[people/ms/u-boot.git] / board / r360mpi / flash.c

/*
 * (C) Copyright 2001
 * Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net
 *
 * (C) Copyright 2001
 * 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
 */

/* #define DEBUG */

#include <common.h>
#include <mpc8xx.h>

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

#if defined(CFG_ENV_IS_IN_FLASH)
# ifndef  CFG_ENV_ADDR
#  define CFG_ENV_ADDR	(CFG_FLASH_BASE + CFG_ENV_OFFSET)
# endif
# ifndef  CFG_ENV_SIZE
#  define CFG_ENV_SIZE	CFG_ENV_SECT_SIZE
# endif
# ifndef  CFG_ENV_SECT_SIZE
#  define CFG_ENV_SECT_SIZE  CFG_ENV_SIZE
# endif
#endif

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

/* Board support for 1 or 2 flash devices */
#undef FLASH_PORT_WIDTH32
#define FLASH_PORT_WIDTH16

#ifdef FLASH_PORT_WIDTH16
#define FLASH_PORT_WIDTH	ushort
#define FLASH_PORT_WIDTHV	vu_short
#else
#define FLASH_PORT_WIDTH	ulong
#define FLASH_PORT_WIDTHV	vu_long
#endif

#define FPW			FLASH_PORT_WIDTH
#define FPWV			FLASH_PORT_WIDTHV

/*-----------------------------------------------------------------------
 * Functions
 */
static ulong flash_get_size (FPW * addr, flash_info_t * info);
static int write_data (flash_info_t * info, ulong dest, FPW data);
static void flash_get_offsets (ulong base, flash_info_t * info);

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

unsigned long flash_init (void)
{
	volatile immap_t *immap = (immap_t *) CFG_IMMR;
	volatile memctl8xx_t *memctl = &immap->im_memctl;
	unsigned long size_b0;
	int i;

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

	/* Static FLASH Bank configuration here - FIXME XXX */
	size_b0 = flash_get_size ((FPW *) FLASH_BASE0_PRELIM, &flash_info[0]);

	if (flash_info[0].flash_id == FLASH_UNKNOWN) {
		printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
			size_b0, size_b0 << 20);
	}

	/* Remap FLASH according to real size */
	memctl->memc_or0 = CFG_OR_TIMING_FLASH | (-size_b0 & 0xFFFF8000);
	memctl->memc_br0 = (CFG_FLASH_BASE & BR_BA_MSK) | BR_PS_16 | BR_MS_GPCM | BR_V;

	/* Re-do sizing to get full correct info */
	size_b0 = flash_get_size ((FPW *) CFG_FLASH_BASE, &flash_info[0]);

	flash_get_offsets (CFG_FLASH_BASE, &flash_info[0]);

#if CFG_MONITOR_BASE >= CFG_FLASH_BASE
	/* monitor protection ON by default */
	(void) flash_protect (FLAG_PROTECT_SET,
				CFG_FLASH_BASE,
				CFG_FLASH_BASE + CFG_MONITOR_LEN - 1,
				&flash_info[0]);
#endif

#ifdef	CFG_ENV_IS_IN_FLASH
	/* ENV protection ON by default */
	flash_protect (FLAG_PROTECT_SET,
			CFG_ENV_ADDR,
			CFG_ENV_ADDR + CFG_ENV_SIZE - 1,
			&flash_info[0]);
#endif

	flash_info[0].size = size_b0;

	return (size_b0);
}

/*-----------------------------------------------------------------------
 */
static void flash_get_offsets (ulong base, flash_info_t * info)
{
	int i;

	if (info->flash_id == FLASH_UNKNOWN) {
		return;
	}

	if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) {
		for (i = 0; i < info->sector_count; i++) {
			info->start[i] = base + (i * 0x00020000);
		}
	}
}

/*-----------------------------------------------------------------------
 */
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_28F320J3A:
		printf ("28F320J3A\n");
		break;
	case FLASH_28F640J3A:
		printf ("28F640J3A\n");
		break;
	case FLASH_28F128J3A:
		printf ("28F128J3A\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!
 */

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

	/* Write auto select command: read Manufacturer ID */
	addr[0x5555] = (FPW) 0x00AA00AA;
	addr[0x2AAA] = (FPW) 0x00550055;
	addr[0x5555] = (FPW) 0x00900090;

	value = addr[0];

