Merge with /home/wd/git/u-boot/master

Code cleanup.

10 files changed, 2029 insertions, 306 deletions

diff --git a/drivers/cfi_flash.c b/drivers/cfi_flash.c
index 4b7a1107a9..ff4d85f3f0 100644
--- a/drivers/cfi_flash.c
+++ b/drivers/cfi_flash.c
@@ -104,12 +104,15 @@
 #define AMD_CMD_ERASE_SECTOR		0x30
 #define AMD_CMD_UNLOCK_START		0xAA
 #define AMD_CMD_UNLOCK_ACK		0x55
+#define AMD_CMD_WRITE_TO_BUFFER		0x25
+#define AMD_CMD_WRITE_BUFFER_CONFIRM	0x29
 
 #define AMD_STATUS_TOGGLE		0x40
 #define AMD_STATUS_ERROR		0x20
-#define AMD_ADDR_ERASE_START		0x555
-#define AMD_ADDR_START			0x555
-#define AMD_ADDR_ACK			0x2AA
+
+#define AMD_ADDR_ERASE_START	((info->portwidth == FLASH_CFI_8BIT) ? 0xAAA : 0x555)
+#define AMD_ADDR_START		((info->portwidth == FLASH_CFI_8BIT) ? 0xAAA : 0x555)
+#define AMD_ADDR_ACK		((info->portwidth == FLASH_CFI_8BIT) ? 0x555 : 0x2AA)
 
 #define FLASH_OFFSET_CFI		0x55
 #define FLASH_OFFSET_CFI_RESP		0x10
@@ -175,6 +178,13 @@ static ulong bank_base[CFG_MAX_FLASH_BANKS] = CFG_FLASH_BANKS_LIST;
 flash_info_t flash_info[CFG_MAX_FLASH_BANKS];		/* FLASH chips info */
 #endif
 
+/*
+ * Check if chip width is defined. If not, start detecting with 8bit.
+ */
+#ifndef CFG_FLASH_CFI_WIDTH
+#define CFG_FLASH_CFI_WIDTH	FLASH_CFI_8BIT
+#endif
+
 
 /*-----------------------------------------------------------------------
  * Functions
@@ -190,10 +200,10 @@ static int flash_isequal (flash_info_t * info, flash_sect_t sect, uint offset, u
 static int flash_isset (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd);
 static int flash_toggle (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd);
 static int flash_detect_cfi (flash_info_t * info);
-ulong flash_get_size (ulong base, int banknum);
 static int flash_write_cfiword (flash_info_t * info, ulong dest, cfiword_t cword);
 static int flash_full_status_check (flash_info_t * info, flash_sect_t sector,
 				    ulong tout, char *prompt);
+ulong flash_get_size (ulong base, int banknum);
 #if defined(CFG_ENV_IS_IN_FLASH) || defined(CFG_ENV_ADDR_REDUND) || (CFG_MONITOR_BASE >= CFG_FLASH_BASE)
 static flash_info_t *flash_get_info(ulong base);
 #endif
@@ -328,6 +338,7 @@ ulong flash_read_long (flash_info_t * info, flash_sect_t sect, uint offset)
 	return retval;
 }
 
+
 /*-----------------------------------------------------------------------
  */
 unsigned long flash_init (void)
@@ -345,6 +356,24 @@ unsigned long flash_init (void)
 				i, flash_info[i].size, flash_info[i].size << 20);
 #endif /* CFG_FLASH_QUIET_TEST */
 		}
+#ifdef CFG_FLASH_PROTECTION
+		else {
+			char *s = getenv("unlock");
+
+			if (((s = getenv("unlock")) != NULL) && (strcmp(s, "yes") == 0)) {
+				/*
+				 * Only the U-Boot image and it's environment is protected,
+				 * all other sectors are unprotected (unlocked) if flash
+				 * hardware protection is used (CFG_FLASH_PROTECTION) and
+				 * the environment variable "unlock" is set to "yes".
+				 */
+				flash_protect (FLAG_PROTECT_CLEAR,
+					       flash_info[i].start[0],
+					       flash_info[i].start[0] + flash_info[i].size - 1,
+					       &flash_info[i]);
+			}
+		}
+#endif /* CFG_FLASH_PROTECTION */
 	}
 
 	/* Monitor protection ON by default */
@@ -565,7 +594,22 @@ int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
 	buffered_size = (info->portwidth / info->chipwidth);
 	buffered_size *= info->buffer_size;
 	while (cnt >= info->portwidth) {
-		i = buffered_size > cnt ? cnt : buffered_size;
+		/* prohibit buffer write when buffer_size is 1 */
+		if (info->buffer_size == 1) {
+			cword.l = 0;
+			for (i = 0; i < info->portwidth; i++)
+				flash_add_byte (info, &cword, *src++);
+			if ((rc = flash_write_cfiword (info, wp, cword)) != 0)
+				return rc;
+			wp += info->portwidth;
+			cnt -= info->portwidth;
+			continue;
+		}
+
+		/* write buffer until next buffered_size aligned boundary */
+		i = buffered_size - (wp % buffered_size);
+		if (i > cnt)
+			i = cnt;
 		if ((rc = flash_write_cfibuffer (info, wp, src, i)) != ERR_OK)
 			return rc;
 		i -= i & (info->portwidth - 1);
@@ -705,7 +749,7 @@ static int flash_status_check (flash_info_t * info, flash_sect_t sector,
 	/* Wait for command completion */
 	start = get_timer (0);
 	while (flash_is_busy (info, sector)) {
-		if (get_timer (start) > info->erase_blk_tout * CFG_HZ) {
+		if (get_timer (start) > tout) {
 			printf ("Flash %s timeout at address %lx data %lx\n",
 				prompt, info->start[sector],
 				flash_read_long (info, sector, 0));
@@ -729,7 +773,7 @@ static int flash_full_status_check (flash_info_t * info, flash_sect_t sector,
 	switch (info->vendor) {
 	case CFI_CMDSET_INTEL_EXTENDED:
 	case CFI_CMDSET_INTEL_STANDARD:
-		if ((retcode != ERR_OK)
+		if ((retcode == ERR_OK)
 		    && !flash_isequal (info, sector, 0, FLASH_STATUS_DONE)) {
 			retcode = ERR_INVAL;
 			printf ("Flash %s error at address %lx\n", prompt,
@@ -985,7 +1029,7 @@ static int flash_detect_cfi (flash_info_t * info)
 {
 	debug ("flash detect cfi\n");
 
-	for (info->portwidth = FLASH_CFI_8BIT;
+	for (info->portwidth = CFG_FLASH_CFI_WIDTH;
 	     info->portwidth <= FLASH_CFI_64BIT; info->portwidth <<= 1) {
 		for (info->chipwidth = FLASH_CFI_BY8;
 		     info->chipwidth <= info->portwidth;
@@ -1106,8 +1150,9 @@ ulong flash_get_size (ulong base, int banknum)
 		info->erase_blk_tout = (tmp * (1 << flash_read_uchar (info, FLASH_OFFSET_EMAX_TOUT)));
 		tmp = 1 << flash_read_uchar (info, FLASH_OFFSET_WBTOUT);
 		info->buffer_write_tout = (tmp * (1 << flash_read_uchar (info, FLASH_OFFSET_WBMAX_TOUT)));
-		tmp = 1 << flash_read_uchar (info, FLASH_OFFSET_WTOUT);
-		info->write_tout = (tmp * (1 << flash_read_uchar (info, FLASH_OFFSET_WMAX_TOUT))) / 1000;
+		tmp = (1 << flash_read_uchar (info, FLASH_OFFSET_WTOUT)) *
+		      (1 << flash_read_uchar (info, FLASH_OFFSET_WMAX_TOUT));
+		info->write_tout = tmp / 1000 + (tmp % 1000 ? 1 : 0); /* round up when converting to ms */
 		info->flash_id = FLASH_MAN_CFI;
 		if ((info->interface == FLASH_CFI_X8X16) && (info->chipwidth == FLASH_CFI_BY8)) {
 			info->portwidth >>= 1;	/* XXX - Need to test on x8/x16 in parallel. */
@@ -1118,13 +1163,26 @@ ulong flash_get_size (ulong base, int banknum)
 	return (info->size);
 }
 
+/* loop through the sectors from the highest address
+ * when the passed address is greater or equal to the sector address
+ * we have a match
+ */
+static flash_sect_t find_sector (flash_info_t * info, ulong addr)
+{
+	flash_sect_t sector;
+
+	for (sector = info->sector_count - 1; sector >= 0; sector--) {
+		if (addr >= info->start[sector])
+			break;
+	}
+	return sector;
+}
 
 /*-----------------------------------------------------------------------
  */
 static int flash_write_cfiword (flash_info_t * info, ulong dest,
 				cfiword_t cword)
 {
-
 	cfiptr_t ctladdr;
 	cfiptr_t cptr;
 	int flag;
@@ -1188,26 +1246,12 @@ static int flash_write_cfiword (flash_info_t * info, ulong dest,
 	if (flag)
 		enable_interrupts ();
 
-	return flash_full_status_check (info, 0, info->write_tout, "write");
+	return flash_full_status_check (info, find_sector (info, dest),
+					info->write_tout, "write");
 }
 
 #ifdef CFG_FLASH_USE_BUFFER_WRITE
 
-/* loop through the sectors from the highest address
- * when the passed address is greater or equal to the sector address
- * we have a match
- */
-static flash_sect_t find_sector (flash_info_t * info, ulong addr)
-{
-	flash_sect_t sector;
-
-	for (sector = info->sector_count - 1; sector >= 0; sector--) {
-		if (addr >= info->start[sector])
-			break;
-	}
-	return sector;
-}
-
 static int flash_write_cfibuffer (flash_info_t * info, ulong dest, uchar * cp,
 				  int len)
 {
@@ -1216,66 +1260,106 @@ static int flash_write_cfibuffer (flash_info_t * info, ulong dest, uchar * cp,
 	int retcode;
 	volatile cfiptr_t src;
 	volatile cfiptr_t dst;
-	/* buffered writes in the AMD chip set is not supported yet */
-	if((info->vendor ==  CFI_CMDSET_AMD_STANDARD) ||
-		(info->vendor == CFI_CMDSET_AMD_EXTENDED))
-		return ERR_INVAL;
 
-	src.cp = cp;
-	dst.cp = (uchar *) dest;
-	sector = find_sector (info, dest);
-	flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS);
-	flash_write_cmd (info, sector, 0, FLASH_CMD_WRITE_TO_BUFFER);
-	if ((retcode =
-	     flash_status_check (info, sector, info->buffer_write_tout,
-				 "write to buffer")) == ERR_OK) {
-		/* reduce the number of loops by the width of the port	*/
+	switch (info->vendor) {
+	case CFI_CMDSET_INTEL_STANDARD:
+	case CFI_CMDSET_INTEL_EXTENDED:
+		src.cp = cp;
+		dst.cp = (uchar *) dest;
+		sector = find_sector (info, dest);
+		flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS);
+		flash_write_cmd (info, sector, 0, FLASH_CMD_WRITE_TO_BUFFER);
+		if ((retcode = flash_status_check (info, sector, info->buffer_write_tout,
+						   "write to buffer")) == ERR_OK) {
+			/* reduce the number of loops by the width of the port	*/
+			switch (info->portwidth) {
+			case FLASH_CFI_8BIT:
+				cnt = len;
+				break;
+			case FLASH_CFI_16BIT:
+				cnt = len >> 1;
+				break;
+			case FLASH_CFI_32BIT:
+				cnt = len >> 2;
+				break;
+			case FLASH_CFI_64BIT:
+				cnt = len >> 3;
+				break;
+			default:
+				return ERR_INVAL;
+				break;
+			}
+			flash_write_cmd (info, sector, 0, (uchar) cnt - 1);
+			while (cnt-- > 0) {
+				switch (info->portwidth) {
+				case FLASH_CFI_8BIT:
+					*dst.cp++ = *src.cp++;
+					break;
+				case FLASH_CFI_16BIT:
+					*dst.wp++ = *src.wp++;
+					break;
+				case FLASH_CFI_32BIT:
+					*dst.lp++ = *src.lp++;
+					break;
+				case FLASH_CFI_64BIT:
+					*dst.llp++ = *src.llp++;
+					break;
+				default:
+					return ERR_INVAL;
+					break;
+				}
+			}
+			flash_write_cmd (info, sector, 0,
+					 FLASH_CMD_WRITE_BUFFER_CONFIRM);
+			retcode = flash_full_status_check (info, sector,
+							   info->buffer_write_tout,
+							   "buffer write");
+		}
+		return retcode;
+
+	case CFI_CMDSET_AMD_STANDARD:
+	case CFI_CMDSET_AMD_EXTENDED:
+		src.cp = cp;
+		dst.cp = (uchar *) dest;
+		sector = find_sector (info, dest);
+
+		flash_unlock_seq(info,0);
+		flash_write_cmd (info, sector, 0, AMD_CMD_WRITE_TO_BUFFER);
+
 		switch (info->portwidth) {
 		case FLASH_CFI_8BIT:
 			cnt = len;
+			flash_write_cmd (info, sector, 0,  (uchar) cnt - 1);
+			while (cnt-- > 0) *dst.cp++ = *src.cp++;
 			break;
 		case FLASH_CFI_16BIT:
 			cnt = len >> 1;
+			flash_write_cmd (info, sector, 0,  (uchar) cnt - 1);
+			while (cnt-- > 0) *dst.wp++ = *src.wp++;
 			break;
 		case FLASH_CFI_32BIT:
 			cnt = len >> 2;
+			flash_write_cmd (info, sector, 0,  (uchar) cnt - 1);
+			while (cnt-- > 0) *dst.lp++ = *src.lp++;
 			break;
 		case FLASH_CFI_64BIT:
 			cnt = len >> 3;
+			flash_write_cmd (info, sector, 0,  (uchar) cnt - 1);
+			while (cnt-- > 0) *dst.llp++ = *src.llp++;
 			break;
 		default:
 			return ERR_INVAL;
-			break;
 		}
-		flash_write_cmd (info, sector, 0, (uchar) cnt - 1);
-		while (cnt-- > 0) {
-			switch (info->portwidth) {
-			case FLASH_CFI_8BIT:
-				*dst.cp++ = *src.cp++;
-				break;
-			case FLASH_CFI_16BIT:
-				*dst.wp++ = *src.wp++;
-				break;
-			case FLASH_CFI_32BIT:
-				*dst.lp++ = *src.lp++;
-				break;
-			case FLASH_CFI_64BIT:
-				*dst.llp++ = *src.llp++;
-				break;
-			default:
-				return ERR_INVAL;
-				break;
-			}
-		}
-		flash_write_cmd (info, sector, 0,
-				 FLASH_CMD_WRITE_BUFFER_CONFIRM);
-		retcode =
-			flash_full_status_check (info, sector,
-						 info->buffer_write_tout,
-						 "buffer write");
+
+		flash_write_cmd (info, sector, 0, AMD_CMD_WRITE_BUFFER_CONFIRM);
+		retcode = flash_full_status_check (info, sector, info->buffer_write_tout,
+						   "buffer write");
+		return retcode;
+
+	default:
+		debug ("Unknown Command Set\n");
+		return ERR_INVAL;
 	}
-	flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS);
-	return retcode;
 }
 #endif /* CFG_FLASH_USE_BUFFER_WRITE */
 #endif /* CFG_FLASH_CFI */
diff --git a/drivers/i8042.c b/drivers/i8042.c
index 5f273a267d..22c2a4e3a0 100644
--- a/drivers/i8042.c
+++ b/drivers/i8042.c
@@ -12,7 +12,7 @@
  *
  * 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
+ * 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
@@ -33,7 +33,7 @@
 extern u8  gt_cpcidvi_in8(u32 offset);
 extern void gt_cpcidvi_out8(u32 offset, u8 data);
 
