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

/*
 * (C) Copyright 2000
 * Wolfgang Denk, DENX Software Engineering, wd@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
 *
 * Hacked for the Hymod board by Murray.Jensen@csiro.au, 20-Oct-00
 */

#include <common.h>
#include <mpc8260.h>
#include <board/hymod/flash.h>

flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];	/* info for FLASH chips */

/*-----------------------------------------------------------------------
 * Protection Flags:
 */
#define FLAG_PROTECT_SET	0x01
#define FLAG_PROTECT_CLEAR	0x02

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

/*
 * probe for flash bank at address "base" and store info about it
 * in the flash_info entry "fip". Fatal error if nothing there.
 */
static void
bank_probe (flash_info_t *fip, volatile bank_addr_t base)
{
	volatile bank_addr_t addr;
	bank_word_t word;
	int i;

	/* reset the flash */
	*base = BANK_CMD_RST;

	/* put flash into read id mode */
	*base = BANK_CMD_RD_ID;

	/* check the manufacturer id - must be intel */
	word = *BANK_REG_MAN_CODE (base);
	if (word != BANK_FILL_WORD (INTEL_MANUFACT&0xff))
		panic ("\nbad manufacturer's code (0x%08lx) at addr 0x%08lx",
			(unsigned long)word, (unsigned long)base);

	/* check the device id */
	word = *BANK_REG_DEV_CODE (base);
	switch (word) {

	case BANK_FILL_WORD (INTEL_ID_28F320J5&0xff):
		fip->flash_id = FLASH_MAN_INTEL | FLASH_28F320J5;
		fip->sector_count = 32;
		break;

	case BANK_FILL_WORD (INTEL_ID_28F640J5&0xff):
		fip->flash_id = FLASH_MAN_INTEL | FLASH_28F640J5;
		fip->sector_count = 64;
		break;

	case BANK_FILL_WORD (INTEL_ID_28F320J3A&0xff):
		fip->flash_id = FLASH_MAN_INTEL | FLASH_28F320J3A;
		fip->sector_count = 32;
		break;

	case BANK_FILL_WORD (INTEL_ID_28F640J3A&0xff):
		fip->flash_id = FLASH_MAN_INTEL | FLASH_28F640J3A;
		fip->sector_count = 64;
		break;

	case BANK_FILL_WORD (INTEL_ID_28F128J3A&0xff):
		fip->flash_id = FLASH_MAN_INTEL | FLASH_28F128J3A;
		fip->sector_count = 128;
		break;

	default:
		panic ("\nbad device code (0x%08lx) at addr 0x%08lx",
			(unsigned long)word, (unsigned long)base);
	}

	if (fip->sector_count >= CONFIG_SYS_MAX_FLASH_SECT)
		panic ("\ntoo many sectors (%d) in flash at address 0x%08lx",
			fip->sector_count, (unsigned long)base);

	addr = base;
	for (i = 0; i < fip->sector_count; i++) {
		fip->start[i] = (unsigned long)addr;
		fip->protect[i] = 0;
		addr = BANK_ADDR_NEXT_BLK (addr);
	}

	fip->size = (bank_size_t)addr - (bank_size_t)base;

	/* reset the flash */
	*base = BANK_CMD_RST;
}

static void
bank_reset (flash_info_t *info, int sect)
{
	volatile bank_addr_t addr = (bank_addr_t)info->start[sect];

#ifdef FLASH_DEBUG
	printf ("writing reset cmd to addr 0x%08lx\n", (unsigned long)addr);
#endif

	*addr = BANK_CMD_RST;
}

static void
bank_erase_init (flash_info_t *info, int sect)
{
	volatile bank_addr_t addr = (bank_addr_t)info->start[sect];
	int flag;

#ifdef FLASH_DEBUG
	printf ("erasing sector %d, addr = 0x%08lx\n",
		sect, (unsigned long)addr);
#endif

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

#ifdef FLASH_DEBUG
	printf ("writing erase cmd to addr 0x%08lx\n", (unsigned long)addr);
#endif
	*addr = BANK_CMD_ERASE1;
	*addr = BANK_CMD_ERASE2;

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

static int
bank_erase_poll (flash_info_t *info, int sect)
{
	volatile bank_addr_t addr = (bank_addr_t)info->start[sect];
	bank_word_t stat = *addr;

