Merge branch 'master' of /home/stefan/git/u-boot/u-boot

6 files changed, 358 insertions, 140 deletions

diff --git a/common/Makefile b/common/Makefile
index 4287108..ecf755f 100644
--- a/common/Makefile
+++ b/common/Makefile
@@ -98,6 +98,7 @@ COBJS-$(CONFIG_CMD_TERMINAL) += cmd_terminal.o
 COBJS-$(CONFIG_CMD_UNIVERSE) += cmd_universe.o
 COBJS-$(CONFIG_CMD_USB) += cmd_usb.o
 COBJS-$(CONFIG_CMD_XIMG) += cmd_ximg.o
+COBJS-$(CONFIG_YAFFS2) += cmd_yaffs2.o
 COBJS-y += cmd_vfd.o
 COBJS-y += command.o
 COBJS-y += console.o
diff --git a/common/cmd_doc.c b/common/cmd_doc.c
index d7b2f53..a55ca41 100644
--- a/common/cmd_doc.c
+++ b/common/cmd_doc.c
@@ -14,6 +14,12 @@
 #include <linux/mtd/nftl.h>
 #include <linux/mtd/doc2000.h>
 
+/*
+ * ! BROKEN !
+ *
+ * TODO: must be implemented and tested by someone with HW
+ */
+#if 0
 #ifdef CFG_DOC_SUPPORT_2000
 #define DoC_is_2000(doc) (doc->ChipID == DOC_ChipID_Doc2k)
 #else
@@ -1629,3 +1635,6 @@ void doc_probe(unsigned long physadr)
 		puts ("No DiskOnChip found\n");
 	}
 }
+#else
+void doc_probe(unsigned long physadr) {}
+#endif
diff --git a/common/cmd_nand.c b/common/cmd_nand.c
index 9e38bf7..520c152 100644
--- a/common/cmd_nand.c
+++ b/common/cmd_nand.c
@@ -18,6 +18,7 @@
  *
  */
 #include <common.h>
+#include <linux/mtd/mtd.h>
 
 #if defined(CONFIG_CMD_NAND)
 
@@ -34,48 +35,58 @@
 int mtdparts_init(void);
 int id_parse(const char *id, const char **ret_id, u8 *dev_type, u8 *dev_num);
 int find_dev_and_part(const char *id, struct mtd_device **dev,
-		u8 *part_num, struct part_info **part);
+                      u8 *part_num, struct part_info **part);
 #endif
 
-static int nand_dump_oob(nand_info_t *nand, ulong off)
-{
-	return 0;
-}
-
-static int nand_dump(nand_info_t *nand, ulong off)
+static int nand_dump(nand_info_t *nand, ulong off, int only_oob)
 {
 	int i;
-	u_char *buf, *p;
+	u_char *datbuf, *oobbuf, *p;
 
-	buf = malloc(nand->oobblock + nand->oobsize);
-	if (!buf) {
+	datbuf = malloc(nand->writesize + nand->oobsize);
+	oobbuf = malloc(nand->oobsize);
+	if (!datbuf || !oobbuf) {
 		puts("No memory for page buffer\n");
 		return 1;
 	}
-	off &= ~(nand->oobblock - 1);
-	i = nand_read_raw(nand, buf, off, nand->oobblock, nand->oobsize);
+	off &= ~(nand->writesize - 1);
+	loff_t addr = (loff_t) off;
+	struct mtd_oob_ops ops;
+	memset(&ops, 0, sizeof(ops));
+	ops.datbuf = datbuf;
+	ops.oobbuf = oobbuf; /* must exist, but oob data will be appended to ops.datbuf */
+	ops.len = nand->writesize;
+	ops.ooblen = nand->oobsize;
+	ops.mode = MTD_OOB_RAW;
+	i = nand->read_oob(nand, addr, &ops);
 	if (i < 0) {
 		printf("Error (%d) reading page %08lx\n", i, off);
-		free(buf);
+		free(datbuf);
+		free(oobbuf);
 		return 1;
 	}
 	printf("Page %08lx dump:\n", off);
-	i = nand->oobblock >> 4; p = buf;
+	i = nand->writesize >> 4;
+	p = datbuf;
+		
 	while (i--) {
-		printf( "\t%02x %02x %02x %02x %02x %02x %02x %02x"
-			"  %02x %02x %02x %02x %02x %02x %02x %02x\n",
-			p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7],
-			p[8], p[9], p[10], p[11], p[12], p[13], p[14], p[15]);
+		if (!only_oob)
+			printf("\t%02x %02x %02x %02x %02x %02x %02x %02x"
+			       "  %02x %02x %02x %02x %02x %02x %02x %02x\n",
+			       p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7],
+			       p[8], p[9], p[10], p[11], p[12], p[13], p[14],
+			       p[15]);
 		p += 16;
 	}
 	puts("OOB:\n");
 	i = nand->oobsize >> 3;
 	while (i--) {
-		printf( "\t%02x %02x %02x %02x %02x %02x %02x %02x\n",
-			p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7]);
+		printf("\t%02x %02x %02x %02x %02x %02x %02x %02x\n",
+		       p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7]);
 		p += 8;
 	}
-	free(buf);
+	free(datbuf);
+	free(oobbuf);
 
