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

/*
 * (C) Copyright 2000
 * Wolfgang Denk, DENX Software Engineering, [email protected].
 *
 * SPDX-License-Identifier:	GPL-2.0+
 *
 * Hacked for the Hymod board by [email protected], 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, [email protected].
	4	*
1a459660	5	* SPDX-License-Identifier: GPL-2.0+
affae2bf	6	*
6dd652fa	7	* Hacked for the Hymod board by [email protected], 20-Oct-00
affae2bf WD	8	*/
	9
	10	#include <common.h>
	11	#include <mpc8260.h>
	12	#include <board/hymod/flash.h>
	13
6d0f6bcf	14	flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
affae2bf WD	15
	16	/*-----------------------------------------------------------------------
	17	* Protection Flags:
	18	*/
	19	#define FLAG_PROTECT_SET 0x01
	20	#define FLAG_PROTECT_CLEAR 0x02
	21
affae2bf WD	22	/*-----------------------------------------------------------------------
	23	*/
	24
	25	/*
6dd652fa WD	26	* probe for flash bank at address "base" and store info about it
6dd652fa WD	27	* in the flash_info entry "fip". Fatal error if nothing there.
affae2bf	28	*/
6dd652fa	29	static void
592c5cab	30	bank_probe (flash_info_t *fip, volatile bank_addr_t base)
affae2bf	31	{
592c5cab	32	volatile bank_addr_t addr;
6dd652fa WD	33	bank_word_t word;
6dd652fa WD	34	int i;
affae2bf WD	35
affae2bf WD	36	/* reset the flash */
6dd652fa	37	*base = BANK_CMD_RST;
affae2bf	38
592c5cab	39	/* put flash into read id mode */
6dd652fa	40	*base = BANK_CMD_RD_ID;
affae2bf	41
592c5cab WD	42	/* check the manufacturer id - must be intel */
592c5cab WD	43	word = *BANK_REG_MAN_CODE (base);
6dd652fa WD	44	if (word != BANK_FILL_WORD (INTEL_MANUFACT&0xff))
	45	panic ("\nbad manufacturer's code (0x%08lx) at addr 0x%08lx",
	46	(unsigned long)word, (unsigned long)base);
affae2bf	47
6dd652fa	48	/* check the device id */
6dd652fa	49	word = *BANK_REG_DEV_CODE (base);
6dd652fa	50	switch (word) {
affae2bf	51
6dd652fa WD	52	case BANK_FILL_WORD (INTEL_ID_28F320J5&0xff):
	53	fip->flash_id = FLASH_MAN_INTEL \| FLASH_28F320J5;
	54	fip->sector_count = 32;
	55	break;
affae2bf	56
6dd652fa WD	57	case BANK_FILL_WORD (INTEL_ID_28F640J5&0xff):
	58	fip->flash_id = FLASH_MAN_INTEL \| FLASH_28F640J5;
	59	fip->sector_count = 64;
	60	break;
affae2bf	61
6dd652fa WD	62	case BANK_FILL_WORD (INTEL_ID_28F320J3A&0xff):
	63	fip->flash_id = FLASH_MAN_INTEL \| FLASH_28F320J3A;
	64	fip->sector_count = 32;
	65	break;
affae2bf	66
6dd652fa WD	67	case BANK_FILL_WORD (INTEL_ID_28F640J3A&0xff):
	68	fip->flash_id = FLASH_MAN_INTEL \| FLASH_28F640J3A;
	69	fip->sector_count = 64;
	70	break;
affae2bf	71
6dd652fa WD	72	case BANK_FILL_WORD (INTEL_ID_28F128J3A&0xff):
	73	fip->flash_id = FLASH_MAN_INTEL \| FLASH_28F128J3A;
	74	fip->sector_count = 128;
	75	break;
affae2bf	76
6dd652fa WD	77	default:
