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

/*
 * (C) Copyright 2002
 * Gary Jennejohn, DENX Software Engineering, <gj@denx.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
 */

/* #define DEBUG */

#include <common.h>
#include <environment.h>

static ulong flash_get_size (vu_long *addr, flash_info_t *info);

flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];


#define CMD_READ_ARRAY		0x00F000F0
#define CMD_UNLOCK1		0x00AA00AA
#define CMD_UNLOCK2		0x00550055
#define CMD_ERASE_SETUP		0x00800080
#define CMD_ERASE_CONFIRM	0x00300030
#define CMD_PROGRAM		0x00A000A0
#define CMD_UNLOCK_BYPASS	0x00200020
#define CMD_READ_MANF_ID	0x00900090
#define CMD_UNLOCK_BYPASS_RES1	0x00900090
#define CMD_UNLOCK_BYPASS_RES2	0x00000000

#define MEM_FLASH_ADDR		(*(volatile u32 *)CONFIG_SYS_FLASH_BASE)
#define MEM_FLASH_ADDR1		(*(volatile u32 *)(CONFIG_SYS_FLASH_BASE + (0x00000555 << 2)))
#define MEM_FLASH_ADDR2		(*(volatile u32 *)(CONFIG_SYS_FLASH_BASE + (0x000002AA << 2)))

#define BIT_ERASE_DONE		0x00800080
#define BIT_RDY_MASK		0x00800080
#define BIT_PROGRAM_ERROR	0x00200020
#define BIT_TIMEOUT		0x80000000	/* our flag */

#define READY 1
#define ERR   2
#define TMO   4

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

ulong flash_init (void)
{
	int i, j;
	ulong size = 0;

	for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
		ulong flashbase = 0;
		flash_info_t *info = &flash_info[i];

		/* Init: no FLASHes known */
		info->flash_id = FLASH_UNKNOWN;

		size += flash_get_size (CONFIG_SYS_FLASH_BASE, info);

		if (i == 0)
			flashbase = CONFIG_SYS_FLASH_BASE;
		else
			panic ("configured too many flash banks!\n");
		for (j = 0; j < info->sector_count; j++) {

			info->protect[j] = 0;
			info->start[j] = flashbase;

			switch (info->flash_id & FLASH_TYPEMASK) {
			case (FLASH_AM320B & FLASH_TYPEMASK):
			case (FLASH_MXLV320B & FLASH_TYPEMASK):
				/* Boot sector type: 8 x 8 + N x 128 kB */
				flashbase += (j < 8) ? 0x4000 : 0x20000;
				break;
			case (FLASH_AM640U & FLASH_TYPEMASK):
				/* Uniform sector type: 128 kB */
				flashbase += 0x20000;
				break;
			default:
				printf ("## Bad flash chip type 0x%04lX\n",
					info->flash_id & FLASH_TYPEMASK);
			}
		}
	}

	/*
	 * Protect monitor and environment sectors
	 */
	flash_protect ( FLAG_PROTECT_SET,
			CONFIG_SYS_FLASH_BASE,
			CONFIG_SYS_FLASH_BASE + monitor_flash_len - 1,
			&flash_info[0]);

	flash_protect ( FLAG_PROTECT_SET,
			CONFIG_ENV_ADDR,
			CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1, &flash_info[0]);

#ifdef CONFIG_ENV_ADDR_REDUND
	flash_protect ( FLAG_PROTECT_SET,
			CONFIG_ENV_ADDR_REDUND,
			CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SIZE_REDUND - 1,
			&flash_info[0]);
#endif

	return size;
}

/*-----------------------------------------------------------------------
 */
void flash_print_info (flash_info_t * info)
{
	int i;

	switch (info->flash_id & FLASH_VENDMASK) {
	case (FLASH_MAN_AMD & FLASH_VENDMASK):
			printf ("AMD ");		break;
	case (FLASH_MAN_FUJ & FLASH_VENDMASK):
			printf ("FUJITSU ");		break;
	case (FLASH_MAN_MX  & FLASH_VENDMASK):
			printf ("MACRONIX ");		break;
	default:	printf ("Unknown Vendor ");	break;
	}

	switch (info->flash_id & FLASH_TYPEMASK) {
	case (FLASH_AM320B & FLASH_TYPEMASK):
		printf ("2x Am29LV320DB (32Mbit)\n");
		break;
	case (FLASH_MXLV320B & FLASH_TYPEMASK):
		printf ("2x MX29LV320DB (32Mbit)\n");
		break;
	case (FLASH_AM640U & FLASH_TYPEMASK):
		printf ("2x Am29LV640D (64Mbit)\n");
		break;
	default:
		printf ("Unknown Chip Type\n");
		goto Done;
		break;
	}

	printf ("  Size: %ld MB in %d Sectors\n",
			info->size >> 20, info->sector_count);

	printf ("  Sector Start Addresses:");
	for (i = 0; i < info->sector_count; i++) {
		if ((i % 5) == 0) {
			printf ("\n   ");
		}
		printf (" %08lX%s",
			info->start[i],
			info->protect[i] ? " (RO)" : "     ");
	}
	printf ("\n");

