Initial revision

1 files changed, 1096 insertions, 0 deletions

diff --git a/board/esteem192e/flash.c b/board/esteem192e/flash.c
new file mode 100644
index 0000000000..55845fac11
--- /dev/null
+++ b/board/esteem192e/flash.c
@@ -0,0 +1,1096 @@
+/*
+ * (C) Copyright 2000
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <mpc8xx.h>
+
+flash_info_t	flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips	*/
+
+#ifdef CONFIG_FLASH_16BIT
+#define FLASH_WORD_SIZE	unsigned short
+#define	FLASH_ID_MASK	0xFFFF
+#else
+#define FLASH_WORD_SIZE unsigned long
+#define	FLASH_ID_MASK	0xFFFFFFFF
+#endif
+
+/*-----------------------------------------------------------------------
+ * Functions
+ */
+
+ulong flash_get_size (volatile FLASH_WORD_SIZE *addr, flash_info_t *info);
+#ifndef CONFIG_FLASH_16BIT
+static int write_word (flash_info_t *info, ulong dest, ulong data);
+#else
+static int write_short (flash_info_t *info, ulong dest, ushort data);
+#endif
+/*int flash_write (uchar *, ulong, ulong); */
+/*flash_info_t *addr2info (ulong);   */
+
+static void flash_get_offsets (ulong base, flash_info_t *info);
+
+/*-----------------------------------------------------------------------
+ */
+unsigned long flash_init (void)
+{
+	volatile immap_t     *immap  = (immap_t *)CFG_IMMR;
+	volatile memctl8xx_t *memctl = &immap->im_memctl;
+	unsigned long size_b0, size_b1;
+	int i;
+
+	/* 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((volatile FLASH_WORD_SIZE *)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);
+	}
+
+	size_b1 = flash_get_size((volatile FLASH_WORD_SIZE *)FLASH_BASE1_PRELIM,
+				 &flash_info[1]);
+
+	if (size_b1 > size_b0) {
+		printf ("## ERROR: "
+			"Bank 1 (0x%08lx = %ld MB) > Bank 0 (0x%08lx = %ld MB)\n",
+			size_b1, size_b1<<20,
+			size_b0, size_b0<<20
+		);
+		flash_info[0].flash_id	= FLASH_UNKNOWN;
+		flash_info[1].flash_id	= FLASH_UNKNOWN;
+		flash_info[0].sector_count	= -1;
+		flash_info[1].sector_count	= -1;
+		flash_info[0].size		= 0;
+		flash_info[1].size		= 0;
+		return (0);
+	}
+
+	/* Remap FLASH according to real size */
+	memctl->memc_or0 = CFG_OR_TIMING_FLASH | (-size_b0 & 0xFFFF8000);
+	memctl->memc_br0 = CFG_FLASH_BASE | 0x00000801; /*  (CFG_FLASH_BASE & BR_BA_MSK) | BR_MS_GPCM | BR_V;*/
+
+	/* Re-do sizing to get full correct info */
+
+	size_b0 = flash_get_size((volatile FLASH_WORD_SIZE *)CFG_FLASH_BASE,
+				 &flash_info[0]);
+	flash_get_offsets (CFG_FLASH_BASE, &flash_info[0]);
+
+#if CFG_MONITOR_BASE >= CFG_FLASH_BASE
+	/* monitor protection ON by default */
+	(void)flash_protect(FLAG_PROTECT_SET,
+			    CFG_MONITOR_BASE,
+			    CFG_MONITOR_BASE+CFG_MONITOR_LEN-1,
+			    &flash_info[0]);
+#endif
+
+	if (size_b1) {
+		memctl->memc_or1 = CFG_OR_TIMING_FLASH | (-size_b1 & 0xFFFF8000);
+		memctl->memc_br1 = (CFG_FLASH_BASE | 0x00000801) + (size_b0 & BR_BA_MSK);
+                              /*((CFG_FLASH_BASE + size_b0) & BR_BA_MSK) |
+				    BR_MS_GPCM | BR_V;*/
+
+		/* Re-do sizing to get full correct info */
+		size_b1 = flash_get_size((volatile FLASH_WORD_SIZE *)(CFG_FLASH_BASE + size_b0),
+					  &flash_info[1]);
+
+		flash_get_offsets (CFG_FLASH_BASE + size_b0, &flash_info[1]);
+
+#if CFG_MONITOR_BASE >= CFG_FLASH_BASE
+		/* monitor protection ON by default */
