Initial revision

1 files changed, 860 insertions, 0 deletions

diff --git a/board/mpl/common/flash.c b/board/mpl/common/flash.c
new file mode 100644
index 0000000..f0c541b
--- /dev/null
+++ b/board/mpl/common/flash.c
@@ -0,0 +1,860 @@
+/*
+ * (C) Copyright 2000, 2001
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/*
+ * Modified 4/5/2001
+ * Wait for completion of each sector erase command issued
+ * 4/5/2001
+ * Chris Hallinan - DS4.COM, Inc. - clh@net1plus.com
+ */
+
+/*
+ * Modified 3/7/2001
+ * - adopted for pip405, Denis Peter, MPL AG Switzerland
+ * TODO:
+ * clean-up
+ */
+
+#include <common.h>
+#include <ppc4xx.h>
+#include <asm/processor.h>
+#ifdef CONFIG_PIP405
+#include "../pip405/pip405.h"
+#endif
+#ifdef CONFIG_MIP405
+#include "../mip405/mip405.h"
+#endif
+#include "common_util.h"
+
+flash_info_t	flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips	*/
+/*-----------------------------------------------------------------------
+ * Functions
+ */
+static ulong flash_get_size (vu_long *addr, flash_info_t *info);
+static int write_word (flash_info_t *info, ulong dest, ulong data);
+static void flash_get_offsets (ulong base, flash_info_t *info);
+
+void unlock_intel_sectors(flash_info_t *info,ulong addr,ulong cnt);
+
+
+#ifdef CONFIG_ADCIOP
+#define ADDR0           0x0aa9
+#define ADDR1           0x0556
+#define FLASH_WORD_SIZE unsigned char
+#endif
+
+#ifdef CONFIG_CPCI405
+#define ADDR0           0x5555
+#define ADDR1           0x2aaa
+#define FLASH_WORD_SIZE unsigned short
+#endif
+
+#ifdef CONFIG_PIP405
+#define ADDR0           0x5555
+#define ADDR1           0x2aaa
+#define FLASH_WORD_SIZE unsigned short
+#endif
+
+#ifdef CONFIG_MIP405
+#define ADDR0           0x5555
+#define ADDR1           0x2aaa
+#define FLASH_WORD_SIZE unsigned short
+#endif
+
+#define FALSE           0
+#define TRUE            1
+
+/*-----------------------------------------------------------------------
+ */
+
+
+unsigned long flash_init (void)
+{
+	unsigned long size_b0, size_b1;
+	int i;
+  unsigned long pbcr;
+  unsigned long base_b0, base_b1;
+  unsigned char rc;
+
+  rc=switch_cs(FALSE); /* map Flash High */
+
+	if(rc)
+		printf("(MPS Boot) ");
+	else
+		printf("(Flash Boot) ");
+	/* Init: no FLASHes known */
+	for (i=0; i<CFG_MAX_FLASH_BANKS; ++i) {
+		flash_info[i].flash_id = FLASH_UNKNOWN;
+	}
+
+	/* Static FLASH Bank configuration here - FIXME XXX */
+
+	size_b0 = flash_get_size((vu_long *)FLASH_BASE0_PRELIM, &flash_info[0]);
+
+	if (flash_info[0].flash_id == FLASH_UNKNOWN) {
+		printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
+			size_b0, size_b0<<20);
+	}
+	/* Only one bank */
+	if (CFG_MAX_FLASH_BANKS == 1)
+	  {
+	    /* Setup offsets */
+			/*  flash_get_offsets (FLASH_BASE0_PRELIM, &flash_info[0]); */
+	    /* Monitor protection ON by default */
+#if CFG_MONITOR_BASE >= CFG_FLASH_BASE
+	 	    flash_protect(FLAG_PROTECT_SET,
+				CFG_MONITOR_BASE,
+				CFG_MONITOR_BASE+CFG_MONITOR_LEN-1,
+				&flash_info[0]);
+#endif
+	    size_b1 = 0 ;
+	    flash_info[0].size = size_b0;
