[people/ms/u-boot.git] / board / utx8245 / flash.c

/*
 * (C) Copyright 2001
 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 *
 * (C) Copyright 2002
 * Gregory E. Allen, gallen@arlut.utexas.edu
 * Matthew E. Karger, karger@arlut.utexas.edu
 * Applied Research Laboratories, The University of Texas at Austin
 *
 * 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 <mpc824x.h>
#include <asm/processor.h>

#define ROM_CS0_START	0xFF800000
#define ROM_CS1_START	0xFF000000

#if defined(CONFIG_ENV_IS_IN_FLASH)
# ifndef  CONFIG_ENV_ADDR
#  define CONFIG_ENV_ADDR	(CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET)
# endif
# ifndef  CONFIG_ENV_SIZE
#  define CONFIG_ENV_SIZE	CONFIG_ENV_SECT_SIZE
# endif
# ifndef  CONFIG_ENV_SECT_SIZE
#  define CONFIG_ENV_SECT_SIZE  CONFIG_ENV_SIZE
# endif
#endif

#define	FLASH_BANK_SIZE	((uint)(16 * 1024 * 1024))	/* max 16Mbyte */
#define	MAIN_SECT_SIZE	0x10000
#define	SECT_SIZE_32KB	0x8000
#define	SECT_SIZE_8KB	0x2000

flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];

static int write_word (flash_info_t * info, ulong dest, ulong data);
#if 0
static void write_via_fpu (vu_long * addr, ulong * data);
#endif
static __inline__ unsigned long get_msr (void);
static __inline__ void set_msr (unsigned long msr);

/*flash command address offsets*/
#define ADDR0		(0x555)
#define ADDR1		(0xAAA)
#define ADDR3		(0x001)

#define FLASH_WORD_SIZE unsigned char

/*---------------------------------------------------------------------*/
/*#define	DEBUG_FLASH	1 */

/*---------------------------------------------------------------------*/

unsigned long flash_init (void)
{
	int i;		/* flash bank counter */
	int j;		/* flash device sector counter */
	int k;		/* flash size calculation loop counter */
	int N;		/* pow(2,N) is flash size, but we don't have <math.h> */
	ulong total_size = 0, device_size = 1;
	unsigned char manuf_id, device_id;

	for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) {
		vu_char *addr = (vu_char *) (CONFIG_SYS_FLASH_BASE + i * FLASH_BANK_SIZE);

		addr[0x555] = 0xAA;		/* get manuf/device info command */
		addr[0x2AA] = 0x55;		/* 3-cycle command */
		addr[0x555] = 0x90;

		manuf_id = addr[0];		/* read back manuf/device info */
		device_id = addr[1];

		addr[0x55] = 0x98;		/* CFI command */
		N = addr[0x27];			/* read back device_size = pow(2,N) */

		for (k = 0; k < N; k++)	/* calculate device_size = pow(2,N) */
			device_size *= 2;

		flash_info[i].size = device_size;
		flash_info[i].sector_count = CONFIG_SYS_MAX_FLASH_SECT;

#if defined DEBUG_FLASH
		printf ("manuf_id = %x, device_id = %x\n", manuf_id, device_id);
#endif
		/* find out what kind of flash we are using */
		if ((manuf_id == (uchar) (AMD_MANUFACT))
			&& (device_id == AMD_ID_LV033C)) {
			flash_info[i].flash_id =
					((FLASH_MAN_AMD & FLASH_VENDMASK) << 16) |
					(FLASH_AM033C & FLASH_TYPEMASK);

			/* set individual sector start addresses */
			for (j = 0; j < flash_info[i].sector_count; j++) {
				flash_info[i].start[j] =
						(CONFIG_SYS_FLASH_BASE + i * FLASH_BANK_SIZE +
						 j * MAIN_SECT_SIZE);
			}
		}

		else if ((manuf_id == (uchar) (AMD_MANUFACT)) &&
				 (device_id == AMD_ID_LV116DT)) {
			flash_info[i].flash_id =
					((FLASH_MAN_AMD & FLASH_VENDMASK) << 16) |
					(FLASH_AM160T & FLASH_TYPEMASK);

			/* set individual sector start addresses */
			for (j = 0; j < flash_info[i].sector_count; j++) {
				flash_info[i].start[j] =
						(CONFIG_SYS_FLASH_BASE + i * FLASH_BANK_SIZE +
						 j * MAIN_SECT_SIZE);

				if (j < (CONFIG_SYS_MAX_FLASH_SECT - 3)) {
					flash_info[i].start[j] =
							(CONFIG_SYS_FLASH_BASE + i * FLASH_BANK_SIZE +
							 j * MAIN_SECT_SIZE);
				} else if (j == (CONFIG_SYS_MAX_FLASH_SECT - 3)) {
					flash_info[i].start[j] =
							(flash_info[i].start[j - 1] + SECT_SIZE_32KB);

				} else {
					flash_info[i].start[j] =
							(flash_info[i].start[j - 1] + SECT_SIZE_8KB);
				}
			}
		}

		else {
			flash_info[i].flash_id = FLASH_UNKNOWN;
			addr[0] = 0xFF;
			goto Done;
		}