+		(void)flash_protect(FLAG_PROTECT_SET,
+				    CFG_MONITOR_BASE,
+				    CFG_MONITOR_BASE+CFG_MONITOR_LEN-1,
+				    &flash_info[1]);
+#endif
+	} else {
+		memctl->memc_br1 = 0;		/* invalidate bank */
+
+		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;
+
+	return (size_b0 + size_b1);
+}
+
+/*-----------------------------------------------------------------------
+ */
+static void flash_get_offsets (ulong base, flash_info_t *info)
+{
+	int i;
+
+	/* set up sector start adress table */
+	if (info->flash_id & FLASH_BTYPE) {
+             if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) {
+
+#ifndef CONFIG_FLASH_16BIT
+		/* set sector offsets for bottom boot block type	*/
+		info->start[0] = base + 0x00000000;
+		info->start[1] = base + 0x00004000;
+		info->start[2] = base + 0x00008000;
+		info->start[3] = base + 0x0000C000;
+		info->start[4] = base + 0x00010000;
+		info->start[5] = base + 0x00014000;
+		info->start[6] = base + 0x00018000;
+		info->start[7] = base + 0x0001C000;
+		for (i = 8; i < info->sector_count; i++) {
+			info->start[i] = base + (i * 0x00020000) - 0x000E0000;
+	        }
+               }
+             else {
+		/* set sector offsets for bottom boot block type	*/
+		info->start[0] = base + 0x00000000;
+		info->start[1] = base + 0x00008000;
+		info->start[2] = base + 0x0000C000;
+		info->start[3] = base + 0x00010000;
+		for (i = 4; i < info->sector_count; i++) {
+			info->start[i] = base + (i * 0x00020000) - 0x00060000;
+		}
+	       }
+#else
+		/* set sector offsets for bottom boot block type	*/
+		info->start[0] = base + 0x00000000;
+		info->start[1] = base + 0x00002000;
+		info->start[2] = base + 0x00004000;
+		info->start[3] = base + 0x00006000;
+		info->start[4] = base + 0x00008000;
+		info->start[5] = base + 0x0000A000;
+		info->start[6] = base + 0x0000C000;
+		info->start[7] = base + 0x0000E000;
+		for (i = 8; i < info->sector_count; i++) {
+			info->start[i] = base + (i * 0x00010000) - 0x00070000;
+	        }
+	       }
+             else {
+		/* 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;
+		}
+	       }
+#endif
+	} else {
+		/* set sector offsets for top boot block type		*/
+		i = info->sector_count - 1;
+             if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) {
+
+#ifndef CONFIG_FLASH_16BIT
+		info->start[i--] = base + info->size - 0x00004000;
+		info->start[i--] = base + info->size - 0x00008000;
+		info->start[i--] = base + info->size - 0x0000C000;
+		info->start[i--] = base + info->size - 0x00010000;
+		info->start[i--] = base + info->size - 0x00014000;
+		info->start[i--] = base + info->size - 0x00018000;
+		info->start[i--] = base + info->size - 0x0001C000;
+		for (; i >= 0; i--) {
+			info->start[i] = base + i * 0x00020000;
+		}
+
+               } else {
+
+		info->start[i--] = base + info->size - 0x00008000;
+		info->start[i--] = base + info->size - 0x0000C000;
+		info->start[i--] = base + info->size - 0x00010000;
+		for (; i >= 0; i--) {
+			info->start[i] = base + i * 0x00020000;
+		}
+	       }
+#else
+		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 * 0x00010000;
+		}
+
+               } 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;
+		}
+	       }
+#endif
+	}
+
+
+}
+