-#define in8(a)     gt_cpcidvi_in8(a)
+#define in8(a)	   gt_cpcidvi_in8(a)
 #define out8(a, b) gt_cpcidvi_out8(a,b)
 #endif
 
@@ -49,10 +49,10 @@ static int cursor_state = 0;
 
 /* locals */
 
-static int  kbd_input    = -1;          /* no input yet */
-static int  kbd_mapping  = KBD_US;      /* default US keyboard */
-static int  kbd_flags    = NORMAL;      /* after reset */
-static int  kbd_state    = 0;           /* unshift code */
+static int  kbd_input	 = -1;		/* no input yet */
+static int  kbd_mapping	 = KBD_US;	/* default US keyboard */
+static int  kbd_flags	 = NORMAL;	/* after reset */
+static int  kbd_state	 = 0;		/* unshift code */
 
 static void kbd_conv_char (unsigned char scan_code);
 static void kbd_led_set (void);
@@ -68,230 +68,230 @@ static int  kbd_reset (void);
 
 static unsigned char kbd_fct_map [144] =
     { /* kbd_fct_map table for scan code */
-    0,   AS,   AS,   AS,   AS,   AS,   AS,   AS, /* scan  0- 7 */
-   AS,   AS,   AS,   AS,   AS,   AS,   AS,   AS, /* scan  8- F */
-   AS,   AS,   AS,   AS,   AS,   AS,   AS,   AS, /* scan 10-17 */
-   AS,   AS,   AS,   AS,   AS,   CN,   AS,   AS, /* scan 18-1F */
-   AS,   AS,   AS,   AS,   AS,   AS,   AS,   AS, /* scan 20-27 */
-   AS,   AS,   SH,   AS,   AS,   AS,   AS,   AS, /* scan 28-2F */
-   AS,   AS,   AS,   AS,   AS,   AS,   SH,   AS, /* scan 30-37 */
-   AS,   AS,   CP,   0,    0,    0,    0,     0, /* scan 38-3F */
-    0,   0,    0,    0,    0,    NM,   ST,   ES, /* scan 40-47 */
-   ES,   ES,   ES,   ES,   ES,   ES,   ES,   ES, /* scan 48-4F */
-   ES,   ES,   ES,   ES,   0,    0,    AS,    0, /* scan 50-57 */
-    0,   0,    0,    0,    0,    0,    0,     0, /* scan 58-5F */
-    0,   0,    0,    0,    0,    0,    0,     0, /* scan 60-67 */
-    0,   0,    0,    0,    0,    0,    0,     0, /* scan 68-6F */
-   AS,   0,    0,    AS,   0,    0,    AS,    0, /* scan 70-77 */
-    0,   AS,   0,    0,    0,    AS,   0,     0, /* scan 78-7F */
-   AS,   CN,   AS,   AS,   AK,   ST,   EX,   EX, /* enhanced   */
-   AS,   EX,   EX,   AS,   EX,   AS,   EX,   EX  /* enhanced   */
+    0,	 AS,   AS,   AS,   AS,	 AS,   AS,   AS, /* scan  0- 7 */
+   AS,	 AS,   AS,   AS,   AS,	 AS,   AS,   AS, /* scan  8- F */
+   AS,	 AS,   AS,   AS,   AS,	 AS,   AS,   AS, /* scan 10-17 */
+   AS,	 AS,   AS,   AS,   AS,	 CN,   AS,   AS, /* scan 18-1F */
+   AS,	 AS,   AS,   AS,   AS,	 AS,   AS,   AS, /* scan 20-27 */
+   AS,	 AS,   SH,   AS,   AS,	 AS,   AS,   AS, /* scan 28-2F */
+   AS,	 AS,   AS,   AS,   AS,	 AS,   SH,   AS, /* scan 30-37 */
+   AS,	 AS,   CP,   0,	   0,	 0,    0,     0, /* scan 38-3F */
+    0,	 0,    0,    0,	   0,	 NM,   ST,   ES, /* scan 40-47 */
+   ES,	 ES,   ES,   ES,   ES,	 ES,   ES,   ES, /* scan 48-4F */
+   ES,	 ES,   ES,   ES,   0,	 0,    AS,    0, /* scan 50-57 */
+    0,	 0,    0,    0,	   0,	 0,    0,     0, /* scan 58-5F */
+    0,	 0,    0,    0,	   0,	 0,    0,     0, /* scan 60-67 */
+    0,	 0,    0,    0,	   0,	 0,    0,     0, /* scan 68-6F */
+   AS,	 0,    0,    AS,   0,	 0,    AS,    0, /* scan 70-77 */
+    0,	 AS,   0,    0,	   0,	 AS,   0,     0, /* scan 78-7F */
+   AS,	 CN,   AS,   AS,   AK,	 ST,   EX,   EX, /* enhanced   */
+   AS,	 EX,   EX,   AS,   EX,	 AS,   EX,   EX	 /* enhanced   */
     };
 