#if defined DEBUG_FLASH
		printf ("flash_id = 0x%08lX\n", flash_info[i].flash_id);
#endif

		addr[0] = 0xFF;

		memset (flash_info[i].protect, 0, CONFIG_SYS_MAX_FLASH_SECT);

		total_size += flash_info[i].size;
	}

	/* Protect monitor and environment sectors
	 */
#if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE
	flash_protect (FLAG_PROTECT_SET, CONFIG_SYS_MONITOR_BASE,
				   CONFIG_SYS_MONITOR_BASE + monitor_flash_len - 1,
				   &flash_info[0]);
#endif

#if defined(CONFIG_ENV_IS_IN_FLASH) && defined(CONFIG_ENV_ADDR)
	flash_protect (FLAG_PROTECT_SET, CONFIG_ENV_ADDR,
			CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1, &flash_info[0]);
#endif

  Done:
	return total_size;
}

/*-----------------------------------------------------------------------
 */
void flash_print_info (flash_info_t * info)
{
	static const char unk[] = "Unknown";
	const char *mfct = unk, *type = unk;
	unsigned int i;

	if (info->flash_id != FLASH_UNKNOWN) {
		switch (info->flash_id & FLASH_VENDMASK) {
		case FLASH_MAN_AMD:
			mfct = "AMD";
			break;
		case FLASH_MAN_FUJ:
			mfct = "FUJITSU";
			break;
		case FLASH_MAN_STM:
			mfct = "STM";
			break;
		case FLASH_MAN_SST:
			mfct = "SST";
			break;
		case FLASH_MAN_BM:
			mfct = "Bright Microelectonics";
			break;
		case FLASH_MAN_INTEL:
			mfct = "Intel";
			break;
		}

		switch (info->flash_id & FLASH_TYPEMASK) {
		case FLASH_AM033C:
			type = "AM29LV033C (32 Mbit, uniform sector size)";
			break;
		case FLASH_AM160T:
			type = "AM29LV160T (16 Mbit, top boot sector)";
			break;
		case FLASH_AM040:
			type = "AM29F040B (512K * 8, uniform sector size)";
			break;
		case FLASH_AM400B:
			type = "AM29LV400B (4 Mbit, bottom boot sect)";
			break;
		case FLASH_AM400T:
			type = "AM29LV400T (4 Mbit, top boot sector)";
			break;
		case FLASH_AM800B:
			type = "AM29LV800B (8 Mbit, bottom boot sect)";
			break;
		case FLASH_AM800T:
			type = "AM29LV800T (8 Mbit, top boot sector)";
			break;
		case FLASH_AM320B:
			type = "AM29LV320B (32 Mbit, bottom boot sect)";
			break;
		case FLASH_AM320T:
			type = "AM29LV320T (32 Mbit, top boot sector)";
			break;
		case FLASH_STM800AB:
			type = "M29W800AB (8 Mbit, bottom boot sect)";
			break;
		case FLASH_SST800A:
			type = "SST39LF/VF800 (8 Mbit, uniform sector size)";
			break;
		case FLASH_SST160A:
			type = "SST39LF/VF160 (16 Mbit, uniform sector size)";
			break;
		}
	}

	printf ("\n  Brand: %s Type: %s\n"
			"  Size: %lu KB in %d Sectors\n",
			mfct, type, info->size >> 10, info->sector_count);

	printf ("  Sector Start Addresses:");

	for (i = 0; i < info->sector_count; i++) {
		unsigned long size;
		unsigned int erased;
		unsigned long *flash = (unsigned long *) info->start[i];

		/*
		 * Check if whole sector is erased
		 */
		size = (i != (info->sector_count - 1)) ?
				(info->start[i + 1] - info->start[i]) >> 2 :
				(info->start[0] + info->size - info->start[i]) >> 2;

		for (flash = (unsigned long *) info->start[i], erased = 1;
			 (flash != (unsigned long *) info->start[i] + size) && erased;
			 flash++)
			erased = *flash == ~0x0UL;

		printf ("%s %08lX %s %s",
				(i % 5) ? "" : "\n   ",
				info->start[i],
				erased ? "E" : " ", info->protect[i] ? "RO" : "  ");
	}

	puts ("\n");
	return;
}

/*-----------------------------------------------------------------------
 */

int flash_erase (flash_info_t * info, int s_first, int s_last)
{
	volatile FLASH_WORD_SIZE *addr = (FLASH_WORD_SIZE *) (info->start[0]);
	int flag, prot, sect, l_sect;
	ulong start, now, last;
	unsigned char sh8b;

	if ((s_first < 0) || (s_first > s_last)) {
		if (info->flash_id == FLASH_UNKNOWN) {
			printf ("- missing\n");
		} else {
			printf ("- no sectors to erase\n");
		}
		return 1;
	}

	if ((info->flash_id == FLASH_UNKNOWN) ||
		(info->flash_id > (FLASH_MAN_STM | FLASH_AMD_COMP))) {
		printf ("Can't erase unknown flash type - aborted\n");
		return 1;
	}

	prot = 0;
	for (sect = s_first; sect <= s_last; ++sect) {
		if (info->protect[sect]) {
			prot++;
		}
	}

	if (prot) {
		printf ("- Warning: %d protected sectors will not be erased!\n",
				prot);
	} else {
		printf ("\n");
	}

	l_sect = -1;

