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

/*
 * (C) Copyright 2006
 * Stefan Roese, DENX Software Engineering, sr@denx.de.
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <asm/processor.h>

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

/*
 * Functions
 */
static int write_word(flash_info_t *info, ulong dest, ulong data);

void flash_print_info(flash_info_t *info)
{
	int i;
	int k;
	int size;
	int erased;
	volatile unsigned long *flash;

	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_SST:	printf ("SST ");		break;
	case FLASH_MAN_STM:	printf ("ST ");			break;
	case FLASH_MAN_EXCEL:	printf ("Excel Semiconductor "); 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_AM320T:	printf ("AM29LV320T (32 M, top sector)\n");
		break;
	case FLASH_AM320B:	printf ("AM29LV320B (32 M, bottom sector)\n");
		break;
	case FLASH_AMDL322T:	printf ("AM29DL322T (32 M, top sector)\n");
		break;
	case FLASH_AMDL322B:	printf ("AM29DL322B (32 M, bottom sector)\n");
		break;
	case FLASH_AMDL323T:	printf ("AM29DL323T (32 M, top sector)\n");
		break;
	case FLASH_AMDL323B:	printf ("AM29DL323B (32 M, bottom sector)\n");
		break;
	case FLASH_SST020:	printf ("SST39LF/VF020 (2 Mbit, uniform sector size)\n");
		break;
	case FLASH_SST040:	printf ("SST39LF/VF040 (4 Mbit, uniform sector size)\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) {
#ifdef CONFIG_SYS_FLASH_EMPTY_INFO
		/*
		 * Check if whole sector is erased
		 */
		if (i != (info->sector_count-1))
			size = info->start[i+1] - info->start[i];
		else
			size = info->start[0] + info->size - info->start[i];
		erased = 1;
		flash = (volatile unsigned long *)info->start[i];
		size = size >> 2;        /* divide by 4 for longword access */
		for (k=0; k<size; k++) {
			if (*flash++ != 0xffffffff) {
				erased = 0;
				break;
			}
		}

		if ((i % 5) == 0)
			printf ("\n   ");
		/* print empty and read-only info */
		printf (" %08lX%s%s",
			info->start[i],
			erased ? " E" : "  ",
			info->protect[i] ? "RO " : "   ");
#else
		if ((i % 5) == 0)
			printf ("\n   ");
		printf (" %08lX%s",
			info->start[i],
			info->protect[i] ? " (RO)" : "     ");
#endif

	}
	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;
	short n;
	CONFIG_SYS_FLASH_WORD_SIZE value;
	ulong base = (ulong)addr;
	volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *)addr;

	/* Write auto select command: read Manufacturer ID */
	addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00AA00AA;
	addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00550055;
	addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00900090;

	value = addr2[CONFIG_SYS_FLASH_READ0];

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

	value = addr2[CONFIG_SYS_FLASH_READ1];		/* device ID		*/

	switch (value) {
	case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV400T:
		info->flash_id += FLASH_AM400T;
		info->sector_count = 11;
		info->size = 0x00080000;
		break;				/* => 0.5 MB		*/

	case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV400B:
		info->flash_id += FLASH_AM400B;
		info->sector_count = 11;
		info->size = 0x00080000;
		break;				/* => 0.5 MB		*/

	case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV800T:
		info->flash_id += FLASH_AM800T;
		info->sector_count = 19;
		info->size = 0x00100000;
		break;				/* => 1 MB		*/

	case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV800B:
		info->flash_id += FLASH_AM800B;
		info->sector_count = 19;
		info->size = 0x00100000;
		break;				/* => 1 MB		*/

	case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV160T:
		info->flash_id += FLASH_AM160T;
		info->sector_count = 35;
		info->size = 0x00200000;
		break;				/* => 2 MB		*/

	case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV160B:
		info->flash_id += FLASH_AM160B;
		info->sector_count = 35;
		info->size = 0x00200000;
		break;				/* => 2 MB		*/

	case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV320T:
		info->flash_id += FLASH_AM320T;
		info->sector_count = 71;
		info->size = 0x00400000;  break;	/* => 4 MB	*/

