[J-u-boot.git] / lib_mips / board.c

/*
 * (C) Copyright 2003
 * Wolfgang Denk, DENX Software Engineering, [email protected].
 *
 * 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 <nand.h>
#include <spi.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);

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;

/*
 * mips_io_port_base is the begin of the address space to which x86 style
 * I/O ports are mapped.
 */
unsigned long mips_io_port_base = -1;

/*
 * 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);
}

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

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

	/*
	 * 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 %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 -= 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;
#ifndef CFG_NO_FLASH
	ulong size;
#endif
	extern void malloc_bin_reloc (void);
#ifndef CFG_ENV_IS_NOWHERE
	extern char * env_name_spec;
#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

	bd = gd->bd;

#ifndef CFG_NO_FLASH
	/* configure available FLASH banks */
	size = flash_init();
	display_flash_config (size);
	bd->bi_flashsize = size;
#endif

	bd->bi_flashstart = CFG_FLASH_BASE;
#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();

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

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

#ifdef CONFIG_CMD_SPI
	puts ("SPI:   ");
	spi_init ();		/* go init the SPI */
	puts ("ready\n");
#endif

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

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

	/* 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 (;;);
}
Commit	Line	Data
c021880a WD	1	/*
	2	* (C) Copyright 2003
	3	* Wolfgang Denk, DENX Software Engineering, [email protected].
	4	*
	5	* See file CREDITS for list of people who contributed to this
	6	* project.
	7	*
	8	* This program is free software; you can redistribute it and/or
	9	* modify it under the terms of the GNU General Public License as
	10	* published by the Free Software Foundation; either version 2 of
	11	* the License, or (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this program; if not, write to the Free Software
	20	* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	21	* MA 02111-1307 USA
	22	*/
	23
	24	#include <common.h>
	25	#include <command.h>
	26	#include <malloc.h>
	27	#include <devices.h>
c021880a WD	28	#include <version.h>
	29	#include <net.h>
	30	#include <environment.h>
e996bc33	31	#include <nand.h>
89a1550e	32	#include <spi.h>
c021880a	33
c75eba3b WD	34	DECLARE_GLOBAL_DATA_PTR;
c75eba3b WD	35
c021880a WD	36	#if ( ((CFG_ENV_ADDR+CFG_ENV_SIZE) < CFG_MONITOR_BASE) \|\| \
	37	(CFG_ENV_ADDR >= (CFG_MONITOR_BASE + CFG_MONITOR_LEN)) ) \|\| \
	38	defined(CFG_ENV_IS_IN_NVRAM)
	39	#define TOTAL_MALLOC_LEN (CFG_MALLOC_LEN + CFG_ENV_SIZE)
	40	#else
	41	#define TOTAL_MALLOC_LEN CFG_MALLOC_LEN
	42	#endif
	43
	44	#undef DEBUG
	45
	46	extern int timer_init(void);
	47
7cb22f97 WD	48	extern int incaip_set_cpuclk(void);
7cb22f97 WD	49
3b57fe0a WD	50	extern ulong uboot_end_data;
	51	extern ulong uboot_end;
	52
	53	ulong monitor_flash_len;
	54
c021880a WD	55	const char version_string[] =
	56	U_BOOT_VERSION" (" __DATE__ " - " __TIME__ ")";
	57
	58	static char failed = " failed *\n";
	59
	60	/*
	61	* Begin and End of memory area for malloc(), and current "brk"
	62	*/
	63	static ulong mem_malloc_start;
	64	static ulong mem_malloc_end;
	65	static ulong mem_malloc_brk;
	66
5c15010e JCPV	67	/*
	68	* mips_io_port_base is the begin of the address space to which x86 style
	69	* I/O ports are mapped.
	70	*/
	71	unsigned long mips_io_port_base = -1;
c021880a WD	72
	73	/*
	74	* The Malloc area is immediately below the monitor copy in DRAM
	75	*/
	76	static void mem_malloc_init (void)