#ifdef FLASH_DEBUG
	printf ("checking status at addr 0x%08lx [0x%08lx]\n",
		(unsigned long)addr, (unsigned long)stat);
#endif

	if ((stat & BANK_STAT_RDY) == BANK_STAT_RDY) {
		if ((stat & BANK_STAT_ERR) != 0) {
			printf ("failed on sector %d [0x%08lx] at "
				"address 0x%08lx\n", sect,
				(unsigned long)stat, (unsigned long)addr);
			*addr = BANK_CMD_CLR_STAT;
			return (-1);
		}
		else
			return (1);
	}
	else
		return (0);
}

static int
bank_write_word (volatile bank_addr_t addr, bank_word_t value)
{
	bank_word_t stat;
	ulong start;
	int flag, retval;

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

	*addr = BANK_CMD_PROG;

	*addr = value;

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

	retval = 0;

	/* data polling for D7 */
	start = get_timer (0);
	do {
		if (get_timer (start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
			retval = 1;
			goto done;
		}
		stat = *addr;
	} while ((stat & BANK_STAT_RDY) != BANK_STAT_RDY);

	if ((stat & BANK_STAT_ERR) != 0) {
		printf ("flash program failed [0x%08lx] at address 0x%08lx\n",
			(unsigned long)stat, (unsigned long)addr);
		*addr = BANK_CMD_CLR_STAT;
		retval = 3;
	}

done:
	/* reset to read mode */
	*addr = BANK_CMD_RST;

	return (retval);
}

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

unsigned long
flash_init (void)
{
	int i;

	/* Init: no FLASHes known */
	for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
		flash_info[i].flash_id = FLASH_UNKNOWN;
	}

	bank_probe (&flash_info[0], (bank_addr_t)CONFIG_SYS_FLASH_BASE);

	/*
	 * protect monitor and environment sectors
	 */

#if CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
	(void)flash_protect (FLAG_PROTECT_SET,
		      CONFIG_SYS_MONITOR_BASE,
		      CONFIG_SYS_MONITOR_BASE+monitor_flash_len-1,
		      &flash_info[0]);
#endif

#if defined(CONFIG_SYS_FLASH_ENV_ADDR)
	(void)flash_protect (FLAG_PROTECT_SET,
		      CONFIG_SYS_FLASH_ENV_ADDR,
#if defined(CONFIG_SYS_FLASH_ENV_BUF)
		      CONFIG_SYS_FLASH_ENV_ADDR + CONFIG_SYS_FLASH_ENV_BUF - 1,
#else
		      CONFIG_SYS_FLASH_ENV_ADDR + CONFIG_SYS_FLASH_ENV_SIZE - 1,
#endif
		      &flash_info[0]);
#endif

	return flash_info[0].size;
}

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

	if (info->flash_id == FLASH_UNKNOWN) {
		printf ("missing or unknown FLASH type\n");
		return;
	}

	switch (info->flash_id & FLASH_VENDMASK) {
	case FLASH_MAN_INTEL:	printf ("INTEL ");		break;
	default:		printf ("Unknown Vendor ");	break;
	}

	switch (info->flash_id & FLASH_TYPEMASK) {
	case FLASH_28F320J5:	printf ("28F320J5 (32 Mbit, 2 x 16bit)\n");
				break;
	case FLASH_28F640J5:	printf ("28F640J5 (64 Mbit, 2 x 16bit)\n");
				break;
	case FLASH_28F320J3A:	printf ("28F320J3A (32 Mbit, 2 x 16bit)\n");
				break;
	case FLASH_28F640J3A:	printf ("28F640J3A (64 Mbit, 2 x 16bit)\n");
				break;
	case FLASH_28F128J3A:	printf ("28F320J3A (128 Mbit, 2 x 16bit)\n");
				break;
	default:		printf ("Unknown Chip Type\n");
				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");
	return;
}

/*
 * The following code cannot be run from FLASH!
 */

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

int
flash_erase (flash_info_t *info, int s_first, int s_last)
{
	int prot, sect, haderr;
	ulong start, now, last;
	int rcode = 0;

#ifdef FLASH_DEBUG
	printf ("\nflash_erase: erase %d sectors (%d to %d incl.) from\n"
		"  Bank # %d: ", s_last - s_first + 1, s_first, s_last,
		(info - flash_info) + 1);
	flash_print_info (info);
#endif

