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Add GCC ARM Cortex-M4F MPU port.

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Add RVDS ARM Cortex-M4F MPU port.
Increase the size of each buffer allocated to pbufs in the Microblaze lwIP demo to prevent pbufs chaining.
Use _start as the top of the stack for each Microblaze task, rather than NULL, as NULL was causing the Xilinx SDK to try and unwind the stack too far.
This commit is contained in:
Richard Barry 2016-05-18 10:41:28 +00:00
parent fedb98c5f6
commit ee9cd40b6d
10 changed files with 2365 additions and 2671 deletions
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6
FreeRTOS/Source/portable/GCC/MicroBlazeV9/port.c
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@ -99,6 +99,7 @@ FSR register is saved as part of the task context. portINITIAL_FSR is the value
given to the FSR register when the initial context is set up for a task being
created. */
#define portINITIAL_FSR ( 0U )
/*-----------------------------------------------------------*/
/*
@ -150,6 +151,7 @@ StackType_t *pxPortInitialiseStack( StackType_t *pxTopOfStack, TaskFunction_t px
extern void *_SDA2_BASE_, *_SDA_BASE_;
const uint32_t ulR2 = ( uint32_t ) &_SDA2_BASE_;
const uint32_t ulR13 = ( uint32_t ) &_SDA_BASE_;
extern void _start1( void );
/* Place a few bytes of known values on the bottom of the stack.
This is essential for the Microblaze port and these lines must
@ -204,7 +206,7 @@ const uint32_t ulR13 = ( uint32_t ) &_SDA_BASE_;
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0x07; /* R7 - other parameters and temporaries. */
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0x08; /* R8 - other parameters and temporaries. */
*pxTopOfStack = ( StackType_t ) NULL; /* R8 - other parameters and temporaries. */
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0x09; /* R9 - other parameters and temporaries. */
pxTopOfStack--;
@ -222,7 +224,7 @@ const uint32_t ulR13 = ( uint32_t ) &_SDA_BASE_;
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) pxCode; /* R14 - return address for interrupt. */
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) NULL; /* R15 - return address for subroutine. */
*pxTopOfStack = ( StackType_t ) _start1; /* R15 - return address for subroutine. */
#ifdef portPRE_LOAD_STACK_FOR_DEBUGGING
pxTopOfStack--;