[people/ms/u-boot.git] / board / westel / amx860 / flash.c

/*
 * (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
 */

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

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

#if defined(CONFIG_ENV_IS_IN_FLASH)
# ifndef  CONFIG_ENV_ADDR
#  define CONFIG_ENV_ADDR	(CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET)
# endif
# ifndef  CONFIG_ENV_SIZE
#  define CONFIG_ENV_SIZE	CONFIG_ENV_SECT_SIZE
# endif
# ifndef  CONFIG_ENV_SECT_SIZE
#  define CONFIG_ENV_SECT_SIZE  CONFIG_ENV_SIZE
# endif
#endif

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

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

/*-----------------------------------------------------------------------
 * 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 *)CONFIG_SYS_IMMR;
	volatile memctl8xx_t *memctl = &immap->im_memctl;
	unsigned long size_b0, size_b1;
	int i;

	/* Init: no FLASHes known */
	for (i=0; i<CONFIG_SYS_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 - Size = 0x%08lx = %ld MB\n",
			size_b0, size_b0<<20);
	}

#if defined(FLASH_BASE1_PRELIM) && (FLASH_BASE1_PRELIM != 0)
	DEBUGF("## Get flash bank 2 size @ 0x%08x\n",FLASH_BASE1_PRELIM);

	size_b1 = flash_get_size((vu_long *)FLASH_BASE1_PRELIM, &flash_info[1]);

	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);
	}
#else
	size_b1 = 0;
#endif	/* FLASH_BASE1_PRELIM */

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

	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 = CONFIG_SYS_OR_TIMING_FLASH | (-size_b0 & OR_AM_MSK);
	memctl->memc_br0 = (CONFIG_SYS_FLASH_BASE & BR_BA_MSK) | BR_MS_GPCM | 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 *)CONFIG_SYS_FLASH_BASE, &flash_info[0]);

	flash_get_offsets (CONFIG_SYS_FLASH_BASE, &flash_info[0]);

	flash_info[0].size = size_b0;

#if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE
	/* monitor protection ON by default */
	flash_protect(FLAG_PROTECT_SET,
		      CONFIG_SYS_MONITOR_BASE,
		      CONFIG_SYS_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,
		      CONFIG_ENV_ADDR,
		      CONFIG_ENV_ADDR+CONFIG_ENV_SECT_SIZE-1,
		      &flash_info[0]);
#endif

	if (size_b1) {
		memctl->memc_or1 = CONFIG_SYS_OR_TIMING_FLASH | (-size_b1 & OR_AM_MSK);
		memctl->memc_br1 = ((CONFIG_SYS_FLASH_BASE + size_b0) & BR_BA_MSK) |
				   BR_MS_GPCM | BR_V;

		DEBUGF("## BR1: 0x%08x    OR1: 0x%08x\n",
			memctl->memc_br1, memctl->memc_or1);

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

		flash_info[1].size = size_b1;

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

# if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE
		/* monitor protection ON by default */
		flash_protect(FLAG_PROTECT_SET,
			      CONFIG_SYS_MONITOR_BASE,
			      CONFIG_SYS_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,
			      CONFIG_ENV_ADDR,
			      CONFIG_ENV_ADDR+CONFIG_ENV_SECT_SIZE-1,
			      &flash_info[1]);
#endif
	} else {
#ifndef CONFIG_AMX_RAM_EXT
		memctl->memc_br1 = 0;		/* invalidate bank */
		memctl->memc_or1 = 0;		/* invalidate bank */
#endif

		DEBUGF("## DISABLE BR1: 0x%08x    OR1: 0x%08x\n",
			memctl->memc_br1, memctl->memc_or1);

		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_TYPEMASK) == FLASH_AM040) {
		/* set sector offsets for uniform sector type	*/
		for (i = 0; i < info->sector_count; i++) {
			info->start[i] = base + (i * 0x00040000);
		}
	} else 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;
	case FLASH_MAN_BM:	printf ("BRIGHT MICRO ");	break;
	default:		printf ("Unknown Vendor ");	break;
	}

	switch (info->flash_id & FLASH_TYPEMASK) {
	case FLASH_AM040:	printf ("29F040 or 29LV040 (4 Mbit, uniform sectors)\n");
				break;
	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");
}

