cmd_mem.c

	ulong addr, length;
	ulong crc;
	ulong *ptr;
	ulong vcrc;
	int verify;
	int ac;
	char **av;

	if (argc < 3) {
  usage:
		printf ("Usage:\n%s\n", cmdtp->usage);
		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 */

/**************************************************/
#if (CONFIG_COMMANDS & CFG_CMD_MEMORY)
U_BOOT_CMD(
	md,     3,     1,      do_mem_md,
	"md      - memory display\n",
	"[.b, .w, .l] address [# of objects]\n    - memory display\n"
);


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


U_BOOT_CMD(
	nm,     2,	    1,     	do_mem_nm,
	"nm      - memory modify (constant address)\n",
	"[.b, .w, .l] address\n    - memory modify, read and keep address\n"
);

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

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

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

#ifndef CONFIG_CRC32_VERIFY

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

#else	/* CONFIG_CRC32_VERIFY */

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

#endif	/* CONFIG_CRC32_VERIFY */

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

U_BOOT_CMD(
	loop,    3,    1,    do_mem_loop,
	"loop    - infinite loop on address range\n",
	"[.b, .w, .l] address number_of_objects\n"
	"    - loop on a set of addresses\n"
);

U_BOOT_CMD(
	mtest,    4,    1,     do_mem_mtest,
	"mtest   - simple RAM test\n",
	"[start [end [pattern]]]\n"
	"    - simple RAM read/write test\n"
);

#endif
#endif	/* CFG_CMD_MEMORY */