arch/m68k/lib/board.c - github/trini/u-boot - Gitiles

 /*
  * (C) Copyright 2003
  * Josef Baumgartner <josef.baumgartner@telex.de>
  *
  * (C) Copyright 2000-2002
  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  *
  * SPDX-License-Identifier:	GPL-2.0+
  */

 #include <common.h>
 #include <watchdog.h>
 #include <command.h>
 #include <malloc.h>
 #include <stdio_dev.h>
 #include <linux/compiler.h>

 #include <asm/immap.h>

 #if defined(CONFIG_CMD_IDE)
 #include <ide.h>
 #endif
 #if defined(CONFIG_CMD_SCSI)
 #include <scsi.h>
 #endif
 #if defined(CONFIG_CMD_KGDB)
 #include <kgdb.h>
 #endif
 #ifdef CONFIG_STATUS_LED
 #include <status_led.h>
 #endif
 #include <net.h>
 #include <serial.h>
 #if defined(CONFIG_CMD_BEDBUG)
 #include <cmd_bedbug.h>
 #endif
 #ifdef CONFIG_SYS_ALLOC_DPRAM
 #include <commproc.h>
 #endif
 #include <version.h>

 #if defined(CONFIG_HARD_I2C) || \
 	defined(CONFIG_SYS_I2C)
 #include <i2c.h>
 #endif

 #ifdef CONFIG_CMD_SPI
 #include <spi.h>
 #endif

 #ifdef CONFIG_BITBANGMII
 #include <miiphy.h>
 #endif

 #include <nand.h>

 DECLARE_GLOBAL_DATA_PTR;

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

 #include <environment.h>

 extern ulong __init_end;
 extern ulong __bss_end;

 #if defined(CONFIG_WATCHDOG)
 # undef INIT_FUNC_WATCHDOG_INIT
 # define INIT_FUNC_WATCHDOG_INIT	watchdog_init,
 # define WATCHDOG_DISABLE		watchdog_disable

 extern int watchdog_init(void);
 extern int watchdog_disable(void);
 #else
 # define INIT_FUNC_WATCHDOG_INIT	/* undef */
 # define WATCHDOG_DISABLE		/* undef */
 #endif /* CONFIG_WATCHDOG */

 ulong monitor_flash_len;

 /************************************************************************
  * Utilities								*
  ************************************************************************
  */

 /*
  * 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 Utilities
  ************************************************************************
  * Some of this code should be moved into the core functions,
  * but let's get it working (again) first...
  */

 static int init_baudrate (void)
 {
 	gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
 	return 0;
 }

 /***********************************************************************/

 static int init_func_ram (void)
 {
 	int board_type = 0;	/* use dummy arg */
 	puts ("DRAM:  ");

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

 /***********************************************************************/

 #if defined(CONFIG_HARD_I2C) ||	defined(CONFIG_SYS_I2C)
 static int init_func_i2c (void)
 {
 	puts ("I2C:   ");
 #ifdef CONFIG_SYS_I2C
 	i2c_init_all();
 #else
 	i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
 #endif
 	puts ("ready\n");
 	return (0);
 }
 #endif

 #if defined(CONFIG_HARD_SPI)
 static int init_func_spi (void)
 {
 	puts ("SPI:   ");
 	spi_init ();
 	puts ("ready\n");
 	return (0);
 }
 #endif

 /***********************************************************************/

 /************************************************************************
  * Initialization sequence						*
  ************************************************************************
  */

 init_fnc_t *init_sequence[] = {
 	get_clocks,
 	env_init,
 	init_baudrate,
 	serial_init,
 	console_init_f,
 	display_options,
 	checkcpu,
 	checkboard,
 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SYS_I2C)
 	init_func_i2c,
 #endif
 #if defined(CONFIG_HARD_SPI)
 	init_func_spi,
 #endif
 	init_func_ram,
 #if defined(CONFIG_SYS_DRAM_TEST)
 	testdram,
 #endif /* CONFIG_SYS_DRAM_TEST */
 	INIT_FUNC_WATCHDOG_INIT
 	NULL,			/* Terminate this list */
 };


