[J-u-boot.git] / board / lantec / flash.c

/*
 * (C) Copyright 2000, 2001
 * Wolfgang Denk, DENX Software Engineering, [email protected].
 *
 * 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
 */

/*
 * Derived from ../tqm8xx/flash.c
 * [Torsten Stevens, FHG IMS; Bruno Achauer, Exet AG]
 */

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

#if defined(CONFIG_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

/*---------------------------------------------------------------------*/
#undef DEBUG_FLASH

#ifdef DEBUG_FLASH
#define DEBUGF(fmt,args...) printf(fmt ,##args)
#else
#define DEBUGF(fmt,args...)
#endif
/*---------------------------------------------------------------------*/

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

/*-----------------------------------------------------------------------
 * Functions
 */
static ulong flash_get_size (vu_long *addr, flash_info_t *info);
static int write_word (flash_info_t *info, ulong dest, ulong 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, size_b1;
	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 */

	DEBUGF("\n## Get flash bank 1 size @ 0x%08x\n",FLASH_BASE0_PRELIM);

	size_b0 = flash_get_size((vu_long *)FLASH_BASE0_PRELIM, &flash_info[0]);

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

	DEBUGF("## Get flash bank 2 size @ 0x%08x\n",FLASH_BASE5_PRELIM);

	size_b1 = flash_get_size((vu_long *)FLASH_BASE5_PRELIM, &flash_info[1]);

	DEBUGF("## Prelim. Flash bank sizes: %08lx + 0x%08lx\n",size_b0,size_b1);

	if (size_b1 > size_b0) {
		printf ("## ERROR: "
			"Bank 1 (0x%08lx = %ld MB) > Bank 0 (0x%08lx = %ld MB)\n",
			size_b1, size_b1<<20,
			size_b0, size_b0<<20
		);
		flash_info[0].flash_id	= FLASH_UNKNOWN;
		flash_info[1].flash_id	= FLASH_UNKNOWN;
		flash_info[0].sector_count	= -1;
		flash_info[1].sector_count	= -1;
		flash_info[0].size		= 0;
		flash_info[1].size		= 0;
		return (0);
	}

	DEBUGF ("## Before remap: "
		"BR0: 0x%08x    OR0: 0x%08x    "
		"BR1: 0x%08x    OR1: 0x%08x\n",
		memctl->memc_br0, memctl->memc_or0,
		memctl->memc_br1, memctl->memc_or1);

	/* 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_MS_GPCM | BR_PS_32 | BR_V;

	DEBUGF("## BR0: 0x%08x    OR0: 0x%08x\n",
		memctl->memc_br0, memctl->memc_or0);

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

	flash_get_offsets (CFG_FLASH_BASE, &flash_info[0]);

	flash_info[0].size = size_b0;

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

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

	if (size_b1) {
		memctl->memc_or5 = CFG_OR_TIMING_FLASH | (-size_b1 & 0xFFFF8000);
		memctl->memc_br5 = ((CFG_FLASH_BASE + size_b0) & BR_BA_MSK) |
				    BR_MS_GPCM | BR_PS_32 | BR_V;

		DEBUGF("## BR5: 0x%08x    OR5: 0x%08x\n",
			memctl->memc_br5, memctl->memc_or5);

		/* Re-do sizing to get full correct info */
		size_b1 = flash_get_size((vu_long *)(CFG_FLASH_BASE + size_b0),
					  &flash_info[1]);

		flash_info[1].size = size_b1;

		flash_get_offsets (CFG_FLASH_BASE + size_b0, &flash_info[1]);

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

#ifdef	CONFIG_ENV_IS_IN_FLASH
		/* ENV protection ON by default */
		flash_protect(FLAG_PROTECT_SET,
			      CFG_ENV_ADDR,
			      CFG_ENV_ADDR+CFG_ENV_SECT_SIZE-1,
			      &flash_info[1]);
#endif
	} else {
		memctl->memc_br5 = 0;		/* invalidate bank */
		memctl->memc_or5 = 0;		/* invalidate bank */

		DEBUGF("## DISABLE BR5: 0x%08x    OR5: 0x%08x\n",
			memctl->memc_br5, memctl->memc_or5);

		flash_info[1].flash_id = FLASH_UNKNOWN;
		flash_info[1].sector_count = -1;
		flash_info[1].size = 0;
	}

