cmd_mem.c

	/* We use the last specified parameters, unless new ones are
	 * entered.
	 */
	addr = mm_last_addr;
	size = mm_last_size;

	if ((flag & CMD_FLAG_REPEAT) == 0) {
		/* New command specified.  Check for a size specification.
		 * Defaults to long if no or incorrect specification.
		 */
		if ((size = cmd_get_data_size(argv[0], 4)) < 0)
			return 1;

		/* Address is specified since argc > 1
		*/
		addr = simple_strtoul(argv[1], NULL, 16);
		addr += base_address;
	}

#ifdef CONFIG_HAS_DATAFLASH
	if (addr_dataflash(addr)){
		puts ("Can't modify DataFlash in place. Use cp instead.\n\r");
		return 0;
	}
#endif

#ifdef CONFIG_BLACKFIN
	if (addr_bfin_on_chip_mem(addr)) {
		puts ("Can't modify L1 instruction in place. Use cp instead.\n\r");
		return 0;
	}
#endif

	/* Print the address, followed by value.  Then accept input for
	 * the next value.  A non-converted value exits.
	 */
	do {
		printf("%08lx:", addr);
		if (size == 4)
			printf(" %08x", *((uint   *)addr));
		else if (size == 2)
			printf(" %04x", *((ushort *)addr));
		else
			printf(" %02x", *((u_char *)addr));

		nbytes = readline (" ? ");
		if (nbytes == 0 || (nbytes == 1 && console_buffer[0] == '-')) {
			/* <CR> pressed as only input, don't modify current
			 * location and move to next. "-" pressed will go back.
			 */
			if (incrflag)
				addr += nbytes ? -size : size;
			nbytes = 1;
#ifdef CONFIG_BOOT_RETRY_TIME
			reset_cmd_timeout(); /* good enough to not time out */
#endif
		}
#ifdef CONFIG_BOOT_RETRY_TIME
		else if (nbytes == -2) {
			break;	/* timed out, exit the command	*/
		}
#endif
		else {
			char *endp;
			i = simple_strtoul(console_buffer, &endp, 16);
			nbytes = endp - console_buffer;
			if (nbytes) {
#ifdef CONFIG_BOOT_RETRY_TIME
				/* good enough to not time out
				 */
				reset_cmd_timeout();
#endif
				if (size == 4)
					*((uint   *)addr) = i;
				else if (size == 2)
					*((ushort *)addr) = i;
				else
					*((u_char *)addr) = i;
				if (incrflag)
					addr += size;
			}
		}
	} while (nbytes);

	mm_last_addr = addr;
	mm_last_size = size;
	return 0;
}

#ifndef CONFIG_CRC32_VERIFY

int do_mem_crc (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
	ulong addr, length;
	ulong crc;
	ulong *ptr;

	if (argc < 3) {
		cmd_usage(cmdtp);
		return 1;
	}

	addr = simple_strtoul (argv[1], NULL, 16);
	addr += base_address;

	length = simple_strtoul (argv[2], NULL, 16);

	crc = crc32 (0, (const uchar *) addr, length);

	printf ("CRC32 for %08lx ... %08lx ==> %08lx\n",
			addr, addr + length - 1, crc);

	if (argc > 3) {
		ptr = (ulong *) simple_strtoul (argv[3], NULL, 16);
		*ptr = crc;
	}

	return 0;
}

#else	/* CONFIG_CRC32_VERIFY */

int do_mem_crc (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
	ulong addr, length;
	ulong crc;
	ulong *ptr;
	ulong vcrc;
	int verify;
	int ac;
	char **av;

	if (argc < 3) {
  usage:
		cmd_usage(cmdtp);
		return 1;
	}

	av = argv + 1;
	ac = argc - 1;
	if (strcmp(*av, "-v") == 0) {
		verify = 1;
		av++;
		ac--;
		if (ac < 3)
			goto usage;
	} else
		verify = 0;

	addr = simple_strtoul(*av++, NULL, 16);
	addr += base_address;
	length = simple_strtoul(*av++, NULL, 16);

	crc = crc32(0, (const uchar *) addr, length);

	if (!verify) {
		printf ("CRC32 for %08lx ... %08lx ==> %08lx\n",
				addr, addr + length - 1, crc);
		if (ac > 2) {
			ptr = (ulong *) simple_strtoul (*av++, NULL, 16);
			*ptr = crc;
		}
	} else {
		vcrc = simple_strtoul(*av++, NULL, 16);
		if (vcrc != crc) {
			printf ("CRC32 for %08lx ... %08lx ==> %08lx != %08lx ** ERROR **\n",
					addr, addr + length - 1, crc, vcrc);
			return 1;
		}
	}

	return 0;