+/*-----------------------------------------------------------------------
+ */
+void flash_print_info  (flash_info_t *info)
+{
+	int i;
+	uchar *boottype;
+	uchar botboot[]=", bottom boot sect)\n";
+	uchar topboot[]=", top boot sector)\n";
+
+	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_STM:	printf ("STM ");		break;
+	case FLASH_MAN_INTEL:	printf ("INTEL ");		break;
+	default:		printf ("Unknown Vendor ");	break;
+	}
+
+	if (info->flash_id & 0x0001 ) {
+	boottype = botboot;
+	} else {
+	boottype = topboot;
+	}
+
+	switch (info->flash_id & FLASH_TYPEMASK) {
+	case FLASH_AM400B:	printf ("AM29LV400B (4 Mbit%s",boottype);
+				break;
+	case FLASH_AM400T:	printf ("AM29LV400T (4 Mbit%s",boottype);
+				break;
+	case FLASH_AM800B:	printf ("AM29LV800B (8 Mbit%s",boottype);
+				break;
+	case FLASH_AM800T:	printf ("AM29LV800T (8 Mbit%s",boottype);
+				break;
+	case FLASH_AM160B:	printf ("AM29LV160B (16 Mbit%s",boottype);
+				break;
+	case FLASH_AM160T:	printf ("AM29LV160T (16 Mbit%s",boottype);
+				break;
+	case FLASH_AM320B:	printf ("AM29LV320B (32 Mbit%s",boottype);
+				break;
+	case FLASH_AM320T:	printf ("AM29LV320T (32 Mbit%s",boottype);
+				break;
+	case FLASH_INTEL800B:	printf ("INTEL28F800B (8 Mbit%s",boottype);
+				break;
+	case FLASH_INTEL800T:	printf ("INTEL28F800T (8 Mbit%s",boottype);
+				break;
+	case FLASH_INTEL160B:	printf ("INTEL28F160B (16 Mbit%s",boottype);
+				break;
+	case FLASH_INTEL160T:	printf ("INTEL28F160T (16 Mbit%s",boottype);
+				break;
+	case FLASH_INTEL320B:	printf ("INTEL28F320B (32 Mbit%s",boottype);
+				break;
+	case FLASH_INTEL320T:	printf ("INTEL28F320T (32 Mbit%s",boottype);
+				break;
+
+#if 0 /* enable when devices are available */
+
+	case FLASH_INTEL640B:	printf ("INTEL28F640B (64 Mbit%s",boottype);
+				break;
+	case FLASH_INTEL640T:	printf ("INTEL28F640T (64 Mbit%s",boottype);
+				break;
+#endif
+
+	default:		printf ("Unknown Chip Type\n");
+				break;
+	}
+
+	printf ("  Size: %ld MB in %d Sectors\n",
+		info->size >> 20, info->sector_count);
+
+	printf ("  Sector Start Addresses:");
+	for (i=0; i<info->sector_count; ++i) {
+		if ((i % 5) == 0)
+			printf ("\n   ");
+		printf (" %08lX%s",
+			info->start[i],
+			info->protect[i] ? " (RO)" : "     "
+		);
+	}
+	printf ("\n");
+	return;
+}
+
+/*-----------------------------------------------------------------------
+ */
+
+
+/*-----------------------------------------------------------------------
+ */
+
+/*
+ * The following code cannot be run from FLASH!
+ */
+ulong flash_get_size (volatile FLASH_WORD_SIZE *addr, flash_info_t *info)
+{
+	short i;
+	ulong base = (ulong)addr;
+	FLASH_WORD_SIZE value;
+
+	/* Write auto select command: read Manufacturer ID */
+
+
+#ifndef CONFIG_FLASH_16BIT
+
+	/*
+	 * Note: if it is an AMD flash and the word at addr[0000]
+         * is 0x00890089 this routine will think it is an Intel
+         * flash device and may(most likely) cause trouble.
+	 */
+
+	addr[0x0000] = 0x00900090;
+	if(addr[0x0000] != 0x00890089){
+		addr[0x0555] = 0x00AA00AA;
+		addr[0x02AA] = 0x00550055;
+		addr[0x0555] = 0x00900090;
+#else
+
+	/*
+	 * Note: if it is an AMD flash and the word at addr[0000]
+         * is 0x0089 this routine will think it is an Intel
+         * flash device and may(most likely) cause trouble.