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

	switch (value) {
	case (FPW) INTEL_MANUFACT:
		info->flash_id = FLASH_MAN_INTEL;
		break;
	default:
		info->flash_id = FLASH_UNKNOWN;
		info->sector_count = 0;
		info->size = 0;
		addr[0] = (FPW) 0x00FF00FF;	/* restore read mode */
		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 (FPW) INTEL_ID_28F320J3A:
		info->flash_id += FLASH_28F320J3A;
		info->sector_count = 32;
		info->size = 0x00400000;
		break;				/* => 4 MB     */

	case (FPW) INTEL_ID_28F640J3A:
		info->flash_id += FLASH_28F640J3A;
		info->sector_count = 64;
		info->size = 0x00800000;
		break;				/* => 8 MB     */

	case (FPW) INTEL_ID_28F128J3A:
		info->flash_id += FLASH_28F128J3A;
		info->sector_count = 128;
		info->size = 0x01000000;
		break;				/* => 16 MB     */

	default:
		info->flash_id = FLASH_UNKNOWN;
		break;
	}

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

	addr[0] = (FPW) 0x00FF00FF;	/* restore read mode */

	return (info->size);
}


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

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

	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;
	}

	type = (info->flash_id & FLASH_VENDMASK);
	if ((type != FLASH_MAN_INTEL)) {
		printf ("Can't erase unknown flash type %08lx - aborted\n",
			info->flash_id);
		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");
	}

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

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

			*addr = (FPW) 0x00500050;	/* clear status register */
			*addr = (FPW) 0x00200020;	/* erase setup */
			*addr = (FPW) 0x00D000D0;	/* erase confirm */

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

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

			while (((status = *addr) & (FPW) 0x00800080) != (FPW) 0x00800080) {
			    if ((now = get_timer (start)) > CFG_FLASH_ERASE_TOUT) {
				printf ("Timeout\n");
				*addr = (FPW) 0x00B000B0;	/* suspend erase     */
				*addr = (FPW) 0x00FF00FF;	/* reset to read mode */
				rcode = 1;
				break;
			    }

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

			*addr = (FPW) 0x00FF00FF;	/* reset to read mode */
		}
	}
	printf (" done\n");
	return rcode;
}

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

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

	int i, l, rc, port_width;

	if (info->flash_id == FLASH_UNKNOWN) {
		return 4;
	}
/* get lower word aligned address */
#ifdef FLASH_PORT_WIDTH16
	wp = (addr & ~1);
	port_width = 2;
#else
	wp = (addr & ~3);
	port_width = 4;
#endif

	/*
	 * 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 < port_width && cnt > 0; ++i) {
			data = (data << 8) | *src++;
			--cnt;
			++cp;
		}
		for (; cnt == 0 && i < port_width; ++i, ++cp) {
			data = (data << 8) | (*(uchar *) cp);
		}

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

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

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

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

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

/*-----------------------------------------------------------------------
 * Write a word or halfword to Flash, returns:
 * 0 - OK
 * 1 - write timeout
 * 2 - Flash not erased
 */
static int write_data (flash_info_t * info, ulong dest, FPW data)
{
	FPWV *addr = (FPWV *) dest;
	ulong status;
	ulong start;
	int flag;

	/* Check if Flash is (sufficiently) erased */
	if ((*addr & data) != data) {
		printf ("not erased at %08lx (%x)\n", (ulong) addr, *addr);
		return (2);
	}
	/* Disable interrupts which might cause a timeout here */
	flag = disable_interrupts ();

	*addr = (FPW) 0x00400040;	/* write setup */
	*addr = data;

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

	start = get_timer (0);

	while (((status = *addr) & (FPW) 0x00800080) != (FPW) 0x00800080) {
		if (get_timer (start) > CFG_FLASH_WRITE_TOUT) {
			*addr = (FPW) 0x00FF00FF;	/* restore read mode */
			return (1);
		}
	}

