shared/start/bspstart.c

0001 /*
0002  *  This routine does the bulk of the system initialization.
0003  */
0004
0005 /*
0006  *  COPYRIGHT (c) 2001.
0007  *  Ralf Corsepius (corsepiu@faw.uni-ulm.de).
0008  *
0009  *  This program is distributed in the hope that it will be useful,
0010  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
0011  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
0012  *
0013  *  COPYRIGHT (c) 2001.
0014  *  On-Line Applications Research Corporation (OAR).
0015  *
0016  *  The license and distribution terms for this file may be
0017  *  found in the file LICENSE in this distribution or at
0018  *  http://www.rtems.org/license/LICENSE.
0019  */
0020
0021 #include <bsp.h>
0022 #include <bsp/bootcard.h>
0023 #include <rtems/score/percpu.h>
0024
0025 uint32_t bsp_clicks_per_second;
0026
0027 #ifndef START_HW_INIT
0028   void bsp_hw_init(void);
0029 #endif
0030
0031 /*
0032  *  bsp_start
0033  *
0034  *  This routine does the bulk of the system initialization.
0035  */
0036 void bsp_start( void )
0037 {
0038   /*
0039    * For real boards you need to setup the hardware
0040    * and need to copy the vector table from rom to ram.
0041    *
0042    * Depending on the board this can either be done from inside the rom
0043    * startup code, rtems startup code or here.
0044    */
0045
0046   #ifndef START_HW_INIT
0047     /* board hardware setup here, or from 'start.S' */
0048     bsp_hw_init();
0049   #endif
0050
0051   /*
0052    *  initialize the device driver parameters
0053    */
0054   bsp_clicks_per_second = CPU_CLOCK_RATE_HZ;
0055 }