	case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV320B:
		info->flash_id += FLASH_AM320B;
		info->sector_count = 71;
		info->size = 0x00400000;  break;	/* => 4 MB	*/

	case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_DL322T:
		info->flash_id += FLASH_AMDL322T;
		info->sector_count = 71;
		info->size = 0x00400000;  break;	/* => 4 MB	*/

	case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_DL322B:
		info->flash_id += FLASH_AMDL322B;
		info->sector_count = 71;
		info->size = 0x00400000;  break;	/* => 4 MB	*/

	case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_DL323T:
		info->flash_id += FLASH_AMDL323T;
		info->sector_count = 71;
		info->size = 0x00400000;  break;	/* => 4 MB	*/

	case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_DL323B:
		info->flash_id += FLASH_AMDL323B;
		info->sector_count = 71;
		info->size = 0x00400000;  break;	/* => 4 MB	*/

	case (CONFIG_SYS_FLASH_WORD_SIZE)SST_ID_xF020:
		info->flash_id += FLASH_SST020;
		info->sector_count = 64;
		info->size = 0x00040000;
		break;				/* => 256 kB		*/

	case (CONFIG_SYS_FLASH_WORD_SIZE)SST_ID_xF040:
		info->flash_id += FLASH_SST040;
		info->sector_count = 128;
		info->size = 0x00080000;
		break;				/* => 512 kB		*/

	default:
		info->flash_id = FLASH_UNKNOWN;
		return (0);			/* => no or unknown flash */

	}

	/* set up sector start address table */
	if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) {
		for (i = 0; i < info->sector_count; i++)
			info->start[i] = base + (i * 0x00001000);
	} else if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL322B) ||
		   ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL323B) ||
		   ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320B) ||
		   ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL324B)) {
		/* set sector offsets for bottom boot block type	*/
		for (i=0; i<8; ++i) {		/*  8 x 8k boot sectors	*/
			info->start[i] = base;
			base += 8 << 10;
		}
		while (i < info->sector_count) {	/* 64k regular sectors	*/
			info->start[i] = base;
			base += 64 << 10;
			++i;
		}
	} else if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL322T) ||
		   ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL323T) ||
		   ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320T) ||
		   ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL324T)) {
		/* set sector offsets for top boot block type		*/
		base += info->size;
		i = info->sector_count;
		for (n=0; n<8; ++n) {		/*  8 x 8k boot sectors	*/
			base -= 8 << 10;
			--i;
			info->start[i] = base;
		}
		while (i > 0) {			/* 64k regular sectors	*/
			base -= 64 << 10;
			--i;
			info->start[i] = base;
		}
	} else {
		if (info->flash_id & FLASH_BTYPE) {
			/* set sector offsets for bottom boot block type	*/
			info->start[0] = base + 0x00000000;
			info->start[1] = base + 0x00004000;
			info->start[2] = base + 0x00006000;
			info->start[3] = base + 0x00008000;
			for (i = 4; i < info->sector_count; i++) {
				info->start[i] = base + (i * 0x00010000) - 0x00030000;
			}
		} else {
			/* set sector offsets for top boot block type		*/
			i = info->sector_count - 1;
			info->start[i--] = base + info->size - 0x00004000;
			info->start[i--] = base + info->size - 0x00006000;
			info->start[i--] = base + info->size - 0x00008000;
			for (; i >= 0; i--) {
				info->start[i] = base + i * 0x00010000;
			}
		}
	}

	/* 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 */
		addr2 = (volatile CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[i]);
		if ((info->flash_id & FLASH_VENDMASK) != FLASH_MAN_AMD)
			info->protect[i] = 0;
		else
			info->protect[i] = addr2[CONFIG_SYS_FLASH_READ2] & 1;
	}