	*addr = (FPW) 0x00FF00FF;	/* restore read mode */

	return (0);
}
Commit	Line	Data
89930721 WD	1	/*
	2	* (C) Copyright 2001
	3	* Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net
	4	*
	5	* (C) Copyright 2001
	6	* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
	7	*
	8	* See file CREDITS for list of people who contributed to this
	9	* project.
	10	*
	11	* This program is free software; you can redistribute it and/or
	12	* modify it under the terms of the GNU General Public License as
	13	* published by the Free Software Foundation; either version 2 of
	14	* the License, or (at your option) any later version.
	15	*
	16	* This program is distributed in the hope that it will be useful,
	17	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	18	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	19	* GNU General Public License for more details.
	20	*
	21	* You should have received a copy of the GNU General Public License
	22	* along with this program; if not, write to the Free Software
	23	* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	24	* MA 02111-1307 USA
	25	*/
	26
43d9616c WD	27	/* #define DEBUG */
43d9616c WD	28
89930721 WD	29	#include <common.h>
	30	#include <mpc8xx.h>
	31
43d9616c	32	flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
89930721 WD	33
	34	#if defined(CFG_ENV_IS_IN_FLASH)
	35	# ifndef CFG_ENV_ADDR
	36	# define CFG_ENV_ADDR (CFG_FLASH_BASE + CFG_ENV_OFFSET)
	37	# endif
	38	# ifndef CFG_ENV_SIZE
	39	# define CFG_ENV_SIZE CFG_ENV_SECT_SIZE
	40	# endif
	41	# ifndef CFG_ENV_SECT_SIZE
	42	# define CFG_ENV_SECT_SIZE CFG_ENV_SIZE
	43	# endif
	44	#endif
	45
	46	/*-----------------------------------------------------------------------
	47	* Protection Flags:
	48	*/
	49	#define FLAG_PROTECT_SET 0x01
	50	#define FLAG_PROTECT_CLEAR 0x02
	51
	52	/* Board support for 1 or 2 flash devices */
	53	#undef FLASH_PORT_WIDTH32
	54	#define FLASH_PORT_WIDTH16
	55
	56	#ifdef FLASH_PORT_WIDTH16
43d9616c WD	57	#define FLASH_PORT_WIDTH ushort
43d9616c WD	58	#define FLASH_PORT_WIDTHV vu_short
89930721	59	#else
43d9616c WD	60	#define FLASH_PORT_WIDTH ulong
43d9616c WD	61	#define FLASH_PORT_WIDTHV vu_long
89930721 WD	62	#endif
89930721 WD	63
43d9616c WD	64	#define FPW FLASH_PORT_WIDTH
43d9616c WD	65	#define FPWV FLASH_PORT_WIDTHV
89930721 WD	66
	67	/*-----------------------------------------------------------------------
	68	* Functions
	69	*/
43d9616c WD	70	static ulong flash_get_size (FPW * addr, flash_info_t * info);
	71	static int write_data (flash_info_t * info, ulong dest, FPW data);
	72	static void flash_get_offsets (ulong base, flash_info_t * info);
89930721 WD	73
	74	/*-----------------------------------------------------------------------
	75	*/
	76
	77	unsigned long flash_init (void)
	78	{
43d9616c	79	volatile immap_t immap = (immap_t ) CFG_IMMR;
89930721 WD	80	volatile memctl8xx_t *memctl = &immap->im_memctl;
	81	unsigned long size_b0;
	82	int i;
	83
	84	/* Init: no FLASHes known */
43d9616c	85	for (i = 0; i < CFG_MAX_FLASH_BANKS; ++i) {
89930721 WD	86	flash_info[i].flash_id = FLASH_UNKNOWN;
	87	}
	88
	89	/* Static FLASH Bank configuration here - FIXME XXX */
43d9616c	90	size_b0 = flash_get_size ((FPW *) FLASH_BASE0_PRELIM, &flash_info[0]);
89930721 WD	91
	92	if (flash_info[0].flash_id == FLASH_UNKNOWN) {
	93	printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
43d9616c	94	size_b0, size_b0 << 20);
89930721 WD	95	}
	96
	97	/* Remap FLASH according to real size */
	98	memctl->memc_or0 = CFG_OR_TIMING_FLASH \| (-size_b0 & 0xFFFF8000);