 static unsigned char kbd_key_map [2][5][144] =
     {
     { /* US keyboard */
     { /* unshift code */
-    0,  0x1b,   '1',   '2',   '3',   '4',   '5',   '6',    /* scan  0- 7 */
-  '7',   '8',   '9',   '0',   '-',   '=',  0x08,  '\t',    /* scan  8- F */
-  'q',   'w',   'e',   'r',   't',   'y',   'u',   'i',    /* scan 10-17 */
-  'o',   'p',   '[',   ']',  '\r',   CN,    'a',   's',    /* scan 18-1F */
-  'd',   'f',   'g',   'h',   'j',   'k',   'l',   ';',    /* scan 20-27 */
- '\'',   '`',   SH,   '\\',   'z',   'x',   'c',   'v',    /* scan 28-2F */
-  'b',   'n',   'm',   ',',   '.',   '/',   SH,    '*',    /* scan 30-37 */
-  ' ',   ' ',   CP,      0,     0,     0,     0,     0,    /* scan 38-3F */
-    0,     0,     0,     0,     0,   NM,    ST,    '7',    /* scan 40-47 */
-  '8',   '9',   '-',   '4',   '5',   '6',   '+',   '1',    /* scan 48-4F */
-  '2',   '3',   '0',   '.',     0,     0,     0,     0,    /* scan 50-57 */
-    0,     0,     0,     0,     0,     0,     0,     0,    /* scan 58-5F */
-    0,     0,     0,     0,     0,     0,     0,     0,    /* scan 60-67 */
-    0,     0,     0,     0,     0,     0,     0,     0,    /* scan 68-6F */
-    0,     0,     0,     0,     0,     0,     0,     0,    /* scan 70-77 */
-    0,     0,     0,     0,     0,     0,     0,     0,    /* scan 78-7F */
-  '\r',   CN,   '/',   '*',   ' ',    ST,   'F',   'A',    /* extended */
-    0,   'D',   'C',     0,   'B',     0,    '@',  'P'     /* extended */
+    0,	0x1b,	'1',   '2',   '3',   '4',   '5',   '6',	   /* scan  0- 7 */
+  '7',	 '8',	'9',   '0',   '-',   '=',  0x08,  '\t',	   /* scan  8- F */
+  'q',	 'w',	'e',   'r',   't',   'y',   'u',   'i',	   /* scan 10-17 */
+  'o',	 'p',	'[',   ']',  '\r',   CN,    'a',   's',	   /* scan 18-1F */
+  'd',	 'f',	'g',   'h',   'j',   'k',   'l',   ';',	   /* scan 20-27 */
+ '\'',	 '`',	SH,   '\\',   'z',   'x',   'c',   'v',	   /* scan 28-2F */
+  'b',	 'n',	'm',   ',',   '.',   '/',   SH,	   '*',	   /* scan 30-37 */
+  ' ',	 ' ',	CP,	 0,	0,     0,     0,     0,	   /* scan 38-3F */
+    0,	   0,	  0,	 0,	0,   NM,    ST,	   '7',	   /* scan 40-47 */
+  '8',	 '9',	'-',   '4',   '5',   '6',   '+',   '1',	   /* scan 48-4F */
+  '2',	 '3',	'0',   '.',	0,     0,     0,     0,	   /* scan 50-57 */
+    0,	   0,	  0,	 0,	0,     0,     0,     0,	   /* scan 58-5F */
+    0,	   0,	  0,	 0,	0,     0,     0,     0,	   /* scan 60-67 */
+    0,	   0,	  0,	 0,	0,     0,     0,     0,	   /* scan 68-6F */
+    0,	   0,	  0,	 0,	0,     0,     0,     0,	   /* scan 70-77 */
+    0,	   0,	  0,	 0,	0,     0,     0,     0,	   /* scan 78-7F */
+  '\r',	  CN,	'/',   '*',   ' ',    ST,   'F',   'A',	   /* extended */
+    0,	 'D',	'C',	 0,   'B',     0,    '@',  'P'	   /* extended */
     },
     { /* shift code */
-    0,  0x1b,   '!',   '@',   '#',   '$',   '%',   '^',    /* scan  0- 7 */
-  '&',   '*',   '(',   ')',   '_',   '+',  0x08,  '\t',    /* scan  8- F */
-  'Q',   'W',   'E',   'R',   'T',   'Y',   'U',   'I',    /* scan 10-17 */
-  'O',   'P',   '{',   '}',  '\r',   CN,    'A',   'S',    /* scan 18-1F */
-  'D',   'F',   'G',   'H',   'J',   'K',   'L',   ':',    /* scan 20-27 */
-  '"',   '~',   SH,    '|',   'Z',   'X',   'C',   'V',    /* scan 28-2F */
-  'B',   'N',   'M',   '<',   '>',   '?',   SH,    '*',    /* scan 30-37 */
-  ' ',   ' ',   CP,      0,     0,     0,     0,     0,    /* scan 38-3F */
-    0,     0,     0,     0,     0,   NM,    ST,    '7',    /* scan 40-47 */
-  '8',   '9',   '-',   '4',   '5',   '6',   '+',   '1',    /* scan 48-4F */
-  '2',   '3',   '0',   '.',     0,     0,     0,     0,    /* scan 50-57 */
-    0,     0,     0,     0,     0,     0,     0,     0,    /* scan 58-5F */
-    0,     0,     0,     0,     0,     0,     0,     0,    /* scan 60-67 */
-    0,     0,     0,     0,     0,     0,     0,     0,    /* scan 68-6F */
-    0,     0,     0,     0,     0,     0,     0,     0,    /* scan 70-77 */
-    0,     0,     0,     0,     0,     0,     0,     0,    /* scan 78-7F */
-  '\r',   CN,   '/',   '*',   ' ',    ST,   'F',   'A',    /* extended */
-    0,   'D',   'C',     0,   'B',     0,   '@',   'P'     /* extended */
+    0,	0x1b,	'!',   '@',   '#',   '$',   '%',   '^',	   /* scan  0- 7 */
+  '&',	 '*',	'(',   ')',   '_',   '+',  0x08,  '\t',	   /* scan  8- F */
+  'Q',	 'W',	'E',   'R',   'T',   'Y',   'U',   'I',	   /* scan 10-17 */
+  'O',	 'P',	'{',   '}',  '\r',   CN,    'A',   'S',	   /* scan 18-1F */
+  'D',	 'F',	'G',   'H',   'J',   'K',   'L',   ':',	   /* scan 20-27 */
+  '"',	 '~',	SH,    '|',   'Z',   'X',   'C',   'V',	   /* scan 28-2F */
+  'B',	 'N',	'M',   '<',   '>',   '?',   SH,	   '*',	   /* scan 30-37 */
+  ' ',	 ' ',	CP,	 0,	0,     0,     0,     0,	   /* scan 38-3F */
+    0,	   0,	  0,	 0,	0,   NM,    ST,	   '7',	   /* scan 40-47 */
+  '8',	 '9',	'-',   '4',   '5',   '6',   '+',   '1',	   /* scan 48-4F */
+  '2',	 '3',	'0',   '.',	0,     0,     0,     0,	   /* scan 50-57 */
+    0,	   0,	  0,	 0,	0,     0,     0,     0,	   /* scan 58-5F */
+    0,	   0,	  0,	 0,	0,     0,     0,     0,	   /* scan 60-67 */
+    0,	   0,	  0,	 0,	0,     0,     0,     0,	   /* scan 68-6F */
+    0,	   0,	  0,	 0,	0,     0,     0,     0,	   /* scan 70-77 */
+    0,	   0,	  0,	 0,	0,     0,     0,     0,	   /* scan 78-7F */
+  '\r',	  CN,	'/',   '*',   ' ',    ST,   'F',   'A',	   /* extended */
+    0,	 'D',	'C',	 0,   'B',     0,   '@',   'P'	   /* extended */
     },
     { /* control code */
- 0xff,  0x1b,  0xff,  0x00,  0xff,  0xff,  0xff,  0xff,    /* scan  0- 7 */
- 0x1e,  0xff,  0xff,  0xff,  0x1f,  0xff,  0xff,  '\t',    /* scan  8- F */
- 0x11,  0x17,  0x05,  0x12,  0x14,  0x19,  0x15,  0x09,    /* scan 10-17 */
- 0x0f,  0x10,  0x1b,  0x1d,  '\r',   CN,   0x01,  0x13,    /* scan 18-1F */
- 0x04,  0x06,  0x07,  0x08,  0x0a,  0x0b,  0x0c,  0xff,    /* scan 20-27 */
- 0xff,  0x1c,   SH,   0xff,  0x1a,  0x18,  0x03,  0x16,    /* scan 28-2F */
- 0x02,  0x0e,  0x0d,  0xff,  0xff,  0xff,   SH,   0xff,    /* scan 30-37 */
- 0xff,  0xff,   CP,   0xff,  0xff,  0xff,  0xff,  0xff,    /* scan 38-3F */
- 0xff,  0xff,  0xff,  0xff,  0xff,   NM,    ST,   0xff,    /* scan 40-47 */
- 0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,    /* scan 48-4F */
- 0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,    /* scan 50-57 */
- 0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,    /* scan 58-5F */
- 0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,    /* scan 60-67 */
- 0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,    /* scan 68-6F */
- 0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,    /* scan 70-77 */
- 0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,    /* scan 78-7F */
-  '\r',   CN,   '/',   '*',   ' ',    ST,  0xff,  0xff,    /* extended */
- 0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff     /* extended */
+ 0xff,	0x1b,  0xff,  0x00,  0xff,  0xff,  0xff,  0xff,	   /* scan  0- 7 */
+ 0x1e,	0xff,  0xff,  0xff,  0x1f,  0xff,  0xff,  '\t',	   /* scan  8- F */
+ 0x11,	0x17,  0x05,  0x12,  0x14,  0x19,  0x15,  0x09,	   /* scan 10-17 */
+ 0x0f,	0x10,  0x1b,  0x1d,  '\r',   CN,   0x01,  0x13,	   /* scan 18-1F */
+ 0x04,	0x06,  0x07,  0x08,  0x0a,  0x0b,  0x0c,  0xff,	   /* scan 20-27 */
+ 0xff,	0x1c,	SH,   0xff,  0x1a,  0x18,  0x03,  0x16,	   /* scan 28-2F */
+ 0x02,	0x0e,  0x0d,  0xff,  0xff,  0xff,   SH,	  0xff,	   /* scan 30-37 */
+ 0xff,	0xff,	CP,   0xff,  0xff,  0xff,  0xff,  0xff,	   /* scan 38-3F */
+ 0xff,	0xff,  0xff,  0xff,  0xff,   NM,    ST,	  0xff,	   /* scan 40-47 */
+ 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,	   /* scan 48-4F */
+ 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,	   /* scan 50-57 */
+ 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,	   /* scan 58-5F */
+ 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,	   /* scan 60-67 */
+ 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,	   /* scan 68-6F */
+ 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,	   /* scan 70-77 */
+ 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,	   /* scan 78-7F */
+  '\r',	  CN,	'/',   '*',   ' ',    ST,  0xff,  0xff,	   /* extended */
+ 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff	   /* extended */
     },
     { /* non numeric code */
-    0,  0x1b,   '1',   '2',   '3',   '4',   '5',   '6',    /* scan  0- 7 */
-  '7',   '8',   '9',   '0',   '-',   '=',  0x08,  '\t',    /* scan  8- F */
-  'q',   'w',   'e',   'r',   't',   'y',   'u',   'i',    /* scan 10-17 */
-  'o',   'p',   '[',   ']',  '\r',   CN,    'a',   's',    /* scan 18-1F */
-  'd',   'f',   'g',   'h',   'j',   'k',   'l',   ';',    /* scan 20-27 */
- '\'',   '`',   SH,   '\\',   'z',   'x',   'c',   'v',    /* scan 28-2F */
-  'b',   'n',   'm',   ',',   '.',   '/',   SH,    '*',    /* scan 30-37 */
-  ' ',   ' ',   CP,      0,     0,     0,     0,     0,    /* scan 38-3F */
-    0,     0,     0,     0,     0,   NM,    ST,    'w',    /* scan 40-47 */
-  'x',   'y',   'l',   't',   'u',   'v',   'm',   'q',    /* scan 48-4F */
-  'r',   's',   'p',   'n',     0,     0,     0,     0,    /* scan 50-57 */
-    0,     0,     0,     0,     0,     0,     0,     0,    /* scan 58-5F */
-    0,     0,     0,     0,     0,     0,     0,     0,    /* scan 60-67 */
-    0,     0,     0,     0,     0,     0,     0,     0,    /* scan 68-6F */
-    0,     0,     0,     0,     0,     0,     0,     0,    /* scan 70-77 */
-    0,     0,     0,     0,     0,     0,     0,     0,    /* scan 78-7F */
-  '\r',   CN,   '/',   '*',   ' ',    ST,   'F',   'A',    /* extended */
-    0,   'D',   'C',     0,   'B',     0,    '@',  'P'     /* extended */
+    0,	0x1b,	'1',   '2',   '3',   '4',   '5',   '6',	   /* scan  0- 7 */
+  '7',	 '8',	'9',   '0',   '-',   '=',  0x08,  '\t',	   /* scan  8- F */
+  'q',	 'w',	'e',   'r',   't',   'y',   'u',   'i',	   /* scan 10-17 */
+  'o',	 'p',	'[',   ']',  '\r',   CN,    'a',   's',	   /* scan 18-1F */
+  'd',	 'f',	'g',   'h',   'j',   'k',   'l',   ';',	   /* scan 20-27 */
+ '\'',	 '`',	SH,   '\\',   'z',   'x',   'c',   'v',	   /* scan 28-2F */
+  'b',	 'n',	'm',   ',',   '.',   '/',   SH,	   '*',	   /* scan 30-37 */
+  ' ',	 ' ',	CP,	 0,	0,     0,     0,     0,	   /* scan 38-3F */
+    0,	   0,	  0,	 0,	0,   NM,    ST,	   'w',	   /* scan 40-47 */
+  'x',	 'y',	'l',   't',   'u',   'v',   'm',   'q',	   /* scan 48-4F */
+  'r',	 's',	'p',   'n',	0,     0,     0,     0,	   /* scan 50-57 */
+    0,	   0,	  0,	 0,	0,     0,     0,     0,	   /* scan 58-5F */
+    0,	   0,	  0,	 0,	0,     0,     0,     0,	   /* scan 60-67 */
+    0,	   0,	  0,	 0,	0,     0,     0,     0,	   /* scan 68-6F */
+    0,	   0,	  0,	 0,	0,     0,     0,     0,	   /* scan 70-77 */
+    0,	   0,	  0,	 0,	0,     0,     0,     0,	   /* scan 78-7F */
+  '\r',	  CN,	'/',   '*',   ' ',    ST,   'F',   'A',	   /* extended */
+    0,	 'D',	'C',	 0,   'B',     0,    '@',  'P'	   /* extended */
     },
     { /* right alt mode - not used in US keyboard */
- 0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan  0 - 7 */
- 0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan  8 - F */
- 0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 10 -17 */
- 0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 18 -1F */
- 0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 20 -27 */
- 0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 28 -2F */
- 0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 30 -37 */
- 0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 38 -3F */
- 0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 40 -47 */
- 0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 48 -4F */
- 0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 50 -57 */
- 0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 58 -5F */
- 0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 60 -67 */
- 0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 68 -6F */
- 0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 70 -77 */
- 0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 78 -7F */
- 0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* extended    */
- 0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff  /* extended    */
+ 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan	 0 - 7 */
+ 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan	 8 - F */
+ 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 10 -17 */
+ 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 18 -1F */
+ 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 20 -27 */
+ 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 28 -2F */
+ 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 30 -37 */
+ 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 38 -3F */
+ 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 40 -47 */
+ 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 48 -4F */
+ 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 50 -57 */
+ 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 58 -5F */
+ 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 60 -67 */
+ 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 68 -6F */
+ 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 70 -77 */