+	  }
+
+	/* 2 banks */
+	else
+	  {
+	    size_b1 = flash_get_size((vu_long *)FLASH_BASE1_PRELIM, &flash_info[1]);
+
+	    /* Re-do sizing to get full correct info */
+
+	    if (size_b1)
+	      {
+		mtdcr(ebccfga, pb0cr);
+		pbcr = mfdcr(ebccfgd);
+		mtdcr(ebccfga, pb0cr);
+		base_b1 = -size_b1;
+		pbcr = (pbcr & 0x0001ffff) | base_b1 | (((size_b1/1024/1024)-1)<<17);
+		mtdcr(ebccfgd, pbcr);
+		/*          printf("pb1cr = %x\n", pbcr); */
+	      }
+
+	    if (size_b0)
+	      {
+		mtdcr(ebccfga, pb1cr);
+		pbcr = mfdcr(ebccfgd);
+		mtdcr(ebccfga, pb1cr);
+		base_b0 = base_b1 - size_b0;
+		pbcr = (pbcr & 0x0001ffff) | base_b0 | (((size_b0/1024/1024)-1)<<17);
+		mtdcr(ebccfgd, pbcr);
+		/*            printf("pb0cr = %x\n", pbcr); */
+	      }
+
+	    size_b0 = flash_get_size((vu_long *)base_b0, &flash_info[0]);
+
+	    flash_get_offsets (base_b0, &flash_info[0]);
+
+	    /* monitor protection ON by default */
+	    (void)flash_protect(FLAG_PROTECT_SET,
+				base_b0+size_b0-CFG_MONITOR_LEN,
+				base_b0+size_b0-1,
+				&flash_info[0]);
+
+	    if (size_b1) {
+	      /* Re-do sizing to get full correct info */
+	      size_b1 = flash_get_size((vu_long *)base_b1, &flash_info[1]);
+
+	      flash_get_offsets (base_b1, &flash_info[1]);
+
+	      /* monitor protection ON by default */
+	      (void)flash_protect(FLAG_PROTECT_SET,
+				  base_b1+size_b1-CFG_MONITOR_LEN,
+				  base_b1+size_b1-1,
+				  &flash_info[1]);
+	      /* monitor protection OFF by default (one is enough) */
+	      (void)flash_protect(FLAG_PROTECT_CLEAR,
+				  base_b0+size_b0-CFG_MONITOR_LEN,
+				  base_b0+size_b0-1,
+				  &flash_info[0]);
+	    } else {
+	      flash_info[1].flash_id = FLASH_UNKNOWN;
+	      flash_info[1].sector_count = -1;
+	    }
+
+	    flash_info[0].size = size_b0;
+	    flash_info[1].size = size_b1;
+	  }/* else 2 banks */
+	switch_cs(rc); /* switch mode back */
+	return (size_b0 + size_b1);
+}
+
+
+static void flash_get_offsets (ulong base, flash_info_t *info)
+{
+	return;
+}
+#if 0
+/*-----------------------------------------------------------------------
+ */
+static void flash_get_offsets (ulong base, flash_info_t *info)
+{
+	int i;
+
+	/* set up sector start address table */
+  if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
+	    (info->flash_id  == FLASH_AM040)){
+		for (i = 0; i < info->sector_count; i++)
+			info->start[i] = base + (i * 0x00010000);
+  }
+  else {
+		if (info->flash_id & FLASH_BTYPE) {
+		/* set sector offsets for bottom boot block type	*/
+		info->start[0] = base + 0x00000000;
+		info->start[1] = base + 0x00004000;
+		info->start[2] = base + 0x00006000;
+		info->start[3] = base + 0x00008000;
+		for (i = 4; i < info->sector_count; i++) {
+			info->start[i] = base + (i * 0x00010000) - 0x00030000;
+		}
+	    } else {
+		/* set sector offsets for top boot block type		*/
+		i = info->sector_count - 1;
+		info->start[i--] = base + info->size - 0x00004000;
+		info->start[i--] = base + info->size - 0x00006000;
+		info->start[i--] = base + info->size - 0x00008000;
