/* * (C) Copyright 2004-2005 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * * (C) Copyright 2002 Jun Gu <jung@artesyncp.com> * Add support for Am29F016D and dynamic switch setting. * * 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 *//* * Modified 4/5/2001 * Wait for completion of each sector erase command issued * 4/5/2001 * Chris Hallinan - DS4.COM, Inc. - clh@net1plus.com */#include <common.h>#include <ppc4xx.h>#include <asm/processor.h>flash_info_t flash_info[CFG_MAX_FLASH_BANKS];	/* info for FLASH chips *//*----------------------------------------------------------------------- * Functions */static int write_word(flash_info_t * info, ulong dest, ulong data);#ifdef CFG_FLASH_2ND_16BIT_DEVstatic int write_word_1(flash_info_t * info, ulong dest, ulong data);static int write_word_2(flash_info_t * info, ulong dest, ulong data);static int flash_erase_1(flash_info_t * info, int s_first, int s_last);static int flash_erase_2(flash_info_t * info, int s_first, int s_last);static ulong flash_get_size_1(vu_long * addr, flash_info_t * info);static ulong flash_get_size_2(vu_long * addr, flash_info_t * info);#endifvoid 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_STM:		printf("STM ");		break;	case FLASH_MAN_FUJ:		printf("FUJITSU ");		break;	case FLASH_MAN_SST:		printf("SST ");		break;	case FLASH_MAN_MX:		printf ("MACRONIX ");		break;	default:		printf("Unknown Vendor ");		break;	}	switch (info->flash_id & FLASH_TYPEMASK) {	case FLASH_AM040:		printf("AM29F040 (512 Kbit, uniform sector size)\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_AMD016:		printf("AM29F016D (16 Mbit, uniform sector size)\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;	case FLASH_AM033C:		printf("AM29LV033C (32 Mbit, top boot sector)\n");		break;	case FLASH_SST800A:		printf("SST39LF/VF800 (8 Mbit, uniform sector size)\n");		break;	case FLASH_SST160A:		printf("SST39LF/VF160 (16 Mbit, uniform sector size)\n");		break;	case FLASH_STMW320DT:		printf ("M29W320DT (32 M, top sector)\n");		break;	case FLASH_MXLV320T:		printf ("MXLV320T (32 Mbit, top sector)\n");		break;	default:		printf("Unknown Chip Type\n");		break;	}	printf("  Size: %ld KB in %d Sectors\n",	       info->size >> 10, info->sector_count);	printf("  Sector Start Addresses:");	for (i = 0; i < info->sector_count; ++i) {		/*		 * 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   ");		printf(" %08lX%s%s",		       info->start[i],		       erased ? " E" : "  ", info->protect[i] ? "RO " : "   ");	}	printf("\n");	return;}/* * The following code cannot be run from FLASH! */#ifdef CFG_FLASH_2ND_16BIT_DEVstatic ulong flash_get_size(vu_long * addr, flash_info_t * info){	/* bit 0 used for big flash marking */	if ((ulong)addr & 0x1) {		return flash_get_size_2((vu_long *)((ulong)addr & 0xfffffffe), info);	} else {		return flash_get_size_1(addr, info);	}}static ulong flash_get_size_1(vu_long * addr, flash_info_t * info)#elsestatic ulong flash_get_size(vu_long * addr, flash_info_t * info)#endif{	short i;	CFG_FLASH_WORD_SIZE value;	ulong base = (ulong) addr;	volatile CFG_FLASH_WORD_SIZE *addr2 = (CFG_FLASH_WORD_SIZE *) addr;	DEBUGF("FLASH ADDR: %08x\n", (unsigned)addr);	/* Write auto select command: read Manufacturer ID */	addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00AA00AA;	addr2[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x00550055;	addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00900090;	udelay(1000);	value = addr2[0];	DEBUGF("FLASH MANUFACT: %x\n", value);	switch (value) {	case (CFG_FLASH_WORD_SIZE) AMD_MANUFACT:		info->flash_id = FLASH_MAN_AMD;		break;	case (CFG_FLASH_WORD_SIZE) FUJ_MANUFACT:		info->flash_id = FLASH_MAN_FUJ;		break;	case (CFG_FLASH_WORD_SIZE) SST_MANUFACT:		info->flash_id = FLASH_MAN_SST;		break;	case (CFG_FLASH_WORD_SIZE) STM_MANUFACT:		info->flash_id = FLASH_MAN_STM;		break;	default:		info->flash_id = FLASH_UNKNOWN;		info->sector_count = 0;		info->size = 0;		return (0);	/* no or unknown flash  */	}	value = addr2[1];	/* device ID */	DEBUGF("\nFLASH DEVICEID: %x\n", value);	switch (value) {	case (CFG_FLASH_WORD_SIZE) AMD_ID_LV040B:		info->flash_id += FLASH_AM040;		info->sector_count = 8;		info->size = 0x0080000;		/* => 512 KiB */		break;	case (CFG_FLASH_WORD_SIZE) AMD_ID_F040B:		info->flash_id += FLASH_AM040;		info->sector_count = 8;		info->size = 0x0080000;		/* => 512 KiB */		break;	case (CFG_FLASH_WORD_SIZE) STM_ID_M29W040B:		info->flash_id += FLASH_AM040;		info->sector_count = 8;		info->size = 0x0080000;		/* => 512 KiB */		break;	case (CFG_FLASH_WORD_SIZE) AMD_ID_F016D:		info->flash_id += FLASH_AMD016;		info->sector_count = 32;		info->size = 0x00200000;	/* => 2 