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//==========================================================================
//
// hal_boot.c
//
// SPARC Architecture specific interrupt dispatch tables
//
//==========================================================================
// ####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
//
// eCos is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 2 or (at your option) any later
// version.
//
// eCos is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
// for more details.
//
// You should have received a copy of the GNU General Public License
// along with eCos; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
// As a special exception, if other files instantiate templates or use
// macros or inline functions from this file, or you compile this file
// and link it with other works to produce a work based on this file,
// this file does not by itself cause the resulting work to be covered by
// the GNU General Public License. However the source code for this file
// must still be made available in accordance with section (3) of the GNU
// General Public License v2.
//
// This exception does not invalidate any other reasons why a work based
// on this file might be covered by the GNU General Public License.
// -------------------------------------------
// ####ECOSGPLCOPYRIGHTEND####
//==========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s): hmt
// Contributors: hmt
// Date: 1998-12-10
// Purpose: Interrupt handler tables for SPARC.
//
//####DESCRIPTIONEND####
//
//==========================================================================
#include <pkgconf/hal.h>
#include <cyg/infra/cyg_type.h>
/*------------------------------------------------------------------------*/
/* calling this is our raison d'etre: */
extern void cyg_start( void );
/*------------------------------------------------------------------------*/
/* data copy and bss zero functions */
typedef void (CYG_ROM_ADDRESS)(void);
#ifdef CYG_HAL_STARTUP_ROM
void hal_copy_data(void)
{
extern char __ram_data_start;
extern char __ram_data_end;
extern CYG_ROM_ADDRESS __rom_data_start;
long *p = (long *)&__ram_data_start;
long *q = (long *)&__rom_data_start;
while( p <= (long *)&__ram_data_end )
*p++ = *q++;
}
#endif
void hal_zero_bss(void)
{
extern CYG_ROM_ADDRESS __bss_start;
extern CYG_ROM_ADDRESS __bss_end;
register long long zero = 0;
register long long *end = (long long *)&__bss_end;
register long long *p = (long long *)&__bss_start;
while( p <= end )
*p++ = zero;
}
#ifdef CYGSEM_HAL_STOP_CONSTRUCTORS_ON_FLAG
cyg_bool cyg_hal_stop_constructors;
#endif
void
cyg_hal_invoke_constructors (void)
{
typedef void (*pfunc) (void);
extern pfunc __CTOR_LIST__[];
extern pfunc __CTOR_END__[];
#ifdef CYGSEM_HAL_STOP_CONSTRUCTORS_ON_FLAG
static pfunc *p = &__CTOR_END__[-1];
cyg_hal_stop_constructors = 0;
for (; p >= __CTOR_LIST__; p--) {
(*p) ();
if (cyg_hal_stop_constructors) {
p--;
break;
}
}
#else
pfunc *p;
for (p = &__CTOR_END__[-1]; p >= __CTOR_LIST__; p--)
(*p) ();
#endif
}
// Override any __gccmain the compiler might generate. We don't want
// constructors to be called twice.
void __gccmain(void) {}
/*------------------------------------------------------------------------*/
/* CYG_HAL_START - pre-main-entrypoint */
#ifdef CYGPKG_HAL_SPARCLITE_SLEB
#define SLEB_LED (*(volatile char *)(0x02000003))
#define LED( _x_ ) SLEB_LED = (char)(0xff & ~(_x_))
#else
#define LED( _x_ ) CYG_EMPTY_STATEMENT
#endif
extern void hal_board_prestart( void );
extern void hal_board_poststart( void );
// This is called with traps enabled, but interrupts masked out:
// Be sure to enable them in hal_board_poststart() at the latest.
void cyg_hal_start( void )
{
/* Board specific prestart that's best done in C */
hal_board_prestart();
LED( 0xd0 );
#ifdef CYG_HAL_STARTUP_ROM
/* Copy data from ROM to RAM */
hal_copy_data();
#endif
LED( 0xd4 );
/* Zero BSS */
hal_zero_bss();
LED( 0xd8 );
/* Call constructors */
cyg_hal_invoke_constructors();
LED( 0xdc );
/* Board specific late startup that's best done in C */
hal_board_poststart();
LED( 0xf8 );
/* Call cyg_start */
cyg_start(); /* does not return */
}
// EOF hal_boot.c
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