[people/ms/u-boot.git] / lib_arm / board.c

/*
 * (C) Copyright 2002
 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 *
 * (C) Copyright 2002
 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
 * Marius Groeger <mgroeger@sysgo.de>
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#include <common.h>
#include <command.h>
#include <devices.h>
#include <version.h>
#include <net.h>


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

#ifdef CONFIG_DRIVER_CS8900
extern void cs8900_get_enetaddr (uchar * addr);
#endif

/*
 * Begin and End of memory area for malloc(), and current "brk"
 */
static ulong mem_malloc_start = 0;
static ulong mem_malloc_end = 0;
static ulong mem_malloc_brk = 0;

#if !defined(CONFIG_MODEM_SUPPORT)
static
#endif
void mem_malloc_init (ulong dest_addr)
{
	mem_malloc_start = dest_addr;
	mem_malloc_end = dest_addr + 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);
}

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

static int init_baudrate (void)
{
	DECLARE_GLOBAL_DATA_PTR;

	uchar 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);
}

static int display_banner (void)
{

	printf ("\n\n%s\n\n", version_string);
	printf ("U-Boot code: %08lX -> %08lX  BSS: -> %08lX\n",
		_armboot_start, _armboot_end_data, _armboot_end);
#ifdef CONFIG_MODEM_SUPPORT
	puts ("Modem Support enabled\n");
#endif
#ifdef CONFIG_USE_IRQ
	printf ("IRQ Stack: %08lx\n", IRQ_STACK_START);
	printf ("FIQ Stack: %08lx\n", FIQ_STACK_START);
#endif
	return (0);
}

/*
 * WARNING: this code looks "cleaner" than the PowerPC version, but
 * has the disadvantage that you either get nothing, or everything.
 * On PowerPC, you might see "DRAM: " before the system hangs - which
 * gives a simple yet clear indication which part of the
 * initialization if failing.
 */
static int display_dram_config (void)
{
	DECLARE_GLOBAL_DATA_PTR;
	int i;

	puts ("DRAM Configuration:\n");

	for(i=0; i<CONFIG_NR_DRAM_BANKS; i++) {
		printf ("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
		print_size (gd->bd->bi_dram[i].size, "\n");
	}

	return (0);
}

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


/*
 * Breath some life into the board...
 *
 * Initialize an SMC for serial comms, and carry out some hardware
 * tests.
 *
 * 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[] = {
	cpu_init,		/* basic cpu dependent setup */
	board_init,		/* basic board dependent setup */
	interrupt_init,		/* set up exceptions */
	env_init,		/* initialize environment */
	init_baudrate,		/* initialze baudrate settings */
	serial_init,		/* serial communications setup */
	display_banner,		/* say that we are here */
	dram_init,		/* configure available RAM banks */
	display_dram_config,

	NULL,
};

void start_armboot (void)
{
	DECLARE_GLOBAL_DATA_PTR;

	ulong size;
	gd_t gd_data;
	bd_t bd_data;
	init_fnc_t **init_fnc_ptr;
#if defined(CONFIG_VFD) && !defined(CONFIG_MODEM_SUPPORT)
	unsigned long addr;
#endif

	/* Pointer is writable since we allocated a register for it */
	gd = &gd_data;
	memset (gd, 0, sizeof (gd_t));
	gd->bd = &bd_data;
	memset (gd->bd, 0, sizeof (bd_t));

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

	/* configure available FLASH banks */
	size = flash_init ();
	display_flash_config (size);

#ifdef CONFIG_VFD
#ifndef CONFIG_MODEM_SUPPORT
#ifndef PAGE_SIZE
#define PAGE_SIZE 4096
#endif
	/*
	 * reserve memory for VFD display (always full pages)
	 */
	/* armboot_real_end is defined in the board-specific linker script */
	addr = (_armboot_real_end + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
	size = vfd_setmem (addr);
	gd->fb_base = addr;
	/* round to the next page boundary */
	addr += size;
	addr = (addr + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
	mem_malloc_init (addr);
#endif /* CONFIG_MODEM_SUPPORT */
#else
	/* armboot_real_end is defined in the board-specific linker script */
	mem_malloc_init (_armboot_real_end);
#endif /* CONFIG_VFD */

