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1026 |
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/*
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* This routine starts the application. It includes application,
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* board, and monitor specific initialization and configuration.
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* The generic CPU dependent initialization has been performed
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* before this routine is invoked.
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*
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* COPYRIGHT (c) 1989-1999.
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* On-Line Applications Research Corporation (OAR).
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.OARcorp.com/rtems/license.html.
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*
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* Ported to the i386ex and submitted by:
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*
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* Erik Ivanenko
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* University of Toronto
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* erik.ivanenko@utoronto.ca
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*
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* bspstart.c,v 1.5 2000/11/01 21:15:06 joel Exp
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*/
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void bsp_clean_up(void);
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#include <bsp.h>
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#include <rtems/libio.h>
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#include <rtems/libcsupport.h>
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/*
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* The original table from the application and our copy of it with
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* some changes.
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*/
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extern rtems_configuration_table Configuration;
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rtems_configuration_table BSP_Configuration;
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rtems_cpu_table Cpu_table;
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/*
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* Tells us where to put the workspace in case remote debugger is present.
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*/
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extern rtems_unsigned32 rdb_start;
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/*
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* Use the shared implementations of the following routines
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*/
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void bsp_postdriver_hook(void);
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void bsp_libc_init( void *, unsigned32, int );
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/*
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* Function: bsp_pretasking_hook
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* Created: 95/03/10
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*
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* Description:
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* BSP pretasking hook. Called just before drivers are initialized.
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* Used to setup libc and install any BSP extensions.
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*
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* NOTES:
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* Must not use libc (to do io) from here, since drivers are
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* not yet initialized.
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*
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*/
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void bsp_pretasking_hook(void)
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{
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extern int heap_bottom;
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rtems_unsigned32 heap_start;
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rtems_unsigned32 heap_size;
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heap_start = (rtems_unsigned32) &heap_bottom;
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if (heap_start & (CPU_ALIGNMENT-1))
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heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1);
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heap_size = BSP_Configuration.work_space_start -(void *) heap_start ;
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heap_size &= 0xfffffff0; /* keep it as a multiple of 16 bytes */
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bsp_libc_init((void *) heap_start, heap_size, 0);
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#ifdef RTEMS_DEBUG
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rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );
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#endif
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}
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/*
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* bsp_start
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*
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* This routine does the bulk of the system initialization.
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*/
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void bsp_start( void )
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{
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/*
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* we do not use the pretasking_hook.
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*/
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Cpu_table.pretasking_hook = bsp_pretasking_hook; /* init libc, etc. */
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Cpu_table.postdriver_hook = bsp_postdriver_hook;
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Cpu_table.interrupt_table_segment = get_ds();
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Cpu_table.interrupt_table_offset = (void *)Interrupt_descriptor_table;
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Cpu_table.interrupt_stack_size = CONFIGURE_INTERRUPT_STACK_MEMORY;
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BSP_Configuration.work_space_start = (void *)
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RAM_END - BSP_Configuration.work_space_size;
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/*
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* Init rtems_interrupt_management
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*/
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rtems_irq_mngt_init();
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/*
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* Init rtems exceptions management
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*/
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rtems_exception_init_mngt();
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/*
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* The following information is very useful when debugging.
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*/
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#ifdef BSP_DEBUG
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printk( "RAM_START = 0x%x\nRAM_END = 0x%x\n", RAM_START, RAM_END );
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printk( "work_space_start = 0x%x\n",
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BSP_Configuration.work_space_start );
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printk( "work_space_size = 0x%x\n",
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BSP_Configuration.work_space_size );
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printk( "maximum_extensions = 0x%x\n",
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BSP_Configuration.maximum_extensions );
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printk( "microseconds_per_tick = 0x%x\n",
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BSP_Configuration.microseconds_per_tick );
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printk( "ticks_per_timeslice = 0x%x\n",
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BSP_Configuration.ticks_per_timeslice );
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printk( "maximum_devices = 0x%x\n",
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BSP_Configuration.maximum_devices );
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printk( "number_of_device_drivers = 0x%x\n",
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BSP_Configuration.number_of_device_drivers );
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printk( "Device_driver_table = 0x%x\n",
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BSP_Configuration.Device_driver_table );
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/* printk( "_heap_size = 0x%x\n", _heap_size );
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printk( "_stack_size = 0x%x\n", _stack_size ); */
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#endif
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}
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void bsp_clean_up(void) {
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printk("bsp_cleanup called\n");
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}
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