	78	panic ("\nbad device code (0x%08lx) at addr 0x%08lx",
	79	(unsigned long)word, (unsigned long)base);
	80	}
affae2bf	81
6d0f6bcf	82	if (fip->sector_count >= CONFIG_SYS_MAX_FLASH_SECT)
6dd652fa WD	83	panic ("\ntoo many sectors (%d) in flash at address 0x%08lx",
6dd652fa WD	84	fip->sector_count, (unsigned long)base);
affae2bf	85
6dd652fa WD	86	addr = base;
	87	for (i = 0; i < fip->sector_count; i++) {
	88	fip->start[i] = (unsigned long)addr;
	89	fip->protect[i] = 0;
	90	addr = BANK_ADDR_NEXT_BLK (addr);
affae2bf WD	91	}
affae2bf WD	92
6dd652fa	93	fip->size = (bank_size_t)addr - (bank_size_t)base;
592c5cab WD	94
	95	/* reset the flash */
	96	*base = BANK_CMD_RST;
affae2bf WD	97	}
	98
	99	static void
6dd652fa	100	bank_reset (flash_info_t *info, int sect)
affae2bf	101	{
592c5cab	102	volatile bank_addr_t addr = (bank_addr_t)info->start[sect];
affae2bf	103
affae2bf	104	#ifdef FLASH_DEBUG
6dd652fa	105	printf ("writing reset cmd to addr 0x%08lx\n", (unsigned long)addr);
affae2bf	106	#endif
6dd652fa WD	107
6dd652fa WD	108	*addr = BANK_CMD_RST;
affae2bf WD	109	}
	110
	111	static void
6dd652fa	112	bank_erase_init (flash_info_t *info, int sect)
affae2bf	113	{
592c5cab	114	volatile bank_addr_t addr = (bank_addr_t)info->start[sect];
affae2bf WD	115	int flag;
	116
	117	#ifdef FLASH_DEBUG
6dd652fa WD	118	printf ("erasing sector %d, addr = 0x%08lx\n",
6dd652fa WD	119	sect, (unsigned long)addr);
affae2bf WD	120	#endif
	121
	122	/* Disable intrs which might cause a timeout here */
6dd652fa	123	flag = disable_interrupts ();
affae2bf	124
affae2bf	125	#ifdef FLASH_DEBUG
6dd652fa	126	printf ("writing erase cmd to addr 0x%08lx\n", (unsigned long)addr);
affae2bf	127	#endif
6dd652fa WD	128	*addr = BANK_CMD_ERASE1;
6dd652fa WD	129	*addr = BANK_CMD_ERASE2;
affae2bf WD	130
	131	/* re-enable interrupts if necessary */
	132	if (flag)
6dd652fa	133	enable_interrupts ();
affae2bf WD	134	}
	135
	136	static int
6dd652fa	137	bank_erase_poll (flash_info_t *info, int sect)
affae2bf	138	{
592c5cab	139	volatile bank_addr_t addr = (bank_addr_t)info->start[sect];
6dd652fa	140	bank_word_t stat = *addr;
affae2bf WD	141
affae2bf WD	142	#ifdef FLASH_DEBUG
6dd652fa WD	143	printf ("checking status at addr 0x%08lx [0x%08lx]\n",
6dd652fa WD	144	(unsigned long)addr, (unsigned long)stat);
affae2bf	145	#endif
6dd652fa WD	146
	147	if ((stat & BANK_STAT_RDY) == BANK_STAT_RDY) {
	148	if ((stat & BANK_STAT_ERR) != 0) {
	149	printf ("failed on sector %d [0x%08lx] at "
	150	"address 0x%08lx\n", sect,
	151	(unsigned long)stat, (unsigned long)addr);
	152	*addr = BANK_CMD_CLR_STAT;
	153	return (-1);
affae2bf	154	}
6dd652fa WD	155	else
6dd652fa WD	156	return (1);
affae2bf	157	}
affae2bf	158	else
6dd652fa	159	return (0);
affae2bf WD	160	}
	161
	162	static int
592c5cab	163	bank_write_word (volatile bank_addr_t addr, bank_word_t value)
affae2bf WD	164	{
