forked from Imagelibrary/rtems
9b4422a251
Script does what is expected and tries to do it as smartly as possible. + remove occurrences of two blank comment lines next to each other after Id string line removed. + remove entire comment blocks which only exited to contain CVS Ids + If the processing left a blank line at the top of a file, it was removed.
166 lines
4.0 KiB
C
166 lines
4.0 KiB
C
/*
|
|
* LEON Spurious Trap Handler
|
|
*
|
|
* This is just enough of a trap handler to let us know what
|
|
* the likely source of the trap was.
|
|
*
|
|
* Developed as part of the port of RTEMS to the LEON implementation
|
|
* of the SPARC by On-Line Applications Research Corporation (OAR)
|
|
* under contract to the European Space Agency (ESA).
|
|
*
|
|
* COPYRIGHT (c) 1995. European Space Agency.
|
|
*
|
|
* Modified for LEON3 BSP.
|
|
* COPYRIGHT (c) 2004.
|
|
* Gaisler Research.
|
|
*
|
|
* This terms of the RTEMS license apply to this file.
|
|
*/
|
|
|
|
#include <bsp.h>
|
|
|
|
#include <rtems/bspIo.h>
|
|
|
|
/*
|
|
* bsp_spurious_handler
|
|
*
|
|
* Print a message on the debug console and then die
|
|
*/
|
|
|
|
rtems_isr bsp_spurious_handler(
|
|
rtems_vector_number trap,
|
|
CPU_Interrupt_frame *isf
|
|
)
|
|
{
|
|
uint32_t real_trap;
|
|
|
|
real_trap = SPARC_REAL_TRAP_NUMBER(trap);
|
|
|
|
printk( "Unexpected trap (0x%02x) at address 0x%08x\n", real_trap, isf->tpc);
|
|
|
|
switch (real_trap) {
|
|
|
|
/*
|
|
* First the ones defined by the basic architecture
|
|
*/
|
|
|
|
case 0x00:
|
|
printk( "reset\n" );
|
|
break;
|
|
case 0x01:
|
|
printk( "instruction access exception\n" );
|
|
break;
|
|
case 0x02:
|
|
printk( "illegal instruction\n" );
|
|
break;
|
|
case 0x03:
|
|
printk( "privileged instruction\n" );
|
|
break;
|
|
case 0x04:
|
|
printk( "fp disabled\n" );
|
|
break;
|
|
case 0x07:
|
|
printk( "memory address not aligned\n" );
|
|
break;
|
|
case 0x08:
|
|
printk( "fp exception\n" );
|
|
break;
|
|
case 0x09:
|
|
printk( "Unexpected trap (0x%2d) at address XXX\n",
|
|
real_trap
|
|
/* XXX FIXME isf->tpc */
|
|
);
|
|
break;
|
|
case 0x0A:
|
|
printk( "tag overflow\n" );
|
|
break;
|
|
|
|
/*
|
|
* Then the ones defined by the LEON in particular
|
|
*/
|
|
/* FIXME */
|
|
|
|
/*
|
|
case LEON_TRAP_TYPE( LEON_INTERRUPT_CORRECTABLE_MEMORY_ERROR ):
|
|
printk( "LEON_INTERRUPT_CORRECTABLE_MEMORY_ERROR\n" );
|
|
break;
|
|
case LEON_TRAP_TYPE( LEON_INTERRUPT_UART_2_RX_TX ):
|
|
printk( "LEON_INTERRUPT_UART_2_RX_TX\n" );
|
|
break;
|
|
case LEON_TRAP_TYPE( LEON_INTERRUPT_UART_1_RX_TX ):
|
|
printk( "LEON_INTERRUPT_UART_1_RX_TX\n" );
|
|
break;
|
|
case LEON_TRAP_TYPE( LEON_INTERRUPT_EXTERNAL_0 ):
|
|
printk( "LEON_INTERRUPT_EXTERNAL_0\n" );
|
|
break;
|
|
case LEON_TRAP_TYPE( LEON_INTERRUPT_EXTERNAL_1 ):
|
|
printk( "LEON_INTERRUPT_EXTERNAL_1\n" );
|
|
break;
|
|
case LEON_TRAP_TYPE( LEON_INTERRUPT_EXTERNAL_2 ):
|
|
printk( "LEON_INTERRUPT_EXTERNAL_2\n" );
|
|
break;
|
|
case LEON_TRAP_TYPE( LEON_INTERRUPT_EXTERNAL_3 ):
|
|
printk( "LEON_INTERRUPT_EXTERNAL_3\n" );
|
|
break;
|
|
case LEON_TRAP_TYPE( LEON_INTERRUPT_TIMER1 ):
|
|
printk( "LEON_INTERRUPT_TIMER1\n" );
|
|
break;
|
|
case LEON_TRAP_TYPE( LEON_INTERRUPT_TIMER2 ):
|
|
printk( "LEON_INTERRUPT_TIMER2\n" );
|
|
break;
|
|
*/
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* What else can we do but stop ...
|
|
*/
|
|
|
|
__asm__ volatile( "mov 1, %g1; ta 0x0" );
|
|
}
|
|
|
|
/*
|
|
* bsp_spurious_initialize
|
|
*
|
|
* Install the spurious handler for most traps. Note that set_vector()
|
|
* will unmask the corresponding asynchronous interrupt, so the initial
|
|
* interrupt mask is restored after the handlers are installed.
|
|
*/
|
|
|
|
void bsp_spurious_initialize()
|
|
{
|
|
uint32_t trap;
|
|
uint32_t level;
|
|
/* uint32_t mask; */
|
|
|
|
level = sparc_disable_interrupts();
|
|
/* mask = LEON3_IrqCtrl_Regs->mask_p0; */
|
|
|
|
for ( trap=0 ; trap<256 ; trap++ ) {
|
|
|
|
/*
|
|
* Skip window overflow, underflow, and flush as well as software
|
|
* trap 0 which we will use as a shutdown. Also avoid trap 0x70 - 0x7f
|
|
* which cannot happen and where some of the space is used to pass
|
|
* paramaters to the program.
|
|
*/
|
|
|
|
if (( trap == 5 || trap == 6 ) ||
|
|
(( trap >= 0x11 ) && ( trap <= 0x1f )) ||
|
|
(( trap >= 0x70 ) && ( trap <= 0x83 )))
|
|
continue;
|
|
|
|
set_vector(
|
|
(rtems_isr_entry) bsp_spurious_handler,
|
|
SPARC_SYNCHRONOUS_TRAP( trap ),
|
|
1
|
|
);
|
|
}
|
|
|
|
/* LEON3_IrqCtrl_Regs->mask_p0 = mask; */
|
|
sparc_enable_interrupts(level);
|
|
|
|
}
|