	/* Check the ROM CS */
	if ((info->start[0] >= ROM_CS1_START)
		&& (info->start[0] < ROM_CS0_START))
		sh8b = 3;
	else
		sh8b = 0;

	/* Disable interrupts which might cause a timeout here */
	flag = disable_interrupts ();

	addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE) 0x00AA00AA;
	addr[ADDR1 << sh8b] = (FLASH_WORD_SIZE) 0x00550055;
	addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE) 0x00800080;
	addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE) 0x00AA00AA;
	addr[ADDR1 << sh8b] = (FLASH_WORD_SIZE) 0x00550055;

	/* Start erase on unprotected sectors */
	for (sect = s_first; sect <= s_last; sect++) {
		if (info->protect[sect] == 0) {	/* not protected */
			addr = (FLASH_WORD_SIZE *) (info->start[0] + ((info->
														   start[sect] -
														   info->
														   start[0]) <<
														  sh8b));

			if (info->flash_id & FLASH_MAN_SST) {
				addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE) 0x00AA00AA;
				addr[ADDR1 << sh8b] = (FLASH_WORD_SIZE) 0x00550055;
				addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE) 0x00800080;
				addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE) 0x00AA00AA;
				addr[ADDR1 << sh8b] = (FLASH_WORD_SIZE) 0x00550055;
				addr[0] = (FLASH_WORD_SIZE) 0x00500050;	/* block erase */
				udelay (30000);	/* wait 30 ms */
			} else {
				addr[0] = (FLASH_WORD_SIZE) 0x00300030;	/* sector erase */
			}

			l_sect = sect;
		}
	}

	/* re-enable interrupts if necessary */
	if (flag)
		enable_interrupts ();

	/* wait at least 80us - let's wait 1 ms */
	udelay (1000);

	/*
	 * We wait for the last triggered sector
	 */
	if (l_sect < 0)
		goto DONE;

	start = get_timer (0);
	last = start;
	addr = (FLASH_WORD_SIZE *) (info->start[0] + ((info->start[l_sect] -
												   info->
												   start[0]) << sh8b));
	while ((addr[0] & (FLASH_WORD_SIZE) 0x00800080) !=
		   (FLASH_WORD_SIZE) 0x00800080) {
		if ((now = get_timer (start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
			printf ("Timeout\n");
			return 1;
		}
		/* show that we're waiting */
		if ((now - last) > 1000) {	/* every second */
			serial_putc ('.');
			last = now;
		}
	}

  DONE:
	/* reset to read mode */
	addr = (FLASH_WORD_SIZE *) info->start[0];
	addr[0] = (FLASH_WORD_SIZE) 0x00F000F0;	/* reset bank */

	printf (" done\n");
	return 0;
}


/*-----------------------------------------------------------------------
 * Copy memory to flash, returns:
 * 0 - OK
 * 1 - write timeout
 * 2 - Flash not erased
 */

int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
{
	ulong cp, wp, data;
	int i, l, rc;

	wp = (addr & ~3);			/* get lower word aligned address */

	/*
	 * handle unaligned start bytes
	 */
	if ((l = addr - wp) != 0) {
		data = 0;
		for (i = 0, cp = wp; i < l; ++i, ++cp) {
			data = (data << 8) | (*(uchar *) cp);
		}
		for (; i < 4 && cnt > 0; ++i) {
			data = (data << 8) | *src++;
			--cnt;
			++cp;
		}
		for (; cnt == 0 && i < 4; ++i, ++cp) {
			data = (data << 8) | (*(uchar *) cp);
		}

		if ((rc = write_word (info, wp, data)) != 0) {
			return (rc);
		}
		wp += 4;
	}

	/*
	 * handle word aligned part
	 */
	while (cnt >= 4) {
		data = 0;
		for (i = 0; i < 4; ++i) {
			data = (data << 8) | *src++;
		}
		if ((rc = write_word (info, wp, data)) != 0) {
			return (rc);
		}
		wp += 4;
		cnt -= 4;
	}

	if (cnt == 0) {
		return (0);
	}

	/*
	 * handle unaligned tail bytes
	 */
	data = 0;
	for (i = 0, cp = wp; i < 4 && cnt > 0; ++i, ++cp) {
		data = (data << 8) | *src++;
		--cnt;
	}
	for (; i < 4; ++i, ++cp) {
		data = (data << 8) | (*(uchar *) cp);
	}

	return (write_word (info, wp, data));
}


/*-----------------------------------------------------------------------
 * Write a word to Flash, returns:
 * 0 - OK
 * 1 - write timeout
 * 2 - Flash not erased
 */
static int write_word (flash_info_t * info, ulong dest, ulong data)
{
	volatile FLASH_WORD_SIZE *addr2 = (FLASH_WORD_SIZE *) info->start[0];
	volatile FLASH_WORD_SIZE *dest2;
	volatile FLASH_WORD_SIZE *data2 = (FLASH_WORD_SIZE *) & data;
	ulong start;
	int flag;
	int i;
	unsigned char sh8b;