	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;
	}

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

	if (prot) {
		printf ("- Warning: %d protected sector%s will not be erased\n",
			prot, (prot > 1 ? "s" : ""));
	}

	start = get_timer (0);
	last = 0;
	haderr = 0;

	for (sect = s_first; sect <= s_last; sect++) {
		if (info->protect[sect] == 0) {	/* not protected */
			ulong estart;
			int sectdone;

			bank_erase_init (info, sect);

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

			estart = get_timer (start);

			do {
				now = get_timer (start);

				if (now - estart > CONFIG_SYS_FLASH_ERASE_TOUT) {
					printf ("Timeout (sect %d)\n", sect);
					haderr = 1;
					rcode = 1;
					break;
				}

#ifndef FLASH_DEBUG
				/* show that we're waiting */
				if ((now - last) > 1000) { /* every second */
					putc ('.');
					last = now;
				}
#endif

				sectdone = bank_erase_poll (info, sect);

				if (sectdone < 0) {
					haderr = 1;
					rcode = 1;
					break;
				}

			} while (!sectdone);

			if (haderr)
				break;
		}
	}

	if (haderr > 0)
		printf (" failed\n");
	else
		printf (" done\n");

	/* reset to read mode */
	for (sect = s_first; sect <= s_last; sect++) {
		if (info->protect[sect] == 0) {	/* not protected */
			bank_reset (info, sect);
		}
	}
	return rcode;
}

/*-----------------------------------------------------------------------
 * Write a word to Flash, returns:
 * 0 - OK
 * 1 - write timeout
 * 2 - Flash not erased
 * 3 - Program failed
 */
static int
write_word (flash_info_t *info, ulong dest, ulong data)
{
	/* Check if Flash is (sufficiently) erased */
	if ((*(ulong *)dest & data) != data)
		return (2);

