lib_blackfin/board.c - platform/external/u-boot - Gitiles

 /*
  * U-boot - board.c First C file to be called contains init routines
  *
  * Copyright (c) 2005-2007 Analog Devices Inc.
  *
  * (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., 51 Franklin St, Fifth Floor, Boston,
  * MA 02110-1301 USA
  */

 #include <common.h>
 #include <command.h>
 #include <malloc.h>
 #include <devices.h>
 #include <version.h>
 #include <net.h>
 #include <environment.h>
 #include <i2c.h>
 #include "blackfin_board.h"
 #include <asm/cplb.h>
 #include "../drivers/smc91111.h"

 #if defined(CONFIG_BF537)&&defined(CONFIG_POST)
 #include <post.h>
 int post_flag;
 #endif

 DECLARE_GLOBAL_DATA_PTR;

 #ifndef CFG_NO_FLASH
 extern flash_info_t flash_info[];
 #endif

 static inline u_long get_vco(void)
 {
 	u_long msel;
 	u_long vco;

 	msel = (*pPLL_CTL >> 9) & 0x3F;
 	if (0 == msel)
 		msel = 64;

 	vco = CONFIG_CLKIN_HZ;
 	vco >>= (1 & *pPLL_CTL);	/* DF bit */
 	vco = msel * vco;
 	return vco;
 }

 /*Get the Core clock*/
 u_long get_cclk(void)
 {
 	u_long csel, ssel;
 	if (*pPLL_STAT & 0x1)
 		return CONFIG_CLKIN_HZ;

 	ssel = *pPLL_DIV;
 	csel = ((ssel >> 4) & 0x03);
 	ssel &= 0xf;
 	if (ssel && ssel < (1 << csel))	/* SCLK > CCLK */
 		return get_vco() / ssel;
 	return get_vco() >> csel;
 }

 /* Get the System clock */
 u_long get_sclk(void)
 {
 	u_long ssel;

 	if (*pPLL_STAT & 0x1)
 		return CONFIG_CLKIN_HZ;

 	ssel = (*pPLL_DIV & 0xf);

 	return get_vco() / ssel;
 }

 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)
 {
 	char 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

 /* we cover everything with 4 meg pages, and need an extra for L1 */
 unsigned int icplb_table[page_descriptor_table_size][2];
 unsigned int dcplb_table[page_descriptor_table_size][2];

 void init_cplbtables(void)
 {
 	int i, j;

 	j = 0;
 	icplb_table[j][0] = 0xFFA00000;
 	icplb_table[j][1] = L1_IMEMORY;
 	j++;

 	for (i = 0; i < CONFIG_MEM_SIZE / 4; i++) {
 		icplb_table[j][0] = (i * 4 * 1024 * 1024);
 		if (i * 4 * 1024 * 1024 <= CFG_MONITOR_BASE
 		    && (i + 1) * 4 * 1024 * 1024 >= CFG_MONITOR_BASE) {
 			icplb_table[j][1] = SDRAM_IKERNEL;
 		} else {
 			icplb_table[j][1] = SDRAM_IGENERIC;
 		}
 		j++;
 	}
 #if defined(CONFIG_BF561)
 	/* MAC space */
 	icplb_table[j][0] = 0x2C000000;
 	icplb_table[j][1] = SDRAM_INON_CHBL;
 	j++;
 	/* Async Memory space */
 	for (i = 0; i < 3; i++) {
 		icplb_table[j][0] = 0x20000000 + i * 4 * 1024 * 1024;
 		icplb_table[j][1] = SDRAM_INON_CHBL;
 		j++;
 	}
 #else
 	icplb_table[j][0] = 0x20000000;
 	icplb_table[j][1] = SDRAM_INON_CHBL;
 #endif
 	j = 0;
 	dcplb_table[j][0] = 0xFF800000;
 	dcplb_table[j][1] = L1_DMEMORY;
 	j++;

 	for (i = 0; i < CONFIG_MEM_SIZE / 4; i++) {
 		dcplb_table[j][0] = (i * 4 * 1024 * 1024);
 		if (i * 4 * 1024 * 1024 <= CFG_MONITOR_BASE
 		    && (i + 1) * 4 * 1024 * 1024 >= CFG_MONITOR_BASE) {
 			dcplb_table[j][1] = SDRAM_DKERNEL;
 		} else {
 			dcplb_table[j][1] = SDRAM_DGENERIC;
 		}
 		j++;
 	}

