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| author | Marek Vasut <marek.vasut@gmail.com> | 2011-11-21 23:31:25 +0100 | 
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2011-12-06 23:59:31 +0100 | 
| commit | d299173139f030386f9d55117775cca050936706 (patch) | |
| tree | 8f9123b3d15290a76942d4e13ba4c7780322e2a9 /board/pleb2/flash.c | |
| parent | 00c4acaa97b3446eb771ce5539f4a188b25618ff (diff) | |
| download | olio-uboot-2014.01-d299173139f030386f9d55117775cca050936706.tar.xz olio-uboot-2014.01-d299173139f030386f9d55117775cca050936706.zip | |
PXA: Drop PLEB2 board
The board is unmaintained and maintainer doesn't respond.
Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Anatolij Gustschin <agust@denx.de>
Diffstat (limited to 'board/pleb2/flash.c')
| -rw-r--r-- | board/pleb2/flash.c | 814 | 
1 files changed, 0 insertions, 814 deletions
| diff --git a/board/pleb2/flash.c b/board/pleb2/flash.c deleted file mode 100644 index 2406c5f4c..000000000 --- a/board/pleb2/flash.c +++ /dev/null @@ -1,814 +0,0 @@ -/* - * (C) Copyright 2000 - * 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> -/* environment.h defines the various CONFIG_ENV_... values in terms - * of whichever ones are given in the configuration file. - */ -#include <environment.h> - -flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];	/* info for FLASH chips        */ - -/* NOTE - CONFIG_FLASH_16BIT means the CPU interface is 16-bit, it - *        has nothing to do with the flash chip being 8-bit or 16-bit. - */ -#ifdef CONFIG_FLASH_16BIT -typedef unsigned short FLASH_PORT_WIDTH; -typedef volatile unsigned short FLASH_PORT_WIDTHV; - -#define	FLASH_ID_MASK	0xFFFF -#else -typedef unsigned long FLASH_PORT_WIDTH; -typedef volatile unsigned long FLASH_PORT_WIDTHV; - -#define	FLASH_ID_MASK	0xFFFFFFFF -#endif - -#define FPW	FLASH_PORT_WIDTH -#define FPWV	FLASH_PORT_WIDTHV - -#define ORMASK(size) ((-size) & OR_AM_MSK) - -/*----------------------------------------------------------------------- - * Functions - */ -static ulong flash_get_size (FPWV * addr, flash_info_t * info); -static void flash_reset (flash_info_t * info); -static int write_word_intel (flash_info_t * info, FPWV * dest, FPW data); -static int write_word_amd (flash_info_t * info, FPWV * dest, FPW data); -static void flash_get_offsets (ulong base, flash_info_t * info); - -#ifdef CONFIG_SYS_FLASH_PROTECTION -static void flash_sync_real_protect (flash_info_t * info); -#endif - -/*----------------------------------------------------------------------- - * flash_init() - * - * sets up flash_info and returns size of FLASH (bytes) - */ -unsigned long flash_init (void) -{ -	unsigned long size_b; -	int i; - -	/* Init: no FLASHes known */ -	for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) { -		flash_info[i].flash_id = FLASH_UNKNOWN; -	} - -	size_b = flash_get_size ((FPW *) CONFIG_SYS_FLASH_BASE, &flash_info[0]); - -	flash_info[0].size = size_b; - -	if (flash_info[0].flash_id == FLASH_UNKNOWN) { -		printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx\n", -			size_b); -	} - -	/* Do this again (was done already in flast_get_size), just -	 * in case we move it when remap the FLASH. -	 */ -	flash_get_offsets (CONFIG_SYS_FLASH_BASE, &flash_info[0]); - -#ifdef CONFIG_SYS_FLASH_PROTECTION -	/* read the hardware protection status (if any) into the -	 * protection array in flash_info. -	 */ -	flash_sync_real_protect (&flash_info[0]); -#endif - -#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_ADDR -	flash_protect (FLAG_PROTECT_SET, -		       CONFIG_ENV_ADDR, -		       CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1, &flash_info[0]); -#endif - -#ifdef CONFIG_ENV_ADDR_REDUND -	flash_protect (FLAG_PROTECT_SET, -		       CONFIG_ENV_ADDR_REDUND, -		       CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1, -		       &flash_info[0]); -#endif - -	return (size_b); -} - -/*----------------------------------------------------------------------- - */ -static void flash_reset (flash_info_t * info) -{ -	FPWV *base = (FPWV *) (info->start[0]); - -	/* Put FLASH back in read mode */ -	if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) -		*base = (FPW) 0x00FF00FF;	/* Intel Read Mode */ -	else if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_AMD) -		*base = (FPW) 0x00F000F0;	/* AMD Read Mode */ -} - -/*----------------------------------------------------------------------- - */ -static void flash_get_offsets (ulong base, flash_info_t * info) -{ -	int i; - -	/* set up sector start address table */ -	if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL -	    && (info->flash_id & FLASH_BTYPE)) { -		int bootsect_size;	/* number of bytes/boot sector  */ -		int sect_size;	/* number of bytes/regular sector */ - -		bootsect_size = 0x00002000 * (sizeof (FPW) / 2); -		sect_size = 0x00010000 * (sizeof (FPW) / 2); - -		/* set sector offsets for bottom boot block type        */ -		for (i = 0; i < 8; ++i) { -			info->start[i] = base + (i * bootsect_size); -		} -		for (i = 8; i < info->sector_count; i++) { -			info->start[i] = base + ((i - 7) * sect_size); -		} -	} else if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_AMD -		   && (info->flash_id & FLASH_TYPEMASK) == FLASH_AM640U) { - -		int sect_size;	/* number of bytes/sector */ - -		sect_size = 0x00010000 * (sizeof (FPW) / 2); - -		/* set up sector start address table (uniform sector type) */ -		for (i = 0; i < info->sector_count; i++) -			info->start[i] = base + (i * sect_size); -	} else if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_AMD -		   && (info->flash_id & FLASH_TYPEMASK) == FLASH_AM800T) { - -		int sect_size;	/* number of bytes/sector */ - -		sect_size = 0x00010000 * (sizeof (FPW) / 2); - -		/* set up sector start address table (top boot sector type) */ -		for (i = 0; i < info->sector_count - 3; i++) -			info->start[i] = base + (i * sect_size); -		i = info->sector_count - 1; -		info->start[i--] = -			base + (info->size - 0x00004000) * (sizeof (FPW) / 2); -		info->start[i--] = -			base + (info->size - 0x00006000) * (sizeof (FPW) / 2); -		info->start[i--] = -			base + (info->size - 0x00008000) * (sizeof (FPW) / 2); -	} -} - -/*----------------------------------------------------------------------- - */ - -void flash_print_info (flash_info_t * info) -{ -	int i; -	uchar *boottype; -	uchar *bootletter; -	char *fmt; -	uchar botbootletter[] = "B"; -	uchar topbootletter[] = "T"; -	uchar botboottype[] = "bottom boot sector"; -	uchar topboottype[] = "top boot sector"; - -	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_BM: -		printf ("BRIGHT MICRO "); -		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; -	} - -	/* check for top or bottom boot, if it applies */ -	if (info->flash_id & FLASH_BTYPE) { -		boottype = botboottype; -		bootletter = botbootletter; -	} else { -		boottype = topboottype; -		bootletter = topbootletter; -	} - -	switch (info->flash_id & FLASH_TYPEMASK) { -	case FLASH_AM800T: -		fmt = "29LV800B%s (8 Mbit, %s)\n"; -		