	return (bank_write_word ((bank_addr_t)dest, (bank_word_t)data));
}

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

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));
}

/*-----------------------------------------------------------------------
 */
Commit	Line	Data
affae2bf WD	1	/*
	2	* (C) Copyright 2000
	3	* Wolfgang Denk, DENX Software Engineering, wd@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	*
6dd652fa	23	* Hacked for the Hymod board by Murray.Jensen@csiro.au, 20-Oct-00
affae2bf WD	24	*/
	25
	26	#include <common.h>
	27	#include <mpc8260.h>
	28	#include <board/hymod/flash.h>
	29
6d0f6bcf	30	flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
affae2bf WD	31
	32	/*-----------------------------------------------------------------------
	33	* Protection Flags:
	34	*/
	35	#define FLAG_PROTECT_SET 0x01
	36	#define FLAG_PROTECT_CLEAR 0x02
	37
affae2bf WD	38	/*-----------------------------------------------------------------------
	39	*/
	40
	41	/*
6dd652fa WD	42	* probe for flash bank at address "base" and store info about it
6dd652fa WD	43	* in the flash_info entry "fip". Fatal error if nothing there.
affae2bf	44	*/
6dd652fa	45	static void
592c5cab	46	bank_probe (flash_info_t *fip, volatile bank_addr_t base)
affae2bf	47	{
592c5cab	48	volatile bank_addr_t addr;
6dd652fa WD	49	bank_word_t word;
6dd652fa WD	50	int i;
affae2bf WD	51
affae2bf WD	52	/* reset the flash */
6dd652fa	53	*base = BANK_CMD_RST;
affae2bf	54
592c5cab	55	/* put flash into read id mode */
6dd652fa	56	*base = BANK_CMD_RD_ID;
affae2bf	57
592c5cab WD	58	/* check the manufacturer id - must be intel */
592c5cab WD	59	word = *BANK_REG_MAN_CODE (base);
6dd652fa WD	60	if (word != BANK_FILL_WORD (INTEL_MANUFACT&0xff))
	61	panic ("\nbad manufacturer's code (0x%08lx) at addr 0x%08lx",
	62	(unsigned long)word, (unsigned long)base);
affae2bf	63
6dd652fa	64	/* check the device id */
6dd652fa	65	word = *BANK_REG_DEV_CODE (base);
6dd652fa	66	switch (word) {
affae2bf	67
6dd652fa WD	68	case BANK_FILL_WORD (INTEL_ID_28F320J5&0xff):
	69	fip->flash_id = FLASH_MAN_INTEL \| FLASH_28F320J5;
	70	fip->sector_count = 32;
	71	break;
affae2bf	72
6dd652fa WD	73	case BANK_FILL_WORD (INTEL_ID_28F640J5&0xff):
	74	fip->flash_id = FLASH_MAN_INTEL \| FLASH_28F640J5;
	75	fip->sector_count = 64;
	76	break;
affae2bf	77
6dd652fa WD	78	case BANK_FILL_WORD (INTEL_ID_28F320J3A&0xff):
	79	fip->flash_id = FLASH_MAN_INTEL \| FLASH_28F320J3A;
	80	fip->sector_count = 32;
	81	break;
affae2bf	82
6dd652fa WD	83	case BANK_FILL_WORD (INTEL_ID_28F640J3A&0xff):
	84	fip->flash_id = FLASH_MAN_INTEL \| FLASH_28F640J3A;
	85	fip->sector_count = 64;
	86	break;
affae2bf	87
6dd652fa WD	88	case BANK_FILL_WORD (INTEL_ID_28F128J3A&0xff):
	89	fip->flash_id = FLASH_MAN_INTEL \| FLASH_28F128J3A;
	90	fip->sector_count = 128;
	91	break;
affae2bf	92
6dd652fa WD	93	default:
	94	panic ("\nbad device code (0x%08lx) at addr 0x%08lx",
	95	(unsigned long)word, (unsigned long)base);
	96	}
affae2bf	97
6d0f6bcf	98	if (fip->sector_count >= CONFIG_SYS_MAX_FLASH_SECT)
6dd652fa WD	99	panic ("\ntoo many sectors (%d) in flash at address 0x%08lx",
6dd652fa WD	100	fip->sector_count, (unsigned long)base);
affae2bf	101
6dd652fa WD	102	addr = base;
	103	for (i = 0; i < fip->sector_count; i++) {
	104	fip->start[i] = (unsigned long)addr;
	105	fip->protect[i] = 0;
	106	addr = BANK_ADDR_NEXT_BLK (addr);
affae2bf WD	107	}
affae2bf WD	108
6dd652fa	109	fip->size = (bank_size_t)addr - (bank_size_t)base;
592c5cab WD	110
	111	/* reset the flash */
	112	*base = BANK_CMD_RST;
affae2bf WD	113	}