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


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

/*
 * 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];

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

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

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

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

	switch (value) {
	case AMD_ID_F040B:
		info->flash_id += FLASH_AM040;
		info->sector_count = 8;
		info->size = 0x00200000;
		break;				/* => 2 MB		*/

	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)) > CONFIG_SYS_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) > CONFIG_SYS_FLASH_WRITE_TOUT) {
			return (1);
		}
	}
	return (0);
}

/*-----------------------------------------------------------------------
 */
Commit	Line	Data
affae2bf WD	1	/*
	2	* (C) Copyright 2001
	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	*/
	23
	24	#include <common.h>
	25	#include <mpc8xx.h>
	26
6d0f6bcf	27	flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
affae2bf	28
5a1aceb0	29	#if defined(CONFIG_ENV_IS_IN_FLASH)
0e8d1586	30	# ifndef CONFIG_ENV_ADDR
6d0f6bcf	31	# define CONFIG_ENV_ADDR (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET)
affae2bf	32	# endif
0e8d1586 JCPV	33	# ifndef CONFIG_ENV_SIZE
0e8d1586 JCPV	34	# define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE
affae2bf	35	# endif
0e8d1586 JCPV	36	# ifndef CONFIG_ENV_SECT_SIZE
0e8d1586 JCPV	37	# define CONFIG_ENV_SECT_SIZE CONFIG_ENV_SIZE
affae2bf WD	38	# endif
	39	#endif
	40
	41	/---------------------------------------------------------------------/
	42	#undef DEBUG_FLASH
	43
	44	#ifdef DEBUG_FLASH
	45	#define DEBUGF(fmt,args...) printf(fmt ,##args)
	46	#else
	47	#define DEBUGF(fmt,args...)
	48	#endif
	49	/---------------------------------------------------------------------/
	50
	51	/*-----------------------------------------------------------------------
	52	* Functions
	53	*/
	54	static ulong flash_get_size (vu_long addr, flash_info_t info);
	55	static int write_word (flash_info_t *info, ulong dest, ulong data);
	56	static void flash_get_offsets (ulong base, flash_info_t *info);
	57
	58	/*-----------------------------------------------------------------------
	59	*/
	60
	61	unsigned long flash_init (void)
	62	{
6d0f6bcf	63	volatile immap_t immap = (immap_t )CONFIG_SYS_IMMR;
affae2bf WD	64	volatile memctl8xx_t *memctl = &immap->im_memctl;
	65	unsigned long size_b0, size_b1;
	66	int i;
	67
	68	/* Init: no FLASHes known */
6d0f6bcf	69	for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
affae2bf WD	70	flash_info[i].flash_id = FLASH_UNKNOWN;
	71	}
	72
	73	/* Static FLASH Bank configuration here - FIXME XXX */
	74
	75	DEBUGF("\n## Get flash bank 1 size @ 0x%08x\n",FLASH_BASE0_PRELIM);
	76
	77	size_b0 = flash_get_size((vu_long *)FLASH_BASE0_PRELIM, &flash_info[0]);
	78
	79	if (flash_info[0].flash_id == FLASH_UNKNOWN) {
	80	printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
	81	size_b0, size_b0<<20);
	82	}
	83
	84	#if defined(FLASH_BASE1_PRELIM) && (FLASH_BASE1_PRELIM != 0)