Done:	;
}

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

int flash_erase (flash_info_t * info, int s_first, int s_last)
{
	ulong result;

#if 0
	int cflag;
#endif
	int iflag, prot, sect;
	int rc = ERR_OK;
	int chip1, chip2;

	debug ("flash_erase: s_first %d  s_last %d\n", s_first, s_last);

	/* first look for protection bits */

	if (info->flash_id == FLASH_UNKNOWN)
		return ERR_UNKNOWN_FLASH_TYPE;

	if ((s_first < 0) || (s_first > s_last)) {
		return ERR_INVAL;
	}

	switch (info->flash_id & FLASH_VENDMASK) {
	case (FLASH_MAN_AMD & FLASH_VENDMASK):	break;	/* OK */
	case (FLASH_MAN_FUJ & FLASH_VENDMASK):	break;	/* OK */
	case (FLASH_MAN_MX  & FLASH_VENDMASK):	break;	/* OK */
	default:
		debug ("## flash_erase: unknown manufacturer\n");
		return (ERR_UNKNOWN_FLASH_VENDOR);
	}

	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");
	}

	/*
	 * Disable interrupts which might cause a timeout
	 * here. Remember that our exception vectors are
	 * at address 0 in the flash, and we don't want a
	 * (ticker) exception to happen while the flash
	 * chip is in programming mode.
	 */
#if 0
	cflag = icache_status ();
	icache_disable ();
#endif
	iflag = disable_interrupts ();

	/* Start erase on unprotected sectors */
	for (sect = s_first; sect <= s_last && !ctrlc (); sect++) {

		debug ("Erasing sector %2d @ %08lX... ",
			sect, info->start[sect]);

		/* arm simple, non interrupt dependent timer */
		reset_timer_masked ();

		if (info->protect[sect] == 0) {	/* not protected */
			vu_long *addr = (vu_long *) (info->start[sect]);

			MEM_FLASH_ADDR1 = CMD_UNLOCK1;
			MEM_FLASH_ADDR2 = CMD_UNLOCK2;
			MEM_FLASH_ADDR1 = CMD_ERASE_SETUP;

			MEM_FLASH_ADDR1 = CMD_UNLOCK1;
			MEM_FLASH_ADDR2 = CMD_UNLOCK2;
			*addr = CMD_ERASE_CONFIRM;

			/* wait until flash is ready */
			chip1 = chip2 = 0;

			do {
				result = *addr;

				/* check timeout */
				if (get_timer_masked () > CONFIG_SYS_FLASH_ERASE_TOUT) {
					MEM_FLASH_ADDR1 = CMD_READ_ARRAY;
					chip1 = TMO;
					break;
				}

				if (!chip1 && (result & 0xFFFF) & BIT_ERASE_DONE)
					chip1 = READY;

				if (!chip1 && (result & 0xFFFF) & BIT_PROGRAM_ERROR)
					chip1 = ERR;

				if (!chip2 && (result >> 16) & BIT_ERASE_DONE)
					chip2 = READY;

				if (!chip2 && (result >> 16) & BIT_PROGRAM_ERROR)
					chip2 = ERR;

			} while (!chip1 || !chip2);

			MEM_FLASH_ADDR1 = CMD_READ_ARRAY;

			if (chip1 == ERR || chip2 == ERR) {
				rc = ERR_PROG_ERROR;
				printf ("Flash erase error\n");
				goto outahere;
			}
			if (chip1 == TMO) {
				rc = ERR_TIMOUT;
				printf ("Flash erase timeout error\n");
				goto outahere;
			}
		}
	}

outahere:
	/* allow flash to settle - wait 10 ms */
	udelay_masked (10000);

	if (iflag)
		enable_interrupts ();

#if 0
	if (cflag)
		icache_enable ();
#endif
	return rc;
}

/*-----------------------------------------------------------------------
 * Copy memory to flash
 */

static int write_word (flash_info_t * info, ulong dest, ulong data)
{
	vu_long *addr = (vu_long *) dest;
	ulong result;
	int rc = ERR_OK;

#if 0
	int cflag;
#endif
	int iflag;
	int chip1, chip2;

	/*
	 * Check if Flash is (sufficiently) erased
	 */
	result = *addr;
	if ((result & data) != data)
		return ERR_NOT_ERASED;