	DEBUGF("## Final Flash bank sizes: %08lx + 0x%08lx\n",size_b0,size_b1);

	return (size_b0 + size_b1);
}

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

	/* set up sector start address table */
	if (info->flash_id & FLASH_BTYPE) {
		/* set sector offsets for bottom boot block type	*/
		info->start[0] = base + 0x00000000;
		info->start[1] = base + 0x00008000;
		info->start[2] = base + 0x0000C000;
		info->start[3] = base + 0x00010000;
		for (i = 4; i < info->sector_count; i++) {
			info->start[i] = base + (i * 0x00020000) - 0x00060000;
		}
	} else {
		/* set sector offsets for top boot block type		*/
		i = info->sector_count - 1;
		info->start[i--] = base + info->size - 0x00008000;
		info->start[i--] = base + info->size - 0x0000C000;
		info->start[i--] = base + info->size - 0x00010000;
		for (; i >= 0; 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_AMD:	printf ("AMD ");		break;
	case FLASH_MAN_FUJ:	printf ("FUJITSU ");		break;
	default:		printf ("Unknown Vendor ");	break;
	}

	switch (info->flash_id & FLASH_TYPEMASK) {
	case FLASH_AM400B:	printf ("AM29LV400B (4 Mbit, bottom boot sect)\n");
				break;
	case FLASH_AM400T:	printf ("AM29LV400T (4 Mbit, top boot sector)\n");
				break;
	case FLASH_AM800B:	printf ("AM29LV800B (8 Mbit, bottom boot sect)\n");
				break;
	case FLASH_AM800T:	printf ("AM29LV800T (8 Mbit, top boot sector)\n");
				break;
	case FLASH_AM160B:	printf ("AM29LV160B (16 Mbit, bottom boot sect)\n");
				break;
	case FLASH_AM160T:	printf ("AM29LV160T (16 Mbit, top boot sector)\n");
				break;
	case FLASH_AM320B:	printf ("AM29LV320B (32 Mbit, bottom boot sect)\n");
				break;
	case FLASH_AM320T:	printf ("AM29LV320T (32 Mbit, top boot sector)\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 (vu_long *addr, flash_info_t *info)
{
	short i;
	ulong value;
	ulong base = (ulong)addr;


	/* Write auto select command: read Manufacturer ID */
	addr[0x0555] = 0x00AA00AA;
	addr[0x02AA] = 0x00550055;
	addr[0x0555] = 0x00900090;

	value = addr[0];

	switch (value) {
	case AMD_MANUFACT:
		info->flash_id = FLASH_MAN_AMD;
		break;
	case FUJ_MANUFACT:
		info->flash_id = FLASH_MAN_FUJ;
		break;
	default:
		info->flash_id = FLASH_UNKNOWN;
		info->sector_count = 0;
		info->size = 0;
		return (0);			/* no or unknown flash	*/
	}

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

	switch (value) {
	case AMD_ID_LV400T:
		info->flash_id += FLASH_AM400T;
		info->sector_count = 11;
		info->size = 0x00100000;
		break;				/* => 1 MB		*/

	case AMD_ID_LV400B:
		info->flash_id += FLASH_AM400B;
		info->sector_count = 11;
		info->size = 0x00100000;
		break;				/* => 1 MB		*/

	case AMD_ID_LV800T:
		info->flash_id += FLASH_AM800T;
		info->sector_count = 19;
		info->size = 0x00200000;
		break;				/* => 2 MB		*/

	case AMD_ID_LV800B:
		info->flash_id += FLASH_AM800B;
		info->sector_count = 19;
		info->size = 0x00200000;
		break;				/* => 2 MB		*/

	case AMD_ID_LV160T:
		info->flash_id += FLASH_AM160T;
		info->sector_count = 35;
		info->size = 0x00400000;
		break;				/* => 4 MB		*/

	case AMD_ID_LV160B:
		info->flash_id += FLASH_AM160B;
		info->sector_count = 35;
		info->size = 0x00400000;
		break;				/* => 4 MB		*/
#if 0	/* enable when device IDs are available */
	case AMD_ID_LV320T:
		info->flash_id += FLASH_AM320T;
		info->sector_count = 67;
		info->size = 0x00800000;
		break;				/* => 8 MB		*/

	case AMD_ID_LV320B:
		info->flash_id += FLASH_AM320B;
		info->sector_count = 67;
		info->size = 0x00800000;
		break;				/* => 8 MB		*/
#endif
	default:
		info->flash_id = FLASH_UNKNOWN;
		return (0);			/* => no or unknown flash */

