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/*
* bsp_pretasking_hook().
* Initializes the heap, libc and VME.
*
* COPYRIGHT (c) 1989-1998.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*
* Modified to support the MCP750.
* Modifications Copyright (C) 1999 Eric Valette. valette@crf.canon.fr
*
* $Id$
*/
#include <string.h>
#include <bsp.h>
#include <bsp/consoleIo.h>
#ifndef BSP_HAS_NO_VME
#include <bsp/VME.h>
#endif
void bsp_libc_init( void *, uint32_t, int );
/*
* 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)
{
uint32_t heap_size;
uint32_t heap_sbrk_spared;
extern uint32_t _bsp_sbrk_init(uint32_t, uint32_t*);
extern void BSP_vme_config();
/* make sure it's properly aligned */
BSP_heap_start = (BSP_heap_start + CPU_ALIGNMENT - 1) & ~(CPU_ALIGNMENT-1);
heap_size = (BSP_mem_size - BSP_heap_start) - BSP_Configuration.work_space_size;
heap_sbrk_spared=_bsp_sbrk_init(BSP_heap_start, &heap_size);
#ifdef SHOW_MORE_INIT_SETTINGS
printk( "HEAP start %x size %x (%x bytes spared for sbrk)\n",
BSP_heap_start, heap_size, heap_sbrk_spared);
#endif
bsp_libc_init((void *) 0, heap_size, heap_sbrk_spared);
/* Note that VME support may be omitted also by
* providing a NULL BSP_vme_config routine
* (e.g., linker script)
*/
#ifndef BSP_HAS_NO_VME
/*
* Initialize VME bridge - needs working PCI
* and IRQ subsystems...
*
* NOTE: vmeUniverse driver now uses shared interrupts.
* this requires workspace which is not available
* from bspstart()...
*/
#ifdef SHOW_MORE_INIT_SETTINGS
printk("Going to initialize VME bridge\n");
#endif
if ( BSP_vme_config )
BSP_vme_config();
#endif
#ifdef RTEMS_DEBUG
rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );
#endif
}
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