	99	memctl->memc_br0 = (CFG_FLASH_BASE & BR_BA_MSK) \| BR_PS_16 \| BR_MS_GPCM \| BR_V;
	100
	101	/* Re-do sizing to get full correct info */
43d9616c	102	size_b0 = flash_get_size ((FPW *) CFG_FLASH_BASE, &flash_info[0]);
89930721 WD	103
	104	flash_get_offsets (CFG_FLASH_BASE, &flash_info[0]);
	105
	106	#if CFG_MONITOR_BASE >= CFG_FLASH_BASE
	107	/* monitor protection ON by default */
43d9616c WD	108	(void) flash_protect (FLAG_PROTECT_SET,
	109	CFG_FLASH_BASE,
	110	CFG_FLASH_BASE + CFG_MONITOR_LEN - 1,
	111	&flash_info[0]);
89930721 WD	112	#endif
	113
	114	#ifdef CFG_ENV_IS_IN_FLASH
	115	/* ENV protection ON by default */
43d9616c WD	116	flash_protect (FLAG_PROTECT_SET,
	117	CFG_ENV_ADDR,
	118	CFG_ENV_ADDR + CFG_ENV_SIZE - 1,
	119	&flash_info[0]);
89930721 WD	120	#endif
	121
	122	flash_info[0].size = size_b0;
	123
	124	return (size_b0);
	125	}
	126
	127	/*-----------------------------------------------------------------------
	128	*/
43d9616c	129	static void flash_get_offsets (ulong base, flash_info_t * info)
89930721 WD	130	{
	131	int i;
	132
	133	if (info->flash_id == FLASH_UNKNOWN) {
	134	return;
	135	}
	136
	137	if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) {
	138	for (i = 0; i < info->sector_count; i++) {
	139	info->start[i] = base + (i * 0x00020000);
	140	}
	141	}
	142	}
	143
	144	/*-----------------------------------------------------------------------
	145	*/
43d9616c	146	void flash_print_info (flash_info_t * info)
89930721 WD	147	{
	148	int i;
	149
	150	if (info->flash_id == FLASH_UNKNOWN) {
	151	printf ("missing or unknown FLASH type\n");
	152	return;
	153	}
	154
	155	switch (info->flash_id & FLASH_VENDMASK) {
43d9616c WD	156	case FLASH_MAN_INTEL:
	157	printf ("INTEL ");
	158	break;
	159	default:
	160	printf ("Unknown Vendor ");
	161	break;
89930721 WD	162	}
	163
	164	switch (info->flash_id & FLASH_TYPEMASK) {
43d9616c WD	165	case FLASH_28F320J3A:
	166	printf ("28F320J3A\n");
	167	break;
	168	case FLASH_28F640J3A:
	169	printf ("28F640J3A\n");
	170	break;
	171	case FLASH_28F128J3A:
	172	printf ("28F128J3A\n");
	173	break;
	174	default:
	175	printf ("Unknown Chip Type\n");
	176	break;
89930721 WD	177	}
	178
	179	printf (" Size: %ld MB in %d Sectors\n",
43d9616c	180	info->size >> 20, info->sector_count);
89930721 WD	181
89930721 WD	182	printf (" Sector Start Addresses:");
43d9616c	183	for (i = 0; i < info->sector_count; ++i) {
89930721 WD	184	if ((i % 5) == 0)
	185	printf ("\n ");
	186	printf (" %08lX%s",
	187	info->start[i],
43d9616c	188	info->protect[i] ? " (RO)" : " ");
89930721 WD	189	}
	190	printf ("\n");
	191	return;
	192	}
	193
	194	/*-----------------------------------------------------------------------
	195	*/
	196
	197
	198	/*-----------------------------------------------------------------------
	199	*/
	200
	201	/*
	202	* The following code cannot be run from FLASH!
	203	*/
	204
43d9616c	205	static ulong flash_get_size (FPW * addr, flash_info_t * info)
89930721 WD	206	{
	207	FPW value;
	208
	209	/* Write auto select command: read Manufacturer ID */
43d9616c WD	210	addr[0x5555] = (FPW) 0x00AA00AA;
	211	addr[0x2AAA] = (FPW) 0x00550055;
	212	addr[0x5555] = (FPW) 0x00900090;
89930721 WD	213
	214	value = addr[0];
	215
43d9616c WD	216	debug ("Manuf. ID @ 0x%08lx: 0x%08lx\n", (ulong)addr, value);
	217
	218	switch (value) {
	219	case (FPW) INTEL_MANUFACT:
	220	info->flash_id = FLASH_MAN_INTEL;
	221	break;
89930721 WD	222	default:
	223	info->flash_id = FLASH_UNKNOWN;
	224	info->sector_count = 0;
	225	info->size = 0;
43d9616c WD	226	addr[0] = (FPW) 0x00FF00FF; /* restore read mode */