+ 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 78 -7F */
+ 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* extended    */
+ 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff	/* extended    */
     }
     },
     { /* german keyboard */
     { /* unshift code */
-    0,  0x1b,   '1',   '2',   '3',   '4',   '5',   '6', /* scan  0- 7 */
-  '7',   '8',   '9',   '0',  0xe1,  '\'',  0x08,  '\t', /* scan  8- F */
-  'q',   'w',   'e',   'r',   't',   'z',   'u',   'i', /* scan 10-17 */
-  'o',   'p',  0x81,   '+',  '\r',   CN,    'a',   's', /* scan 18-1F */
-  'd',   'f',   'g',   'h',   'j',   'k',   'l',  0x94, /* scan 20-27 */
- 0x84,   '^',   SH,    '#',   'y',   'x',   'c',   'v', /* scan 28-2F */
-  'b',   'n',   'm',   ',',   '.',   '-',   SH,    '*', /* scan 30-37 */
-  ' ',   ' ',   CP,      0,     0,     0,     0,     0, /* scan 38-3F */
-    0,     0,     0,     0,     0,   NM,    ST,    '7', /* scan 40-47 */
-  '8',   '9',   '-',   '4',   '5',   '6',   '+',   '1', /* scan 48-4F */
-  '2',   '3',   '0',   ',',     0,     0,   '<',     0, /* scan 50-57 */
-    0,     0,     0,     0,     0,     0,     0,     0, /* scan 58-5F */
-    0,     0,     0,     0,     0,     0,     0,     0, /* scan 60-67 */
-    0,     0,     0,     0,     0,     0,     0,     0, /* scan 68-6F */
-    0,     0,     0,     0,     0,     0,     0,     0, /* scan 70-77 */
-    0,     0,     0,     0,     0,     0,     0,     0, /* scan 78-7F */
-  '\r',   CN,   '/',   '*',   ' ',    ST,   'F',   'A', /* extended */
-    0,   'D',   'C',     0,   'B',     0,    '@',  'P'  /* extended */
+    0,	0x1b,	'1',   '2',   '3',   '4',   '5',   '6', /* scan	 0- 7 */
+  '7',	 '8',	'9',   '0',  0xe1,  '\'',  0x08,  '\t', /* scan	 8- F */
+  'q',	 'w',	'e',   'r',   't',   'z',   'u',   'i', /* scan 10-17 */
+  'o',	 'p',  0x81,   '+',  '\r',   CN,    'a',   's', /* scan 18-1F */
+  'd',	 'f',	'g',   'h',   'j',   'k',   'l',  0x94, /* scan 20-27 */
+ 0x84,	 '^',	SH,    '#',   'y',   'x',   'c',   'v', /* scan 28-2F */
+  'b',	 'n',	'm',   ',',   '.',   '-',   SH,	   '*', /* scan 30-37 */
+  ' ',	 ' ',	CP,	 0,	0,     0,     0,     0, /* scan 38-3F */
+    0,	   0,	  0,	 0,	0,   NM,    ST,	   '7', /* scan 40-47 */
+  '8',	 '9',	'-',   '4',   '5',   '6',   '+',   '1', /* scan 48-4F */
+  '2',	 '3',	'0',   ',',	0,     0,   '<',     0, /* scan 50-57 */
+    0,	   0,	  0,	 0,	0,     0,     0,     0, /* scan 58-5F */
+    0,	   0,	  0,	 0,	0,     0,     0,     0, /* scan 60-67 */
+    0,	   0,	  0,	 0,	0,     0,     0,     0, /* scan 68-6F */
+    0,	   0,	  0,	 0,	0,     0,     0,     0, /* scan 70-77 */
+    0,	   0,	  0,	 0,	0,     0,     0,     0, /* scan 78-7F */
+  '\r',	  CN,	'/',   '*',   ' ',    ST,   'F',   'A', /* extended */
+    0,	 'D',	'C',	 0,   'B',     0,    '@',  'P'	/* extended */
     },
     { /* shift code */
-    0,  0x1b,   '!',   '"',  0x15,   '$',   '%',   '&', /* scan  0- 7 */
-  '/',   '(',   ')',   '=',   '?',   '`',  0x08,  '\t', /* scan  8- F */
-  'Q',   'W',   'E',   'R',   'T',   'Z',   'U',   'I', /* scan 10-17 */
-  'O',   'P',  0x9a,   '*',  '\r',   CN,    'A',   'S', /* scan 18-1F */
-  'D',   'F',   'G',   'H',   'J',   'K',   'L',  0x99, /* scan 20-27 */
- 0x8e,  0xf8,   SH,   '\'',   'Y',   'X',   'C',   'V', /* scan 28-2F */
-  'B',   'N',   'M',   ';',   ':',   '_',   SH,    '*', /* scan 30-37 */
-  ' ',   ' ',   CP,      0,     0,     0,     0,     0, /* scan 38-3F */
-    0,     0,     0,     0,     0,   NM,    ST,    '7', /* scan 40-47 */
-  '8',   '9',   '-',   '4',   '5',   '6',   '+',   '1', /* scan 48-4F */
-  '2',   '3',   '0',   ',',     0,     0,   '>',     0, /* scan 50-57 */
-    0,     0,     0,     0,     0,     0,     0,     0, /* scan 58-5F */
-    0,     0,     0,     0,     0,     0,     0,     0, /* scan 60-67 */
-    0,     0,     0,     0,     0,     0,     0,     0, /* scan 68-6F */
-    0,     0,     0,     0,     0,     0,     0,     0, /* scan 70-77 */
-    0,     0,     0,     0,     0,     0,     0,     0, /* scan 78-7F */
-  '\r',   CN,   '/',   '*',   ' ',    ST,   'F',   'A', /* extended */
-    0,   'D',   'C',     0,   'B',     0,   '@',   'P'  /* extended */
+    0,	0x1b,	'!',   '"',  0x15,   '$',   '%',   '&', /* scan	 0- 7 */
+  '/',	 '(',	')',   '=',   '?',   '`',  0x08,  '\t', /* scan	 8- F */
+  'Q',	 'W',	'E',   'R',   'T',   'Z',   'U',   'I', /* scan 10-17 */
+  'O',	 'P',  0x9a,   '*',  '\r',   CN,    'A',   'S', /* scan 18-1F */
+  'D',	 'F',	'G',   'H',   'J',   'K',   'L',  0x99, /* scan 20-27 */
+ 0x8e,	0xf8,	SH,   '\'',   'Y',   'X',   'C',   'V', /* scan 28-2F */
+  'B',	 'N',	'M',   ';',   ':',   '_',   SH,	   '*', /* scan 30-37 */
+  ' ',	 ' ',	CP,	 0,	0,     0,     0,     0, /* scan 38-3F */
+    0,	   0,	  0,	 0,	0,   NM,    ST,	   '7', /* scan 40-47 */
+  '8',	 '9',	'-',   '4',   '5',   '6',   '+',   '1', /* scan 48-4F */
+  '2',	 '3',	'0',   ',',	0,     0,   '>',     0, /* scan 50-57 */
+    0,	   0,	  0,	 0,	0,     0,     0,     0, /* scan 58-5F */
+    0,	   0,	  0,	 0,	0,     0,     0,     0, /* scan 60-67 */
+    0,	   0,	  0,	 0,	0,     0,     0,     0, /* scan 68-6F */
+    0,	   0,	  0,	 0,	0,     0,     0,     0, /* scan 70-77 */
+    0,	   0,	  0,	 0,	0,     0,     0,     0, /* scan 78-7F */
+  '\r',	  CN,	'/',   '*',   ' ',    ST,   'F',   'A', /* extended */
+    0,	 'D',	'C',	 0,   'B',     0,   '@',   'P'	/* extended */
     },
     { /* control code */
- 0xff,  0x1b,  0xff,  0x00,  0xff,  0xff,  0xff,  0xff, /* scan  0- 7 */
- 0x1e,  0xff,  0xff,  0xff,  0x1f,  0xff,  0xff,  '\t', /* scan  8- F */
- 0x11,  0x17,  0x05,  0x12,  0x14,  0x19,  0x15,  0x09, /* scan 10-17 */
- 0x0f,  0x10,  0x1b,  0x1d,  '\r',   CN,   0x01,  0x13, /* scan 18-1F */
- 0x04,  0x06,  0x07,  0x08,  0x0a,  0x0b,  0x0c,  0xff, /* scan 20-27 */
- 0xff,  0x1c,   SH,   0xff,  0x1a,  0x18,  0x03,  0x16, /* scan 28-2F */
- 0x02,  0x0e,  0x0d,  0xff,  0xff,  0xff,   SH,   0xff, /* scan 30-37 */
- 0xff,  0xff,   CP,   0xff,  0xff,  0xff,  0xff,  0xff, /* scan 38-3F */
- 0xff,  0xff,  0xff,  0xff,  0xff,   NM,    ST,   0xff, /* scan 40-47 */
- 0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 48-4F */
- 0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 50-57 */
- 0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 58-5F */
- 0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 60-67 */
- 0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 68-6F */
- 0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 70-77 */
- 0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 78-7F */
-  '\r',   CN,   '/',   '*',   ' ',    ST,  0xff,  0xff, /* extended */
- 0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff  /* extended */
+ 0xff,	0x1b,  0xff,  0x00,  0xff,  0xff,  0xff,  0xff, /* scan	 0- 7 */
+ 0x1e,	0xff,  0xff,  0xff,  0x1f,  0xff,  0xff,  '\t', /* scan	 8- F */
+ 0x11,	0x17,  0x05,  0x12,  0x14,  0x19,  0x15,  0x09, /* scan 10-17 */
+ 0x0f,	0x10,  0x1b,  0x1d,  '\r',   CN,   0x01,  0x13, /* scan 18-1F */
+ 0x04,	0x06,  0x07,  0x08,  0x0a,  0x0b,  0x0c,  0xff, /* scan 20-27 */
+ 0xff,	0x1c,	SH,   0xff,  0x1a,  0x18,  0x03,  0x16, /* scan 28-2F */
+ 0x02,	0x0e,  0x0d,  0xff,  0xff,  0xff,   SH,	  0xff, /* scan 30-37 */
+ 0xff,	0xff,	CP,   0xff,  0xff,  0xff,  0xff,  0xff, /* scan 38-3F */
+ 0xff,	0xff,  0xff,  0xff,  0xff,   NM,    ST,	  0xff, /* scan 40-47 */
+ 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 48-4F */
+ 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 50-57 */
+ 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 58-5F */
+ 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 60-67 */
+ 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 68-6F */
+ 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 70-77 */
+ 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 78-7F */
+  '\r',	  CN,	'/',   '*',   ' ',    ST,  0xff,  0xff, /* extended */
+ 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff	/* extended */
     },
     { /* non numeric code */
-    0,  0x1b,   '1',   '2',   '3',   '4',   '5',   '6', /* scan  0- 7 */
-  '7',   '8',   '9',   '0',  0xe1,  '\'',  0x08,  '\t', /* scan  8- F */
-  'q',   'w',   'e',   'r',   't',   'z',   'u',   'i', /* scan 10-17 */
-  'o',   'p',  0x81,   '+',  '\r',   CN,    'a',   's', /* scan 18-1F */
-  'd',   'f',   'g',   'h',   'j',   'k',   'l',  0x94, /* scan 20-27 */
- 0x84,   '^',   SH,      0,   'y',   'x',   'c',   'v', /* scan 28-2F */
-  'b',   'n',   'm',   ',',   '.',   '-',   SH,    '*', /* scan 30-37 */
-  ' ',   ' ',   CP,      0,     0,     0,     0,     0, /* scan 38-3F */
-    0,     0,     0,     0,     0,   NM,    ST,    'w', /* scan 40-47 */
-  'x',   'y',   'l',   't',   'u',   'v',   'm',   'q', /* scan 48-4F */
-  'r',   's',   'p',   'n',     0,     0,   '<',     0, /* scan 50-57 */
-    0,     0,     0,     0,     0,     0,     0,     0, /* scan 58-5F */
-    0,     0,     0,     0,     0,     0,     0,     0, /* scan 60-67 */
-    0,     0,     0,     0,     0,     0,     0,     0, /* scan 68-6F */
-    0,     0,     0,     0,     0,     0,     0,     0, /* scan 70-77 */
-    0,     0,     0,     0,     0,     0,     0,     0, /* scan 78-7F */
-  '\r',   CN,   '/',   '*',   ' ',    ST,   'F',   'A', /* extended */
-    0,   'D',   'C',     0,   'B',     0,    '@',  'P'  /* extended */
+    0,	0x1b,	'1',   '2',   '3',   '4',   '5',   '6', /* scan	 0- 7 */
+  '7',	 '8',	'9',   '0',  0xe1,  '\'',  0x08,  '\t', /* scan	 8- F */
+  'q',	 'w',	'e',   'r',   't',   'z',   'u',   'i', /* scan 10-17 */
+  'o',	 'p',  0x81,   '+',  '\r',   CN,    'a',   's', /* scan 18-1F */
+  'd',	 'f',	'g',   'h',   'j',   'k',   'l',  0x94, /* scan 20-27 */
+ 0x84,	 '^',	SH,	 0,   'y',   'x',   'c',   'v', /* scan 28-2F */
+  'b',	 'n',	'm',   ',',   '.',   '-',   SH,	   '*', /* scan 30-37 */
+  ' ',	 ' ',	CP,	 0,	0,     0,     0,     0, /* scan 38-3F */
+    0,	   0,	  0,	 0,	0,   NM,    ST,	   'w', /* scan 40-47 */
+  'x',	 'y',	'l',   't',   'u',   'v',   'm',   'q', /* scan 48-4F */
+  'r',	 's',	'p',   'n',	0,     0,   '<',     0, /* scan 50-57 */
+    0,	   0,	  0,	 0,	0,     0,     0,     0, /* scan 58-5F */
+    0,	   0,	  0,	 0,	0,     0,     0,     0, /* scan 60-67 */
+    0,	   0,	  0,	 0,	0,     0,     0,     0, /* scan 68-6F */
+    0,	   0,	  0,	 0,	0,     0,     0,     0, /* scan 70-77 */
+    0,	   0,	  0,	 0,	0,     0,     0,     0, /* scan 78-7F */
+  '\r',	  CN,	'/',   '*',   ' ',    ST,   'F',   'A', /* extended */
+    0,	 'D',	'C',	 0,   'B',     0,    '@',  'P'	/* extended */
     },
     { /* Right alt mode - is used in German keyboard */
- 0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan  0 - 7 */
-  '{',   '[',   ']',   '}',  '\\',  0xff,  0xff,  0xff, /* scan  8 - F */
-  '@',  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 10 -17 */
- 0xff,  0xff,  0xff,   '~',  0xff,  0xff,  0xff,  0xff, /* scan 18 -1F */
- 0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 20 -27 */
- 0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 28 -2F */
- 0xff,  0xff,  0xe6,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 30 -37 */
- 0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 38 -3F */
- 0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 40 -47 */
- 0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 48 -4F */
- 0xff,  0xff,  0xff,  0xff,  0xff,  0xff,   '|',  0xff, /* scan 50 -57 */
- 0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 58 -5F */
- 0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 60 -67 */
- 0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 68 -6F */
- 0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 70 -77 */
- 0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 78 -7F */
- 0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* extended    */
- 0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff  /* extended    */
+ 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan	 0 - 7 */
+  '{',	 '[',	']',   '}',  '\\',  0xff,  0xff,  0xff, /* scan	 8 - F */
+  '@',	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 10 -17 */
+ 0xff,	0xff,  0xff,   '~',  0xff,  0xff,  0xff,  0xff, /* scan 18 -1F */
+ 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 20 -27 */
+ 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 28 -2F */
+ 0xff,	0xff,  0xe6,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 30 -37 */
+ 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 38 -3F */
+ 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 40 -47 */
+ 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 48 -4F */
+ 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,   '|',  0xff, /* scan 50 -57 */
+ 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 58 -5F */
+ 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 60 -67 */
+ 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 68 -6F */
+ 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 70 -77 */
+ 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* scan 78 -7F */
+ 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff, /* extended    */
+ 0xff,	0xff,  0xff,  0xff,  0xff,  0xff,  0xff,  0xff	/* extended    */
     }
     }
     };
@@ -328,8 +328,8 @@ int i8042_kbd_init (void)
 
