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/*
* Copyright (C) 2004-2006 Atmel Corporation
*
* 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 <common.h>
#include <command.h>
#include <malloc.h>
#include <devices.h>
#include <version.h>
#include <net.h>
#include <asm/initcalls.h>
#include <asm/sections.h>
#ifndef CONFIG_IDENT_STRING
#define CONFIG_IDENT_STRING ""
#endif
DECLARE_GLOBAL_DATA_PTR;
const char version_string[] =
U_BOOT_VERSION " (" __DATE__ " - " __TIME__ ") " CONFIG_IDENT_STRING;
unsigned long monitor_flash_len;
/*
* Begin and end of memory area for malloc(), and current "brk"
*/
static unsigned long mem_malloc_start = 0;
static unsigned long mem_malloc_end = 0;
static unsigned long mem_malloc_brk = 0;
/* The malloc area is wherever the board wants it to be */
static void mem_malloc_init(void)
{
mem_malloc_start = CFG_MALLOC_START;
mem_malloc_end = CFG_MALLOC_END;
mem_malloc_brk = mem_malloc_start;
printf("malloc: Using memory from 0x%08lx to 0x%08lx\n",
mem_malloc_start, mem_malloc_end);
memset ((void *)mem_malloc_start, 0,
mem_malloc_end - mem_malloc_start);
}
void *sbrk(ptrdiff_t increment)
{
unsigned long old = mem_malloc_brk;
unsigned long new = old + increment;
if ((new < mem_malloc_start) || (new > mem_malloc_end))
return NULL;
mem_malloc_brk = new;
return ((void *)old);
}
static int init_baudrate(void)
{
char tmp[64];
int i;
i = getenv_r("baudrate", tmp, sizeof(tmp));
if (i > 0) {
gd->baudrate = simple_strtoul(tmp, NULL, 10);
} else {
gd->baudrate = CONFIG_BAUDRATE;
}
return 0;
}
static int display_banner (void)
{
printf ("\n\n%s\n\n", version_string);
printf ("U-Boot code: %p -> %p data: %p -> %p\n",
_text, _etext, _data, _end);
return 0;
}
void hang(void)
{
for (;;) ;
}
static int display_dram_config (void)
{
int i;
puts ("DRAM Configuration:\n");
for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
printf ("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
print_size (gd->bd->bi_dram[i].size, "\n");
}
return 0;
}
static void display_flash_config (void)
{
puts ("Flash: ");
print_size(gd->bd->bi_flashsize, " ");
printf("at address 0x%08lx\n", gd->bd->bi_flashstart);
}
void board_init_f(ulong unused)
{
gd_t gd_data;
/* Initialize the global data pointer */
memset(&gd_data, 0, sizeof(gd_data));
gd = &gd_data;
/* Perform initialization sequence */
cpu_init();
timer_init();
env_init();
init_baudrate();
serial_init();
console_init_f();
display_banner();
board_init_memories();
board_init_r(gd, CFG_MONITOR_BASE);
}
void board_init_r(gd_t *new_gd, ulong dest_addr)
{
gd = new_gd;
monitor_flash_len = _edata - _text;
mem_malloc_init();
gd->bd = malloc(sizeof(bd_t));
memset(gd->bd, 0, sizeof(bd_t));
gd->bd->bi_baudrate = gd->baudrate;
gd->bd->bi_dram[0].start = CFG_SDRAM_BASE;
gd->bd->bi_dram[0].size = gd->sdram_size;
board_init_info();
flash_init();
if (gd->bd->bi_flashsize)
display_flash_config();
if (gd->bd->bi_dram[0].size)
display_dram_config();
gd->bd->bi_boot_params = malloc(CFG_BOOTPARAMS_LEN);
if (!gd->bd->bi_boot_params)
puts("WARNING: Cannot allocate space for boot parameters\n");
/* initialize environment */
env_relocate();
devices_init();
jumptable_init();
console_init_r();
for (;;) {
main_loop();
}
}
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