	}

	/* set up sector start address table */
	if (info->flash_id & FLASH_BTYPE) {
		/* set sector offsets for bottom boot block type	*/
		info->start[0] = base + 0x00000000;
		info->start[1] = base + 0x00008000;
		info->start[2] = base + 0x0000C000;
		info->start[3] = base + 0x00010000;
		for (i = 4; i < info->sector_count; i++) {
			info->start[i] = base + (i * 0x00020000) - 0x00060000;
		}
	} else {
		/* set sector offsets for top boot block type		*/
		i = info->sector_count - 1;
		info->start[i--] = base + info->size - 0x00008000;
		info->start[i--] = base + info->size - 0x0000C000;
		info->start[i--] = base + info->size - 0x00010000;
		for (; i >= 0; i--) {
			info->start[i] = base + i * 0x00020000;
		}
	}

	/* check for protected sectors */
	for (i = 0; i < info->sector_count; i++) {
		/* read sector protection at sector address, (A7 .. A0) = 0x02 */
		/* D0 = 1 if protected */
		addr = (volatile unsigned long *)(info->start[i]);
		info->protect[i] = addr[2] & 1;
	}

	/*
	 * Prevent writes to uninitialized FLASH.
	 */
	if (info->flash_id != FLASH_UNKNOWN) {
		addr = (volatile unsigned long *)info->start[0];

		*addr = 0x00F000F0;	/* reset bank */
	}

	return (info->size);
}


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

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

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

	if ((info->flash_id == FLASH_UNKNOWN) ||
	    (info->flash_id > FLASH_AMD_COMP)) {
		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");
	}

	l_sect = -1;

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

	addr[0x0555] = 0x00AA00AA;
	addr[0x02AA] = 0x00550055;
	addr[0x0555] = 0x00800080;
	addr[0x0555] = 0x00AA00AA;
	addr[0x02AA] = 0x00550055;

	/* Start erase on unprotected sectors */
	for (sect = s_first; sect<=s_last; sect++) {
		if (info->protect[sect] == 0) {	/* not protected */
			addr = (vu_long*)(info->start[sect]);
			addr[0] = 0x00300030;
			l_sect = sect;
		}
	}

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

/*-----------------------------------------------------------------------
 * Write a word to Flash, returns:
 * 0 - OK
 * 1 - write timeout
 * 2 - Flash not erased
 */
static int write_word (flash_info_t *info, ulong dest, ulong data)
{
	vu_long *addr = (vu_long*)(info->start[0]);
	ulong start;
	int flag;

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

	addr[0x0555] = 0x00AA00AA;
	addr[0x02AA] = 0x00550055;
	addr[0x0555] = 0x00A000A0;

	*((vu_long *)dest) = data;

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

	/* data polling for D7 */
	start = get_timer (0);
	while ((*((vu_long *)dest) & 0x00800080) != (data & 0x00800080)) {
		if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
			return (1);
		}
	}
	return (0);
}