 #ifdef CONFIG_USE_CPCIDVI
     if ((penv = getenv ("console")) != NULL) {
-            if (strncmp (penv, "serial", 7) == 0) {
-	            return -1;
+	    if (strncmp (penv, "serial", 7) == 0) {
+		    return -1;
 	    }
     }
 #endif
@@ -345,9 +345,9 @@ int i8042_kbd_init (void)
     {
 	if (kbd_reset() == 0)
 	{
-	    kbd_mapping   = keymap;
-	    kbd_flags     = NORMAL;
-	    kbd_state     = 0;
+	    kbd_mapping	  = keymap;
+	    kbd_flags	  = NORMAL;
+	    kbd_state	  = 0;
 	    kbd_led_set();
 	    return 0;
 	    }
@@ -359,7 +359,7 @@ int i8042_kbd_init (void)
 /*******************************************************************************
  *
  * i8042_tstc - test if keyboard input is available
- *              option: cursor blinking if called in a loop
+ *		option: cursor blinking if called in a loop
  */
 int i8042_tstc (void)
 {
@@ -395,7 +395,7 @@ int i8042_tstc (void)
 /*******************************************************************************
  *
  * i8042_getc - wait till keyboard input is available
- *              option: turn on/off cursor while waiting
+ *		option: turn on/off cursor while waiting
  */
 int i8042_getc (void)
 {
@@ -448,8 +448,8 @@ static void kbd_conv_char (unsigned char scan_code)
     {
 	if (scan_code == 0xe1)
 	{
-	    kbd_flags ^= BRK;     /* reset the break flag */
-	    kbd_flags ^= E1;      /* bitwise EXOR with E1 flag */
+	    kbd_flags ^= BRK;	  /* reset the break flag */
+	    kbd_flags ^= E1;	  /* bitwise EXOR with E1 flag */
 	}
 	return;
     }
@@ -560,7 +560,7 @@ static void kbd_caps (unsigned char scan_code)
     if ((kbd_flags & BRK) == NORMAL)
     {
        kbd_flags ^= CAPS;
-       kbd_led_set ();            /* update keyboard LED */
+       kbd_led_set ();		  /* update keyboard LED */
     }
 }
 
@@ -573,7 +573,7 @@ static void kbd_num (unsigned char scan_code)
     {
        kbd_flags ^= NUM;
        kbd_state = (kbd_flags & NUM) ? AS : NM;
-       kbd_led_set ();            /* update keyboard LED */
+       kbd_led_set ();		  /* update keyboard LED */
     }
 }
 
@@ -585,7 +585,7 @@ static void kbd_scroll (unsigned char scan_code)
     if ((kbd_flags & BRK) == NORMAL)
     {
 	kbd_flags ^= STP;
-	kbd_led_set ();            /* update keyboard LED */
+	kbd_led_set ();		   /* update keyboard LED */
 	if (kbd_flags & STP)
 	    kbd_input = 0x13;
 	else
@@ -615,9 +615,9 @@ static void kbd_alt (unsigned char scan_code)
 static void kbd_led_set (void)
 {
     kbd_input_empty();
-    out8 (I8042_DATA_REG, 0xed);        /* SET LED command */
+    out8 (I8042_DATA_REG, 0xed);	/* SET LED command */
     kbd_input_empty();
-    out8 (I8042_DATA_REG, (kbd_flags & 0x7));    /* LED bits only */
+    out8 (I8042_DATA_REG, (kbd_flags & 0x7));	 /* LED bits only */
 }
 
 
diff --git a/drivers/nand/diskonchip.c b/drivers/nand/diskonchip.c
index 07e2549352..afaae834f1 100644
--- a/drivers/nand/diskonchip.c
+++ b/drivers/nand/diskonchip.c
@@ -20,7 +20,11 @@
  */
 
 #include <common.h>
-#ifdef CONFIG_NEW_NAND_CODE
+
+#ifdef CFG_NAND_LEGACY
+#error CFG_NAND_LEGACY defined in a file not using the legacy NAND support!
+#endif
+
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/sched.h>
@@ -1782,4 +1786,3 @@ module_exit(cleanup_nanddoc);
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
 MODULE_DESCRIPTION("M-Systems DiskOnChip 2000, Millennium and Millennium Plus device driver\n");
-#endif /* CONFIG_NEW_NAND_CODE */
diff --git a/drivers/nand/nand.c b/drivers/nand/nand.c
index bc85005b2a..dd80026fe0 100644
--- a/drivers/nand/nand.c
+++ b/drivers/nand/nand.c
@@ -23,7 +23,10 @@
 
 #include <common.h>
 
-#ifdef CONFIG_NEW_NAND_CODE
+#ifdef CFG_NAND_LEGACY
+#error CFG_NAND_LEGACY defined in a file not using the legacy NAND support!
+#endif
+
 #if (CONFIG_COMMANDS & CFG_CMD_NAND)
 
 #include <nand.h>
@@ -72,5 +75,3 @@ void nand_init(void)
 }
 
 #endif
-#endif /* CONFIG_NEW_NAND_CODE */
-
diff --git a/drivers/nand/nand_base.c b/drivers/nand/nand_base.c
index d6c84fb533..d91d90bfec 100644
--- a/drivers/nand/nand_base.c
+++ b/drivers/nand/nand_base.c
@@ -71,7 +71,10 @@
 #endif
 
 #include <common.h>
-#ifdef CONFIG_NEW_NAND_CODE
+
+#ifdef CFG_NAND_LEGACY
+#error CFG_NAND_LEGACY defined in a file not using the legacy NAND support!
+#endif
 
 #if (CONFIG_COMMANDS & CFG_CMD_NAND)
 
@@ -864,10 +867,10 @@ static int nand_wait(struct mtd_info *mtd, struct nand_chip *this, int state)
 				break;
 		}
 	}
-
-	/* XXX nand device 1 on dave (PPChameleonEVB) needs more time */
+#ifdef PPCHAMELON_NAND_TIMER_HACK
 	reset_timer();
 	while (get_timer(0) < 10);
+#endif /*  PPCHAMELON_NAND_TIMER_HACK */
 
 	return this->read_byte(mtd);
 }
@@ -2663,5 +2666,3 @@ void nand_release (struct mtd_info *mtd)
 }
 
 #endif
-#endif /* CONFIG_NEW_NAND_CODE */
-
diff --git a/drivers/nand/nand_bbt.c b/drivers/nand/nand_bbt.c
index f4813088b5..ac168723e2 100644
--- a/drivers/nand/nand_bbt.c
+++ b/drivers/nand/nand_bbt.c
@@ -54,7 +54,10 @@
 
 #include <common.h>
 
-#ifdef CONFIG_NEW_NAND_CODE
+#ifdef CFG_NAND_LEGACY
+#error CFG_NAND_LEGACY defined in a file not using the legacy NAND support!
+#endif
+
 #if (CONFIG_COMMANDS & CFG_CMD_NAND)
 
 #include <malloc.h>
@@ -1051,5 +1054,3 @@ int nand_isbad_bbt (struct mtd_info *mtd, loff_t offs, int allowbbt)
 }
 
 #endif
-#endif /* CONFIG_NEW_NAND_CODE */
-
diff --git a/drivers/nand/nand_ecc.c b/drivers/nand/nand_ecc.c
index 4e610c1123..e0d0e8bcc4 100644
--- a/drivers/nand/nand_ecc.c
+++ b/drivers/nand/nand_ecc.c
@@ -37,7 +37,10 @@
 
 #include <common.h>
 
-#ifdef CONFIG_NEW_NAND_CODE
+#ifdef CFG_NAND_LEGACY
+#error CFG_NAND_LEGACY defined in a file not using the legacy NAND support!
+#endif
+
 #if (CONFIG_COMMANDS & CFG_CMD_NAND)
 
 #include<linux/mtd/mtd.h>
@@ -243,5 +246,3 @@ int nand_correct_data(struct mtd_info *mtd, u_char *dat, u_char *read_ecc, u_cha
 }
 
 #endif	/* CONFIG_COMMANDS & CFG_CMD_NAND */
-#endif /* CONFIG_NEW_NAND_CODE */
-
diff --git a/drivers/nand/nand_ids.c b/drivers/nand/nand_ids.c
index d355326107..3d4d372f17 100644
--- a/drivers/nand/nand_ids.c
+++ b/drivers/nand/nand_ids.c
@@ -13,7 +13,10 @@
 
 #include <common.h>
 
-#ifdef CONFIG_NEW_NAND_CODE
+#ifdef CFG_NAND_LEGACY
+#error CFG_NAND_LEGACY defined in a file not using the legacy NAND support!
+#endif
+
 #if (CONFIG_COMMANDS & CFG_CMD_NAND)
 