+	 */
+
+	addr[0x0000] = 0x0090;
+
+	if(addr[0x0000] != 0x0089){
+		addr[0x0555] = 0x00AA;
+		addr[0x02AA] = 0x0055;
+		addr[0x0555] = 0x0090;
+#endif
+	}
+	value = addr[0];
+
+	switch (value) {
+	case (AMD_MANUFACT & FLASH_ID_MASK):
+		info->flash_id = FLASH_MAN_AMD;
+		break;
+	case (FUJ_MANUFACT & FLASH_ID_MASK):
+		info->flash_id = FLASH_MAN_FUJ;
+		break;
+	case (STM_MANUFACT & FLASH_ID_MASK):
+		info->flash_id = FLASH_MAN_STM;
+		break;
+	case (SST_MANUFACT & FLASH_ID_MASK):
+		info->flash_id = FLASH_MAN_SST;
+		break;
+	case (INTEL_MANUFACT & FLASH_ID_MASK):
+		info->flash_id = FLASH_MAN_INTEL;
+		break;
+	default:
+		info->flash_id = FLASH_UNKNOWN;
+		info->sector_count = 0;
+		info->size = 0;
+		return (0);			/* no or unknown flash	*/
+
+	}
+
+	value = addr[1];			/* device ID		*/
+
+	switch (value) {
+
+	case (AMD_ID_LV400T & FLASH_ID_MASK):
+		info->flash_id += FLASH_AM400T;
+		info->sector_count = 11;
+		info->size = 0x00100000;
+		break;				/* => 1 MB		*/
+
+	case (AMD_ID_LV400B & FLASH_ID_MASK):
+		info->flash_id += FLASH_AM400B;
+		info->sector_count = 11;
+		info->size = 0x00100000;
+		break;				/* => 1 MB		*/
+
+	case (AMD_ID_LV800T & FLASH_ID_MASK):
+		info->flash_id += FLASH_AM800T;
+		info->sector_count = 19;
+		info->size = 0x00200000;
+		break;				/* => 2 MB		*/
+
+	case (AMD_ID_LV800B & FLASH_ID_MASK):
+		info->flash_id += FLASH_AM800B;
+		info->sector_count = 19;
+		info->size = 0x00200000;
+		break;				/* => 2 MB		*/
+
+	case (AMD_ID_LV160T & FLASH_ID_MASK):
+		info->flash_id += FLASH_AM160T;
+		info->sector_count = 35;
+		info->size = 0x00400000;
+		break;				/* => 4 MB		*/
+
+	case (AMD_ID_LV160B & FLASH_ID_MASK):
+		info->flash_id += FLASH_AM160B;
+		info->sector_count = 35;
+		info->size = 0x00400000;
+		break;				/* => 4 MB		*/
+#if 0	/* enable when device IDs are available */
+	case (AMD_ID_LV320T & FLASH_ID_MASK):
+		info->flash_id += FLASH_AM320T;
+		info->sector_count = 67;
+		info->size = 0x00800000;
+		break;				/* => 8 MB		*/
+
+	case (AMD_ID_LV320B & FLASH_ID_MASK):
+		info->flash_id += FLASH_AM320B;
+		info->sector_count = 67;
+		info->size = 0x00800000;
+		break;				/* => 8 MB		*/
+#endif
+
+	case (INTEL_ID_28F800B3T & FLASH_ID_MASK):
+		info->flash_id += FLASH_INTEL800T;
+		info->sector_count = 23;
+		info->size = 0x00200000;
+		break;				/* => 2 MB		*/
+
+	case (INTEL_ID_28F800B3B & FLASH_ID_MASK):
+		info->flash_id += FLASH_INTEL800B;
+		info->sector_count = 23;
+		info->size = 0x00200000;
+		break;				/* => 2 MB		*/
+
+	case (INTEL_ID_28F160B3T & FLASH_ID_MASK):
+		info->flash_id += FLASH_INTEL160T;
+		info->sector_count = 39;
+		info->size = 0x00400000;
+		break;				/* => 4 MB		*/
+
+	case (INTEL_ID_28F160B3B & FLASH_ID_MASK):
+		info->flash_id += FLASH_INTEL160B;
+		info->sector_count = 39;
+		info->size = 0x00400000;
+		break;				/* => 4 MB		*/
+
+	case (INTEL_ID_28F320B3T & FLASH_ID_MASK):
+		info->flash_id += FLASH_INTEL320T;
+		info->sector_count = 71;
+		info->size = 0x00800000;
+		break;				/* => 8 MB		*/
+
+	case (INTEL_ID_28F320B3B & FLASH_ID_MASK):
+		info->flash_id += FLASH_AM320B;
+		info->sector_count = 71;
+		info->size = 0x00800000;
+		break;				/* => 8 MB		*/
+
+#if 0 /* enable when devices are available */
+	case (INTEL_ID_28F320B3T & FLASH_ID_MASK):
+		info->flash_id += FLASH_INTEL320T;