#ifdef CONFIG_VFD
#ifndef CONFIG_MODEM_SUPPORT
	/* must do this after the framebuffer is allocated */
	drv_vfd_init();
#endif /* CONFIG_MODEM_SUPPORT */
#endif
	/* initialize environment */
	env_relocate ();

	/* IP Address */
	bd_data.bi_ip_addr = getenv_IPaddr ("ipaddr");

	/* MAC Address */
	{
		int i;
		ulong reg;
		char *s, *e;
		uchar tmp[64];

		i = getenv_r ("ethaddr", tmp, sizeof (tmp));
		s = (i > 0) ? tmp : NULL;

		for (reg = 0; reg < 6; ++reg) {
			bd_data.bi_enetaddr[reg] = s ? simple_strtoul (s, &e, 16) : 0;
			if (s)
				s = (*e) ? e + 1 : e;
		}
	}

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

	/* enable exceptions */
	enable_interrupts ();

#ifdef CONFIG_DRIVER_CS8900
	if (!getenv ("ethaddr")) {
		cs8900_get_enetaddr (gd->bd->bi_enetaddr);
	}
#endif

#ifdef BOARD_POST_INIT
	board_post_init ();
#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 (;;);
}

#ifdef CONFIG_MODEM_SUPPORT
/* called from main loop (common/main.c) */
extern void  dbg(const char *fmt, ...);
int mdm_init (void)
{
	char env_str[16];
	char *init_str;
	int i;
	extern char console_buffer[];
	static inline void mdm_readline(char *buf, int bufsiz);
	extern void enable_putc(void);
	extern int hwflow_onoff(int);

	enable_putc(); /* enable serial_putc() */

#ifdef CONFIG_HWFLOW
	init_str = getenv("mdm_flow_control");
	if (init_str && (strcmp(init_str, "rts/cts") == 0))
		hwflow_onoff (1);
	else
		hwflow_onoff(-1);
#endif

	for (i = 1;;i++) {
		sprintf(env_str, "mdm_init%d", i);
		if ((init_str = getenv(env_str)) != NULL) {
			serial_puts(init_str);
			serial_puts("\n");
			for(;;) {
				mdm_readline(console_buffer, CFG_CBSIZE);
				dbg("ini%d: [%s]", i, console_buffer);

				if ((strcmp(console_buffer, "OK") == 0) ||
					(strcmp(console_buffer, "ERROR") == 0)) {
					dbg("ini%d: cmd done", i);
					break;
				} else /* in case we are originating call ... */
					if (strncmp(console_buffer, "CONNECT", 7) == 0) {
						dbg("ini%d: connect", i);
						return 0;
					}
			}
		} else
			break; /* no init string - stop modem init */

		udelay(100000);
	}

	udelay(100000);

	/* final stage - wait for connect */
	for(;i > 1;) { /* if 'i' > 1 - wait for connection
				  message from modem */
		mdm_readline(console_buffer, CFG_CBSIZE);
		dbg("ini_f: [%s]", console_buffer);
		if (strncmp(console_buffer, "CONNECT", 7) == 0) {
			dbg("ini_f: connected");
			return 0;
		}
	}

	return 0;
}

/* 'inline' - We have to do it fast */
static inline void mdm_readline(char *buf, int bufsiz)
{
	char c;
	char *p;
	int n;

	n = 0;
	p = buf;
	for(;;) {
		c = serial_getc();

		/*		dbg("(%c)", c); */

		switch(c) {
		case '\r':
			break;
		case '\n':
			*p = '\0';
			return;