 /************************************************************************
  *
  * This is the first part of the initialization sequence that is
  * implemented in C, but still running from ROM.
  *
  * The main purpose is to provide a (serial) console interface as
  * soon as possible (so we can see any error messages), and to
  * initialize the RAM so that we can relocate the monitor code to
  * RAM.
  *
  * Be aware of the restrictions: global data is read-only, BSS is not
  * initialized, and stack space is limited to a few kB.
  *
  ************************************************************************
  */

 void
 board_init_f (ulong bootflag)
 {
 	bd_t *bd;
 	ulong len, addr, addr_sp;
 	ulong *paddr;
 	gd_t *id;
 	init_fnc_t **init_fnc_ptr;
 #ifdef CONFIG_PRAM
 	ulong reg;
 #endif

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

 	/* Clear initial global data */
 	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 ();
 		}
 	}

 	/*
 	 * Now that we have DRAM mapped and working, we can
 	 * relocate the code and continue running from DRAM.
 	 *
 	 * Reserve memory at end of RAM for (top down in that order):
 	 *	- protected RAM
 	 *	- LCD framebuffer
 	 *	- monitor code
 	 *	- board info struct
 	 */
 	len = (ulong)&__bss_end - CONFIG_SYS_MONITOR_BASE;

 	addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;

 #ifdef CONFIG_LOGBUFFER
 	/* reserve kernel log buffer */
 	addr -= (LOGBUFF_RESERVE);
 	debug ("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN, addr);
 #endif

 #ifdef CONFIG_PRAM
 	/*
 	 * reserve protected RAM
 	 */
 	reg = getenv_ulong("pram", 10, CONFIG_PRAM);
 	addr -= (reg << 10);		/* size is in kB */
 	debug ("Reserving %ldk for protected RAM at %08lx\n", reg, addr);
 #endif /* CONFIG_PRAM */

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

 #ifdef CONFIG_LCD
 #ifdef CONFIG_FB_ADDR
 	gd->fb_base = CONFIG_FB_ADDR;
 #else
 	/* reserve memory for LCD display (always full pages) */
 	addr = lcd_setmem (addr);
 	gd->fb_base = addr;
 #endif /* CONFIG_FB_ADDR */
 #endif /* CONFIG_LCD */

 	/*
 	 * reserve memory for U-Boot code, data & bss
 	 * round down to next 4 kB limit
 	 */
 	addr -= len;
 	addr &= ~(4096 - 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 %zu Bytes for Board Info at: %08lx\n",
 			sizeof (bd_t), addr_sp);
 	addr_sp -= sizeof (gd_t);
 	id = (gd_t *) addr_sp;
 	debug ("Reserving %zu Bytes for Global Data at: %08lx\n",
 			sizeof (gd_t), addr_sp);

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

 	paddr = (ulong *)addr_sp;
 	*paddr-- = 0;
 	*paddr-- = 0;
 	addr_sp = (ulong)paddr;

 	debug ("Stack Pointer at: %08lx\n", addr_sp);

 	/*
 	 * Save local variables to board info struct
 	 */
 	bd->bi_memstart  = CONFIG_SYS_SDRAM_BASE;	/* start of  DRAM memory      */
 	bd->bi_memsize   = gd->ram_size;	/* size  of  DRAM memory in bytes */
 #ifdef CONFIG_SYS_INIT_RAM_ADDR
 	bd->bi_sramstart = CONFIG_SYS_INIT_RAM_ADDR;	/* start of  SRAM memory	*/
 	bd->bi_sramsize  = CONFIG_SYS_INIT_RAM_SIZE;	/* size  of  SRAM memory	*/
 #endif
 	bd->bi_mbar_base = CONFIG_SYS_MBAR;		/* base of internal registers */

 	bd->bi_bootflags = bootflag;		/* boot / reboot flag (for LynxOS)    */

 	WATCHDOG_RESET ();
 	bd->bi_intfreq = gd->cpu_clk;	/* Internal Freq, in Hz */
 	bd->bi_busfreq = gd->bus_clk;	/* Bus Freq,      in Hz */
 #ifdef CONFIG_PCI
 	bd->bi_pcifreq = gd->pci_clk;		/* PCI Freq in Hz */
 #endif
 #ifdef CONFIG_EXTRA_CLOCK
 	bd->bi_inpfreq = gd->arch.inp_clk;		/* input Freq in Hz */
 	bd->bi_vcofreq = gd->arch.vco_clk;		/* vco Freq in Hz */
 	bd->bi_flbfreq = gd->arch.flb_clk;		/* flexbus Freq in Hz */
 #endif

