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Add Cortex M7 r0p1 Errata 837070 workaround to CM4_MPU ports (#513)

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* Clarify Cortex M7 r0p1 errata number in r0p1 specific port.

* Add ARM Cortex M7 r0p0 / r0p1 Errata 837070 workaround to CM4 MPU ports.

Optionally, enable the errata workaround by defining configTARGET_ARM_CM7_r0p0 or configTARGET_ARM_CM7_r0p1 in FreeRTOSConfig.h.

* Add r0p1 errata support to IAR port as well

Signed-off-by: Gaurav Aggarwal <aggarg@amazon.com>

* Change macro name to configENABLE_ERRATA_837070_WORKAROUND

Signed-off-by: Gaurav Aggarwal <aggarg@amazon.com>

Co-authored-by: Gaurav Aggarwal <aggarg@amazon.com>
This commit is contained in:
Paul Bartell 2022-06-29 22:05:26 -07:00 • committed by GitHub
parent 8e89acfc98
commit 2dfdfc4ba4
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8 changed files with 122 additions and 24 deletions
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20
portable/IAR/ARM_CM4F_MPU/port.c
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@ -98,8 +98,8 @@
#define portNVIC_PENDSVCLEAR_BIT ( 1UL << 27UL )
#define portNVIC_PEND_SYSTICK_CLEAR_BIT ( 1UL << 25UL )
/* Constants used to detect a Cortex-M7 r0p1 core, which should use the ARM_CM7
* r0p1 port. */
/* Constants used to detect Cortex-M7 r0p0 and r0p1 cores, and ensure
* that a work around is active for errata 837070. */
#define portCPUID ( *( ( volatile uint32_t * ) 0xE000ed00 ) )
#define portCORTEX_M7_r0p1_ID ( 0x410FC271UL )
#define portCORTEX_M7_r0p0_ID ( 0x410FC270UL )
@ -350,11 +350,17 @@ BaseType_t xPortStartScheduler( void )
* See https://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html */
configASSERT( configMAX_SYSCALL_INTERRUPT_PRIORITY );
/* This port can be used on all revisions of the Cortex-M7 core other than
* the r0p1 parts. r0p1 parts should use the port from the
* /source/portable/GCC/ARM_CM7/r0p1 directory. */
configASSERT( portCPUID != portCORTEX_M7_r0p1_ID );
configASSERT( portCPUID != portCORTEX_M7_r0p0_ID );
/* Errata 837070 workaround must only be enabled on Cortex-M7 r0p0
* and r0p1 cores. */
#if ( configENABLE_ERRATA_837070_WORKAROUND == 1 )
configASSERT( ( portCPUID == portCORTEX_M7_r0p1_ID ) || ( portCPUID == portCORTEX_M7_r0p0_ID ) );
#else
/* When using this port on a Cortex-M7 r0p0 or r0p1 core, define
* configENABLE_ERRATA_837070_WORKAROUND to 1 in your
* FreeRTOSConfig.h. */
configASSERT( portCPUID != portCORTEX_M7_r0p1_ID );
configASSERT( portCPUID != portCORTEX_M7_r0p0_ID );
#endif
#if ( configASSERT_DEFINED == 1 )
{