	/*
	 * Prevent writes to uninitialized FLASH.
	 */
	if (info->flash_id != FLASH_UNKNOWN) {
		addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *)info->start[0];
		*addr2 = (CONFIG_SYS_FLASH_WORD_SIZE)0x00F000F0;	/* reset bank */
	}

	return (info->size);
}


int flash_erase(flash_info_t *info, int s_first, int s_last)
{
	volatile CONFIG_SYS_FLASH_WORD_SIZE *addr = (CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[0]);
	volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2;
	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) {
		printf ("Can't erase unknown flash type - aborted\n");
		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();

	/* Start erase on unprotected sectors */
	for (sect = s_first; sect<=s_last; sect++) {
		if (info->protect[sect] == 0) {	/* not protected */
			addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[sect]);
			if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) {
				addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00AA00AA;
				addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00550055;
				addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080;
				addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00AA00AA;
				addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00550055;
				addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00300030;  /* sector erase */

				/* re-enable interrupts if necessary */
				if (flag) {
					enable_interrupts();
					flag = 0;
				}

				/* data polling for D7 */
				start = get_timer (0);
				while ((addr2[0] & (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080) !=
				       (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080) {
					if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT)
						return (1);
				}
			} else {
				if (sect == s_first) {
					addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00AA00AA;
					addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00550055;
					addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080;
					addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00AA00AA;
					addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00550055;
				}
				addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00300030;  /* sector erase */
			}
			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 = (CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[l_sect]);
	while ((addr[0] & (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080) != (CONFIG_SYS_FLASH_WORD_SIZE)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 = (CONFIG_SYS_FLASH_WORD_SIZE *)info->start[0];
	addr[0] = (CONFIG_SYS_FLASH_WORD_SIZE)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)
{
	volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[0]);
	volatile CONFIG_SYS_FLASH_WORD_SIZE *dest2 = (CONFIG_SYS_FLASH_WORD_SIZE *)dest;
	volatile CONFIG_SYS_FLASH_WORD_SIZE *data2 = (CONFIG_SYS_FLASH_WORD_SIZE *)&data;
	ulong start;
	int flag;
	int i;

	/* 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();

	for (i=0; i<4/sizeof(CONFIG_SYS_FLASH_WORD_SIZE); i++) {
		addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00AA00AA;
		addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00550055;
		addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00A000A0;

		dest2[i] = data2[i];

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

		/* data polling for D7 */
		start = get_timer (0);
		while ((dest2[i] & (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080) !=
		       (data2[i] & (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080)) {
			if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT)
				return (1);
		}
	}

