edb7312/start/bspstart.c

0001 /*
0002  * Cirrus EP7312 Startup code
0003  */
0004
0005 /*
0006  * Copyright (c) 2002 by Jay Monkman <jtm@smoothsmoothie.com>
0007  *
0008  *  The license and distribution terms for this file may be
0009  *  found in the file LICENSE in this distribution or at
0010  *  http://www.rtems.org/license/LICENSE.
0011  */
0012
0013 #include <bsp.h>
0014 #include <bsp/irq-generic.h>
0015 #include <ep7312.h>
0016 #include <uart.h>
0017
0018 /*
0019  * NAME: bsp_start_default - BSP initialization function
0020  *
0021  *   This function is called before RTEMS is initialized
0022  *   This function also configures the CPU's memory protection unit.
0023  *
0024  *
0025  * RESTRICTIONS/LIMITATIONS:
0026  *   Since RTEMS is not configured, no RTEMS functions can be called.
0027  *
0028  */
0029 static void bsp_start_default( void )
0030 {
0031   /* disable interrupts */
0032   *EP7312_INTMR1 = 0;
0033   *EP7312_INTMR2 = 0;
0034
0035   /*
0036    * Init rtems interrupt management
0037    */
0038   bsp_interrupt_initialize();
0039 } /* bsp_start */
0040
0041 /*
0042  *  By making this a weak alias for bsp_start_default, a brave soul
0043  *  can override the actual bsp_start routine used.
0044  */
0045 void bsp_start (void) __attribute__ ((weak, alias("bsp_start_default")));