+		info->sector_count = 135;
+		info->size = 0x01000000;
+		break;				/* => 16 MB		*/
+
+	case (INTEL_ID_28F320B3B & FLASH_ID_MASK):
+		info->flash_id += FLASH_AM320B;
+		info->sector_count = 135;
+		info->size = 0x01000000;
+		break;				/* => 16 MB		*/
+#endif
+	default:
+		info->flash_id = FLASH_UNKNOWN;
+		return (0);			/* => no or unknown flash */
+
+	}
+
+	/* set up sector start adress table */
+	if (info->flash_id & FLASH_BTYPE) {
+             if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) {
+
+#ifndef CONFIG_FLASH_16BIT
+		/* set sector offsets for bottom boot block type	*/
+		info->start[0] = base + 0x00000000;
+		info->start[1] = base + 0x00004000;
+		info->start[2] = base + 0x00008000;
+		info->start[3] = base + 0x0000C000;
+		info->start[4] = base + 0x00010000;
+		info->start[5] = base + 0x00014000;
+		info->start[6] = base + 0x00018000;
+		info->start[7] = base + 0x0001C000;
+		for (i = 8; i < info->sector_count; i++) {
+			info->start[i] = base + (i * 0x00020000) - 0x000E0000;
+	        }
+               }
+             else {
+		/* set sector offsets for bottom boot block type	*/
+		info->start[0] = base + 0x00000000;
+		info->start[1] = base + 0x00008000;
+		info->start[2] = base + 0x0000C000;
+		info->start[3] = base + 0x00010000;
+		for (i = 4; i < info->sector_count; i++) {
+			info->start[i] = base + (i * 0x00020000) - 0x00060000;
+		}
+	       }
+#else
+		/* set sector offsets for bottom boot block type	*/
+		info->start[0] = base + 0x00000000;
+		info->start[1] = base + 0x00002000;
+		info->start[2] = base + 0x00004000;
+		info->start[3] = base + 0x00006000;
+		info->start[4] = base + 0x00008000;
+		info->start[5] = base + 0x0000A000;
+		info->start[6] = base + 0x0000C000;
+		info->start[7] = base + 0x0000E000;
+		for (i = 8; i < info->sector_count; i++) {
+			info->start[i] = base + (i * 0x00010000) - 0x00070000;
+	        }
+	       }
+             else {
+		/* 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;
+		}
+	       }
+#endif
+	} else {
+		/* set sector offsets for top boot block type		*/
+		i = info->sector_count - 1;
+             if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) {
+
+#ifndef CONFIG_FLASH_16BIT
+		info->start[i--] = base + info->size - 0x00004000;
+		info->start[i--] = base + info->size - 0x00008000;
+		info->start[i--] = base + info->size - 0x0000C000;
+		info->start[i--] = base + info->size - 0x00010000;
+		info->start[i--] = base + info->size - 0x00014000;
+		info->start[i--] = base + info->size - 0x00018000;
+		info->start[i--] = base + info->size - 0x0001C000;
+		for (; i >= 0; i--) {
+			info->start[i] = base + i * 0x00020000;
+		}
+
+               } else {
+
+		info->start[i--] = base + info->size - 0x00008000;
+		info->start[i--] = base + info->size - 0x0000C000;
+		info->start[i--] = base + info->size - 0x00010000;
+		for (; i >= 0; i--) {
+			info->start[i] = base + i * 0x00020000;
+		}
+	       }
+#else
+		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 * 0x00010000;
+		}
+
+               } 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;
+		}
+	       }
+#endif
+	}
+
+	/* 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 */
+		addr = (volatile FLASH_WORD_SIZE *)(info->start[i]);
+		info->protect[i] = addr[2] & 1;
+	}
+
+	/*
+	 * Prevent writes to uninitialized FLASH.