	return (0);
}
Commit	Line	Data
ba94a1bb WD	1	/*
	2	* (C) Copyright 2006
	3	* Stefan Roese, DENX Software Engineering, sr@denx.de.
	4	*
1a459660	5	* SPDX-License-Identifier: GPL-2.0+
ba94a1bb WD	6	*/
	7
	8	#include <common.h>
	9	#include <asm/processor.h>
	10
6d0f6bcf	11	flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
ba94a1bb WD	12
	13	/*
	14	* Functions
	15	*/
	16	static int write_word(flash_info_t *info, ulong dest, ulong data);
	17
	18	void flash_print_info(flash_info_t *info)
	19	{
	20	int i;
	21	int k;
	22	int size;
	23	int erased;
	24	volatile unsigned long *flash;
	25
	26	if (info->flash_id == FLASH_UNKNOWN) {
	27	printf ("missing or unknown FLASH type\n");
	28	return;
	29	}
	30
	31	switch (info->flash_id & FLASH_VENDMASK) {
	32	case FLASH_MAN_AMD: printf ("AMD "); break;
	33	case FLASH_MAN_FUJ: printf ("FUJITSU "); break;
	34	case FLASH_MAN_SST: printf ("SST "); break;
5bc528fa	35	case FLASH_MAN_STM: printf ("ST "); break;
ba94a1bb WD	36	case FLASH_MAN_EXCEL: printf ("Excel Semiconductor "); break;
	37	default: printf ("Unknown Vendor "); break;
	38	}
	39
	40	switch (info->flash_id & FLASH_TYPEMASK) {
	41	case FLASH_AM400B: printf ("AM29LV400B (4 Mbit, bottom boot sect)\n");
	42	break;
	43	case FLASH_AM400T: printf ("AM29LV400T (4 Mbit, top boot sector)\n");
	44	break;
	45	case FLASH_AM800B: printf ("AM29LV800B (8 Mbit, bottom boot sect)\n");
	46	break;
	47	case FLASH_AM800T: printf ("AM29LV800T (8 Mbit, top boot sector)\n");
	48	break;
	49	case FLASH_AM160B: printf ("AM29LV160B (16 Mbit, bottom boot sect)\n");
	50	break;
	51	case FLASH_AM160T: printf ("AM29LV160T (16 Mbit, top boot sector)\n");
	52	break;
	53	case FLASH_AM320T: printf ("AM29LV320T (32 M, top sector)\n");
	54	break;
	55	case FLASH_AM320B: printf ("AM29LV320B (32 M, bottom sector)\n");
	56	break;
	57	case FLASH_AMDL322T: printf ("AM29DL322T (32 M, top sector)\n");
	58	break;
	59	case FLASH_AMDL322B: printf ("AM29DL322B (32 M, bottom sector)\n");
	60	break;
	61	case FLASH_AMDL323T: printf ("AM29DL323T (32 M, top sector)\n");
	62	break;
	63	case FLASH_AMDL323B: printf ("AM29DL323B (32 M, bottom sector)\n");
	64	break;
	65	case FLASH_SST020: printf ("SST39LF/VF020 (2 Mbit, uniform sector size)\n");
	66	break;
	67	case FLASH_SST040: printf ("SST39LF/VF040 (4 Mbit, uniform sector size)\n");
	68	break;
	69	default: printf ("Unknown Chip Type\n");
	70	break;
	71	}
	72
	73	printf (" Size: %ld MB in %d Sectors\n",
	74	info->size >> 20, info->sector_count);
	75
	76	printf (" Sector Start Addresses:");
	77	for (i=0; i<info->sector_count; ++i) {
6d0f6bcf	78	#ifdef CONFIG_SYS_FLASH_EMPTY_INFO
ba94a1bb WD	79	/*
	80	* Check if whole sector is erased
	81	*/
	82	if (i != (info->sector_count-1))
	83	size = info->start[i+1] - info->start[i];
	84	else
	85	size = info->start[0] + info->size - info->start[i];
	86	erased = 1;
	87	flash = (volatile unsigned long *)info->start[i];
	88	size = size >> 2; /* divide by 4 for longword access */
	89	for (k=0; k<size; k++) {
	90	if (*flash++ != 0xffffffff) {
	91	erased = 0;
	92	break;
	93	}
	94	}
	95
	96	if ((i % 5) == 0)
	97	printf ("\n ");
	98	/* print empty and read-only info */
	99	printf (" %08lX%s%s",
	100	info->start[i],
	101	erased ? " E" : " ",
	102	info->protect[i] ? "RO " : " ");
	103	#else
	104	if ((i % 5) == 0)
	105	printf ("\n ");
	106	printf (" %08lX%s",
	107	info->start[i],
	108	info->protect[i] ? " (RO)" : " ");
	109	#endif
	110
	111	}
	112	printf ("\n");
	113	return;
	114	}
	115
	116	/*
	117	* The following code cannot be run from FLASH!
	118	*/
	119	static ulong flash_get_size(vu_long addr, flash_info_t info)
	120	{
	121	short i;
