cmd_mem.c

{
	ulong start, end;
	vu_long *buf, *dummy;
	ulong iteration_limit = 0;
	int ret;
	ulong errs = 0;	/* number of errors, or -1 if interrupted */
	ulong pattern = 0;
	int iteration;
#if defined(CONFIG_SYS_ALT_MEMTEST)
	const int alt_test = 1;
#else
	const int alt_test = 0;
#endif

	start = CONFIG_SYS_MEMTEST_START;
	end = CONFIG_SYS_MEMTEST_END;

	if (argc > 1)
		if (strict_strtoul(argv[1], 16, &start) < 0)
			return CMD_RET_USAGE;

	if (argc > 2)
		if (strict_strtoul(argv[2], 16, &end) < 0)
			return CMD_RET_USAGE;

	if (argc > 3)
		if (strict_strtoul(argv[3], 16, &pattern) < 0)
			return CMD_RET_USAGE;

	if (argc > 4)
		if (strict_strtoul(argv[4], 16, &iteration_limit) < 0)
			return CMD_RET_USAGE;

	if (end < start) {
		printf("Refusing to do empty test\n");
		return -1;
	}

	printf("Testing %08x ... %08x:\n", (uint)start, (uint)end);
	debug("%s:%d: start %#08lx end %#08lx\n", __func__, __LINE__,
	      start, end);

	buf = map_sysmem(start, end - start);
	dummy = map_sysmem(CONFIG_SYS_MEMTEST_SCRATCH, sizeof(vu_long));
	for (iteration = 0;
			!iteration_limit || iteration < iteration_limit;
			iteration++) {
		if (ctrlc()) {
			errs = -1UL;
			break;
		}

		printf("Iteration: %6d\r", iteration + 1);
		debug("\n");
		if (alt_test) {
			errs = mem_test_alt(buf, start, end, dummy);
		} else {
			errs = mem_test_quick(buf, start, end, pattern,
					      iteration);
		}
		if (errs == -1UL)
			break;
	}

	/*
	 * Work-around for eldk-4.2 which gives this warning if we try to
	 * case in the unmap_sysmem() call:
	 * warning: initialization discards qualifiers from pointer target type
	 */
	{
		void *vbuf = (void *)buf;
		void *vdummy = (void *)dummy;

		unmap_sysmem(vbuf);
		unmap_sysmem(vdummy);
	}

	if (errs == -1UL) {
		/* Memory test was aborted - write a newline to finish off */
		putc('\n');
		ret = 1;
	} else {
		printf("Tested %d iteration(s) with %lu errors.\n",
			iteration, errs);
		ret = errs != 0;
	}

	return ret;
}
#endif	/* CONFIG_CMD_MEMTEST */

/* Modify memory.
 *
 * Syntax:
 *	mm{.b, .w, .l, .q} {addr}
 *	nm{.b, .w, .l, .q} {addr}
 */
static int
mod_mem(cmd_tbl_t *cmdtp, int incrflag, int flag, int argc, char * const argv[])
{
	ulong	addr;
#ifdef CONFIG_SYS_SUPPORT_64BIT_DATA
	u64 i;
#else
	ulong i;
#endif
	int	nbytes, size;
	void *ptr = NULL;

	if (argc != 2)
		return CMD_RET_USAGE;

	bootretry_reset_cmd_timeout();	/* got a good command to get here */
	/* 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 {
		ptr = map_sysmem(addr, size);
		printf("%08lx:", addr);
		if (size == 4)
			printf(" %08x", *((u32 *)ptr));
#ifdef CONFIG_SYS_SUPPORT_64BIT_DATA
		else if (size == 8)
			printf(" %016" PRIx64, *((u64 *)ptr));
#endif
		else if (size == 2)
			printf(" %04x", *((u16 *)ptr));
		else
			printf(" %02x", *((u8 *)ptr));

		nbytes = cli_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;
			/* good enough to not time out */
			bootretry_reset_cmd_timeout();
		}
#ifdef CONFIG_BOOT_RETRY_TIME
		else if (nbytes == -2) {
			break;	/* timed out, exit the command	*/
		}
#endif
		else {
			char *endp;
#ifdef CONFIG_SYS_SUPPORT_64BIT_DATA
			i = simple_strtoull(console_buffer, &endp, 16);
#else
			i = simple_strtoul(console_buffer, &endp, 16);
#endif
			nbytes = endp - console_buffer;
			if (nbytes) {
				/* good enough to not time out
				 */
				bootretry_reset_cmd_timeout();
				if (size == 4)
					*((u32 *)ptr) = i;
#ifdef CONFIG_SYS_SUPPORT_64BIT_DATA
				else if (size == 8)
					*((u64 *)ptr) = i;
#endif
				else if (size == 2)
					*((u16 *)ptr) = i;
				else
					*((u8 *)ptr) = i;
				if (incrflag)
					addr += size;
			}
		}
	} while (nbytes);
	if (ptr)
		unmap_sysmem(ptr);