		default:
			if(n++ > bufsiz) {
				*p = '\0';
				return; /* sanity check */
			}
			*p = c;
			p++;
			break;
		}
	}
}
#endif	/* CONFIG_MODEM_SUPPORT */
Commit	Line	Data
c609719b WD	1	/*
	2	* (C) Copyright 2002
	3	* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
	4	*
	5	* (C) Copyright 2002
	6	* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
	7	* Marius Groeger <mgroeger@sysgo.de>
	8	*
	9	* See file CREDITS for list of people who contributed to this
	10	* project.
	11	*
	12	* This program is free software; you can redistribute it and/or
	13	* modify it under the terms of the GNU General Public License as
	14	* published by the Free Software Foundation; either version 2 of
	15	* the License, or (at your option) any later version.
	16	*
	17	* This program is distributed in the hope that it will be useful,
	18	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	20	* GNU General Public License for more details.
	21	*
	22	* You should have received a copy of the GNU General Public License
	23	* along with this program; if not, write to the Free Software
	24	* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	25	* MA 02111-1307 USA
	26	*/
	27
	28	#include <common.h>
	29	#include <command.h>
	30	#include <devices.h>
	31	#include <version.h>
	32	#include <net.h>
	33
	34
	35	const char version_string[] =
	36	U_BOOT_VERSION" (" __DATE__ " - " __TIME__ ")";
	37
	38	#ifdef CONFIG_DRIVER_CS8900
	39	extern void cs8900_get_enetaddr (uchar * addr);
	40	#endif
	41
	42	/*
	43	* Begin and End of memory area for malloc(), and current "brk"
	44	*/
	45	static ulong mem_malloc_start = 0;
	46	static ulong mem_malloc_end = 0;
	47	static ulong mem_malloc_brk = 0;
	48
a6c7ad2f WD	49	#if !defined(CONFIG_MODEM_SUPPORT)
	50	static
	51	#endif
	52	void mem_malloc_init (ulong dest_addr)
c609719b WD	53	{
c609719b WD	54	mem_malloc_start = dest_addr;
699b13a6	55	mem_malloc_end = dest_addr + CFG_MALLOC_LEN;
c609719b WD	56	mem_malloc_brk = mem_malloc_start;
	57
	58	memset ((void *) mem_malloc_start, 0,
	59	mem_malloc_end - mem_malloc_start);
	60	}
	61
	62	void *sbrk (ptrdiff_t increment)
	63	{
	64	ulong old = mem_malloc_brk;
	65	ulong new = old + increment;
	66
	67	if ((new < mem_malloc_start) \|\| (new > mem_malloc_end)) {
	68	return (NULL);
	69	}
	70	mem_malloc_brk = new;
	71
	72	return ((void *) old);
	73	}
	74
	75	/************************************************************************
	76	* Init Utilities *
	77	************************************************************************
	78	* Some of this code should be moved into the core functions,
	79	* or dropped completely,
	80	* but let's get it working (again) first...
	81	*/
	82
	83	static int init_baudrate (void)
	84	{
	85	DECLARE_GLOBAL_DATA_PTR;
	86
	87	uchar tmp[64]; /* long enough for environment variables */
	88	int i = getenv_r ("baudrate", tmp, sizeof (tmp));
	89
	90	gd->baudrate = (i > 0)
	91	? (int) simple_strtoul (tmp, NULL, 10)
	92	: CONFIG_BAUDRATE;
	93
	94	return (0);
	95	}
	96
	97	static int display_banner (void)
	98	{
	99
	100	printf ("\n\n%s\n\n", version_string);
	101	printf ("U-Boot code: %08lX -> %08lX BSS: -> %08lX\n",
	102	_armboot_start, _armboot_end_data, _armboot_end);
	103	#ifdef CONFIG_MODEM_SUPPORT
	104	puts ("Modem Support enabled\n");
	105	#endif
	106	#ifdef CONFIG_USE_IRQ
	107	printf ("IRQ Stack: %08lx\n", IRQ_STACK_START);
	108	printf ("FIQ Stack: %08lx\n", FIQ_STACK_START);
	109	#endif
	110	return (0);
	111	}
	112
	113	/*
	114	* WARNING: this code looks "cleaner" than the PowerPC version, but
	115	* has the disadvantage that you either get nothing, or everything.