	114
	115	static void
6dd652fa	116	bank_reset (flash_info_t *info, int sect)
affae2bf	117	{
592c5cab	118	volatile bank_addr_t addr = (bank_addr_t)info->start[sect];
affae2bf	119
affae2bf	120	#ifdef FLASH_DEBUG
6dd652fa	121	printf ("writing reset cmd to addr 0x%08lx\n", (unsigned long)addr);
affae2bf	122	#endif
6dd652fa WD	123
6dd652fa WD	124	*addr = BANK_CMD_RST;
affae2bf WD	125	}
	126
	127	static void
6dd652fa	128	bank_erase_init (flash_info_t *info, int sect)
affae2bf	129	{
592c5cab	130	volatile bank_addr_t addr = (bank_addr_t)info->start[sect];
affae2bf WD	131	int flag;
	132
	133	#ifdef FLASH_DEBUG
6dd652fa WD	134	printf ("erasing sector %d, addr = 0x%08lx\n",
6dd652fa WD	135	sect, (unsigned long)addr);
affae2bf WD	136	#endif
	137
	138	/* Disable intrs which might cause a timeout here */
6dd652fa	139	flag = disable_interrupts ();
affae2bf	140
affae2bf	141	#ifdef FLASH_DEBUG
6dd652fa	142	printf ("writing erase cmd to addr 0x%08lx\n", (unsigned long)addr);
affae2bf	143	#endif
6dd652fa WD	144	*addr = BANK_CMD_ERASE1;
6dd652fa WD	145	*addr = BANK_CMD_ERASE2;
affae2bf WD	146
	147	/* re-enable interrupts if necessary */
	148	if (flag)
6dd652fa	149	enable_interrupts ();
affae2bf WD	150	}
	151
	152	static int
6dd652fa	153	bank_erase_poll (flash_info_t *info, int sect)
affae2bf	154	{
592c5cab	155	volatile bank_addr_t addr = (bank_addr_t)info->start[sect];
6dd652fa	156	bank_word_t stat = *addr;
affae2bf WD	157
affae2bf WD	158	#ifdef FLASH_DEBUG
6dd652fa WD	159	printf ("checking status at addr 0x%08lx [0x%08lx]\n",
6dd652fa WD	160	(unsigned long)addr, (unsigned long)stat);
affae2bf	161	#endif
6dd652fa WD	162
	163	if ((stat & BANK_STAT_RDY) == BANK_STAT_RDY) {
	164	if ((stat & BANK_STAT_ERR) != 0) {
	165	printf ("failed on sector %d [0x%08lx] at "
	166	"address 0x%08lx\n", sect,
	167	(unsigned long)stat, (unsigned long)addr);
	168	*addr = BANK_CMD_CLR_STAT;
	169	return (-1);
affae2bf	170	}
6dd652fa WD	171	else
6dd652fa WD	172	return (1);
affae2bf	173	}
affae2bf	174	else
6dd652fa	175	return (0);
affae2bf WD	176	}
	177
	178	static int
592c5cab	179	bank_write_word (volatile bank_addr_t addr, bank_word_t value)
affae2bf WD	180	{
	181	bank_word_t stat;
	182	ulong start;
	183	int flag, retval;
	184
	185	/* Disable interrupts which might cause a timeout here */
6dd652fa	186	flag = disable_interrupts ();
affae2bf WD	187
	188	*addr = BANK_CMD_PROG;
	189
	190	*addr = value;
	191
	192	/* re-enable interrupts if necessary */
	193	if (flag)
6dd652fa	194	enable_interrupts ();
affae2bf WD	195
	196	retval = 0;
	197
	198	/* data polling for D7 */
	199	start = get_timer (0);
	200	do {
6d0f6bcf	201	if (get_timer (start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
affae2bf WD	202	retval = 1;
	203	goto done;
	204	}
	205	stat = *addr;
	206	} while ((stat & BANK_STAT_RDY) != BANK_STAT_RDY);
	207
	208	if ((stat & BANK_STAT_ERR) != 0) {
6dd652fa WD	209	printf ("flash program failed [0x%08lx] at address 0x%08lx\n",
6dd652fa WD	210	(unsigned long)stat, (unsigned long)addr);
affae2bf WD	211	*addr = BANK_CMD_CLR_STAT;
	212	retval = 3;
	213	}
	214
	215	done:
	216	/* reset to read mode */
	217	*addr = BANK_CMD_RST;
	218
	219	return (retval);
	220	}
	221
	222	/*-----------------------------------------------------------------------
	223	*/
	224
	225	unsigned long
6dd652fa	226	flash_init (void)
affae2bf WD	227	{
	228	int i;
	229
	230	/* Init: no FLASHes known */
6d0f6bcf	231	for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
affae2bf WD	232	flash_info[i].flash_id = FLASH_UNKNOWN;
	233	}
	234
