forked from Imagelibrary/rtems
db3ca1f596
* startup/bspstart.c, startup/linkcmds: Per PR247 , fix the linkcmds to avoid overlapping sections and reworked the way the heap and workspace are calculated.
101 lines
2.4 KiB
C
101 lines
2.4 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.OARcorp.com/rtems/license.html.
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*
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* $Id$
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*/
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#include <string.h>
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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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char *rtems_progname;
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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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void *heapStart;
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unsigned long heapSize;
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unsigned long ramSpace;
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extern int WorkspaceBase;
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heapStart = (void *)
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((unsigned long)&WorkspaceBase + BSP_Configuration.work_space_size);
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if ( (unsigned long) heapStart > (256 * 1024) )
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rtems_fatal_error_occurred (('H'<<24) | ('E'<<16) | ('A'<<8) | 'P');
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heapSize = (256 * 1024) - (unsigned long)(heapStart);
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bsp_libc_init(heapStart, heapSize, 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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extern int WorkspaceBase;
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/* Configure Number of Register Caches */
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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_stack_size = 4096;
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/*
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if ( BSP_Configuration.work_space_size >(512*1024) )
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_sys_exit( 1 );
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*/
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BSP_Configuration.work_space_start = (void *) &WorkspaceBase;
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}
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H8BD_Install_IRQ() {}
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