRL_STATE_REG ( *( ( volatile uint32_t * ) 0xe000ed24 ) )
#define portSCB_MEM_FAULT_ENABLE_BIT ( 1UL << 16UL )
/*-----------------------------------------------------------*/
/**
* @brief Constants used to check the installation of the FreeRTOS interrupt handlers.
*/
#define portVECTOR_INDEX_SVC ( 11 )
#define portVECTOR_INDEX_PENDSV ( 14 )
/*-----------------------------------------------------------*/
/**
* @brief Constants required to check the validity of an interrupt priority.
*/
@ -1598,9 +1612,42 @@ void vPortSVCHandler_C( uint32_t * pulCallerStackAddress ) /* PRIVILEGED_FUNCTIO
BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
{
/* An application can install FreeRTOS interrupt handlers in one of the
* folllowing ways:
* 1. Direct Routing - Install the functions SVC_Handler and PendSV_Handler
* for SVCall and PendSV interrupts respectively.
* 2. Indirect Routing - Install separate handlers for SVCall and PendSV
* interrupts and route program control from those handlers to
* SVC_Handler and PendSV_Handler functions.
*
* Applications that use Indirect Routing must set
* configCHECK_HANDLER_INSTALLATION to 0 in their FreeRTOSConfig.h. Direct
* routing, which is validated here when configCHECK_HANDLER_INSTALLATION
* is 1, should be preferred when possible. */
#if ( configCHECK_HANDLER_INSTALLATION == 1 )
{
const portISR_t * const pxVectorTable = portSCB_VTOR_REG;
/* Validate that the application has correctly installed the FreeRTOS
* handlers for SVCall and PendSV interrupts. We do not check the
* installation of the SysTick handler because the application may
* choose to drive the RTOS tick using a timer other than the SysTick
* timer by overriding the weak function vPortSetupTimerInterrupt().
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
* VTOR is not set correctly to point to the application's vector table. */
configASSERT( pxVectorTable[ portVECTOR_INDEX_SVC ] == SVC_Handler );
configASSERT( pxVectorTable[ portVECTOR_INDEX_PENDSV ] == PendSV_Handler );
}
#endif /* configCHECK_HANDLER_INSTALLATION */
#if ( ( configASSERT_DEFINED == 1 ) && ( portHAS_ARMV8M_MAIN_EXTENSION == 1 ) )
{
volatile uint32_t ulOriginalPriority;
volatile uint32_t ulImplementedPrioBits = 0;
volatile uint8_t ucMaxPriorityValue;
@ -1609,11 +1656,8 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
* "FromISR". FreeRTOS maintains separate thread and ISR API functions to
* ensure interrupt entry is as fast and simple as possible.
*
* Save the interrupt priority value that is about to be clobbered. */
ulOriginalPriority = portNVIC_SHPR2_REG;
/* Determine the number of priority bits available. First write to all
* possible bits. */
* First, determine the number of priority bits available. Write to all
* possible bits in the priority setting for SVCall. */
portNVIC_SHPR2_REG = 0xFF000000;
/* Read the value back to see how many bits stuck. */
@ -1636,7 +1680,6 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
/* Calculate the maximum acceptable priority group value for the number
* of bits read back. */
while( ( ucMaxPriorityValue & portTOP_BIT_OF_BYTE ) == portTOP_BIT_OF_BYTE )
{
ulImplementedPrioBits++;
@ -1674,16 +1717,14 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
* register. */
ulMaxPRIGROUPValue <<= portPRIGROUP_SHIFT;
ulMaxPRIGROUPValue &= portPRIORITY_GROUP_MASK;
/* Restore the clobbered interrupt priority register to its original
* value. */
portNVIC_SHPR2_REG = ulOriginalPriority;
}
#endif /* #if ( ( configASSERT_DEFINED == 1 ) && ( portHAS_ARMV8M_MAIN_EXTENSION == 1 ) ) */
/* Make PendSV, CallSV and SysTick the same priority as the kernel. */
/* Make PendSV and SysTick the lowest priority interrupts, and make SVCall
* the highest priority. */
portNVIC_SHPR3_REG |= portNVIC_PENDSV_PRI;
portNVIC_SHPR3_REG |= portNVIC_SYSTICK_PRI;
portNVIC_SHPR2_REG = 0;
#if ( configENABLE_MPU == 1 )
{

