Remove unnecessary flash.c file.

board/mpc8641hpcn/flash.c

@@ -1,550 +0,0 @@
-/*
- * (C) Copyright 2003 Motorola Inc.
- *  Xianghua Xiao,(X.Xiao@motorola.com)
- *
- * (C) Copyright 2000, 2001
- *  Wolfgang Denk, DENX Software Engineering, wd@denx.de.
- *
- * (C) Copyright 2001, Stuart Hughes, Lineo Inc, stuarth@lineo.com
- * Add support the Sharp chips on the mpc8260ads.
- * I started with board/ip860/flash.c and made changes I found in
- * the MTD project by David Schleef.
- *
- * 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>
-
-#if !defined(CFG_NO_FLASH)
-
-flash_info_t	flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips	*/
-
-#if defined(CFG_ENV_IS_IN_FLASH)
-# ifndef  CFG_ENV_ADDR
-#  define CFG_ENV_ADDR	(CFG_FLASH_BASE + CFG_ENV_OFFSET)
-# endif
-# ifndef  CFG_ENV_SIZE
-#  define CFG_ENV_SIZE	CFG_ENV_SECT_SIZE
-# endif
-# ifndef  CFG_ENV_SECT_SIZE
-#  define CFG_ENV_SECT_SIZE  CFG_ENV_SIZE
-# endif
-#endif
-
-#undef DEBUG
-
-/*-----------------------------------------------------------------------
- * 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 int clear_block_lock_bit(vu_long * addr);
-/*-----------------------------------------------------------------------
- */
-
-unsigned long flash_init (void)
-{
-	unsigned long size;
-	int i;
-
-	/* Init: enable write,
-	 * or we cannot even write flash commands
-	 */
-	for (i=0; i<CFG_MAX_FLASH_BANKS; ++i) {
-		flash_info[i].flash_id = FLASH_UNKNOWN;
-
-		/* set the default sector offset */
-	}
-
-	/* Static FLASH Bank configuration here - FIXME XXX */
-
-	size = flash_get_size((vu_long *)CFG_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, size<<20);
-	}
-
-	/* Re-do sizing to get full correct info */
-	size = flash_get_size((vu_long *)CFG_FLASH_BASE, &flash_info[0]);
-
-	flash_info[0].size = size;
-
-#if CFG_MONITOR_BASE >= CFG_FLASH_BASE
-	/* monitor protection ON by default */
-	flash_protect(FLAG_PROTECT_SET,
-		      CFG_MONITOR_BASE,
-		      CFG_MONITOR_BASE+monitor_flash_len-1,
-		      &flash_info[0]);
-
-#ifdef	CFG_ENV_IS_IN_FLASH
-	/* ENV protection ON by default */
-	flash_protect(FLAG_PROTECT_SET,
-		      CFG_ENV_ADDR,
-		      CFG_ENV_ADDR+CFG_ENV_SECT_SIZE-1,
-		      &flash_info[0]);
-#endif
-#endif
-	return (size);
-}
-
-/*-----------------------------------------------------------------------
- */
-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_INTEL:	printf ("Intel ");		break;
-	case FLASH_MAN_SHARP:   printf ("Sharp ");		break;
-	default:		printf ("Unknown Vendor ");	break;
-	}
-
-	switch (info->flash_id & FLASH_TYPEMASK) {
-	case FLASH_28F016SV:	printf ("28F016SV (16 Mbit, 32 x 64k)\n");
-				break;
-	case FLASH_28F160S3:	printf ("28F160S3 (16 Mbit, 32 x 512K)\n");
-				break;
