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/*
* 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.
*
* COPYRIGHT (c) 2005-2006 Kolja Waschk rtemsdev/ixo.de
* Derived from no_cpu/no_bsp/startup/bspstart.c 1.23.
* COPYRIGHT (c) 1989-1999.
* 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.
*
* $Id$
*/
#include <string.h>
#include <bsp.h>
#include <rtems/libio.h>
#include <rtems/libcsupport.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;
/*
* Use the shared implementations of the following routines
*/
extern void bsp_postdriver_hook(void);
extern void bsp_libc_init( void *, uint32_t, int );
extern rtems_configuration_table BSP_Configuration;
#if 0
extern char _RAMBase[];
extern char _RAMSize[];
extern char _WorkspaceBase[];
extern char _HeapSize[];
#else
extern char __alt_heap_start[];
#endif
/*
* 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)
{
unsigned long heapStart;
#if 0
unsigned long heapSize = (unsigned long)_HeapSize;
#endif
unsigned long ramSpace;
heapStart = (unsigned long)BSP_Configuration.work_space_start
+ BSP_Configuration.work_space_size;
if (heapStart & (CPU_ALIGNMENT-1))
heapStart = (heapStart + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1);
#if 0
ramSpace = (unsigned long)_RAMBase + (unsigned long)_RAMSize - heapStart;
#else
#if 0
ramSpace = SRAM_0_BASE
+ (SRAM_0_SRAM_MEMORY_SIZE * SRAM_0_SRAM_MEMORY_UNITS)
- heapStart;
#else
ramSpace = RAM_BASE + RAM_BYTES - heapStart;
#endif
#endif
/* TODO */
ramSpace -= 16384; /* Space for initial stack, not to be zeroed */
#if 0
if (heapSize < 10)
heapSize = ramSpace;
else if (heapSize > ramSpace)
rtems_fatal_error_occurred (('H'<<24) | ('E'<<16) | ('A'<<8) | 'P');
bsp_libc_init((void *)heapStart, heapSize, 0);
#else
bsp_libc_init((void *)heapStart, ramSpace, 0);
#endif
#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 )
{
/* Fixed */
BSP_Configuration.microseconds_per_tick = 1000;
/*
* 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".
*/
#if 0
BSP_Configuration.work_space_start = (void *)_WorkspaceBase;
#else
BSP_Configuration.work_space_start = (void *)__alt_heap_start;
#endif
/*
* initialize the CPU table for this BSP
*/
Cpu_table.pretasking_hook = bsp_pretasking_hook; /* init libc, etc. */
Cpu_table.postdriver_hook = bsp_postdriver_hook;
Cpu_table.interrupt_stack_size = CONFIGURE_INTERRUPT_STACK_MEMORY;
}
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