break; -	case FLASH_AM640U: -		fmt = "29LV641D (64 Mbit, uniform sectors)\n"; -		break; -	case FLASH_28F800C3B: -	case FLASH_28F800C3T: -		fmt = "28F800C3%s (8 Mbit, %s)\n"; -		break; -	case FLASH_INTEL800B: -	case FLASH_INTEL800T: -		fmt = "28F800B3%s (8 Mbit, %s)\n"; -		break; -	case FLASH_28F160C3B: -	case FLASH_28F160C3T: -		fmt = "28F160C3%s (16 Mbit, %s)\n"; -		break; -	case FLASH_INTEL160B: -	case FLASH_INTEL160T: -		fmt = "28F160B3%s (16 Mbit, %s)\n"; -		break; -	case FLASH_28F320C3B: -	case FLASH_28F320C3T: -		fmt = "28F320C3%s (32 Mbit, %s)\n"; -		break; -	case FLASH_INTEL320B: -	case FLASH_INTEL320T: -		fmt = "28F320B3%s (32 Mbit, %s)\n"; -		break; -	case FLASH_28F640C3B: -	case FLASH_28F640C3T: -		fmt = "28F640C3%s (64 Mbit, %s)\n"; -		break; -	case FLASH_INTEL640B: -	case FLASH_INTEL640T: -		fmt = "28F640B3%s (64 Mbit, %s)\n"; -		break; -	default: -		fmt = "Unknown Chip Type\n"; -		break; -	} - -	printf (fmt, bootletter, boottype); - -	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! - */ - -ulong flash_get_size (FPWV * addr, flash_info_t * info) -{ -	/* Write auto select command: read Manufacturer ID */ - -	/* Write auto select command sequence and test FLASH answer */ -	addr[0x0555] = (FPW) 0x00AA00AA;	/* for AMD, Intel ignores this */ -	addr[0x02AA] = (FPW) 0x00550055;	/* for AMD, Intel ignores this */ -	addr[0x0555] = (FPW) 0x00900090;	/* selects Intel or AMD */ - -	/* The manufacturer codes are only 1 byte, so just use 1 byte. -	 * This works for any bus width and any FLASH device width. -	 */ -	switch (addr[0] & 0xff) { - -	case (uchar) AMD_MANUFACT: -		info->flash_id = FLASH_MAN_AMD; -		break; - -	case (uchar) INTEL_MANUFACT: -		info->flash_id = FLASH_MAN_INTEL; -		break; - -	default: -		info->flash_id = FLASH_UNKNOWN; -		info->sector_count = 0; -		info->size = 0; -		break; -	} - -	/* Check 16 bits or 32 bits of ID so work on 32 or 16 bit bus. */ -	if (info->flash_id != FLASH_UNKNOWN) -		switch (addr[1]) { - -		case (FPW) AMD_ID_LV800T: -			info->flash_id += FLASH_AM800T; -			info->sector_count = 19; -			info->size = 0x00100000 * (sizeof (FPW) / 2); -			break;	/* => 1 or 2 MiB        */ - -		case (FPW) AMD_ID_LV640U:	/* 29LV640 and 29LV641 have same ID */ -			info->flash_id += FLASH_AM640U; -			info->sector_count = 128; -			info->size = 0x00800000 * (sizeof (FPW) / 2); -			break;	/* => 8 or 16 MB        */ - -		case (FPW) INTEL_ID_28F800C3B: -			info->flash_id += FLASH_28F800C3B; -			info->sector_count = 23; -			info->size = 0x00100000 * (sizeof (FPW) / 2); -			break;	/* => 1 or 2 MB         */ - -		case (FPW) INTEL_ID_28F800B3B: -			info->flash_id += FLASH_INTEL800B; -			info->sector_count = 23; -			info->size = 0x00100000 * (sizeof (FPW) / 2); -			break;	/* => 1 or 2 MB         */ - -		case (FPW) INTEL_ID_28F160C3B: -			info->flash_id += FLASH_28F160C3B; -			info->sector_count = 39; -			info->size = 0x00200000 * (sizeof (FPW) / 2); -			break;	/* => 2 or 4 MB         */ - -		case (FPW) INTEL_ID_28F160B3B: -			info->flash_id += FLASH_INTEL160B; -			info->sector_count = 39; -			info->size = 0x00200000 * (sizeof (FPW) / 2); -			break;	/* => 2 or 4 MB         */ - -		case (FPW) INTEL_ID_28F320C3B: -			info->flash_id += FLASH_28F320C3B; -			info->sector_count = 71; -			info->size = 0x00400000 * (sizeof (FPW) / 2); -			break;	/* => 4 or 8 MB         */ - -		case (FPW) INTEL_ID_28F320B3B: -			info->flash_id += FLASH_INTEL320B; -			info->sector_count = 71; -			info->size = 0x00400000 * (sizeof (FPW) / 2); -			break;	