 #ifdef CONFIG_SYS_EXTBDINFO
 	strncpy (bd->bi_s_version, "1.2", sizeof (bd->bi_s_version));
 	strncpy (bd->bi_r_version, U_BOOT_VERSION, sizeof (bd->bi_r_version));
 #endif

 	WATCHDOG_RESET ();

 #ifdef CONFIG_POST
 	post_bootmode_init();
 	post_run (NULL, POST_ROM | post_bootmode_get(0));
 #endif

 	WATCHDOG_RESET();

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

 	debug ("Start relocate of code from %08x to %08lx\n", CONFIG_SYS_MONITOR_BASE, addr);
 	relocate_code (addr_sp, id, addr);

 	/* NOTREACHED - jump_to_ram() 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)
 {
 	char *s __maybe_unused;
 	bd_t *bd;

 #ifndef CONFIG_ENV_IS_NOWHERE
 	extern char * env_name_spec;
 #endif
 #ifndef CONFIG_SYS_NO_FLASH
 	ulong flash_size;
 #endif
 	gd = id;		/* initialize RAM version of global data */
 	bd = gd->bd;

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

 	WATCHDOG_RESET ();

 	gd->reloc_off =  dest_addr - CONFIG_SYS_MONITOR_BASE;

 	serial_initialize();

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

 	monitor_flash_len = (ulong)&__init_end - dest_addr;

 #if defined(CONFIG_NEEDS_MANUAL_RELOC)
 	/*
 	 * We have to relocate the command table manually
 	 */
 	fixup_cmdtable(ll_entry_start(cmd_tbl_t, cmd),
 			ll_entry_count(cmd_tbl_t, cmd));
 #endif /* defined(CONFIG_NEEDS_MANUAL_RELOC) */

 	/* there are some other pointer constants we must deal with */
 #ifndef CONFIG_ENV_IS_NOWHERE
 	env_name_spec += gd->reloc_off;
 #endif

 	WATCHDOG_RESET ();

 #ifdef CONFIG_LOGBUFFER
 	logbuff_init_ptrs ();
 #endif
 #ifdef CONFIG_POST
 	post_output_backlog ();
 	post_reloc ();
 #endif
 	WATCHDOG_RESET();

 #if 0
 	/* instruction cache enabled in cpu_init_f() for faster relocation */
 	icache_enable ();	/* it's time to enable the instruction cache */
 #endif

 	/*
 	 * Setup trap handlers
 	 */
 	trap_init (CONFIG_SYS_SDRAM_BASE);

 	/* The Malloc area is immediately below the monitor copy in DRAM */
 	mem_malloc_init (CONFIG_SYS_MONITOR_BASE + gd->reloc_off -
 			TOTAL_MALLOC_LEN, TOTAL_MALLOC_LEN);

 #if !defined(CONFIG_SYS_NO_FLASH)
 	puts ("Flash: ");

 	if ((flash_size = flash_init ()) > 0) {
 # ifdef CONFIG_SYS_FLASH_CHECKSUM
 		print_size (flash_size, "");
 		/*
 		 * Compute and print flash CRC if flashchecksum is set to 'y'
 		 *
 		 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
 		 */
 		if (getenv_yesno("flashchecksum") == 1) {
 			printf ("  CRC: %08X",
 					crc32 (0,
 						   (const unsigned char *) CONFIG_SYS_FLASH_BASE,
 						   flash_size)
 					);
 		}
 		putc ('\n');
 # else	/* !CONFIG_SYS_FLASH_CHECKSUM */
 		print_size (flash_size, "\n");
 # endif /* CONFIG_SYS_FLASH_CHECKSUM */
 	} else {
 		puts (failed);
 		hang ();
 	}

 	bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;	/* update start of FLASH memory    */
 	bd->bi_flashsize = flash_size;	/* size of FLASH memory (final value) */
 	bd->bi_flashoffset = 0;
 #else	/* CONFIG_SYS_NO_FLASH */
 	bd->bi_flashsize = 0;
 	bd->bi_flashstart = 0;
 	bd->bi_flashoffset = 0;
 #endif /* !CONFIG_SYS_NO_FLASH */