67
portable/IAR/ARM_CM85_NTZ/non_secure/port.c
Unescape Escape View File

@ -80,6 +80,12 @@
#endif
/*-----------------------------------------------------------*/
/**
* @brief Prototype of all Interrupt Service Routines (ISRs).
*/
typedef void ( * portISR_t )( void );
/*-----------------------------------------------------------*/
/**
* @brief Constants required to manipulate the NVIC.
*/
@ -101,10 +107,18 @@
/**
* @brief Constants required to manipulate the SCB.
*/
#define portSCB_SYS_HANDLER_CTRL_STATE_REG ( *( volatile uint32_t * ) 0xe000ed24 )
#define portSCB_VTOR_REG ( *( ( portISR_t ** ) 0xe000ed08 ) )
#define portSCB_SYS_HANDLER_CTRL_STATE_REG ( *( ( volatile uint32_t * ) 0xe000ed24 ) )
#define portSCB_MEM_FAULT_ENABLE_BIT ( 1UL << 16UL )
/*-----------------------------------------------------------*/
/**
* @brief Constants used to check the installation of the FreeRTOS interrupt handlers.
*/
#define portVECTOR_INDEX_SVC ( 11 )
#define portVECTOR_INDEX_PENDSV ( 14 )
/*-----------------------------------------------------------*/
/**
* @brief Constants required to check the validity of an interrupt priority.
*/
@ -1598,9 +1612,42 @@ void vPortSVCHandler_C( uint32_t * pulCallerStackAddress ) /* PRIVILEGED_FUNCTIO
BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
{
/* An application can install FreeRTOS interrupt handlers in one of the
* folllowing ways:
* 1. Direct Routing - Install the functions SVC_Handler and PendSV_Handler
* for SVCall and PendSV interrupts respectively.
* 2. Indirect Routing - Install separate handlers for SVCall and PendSV
* interrupts and route program control from those handlers to
* SVC_Handler and PendSV_Handler functions.
*
* Applications that use Indirect Routing must set
* configCHECK_HANDLER_INSTALLATION to 0 in their FreeRTOSConfig.h. Direct
* routing, which is validated here when configCHECK_HANDLER_INSTALLATION
* is 1, should be preferred when possible. */
#if ( configCHECK_HANDLER_INSTALLATION == 1 )
{
const portISR_t * const pxVectorTable = portSCB_VTOR_REG;
/* Validate that the application has correctly installed the FreeRTOS
* handlers for SVCall and PendSV interrupts. We do not check the
* installation of the SysTick handler because the application may
* choose to drive the RTOS tick using a timer other than the SysTick
* timer by overriding the weak function vPortSetupTimerInterrupt().
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
* VTOR is not set correctly to point to the application's vector table. */
configASSERT( pxVectorTable[ portVECTOR_INDEX_SVC ] == SVC_Handler );
configASSERT( pxVectorTable[ portVECTOR_INDEX_PENDSV ] == PendSV_Handler );
}
#endif /* configCHECK_HANDLER_INSTALLATION */
#if ( ( configASSERT_DEFINED == 1 ) && ( portHAS_ARMV8M_MAIN_EXTENSION == 1 ) )
{
volatile uint32_t ulOriginalPriority;
volatile uint32_t ulImplementedPrioBits = 0;
volatile uint8_t ucMaxPriorityValue;
@ -1609,11 +1656,8 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
* "FromISR". FreeRTOS maintains separate thread and ISR API functions to
* ensure interrupt entry is as fast and simple as possible.
*
* Save the interrupt priority value that is about to be clobbered. */
ulOriginalPriority = portNVIC_SHPR2_REG;
/* Determine the number of priority bits available. First write to all
* possible bits. */
* First, determine the number of priority bits available. Write to all
* possible bits in the priority setting for SVCall. */
portNVIC_SHPR2_REG = 0xFF000000;
/* Read the value back to see how many bits stuck. */
@ -1636,7 +1680,6 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
/* Calculate the maximum acceptable priority group value for the number
* of bits read back. */
while( ( ucMaxPriorityValue & portTOP_BIT_OF_BYTE ) == portTOP_BIT_OF_BYTE )
{
ulImplementedPrioBits++;
@ -1674,16 +1717,14 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
* register. */
ulMaxPRIGROUPValue <<= portPRIGROUP_SHIFT;
ulMaxPRIGROUPValue &= portPRIORITY_GROUP_MASK;
/* Restore the clobbered interrupt priority register to its original
* value. */
portNVIC_SHPR2_REG = ulOriginalPriority;
}
#endif /* #if ( ( configASSERT_DEFINED == 1 ) && ( portHAS_ARMV8M_MAIN_EXTENSION == 1 ) ) */
/* Make PendSV, CallSV and SysTick the same priority as the kernel. */
/* Make PendSV and SysTick the lowest priority interrupts, and make SVCall
* the highest priority. */
portNVIC_SHPR3_REG |= portNVIC_PENDSV_PRI;
portNVIC_SHPR3_REG |= portNVIC_SYSTICK_PRI;
portNVIC_SHPR2_REG = 0;
#if ( configENABLE_MPU == 1 )
{