+	 */
+	if (info->flash_id != FLASH_UNKNOWN) {
+		addr = (volatile FLASH_WORD_SIZE *)info->start[0];
+		if( (info->flash_id & 0xFF00) == FLASH_MAN_INTEL){
+		   *addr = (0x00F000F0 & FLASH_ID_MASK);	/* reset bank */
+		} else {
+		   *addr = (0x00FF00FF & FLASH_ID_MASK);	/* reset bank */
+		}
+	}
+
+	return (info->size);
+}
+
+
+/*-----------------------------------------------------------------------
+ */
+
+int	flash_erase (flash_info_t *info, int s_first, int s_last)
+{
+
+	volatile FLASH_WORD_SIZE *addr=(volatile FLASH_WORD_SIZE*)(info->start[0]);
+	int flag, prot, sect, l_sect, barf;
+	ulong start, now, last;
+	int rcode = 0;
+
+	if ((s_first < 0) || (s_first > s_last)) {
+		if (info->flash_id == FLASH_UNKNOWN) {
+			printf ("- missing\n");
+		} else {
+			printf ("- no sectors to erase\n");
+		}
+		return 1;
+	}
+
+	if ((info->flash_id == FLASH_UNKNOWN) ||
+	    ((info->flash_id > FLASH_AMD_COMP) &&
+             ( (info->flash_id & FLASH_VENDMASK) != FLASH_MAN_INTEL ) ) ){
+		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();
+    if(info->flash_id < FLASH_AMD_COMP) {
+#ifndef CONFIG_FLASH_16BIT
+	addr[0x0555] = 0x00AA00AA;
+	addr[0x02AA] = 0x00550055;
+	addr[0x0555] = 0x00800080;
+	addr[0x0555] = 0x00AA00AA;
+	addr[0x02AA] = 0x00550055;
+#else
+	addr[0x0555] = 0x00AA;
+	addr[0x02AA] = 0x0055;
+	addr[0x0555] = 0x0080;
+	addr[0x0555] = 0x00AA;
+	addr[0x02AA] = 0x0055;
+#endif
+	/* Start erase on unprotected sectors */
+	for (sect = s_first; sect<=s_last; sect++) {
+		if (info->protect[sect] == 0) {	/* not protected */
+			addr = (volatile FLASH_WORD_SIZE *)(info->start[sect]);
+			addr[0] = (0x00300030 & FLASH_ID_MASK);
+			l_sect = sect;
+		}
+	}
+
+	/* re-enable interrupts if necessary */
+	if (flag)
+		enable_interrupts();
+
+	/* wait at least 80us - let's wait 1 ms */
+	udelay (1000);
+
+	/*
+	 * We wait for the last triggered sector
+	 */
+	if (l_sect < 0)
+		goto DONE;
+
+	start = get_timer (0);
+	last  = start;
+	addr = (volatile FLASH_WORD_SIZE*)(info->start[l_sect]);
+	while ((addr[0] & (0x00800080&FLASH_ID_MASK)) !=
+			  (0x00800080&FLASH_ID_MASK)  )
+	{
+		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 */
+			serial_putc ('.');
+			last = now;
+		}
+	}
+
+DONE:
+	/* reset to read mode */
+	addr = (volatile FLASH_WORD_SIZE *)info->start[0];
+	addr[0] = (0x00F000F0 & FLASH_ID_MASK);	/* reset bank */
+    } else {
+
+
+	for (sect = s_first; sect<=s_last; sect++) {
+		if (info->protect[sect] == 0) {	/* not protected */
+			barf = 0;
+#ifndef CONFIG_FLASH_16BIT
+			addr = (vu_long*)(info->start[sect]);
+			addr[0] = 0x00200020;
+			addr[0] = 0x00D000D0;
+			while(!(addr[0] & 0x00800080));	/* wait for error or finish */
+			if( addr[0] & 0x003A003A) {	/* check for error */
+				barf = addr[0] & 0x003A0000;
+				if( barf ) {
+					barf >>=16;
+				} else {
+					barf = addr[0] & 0x0000003A;
+				}
+			}
+#else
+			addr = (vu_short*)(info->start[sect]);
+			addr[0] = 0x0020;
+			addr[0] = 0x00D0;
+			while(!(addr[0] & 0x0080));	/* wait for error or finish */
+			if( addr[0] & 0x003A)	/* check for error */
+				barf = addr[0] & 0x003A;
+#endif
+			if(barf) {
+				printf("\nFlash error in sector at %lx\n",(unsigned long)addr);
+				if(barf & 0x0002) printf("Block locked, not erased.\n");