+		for (; i >= 0; i--) {
+			info->start[i] = base + i * 0x00010000;
+		}
+	    }
+	}
+}
+
+#endif
+/*-----------------------------------------------------------------------
+ */
+void flash_print_info  (flash_info_t *info)
+{
+	int i;
+    int k;
+   	int size;
+    int erased;
+    volatile unsigned long *flash;
+
+	if (info->flash_id == FLASH_UNKNOWN) {
+		printf ("missing or unknown FLASH type\n");
+		return;
+	}
+
+	switch (info->flash_id & FLASH_VENDMASK) {
+	case FLASH_MAN_AMD:	printf ("AMD ");		break;
+	case FLASH_MAN_FUJ:	printf ("FUJITSU ");		break;
+	case FLASH_MAN_SST:	printf ("SST ");		break;
+	case FLASH_MAN_INTEL:	printf ("Intel ");		break;
+	default:		printf ("Unknown Vendor ");	break;
+	}
+
+	switch (info->flash_id & FLASH_TYPEMASK) {
+	case FLASH_AM040:	printf ("AM29F040 (512 Kbit, uniform sector size)\n");
+				break;
+	case FLASH_AM400B:	printf ("AM29LV400B (4 Mbit, bottom boot sect)\n");
+				break;
+	case FLASH_AM400T:	printf ("AM29LV400T (4 Mbit, top boot sector)\n");
+				break;
+	case FLASH_AM800B:	printf ("AM29LV800B (8 Mbit, bottom boot sect)\n");
+				break;
+	case FLASH_AM800T:	printf ("AM29LV800T (8 Mbit, top boot sector)\n");
+				break;
+	case FLASH_AM160B:	printf ("AM29LV160B (16 Mbit, bottom boot sect)\n");
+				break;
+	case FLASH_AM160T:	printf ("AM29LV160T (16 Mbit, top boot sector)\n");
+				break;
+	case FLASH_AM320B:	printf ("AM29LV320B (32 Mbit, bottom boot sect)\n");
+				break;
+	case FLASH_AM320T:	printf ("AM29LV320T (32 Mbit, top boot sector)\n");
+				break;
+	case FLASH_SST800A:	printf ("SST39LF/VF800 (8 Mbit, uniform sector size)\n");
+				break;
+	case FLASH_SST160A:	printf ("SST39LF/VF160 (16 Mbit, uniform sector size)\n");
+				break;
+	case FLASH_INTEL320T:	printf ("TE28F320C3 (32 Mbit, top sector size)\n");
+				break;
+	default:		printf ("Unknown Chip Type\n");
+				break;
+	}
+
+	printf ("  Size: %ld KB in %d Sectors\n",
+		info->size >> 10, info->sector_count);
+
+	printf ("  Sector Start Addresses:");
+	for (i=0; i<info->sector_count; ++i) {
+  	/*
+     * Check if whole sector is erased
+     */
+		if (i != (info->sector_count-1))
+    	size = info->start[i+1] - info->start[i];
+		else
+      size = info->start[0] + info->size - info->start[i];
+    erased = 1;
+    flash = (volatile unsigned long *)info->start[i];
+    size = size >> 2;        /* divide by 4 for longword access */
+    for (k=0; k<size; k++)
+    {
+    	if (*flash++ != 0xffffffff)
+			{
+ 				erased = 0;
+				break;
+			}
+ 		}
+		if ((i % 5) == 0)
+			printf ("\n   ");
+#if 0 /* test-only */
+		printf (" %08lX%s",
+			info->start[i],
+			info->protect[i] ? " (RO)" : "     "
+#else
+		printf (" %08lX%s%s",
+			info->start[i],
+			erased ? " E" : "  ",
+			info->protect[i] ? "RO " : "   "
+#endif
+		);
+	}
+	printf ("\n");
+
+}
+
+/*-----------------------------------------------------------------------
+ */
+
+
+/*-----------------------------------------------------------------------
+ */
+
+/*
+ * The following code cannot be run from FLASH!