50
portable/RVDS/ARM_CM4_MPU/port.c
Unescape Escape View File

@ -51,6 +51,9 @@
#define configALLOW_UNPRIVILEGED_CRITICAL_SECTIONS 1
#endif
/* Prototype of all Interrupt Service Routines (ISRs). */
typedef void ( * portISR_t )( void );
/* Constants required to access and manipulate the NVIC. */
#define portNVIC_SYSTICK_CTRL_REG ( *( ( volatile uint32_t * ) 0xe000e010 ) )
#define portNVIC_SYSTICK_LOAD_REG ( *( ( volatile uint32_t * ) 0xe000e014 ) )
@ -87,7 +90,6 @@
#define portMIN_INTERRUPT_PRIORITY ( 255UL )
#define portNVIC_PENDSV_PRI ( ( ( uint32_t ) portMIN_INTERRUPT_PRIORITY ) << 16UL )
#define portNVIC_SYSTICK_PRI ( ( ( uint32_t ) portMIN_INTERRUPT_PRIORITY ) << 24UL )
#define portNVIC_SVC_PRI ( ( ( uint32_t ) configMAX_SYSCALL_INTERRUPT_PRIORITY - 1UL ) << 24UL )
/* Constants required to manipulate the VFP. */
#define portFPCCR ( ( volatile uint32_t * ) 0xe000ef34UL ) /* Floating point context control register. */
@ -99,6 +101,11 @@
#define portINITIAL_CONTROL_IF_UNPRIVILEGED ( 0x03 )
#define portINITIAL_CONTROL_IF_PRIVILEGED ( 0x02 )
/* Constants used to check the installation of the FreeRTOS interrupt handlers. */
#define portSCB_VTOR_REG ( *( ( portISR_t ** ) 0xE000ED08 ) )
#define portVECTOR_INDEX_SVC ( 11 )
#define portVECTOR_INDEX_PENDSV ( 14 )
/* Constants required to check the validity of an interrupt priority. */
#define portFIRST_USER_INTERRUPT_NUMBER ( 16 )
#define portNVIC_IP_REGISTERS_OFFSET_16 ( 0xE000E3F0 )
@ -386,7 +393,6 @@ void vSVCHandler_C( uint32_t * pulParam )
switch( ucSVCNumber )
{
case portSVC_START_SCHEDULER:
portNVIC_SHPR2_REG |= portNVIC_SVC_PRI;
prvRestoreContextOfFirstTask();
break;
@ -822,6 +828,40 @@ BaseType_t xPortStartScheduler( void )
configASSERT( portCPUID != portCORTEX_M7_r0p0_ID );
#endif
/* An application can install FreeRTOS interrupt handlers in one of the
* folllowing ways:
* 1. Direct Routing - Install the functions vPortSVCHandler and
* xPortPendSVHandler for SVCall and PendSV interrupts respectively.
* 2. Indirect Routing - Install separate handlers for SVCall and PendSV
* interrupts and route program control from those handlers to
* vPortSVCHandler and xPortPendSVHandler functions.
*
* Applications that use Indirect Routing must set
* configCHECK_HANDLER_INSTALLATION to 0 in their FreeRTOSConfig.h. Direct
* routing, which is validated here when configCHECK_HANDLER_INSTALLATION
* is 1, should be preferred when possible. */
#if ( configCHECK_HANDLER_INSTALLATION == 1 )
{
const portISR_t * const pxVectorTable = portSCB_VTOR_REG;
/* Validate that the application has correctly installed the FreeRTOS
* handlers for SVCall and PendSV interrupts. We do not check the
* installation of the SysTick handler because the application may
* choose to drive the RTOS tick using a timer other than the SysTick
* timer by overriding the weak function vPortSetupTimerInterrupt().
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
* VTOR is not set correctly to point to the application's vector table. */
configASSERT( pxVectorTable[ portVECTOR_INDEX_SVC ] == vPortSVCHandler );
configASSERT( pxVectorTable[ portVECTOR_INDEX_PENDSV ] == xPortPendSVHandler );
}
#endif /* configCHECK_HANDLER_INSTALLATION */
#if ( configASSERT_DEFINED == 1 )
{
volatile uint8_t ucOriginalPriority;
@ -907,10 +947,11 @@ BaseType_t xPortStartScheduler( void )
#endif /* configASSERT_DEFINED */
/* Make PendSV and SysTick the same priority as the kernel, and the SVC
* handler higher priority so it can be used to exit a critical section (where
* lower priorities are masked). */
* handler highest priority so it can be used to exit a critical section
* (where lower priorities are masked). */
portNVIC_SHPR3_REG |= portNVIC_PENDSV_PRI;
portNVIC_SHPR3_REG |= portNVIC_SYSTICK_PRI;
portNVIC_SHPR2_REG = 0;
/* Configure the regions in the MPU that are common to all tasks. */
prvSetupMPU();
@ -1196,6 +1237,7 @@ __asm void vPortEnableVFP( void )
orr r1, r1, #( 0xf << 20 ) /* Enable CP10 and CP11 coprocessors, then save back. */
str r1, [ r0 ]
bx r14
nop
/* *INDENT-ON* */
}
/*-----------------------------------------------------------*/

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