	/*
	 * Disable interrupts which might cause a timeout
	 * here. Remember that our exception vectors are
	 * at address 0 in the flash, and we don't want a
	 * (ticker) exception to happen while the flash
	 * chip is in programming mode.
	 */
#if 0
	cflag = icache_status ();
	icache_disable ();
#endif
	iflag = disable_interrupts ();

	MEM_FLASH_ADDR1 = CMD_UNLOCK1;
	MEM_FLASH_ADDR2 = CMD_UNLOCK2;
	MEM_FLASH_ADDR1 = CMD_PROGRAM;
	*addr = data;

	/* arm simple, non interrupt dependent timer */
	reset_timer_masked ();

	/* wait until flash is ready */
	chip1 = chip2 = 0;
	do {
		result = *addr;

		/* check timeout */
		if (get_timer_masked () > CONFIG_SYS_FLASH_WRITE_TOUT) {
			chip1 = ERR | TMO;
			break;
		}
		if (!chip1 && ((result & 0x80) == (data & 0x80)))
			chip1 = READY;

		if (!chip1 && ((result & 0xFFFF) & BIT_PROGRAM_ERROR)) {
			result = *addr;

			if ((result & 0x80) == (data & 0x80))
				chip1 = READY;
			else
				chip1 = ERR;
		}

		if (!chip2 && ((result & (0x80 << 16)) == (data & (0x80 << 16))))
			chip2 = READY;

		if (!chip2 && ((result >> 16) & BIT_PROGRAM_ERROR)) {
			result = *addr;

			if ((result & (0x80 << 16)) == (data & (0x80 << 16)))
				chip2 = READY;
			else
				chip2 = ERR;
		}

	} while (!chip1 || !chip2);

	*addr = CMD_READ_ARRAY;

	if (chip1 == ERR || chip2 == ERR || *addr != data) {
		rc = ERR_PROG_ERROR;
		printf ("Flash program error\n");
		debug ("chip1: %#x, chip2: %#x, addr: %#lx *addr: %#lx, "
		       "data: %#lx\n",
		       chip1, chip2, addr, *addr, data);
	}

	if (iflag)
		enable_interrupts ();

#if 0
	if (cflag)
		icache_enable ();
#endif

	return rc;
}

/*-----------------------------------------------------------------------
 * Copy memory to flash.
 */

int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
{
	ulong cp, wp, data;
	int l;
	int i, 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 << 24);
		}
		for (; i < 4 && cnt > 0; ++i) {
			data = (data >> 8) | (*src++ << 24);
			--cnt;
			++cp;
		}
		for (; cnt == 0 && i < 4; ++i, ++cp) {
			data = (data >> 8) | (*(uchar *) cp << 24);
		}

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

	/*
	 * handle word aligned part
	 */
	while (cnt >= 4) {
		if (((ulong)src) & 0x3) {
			for (i = 0; i < 4; i++) {
				((char *)&data)[i] = ((vu_char *)src)[i];
			}
		}
		else {
			data = *((vu_long *) src);
		}

		if ((rc = write_word (info, wp, data)) != 0) {
			goto Done;
		}
		src += 4;
		wp += 4;
		cnt -= 4;
	}

	if (cnt == 0) {
		rc = ERR_OK;
		goto Done;
	}

	/*
	 * handle unaligned tail bytes
	 */
	data = 0;
	for (i = 0, cp = wp; i < 4 && cnt > 0; ++i, ++cp) {
		data = (data >> 8) | (*src++ << 24);
		--cnt;
	}
	for (; i < 4; ++i, ++cp) {
		data = (data >> 8) | (*(uchar *) cp << 24);
	}

	rc = write_word (info, wp, data);

	Done:

	return (rc);
}

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

static ulong flash_get_size (vu_long *addr, flash_info_t *info)
{
	ulong value;

	/* Write auto select command sequence and read Manufacturer ID */
	addr[0x0555] = CMD_UNLOCK1;
	addr[0x02AA] = CMD_UNLOCK2;
	addr[0x0555] = CMD_READ_MANF_ID;

	value = addr[0];

	debug ("Manuf. ID @ 0x%08lx: 0x%08lx\n", (ulong)addr, value);

	switch (value) {
	case AMD_MANUFACT:
		info->flash_id = FLASH_MAN_AMD;
		break;
	case FUJ_MANUFACT:
		info->flash_id = FLASH_MAN_FUJ;
		break;
	case MX_MANUFACT:
		info->flash_id = FLASH_MAN_MX;
		break;
	default:
		info->flash_id = FLASH_UNKNOWN;
		info->sector_count = 0;
		info->size = 0;
		addr[0] = CMD_READ_ARRAY;	/* restore read mode */
		debug ("## flash_init: unknown manufacturer\n");
		return (0);			/* no or unknown flash	*/
	}