+ */
+static ulong flash_get_size (vu_long *addr, flash_info_t *info)
+{
+	short i;
+	FLASH_WORD_SIZE value;
+	ulong base = (ulong)addr;
+	volatile FLASH_WORD_SIZE *addr2 = (FLASH_WORD_SIZE *)addr;
+
+	/* Write auto select command: read Manufacturer ID */
+	addr2[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA;
+	addr2[ADDR1] = (FLASH_WORD_SIZE)0x00550055;
+	addr2[ADDR0] = (FLASH_WORD_SIZE)0x00900090;
+
+	value = addr2[0];
+	/*	printf("flash_get_size value: %x\n",value); */
+	switch (value) {
+	case (FLASH_WORD_SIZE)AMD_MANUFACT:
+		info->flash_id = FLASH_MAN_AMD;
+		break;
+	case (FLASH_WORD_SIZE)FUJ_MANUFACT:
+		info->flash_id = FLASH_MAN_FUJ;
+		break;
+	case (FLASH_WORD_SIZE)INTEL_MANUFACT:
+		info->flash_id = FLASH_MAN_INTEL;
+		break;
+	case (FLASH_WORD_SIZE)SST_MANUFACT:
+		info->flash_id = FLASH_MAN_SST;
+		break;
+	default:
+		info->flash_id = FLASH_UNKNOWN;
+		info->sector_count = 0;
+		info->size = 0;
+		return (0);			/* no or unknown flash	*/
+	}
+	value = addr2[1];			/* device ID		*/
+	/*	printf("Device value %x\n",value); */
+	switch (value) {
+	case (FLASH_WORD_SIZE)AMD_ID_F040B:
+	        info->flash_id += FLASH_AM040;
+		info->sector_count = 8;
+		info->size = 0x0080000; /* => 512 ko */
+		break;
+	case (FLASH_WORD_SIZE)AMD_ID_LV400T:
+		info->flash_id += FLASH_AM400T;
+		info->sector_count = 11;
+		info->size = 0x00080000;
+		break;				/* => 0.5 MB		*/
+
+	case (FLASH_WORD_SIZE)AMD_ID_LV400B:
+		info->flash_id += FLASH_AM400B;
+		info->sector_count = 11;
+		info->size = 0x00080000;
+		break;				/* => 0.5 MB		*/
+
+	case (FLASH_WORD_SIZE)AMD_ID_LV800T:
+		info->flash_id += FLASH_AM800T;
+		info->sector_count = 19;
+		info->size = 0x00100000;
+		break;				/* => 1 MB		*/
+
+	case (FLASH_WORD_SIZE)AMD_ID_LV800B:
+		info->flash_id += FLASH_AM800B;
+		info->sector_count = 19;
+		info->size = 0x00100000;
+		break;				/* => 1 MB		*/
+
+	case (FLASH_WORD_SIZE)AMD_ID_LV160T:
+		info->flash_id += FLASH_AM160T;
+		info->sector_count = 35;
+		info->size = 0x00200000;
+		break;				/* => 2 MB		*/
+
+	case (FLASH_WORD_SIZE)AMD_ID_LV160B:
+		info->flash_id += FLASH_AM160B;
+		info->sector_count = 35;
+		info->size = 0x00200000;
+		break;				/* => 2 MB		*/
+#if 0	/* enable when device IDs are available */
+	case (FLASH_WORD_SIZE)AMD_ID_LV320T:
+		info->flash_id += FLASH_AM320T;
+		info->sector_count = 67;
+		info->size = 0x00400000;
+		break;				/* => 4 MB		*/
+
+	case (FLASH_WORD_SIZE)AMD_ID_LV320B:
+		info->flash_id += FLASH_AM320B;
+		info->sector_count = 67;
+		info->size = 0x00400000;
