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/*
* A simple main which can be used on any embedded target.
*
* This style of initialization insures that the C++ global
* constructors are executed after RTEMS is initialized.
*
* Thanks to Chris Johns <cjohns@plessey.com.au> for this idea.
*
* COPYRIGHT (c) 1989-1999.
* On-Line Applications Research Corporation (OAR).
*
* 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.
*
* $Id$
*/
#include <bsp.h>
#ifdef USE_INIT_FINI
#include <stdlib.h> /* for atexit() */
#endif
extern void bsp_start( void );
extern void bsp_cleanup( void );
extern rtems_configuration_table Configuration;
extern rtems_configuration_table BSP_Configuration;
extern rtems_cpu_table Cpu_table;
rtems_api_configuration_table BSP_RTEMS_Configuration;
#ifdef RTEMS_POSIX_API
posix_api_configuration_table BSP_POSIX_Configuration;
#endif
/* Initialize C++ global Ctor/Dtor and initializes exception handling. */
#if defined(USE_INIT_FINI)
extern void _fini( void );
#endif
rtems_interrupt_level bsp_isr_level;
/*
* Since there is a forward reference
*/
int c_rtems_main(int argc, char **argv, char **envp);
int boot_card(int argc, char **argv, char **envp)
{
int status;
static char *argv_pointer = NULL;
static char *envp_pointer = NULL;
char **argv_p = &argv_pointer;
char **envp_p = &envp_pointer;
/*
* Set things up so c_rtems_main() is called with real pointers for
* argv and envp. If the BSP has passed us something useful, then
* pass it on. Somehow we need to eventually make this available to
* a real main() in user land. :)
*/
if ( argv )
argv_p = argv;
if ( envp )
envp_p = envp;
/*
* Set default values for the CPU Table fields all ports must have.
* These values can be overridden in bsp_start() but they are
* right most of the time.
*/
Cpu_table.pretasking_hook = NULL;
Cpu_table.predriver_hook = NULL;
Cpu_table.postdriver_hook = NULL;
Cpu_table.idle_task = NULL;
Cpu_table.do_zero_of_workspace = TRUE;
Cpu_table.interrupt_stack_size = RTEMS_MINIMUM_STACK_SIZE;
Cpu_table.extra_mpci_receive_server_stack = 0;
Cpu_table.stack_allocate_hook = NULL;
Cpu_table.stack_free_hook = NULL;
/*
* Copy the configuration table so we and the BSP wants to change it.
*/
BSP_Configuration = Configuration;
BSP_RTEMS_Configuration = *Configuration.RTEMS_api_configuration;
BSP_Configuration.RTEMS_api_configuration = &BSP_RTEMS_Configuration;
#ifdef RTEMS_POSIX_API
BSP_POSIX_Configuration = *Configuration.POSIX_api_configuration;
BSP_Configuration.POSIX_api_configuration = &BSP_POSIX_Configuration;
#endif
/*
* The atexit hook will be before the static destructor list's entry
* point.
*/
bsp_start();
/*
* Initialize RTEMS but do NOT start multitasking.
*/
bsp_isr_level =
rtems_initialize_executive_early( &BSP_Configuration, &Cpu_table );
/*
* Call c_rtems_main() and eventually let the first task or the real
* main() invoke the global constructors if there are any.
*/
#ifdef USE_INIT_FINI
atexit( _fini );
#endif
status = c_rtems_main( argc, argv_p, envp_p );
/*
* Perform any BSP specific shutdown actions.
*/
bsp_cleanup();
/*
* Now return to the start code.
*/
return status;
}
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