/* * (C) Copyright 2002 * Sysgo Real-Time Solutions, GmbH <www.elinos.com> * Marius Groeger <mgroeger@sysgo.de> * * See file CREDITS for list of people who contributed to this * project. * * This program 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 of * the License, or (at your option) any later version. * * This program 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 this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA */#include "armboot.h"#include "command.h"#include "devices.h"#include "version.h"#ifdef CONFIG_DRIVER_CS8900extern void cs8900_get_enetaddr(uchar *addr);#endif/* * Begin and End of memory area for malloc(), and current "brk" */static  ulong   mem_malloc_start = 0;static  ulong   mem_malloc_end   = 0;static  ulong   mem_malloc_brk   = 0; static void mem_malloc_init (ulong dest_addr){    mem_malloc_start  = dest_addr;    mem_malloc_end    = dest_addr + CONFIG_MALLOC_SIZE;    mem_malloc_brk    = mem_malloc_start;        memset ((void *)mem_malloc_start, 0, mem_malloc_end - mem_malloc_start);}void *sbrk (ptrdiff_t increment){    ulong old = mem_malloc_brk;    ulong new = old + increment;        if ((new < mem_malloc_start) ||	(new > mem_malloc_end) ) {	return (NULL);    }    mem_malloc_brk = new;        return ((void *)old);}/* * Breath some life into the board... * * Initialize an SMC for serial comms, and carry out some hardware * tests. * * The first part of initialization is running from Flash memory; * its main purpose is to initialize the RAM so that we * can relocate the monitor code to RAM. */void start_armboot(void){    bd_t bd;    ulong size;       /* set up bd strucuture */    memset(&bd, 0, sizeof(bd));    bd.bi_baudrate = CONFIG_BAUDRATE;    /* basic cpu dependent setup */    cpu_init(&bd);       /* basic board dependent setup */    board_init(&bd);    /* initialize environment */    env_init(&bd);    /* serial communications setup */    serial_init(&bd);    display_banner(&bd);    /* set up execptions */    interrupt_init(&bd);    /* configure available RAM banks */    dram_init(&bd);    display_dram_config(&bd);    /* configure available FLASH banks */    size = flash_init(&bd);    display_flash_config(&bd, size);    /* armboot_end is defined in the board-specific linker script */    mem_malloc_init(_armboot_real_end);    /* initialize environment */    env_relocate(&bd);    /* enable exceptions */    enable_interrupts();    #ifdef CONFIG_DRIVER_CS8900    if (!getenv(&bd,"ethaddr") ) {	cs8900_get_enetaddr(bd.bi_enetaddr);    }#endif        /* main_loop() can return to retry autoboot, if so just run it again. */    for (;;) {	main_loop(&bd);    }    /* NOTREACHED - no way out of command loop except booting */}void hang(void){	puts ("### ERROR ### Please RESET the board ###\n");	for (;;);}