	122	short n;
6d0f6bcf	123	CONFIG_SYS_FLASH_WORD_SIZE value;
ba94a1bb	124	ulong base = (ulong)addr;
6d0f6bcf	125	volatile CONFIG_SYS_FLASH_WORD_SIZE addr2 = (CONFIG_SYS_FLASH_WORD_SIZE )addr;
ba94a1bb WD	126
ba94a1bb WD	127	/* Write auto select command: read Manufacturer ID */
6d0f6bcf JCPV	128	addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00AA00AA;
	129	addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00550055;
	130	addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00900090;
ba94a1bb	131
6d0f6bcf	132	value = addr2[CONFIG_SYS_FLASH_READ0];
ba94a1bb WD	133
ba94a1bb WD	134	switch (value) {
6d0f6bcf	135	case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_MANUFACT:
ba94a1bb WD	136	info->flash_id = FLASH_MAN_AMD;
ba94a1bb WD	137	break;
6d0f6bcf	138	case (CONFIG_SYS_FLASH_WORD_SIZE)FUJ_MANUFACT:
ba94a1bb WD	139	info->flash_id = FLASH_MAN_FUJ;
ba94a1bb WD	140	break;
6d0f6bcf	141	case (CONFIG_SYS_FLASH_WORD_SIZE)SST_MANUFACT:
ba94a1bb WD	142	info->flash_id = FLASH_MAN_SST;
ba94a1bb WD	143	break;
6d0f6bcf	144	case (CONFIG_SYS_FLASH_WORD_SIZE)STM_MANUFACT:
5bc528fa SR	145	info->flash_id = FLASH_MAN_STM;
5bc528fa SR	146	break;
6d0f6bcf	147	case (CONFIG_SYS_FLASH_WORD_SIZE)EXCEL_MANUFACT:
ba94a1bb WD	148	info->flash_id = FLASH_MAN_EXCEL;
	149	break;
	150	default:
	151	info->flash_id = FLASH_UNKNOWN;
	152	info->sector_count = 0;
	153	info->size = 0;
	154	return (0); /* no or unknown flash */
	155	}
	156
6d0f6bcf	157	value = addr2[CONFIG_SYS_FLASH_READ1]; /* device ID */
ba94a1bb WD	158
ba94a1bb WD	159	switch (value) {
6d0f6bcf	160	case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV400T:
ba94a1bb WD	161	info->flash_id += FLASH_AM400T;
	162	info->sector_count = 11;
	163	info->size = 0x00080000;
	164	break; /* => 0.5 MB */
	165
6d0f6bcf	166	case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV400B:
ba94a1bb WD	167	info->flash_id += FLASH_AM400B;
	168	info->sector_count = 11;
	169	info->size = 0x00080000;
	170	break; /* => 0.5 MB */
	171
6d0f6bcf	172	case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV800T:
ba94a1bb WD	173	info->flash_id += FLASH_AM800T;
	174	info->sector_count = 19;
	175	info->size = 0x00100000;
	176	break; /* => 1 MB */
	177
6d0f6bcf	178	case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV800B:
ba94a1bb WD	179	info->flash_id += FLASH_AM800B;
	180	info->sector_count = 19;
	181	info->size = 0x00100000;
	182	break; /* => 1 MB */
	183
6d0f6bcf	184	case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV160T:
ba94a1bb WD	185	info->flash_id += FLASH_AM160T;
	186	info->sector_count = 35;
	187	info->size = 0x00200000;
	188	break; /* => 2 MB */
	189
6d0f6bcf	190	case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV160B:
ba94a1bb WD	191	info->flash_id += FLASH_AM160B;
	192	info->sector_count = 35;
	193	info->size = 0x00200000;
	194	break; /* => 2 MB */
	195
6d0f6bcf	196	case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV320T:
ba94a1bb WD	197	info->flash_id += FLASH_AM320T;
	198	info->sector_count = 71;
	199	info->size = 0x00400000; break; /* => 4 MB */
	200
6d0f6bcf	201	case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV320B:
ba94a1bb WD	202	info->flash_id += FLASH_AM320B;
	203	info->sector_count = 71;
	204	info->size = 0x00400000; break; /* => 4 MB */
	205
6d0f6bcf	206	case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_DL322T:
ba94a1bb WD	207	info->flash_id += FLASH_AMDL322T;
	208	info->sector_count = 71;
	209	info->size = 0x00400000; break; /* => 4 MB */
	210
6d0f6bcf	211	case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_DL322B:
ba94a1bb WD	212	info->flash_id += FLASH_AMDL322B;