43d9616c WD	227	return (0); /* no or unknown flash */
89930721 WD	228	}
89930721 WD	229
43d9616c WD	230	value = addr[1]; /* device ID */
	231
	232	debug ("Device ID @ 0x%08lx: 0x%08lx\n", (ulong)(&addr[1]), value);
89930721	233
43d9616c WD	234	switch (value) {
	235	case (FPW) INTEL_ID_28F320J3A:
	236	info->flash_id += FLASH_28F320J3A;
	237	info->sector_count = 32;
	238	info->size = 0x00400000;
	239	break; /* => 4 MB */
89930721	240
43d9616c WD	241	case (FPW) INTEL_ID_28F640J3A:
	242	info->flash_id += FLASH_28F640J3A;
	243	info->sector_count = 64;
	244	info->size = 0x00800000;
	245	break; /* => 8 MB */
89930721	246
43d9616c WD	247	case (FPW) INTEL_ID_28F128J3A:
	248	info->flash_id += FLASH_28F128J3A;
	249	info->sector_count = 128;
	250	info->size = 0x01000000;
	251	break; /* => 16 MB */
89930721 WD	252
	253	default:
	254	info->flash_id = FLASH_UNKNOWN;
	255	break;
	256	}
	257
	258	if (info->sector_count > CFG_MAX_FLASH_SECT) {
	259	printf (" ERROR: sector count %d > max (%d) \n",
43d9616c	260	info->sector_count, CFG_MAX_FLASH_SECT);
89930721 WD	261	info->sector_count = CFG_MAX_FLASH_SECT;
	262	}
	263
43d9616c	264	addr[0] = (FPW) 0x00FF00FF; /* restore read mode */
89930721 WD	265
	266	return (info->size);
	267	}
	268
	269
	270	/*-----------------------------------------------------------------------
	271	*/
	272
43d9616c	273	int flash_erase (flash_info_t * info, int s_first, int s_last)
89930721 WD	274	{
	275	int flag, prot, sect;
	276	ulong type, start, now, last;
	277	int rcode = 0;
	278
	279	if ((s_first < 0) \|\| (s_first > s_last)) {
	280	if (info->flash_id == FLASH_UNKNOWN) {
	281	printf ("- missing\n");
	282	} else {
	283	printf ("- no sectors to erase\n");
	284	}
	285	return 1;
	286	}
	287
	288	type = (info->flash_id & FLASH_VENDMASK);
	289	if ((type != FLASH_MAN_INTEL)) {
	290	printf ("Can't erase unknown flash type %08lx - aborted\n",
	291	info->flash_id);
	292	return 1;
	293	}
	294
	295	prot = 0;
43d9616c	296	for (sect = s_first; sect <= s_last; ++sect) {
89930721 WD	297	if (info->protect[sect]) {
	298	prot++;
	299	}
	300	}
	301
	302	if (prot) {
	303	printf ("- Warning: %d protected sectors will not be erased!\n",
	304	prot);
	305	} else {
	306	printf ("\n");
	307	}
	308
	309	start = get_timer (0);
43d9616c	310	last = start;
89930721	311	/* Start erase on unprotected sectors */
43d9616c	312	for (sect = s_first; sect <= s_last; sect++) {
89930721	313	if (info->protect[sect] == 0) { /* not protected */
43d9616c	314	FPWV addr = (FPWV ) (info->start[sect]);
89930721 WD	315	FPW status;
	316
	317	/* Disable interrupts which might cause a timeout here */
43d9616c	318	flag = disable_interrupts ();
89930721	319
43d9616c WD	320	addr = (FPW) 0x00500050; / clear status register */
	321	addr = (FPW) 0x00200020; / erase setup */
	322	addr = (FPW) 0x00D000D0; / erase confirm */
89930721 WD	323
	324	/* re-enable interrupts if necessary */
	325	if (flag)
43d9616c	326	enable_interrupts ();
89930721 WD	327
	328	/* wait at least 80us - let's wait 1 ms */
	329	udelay (1000);
	330
43d9616c WD	331	while (((status = *addr) & (FPW) 0x00800080) != (FPW) 0x00800080) {
	332	if ((now = get_timer (start)) > CFG_FLASH_ERASE_TOUT) {
	333	printf ("Timeout\n");
	334	addr = (FPW) 0x00B000B0; / suspend erase */
	335	addr = (FPW) 0x00FF00FF; / reset to read mode */
	336	rcode = 1;
	337	break;
	338	}
	339
	340	/* show that we're waiting */
	341	if ((now - last) > 1000) { /* every second */
	342	putc ('.');
	343	last = now;
	344	}
89930721 WD	345	}
89930721 WD	346
43d9616c	347	addr = (FPW) 0x00FF00FF; / reset to read mode */
89930721 WD	348	}