 #if defined(CONFIG_BF561)
 	/* MAC space */
 	dcplb_table[j][0] = 0x2C000000;
 	dcplb_table[j][1] = SDRAM_EBIU;
 	j++;

 	/* Flash space */
 	for (i = 0; i < 3; i++) {
 		dcplb_table[j][0] = 0x20000000 + i * 4 * 1024 * 1024;
 		dcplb_table[j][1] = SDRAM_EBIU;
 		j++;
 	}
 #else
 	dcplb_table[j][0] = 0x20000000;
 	dcplb_table[j][1] = SDRAM_EBIU;
 #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;
 	int i;

 	init_cplbtables();

 	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();
 #ifdef CONFIG_ICACHE_ON
 	icache_enable();
 #endif
 #ifdef CONFIG_DCACHE_ON
 	dcache_enable();
 #endif
 	display_banner();	/* say that we are here */

 	for (i = 0; i < page_descriptor_table_size; i++) {
 		debug
 		    ("data (%02i)= 0x%08x : 0x%08x    intr = 0x%08x : 0x%08x\n",
 		     i, dcplb_table[i][0], dcplb_table[i][1], icplb_table[i][0],
 		     icplb_table[i][1]);
 	}

 	checkboard();
 #if defined(CONFIG_RTC_BF533) && defined(CONFIG_CMD_DATE)
 	rtc_init();
 #endif
 	timer_init();
 	printf("Clock: VCO: %lu MHz, Core: %lu MHz, System: %lu MHz\n",
 	       get_vco() / 1000000, get_cclk() / 1000000, get_sclk() / 1000000);
 	printf("SDRAM: ");
 	print_size(initdram(0), "\n");
 #if defined(CONFIG_BF537)&&defined(CONFIG_POST)
 	post_init_f();
 	post_bootmode_init();
 	post_run(NULL, POST_ROM | post_bootmode_get(0));
 #endif
 	board_init_r((gd_t *) gd, 0x20000010);
 }

 #if defined(CONFIG_SOFT_I2C) || defined(CONFIG_HARD_I2C)
 static int init_func_i2c(void)
 {
 	puts("I2C:   ");
 	i2c_init(CFG_I2C_SPEED, CFG_I2C_SLAVE);
 	puts("ready\n");
 	return (0);
 }
 #endif

 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    defined(CONFIG_BF537) && defined(CONFIG_POST)
 	post_output_backlog();
 	post_reloc();
 #endif

 #if	(CONFIG_STAMP || CONFIG_BF537 || CONFIG_EZKIT561) && !defined(CFG_NO_FLASH)
 	/* 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();

 #ifdef CONFIG_SPI
 # if ! defined(CFG_ENV_IS_IN_EEPROM)
 	spi_init_f();
 # endif
 	spi_init_r();
 #endif

 	/* 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 defined(CONFIG_CMD_NET)
 	if ((s = getenv("bootfile")) != NULL) {
 		copy_filename(BootFile, s, sizeof(BootFile));
 	}
 #endif

 #if defined(CONFIG_CMD_NAND)
 	puts("NAND:  ");
 	nand_init();		/* go init the NAND */
 #endif

 #if defined(CONFIG_MISC_INIT_R)
 	/* miscellaneous platform dependent initialisations */
 	misc_init_r();
 #endif

 #if ((BFIN_CPU == ADSP_BF537) || (BFIN_CPU == ADSP_BF536))
 	printf("Net:    ");
 	eth_initialize(bd);
 #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
 #if defined(CONFIG_SOFT_I2C) || defined(CONFIG_HARD_I2C)
 	init_func_i2c();
 #endif

 #ifdef DEBUG
 	display_global_data();
 #endif

 #if defined(CONFIG_BF537) && defined(CONFIG_POST)
 	if (post_flag)
 		post_run(NULL, POST_RAM | post_bootmode_get(0));
 #endif

