/* 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).
* All rights assigned to U.S. Government, 1994.
*
* This material may be reproduced by or for the U.S. Government pursuant
* to the copyright license under the clause at DFARS 252.227-7013. This
* notice must appear in all copies of this file and its derivatives.
*
* Modifications for PPC405GP by Dennis Ehlin
*
* $Id$
*/
#include <string.h>
#include <fcntl.h>
#include <bsp.h>
#include <rtems/libio.h>
#include <rtems/libcsupport.h>
#include <ictrl.h>
/*
* The original table from the application and our copy of it with
* some changes.
*/
extern rtems_configuration_table Configuration;
rtems_configuration_table BSP_Configuration;
rtems_cpu_table Cpu_table;
char *rtems_progname;
void *bsp_ram_end = (void *)RAM_END; /* first addr behind avail. ram area */
/* Initialize whatever libc we are using
* called from postdriver hook
*/
void bsp_postdriver_hook(void);
void bsp_libc_init( void *, unsigned32, int );
/*
*
* bsp_predriver_hook
*
* Before drivers are setup.
*/
void bsp_predriver_hook(void)
{
rtems_status_code status;
/* init the PPC405 external interrupt controller handler... */
status = ictrl_init();
}
/*
* Function: bsp_pretasking_hook
* Created: 95/03/10
*
* Description:
* BSP pretasking hook. Called just before drivers are initialized.
* Used to setup libc and install any BSP extensions.
*
* NOTES:
* Must not use libc (to do io) from here, since drivers are
* not yet initialized.
*
*/
void bsp_pretasking_hook(void)
{
extern int _end;
extern int _heap_end;
rtems_unsigned32 heap_start;
rtems_unsigned32 heap_size;
rtems_unsigned32 heap_end;
heap_start = (rtems_unsigned32) &_end;
if (heap_start & (CPU_ALIGNMENT-1))
heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1);
heap_end = (rtems_unsigned32) &_heap_end;
if (heap_end & (CPU_ALIGNMENT-1))
heap_end = (heap_end + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1);
heap_size = heap_end - heap_start;
bsp_libc_init((void *) heap_start, heap_size, 0); /* 64 * 1024 */
#ifdef RTEMS_DEBUG
rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );
#endif
}
/*
* bsp_start
*
* This routine does the bulk of the system initialization.
*/
void bsp_start( void )
{
/*
* Allocate the memory for the RTEMS Work Space. This can come from
* a variety of places: hard coded address, malloc'ed from outside
* RTEMS world (e.g. simulator or primitive memory manager), or (as
* typically done by stock BSPs) by subtracting the required amount
* of work space from the last physical address on the CPU board.
*/
/*
* Need to "allocate" the memory for the RTEMS Workspace and
* tell the RTEMS configuration where it is. This memory is
* not malloc'ed. It is just "pulled from the air".
*/
/* FIME: plan usage of RAM better:
- make top of ram dynamic,
- take out some part for persistant log
- make rest of ram to heap...
-remove RAM_END from bsp.h, this cannot be valid...
or must be a function call
*/
BSP_Configuration.work_space_start = (void *)
((char *)(bsp_ram_end)) - BSP_Configuration.work_space_size;
/*
* initialize the CPU table for this BSP
*/
Cpu_table.pretasking_hook = bsp_pretasking_hook; /* init libc, etc. */
Cpu_table.predriver_hook = bsp_predriver_hook;
Cpu_table.postdriver_hook = bsp_postdriver_hook;
Cpu_table.interrupt_stack_size = CONFIGURE_INTERRUPT_STACK_MEMORY;
Cpu_table.clicks_per_usec = 300;
Cpu_table.serial_per_sec = 14625000; /* = (CPU Clock / UART Internal Clock Divisor) */
Cpu_table.serial_external_clock = 0;
Cpu_table.timer_internal_clock = 1;
Cpu_table.serial_xon_xoff = 0;
Cpu_table.serial_cts_rts = 1;
Cpu_table.serial_rate = 115200;
Cpu_table.timer_average_overhead = 2;
Cpu_table.timer_least_valid = 3;
Cpu_table.exceptions_in_RAM = TRUE;
}