	165	bank_word_t stat;
	166	ulong start;
	167	int flag, retval;
	168
	169	/* Disable interrupts which might cause a timeout here */
6dd652fa	170	flag = disable_interrupts ();
affae2bf WD	171
	172	*addr = BANK_CMD_PROG;
	173
	174	*addr = value;
	175
	176	/* re-enable interrupts if necessary */
	177	if (flag)
6dd652fa	178	enable_interrupts ();
affae2bf WD	179
	180	retval = 0;
	181
	182	/* data polling for D7 */
	183	start = get_timer (0);
	184	do {
6d0f6bcf	185	if (get_timer (start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
affae2bf WD	186	retval = 1;
	187	goto done;
	188	}
	189	stat = *addr;
	190	} while ((stat & BANK_STAT_RDY) != BANK_STAT_RDY);
	191
	192	if ((stat & BANK_STAT_ERR) != 0) {
6dd652fa WD	193	printf ("flash program failed [0x%08lx] at address 0x%08lx\n",
6dd652fa WD	194	(unsigned long)stat, (unsigned long)addr);
affae2bf WD	195	*addr = BANK_CMD_CLR_STAT;
	196	retval = 3;
	197	}
	198
	199	done:
	200	/* reset to read mode */
	201	*addr = BANK_CMD_RST;
	202
	203	return (retval);
	204	}
	205
	206	/*-----------------------------------------------------------------------
	207	*/
	208
	209	unsigned long
6dd652fa	210	flash_init (void)
affae2bf WD	211	{
	212	int i;
	213
	214	/* Init: no FLASHes known */
6d0f6bcf	215	for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
affae2bf WD	216	flash_info[i].flash_id = FLASH_UNKNOWN;
	217	}
	218
6d0f6bcf	219	bank_probe (&flash_info[0], (bank_addr_t)CONFIG_SYS_FLASH_BASE);
affae2bf WD	220
	221	/*
	222	* protect monitor and environment sectors
	223	*/
	224
6d0f6bcf	225	#if CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
6dd652fa	226	(void)flash_protect (FLAG_PROTECT_SET,
6d0f6bcf JCPV	227	CONFIG_SYS_MONITOR_BASE,
6d0f6bcf JCPV	228	CONFIG_SYS_MONITOR_BASE+monitor_flash_len-1,
affae2bf WD	229	&flash_info[0]);
	230	#endif
	231
6d0f6bcf	232	#if defined(CONFIG_SYS_FLASH_ENV_ADDR)
6dd652fa	233	(void)flash_protect (FLAG_PROTECT_SET,
6d0f6bcf JCPV	234	CONFIG_SYS_FLASH_ENV_ADDR,
	235	#if defined(CONFIG_SYS_FLASH_ENV_BUF)
	236	CONFIG_SYS_FLASH_ENV_ADDR + CONFIG_SYS_FLASH_ENV_BUF - 1,
affae2bf	237	#else
6d0f6bcf	238	CONFIG_SYS_FLASH_ENV_ADDR + CONFIG_SYS_FLASH_ENV_SIZE - 1,
affae2bf WD	239	#endif
	240	&flash_info[0]);
	241	#endif
	242
	243	return flash_info[0].size;
	244	}
	245
affae2bf WD	246	/*-----------------------------------------------------------------------
	247	*/
	248	void
6dd652fa	249	flash_print_info (flash_info_t *info)
affae2bf WD	250	{
	251	int i;
	252
	253	if (info->flash_id == FLASH_UNKNOWN) {
	254	printf ("missing or unknown FLASH type\n");
	255	return;
	256	}
	257
	258	switch (info->flash_id & FLASH_VENDMASK) {
	259	case FLASH_MAN_INTEL: printf ("INTEL "); break;
	260	default: printf ("Unknown Vendor "); break;
	261	}
	262
	263	switch (info->flash_id & FLASH_TYPEMASK) {