 	WATCHDOG_RESET ();

 	/* initialize higher level parts of CPU like time base and timers */
 	cpu_init_r ();

 	WATCHDOG_RESET ();

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

 #if defined(CONFIG_SYS_I2C)
 	/* Adjust I2C subsystem pointers after relocation */
 	i2c_reloc_fixup();
 #endif

 	/* relocate environment function pointers etc. */
 	env_relocate ();

 	WATCHDOG_RESET ();

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

 	/** leave this here (after malloc(), environment and PCI are working) **/
 	/* Initialize stdio devices */
 	stdio_init ();

 	/* Initialize the jump table for applications */
 	jumptable_init ();

 	/* Initialize the console (after the relocation and devices init) */
 	console_init_r ();

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

 #if defined(CONFIG_CMD_KGDB)
 	WATCHDOG_RESET ();
 	puts ("KGDB:  ");
 	kgdb_init ();
 #endif

 	debug ("U-Boot relocated to %08lx\n", dest_addr);

 	/*
 	 * Enable Interrupts
 	 */
 	interrupt_init ();

 	/* Must happen after interrupts are initialized since
 	 * an irq handler gets installed
 	 */
 	timer_init();

 #ifdef CONFIG_STATUS_LED
 	status_led_set (STATUS_LED_BOOT, STATUS_LED_BLINKING);
 #endif

 	udelay (20);

 	/* Insert function pointers now that we have relocated the code */

 	/* Initialize from environment */
 	load_addr = getenv_ulong("loadaddr", 16, load_addr);

 	WATCHDOG_RESET ();

 #if defined(CONFIG_CMD_DOC)
 	WATCHDOG_RESET ();
 	puts ("DOC:   ");
 	doc_init ();
 #endif

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

 #ifdef CONFIG_BITBANGMII
 	bb_miiphy_init();
 #endif
 #if defined(CONFIG_CMD_NET)
 	WATCHDOG_RESET();
 #if defined(FEC_ENET)
 	eth_init(bd);
 #endif
 	puts ("Net:   ");
 	eth_initialize (bd);
 #endif

 #ifdef CONFIG_POST
 	post_run (NULL, POST_RAM | post_bootmode_get(0));
 #endif

 #if defined(CONFIG_CMD_PCMCIA) \
     && !defined(CONFIG_CMD_IDE)
 	WATCHDOG_RESET ();
 	puts ("PCMCIA:");
 	pcmcia_init ();
 #endif

 #if defined(CONFIG_CMD_IDE)
 	WATCHDOG_RESET ();
 	puts ("IDE:   ");
 	ide_init ();
 #endif

 #ifdef CONFIG_LAST_STAGE_INIT
 	WATCHDOG_RESET ();
 	/*
 	 * Some parts can be only initialized if all others (like
 	 * Interrupts) are up and running (i.e. the PC-style ISA
 	 * keyboard).
 	 */
 	last_stage_init ();
 #endif

 #if defined(CONFIG_CMD_BEDBUG)
 	WATCHDOG_RESET ();
 	bedbug_init ();
 #endif

 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
 	/*
 	 * Export available size of memory for Linux,
 	 * taking into account the protected RAM at top of memory
 	 */
 	{
 		ulong pram = 0;
 		char memsz[32];

 #ifdef CONFIG_PRAM
 		pram = getenv_ulong("pram", 10, CONFIG_PRAM);
 #endif
 #ifdef CONFIG_LOGBUFFER
 		/* Also take the logbuffer into account (pram is in kB) */
 		pram += (LOGBUFF_LEN+LOGBUFF_OVERHEAD)/1024;
 #endif
 		sprintf (memsz, "%ldk", (bd->bi_memsize / 1024) - pram);
 		setenv ("mem", memsz);
 	}
 #endif