/*-----------------------------------------------------------------------
 */
Commit	Line	Data
affae2bf WD	1	/*
	2	* (C) Copyright 2000, 2001
	3	* Wolfgang Denk, DENX Software Engineering, [email protected].
	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	/*
	25	* Derived from ../tqm8xx/flash.c
	26	* [Torsten Stevens, FHG IMS; Bruno Achauer, Exet AG]
	27	*/
	28
	29	#include <common.h>
	30	#include <mpc8xx.h>
	31
5a1aceb0	32	#if defined(CONFIG_ENV_IS_IN_FLASH)
affae2bf WD	33	# ifndef CFG_ENV_ADDR
	34	# define CFG_ENV_ADDR (CFG_FLASH_BASE + CFG_ENV_OFFSET)
	35	# endif
	36	# ifndef CFG_ENV_SIZE
	37	# define CFG_ENV_SIZE CFG_ENV_SECT_SIZE
	38	# endif
	39	# ifndef CFG_ENV_SECT_SIZE
	40	# define CFG_ENV_SECT_SIZE CFG_ENV_SIZE
	41	# endif
	42	#endif
	43
	44	/---------------------------------------------------------------------/
	45	#undef DEBUG_FLASH
	46
	47	#ifdef DEBUG_FLASH
	48	#define DEBUGF(fmt,args...) printf(fmt ,##args)
	49	#else
	50	#define DEBUGF(fmt,args...)
	51	#endif
	52	/---------------------------------------------------------------------/
	53
	54	flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
	55
	56	/*-----------------------------------------------------------------------
	57	* Functions
	58	*/
	59	static ulong flash_get_size (vu_long addr, flash_info_t info);
	60	static int write_word (flash_info_t *info, ulong dest, ulong data);
	61	static void flash_get_offsets (ulong base, flash_info_t *info);
	62
	63	/*-----------------------------------------------------------------------
	64	*/
	65
	66	unsigned long flash_init (void)
	67	{
	68	volatile immap_t immap = (immap_t )CFG_IMMR;
	69	volatile memctl8xx_t *memctl = &immap->im_memctl;
	70	unsigned long size_b0, size_b1;
	71	int i;
	72
	73	/* Init: no FLASHes known */
	74	for (i=0; i<CFG_MAX_FLASH_BANKS; ++i) {
	75	flash_info[i].flash_id = FLASH_UNKNOWN;
	76	}
	77
	78	/* Static FLASH Bank configuration here - FIXME XXX */
	79
	80	DEBUGF("\n## Get flash bank 1 size @ 0x%08x\n",FLASH_BASE0_PRELIM);
	81
	82	size_b0 = flash_get_size((vu_long *)FLASH_BASE0_PRELIM, &flash_info[0]);
	83
	84	if (flash_info[0].flash_id == FLASH_UNKNOWN) {
	85	printf ("## Unknown FLASH on Bank 0: "
	86	"ID 0x%lx, Size = 0x%08lx = %ld MB\n",
	87	flash_info[0].flash_id,
	88	size_b0, size_b0<<20);
	89	}
	90
	91	DEBUGF("## Get flash bank 2 size @ 0x%08x\n",FLASH_BASE5_PRELIM);
	92
	93	size_b1 = flash_get_size((vu_long *)FLASH_BASE5_PRELIM, &flash_info[1]);
	94
	95	DEBUGF("## Prelim. Flash bank sizes: %08lx + 0x%08lx\n",size_b0,size_b1);
	96
97	if (size_b1 > size_b0) {
98	printf ("## ERROR: "
99	"Bank 1 (0x%08lx = %ld MB) > Bank 0 (0x%08lx = %ld MB)\n",
100	size_b1, size_b1<<20,
101	size_b0, size_b0<<20
102	);
103	flash_info[0].flash_id = FLASH_UNKNOWN;
104	flash_info[1].flash_id = FLASH_UNKNOWN;
105	flash_info[0].sector_count = -1;
106	flash_info[1].sector_count = -1;
107	flash_info[0].size = 0;
108	flash_info[1].size = 0;
109	return (0);
110	}
111
112	DEBUGF ("## Before remap: "
113	"BR0: 0x%08x OR0: 0x%08x "
114	"BR1: 0x%08x OR1: 0x%08x\n",
115	memctl->memc_br0, memctl->memc_or0,
116	memctl->memc_br1, memctl->memc_or1);
117
118	/* Remap FLASH according to real size */
119	memctl->memc_or0 = CFG_OR_TIMING_FLASH \| (-size_b0 & 0xFFFF8000);
120	memctl->memc_br0 = (CFG_FLASH_BASE & BR_BA_MSK) \| \
121	BR_MS_GPCM \| BR_PS_32 \| BR_V;
