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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [lib/] [libbsp/] [shared/] [bootcard.c] - Rev 318
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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: bootcard.c,v 1.2 2001-09-27 12:01:12 chris Exp $ */ #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 ); extern void _init( void ); #endif rtems_interrupt_level bsp_isr_level; /* * Since there is a forward reference */ int 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 main is called with real pointers for argv and envp. * If the BSP has passed us something useful, then pass it on. */ 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 main() and get the global constructors invoked if there * are any. */ #ifdef USE_INIT_FINI atexit( _fini ); _init(); #endif status = 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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