 #ifdef CONFIG_WATCHDOG
 	/* disable watchdog if environment is set */
 	if ((s = getenv ("watchdog")) != NULL) {
 		if (strncmp (s, "off", 3) == 0) {
 			WATCHDOG_DISABLE ();
 		}
 	}
 #endif /* CONFIG_WATCHDOG*/


 	/* Initialization complete - start the monitor */

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

 	/* NOTREACHED - no way out of command loop except booting */
 }
	/*
	* (C) Copyright 2003
	* Josef Baumgartner <josef.baumgartner@telex.de>
	*
	* (C) Copyright 2000-2002
	* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
	*
	* SPDX-License-Identifier: GPL-2.0+
	*/

	#include <common.h>
	#include <watchdog.h>
	#include <command.h>
	#include <malloc.h>
	#include <stdio_dev.h>
	#include <linux/compiler.h>

	#include <asm/immap.h>

	#if defined(CONFIG_CMD_IDE)
	#include <ide.h>
	#endif
	#if defined(CONFIG_CMD_SCSI)
	#include <scsi.h>
	#endif
	#if defined(CONFIG_CMD_KGDB)
	#include <kgdb.h>
	#endif
	#ifdef CONFIG_STATUS_LED
	#include <status_led.h>
	#endif
	#include <net.h>
	#include <serial.h>
	#if defined(CONFIG_CMD_BEDBUG)
	#include <cmd_bedbug.h>
	#endif
	#ifdef CONFIG_SYS_ALLOC_DPRAM
	#include <commproc.h>
	#endif
	#include <version.h>

	#if defined(CONFIG_HARD_I2C) \|\| \
	defined(CONFIG_SYS_I2C)
	#include <i2c.h>
	#endif

	#ifdef CONFIG_CMD_SPI
	#include <spi.h>
	#endif

	#ifdef CONFIG_BITBANGMII
	#include <miiphy.h>
	#endif

	#include <nand.h>

	DECLARE_GLOBAL_DATA_PTR;

	static char failed = " failed *\n";

	#include <environment.h>

	extern ulong __init_end;
	extern ulong __bss_end;

	#if defined(CONFIG_WATCHDOG)
	# undef INIT_FUNC_WATCHDOG_INIT
	# define INIT_FUNC_WATCHDOG_INIT watchdog_init,
	# define WATCHDOG_DISABLE watchdog_disable

	extern int watchdog_init(void);
	extern int watchdog_disable(void);
	#else
	# define INIT_FUNC_WATCHDOG_INIT /* undef */
	# define WATCHDOG_DISABLE /* undef */
	#endif /* CONFIG_WATCHDOG */

	ulong monitor_flash_len;

	/************************************************************************
	* Utilities *
	************************************************************************
	*/

	/*
	* 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 Utilities
	************************************************************************
	* Some of this code should be moved into the core functions,
	* but let's get it working (again) first...
	*/

	static int init_baudrate (void)
	{
	gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
	return 0;
	}

	/***********************************************************************/

	static int init_func_ram (void)
	{
	int board_type = 0; /* use dummy arg */
	puts ("DRAM: ");

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

	/***********************************************************************/

	#if defined(CONFIG_HARD_I2C) \|\| defined(CONFIG_SYS_I2C)
	static int init_func_i2c (void)
	{
	puts ("I2C: ");
	#ifdef CONFIG_SYS_I2C
	i2c_init_all();
	#else
	i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
	#endif
	puts ("ready\n");
	return (0);
	}
	#endif

	#if defined(CONFIG_HARD_SPI)
	static int init_func_spi (void)
	{
	puts ("SPI: ");
	spi_init ();
	puts ("ready\n");
	return (0);
	}
	#endif

	/***********************************************************************/

	/************************************************************************
	* Initialization sequence *
	************************************************************************
	*/

	init_fnc_t *init_sequence[] = {
	get_clocks,
	env_init,
	init_baudrate,
	serial_init,
	console_init_f,
	display_options,
	checkcpu,
	checkboard,
	#if defined(CONFIG_HARD_I2C) \|\| defined(CONFIG_SYS_I2C)
	init_func_i2c,
	#endif
	#if defined(CONFIG_HARD_SPI)
	init_func_spi,
	#endif
	init_func_ram,
	#if defined(CONFIG_SYS_DRAM_TEST)
	testdram,
	#endif /* CONFIG_SYS_DRAM_TEST */
	INIT_FUNC_WATCHDOG_INIT
	NULL, /* Terminate this list */
	};


