diff -ruNb u-boot-original/README u-boot-autocomplete/README
--- u-boot-original/README	2004-03-30 14:37:28.395972064 +0300
+++ u-boot-autocomplete/README	2004-03-30 15:54:54.321684000 +0300
@@ -1231,6 +1231,10 @@
 		default value of 5 is used.
 
 - Command Interpreter:
+		CFG_AUTO_COMPLETE
+
+		Enable auto completion of commands using TAB.
+
 		CFG_HUSH_PARSER
 
 		Define this variable to enable the "hush" shell (from
diff -ruNb u-boot-original/common/command.c u-boot-autocomplete/common/command.c
--- u-boot-original/common/command.c	2004-03-30 14:37:28.665931024 +0300
+++ u-boot-autocomplete/common/command.c	2004-03-30 15:42:19.877376968 +0300
@@ -217,3 +217,284 @@
 
 	return NULL;	/* not found or ambiguous command */
 }
+
+#ifdef CONFIG_AUTO_COMPLETE
+
+int var_complete(int argc, char *argv[], char last_char, int maxv, char *cmdv[])
+{
+	static char tmp_buf[512];
+	int space;
+
+	space = last_char == '\0' || last_char == ' ' || last_char == '\t';
+
+	if (space && argc == 1)
+		return env_complete("", maxv, cmdv, sizeof(tmp_buf), tmp_buf);
+
+	if (!space && argc == 2)
+		return env_complete(argv[1], maxv, cmdv, sizeof(tmp_buf), tmp_buf);
+
+	return 0;
+}
+
+static void install_auto_complete_handler(const char *cmd,
+		int (*complete)(int argc, char *argv[], char last_char, int maxv, char *cmdv[]))
+{
+	cmd_tbl_t *cmdtp;
+
+	cmdtp = find_cmd(cmd);
+	if (cmdtp == NULL)
+		return;
+
+	cmdtp->complete = complete;
+}
+
+void install_auto_complete(void)
+{
+	install_auto_complete_handler("printenv", var_complete);
+	install_auto_complete_handler("setenv", var_complete);
+#if (CONFIG_COMMANDS & CFG_CMD_RUN)
+	install_auto_complete_handler("run", var_complete);
+#endif
+}
+
+/*************************************************************************************/
+
+static int complete_cmdv(int argc, char *argv[], char last_char, int maxv, char *cmdv[])
+{
+	cmd_tbl_t *cmdtp;
+	const char *p;
+	int len, clen;
+	int n_found = 0;
+	const char *cmd;
+
+	/* sanity? */
+	if (maxv < 2)
+		return -2;
+
+	cmdv[0] = NULL;
+
+	if (argc == 0) {
+		/* output full list of commands */
+		for (cmdtp = &__u_boot_cmd_start; cmdtp != &__u_boot_cmd_end; cmdtp++) {
+			if (n_found >= maxv - 2) {
+				cmdv[n_found++] = "...";
+				break;
+			}
+			cmdv[n_found++] = cmdtp->name;
+		}
+		cmdv[n_found] = NULL;
+		return n_found;
+	}
+
+	/* more than one arg or one but the start of the next */
+	if (argc > 1 || (last_char == '\0' || last_char == ' ' || last_char == '\t')) {
+		cmdtp = find_cmd(argv[0]);
+		if (cmdtp == NULL || cmdtp->complete == NULL) {
+			cmdv[0] = NULL;
+			return 0;
+		}
+		return (*cmdtp->complete)(argc, argv, last_char, maxv, cmdv);
+	}
+
+	cmd = argv[0];
+	/*
+	 * Some commands allow length modifiers (like "cp.b");
+	 * compare command name only until first dot.
+	 */
+	p = strchr(cmd, '.');
+	if (p == NULL)
+		len = strlen(cmd);
+	else
+		len = p - cmd;
+
+	/* return the partial matches */
+	for (cmdtp = &__u_boot_cmd_start; cmdtp != &__u_boot_cmd_end; cmdtp++) {
+
+		clen = strlen(cmdtp->name);
+		if (clen < len)
+			continue;
+
+		if (memcmp(cmd, cmdtp->name, len) != 0)
+			continue;
+
+		/* too many! */
+		if (n_found >= maxv - 2) {
+			cmdv[n_found++] = "...";
+			break;
+		}
+
+		cmdv[n_found++] = cmdtp->name;
+	}
+
+	cmdv[n_found] = NULL;
+	return n_found;
+}
+
+static int make_argv(char *s, int argvsz, char *argv[])
+{
+	int argc = 0;
+
+	/* split into argv */
+	while (argc < argvsz - 1) {
+
+		/* skip any white space */
+		while ((*s == ' ') || (*s == '\t'))
+			++s;
+
+		if (*s == '\0') 	/* end of s, no more args	*/
+			break;
+
+		argv[argc++] = s;	/* begin of argument string	*/
+
+		/* find end of string */
+		while (*s && (*s != ' ') && (*s != '\t'))
+			++s;
+
+		if (*s == '\0')		/* end of s, no more args	*/
+			break;
+
+		*s++ = '\0';		/* terminate current arg	 */
+	}
+	argv[argc] = NULL;
+
+	return argc;
+}
+
+static void print_argv(const char *banner, const char *leader, const char *sep, int linemax, char *argv[])
+{
+	int ll = leader != NULL ? strlen(leader) : 0;
