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/*
* Copyright (C) 2007,2008
* Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
*
* 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 <watchdog.h>
#include <net.h>
#include <environment.h>
extern void malloc_bin_reloc (void);
extern int cpu_init(void);
extern int board_init(void);
extern int dram_init(void);
extern int timer_init(void);
const char version_string[] = U_BOOT_VERSION" (" __DATE__ " - " __TIME__ ")";
unsigned long monitor_flash_len = CFG_MONITOR_LEN;
static unsigned long mem_malloc_start;
static unsigned long mem_malloc_end;
static unsigned long mem_malloc_brk;
static void mem_malloc_init(void)
{
mem_malloc_start = (TEXT_BASE - CFG_GBL_DATA_SIZE - CFG_MALLOC_LEN);
mem_malloc_end = (mem_malloc_start + CFG_MALLOC_LEN - 16);
mem_malloc_brk = mem_malloc_start;
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 sh_flash_init(void)
{
DECLARE_GLOBAL_DATA_PTR;
gd->bd->bi_flashsize = flash_init();
printf("FLASH: %ldMB\n", gd->bd->bi_flashsize / (1024*1024));
return 0;
}
#if defined(CONFIG_CMD_NAND)
# include <nand.h>
# define INIT_FUNC_NAND_INIT nand_init,
#else
# define INIT_FUNC_NAND_INIT
#endif /* CONFIG_CMD_NAND */
#if defined(CONFIG_WATCHDOG)
extern int watchdog_init(void);
extern int watchdog_disable(void);
# define INIT_FUNC_WATCHDOG_INIT watchdog_init,
# define WATCHDOG_DISABLE watchdog_disable
#else
# define INIT_FUNC_WATCHDOG_INIT
# define WATCHDOG_DISABLE
#endif /* CONFIG_WATCHDOG */
#if defined(CONFIG_CMD_IDE)
# include <ide.h>
# define INIT_FUNC_IDE_INIT ide_init,
#else
# define INIT_FUNC_IDE_INIT
#endif /* CONFIG_CMD_IDE */
#if defined(CONFIG_PCI)
#include <pci.h>
static int sh_pci_init(void)
{
pci_init();
return 0;
}
# define INIT_FUNC_PCI_INIT sh_pci_init,
#else
# define INIT_FUNC_PCI_INIT
#endif /* CONFIG_PCI */
static int sh_mem_env_init(void)
{
mem_malloc_init();
malloc_bin_reloc();
env_relocate();
jumptable_init();
return 0;
}
#if defined(CONFIG_CMD_NET)
static int sh_net_init(void)
{
DECLARE_GLOBAL_DATA_PTR;
char *s, *e;
int i;
gd->bd->bi_ip_addr = getenv_IPaddr("ipaddr");
s = getenv("ethaddr");
for (i = 0; i < 6; ++i) {
gd->bd->bi_enetaddr[i] = s ? simple_strtoul(s, &e, 16) : 0;
if (s)
s = (*e) ? e + 1 : e;
}
return 0;
}
#endif
typedef int (init_fnc_t) (void);
init_fnc_t *init_sequence[] =
{
cpu_init, /* basic cpu dependent setup */
board_init, /* basic board dependent setup */
interrupt_init, /* set up exceptions */
env_init, /* event init */
serial_init, /* SCIF init */
INIT_FUNC_WATCHDOG_INIT /* watchdog init */
console_init_f,
display_options,
checkcpu,
checkboard, /* Check support board */
dram_init, /* SDRAM init */
timer_init, /* SuperH Timer (TCNT0 only) init */
sh_flash_init, /* Flash memory(NOR) init*/
sh_mem_env_init,
INIT_FUNC_NAND_INIT/* Flash memory (NAND) init */
INIT_FUNC_PCI_INIT /* PCI init */
devices_init,
console_init_r,
interrupt_init,
#ifdef BOARD_LATE_INIT
board_late_init,
#endif
#if defined(CONFIG_CMD_NET)
sh_net_init, /* SH specific eth init */
#endif
NULL /* Terminate this list */
};
void sh_generic_init(void)
{
DECLARE_GLOBAL_DATA_PTR;
bd_t *bd;
init_fnc_t **init_fnc_ptr;
memset(gd, 0, CFG_GBL_DATA_SIZE);
gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
gd->bd = (bd_t *)(gd + 1); /* At end of global data */
gd->baudrate = CONFIG_BAUDRATE;
gd->cpu_clk = CONFIG_SYS_CLK_FREQ;
bd = gd->bd;
bd->bi_memstart = CFG_SDRAM_BASE;
bd->bi_memsize = CFG_SDRAM_SIZE;
bd->bi_flashstart = CFG_FLASH_BASE;
#if defined(CFG_SRAM_BASE) && defined(CFG_SRAM_SIZE)
bd->bi_sramstart = CFG_SRAM_BASE;
bd->bi_sramsize = CFG_SRAM_SIZE;
#endif
bd->bi_baudrate = CONFIG_BAUDRATE;
for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
WATCHDOG_RESET();
if ((*init_fnc_ptr) () != 0)
hang();
}
#ifdef CONFIG_WATCHDOG
/* disable watchdog if environment is set */
{
char *s = getenv("watchdog");
if (s != NULL)
if (strncmp(s, "off", 3) == 0)
WATCHDOG_DISABLE();
}
#endif /* CONFIG_WATCHDOG*/
#if defined(CONFIG_CMD_NET)
{
char *s;
puts("Net: ");
eth_initialize(gd->bd);
s = getenv("bootfile");
if (s != NULL)
copy_filename(BootFile, s, sizeof(BootFile));
}
#endif /* CONFIG_CMD_NET */
while (1) {
WATCHDOG_RESET();
main_loop();
}
}
/***********************************************************************/
void hang(void)
{
puts("Board ERROR\n");
for (;;)
;
}
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