1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) any later version. *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
19 ***************************************************************************/
27 #include "time_support.h"
35 #include <sys/types.h>
40 /* command handlers */
41 int handle_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
42 int handle_flash_banks_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
43 int handle_flash_info_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
44 int handle_flash_probe_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
45 int handle_flash_erase_check_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
46 int handle_flash_protect_check_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
47 int handle_flash_erase_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
48 int handle_flash_write_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
49 int handle_flash_write_binary_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
50 int handle_flash_write_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
51 int handle_flash_protect_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
52 int handle_flash_auto_erase_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
56 extern flash_driver_t lpc2000_flash;
57 extern flash_driver_t cfi_flash;
58 extern flash_driver_t at91sam7_flash;
59 extern flash_driver_t str7x_flash;
60 extern flash_driver_t str9x_flash;
61 extern flash_driver_t stellaris_flash;
62 extern flash_driver_t str9xpec_flash;
63 extern flash_driver_t stm32x_flash;
65 flash_driver_t *flash_drivers[] =
78 flash_bank_t *flash_banks;
79 static command_t *flash_cmd;
80 static int auto_erase = 0;
82 int flash_register_commands(struct command_context_s *cmd_ctx)
84 flash_cmd = register_command(cmd_ctx, NULL, "flash", NULL, COMMAND_ANY, NULL);
86 register_command(cmd_ctx, flash_cmd, "bank", handle_flash_bank_command, COMMAND_CONFIG, NULL);
91 int flash_init(struct command_context_s *cmd_ctx)
95 register_command(cmd_ctx, flash_cmd, "banks", handle_flash_banks_command, COMMAND_EXEC,
96 "list configured flash banks ");
97 register_command(cmd_ctx, flash_cmd, "info", handle_flash_info_command, COMMAND_EXEC,
98 "print info about flash bank <num>");
99 register_command(cmd_ctx, flash_cmd, "probe", handle_flash_probe_command, COMMAND_EXEC,
100 "identify flash bank <num>");
101 register_command(cmd_ctx, flash_cmd, "erase_check", handle_flash_erase_check_command, COMMAND_EXEC,
102 "check erase state of sectors in flash bank <num>");
103 register_command(cmd_ctx, flash_cmd, "protect_check", handle_flash_protect_check_command, COMMAND_EXEC,
104 "check protection state of sectors in flash bank <num>");
105 register_command(cmd_ctx, flash_cmd, "erase", handle_flash_erase_command, COMMAND_EXEC,
106 "erase sectors at <bank> <first> <last>");
107 register_command(cmd_ctx, flash_cmd, "write", handle_flash_write_binary_command, COMMAND_EXEC,
108 "DEPRECATED, use 'write_binary' or 'write_image' instead");
109 register_command(cmd_ctx, flash_cmd, "write_binary", handle_flash_write_binary_command, COMMAND_EXEC,
110 "write binary <bank> <file> <offset>");
111 register_command(cmd_ctx, flash_cmd, "write_image", handle_flash_write_image_command, COMMAND_EXEC,
112 "write image <file> [offset] [type]");
113 register_command(cmd_ctx, flash_cmd, "protect", handle_flash_protect_command, COMMAND_EXEC,
114 "set protection of sectors at <bank> <first> <last> <on|off>");
115 register_command(cmd_ctx, flash_cmd, "auto_erase", handle_flash_auto_erase_command, COMMAND_EXEC,
116 "auto erase flash sectors <on|off>");
122 flash_bank_t *get_flash_bank_by_num(int num)
127 for (p = flash_banks; p; p = p->next)
138 /* flash_bank <driver> <base> <size> <chip_width> <bus_width> <target> [driver_options ...]
