lib_mips/board.c - uboot/windcharger - Git at Google

 /*
  * (C) Copyright 2003
  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  *
  * Copyright (c) 2013 Qualcomm Atheros, Inc.
  *
  * 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>

 DECLARE_GLOBAL_DATA_PTR;

 #if ( ((CFG_ENV_ADDR+CFG_ENV_SIZE) < CFG_MONITOR_BASE) || \
       (CFG_ENV_ADDR >= (CFG_MONITOR_BASE + CFG_MONITOR_LEN)) ) || \
     defined(CFG_ENV_IS_IN_NVRAM)
 #define	TOTAL_MALLOC_LEN	(CFG_MALLOC_LEN + CFG_ENV_SIZE)
 #else
 #define	TOTAL_MALLOC_LEN	CFG_MALLOC_LEN
 #endif

 #undef DEBUG

 extern int timer_init(void);

 extern int incaip_set_cpuclk(void);

 #if defined(CONFIG_WASP_SUPPORT) || defined(CONFIG_MACH_QCA955x) || defined(CONFIG_MACH_QCA953x) || defined(CONFIG_MACH_QCA956x)
 void ath_set_tuning_caps(void);
 #else
 #define ath_set_tuning_caps()	/* nothing */
 #endif


 extern ulong uboot_end_data;
 extern ulong uboot_end;

 ulong monitor_flash_len;

 const char version_string[] =
 	U_BOOT_VERSION" (" __DATE__ " - " __TIME__ ")";

 static char *failed = "*** failed ***\n";

 /*
  * Begin and End of memory area for malloc(), and current "brk"
  */
 static ulong mem_malloc_start;
 static ulong mem_malloc_end;
 static ulong mem_malloc_brk;


 /*
  * The Malloc area is immediately below the monitor copy in DRAM
  */
 static void mem_malloc_init (void)
 {
 	ulong dest_addr = CFG_MONITOR_BASE + gd->reloc_off;

 	mem_malloc_end = dest_addr;
 	mem_malloc_start = dest_addr - TOTAL_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 init_func_ram (void)
 {
 #ifdef	CONFIG_BOARD_TYPES
 	int board_type = gd->board_type;
 #else
 	int board_type = 0;	/* use dummy arg */
 #endif
 	puts ("DRAM:  ");

 	if ((gd->ram_size = initdram (board_type)) > 0) {
 		print_size (gd->ram_size, "\n");
 		return (0);
 	}
 	puts (failed);
 	return (1);
 }

 static int display_banner(void)
 {

 	printf ("\n\n%s\n\n", version_string);

 	return (0);
 }

 static void display_flash_config(ulong size)
 {
 	puts ("Flash: ");
 	print_size (size, "\n");
 }


 static int init_baudrate (void)
 {
 	char tmp[64];	/* long enough for environment variables */
 	int i = getenv_r ("baudrate", tmp, sizeof (tmp));

 	gd->baudrate = (i > 0)
 			? (int) simple_strtoul (tmp, NULL, 10)
 			: CONFIG_BAUDRATE;

 	return (0);
 }


 /*
  * Breath some life into the board...
  *
  * 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.
  */

 /*
  * 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".
  */
 typedef int (init_fnc_t) (void);

 init_fnc_t *init_sequence[] = {
 #ifndef COMPRESSED_UBOOT
 	timer_init,
 #endif
 	env_init,		/* initialize environment */
 #ifdef CONFIG_INCA_IP
 	incaip_set_cpuclk,	/* set cpu clock according to environment variable */
 #endif
 	init_baudrate,		/* initialze baudrate settings */
 #ifndef COMPRESSED_UBOOT
 	serial_init,		/* serial communications setup */
 #endif
 	console_init_f,
 	display_banner,		/* say that we are here */
 #ifndef COMPRESSED_UBOOT
 	checkboard,
         init_func_ram,
 #endif
 	NULL,
 };


 void board_init_f(ulong bootflag)
 {
 	gd_t gd_data, *id;
 	bd_t *bd;
 	init_fnc_t **init_fnc_ptr;
 	ulong addr, addr_sp, len = (ulong)&uboot_end - CFG_MONITOR_BASE;
 	ulong *s;
 #ifdef COMPRESSED_UBOOT
         char board_string[50];
 #endif
 #ifdef CONFIG_PURPLE
 	void copy_code (ulong);
 #endif