-	case FLASH_28F320S3:	printf ("28F320S3 (32 Mbit, 64 x 512K)\n");
-				break;
-	case FLASH_LH28F016SCT: printf ("28F016SC (16 Mbit, 32 x 64K)\n");
-				break;
-	case FLASH_28F640J3A:   printf ("28F640J3A (64 Mbit, 64 x 128K)\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;
-	ulong sector_offset;
-
-#ifdef DEBUG
-	printf("Check flash at 0x%08x\n",(uint)addr);
-#endif
-	/* Write "Intelligent Identifier" command: read Manufacturer ID */
-	*addr = 0x90909090;
-	udelay(20);
-	asm("sync");
-
-	value = addr[0] & 0x00FF00FF;
-
-#ifdef DEBUG
-	printf("manufacturer=0x%x\n",(uint)value);
-#endif
-	switch (value) {
-	case MT_MANUFACT:	/* SHARP, MT or => Intel */
-	case INTEL_ALT_MANU:
-		info->flash_id = FLASH_MAN_INTEL;
-		break;
-	default:
-#if defined(CONFIG_MPC8641_SIM)
-	  info->flash_id = FLASH_MAN_INTEL;
-	  break;
-#else
-		printf("unknown manufacturer: %x\n", (unsigned int)value);
-		info->flash_id = FLASH_UNKNOWN;
-		info->sector_count = 0;
-		info->size = 0;
-		return (0);			/* no or unknown flash	*/
-#endif
-	}
-
-	value = addr[1] & 0x00FF00FF;             /* device ID            */
-
-#ifdef DEBUG
-	printf("deviceID=0x%x\n",(uint)value);
-#endif
-	switch (value) {
-	case (INTEL_ID_28F016S):
-		info->flash_id += FLASH_28F016SV;
-		info->sector_count = 32;
-		info->size = 0x00400000;
-		sector_offset = 0x20000;
-		break;				/* => 2x2 MB		*/
-
-	case (INTEL_ID_28F160S3):
-		info->flash_id += FLASH_28F160S3;
-		info->sector_count = 32;
-		info->size = 0x00400000;
-		sector_offset = 0x20000;
-		break;				/* => 2x2 MB		*/
-
-	case (INTEL_ID_28F320S3):
-		info->flash_id += FLASH_28F320S3;
-		info->sector_count = 64;
-		info->size = 0x00800000;
-		sector_offset = 0x20000;
-		break;				/* => 2x4 MB		*/
-
-	case (INTEL_ID_28F640J3A):
-		info->flash_id += FLASH_28F640J3A;
-		info->sector_count = 64;
-		info->size = 0x01000000;
-		sector_offset = 0x40000;
-		break;                          /* => 2x8 MB             */
-
-	case SHARP_ID_28F016SCL:
-	case SHARP_ID_28F016SCZ:
-		info->flash_id      = FLASH_MAN_SHARP | FLASH_LH28F016SCT;
-		info->sector_count  = 32;
-		info->size          = 0x00800000;
-		sector_offset = 0x40000;
-		break;				/* => 4x2 MB		*/
-
-
-	default:
-#if defined(CONFIG_MPC8641_SIM)
-		info->flash_id += FLASH_28F640J3A;
-		info->sector_count = 64;
-		info->size = 0x01000000;
-		sector_offset = 0x40000;
-		break;                          /* => 2x8 MB             */
-#else
-		info->flash_id = FLASH_UNKNOWN;
-		return (0);			/* => no or unknown flash */
-#endif
-
-	}
-
-	/* set up sector start address table */
-	for (i = 0; i < info->sector_count; i++) {
-		info->start[i] = base;
-		base += sector_offset;
-		/* don't know how to check sector protection */
-		info->protect[i] = 0;
-	}
-
-	/*
-	 * Prevent writes to uninitialized FLASH.
