forked from Imagelibrary/rtems
12bd47efc0
* clock/ckinit.c, include/bsp.h, startup/bspstart.c: Eliminate copies of the Configuration Table. Use the RTEMS provided accessor macros to obtain configuration fields.
122 lines
2.9 KiB
C
122 lines
2.9 KiB
C
/*
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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.rtems.com/license/LICENSE.
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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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* $Id$
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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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* Tells us where to put the workspace in case remote debugger is present.
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*/
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extern uint32_t 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 *, uint32_t, 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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uint32_t heap_start;
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uint32_t heap_size;
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heap_start = (uint32_t) &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 = 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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void rtems_irq_mngt_init();
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Configuration.work_space_start = (void *)
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RAM_END - rtems_configuration_get_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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Configuration.work_space_start );
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printk( "work_space_size = 0x%x\n",
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rtems_configuration_get_work_space_size() );
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printk( "microseconds_per_tick = 0x%x\n",
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rtems_configuration_get_microseconds_per_tick() );
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printk( "ticks_per_timeslice = 0x%x\n",
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rtems_configuration_get_ticks_per_timeslice() );
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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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