 	/* Pointer is writable since we allocated a register for it.
 	 */
 	gd = &gd_data;
 	/* compiler optimization barrier needed for GCC >= 3.4 */
 	__asm__ __volatile__("": : :"memory");

 	memset ((void *)gd, 0, sizeof (gd_t));

 	for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
 		if ((*init_fnc_ptr)() != 0) {
 			hang ();
 		}
 	}

 #ifdef COMPRESSED_UBOOT
         checkboard(board_string);
         printf("%s\n\n",board_string);
         gd->ram_size = bootflag;
 	puts ("DRAM:  ");
 	print_size (gd->ram_size, "\n");
 #endif

 	/*
 	 * Now that we have DRAM mapped and working, we can
 	 * relocate the code and continue running from DRAM.
 	 */
 	addr = CFG_SDRAM_BASE + gd->ram_size;

 	/* We can reserve some RAM "on top" here.
 	 */

 	/* round down to next 4 kB limit.
 	 */
 	addr &= ~(4096 - 1);
 	debug ("Top of RAM usable for U-Boot at: %08lx\n", addr);

 	/* Reserve memory for U-Boot code, data & bss
 	 * round down to next 16 kB limit
 	 */
 	addr -= len;
 	addr &= ~(16 * 1024 - 1);

 	debug ("Reserving %ldk for U-Boot at: %08lx\n", len >> 10, addr);

 	 /* Reserve memory for malloc() arena.
 	 */
 	addr_sp = addr - TOTAL_MALLOC_LEN;
 	debug ("Reserving %dk for malloc() at: %08lx\n",
 			TOTAL_MALLOC_LEN >> 10, addr_sp);

 	/*
 	 * (permanently) allocate a Board Info struct
 	 * and a permanent copy of the "global" data
 	 */
 	addr_sp -= sizeof(bd_t);
 	bd = (bd_t *)addr_sp;
 	gd->bd = bd;
 	debug ("Reserving %d Bytes for Board Info at: %08lx\n",
 			sizeof(bd_t), addr_sp);

 	addr_sp -= sizeof(gd_t);
 	id = (gd_t *)addr_sp;
 	debug ("Reserving %d Bytes for Global Data at: %08lx\n",
 			sizeof (gd_t), addr_sp);

  	/* Reserve memory for boot params.
 	 */
 	addr_sp -= CFG_BOOTPARAMS_LEN;
 	bd->bi_boot_params = addr_sp;
 	debug ("Reserving %dk for boot params() at: %08lx\n",
 			CFG_BOOTPARAMS_LEN >> 10, addr_sp);

 	/*
 	 * Finally, we set up a new (bigger) stack.
 	 *
 	 * Leave some safety gap for SP, force alignment on 16 byte boundary
 	 * Clear initial stack frame
 	 */
 	addr_sp -= 16;
 	addr_sp &= ~0xF;
 	s = (ulong *)addr_sp;
 	*s-- = 0;
 	*s-- = 0;
 	addr_sp = (ulong)s;
 	debug ("Stack Pointer at: %08lx\n", addr_sp);

 	/*
 	 * Save local variables to board info struct
 	 */
 	bd->bi_memstart	= CFG_SDRAM_BASE;	/* start of  DRAM memory */
 	bd->bi_memsize	= gd->ram_size;		/* size  of  DRAM memory in bytes */
 	bd->bi_baudrate	= gd->baudrate;		/* Console Baudrate */

 	memcpy (id, (void *)gd, sizeof (gd_t));