 	/* main_loop() can return to retry autoboot, if so just run it again. */
 	for (;;) {
 		main_loop();
 	}
 }

 void hang(void)
 {
 	puts("### ERROR ### Please RESET the board ###\n");
 	for (;;) ;
 }
	/*
	* U-boot - board.c First C file to be called contains init routines
	*
	* Copyright (c) 2005-2007 Analog Devices Inc.
	*
	* (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., 51 Franklin St, Fifth Floor, Boston,
	* MA 02110-1301 USA
	*/

	#include <common.h>
	#include <command.h>
	#include <malloc.h>
	#include <devices.h>
	#include <version.h>
	#include <net.h>
	#include <environment.h>
	#include <i2c.h>
	#include "blackfin_board.h"
	#include <asm/cplb.h>
	#include "../drivers/smc91111.h"

	#if defined(CONFIG_BF537)&&defined(CONFIG_POST)
	#include <post.h>
	int post_flag;
	#endif

	DECLARE_GLOBAL_DATA_PTR;

	#ifndef CFG_NO_FLASH
	extern flash_info_t flash_info[];
	#endif

	static inline u_long get_vco(void)
	{
	u_long msel;
	u_long vco;

	msel = (*pPLL_CTL >> 9) & 0x3F;
	if (0 == msel)
	msel = 64;

	vco = CONFIG_CLKIN_HZ;
	vco >>= (1 & pPLL_CTL); / DF bit */
	vco = msel * vco;
	return vco;
	}

	/Get the Core clock/
	u_long get_cclk(void)
	{
	u_long csel, ssel;
	if (*pPLL_STAT & 0x1)
	return CONFIG_CLKIN_HZ;

	ssel = *pPLL_DIV;
	csel = ((ssel >> 4) & 0x03);
	ssel &= 0xf;
	if (ssel && ssel < (1 << csel)) /* SCLK > CCLK */
	return get_vco() / ssel;
	return get_vco() >> csel;
	}

	/* Get the System clock */
	u_long get_sclk(void)
	{
	u_long ssel;

	if (*pPLL_STAT & 0x1)
	return CONFIG_CLKIN_HZ;

	ssel = (*pPLL_DIV & 0xf);

	return get_vco() / ssel;
	}

	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)
	{
	char 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

	/* we cover everything with 4 meg pages, and need an extra for L1 */
	unsigned int icplb_table[page_descriptor_table_size][2];
	unsigned int dcplb_table[page_descriptor_table_size][2];

	void init_cplbtables(void)
	{
	int i, j;

	j = 0;
	icplb_table[j][0] = 0xFFA00000;
	icplb_table[j][1] = L1_IMEMORY;
	j++;

	for (i = 0; i < CONFIG_MEM_SIZE / 4; i++) {
	icplb_table[j][0] = (i * 4 * 1024 * 1024);
	if (i * 4 * 1024 * 1024 <= CFG_MONITOR_BASE
	&& (i + 1) * 4 * 1024 * 1024 >= CFG_MONITOR_BASE) {
	icplb_table[j][1] = SDRAM_IKERNEL;
	} else {
	icplb_table[j][1] = SDRAM_IGENERIC;
	}
	j++;
	}
	#if defined(CONFIG_BF561)
	/* MAC space */
	icplb_table[j][0] = 0x2C000000;
	icplb_table[j][1] = SDRAM_INON_CHBL;
	j++;
	/* Async Memory space */
	for (i = 0; i < 3; i++) {
	icplb_table[j][0] = 0x20000000 + i * 4 * 1024 * 1024;
	icplb_table[j][1] = SDRAM_INON_CHBL;
	j++;
	}
	#else
	icplb_table[j][0] = 0x20000000;
	icplb_table[j][1] = SDRAM_INON_CHBL;
	#endif
	j = 0;
	dcplb_table[j][0] = 0xFF800000;
	dcplb_table[j][1] = L1_DMEMORY;
	j++;

	for (i = 0; i < CONFIG_MEM_SIZE / 4; i++) {
	dcplb_table[j][0] = (i * 4 * 1024 * 1024);
	if (i * 4 * 1024 * 1024 <= CFG_MONITOR_BASE
	&& (i + 1) * 4 * 1024 * 1024 >= CFG_MONITOR_BASE) {
	dcplb_table[j][1] = SDRAM_DKERNEL;
	} else {
	dcplb_table[j][1] = SDRAM_DGENERIC;
	}
	j++;
	}

