u-boot/lib_blackfin/board.c

279 lines
7.1 KiB
C

/*
* U-boot - board.c First C file to be called contains init routines
*
* Copyright (c) 2005 blackfin.uclinux.org
*
* (C) Copyright 2000-2004
* Wolfgang Denk, DENX Software Engineering, wd@denx.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 <common.h>
#include <command.h>
#include <malloc.h>
#include <devices.h>
#include <version.h>
#include <net.h>
#include <environment.h>
#include "blackfin_board.h"
#include "../drivers/smc91111.h"
DECLARE_GLOBAL_DATA_PTR;
extern flash_info_t flash_info[];
static void mem_malloc_init(void)
{
mem_malloc_start = CFG_MALLOC_BASE;
mem_malloc_end = (CFG_MALLOC_BASE + CFG_MALLOC_LEN);
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);
}
static int display_banner(void)
{
sprintf(version_string, VERSION_STRING_FORMAT, VERSION_STRING);
printf("%s\n", version_string);
return (0);
}
static void display_flash_config(ulong size)
{
puts("FLASH: ");
print_size(size, "\n");
return;
}
static int init_baudrate(void)
{
uchar tmp[64];
int i = getenv_r("baudrate", tmp, sizeof(tmp));
gd->bd->bi_baudrate = gd->baudrate = (i > 0)
? (int) simple_strtoul(tmp, NULL, 10)
: CONFIG_BAUDRATE;
return (0);
}
#ifdef DEBUG
static void display_global_data(void)
{
bd_t *bd;
bd = gd->bd;
printf("--flags:%x\n", gd->flags);
printf("--board_type:%x\n", gd->board_type);
printf("--baudrate:%x\n", gd->baudrate);
printf("--have_console:%x\n", gd->have_console);
printf("--ram_size:%x\n", gd->ram_size);
printf("--reloc_off:%x\n", gd->reloc_off);
printf("--env_addr:%x\n", gd->env_addr);
printf("--env_valid:%x\n", gd->env_valid);
printf("--bd:%x %x\n", gd->bd, bd);
printf("---bi_baudrate:%x\n", bd->bi_baudrate);
printf("---bi_ip_addr:%x\n", bd->bi_ip_addr);
printf("---bi_enetaddr:%x %x %x %x %x %x\n",
bd->bi_enetaddr[0],
bd->bi_enetaddr[1],
bd->bi_enetaddr[2],
bd->bi_enetaddr[3],
bd->bi_enetaddr[4],
bd->bi_enetaddr[5]);
printf("---bi_arch_number:%x\n", bd->bi_arch_number);
printf("---bi_boot_params:%x\n", bd->bi_boot_params);
printf("---bi_memstart:%x\n", bd->bi_memstart);
printf("---bi_memsize:%x\n", bd->bi_memsize);
printf("---bi_flashstart:%x\n", bd->bi_flashstart);
printf("---bi_flashsize:%x\n", bd->bi_flashsize);
printf("---bi_flashoffset:%x\n", bd->bi_flashoffset);
printf("--jt:%x *:%x\n", gd->jt, *(gd->jt));
}
#endif
/*
* All attempts to come up with a "common" initialization sequence
* that works for all boards and architectures failed: some of the
* requirements are just _too_ different. To get rid of the resulting
* mess of board dependend #ifdef'ed code we now make the whole
* initialization sequence configurable to the user.
*
* The requirements for any new initalization function is simple: it
* receives a pointer to the "global data" structure as it's only
* argument, and returns an integer return code, where 0 means
* "continue" and != 0 means "fatal error, hang the system".