	/************************************************************************
	*
	* This is the first part of the initialization sequence that is
	* implemented in C, but still running from ROM.
	*
	* The main purpose is to provide a (serial) console interface as
	* soon as possible (so we can see any error messages), and to
	* initialize the RAM so that we can relocate the monitor code to
	* RAM.
	*
	* Be aware of the restrictions: global data is read-only, BSS is not
	* initialized, and stack space is limited to a few kB.
	*
	************************************************************************
	*/

	void
	board_init_f (ulong bootflag)
	{
	bd_t *bd;
	ulong len, addr, addr_sp;
	ulong *paddr;
	gd_t *id;
	init_fnc_t **init_fnc_ptr;
	#ifdef CONFIG_PRAM
	ulong reg;
	#endif

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

	/* Clear initial global data */
	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 ();
	}
	}

	/*
	* Now that we have DRAM mapped and working, we can
	* relocate the code and continue running from DRAM.
	*
	* Reserve memory at end of RAM for (top down in that order):
	* - protected RAM
	* - LCD framebuffer
	* - monitor code
	* - board info struct
	*/
	len = (ulong)&__bss_end - CONFIG_SYS_MONITOR_BASE;

	addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;

	#ifdef CONFIG_LOGBUFFER
	/* reserve kernel log buffer */
	addr -= (LOGBUFF_RESERVE);
	debug ("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN, addr);
	#endif

	#ifdef CONFIG_PRAM
	/*
	* reserve protected RAM
	*/
	reg = getenv_ulong("pram", 10, CONFIG_PRAM);
	addr -= (reg << 10); /* size is in kB */
	debug ("Reserving %ldk for protected RAM at %08lx\n", reg, addr);
	#endif /* CONFIG_PRAM */

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

	#ifdef CONFIG_LCD
	#ifdef CONFIG_FB_ADDR
	gd->fb_base = CONFIG_FB_ADDR;
	#else
	/* reserve memory for LCD display (always full pages) */
	addr = lcd_setmem (addr);
	gd->fb_base = addr;
	#endif /* CONFIG_FB_ADDR */
	#endif /* CONFIG_LCD */

	/*
	* reserve memory for U-Boot code, data & bss
	* round down to next 4 kB limit
	*/
	addr -= len;
	addr &= ~(4096 - 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 %zu Bytes for Board Info at: %08lx\n",
	sizeof (bd_t), addr_sp);
	addr_sp -= sizeof (gd_t);
	id = (gd_t *) addr_sp;
	debug ("Reserving %zu Bytes for Global Data at: %08lx\n",
	sizeof (gd_t), addr_sp);

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

	paddr = (ulong *)addr_sp;
	*paddr-- = 0;
	*paddr-- = 0;
	addr_sp = (ulong)paddr;

	debug ("Stack Pointer at: %08lx\n", addr_sp);

	/*
	* Save local variables to board info struct
	*/
	bd->bi_memstart = CONFIG_SYS_SDRAM_BASE; /* start of DRAM memory */
	bd->bi_memsize = gd->ram_size; /* size of DRAM memory in bytes */
	#ifdef CONFIG_SYS_INIT_RAM_ADDR
	bd->bi_sramstart = CONFIG_SYS_INIT_RAM_ADDR; /* start of SRAM memory */
	bd->bi_sramsize = CONFIG_SYS_INIT_RAM_SIZE; /* size of SRAM memory */
	#endif
	bd->bi_mbar_base = CONFIG_SYS_MBAR; /* base of internal registers */

	bd->bi_bootflags = bootflag; /* boot / reboot flag (for LynxOS) */

	WATCHDOG_RESET ();
	bd->bi_intfreq = gd->cpu_clk; /* Internal Freq, in Hz */
	bd->bi_busfreq = gd->bus_clk; /* Bus Freq, in Hz */
	#ifdef CONFIG_PCI
	bd->bi_pcifreq = gd->pci_clk; /* PCI Freq in Hz */
	#endif
	#ifdef CONFIG_EXTRA_CLOCK
	bd->bi_inpfreq = gd->arch.inp_clk; /* input Freq in Hz */
	bd->bi_vcofreq = gd->arch.vco_clk; /* vco Freq in Hz */
	bd->bi_flbfreq = gd->arch.flb_clk; /* flexbus Freq in Hz */
	#endif