122
123	DEBUGF("## BR0: 0x%08x OR0: 0x%08x\n",
124	memctl->memc_br0, memctl->memc_or0);
125
126	/* Re-do sizing to get full correct info */
127	size_b0 = flash_get_size((vu_long *)CFG_FLASH_BASE, &flash_info[0]);
128
129	flash_get_offsets (CFG_FLASH_BASE, &flash_info[0]);
130
131	flash_info[0].size = size_b0;
132
133	#if CFG_MONITOR_BASE >= CFG_FLASH_BASE
134	/* monitor protection ON by default */
135	flash_protect(FLAG_PROTECT_SET,
136	CFG_MONITOR_BASE,
3b57fe0a	137	CFG_MONITOR_BASE+monitor_flash_len-1,
affae2bf WD	138	&flash_info[0]);
	139	#endif
	140
5a1aceb0	141	#ifdef CONFIG_ENV_IS_IN_FLASH
affae2bf WD	142	/* ENV protection ON by default */
	143	flash_protect(FLAG_PROTECT_SET,
	144	CFG_ENV_ADDR,
	145	CFG_ENV_ADDR+CFG_ENV_SECT_SIZE-1,
	146	&flash_info[0]);
	147	#endif
	148
	149	if (size_b1) {
	150	memctl->memc_or5 = CFG_OR_TIMING_FLASH \| (-size_b1 & 0xFFFF8000);
	151	memctl->memc_br5 = ((CFG_FLASH_BASE + size_b0) & BR_BA_MSK) \|
	152	BR_MS_GPCM \| BR_PS_32 \| BR_V;
	153
	154	DEBUGF("## BR5: 0x%08x OR5: 0x%08x\n",
	155	memctl->memc_br5, memctl->memc_or5);
	156
	157	/* Re-do sizing to get full correct info */
	158	size_b1 = flash_get_size((vu_long *)(CFG_FLASH_BASE + size_b0),
	159	&flash_info[1]);
	160
	161	flash_info[1].size = size_b1;
	162
	163	flash_get_offsets (CFG_FLASH_BASE + size_b0, &flash_info[1]);
	164
	165	#if CFG_MONITOR_BASE >= CFG_FLASH_BASE
	166	/* monitor protection ON by default */
	167	flash_protect(FLAG_PROTECT_SET,
	168	CFG_MONITOR_BASE,
3b57fe0a	169	CFG_MONITOR_BASE+monitor_flash_len-1,
affae2bf WD	170	&flash_info[1]);
	171	#endif
	172
5a1aceb0	173	#ifdef CONFIG_ENV_IS_IN_FLASH
affae2bf WD	174	/* ENV protection ON by default */
	175	flash_protect(FLAG_PROTECT_SET,
	176	CFG_ENV_ADDR,
	177	CFG_ENV_ADDR+CFG_ENV_SECT_SIZE-1,
	178	&flash_info[1]);
	179	#endif
	180	} else {
	181	memctl->memc_br5 = 0; /* invalidate bank */
	182	memctl->memc_or5 = 0; /* invalidate bank */
	183
	184	DEBUGF("## DISABLE BR5: 0x%08x OR5: 0x%08x\n",
	185	memctl->memc_br5, memctl->memc_or5);
	186
	187	flash_info[1].flash_id = FLASH_UNKNOWN;
	188	flash_info[1].sector_count = -1;
	189	flash_info[1].size = 0;
	190	}
	191
	192	DEBUGF("## Final Flash bank sizes: %08lx + 0x%08lx\n",size_b0,size_b1);
	193
	194	return (size_b0 + size_b1);
	195	}
	196
	197	/*-----------------------------------------------------------------------
	198	*/
	199	static void flash_get_offsets (ulong base, flash_info_t *info)
	200	{
	201	int i;
	202
	203	/* set up sector start address table */
	204	if (info->flash_id & FLASH_BTYPE) {
	205	/* set sector offsets for bottom boot block type */
	206	info->start[0] = base + 0x00000000;
	207	info->start[1] = base + 0x00008000;
	208	info->start[2] = base + 0x0000C000;
	209	info->start[3] = base + 0x00010000;
	210	for (i = 4; i < info->sector_count; i++) {
	211	info->start[i] = base + (i * 0x00020000) - 0x00060000;
	212	}
	213	} else {
	214	/* set sector offsets for top boot block type */
	215	i = info->sector_count - 1;
	216	info->start[i--] = base + info->size - 0x00008000;
	217	info->start[i--] = base + info->size - 0x0000C000;
	218	info->start[i--] = base + info->size - 0x00010000;
	219	for (; i >= 0; i--) {
	220	info->start[i] = base + i * 0x00020000;
	221	}
	222	}
	223
	224	}
	225
	226	/*-----------------------------------------------------------------------