	264	case FLASH_28F320J5: printf ("28F320J5 (32 Mbit, 2 x 16bit)\n");
	265	break;
6dd652fa WD	266	case FLASH_28F640J5: printf ("28F640J5 (64 Mbit, 2 x 16bit)\n");
	267	break;
	268	case FLASH_28F320J3A: printf ("28F320J3A (32 Mbit, 2 x 16bit)\n");
	269	break;
	270	case FLASH_28F640J3A: printf ("28F640J3A (64 Mbit, 2 x 16bit)\n");
	271	break;
	272	case FLASH_28F128J3A: printf ("28F320J3A (128 Mbit, 2 x 16bit)\n");
	273	break;
affae2bf WD	274	default: printf ("Unknown Chip Type\n");
	275	break;
	276	}
	277
	278	printf (" Size: %ld MB in %d Sectors\n",
	279	info->size >> 20, info->sector_count);
	280
	281	printf (" Sector Start Addresses:");
	282	for (i=0; i<info->sector_count; ++i) {
	283	if ((i % 5) == 0)
	284	printf ("\n ");
	285	printf (" %08lX%s",
	286	info->start[i],
	287	info->protect[i] ? " (RO)" : " "
	288	);
	289	}
	290	printf ("\n");
	291	return;
	292	}
	293
affae2bf WD	294	/*
	295	* The following code cannot be run from FLASH!
	296	*/
affae2bf WD	297
	298	/*-----------------------------------------------------------------------
	299	*/
	300
	301	int
6dd652fa	302	flash_erase (flash_info_t *info, int s_first, int s_last)
affae2bf WD	303	{
	304	int prot, sect, haderr;
	305	ulong start, now, last;
	306	int rcode = 0;
	307
	308	#ifdef FLASH_DEBUG
6dd652fa	309	printf ("\nflash_erase: erase %d sectors (%d to %d incl.) from\n"
affae2bf WD	310	" Bank # %d: ", s_last - s_first + 1, s_first, s_last,
affae2bf WD	311	(info - flash_info) + 1);
6dd652fa	312	flash_print_info (info);
affae2bf WD	313	#endif
	314
	315	if ((s_first < 0) \|\| (s_first > s_last)) {
	316	if (info->flash_id == FLASH_UNKNOWN) {
	317	printf ("- missing\n");
	318	} else {
	319	printf ("- no sectors to erase\n");
	320	}
	321	return 1;
	322	}
	323
	324	prot = 0;
6dd652fa	325	for (sect = s_first; sect <= s_last; ++sect) {
affae2bf WD	326	if (info->protect[sect]) {
	327	prot++;
	328	}
	329	}
	330
	331	if (prot) {
6dd652fa	332	printf ("- Warning: %d protected sector%s will not be erased\n",
affae2bf WD	333	prot, (prot > 1 ? "s" : ""));
	334	}
	335
	336	start = get_timer (0);
	337	last = 0;
	338	haderr = 0;
	339
	340	for (sect = s_first; sect <= s_last; sect++) {
	341	if (info->protect[sect] == 0) { /* not protected */
	342	ulong estart;
	343	int sectdone;
	344
6dd652fa	345	bank_erase_init (info, sect);
affae2bf WD	346
	347	/* wait at least 80us - let's wait 1 ms */
	348	udelay (1000);
	349
6dd652fa	350	estart = get_timer (start);
affae2bf WD	351
affae2bf WD	352	do {
6dd652fa	353	now = get_timer (start);
affae2bf	354
6d0f6bcf	355	if (now - estart > CONFIG_SYS_FLASH_ERASE_TOUT) {
affae2bf WD	356	printf ("Timeout (sect %d)\n", sect);
	357	haderr = 1;
	358	rcode = 1;
	359	break;
	360	}
	361
	362	#ifndef FLASH_DEBUG
	363	/* show that we're waiting */
	364	if ((now - last) > 1000) { /* every second */
	365	putc ('.');
	366	last = now;
	367	}
