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|
/*===============================================================*\
| Project: RTEMS generic MPC5200 BSP |
+-----------------------------------------------------------------+
| Partially based on the code references which are named below. |
| Adaptions, modifications, enhancements and any recent parts of |
| the code are: |
| Copyright (c) 2005 |
| Embedded Brains GmbH |
| Obere Lagerstr. 30 |
| D-82178 Puchheim |
| Germany |
| rtems@embedded-brains.de |
+-----------------------------------------------------------------+
| The license and distribution terms for this file may be |
| found in the file LICENSE in this distribution or at |
| |
| http://www.rtems.com/license/LICENSE. |
| |
+-----------------------------------------------------------------+
| this file contains the irq controller handler |
\*===============================================================*/
/***********************************************************************/
/* */
/* Module: vectors_init.c */
/* Date: 07/17/2003 */
/* Purpose: RTEMS exception handling initialization */
/* */
/*---------------------------------------------------------------------*/
/* */
/* Description: This include file describe the data structure and */
/* the functions implemented by rtems to handle */
/* exceptions. */
/* */
/*---------------------------------------------------------------------*/
/* */
/* Code */
/* References: RTEMS exception handling initialization */
/* */
/* Module: vectors_init.c */
/* Project: RTEMS 4.6.0pre1 / MCF8260ads BSP */
/* Version 1.2 */
/* Date: 11/04/2002 */
/* */
/* Author(s) / Copyright(s): */
/* */
/* CopyRight (C) 1999 valette@crf.canon.fr */
/* */
/* The license and distribution terms for this file may be */
/* found in found in the file LICENSE in this distribution or at */
/* http://www.OARcorp.com/rtems/license.html. */
/* */
/*---------------------------------------------------------------------*/
/* */
/* Partially based on the code references which are named above. */
/* Adaptions, modifications, enhancements and any recent parts of */
/* the code are under the right of */
/* */
/* IPR Engineering, Dachauer Straße 38, D-80335 München */
/* Copyright(C) 2003 */
/* */
/*---------------------------------------------------------------------*/
/* */
/* IPR Engineering makes no representation or warranties with */
/* respect to the performance of this computer program, and */
/* specifically disclaims any responsibility for any damages, */
/* special or consequential, connected with the use of this program. */
/* */
/*---------------------------------------------------------------------*/
/* */
/* Version history: 1.0 */
/* */
/***********************************************************************/
#include "../vectors/vectors.h"
#include <libcpu/raw_exception.h>
#include <bsp.h>
#include <rtems/bspIo.h>
extern int mpc60x_vector_is_valid(rtems_vector);
static rtems_raw_except_global_settings exception_config;
static rtems_raw_except_connect_data exception_table[LAST_VALID_EXC + 1];
exception_handler_t globalExceptHdl;
void C_exception_handler(BSP_Exception_frame* excPtr)
{
int recoverable = 0;
printk("exception handler called for exception %d\n", excPtr->_EXC_number);
printk("\t Next PC or Address of fault = %x\n", excPtr->EXC_SRR0);
printk("\t Saved MSR = %x\n", excPtr->EXC_SRR1);
printk("\t R0 = %x\n", excPtr->GPR0);
printk("\t R1 = %x\n", excPtr->GPR1);
printk("\t R2 = %x\n", excPtr->GPR2);
printk("\t R3 = %x\n", excPtr->GPR3);
printk("\t R4 = %x\n", excPtr->GPR4);
printk("\t R5 = %x\n", excPtr->GPR5);
printk("\t R6 = %x\n", excPtr->GPR6);
printk("\t R7 = %x\n", excPtr->GPR7);
printk("\t R8 = %x\n", excPtr->GPR8);
printk("\t R9 = %x\n", excPtr->GPR9);
printk("\t R10 = %x\n", excPtr->GPR10);
printk("\t R11 = %x\n", excPtr->GPR11);
printk("\t R12 = %x\n", excPtr->GPR12);
printk("\t R13 = %x\n", excPtr->GPR13);
printk("\t R14 = %x\n", excPtr->GPR14);
printk("\t R15 = %x\n", excPtr->GPR15);
printk("\t R16 = %x\n", excPtr->GPR16);
printk("\t R17 = %x\n", excPtr->GPR17);
printk("\t R18 = %x\n", excPtr->GPR18);
printk("\t R19 = %x\n", excPtr->GPR19);
printk("\t R20 = %x\n", excPtr->GPR20);
printk("\t R21 = %x\n", excPtr->GPR21);
printk("\t R22 = %x\n", excPtr->GPR22);
printk("\t R23 = %x\n", excPtr->GPR23);
printk("\t R24 = %x\n", excPtr->GPR24);
printk("\t R25 = %x\n", excPtr->GPR25);
printk("\t R26 = %x\n", excPtr->GPR26);
printk("\t R27 = %x\n", excPtr->GPR27);
printk("\t R28 = %x\n", excPtr->GPR28);
printk("\t R29 = %x\n", excPtr->GPR29);
printk("\t R30 = %x\n", excPtr->GPR30);
printk("\t R31 = %x\n", excPtr->GPR31);
printk("\t CR = %x\n", excPtr->EXC_CR);
printk("\t CTR = %x\n", excPtr->EXC_CTR);
printk("\t XER = %x\n", excPtr->EXC_XER);
printk("\t LR = %x\n", excPtr->EXC_LR);
printk("\t MSR = %x\n", excPtr->EXC_MSR);
if(excPtr->_EXC_number == ASM_DEC_VECTOR)
recoverable = 1;
if(excPtr->_EXC_number == ASM_SYS_VECTOR)
recoverable = 1;
#if 0
#ifdef TEST_RAW_EXCEPTION_CODE
recoverable = 1;
#else
recoverable = 0;
#endif
if (!recoverable) {
printk("unrecoverable exception!!! Push reset button\n");
while(1);
}
#endif
}
void nop_except_enable(const rtems_raw_except_connect_data* ptr)
{
}
int except_always_enabled(const rtems_raw_except_connect_data* ptr)
{
return 1;
}
void initialize_exceptions()
{
int i;
/*
* Initialize pointer used by low level execption handling
*/
globalExceptHdl = C_exception_handler;
/*
* Put default_exception_vector_code_prolog at relevant exception
* code entry addresses
*/
exception_config.exceptSize = LAST_VALID_EXC + 1;
exception_config.rawExceptHdlTbl = &exception_table[0];
exception_config.defaultRawEntry.exceptIndex = 0;
exception_config.defaultRawEntry.hdl.vector = 0;
exception_config.defaultRawEntry.hdl.raw_hdl = default_exception_vector_code_prolog;
/*
* Note that next line the '&' before default_exception_vector_code_prolog_size
* is not a bug as it is defined a .set directly in asm...
*/
exception_config.defaultRawEntry.hdl.raw_hdl_size = (unsigned) &default_exception_vector_code_prolog_size;
for (i=0; i <= exception_config.exceptSize; i++)
{
printk("installing exception number %d\n", i);
if (!mpc60x_vector_is_valid(i))
continue;
exception_table[i].exceptIndex = i;
exception_table[i].hdl = exception_config.defaultRawEntry.hdl;
exception_table[i].hdl.vector = i;
exception_table[i].on = nop_except_enable;
exception_table[i].off = nop_except_enable;
exception_table[i].isOn = except_always_enabled;
}
if (!mpc60x_init_exceptions(&exception_config))
BSP_panic("Exception handling initialization failed\n");
else
printk("Exception handling initialization done\n");
}
|