	227	*/
	228	void flash_print_info (flash_info_t *info)
	229	{
	230	int i;
	231
	232	if (info->flash_id == FLASH_UNKNOWN) {
	233	printf ("missing or unknown FLASH type\n");
	234	return;
	235	}
	236
	237	switch (info->flash_id & FLASH_VENDMASK) {
238	case FLASH_MAN_AMD: printf ("AMD "); break;
239	case FLASH_MAN_FUJ: printf ("FUJITSU "); break;
240	default: printf ("Unknown Vendor "); break;
241	}
242
243	switch (info->flash_id & FLASH_TYPEMASK) {
244	case FLASH_AM400B: printf ("AM29LV400B (4 Mbit, bottom boot sect)\n");
245	break;
246	case FLASH_AM400T: printf ("AM29LV400T (4 Mbit, top boot sector)\n");
247	break;
248	case FLASH_AM800B: printf ("AM29LV800B (8 Mbit, bottom boot sect)\n");
249	break;
250	case FLASH_AM800T: printf ("AM29LV800T (8 Mbit, top boot sector)\n");
251	break;
252	case FLASH_AM160B: printf ("AM29LV160B (16 Mbit, bottom boot sect)\n");
253	break;
254	case FLASH_AM160T: printf ("AM29LV160T (16 Mbit, top boot sector)\n");
255	break;
256	case FLASH_AM320B: printf ("AM29LV320B (32 Mbit, bottom boot sect)\n");
257	break;
258	case FLASH_AM320T: printf ("AM29LV320T (32 Mbit, top boot sector)\n");
259	break;
260	default: printf ("Unknown Chip Type\n");
261	break;
262	}
263
264	printf (" Size: %ld MB in %d Sectors\n",
265	info->size >> 20, info->sector_count);
266
267	printf (" Sector Start Addresses:");
268	for (i=0; i<info->sector_count; ++i) {
269	if ((i % 5) == 0)
270	printf ("\n ");
271	printf (" %08lX%s",
272	info->start[i],
273	info->protect[i] ? " (RO)" : " "
274	);
275	}
276	printf ("\n");
277	return;
278	}
279
280	/*-----------------------------------------------------------------------
281	*/
282
283
284	/*-----------------------------------------------------------------------
285	*/
286
287	/*
288	* The following code cannot be run from FLASH!
289	*/
290
291	static ulong flash_get_size (vu_long addr, flash_info_t info)
292	{
293	short i;
294	ulong value;
295	ulong base = (ulong)addr;
296
297
298	/* Write auto select command: read Manufacturer ID */
299	addr[0x0555] = 0x00AA00AA;
300	addr[0x02AA] = 0x00550055;
301	addr[0x0555] = 0x00900090;
302
303	value = addr[0];
304
305	switch (value) {
306	case AMD_MANUFACT:
307	info->flash_id = FLASH_MAN_AMD;
308	break;
309	case FUJ_MANUFACT:
310	info->flash_id = FLASH_MAN_FUJ;
311	break;
312	default:
313	info->flash_id = FLASH_UNKNOWN;
314	info->sector_count = 0;
315	info->size = 0;
316	return (0); /* no or unknown flash */
317	}
318
319	value = addr[1]; /* device ID */
320
321	switch (value) {
322	case AMD_ID_LV400T:
323	info->flash_id += FLASH_AM400T;
324	info->sector_count = 11;
325	info->size = 0x00100000;
326	break; /* => 1 MB */
327
328	case AMD_ID_LV400B:
329	info->flash_id += FLASH_AM400B;
330	info->sector_count = 11;
331	info->size = 0x00100000;
332	break; /* => 1 MB */
333
334	case AMD_ID_LV800T:
335	info->flash_id += FLASH_AM800T;
336	info->sector_count = 19;
337	info->size = 0x00200000;
338	break; /* => 2 MB */
339
340	case AMD_ID_LV800B:
341	info->flash_id += FLASH_AM800B;
342	info->sector_count = 19;
343	info->size = 0x00200000;
344	break; /* => 2 MB */
345
346	case AMD_ID_LV160T:
347	info->flash_id += FLASH_AM160T;
348	info->sector_count = 35;
349	info->size = 0x00400000;
350	break; /* => 4 MB */
351
352	case AMD_ID_LV160B:
353	info->flash_id += FLASH_AM160B;
354	info->sector_count = 35;