 	/* On the purple board we copy the code in a special way
 	 * in order to solve flash problems
 	 */
 #ifdef CONFIG_PURPLE
 	copy_code(addr);
 #endif

 	relocate_code (addr_sp, id, addr);

 	/* NOTREACHED - relocate_code() does not return */
 }
 /************************************************************************
  *
  * This is the next part if the initialization sequence: we are now
  * running from RAM and have a "normal" C environment, i. e. global
  * data can be written, BSS has been cleared, the stack size in not
  * that critical any more, etc.
  *
  ************************************************************************
  */

 void board_init_r (gd_t *id, ulong dest_addr)
 {
 	cmd_tbl_t *cmdtp;
 	ulong size;
 	extern void malloc_bin_reloc (void);
 #ifndef CFG_ENV_IS_NOWHERE
 	extern char * env_name_spec;
 #endif
 #ifdef CONFIG_ATH_NAND_SUPPORT
 	extern ulong ath_nand_init(void);
 #endif
 	char *s, *e;
 	bd_t *bd;
 	int i;

 	gd = id;
 	gd->flags |= GD_FLG_RELOC;	/* tell others: relocation done */

 	debug ("Now running in RAM - U-Boot at: %08lx\n", dest_addr);

 	gd->reloc_off = dest_addr - CFG_MONITOR_BASE;

 	monitor_flash_len = (ulong)&uboot_end_data - dest_addr;

 	/*
 	 * We have to relocate the command table manually
 	 */
  	for (cmdtp = &__u_boot_cmd_start; cmdtp !=  &__u_boot_cmd_end; cmdtp++) {
 		ulong addr;

 		addr = (ulong) (cmdtp->cmd) + gd->reloc_off;
 #if 0
 		printf ("Command \"%s\": 0x%08lx => 0x%08lx\n",
 				cmdtp->name, (ulong) (cmdtp->cmd), addr);
 #endif
 		cmdtp->cmd =
 			(int (*)(struct cmd_tbl_s *, int, int, char *[]))addr;

 		addr = (ulong)(cmdtp->name) + gd->reloc_off;
 		cmdtp->name = (char *)addr;

 		if (cmdtp->usage) {
 			addr = (ulong)(cmdtp->usage) + gd->reloc_off;
 			cmdtp->usage = (char *)addr;
 		}
 #ifdef	CFG_LONGHELP
 		if (cmdtp->help) {
 			addr = (ulong)(cmdtp->help) + gd->reloc_off;
 			cmdtp->help = (char *)addr;
 		}
 #endif
 	}
 	/* there are some other pointer constants we must deal with */
 #ifndef CFG_ENV_IS_NOWHERE
 	env_name_spec += gd->reloc_off;
 #endif

 #ifndef CONFIG_ATH_NAND_BR
 	/* configure available FLASH banks */
 	size = flash_init();
 	display_flash_config (size);
 #endif

 	bd = gd->bd;
 	bd->bi_flashstart = CFG_FLASH_BASE;
 	bd->bi_flashsize = size;
 #if CFG_MONITOR_BASE == CFG_FLASH_BASE
 	bd->bi_flashoffset = monitor_flash_len;	/* reserved area for U-Boot */
 #else
 	bd->bi_flashoffset = 0;
 #endif

 	/* initialize malloc() area */
 	mem_malloc_init();
 	malloc_bin_reloc();

 #ifdef CONFIG_ATH_NAND_BR
 	ath_nand_init();
 #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");

 #if defined(CONFIG_PCI)
 	/*
 	 * Do pci configuration
 	 */
 	pci_init();
 #endif

 /** leave this here (after malloc(), environment and PCI are working) **/
 	/* 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	/* CFG_CMD_NET */

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

 #if (CONFIG_COMMANDS & CFG_CMD_NET)
 #if defined(CONFIG_NET_MULTI)
 	puts ("Net:   ");
 #endif
 	eth_initialize(gd->bd);
 #endif