+		break;				/* => 4 MB		*/
+#endif
+	case (FLASH_WORD_SIZE)SST_ID_xF800A:
+		info->flash_id += FLASH_SST800A;
+		info->sector_count = 16;
+		info->size = 0x00100000;
+		break;				/* => 1 MB		*/
+	case (FLASH_WORD_SIZE)INTEL_ID_28F320C3T:
+		info->flash_id += FLASH_INTEL320T;
+		info->sector_count = 71;
+		info->size = 0x00400000;
+		break;				/* => 4 MB		*/
+
+
+	case (FLASH_WORD_SIZE)SST_ID_xF160A:
+		info->flash_id += FLASH_SST160A;
+		info->sector_count = 32;
+		info->size = 0x00200000;
+		break;				/* => 2 MB		*/
+
+	default:
+		info->flash_id = FLASH_UNKNOWN;
+		return (0);			/* => no or unknown flash */
+
+	}
+
+	/* set up sector start address table */
+  if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
+	    (info->flash_id  == FLASH_AM040)){
+		for (i = 0; i < info->sector_count; i++)
+			info->start[i] = base + (i * 0x00010000);
+  } else {
+		if (info->flash_id & FLASH_BTYPE) {
+		/* set sector offsets for bottom boot block type	*/
+		info->start[0] = base + 0x00000000;
+		info->start[1] = base + 0x00004000;
+		info->start[2] = base + 0x00006000;
+		info->start[3] = base + 0x00008000;
+		for (i = 4; i < info->sector_count; i++)
+			info->start[i] = base + (i * 0x00010000) - 0x00030000;
+	  }
+	  else {
+			/* set sector offsets for top boot block type		*/
+			i = info->sector_count - 1;
+			if(info->sector_count==71) {
+
+				info->start[i--] = base + info->size - 0x00002000;
+				info->start[i--] = base + info->size - 0x00004000;
+				info->start[i--] = base + info->size - 0x00006000;
+				info->start[i--] = base + info->size - 0x00008000;
+				info->start[i--] = base + info->size - 0x0000A000;
+				info->start[i--] = base + info->size - 0x0000C000;
+				info->start[i--] = base + info->size - 0x0000E000;
+				for (; i >= 0; i--)
+					info->start[i] = base + i * 0x000010000;
+			}
+			else {
+				info->start[i--] = base + info->size - 0x00004000;
+				info->start[i--] = base + info->size - 0x00006000;
+				info->start[i--] = base + info->size - 0x00008000;
+				for (; i >= 0; i--)
+					info->start[i] = base + i * 0x00010000;
+			}
+		}
+	}
+
+	/* check for protected sectors */
+	for (i = 0; i < info->sector_count; i++) {
+		/* read sector protection at sector address, (A7 .. A0) = 0x02 */
+		/* D0 = 1 if protected */
+		addr2 = (volatile FLASH_WORD_SIZE *)(info->start[i]);
+    	if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL)
+      	info->protect[i] = 0;
+      else
+        info->protect[i] = addr2[2] & 1;
+	}
+
+	/*
+	 * Prevent writes to uninitialized FLASH.