}
#endif	/* CONFIG_CRC32_VERIFY */

#ifdef CONFIG_CMD_MD5SUM
int do_md5sum(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
	unsigned long addr, len;
	unsigned int i;
	u8 output[16];

	if (argc < 3) {
		cmd_usage(cmdtp);
		return 1;
	}

	addr = simple_strtoul(argv[1], NULL, 16);
	len = simple_strtoul(argv[2], NULL, 16);

	md5((unsigned char *) addr, len, output);
	printf("md5 for %08lx ... %08lx ==> ", addr, addr + len - 1);
	for (i = 0; i < 16; i++)
		printf("%02x", output[i]);
	printf("\n");

	return 0;
}
#endif

#ifdef CONFIG_CMD_SHA1
int do_sha1sum(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
	unsigned long addr, len;
	unsigned int i;
	u8 output[20];

	if (argc < 3) {
		cmd_usage(cmdtp);
		return 1;
	}

	addr = simple_strtoul(argv[1], NULL, 16);
	len = simple_strtoul(argv[2], NULL, 16);

	sha1_csum((unsigned char *) addr, len, output);
	printf("SHA1 for %08lx ... %08lx ==> ", addr, addr + len - 1);
	for (i = 0; i < 20; i++)
		printf("%02x", output[i]);
	printf("\n");

	return 0;
}
#endif

#ifdef CONFIG_CMD_UNZIP
int do_unzip ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
	unsigned long src, dst;
	unsigned long src_len = ~0UL, dst_len = ~0UL;

	switch (argc) {
		case 4:
			dst_len = simple_strtoul(argv[3], NULL, 16);
			/* fall through */
		case 3:
			src = simple_strtoul(argv[1], NULL, 16);
			dst = simple_strtoul(argv[2], NULL, 16);
			break;
		default:
			cmd_usage(cmdtp);
			return 1;
	}

	return !!gunzip((void *) dst, dst_len, (void *) src, &src_len);
}
#endif /* CONFIG_CMD_UNZIP */


/**************************************************/
U_BOOT_CMD(
	md,	3,	1,	do_mem_md,
	"memory display",
	"[.b, .w, .l] address [# of objects]"
);


U_BOOT_CMD(
	mm,	2,	1,	do_mem_mm,
	"memory modify (auto-incrementing address)",
	"[.b, .w, .l] address"
);


U_BOOT_CMD(
	nm,	2,	1,	do_mem_nm,
	"memory modify (constant address)",
	"[.b, .w, .l] address"
);

U_BOOT_CMD(
	mw,	4,	1,	do_mem_mw,
	"memory write (fill)",
	"[.b, .w, .l] address value [count]"
);

U_BOOT_CMD(
	cp,	4,	1,	do_mem_cp,
	"memory copy",
	"[.b, .w, .l] source target count"
);

U_BOOT_CMD(
	cmp,	4,	1,	do_mem_cmp,
	"memory compare",
	"[.b, .w, .l] addr1 addr2 count"
);

#ifndef CONFIG_CRC32_VERIFY

U_BOOT_CMD(
	crc32,	4,	1,	do_mem_crc,
	"checksum calculation",
	"address count [addr]\n    - compute CRC32 checksum [save at addr]"
);

#else	/* CONFIG_CRC32_VERIFY */

U_BOOT_CMD(
	crc32,	5,	1,	do_mem_crc,
	"checksum calculation",
	"address count [addr]\n    - compute CRC32 checksum [save at addr]\n"
	"-v address count crc\n    - verify crc of memory area"
);

#endif	/* CONFIG_CRC32_VERIFY */

U_BOOT_CMD(
	base,	2,	1,	do_mem_base,
	"print or set address offset",
	"\n    - print address offset for memory commands\n"
	"base off\n    - set address offset for memory commands to 'off'"
);

U_BOOT_CMD(
	loop,	3,	1,	do_mem_loop,
	"infinite loop on address range",
	"[.b, .w, .l] address number_of_objects"
);

#ifdef CONFIG_LOOPW
U_BOOT_CMD(
	loopw,	4,	1,	do_mem_loopw,
	"infinite write loop on address range",
	"[.b, .w, .l] address number_of_objects data_to_write"
);
#endif /* CONFIG_LOOPW */

U_BOOT_CMD(
	mtest,	5,	1,	do_mem_mtest,
	"simple RAM read/write test",
	"[start [end [pattern [iterations]]]]"
);

#ifdef CONFIG_MX_CYCLIC
U_BOOT_CMD(
	mdc,	4,	1,	do_mem_mdc,
	"memory display cyclic",
	"[.b, .w, .l] address count delay(ms)"
);

U_BOOT_CMD(
	mwc,	4,	1,	do_mem_mwc,
	"memory write cyclic",
	"[.b, .w, .l] address value delay(ms)"
);
#endif /* CONFIG_MX_CYCLIC */

#ifdef CONFIG_CMD_MD5SUM
U_BOOT_CMD(
	md5sum,	3,	1,	do_md5sum,
	"compute MD5 message digest",
	"address count"
);
#endif

#ifdef CONFIG_CMD_SHA1SUM
U_BOOT_CMD(
	sha1sum,	3,	1,	do_sha1sum,
	"compute SHA1 message digest",
	"address count"
);
#endif /* CONFIG_CMD_SHA1 */

#ifdef CONFIG_CMD_UNZIP
U_BOOT_CMD(
	unzip,	4,	1,	do_unzip,
	"unzip a memory region",
	"srcaddr dstaddr [dstsize]"
);
#endif /* CONFIG_CMD_UNZIP */