 	return 0;
 }
@@ -155,7 +166,7 @@ out:
 
 int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 {
-	int i, dev, ret;
+	int i, dev, ret = 0;
 	ulong addr, off;
 	size_t size;
 	char *cmd, *s;
@@ -182,8 +193,8 @@ int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 		for (i = 0; i < CFG_MAX_NAND_DEVICE; i++) {
 			if (nand_info[i].name)
 				printf("Device %d: %s, sector size %u KiB\n",
-					i, nand_info[i].name,
-					nand_info[i].erasesize >> 10);
+ 				       i, nand_info[i].name,
+				       nand_info[i].erasesize >> 10);
 		}
 		return 0;
 	}
@@ -196,7 +207,7 @@ int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 				puts("\nno devices available\n");
 			else
 				printf("\nDevice %d: %s\n", nand_curr_device,
-					nand_info[nand_curr_device].name);
+				       nand_info[nand_curr_device].name);
 			return 0;
 		}
 		dev = (int)simple_strtoul(argv[2], NULL, 10);
@@ -299,15 +310,14 @@ int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 		off = (int)simple_strtoul(argv[2], NULL, 16);
 
 		if (s != NULL && strcmp(s, ".oob") == 0)
-			ret = nand_dump_oob(nand, off);
+			ret = nand_dump(nand, off, 1);
 		else
-			ret = nand_dump(nand, off);
+			ret = nand_dump(nand, off, 0);
 
 		return ret == 0 ? 1 : 0;
 
 	}
 
-	/* read write */
 	if (strncmp(cmd, "read", 4) == 0 || strncmp(cmd, "write", 5) == 0) {
 		int read;
 
@@ -322,43 +332,29 @@ int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 			return 1;
 
 		s = strchr(cmd, '.');
-		if (s != NULL &&
-		    (!strcmp(s, ".jffs2") || !strcmp(s, ".e") || !strcmp(s, ".i"))) {
-			if (read) {
-				/* read */
-				nand_read_options_t opts;
-				memset(&opts, 0, sizeof(opts));
-				opts.buffer	= (u_char*) addr;
-				opts.length	= size;
-				opts.offset	= off;
-				opts.quiet      = quiet;
-				ret = nand_read_opts(nand, &opts);
-			} else {
-				/* write */
-				nand_write_options_t opts;
-				memset(&opts, 0, sizeof(opts));
-				opts.buffer	= (u_char*) addr;
-				opts.length	= size;
-				opts.offset	= off;
-				/* opts.forcejffs2 = 1; */
-				opts.pad	= 1;
-				opts.blockalign = 1;
-				opts.quiet      = quiet;
-				ret = nand_write_opts(nand, &opts);
-			}
-		} else if (s != NULL && !strcmp(s, ".oob")) {
-			/* read out-of-band data */
+		if (!s || !strcmp(s, ".jffs2") ||
+		    !strcmp(s, ".e") || !strcmp(s, ".i")) {
 			if (read)
-				ret = nand->read_oob(nand, off, size, &size,
-						     (u_char *) addr);
+				ret = nand_read_skip_bad(nand, off, &size,
+				                         (u_char *)addr);
 			else
-				ret = nand->write_oob(nand, off, size, &size,
-						      (u_char *) addr);
-		} else {
+				ret = nand_write_skip_bad(nand, off, &size,
+				                          (u_char *)addr);
+		} else if (s != NULL && !strcmp(s, ".oob")) {
+			/* out-of-band data */
+			mtd_oob_ops_t ops = {
+				.oobbuf = (u8 *)addr,
+				.ooblen = size,
+				.mode = MTD_OOB_RAW
+			};
+
 			if (read)
-				ret = nand_read(nand, off, &size, (u_char *)addr);
+				ret = nand->read_oob(nand, off, &ops);
 			else
-				ret = nand_write(nand, off, &size, (u_char *)addr);
+				ret = nand->write_oob(nand, off, &ops);
+		} else {
+			printf("Unknown nand command suffix '%s'.\n", s);
+			return 1;
 		}
 