+	 */
+	if (info->flash_id != FLASH_UNKNOWN) {
+#if 0 /* test-only */
+#ifdef CONFIG_ADCIOP
+		addr2 = (volatile unsigned char *)info->start[0];
+                addr2[ADDR0] = 0xAA;
+                addr2[ADDR1] = 0x55;
+                addr2[ADDR0] = 0xF0;  /* reset bank */
+#else
+		addr2 = (FLASH_WORD_SIZE *)info->start[0];
+		*addr2 = (FLASH_WORD_SIZE)0x00F000F0;	/* reset bank */
+#endif
+#else /* test-only */
+		addr2 = (FLASH_WORD_SIZE *)info->start[0];
+		*addr2 = (FLASH_WORD_SIZE)0x00F000F0;	/* reset bank */
+#endif /* test-only */
+	}
+	return (info->size);
+}
+
+int wait_for_DQ7(flash_info_t *info, int sect)
+{
+	ulong start, now, last;
+	volatile FLASH_WORD_SIZE *addr = (FLASH_WORD_SIZE *)(info->start[sect]);
+
+	start = get_timer (0);
+    last  = start;
+    while ((addr[0] & (FLASH_WORD_SIZE)0x00800080) != (FLASH_WORD_SIZE)0x00800080) {
+        if ((now = get_timer(start)) > CFG_FLASH_ERASE_TOUT) {
+            printf ("Timeout\n");
+            return -1;
+        }
+        /* show that we're waiting */
+        if ((now - last) > 1000) {  /* every second */
+	    			putc ('.');
+            last = now;
+        }
+    }
+	return 0;
+}
+
+int intel_wait_for_DQ7(flash_info_t *info, int sect)
+{
+	ulong start, now, last;
+	volatile FLASH_WORD_SIZE *addr = (FLASH_WORD_SIZE *)(info->start[sect]);
+
+		start = get_timer (0);
+    last  = start;
+    while ((addr[0] & (FLASH_WORD_SIZE)0x00800080) != (FLASH_WORD_SIZE)0x00800080) {
+        if ((now = get_timer(start)) > CFG_FLASH_ERASE_TOUT) {
+            printf ("Timeout\n");
+            return -1;
+        }
+        /* show that we're waiting */
+        if ((now - last) > 1000) {  /* every second */
+	    			putc ('.');
+            last = now;
+        }
+    }
+    addr[0]=(FLASH_WORD_SIZE)0x00500050;
+	return 0;
+}
+
+/*-----------------------------------------------------------------------
+ */
+
+int	flash_erase (flash_info_t *info, int s_first, int s_last)
+{
+	volatile FLASH_WORD_SIZE *addr = (FLASH_WORD_SIZE *)(info->start[0]);
+	volatile FLASH_WORD_SIZE *addr2;
+	int flag, prot, sect, l_sect;
+	int i;
+
+
+	if ((s_first < 0) || (s_first > s_last)) {
+		if (info->flash_id == FLASH_UNKNOWN) {
+			printf ("- missing\n");
+		} else {
+			printf ("- no sectors to erase\n");
+		}
+		return 1;
+	}
+
+	if (info->flash_id == FLASH_UNKNOWN) {
+		printf ("Can't erase unknown flash type - aborted\n");
+		return 1;
+	}
+
+	prot = 0;
+	for (sect=s_first; sect<=s_last; ++sect) {
+		if (info->protect[sect]) {
+			prot++;
+		}
+	}
+
+	if (prot) {
+		printf ("- Warning: %d protected sectors will not be erased!\n",
+			prot);
+	} else {
+		printf ("\n");
+	}
+
+	l_sect = -1;
+
+	/* Disable interrupts which might cause a timeout here */
+	flag = disable_interrupts();
+
+	/* Start erase on unprotected sectors */
+	for (sect = s_first; sect<=s_last; sect++) {
+		if (info->protect[sect] == 0) {	/* not protected */
+			addr2 = (FLASH_WORD_SIZE *)(info->start[sect]);
+			/*  printf("Erasing sector %p\n", addr2); */ /* CLH */
+	    if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) {
+				addr[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA;