	85	DEBUGF("## Get flash bank 2 size @ 0x%08x\n",FLASH_BASE1_PRELIM);
	86
	87	size_b1 = flash_get_size((vu_long *)FLASH_BASE1_PRELIM, &flash_info[1]);
	88
	89	if (size_b1 > size_b0) {
	90	printf ("## ERROR: "
	91	"Bank 1 (0x%08lx = %ld MB) > Bank 0 (0x%08lx = %ld MB)\n",
	92	size_b1, size_b1<<20,
	93	size_b0, size_b0<<20
	94	);
	95	flash_info[0].flash_id = FLASH_UNKNOWN;
	96	flash_info[1].flash_id = FLASH_UNKNOWN;
	97	flash_info[0].sector_count = -1;
	98	flash_info[1].sector_count = -1;
	99	flash_info[0].size = 0;
	100	flash_info[1].size = 0;
	101	return (0);
	102	}
	103	#else
	104	size_b1 = 0;
	105	#endif /* FLASH_BASE1_PRELIM */
	106
	107	DEBUGF("## Prelim. Flash bank sizes: %08lx + 0x%08lx\n",size_b0,size_b1);
	108
	109	DEBUGF ("## Before remap: "
	110	"BR0: 0x%08x OR0: 0x%08x "
	111	"BR1: 0x%08x OR1: 0x%08x\n",
	112	memctl->memc_br0, memctl->memc_or0,
	113	memctl->memc_br1, memctl->memc_or1);
	114
	115	/* Remap FLASH according to real size */
6d0f6bcf JCPV	116	memctl->memc_or0 = CONFIG_SYS_OR_TIMING_FLASH \| (-size_b0 & OR_AM_MSK);
6d0f6bcf JCPV	117	memctl->memc_br0 = (CONFIG_SYS_FLASH_BASE & BR_BA_MSK) \| BR_MS_GPCM \| BR_V;
affae2bf WD	118
	119	DEBUGF("## BR0: 0x%08x OR0: 0x%08x\n",
	120	memctl->memc_br0, memctl->memc_or0);
	121
	122	/* Re-do sizing to get full correct info */
6d0f6bcf	123	size_b0 = flash_get_size((vu_long *)CONFIG_SYS_FLASH_BASE, &flash_info[0]);
affae2bf	124
6d0f6bcf	125	flash_get_offsets (CONFIG_SYS_FLASH_BASE, &flash_info[0]);
affae2bf WD	126
	127	flash_info[0].size = size_b0;
	128
6d0f6bcf	129	#if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE
affae2bf WD	130	/* monitor protection ON by default */
affae2bf WD	131	flash_protect(FLAG_PROTECT_SET,
6d0f6bcf JCPV	132	CONFIG_SYS_MONITOR_BASE,
6d0f6bcf JCPV	133	CONFIG_SYS_MONITOR_BASE+monitor_flash_len-1,
affae2bf WD	134	&flash_info[0]);
	135	#endif
	136
5a1aceb0	137	#ifdef CONFIG_ENV_IS_IN_FLASH
affae2bf WD	138	/* ENV protection ON by default */
affae2bf WD	139	flash_protect(FLAG_PROTECT_SET,
0e8d1586 JCPV	140	CONFIG_ENV_ADDR,
0e8d1586 JCPV	141	CONFIG_ENV_ADDR+CONFIG_ENV_SECT_SIZE-1,
affae2bf WD	142	&flash_info[0]);
	143	#endif
	144
	145	if (size_b1) {
6d0f6bcf JCPV	146	memctl->memc_or1 = CONFIG_SYS_OR_TIMING_FLASH \| (-size_b1 & OR_AM_MSK);
6d0f6bcf JCPV	147	memctl->memc_br1 = ((CONFIG_SYS_FLASH_BASE + size_b0) & BR_BA_MSK) \|
affae2bf WD	148	BR_MS_GPCM \| BR_V;
	149
	150	DEBUGF("## BR1: 0x%08x OR1: 0x%08x\n",
	151	memctl->memc_br1, memctl->memc_or1);
	152
	153	/* Re-do sizing to get full correct info */
6d0f6bcf	154	size_b1 = flash_get_size((vu_long *)(CONFIG_SYS_FLASH_BASE + size_b0),
affae2bf WD	155	&flash_info[1]);
	156
	157	flash_info[1].size = size_b1;
	158
6d0f6bcf	159	flash_get_offsets (CONFIG_SYS_FLASH_BASE + size_b0, &flash_info[1]);
affae2bf	160
6d0f6bcf	161	# if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE
affae2bf WD	162	/* monitor protection ON by default */
affae2bf WD	163	flash_protect(FLAG_PROTECT_SET,
6d0f6bcf JCPV	164	CONFIG_SYS_MONITOR_BASE,
6d0f6bcf JCPV	165	CONFIG_SYS_MONITOR_BASE+monitor_flash_len-1,
affae2bf WD	166	&flash_info[1]);
	167	# endif
	168
5a1aceb0	169	# ifdef CONFIG_ENV_IS_IN_FLASH