MiB */		break;	case (CFG_FLASH_WORD_SIZE) AMD_ID_LV033C:		info->flash_id += FLASH_AMDLV033C;		info->sector_count = 64;		info->size = 0x00400000;	/* => 4 MiB */		break;	case (CFG_FLASH_WORD_SIZE) AMD_ID_LV400T:		info->flash_id += FLASH_AM400T;		info->sector_count = 11;		info->size = 0x00080000;	/* => 512 KiB */		break;	case (CFG_FLASH_WORD_SIZE) AMD_ID_LV400B:		info->flash_id += FLASH_AM400B;		info->sector_count = 11;		info->size = 0x00080000;	/* => 512 KiB */		break;	case (CFG_FLASH_WORD_SIZE) AMD_ID_LV800T:		info->flash_id += FLASH_AM800T;		info->sector_count = 19;		info->size = 0x00100000;	/* => 1 MiB */		break;	case (CFG_FLASH_WORD_SIZE) AMD_ID_LV800B:		info->flash_id += FLASH_AM800B;		info->sector_count = 19;		info->size = 0x00100000;	/* => 1 MiB */		break;	case (CFG_FLASH_WORD_SIZE) AMD_ID_LV160T:		info->flash_id += FLASH_AM160T;		info->sector_count = 35;		info->size = 0x00200000;	/* => 2 MiB */		break;	case (CFG_FLASH_WORD_SIZE) AMD_ID_LV160B:		info->flash_id += FLASH_AM160B;		info->sector_count = 35;		info->size = 0x00200000;	/* => 2 MiB */		break;	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) ||	    ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) ||	    ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMD016)) {		for (i = 0; i < info->sector_count; i++)			info->start[i] = base + (i * 0x00010000);	} 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 CFG_FLASH_WORD_SIZE *)(info->start[i]);		/* For AMD29033C flash we need to resend the command of *		 * reading flash protection for upper 8 Mb of flash     */		if (i == 32) {			addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0xAAAAAAAA;			addr2[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x55555555;			addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x90909090;		}		if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST)			info->protect[i] = 0;		else			info->protect[i] = addr2[2] & 1;	}	/* issue bank reset to return to read mode */	addr2[0] = (CFG_FLASH_WORD_SIZE) 0x00F000F0;	return (info->size);}static int wait_for_DQ7_1(flash_info_t * info, int sect){	ulong start, now, last;	volatile CFG_FLASH_WORD_SIZE *addr =	    (CFG_FLASH_WORD_SIZE *) (info->start[sect]);	start = get_timer(0);	last = start;	while ((addr[0] & (CFG_FLASH_WORD_SIZE) 0x00800080) !=	       (CFG_FLASH_WORD_SIZE) 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;		}	}	return 0;}#ifdef CFG_FLASH_2ND_16BIT_DEVint flash_erase(flash_info_t * info, int s_first, int s_last){	if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320B) ||	    ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320T) ||	    ((info->flash_id & FLASH_TYPEMASK) == FLASH_MXLV320T) ||	    ((info->flash_id & FLASH_TYPEMASK) == FLASH_STMW320DT)) {		return flash_erase_2(info, s_first, s_last);	} else {		return flash_erase_1(info, s_first, s_last);	}}static int flash_erase_1(flash_info_t * info, int s_first, int s_last)#elseint flash_erase(flash_info_t * info, int s_first, int s_last)#endif{	volatile CFG_FLASH_WORD_SIZE *addr = (CFG_FLASH_WORD_SIZE *) (info->start[0]);	volatile CFG_FLASH_WORD_SIZE *addr2;	int flag, prot, sect, l_sect;	int i;	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 = (CFG_FLASH_WORD_SIZE *) (info->start[sect]);			if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) {				addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00AA00AA;				addr[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x00550055;				addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00800080;				addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00AA00AA;				addr[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x00550055;				addr2[0] = (CFG_FLASH_WORD_SIZE) 0x00500050;	/* block erase */				for (i = 0; i < 50; i++)					udelay(1000);	/* wait 1 ms */			} else {				addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00AA00AA;				addr[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x00550055;				addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00800080;				addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00AA00AA;				addr[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x00550055;				addr2[0] = (CFG_FLASH_WORD_SIZE) 0x00300030;	/* sector erase */			}			l_sect = sect;			/*			 * Wait for each sector to complete, it's more			 * reliable.  According to AMD Spec, you must			 * issue all erase commands within a specified			 * timeout.  This has been seen to fail, especially			 * if printf()s are included (for debug)!!			 */			wait_for_DQ7_1(info, sect);		}	}	/* re-enable interrupts if necessary */	if (flag)		enable_interrupts();	/* wait at least 80us - let's wait 1 ms */	udelay(1000);