	213	info->sector_count = 71;
	214	info->size = 0x00400000; break; /* => 4 MB */
	215
6d0f6bcf	216	case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_DL323T:
ba94a1bb WD	217	info->flash_id += FLASH_AMDL323T;
	218	info->sector_count = 71;
	219	info->size = 0x00400000; break; /* => 4 MB */
	220
6d0f6bcf	221	case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_DL323B:
ba94a1bb WD	222	info->flash_id += FLASH_AMDL323B;
	223	info->sector_count = 71;
	224	info->size = 0x00400000; break; /* => 4 MB */
	225
6d0f6bcf	226	case (CONFIG_SYS_FLASH_WORD_SIZE)SST_ID_xF020:
ba94a1bb WD	227	info->flash_id += FLASH_SST020;
	228	info->sector_count = 64;
	229	info->size = 0x00040000;
	230	break; /* => 256 kB */
	231
6d0f6bcf	232	case (CONFIG_SYS_FLASH_WORD_SIZE)SST_ID_xF040:
ba94a1bb WD	233	info->flash_id += FLASH_SST040;
	234	info->sector_count = 128;
	235	info->size = 0x00080000;
	236	break; /* => 512 kB */
	237
	238	default:
	239	info->flash_id = FLASH_UNKNOWN;
	240	return (0); /* => no or unknown flash */
	241
	242	}
	243
	244	/* set up sector start address table */
	245	if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) {
	246	for (i = 0; i < info->sector_count; i++)
	247	info->start[i] = base + (i * 0x00001000);
	248	} else if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL322B) \|\|
	249	((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL323B) \|\|
	250	((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320B) \|\|
	251	((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL324B)) {
	252	/* set sector offsets for bottom boot block type */
	253	for (i=0; i<8; ++i) { /* 8 x 8k boot sectors */
	254	info->start[i] = base;
	255	base += 8 << 10;
	256	}
	257	while (i < info->sector_count) { /* 64k regular sectors */
	258	info->start[i] = base;
	259	base += 64 << 10;
	260	++i;
	261	}
	262	} else if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL322T) \|\|
	263	((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL323T) \|\|
	264	((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320T) \|\|
	265	((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL324T)) {
	266	/* set sector offsets for top boot block type */
	267	base += info->size;
	268	i = info->sector_count;
	269	for (n=0; n<8; ++n) { /* 8 x 8k boot sectors */
	270	base -= 8 << 10;
	271	--i;
	272	info->start[i] = base;
	273	}
	274	while (i > 0) { /* 64k regular sectors */
	275	base -= 64 << 10;
	276	--i;
	277	info->start[i] = base;
	278	}
	279	} else {
	280	if (info->flash_id & FLASH_BTYPE) {
	281	/* set sector offsets for bottom boot block type */
	282	info->start[0] = base + 0x00000000;
	283	info->start[1] = base + 0x00004000;
	284	info->start[2] = base + 0x00006000;
	285	info->start[3] = base + 0x00008000;
	286	for (i = 4; i < info->sector_count; i++) {
	287	info->start[i] = base + (i * 0x00010000) - 0x00030000;
	288	}
	289	} else {
	290	/* set sector offsets for top boot block type */
	291	i = info->sector_count - 1;
	292	info->start[i--] = base + info->size - 0x00004000;
	293	info->start[i--] = base + info->size - 0x00006000;
	294	info->start[i--] = base + info->size - 0x00008000;
	295	for (; i >= 0; i--) {
	296	info->start[i] = base + i * 0x00010000;
297	}
298	}
299	}
300
301	/* check for protected sectors */
302	for (i = 0; i < info->sector_count; i++) {
303	/* read sector protection at sector address, (A7 .. A0) = 0x02 */
304	/* D0 = 1 if protected */
6d0f6bcf	305	addr2 = (volatile CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[i]);
ba94a1bb WD	306	if ((info->flash_id & FLASH_VENDMASK) != FLASH_MAN_AMD)
	307	info->protect[i] = 0;
	308	else