	value = addr[1];			/* device ID		*/

	debug ("Device ID @ 0x%08lx: 0x%08lx\n", (ulong)(&addr[1]), value);

	switch (value) {
	case AMD_ID_LV320B:
		info->flash_id += FLASH_AM320B;
		info->sector_count = 71;
		info->size = 0x00800000;

		addr[0] = CMD_READ_ARRAY;	/* restore read mode */
		break;				/* =>  8 MB		*/

	case AMD_ID_LV640U:
		info->flash_id += FLASH_AM640U;
		info->sector_count = 128;
		info->size = 0x01000000;

		addr[0] = CMD_READ_ARRAY;	/* restore read mode */
		break;				/* => 16 MB		*/

	case MX_ID_LV320B:
		info->flash_id += FLASH_MXLV320B;
		info->sector_count = 71;
		info->size = 0x00800000;

		addr[0] = CMD_READ_ARRAY;	/* restore read mode */
		break;				/* =>  8 MB		*/

	default:
		debug ("## flash_init: unknown flash chip\n");
		info->flash_id = FLASH_UNKNOWN;
		addr[0] = CMD_READ_ARRAY;	/* restore read mode */
		return (0);			/* => no or unknown flash */

	}

	if (info->sector_count > CONFIG_SYS_MAX_FLASH_SECT) {
		printf ("** ERROR: sector count %d > max (%d) **\n",
			info->sector_count, CONFIG_SYS_MAX_FLASH_SECT);
		info->sector_count = CONFIG_SYS_MAX_FLASH_SECT;
	}