+				addr[ADDR1] = (FLASH_WORD_SIZE)0x00550055;
+				addr[ADDR0] = (FLASH_WORD_SIZE)0x00800080;
+				addr[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA;
+				addr[ADDR1] = (FLASH_WORD_SIZE)0x00550055;
+				addr2[0] = (FLASH_WORD_SIZE)0x00500050;  /* block erase */
+				for (i=0; i<50; i++)
+					udelay(1000);  /* wait 1 ms */
+		    wait_for_DQ7(info, sect);
+		  }
+		  else {
+		  	if((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL){
+					addr2[0] = (FLASH_WORD_SIZE)0x00600060;  /* unlock sector */
+					addr2[0] = (FLASH_WORD_SIZE)0x00D000D0;  /* sector erase */
+			    intel_wait_for_DQ7(info, sect);
+					addr2[0] = (FLASH_WORD_SIZE)0x00200020;  /* sector erase */
+					addr2[0] = (FLASH_WORD_SIZE)0x00D000D0;  /* sector erase */
+			    intel_wait_for_DQ7(info, sect);
+				}
+				else {
+					addr[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA;
+					addr[ADDR1] = (FLASH_WORD_SIZE)0x00550055;
+					addr[ADDR0] = (FLASH_WORD_SIZE)0x00800080;
+					addr[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA;
+					addr[ADDR1] = (FLASH_WORD_SIZE)0x00550055;
+					addr2[0] = (FLASH_WORD_SIZE)0x00300030;  /* sector erase */
+			    wait_for_DQ7(info, sect);
+		 		}
+		 }
+		 l_sect = sect;
+		    /*
+		     * Wait for each sector to complete, it's more
+		     * reliable.  According to AMD Spec, you must
+		     * issue all erase commands within a specified
+		     * timeout.  This has been seen to fail, especially
+		     * if printf()s are included (for debug)!!
+		     */
+		 /*   wait_for_DQ7(info, sect); */
+		}
+	}
+
+	/* re-enable interrupts if necessary */
+	if (flag)
+		enable_interrupts();
+
+	/* wait at least 80us - let's wait 1 ms */
+	udelay (1000);
+
+#if 0
+	/*
+	 * We wait for the last triggered sector
+	 */
+	if (l_sect < 0)
+		goto DONE;
+	wait_for_DQ7(info, l_sect);
+
+DONE:
+#endif
+	/* reset to read mode */
+	addr = (FLASH_WORD_SIZE *)info->start[0];
+	addr[0] = (FLASH_WORD_SIZE)0x00F000F0;	/* reset bank */
+
+	printf (" done\n");
+	return 0;
+}
+
+void unlock_intel_sectors(flash_info_t *info,ulong addr,ulong cnt)
+{
+	int i;
+	volatile FLASH_WORD_SIZE *addr2;
+	long c;
+	c= (long)cnt;
+	for(i=info->sector_count-1;i>0;i--)
+	{
+		if(addr>=info->start[i])
+			break;
+	}
+	do {
+		addr2 = (FLASH_WORD_SIZE *)(info->start[i]);
+		addr2[0] = (FLASH_WORD_SIZE)0x00600060;  /* unlock sector setup */
+		addr2[0] = (FLASH_WORD_SIZE)0x00D000D0;  /* unlock sector */
+		intel_wait_for_DQ7(info, i);
+		i++;
+		c-=(info->start[i]-info->start[i-1]);
+	}while(c>0);
+
+
+}
+
+
+/*-----------------------------------------------------------------------
+ * Copy memory to flash, returns:
+ * 0 - OK
+ * 1 - write timeout
+ * 2 - Flash not erased
+ */
+
+int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
+{
+	ulong cp, wp, data;
+	int i, l, rc;
+
+	if((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL){
+		unlock_intel_sectors(info,addr,cnt);
+	}
+	wp = (addr & ~3);	/* get lower word aligned address */
+	/*
+	 * handle unaligned start bytes
+	 */
+	if ((l = addr - wp) != 0) {
+		data = 0;
+		for (i=0, cp=wp; i<l; ++i, ++cp) {
+			data = (data << 8) | (*(uchar *)cp);
+		}
