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[/] [or1k/] [trunk/] [rtems-20020807/] [c/] [src/] [lib/] [libbsp/] [sh/] [gensh2/] [startup/] [bspstart.c] - Blame information for rev 1026

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1 1026 ivang
/*
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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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 *  Authors: Ralf Corsepius (corsepiu@faw.uni-ulm.de) and
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 *           Bernd Becker (becker@faw.uni-ulm.de)
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 *
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 *  COPYRIGHT (c) 1997-1998, FAW Ulm, Germany
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 *
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 *  This program is distributed in the hope that it will be useful,
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 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
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 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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 *
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 *
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 *  COPYRIGHT (c) 1998.
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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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 *  bspstart.c,v 1.6 2001/10/12 21:05:26 joel Exp
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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 void bsp_hw_init(void);
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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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 *
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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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    bsp_libc_init(&HeapStart, sizeof(unsigned32) * (&HeapEnd - &HeapStart), 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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     For real boards you need to setup the hardware
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     and need to copy the vector table from rom to ram.
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     Depending on the board this can ether be done from inside the rom
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     startup code, rtems startup code or here.
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   */
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#ifndef START_HW_INIT
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  /* board hardware setup here, or from 'start.S' */
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  bsp_hw_init();
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#endif
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  /*
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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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   *  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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   *  of work space from the last physical address on the CPU board.
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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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   *  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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   */
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  BSP_Configuration.work_space_start = (void *) &WorkSpaceStart ;
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  BSP_Configuration.work_space_size  =
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    (unsigned32) &WorkSpaceEnd -
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    (unsigned32) &WorkSpaceStart ;
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  /*
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   *  initialize the CPU table for this BSP
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   */
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#if ( CPU_ALLOCATE_INTERRUPT_STACK == FALSE )
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  _CPU_Interrupt_stack_low = &CPU_Interrupt_stack_low ;
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  _CPU_Interrupt_stack_high = &CPU_Interrupt_stack_high ;
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  /* This isn't used anywhere */
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  Cpu_table.interrupt_stack_size =
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    (unsigned32) (&CPU_Interrupt_stack_high) -
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    (unsigned32) (&CPU_Interrupt_stack_low) ;
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#endif
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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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#if ( CPU_ALLOCATE_INTERRUPT_STACK == TRUE )
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  Cpu_table.interrupt_stack_size = CONFIGURE_INTERRUPT_STACK_MEMORY;
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#endif
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  Cpu_table.clicks_per_second = CPU_CLOCK_RATE_HZ ;
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}

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