 #include <linux/mtd/nand.h>
@@ -127,5 +130,3 @@ struct nand_manufacturers nand_manuf_ids[] = {
 	{0x0, "Unknown"}
 };
 #endif
-#endif /* CONFIG_NEW_NAND_CODE */
-
diff --git a/drivers/nand_legacy/Makefile b/drivers/nand_legacy/Makefile
new file mode 100644
index 0000000000..7e2cf66730
--- /dev/null
+++ b/drivers/nand_legacy/Makefile
@@ -0,0 +1,16 @@
+include $(TOPDIR)/config.mk
+
+LIB := libnand_legacy.a
+
+OBJS := nand_legacy.o
+all:	$(LIB)
+
+$(LIB):	$(OBJS)
+	$(AR) crv $@ $(OBJS)
+
+#########################################################################
+
+.depend:	Makefile $(OBJS:.o=.c)
+		$(CC) -M $(CFLAGS) $(OBJS:.o=.c) > $@
+
+sinclude .depend
diff --git a/drivers/nand_legacy/nand_legacy.c b/drivers/nand_legacy/nand_legacy.c
new file mode 100644
index 0000000000..3989ca2a2d
--- /dev/null
+++ b/drivers/nand_legacy/nand_legacy.c
@@ -0,0 +1,1615 @@
+/*
+ * (C) 2006 Denx
+ * Driver for NAND support, Rick Bronson
+ * borrowed heavily from:
+ * (c) 1999 Machine Vision Holdings, Inc.
+ * (c) 1999, 2000 David Woodhouse <dwmw2@infradead.org>
+ *
+ * Added 16-bit nand support
+ * (C) 2004 Texas Instruments
+ */
+
+#include <common.h>
+
+#ifndef CFG_NAND_LEGACY
+#error CFG_NAND_LEGACY not defined in a file using the legacy NAND support!
+#endif
+
+#include <command.h>
+#include <malloc.h>
+#include <asm/io.h>
+#include <watchdog.h>
+
+#ifdef CONFIG_SHOW_BOOT_PROGRESS
+# include <status_led.h>
+# define SHOW_BOOT_PROGRESS(arg)	show_boot_progress(arg)
+#else
+# define SHOW_BOOT_PROGRESS(arg)
+#endif
+
+#if (CONFIG_COMMANDS & CFG_CMD_NAND)
+
+#include <linux/mtd/nand_legacy.h>
+#include <linux/mtd/nand_ids.h>
+#include <jffs2/jffs2.h>
+
+#ifdef CONFIG_OMAP1510
+void archflashwp(void *archdata, int wp);
+#endif
+
+#define ROUND_DOWN(value,boundary)      ((value) & (~((boundary)-1)))
+
+#undef	PSYCHO_DEBUG
+#undef	NAND_DEBUG
+
+/* ****************** WARNING *********************
+ * When ALLOW_ERASE_BAD_DEBUG is non-zero the erase command will
+ * erase (or at least attempt to erase) blocks that are marked
+ * bad. This can be very handy if you are _sure_ that the block
+ * is OK, say because you marked a good block bad to test bad
+ * block handling and you are done testing, or if you have
+ * accidentally marked blocks bad.
+ *
+ * Erasing factory marked bad blocks is a _bad_ idea. If the
+ * erase succeeds there is no reliable way to find them again,
+ * and attempting to program or erase bad blocks can affect
+ * the data in _other_ (good) blocks.
+ */
+#define	 ALLOW_ERASE_BAD_DEBUG 0
+
+#define CONFIG_MTD_NAND_ECC  /* enable ECC */
+#define CONFIG_MTD_NAND_ECC_JFFS2
+
+/* bits for nand_legacy_rw() `cmd'; or together as needed */
+#define NANDRW_READ	0x01
+#define NANDRW_WRITE	0x00
+#define NANDRW_JFFS2	0x02
+#define NANDRW_JFFS2_SKIP	0x04
+
+
+/*
+ * Exported variables etc.
+ */
+
+/* Definition of the out of band configuration structure */
+struct nand_oob_config {
+	/* position of ECC bytes inside oob */
+	int ecc_pos[6];
+	/* position of  bad blk flag inside oob -1 = inactive */
+	int badblock_pos;
+	/* position of ECC valid flag inside oob -1 = inactive */
+	int eccvalid_pos;
+} oob_config = { {0}, 0, 0};
+
+struct nand_chip nand_dev_desc[CFG_MAX_NAND_DEVICE] = {{0}};
+
+int curr_device = -1; /* Current NAND Device */
+
+
+/*
+ * Exported functionss
+ */
+int nand_legacy_erase(struct nand_chip* nand, size_t ofs,
+		     size_t len, int clean);
+int nand_legacy_rw(struct nand_chip* nand, int cmd,
+		  size_t start, size_t len,
+		  size_t * retlen, u_char * buf);
+void nand_print(struct nand_chip *nand);
+void nand_print_bad(struct nand_chip *nand);
+int nand_read_oob(struct nand_chip* nand, size_t ofs, size_t len,
+		 size_t * retlen, u_char * buf);
+int nand_write_oob(struct nand_chip* nand, size_t ofs, size_t len,
+		 size_t * retlen, const u_char * buf);
+
+/*
+ * Internals
+ */
+static int NanD_WaitReady(struct nand_chip *nand, int ale_wait);
+static int nand_read_ecc(struct nand_chip *nand, size_t start, size_t len,
+		 size_t * retlen, u_char *buf, u_char *ecc_code);
+static int nand_write_ecc (struct nand_chip* nand, size_t to, size_t len,
+			   size_t * retlen, const u_char * buf,
+			   u_char * ecc_code);
+#ifdef CONFIG_MTD_NAND_ECC
+static int nand_correct_data (u_char *dat, u_char *read_ecc, u_char *calc_ecc);
+static void nand_calculate_ecc (const u_char *dat, u_char *ecc_code);
+#endif
+
+
+/*
+ *
+ * Function definitions
+ *
+ */
+
+/* returns 0 if block containing pos is OK:
+ *		valid erase block and
+ *		not marked bad, or no bad mark position is specified
+ * returns 1 if marked bad or otherwise invalid
+ */
+static int check_block (struct nand_chip *nand, unsigned long pos)
+{
+	size_t retlen;
+	uint8_t oob_data;
+	uint16_t oob_data16[6];
+	int page0 = pos & (-nand->erasesize);
+	int page1 = page0 + nand->oobblock;
+	int badpos = oob_config.badblock_pos;
+
+	if (pos >= nand->totlen)
+		return 1;
+
+	if (badpos < 0)
+		return 0;	/* no way to check, assume OK */
+
+	if (nand->bus16) {
+		if (nand_read_oob(nand, (page0 + 0), 12, &retlen, (uint8_t *)oob_data16)
+		    || (oob_data16[2] & 0xff00) != 0xff00)
+			return 1;
+		if (nand_read_oob(nand, (page1 + 0), 12, &retlen, (uint8_t *)oob_data16)
+		    || (oob_data16[2] & 0xff00) != 0xff00)
+			return 1;
+	} else {
+		/* Note - bad block marker can be on first or second page */
+		if (nand_read_oob(nand, page0 + badpos, 1, &retlen, (unsigned char *)&oob_data)
+		    || oob_data != 0xff
+		    || nand_read_oob (nand, page1 + badpos, 1, &retlen, (unsigned char *)&oob_data)
+		    || oob_data != 0xff)
+			return 1;
+	}
+
+	return 0;
+}
+
+/* print bad blocks in NAND flash */
+void nand_print_bad(struct nand_chip* nand)
+{
+	unsigned long pos;
+
+	for (pos = 0; pos < nand->totlen; pos += nand->erasesize) {
+		if (check_block(nand, pos))
+			printf(" 0x%8.8lx\n", pos);
+	}
+	puts("\n");
+}
+
+/* cmd: 0: NANDRW_WRITE			write, fail on bad block
+ *	1: NANDRW_READ			read, fail on bad block
+ *	2: NANDRW_WRITE | NANDRW_JFFS2	write, skip bad blocks
+ *	3: NANDRW_READ | NANDRW_JFFS2	read, data all 0xff for bad blocks
+ *      7: NANDRW_READ | NANDRW_JFFS2 | NANDRW_JFFS2_SKIP read, skip bad blocks
+ */
+int nand_legacy_rw (struct nand_chip* nand, int cmd,
+		   size_t start, size_t len,
+		   size_t * retlen, u_char * buf)
+{
+	int ret = 0, n, total = 0;
+	char eccbuf[6];
+	/* eblk (once set) is the start of the erase block containing the
+	 * data being processed.
+	 */
+	unsigned long eblk = ~0;	/* force mismatch on first pass */
+	unsigned long erasesize = nand->erasesize;
+
+	while (len) {
+		if ((start & (-erasesize)) != eblk) {
+			/* have crossed into new erase block, deal with
+			 * it if it is sure marked bad.
+			 */
+			eblk = start & (-erasesize); /* start of block */
+			if (check_block(nand, eblk)) {
+				if (cmd == (NANDRW_READ | NANDRW_JFFS2)) {
+					while (len > 0 &&
+					       start - eblk < erasesize) {
+						*(buf++) = 0xff;
+						++start;
+						++total;
+						--len;
+					}
+					continue;
+				} else if (cmd == (NANDRW_READ | NANDRW_JFFS2 | NANDRW_JFFS2_SKIP)) {
+					start += erasesize;
+					continue;
+				} else if (cmd == (NANDRW_WRITE | NANDRW_JFFS2)) {
+					/* skip bad block */
+					start += erasesize;
+					continue;
+				} else {
+					ret = 1;
+					break;
+				}
+			}
+		}
+		/* The ECC will not be calculated correctly if
+		   less than 512 is written or read */
+		/* Is request at least 512 bytes AND it starts on a proper boundry */
+		if((start != ROUND_DOWN(start, 0x200)) || (len < 0x200))
+			printf("Warning block writes should be at least 512 bytes and start on a 512 byte boundry\n");
+
+		if (cmd & NANDRW_READ) {
+			ret = nand_read_ecc(nand, start,
+					   min(len, eblk + erasesize - start),
+					   (size_t *)&n, (u_char*)buf, (u_char *)eccbuf);
+		} else {
+			ret = nand_write_ecc(nand, start,
+					    min(len, eblk + erasesize - start),
+					    (size_t *)&n, (u_char*)buf, (u_char *)eccbuf);
+		}
+
+		if (ret)
+			break;
+
+		start  += n;
+		buf   += n;
+		total += n;
+		len   -= n;
+	}
+	if (retlen)
+		*retlen = total;
+
+	return ret;
+}
+
+void nand_print(struct nand_chip *nand)
+{
+	if (nand->numchips > 1) {
+		printf("%s at 0x%lx,\n"
+		       "\t  %d chips %s, size %d MB, \n"
+		       "\t  total size %ld MB, sector size %ld kB\n",
+		       nand->name, nand->IO_ADDR, nand->numchips,
+		       nand->chips_name, 1 << (nand->chipshift - 20),
+		       nand->totlen >> 20, nand->erasesize >> 10);
+	}
+	else {
+		printf("%s at 0x%lx (", nand->chips_name, nand->IO_ADDR);
+		print_size(nand->totlen, ", ");
+		print_size(nand->erasesize, " sector)\n");
+	}
+}
+
+/* ------------------------------------------------------------------------- */
+
+static int NanD_WaitReady(struct nand_chip *nand, int ale_wait)
+{
+	/* This is inline, to optimise the common case, where it's ready instantly */
+	int ret = 0;
+
+#ifdef NAND_NO_RB	/* in config file, shorter delays currently wrap accesses */
+	if(ale_wait)
+		NAND_WAIT_READY(nand);	/* do the worst case 25us wait */
+	else
+		udelay(10);
+#else	/* has functional r/b signal */
+	NAND_WAIT_READY(nand);
+#endif
+	return ret;
+}
+
+/* NanD_Command: Send a flash command to the flash chip */
+
+static inline int NanD_Command(struct nand_chip *nand, unsigned char command)
+{
+	unsigned long nandptr = nand->IO_ADDR;
+
+	/* Assert the CLE (Command Latch Enable) line to the flash chip */
+	NAND_CTL_SETCLE(nandptr);
+
+	/* Send the command */
+	WRITE_NAND_COMMAND(command, nandptr);
+
+	/* Lower the CLE line */
+	NAND_CTL_CLRCLE(nandptr);
+
+#ifdef NAND_NO_RB
+	if(command == NAND_CMD_RESET){
+		u_char ret_val;
+		NanD_Command(nand, NAND_CMD_STATUS);
+		do {
+			ret_val = READ_NAND(nandptr);/* wait till ready */
+		} while((ret_val & 0x40) != 0x40);
+	}
+#endif
+	return NanD_WaitReady(nand, 0);
+}
+
+/* NanD_Address: Set the current address for the flash chip */
+
+static int NanD_Address(struct nand_chip *nand, int numbytes, unsigned long ofs)
+{
+	unsigned long nandptr;
+	int i;
+
+	nandptr = nand->IO_ADDR;
+
+	/* Assert the ALE (Address Latch Enable) line to the flash chip */
+	NAND_CTL_SETALE(nandptr);
+
+	/* Send the address */
+	/* Devices with 256-byte page are addressed as:
+	 * Column (bits 0-7), Page (bits 8-15, 16-23, 24-31)
+	 * there is no device on the market with page256
+	 * and more than 24 bits.
+	 * Devices with 512-byte page are addressed as:
+	 * Column (bits 0-7), Page (bits 9-16, 17-24, 25-31)
+	 * 25-31 is sent only if the chip support it.
+	 * bit 8 changes the read command to be sent
+	 * (NAND_CMD_READ0 or NAND_CMD_READ1).
+	 */
+
+	if (numbytes == ADDR_COLUMN || numbytes == ADDR_COLUMN_PAGE)
+		WRITE_NAND_ADDRESS(ofs, nandptr);
+
+	ofs = ofs >> nand->page_shift;
+
+	if (numbytes == ADDR_PAGE || numbytes == ADDR_COLUMN_PAGE) {
+		for (i = 0; i < nand->pageadrlen; i++, ofs = ofs >> 8) {
+			WRITE_NAND_ADDRESS(ofs, nandptr);
+		}
+	}
+
+	/* Lower the ALE line */
+	NAND_CTL_CLRALE(nandptr);
+
+	/* Wait for the chip to respond */
+	return NanD_WaitReady(nand, 1);
+}
+
+/* NanD_SelectChip: Select a given flash chip within the current floor */
+
+static inline int NanD_SelectChip(struct nand_chip *nand, int chip)
+{
+	/* Wait for it to be ready */
+	return NanD_WaitReady(nand, 0);
+}
+
+/* NanD_IdentChip: Identify a given NAND chip given {floor,chip} */
+
+static int NanD_IdentChip(struct nand_chip *nand, int floor, int chip)
+{
+	int mfr, id, i;
+
+	NAND_ENABLE_CE(nand);  /* set pin low */
+	/* Reset the chip */
+	if (NanD_Command(nand, NAND_CMD_RESET)) {
+#ifdef NAND_DEBUG
+		printf("NanD_Command (reset) for %d,%d returned true\n",
+		       floor, chip);
+#endif
+		NAND_DISABLE_CE(nand);  /* set pin high */
+		return 0;
+	}
+
+	/* Read the NAND chip ID: 1. Send ReadID command */
+	if (NanD_Command(nand, NAND_CMD_READID)) {
+#ifdef NAND_DEBUG
+		printf("NanD_Command (ReadID) for %d,%d returned true\n",
+		       floor, chip);
+#endif
+		NAND_DISABLE_CE(nand);  /* set pin high */
+		return 0;
+	}
+
+	/* Read the NAND chip ID: 2. Send address byte zero */
+	NanD_Address(nand, ADDR_COLUMN, 0);
+
+	/* Read the manufacturer and device id codes from the device */
+
+	mfr = READ_NAND(nand->IO_ADDR);
+
+	id = READ_NAND(nand->IO_ADDR);
+
+	NAND_DISABLE_CE(nand);  /* set pin high */
+
+#ifdef NAND_DEBUG
+	printf("NanD_Command (ReadID) got %x %x\n", mfr, id);
+#endif
+	if (mfr == 0xff || mfr == 0) {
+		/* No response - return failure */
+		return 0;
+	}
+
+	/* Check it's the same as the first chip we identified.
+	 * M-Systems say that any given nand_chip device should only
+	 * contain _one_ type of flash part, although that's not a
+	 * hardware restriction. */
+	if (nand->mfr) {
+		if (nand->mfr == mfr && nand->id == id) {
+			return 1;	/* This is another the same the first */
+		} else {
+			printf("Flash chip at floor %d, chip %d is different:\n",
+			       floor, chip);
+		}
+	}
+
+	/* Print and store the manufacturer and ID codes. */
+	for (i = 0; nand_flash_ids[i].name != NULL; i++) {
+		if (mfr == nand_flash_ids[i].manufacture_id &&
+		    id == nand_flash_ids[i].model_id) {
+#ifdef NAND_DEBUG
+			printf("Flash chip found:\n\t Manufacturer ID: 0x%2.2X, "
+			       "Chip ID: 0x%2.2X (%s)\n", mfr, id,
+			       nand_flash_ids[i].name);
+#endif
+			if (!nand->mfr) {
+				nand->mfr = mfr;
+				nand->id = id;
+				nand->chipshift =
+				    nand_flash_ids[i].chipshift;
+				nand->page256 = nand_flash_ids[i].page256;
+				nand->eccsize = 256;
+				if (nand->page256) {
+					nand->oobblock = 256;
+					nand->oobsize = 8;
+					nand->page_shift = 8;
+				} else {
+					nand->oobblock = 512;
+					nand->oobsize = 16;
+					nand->page_shift = 9;
+				}
+				nand->pageadrlen = nand_flash_ids[i].pageadrlen;
+				nand->erasesize  = nand_flash_ids[i].erasesize;
+				nand->chips_name = nand_flash_ids[i].name;
+				nand->bus16	 = nand_flash_ids[i].bus16;
+ 				return 1;
+			}
+			return 0;
+		}
+	}
+
+
+#ifdef NAND_DEBUG
+	/* We haven't fully identified the chip. Print as much as we know. */
+	printf("Unknown flash chip found: %2.2X %2.2X\n",
+	       id, mfr);
+#endif
+
+	return 0;
+}
+
+/* NanD_ScanChips: Find all NAND chips present in a nand_chip, and identify them */
+
+static void NanD_ScanChips(struct nand_chip *nand)
+{
+	int floor, chip;
+	int numchips[NAND_MAX_FLOORS];
+	int maxchips = NAND_MAX_CHIPS;
+	int ret = 1;
+
+	nand->numchips = 0;
+	nand->mfr = 0;
+	nand->id = 0;
+
+
+	/* For each floor, find the number of valid chips it contains */
+	for (floor = 0; floor < NAND_MAX_FLOORS; floor++) {
+		ret = 1;
+		numchips[floor] = 0;
+		for (chip = 0; chip < maxchips && ret != 0; chip++) {
+
+			ret = NanD_IdentChip(nand, floor, chip);
+			if (ret) {
+				numchips[floor]++;
+				nand->numchips++;
+			}
+		}
+	}
+
+	/* If there are none at all that we recognise, bail */
+	if (!nand->numchips) {
+#ifdef NAND_DEBUG
+		puts ("No NAND flash chips recognised.\n");
+#endif
+		return;
+	}
+
+	/* Allocate an array to hold the information for each chip */