/* => 4 or 8 MB         */ - -		case (FPW) INTEL_ID_28F640C3B: -			info->flash_id += FLASH_28F640C3B; -			info->sector_count = 135; -			info->size = 0x00800000 * (sizeof (FPW) / 2); -			break;	/* => 8 or 16 MB        */ - -		case (FPW) INTEL_ID_28F640B3B: -			info->flash_id += FLASH_INTEL640B; -			info->sector_count = 135; -			info->size = 0x00800000 * (sizeof (FPW) / 2); -			break;	/* => 8 or 16 MB        */ - -		default: -			info->flash_id = FLASH_UNKNOWN; -			info->sector_count = 0; -			info->size = 0; -			return (0);	/* => no or unknown flash */ -		} - -	flash_get_offsets ((ulong) addr, info); - -	/* Put FLASH back in read mode */ -	flash_reset (info); - -	return (info->size); -} - -#ifdef CONFIG_SYS_FLASH_PROTECTION -/*----------------------------------------------------------------------- - */ - -static void flash_sync_real_protect (flash_info_t * info) -{ -	FPWV *addr = (FPWV *) (info->start[0]); -	FPWV *sect; -	int i; - -	switch (info->flash_id & FLASH_TYPEMASK) { -	case FLASH_28F800C3B: -	case FLASH_28F800C3T: -	case FLASH_28F160C3B: -	case FLASH_28F160C3T: -	case FLASH_28F320C3B: -	case FLASH_28F320C3T: -	case FLASH_28F640C3B: -	case FLASH_28F640C3T: -		/* check for protected sectors */ -		*addr = (FPW) 0x00900090; -		for (i = 0; i < info->sector_count; i++) { -			/* read sector protection at sector address, (A7 .. A0) = 0x02. -			 * D0 = 1 for each device if protected. -			 * If at least one device is protected the sector is marked -			 * protected, but mixed protected and  unprotected devices -			 * within a sector should never happen. -			 */ -			sect = (FPWV *) (info->start[i]); -			info->protect[i] = -				(sect[2] & (FPW) (0x00010001)) ? 1 : 0; -		} - -		/* Put FLASH back in read mode */ -		flash_reset (info); -		break; - -	case FLASH_AM640U: -	case FLASH_AM800T: -	default: -		/* no hardware protect that we support */ -		break; -	} -} -#endif - -/*----------------------------------------------------------------------- - */ - -int flash_erase (flash_info_t * info, int s_first, int s_last) -{ -	FPWV *addr; -	int flag, prot, sect; -	int intel = (info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL; -	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; -	} - -	switch (info->flash_id & FLASH_TYPEMASK) { -	case FLASH_INTEL800B: -	case FLASH_INTEL160B: -	case FLASH_INTEL320B: -	case FLASH_INTEL640B: -	case FLASH_28F800C3B: -	case FLASH_28F160C3B: -	case FLASH_28F320C3B: -	case FLASH_28F640C3B: -	case FLASH_AM640U: -	case FLASH_AM800T: -		break; -	case FLASH_UNKNOWN: -	default: -		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"); -	} - -	/* Start erase on unprotected sectors */ -	for (sect = s_first; sect <= s_last && rcode == 0; sect++) { - -		if (info->protect[sect] != 0)	/* protected, skip it */ -			continue; - -		/* Disable interrupts which might cause a timeout here */ -		flag = disable_interrupts (); - -		start = get_timer(0); -		last = 0; - -		addr = (FPWV *) (info->start[sect]); -		if (intel) { -			*addr = (FPW) 0x00500050;	/* clear status register */ -			*addr = (FPW) 0x00200020;	/* erase setup */ -			*addr = (FPW) 0x00D000D0;	/* erase confirm */ -		} else { -			/* must be AMD style if not Intel */ -			FPWV *base;	/* first address in bank */ - -			base = (FPWV *) (info->start[0]); -			base[0x0555] = (FPW) 0x00AA00AA;	/* unlock */ -			base[0x02AA] = (FPW) 0x00550055;	/* unlock */ -			base[0x0555] = (FPW) 0x00800080;	/* erase mode */ -			base[0x0555] = (FPW) 0x00AA00AA;	/* unlock */ -			