/* bsp_start()
*
* This routine starts the application. It includes application,
* board, and monitor specific initialization and configuration.
* The generic CPU dependent initialization has been performed
* before this routine is invoked.
*
* INPUT: NONE
*
* OUTPUT: NONE
*
* Author: Thomas Doerfler <td@imd.m.isar.de>
* IMD Ingenieurbuero fuer Microcomputertechnik
*
* COPYRIGHT (c) 1998 by IMD
*
* Changes from IMD are covered by the original distributions terms.
* This file has been derived from the papyrus BSP:
*
* Author: Andrew Bray <andy@i-cubed.co.uk>
*
* COPYRIGHT (c) 1995 by i-cubed ltd.
*
* To anyone who acknowledges that this file is provided "AS IS"
* without any express or implied warranty:
* permission to use, copy, modify, and distribute this file
* for any purpose is hereby granted without fee, provided that
* the above copyright notice and this notice appears in all
* copies, and that the name of i-cubed limited not be used in
* advertising or publicity pertaining to distribution of the
* software without specific, written prior permission.
* i-cubed limited makes no representations about the suitability
* of this software for any purpose.
*
* Modifications for spooling console driver and control of memory layout
* with linker command file by
* Thomas Doerfler <td@imd.m.isar.de>
* for these modifications:
* COPYRIGHT (c) 1997 by IMD, Puchheim, Germany.
*
* To anyone who acknowledges that this file is provided "AS IS"
* without any express or implied warranty:
* permission to use, copy, modify, and distribute this file
* for any purpose is hereby granted without fee, provided that
* the above copyright notice and this notice appears in all
* copies. IMD makes no representations about the suitability
* of this software for any purpose.
*
* Derived from c/src/lib/libbsp/no_cpu/no_bsp/startup/bspstart.c:
*
* COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994.
* On-Line Applications Research Corporation (OAR).
*
* Modifications for PPC405GP by Dennis Ehlin
*
* $Id$
*/
#include <string.h>
#include <fcntl.h>
#include <bsp.h>
#include <bsp/irq.h>
#include <rtems/bspIo.h>
#include <libcpu/cpuIdent.h>
#include <libcpu/spr.h>
#include <rtems/powerpc/powerpc.h>
#include RTEMS_XPARAMETERS_H
#include <stdio.h>
uint32_t _heap_start;
uint32_t _heap_end;
uint32_t _top_of_ram;
/*
* Driver configuration parameters
*/
uint32_t bsp_clicks_per_usec;
uint32_t bsp_serial_per_sec; /* Serial clocks per second */
bool bsp_serial_external_clock;
bool bsp_serial_xon_xoff;
bool bsp_serial_cts_rts;
uint32_t bsp_serial_rate;
uint32_t bsp_timer_average_overhead; /* Average overhead of timer in ticks */
uint32_t bsp_timer_least_valid; /* Least valid number from timer */
bool bsp_timer_internal_clock; /* TRUE, when timer runs with CPU clk */
extern unsigned char IntrStack_start[];
extern unsigned char IntrStack_end[];
/* Initialize whatever libc we are using
* called from postdriver hook
*/
void bsp_XAssertHandler(const char* file, int line);
void bsp_XAssertHandler(const char* file, int line) {
printf("\n***\n*** XAssert Failed! File: %s, Line: %d\n***\n", file, line);
}
/*
* bsp_start
*
* This routine does the bulk of the system initialization.
*/
void bsp_start( void )
{
rtems_status_code sc = RTEMS_SUCCESSFUL;
ppc_cpu_id_t myCpu;
ppc_cpu_revision_t myCpuRevision;
/*
* Get CPU identification dynamically. Note that the get_ppc_cpu_type()
* function store the result in global variables
* so that it can be used latter...
*/
myCpu = get_ppc_cpu_type();
myCpuRevision = get_ppc_cpu_revision();
/*
* initialize the device driver parameters
*/
/* timebase register ticks/microsecond */
bsp_clicks_per_usec = (250000000 / 1000000);
bsp_serial_per_sec = 14625000;
bsp_serial_external_clock = false;
bsp_timer_internal_clock = true;
bsp_serial_xon_xoff = false;
bsp_serial_cts_rts = false;
bsp_serial_rate = 115200;
bsp_timer_average_overhead = 2;
bsp_timer_least_valid = 3;
/*
* Initialize default raw exception handlers.
*/
sc = ppc_exc_initialize(
PPC_INTERRUPT_DISABLE_MASK_DEFAULT,
(uint32_t)IntrStack_start,
IntrStack_end - IntrStack_start
);
if (sc != RTEMS_SUCCESSFUL) {
BSP_panic("cannot initialize exceptions");
}
/*
* Install our own set of exception vectors
*/
BSP_rtems_irq_mng_init(0);
}
void BSP_ask_for_reset(void)
{
printk("system stopped, press RESET");
while(1) {};
}
void BSP_panic(char *s)
{
printk("%s PANIC %s\n",_RTEMS_version, s);
BSP_ask_for_reset();
}
void _BSP_Fatal_error(unsigned int v)
{
printk("%s PANIC ERROR %x\n",_RTEMS_version, v);
BSP_ask_for_reset();
}