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

#ifdef CONFIG_CMD_CRC32

static int do_mem_crc(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
	int flags = 0;
	int ac;
	char * const *av;

	if (argc < 3)
		return CMD_RET_USAGE;

	av = argv + 1;
	ac = argc - 1;
#ifdef CONFIG_HASH_VERIFY
	if (strcmp(*av, "-v") == 0) {
		flags |= HASH_FLAG_VERIFY;
		av++;
		ac--;
	}
#endif

	return hash_command("crc32", flags, cmdtp, flag, ac, av);
}

#endif

/**************************************************/
U_BOOT_CMD(
	md,	3,	1,	do_mem_md,
	"memory display",
#ifdef CONFIG_SYS_SUPPORT_64BIT_DATA
	"[.b, .w, .l, .q] address [# of objects]"
#else
	"[.b, .w, .l] address [# of objects]"
#endif
);


U_BOOT_CMD(
	mm,	2,	1,	do_mem_mm,
	"memory modify (auto-incrementing address)",
#ifdef CONFIG_SYS_SUPPORT_64BIT_DATA
	"[.b, .w, .l, .q] address"
#else
	"[.b, .w, .l] address"
#endif
);


U_BOOT_CMD(
	nm,	2,	1,	do_mem_nm,
	"memory modify (constant address)",
#ifdef CONFIG_SYS_SUPPORT_64BIT_DATA
	"[.b, .w, .l, .q] address"
#else
	"[.b, .w, .l] address"
#endif
);

U_BOOT_CMD(
	mw,	4,	1,	do_mem_mw,
	"memory write (fill)",
#ifdef CONFIG_SYS_SUPPORT_64BIT_DATA
	"[.b, .w, .l, .q] address value [count]"
#else
	"[.b, .w, .l] address value [count]"
#endif
);

U_BOOT_CMD(
	cp,	4,	1,	do_mem_cp,
	"memory copy",
#ifdef CONFIG_SYS_SUPPORT_64BIT_DATA
	"[.b, .w, .l, .q] source target count"
#else
	"[.b, .w, .l] source target count"
#endif
);

U_BOOT_CMD(
	cmp,	4,	1,	do_mem_cmp,
	"memory compare",
#ifdef CONFIG_SYS_SUPPORT_64BIT_DATA
	"[.b, .w, .l, .q] addr1 addr2 count"
#else
	"[.b, .w, .l] addr1 addr2 count"
#endif
);

#ifdef CONFIG_CMD_CRC32

#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 */

#endif

#ifdef CONFIG_CMD_MEMINFO
__weak void board_show_dram(ulong size)
{
	puts("DRAM:  ");
	print_size(size, "\n");
}

static int do_mem_info(cmd_tbl_t *cmdtp, int flag, int argc,
		       char * const argv[])
{
	board_show_dram(gd->ram_size);

	return 0;
}
#endif

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",
#ifdef CONFIG_SYS_SUPPORT_64BIT_DATA
	"[.b, .w, .l, .q] address number_of_objects"
#else
	"[.b, .w, .l] address number_of_objects"
#endif
);

#ifdef CONFIG_LOOPW
U_BOOT_CMD(
	loopw,	4,	1,	do_mem_loopw,
	"infinite write loop on address range",
#ifdef CONFIG_SYS_SUPPORT_64BIT_DATA
	"[.b, .w, .l, .q] address number_of_objects data_to_write"
#else
	"[.b, .w, .l] address number_of_objects data_to_write"
#endif
);
#endif /* CONFIG_LOOPW */

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

#ifdef CONFIG_MX_CYCLIC
U_BOOT_CMD(
	mdc,	4,	1,	do_mem_mdc,
	"memory display cyclic",
#ifdef CONFIG_SYS_SUPPORT_64BIT_DATA
	"[.b, .w, .l, .q] address count delay(ms)"
#else
	"[.b, .w, .l] address count delay(ms)"
#endif
);

U_BOOT_CMD(
	mwc,	4,	1,	do_mem_mwc,
	"memory write cyclic",
#ifdef CONFIG_SYS_SUPPORT_64BIT_DATA
	"[.b, .w, .l, .q] address value delay(ms)"
#else
	"[.b, .w, .l] address value delay(ms)"
#endif
);
#endif /* CONFIG_MX_CYCLIC */

#ifdef CONFIG_CMD_MEMINFO
U_BOOT_CMD(
	meminfo,	3,	1,	do_mem_info,
	"display memory information",
	""
);
#endif