*/
void board_init_f(ulong bootflag)
{
ulong addr;
bd_t *bd;
gd = (gd_t *) (CFG_GBL_DATA_ADDR);
memset((void *) gd, 0, sizeof(gd_t));
/* Board data initialization */
addr = (CFG_GBL_DATA_ADDR + sizeof(gd_t));
/* Align to 4 byte boundary */
addr &= ~(4 - 1);
bd = (bd_t*)addr;
gd->bd = bd;
memset((void *) bd, 0, sizeof(bd_t));
/* Initialize */
init_IRQ();
env_init(); /* initialize environment */
init_baudrate(); /* initialze baudrate settings */
serial_init(); /* serial communications setup */
console_init_f();
display_banner(); /* say that we are here */
checkboard();
#if defined(CONFIG_RTC_BF533) && (CONFIG_COMMANDS & CFG_CMD_DATE)
rtc_init();
#endif
timer_init();
printf("Clock: VCO: %lu MHz, Core: %lu MHz, System: %lu MHz\n", \
CONFIG_VCO_HZ/1000000, CONFIG_CCLK_HZ/1000000, CONFIG_SCLK_HZ/1000000);
printf("SDRAM: ");
print_size(initdram(0), "\n");
board_init_r((gd_t *) gd, 0x20000010);
}
void board_init_r(gd_t * id, ulong dest_addr)
{
ulong size;
extern void malloc_bin_reloc(void);
char *s, *e;
bd_t *bd;
int i;
gd = id;
gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
bd = gd->bd;
#if CONFIG_STAMP
/* There are some other pointer constants we must deal with */
/* configure available FLASH banks */
size = flash_init();
display_flash_config(size);
flash_protect(FLAG_PROTECT_SET, CFG_FLASH_BASE, CFG_FLASH_BASE + 0x1ffff, &flash_info[0]);
bd->bi_flashstart = CFG_FLASH_BASE;
bd->bi_flashsize = size;
bd->bi_flashoffset = 0;
#else
bd->bi_flashstart = 0;
bd->bi_flashsize = 0;
bd->bi_flashoffset = 0;
#endif
/* initialize malloc() area */
mem_malloc_init();
malloc_bin_reloc();
/* relocate environment function pointers etc. */
env_relocate();
/* board MAC address */
s = getenv("ethaddr");
for (i = 0; i < 6; ++i) {
bd->bi_enetaddr[i] = s ? simple_strtoul(s, &e, 16) : 0;
if (s)
s = (*e) ? e + 1 : e;
}
/* IP Address */
bd->bi_ip_addr = getenv_IPaddr("ipaddr");
/* Initialize devices */
devices_init();
jumptable_init();
/* Initialize the console (after the relocation and devices init) */
console_init_r();
/* Initialize from environment */
if ((s = getenv("loadaddr")) != NULL) {
load_addr = simple_strtoul(s, NULL, 16);
}
#if (CONFIG_COMMANDS & CFG_CMD_NET)
if ((s = getenv("bootfile")) != NULL) {
copy_filename(BootFile, s, sizeof(BootFile));
}
#endif
#if defined(CONFIG_MISC_INIT_R)
/* miscellaneous platform dependent initialisations */
misc_init_r();
#endif
#ifdef CONFIG_DRIVER_SMC91111
#ifdef SHARED_RESOURCES
/* Switch to Ethernet */
swap_to(ETHERNET);
#endif
if ( (SMC_inw(BANK_SELECT) & UPPER_BYTE_MASK) != SMC_IDENT ) {
printf("ERROR: Can't find SMC91111 at address %x\n", SMC_BASE_ADDRESS);
} else {
printf("Net: SMC91111 at 0x%08X\n", SMC_BASE_ADDRESS);
}
#ifdef SHARED_RESOURCES
swap_to(FLASH);
#endif
#endif
#ifdef CONFIG_SOFT_I2C
init_func_i2c();
#endif
#ifdef DEBUG
display_global_data(void);
#endif
/* main_loop() can return to retry autoboot, if so just run it again. */
for (;;) {
main_loop();
}
}
#ifdef CONFIG_SOFT_I2C
static int init_func_i2c (void)
{
puts ("I2C: ");
i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE);
puts ("ready\n");
return (0);
}
#endif
void hang(void)
{
puts("### ERROR ### Please RESET the board ###\n");
for (;;);
}