 		printf(" %d bytes %s: %s\n", size,
@@ -381,6 +377,7 @@ int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 		}
 		return 1;
 	}
+
 	if (strcmp(cmd, "biterr") == 0) {
 		/* todo */
 		return 1;
@@ -395,7 +392,12 @@ int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 			if (!strcmp("status", argv[2]))
 				status = 1;
 		}
-
+/*
+ * ! BROKEN !
+ *
+ * TODO: must be implemented and tested by someone with HW
+ */
+#if 0
 		if (status) {
 			ulong block_start = 0;
 			ulong off;
@@ -406,28 +408,28 @@ int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 			nand_chip->cmdfunc (nand, NAND_CMD_STATUS, -1, -1);
 			printf("device is %swrite protected\n",
 			       (nand_chip->read_byte(nand) & 0x80 ?
-				"NOT " : "" ) );
+			       "NOT " : ""));
 
-			for (off = 0; off < nand->size; off += nand->oobblock) {
+			for (off = 0; off < nand->size; off += nand->writesize) {
 				int s = nand_get_lock_status(nand, off);
 
 				/* print message only if status has changed
 				 * or at end of chip
 				 */
-				if (off == nand->size - nand->oobblock
+				if (off == nand->size - nand->writesize
 				    || (s != last_status && off != 0))	{
 
-					printf("%08lx - %08lx: %8lu pages %s%s%s\n",
+					printf("%08lx - %08lx: %8d pages %s%s%s\n",
 					       block_start,
 					       off-1,
-					       (off-block_start)/nand->oobblock,
+					       (off-block_start)/nand->writesize,
 					       ((last_status & NAND_LOCK_STATUS_TIGHT) ? "TIGHT " : ""),
 					       ((last_status & NAND_LOCK_STATUS_LOCK) ? "LOCK " : ""),
 					       ((last_status & NAND_LOCK_STATUS_UNLOCK) ? "UNLOCK " : ""));
 				}
 
 				last_status = s;
-		       }
+			}
 		} else {
 			if (!nand_lock(nand, tight)) {
 				puts("NAND flash successfully locked\n");
@@ -436,6 +438,7 @@ int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 				return 1;
 			}
 		}
+#endif
 		return 0;
 	}
 
@@ -443,6 +446,12 @@ int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 		if (arg_off_size(argc - 2, argv + 2, nand, &off, &size) < 0)
 			return 1;
 
+/*
+ * ! BROKEN !
+ *
+ * TODO: must be implemented and tested by someone with HW
+ */
+#if 0
 		if (!nand_unlock(nand, off, size)) {
 			puts("NAND flash successfully unlocked\n");
 		} else {
@@ -450,6 +459,7 @@ int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 			     "write and erase will probably fail\n");
 			return 1;
 		}
+#endif
 		return 0;
 	}
 