affae2bf WD	170	/* ENV protection ON by default */
affae2bf WD	171	flash_protect(FLAG_PROTECT_SET,
0e8d1586 JCPV	172	CONFIG_ENV_ADDR,
0e8d1586 JCPV	173	CONFIG_ENV_ADDR+CONFIG_ENV_SECT_SIZE-1,
affae2bf WD	174	&flash_info[1]);
	175	#endif
	176	} else {
	177	#ifndef CONFIG_AMX_RAM_EXT
	178	memctl->memc_br1 = 0; /* invalidate bank */
	179	memctl->memc_or1 = 0; /* invalidate bank */
	180	#endif
	181
	182	DEBUGF("## DISABLE BR1: 0x%08x OR1: 0x%08x\n",
	183	memctl->memc_br1, memctl->memc_or1);
	184
	185	flash_info[1].flash_id = FLASH_UNKNOWN;
	186	flash_info[1].sector_count = -1;
	187	flash_info[1].size = 0;
	188	}
	189
	190	DEBUGF("## Final Flash bank sizes: %08lx + 0x%08lx\n",size_b0,size_b1);
	191
	192	return (size_b0 + size_b1);
	193	}
	194
	195	/*-----------------------------------------------------------------------
	196	*/
	197	static void flash_get_offsets (ulong base, flash_info_t *info)
	198	{
	199	int i;
	200
	201	/* set up sector start address table */
	202	if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) {
	203	/* set sector offsets for uniform sector type */
	204	for (i = 0; i < info->sector_count; i++) {
	205	info->start[i] = base + (i * 0x00040000);
	206	}
	207	} else if (info->flash_id & FLASH_BTYPE) {
	208	/* set sector offsets for bottom boot block type */
	209	info->start[0] = base + 0x00000000;
	210	info->start[1] = base + 0x00008000;
	211	info->start[2] = base + 0x0000C000;
	212	info->start[3] = base + 0x00010000;
	213	for (i = 4; i < info->sector_count; i++) {
	214	info->start[i] = base + (i * 0x00020000) - 0x00060000;
	215	}
	216	} else {
	217	/* set sector offsets for top boot block type */
	218	i = info->sector_count - 1;
	219	info->start[i--] = base + info->size - 0x00008000;
	220	info->start[i--] = base + info->size - 0x0000C000;
	221	info->start[i--] = base + info->size - 0x00010000;
	222	for (; i >= 0; i--) {
	223	info->start[i] = base + i * 0x00020000;
	224	}
	225	}
	226	}
	227
	228	/*-----------------------------------------------------------------------
	229	*/
	230	void flash_print_info (flash_info_t *info)
	231	{
	232	int i;
	233
	234	if (info->flash_id == FLASH_UNKNOWN) {
	235	printf ("missing or unknown FLASH type\n");
	236	return;
	237	}
238
239	switch (info->flash_id & FLASH_VENDMASK) {
240	case FLASH_MAN_AMD: printf ("AMD "); break;
241	case FLASH_MAN_FUJ: printf ("FUJITSU "); break;
242	case FLASH_MAN_BM: printf ("BRIGHT MICRO "); break;
243	default: printf ("Unknown Vendor "); break;
244	}
245
246	switch (info->flash_id & FLASH_TYPEMASK) {
247	case FLASH_AM040: printf ("29F040 or 29LV040 (4 Mbit, uniform sectors)\n");
248	break;
249	case FLASH_AM400B: printf ("AM29LV400B (4 Mbit, bottom boot sect)\n");
250	break;
251	case FLASH_AM400T: printf ("AM29LV400T (4 Mbit, top boot sector)\n");
252	break;
253	case FLASH_AM800B: printf ("AM29LV800B (8 Mbit, bottom boot sect)\n");
254	break;
255	case FLASH_AM800T: printf ("AM29LV800T (8 Mbit, top boot sector)\n");
256	break;
257	case FLASH_AM160B: printf ("AM29LV160B (16 Mbit, bottom boot sect)\n");
258	break;
259	case FLASH_AM160T: printf ("AM29LV160T (16 Mbit, top boot sector)\n");
