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New MicroBlaze port: Added a FreeRTOS exception handler, and installed it in each position in the exception table. The handler itself does not do much yet.

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This commit is contained in:
Richard Barry 2011-06-24 18:50:45 +00:00
parent 4108061316
commit 8b0ccf1444
5 changed files with 75 additions and 15 deletions
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73
Demo/MicroBlaze_Spartan-6_EthernetLite/SDKProjects/RTOSDemoSource/FreeRTOS_Source/portable/GCC/MicroBlaze/port.c
View file

@ -64,12 +64,10 @@
#include <string.h>
/* Hardware includes. */
#include <xparameters.h>
#include <xintc.h>
#include <xintc_i.h>
#include <xtmrctr.h>
#include <xil_exception.h>
#include <mb_interface.h>
#include <microblaze_exceptions_i.h>
#include <microblaze_exceptions_g.h>
/* Tasks are started with a critical section nesting of 0 - however prior
to the scheduler being commenced we don't want the critical nesting level
@ -87,6 +85,8 @@ to reach zero, so it is initialised to a high value. */
*/
static portBASE_TYPE prvInitialiseInterruptController( void );
static void prvExceptionHandler( void *pvExceptionID );
/*
* Call an application provided callback to set up the periodic interrupt used
* for the RTOS tick. Using an application callback allows the application
@ -344,6 +344,20 @@ extern void vApplicationClearTimerInterrupt( void );
}
/*-----------------------------------------------------------*/
static void prvExceptionHandler( void *pvExceptionID )
{
volatile unsigned long ulExceptionID;
ulExceptionID = ( unsigned long ) pvExceptionID;
for( ;; )
{
portNOP();
}
( void ) ulExceptionID;
}
/*-----------------------------------------------------------*/
static portBASE_TYPE prvInitialiseInterruptController( void )
{
portBASE_TYPE xStatus;
@ -358,6 +372,47 @@ portBASE_TYPE xStatus;
/* Service all pending interrupts each time the handler is entered. */
XIntc_SetIntrSvcOption( xInterruptControllerInstance.BaseAddress, XIN_SVC_ALL_ISRS_OPTION );
/* Install exception handlers. */
#if MICROBLAZE_EXCEPTIONS_ENABLED == 1
#if XPAR_MICROBLAZE_0_UNALIGNED_EXCEPTIONS == 1
microblaze_register_exception_handler( XEXC_ID_UNALIGNED_ACCESS, prvExceptionHandler, ( void * ) XEXC_ID_UNALIGNED_ACCESS );
#endif /* XPAR_MICROBLAZE_0_UNALIGNED_EXCEPTIONS*/
#if XPAR_MICROBLAZE_0_ILL_OPCODE_EXCEPTION == 1
microblaze_register_exception_handler( XEXC_ID_ILLEGAL_OPCODE, prvExceptionHandler, ( void * ) XEXC_ID_ILLEGAL_OPCODE );
#endif /* XPAR_MICROBLAZE_0_ILL_OPCODE_EXCEPTION*/
#if XPAR_MICROBLAZE_0_M_AXI_I_BUS_EXCEPTION == 1
microblaze_register_exception_handler( XEXC_ID_M_AXI_I_EXCEPTION, prvExceptionHandler, ( void * ) XEXC_ID_M_AXI_I_EXCEPTION );
#endif /* XPAR_MICROBLAZE_0_M_AXI_I_BUS_EXCEPTION*/
#if XPAR_MICROBLAZE_0_M_AXI_D_BUS_EXCEPTION == 1
microblaze_register_exception_handler( XEXC_ID_M_AXI_D_EXCEPTION, prvExceptionHandler, ( void * ) XEXC_ID_M_AXI_D_EXCEPTION );
#endif /* XPAR_MICROBLAZE_0_M_AXI_D_BUS_EXCEPTION*/
#if XPAR_MICROBLAZE_0_IPLB_BUS_EXCEPTION == 1
microblaze_register_exception_handler( XEXC_ID_IPLB_EXCEPTION, prvExceptionHandler, ( void * ) XEXC_ID_IPLB_EXCEPTION );
#endif /* XPAR_MICROBLAZE_0_IPLB_BUS_EXCEPTION*/
#if XPAR_MICROBLAZE_0_DPLB_BUS_EXCEPTION == 1
microblaze_register_exception_handler( XEXC_ID_DPLB_EXCEPTION, prvExceptionHandler, ( void * ) XEXC_ID_DPLB_EXCEPTION );
#endif /* XPAR_MICROBLAZE_0_DPLB_BUS_EXCEPTION*/
#if XPAR_MICROBLAZE_0_DIV_ZERO_EXCEPTION == 1
microblaze_register_exception_handler( XEXC_ID_DIV_BY_ZERO, prvExceptionHandler, ( void * ) XEXC_ID_DIV_BY_ZERO );
#endif /* XPAR_MICROBLAZE_0_DIV_ZERO_EXCEPTION*/
#if XPAR_MICROBLAZE_0_FPU_EXCEPTION == 1
microblaze_register_exception_handler( XEXC_ID_FPU, prvExceptionHandler, ( void * ) XEXC_ID_FPU );
#endif /* XPAR_MICROBLAZE_0_FPU_EXCEPTION*/
#if XPAR_MICROBLAZE_0_FSL_EXCEPTION == 1
microblaze_register_exception_handler( XEXC_ID_FSL, prvExceptionHandler, ( void * ) XEXC_ID_FSL );
#endif /* XPAR_MICROBLAZE_0_FSL_EXCEPTION*/
#endif /* MICROBLAZE_EXCEPTIONS_ENABLED */
/* Start the interrupt controller. Interrupts are enabled when the
scheduler starts. */
xStatus = XIntc_Start( &xInterruptControllerInstance, XIN_REAL_MODE );
@ -369,9 +424,15 @@ portBASE_TYPE xStatus;
configASSERT( ( xStatus == ( portBASE_TYPE ) XST_SUCCESS ) )
/*_RB_ Exception test code.
__asm volatile (
"bralid r15, 1234 \n"
"or r0, r0, r0 \n"
);
*/
return xStatus;
}
/*-----------------------------------------------------------*/

3
Demo/MicroBlaze_Spartan-6_EthernetLite/SDKProjects/RTOSDemoSource/FreeRTOS_Source/portable/GCC/MicroBlaze/portmacro.h
View file

@ -59,7 +59,8 @@ extern "C" {
#endif
/* BSP includes. */
#include "xbasic_types.h"
#include <mb_interface.h>
#include <xparameters.h>
/*-----------------------------------------------------------
* Port specific definitions.