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/* bsp_start()
*
* This routine starts the application. It includes application,
* board, and monitor specific initialization and configuration.
* The generic CPU dependent initialization has been performed
* before this routine is invoked.
*
* INPUT: NONE
*
* OUTPUT: NONE
*
* COPYRIGHT (c) 1989-1998.
* On-Line Applications Research Corporation (OAR).
* Copyright assigned to U.S. Government, 1994.
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.OARcorp.com/rtems/license.html.
*
* MVME147 port for TNI - Telecom Bretagne
* by Dominique LE CAMPION (Dominique.LECAMPION@enst-bretagne.fr)
* May 1996
*
* $Id$
*/
#include <bsp.h>
#include <rtems/libio.h>
#include <libcsupport.h>
#include <string.h>
#ifdef STACK_CHECKER_ON
#include <stackchk.h>
#endif
/*
* The original table from the application and our copy of it with
* some changes.
*/
extern rtems_configuration_table Configuration;
rtems_configuration_table BSP_Configuration;
rtems_cpu_table Cpu_table;
char *rtems_progname;
/* Initialize whatever libc we are using
* called from postdriver hook
*/
void bsp_libc_init()
{
extern int end;
rtems_unsigned32 heap_start;
heap_start = (rtems_unsigned32) &end;
if (heap_start & (CPU_ALIGNMENT-1))
heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1);
RTEMS_Malloc_Initialize((void *) heap_start, 64 * 1024, 0);
/*
* Init the RTEMS libio facility to provide UNIX-like system
* calls for use by newlib (ie: provide __rtems_open, __rtems_close, etc)
* Uses malloc() to get area for the iops, so must be after malloc init
*/
rtems_libio_init();
/*
* Set up for the libc handling.
*/
if (BSP_Configuration.ticks_per_timeslice > 0)
libc_init(1); /* reentrant if possible */
else
libc_init(0); /* non-reentrant */
}
/*
* Function: bsp_pretasking_hook
* Created: 95/03/10
*
* Description:
* BSP pretasking hook. Called just before drivers are initialized.
* Used to setup libc and install any BSP extensions.
*
* NOTES:
* Must not use libc (to do io) from here, since drivers are
* not yet initialized.
*
*/
void
bsp_pretasking_hook(void)
{
bsp_libc_init();
#ifdef STACK_CHECKER_ON
/*
* Initialize the stack bounds checker
* We can either turn it on here or from the app.
*/
Stack_check_Initialize();
#endif
#ifdef RTEMS_DEBUG
rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );
#endif
}
/*
* Use the shared bsp_postdriver_hook() implementation
*/
void bsp_postdriver_hook(void);
void bsp_start( void )
{
m68k_isr_entry *monitors_vector_table;
int index;
rtems_unsigned8 node_number;
monitors_vector_table = (m68k_isr_entry *)0; /* 147Bug Vectors are at 0 */
m68k_set_vbr( monitors_vector_table );
for ( index=2 ; index<=255 ; index++ )
M68Kvec[ index ] = monitors_vector_table[ 32 ];
M68Kvec[ 2 ] = monitors_vector_table[ 2 ]; /* bus error vector */
M68Kvec[ 4 ] = monitors_vector_table[ 4 ]; /* breakpoints vector */
M68Kvec[ 9 ] = monitors_vector_table[ 9 ]; /* trace vector */
M68Kvec[ 47 ] = monitors_vector_table[ 47 ]; /* system call vector */
m68k_set_vbr( &M68Kvec );
pcc->int_base_vector = PCC_BASE_VECTOR & 0xF0;
/* Set the PCC int vectors base */
/* VME shared memory configuration */
/* Only the first node shares its top 128k DRAM */
vme_lcsr->utility_interrupt_vector = VME_BASE_VECTOR & 0xF8;
/* Set VMEchip base interrupt vector */
vme_lcsr->utility_interrupt_mask |= 0x02;
/* Enable SIGLP interruption (see shm support) */
pcc->general_purpose_control &= 0x10;
/* Enable VME master interruptions */
if (vme_lcsr->system_controller & 0x01) {
/* the board is system controller */
vme_lcsr->system_controller = 0x08;
/* Make VME access round-robin */
}
node_number =
(rtems_unsigned8)
(Configuration.User_multiprocessing_table->node - 1) & 0xF;
/* Get and store node ID, first node_number = 0 */
vme_gcsr->board_identification = node_number;
vme_lcsr->gcsr_base_address = node_number;
/* Setup the base address of this board's gcsr */
vme_lcsr->timer_configuration = 0x6a;
/* Enable VME time outs, maximum periods */
if (node_number == 0) {
pcc->slave_base_address = 0x01;
/* Set local DRAM base address on the VME bus to the DRAM size */
vme_lcsr->vme_bus_requester = 0x80;
while (! (vme_lcsr->vme_bus_requester & 0x40));
/* Get VMEbus mastership */
vme_lcsr->slave_address_modifier = 0xfb;
/* Share everything */
vme_lcsr->slave_configuration = 0x80;
/* Share local DRAM */
vme_lcsr->vme_bus_requester = 0x0;
/* release bus */
} else {
pcc->slave_base_address = 0;
/* Set local DRAM base address on the VME bus to 0 */
vme_lcsr->vme_bus_requester = 0x80;
while (! (vme_lcsr->vme_bus_requester & 0x40));
/* Get VMEbus mastership */
vme_lcsr->slave_address_modifier = 0x08;
/* Share only the short adress range */
vme_lcsr->slave_configuration = 0;
/* Don't share local DRAM */
vme_lcsr->vme_bus_requester = 0x0;
/* release bus */
}
vme_lcsr->master_address_modifier = 0;
/* Automatically set the address modifier */
vme_lcsr->master_configuration = 1;
/* Disable D32 transfers : they don't work on my VMEbus rack */
m68k_enable_caching();
/*
* we only use a hook to get the C library initialized.
*/
Cpu_table.pretasking_hook = bsp_pretasking_hook; /* init libc, etc. */
Cpu_table.predriver_hook = NULL;
Cpu_table.postdriver_hook = bsp_postdriver_hook;
Cpu_table.idle_task = NULL; /* do not override system IDLE task */
Cpu_table.do_zero_of_workspace = TRUE;
Cpu_table.interrupt_vector_table = (m68k_isr_entry *) &M68Kvec;
Cpu_table.interrupt_stack_size = 4096;
Cpu_table.extra_mpci_receive_server_stack = 0;
/*
* Copy the table
*/
BSP_Configuration = Configuration;
BSP_Configuration.work_space_start = (void *)
(RAM_END - BSP_Configuration.work_space_size);
/*
* Add 1 region for the RTEMS Malloc
*/
BSP_Configuration.RTEMS_api_configuration->maximum_regions++;
/*
* Add 1 extension for newlib libc
*/
#ifdef RTEMS_NEWLIB
BSP_Configuration.maximum_extensions++;
#endif
/*
* Add another extension if using the stack checker
*/
#ifdef STACK_CHECKER_ON
BSP_Configuration.maximum_extensions++;
#endif
/*
* Tell libio how many fd's we want and allow it to tweak config
*/
rtems_libio_config(&BSP_Configuration, BSP_LIBIO_MAX_FDS);
}
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