/*
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/*
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* This routine starts the application. It includes application,
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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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* board, and monitor specific initialization and configuration.
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* The generic CPU dependent initialization has been performed
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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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* before this routine is invoked.
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*
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*
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* COPYRIGHT (c) 1989-1999.
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* COPYRIGHT (c) 1989-1999.
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* On-Line Applications Research Corporation (OAR).
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* On-Line Applications Research Corporation (OAR).
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*
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*
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* The license and distribution terms for this file may be
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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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* 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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* http://www.OARcorp.com/rtems/license.html.
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*
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*
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* $Id: bspstart.c,v 1.2 2001-09-27 12:00:27 chris Exp $
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* $Id: bspstart.c,v 1.2 2001-09-27 12:00:27 chris Exp $
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*/
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*/
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#include <bsp.h>
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#include <bsp.h>
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#include <rtems/libio.h>
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#include <rtems/libio.h>
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#include <libcsupport.h>
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#include <libcsupport.h>
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#include <string.h>
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#include <string.h>
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/*
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/*
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* The original table from the application and our copy of it with
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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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* some changes.
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*/
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*/
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extern rtems_configuration_table Configuration;
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extern rtems_configuration_table Configuration;
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rtems_configuration_table BSP_Configuration;
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rtems_configuration_table BSP_Configuration;
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rtems_cpu_table Cpu_table;
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rtems_cpu_table Cpu_table;
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char *rtems_progname;
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char *rtems_progname;
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/*
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/*
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* Use the shared implementations of the following routines
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* Use the shared implementations of the following routines
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*/
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*/
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void bsp_postdriver_hook(void);
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void bsp_postdriver_hook(void);
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void bsp_libc_init( void *, unsigned32, int );
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void bsp_libc_init( void *, unsigned32, int );
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/*
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/*
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* Function: bsp_pretasking_hook
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* Function: bsp_pretasking_hook
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* Created: 95/03/10
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* Created: 95/03/10
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*
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*
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* Description:
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* Description:
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* BSP pretasking hook. Called just before drivers are initialized.
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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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* Used to setup libc and install any BSP extensions.
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*
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*
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* NOTES:
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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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* Must not use libc (to do io) from here, since drivers are
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* not yet initialized.
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* not yet initialized.
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*
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*
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*/
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*/
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void bsp_pretasking_hook(void)
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void bsp_pretasking_hook(void)
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{
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{
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extern int end;
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extern int end;
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rtems_unsigned32 heap_start;
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rtems_unsigned32 heap_start;
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heap_start = (rtems_unsigned32) &end;
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heap_start = (rtems_unsigned32) &end;
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if (heap_start & (CPU_ALIGNMENT-1))
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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_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1);
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bsp_libc_init((void *) heap_start, 64 * 1024, 0);
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bsp_libc_init((void *) heap_start, 64 * 1024, 0);
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#ifdef RTEMS_DEBUG
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#ifdef RTEMS_DEBUG
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rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );
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rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );
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#endif
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#endif
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}
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}
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/*
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/*
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* bsp_start
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* bsp_start
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*
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*
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* This routine does the bulk of the system initialization.
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* This routine does the bulk of the system initialization.
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*/
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*/
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void bsp_start( void )
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void bsp_start( void )
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{
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{
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/*
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/*
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* Allocate the memory for the RTEMS Work Space. This can come from
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* Allocate the memory for the RTEMS Work Space. This can come from
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* a variety of places: hard coded address, malloc'ed from outside
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* a variety of places: hard coded address, malloc'ed from outside
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* RTEMS world (e.g. simulator or primitive memory manager), or (as
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* RTEMS world (e.g. simulator or primitive memory manager), or (as
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* typically done by stock BSPs) by subtracting the required amount
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* typically done by stock BSPs) by subtracting the required amount
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* of work space from the last physical address on the CPU board.
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* of work space from the last physical address on the CPU board.
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*/
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*/
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/*
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/*
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* Need to "allocate" the memory for the RTEMS Workspace and
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* Need to "allocate" the memory for the RTEMS Workspace and
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* tell the RTEMS configuration where it is. This memory is
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* tell the RTEMS configuration where it is. This memory is
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* not malloc'ed. It is just "pulled from the air".
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* not malloc'ed. It is just "pulled from the air".
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*/
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*/
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BSP_Configuration.work_space_start = (void *) 0;
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BSP_Configuration.work_space_start = (void *) 0;
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/*
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/*
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* initialize the CPU table for this BSP
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* initialize the CPU table for this BSP
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*/
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*/
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Cpu_table.pretasking_hook = bsp_pretasking_hook; /* init libc, etc. */
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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.postdriver_hook = bsp_postdriver_hook;
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Cpu_table.interrupt_stack_size = CONFIGURE_INTERRUPT_STACK_MEMORY;
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Cpu_table.interrupt_stack_size = CONFIGURE_INTERRUPT_STACK_MEMORY;
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}
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}
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