	return (info->size);
}
Commit	Line	Data
f682e425 WD	1	/*
	2	* (C) Copyright 2002
	3	* Gary Jennejohn, DENX Software Engineering, <gj@denx.de>
	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	/* #define DEBUG */
	25
	26	#include <common.h>
	27	#include <environment.h>
	28
6069ff26	29	static ulong flash_get_size (vu_long addr, flash_info_t info);
f682e425	30
6d0f6bcf	31	flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];
f682e425 WD	32
	33
	34	#define CMD_READ_ARRAY 0x00F000F0
	35	#define CMD_UNLOCK1 0x00AA00AA
	36	#define CMD_UNLOCK2 0x00550055
	37	#define CMD_ERASE_SETUP 0x00800080
	38	#define CMD_ERASE_CONFIRM 0x00300030
	39	#define CMD_PROGRAM 0x00A000A0
	40	#define CMD_UNLOCK_BYPASS 0x00200020
6069ff26	41	#define CMD_READ_MANF_ID 0x00900090
b4757cee WD	42	#define CMD_UNLOCK_BYPASS_RES1 0x00900090
b4757cee WD	43	#define CMD_UNLOCK_BYPASS_RES2 0x00000000
f682e425	44
6d0f6bcf JCPV	45	#define MEM_FLASH_ADDR ((volatile u32 )CONFIG_SYS_FLASH_BASE)
	46	#define MEM_FLASH_ADDR1 ((volatile u32 )(CONFIG_SYS_FLASH_BASE + (0x00000555 << 2)))
	47	#define MEM_FLASH_ADDR2 ((volatile u32 )(CONFIG_SYS_FLASH_BASE + (0x000002AA << 2)))
f682e425 WD	48
	49	#define BIT_ERASE_DONE 0x00800080
	50	#define BIT_RDY_MASK 0x00800080
	51	#define BIT_PROGRAM_ERROR 0x00200020
	52	#define BIT_TIMEOUT 0x80000000 /* our flag */
	53
	54	#define READY 1
	55	#define ERR 2
	56	#define TMO 4
	57
	58	/*-----------------------------------------------------------------------
	59	*/
	60
	61	ulong flash_init (void)
	62	{
	63	int i, j;
	64	ulong size = 0;
	65
6d0f6bcf	66	for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
f682e425	67	ulong flashbase = 0;
6069ff26 WD	68	flash_info_t *info = &flash_info[i];
	69
	70	/* Init: no FLASHes known */
	71	info->flash_id = FLASH_UNKNOWN;
	72
6d0f6bcf	73	size += flash_get_size (CONFIG_SYS_FLASH_BASE, info);
f682e425	74
f682e425	75	if (i == 0)
6d0f6bcf	76	flashbase = CONFIG_SYS_FLASH_BASE;
f682e425 WD	77	else
f682e425 WD	78	panic ("configured too many flash banks!\n");
6069ff26 WD	79	for (j = 0; j < info->sector_count; j++) {
	80
	81	info->protect[j] = 0;
	82	info->start[j] = flashbase;
	83
	84	switch (info->flash_id & FLASH_TYPEMASK) {
	85	case (FLASH_AM320B & FLASH_TYPEMASK):
efa329cb	86	case (FLASH_MXLV320B & FLASH_TYPEMASK):
6069ff26 WD	87	/* Boot sector type: 8 x 8 + N x 128 kB */
	88	flashbase += (j < 8) ? 0x4000 : 0x20000;
	89	break;
	90	case (FLASH_AM640U & FLASH_TYPEMASK):
	91	/* Uniform sector type: 128 kB */
	92	flashbase += 0x20000;
	93	break;
	94	default:
	95	printf ("## Bad flash chip type 0x%04lX\n",
	96	info->flash_id & FLASH_TYPEMASK);
	97	}
f682e425	98	}
f682e425 WD	99	}
	100
	101	/*
	102	* Protect monitor and environment sectors
	103	*/
	104	flash_protect ( FLAG_PROTECT_SET,
6d0f6bcf JCPV	105	CONFIG_SYS_FLASH_BASE,
6d0f6bcf JCPV	106	CONFIG_SYS_FLASH_BASE + monitor_flash_len - 1,
f682e425 WD	107	&flash_info[0]);
	108
	109	flash_protect ( FLAG_PROTECT_SET,
0e8d1586 JCPV	110	CONFIG_ENV_ADDR,
0e8d1586 JCPV	111	CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1, &flash_info[0]);
f682e425	112
0e8d1586	113	#ifdef CONFIG_ENV_ADDR_REDUND
f682e425	114	flash_protect ( FLAG_PROTECT_SET,
0e8d1586 JCPV	115	CONFIG_ENV_ADDR_REDUND,
0e8d1586 JCPV	116	CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SIZE_REDUND - 1,
f682e425 WD	117	&flash_info[0]);
	118	#endif
	119
	120	return size;
	121	}
	122
	123	/*-----------------------------------------------------------------------
	124	*/
	125	void flash_print_info (flash_info_t * info)
	126	{
	127	int i;
	128
	129	switch (info->flash_id & FLASH_VENDMASK) {
6069ff26	130	case (FLASH_MAN_AMD & FLASH_VENDMASK):
1cb8e980 WD	131	printf ("AMD "); break;
	132	case (FLASH_MAN_FUJ & FLASH_VENDMASK):
	133	printf ("FUJITSU "); break;