140 int handle_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
148 WARNING("incomplete flash_bank configuration");
149 WARNING("flash_bank <driver> <base> <size> <chip_width> <bus_width> <target> [driver_options ...]");
153 if ((target = get_target_by_num(strtoul(args[5], NULL, 0))) == NULL)
155 ERROR("target %lu not defined", strtoul(args[5], NULL, 0));
159 for (i = 0; flash_drivers[i]; i++)
161 if (strcmp(args[0], flash_drivers[i]->name) == 0)
165 /* register flash specific commands */
166 if (flash_drivers[i]->register_commands(cmd_ctx) != ERROR_OK)
168 ERROR("couldn't register '%s' commands", args[0]);
172 c = malloc(sizeof(flash_bank_t));
174 c->driver = flash_drivers[i];
175 c->driver_priv = NULL;
176 c->base = strtoul(args[1], NULL, 0);
177 c->size = strtoul(args[2], NULL, 0);
178 c->chip_width = strtoul(args[3], NULL, 0);
179 c->bus_width = strtoul(args[4], NULL, 0);
182 if (flash_drivers[i]->flash_bank_command(cmd_ctx, cmd, args, argc, c) != ERROR_OK)
184 ERROR("'%s' driver rejected flash bank at 0x%8.8x", args[0], c->base);
189 /* put flash bank in linked list */
192 /* find last flash bank */
193 for (p = flash_banks; p && p->next; p = p->next);
206 /* no matching flash driver found */
209 ERROR("flash driver '%s' not found", args[0]);
216 int handle_flash_banks_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
223 command_print(cmd_ctx, "no flash banks configured");
227 for (p = flash_banks; p; p = p->next)
229 command_print(cmd_ctx, "#%i: %s at 0x%8.8x, size 0x%8.8x, buswidth %i, chipwidth %i",
230 i++, p->driver->name, p->base, p->size, p->bus_width, p->chip_width);
236 int handle_flash_info_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
244 command_print(cmd_ctx, "usage: flash info <num>");
248 for (p = flash_banks; p; p = p->next, i++)
250 if (i == strtoul(args[0], NULL, 0))
254 command_print(cmd_ctx, "#%i: %s at 0x%8.8x, size 0x%8.8x, buswidth %i, chipwidth %i",
255 i, p->driver->name, p->base, p->size, p->bus_width, p->chip_width);
256 for (j = 0; j < p->num_sectors; j++)
258 char *erase_state, *protect_state;
260 if (p->sectors[j].is_erased == 0)
261 erase_state = "not erased";
262 else if (p->sectors[j].is_erased == 1)
263 erase_state = "erased";
265 erase_state = "erase state unknown";
267 if (p->sectors[j].is_protected == 0)
268 protect_state = "not protected";
269 else if (p->sectors[j].is_protected == 1)
270 protect_state = "protected";
272 protect_state = "protection state unknown";
274 command_print(cmd_ctx, "\t#%i: 0x%8.8x (0x%x %ikB) %s, %s",
275 j, p->sectors[j].offset, p->sectors[j].size, p->sectors[j].size>>10,
276 erase_state, protect_state);
279 p->driver->info(p, buf, 1024);
280 command_print(cmd_ctx, "%s", buf);
287 int handle_flash_probe_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
294 command_print(cmd_ctx, "usage: flash probe <num>");
298 p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
301 if ((retval = p->driver->probe(p)) == ERROR_OK)
303 command_print(cmd_ctx, "flash '%s' found at 0x%8.8x", p->driver->name, p->base);
305 else if (retval == ERROR_FLASH_BANK_INVALID)
307 command_print(cmd_ctx, "probing failed for flash bank '#%s' at 0x%8.8x",
312 command_print(cmd_ctx, "unknown error when probing flash bank '#%s' at 0x%8.8x",
318 command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[0]);
324 int handle_flash_erase_check_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
331 command_print(cmd_ctx, "usage: flash erase_check <num>");
335 p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
338 if ((retval = p->driver->erase_check(p)) == ERROR_OK)
340 command_print(cmd_ctx, "successfully checked erase state", p->driver->name, p->base);
344 command_print(cmd_ctx, "unknown error when checking erase state of flash bank #%s at 0x%8.8x",
350 command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[0]);
356 int handle_flash_protect_check_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
363 command_print(cmd_ctx, "usage: flash protect_check <num>");
367 p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
370 if ((retval = p->driver->protect_check(p)) == ERROR_OK)
372 command_print(cmd_ctx, "successfully checked protect state");