	116	* On PowerPC, you might see "DRAM: " before the system hangs - which
	117	* gives a simple yet clear indication which part of the
	118	* initialization if failing.
	119	*/
120	static int display_dram_config (void)
121	{
122	DECLARE_GLOBAL_DATA_PTR;
123	int i;
124
125	puts ("DRAM Configuration:\n");
126
127	for(i=0; i<CONFIG_NR_DRAM_BANKS; i++) {
128	printf ("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
129	print_size (gd->bd->bi_dram[i].size, "\n");
130	}
131
132	return (0);
133	}
134
135	static void display_flash_config (ulong size)
136	{
137	puts ("Flash: ");
138	print_size (size, "\n");
139	}
140
141
142
143	/*
144	* Breath some life into the board...
145	*
146	* Initialize an SMC for serial comms, and carry out some hardware
147	* tests.
148	*
149	* The first part of initialization is running from Flash memory;
150	* its main purpose is to initialize the RAM so that we
151	* can relocate the monitor code to RAM.
152	*/
153
154	/*
155	* All attempts to come up with a "common" initialization sequence
156	* that works for all boards and architectures failed: some of the
157	* requirements are just _too_ different. To get rid of the resulting
158	* mess of board dependend #ifdef'ed code we now make the whole
159	* initialization sequence configurable to the user.
160	*
161	* The requirements for any new initalization function is simple: it
162	* receives a pointer to the "global data" structure as it's only
163	* argument, and returns an integer return code, where 0 means
164	* "continue" and != 0 means "fatal error, hang the system".
165	*/
166	typedef int (init_fnc_t) (void);
167
168	init_fnc_t *init_sequence[] = {
169	cpu_init, /* basic cpu dependent setup */
170	board_init, /* basic board dependent setup */
171	interrupt_init, /* set up exceptions */
172	env_init, /* initialize environment */
173	init_baudrate, /* initialze baudrate settings */
174	serial_init, /* serial communications setup */
699b13a6	175	display_banner, /* say that we are here */
c609719b WD	176	dram_init, /* configure available RAM banks */
	177	display_dram_config,
	178
	179	NULL,
	180	};
	181
	182	void start_armboot (void)
	183	{
	184	DECLARE_GLOBAL_DATA_PTR;
	185
	186	ulong size;
	187	gd_t gd_data;
	188	bd_t bd_data;
	189	init_fnc_t **init_fnc_ptr;
a6c7ad2f	190	#if defined(CONFIG_VFD) && !defined(CONFIG_MODEM_SUPPORT)
c609719b WD	191	unsigned long addr;
	192	#endif
	193
	194	/* Pointer is writable since we allocated a register for it */
	195	gd = &gd_data;
	196	memset (gd, 0, sizeof (gd_t));
	197	gd->bd = &bd_data;
	198	memset (gd->bd, 0, sizeof (bd_t));
	199
	200	for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
	201	if ((*init_fnc_ptr)() != 0) {
	202	hang ();
	203	}
	204	}
	205
	206	/* configure available FLASH banks */
	207	size = flash_init ();
	208	display_flash_config (size);
	209
	210	#ifdef CONFIG_VFD
a6c7ad2f	211	#ifndef CONFIG_MODEM_SUPPORT
c609719b WD	212	#ifndef PAGE_SIZE
	213	#define PAGE_SIZE 4096
	214	#endif
	215	/*
	216	* reserve memory for VFD display (always full pages)
	217	*/
	218	/* armboot_real_end is defined in the board-specific linker script */
	219	addr = (_armboot_real_end + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
	220	size = vfd_setmem (addr);
	221	gd->fb_base = addr;
	222	/* round to the next page boundary */
	223	addr += size;
	224	addr = (addr + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
	225	mem_malloc_init (addr);
a6c7ad2f	226	#endif /* CONFIG_MODEM_SUPPORT */
c609719b WD	227	#else
	228	/* armboot_real_end is defined in the board-specific linker script */
	229	mem_malloc_init (_armboot_real_end);
	230	#endif /* CONFIG_VFD */