	368	#endif
	369
6dd652fa	370	sectdone = bank_erase_poll (info, sect);
affae2bf WD	371
	372	if (sectdone < 0) {
	373	haderr = 1;
	374	rcode = 1;
	375	break;
	376	}
	377
	378	} while (!sectdone);
	379
	380	if (haderr)
	381	break;
	382	}
	383	}
	384
	385	if (haderr > 0)
	386	printf (" failed\n");
	387	else
	388	printf (" done\n");
	389
	390	/* reset to read mode */
	391	for (sect = s_first; sect <= s_last; sect++) {
	392	if (info->protect[sect] == 0) { /* not protected */
6dd652fa	393	bank_reset (info, sect);
affae2bf WD	394	}
	395	}
	396	return rcode;
	397	}
	398
6dd652fa WD	399	/*-----------------------------------------------------------------------
	400	* Write a word to Flash, returns:
	401	* 0 - OK
	402	* 1 - write timeout
	403	* 2 - Flash not erased
	404	* 3 - Program failed
	405	*/
	406	static int
	407	write_word (flash_info_t *info, ulong dest, ulong data)
	408	{
	409	/* Check if Flash is (sufficiently) erased */
	410	if (((ulong )dest & data) != data)
	411	return (2);
	412
	413	return (bank_write_word ((bank_addr_t)dest, (bank_word_t)data));
	414	}
	415
affae2bf WD	416	/*-----------------------------------------------------------------------
	417	* Copy memory to flash, returns:
	418	* 0 - OK
	419	* 1 - write timeout
	420	* 2 - Flash not erased
6dd652fa	421	* 3 - Program failed
affae2bf WD	422	*/
	423
	424	int
6dd652fa	425	write_buff (flash_info_t info, uchar src, ulong addr, ulong cnt)
affae2bf WD	426	{
	427	ulong cp, wp, data;
	428	int i, l, rc;
	429
	430	wp = (addr & ~3); /* get lower word aligned address */
	431
	432	/*
	433	* handle unaligned start bytes
	434	*/
	435	if ((l = addr - wp) != 0) {
	436	data = 0;
	437	for (i=0, cp=wp; i<l; ++i, ++cp) {
	438	data = (data << 8) \| ((uchar )cp);
	439	}
	440	for (; i<4 && cnt>0; ++i) {
	441	data = (data << 8) \| *src++;
	442	--cnt;
	443	++cp;
	444	}
	445	for (; cnt==0 && i<4; ++i, ++cp) {
	446	data = (data << 8) \| ((uchar )cp);
	447	}
	448
6dd652fa	449	if ((rc = write_word (info, wp, data)) != 0) {
affae2bf WD	450	return (rc);
	451	}
	452	wp += 4;
	453	}
	454
	455	/*
	456	* handle word aligned part
	457	*/
	458	while (cnt >= 4) {
	459	data = 0;
	460	for (i=0; i<4; ++i) {
	461	data = (data << 8) \| *src++;
	462	}
6dd652fa	463	if ((rc = write_word (info, wp, data)) != 0) {
affae2bf WD	464	return (rc);
	465	}
	466	wp += 4;
	467	cnt -= 4;
	468	}
	469
	470	if (cnt == 0) {
	471	return (0);
	472	}
	473
	474	/*
	475	* handle unaligned tail bytes
	476	*/
	477	data = 0;
	478	for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) {
	479	data = (data << 8) \| *src++;
	480	--cnt;
	481	}
	482	for (; i<4; ++i, ++cp) {
	483	data = (data << 8) \| ((uchar )cp);
	484	}
	485
6dd652fa	486	return (write_word (info, wp, data));
affae2bf WD	487	}
	488
	489	/*-----------------------------------------------------------------------
	490	*/