+	int sl = sep != NULL ? strlen(sep) : 0;
+	int len, i;
+
+	if (banner) {
+		puts("\n");
+		puts(banner);
+	}
+
+	i = linemax;	/* force leader and newline */
+	while (*argv != NULL) {
+		len = strlen(*argv) + sl;
+		if (i + len >= linemax) {
+			puts("\n");
+			if (leader)
+				puts(leader);
+			i = ll - sl;
+		} else if (sep)
+			puts(sep);
+		puts(*argv++);
+		i += len;
+	}
+	printf("\n");
+}
+
+static int find_common_prefix(char *argv[])
+{
+	int i, len;
+	char *anchor, *s, *t;
+
+	if (*argv == NULL)
+		return 0;
+
+	/* begin with max */
+	anchor = *argv++;
+	len = strlen(anchor);
+	while ((t = *argv++) != NULL) {
+		s = anchor;
+		for (i = 0; i < len; i++, t++, s++)
+			if (*t != *s) 
+				break;
+		len = s - anchor;
+	}
+	return len;
+}
+
+static char tmp_buf[CFG_CBSIZE];	/* copy of console I/O buffer	*/
+
+int cmd_auto_complete(const char *const prompt, char *buf, int *np, int *colp)
+{
+	int n = *np, col = *colp;
+	char *argv[CFG_MAXARGS + 1];		/* NULL terminated	*/
+	char *cmdv[20];
+	char *s, *t;
+	const char *sep;
+	int i, j, k, len, seplen, argc;
+	int cnt;
+	char last_char;
+
+	if (strcmp(prompt, CFG_PROMPT) != 0)
+		return 0;	/* not in normal console */
+
+	cnt = strlen(buf);
+	if (cnt >= 1)
+		last_char = buf[cnt - 1];
+	else
+		last_char = '\0';
+
+	/* copy to secondary buffer which will be affected */
+	strcpy(tmp_buf, buf);
+
+	/* separate into argv */
+	argc = make_argv(tmp_buf, sizeof(argv)/sizeof(argv[0]), argv);
+
+	/* do the completion and return the possible completions */
+	i = complete_cmdv(argc, argv, last_char, sizeof(cmdv)/sizeof(cmdv[0]), cmdv);
+
+	/* no match; bell and out */
+	if (i == 0) {
+		if (argc > 1)	/* allow tab for non command */
+			return 0;
+		putc('\a');
+		return 1;
+	}
+
+	s = NULL;
+	len = 0;
+	sep = NULL;
+	seplen = 0;
+	if (i == 1) { /* one match; perfect */
+		k = strlen(argv[argc - 1]);
+		s = cmdv[0] + k;
+		len = strlen(s);
+		sep = " ";
+		seplen = 1;
+	} else if (i > 1 && (j = find_common_prefix(cmdv)) != 0) {	/* more */
+		k = strlen(argv[argc - 1]);
+		j -= k;
+		if (j > 0) {
+			s = cmdv[0] + k;
+			len = j;
+		}
+	}
+
+	if (s != NULL) {
+		k = len + seplen;
+		/* make sure it fits */
+		if (n + k >= CFG_CBSIZE - 2) {
+			putc('\a');
+			return 1;
+		}
+
+		t = buf + cnt;
+		for (i = 0; i < len; i++)
+			*t++ = *s++;
+		if (sep != NULL)
+			for (i = 0; i < seplen; i++)
+				*t++ = sep[i];
+		*t = '\0';
+		n += k;
+		col += k;
+		puts(t - k);
+		if (sep == NULL)
+			putc('\a');
+		*np = n;
+		*colp = col;
+	} else {
+		print_argv(NULL, "  ", " ", 78, cmdv);
+
+		puts(prompt);
+		puts(buf);
+	}
+	return 1;
+}
+
+#endif
diff -ruNb u-boot-original/common/env_common.c u-boot-autocomplete/common/env_common.c
--- u-boot-original/common/env_common.c	2004-03-30 14:37:28.668930568 +0300
+++ u-boot-autocomplete/common/env_common.c	2004-03-30 15:42:19.878376816 +0300
@@ -260,3 +260,44 @@
 	disable_nvram();
 #endif
 }
+
+#ifdef CONFIG_AUTO_COMPLETE
+int env_complete(char *var, int maxv, char *cmdv[], int bufsz, char *buf)
+{
+	int i, nxt, len, vallen, found;
+	const char *lval, *rval;
+
+	found = 0;
+	cmdv[0] = NULL;
+
+	len = strlen(var);
+	/* now iterate over the variables and select those that match */
+	for (i=0; env_get_char(i) != '\0'; i=nxt+1) {
+
+		for (nxt=i; env_get_char(nxt) != '\0'; ++nxt)
+			;
+
+		lval = env_get_addr(i);
+		rval = strchr(lval, '=');
+		if (rval != NULL) {
+			vallen = rval - lval;
+			rval++;
+		} else
+			vallen = strlen(lval);
+
+		if (len > 0 && (vallen < len || memcmp(lval, var, len) != 0))
+			continue;
+
+		if (found >= maxv - 2 || bufsz < vallen + 1) {
+			cmdv[found++] = "...";
+			break;
+		}
+		cmdv[found++] = buf;
+		memcpy(buf, lval, vallen); buf += vallen; bufsz -= vallen;
+		*buf++ = '\0'; bufsz--;
+	}
+
+	cmdv[found] = NULL;
+	return found;
+}
+#endif
diff -ruNb u-boot-original/common/main.c u-boot-autocomplete/common/main.c
--- u-boot-original/common/main.c	2004-03-30 14:37:28.670930264 +0300
+++ u-boot-autocomplete/common/main.c	2004-03-30 15:42:19.879376664 +0300
@@ -365,6 +365,10 @@
 	u_boot_hush_start ();
 #endif
 