base[0x02AA] = (FPW) 0x00550055;	/* unlock */ -			*addr = (FPW) 0x00300030;	/* erase sector */ -		} - -		/* re-enable interrupts if necessary */ -		if (flag) -			enable_interrupts (); - -		/* wait at least 50us for AMD, 80us for Intel. -		 * Let's wait 1 ms. -		 */ -		udelay (1000); - -		while ((*addr & (FPW) 0x00800080) != (FPW) 0x00800080) { -			if ((now = -			     get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) { -				printf ("Timeout\n"); - -				if (intel) { -					/* suspend erase        */ -					*addr = (FPW) 0x00B000B0; -				} - -				flash_reset (info);	/* reset to read mode */ -				rcode = 1;	/* failed */ -				break; -			} - -			/* show that we're waiting */ -			if ((now - last) > 1 * CONFIG_SYS_HZ) {	/* every second */ -				putc ('.'); -				last = now; -			} -		} - -		flash_reset (info);	/* reset to read mode   */ -	} - -	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) -{ -	FPW data = 0;		/* 16 or 32 bit word, matches flash bus width on MPC8XX */ -	int bytes;		/* number of bytes to program in current word         */ -	int left;		/* number of bytes left to program                    */ -	int i, res; - -	for (left = cnt, res = 0; -	     left > 0 && res == 0; -	     addr += sizeof (data), left -= sizeof (data) - bytes) { - -		bytes = addr & (sizeof (data) - 1); -		addr &= ~(sizeof (data) - 1); - -		/* combine source and destination data so can program -		 * an entire word of 16 or 32 bits -		 */ -#ifdef CONFIG_SYS_LITTLE_ENDIAN -		for (i = 0; i < sizeof (data); i++) { -			data >>= 8; -			if (i < bytes || i - bytes >= left) -				data += (*((uchar *) addr + i)) << 24; -			else -				data += (*src++) << 24; -		} -#else -		for (i = 0; i < sizeof (data); i++) { -			data <<= 8; -			if (i < bytes || i - bytes >= left) -				data += *((uchar *) addr + i); -			else -				data += *src++; -		} -#endif - -		/* write one word to the flash */ -		switch (info->flash_id & FLASH_VENDMASK) { -		case FLASH_MAN_AMD: -			res = write_word_amd (info, (FPWV *) addr, data); -			break; -		case FLASH_MAN_INTEL: -			res = write_word_intel (info, (FPWV *) addr, data); -			break; -		default: -			/* unknown flash type, error! */ -			printf ("missing or unknown FLASH type\n"); -			res = 1;	/* not really a timeout, but gives error */ -			break; -		} -	} - -	return (res); -} - -/*----------------------------------------------------------------------- - * Write a word to Flash for AMD FLASH - * A word is 16 or 32 bits, whichever the bus width of the flash bank - * (not an individual chip) is. - * - * returns: - * 0 - OK - * 1 - write timeout - * 2 - Flash not erased - */ -static int write_word_amd (flash_info_t * info, FPWV * dest, FPW data) -{ -	int flag; -	int res = 0;		/* result, assume success       */ -	FPWV *base;		/* first address in flash bank  */ -	ulong start; - -	/* Check if Flash is (sufficiently) erased */ -	if ((*dest & data) != data) { -		return (2); -	} - - -	base = (FPWV *) (info->start[0]); - -	/* Disable interrupts which might cause a timeout here */ -	flag = disable_interrupts (); - -	base[0x0555] = (FPW) 0x00AA00AA;	/* unlock */ -	base[0x02AA] = (FPW) 0x00550055;	/* unlock */ -	base[0x0555] = (FPW) 0x00A000A0;	/* selects program mode */ - -	*dest = data;		/* start programming the data   */ - -	/* re-enable interrupts if necessary */ -	if (flag) -		enable_interrupts (); - -	start = get_timer(0); - -	/* data polling for D7 */ -	while (res == 0 -	       && (*dest & (FPW) 0x00800080) != (data & (FPW) 0x00800080)) { -		