374 else if (retval == ERROR_FLASH_OPERATION_FAILED)
376 command_print(cmd_ctx, "checking protection state failed (possibly unsupported) by flash #%s at 0x%8.8x", args[0], p->base);
380 command_print(cmd_ctx, "unknown error when checking protection state of flash bank '#%s' at 0x%8.8x", args[0], p->base);
385 command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[0]);
391 int handle_flash_erase_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
395 int first = strtoul(args[1], NULL, 0);
396 int last = strtoul(args[2], NULL, 0);
398 flash_bank_t *p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
402 duration_start_measure(&duration);
406 command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[0]);
410 if ((retval = p->driver->erase(p, first, last)) != ERROR_OK)
414 case ERROR_TARGET_NOT_HALTED:
415 command_print(cmd_ctx, "can't work with this flash while target is running");
417 case ERROR_INVALID_ARGUMENTS:
418 command_print(cmd_ctx, "usage: flash_erase <bank> <first> <last>");
420 case ERROR_FLASH_BANK_INVALID:
421 command_print(cmd_ctx, "no '%s' flash found at 0x%8.8x", p->driver->name, p->base);
423 case ERROR_FLASH_OPERATION_FAILED:
424 command_print(cmd_ctx, "flash erase error");
426 case ERROR_FLASH_SECTOR_INVALID:
427 command_print(cmd_ctx, "sector number(s) invalid");
430 command_print(cmd_ctx, "erased flash sectors %i to %i", first, last);
433 command_print(cmd_ctx, "unknown error");
438 duration_stop_measure(&duration, &duration_text);
440 command_print(cmd_ctx, "erased sectors %i through %i on flash bank %i in %s", first, last, strtoul(args[0], 0, 0), duration_text);
446 command_print(cmd_ctx, "usage: flash erase <bank> <first> <last>");
452 int handle_flash_protect_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
456 int first = strtoul(args[1], NULL, 0);
457 int last = strtoul(args[2], NULL, 0);
460 flash_bank_t *p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
463 command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[0]);
467 if (strcmp(args[3], "on") == 0)
469 else if (strcmp(args[3], "off") == 0)
473 command_print(cmd_ctx, "usage: flash protect <bank> <first> <last> <on|off>");
477 if ((retval = p->driver->protect(p, set, first, last)) != ERROR_OK)
481 case ERROR_TARGET_NOT_HALTED:
482 command_print(cmd_ctx, "can't work with this flash while target is running");
484 case ERROR_INVALID_ARGUMENTS:
485 command_print(cmd_ctx, "usage: flash protect <bank> <first> <last> <on|off>");
487 case ERROR_FLASH_BANK_INVALID:
488 command_print(cmd_ctx, "no '%s' flash found at 0x%8.8x", p->driver->name, p->base);
490 case ERROR_FLASH_OPERATION_FAILED:
491 command_print(cmd_ctx, "flash program error");
493 case ERROR_FLASH_SECTOR_INVALID:
494 command_print(cmd_ctx, "sector number(s) invalid");
497 command_print(cmd_ctx, "protection of flash sectors %i to %i turned %s", first, last, args[3]);
500 command_print(cmd_ctx, "unknown error");
505 command_print(cmd_ctx, "%s protection for sectors %i through %i on flash bank %i", (set) ? "set" : "cleared", first, last, strtoul(args[0], 0, 0));
510 command_print(cmd_ctx, "usage: flash protect <bank> <first> <last> <on|off>");
516 int handle_flash_write_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
518 target_t *target = get_current_target(cmd_ctx);
532 if (!strcmp(cmd, "write"))
534 command_print(cmd_ctx, "'flash write' has been deprecated in favor of 'flash write_binary' and 'flash write_image'");
535 DEBUG("'flash write' has been deprecated in favor of 'flash write_binary' and 'flash write_image'");
540 command_print(cmd_ctx, "usage: flash write <file> [offset] [type]");
546 ERROR("no target selected");
550 duration_start_measure(&duration);
554 image.base_address_set = 1;
555 image.base_address = strtoul(args[1], NULL, 0);
559 image.base_address_set = 0;
560 image.base_address = 0x0;
563 image.start_address_set = 0;
565 if (image_open(&image, args[0], (argc == 4) ? args[2] : NULL) != ERROR_OK)
567 command_print(cmd_ctx, "flash write error: %s", image.error_str);
571 failed = malloc(sizeof(int) * image.num_sections);
573 if ((retval = flash_write(target, &image, &written, &error_str, failed, auto_erase)) != ERROR_OK)