@@ -459,54 +469,47 @@ usage:
 }
 
 U_BOOT_CMD(nand, 5, 1, do_nand,
-	"nand    - NAND sub-system\n",
-	"info                  - show available NAND devices\n"
-	"nand device [dev]     - show or set current device\n"
-	"nand read[.jffs2]     - addr off|partition size\n"
-	"nand write[.jffs2]    - addr off|partition size - read/write `size' bytes starting\n"
-	"    at offset `off' to/from memory address `addr'\n"
-	"nand erase [clean] [off size] - erase `size' bytes from\n"
-	"    offset `off' (entire device if not specified)\n"
-	"nand bad - show bad blocks\n"
-	"nand dump[.oob] off - dump page\n"
-	"nand scrub - really clean NAND erasing bad blocks (UNSAFE)\n"
-	"nand markbad off - mark bad block at offset (UNSAFE)\n"
-	"nand biterr off - make a bit error at offset (UNSAFE)\n"
-	"nand lock [tight] [status] - bring nand to lock state or display locked pages\n"
-	"nand unlock [offset] [size] - unlock section\n");
+           "nand - NAND sub-system\n",
+           "info - show available NAND devices\n"
+           "nand device [dev] - show or set current device\n"
+           "nand read - addr off|partition size\n"
+           "nand write - addr off|partition size\n"
+           "    read/write 'size' bytes starting at offset 'off'\n"
+           "    to/from memory address 'addr', skipping bad blocks.\n"
+           "nand erase [clean] [off size] - erase 'size' bytes from\n"
+           "    offset 'off' (entire device if not specified)\n"
+           "nand bad - show bad blocks\n"
+           "nand dump[.oob] off - dump page\n"
+           "nand scrub - really clean NAND erasing bad blocks (UNSAFE)\n"
+           "nand markbad off - mark bad block at offset (UNSAFE)\n"
+           "nand biterr off - make a bit error at offset (UNSAFE)\n"
+           "nand lock [tight] [status]\n"
+           "    bring nand to lock state or display locked pages\n"
+           "nand unlock [offset] [size] - unlock section\n");
 
 static int nand_load_image(cmd_tbl_t *cmdtp, nand_info_t *nand,
-			   ulong offset, ulong addr, char *cmd)
+                           ulong offset, ulong addr, char *cmd)
 {
 	int r;
 	char *ep, *s;
 	size_t cnt;
 	image_header_t *hdr;
-	int jffs2 = 0;
 #if defined(CONFIG_FIT)
 	const void *fit_hdr = NULL;
 #endif
 
 	s = strchr(cmd, '.');
 	if (s != NULL &&
-	    (!strcmp(s, ".jffs2") || !strcmp(s, ".e") || !strcmp(s, ".i")))
-		jffs2 = 1;
+	    (strcmp(s, ".jffs2") && !strcmp(s, ".e") && !strcmp(s, ".i"))) {
+		printf("Unknown nand load suffix '%s'\n", s);
+		show_boot_progress(-53);
+		return 1;
+	}
 
 	printf("\nLoading from %s, offset 0x%lx\n", nand->name, offset);
 
-	cnt = nand->oobblock;
-	if (jffs2) {
-		nand_read_options_t opts;
-		memset(&opts, 0, sizeof(opts));
-		opts.buffer	= (u_char*) addr;
-		opts.length	= cnt;
-		opts.offset	= offset;
-		opts.quiet      = 1;
-		r = nand_read_opts(nand, &opts);
-	} else {
-		r = nand_read(nand, offset, &cnt, (u_char *) addr);
-	}
-
+	cnt = nand->writesize;
+	r = nand_read(nand, offset, &cnt, (u_char *) addr);
 	if (r) {
 		puts("** Read error\n");
 		show_boot_progress (-56);
@@ -536,19 +539,10 @@ static int nand_load_image(cmd_tbl_t *cmdtp, nand_info_t *nand,
 		puts ("** Unknown image type\n");
 		return 1;
 	}
+	show_boot_progress (57);
 
-	if (jffs2) {
-		nand_read_options_t opts;
-		memset(&opts, 0, sizeof(opts));
-		opts.buffer	= (u_char*) addr;
-		opts.length	= cnt;
-		opts.offset	= offset;
-		opts.quiet      = 1;
-		r = nand_read_opts(nand, &opts);
-	} else {
-		r = nand_read(nand, offset, &cnt, (u_char *) addr);
-	}
-
+	/* FIXME: skip bad blocks */
+	r = nand_read(nand, offset, &cnt, (u_char *) addr);
 	if (r) {
 		puts("** Read error\n");
 		show_boot_progress (-58);
@@ -614,7 +608,7 @@ int do_nandboot(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 			else
 				addr = CFG_LOAD_ADDR;
 			return nand_load_image(cmdtp, &nand_info[dev->id->num],
-					       part->offset, addr, argv[0]);
+			                       part->offset, addr, argv[0]);
 		}
 	}
 #endif
@@ -669,7 +663,7 @@ usage:
 