	/* Check the ROM CS */
	if ((info->start[0] >= ROM_CS1_START)
		&& (info->start[0] < ROM_CS0_START))
		sh8b = 3;
	else
		sh8b = 0;

	dest2 = (FLASH_WORD_SIZE *) (((dest - info->start[0]) << sh8b) +
								 info->start[0]);

	/* Check if Flash is (sufficiently) erased */
	if ((*dest2 & (FLASH_WORD_SIZE) data) != (FLASH_WORD_SIZE) data) {
		return (2);
	}
	/* Disable interrupts which might cause a timeout here */
	flag = disable_interrupts ();

	for (i = 0; i < 4 / sizeof (FLASH_WORD_SIZE); i++) {
		addr2[ADDR0 << sh8b] = (FLASH_WORD_SIZE) 0x00AA00AA;
		addr2[ADDR1 << sh8b] = (FLASH_WORD_SIZE) 0x00550055;
		addr2[ADDR0 << sh8b] = (FLASH_WORD_SIZE) 0x00A000A0;

		dest2[i << sh8b] = data2[i];

		/* re-enable interrupts if necessary */
		if (flag)
			enable_interrupts ();

		/* data polling for D7 */
		start = get_timer (0);
		while ((dest2[i << sh8b] & (FLASH_WORD_SIZE) 0x00800080) !=
			   (data2[i] & (FLASH_WORD_SIZE) 0x00800080)) {
			if (get_timer (start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
				return (1);
			}
		}
	}

	return (0);
}

/*-----------------------------------------------------------------------
 */
#if 0
static void write_via_fpu (vu_long * addr, ulong * data)
{
	__asm__ __volatile__ ("lfd  1, 0(%0)"::"r" (data));
	__asm__ __volatile__ ("stfd 1, 0(%0)"::"r" (addr));
}
#endif

/*-----------------------------------------------------------------------
 */
static __inline__ unsigned long get_msr (void)
{
	unsigned long msr;