6d0f6bcf	309	info->protect[i] = addr2[CONFIG_SYS_FLASH_READ2] & 1;
ba94a1bb WD	310	}
	311
	312	/*
	313	* Prevent writes to uninitialized FLASH.
	314	*/
	315	if (info->flash_id != FLASH_UNKNOWN) {
6d0f6bcf JCPV	316	addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *)info->start[0];
6d0f6bcf JCPV	317	addr2 = (CONFIG_SYS_FLASH_WORD_SIZE)0x00F000F0; / reset bank */
ba94a1bb WD	318	}
	319
	320	return (info->size);
	321	}
	322
	323
	324	int flash_erase(flash_info_t *info, int s_first, int s_last)
	325	{
6d0f6bcf JCPV	326	volatile CONFIG_SYS_FLASH_WORD_SIZE addr = (CONFIG_SYS_FLASH_WORD_SIZE )(info->start[0]);
6d0f6bcf JCPV	327	volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2;
ba94a1bb WD	328	int flag, prot, sect, l_sect;
	329	ulong start, now, last;
	330
	331	if ((s_first < 0) \|\| (s_first > s_last)) {
	332	if (info->flash_id == FLASH_UNKNOWN)
	333	printf ("- missing\n");
	334	else
	335	printf ("- no sectors to erase\n");
	336	return 1;
	337	}
	338
	339	if (info->flash_id == FLASH_UNKNOWN) {
	340	printf ("Can't erase unknown flash type - aborted\n");
	341	return 1;
	342	}
	343
	344	prot = 0;
	345	for (sect=s_first; sect<=s_last; ++sect)
	346	if (info->protect[sect])
	347	prot++;
	348
	349	if (prot)
	350	printf ("- Warning: %d protected sectors will not be erased!\n", prot);
	351	else
	352	printf ("\n");
	353
	354	l_sect = -1;
	355
	356	/* Disable interrupts which might cause a timeout here */
	357	flag = disable_interrupts();
	358
	359	/* Start erase on unprotected sectors */
	360	for (sect = s_first; sect<=s_last; sect++) {
	361	if (info->protect[sect] == 0) { /* not protected */
6d0f6bcf	362	addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[sect]);
ba94a1bb	363	if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) {
6d0f6bcf JCPV	364	addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00AA00AA;
	365	addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00550055;
	366	addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080;
	367	addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00AA00AA;
	368	addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00550055;
	369	addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00300030; /* sector erase */
ba94a1bb WD	370
	371	/* re-enable interrupts if necessary */
	372	if (flag) {
	373	enable_interrupts();
	374	flag = 0;
	375	}
	376
	377	/* data polling for D7 */
	378	start = get_timer (0);
6d0f6bcf JCPV	379	while ((addr2[0] & (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080) !=
	380	(CONFIG_SYS_FLASH_WORD_SIZE)0x00800080) {
	381	if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT)
ba94a1bb WD	382	return (1);
	383	}
	384	} else {
	385	if (sect == s_first) {
6d0f6bcf JCPV	386	addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00AA00AA;
	387	addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00550055;
	388	addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080;
	389	addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00AA00AA;
	390	addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00550055;
ba94a1bb	391	}
6d0f6bcf	392	addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00300030; /* sector erase */
ba94a1bb WD	393	}
	394	l_sect = sect;
	395	}
	396	}
	397
	398	/* re-enable interrupts if necessary */
	399	if (flag)
	400	enable_interrupts();
	401
	402	/* wait at least 80us - let's wait 1 ms */
	403	udelay (1000);
	404
	405	/*
	406	* We wait for the last triggered sector
	407	*/
	408	if (l_sect < 0)
	409	goto DONE;
	410
	411	start = get_timer (0);
	412	last = start;
6d0f6bcf JCPV	413	addr = (CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[l_sect]);