+		for (; i<4 && cnt>0; ++i) {
+			data = (data << 8) | *src++;
+			--cnt;
+			++cp;
+		}
+		for (; cnt==0 && i<4; ++i, ++cp) {
+			data = (data << 8) | (*(uchar *)cp);
+		}
+
+		if ((rc = write_word(info, wp, data)) != 0) {
+			return (rc);
+		}
+		wp += 4;
+	}
+
+	/*
+	 * handle word aligned part
+	 */
+	while (cnt >= 4) {
+		data = 0;
+		for (i=0; i<4; ++i) {
+			data = (data << 8) | *src++;
+		}
+		if ((rc = write_word(info, wp, data)) != 0) {
+			return (rc);
+		}
+		wp  += 4;
+		if((wp % 0x10000)==0)
+			printf("."); /* show Progress */
+		cnt -= 4;
+	}
+
+	if (cnt == 0) {
+		return (0);
+	}
+
+	/*
+	 * handle unaligned tail bytes
+	 */
+	data = 0;
+	for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) {
+		data = (data << 8) | *src++;
+		--cnt;
+	}
+	for (; i<4; ++i, ++cp) {
+		data = (data << 8) | (*(uchar *)cp);
+	}
+	rc=write_word(info, wp, data);
+	return rc;
+}
+
+/*-----------------------------------------------------------------------
+ * Write a word to Flash, returns:
+ * 0 - OK
+ * 1 - write timeout
+ * 2 - Flash not erased
+ */
+static FLASH_WORD_SIZE *read_val = (FLASH_WORD_SIZE *)0x200000;
+
+static int write_word (flash_info_t *info, ulong dest, ulong data)
+{
+	volatile FLASH_WORD_SIZE *addr2 = (FLASH_WORD_SIZE *)(info->start[0]);
+	volatile FLASH_WORD_SIZE *dest2 = (FLASH_WORD_SIZE *)dest;
+ 	volatile FLASH_WORD_SIZE *data2 = (FLASH_WORD_SIZE *)&data;
+	ulong start;
+	int flag;
+	int i;
+
+	/* Check if Flash is (sufficiently) erased */
+	if ((*((volatile FLASH_WORD_SIZE *)dest) &
+		(FLASH_WORD_SIZE)data) != (FLASH_WORD_SIZE)data) {
+		return (2);
+	}
+	/* Disable interrupts which might cause a timeout here */
+	flag = disable_interrupts();
+	for (i=0; i<4/sizeof(FLASH_WORD_SIZE); i++)
+	{
+		if((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL){
+			/* intel style writting */
+			dest2[i] = (FLASH_WORD_SIZE)0x00500050;
+			dest2[i] = (FLASH_WORD_SIZE)0x00400040;
+			*read_val++ = data2[i];
+			dest2[i] = data2[i];
+			if (flag)
+				enable_interrupts();
+			/* data polling for D7 */
+			start = get_timer (0);
+			udelay(10);
+			while ((dest2[i] & (FLASH_WORD_SIZE)0x00800080) != (FLASH_WORD_SIZE)0x00800080)
+			{
+				if (get_timer(start) > CFG_FLASH_WRITE_TOUT)
+					return (1);
+			}
+			dest2[i] = (FLASH_WORD_SIZE)0x00FF00FF; /* return to read mode */
+			udelay(10);
+			dest2[i] = (FLASH_WORD_SIZE)0x00FF00FF; /* return to read mode */
+			if(dest2[i]!=data2[i])
+				printf("Error at %p 0x%04X != 0x%04X\n",&dest2[i],dest2[i],data2[i]);
+		}
+		else {
+			addr2[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA;
+			addr2[ADDR1] = (FLASH_WORD_SIZE)0x00550055;
+			addr2[ADDR0] = (FLASH_WORD_SIZE)0x00A000A0;
+			dest2[i] = data2[i];
+			/* re-enable interrupts if necessary */
+			if (flag)
+				enable_interrupts();
+			/* data polling for D7 */
+			start = get_timer (0);
+			while ((dest2[i] & (FLASH_WORD_SIZE)0x00800080) !=
+				(data2[i] & (FLASH_WORD_SIZE)0x00800080)) {
+				if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
+        				return (1);
+				}
+			}
+		}
+	}
+	return (0);
+}
+
+/*-----------------------------------------------------------------------
+ */