355	info->size = 0x00400000;
356	break; /* => 4 MB */
357	#if 0 /* enable when device IDs are available */
358	case AMD_ID_LV320T:
359	info->flash_id += FLASH_AM320T;
360	info->sector_count = 67;
361	info->size = 0x00800000;
362	break; /* => 8 MB */
363
364	case AMD_ID_LV320B:
365	info->flash_id += FLASH_AM320B;
366	info->sector_count = 67;
367	info->size = 0x00800000;
368	break; /* => 8 MB */
369	#endif
370	default:
371	info->flash_id = FLASH_UNKNOWN;
372	return (0); /* => no or unknown flash */
373
374	}
375
376	/* set up sector start address table */
377	if (info->flash_id & FLASH_BTYPE) {
378	/* set sector offsets for bottom boot block type */
379	info->start[0] = base + 0x00000000;
380	info->start[1] = base + 0x00008000;
381	info->start[2] = base + 0x0000C000;
382	info->start[3] = base + 0x00010000;
383	for (i = 4; i < info->sector_count; i++) {
384	info->start[i] = base + (i * 0x00020000) - 0x00060000;
385	}
386	} else {
387	/* set sector offsets for top boot block type */
388	i = info->sector_count - 1;
389	info->start[i--] = base + info->size - 0x00008000;
390	info->start[i--] = base + info->size - 0x0000C000;
391	info->start[i--] = base + info->size - 0x00010000;
392	for (; i >= 0; i--) {
393	info->start[i] = base + i * 0x00020000;
394	}
395	}
396
397	/* check for protected sectors */
398	for (i = 0; i < info->sector_count; i++) {
399	/* read sector protection at sector address, (A7 .. A0) = 0x02 */
400	/* D0 = 1 if protected */
401	addr = (volatile unsigned long *)(info->start[i]);
402	info->protect[i] = addr[2] & 1;
403	}
404
405	/*
406	* Prevent writes to uninitialized FLASH.
407	*/
408	if (info->flash_id != FLASH_UNKNOWN) {
409	addr = (volatile unsigned long *)info->start[0];
410
411	addr = 0x00F000F0; / reset bank */
412	}
413
414	return (info->size);
415	}
416
417
418	/*-----------------------------------------------------------------------
419	*/
420
421	int flash_erase (flash_info_t *info, int s_first, int s_last)
422	{
423	vu_long addr = (vu_long)(info->start[0]);
424	int flag, prot, sect, l_sect;
425	ulong start, now, last;
426
427	if ((s_first < 0) \|\| (s_first > s_last)) {
428	if (info->flash_id == FLASH_UNKNOWN) {
429	printf ("- missing\n");
430	} else {
431	printf ("- no sectors to erase\n");
432	}
433	return 1;
434	}
435
436	if ((info->flash_id == FLASH_UNKNOWN) \|\|
437	(info->flash_id > FLASH_AMD_COMP)) {
438	printf ("Can't erase unknown flash type %08lx - aborted\n",
439	info->flash_id);
440	return 1;
441	}
442
443	prot = 0;
444	for (sect=s_first; sect<=s_last; ++sect) {
445	if (info->protect[sect]) {
446	prot++;
447	}
448	}
449
450	if (prot) {
451	printf ("- Warning: %d protected sectors will not be erased!\n",
452	prot);
453	} else {
454	printf ("\n");
455	}
456
457	l_sect = -1;
458
459	/* Disable interrupts which might cause a timeout here */
460	flag = disable_interrupts();
461
462	addr[0x0555] = 0x00AA00AA;
463	addr[0x02AA] = 0x00550055;
464	addr[0x0555] = 0x00800080;
465	addr[0x0555] = 0x00AA00AA;
466	addr[0x02AA] = 0x00550055;
467
468	/* Start erase on unprotected sectors */
469	for (sect = s_first; sect<=s_last; sect++) {
470	if (info->protect[sect] == 0) { /* not protected */
471	addr = (vu_long*)(info->start[sect]);
472	addr[0] = 0x00300030;
473	l_sect = sect;
474	}
475	}
476
477	/* re-enable interrupts if necessary */