	414	while ((addr[0] & (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080) != (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080) {
	415	if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
ba94a1bb WD	416	printf ("Timeout\n");
	417	return 1;
	418	}
	419	/* show that we're waiting */
	420	if ((now - last) > 1000) { /* every second */
	421	putc ('.');
	422	last = now;
	423	}
	424	}
	425
	426	DONE:
	427	/* reset to read mode */
6d0f6bcf JCPV	428	addr = (CONFIG_SYS_FLASH_WORD_SIZE *)info->start[0];
6d0f6bcf JCPV	429	addr[0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00F000F0; /* reset bank */
ba94a1bb WD	430
	431	printf (" done\n");
	432	return 0;
	433	}
	434
	435	/*
	436	* Copy memory to flash, returns:
	437	* 0 - OK
	438	* 1 - write timeout
	439	* 2 - Flash not erased
	440	*/
	441	int write_buff(flash_info_t info, uchar src, ulong addr, ulong cnt)
	442	{
	443	ulong cp, wp, data;
	444	int i, l, rc;
	445
	446	wp = (addr & ~3); /* get lower word aligned address */
	447
	448	/*
	449	* handle unaligned start bytes
	450	*/
	451	if ((l = addr - wp) != 0) {
	452	data = 0;
	453	for (i=0, cp=wp; i<l; ++i, ++cp) {
	454	data = (data << 8) \| ((uchar )cp);
	455	}
	456	for (; i<4 && cnt>0; ++i) {
	457	data = (data << 8) \| *src++;
	458	--cnt;
	459	++cp;
	460	}
	461	for (; cnt==0 && i<4; ++i, ++cp) {
	462	data = (data << 8) \| ((uchar )cp);
	463	}
	464
	465	if ((rc = write_word(info, wp, data)) != 0) {
	466	return (rc);
	467	}
	468	wp += 4;
	469	}
	470
	471	/*
	472	* handle word aligned part
	473	*/
	474	while (cnt >= 4) {
	475	data = 0;
	476	for (i=0; i<4; ++i)
	477	data = (data << 8) \| *src++;
	478	if ((rc = write_word(info, wp, data)) != 0)
	479	return (rc);
	480	wp += 4;
	481	cnt -= 4;
	482	}
	483
	484	if (cnt == 0)
	485	return (0);
	486
	487	/*
	488	* handle unaligned tail bytes
	489	*/
	490	data = 0;
	491	for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) {
	492	data = (data << 8) \| *src++;
	493	--cnt;
494	}
495	for (; i<4; ++i, ++cp)
496	data = (data << 8) \| ((uchar )cp);
497
498	return (write_word(info, wp, data));
499	}
500
501	/*
502	* Write a word to Flash, returns:
503	* 0 - OK
504	* 1 - write timeout
505	* 2 - Flash not erased
506	*/
507	static int write_word(flash_info_t *info, ulong dest, ulong data)
508	{
6d0f6bcf JCPV	509	volatile CONFIG_SYS_FLASH_WORD_SIZE addr2 = (CONFIG_SYS_FLASH_WORD_SIZE )(info->start[0]);
	510	volatile CONFIG_SYS_FLASH_WORD_SIZE dest2 = (CONFIG_SYS_FLASH_WORD_SIZE )dest;
	511	volatile CONFIG_SYS_FLASH_WORD_SIZE data2 = (CONFIG_SYS_FLASH_WORD_SIZE )&data;
ba94a1bb WD	512	ulong start;
	513	int flag;
	514	int i;
	515
	516	/* Check if Flash is (sufficiently) erased */
	517	if ((((vu_long )dest) & data) != data)
	518	return (2);
	519
	520	/* Disable interrupts which might cause a timeout here */
	521	flag = disable_interrupts();
	522
6d0f6bcf JCPV	523	for (i=0; i<4/sizeof(CONFIG_SYS_FLASH_WORD_SIZE); i++) {
	524	addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00AA00AA;
	525	addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00550055;
	526	addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00A000A0;
ba94a1bb WD	527
	528	dest2[i] = data2[i];
	529
	530	/* re-enable interrupts if necessary */
	531	if (flag)
	532	enable_interrupts();
	533
	534	/* data polling for D7 */
	535	start = get_timer (0);
6d0f6bcf JCPV	536	while ((dest2[i] & (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080) !=
	537	(data2[i] & (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080)) {
	538	if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT)
ba94a1bb WD	539	return (1);
	540	}
	541	}
	542
	543	return (0);
	544	}