efa329cb WD	134	case (FLASH_MAN_MX & FLASH_VENDMASK):
efa329cb WD	135	printf ("MACRONIX "); break;
1cb8e980	136	default: printf ("Unknown Vendor "); break;
f682e425 WD	137	}
	138
	139	switch (info->flash_id & FLASH_TYPEMASK) {
6069ff26	140	case (FLASH_AM320B & FLASH_TYPEMASK):
f682e425 WD	141	printf ("2x Am29LV320DB (32Mbit)\n");
f682e425 WD	142	break;
efa329cb WD	143	case (FLASH_MXLV320B & FLASH_TYPEMASK):
	144	printf ("2x MX29LV320DB (32Mbit)\n");
	145	break;
6069ff26 WD	146	case (FLASH_AM640U & FLASH_TYPEMASK):
	147	printf ("2x Am29LV640D (64Mbit)\n");
	148	break;
f682e425 WD	149	default:
	150	printf ("Unknown Chip Type\n");
	151	goto Done;
	152	break;
	153	}
	154
	155	printf (" Size: %ld MB in %d Sectors\n",
	156	info->size >> 20, info->sector_count);
	157
	158	printf (" Sector Start Addresses:");
	159	for (i = 0; i < info->sector_count; i++) {
	160	if ((i % 5) == 0) {
	161	printf ("\n ");
	162	}
	163	printf (" %08lX%s",
	164	info->start[i],
	165	info->protect[i] ? " (RO)" : " ");
	166	}
	167	printf ("\n");
	168
e86e5a07	169	Done: ;
f682e425 WD	170	}
	171
	172	/*-----------------------------------------------------------------------
	173	*/
	174
	175	int flash_erase (flash_info_t * info, int s_first, int s_last)
	176	{
	177	ulong result;
	178
	179	#if 0
	180	int cflag;
	181	#endif
	182	int iflag, prot, sect;
	183	int rc = ERR_OK;
	184	int chip1, chip2;
	185
	186	debug ("flash_erase: s_first %d s_last %d\n", s_first, s_last);
	187
	188	/* first look for protection bits */
	189
	190	if (info->flash_id == FLASH_UNKNOWN)
	191	return ERR_UNKNOWN_FLASH_TYPE;
	192
	193	if ((s_first < 0) \|\| (s_first > s_last)) {
	194	return ERR_INVAL;
	195	}
	196
3bac3513 WD	197	switch (info->flash_id & FLASH_VENDMASK) {
	198	case (FLASH_MAN_AMD & FLASH_VENDMASK): break; /* OK */
	199	case (FLASH_MAN_FUJ & FLASH_VENDMASK): break; /* OK */
efa329cb	200	case (FLASH_MAN_MX & FLASH_VENDMASK): break; /* OK */
3bac3513 WD	201	default:
	202	debug ("## flash_erase: unknown manufacturer\n");
	203	return (ERR_UNKNOWN_FLASH_VENDOR);
f682e425 WD	204	}
	205
	206	prot = 0;
	207	for (sect = s_first; sect <= s_last; ++sect) {
	208	if (info->protect[sect]) {
	209	prot++;
	210	}
	211	}
	212
	213	if (prot) {
	214	printf ("- Warning: %d protected sectors will not be erased!\n",
	215	prot);
	216	} else {
	217	printf ("\n");
	218	}
	219
	220	/*
	221	* Disable interrupts which might cause a timeout
	222	* here. Remember that our exception vectors are
	223	* at address 0 in the flash, and we don't want a
	224	* (ticker) exception to happen while the flash
	225	* chip is in programming mode.
	226	*/
	227	#if 0
	228	cflag = icache_status ();
	229	icache_disable ();
	230	#endif
	231	iflag = disable_interrupts ();
	232
	233	/* Start erase on unprotected sectors */
	234	for (sect = s_first; sect <= s_last && !ctrlc (); sect++) {
	235
	236	debug ("Erasing sector %2d @ %08lX... ",
	237	sect, info->start[sect]);
	238
	239	/* arm simple, non interrupt dependent timer */
	240	reset_timer_masked ();
	241
	242	if (info->protect[sect] == 0) { /* not protected */
	243	vu_long addr = (vu_long ) (info->start[sect]);
	244
	245	MEM_FLASH_ADDR1 = CMD_UNLOCK1;
	246	MEM_FLASH_ADDR2 = CMD_UNLOCK2;
	247	MEM_FLASH_ADDR1 = CMD_ERASE_SETUP;
	248
	249	MEM_FLASH_ADDR1 = CMD_UNLOCK1;
	250	MEM_FLASH_ADDR2 = CMD_UNLOCK2;
	251	*addr = CMD_ERASE_CONFIRM;
	252
	253	/* wait until flash is ready */
	254	chip1 = chip2 = 0;
	255
	256	do {
	257	result = *addr;
	258
	259	/* check timeout */
6d0f6bcf	260	if (get_timer_masked () > CONFIG_SYS_FLASH_ERASE_TOUT) {
f682e425 WD	261	MEM_FLASH_ADDR1 = CMD_READ_ARRAY;
	262	chip1 = TMO;
	263	break;
	264	}
	265
	266	if (!chip1 && (result & 0xFFFF) & BIT_ERASE_DONE)
	267	chip1 = READY;
	268
	269	if (!chip1 && (result & 0xFFFF) & BIT_PROGRAM_ERROR)
	270	chip1 = ERR;