	349	}
	350	printf (" done\n");
	351	return rcode;
	352	}
	353
	354	/*-----------------------------------------------------------------------
	355	* Copy memory to flash, returns:
	356	* 0 - OK
	357	* 1 - write timeout
	358	* 2 - Flash not erased
	359	* 4 - Flash not identified
	360	*/
	361
43d9616c	362	int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
89930721 WD	363	{
	364	ulong cp, wp;
	365	FPW data;
43d9616c	366
89930721	367	int i, l, rc, port_width;
89930721 WD	368
	369	if (info->flash_id == FLASH_UNKNOWN) {
	370	return 4;
	371	}
	372	/* get lower word aligned address */
	373	#ifdef FLASH_PORT_WIDTH16
	374	wp = (addr & ~1);
	375	port_width = 2;
	376	#else
	377	wp = (addr & ~3);
	378	port_width = 4;
	379	#endif
	380
	381	/*
	382	* handle unaligned start bytes
	383	*/
	384	if ((l = addr - wp) != 0) {
	385	data = 0;
43d9616c WD	386	for (i = 0, cp = wp; i < l; ++i, ++cp) {
43d9616c WD	387	data = (data << 8) \| ((uchar ) cp);
89930721	388	}
43d9616c	389	for (; i < port_width && cnt > 0; ++i) {
89930721 WD	390	data = (data << 8) \| *src++;
	391	--cnt;
	392	++cp;
	393	}
43d9616c WD	394	for (; cnt == 0 && i < port_width; ++i, ++cp) {
43d9616c WD	395	data = (data << 8) \| ((uchar ) cp);
89930721 WD	396	}
89930721 WD	397
43d9616c	398	if ((rc = write_data (info, wp, data)) != 0) {
89930721 WD	399	return (rc);
	400	}
	401	wp += port_width;
	402	}
	403
	404	/*
	405	* handle word aligned part
	406	*/
89930721 WD	407	while (cnt >= port_width) {
89930721 WD	408	data = 0;
43d9616c	409	for (i = 0; i < port_width; ++i) {
89930721 WD	410	data = (data << 8) \| *src++;
89930721 WD	411	}
43d9616c	412	if ((rc = write_data (info, wp, data)) != 0) {
89930721 WD	413	return (rc);
89930721 WD	414	}
43d9616c	415	wp += port_width;
89930721	416	cnt -= port_width;
89930721 WD	417	}
	418
	419	if (cnt == 0) {
	420	return (0);
	421	}
	422
	423	/*
	424	* handle unaligned tail bytes
	425	*/
	426	data = 0;
43d9616c	427	for (i = 0, cp = wp; i < port_width && cnt > 0; ++i, ++cp) {
89930721 WD	428	data = (data << 8) \| *src++;
	429	--cnt;
	430	}
43d9616c WD	431	for (; i < port_width; ++i, ++cp) {
43d9616c WD	432	data = (data << 8) \| ((uchar ) cp);
89930721 WD	433	}
89930721 WD	434
43d9616c	435	return (write_data (info, wp, data));
89930721 WD	436	}
	437
	438	/*-----------------------------------------------------------------------
	439	* Write a word or halfword to Flash, returns:
	440	* 0 - OK
	441	* 1 - write timeout
	442	* 2 - Flash not erased
	443	*/
43d9616c	444	static int write_data (flash_info_t * info, ulong dest, FPW data)
89930721	445	{
43d9616c	446	FPWV addr = (FPWV ) dest;
89930721 WD	447	ulong status;
	448	ulong start;
	449	int flag;
	450
	451	/* Check if Flash is (sufficiently) erased */
	452	if ((*addr & data) != data) {
43d9616c	453	printf ("not erased at %08lx (%x)\n", (ulong) addr, *addr);
89930721 WD	454	return (2);
	455	}
	456	/* Disable interrupts which might cause a timeout here */
43d9616c	457	flag = disable_interrupts ();
89930721	458
43d9616c	459	addr = (FPW) 0x00400040; / write setup */
89930721 WD	460	*addr = data;
	461
	462	/* re-enable interrupts if necessary */
	463	if (flag)
43d9616c	464	enable_interrupts ();
89930721 WD	465
	466	start = get_timer (0);
	467
43d9616c WD	468	while (((status = *addr) & (FPW) 0x00800080) != (FPW) 0x00800080) {
	469	if (get_timer (start) > CFG_FLASH_WRITE_TOUT) {
	470	addr = (FPW) 0x00FF00FF; / restore read mode */
89930721 WD	471	return (1);
	472	}
	473	}
	474
43d9616c	475	addr = (FPW) 0x00FF00FF; / restore read mode */
89930721 WD	476
	477	return (0);
	478	}