 #if defined(CONFIG_ATH_NAND_SUPPORT) && !defined(CONFIG_ATH_NAND_BR)
 	ath_nand_init();
 #endif

         ath_set_tuning_caps(); /* Needed here not to mess with Ethernet clocks */

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

 	/* NOTREACHED - no way out of command loop except booting */
 }

 void hang (void)
 {
 	puts ("### ERROR ### Please RESET the board ###\n");
 	for (;;);
 }
	/*
	* (C) Copyright 2003
	* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
	*
	* Copyright (c) 2013 Qualcomm Atheros, Inc.
	*
	* 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>

	DECLARE_GLOBAL_DATA_PTR;

	#if ( ((CFG_ENV_ADDR+CFG_ENV_SIZE) < CFG_MONITOR_BASE) \|\| \
	(CFG_ENV_ADDR >= (CFG_MONITOR_BASE + CFG_MONITOR_LEN)) ) \|\| \
	defined(CFG_ENV_IS_IN_NVRAM)
	#define TOTAL_MALLOC_LEN (CFG_MALLOC_LEN + CFG_ENV_SIZE)
	#else
	#define TOTAL_MALLOC_LEN CFG_MALLOC_LEN
	#endif

	#undef DEBUG

	extern int timer_init(void);

	extern int incaip_set_cpuclk(void);

	#if defined(CONFIG_WASP_SUPPORT) \|\| defined(CONFIG_MACH_QCA955x) \|\| defined(CONFIG_MACH_QCA953x) \|\| defined(CONFIG_MACH_QCA956x)
	void ath_set_tuning_caps(void);
	#else
	#define ath_set_tuning_caps() /* nothing */
	#endif


	extern ulong uboot_end_data;
	extern ulong uboot_end;

	ulong monitor_flash_len;

	const char version_string[] =
	U_BOOT_VERSION" (" __DATE__ " - " __TIME__ ")";

	static char failed = " failed *\n";

	/*
	* Begin and End of memory area for malloc(), and current "brk"
	*/
	static ulong mem_malloc_start;
	static ulong mem_malloc_end;
	static ulong mem_malloc_brk;


	/*
	* The Malloc area is immediately below the monitor copy in DRAM
	*/
	static void mem_malloc_init (void)
	{
	ulong dest_addr = CFG_MONITOR_BASE + gd->reloc_off;

	mem_malloc_end = dest_addr;
	mem_malloc_start = dest_addr - TOTAL_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 init_func_ram (void)
	{
	#ifdef CONFIG_BOARD_TYPES
	int board_type = gd->board_type;
	#else
	int board_type = 0; /* use dummy arg */
	#endif
	puts ("DRAM: ");

	if ((gd->ram_size = initdram (board_type)) > 0) {
	print_size (gd->ram_size, "\n");
	return (0);
	}
	puts (failed);
	return (1);
	}

	static int display_banner(void)
	{

	printf ("\n\n%s\n\n", version_string);

	return (0);
	}

	static void display_flash_config(ulong size)
	{
	puts ("Flash: ");
	print_size (size, "\n");
	}


	static int init_baudrate (void)
	{
	char tmp[64]; /* long enough for environment variables */
	int i = getenv_r ("baudrate", tmp, sizeof (tmp));

	gd->baudrate = (i > 0)
	? (int) simple_strtoul (tmp, NULL, 10)
	: CONFIG_BAUDRATE;

	return (0);
	}


	/*
	* Breath some life into the board...
	*
	* 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.
	*/