	271
	272	if (!chip2 && (result >> 16) & BIT_ERASE_DONE)
	273	chip2 = READY;
	274
	275	if (!chip2 && (result >> 16) & BIT_PROGRAM_ERROR)
	276	chip2 = ERR;
	277
	278	} while (!chip1 \|\| !chip2);
	279
	280	MEM_FLASH_ADDR1 = CMD_READ_ARRAY;
	281
	282	if (chip1 == ERR \|\| chip2 == ERR) {
	283	rc = ERR_PROG_ERROR;
0de7fa59	284	printf ("Flash erase error\n");
f682e425 WD	285	goto outahere;
	286	}
	287	if (chip1 == TMO) {
	288	rc = ERR_TIMOUT;
0de7fa59	289	printf ("Flash erase timeout error\n");
f682e425 WD	290	goto outahere;
f682e425 WD	291	}
f682e425 WD	292	}
	293	}
	294
	295	outahere:
	296	/* allow flash to settle - wait 10 ms */
	297	udelay_masked (10000);
	298
	299	if (iflag)
	300	enable_interrupts ();
	301
	302	#if 0
	303	if (cflag)
	304	icache_enable ();
	305	#endif
	306	return rc;
	307	}
	308
	309	/*-----------------------------------------------------------------------
	310	* Copy memory to flash
	311	*/
	312
8de7ed3a	313	static int write_word (flash_info_t * info, ulong dest, ulong data)
f682e425 WD	314	{
	315	vu_long addr = (vu_long ) dest;
	316	ulong result;
	317	int rc = ERR_OK;
	318
	319	#if 0
	320	int cflag;
	321	#endif
	322	int iflag;
	323	int chip1, chip2;
	324
	325	/*
	326	* Check if Flash is (sufficiently) erased
	327	*/
	328	result = *addr;
	329	if ((result & data) != data)
	330	return ERR_NOT_ERASED;
	331
	332	/*
	333	* Disable interrupts which might cause a timeout
	334	* here. Remember that our exception vectors are
	335	* at address 0 in the flash, and we don't want a
	336	* (ticker) exception to happen while the flash
	337	* chip is in programming mode.
	338	*/
	339	#if 0
	340	cflag = icache_status ();
	341	icache_disable ();
	342	#endif
	343	iflag = disable_interrupts ();
	344
5a3dfef7 WD	345	MEM_FLASH_ADDR1 = CMD_UNLOCK1;
	346	MEM_FLASH_ADDR2 = CMD_UNLOCK2;
	347	MEM_FLASH_ADDR1 = CMD_PROGRAM;
f682e425 WD	348	*addr = data;
	349
	350	/* arm simple, non interrupt dependent timer */
	351	reset_timer_masked ();
	352
	353	/* wait until flash is ready */
	354	chip1 = chip2 = 0;
	355	do {
	356	result = *addr;
	357
	358	/* check timeout */
6d0f6bcf	359	if (get_timer_masked () > CONFIG_SYS_FLASH_WRITE_TOUT) {
f682e425 WD	360	chip1 = ERR \| TMO;
	361	break;
	362	}
	363	if (!chip1 && ((result & 0x80) == (data & 0x80)))
	364	chip1 = READY;
	365
	366	if (!chip1 && ((result & 0xFFFF) & BIT_PROGRAM_ERROR)) {
	367	result = *addr;
	368
	369	if ((result & 0x80) == (data & 0x80))
	370	chip1 = READY;
	371	else
	372	chip1 = ERR;
	373	}
	374
	375	if (!chip2 && ((result & (0x80 << 16)) == (data & (0x80 << 16))))
	376	chip2 = READY;
	377
	378	if (!chip2 && ((result >> 16) & BIT_PROGRAM_ERROR)) {
	379	result = *addr;
	380
	381	if ((result & (0x80 << 16)) == (data & (0x80 << 16)))
	382	chip2 = READY;
	383	else
	384	chip2 = ERR;
	385	}
	386
	387	} while (!chip1 \|\| !chip2);
	388
	389	*addr = CMD_READ_ARRAY;
	390
0de7fa59	391	if (chip1 == ERR \|\| chip2 == ERR \|\| *addr != data) {
f682e425	392	rc = ERR_PROG_ERROR;
0de7fa59 WD	393	printf ("Flash program error\n");
	394	debug ("chip1: %#x, chip2: %#x, addr: %#lx *addr: %#lx, "
	395	"data: %#lx\n",
	396	chip1, chip2, addr, *addr, data);
	397	}
f682e425 WD	398
	399	if (iflag)
	400	enable_interrupts ();
	401
	402	#if 0
	403	if (cflag)
	404	icache_enable ();
	405	#endif
	406
	407	return rc;
	408	}
	409
	410	/*-----------------------------------------------------------------------
	411	* Copy memory to flash.
	412	*/
	413
	414	int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
	415	{
	416	ulong cp, wp, data;
	417	int l;
	418	int i, rc;
	419
	420	wp = (addr & ~3); /* get lower word aligned address */
	421
	422	/*
	423	* handle unaligned start bytes
	424	*/
	425	if ((l = addr - wp) != 0) {
	426	data = 0;
	427	for (i = 0, cp = wp; i < l; ++i, ++cp) {