 U_BOOT_CMD(nboot, 4, 1, do_nandboot,
 	"nboot   - boot from NAND device\n",
-	"[.jffs2] [partition] | [[[loadAddr] dev] offset]\n");
+	"[partition] | [[[loadAddr] dev] offset]\n");
 
 #endif
 
@@ -726,10 +720,10 @@ void archflashwp(void *archdata, int wp);
 #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
+#define NANDRW_READ         0x01
+#define NANDRW_WRITE        0x00
+#define NANDRW_JFFS2	    0x02
+#define NANDRW_JFFS2_SKIP   0x04
 
 /*
  * Imports from nand_legacy.c
@@ -839,11 +833,11 @@ int do_nand (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 
 		if (strncmp (argv[1], "read", 4) == 0 ||
 		    strncmp (argv[1], "write", 5) == 0) {
-			ulong	addr = simple_strtoul (argv[2], NULL, 16);
-			off_t	off  = simple_strtoul (argv[3], NULL, 16);
-			size_t	size = simple_strtoul (argv[4], NULL, 16);
-			int	cmd = (strncmp (argv[1], "read", 4) == 0) ?
-					NANDRW_READ : NANDRW_WRITE;
+			ulong addr = simple_strtoul (argv[2], NULL, 16);
+			off_t off = simple_strtoul (argv[3], NULL, 16);
+			size_t size = simple_strtoul (argv[4], NULL, 16);
+			int cmd = (strncmp (argv[1], "read", 4) == 0) ?
+			          NANDRW_READ : NANDRW_WRITE;
 			size_t total;
 			int ret;
 			char *cmdtail = strchr (argv[1], '.');
@@ -892,8 +886,7 @@ int do_nand (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 
 			ret = nand_legacy_rw (nand_dev_desc + curr_device,
 					      cmd, off, size,
-					      &total,
-					      (u_char *) addr);
+					      &total, (u_char *) addr);
 
 			printf (" %d bytes %s: %s\n", total,
 				(cmd & NANDRW_READ) ? "read" : "written",
@@ -1000,11 +993,11 @@ int do_nandboot (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 	show_boot_progress (55);
 
 	printf ("\nLoading from device %d: %s at 0x%lx (offset 0x%lx)\n",
-		dev, nand_dev_desc[dev].name, nand_dev_desc[dev].IO_ADDR,
-		offset);
+	    dev, nand_dev_desc[dev].name, nand_dev_desc[dev].IO_ADDR,
+	    offset);
 
 	if (nand_legacy_rw (nand_dev_desc + dev, NANDRW_READ, offset,
-			SECTORSIZE, NULL, (u_char *)addr)) {
+	                    SECTORSIZE, NULL, (u_char *)addr)) {
 		printf ("** Read error on %d\n", dev);
 		show_boot_progress (-56);
 		return 1;
@@ -1035,8 +1028,8 @@ int do_nandboot (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 	show_boot_progress (57);
 
 	if (nand_legacy_rw (nand_dev_desc + dev, NANDRW_READ,
-			offset + SECTORSIZE, cnt, NULL,
-			(u_char *)(addr+SECTORSIZE))) {
+	                    offset + SECTORSIZE, cnt, NULL,
+	                    (u_char *)(addr+SECTORSIZE))) {
 		printf ("** Read error on %d\n", dev);
 		show_boot_progress (-58);
 		return 1;
diff --git a/common/cmd_onenand.c b/common/cmd_onenand.c
index d6d3376..419bf70 100644
--- a/common/cmd_onenand.c
+++ b/common/cmd_onenand.c
@@ -38,7 +38,7 @@ int do_onenand(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 			onenand_init();
 			return 0;
 		}
-		onenand_print_device_info(onenand_chip.device_id, 1);
+		printf("%s\n", onenand_mtd.name);
 		return 0;
 
