1 files changed, 481 insertions, 0 deletions

diff --git a/u-boot/common/command.c b/u-boot/common/command.c
new file mode 100644
index 0000000..b3ec510
--- /dev/null
+++ b/u-boot/common/command.c
@@ -0,0 +1,481 @@
+/*
+ * (C) Copyright 2000-2009
+ * 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
+ */
+
+/*
+ *  Command Processor Table
+ */
+
+#include <common.h>
+#include <command.h>
+
+/*
+ * Use puts() instead of printf() to avoid printf buffer overflow
+ * for long help messages
+ */
+
+int _do_help (cmd_tbl_t *cmd_start, int cmd_items, cmd_tbl_t * cmdtp, int
+	      flag, int argc, char * const argv[])
+{
+	int i;
+	int rcode = 0;
+
+	if (argc == 1) {	/*show list of commands */
+		cmd_tbl_t *cmd_array[cmd_items];
+		int i, j, swaps;
+
+		/* Make array of commands from .uboot_cmd section */
+		cmdtp = cmd_start;
+		for (i = 0; i < cmd_items; i++) {
+			cmd_array[i] = cmdtp++;
+		}
+
+		/* Sort command list (trivial bubble sort) */
+		for (i = cmd_items - 1; i > 0; --i) {
+			swaps = 0;
+			for (j = 0; j < i; ++j) {
+				if (strcmp (cmd_array[j]->name,
+					    cmd_array[j + 1]->name) > 0) {
+					cmd_tbl_t *tmp;
+					tmp = cmd_array[j];
+					cmd_array[j] = cmd_array[j + 1];
+					cmd_array[j + 1] = tmp;
+					++swaps;
+				}
+			}
+			if (!swaps)
+				break;
+		}
+
+		/* print short help (usage) */
+		for (i = 0; i < cmd_items; i++) {
+			const char *usage = cmd_array[i]->usage;
+
+			/* allow user abort */
+			if (ctrlc ())
+				return 1;
+			if (usage == NULL)
+				continue;
+			printf("%-*s- %s\n", CONFIG_SYS_HELP_CMD_WIDTH,
+			       cmd_array[i]->name, usage);
+		}
+		return 0;
+	}
+	/*
+	 * command help (long version)
+	 */
+	for (i = 1; i < argc; ++i) {
+		if ((cmdtp = find_cmd_tbl (argv[i], cmd_start, cmd_items )) != NULL) {
+			rcode |= cmd_usage(cmdtp);
+		} else {
+			printf ("Unknown command '%s' - try 'help'"
+				" without arguments for list of all"
+				" known commands\n\n", argv[i]
+					);
+			rcode = 1;
+		}
+	}
+	return rcode;
+}
+
+/***************************************************************************
+ * find command table entry for a command
+ */
+cmd_tbl_t *find_cmd_tbl (const char *cmd, cmd_tbl_t *table, int table_len)
+{
+	cmd_tbl_t *cmdtp;
+	cmd_tbl_t *cmdtp_temp = table;	/*Init value */
+	const char *p;
+	int len;
+	int n_found = 0;
+
+	if (!cmd)
+		return NULL;
+	/*
+	 * Some commands allow length modifiers (like "cp.b");
+	 * compare command name only until first dot.
+	 */
+	len = ((p = strchr(cmd, '.')) == NULL) ? strlen (cmd) : (p - cmd);
+
+	for (cmdtp = table;
+	     cmdtp != table + table_len;
+	     cmdtp++) {
+		if (strncmp (cmd, cmdtp->name, len) == 0) {
+			if (len == strlen (cmdtp->name))
+				return cmdtp;	/* full match */
+
+			cmdtp_temp = cmdtp;	/* abbreviated command ? */
+			n_found++;
+		}
+	}
+	if (n_found == 1) {			/* exactly one match */
+		return cmdtp_temp;
+	}
+
+	return NULL;	/* not found or ambiguous command */
+}
+
+cmd_tbl_t *find_cmd (const char *cmd)
+{
+	int len = &__u_boot_cmd_end - &__u_boot_cmd_start;
+	return find_cmd_tbl(cmd, &__u_boot_cmd_start, len);
+}
+
+int cmd_usage(cmd_tbl_t *cmdtp)
+{
+	printf("%s - %s\n\n", cmdtp->name, cmdtp->usage);
+
+#ifdef	CONFIG_SYS_LONGHELP
+	printf("Usage:\n%s ", cmdtp->name);
+
+	if (!cmdtp->help) {
+		puts ("- No additional help available.\n");
+		return 1;
+	}
+
+	puts (cmdtp->help);
+	putc ('\n');
+#endif	/* CONFIG_SYS_LONGHELP */
+	return 1;
+}
+
+#ifdef CONFIG_AUTO_COMPLETE
+
+int var_complete(int argc, char * const 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 int complete_cmdv(int argc, char * const 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 * const 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 * const 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[CONFIG_SYS_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[CONFIG_SYS_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, CONFIG_SYS_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 >= CONFIG_SYS_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
+
+#ifdef CMD_DATA_SIZE
+int cmd_get_data_size(char* arg, int default_size)
+{
+	/* Check for a size specification .b, .w or .l.
+	 */
+	int len = strlen(arg);
+	if (len > 2 && arg[len-2] == '.') {
+		switch(arg[len-1]) {
+		case 'b':
+			return 1;
+		case 'w':
+			return 2;
+		case 'l':
+			return 4;
+		case 's':
+			return -2;
+		default:
+			return -1;
+		}
+	}
+	return default_size;
+}
+#endif
+
+#if defined(CONFIG_NEEDS_MANUAL_RELOC)
+DECLARE_GLOBAL_DATA_PTR;
+
+void fixup_cmdtable(cmd_tbl_t *cmdtp, int size)
+{
+	int	i;
+
+	if (gd->reloc_off == 0)
+		return;
+
+	for (i = 0; i < size; i++) {
+		ulong addr;
+
+		addr = (ulong) (cmdtp->cmd) + gd->reloc_off;
+#if DEBUG_COMMANDS
+		printf("Command \"%s\": 0x%08lx => 0x%08lx\n",
+		       cmdtp->name, (ulong) (cmdtp->cmd), addr);
+#endif
+		cmdtp->cmd =
+			(int (*)(struct cmd_tbl_s *, int, int, char * const []))addr;
+		addr = (ulong)(cmdtp->name) + gd->reloc_off;
+		cmdtp->name = (char *)addr;
+		if (cmdtp->usage) {
+			addr = (ulong)(cmdtp->usage) + gd->reloc_off;
+			cmdtp->usage = (char *)addr;
+		}
+#ifdef	CONFIG_SYS_LONGHELP
+		if (cmdtp->help) {
+			addr = (ulong)(cmdtp->help) + gd->reloc_off;
+			cmdtp->help = (char *)addr;
+		}
+#endif
+		cmdtp++;
+	}
+}
+#endif