Remove obsolete flash driver board/tqm5200/flash.c

Patch by Martin Krause, 11 Jan 2006

2 files changed, 0 insertions, 498 deletions

diff --git a/board/tqm5200/Makefile b/board/tqm5200/Makefile
index c234332..ab0ff1a 100644
--- a/board/tqm5200/Makefile
+++ b/board/tqm5200/Makefile
@@ -25,7 +25,6 @@ include $(TOPDIR)/config.mk
 
 LIB	= lib$(BOARD).a
 
-#OBJS	:= $(BOARD).o flash.o
 OBJS	:= $(BOARD).o cmd_stk52xx.o
 
 $(LIB):	$(OBJS) $(SOBJS)
diff --git a/board/tqm5200/flash.c b/board/tqm5200/flash.c
deleted file mode 100644
index af4d78a..0000000
--- a/board/tqm5200/flash.c
+++ /dev/null
@@ -1,497 +0,0 @@
-/*
- * (C) Copyright 2003-2004
- * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
- *
- * (C) Copyright 2004
- * Martin Krause, TQ-Systems GmbH, martin.krause@tqs.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>
-
-flash_info_t	flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
-
-/*
- * CPU to flash interface is 32-bit, so make declaration accordingly
- */
-typedef unsigned long FLASH_PORT_WIDTH;
-typedef volatile unsigned long FLASH_PORT_WIDTHV;
-
-#define FPW	FLASH_PORT_WIDTH
-#define FPWV	FLASH_PORT_WIDTHV
-
-#define FLASH_CYCLE1	0x0555
-#define FLASH_CYCLE2	0x02aa
-
-/*-----------------------------------------------------------------------
- * Functions
- */
-static ulong flash_get_size(FPWV *addr, flash_info_t *info);
-static void flash_reset(flash_info_t *info);
-static int write_word_amd(flash_info_t *info, FPWV *dest, FPW data);
-static flash_info_t *flash_get_info(ulong base);
-
-/*-----------------------------------------------------------------------
- * flash_init()
- *
- * sets up flash_info and returns size of FLASH (bytes)
- */
-unsigned long flash_init (void)
-{
-	unsigned long size = 0;
-	extern void flash_preinit(void);
-	ulong flashbase = CFG_FLASH_BASE;
-
-	flash_preinit();
-
-	/* Init: no FLASHes known */
-	memset(&flash_info[0], 0, sizeof(flash_info_t));
-
-	flash_info[0].size =
-		flash_get_size((FPW *)flashbase, &flash_info[0]);
-
-	size = flash_info[0].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_get_info(CFG_MONITOR_BASE));
-#endif
-
-#ifdef	CFG_ENV_IS_IN_FLASH
-	/* ENV protection ON by default */
-	flash_protect(FLAG_PROTECT_SET,
-		      CFG_ENV_ADDR,
-		      CFG_ENV_ADDR+CFG_ENV_SIZE-1,
-		      flash_get_info(CFG_ENV_ADDR));
-#endif
-
-	return size ? size : 1;
-}
-
-/*-----------------------------------------------------------------------
- */
-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 flash_info_t *flash_get_info(ulong base)
-{
-	int i;
-	flash_info_t * info;
-
-	for (i = 0; i < CFG_MAX_FLASH_BANKS; i ++) {
-		info = & flash_info[i];
-		if (info->size && info->start[0] <= base &&
-		    base <= info->start[0] + info->size - 1)
-			break;
-	}
-
-	return i == CFG_MAX_FLASH_BANKS ? 0 : info;
-}
-
-/*-----------------------------------------------------------------------
- */
-
-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_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;
-	}
-
-	switch (info->flash_id & FLASH_TYPEMASK) {
-	case FLASH_AMLV128U:
-		printf ("AM29LV128ML (128Mbit, uniform sector size)\n");
-		break;
-	case FLASH_AM160B:
-		printf ("AM29LV160B (16 Mbit, bottom boot sect)\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");
-	return;
-}
-
-/*-----------------------------------------------------------------------
- */
-
-/*
- * The following code cannot be run from FLASH!
- */
-
-ulong flash_get_size (FPWV *addr, flash_info_t *info)
-{
-	int i;
-	ulong base = (ulong)addr;
-
-	/* Write auto select command: read Manufacturer ID */
-	/* Write auto select command sequence and test FLASH answer */
-	addr[FLASH_CYCLE1] = (FPW)0x00AA00AA;	/* for AMD, Intel ignores this */
-	addr[FLASH_CYCLE2] = (FPW)0x00550055;	/* for AMD, Intel ignores this */