260	break;
261	case FLASH_AM320B: printf ("AM29LV320B (32 Mbit, bottom boot sect)\n");
262	break;
263	case FLASH_AM320T: printf ("AM29LV320T (32 Mbit, top boot sector)\n");
264	break;
265	default: printf ("Unknown Chip Type\n");
266	break;
267	}
268
269	printf (" Size: %ld MB in %d Sectors\n",
270	info->size >> 20, info->sector_count);
271
272	printf (" Sector Start Addresses:");
273	for (i=0; i<info->sector_count; ++i) {
274	if ((i % 5) == 0)
275	printf ("\n ");
276	printf (" %08lX%s",
277	info->start[i],
278	info->protect[i] ? " (RO)" : " "
279	);
280	}
281	printf ("\n");
282	}
283
284	/*-----------------------------------------------------------------------
285	*/
286
287
288	/*-----------------------------------------------------------------------
289	*/
290
291	/*
292	* The following code cannot be run from FLASH!
293	*/
294
295	static ulong flash_get_size (vu_long addr, flash_info_t info)
296	{
297	short i;
298	ulong value;
299	ulong base = (ulong)addr;
300
301	/* Write auto select command: read Manufacturer ID */
302	addr[0x0555] = 0x00AA00AA;
303	addr[0x02AA] = 0x00550055;
304	addr[0x0555] = 0x00900090;
305
306	value = addr[0];
307
308	DEBUGF("Manuf. ID @ 0x%08lx: 0x%08lx\n", (ulong)addr, value);
309
310	switch (value) {
311	case AMD_MANUFACT:
312	info->flash_id = FLASH_MAN_AMD;
313	break;
314	case FUJ_MANUFACT:
315	info->flash_id = FLASH_MAN_FUJ;
316	break;
317	default:
318	info->flash_id = FLASH_UNKNOWN;
319	info->sector_count = 0;
320	info->size = 0;
321	return (0); /* no or unknown flash */
322	}
323
324	value = addr[1]; /* device ID */
325
326	DEBUGF("Device ID @ 0x%08lx: 0x%08lx\n", (ulong)(&addr[1]), value);
327
328	switch (value) {
329	case AMD_ID_F040B:
330	info->flash_id += FLASH_AM040;
331	info->sector_count = 8;
332	info->size = 0x00200000;
333	break; /* => 2 MB */
334
335	case AMD_ID_LV400T:
336	info->flash_id += FLASH_AM400T;
337	info->sector_count = 11;
338	info->size = 0x00100000;
339	break; /* => 1 MB */
340
341	case AMD_ID_LV400B:
342	info->flash_id += FLASH_AM400B;
343	info->sector_count = 11;
344	info->size = 0x00100000;
345	break; /* => 1 MB */
346
347	case AMD_ID_LV800T:
348	info->flash_id += FLASH_AM800T;
349	info->sector_count = 19;
350	info->size = 0x00200000;
351	break; /* => 2 MB */
352
353	case AMD_ID_LV800B:
354	info->flash_id += FLASH_AM800B;
355	info->sector_count = 19;
356	info->size = 0x00200000;
357	break; /* => 2 MB */
358
359	case AMD_ID_LV160T:
360	info->flash_id += FLASH_AM160T;
361	info->sector_count = 35;
362	info->size = 0x00400000;
363	break; /* => 4 MB */
364
365	case AMD_ID_LV160B:
366	info->flash_id += FLASH_AM160B;
367	info->sector_count = 35;
368	info->size = 0x00400000;
369	break; /* => 4 MB */
370	#if 0 /* enable when device IDs are available */
371	case AMD_ID_LV320T:
372	info->flash_id += FLASH_AM320T;
373	info->sector_count = 67;
374	info->size = 0x00800000;
375	break; /* => 8 MB */
376
377	case AMD_ID_LV320B:
378	info->flash_id += FLASH_AM320B;
379	info->sector_count = 67;
380	info->size = 0x00800000;
381	break; /* => 8 MB */
382	#endif
383	default:
384	info->flash_id = FLASH_UNKNOWN;
385	return (0); /* => no or unknown flash */