+	nand->chips = malloc(sizeof(struct Nand) * nand->numchips);
+	if (!nand->chips) {
+		puts ("No memory for allocating chip info structures\n");
+		return;
+	}
+
+	ret = 0;
+
+	/* Fill out the chip array with {floor, chipno} for each
+	 * detected chip in the device. */
+	for (floor = 0; floor < NAND_MAX_FLOORS; floor++) {
+		for (chip = 0; chip < numchips[floor]; chip++) {
+			nand->chips[ret].floor = floor;
+			nand->chips[ret].chip = chip;
+			nand->chips[ret].curadr = 0;
+			nand->chips[ret].curmode = 0x50;
+			ret++;
+		}
+	}
+
+	/* Calculate and print the total size of the device */
+	nand->totlen = nand->numchips * (1 << nand->chipshift);
+
+#ifdef NAND_DEBUG
+	printf("%d flash chips found. Total nand_chip size: %ld MB\n",
+	       nand->numchips, nand->totlen >> 20);
+#endif
+}
+
+/* we need to be fast here, 1 us per read translates to 1 second per meg */
+static void NanD_ReadBuf (struct nand_chip *nand, u_char * data_buf, int cntr)
+{
+	unsigned long nandptr = nand->IO_ADDR;
+
+	NanD_Command (nand, NAND_CMD_READ0);
+
+	if (nand->bus16) {
+		u16 val;
+
+		while (cntr >= 16) {
+			val = READ_NAND (nandptr);
+			*data_buf++ = val & 0xff;
+			*data_buf++ = val >> 8;
+			val = READ_NAND (nandptr);
+			*data_buf++ = val & 0xff;
+			*data_buf++ = val >> 8;
+			val = READ_NAND (nandptr);
+			*data_buf++ = val & 0xff;
+			*data_buf++ = val >> 8;
+			val = READ_NAND (nandptr);
+			*data_buf++ = val & 0xff;
+			*data_buf++ = val >> 8;
+			val = READ_NAND (nandptr);
+			*data_buf++ = val & 0xff;
+			*data_buf++ = val >> 8;
+			val = READ_NAND (nandptr);
+			*data_buf++ = val & 0xff;
+			*data_buf++ = val >> 8;
+			val = READ_NAND (nandptr);
+			*data_buf++ = val & 0xff;
+			*data_buf++ = val >> 8;
+			val = READ_NAND (nandptr);
+			*data_buf++ = val & 0xff;
+			*data_buf++ = val >> 8;
+			cntr -= 16;
+		}
+
+		while (cntr > 0) {
+			val = READ_NAND (nandptr);
+			*data_buf++ = val & 0xff;
+			*data_buf++ = val >> 8;
+			cntr -= 2;
+		}
+	} else {
+		while (cntr >= 16) {
+			*data_buf++ = READ_NAND (nandptr);
+			*data_buf++ = READ_NAND (nandptr);
+			*data_buf++ = READ_NAND (nandptr);
+			*data_buf++ = READ_NAND (nandptr);
+			*data_buf++ = READ_NAND (nandptr);
+			*data_buf++ = READ_NAND (nandptr);
+			*data_buf++ = READ_NAND (nandptr);
+			*data_buf++ = READ_NAND (nandptr);
+			*data_buf++ = READ_NAND (nandptr);
+			*data_buf++ = READ_NAND (nandptr);
+			*data_buf++ = READ_NAND (nandptr);
+			*data_buf++ = READ_NAND (nandptr);
+			*data_buf++ = READ_NAND (nandptr);
+			*data_buf++ = READ_NAND (nandptr);
+			*data_buf++ = READ_NAND (nandptr);
+			*data_buf++ = READ_NAND (nandptr);
+			cntr -= 16;
+		}
+
+		while (cntr > 0) {
+			*data_buf++ = READ_NAND (nandptr);
+			cntr--;
+		}
+	}
+}
+
+/*
+ * NAND read with ECC
+ */
+static int nand_read_ecc(struct nand_chip *nand, size_t start, size_t len,
+		 size_t * retlen, u_char *buf, u_char *ecc_code)
+{
+	int col, page;
+	int ecc_status = 0;
+#ifdef CONFIG_MTD_NAND_ECC
+	int j;
+	int ecc_failed = 0;
+	u_char *data_poi;
+	u_char ecc_calc[6];
+#endif
+
+	/* Do not allow reads past end of device */
+	if ((start + len) > nand->totlen) {
+		printf ("%s: Attempt read beyond end of device %x %x %x\n",
+			__FUNCTION__, (uint) start, (uint) len, (uint) nand->totlen);
+		*retlen = 0;
+		return -1;
+	}
+
+	/* First we calculate the starting page */
+	/*page = shr(start, nand->page_shift);*/
+	page = start >> nand->page_shift;
+
+	/* Get raw starting column */
+	col = start & (nand->oobblock - 1);
+
+	/* Initialize return value */
+	*retlen = 0;
+
+	/* Select the NAND device */
+	NAND_ENABLE_CE(nand);  /* set pin low */
+
+	/* Loop until all data read */
+	while (*retlen < len) {
+
+#ifdef CONFIG_MTD_NAND_ECC
+		/* Do we have this page in cache ? */
+		if (nand->cache_page == page)
+			goto readdata;
+		/* Send the read command */
+		NanD_Command(nand, NAND_CMD_READ0);
+		if (nand->bus16) {
+ 			NanD_Address(nand, ADDR_COLUMN_PAGE,
+				     (page << nand->page_shift) + (col >> 1));
+		} else {
+ 			NanD_Address(nand, ADDR_COLUMN_PAGE,
+				     (page << nand->page_shift) + col);
+		}
+
+		/* Read in a page + oob data */
+		NanD_ReadBuf(nand, nand->data_buf, nand->oobblock + nand->oobsize);
+
+		/* copy data into cache, for read out of cache and if ecc fails */
+		if (nand->data_cache) {
+			memcpy (nand->data_cache, nand->data_buf,
+				nand->oobblock + nand->oobsize);
+		}
+
+		/* Pick the ECC bytes out of the oob data */
+		for (j = 0; j < 6; j++) {
+			ecc_code[j] = nand->data_buf[(nand->oobblock + oob_config.ecc_pos[j])];
+		}
+
+		/* Calculate the ECC and verify it */
+		/* If block was not written with ECC, skip ECC */
+		if (oob_config.eccvalid_pos != -1 &&
+		    (nand->data_buf[nand->oobblock + oob_config.eccvalid_pos] & 0x0f) != 0x0f) {
+
+			nand_calculate_ecc (&nand->data_buf[0], &ecc_calc[0]);
+			switch (nand_correct_data (&nand->data_buf[0], &ecc_code[0], &ecc_calc[0])) {
+			case -1:
+				printf ("%s: Failed ECC read, page 0x%08x\n", __FUNCTION__, page);
+				ecc_failed++;
+				break;
+			case 1:
+			case 2:	/* transfer ECC corrected data to cache */
+				if (nand->data_cache)
+					memcpy (nand->data_cache, nand->data_buf, 256);
+				break;
+			}
+		}
+
+		if (oob_config.eccvalid_pos != -1 &&
+		    nand->oobblock == 512 && (nand->data_buf[nand->oobblock + oob_config.eccvalid_pos] & 0xf0) != 0xf0) {
+
+			nand_calculate_ecc (&nand->data_buf[256], &ecc_calc[3]);
+			switch (nand_correct_data (&nand->data_buf[256], &ecc_code[3], &ecc_calc[3])) {
+			case -1:
+				printf ("%s: Failed ECC read, page 0x%08x\n", __FUNCTION__, page);
+				ecc_failed++;
+				break;
+			case 1:
+			case 2:	/* transfer ECC corrected data to cache */
+				if (nand->data_cache)
+					memcpy (&nand->data_cache[256], &nand->data_buf[256], 256);
+				break;
+			}
+		}
+readdata:
+		/* Read the data from ECC data buffer into return buffer */
+		data_poi = (nand->data_cache) ? nand->data_cache : nand->data_buf;
+		data_poi += col;
+		if ((*retlen + (nand->oobblock - col)) >= len) {
+			memcpy (buf + *retlen, data_poi, len - *retlen);
+			*retlen = len;
+		} else {
+			memcpy (buf + *retlen, data_poi,  nand->oobblock - col);
+			*retlen += nand->oobblock - col;
+		}
+		/* Set cache page address, invalidate, if ecc_failed */
+		nand->cache_page = (nand->data_cache && !ecc_failed) ? page : -1;
+
+		ecc_status += ecc_failed;
+		ecc_failed = 0;
+
+#else
+		/* Send the read command */
+		NanD_Command(nand, NAND_CMD_READ0);
+		if (nand->bus16) {
+			NanD_Address(nand, ADDR_COLUMN_PAGE,
+				     (page << nand->page_shift) + (col >> 1));
+		} else {
+			NanD_Address(nand, ADDR_COLUMN_PAGE,
+				     (page << nand->page_shift) + col);
+		}
+
+		/* Read the data directly into the return buffer */
+		if ((*retlen + (nand->oobblock - col)) >= len) {
+			NanD_ReadBuf(nand, buf + *retlen, len - *retlen);
+			*retlen = len;
+			/* We're done */
+			continue;
+		} else {
+			NanD_ReadBuf(nand, buf + *retlen, nand->oobblock - col);
+			*retlen += nand->oobblock - col;
+			}
+#endif
+		/* For subsequent reads align to page boundary. */
+		col = 0;
+		/* Increment page address */
+		page++;
+	}
+
+	/* De-select the NAND device */
+	NAND_DISABLE_CE(nand);  /* set pin high */
+
+	/*
+	 * Return success, if no ECC failures, else -EIO
+	 * fs driver will take care of that, because
+	 * retlen == desired len and result == -EIO
+	 */
+	return ecc_status ? -1 : 0;
+}
+
+/*
+ *	Nand_page_program function is used for write and writev !
+ */
+static int nand_write_page (struct nand_chip *nand,
+			    int page, int col, int last, u_char * ecc_code)
+{
+
+	int i;
+	unsigned long nandptr = nand->IO_ADDR;
+
+#ifdef CONFIG_MTD_NAND_ECC
+#ifdef CONFIG_MTD_NAND_VERIFY_WRITE
+	int ecc_bytes = (nand->oobblock == 512) ? 6 : 3;
+#endif
+#endif
+	/* pad oob area */
+	for (i = nand->oobblock; i < nand->oobblock + nand->oobsize; i++)
+		nand->data_buf[i] = 0xff;
+
+#ifdef CONFIG_MTD_NAND_ECC
+	/* Zero out the ECC array */
+	for (i = 0; i < 6; i++)
+		ecc_code[i] = 0x00;
+
+	/* Read back previous written data, if col > 0 */
+	if (col) {
+		NanD_Command (nand, NAND_CMD_READ0);
+		if (nand->bus16) {
+			NanD_Address (nand, ADDR_COLUMN_PAGE,
+				      (page << nand->page_shift) + (col >> 1));
+		} else {
+			NanD_Address (nand, ADDR_COLUMN_PAGE,
+				      (page << nand->page_shift) + col);
+		}
+
+		if (nand->bus16) {
+			u16 val;
+
+			for (i = 0; i < col; i += 2) {
+				val = READ_NAND (nandptr);
+				nand->data_buf[i] = val & 0xff;
+				nand->data_buf[i + 1] = val >> 8;
+			}
+		} else {
+			for (i = 0; i < col; i++)
+				nand->data_buf[i] = READ_NAND (nandptr);
+		}
+	}
+
+	/* Calculate and write the ECC if we have enough data */
+	if ((col < nand->eccsize) && (last >= nand->eccsize)) {
+		nand_calculate_ecc (&nand->data_buf[0], &(ecc_code[0]));
+		for (i = 0; i < 3; i++) {
+			nand->data_buf[(nand->oobblock +
+					oob_config.ecc_pos[i])] = ecc_code[i];
+		}
+		if (oob_config.eccvalid_pos != -1) {
+			nand->data_buf[nand->oobblock +
+				       oob_config.eccvalid_pos] = 0xf0;
+		}
+	}
+
+	/* Calculate and write the second ECC if we have enough data */
+	if ((nand->oobblock == 512) && (last == nand->oobblock)) {
+		nand_calculate_ecc (&nand->data_buf[256], &(ecc_code[3]));
+		for (i = 3; i < 6; i++) {
+			nand->data_buf[(nand->oobblock +
+					oob_config.ecc_pos[i])] = ecc_code[i];
+		}
+		if (oob_config.eccvalid_pos != -1) {
+			nand->data_buf[nand->oobblock +
+				       oob_config.eccvalid_pos] &= 0x0f;
+		}
+	}
+#endif
+	/* Prepad for partial page programming !!! */
+	for (i = 0; i < col; i++)
+		nand->data_buf[i] = 0xff;
+
+	/* Postpad for partial page programming !!! oob is already padded */
+	for (i = last; i < nand->oobblock; i++)
+		nand->data_buf[i] = 0xff;
+
+	/* Send command to begin auto page programming */
+	NanD_Command (nand, NAND_CMD_READ0);
+	NanD_Command (nand, NAND_CMD_SEQIN);
+	if (nand->bus16) {
+		NanD_Address (nand, ADDR_COLUMN_PAGE,
+			      (page << nand->page_shift) + (col >> 1));
+	} else {
+		NanD_Address (nand, ADDR_COLUMN_PAGE,
+			      (page << nand->page_shift) + col);
+	}
+
+	/* Write out complete page of data */
+	if (nand->bus16) {
+		for (i = 0; i < (nand->oobblock + nand->oobsize); i += 2) {
+			WRITE_NAND (nand->data_buf[i] +
+				    (nand->data_buf[i + 1] << 8),
+				    nand->IO_ADDR);
+		}
+	} else {
+		for (i = 0; i < (nand->oobblock + nand->oobsize); i++)
+			WRITE_NAND (nand->data_buf[i], nand->IO_ADDR);
+	}
+
+	/* Send command to actually program the data */
+	NanD_Command (nand, NAND_CMD_PAGEPROG);
+	NanD_Command (nand, NAND_CMD_STATUS);
+#ifdef NAND_NO_RB
+	{
+		u_char ret_val;
+
+		do {
+			ret_val = READ_NAND (nandptr);	/* wait till ready */
+		} while ((ret_val & 0x40) != 0x40);
+	}
+#endif
+	/* See if device thinks it succeeded */
+	if (READ_NAND (nand->IO_ADDR) & 0x01) {
+		printf ("%s: Failed write, page 0x%08x, ", __FUNCTION__,
+			page);
+		return -1;
+	}
+#ifdef CONFIG_MTD_NAND_VERIFY_WRITE
+	/*
+	 * The NAND device assumes that it is always writing to
+	 * a cleanly erased page. Hence, it performs its internal
+	 * write verification only on bits that transitioned from
+	 * 1 to 0. The device does NOT verify the whole page on a
+	 * byte by byte basis. It is possible that the page was
+	 * not completely erased or the page is becoming unusable
+	 * due to wear. The read with ECC would catch the error
+	 * later when the ECC page check fails, but we would rather
+	 * catch it early in the page write stage. Better to write
+	 * no data than invalid data.
+	 */
+
+	/* Send command to read back the page */
+	if (col < nand->eccsize)
+		NanD_Command (nand, NAND_CMD_READ0);
+	else
+		NanD_Command (nand, NAND_CMD_READ1);
+	if (nand->bus16) {
+		NanD_Address (nand, ADDR_COLUMN_PAGE,
+			      (page << nand->page_shift) + (col >> 1));
+	} else {
+		NanD_Address (nand, ADDR_COLUMN_PAGE,
+			      (page << nand->page_shift) + col);
+	}
+
+	/* Loop through and verify the data */
+	if (nand->bus16) {
+		for (i = col; i < last; i = +2) {
+			if ((nand->data_buf[i] +
+			     (nand->data_buf[i + 1] << 8)) != READ_NAND (nand->IO_ADDR)) {
+				printf ("%s: Failed write verify, page 0x%08x ",
+					__FUNCTION__, page);
+				return -1;
+			}
+		}
+	} else {
+		for (i = col; i < last; i++) {
+			if (nand->data_buf[i] != READ_NAND (nand->IO_ADDR)) {
+				printf ("%s: Failed write verify, page 0x%08x ",
+					__FUNCTION__, page);
+				return -1;
+			}
+		}
+	}
+
+#ifdef CONFIG_MTD_NAND_ECC
+	/*
+	 * We also want to check that the ECC bytes wrote
+	 * correctly for the same reasons stated above.
+	 */
+	NanD_Command (nand, NAND_CMD_READOOB);
+	if (nand->bus16) {
+		NanD_Address (nand, ADDR_COLUMN_PAGE,
+			      (page << nand->page_shift) + (col >> 1));
+	} else {
+		NanD_Address (nand, ADDR_COLUMN_PAGE,
+			      (page << nand->page_shift) + col);
+	}
+	if (nand->bus16) {
+		for (i = 0; i < nand->oobsize; i += 2) {
+			u16 val;
+
+			val = READ_NAND (nand->IO_ADDR);
+			nand->data_buf[i] = val & 0xff;
+			nand->data_buf[i + 1] = val >> 8;
+		}
+	} else {
+		for (i = 0; i < nand->oobsize; i++) {
+			nand->data_buf[i] = READ_NAND (nand->IO_ADDR);
+		}
+	}
+	for (i = 0; i < ecc_bytes; i++) {
+		if ((nand->data_buf[(oob_config.ecc_pos[i])] != ecc_code[i]) && ecc_code[i]) {
+			printf ("%s: Failed ECC write "
+				"verify, page 0x%08x, "
+				"%6i bytes were succesful\n",
+				__FUNCTION__, page, i);
+			return -1;
+		}
+	}
+#endif	/* CONFIG_MTD_NAND_ECC */
+#endif	/* CONFIG_MTD_NAND_VERIFY_WRITE */
+	return 0;
+}
+
+static int nand_write_ecc (struct nand_chip* nand, size_t to, size_t len,
+			   size_t * retlen, const u_char * buf, u_char * ecc_code)
+{
+	int i, page, col, cnt, ret = 0;
+
+	/* Do not allow write past end of device */
+	if ((to + len) > nand->totlen) {
+		printf ("%s: Attempt to write past end of page\n", __FUNCTION__);
+		return -1;
+	}
+
+	/* Shift to get page */
+	page = ((int) to) >> nand->page_shift;
+
+	/* Get the starting column */
+	col = to & (nand->oobblock - 1);
+
+	/* Initialize return length value */
+	*retlen = 0;
+
+	/* Select the NAND device */
+#ifdef CONFIG_OMAP1510
+	archflashwp(0,0);
+#endif
+#ifdef CFG_NAND_WP
+	NAND_WP_OFF();
+#endif
+
+    	NAND_ENABLE_CE(nand);  /* set pin low */
+
+	/* Check the WP bit */
+	NanD_Command(nand, NAND_CMD_STATUS);
+	if (!(READ_NAND(nand->IO_ADDR) & 0x80)) {
+		printf ("%s: Device is write protected!!!\n", __FUNCTION__);
+		ret = -1;
+		goto out;
+	}
+
+	/* Loop until all data is written */
+	while (*retlen < len) {
+		/* Invalidate cache, if we write to this page */
+		if (nand->cache_page == page)
+			nand->cache_page = -1;
+
+		/* Write data into buffer */
+		if ((col + len) >= nand->oobblock) {
+			for (i = col, cnt = 0; i < nand->oobblock; i++, cnt++) {
+				nand->data_buf[i] = buf[(*retlen + cnt)];
+			}
+		} else {
+			for (i = col, cnt = 0; cnt < (len - *retlen); i++, cnt++) {
+				nand->data_buf[i] = buf[(*retlen + cnt)];
+			}
+		}
+		/* We use the same function for write and writev !) */