+				if((barf & 0x0030) == 0x0030)
+					printf("Command Sequence error.\n");
+				if((barf & 0x0030) == 0x0020)
+					printf("Block Erase error.\n");
+				if(barf & 0x0008) printf("Vpp Low error.\n");
+				rcode = 1;
+			} else printf(".");
+			l_sect = sect;
+		}
+	addr = (volatile FLASH_WORD_SIZE *)info->start[0];
+	addr[0] = (0x00FF00FF & FLASH_ID_MASK);	/* reset bank */
+
+	}
+
+    }
+	printf (" done\n");
+	return rcode;
+}
+
+/*-----------------------------------------------------------------------
+ */
+
+/*-----------------------------------------------------------------------
+ * Copy memory to flash, returns:
+ * 0 - OK
+ * 1 - write timeout
+ * 2 - Flash not erased
+ */
+
+int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
+{
+#ifndef CONFIG_FLASH_16BIT
+	ulong cp, wp, data;
+	int l;
+#else
+	ulong cp, wp;
+	ushort data;
+#endif
+	int i, rc;
+
+#ifndef CONFIG_FLASH_16BIT
+
+
+	wp = (addr & ~3);	/* get lower word aligned address */
+
+	/*
+	 * handle unaligned start bytes
+	 */
+	if ((l = addr - wp) != 0) {
+		data = 0;
+		for (i=0, cp=wp; i<l; ++i, ++cp) {
+			data = (data << 8) | (*(uchar *)cp);
+		}
+		for (; i<4 && cnt>0; ++i) {
+			data = (data << 8) | *src++;
+			--cnt;
+			++cp;
+		}
+		for (; cnt==0 && i<4; ++i, ++cp) {
+			data = (data << 8) | (*(uchar *)cp);
+		}
+
+		if ((rc = write_word(info, wp, data)) != 0) {
+			return (rc);
+		}
+		wp += 4;
+	}
+
+	/*
+	 * handle word aligned part
+	 */
+	while (cnt >= 4) {
+		data = 0;
+		for (i=0; i<4; ++i) {
+			data = (data << 8) | *src++;
+		}
+		if ((rc = write_word(info, wp, data)) != 0) {
+			return (rc);
+		}
+		wp  += 4;
+		cnt -= 4;
+	}
+
+	if (cnt == 0) {
+		return (0);
+	}
+
+	/*
+	 * handle unaligned tail bytes
+	 */
+	data = 0;
+	for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) {
+		data = (data << 8) | *src++;
+		--cnt;
+	}
+	for (; i<4; ++i, ++cp) {
+		data = (data << 8) | (*(uchar *)cp);
+	}
+
+	return (write_word(info, wp, data));
+
+#else
+	wp = (addr & ~1);	/* get lower word aligned address */
+
+	/*
+	 * handle unaligned start byte
+	 */
+	if (addr - wp) {
+		data = 0;
+		data = (data << 8) | *src++;
+		--cnt;
+		if ((rc = write_short(info, wp, data)) != 0) {
+			return (rc);
+		}
+		wp += 2;
+	}
+
+	/*
+	 * handle word aligned part
+	 */
+/*	l = 0; used for debuging  */
+	while (cnt >= 2) {
+		data = 0;
+		for (i=0; i<2; ++i) {
+			data = (data << 8) | *src++;
+		}
+
+/*		if(!l){
+			printf("%x",data);
+			l = 1;
+		}  used for debuging */
+
+		if ((rc = write_short(info, wp, data)) != 0) {
+			return (rc);
+		}
+		wp  += 2;
+		cnt -= 2;
+	}
+
+	if (cnt == 0) {
+		return (0);
+	}
+
+	/*
+	 * handle unaligned tail bytes
+	 */
+	data = 0;
+	for (i=0, cp=wp; i<2 && cnt>0; ++i, ++cp) {
+		data = (data << 8) | *src++;
+		--cnt;
+	}
+	for (; i<2; ++i, ++cp) {
+		data = (data << 8) | (*(uchar *)cp);
+	}
+
+	return (write_short(info, wp, data));
+
+
+#endif
+}
+
+/*-----------------------------------------------------------------------
+ * Write a word to Flash, returns:
+ * 0 - OK
+ * 1 - write timeout
+ * 2 - Flash not erased
+ */
+#ifndef CONFIG_FLASH_16BIT
+static int write_word (flash_info_t *info, ulong dest, ulong data)
+{
+	vu_long *addr = (vu_long*)(info->start[0]);
