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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) 2001.
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* Ralf Corsepius (corsepiu@faw.uni-ulm.de).
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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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* COPYRIGHT (c) 2001.
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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 1.2 2001/05/11 16:51:25 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 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 either 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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/*
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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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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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