	77	{
c021880a WD	78	ulong dest_addr = CFG_MONITOR_BASE + gd->reloc_off;
	79
	80	mem_malloc_end = dest_addr;
	81	mem_malloc_start = dest_addr - TOTAL_MALLOC_LEN;
	82	mem_malloc_brk = mem_malloc_start;
	83
	84	memset ((void *) mem_malloc_start,
	85	0,
	86	mem_malloc_end - mem_malloc_start);
	87	}
	88
	89	void *sbrk (ptrdiff_t increment)
	90	{
	91	ulong old = mem_malloc_brk;
	92	ulong new = old + increment;
	93
	94	if ((new < mem_malloc_start) \|\| (new > mem_malloc_end)) {
	95	return (NULL);
	96	}
	97	mem_malloc_brk = new;
	98	return ((void *) old);
	99	}
	100
	101
	102	static int init_func_ram (void)
	103	{
c021880a WD	104	#ifdef CONFIG_BOARD_TYPES
	105	int board_type = gd->board_type;
	106	#else
	107	int board_type = 0; /* use dummy arg */
	108	#endif
	109	puts ("DRAM: ");
	110
	111	if ((gd->ram_size = initdram (board_type)) > 0) {
	112	print_size (gd->ram_size, "\n");
	113	return (0);
	114	}
	115	puts (failed);
	116	return (1);
	117	}
	118
	119	static int display_banner(void)
	120	{
	121
	122	printf ("\n\n%s\n\n", version_string);
	123	return (0);
	124	}
	125
beeccf7a	126	#ifndef CFG_NO_FLASH
c021880a WD	127	static void display_flash_config(ulong size)
	128	{
	129	puts ("Flash: ");
	130	print_size (size, "\n");
	131	}
beeccf7a	132	#endif
c021880a WD	133
	134	static int init_baudrate (void)
	135	{
f013dacf	136	char tmp[64]; /* long enough for environment variables */
c021880a WD	137	int i = getenv_r ("baudrate", tmp, sizeof (tmp));
	138
	139	gd->baudrate = (i > 0)
	140	? (int) simple_strtoul (tmp, NULL, 10)
	141	: CONFIG_BAUDRATE;
	142
	143	return (0);
	144	}
	145
	146
	147	/*
	148	* Breath some life into the board...
	149	*
	150	* The first part of initialization is running from Flash memory;
	151	* its main purpose is to initialize the RAM so that we
	152	* can relocate the monitor code to RAM.
	153	*/
	154
	155	/*
	156	* All attempts to come up with a "common" initialization sequence
	157	* that works for all boards and architectures failed: some of the
	158	* requirements are just _too_ different. To get rid of the resulting
	159	* mess of board dependend #ifdef'ed code we now make the whole
	160	* initialization sequence configurable to the user.
	161	*
	162	* The requirements for any new initalization function is simple: it
	163	* receives a pointer to the "global data" structure as it's only
	164	* argument, and returns an integer return code, where 0 means
	165	* "continue" and != 0 means "fatal error, hang the system".
	166	*/
	167	typedef int (init_fnc_t) (void);
	168
	169	init_fnc_t *init_sequence[] = {
	170	timer_init,
	171	env_init, /* initialize environment */
7cb22f97 WD	172	#ifdef CONFIG_INCA_IP
	173	incaip_set_cpuclk, /* set cpu clock according to environment variable */
	174	#endif
c021880a WD	175	init_baudrate, /* initialze baudrate settings */
	176	serial_init, /* serial communications setup */
	177	console_init_f,
	178	display_banner, /* say that we are here */
85ec0bcc	179	checkboard,
c021880a WD	180	init_func_ram,
	181	NULL,
	182	};
	183
	184
	185	void board_init_f(ulong bootflag)
	186	{
c021880a WD	187	gd_t gd_data, *id;
	188	bd_t *bd;
	189	init_fnc_t **init_fnc_ptr;
3b57fe0a	190	ulong addr, addr_sp, len = (ulong)&uboot_end - CFG_MONITOR_BASE;
c75eba3b	191	ulong *s;
3e38691e WD	192	#ifdef CONFIG_PURPLE
	193	void copy_code (ulong);
	194	#endif
c021880a	195
69459791 WD	196	/* Pointer is writable since we allocated a register for it.
69459791 WD	197	*/
c021880a	198	gd = &gd_data;
93f6a677 WD	199	/* compiler optimization barrier needed for GCC >= 3.4 */
	200	__asm__ __volatile__("": : :"memory");
	201
27b207fd	202	memset ((void *)gd, 0, sizeof (gd_t));
c021880a WD	203
	204	for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
	205	if ((*init_fnc_ptr)() != 0) {