	428	data = (data >> 8) \| ((uchar ) cp << 24);
	429	}
	430	for (; i < 4 && cnt > 0; ++i) {
	431	data = (data >> 8) \| (*src++ << 24);
	432	--cnt;
	433	++cp;
	434	}
	435	for (; cnt == 0 && i < 4; ++i, ++cp) {
	436	data = (data >> 8) \| ((uchar ) cp << 24);
	437	}
	438
	439	if ((rc = write_word (info, wp, data)) != 0) {
b4757cee	440	goto Done;
f682e425 WD	441	}
	442	wp += 4;
	443	}
	444
	445	/*
	446	* handle word aligned part
	447	*/
	448	while (cnt >= 4) {
f07771cc WD	449	if (((ulong)src) & 0x3) {
	450	for (i = 0; i < 4; i++) {
	451	((char )&data)[i] = ((vu_char )src)[i];
	452	}
	453	}
	454	else {
	455	data = ((vu_long ) src);
	456	}
8bde7f77	457
f682e425	458	if ((rc = write_word (info, wp, data)) != 0) {
b4757cee	459	goto Done;
f682e425 WD	460	}
	461	src += 4;
	462	wp += 4;
	463	cnt -= 4;
	464	}
	465
	466	if (cnt == 0) {
b4757cee WD	467	rc = ERR_OK;
b4757cee WD	468	goto Done;
f682e425 WD	469	}
	470
	471	/*
	472	* handle unaligned tail bytes
	473	*/
	474	data = 0;
	475	for (i = 0, cp = wp; i < 4 && cnt > 0; ++i, ++cp) {
	476	data = (data >> 8) \| (*src++ << 24);
	477	--cnt;
	478	}
	479	for (; i < 4; ++i, ++cp) {
	480	data = (data >> 8) \| ((uchar ) cp << 24);
	481	}
	482
b4757cee WD	483	rc = write_word (info, wp, data);
	484
	485	Done:
	486
b4757cee	487	return (rc);
f682e425	488	}
6069ff26 WD	489
	490	/*-----------------------------------------------------------------------
	491	*/
	492
	493	static ulong flash_get_size (vu_long addr, flash_info_t info)
	494	{
	495	ulong value;
	496
	497	/* Write auto select command sequence and read Manufacturer ID */
	498	addr[0x0555] = CMD_UNLOCK1;
	499	addr[0x02AA] = CMD_UNLOCK2;
	500	addr[0x0555] = CMD_READ_MANF_ID;
	501
	502	value = addr[0];
	503
	504	debug ("Manuf. ID @ 0x%08lx: 0x%08lx\n", (ulong)addr, value);
	505
	506	switch (value) {
	507	case AMD_MANUFACT:
	508	info->flash_id = FLASH_MAN_AMD;
	509	break;
1cb8e980 WD	510	case FUJ_MANUFACT:
	511	info->flash_id = FLASH_MAN_FUJ;
	512	break;
efa329cb WD	513	case MX_MANUFACT:
	514	info->flash_id = FLASH_MAN_MX;
	515	break;
6069ff26 WD	516	default:
	517	info->flash_id = FLASH_UNKNOWN;
	518	info->sector_count = 0;
	519	info->size = 0;
5a3dfef7	520	addr[0] = CMD_READ_ARRAY; /* restore read mode */
6069ff26 WD	521	debug ("## flash_init: unknown manufacturer\n");
	522	return (0); /* no or unknown flash */
	523	}
	524
	525	value = addr[1]; /* device ID */
	526
	527	debug ("Device ID @ 0x%08lx: 0x%08lx\n", (ulong)(&addr[1]), value);
	528
	529	switch (value) {
	530	case AMD_ID_LV320B:
	531	info->flash_id += FLASH_AM320B;
	532	info->sector_count = 71;
	533	info->size = 0x00800000;
	534
5a3dfef7	535	addr[0] = CMD_READ_ARRAY; /* restore read mode */
6069ff26 WD	536	break; /* => 8 MB */
	537
	538	case AMD_ID_LV640U:
	539	info->flash_id += FLASH_AM640U;
	540	info->sector_count = 128;
	541	info->size = 0x01000000;
	542
5a3dfef7	543	addr[0] = CMD_READ_ARRAY; /* restore read mode */
6069ff26 WD	544	break; /* => 16 MB */
6069ff26 WD	545
efa329cb WD	546	case MX_ID_LV320B:
	547	info->flash_id += FLASH_MXLV320B;
	548	info->sector_count = 71;
	549	info->size = 0x00800000;
	550
5a3dfef7	551	addr[0] = CMD_READ_ARRAY; /* restore read mode */
efa329cb WD	552	break; /* => 8 MB */
efa329cb WD	553
6069ff26 WD	554	default:
	555	debug ("## flash_init: unknown flash chip\n");
	556	info->flash_id = FLASH_UNKNOWN;
5a3dfef7	557	addr[0] = CMD_READ_ARRAY; /* restore read mode */
6069ff26 WD	558	return (0); /* => no or unknown flash */
	559
	560	}
	561
6d0f6bcf	562	if (info->sector_count > CONFIG_SYS_MAX_FLASH_SECT) {
6069ff26	563	printf (" ERROR: sector count %d > max (%d) \n",
6d0f6bcf JCPV	564	info->sector_count, CONFIG_SYS_MAX_FLASH_SECT);
6d0f6bcf JCPV	565	info->sector_count = CONFIG_SYS_MAX_FLASH_SECT;
6069ff26 WD	566	}
	567
	568	return (info->size);
	569	}