	__asm__ __volatile__ ("mfmsr %0":"=r" (msr):);

	return msr;
}

static __inline__ void set_msr (unsigned long msr)
{
	__asm__ __volatile__ ("mtmsr %0"::"r" (msr));
}
Commit	Line	Data
fe8c2806 WD	1	/*
	2	* (C) Copyright 2001
	3	* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
	4	*
	5	* (C) Copyright 2002
	6	* Gregory E. Allen, gallen@arlut.utexas.edu
	7	* Matthew E. Karger, karger@arlut.utexas.edu
	8	* Applied Research Laboratories, The University of Texas at Austin
	9	*
	10	* See file CREDITS for list of people who contributed to this
	11	* project.
	12	*
	13	* This program is free software; you can redistribute it and/or
	14	* modify it under the terms of the GNU General Public License as
	15	* published by the Free Software Foundation; either version 2 of
	16	* the License, or (at your option) any later version.
	17	*
	18	* This program is distributed in the hope that it will be useful,
	19	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	20	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	21	* GNU General Public License for more details.
	22	*
	23	* You should have received a copy of the GNU General Public License
	24	* along with this program; if not, write to the Free Software
	25	* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	26	* MA 02111-1307 USA
	27	*/
	28
	29	#include <common.h>
	30	#include <mpc824x.h>
	31	#include <asm/processor.h>
	32
	33	#define ROM_CS0_START 0xFF800000
	34	#define ROM_CS1_START 0xFF000000
	35
5a1aceb0	36	#if defined(CONFIG_ENV_IS_IN_FLASH)
0e8d1586	37	# ifndef CONFIG_ENV_ADDR
6d0f6bcf	38	# define CONFIG_ENV_ADDR (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET)
fe8c2806	39	# endif
0e8d1586 JCPV	40	# ifndef CONFIG_ENV_SIZE
0e8d1586 JCPV	41	# define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE
fe8c2806	42	# endif
0e8d1586 JCPV	43	# ifndef CONFIG_ENV_SECT_SIZE
0e8d1586 JCPV	44	# define CONFIG_ENV_SECT_SIZE CONFIG_ENV_SIZE
fe8c2806 WD	45	# endif
	46	#endif
	47
7a8e9bed	48	#define FLASH_BANK_SIZE ((uint)(16 * 1024 * 1024)) /* max 16Mbyte */
53677ef1	49	#define MAIN_SECT_SIZE 0x10000
fe8c2806 WD	50	#define SECT_SIZE_32KB 0x8000
	51	#define SECT_SIZE_8KB 0x2000
	52
6d0f6bcf	53	flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];
fe8c2806	54
7a8e9bed WD	55	static int write_word (flash_info_t * info, ulong dest, ulong data);
	56	#if 0
	57	static void write_via_fpu (vu_long * addr, ulong * data);
	58	#endif
	59	static __inline__ unsigned long get_msr (void);
	60	static __inline__ void set_msr (unsigned long msr);
fe8c2806 WD	61
	62	/flash command address offsets/
	63	#define ADDR0 (0x555)
	64	#define ADDR1 (0xAAA)
	65	#define ADDR3 (0x001)
	66
	67	#define FLASH_WORD_SIZE unsigned char
	68
	69	/---------------------------------------------------------------------/
	70	/#define DEBUG_FLASH 1 /
	71
	72	/---------------------------------------------------------------------/
	73
7a8e9bed	74	unsigned long flash_init (void)
fe8c2806	75	{
7a8e9bed WD	76	int i; /* flash bank counter */
	77	int j; /* flash device sector counter */
	78	int k; /* flash size calculation loop counter */
	79	int N; /* pow(2,N) is flash size, but we don't have <math.h> */
	80	ulong total_size = 0, device_size = 1;
fe8c2806 WD	81	unsigned char manuf_id, device_id;
fe8c2806 WD	82
6d0f6bcf JCPV	83	for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) {
6d0f6bcf JCPV	84	vu_char addr = (vu_char ) (CONFIG_SYS_FLASH_BASE + i * FLASH_BANK_SIZE);
7a8e9bed WD	85
	86	addr[0x555] = 0xAA; /* get manuf/device info command */
	87	addr[0x2AA] = 0x55; /* 3-cycle command */
	88	addr[0x555] = 0x90;
	89
	90	manuf_id = addr[0]; /* read back manuf/device info */
	91	device_id = addr[1];
fe8c2806	92
7a8e9bed WD	93	addr[0x55] = 0x98; /* CFI command */
7a8e9bed WD	94	N = addr[0x27]; /* read back device_size = pow(2,N) */
fe8c2806	95
7a8e9bed WD	96	for (k = 0; k < N; k++) /* calculate device_size = pow(2,N) */
	97	device_size *= 2;
	98
	99	flash_info[i].size = device_size;
6d0f6bcf	100	flash_info[i].sector_count = CONFIG_SYS_MAX_FLASH_SECT;
fe8c2806 WD	101
fe8c2806 WD	102	#if defined DEBUG_FLASH
7a8e9bed	103	printf ("manuf_id = %x, device_id = %x\n", manuf_id, device_id);
fe8c2806	104	#endif
7a8e9bed WD	105	/* find out what kind of flash we are using */
	106	if ((manuf_id == (uchar) (AMD_MANUFACT))
	107	&& (device_id == AMD_ID_LV033C)) {
	108	flash_info[i].flash_id =