575 command_print(cmd_ctx, "failed writing image %s: %s", args[0], error_str);
580 for (i = 0; i < image.num_sections; i++)
584 command_print(cmd_ctx, "didn't write section at 0x%8.8x, size 0x%8.8x",
585 image.sections[i].base_address, image.sections[i].size);
589 duration_stop_measure(&duration, &duration_text);
590 command_print(cmd_ctx, "wrote %u byte from file %s in %s (%f kb/s)",
591 written, args[0], duration_text,
592 (float)written / 1024.0 / ((float)duration.duration.tv_sec + ((float)duration.duration.tv_usec / 1000000.0)));
602 int handle_flash_write_binary_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
618 command_print(cmd_ctx, "usage: flash write <bank> <file> <offset>");
622 duration_start_measure(&duration);
624 offset = strtoul(args[2], NULL, 0);
625 p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
628 command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[0]);
632 if (fileio_open(&fileio, args[1], FILEIO_READ, FILEIO_BINARY) != ERROR_OK)
634 command_print(cmd_ctx, "flash write error: %s", fileio.error_str);
638 buffer = malloc(fileio.size);
639 if (fileio_read(&fileio, fileio.size, buffer, &buf_cnt) != ERROR_OK)
641 command_print(cmd_ctx, "flash write error: %s", fileio.error_str);
645 if ((retval = p->driver->write(p, buffer, offset, buf_cnt)) != ERROR_OK)
647 command_print(cmd_ctx, "failed writing file %s to flash bank %i at offset 0x%8.8x",
648 args[1], strtoul(args[0], NULL, 0), strtoul(args[2], NULL, 0));
651 case ERROR_TARGET_NOT_HALTED:
652 command_print(cmd_ctx, "can't work with this flash while target is running");
654 case ERROR_INVALID_ARGUMENTS:
655 command_print(cmd_ctx, "usage: flash write <bank> <file> <offset>");
657 case ERROR_FLASH_BANK_INVALID:
658 command_print(cmd_ctx, "no '%s' flash found at 0x%8.8x", p->driver->name, p->base);
660 case ERROR_FLASH_OPERATION_FAILED:
661 command_print(cmd_ctx, "flash program error");
663 case ERROR_FLASH_DST_BREAKS_ALIGNMENT:
664 command_print(cmd_ctx, "offset breaks required alignment");
666 case ERROR_FLASH_DST_OUT_OF_BANK:
667 command_print(cmd_ctx, "destination is out of flash bank (offset and/or file too large)");
669 case ERROR_FLASH_SECTOR_NOT_ERASED:
670 command_print(cmd_ctx, "destination sector(s) not erased");
673 command_print(cmd_ctx, "unknown error");
679 duration_stop_measure(&duration, &duration_text);
680 command_print(cmd_ctx, "wrote %"PRIi64" byte from file %s to flash bank %i at offset 0x%8.8x in %s (%f kb/s)",
681 fileio.size, args[1], strtoul(args[0], NULL, 0), offset, duration_text,
682 (float)fileio.size / 1024.0 / ((float)duration.duration.tv_sec + ((float)duration.duration.tv_usec / 1000000.0)));
685 fileio_close(&fileio);
690 /* lookup flash bank by address */
691 flash_bank_t *get_flash_bank_by_addr(target_t *target, u32 addr)
695 /* cycle through bank list */
696 for (c = flash_banks; c; c = c->next)
698 /* check whether address belongs to this flash bank */
699 if ((addr >= c->base) && (addr < c->base + c->size) && target == c->target)
706 /* erase given flash region, selects proper bank according to target and address */
707 int flash_erase(target_t *target, u32 addr, u32 length)
714 if ((c = get_flash_bank_by_addr(target, addr)) == NULL)
715 return ERROR_FLASH_DST_OUT_OF_BANK; /* no corresponding bank found */
717 if (c->size == 0 || c->num_sectors == 0)
718 return ERROR_FLASH_BANK_INVALID;
722 /* special case, erase whole bank when length is zero */
724 return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
726 return c->driver->erase(c, 0, c->num_sectors - 1);
729 /* check whether it fits */
730 if (addr + length > c->base + c->size)
731 return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
735 for (i = 0; i < c->num_sectors; i++)
737 /* check whether sector overlaps with the given range and is not yet erased */
738 if (addr < c->sectors[i].offset + c->sectors[i].size && addr + length > c->sectors[i].offset && c->sectors[i].is_erased != 1) {
739 /* if first is not set yet then this is the first sector */
742 last = i; /* and it is the last one so far in any case */
746 if( first == -1 || last == -1 )
749 return c->driver->erase(c, first, last);
752 /* write an image to flash memory of the given target */