386	}
387
388	/* set up sector start address table */
389	if (info->flash_id & FLASH_BTYPE) {
390	/* set sector offsets for bottom boot block type */
391	info->start[0] = base + 0x00000000;
392	info->start[1] = base + 0x00008000;
393	info->start[2] = base + 0x0000C000;
394	info->start[3] = base + 0x00010000;
395	for (i = 4; i < info->sector_count; i++) {
396	info->start[i] = base + (i * 0x00020000) - 0x00060000;
397	}
398	} else {
399	/* set sector offsets for top boot block type */
400	i = info->sector_count - 1;
401	info->start[i--] = base + info->size - 0x00008000;
402	info->start[i--] = base + info->size - 0x0000C000;
403	info->start[i--] = base + info->size - 0x00010000;
404	for (; i >= 0; i--) {
405	info->start[i] = base + i * 0x00020000;
406	}
407	}
408
409	/* check for protected sectors */
410	for (i = 0; i < info->sector_count; i++) {
411	/* read sector protection at sector address, (A7 .. A0) = 0x02 */
412	/* D0 = 1 if protected */
413	addr = (volatile unsigned long *)(info->start[i]);
414	info->protect[i] = addr[2] & 1;
415	}
416
417	/*
418	* Prevent writes to uninitialized FLASH.
419	*/
420	if (info->flash_id != FLASH_UNKNOWN) {
421	addr = (volatile unsigned long *)info->start[0];
422
423	addr = 0x00F000F0; / reset bank */
424	}
425
426	return (info->size);
427	}
428
429
430	/*-----------------------------------------------------------------------
431	*/
432
433	int flash_erase (flash_info_t *info, int s_first, int s_last)
434	{
435	vu_long addr = (vu_long)(info->start[0]);
436	int flag, prot, sect, l_sect;
437	ulong start, now, last;
438
439	if ((s_first < 0) \|\| (s_first > s_last)) {
440	if (info->flash_id == FLASH_UNKNOWN) {
441	printf ("- missing\n");
442	} else {
443	printf ("- no sectors to erase\n");
444	}
445	return 1;
446	}
447
448	if ((info->flash_id == FLASH_UNKNOWN) \|\|
449	(info->flash_id > FLASH_AMD_COMP)) {
450	printf ("Can't erase unknown flash type %08lx - aborted\n",
451	info->flash_id);
452	return 1;
453	}
454
455	prot = 0;
456	for (sect=s_first; sect<=s_last; ++sect) {
457	if (info->protect[sect]) {
458	prot++;
459	}
460	}
461
462	if (prot) {
463	printf ("- Warning: %d protected sectors will not be erased!\n",
464	prot);
465	} else {
466	printf ("\n");
467	}
468
469	l_sect = -1;
470
471	/* Disable interrupts which might cause a timeout here */
472	flag = disable_interrupts();
473
474	addr[0x0555] = 0x00AA00AA;
475	addr[0x02AA] = 0x00550055;
476	addr[0x0555] = 0x00800080;
477	addr[0x0555] = 0x00AA00AA;
478	addr[0x02AA] = 0x00550055;
479
480	/* Start erase on unprotected sectors */
481	for (sect = s_first; sect<=s_last; sect++) {
482	if (info->protect[sect] == 0) { /* not protected */
483	addr = (vu_long*)(info->start[sect]);
484	addr[0] = 0x00300030;
485	l_sect = sect;
486	}
487	}
488
489	/* re-enable interrupts if necessary */
490	if (flag)
491	enable_interrupts();
492
493	/* wait at least 80us - let's wait 1 ms */
494	udelay (1000);
495
496	/*
497	* We wait for the last triggered sector
498	*/
499	if (l_sect < 0)
500	goto DONE;
501
502	start = get_timer (0);
503	last = start;
504	addr = (vu_long*)(info->start[l_sect]);
