csb350/start/bspstart.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /**
0004  *  @file
0005  *
0006  *  This routine starts the application.  It includes application,
0007  *  board, and monitor specific initialization and configuration.
0008  *  The generic CPU dependent initialization has been performed
0009  *  before this routine is invoked.
0010  */
0011
0012 /*
0013  *  COPYRIGHT (c) 1989-2012.
0014  *  On-Line Applications Research Corporation (OAR).
0015  *
0016  * Redistribution and use in source and binary forms, with or without
0017  * modification, are permitted provided that the following conditions
0018  * are met:
0019  * 1. Redistributions of source code must retain the above copyright
0020  *    notice, this list of conditions and the following disclaimer.
0021  * 2. Redistributions in binary form must reproduce the above copyright
0022  *    notice, this list of conditions and the following disclaimer in the
0023  *    documentation and/or other materials provided with the distribution.
0024  *
0025  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0026  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0027  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0028  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0029  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0030  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0031  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0032  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0033  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0034  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0035  * POSSIBILITY OF SUCH DAMAGE.
0036  */
0037
0038 #include <string.h>
0039
0040 #include <bsp.h>
0041 #include <libcpu/au1x00.h>
0042 #include <libcpu/isr_entries.h>
0043 #include <bsp/irq-generic.h>
0044
0045 void bsp_start( void );
0046
0047 au1x00_uart_t *uart0 = (au1x00_uart_t *)AU1X00_UART0_ADDR;
0048 au1x00_uart_t *uart3 = (au1x00_uart_t *)AU1X00_UART3_ADDR;
0049
0050 /*
0051  *  bsp_start
0052  *
0053  *  This routine does the bulk of the system initialization.
0054  */
0055 void bsp_start( void )
0056 {
0057   unsigned int compare = 0;
0058
0059   mips_set_sr( 0x7f00 );  /* all interrupts unmasked but globally off */
0060                           /* depend on the IRC to take care of things */
0061   __asm__ volatile ("mtc0 %0, $11\n" :: "r" (compare));
0062   bsp_interrupt_initialize();
0063 }