	231
	232	#ifdef CONFIG_VFD
a6c7ad2f	233	#ifndef CONFIG_MODEM_SUPPORT
c609719b WD	234	/* must do this after the framebuffer is allocated */
c609719b WD	235	drv_vfd_init();
a6c7ad2f	236	#endif /* CONFIG_MODEM_SUPPORT */
c609719b WD	237	#endif
	238	/* initialize environment */
	239	env_relocate ();
	240
	241	/* IP Address */
	242	bd_data.bi_ip_addr = getenv_IPaddr ("ipaddr");
	243
	244	/* MAC Address */
	245	{
	246	int i;
	247	ulong reg;
	248	char s, e;
	249	uchar tmp[64];
	250
	251	i = getenv_r ("ethaddr", tmp, sizeof (tmp));
	252	s = (i > 0) ? tmp : NULL;
	253
	254	for (reg = 0; reg < 6; ++reg) {
	255	bd_data.bi_enetaddr[reg] = s ? simple_strtoul (s, &e, 16) : 0;
	256	if (s)
	257	s = (*e) ? e + 1 : e;
	258	}
	259	}
	260
	261	#if defined(CONFIG_MISC_INIT_R)
	262	/* miscellaneous platform dependent initialisations */
	263	misc_init_r ();
	264	#endif
	265
	266	/* enable exceptions */
	267	enable_interrupts ();
	268
	269	#ifdef CONFIG_DRIVER_CS8900
	270	if (!getenv ("ethaddr")) {
	271	cs8900_get_enetaddr (gd->bd->bi_enetaddr);
	272	}
	273	#endif
	274
	275	#ifdef BOARD_POST_INIT
	276	board_post_init ();
	277	#endif
	278
	279	/* main_loop() can return to retry autoboot, if so just run it again. */
	280	for (;;) {
	281	main_loop ();
	282	}
	283
	284	/* NOTREACHED - no way out of command loop except booting */
	285	}
	286
	287	void hang (void)
	288	{
	289	puts ("### ERROR ### Please RESET the board ###\n");
	290	for (;;);
	291	}
	292
	293	#ifdef CONFIG_MODEM_SUPPORT
	294	/* called from main loop (common/main.c) */
	295	extern void dbg(const char *fmt, ...);
	296	int mdm_init (void)
	297	{
	298	char env_str[16];
	299	char *init_str;
	300	int i;
301	extern char console_buffer[];
302	static inline void mdm_readline(char *buf, int bufsiz);
303	extern void enable_putc(void);
304	extern int hwflow_onoff(int);
305
306	enable_putc(); /* enable serial_putc() */
307
308	#ifdef CONFIG_HWFLOW
309	init_str = getenv("mdm_flow_control");
310	if (init_str && (strcmp(init_str, "rts/cts") == 0))
311	hwflow_onoff (1);
312	else
313	hwflow_onoff(-1);
314	#endif
315
316	for (i = 1;;i++) {
317	sprintf(env_str, "mdm_init%d", i);
318	if ((init_str = getenv(env_str)) != NULL) {
319	serial_puts(init_str);
320	serial_puts("\n");
321	for(;;) {
322	mdm_readline(console_buffer, CFG_CBSIZE);
323	dbg("ini%d: [%s]", i, console_buffer);
324
325	if ((strcmp(console_buffer, "OK") == 0) \|\|
326	(strcmp(console_buffer, "ERROR") == 0)) {
327	dbg("ini%d: cmd done", i);
328	break;
329	} else /* in case we are originating call ... */
330	if (strncmp(console_buffer, "CONNECT", 7) == 0) {
331	dbg("ini%d: connect", i);
332	return 0;
333	}
334	}
335	} else
336	break; /* no init string - stop modem init */
337
338	udelay(100000);
339	}
340
341	udelay(100000);
342
343	/* final stage - wait for connect */
344	for(;i > 1;) { /* if 'i' > 1 - wait for connection
345	message from modem */
346	mdm_readline(console_buffer, CFG_CBSIZE);
347	dbg("ini_f: [%s]", console_buffer);
348	if (strncmp(console_buffer, "CONNECT", 7) == 0) {
349	dbg("ini_f: connected");
350	return 0;
351	}
352	}
353
354	return 0;
355	}
356
357	/* 'inline' - We have to do it fast */
358	static inline void mdm_readline(char *buf, int bufsiz)
359	{
360	char c;
361	char *p;
362	int n;
363
364	n = 0;
365	p = buf;
366	for(;;) {
367	c = serial_getc();
368
369	/* dbg("(%c)", c); */
370
371	switch(c) {
372	case '\r':
373	break;
374	case '\n':
375	*p = '\0';
376	return;
377
378	default:
379	if(n++ > bufsiz) {
380	*p = '\0';
381	return; /* sanity check */
382	}
383	*p = c;
384	p++;
385	break;
386	}
387	}
388	}
389	#endif /* CONFIG_MODEM_SUPPORT */