478	if (flag)
479	enable_interrupts();
480
481	/* wait at least 80us - let's wait 1 ms */
482	udelay (1000);
483
484	/*
485	* We wait for the last triggered sector
486	*/
487	if (l_sect < 0)
488	goto DONE;
489
490	start = get_timer (0);
491	last = start;
492	addr = (vu_long*)(info->start[l_sect]);
493	while ((addr[0] & 0x00800080) != 0x00800080) {
494	if ((now = get_timer(start)) > CFG_FLASH_ERASE_TOUT) {
495	printf ("Timeout\n");
496	return 1;
497	}
498	/* show that we're waiting */
499	if ((now - last) > 1000) { /* every second */
500	putc ('.');
501	last = now;
502	}
503	}
504
505	DONE:
506	/* reset to read mode */
507	addr = (volatile unsigned long *)info->start[0];
508	addr[0] = 0x00F000F0; /* reset bank */
509
510	printf (" done\n");
511	return 0;
512	}
513
514	/*-----------------------------------------------------------------------
515	* Copy memory to flash, returns:
516	* 0 - OK
517	* 1 - write timeout
518	* 2 - Flash not erased
519	*/
520
521	int write_buff (flash_info_t info, uchar src, ulong addr, ulong cnt)
522	{
523	ulong cp, wp, data;
524	int i, l, rc;
525
526	wp = (addr & ~3); /* get lower word aligned address */
527
528	/*
529	* handle unaligned start bytes
530	*/
531	if ((l = addr - wp) != 0) {
532	data = 0;
533	for (i=0, cp=wp; i<l; ++i, ++cp) {
534	data = (data << 8) \| ((uchar )cp);
535	}
536	for (; i<4 && cnt>0; ++i) {
537	data = (data << 8) \| *src++;
538	--cnt;
539	++cp;
540	}
541	for (; cnt==0 && i<4; ++i, ++cp) {
542	data = (data << 8) \| ((uchar )cp);
543	}
544
545	if ((rc = write_word(info, wp, data)) != 0) {
546	return (rc);
547	}
548	wp += 4;
549	}
550
551	/*
552	* handle word aligned part
553	*/
554	while (cnt >= 4) {
555	data = 0;
556	for (i=0; i<4; ++i) {
557	data = (data << 8) \| *src++;
558	}
559	if ((rc = write_word(info, wp, data)) != 0) {
560	return (rc);
561	}
562	wp += 4;
563	cnt -= 4;
564	}
565
566	if (cnt == 0) {
567	return (0);
568	}
569
570	/*
571	* handle unaligned tail bytes
572	*/
573	data = 0;
574	for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) {
575	data = (data << 8) \| *src++;
576	--cnt;
577	}
578	for (; i<4; ++i, ++cp) {
579	data = (data << 8) \| ((uchar )cp);
580	}
581
582	return (write_word(info, wp, data));
583	}
584
585	/*-----------------------------------------------------------------------
586	* Write a word to Flash, returns:
587	* 0 - OK
588	* 1 - write timeout
589	* 2 - Flash not erased
590	*/
591	static int write_word (flash_info_t *info, ulong dest, ulong data)
592	{
593	vu_long addr = (vu_long)(info->start[0]);
594	ulong start;
595	int flag;
596
597	/* Check if Flash is (sufficiently) erased */
598	if ((((vu_long )dest) & data) != data) {
599	return (2);
600	}
601	/* Disable interrupts which might cause a timeout here */
602	flag = disable_interrupts();
603
604	addr[0x0555] = 0x00AA00AA;
605	addr[0x02AA] = 0x00550055;
606	addr[0x0555] = 0x00A000A0;
607
608	((vu_long )dest) = data;
609
610	/* re-enable interrupts if necessary */
611	if (flag)
612	enable_interrupts();
613
614	/* data polling for D7 */
615	start = get_timer (0);
616	while ((((vu_long )dest) & 0x00800080) != (data & 0x00800080)) {
617	if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
618	return (1);
619	}
620	}
621	return (0);
622	}
623
624	/*-----------------------------------------------------------------------
625	*/