	#ifdef CONFIG_SYS_EXTBDINFO
	strncpy (bd->bi_s_version, "1.2", sizeof (bd->bi_s_version));
	strncpy (bd->bi_r_version, U_BOOT_VERSION, sizeof (bd->bi_r_version));
	#endif

	WATCHDOG_RESET ();

	#ifdef CONFIG_POST
	post_bootmode_init();
	post_run (NULL, POST_ROM \| post_bootmode_get(0));
	#endif

	WATCHDOG_RESET();

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

	debug ("Start relocate of code from %08x to %08lx\n", CONFIG_SYS_MONITOR_BASE, addr);
	relocate_code (addr_sp, id, addr);

	/* NOTREACHED - jump_to_ram() 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)
	{
	char *s __maybe_unused;
	bd_t *bd;

	#ifndef CONFIG_ENV_IS_NOWHERE
	extern char * env_name_spec;
	#endif
	#ifndef CONFIG_SYS_NO_FLASH
	ulong flash_size;
	#endif
	gd = id; /* initialize RAM version of global data */
	bd = gd->bd;

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

	WATCHDOG_RESET ();

	gd->reloc_off = dest_addr - CONFIG_SYS_MONITOR_BASE;

	serial_initialize();

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

	monitor_flash_len = (ulong)&__init_end - dest_addr;

	#if defined(CONFIG_NEEDS_MANUAL_RELOC)
	/*
	* We have to relocate the command table manually
	*/
	fixup_cmdtable(ll_entry_start(cmd_tbl_t, cmd),
	ll_entry_count(cmd_tbl_t, cmd));
	#endif /* defined(CONFIG_NEEDS_MANUAL_RELOC) */

	/* there are some other pointer constants we must deal with */
	#ifndef CONFIG_ENV_IS_NOWHERE
	env_name_spec += gd->reloc_off;
	#endif

	WATCHDOG_RESET ();

	#ifdef CONFIG_LOGBUFFER
	logbuff_init_ptrs ();
	#endif
	#ifdef CONFIG_POST
	post_output_backlog ();
	post_reloc ();
	#endif
	WATCHDOG_RESET();

	#if 0
	/* instruction cache enabled in cpu_init_f() for faster relocation */
	icache_enable (); /* it's time to enable the instruction cache */
	#endif

	/*
	* Setup trap handlers
	*/
	trap_init (CONFIG_SYS_SDRAM_BASE);

	/* The Malloc area is immediately below the monitor copy in DRAM */
	mem_malloc_init (CONFIG_SYS_MONITOR_BASE + gd->reloc_off -
	TOTAL_MALLOC_LEN, TOTAL_MALLOC_LEN);

	#if !defined(CONFIG_SYS_NO_FLASH)
	puts ("Flash: ");

	if ((flash_size = flash_init ()) > 0) {
	# ifdef CONFIG_SYS_FLASH_CHECKSUM
	print_size (flash_size, "");
	/*
	* Compute and print flash CRC if flashchecksum is set to 'y'
	*
	* NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
	*/
	if (getenv_yesno("flashchecksum") == 1) {
	printf (" CRC: %08X",
	crc32 (0,
	(const unsigned char *) CONFIG_SYS_FLASH_BASE,
	flash_size)
	);
	}
	putc ('\n');
	# else /* !CONFIG_SYS_FLASH_CHECKSUM */
	print_size (flash_size, "\n");
	# endif /* CONFIG_SYS_FLASH_CHECKSUM */
	} else {
	puts (failed);
	hang ();
	}

	bd->bi_flashstart = CONFIG_SYS_FLASH_BASE; /* update start of FLASH memory */
	bd->bi_flashsize = flash_size; /* size of FLASH memory (final value) */
	bd->bi_flashoffset = 0;
	#else /* CONFIG_SYS_NO_FLASH */
	bd->bi_flashsize = 0;
	bd->bi_flashstart = 0;
	bd->bi_flashoffset = 0;
	#endif /* !CONFIG_SYS_NO_FLASH */

