1/*
2 * cmd_strings.c - just like `strings` command
3 *
4 * Copyright (c) 2008 Analog Devices Inc.
5 *
6 * Licensed under the GPL-2 or later.
7 */
8
9#include <config.h>
10#include <common.h>
11#include <command.h>
12
13static char *start_addr, *last_addr;
14
15int do_strings(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
16{
17	if (argc == 1)
18		return CMD_RET_USAGE;
19
20	if ((flag & CMD_FLAG_REPEAT) == 0) {
21		start_addr = (char *)hextoul(argv[1], NULL);
22		if (argc > 2)
23			last_addr = (char *)hextoul(argv[2], NULL);
24		else
25			last_addr = (char *)-1;
26	}
27
28	char *addr = start_addr;
29	do {
30		puts(addr);
31		puts("\n");
32		addr += strlen(addr) + 1;
33	} while (addr[0] && addr < last_addr);
34
35	last_addr = addr + (last_addr - start_addr);
36	start_addr = addr;
37
38	return 0;
39}
40
41U_BOOT_CMD(
42	strings, 3, 1, do_strings,
43	"display strings",
44	"<addr> [byte count]\n"
45	"    - display strings at <addr> for at least [byte count] or first double NUL"
46);
47