if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) { -			*dest = (FPW) 0x00F000F0;	/* reset bank */ -			res = 1; -		} -	} - -	return (res); -} - -/*----------------------------------------------------------------------- - * Write a word to Flash for Intel FLASH - * A word is 16 or 32 bits, whichever the bus width of the flash bank - * (not an individual chip) is. - * - * returns: - * 0 - OK - * 1 - write timeout - * 2 - Flash not erased - */ -static int write_word_intel (flash_info_t * info, FPWV * dest, FPW data) -{ -	int flag; -	int res = 0;		/* result, assume success       */ -	ulong start; - -	/* Check if Flash is (sufficiently) erased */ -	if ((*dest & data) != data) { -		return (2); -	} - -	/* Disable interrupts which might cause a timeout here */ -	flag = disable_interrupts (); - -	*dest = (FPW) 0x00500050;	/* clear status register        */ -	*dest = (FPW) 0x00FF00FF;	/* make sure in read mode       */ -	*dest = (FPW) 0x00400040;	/* program setup                */ - -	*dest = data;		/* start programming the data   */ - -	/* re-enable interrupts if necessary */ -	if (flag) -		enable_interrupts (); - -	start = get_timer(0); - -	while (res == 0 && (*dest & (FPW) 0x00800080) != (FPW) 0x00800080) { -		if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) { -			*dest = (FPW) 0x00B000B0;	/* Suspend program      */ -			res = 1; -		} -	} - -	if (res == 0 && (*dest & (FPW) 0x00100010)) -		res = 1;	/* write failed, time out error is close enough */ - -	*dest = (FPW) 0x00500050;	/* clear status register        */ -	*dest = (FPW) 0x00FF00FF;	/* make sure in read mode       */ - -	return (res); -} - -#ifdef CONFIG_SYS_FLASH_PROTECTION -/*----------------------------------------------------------------------- - */ -int flash_real_protect (flash_info_t * info, long sector, int prot) -{ -	int rcode = 0;		/* assume success */ -	FPWV *addr;		/* address of sector */ -	FPW value; - -	addr = (FPWV *) (info->start[sector]); - -	switch (info->flash_id & FLASH_TYPEMASK) { -	case FLASH_28F800C3B: -	case FLASH_28F800C3T: -	case FLASH_28F160C3B: -	case FLASH_28F160C3T: -	case FLASH_28F320C3B: -	case FLASH_28F320C3T: -	case FLASH_28F640C3B: -	case FLASH_28F640C3T: -		flash_reset (info);	/* make sure in read mode */ -		*addr = (FPW) 0x00600060L;	/* lock command setup */ -		if (prot) -			*addr = (FPW) 0x00010001L;	/* lock sector */ -		else -			*addr = (FPW) 0x00D000D0L;	/* unlock sector */ -		flash_reset (info);	/* reset to read mode */ - -		/* now see if it really is locked/unlocked as requested */ -		*addr = (FPW) 0x00900090; -		/* read sector protection at sector address, (A7 .. A0) = 0x02. -		 * D0 = 1 for each device if protected. -		 * If at least one device is protected the sector is marked -		 * protected, but return failure. Mixed protected and -		 * unprotected devices within a sector should never happen. -		 */ -		value = addr[2] & (FPW) 0x00010001; -		if (value == 0) -			info->protect[sector] = 0; -		else if (value == (FPW) 0x00010001) -			info->protect[sector] = 1; -		else { -			/* error, mixed protected and unprotected */ -			rcode = 1; -			info->protect[sector] = 1; -		} -		if (info->protect[sector] != prot) -			rcode = 1;	/* failed to protect/unprotect as requested */ - -		/* reload all protection bits from hardware for now */ -		flash_sync_real_protect (info); -		break; - -	case FLASH_AM640U: -	case FLASH_AM800T: -	default: -		/* no hardware protect that we support */ -		info->protect[sector] = prot; -		break; -	} - -	return rcode; -} -#endif |