505	while ((addr[0] & 0x00800080) != 0x00800080) {
6d0f6bcf	506	if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
affae2bf WD	507	printf ("Timeout\n");
	508	return 1;
	509	}
	510	/* show that we're waiting */
	511	if ((now - last) > 1000) { /* every second */
	512	putc ('.');
	513	last = now;
	514	}
	515	}
	516
	517	DONE:
	518	/* reset to read mode */
	519	addr = (volatile unsigned long *)info->start[0];
	520	addr[0] = 0x00F000F0; /* reset bank */
	521
	522	printf (" done\n");
	523	return 0;
	524	}
	525
	526	/*-----------------------------------------------------------------------
	527	* Copy memory to flash, returns:
	528	* 0 - OK
	529	* 1 - write timeout
	530	* 2 - Flash not erased
	531	*/
	532
	533	int write_buff (flash_info_t info, uchar src, ulong addr, ulong cnt)
	534	{
	535	ulong cp, wp, data;
	536	int i, l, rc;
	537
	538	wp = (addr & ~3); /* get lower word aligned address */
	539
	540	/*
	541	* handle unaligned start bytes
	542	*/
	543	if ((l = addr - wp) != 0) {
	544	data = 0;
	545	for (i=0, cp=wp; i<l; ++i, ++cp) {
	546	data = (data << 8) \| ((uchar )cp);
	547	}
	548	for (; i<4 && cnt>0; ++i) {
	549	data = (data << 8) \| *src++;
	550	--cnt;
	551	++cp;
	552	}
	553	for (; cnt==0 && i<4; ++i, ++cp) {
	554	data = (data << 8) \| ((uchar )cp);
	555	}
	556
	557	if ((rc = write_word(info, wp, data)) != 0) {
	558	return (rc);
	559	}
	560	wp += 4;
	561	}
	562
	563	/*
	564	* handle word aligned part
	565	*/
	566	while (cnt >= 4) {
	567	data = 0;
	568	for (i=0; i<4; ++i) {
	569	data = (data << 8) \| *src++;
	570	}
571	if ((rc = write_word(info, wp, data)) != 0) {
572	return (rc);
573	}
574	wp += 4;
575	cnt -= 4;
576	}
577
578	if (cnt == 0) {
579	return (0);
580	}
581
582	/*
583	* handle unaligned tail bytes
584	*/
585	data = 0;
586	for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) {
587	data = (data << 8) \| *src++;
588	--cnt;
589	}
590	for (; i<4; ++i, ++cp) {
591	data = (data << 8) \| ((uchar )cp);
592	}
593
594	return (write_word(info, wp, data));
595	}
596
597	/*-----------------------------------------------------------------------
598	* Write a word to Flash, returns:
599	* 0 - OK
600	* 1 - write timeout
601	* 2 - Flash not erased
602	*/
603	static int write_word (flash_info_t *info, ulong dest, ulong data)
604	{
605	vu_long addr = (vu_long)(info->start[0]);
606	ulong start;
607	int flag;
608
609	/* Check if Flash is (sufficiently) erased */
610	if ((((vu_long )dest) & data) != data) {
611	return (2);
612	}
613	/* Disable interrupts which might cause a timeout here */
614	flag = disable_interrupts();
615
616	addr[0x0555] = 0x00AA00AA;
617	addr[0x02AA] = 0x00550055;
618	addr[0x0555] = 0x00A000A0;
619
620	((vu_long )dest) = data;
621
622	/* re-enable interrupts if necessary */
623	if (flag)
624	enable_interrupts();
625
626	/* data polling for D7 */
627	start = get_timer (0);
628	while ((((vu_long )dest) & 0x00800080) != (data & 0x00800080)) {
6d0f6bcf	629	if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
affae2bf WD	630	return (1);
	631	}
	632	}
	633	return (0);
	634	}
	635
	636	/*-----------------------------------------------------------------------
	637	*/