	109	((FLASH_MAN_AMD & FLASH_VENDMASK) << 16) \|
	110	(FLASH_AM033C & FLASH_TYPEMASK);
	111
	112	/* set individual sector start addresses */
	113	for (j = 0; j < flash_info[i].sector_count; j++) {
	114	flash_info[i].start[j] =
6d0f6bcf	115	(CONFIG_SYS_FLASH_BASE + i * FLASH_BANK_SIZE +
7a8e9bed WD	116	j * MAIN_SECT_SIZE);
	117	}
	118	}
fe8c2806	119
7a8e9bed WD	120	else if ((manuf_id == (uchar) (AMD_MANUFACT)) &&
	121	(device_id == AMD_ID_LV116DT)) {
	122	flash_info[i].flash_id =
	123	((FLASH_MAN_AMD & FLASH_VENDMASK) << 16) \|
	124	(FLASH_AM160T & FLASH_TYPEMASK);
	125
	126	/* set individual sector start addresses */
	127	for (j = 0; j < flash_info[i].sector_count; j++) {
	128	flash_info[i].start[j] =
6d0f6bcf	129	(CONFIG_SYS_FLASH_BASE + i * FLASH_BANK_SIZE +
7a8e9bed WD	130	j * MAIN_SECT_SIZE);
7a8e9bed WD	131
6d0f6bcf	132	if (j < (CONFIG_SYS_MAX_FLASH_SECT - 3)) {
7a8e9bed	133	flash_info[i].start[j] =
6d0f6bcf	134	(CONFIG_SYS_FLASH_BASE + i * FLASH_BANK_SIZE +
7a8e9bed	135	j * MAIN_SECT_SIZE);
6d0f6bcf	136	} else if (j == (CONFIG_SYS_MAX_FLASH_SECT - 3)) {
7a8e9bed WD	137	flash_info[i].start[j] =
	138	(flash_info[i].start[j - 1] + SECT_SIZE_32KB);
	139
	140	} else {
	141	flash_info[i].start[j] =
	142	(flash_info[i].start[j - 1] + SECT_SIZE_8KB);
	143	}
	144	}
	145	}
	146
	147	else {
	148	flash_info[i].flash_id = FLASH_UNKNOWN;
	149	addr[0] = 0xFF;
	150	goto Done;
fe8c2806 WD	151	}
	152
	153	#if defined DEBUG_FLASH
	154	printf ("flash_id = 0x%08lX\n", flash_info[i].flash_id);
	155	#endif
	156
7a8e9bed	157	addr[0] = 0xFF;
fe8c2806	158
6d0f6bcf	159	memset (flash_info[i].protect, 0, CONFIG_SYS_MAX_FLASH_SECT);
fe8c2806	160
7a8e9bed WD	161	total_size += flash_info[i].size;
7a8e9bed WD	162	}
fe8c2806	163
7a8e9bed WD	164	/* Protect monitor and environment sectors
7a8e9bed WD	165	*/
6d0f6bcf JCPV	166	#if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE
	167	flash_protect (FLAG_PROTECT_SET, CONFIG_SYS_MONITOR_BASE,
	168	CONFIG_SYS_MONITOR_BASE + monitor_flash_len - 1,
7a8e9bed	169	&flash_info[0]);
fe8c2806 WD	170	#endif
fe8c2806 WD	171
0e8d1586 JCPV	172	#if defined(CONFIG_ENV_IS_IN_FLASH) && defined(CONFIG_ENV_ADDR)
	173	flash_protect (FLAG_PROTECT_SET, CONFIG_ENV_ADDR,
	174	CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1, &flash_info[0]);
fe8c2806 WD	175	#endif
fe8c2806 WD	176
7a8e9bed WD	177	Done:
7a8e9bed WD	178	return total_size;
fe8c2806 WD	179	}
	180
	181	/*-----------------------------------------------------------------------
	182	*/
7a8e9bed	183	void flash_print_info (flash_info_t * info)
fe8c2806	184	{
7a8e9bed WD	185	static const char unk[] = "Unknown";
	186	const char mfct = unk, type = unk;
	187	unsigned int i;
	188
	189	if (info->flash_id != FLASH_UNKNOWN) {
	190	switch (info->flash_id & FLASH_VENDMASK) {
	191	case FLASH_MAN_AMD:
	192	mfct = "AMD";
	193	break;
	194	case FLASH_MAN_FUJ:
	195	mfct = "FUJITSU";
	196	break;
	197	case FLASH_MAN_STM:
	198	mfct = "STM";
	199	break;
	200	case FLASH_MAN_SST:
	201	mfct = "SST";
	202	break;
	203	case FLASH_MAN_BM:
	204	mfct = "Bright Microelectonics";
	205	break;
	206	case FLASH_MAN_INTEL:
	207	mfct = "Intel";
	208	break;
	209	}
	210
	211	switch (info->flash_id & FLASH_TYPEMASK) {
	212	case FLASH_AM033C:
	213	type = "AM29LV033C (32 Mbit, uniform sector size)";
	214	break;
	215	case FLASH_AM160T:
	216	type = "AM29LV160T (16 Mbit, top boot sector)";
	217	break;
	218	case FLASH_AM040:
	219	type = "AM29F040B (512K * 8, uniform sector size)";
	220	break;
	221	case FLASH_AM400B:
	222	type = "AM29LV400B (4 Mbit, bottom boot sect)";
	223	break;
	224	case FLASH_AM400T:
	225	type = "AM29LV400T (4 Mbit, top boot sector)";
	226	break;
	227	case FLASH_AM800B:
	228	type = "AM29LV800B (8 Mbit, bottom boot sect)";
	229	break;
	230	case FLASH_AM800T:
	231	type = "AM29LV800T (8 Mbit, top boot sector)";
	232	break;
	233	case FLASH_AM320B:
	234	type = "AM29LV320B (32 Mbit, bottom boot sect)";
	235	break;
	236	case FLASH_AM320T:
	237	type = "AM29LV320T (32 Mbit, top boot sector)";
	238	break;
	239	case FLASH_STM800AB:
	240	type = "M29W800AB (8 Mbit, bottom boot sect)";
	241	break;
	242	case FLASH_SST800A:
	243	type = "SST39LF/VF800 (8 Mbit, uniform sector size)";
	244	break;
	245	case FLASH_SST160A:
	246	type = "SST39LF/VF160 (16 Mbit, uniform sector size)";
	247	break;
	248	}
249	}
250
251	printf ("\n Brand: %s Type: %s\n"
