diff options
Diffstat (limited to 'portable/IAR/ARM_CM4F_MPU/port.c')
| -rw-r--r-- | portable/IAR/ARM_CM4F_MPU/port.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/portable/IAR/ARM_CM4F_MPU/port.c b/portable/IAR/ARM_CM4F_MPU/port.c index c3bab2671..a682a9d87 100644 --- a/portable/IAR/ARM_CM4F_MPU/port.c +++ b/portable/IAR/ARM_CM4F_MPU/port.c @@ -1253,7 +1253,15 @@ BaseType_t xPortIsAuthorizedToAccessBuffer( const void * pvBuffer, BaseType_t xAccessGranted = pdFALSE; const xMPU_SETTINGS * xTaskMpuSettings = xTaskGetMPUSettings( NULL ); /* Calling task's MPU settings. */ - if( ( xTaskMpuSettings->ulTaskFlags & portTASK_IS_PRIVILEGED_FLAG ) == portTASK_IS_PRIVILEGED_FLAG ) + if( xSchedulerRunning == pdFALSE ) + { + /* Grant access to all the kernel objects before the scheduler + * is started. It is necessary because there is no task running + * yet and therefore, we cannot use the permissions of any + * task. */ + xAccessGranted = pdTRUE; + } + else if( ( xTaskMpuSettings->ulTaskFlags & portTASK_IS_PRIVILEGED_FLAG ) == portTASK_IS_PRIVILEGED_FLAG ) { xAccessGranted = pdTRUE; } |