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[/] [openrisc/] [trunk/] [rtos/] [ecos-2.0/] [packages/] [hal/] [sparclite/] [arch/] [v2_0/] [src/] [hal_boot.c] - Rev 454
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//========================================================================== // // hal_boot.c // // SPARClite Architecture specific interrupt dispatch tables // //========================================================================== //####ECOSGPLCOPYRIGHTBEGIN#### // ------------------------------------------- // This file is part of eCos, the Embedded Configurable Operating System. // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, 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., // 59 Temple Place, Suite 330, Boston, MA 02111-1307 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. // // This exception does not invalidate any other reasons why a work based on // this file might be covered by the GNU General Public License. // // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc. // at http://sources.redhat.com/ecos/ecos-license/ // ------------------------------------------- //####ECOSGPLCOPYRIGHTEND#### //========================================================================== //#####DESCRIPTIONBEGIN#### // // Author(s): hmt // Contributors: hmt // Date: 1998-12-10 // Purpose: Interrupt handler tables for SPARClite. // //####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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