6d0f6bcf	235	bank_probe (&flash_info[0], (bank_addr_t)CONFIG_SYS_FLASH_BASE);
affae2bf WD	236
	237	/*
	238	* protect monitor and environment sectors
	239	*/
	240
6d0f6bcf	241	#if CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
6dd652fa	242	(void)flash_protect (FLAG_PROTECT_SET,
6d0f6bcf JCPV	243	CONFIG_SYS_MONITOR_BASE,
6d0f6bcf JCPV	244	CONFIG_SYS_MONITOR_BASE+monitor_flash_len-1,
affae2bf WD	245	&flash_info[0]);
	246	#endif
	247
6d0f6bcf	248	#if defined(CONFIG_SYS_FLASH_ENV_ADDR)
6dd652fa	249	(void)flash_protect (FLAG_PROTECT_SET,
6d0f6bcf JCPV	250	CONFIG_SYS_FLASH_ENV_ADDR,
	251	#if defined(CONFIG_SYS_FLASH_ENV_BUF)
	252	CONFIG_SYS_FLASH_ENV_ADDR + CONFIG_SYS_FLASH_ENV_BUF - 1,
affae2bf	253	#else
6d0f6bcf	254	CONFIG_SYS_FLASH_ENV_ADDR + CONFIG_SYS_FLASH_ENV_SIZE - 1,
affae2bf WD	255	#endif
	256	&flash_info[0]);
	257	#endif
	258
	259	return flash_info[0].size;
	260	}
	261
affae2bf WD	262	/*-----------------------------------------------------------------------
	263	*/
	264	void
6dd652fa	265	flash_print_info (flash_info_t *info)
affae2bf WD	266	{
	267	int i;
	268
	269	if (info->flash_id == FLASH_UNKNOWN) {
	270	printf ("missing or unknown FLASH type\n");
	271	return;
	272	}
	273
	274	switch (info->flash_id & FLASH_VENDMASK) {
	275	case FLASH_MAN_INTEL: printf ("INTEL "); break;
	276	default: printf ("Unknown Vendor "); break;
	277	}
	278
	279	switch (info->flash_id & FLASH_TYPEMASK) {
	280	case FLASH_28F320J5: printf ("28F320J5 (32 Mbit, 2 x 16bit)\n");
	281	break;
6dd652fa WD	282	case FLASH_28F640J5: printf ("28F640J5 (64 Mbit, 2 x 16bit)\n");
	283	break;
	284	case FLASH_28F320J3A: printf ("28F320J3A (32 Mbit, 2 x 16bit)\n");
	285	break;
	286	case FLASH_28F640J3A: printf ("28F640J3A (64 Mbit, 2 x 16bit)\n");
	287	break;
	288	case FLASH_28F128J3A: printf ("28F320J3A (128 Mbit, 2 x 16bit)\n");
	289	break;
affae2bf WD	290	default: printf ("Unknown Chip Type\n");
	291	break;
	292	}
	293
	294	printf (" Size: %ld MB in %d Sectors\n",
	295	info->size >> 20, info->sector_count);
	296
	297	printf (" Sector Start Addresses:");
	298	for (i=0; i<info->sector_count; ++i) {
	299	if ((i % 5) == 0)
	300	printf ("\n ");
	301	printf (" %08lX%s",
	302	info->start[i],
	303	info->protect[i] ? " (RO)" : " "
	304	);
	305	}
	306	printf ("\n");
	307	return;
	308	}
	309
affae2bf WD	310	/*
	311	* The following code cannot be run from FLASH!
	312	*/
affae2bf WD	313
	314	/*-----------------------------------------------------------------------
	315	*/
	316
	317	int
6dd652fa	318	flash_erase (flash_info_t *info, int s_first, int s_last)
affae2bf WD	319	{
	320	int prot, sect, haderr;
	321	ulong start, now, last;
	322	int rcode = 0;
	323
	324	#ifdef FLASH_DEBUG
6dd652fa	325	printf ("\nflash_erase: erase %d sectors (%d to %d incl.) from\n"
affae2bf WD	326	" Bank # %d: ", s_last - s_first + 1, s_first, s_last,
affae2bf WD	327	(info - flash_info) + 1);
6dd652fa	328	flash_print_info (info);
affae2bf WD	329	#endif
	330
	331	if ((s_first < 0) \|\| (s_first > s_last)) {
	332	if (info->flash_id == FLASH_UNKNOWN) {
	333	printf ("- missing\n");
	334	} else {
	335	printf ("- no sectors to erase\n");
	336	}
	337	return 1;
	338	}
	339
	340	prot = 0;
6dd652fa	341	for (sect = s_first; sect <= s_last; ++sect) {
affae2bf WD	342	if (info->protect[sect]) {
	343	prot++;
	344	}
	345	}
	346
	347	if (prot) {
6dd652fa	348	printf ("- Warning: %d protected sector%s will not be erased\n",
affae2bf WD	349	prot, (prot > 1 ? "s" : ""));
	350	}
	351
	352	start = get_timer (0);
	353	last = 0;
	354	haderr = 0;
	355