	#if defined(CONFIG_BF561)
	/* MAC space */
	dcplb_table[j][0] = 0x2C000000;
	dcplb_table[j][1] = SDRAM_EBIU;
	j++;

	/* Flash space */
	for (i = 0; i < 3; i++) {
	dcplb_table[j][0] = 0x20000000 + i * 4 * 1024 * 1024;
	dcplb_table[j][1] = SDRAM_EBIU;
	j++;
	}
	#else
	dcplb_table[j][0] = 0x20000000;
	dcplb_table[j][1] = SDRAM_EBIU;
	#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;
	int i;

	init_cplbtables();

	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();
	#ifdef CONFIG_ICACHE_ON
	icache_enable();
	#endif
	#ifdef CONFIG_DCACHE_ON
	dcache_enable();
	#endif
	display_banner(); /* say that we are here */

	for (i = 0; i < page_descriptor_table_size; i++) {
	debug
	("data (%02i)= 0x%08x : 0x%08x intr = 0x%08x : 0x%08x\n",
	i, dcplb_table[i][0], dcplb_table[i][1], icplb_table[i][0],
	icplb_table[i][1]);
	}

	checkboard();
	#if defined(CONFIG_RTC_BF533) && defined(CONFIG_CMD_DATE)
	rtc_init();
	#endif
	timer_init();
	printf("Clock: VCO: %lu MHz, Core: %lu MHz, System: %lu MHz\n",
	get_vco() / 1000000, get_cclk() / 1000000, get_sclk() / 1000000);
	printf("SDRAM: ");
	print_size(initdram(0), "\n");
	#if defined(CONFIG_BF537)&&defined(CONFIG_POST)
	post_init_f();
	post_bootmode_init();
	post_run(NULL, POST_ROM \| post_bootmode_get(0));
	#endif
	board_init_r((gd_t *) gd, 0x20000010);
	}

	#if defined(CONFIG_SOFT_I2C) \|\| defined(CONFIG_HARD_I2C)
	static int init_func_i2c(void)
	{
	puts("I2C: ");
	i2c_init(CFG_I2C_SPEED, CFG_I2C_SLAVE);
	puts("ready\n");
	return (0);
	}
	#endif

	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 defined(CONFIG_BF537) && defined(CONFIG_POST)
	post_output_backlog();
	post_reloc();
	#endif

	#if (CONFIG_STAMP \|\| CONFIG_BF537 \|\| CONFIG_EZKIT561) && !defined(CFG_NO_FLASH)
	/* 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();

	#ifdef CONFIG_SPI
	# if ! defined(CFG_ENV_IS_IN_EEPROM)
	spi_init_f();
	# endif
	spi_init_r();
	#endif

	/* 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 defined(CONFIG_CMD_NET)
	if ((s = getenv("bootfile")) != NULL) {
	copy_filename(BootFile, s, sizeof(BootFile));
	}
	#endif

	#if defined(CONFIG_CMD_NAND)
	puts("NAND: ");
	nand_init(); /* go init the NAND */
	#endif

	#if defined(CONFIG_MISC_INIT_R)
	/* miscellaneous platform dependent initialisations */
	misc_init_r();
	#endif

	#if ((BFIN_CPU == ADSP_BF537) \|\| (BFIN_CPU == ADSP_BF536))
	printf("Net: ");
	eth_initialize(bd);
	#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
	#if defined(CONFIG_SOFT_I2C) \|\| defined(CONFIG_HARD_I2C)
	init_func_i2c();
	#endif

	#ifdef DEBUG
	display_global_data();
	#endif

	#if defined(CONFIG_BF537) && defined(CONFIG_POST)
	if (post_flag)
	post_run(NULL, POST_RAM \| post_bootmode_get(0));
	#endif

	/* main_loop() can return to retry autoboot, if so just run it again. */
	for (;;) {
	main_loop();
	}
	}

	void hang(void)
	{
	puts("### ERROR ### Please RESET the board ###\n");
	for (;;) ;
	}