	/*
	* 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".
	*/
	typedef int (init_fnc_t) (void);

	init_fnc_t *init_sequence[] = {
	#ifndef COMPRESSED_UBOOT
	timer_init,
	#endif
	env_init, /* initialize environment */
	#ifdef CONFIG_INCA_IP
	incaip_set_cpuclk, /* set cpu clock according to environment variable */
	#endif
	init_baudrate, /* initialze baudrate settings */
	#ifndef COMPRESSED_UBOOT
	serial_init, /* serial communications setup */
	#endif
	console_init_f,
	display_banner, /* say that we are here */
	#ifndef COMPRESSED_UBOOT
	checkboard,
	init_func_ram,
	#endif
	NULL,
	};


	void board_init_f(ulong bootflag)
	{
	gd_t gd_data, *id;
	bd_t *bd;
	init_fnc_t **init_fnc_ptr;
	ulong addr, addr_sp, len = (ulong)&uboot_end - CFG_MONITOR_BASE;
	ulong *s;
	#ifdef COMPRESSED_UBOOT
	char board_string[50];
	#endif
	#ifdef CONFIG_PURPLE
	void copy_code (ulong);
	#endif


	/* Pointer is writable since we allocated a register for it.
	*/
	gd = &gd_data;
	/* compiler optimization barrier needed for GCC >= 3.4 */
	__asm__ __volatile__("": : :"memory");

	memset ((void *)gd, 0, sizeof (gd_t));

	for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
	if ((*init_fnc_ptr)() != 0) {
	hang ();
	}
	}

	#ifdef COMPRESSED_UBOOT
	checkboard(board_string);
	printf("%s\n\n",board_string);
	gd->ram_size = bootflag;
	puts ("DRAM: ");
	print_size (gd->ram_size, "\n");
	#endif

	/*
	* Now that we have DRAM mapped and working, we can
	* relocate the code and continue running from DRAM.
	*/
	addr = CFG_SDRAM_BASE + gd->ram_size;

	/* We can reserve some RAM "on top" here.
	*/

	/* round down to next 4 kB limit.
	*/
	addr &= ~(4096 - 1);
	debug ("Top of RAM usable for U-Boot at: %08lx\n", addr);

	/* Reserve memory for U-Boot code, data & bss
	* round down to next 16 kB limit
	*/
	addr -= len;
	addr &= ~(16 * 1024 - 1);

	debug ("Reserving %ldk for U-Boot at: %08lx\n", len >> 10, addr);

	/* Reserve memory for malloc() arena.
	*/
	addr_sp = addr - TOTAL_MALLOC_LEN;
	debug ("Reserving %dk for malloc() at: %08lx\n",
	TOTAL_MALLOC_LEN >> 10, addr_sp);

	/*
	* (permanently) allocate a Board Info struct
	* and a permanent copy of the "global" data
	*/
	addr_sp -= sizeof(bd_t);
	bd = (bd_t *)addr_sp;
	gd->bd = bd;
	debug ("Reserving %d Bytes for Board Info at: %08lx\n",
	sizeof(bd_t), addr_sp);

	addr_sp -= sizeof(gd_t);
	id = (gd_t *)addr_sp;
	debug ("Reserving %d Bytes for Global Data at: %08lx\n",
	sizeof (gd_t), addr_sp);

	/* Reserve memory for boot params.
	*/
	addr_sp -= CFG_BOOTPARAMS_LEN;
	bd->bi_boot_params = addr_sp;
	debug ("Reserving %dk for boot params() at: %08lx\n",
	CFG_BOOTPARAMS_LEN >> 10, addr_sp);

	/*
	* Finally, we set up a new (bigger) stack.
	*
	* Leave some safety gap for SP, force alignment on 16 byte boundary
	* Clear initial stack frame
	*/
	addr_sp -= 16;
	addr_sp &= ~0xF;
	s = (ulong *)addr_sp;
	*s-- = 0;
	*s-- = 0;
	addr_sp = (ulong)s;
	debug ("Stack Pointer at: %08lx\n", addr_sp);

	/*
	* Save local variables to board info struct
	*/
	bd->bi_memstart = CFG_SDRAM_BASE; /* start of DRAM memory */
	bd->bi_memsize = gd->ram_size; /* size of DRAM memory in bytes */
	bd->bi_baudrate = gd->baudrate; /* Console Baudrate */

	memcpy (id, (void *)gd, sizeof (gd_t));

	/* On the purple board we copy the code in a special way
	* in order to solve flash problems
	*/
	#ifdef CONFIG_PURPLE
	copy_code(addr);
	#endif

	relocate_code (addr_sp, id, addr);