 	default:
diff --git a/common/cmd_yaffs2.c b/common/cmd_yaffs2.c
new file mode 100644
index 0000000..ac4a518
--- /dev/null
+++ b/common/cmd_yaffs2.c
@@ -0,0 +1,215 @@
+#include <common.h>
+
+#include <config.h>
+#include <command.h>
+
+#ifdef  YAFFS2_DEBUG
+#define PRINTF(fmt,args...) printf (fmt ,##args)
+#else
+#define PRINTF(fmt,args...)
+#endif
+
+extern void cmd_yaffs_mount(char *mp);
+extern void cmd_yaffs_umount(char *mp);
+extern void cmd_yaffs_read_file(char *fn);
+extern void cmd_yaffs_write_file(char *fn,char bval,int sizeOfFile);
+extern void cmd_yaffs_ls(const char *mountpt, int longlist);
+extern void cmd_yaffs_mwrite_file(char *fn, char *addr, int size);
+extern void cmd_yaffs_mread_file(char *fn, char *addr);
+extern void cmd_yaffs_mkdir(const char *dir);
+extern void cmd_yaffs_rmdir(const char *dir);
+extern void cmd_yaffs_rm(const char *path);
+extern void cmd_yaffs_mv(const char *oldPath, const char *newPath);
+
+extern int yaffs_DumpDevStruct(const char *path);
+
+
+int do_ymount (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+    char *mtpoint = argv[1];
+    cmd_yaffs_mount(mtpoint);
+    
+    return(0);
+}
+
+int do_yumount (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+    char *mtpoint = argv[1];
+    cmd_yaffs_umount(mtpoint);
+    
+    return(0);
+}
+
+int do_yls (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+    char *dirname = argv[argc-1];
+    
+    cmd_yaffs_ls(dirname, (argc>2)?1:0);
+
+    return(0);
+}
+
+int do_yrd (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+    char *filename = argv[1];
+    printf ("Reading file %s ", filename);
+
+    cmd_yaffs_read_file(filename);
+
+    printf ("done\n");
+    return(0);
+}
+
+int do_ywr (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+    char *filename = argv[1];
+    ulong value = simple_strtoul(argv[2], NULL, 16);
+    ulong numValues = simple_strtoul(argv[3], NULL, 16);
+
+    printf ("Writing value (%x) %x times to %s... ", value, numValues, filename);
+
+    cmd_yaffs_write_file(filename,value,numValues);
+
+    printf ("done\n");
+    return(0);
+}
+
+int do_yrdm (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+    char *filename = argv[1];
+    ulong addr = simple_strtoul(argv[2], NULL, 16);
+
+    cmd_yaffs_mread_file(filename, (char *)addr);
+
+    return(0);
+}
+
+int do_ywrm (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+    char *filename = argv[1];
+    ulong addr = simple_strtoul(argv[2], NULL, 16);
+    ulong size = simple_strtoul(argv[3], NULL, 16);
+
+    cmd_yaffs_mwrite_file(filename, (char *)addr, size);
+
+    return(0);
+}
+
+int do_ymkdir (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+    char *dirname = argv[1];
+
+    cmd_yaffs_mkdir(dirname);
+
+    return(0);
+}
+
+int do_yrmdir (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+    char *dirname = argv[1];
+
+    cmd_yaffs_rmdir(dirname);
+
+    return(0);
+}
+
+int do_yrm (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+    char *path = argv[1];
+
+    cmd_yaffs_rm(path);
+
+    return(0);
+}
+
+int do_ymv (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+    char *oldPath = argv[1];
+    char *newPath = argv[2];
+
+    cmd_yaffs_mv(newPath, oldPath);
+
+    return(0);
+}
+
+int do_ydump (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+    char *dirname = argv[1];
+    if (yaffs_DumpDevStruct(dirname) != 0)
+        printf("yaffs_DumpDevStruct returning error when dumping path: , %s\n", dirname);
+    return 0;
+}
+
+
+
+U_BOOT_CMD(
+    ymount, 3,  0,  do_ymount,
+    "ymount\t- mount yaffs\n",
+    "\n"
+);
+
+U_BOOT_CMD(
+    yumount, 3,  0,  do_yumount,
+    "yumount\t- unmount yaffs\n",
+    "\n"
+);
+
+U_BOOT_CMD(
+    yls,    4,  0,  do_yls,
+    "yls\t- yaffs ls\n",
+    "[-l] name\n"
+);
+
+U_BOOT_CMD(
+    yrd,    2,  0,  do_yrd,
+    "yrd\t- read file from yaffs\n",
+    "filename\n"
+);
+
+U_BOOT_CMD(
+    ywr,    4,  0,  do_ywr,
+    "ywr\t- write file to yaffs\n",
+    "filename value num_vlues\n"
+);
+
+U_BOOT_CMD(
+    yrdm,   3,  0,  do_yrdm,
+    "yrdm\t- read file to memory from yaffs\n",
+    "filename offset\n"
+);
+
+U_BOOT_CMD(
+    ywrm,   4,  0,  do_ywrm,
+    "ywrm\t- write file from memory to yaffs\n",
+    "filename offset size\n"
+);
+
+U_BOOT_CMD(
+    ymkdir, 2,  0,  do_ymkdir,
+    "ymkdir\t- YAFFS mkdir\n",
+    "dirname\n"
+);
+
+U_BOOT_CMD(
+    yrmdir, 2,  0,  do_yrmdir,
+    "yrmdir\t- YAFFS rmdir\n",
+    "dirname\n"
+);
+
+U_BOOT_CMD(
+    yrm,    2,  0,  do_yrm,
+    "yrm\t- YAFFS rm\n",
+    "path\n"
+);
+
+U_BOOT_CMD(
+    ymv,    4,  0,  do_ymv,
+    "ymv\t- YAFFS mv\n",
+    "oldPath newPath\n"
+);
+
+U_BOOT_CMD(
+    ydump,  2,  0,  do_ydump,
+    "ydump\t- YAFFS device struct\n",
+    "dirname\n"
+);
diff --git a/common/env_nand.c b/common/env_nand.c
index 104f085..a8f0de7 100644
--- a/common/env_nand.c
+++ b/common/env_nand.c
@@ -159,22 +159,23 @@ int writeenv(size_t offset, u_char *buf)
 {
 	size_t end = offset + CFG_ENV_RANGE;
 	size_t amount_saved = 0;
-	size_t blocksize;
+	size_t blocksize, len;
 