753 int flash_write(target_t *target, image_t *image, u32 *written, char **error_str, int *failed, int erase)
768 for (i = 0; i < image->num_sections; i++)
771 /* loop until we reach end of the image */
772 while (section < image->num_sections)
779 u32 run_address = image->sections[section].base_address+section_offset;
780 u32 run_size = image->sections[section].size-section_offset;
782 if (image->sections[section].size == 0)
784 WARNING("empty section %d", section);
790 /* find the corresponding flash bank */
791 if ((c = get_flash_bank_by_addr(target, run_address)) == NULL)
795 if (error_str == NULL)
796 return ERROR_FLASH_DST_OUT_OF_BANK; /* abort operation */
797 *error_str = malloc(FLASH_MAX_ERROR_STR);
798 snprintf(*error_str, FLASH_MAX_ERROR_STR, "no flash mapped at requested address");
799 return ERROR_FLASH_DST_OUT_OF_BANK; /* abort operation */
801 failed[section] = ERROR_FLASH_DST_OUT_OF_BANK; /* mark the section as failed */
802 section++; /* and skip it */
807 /* collect consecutive sections which fall into the same bank */
808 section_first = section;
809 section_last = section;
810 while ((run_address + run_size < c->base + c->size)
811 && (section_last + 1 < image->num_sections))
813 if (image->sections[section_last + 1].base_address < (run_address + run_size))
815 WARNING("section %d out of order", section_last + 1);
818 if (image->sections[section_last + 1].base_address != (run_address + run_size))
820 run_size += image->sections[++section_last].size;
823 /* fit the run into bank constraints */
824 if (run_address + run_size > c->base + c->size)
825 run_size = c->base + c->size - run_address;
827 /* allocate buffer */
828 buffer = malloc(run_size);
831 /* read sections to the buffer */
832 while (buffer_size < run_size)
836 if (buffer_size - run_size <= image->sections[section].size - section_offset)
837 size_read = buffer_size - run_size;
839 size_read = image->sections[section].size - section_offset;
841 if ((retval = image_read_section(image, section, section_offset,
842 size_read, buffer + buffer_size, &size_read)) != ERROR_OK || size_read == 0)
846 if (error_str == NULL)
847 return ERROR_IMAGE_TEMPORARILY_UNAVAILABLE;
849 *error_str = malloc(FLASH_MAX_ERROR_STR);
851 /* if image_read_section returned an error there's an error string we can pass on */
852 if (retval != ERROR_OK)
853 snprintf(*error_str, FLASH_MAX_ERROR_STR, "error reading from image: %s", image->error_str);
855 snprintf(*error_str, FLASH_MAX_ERROR_STR, "error reading from image");
857 return ERROR_IMAGE_TEMPORARILY_UNAVAILABLE;
860 buffer_size += size_read;
861 section_offset += size_read;
863 if (section_offset >= image->sections[section].size)
874 /* calculate and erase sectors */
875 retval = flash_erase( target, run_address, run_size );
878 if (retval == ERROR_OK)
880 /* write flash sectors */
881 retval = c->driver->write(c, buffer, run_address - c->base, run_size);
886 if (retval != ERROR_OK)
888 if (error_str == NULL)
889 return retval; /* abort operation */
891 *error_str = malloc(FLASH_MAX_ERROR_STR);
894 case ERROR_TARGET_NOT_HALTED:
895 snprintf(*error_str, FLASH_MAX_ERROR_STR, "can't flash image while target is running");
897 case ERROR_INVALID_ARGUMENTS:
898 snprintf(*error_str, FLASH_MAX_ERROR_STR, "flash driver can't fulfill request");
900 case ERROR_FLASH_OPERATION_FAILED:
901 snprintf(*error_str, FLASH_MAX_ERROR_STR, "flash program error");
903 case ERROR_FLASH_DST_BREAKS_ALIGNMENT:
904 snprintf(*error_str, FLASH_MAX_ERROR_STR, "offset breaks required alignment");
906 case ERROR_FLASH_DST_OUT_OF_BANK:
907 snprintf(*error_str, FLASH_MAX_ERROR_STR, "no flash mapped at requested address");
909 case ERROR_FLASH_SECTOR_NOT_ERASED:
910 snprintf(*error_str, FLASH_MAX_ERROR_STR, "destination sector(s) not erased");
913 snprintf(*error_str, FLASH_MAX_ERROR_STR, "unknown error: %i", retval);
916 return retval; /* abort operation */
920 *written += run_size; /* add run size to total written counter */
926 int handle_flash_auto_erase_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
930 command_print(cmd_ctx, "usage: flash auto_erase <on|off>");
934 if (strcmp(args[0], "on") == 0)
936 else if (strcmp(args[0], "off") == 0)