-	 */
-	if (info->flash_id != FLASH_UNKNOWN) {
-		addr = (vu_long *)info->start[0];
-		*addr = 0xFFFFFF;	/* reset bank to read array mode */
-		asm("sync");
-	}
-
-	return (info->size);
-}
-
-
-/*-----------------------------------------------------------------------
- */
-
-int	flash_erase (flash_info_t *info, int s_first, int s_last)
-{
-	int flag, prot, 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_VENDMASK) != FLASH_MAN_INTEL)
-	     && ((info->flash_id & FLASH_VENDMASK) != FLASH_MAN_SHARP) ) {
-		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");
-	}
-
-#ifdef DEBUG
-	printf("\nFlash Erase:\n");
-#endif
-	/* Make Sure Block Lock Bit is not set. */
-	if(clear_block_lock_bit((vu_long *)(info->start[s_first]))){
-		return 1;
-	}
-
-	/* Start erase on unprotected sectors */
-#if defined(DEBUG)
-	printf("Begin to erase now,s_first=0x%x s_last=0x%x...\n",s_first,s_last);
-#endif
-	for (sect = s_first; sect<=s_last; sect++) {
-		if (info->protect[sect] == 0) {	/* not protected */
-			vu_long *addr = (vu_long *)(info->start[sect]);
-			asm("sync");
-
-			last = start = get_timer (0);
-
-			/* Disable interrupts which might cause a timeout here */
-			flag = disable_interrupts();
-
-			/* Reset Array */
-			*addr = 0xffffffff;
-			asm("sync");
-			/* Clear Status Register */
-			*addr = 0x50505050;
-			asm("sync");
-			/* Single Block Erase Command */
-			*addr = 0x20202020;
-			asm("sync");
-			/* Confirm */
-			*addr = 0xD0D0D0D0;
-			asm("sync");
-
-			if((info->flash_id & FLASH_TYPEMASK) != FLASH_LH28F016SCT) {
-			    /* Resume Command, as per errata update */
-			    *addr = 0xD0D0D0D0;
-			    asm("sync");
-			}
-
-			/* re-enable interrupts if necessary */
-			if (flag)
-				enable_interrupts();
-
-			/* wait at least 80us - let's wait 1 ms */
-			udelay (1000);
-			while ((*addr & 0x00800080) != 0x00800080) {
-				if(*addr & 0x00200020){
-					printf("Error in Block Erase - Lock Bit may be set!\n");
-					printf("Status Register = 0x%X\n", (uint)*addr);
-					*addr = 0xFFFFFFFF;	/* reset bank */
-					asm("sync");
-					return 1;
-				}
-				if ((now=get_timer(start)) > CFG_FLASH_ERASE_TOUT) {
-					printf ("Timeout\n");
-					*addr = 0xFFFFFFFF;	/* reset bank */
-					asm("sync");
-					return 1;
-				}
-				/* show that we're waiting */
-				if ((now - last) > 1000) {	/* every second */
-					putc ('.');
-					last = now;
-				}
-			}
-
-			/* reset to read mode */
-			*addr = 0xFFFFFFFF;
-			asm("sync");
-		}
-	}
-
-	printf ("flash erase 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 *)dest;
-	ulong start, csr;
-	int flag;
-
-	/* Check if Flash is (sufficiently) erased */
-	if ((*addr & data) != data) {
-		return (2);
-	}
-	/* Disable interrupts which might cause a timeout here */
-	flag = disable_interrupts();
-
-	/* Write Command */
-	*addr = 0x10101010;
-	asm("sync");
-
-	/* Write Data */
-	*addr = data;
-
-	/* re-enable interrupts if necessary */
-	if (flag)
-		enable_interrupts();
-
-	/* data polling for D7 */
-	start = get_timer (0);
-	flag  = 0;
-
-	while (((csr = *addr) & 0x00800080) != 0x00800080) {
-		if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
-			flag = 1;
-			break;
-		}
-	}
-	if (csr & 0x40404040) {
-		printf ("CSR indicates write error (%08lx) at %08lx\n", csr, (ulong)addr);
-		flag = 1;
-	}
-
-	/* Clear Status Registers Command */
-	*addr = 0x50505050;
-	asm("sync");
-	/* Reset to read array mode */
-	*addr = 0xFFFFFFFF;
-	asm("sync");
-
-	return (flag);
-}
-
-/*-----------------------------------------------------------------------
- * Clear Block Lock Bit, returns:
- * 0 - OK
- * 1 - Timeout
- */
-
-static int clear_block_lock_bit(vu_long  * addr)
-{
-	ulong start, now;
-
-	/* Reset Array */
-	*addr = 0xffffffff;
-	asm("sync");
-	/* Clear Status Register */
-	*addr = 0x50505050;
-	asm("sync");
-
-	*addr = 0x60606060;
-	asm("sync");
-	*addr = 0xd0d0d0d0;
-	asm("sync");
-
-	start = get_timer (0);
-	while((*addr & 0x00800080) != 0x00800080){
-		if ((now=get_timer(start)) > CFG_FLASH_ERASE_TOUT) {
-			printf ("Timeout on clearing Block Lock Bit\n");
-			*addr = 0xFFFFFFFF;	/* reset bank */
-			asm("sync");
-			return 1;
-		}
-	}
-	return 0;
-}
-
-#endif /* !CFG_NO_FLASH */