	356	for (sect = s_first; sect <= s_last; sect++) {
	357	if (info->protect[sect] == 0) { /* not protected */
	358	ulong estart;
	359	int sectdone;
	360
6dd652fa	361	bank_erase_init (info, sect);
affae2bf WD	362
	363	/* wait at least 80us - let's wait 1 ms */
	364	udelay (1000);
	365
6dd652fa	366	estart = get_timer (start);
affae2bf WD	367
affae2bf WD	368	do {
6dd652fa	369	now = get_timer (start);
affae2bf	370
6d0f6bcf	371	if (now - estart > CONFIG_SYS_FLASH_ERASE_TOUT) {
affae2bf WD	372	printf ("Timeout (sect %d)\n", sect);
	373	haderr = 1;
	374	rcode = 1;
	375	break;
	376	}
	377
	378	#ifndef FLASH_DEBUG
	379	/* show that we're waiting */
	380	if ((now - last) > 1000) { /* every second */
	381	putc ('.');
	382	last = now;
	383	}
	384	#endif
	385
6dd652fa	386	sectdone = bank_erase_poll (info, sect);
affae2bf WD	387
	388	if (sectdone < 0) {
	389	haderr = 1;
	390	rcode = 1;
	391	break;
	392	}
	393
	394	} while (!sectdone);
	395
	396	if (haderr)
	397	break;
	398	}
	399	}
	400
	401	if (haderr > 0)
	402	printf (" failed\n");
	403	else
	404	printf (" done\n");
	405
	406	/* reset to read mode */
	407	for (sect = s_first; sect <= s_last; sect++) {
	408	if (info->protect[sect] == 0) { /* not protected */
6dd652fa	409	bank_reset (info, sect);
affae2bf WD	410	}
	411	}
	412	return rcode;
	413	}
	414
6dd652fa WD	415	/*-----------------------------------------------------------------------
	416	* Write a word to Flash, returns:
	417	* 0 - OK
	418	* 1 - write timeout
	419	* 2 - Flash not erased
	420	* 3 - Program failed
	421	*/
	422	static int
	423	write_word (flash_info_t *info, ulong dest, ulong data)
	424	{
	425	/* Check if Flash is (sufficiently) erased */
	426	if (((ulong )dest & data) != data)
	427	return (2);
	428
	429	return (bank_write_word ((bank_addr_t)dest, (bank_word_t)data));
	430	}
	431
affae2bf WD	432	/*-----------------------------------------------------------------------
	433	* Copy memory to flash, returns:
	434	* 0 - OK
	435	* 1 - write timeout
	436	* 2 - Flash not erased
6dd652fa	437	* 3 - Program failed
affae2bf WD	438	*/
	439
	440	int
6dd652fa	441	write_buff (flash_info_t info, uchar src, ulong addr, ulong cnt)
affae2bf WD	442	{
	443	ulong cp, wp, data;
	444	int i, l, rc;
	445
	446	wp = (addr & ~3); /* get lower word aligned address */
	447
	448	/*
	449	* handle unaligned start bytes
	450	*/
	451	if ((l = addr - wp) != 0) {
	452	data = 0;
	453	for (i=0, cp=wp; i<l; ++i, ++cp) {
	454	data = (data << 8) \| ((uchar )cp);
	455	}
	456	for (; i<4 && cnt>0; ++i) {
	457	data = (data << 8) \| *src++;
	458	--cnt;
	459	++cp;
	460	}
	461	for (; cnt==0 && i<4; ++i, ++cp) {
	462	data = (data << 8) \| ((uchar )cp);
	463	}
	464
6dd652fa	465	if ((rc = write_word (info, wp, data)) != 0) {
affae2bf WD	466	return (rc);
	467	}
	468	wp += 4;
	469	}
	470
	471	/*
	472	* handle word aligned part
	473	*/
	474	while (cnt >= 4) {
	475	data = 0;
	476	for (i=0; i<4; ++i) {
	477	data = (data << 8) \| *src++;
	478	}
6dd652fa	479	if ((rc = write_word (info, wp, data)) != 0) {
affae2bf WD	480	return (rc);
	481	}
	482	wp += 4;
	483	cnt -= 4;
	484	}
	485
	486	if (cnt == 0) {
	487	return (0);
	488	}
	489
	490	/*
	491	* handle unaligned tail bytes
	492	*/
	493	data = 0;
	494	for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) {
	495	data = (data << 8) \| *src++;
	496	--cnt;
	497	}
	498	for (; i<4; ++i, ++cp) {
	499	data = (data << 8) \| ((uchar )cp);
	500	}
	501
6dd652fa	502	return (write_word (info, wp, data));
affae2bf WD	503	}
	504
	505	/*-----------------------------------------------------------------------
	506	*/