+#ifdef CONFIG_AUTO_COMPLETE
+	install_auto_complete();
+#endif
+
 #ifdef CONFIG_PREBOOT
 	if ((p = getenv ("preboot")) != NULL) {
 # ifdef CONFIG_AUTOBOOT_KEYED
@@ -608,6 +612,14 @@
 			 */
 			if (n < CFG_CBSIZE-2) {
 				if (c == '\t') {	/* expand TABs		*/
+#ifdef CONFIG_AUTO_COMPLETE
+					/* if auto completion triggered just continue */
+					*p = '\0';
+					if (cmd_auto_complete(prompt, console_buffer, &n, &col)) {
+						p = console_buffer + n;	/* reset */
+						continue;
+					}
+#endif
 					puts (tab_seq+(col&07));
 					col += 8 - (col&07);
 				} else {
diff -ruNb u-boot-original/include/command.h u-boot-autocomplete/include/command.h
--- u-boot-original/include/command.h	2004-03-30 14:37:28.749918256 +0300
+++ u-boot-autocomplete/include/command.h	2004-03-30 15:42:19.880376512 +0300
@@ -46,6 +46,10 @@
 #ifdef	CFG_LONGHELP
 	char		*help;		/* Help  message	(long)	*/
 #endif
+#ifdef CONFIG_AUTO_COMPLETE
+	/* do auto completion on the arguments */
+	int		(*complete)(int argc, char *argv[], char last_char, int maxv, char *cmdv[]);
+#endif
 };
 
 typedef struct cmd_tbl_s	cmd_tbl_t;
@@ -57,6 +61,11 @@
 /* common/command.c */
 cmd_tbl_t *find_cmd(const char *cmd);
 
+#ifdef CONFIG_AUTO_COMPLETE
+extern void install_auto_complete(void);
+extern int cmd_auto_complete(const char *const prompt, char *buf, int *np, int *colp);
+#endif
+
 /*
  * Monitor Command
  *
diff -ruNb u-boot-original/include/common.h u-boot-autocomplete/include/common.h
--- u-boot-original/include/common.h	2004-03-30 14:37:28.750918104 +0300
+++ u-boot-autocomplete/include/common.h	2004-03-30 15:42:19.880376512 +0300
@@ -196,6 +196,10 @@
 # include <asm/u-boot-i386.h>
 #endif /* CONFIG_I386 */
 
+#ifdef CONFIG_AUTO_COMPLETE
+int env_complete(char *var, int maxv, char *cmdv[], int maxsz, char *buf);
+#endif
+
 void	pci_init      (void);
 void	pci_init_board(void);
 void	pciinfo	      (int, int);