+		ret = nand_write_page (nand, page, col, i, ecc_code);
+		if (ret)
+			goto out;
+
+		/* Next data start at page boundary */
+		col = 0;
+
+		/* Update written bytes count */
+		*retlen += cnt;
+
+		/* Increment page address */
+		page++;
+	}
+
+	/* Return happy */
+	*retlen = len;
+
+out:
+	/* De-select the NAND device */
+	NAND_DISABLE_CE(nand);  /* set pin high */
+#ifdef CONFIG_OMAP1510
+    	archflashwp(0,1);
+#endif
+#ifdef CFG_NAND_WP
+	NAND_WP_ON();
+#endif
+
+	return ret;
+}
+
+/* read from the 16 bytes of oob data that correspond to a 512 byte
+ * page or 2 256-byte pages.
+ */
+int nand_read_oob(struct nand_chip* nand, size_t ofs, size_t len,
+			 size_t * retlen, u_char * buf)
+{
+	int len256 = 0;
+	struct Nand *mychip;
+	int ret = 0;
+
+	mychip = &nand->chips[ofs >> nand->chipshift];
+
+	/* update address for 2M x 8bit devices. OOB starts on the second */
+	/* page to maintain compatibility with nand_read_ecc. */
+	if (nand->page256) {
+		if (!(ofs & 0x8))
+			ofs += 0x100;
+		else
+			ofs -= 0x8;
+	}
+
+	NAND_ENABLE_CE(nand);  /* set pin low */
+	NanD_Command(nand, NAND_CMD_READOOB);
+	if (nand->bus16) {
+ 		NanD_Address(nand, ADDR_COLUMN_PAGE,
+			     ((ofs >> nand->page_shift) << nand->page_shift) +
+ 				((ofs & (nand->oobblock - 1)) >> 1));
+	} else {
+		NanD_Address(nand, ADDR_COLUMN_PAGE, ofs);
+	}
+
+	/* treat crossing 8-byte OOB data for 2M x 8bit devices */
+	/* Note: datasheet says it should automaticaly wrap to the */
+	/*       next OOB block, but it didn't work here. mf.      */
+	if (nand->page256 && ofs + len > (ofs | 0x7) + 1) {
+		len256 = (ofs | 0x7) + 1 - ofs;
+		NanD_ReadBuf(nand, buf, len256);
+
+		NanD_Command(nand, NAND_CMD_READOOB);
+		NanD_Address(nand, ADDR_COLUMN_PAGE, ofs & (~0x1ff));
+	}
+
+	NanD_ReadBuf(nand, &buf[len256], len - len256);
+
+	*retlen = len;
+	/* Reading the full OOB data drops us off of the end of the page,
+	 * causing the flash device to go into busy mode, so we need
+	 * to wait until ready 11.4.1 and Toshiba TC58256FT nands */
+
+	ret = NanD_WaitReady(nand, 1);
+	NAND_DISABLE_CE(nand);  /* set pin high */
+
+	return ret;
+
+}
+
+/* write to the 16 bytes of oob data that correspond to a 512 byte
+ * page or 2 256-byte pages.
+ */
+int nand_write_oob(struct nand_chip* nand, size_t ofs, size_t len,
+		  size_t * retlen, const u_char * buf)
+{
+	int len256 = 0;
+	int i;
+	unsigned long nandptr = nand->IO_ADDR;
+
+#ifdef PSYCHO_DEBUG
+	printf("nand_write_oob(%lx, %d): %2.2X %2.2X %2.2X %2.2X ... %2.2X %2.2X .. %2.2X %2.2X\n",
+	       (long)ofs, len, buf[0], buf[1], buf[2], buf[3],
+	       buf[8], buf[9], buf[14],buf[15]);
+#endif
+
+	NAND_ENABLE_CE(nand);  /* set pin low to enable chip */
+
+	/* Reset the chip */
+	NanD_Command(nand, NAND_CMD_RESET);
+
+	/* issue the Read2 command to set the pointer to the Spare Data Area. */
+	NanD_Command(nand, NAND_CMD_READOOB);
+	if (nand->bus16) {
+ 		NanD_Address(nand, ADDR_COLUMN_PAGE,
+			     ((ofs >> nand->page_shift) << nand->page_shift) +
+ 				((ofs & (nand->oobblock - 1)) >> 1));
+	} else {
+ 		NanD_Address(nand, ADDR_COLUMN_PAGE, ofs);
+	}
+
+	/* update address for 2M x 8bit devices. OOB starts on the second */
+	/* page to maintain compatibility with nand_read_ecc. */
+	if (nand->page256) {
+		if (!(ofs & 0x8))
+			ofs += 0x100;
+		else
+			ofs -= 0x8;
+	}
+
+	/* issue the Serial Data In command to initial the Page Program process */
+	NanD_Command(nand, NAND_CMD_SEQIN);
+	if (nand->bus16) {
+ 		NanD_Address(nand, ADDR_COLUMN_PAGE,
+			     ((ofs >> nand->page_shift) << nand->page_shift) +
+ 				((ofs & (nand->oobblock - 1)) >> 1));
+	} else {
+ 		NanD_Address(nand, ADDR_COLUMN_PAGE, ofs);
+	}
+
+	/* treat crossing 8-byte OOB data for 2M x 8bit devices */
+	/* Note: datasheet says it should automaticaly wrap to the */
+	/*       next OOB block, but it didn't work here. mf.      */
+	if (nand->page256 && ofs + len > (ofs | 0x7) + 1) {
+		len256 = (ofs | 0x7) + 1 - ofs;
+		for (i = 0; i < len256; i++)
+			WRITE_NAND(buf[i], nandptr);
+
+		NanD_Command(nand, NAND_CMD_PAGEPROG);
+		NanD_Command(nand, NAND_CMD_STATUS);
+#ifdef NAND_NO_RB
+   		{ u_char ret_val;
+			do {
+				ret_val = READ_NAND(nandptr); /* wait till ready */
+			} while ((ret_val & 0x40) != 0x40);
+		}
+#endif
+		if (READ_NAND(nandptr) & 1) {
+			puts ("Error programming oob data\n");
+			/* There was an error */
+			NAND_DISABLE_CE(nand);  /* set pin high */
+			*retlen = 0;
+			return -1;
+		}
+		NanD_Command(nand, NAND_CMD_SEQIN);
+		NanD_Address(nand, ADDR_COLUMN_PAGE, ofs & (~0x1ff));
+	}
+
+	if (nand->bus16) {
+		for (i = len256; i < len; i += 2) {
+			WRITE_NAND(buf[i] + (buf[i+1] << 8), nandptr);
+		}
+	} else {
+		for (i = len256; i < len; i++)
+			WRITE_NAND(buf[i], nandptr);
+	}
+
+	NanD_Command(nand, NAND_CMD_PAGEPROG);
+	NanD_Command(nand, NAND_CMD_STATUS);
+#ifdef NAND_NO_RB
+	{	u_char ret_val;
+		do {
+			ret_val = READ_NAND(nandptr); /* wait till ready */
+		} while ((ret_val & 0x40) != 0x40);
+	}
+#endif
+	if (READ_NAND(nandptr) & 1) {
+		puts ("Error programming oob data\n");
+		/* There was an error */
+		NAND_DISABLE_CE(nand);  /* set pin high */
+		*retlen = 0;
+		return -1;
+	}
+
+	NAND_DISABLE_CE(nand);  /* set pin high */
+	*retlen = len;
+	return 0;
+
+}
+
+int nand_legacy_erase(struct nand_chip* nand, size_t ofs, size_t len, int clean)
+{
+	/* This is defined as a structure so it will work on any system
+	 * using native endian jffs2 (the default).
+	 */
+	static struct jffs2_unknown_node clean_marker = {
+		JFFS2_MAGIC_BITMASK,
+		JFFS2_NODETYPE_CLEANMARKER,
+		8		/* 8 bytes in this node */
+	};
+	unsigned long nandptr;
+	struct Nand *mychip;
+	int ret = 0;
+
+	if (ofs & (nand->erasesize-1) || len & (nand->erasesize-1)) {
+		printf ("Offset and size must be sector aligned, erasesize = %d\n",
+			(int) nand->erasesize);
+		return -1;
+	}
+
+	nandptr = nand->IO_ADDR;
+
+	/* Select the NAND device */
+#ifdef CONFIG_OMAP1510
+	archflashwp(0,0);
+#endif
+#ifdef CFG_NAND_WP
+	NAND_WP_OFF();
+#endif
+    NAND_ENABLE_CE(nand);  /* set pin low */
+
+	/* Check the WP bit */
+	NanD_Command(nand, NAND_CMD_STATUS);
+	if (!(READ_NAND(nand->IO_ADDR) & 0x80)) {
+		printf ("nand_write_ecc: Device is write protected!!!\n");
+		ret = -1;
+		goto out;
+	}
+
+	/* Check the WP bit */
+	NanD_Command(nand, NAND_CMD_STATUS);
+	if (!(READ_NAND(nand->IO_ADDR) & 0x80)) {
+		printf ("%s: Device is write protected!!!\n", __FUNCTION__);
+		ret = -1;
+		goto out;
+	}
+
+	/* FIXME: Do nand in the background. Use timers or schedule_task() */
+	while(len) {
+		/*mychip = &nand->chips[shr(ofs, nand->chipshift)];*/
+		mychip = &nand->chips[ofs >> nand->chipshift];
+
+		/* always check for bad block first, genuine bad blocks
+		 * should _never_  be erased.
+		 */
+		if (ALLOW_ERASE_BAD_DEBUG || !check_block(nand, ofs)) {
+			/* Select the NAND device */
+			NAND_ENABLE_CE(nand);  /* set pin low */
+
+			NanD_Command(nand, NAND_CMD_ERASE1);
+			NanD_Address(nand, ADDR_PAGE, ofs);
+			NanD_Command(nand, NAND_CMD_ERASE2);
+
+			NanD_Command(nand, NAND_CMD_STATUS);
+
+#ifdef NAND_NO_RB
+			{	u_char ret_val;
+				do {
+					ret_val = READ_NAND(nandptr); /* wait till ready */
+				} while ((ret_val & 0x40) != 0x40);
+			}
+#endif
+			if (READ_NAND(nandptr) & 1) {
+				printf ("%s: Error erasing at 0x%lx\n",
+					__FUNCTION__, (long)ofs);
+				/* There was an error */
+				ret = -1;
+				goto out;
+			}
+			if (clean) {
+				int n;	/* return value not used */
+				int p, l;
+
+				/* clean marker position and size depend
+				 * on the page size, since 256 byte pages
+				 * only have 8 bytes of oob data
+				 */
+				if (nand->page256) {
+					p = NAND_JFFS2_OOB8_FSDAPOS;
+					l = NAND_JFFS2_OOB8_FSDALEN;
+				} else {
+					p = NAND_JFFS2_OOB16_FSDAPOS;
+					l = NAND_JFFS2_OOB16_FSDALEN;
+				}
+
+				ret = nand_write_oob(nand, ofs + p, l, (size_t *)&n,
+						     (u_char *)&clean_marker);
+				/* quit here if write failed */
+				if (ret)
+					goto out;
+			}
+		}
+		ofs += nand->erasesize;
+		len -= nand->erasesize;
+	}
+
+out:
+	/* De-select the NAND device */
+	NAND_DISABLE_CE(nand);  /* set pin high */
+#ifdef CONFIG_OMAP1510
+    	archflashwp(0,1);
+#endif
+#ifdef CFG_NAND_WP
+	NAND_WP_ON();
+#endif
+
+	return ret;
+}
+
+
+static inline int nandcheck(unsigned long potential, unsigned long physadr)
+{
+	return 0;
+}
+
+unsigned long nand_probe(unsigned long physadr)
+{
+	struct nand_chip *nand = NULL;
+	int i = 0, ChipID = 1;
+
+#ifdef CONFIG_MTD_NAND_ECC_JFFS2
+	oob_config.ecc_pos[0] = NAND_JFFS2_OOB_ECCPOS0;
+	oob_config.ecc_pos[1] = NAND_JFFS2_OOB_ECCPOS1;
+	oob_config.ecc_pos[2] = NAND_JFFS2_OOB_ECCPOS2;
+	oob_config.ecc_pos[3] = NAND_JFFS2_OOB_ECCPOS3;
+	oob_config.ecc_pos[4] = NAND_JFFS2_OOB_ECCPOS4;
+	oob_config.ecc_pos[5] = NAND_JFFS2_OOB_ECCPOS5;
+	oob_config.eccvalid_pos = 4;
+#else
+	oob_config.ecc_pos[0] = NAND_NOOB_ECCPOS0;
+	oob_config.ecc_pos[1] = NAND_NOOB_ECCPOS1;
+	oob_config.ecc_pos[2] = NAND_NOOB_ECCPOS2;
+	oob_config.ecc_pos[3] = NAND_NOOB_ECCPOS3;
+	oob_config.ecc_pos[4] = NAND_NOOB_ECCPOS4;
+	oob_config.ecc_pos[5] = NAND_NOOB_ECCPOS5;
+	oob_config.eccvalid_pos = NAND_NOOB_ECCVPOS;
+#endif
+	oob_config.badblock_pos = 5;
+
+	for (i=0; i<CFG_MAX_NAND_DEVICE; i++) {
+		if (nand_dev_desc[i].ChipID == NAND_ChipID_UNKNOWN) {
+			nand = &nand_dev_desc[i];
+			break;
+		}
+	}
+	if (!nand)
+		return (0);
+
+	memset((char *)nand, 0, sizeof(struct nand_chip));
+
+	nand->IO_ADDR = physadr;
+	nand->cache_page = -1;  /* init the cache page */
+	NanD_ScanChips(nand);
+
+	if (nand->totlen == 0) {
+		/* no chips found, clean up and quit */
+		memset((char *)nand, 0, sizeof(struct nand_chip));
+		nand->ChipID = NAND_ChipID_UNKNOWN;
+		return (0);
+	}
+
+	nand->ChipID = ChipID;
+	if (curr_device == -1)
+		curr_device = i;
+
+	nand->data_buf = malloc (nand->oobblock + nand->oobsize);
+	if (!nand->data_buf) {
+		puts ("Cannot allocate memory for data structures.\n");
+		return (0);
+	}
+
+	return (nand->totlen);
+}
+
+#ifdef CONFIG_MTD_NAND_ECC
+/*
+ * Pre-calculated 256-way 1 byte column parity
+ */
+static const u_char nand_ecc_precalc_table[] = {
+	0x00, 0x55, 0x56, 0x03, 0x59, 0x0c, 0x0f, 0x5a,
+	0x5a, 0x0f, 0x0c, 0x59, 0x03, 0x56, 0x55, 0x00,
+	0x65, 0x30, 0x33, 0x66, 0x3c, 0x69, 0x6a, 0x3f,
+	0x3f, 0x6a, 0x69, 0x3c, 0x66, 0x33, 0x30, 0x65,
+	0x66, 0x33, 0x30, 0x65, 0x3f, 0x6a, 0x69, 0x3c,
+	0x3c, 0x69, 0x6a, 0x3f, 0x65, 0x30, 0x33, 0x66,
+	0x03, 0x56, 0x55, 0x00, 0x5a, 0x0f, 0x0c, 0x59,
+	0x59, 0x0c, 0x0f, 0x5a, 0x00, 0x55, 0x56, 0x03,
+	0x69, 0x3c, 0x3f, 0x6a, 0x30, 0x65, 0x66, 0x33,
+	0x33, 0x66, 0x65, 0x30, 0x6a, 0x3f, 0x3c, 0x69,
+	0x0c, 0x59, 0x5a, 0x0f, 0x55, 0x00, 0x03, 0x56,
+	0x56, 0x03, 0x00, 0x55, 0x0f, 0x5a, 0x59, 0x0c,
+	0x0f, 0x5a, 0x59, 0x0c, 0x56, 0x03, 0x00, 0x55,
+	0x55, 0x00, 0x03, 0x56, 0x0c, 0x59, 0x5a, 0x0f,
+	0x6a, 0x3f, 0x3c, 0x69, 0x33, 0x66, 0x65, 0x30,
+	0x30, 0x65, 0x66, 0x33, 0x69, 0x3c, 0x3f, 0x6a,
+	0x6a, 0x3f, 0x3c, 0x69, 0x33, 0x66, 0x65, 0x30,
+	0x30, 0x65, 0x66, 0x33, 0x69, 0x3c, 0x3f, 0x6a,
+	0x0f, 0x5a, 0x59, 0x0c, 0x56, 0x03, 0x00, 0x55,
+	0x55, 0x00, 0x03, 0x56, 0x0c, 0x59, 0x5a, 0x0f,
+	0x0c, 0x59, 0x5a, 0x0f, 0x55, 0x00, 0x03, 0x56,
+	0x56, 0x03, 0x00, 0x55, 0x0f, 0x5a, 0x59, 0x0c,
+	0x69, 0x3c, 0x3f, 0x6a, 0x30, 0x65, 0x66, 0x33,
+	0x33, 0x66, 0x65, 0x30, 0x6a, 0x3f, 0x3c, 0x69,
+	0x03, 0x56, 0x55, 0x00, 0x5a, 0x0f, 0x0c, 0x59,
+	0x59, 0x0c, 0x0f, 0x5a, 0x00, 0x55, 0x56, 0x03,
+	0x66, 0x33, 0x30, 0x65, 0x3f, 0x6a, 0x69, 0x3c,
+	0x3c, 0x69, 0x6a, 0x3f, 0x65, 0x30, 0x33, 0x66,
+	0x65, 0x30, 0x33, 0x66, 0x3c, 0x69, 0x6a, 0x3f,
+	0x3f, 0x6a, 0x69, 0x3c, 0x66, 0x33, 0x30, 0x65,
+	0x00, 0x55, 0x56, 0x03, 0x59, 0x0c, 0x0f, 0x5a,
+	0x5a, 0x0f, 0x0c, 0x59, 0x03, 0x56, 0x55, 0x00
+};
+
+
+/*
+ * Creates non-inverted ECC code from line parity
+ */
+static void nand_trans_result(u_char reg2, u_char reg3,
+	u_char *ecc_code)
+{
+	u_char a, b, i, tmp1, tmp2;
+
+	/* Initialize variables */
+	a = b = 0x80;
+	tmp1 = tmp2 = 0;
+
+	/* Calculate first ECC byte */
+	for (i = 0; i < 4; i++) {
+		if (reg3 & a)		/* LP15,13,11,9 --> ecc_code[0] */
+			tmp1 |= b;
+		b >>= 1;
+		if (reg2 & a)		/* LP14,12,10,8 --> ecc_code[0] */
+			tmp1 |= b;
+		b >>= 1;
+		a >>= 1;
+	}
+
+	/* Calculate second ECC byte */
+	b = 0x80;
+	for (i = 0; i < 4; i++) {
+		if (reg3 & a)		/* LP7,5,3,1 --> ecc_code[1] */
+			tmp2 |= b;
+		b >>= 1;
+		if (reg2 & a)		/* LP6,4,2,0 --> ecc_code[1] */
+			tmp2 |= b;
+		b >>= 1;
+		a >>= 1;
+	}
+
+	/* Store two of the ECC bytes */
+	ecc_code[0] = tmp1;
+	ecc_code[1] = tmp2;
+}
+
+/*
+ * Calculate 3 byte ECC code for 256 byte block
+ */
+static void nand_calculate_ecc (const u_char *dat, u_char *ecc_code)
+{
+	u_char idx, reg1, reg3;
+	int j;
+
+	/* Initialize variables */
+	reg1 = reg3 = 0;
+	ecc_code[0] = ecc_code[1] = ecc_code[2] = 0;
+
+	/* Build up column parity */
+	for(j = 0; j < 256; j++) {
+
+		/* Get CP0 - CP5 from table */
+		idx = nand_ecc_precalc_table[dat[j]];
+		reg1 ^= idx;
+
+		/* All bit XOR = 1 ? */
+		if (idx & 0x40) {
+			reg3 ^= (u_char) j;
+		}
+	}
+
+	/* Create non-inverted ECC code from line parity */
+	nand_trans_result((reg1 & 0x40) ? ~reg3 : reg3, reg3, ecc_code);
+
+	/* Calculate final ECC code */
+	ecc_code[0] = ~ecc_code[0];
+	ecc_code[1] = ~ecc_code[1];
+	ecc_code[2] = ((~reg1) << 2) | 0x03;
+}
+
+/*
+ * Detect and correct a 1 bit error for 256 byte block
+ */
+static int nand_correct_data (u_char *dat, u_char *read_ecc, u_char *calc_ecc)
+{
+	u_char a, b, c, d1, d2, d3, add, bit, i;
+
+	/* Do error detection */
+	d1 = calc_ecc[0] ^ read_ecc[0];
+	d2 = calc_ecc[1] ^ read_ecc[1];
+	d3 = calc_ecc[2] ^ read_ecc[2];
+
+	if ((d1 | d2 | d3) == 0) {
+		/* No errors */
+		return 0;
+	} else {
+		a = (d1 ^ (d1 >> 1)) & 0x55;
+		b = (d2 ^ (d2 >> 1)) & 0x55;
+		c = (d3 ^ (d3 >> 1)) & 0x54;
+
+		/* Found and will correct single bit error in the data */
+		if ((a == 0x55) && (b == 0x55) && (c == 0x54)) {
+			c = 0x80;
+			add = 0;
+			a = 0x80;
+			for (i=0; i<4; i++) {
+				if (d1 & c)
+					add |= a;
+				c >>= 2;
+				a >>= 1;
+			}
+			c = 0x80;
+			for (i=0; i<4; i++) {
+				if (d2 & c)
+					add |= a;
+				c >>= 2;
+				a >>= 1;
+			}
+			bit = 0;
+			b = 0x04;
+			c = 0x80;
+			for (i=0; i<3; i++) {
+				if (d3 & c)
+					bit |= b;
+				c >>= 2;
+				b >>= 1;
+			}
+			b = 0x01;
+			a = dat[add];
+			a ^= (b << bit);
+			dat[add] = a;
+			return 1;
+		}
+		else {
+			i = 0;
+			while (d1) {
+				if (d1 & 0x01)
+					++i;
+				d1 >>= 1;
+			}
+			while (d2) {
+				if (d2 & 0x01)
+					++i;
+				d2 >>= 1;
+			}
+			while (d3) {
+				if (d3 & 0x01)
+					++i;
+				d3 >>= 1;
+			}
+			if (i == 1) {
+				/* ECC Code Error Correction */
+				read_ecc[0] = calc_ecc[0];
+				read_ecc[1] = calc_ecc[1];
+				read_ecc[2] = calc_ecc[2];
+				return 2;
+			}
+			else {
+				/* Uncorrectable Error */
+				return -1;
+			}
+		}
+	}
+
+	/* Should never happen */
+	return -1;
+}
+
+#endif
+
+#endif /* (CONFIG_COMMANDS & CFG_CMD_NAND) */