 	u_char *char_ptr;
 
 	blocksize = nand_info[0].erasesize;
+	len = min(blocksize, CFG_ENV_SIZE);
 
 	while (amount_saved < CFG_ENV_SIZE && offset < end) {
 		if (nand_block_isbad(&nand_info[0], offset)) {
 			offset += blocksize;
 		} else {
 			char_ptr = &buf[amount_saved];
-			if (nand_write(&nand_info[0], offset, &blocksize,
+			if (nand_write(&nand_info[0], offset, &len,
 					char_ptr))
 				return 1;
 			offset += blocksize;
-			amount_saved += blocksize;
+			amount_saved += len;
 		}
 	}
 	if (amount_saved != CFG_ENV_SIZE)
@@ -261,21 +262,22 @@ int readenv (size_t offset, u_char * buf)
 {
 	size_t end = offset + CFG_ENV_RANGE;
 	size_t amount_loaded = 0;
-	size_t blocksize;
+	size_t blocksize, len;
 
 	u_char *char_ptr;
 
 	blocksize = nand_info[0].erasesize;
+	len = min(blocksize, CFG_ENV_SIZE);
 
 	while (amount_loaded < CFG_ENV_SIZE && offset < end) {
 		if (nand_block_isbad(&nand_info[0], offset)) {
 			offset += blocksize;
 		} else {
 			char_ptr = &buf[amount_loaded];
-			if (nand_read(&nand_info[0], offset, &blocksize, char_ptr))
+			if (nand_read(&nand_info[0], offset, &len, char_ptr))
 				return 1;
 			offset += blocksize;
-			amount_loaded += blocksize;
+			amount_loaded += len;
 		}
 	}
 	if (amount_loaded != CFG_ENV_SIZE)
@@ -345,12 +347,10 @@ void env_relocate_spec (void)
 void env_relocate_spec (void)
 {
 #if !defined(ENV_IS_EMBEDDED)
-	size_t total;
 	int ret;
 
-	total = CFG_ENV_SIZE;
 	ret = readenv(CFG_ENV_OFFSET, (u_char *) env_ptr);
-	if (ret || total != CFG_ENV_SIZE)
+	if (ret)
 		return use_default();
 
 	if (crc32(0, env_ptr->data, ENV_SIZE) != env_ptr->crc)