/* * (C) Copyright 2003 * MuLogic B.V. * * (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 <ppc4xx.h>#include <asm/u-boot.h>#include <asm/processor.h>flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */#define FLASH_WORD_SIZE unsigned long#define FLASH_ID_MASK 0xFFFFFFFF/*----------------------------------------------------------------------- * Functions *//* stolen from esteem192e/flash.c */ulong flash_get_size (volatile FLASH_WORD_SIZE *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){	unsigned long size_b0, size_b1;	int i;	uint pbcr;	unsigned long base_b0, base_b1;	volatile FLASH_WORD_SIZE* flash_base;	/* 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 */	/* Test for 8M Flash first */	debug ("\n## Get flash bank 1 size @ 0x%08x\n",FLASH_BASE0_8M_PRELIM);	flash_base = (volatile FLASH_WORD_SIZE*)(FLASH_BASE0_8M_PRELIM);	size_b0 = flash_get_size(flash_base, &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);		return 0;	}	if (size_b0 < 8*1024*1024) {		/* Not quite 8M, try 4M Flash base address */		debug ("\n## Get flash bank 1 size @ 0x%08x\n",FLASH_BASE0_4M_PRELIM);		flash_base = (volatile FLASH_WORD_SIZE*)(FLASH_BASE0_4M_PRELIM);		size_b0 = flash_get_size(flash_base, &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);		return 0;	}	/* Only one bank */	if (CFG_MAX_FLASH_BANKS == 1) {		/* Setup offsets */		flash_get_offsets ((ulong)flash_base, &flash_info[0]);		/* Monitor protection ON by default */		(void)flash_protect(FLAG_PROTECT_SET, CFG_MONITOR_BASE,			CFG_MONITOR_BASE+CFG_MONITOR_LEN-1, &flash_info[0]);		size_b1 = 0 ;		flash_info[0].size = size_b0;		return(size_b0);	}	/* We have 2 banks */	size_b1 = flash_get_size(flash_base, &flash_info[1]);	/* Re-do sizing to get full correct info */	if (size_b1) {		mtdcr(ebccfga, pb0cr);		pbcr = mfdcr(ebccfgd);		mtdcr(ebccfga, pb0cr);		base_b1 = -size_b1;		pbcr = (pbcr & 0x0001ffff) | base_b1 | (((size_b1/1024/1024)-1)<<17);		mtdcr(ebccfgd, pbcr);	}	if (size_b0) {		mtdcr(ebccfga, pb1cr);		pbcr = mfdcr(ebccfgd);		mtdcr(ebccfga, pb1cr);		base_b0 = base_b1 - size_b0;		pbcr = (pbcr & 0x0001ffff) | base_b0 | (((size_b0/1024/1024)-1)<<17);		mtdcr(ebccfgd, pbcr);	}	size_b0 = flash_get_size((volatile FLASH_WORD_SIZE *)base_b0, &flash_info[0]);	flash_get_offsets (base_b0, &flash_info[0]);	/* monitor protection ON by default */	(void)flash_protect(FLAG_PROTECT_SET, CFG_MONITOR_BASE,		CFG_MONITOR_BASE+CFG_MONITOR_LEN-1, &flash_info[0]);	if (size_b1) {		/* Re-do sizing to get full correct info */		size_b1 = flash_get_size((volatile FLASH_WORD_SIZE *)base_b1, &flash_info[1]);		flash_get_offsets (base_b1, &flash_info[1]);		/* monitor protection ON by default */		(void)flash_protect(FLAG_PROTECT_SET, base_b1+size_b1-CFG_MONITOR_LEN,			base_b1+size_b1-1, &flash_info[1]);		/* monitor protection OFF by default (one is enough) */		(void)flash_protect(FLAG_PROTECT_CLEAR, base_b0+size_b0-CFG_MONITOR_LEN,			base_b0+size_b0-1, &flash_info[0]);	} else {		flash_info[1].flash_id = FLASH_UNKNOWN;		flash_info[1].sector_count = -1;	}	flash_info[0].size = size_b0;	flash_info[1].size = size_b1;	return (size_b0 + size_b1);}/*----------------------------------------------------------------------- This code is specific to the AM29DL163/AM29DL232 for the QS850/QS823. */static void flash_get_offsets (ulong base, flash_info_t *info){	int i;	long large_sect_size;	long small_sect_size;	/* set up sector start adress table */	large_sect_size = info->size / (info->sector_count - 8 + 1);	small_sect_size = large_sect_size / 8;	if (info->flash_id & FLASH_BTYPE) {		/* set sector offsets for bottom boot block type */		for (i = 0; i < 7; i++) {			info->start[i] = base;			base += small_sect_size;		}		for (; i < info->sector_count; i++) {			info->start[i] = base;			base += large_sect_size;		}	}	else	{		/* set sector offsets for top boot block type */		for (i = 0; i < (info->sector_count - 8); i++) {			info->start[i] = base;			base += large_sect_size;		}		for (; i < info->sector_count; i++) {			info->start[i] = base;			base += small_sect_size;		}	}}/*----------------------------------------------------------------------- */void flash_print_info  (flash_info_t *info){	int i;	uchar *boottype;	uchar botboot[]=", bottom boot sect)\n";	uchar topboot[]=", top boot sector)\n";	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 ("STM ");			break;		case FLASH_MAN_INTEL:			printf ("INTEL ");			break;		default:			printf ("Unknown Vendor ");			break;	}	if (info->flash_id & 0x0001 ) {		boottype = botboot;	} else {		boottype = topboot;	}	switch (info->flash_id & FLASH_TYPEMASK) {		case FLASH_AM160B:			printf ("AM29LV160B (16 Mbit%s",boottype);			