	/* NOTREACHED - relocate_code() does not return */
	}
	/************************************************************************
	*
	* This is the next part if the initialization sequence: we are now
	* running from RAM and have a "normal" C environment, i. e. global
	* data can be written, BSS has been cleared, the stack size in not
	* that critical any more, etc.
	*
	************************************************************************
	*/

	void board_init_r (gd_t *id, ulong dest_addr)
	{
	cmd_tbl_t *cmdtp;
	ulong size;
	extern void malloc_bin_reloc (void);
	#ifndef CFG_ENV_IS_NOWHERE
	extern char * env_name_spec;
	#endif
	#ifdef CONFIG_ATH_NAND_SUPPORT
	extern ulong ath_nand_init(void);
	#endif
	char s, e;
	bd_t *bd;
	int i;

	gd = id;
	gd->flags \|= GD_FLG_RELOC; /* tell others: relocation done */

	debug ("Now running in RAM - U-Boot at: %08lx\n", dest_addr);

	gd->reloc_off = dest_addr - CFG_MONITOR_BASE;

	monitor_flash_len = (ulong)&uboot_end_data - dest_addr;

	/*
	* We have to relocate the command table manually
	*/
	for (cmdtp = &__u_boot_cmd_start; cmdtp != &__u_boot_cmd_end; cmdtp++) {
	ulong addr;

	addr = (ulong) (cmdtp->cmd) + gd->reloc_off;
	#if 0
	printf ("Command \"%s\": 0x%08lx => 0x%08lx\n",
	cmdtp->name, (ulong) (cmdtp->cmd), addr);
	#endif
	cmdtp->cmd =
	(int ()(struct cmd_tbl_s , int, int, char *[]))addr;

	addr = (ulong)(cmdtp->name) + gd->reloc_off;
	cmdtp->name = (char *)addr;

	if (cmdtp->usage) {
	addr = (ulong)(cmdtp->usage) + gd->reloc_off;
	cmdtp->usage = (char *)addr;
	}
	#ifdef CFG_LONGHELP
	if (cmdtp->help) {
	addr = (ulong)(cmdtp->help) + gd->reloc_off;
	cmdtp->help = (char *)addr;
	}
	#endif
	}
	/* there are some other pointer constants we must deal with */
	#ifndef CFG_ENV_IS_NOWHERE
	env_name_spec += gd->reloc_off;
	#endif

	#ifndef CONFIG_ATH_NAND_BR
	/* configure available FLASH banks */
	size = flash_init();
	display_flash_config (size);
	#endif

	bd = gd->bd;
	bd->bi_flashstart = CFG_FLASH_BASE;
	bd->bi_flashsize = size;
	#if CFG_MONITOR_BASE == CFG_FLASH_BASE
	bd->bi_flashoffset = monitor_flash_len; /* reserved area for U-Boot */
	#else
	bd->bi_flashoffset = 0;
	#endif

	/* initialize malloc() area */
	mem_malloc_init();
	malloc_bin_reloc();

	#ifdef CONFIG_ATH_NAND_BR
	ath_nand_init();
	#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");

	#if defined(CONFIG_PCI)
	/*
	* Do pci configuration
	*/
	pci_init();
	#endif

	/ leave this here (after malloc(), environment and PCI are working) /
	/* 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 /* CFG_CMD_NET */

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

	#if (CONFIG_COMMANDS & CFG_CMD_NET)
	#if defined(CONFIG_NET_MULTI)
	puts ("Net: ");
	#endif
	eth_initialize(gd->bd);
	#endif

	#if defined(CONFIG_ATH_NAND_SUPPORT) && !defined(CONFIG_ATH_NAND_BR)
	ath_nand_init();
	#endif

	ath_set_tuning_caps(); /* Needed here not to mess with Ethernet clocks */

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

	/* NOTREACHED - no way out of command loop except booting */
	}

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