	WATCHDOG_RESET ();

	/* initialize higher level parts of CPU like time base and timers */
	cpu_init_r ();

	WATCHDOG_RESET ();

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

	#if defined(CONFIG_SYS_I2C)
	/* Adjust I2C subsystem pointers after relocation */
	i2c_reloc_fixup();
	#endif

	/* relocate environment function pointers etc. */
	env_relocate ();

	WATCHDOG_RESET ();

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

	/ leave this here (after malloc(), environment and PCI are working) /
	/* Initialize stdio devices */
	stdio_init ();

	/* Initialize the jump table for applications */
	jumptable_init ();

	/* Initialize the console (after the relocation and devices init) */
	console_init_r ();

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

	#if defined(CONFIG_CMD_KGDB)
	WATCHDOG_RESET ();
	puts ("KGDB: ");
	kgdb_init ();
	#endif

	debug ("U-Boot relocated to %08lx\n", dest_addr);

	/*
	* Enable Interrupts
	*/
	interrupt_init ();

	/* Must happen after interrupts are initialized since
	* an irq handler gets installed
	*/
	timer_init();

	#ifdef CONFIG_STATUS_LED
	status_led_set (STATUS_LED_BOOT, STATUS_LED_BLINKING);
	#endif

	udelay (20);

	/* Insert function pointers now that we have relocated the code */

	/* Initialize from environment */
	load_addr = getenv_ulong("loadaddr", 16, load_addr);

	WATCHDOG_RESET ();

	#if defined(CONFIG_CMD_DOC)
	WATCHDOG_RESET ();
	puts ("DOC: ");
	doc_init ();
	#endif

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

	#ifdef CONFIG_BITBANGMII
	bb_miiphy_init();
	#endif
	#if defined(CONFIG_CMD_NET)
	WATCHDOG_RESET();
	#if defined(FEC_ENET)
	eth_init(bd);
	#endif
	puts ("Net: ");
	eth_initialize (bd);
	#endif

	#ifdef CONFIG_POST
	post_run (NULL, POST_RAM \| post_bootmode_get(0));
	#endif

	#if defined(CONFIG_CMD_PCMCIA) \
	&& !defined(CONFIG_CMD_IDE)
	WATCHDOG_RESET ();
	puts ("PCMCIA:");
	pcmcia_init ();
	#endif

	#if defined(CONFIG_CMD_IDE)
	WATCHDOG_RESET ();
	puts ("IDE: ");
	ide_init ();
	#endif

	#ifdef CONFIG_LAST_STAGE_INIT
	WATCHDOG_RESET ();
	/*
	* Some parts can be only initialized if all others (like
	* Interrupts) are up and running (i.e. the PC-style ISA
	* keyboard).
	*/
	last_stage_init ();
	#endif

	#if defined(CONFIG_CMD_BEDBUG)
	WATCHDOG_RESET ();
	bedbug_init ();
	#endif

	#if defined(CONFIG_PRAM) \|\| defined(CONFIG_LOGBUFFER)
	/*
	* Export available size of memory for Linux,
	* taking into account the protected RAM at top of memory
	*/
	{
	ulong pram = 0;
	char memsz[32];

	#ifdef CONFIG_PRAM
	pram = getenv_ulong("pram", 10, CONFIG_PRAM);
	#endif
	#ifdef CONFIG_LOGBUFFER
	/* Also take the logbuffer into account (pram is in kB) */
	pram += (LOGBUFF_LEN+LOGBUFF_OVERHEAD)/1024;
	#endif
	sprintf (memsz, "%ldk", (bd->bi_memsize / 1024) - pram);
	setenv ("mem", memsz);
	}
	#endif

	#ifdef CONFIG_WATCHDOG
	/* disable watchdog if environment is set */
	if ((s = getenv ("watchdog")) != NULL) {
	if (strncmp (s, "off", 3) == 0) {
	WATCHDOG_DISABLE ();
	}
	}
	#endif /* CONFIG_WATCHDOG*/


	/* Initialization complete - start the monitor */

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

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