252	" Size: %lu KB in %d Sectors\n",
253	mfct, type, info->size >> 10, info->sector_count);
254
255	printf (" Sector Start Addresses:");
256
257	for (i = 0; i < info->sector_count; i++) {
258	unsigned long size;
259	unsigned int erased;
260	unsigned long flash = (unsigned long ) info->start[i];
261
262	/*
263	* Check if whole sector is erased
264	*/
265	size = (i != (info->sector_count - 1)) ?
266	(info->start[i + 1] - info->start[i]) >> 2 :
267	(info->start[0] + info->size - info->start[i]) >> 2;
268
269	for (flash = (unsigned long *) info->start[i], erased = 1;
270	(flash != (unsigned long *) info->start[i] + size) && erased;
271	flash++)
272	erased = *flash == ~0x0UL;
273
274	printf ("%s %08lX %s %s",
275	(i % 5) ? "" : "\n ",
276	info->start[i],
277	erased ? "E" : " ", info->protect[i] ? "RO" : " ");
278	}
279
280	puts ("\n");
281	return;
fe8c2806 WD	282	}
	283
	284	/*-----------------------------------------------------------------------
	285	*/
	286
7a8e9bed	287	int flash_erase (flash_info_t * info, int s_first, int s_last)
fe8c2806	288	{
7a8e9bed WD	289	volatile FLASH_WORD_SIZE addr = (FLASH_WORD_SIZE ) (info->start[0]);
	290	int flag, prot, sect, l_sect;
	291	ulong start, now, last;
	292	unsigned char sh8b;
	293
	294	if ((s_first < 0) \|\| (s_first > s_last)) {
	295	if (info->flash_id == FLASH_UNKNOWN) {
	296	printf ("- missing\n");
	297	} else {
	298	printf ("- no sectors to erase\n");
	299	}
	300	return 1;
	301	}
	302
	303	if ((info->flash_id == FLASH_UNKNOWN) \|\|
	304	(info->flash_id > (FLASH_MAN_STM \| FLASH_AMD_COMP))) {
	305	printf ("Can't erase unknown flash type - aborted\n");
	306	return 1;
	307	}
	308
	309	prot = 0;
	310	for (sect = s_first; sect <= s_last; ++sect) {
	311	if (info->protect[sect]) {
	312	prot++;
	313	}
	314	}
	315
	316	if (prot) {
	317	printf ("- Warning: %d protected sectors will not be erased!\n",
	318	prot);
	319	} else {
	320	printf ("\n");
	321	}
	322
	323	l_sect = -1;
	324
	325	/* Check the ROM CS */
	326	if ((info->start[0] >= ROM_CS1_START)
	327	&& (info->start[0] < ROM_CS0_START))
	328	sh8b = 3;
	329	else
	330	sh8b = 0;
fe8c2806 WD	331
fe8c2806 WD	332	/* Disable interrupts which might cause a timeout here */
7a8e9bed WD	333	flag = disable_interrupts ();
	334
	335	addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE) 0x00AA00AA;
	336	addr[ADDR1 << sh8b] = (FLASH_WORD_SIZE) 0x00550055;
	337	addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE) 0x00800080;
	338	addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE) 0x00AA00AA;
	339	addr[ADDR1 << sh8b] = (FLASH_WORD_SIZE) 0x00550055;
	340
	341	/* Start erase on unprotected sectors */
	342	for (sect = s_first; sect <= s_last; sect++) {
	343	if (info->protect[sect] == 0) { /* not protected */
	344	addr = (FLASH_WORD_SIZE *) (info->start[0] + ((info->
	345	start[sect] -
	346	info->
	347	start[0]) <<
	348	sh8b));
	349
	350	if (info->flash_id & FLASH_MAN_SST) {
	351	addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE) 0x00AA00AA;
	352	addr[ADDR1 << sh8b] = (FLASH_WORD_SIZE) 0x00550055;
	353	addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE) 0x00800080;
	354	addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE) 0x00AA00AA;
	355	addr[ADDR1 << sh8b] = (FLASH_WORD_SIZE) 0x00550055;
	356	addr[0] = (FLASH_WORD_SIZE) 0x00500050; /* block erase */
	357	udelay (30000); /* wait 30 ms */
	358	} else {
	359	addr[0] = (FLASH_WORD_SIZE) 0x00300030; /* sector erase */
fe8c2806 WD	360	}
fe8c2806 WD	361
fe8c2806	362	l_sect = sect;
7a8e9bed WD	363	}
	364	}
	365
	366	/* re-enable interrupts if necessary */
	367	if (flag)
	368	enable_interrupts ();
	369
	370	/* wait at least 80us - let's wait 1 ms */
	371	udelay (1000);
	372
	373	/*
	374	* We wait for the last triggered sector
	375	*/
	376	if (l_sect < 0)
	377	goto DONE;
	378
	379	start = get_timer (0);
	380	last = start;
	381	addr = (FLASH_WORD_SIZE *) (info->start[0] + ((info->start[l_sect] -
	382	info->
	383	start[0]) << sh8b));
	384	while ((addr[0] & (FLASH_WORD_SIZE) 0x00800080) !=
	385	(FLASH_WORD_SIZE) 0x00800080) {
6d0f6bcf	386	if ((now = get_timer (start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
7a8e9bed WD	387	printf ("Timeout\n");
	388	return 1;
	389	}
	390	/* show that we're waiting */
	391	if ((now - last) > 1000) { /* every second */
	392	serial_putc ('.');
	393	last = now;
	394	}
	395	}