-	addr[FLASH_CYCLE1] = (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.
-	 */
-	udelay(100);
-	switch (addr[0] & 0xff) {
-
-	case (uchar)AMD_MANUFACT:
-		debug ("Manufacturer: AMD (Spansion)\n");
-		info->flash_id = FLASH_MAN_AMD;
-		break;
-
-	case (uchar)INTEL_MANUFACT:
-		debug ("Manufacturer: Intel (not supported yet)\n");
-		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 ((FPW)addr[1]) {
-
-	case (FPW)AMD_ID_LV160B:
-		debug ("Chip: AM29LV160MB\n");
-		info->flash_id += FLASH_AM160B;
-		info->sector_count = 35;
-		info->size = 0x00400000;
-		/*
-		 * The first 4 sectors are 16 kB, 8 kB, 8 kB and 32 kB, all
-		 * the other ones are 64 kB
-		 */
-		info->start[0] = base + 0x00000000;
-		info->start[1] = base + 0x00008000;
-		info->start[2] = base + 0x0000C000;
-		info->start[3] = base + 0x00010000;
-		for( i = 4; i < info->sector_count; i++ )
-			info->start[i] =
-				base + (i * 2 * (64 << 10)) - 0x00060000;
-		break;		/* => 4 MB */
-
-	case AMD_ID_MIRROR:
-		debug ("Mirror Bit flash: addr[14] = %08lX  addr[15] = %08lX\n",
-			addr[14], addr[15]);
-
-		switch(addr[14]) {
-		case AMD_ID_LV128U_2:
-			if (addr[15] != AMD_ID_LV128U_3) {
-				debug ("Chip: AM29LVxxxM -> unknown\n");
-				info->flash_id = FLASH_UNKNOWN;
-				info->sector_count = 0;
-				info->size = 0;
-			} else {
-				debug ("Chip: AM29LV128M\n");
-				info->flash_id += FLASH_AMLV128U;
-				info->sector_count = 256;
-				info->size = 0x02000000;
-				for (i = 0; i < info->sector_count; i++) {
-					info->start[i] = base;
-					base += 0x20000;
-				}
-			}
-			break;	/* => 32 MB	*/
-		default:
-			debug ("Chip: *** unknown ***\n");
-			info->flash_id = FLASH_UNKNOWN;
-			info->sector_count = 0;
-			info->size = 0;
-			break;
-		}
-		break;
-
-	default:
-		info->flash_id = FLASH_UNKNOWN;
-		info->sector_count = 0;
-		info->size = 0;
-	}
-
-	/* Put FLASH back in read mode */
-	flash_reset(info);
-
-	return (info->size);
-}
-
-/*-----------------------------------------------------------------------
- */
-
-int	flash_erase (flash_info_t *info, int s_first, int s_last)
-{
-	vu_long *addr = (vu_long*)(info->start[0]);
-	int flag, prot, sect, l_sect;
-	ulong start, now, last;
-
-	debug ("flash_erase: first: %d last: %d\n", s_first, s_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) ||
-	    (info->flash_id > FLASH_AMD_COMP)) {
-		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");
-	}
-
-	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 = (vu_long*)(info->start[sect]);
-			addr[0] = 0x00300030;
-			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 = (vu_long*)(info->start[l_sect]);
-	while ((addr[0] & 0x00800080) != 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;
-		}
-	}
-
-DONE:
-	/* reset to read mode */
-	addr = (volatile unsigned long *)info->start[0];
-	addr[0] = 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;
-
-	/*
-	 * Get lower word aligned address. Assumes 32 bit flash bus width.
-	 */
-	wp = (addr & ~3);
-
-	/*
-	 * 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_amd(info, (FPW *)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_amd(info, (FPW *)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_amd(info, (FPW *)wp, data));
-}
-
-/*-----------------------------------------------------------------------
- * 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)
-{
-	ulong start;
-	int flag;
-	FPWV *base;		/* first address in flash bank	*/
-
-	/* 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[FLASH_CYCLE1] = (FPW)0x00AA00AA;	/* unlock */
-	base[FLASH_CYCLE2] = (FPW)0x00550055;	/* unlock */
-	base[FLASH_CYCLE1] = (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 ((*dest & (FPW)0x00800080) != (data & (FPW)0x00800080)) {
-		if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
-			*dest = (FPW)0x00F000F0;	/* reset bank */
-			return (1);
-		}
-	}
-	return (0);
-}