	206	hang ();
	207	}
	208	}
	209
	210	/*
	211	* Now that we have DRAM mapped and working, we can
	212	* relocate the code and continue running from DRAM.
	213	*/
	214	addr = CFG_SDRAM_BASE + gd->ram_size;
	215
69459791 WD	216	/* We can reserve some RAM "on top" here.
69459791 WD	217	*/
c021880a	218
69459791 WD	219	/* round down to next 4 kB limit.
69459791 WD	220	*/
c021880a	221	addr &= ~(4096 - 1);
69459791	222	debug ("Top of RAM usable for U-Boot at: %08lx\n", addr);
8bde7f77	223
69459791 WD	224	/* Reserve memory for U-Boot code, data & bss
	225	* round down to next 16 kB limit
	226	*/
c021880a	227	addr -= len;
3b57fe0a	228	addr &= ~(16 * 1024 - 1);
c021880a	229
69459791	230	debug ("Reserving %ldk for U-Boot at: %08lx\n", len >> 10, addr);
c021880a	231
69459791 WD	232	/* Reserve memory for malloc() arena.
69459791 WD	233	*/
c021880a	234	addr_sp = addr - TOTAL_MALLOC_LEN;
69459791	235	debug ("Reserving %dk for malloc() at: %08lx\n",
c021880a	236	TOTAL_MALLOC_LEN >> 10, addr_sp);
c021880a WD	237
	238	/*
	239	* (permanently) allocate a Board Info struct
	240	* and a permanent copy of the "global" data
	241	*/
	242	addr_sp -= sizeof(bd_t);
	243	bd = (bd_t *)addr_sp;
	244	gd->bd = bd;
b64f190b	245	debug ("Reserving %zu Bytes for Board Info at: %08lx\n",
c021880a	246	sizeof(bd_t), addr_sp);
69459791	247
c021880a WD	248	addr_sp -= sizeof(gd_t);
c021880a WD	249	id = (gd_t *)addr_sp;
b64f190b	250	debug ("Reserving %zu Bytes for Global Data at: %08lx\n",
c021880a	251	sizeof (gd_t), addr_sp);
c021880a	252
beeccf7a	253	/* Reserve memory for boot params.
69459791	254	*/
c021880a WD	255	addr_sp -= CFG_BOOTPARAMS_LEN;
c021880a WD	256	bd->bi_boot_params = addr_sp;
69459791	257	debug ("Reserving %dk for boot params() at: %08lx\n",
c021880a	258	CFG_BOOTPARAMS_LEN >> 10, addr_sp);
c021880a WD	259
	260	/*
	261	* Finally, we set up a new (bigger) stack.
	262	*
	263	* Leave some safety gap for SP, force alignment on 16 byte boundary
	264	* Clear initial stack frame
	265	*/
	266	addr_sp -= 16;
	267	addr_sp &= ~0xF;
c75eba3b WD	268	s = (ulong *)addr_sp;
	269	*s-- = 0;
	270	*s-- = 0;
	271	addr_sp = (ulong)s;
69459791 WD	272	debug ("Stack Pointer at: %08lx\n", addr_sp);
69459791 WD	273
c021880a WD	274	/*
	275	* Save local variables to board info struct
	276	*/
	277	bd->bi_memstart = CFG_SDRAM_BASE; /* start of DRAM memory */
	278	bd->bi_memsize = gd->ram_size; /* size of DRAM memory in bytes */
	279	bd->bi_baudrate = gd->baudrate; /* Console Baudrate */
	280
27b207fd	281	memcpy (id, (void *)gd, sizeof (gd_t));
3e38691e WD	282
	283	/* On the purple board we copy the code in a special way
	284	* in order to solve flash problems
	285	*/
	286	#ifdef CONFIG_PURPLE
	287	copy_code(addr);
	288	#endif
	289
c021880a WD	290	relocate_code (addr_sp, id, addr);
	291
	292	/* NOTREACHED - relocate_code() does not return */
	293	}
	294	/************************************************************************
	295	*
	296	* This is the next part if the initialization sequence: we are now
	297	* running from RAM and have a "normal" C environment, i. e. global
	298	* data can be written, BSS has been cleared, the stack size in not
	299	* that critical any more, etc.
	300	*
	301	************************************************************************
	302	*/
	303
	304	void board_init_r (gd_t *id, ulong dest_addr)
	305	{
c021880a	306	cmd_tbl_t *cmdtp;
beeccf7a	307	#ifndef CFG_NO_FLASH
c021880a	308	ulong size;
beeccf7a	309	#endif
c021880a WD	310	extern void malloc_bin_reloc (void);
	311	#ifndef CFG_ENV_IS_NOWHERE
	312	extern char * env_name_spec;
	313	#endif
	314	char s, e;
	315	bd_t *bd;
	316	int i;
	317
	318	gd = id;
	319	gd->flags \|= GD_FLG_RELOC; /* tell others: relocation done */
	320
69459791	321	debug ("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