+	ulong start,barf;
+	int flag;
+
+
+	/* Check if Flash is (sufficiently) erased */
+	if ((*((vu_long *)dest) & data) != data) {
+		return (2);
+	}
+
+	/* Disable interrupts which might cause a timeout here */
+	flag = disable_interrupts();
+
+     if(info->flash_id > FLASH_AMD_COMP) {
+	/* AMD stuff */
+	addr[0x0555] = 0x00AA00AA;
+	addr[0x02AA] = 0x00550055;
+	addr[0x0555] = 0x00A000A0;
+     } else {
+	/* intel stuff */
+	*addr = 0x00400040;
+     }
+	*((vu_long *)dest) = data;
+
+	/* re-enable interrupts if necessary */
+	if (flag)
+		enable_interrupts();
+
+	/* data polling for D7 */
+	start = get_timer (0);
+
+     if(info->flash_id > FLASH_AMD_COMP) {
+
+	while ((*((vu_long *)dest) & 0x00800080) != (data & 0x00800080)) {
+		if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
+			return (1);
+		}
+	}
+
+     } else {
+
+	while(!(addr[0] & 0x00800080)){  	/* wait for error or finish */
+		if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
+			return (1);
+	}
+
+	if( addr[0] & 0x003A003A) {	/* check for error */
+		barf = addr[0] & 0x003A0000;
+		if( barf ) {
+			barf >>=16;
+		} else {
+		        barf = addr[0] & 0x0000003A;
+		}
+		printf("\nFlash write error at address %lx\n",(unsigned long)dest);
+		if(barf & 0x0002) printf("Block locked, not erased.\n");
+		if(barf & 0x0010) printf("Programming error.\n");
+		if(barf & 0x0008) printf("Vpp Low error.\n");
+	  	return(2);
+	}
+
+
+     }
+
+	return (0);
+
+}
+
+#else
+
+static int write_short (flash_info_t *info, ulong dest, ushort data)
+{
+	vu_short *addr = (vu_short*)(info->start[0]);
+	ulong start,barf;
+	int flag;
+
+	/* Check if Flash is (sufficiently) erased */
+	if ((*((vu_short *)dest) & data) != data) {
+		return (2);
+	}
+
+	/* Disable interrupts which might cause a timeout here */
+	flag = disable_interrupts();
+
+     if(info->flash_id < FLASH_AMD_COMP) {
+	/* AMD stuff */
+	addr[0x0555] = 0x00AA;
+	addr[0x02AA] = 0x0055;
+	addr[0x0555] = 0x00A0;
+     } else {
+	/* intel stuff */
+        *addr = 0x00D0;
+	*addr = 0x0040;
+     }
+	*((vu_short *)dest) = data;
+
+	/* re-enable interrupts if necessary */
+	if (flag)
+		enable_interrupts();
+
+	/* data polling for D7 */
+	start = get_timer (0);
+
+     if(info->flash_id < FLASH_AMD_COMP) {
+          /* AMD stuff */
+	while ((*((vu_short *)dest) & 0x0080) != (data & 0x0080)) {
+		if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
+			return (1);
+		}
+	}
+
+     } else {
+	/* intel stuff */
+	while(!(addr[0] & 0x0080)){  	/* wait for error or finish */
+		if (get_timer(start) > CFG_FLASH_WRITE_TOUT) return (1);
+	}
+
+	if( addr[0] & 0x003A) {	/* check for error */
+		barf = addr[0] & 0x003A;
+		printf("\nFlash write error at address %lx\n",(unsigned long)dest);
+		if(barf & 0x0002) printf("Block locked, not erased.\n");
+		if(barf & 0x0010) printf("Programming error.\n");
+		if(barf & 0x0008) printf("Vpp Low error.\n");
+	  	return(2);
+	}
+	*addr = 0x00B0;
+	*addr = 0x0070;
+	while(!(addr[0] & 0x0080)){  	/* wait for error or finish */
+		if (get_timer(start) > CFG_FLASH_WRITE_TOUT) return (1);
+	}
+
+	*addr = 0x00FF;
+
+     }
+
+	return (0);
+
+}
+
+
+#endif
+
+/*-----------------------------------------------------------------------
+ */
+