	396
	397	DONE:
	398	/* reset to read mode */
	399	addr = (FLASH_WORD_SIZE *) info->start[0];
	400	addr[0] = (FLASH_WORD_SIZE) 0x00F000F0; /* reset bank */
	401
	402	printf (" done\n");
	403	return 0;
fe8c2806 WD	404	}
	405
	406
	407	/*-----------------------------------------------------------------------
	408	* Copy memory to flash, returns:
	409	* 0 - OK
	410	* 1 - write timeout
	411	* 2 - Flash not erased
	412	*/
	413
7a8e9bed	414	int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
fe8c2806	415	{
7a8e9bed WD	416	ulong cp, wp, data;
	417	int i, l, rc;
	418
	419	wp = (addr & ~3); /* get lower word aligned address */
	420
	421	/*
	422	* handle unaligned start bytes
	423	*/
	424	if ((l = addr - wp) != 0) {
	425	data = 0;
	426	for (i = 0, cp = wp; i < l; ++i, ++cp) {
	427	data = (data << 8) \| ((uchar ) cp);
	428	}
	429	for (; i < 4 && cnt > 0; ++i) {
	430	data = (data << 8) \| *src++;
	431	--cnt;
	432	++cp;
	433	}
	434	for (; cnt == 0 && i < 4; ++i, ++cp) {
	435	data = (data << 8) \| ((uchar ) cp);
	436	}
	437
	438	if ((rc = write_word (info, wp, data)) != 0) {
	439	return (rc);
	440	}
	441	wp += 4;
	442	}
	443
	444	/*
	445	* handle word aligned part
	446	*/
	447	while (cnt >= 4) {
	448	data = 0;
	449	for (i = 0; i < 4; ++i) {
	450	data = (data << 8) \| *src++;
	451	}
	452	if ((rc = write_word (info, wp, data)) != 0) {
	453	return (rc);
	454	}
	455	wp += 4;
	456	cnt -= 4;
	457	}
	458
	459	if (cnt == 0) {
	460	return (0);
	461	}
	462
	463	/*
	464	* handle unaligned tail bytes
	465	*/
	466	data = 0;
	467	for (i = 0, cp = wp; i < 4 && cnt > 0; ++i, ++cp) {
	468	data = (data << 8) \| *src++;
	469	--cnt;
	470	}
	471	for (; i < 4; ++i, ++cp) {
	472	data = (data << 8) \| ((uchar ) cp);
	473	}
	474
	475	return (write_word (info, wp, data));
fe8c2806 WD	476	}
	477
	478
	479	/*-----------------------------------------------------------------------
	480	* Write a word to Flash, returns:
	481	* 0 - OK
	482	* 1 - write timeout
	483	* 2 - Flash not erased
	484	*/
7a8e9bed	485	static int write_word (flash_info_t * info, ulong dest, ulong data)
fe8c2806	486	{
7a8e9bed	487	volatile FLASH_WORD_SIZE addr2 = (FLASH_WORD_SIZE ) info->start[0];
fe8c2806	488	volatile FLASH_WORD_SIZE *dest2;
7a8e9bed	489	volatile FLASH_WORD_SIZE data2 = (FLASH_WORD_SIZE ) & data;
fe8c2806 WD	490	ulong start;
	491	int flag;
	492	int i;
	493	unsigned char sh8b;
	494
7a8e9bed WD	495	/* Check the ROM CS */
	496	if ((info->start[0] >= ROM_CS1_START)
	497	&& (info->start[0] < ROM_CS0_START))
	498	sh8b = 3;
	499	else
	500	sh8b = 0;
	501
	502	dest2 = (FLASH_WORD_SIZE *) (((dest - info->start[0]) << sh8b) +
	503	info->start[0]);
	504
	505	/* Check if Flash is (sufficiently) erased */
	506	if ((*dest2 & (FLASH_WORD_SIZE) data) != (FLASH_WORD_SIZE) data) {
	507	return (2);
	508	}
	509	/* Disable interrupts which might cause a timeout here */
	510	flag = disable_interrupts ();
	511
	512	for (i = 0; i < 4 / sizeof (FLASH_WORD_SIZE); i++) {
	513	addr2[ADDR0 << sh8b] = (FLASH_WORD_SIZE) 0x00AA00AA;
	514	addr2[ADDR1 << sh8b] = (FLASH_WORD_SIZE) 0x00550055;
	515	addr2[ADDR0 << sh8b] = (FLASH_WORD_SIZE) 0x00A000A0;
	516
	517	dest2[i << sh8b] = data2[i];
	518
	519	/* re-enable interrupts if necessary */
	520	if (flag)
	521	enable_interrupts ();
	522
	523	/* data polling for D7 */
	524	start = get_timer (0);
	525	while ((dest2[i << sh8b] & (FLASH_WORD_SIZE) 0x00800080) !=
	526	(data2[i] & (FLASH_WORD_SIZE) 0x00800080)) {
6d0f6bcf	527	if (get_timer (start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
7a8e9bed WD	528	return (1);
	529	}
	530	}
	531	}
	532
	533	return (0);
	534	}
	535
	536	/*-----------------------------------------------------------------------
	537	*/
	538	#if 0
	539	static void write_via_fpu (vu_long * addr, ulong * data)
	540	{
	541	__asm__ __volatile__ ("lfd 1, 0(%0)"::"r" (data));
	542	__asm__ __volatile__ ("stfd 1, 0(%0)"::"r" (addr));
fe8c2806	543	}
7a8e9bed WD	544	#endif
7a8e9bed WD	545
fe8c2806 WD	546	/*-----------------------------------------------------------------------
fe8c2806 WD	547	*/
7a8e9bed WD	548	static __inline__ unsigned long get_msr (void)
	549	{
	550	unsigned long msr;
	551
	552	__asm__ __volatile__ ("mfmsr %0":"=r" (msr):);
	553
	554	return msr;
	555	}
	556
	557	static __inline__ void set_msr (unsigned long msr)
	558	{
	559	__asm__ __volatile__ ("mtmsr %0"::"r" (msr));
	560	}