c021880a WD	322
	323	gd->reloc_off = dest_addr - CFG_MONITOR_BASE;
	324
3b57fe0a WD	325	monitor_flash_len = (ulong)&uboot_end_data - dest_addr;
3b57fe0a WD	326
c021880a WD	327	/*
	328	* We have to relocate the command table manually
	329	*/
beeccf7a	330	for (cmdtp = &__u_boot_cmd_start; cmdtp != &__u_boot_cmd_end; cmdtp++) {
c021880a WD	331	ulong addr;
	332
	333	addr = (ulong) (cmdtp->cmd) + gd->reloc_off;
	334	#if 0
	335	printf ("Command \"%s\": 0x%08lx => 0x%08lx\n",
	336	cmdtp->name, (ulong) (cmdtp->cmd), addr);
	337	#endif
	338	cmdtp->cmd =
	339	(int ()(struct cmd_tbl_s , int, int, char *[]))addr;
	340
	341	addr = (ulong)(cmdtp->name) + gd->reloc_off;
	342	cmdtp->name = (char *)addr;
	343
	344	if (cmdtp->usage) {
	345	addr = (ulong)(cmdtp->usage) + gd->reloc_off;
	346	cmdtp->usage = (char *)addr;
	347	}
	348	#ifdef CFG_LONGHELP
	349	if (cmdtp->help) {
	350	addr = (ulong)(cmdtp->help) + gd->reloc_off;
	351	cmdtp->help = (char *)addr;
	352	}
	353	#endif
	354	}
	355	/* there are some other pointer constants we must deal with */
	356	#ifndef CFG_ENV_IS_NOWHERE
	357	env_name_spec += gd->reloc_off;
	358	#endif
8bde7f77	359
beeccf7a JCPV	360	bd = gd->bd;
	361
	362	#ifndef CFG_NO_FLASH
c021880a WD	363	/* configure available FLASH banks */
	364	size = flash_init();
	365	display_flash_config (size);
beeccf7a JCPV	366	bd->bi_flashsize = size;
beeccf7a JCPV	367	#endif
c021880a	368
c021880a	369	bd->bi_flashstart = CFG_FLASH_BASE;
c021880a	370	#if CFG_MONITOR_BASE == CFG_FLASH_BASE
3b57fe0a	371	bd->bi_flashoffset = monitor_flash_len; /* reserved area for U-Boot */
c021880a WD	372	#else
	373	bd->bi_flashoffset = 0;
	374	#endif
	375
	376	/* initialize malloc() area */
	377	mem_malloc_init();
	378	malloc_bin_reloc();
	379
	380	/* relocate environment function pointers etc. */
	381	env_relocate();
	382
	383	/* board MAC address */
	384	s = getenv ("ethaddr");
	385	for (i = 0; i < 6; ++i) {
	386	bd->bi_enetaddr[i] = s ? simple_strtoul (s, &e, 16) : 0;
	387	if (s)
	388	s = (*e) ? e + 1 : e;
	389	}
	390
	391	/* IP Address */
	392	bd->bi_ip_addr = getenv_IPaddr("ipaddr");
	393
f4863a7a WD	394	#if defined(CONFIG_PCI)
	395	/*
	396	* Do pci configuration
	397	*/
	398	pci_init();
	399	#endif
	400
c021880a WD	401	/ leave this here (after malloc(), environment and PCI are working) /
	402	/* Initialize devices */
	403	devices_init ();
	404
27b207fd	405	jumptable_init ();
c021880a WD	406
	407	/* Initialize the console (after the relocation and devices init) */
	408	console_init_r ();
	409	/ /
	410
3e38691e WD	411	/* Initialize from environment */
	412	if ((s = getenv ("loadaddr")) != NULL) {
	413	load_addr = simple_strtoul (s, NULL, 16);
	414	}
7def6b34	415	#if defined(CONFIG_CMD_NET)
3e38691e WD	416	if ((s = getenv ("bootfile")) != NULL) {
	417	copy_filename (BootFile, s, sizeof (BootFile));
	418	}
b3aff0cb	419	#endif
3e38691e	420
e996bc33 JM	421	#ifdef CONFIG_CMD_NAND
	422	puts ("NAND: ");
	423	nand_init (); /* go init the NAND */
	424	#endif
	425
89a1550e JM	426	#ifdef CONFIG_CMD_SPI
	427	puts ("SPI: ");
	428	spi_init (); /* go init the SPI */
	429	puts ("ready\n");
	430	#endif
	431
3e38691e WD	432	#if defined(CONFIG_MISC_INIT_R)
	433	/* miscellaneous platform dependent initialisations */
	434	misc_init_r ();
	435	#endif
	436
7def6b34	437	#if defined(CONFIG_CMD_NET)
63ff004c	438	#if defined(CONFIG_NET_MULTI)
c021880a	439	puts ("Net: ");
63ff004c	440	#endif
c021880a WD	441	eth_initialize(gd->bd);
	442	#endif
	443
	444	/* main_loop() can return to retry autoboot, if so just run it again. */
	445	for (;;) {
	446	main_loop ();
	447	}
	448
	449	/* NOTREACHED - no way out of command loop except booting */
	450	}
	451
	452	void hang (void)
	453	{
	454	puts ("### ERROR ### Please RESET the board ###\n");
	455	for (;;);
	456	}