break;		case FLASH_AM160T:			printf ("AM29LV160T (16 Mbit%s",boottype);			break;		case FLASH_AMDL163T:			printf ("AM29DL163T (16 Mbit%s",boottype);			break;		case FLASH_AMDL163B:			printf ("AM29DL163B (16 Mbit%s",boottype);			break;		case FLASH_AM320B:			printf ("AM29LV320B (32 Mbit%s",boottype);			break;		case FLASH_AM320T:			printf ("AM29LV320T (32 Mbit%s",boottype);			break;		case FLASH_AMDL323T:			printf ("AM29DL323T (32 Mbit%s",boottype);			break;		case FLASH_AMDL323B:			printf ("AM29DL323B (32 Mbit%s",boottype);			break;		case FLASH_AMDL322T:			printf ("AM29DL322T (32 Mbit%s",boottype);			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! */ulong flash_get_size (volatile FLASH_WORD_SIZE *addr, flash_info_t *info){	short i;	ulong base = (ulong)addr;	FLASH_WORD_SIZE value;	/* Write auto select command: read Manufacturer ID */	/*	 * Note: if it is an AMD flash and the word at addr[0000]	 * is 0x00890089 this routine will think it is an Intel	 * flash device and may(most likely) cause trouble.	 */	addr[0x0000] = 0x00900090;	if(addr[0x0000] != 0x00890089){		addr[0x0555] = 0x00AA00AA;		addr[0x02AA] = 0x00550055;		addr[0x0555] = 0x00900090;	}	value = addr[0];	switch (value) {		case (AMD_MANUFACT & FLASH_ID_MASK):			info->flash_id = FLASH_MAN_AMD;			break;		case (FUJ_MANUFACT & FLASH_ID_MASK):			info->flash_id = FLASH_MAN_FUJ;			break;		case (STM_MANUFACT & FLASH_ID_MASK):			info->flash_id = FLASH_MAN_STM;			break;		case (SST_MANUFACT & FLASH_ID_MASK):			info->flash_id = FLASH_MAN_SST;			break;		case (INTEL_MANUFACT & FLASH_ID_MASK):			info->flash_id = FLASH_MAN_INTEL;			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_LV160T & FLASH_ID_MASK):			info->flash_id += FLASH_AM160T;			info->sector_count = 35;			info->size = 0x00400000;			break; /* => 4 MB */		case (AMD_ID_LV160B & FLASH_ID_MASK):			info->flash_id += FLASH_AM160B;			info->sector_count = 35;			info->size = 0x00400000;			break; /* => 4 MB */		case (AMD_ID_DL163T & FLASH_ID_MASK):			info->flash_id += FLASH_AMDL163T;			info->sector_count = 39;			info->size = 0x00400000;			break; /* => 4 MB */		case (AMD_ID_DL163B & FLASH_ID_MASK):			info->flash_id += FLASH_AMDL163B;			info->sector_count = 39;			info->size = 0x00400000;			break; /* => 4 MB */		case (AMD_ID_DL323T & FLASH_ID_MASK):			info->flash_id += FLASH_AMDL323T;			info->sector_count = 71;			info->size = 0x00800000;			break; /* => 8 MB */		case (AMD_ID_DL323B & FLASH_ID_MASK):			info->flash_id += FLASH_AMDL323B;			info->sector_count = 71;			info->size = 0x00800000;			break; /* => 8 MB */		case (AMD_ID_DL322T & FLASH_ID_MASK):			info->flash_id += FLASH_AMDL322T;			info->sector_count = 71;			info->size = 0x00800000;			break; /* => 8 MB */		default:			/* FIXME*/			info->flash_id = FLASH_UNKNOWN;			return (0); /* => no or unknown flash */	}	flash_get_offsets(base, info);	/* 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 FLASH_WORD_SIZE *)(info->start[i]);		info->protect[i] = addr[2] & 1;	}	/*	 * Prevent writes to uninitialized FLASH.	 */	if (info->flash_id != FLASH_UNKNOWN) {		addr = (volatile FLASH_WORD_SIZE *)info->start[0];		*addr = (0x00FF00FF & FLASH_ID_MASK);	/* reset bank */	}	return (info->size);}/*----------------------------------------------------------------------- */int flash_erase (flash_info_t *info, int s_first, int s_last){	volatile FLASH_WORD_SIZE *addr=(volatile FLASH_WORD_SIZE*)(info->start[0]);	int flag, prot, sect, l_sect;	ulong start, now, last;	int rcode = 0;	if ((s_first < 0) || (s_first > s_last)) {		if (info->flash_id == FLASH_UNKNOWN) {			printf ("- missing\n");		} else {			printf ("- no sectors to erase\n");		}		return 1;	}	if ((info->flash_id == FLASH_UNKNOWN) ||		(info->flash_id > FLASH_AMD_COMP) ) {		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();	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 = (volatile FLASH_WORD_SIZE *)(info->start[sect]);			addr[0] = (0x00300030 & FLASH_ID_MASK);			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 = (volatile FLASH_WORD_SIZE*)(info->start[l_sect]);	while ((addr[0] & (0x00800080&FLASH_ID_MASK)) !=			(0x00800080&FLASH_ID_MASK)  )	{		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 */			serial_putc ('.');			last = now;		}	}DONE:	/* reset to read mode */	addr = (volatile FLASH_WORD_SIZE *)info->start[0];	addr[0] = (0x00F000F0 & FLASH_ID_MASK); /* reset bank */	printf (" done\n");	return rcode;}/*----------------------------------------------------------------------- * 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 l;	int i, 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();	/* AMD stuff */	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);}