]>
git.ipfire.org Git - people/ms/u-boot.git/blob - common/cmd_load.c
2 * (C) Copyright 2000-2004
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
25 * Serial up- and download support
34 DECLARE_GLOBAL_DATA_PTR
;
36 #if defined(CONFIG_CMD_LOADB)
37 static ulong
load_serial_ymodem (ulong offset
);
40 #if defined(CONFIG_CMD_LOADS)
41 static ulong
load_serial (long offset
);
42 static int read_record (char *buf
, ulong len
);
43 # if defined(CONFIG_CMD_SAVES)
44 static int save_serial (ulong offset
, ulong size
);
45 static int write_record (char *buf
);
48 static int do_echo
= 1;
51 /* -------------------------------------------------------------------- */
53 #if defined(CONFIG_CMD_LOADS)
54 int do_load_serial (cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *argv
[])
61 #ifdef CONFIG_SYS_LOADS_BAUD_CHANGE
62 int load_baudrate
, current_baudrate
;
64 load_baudrate
= current_baudrate
= gd
->baudrate
;
67 if (((env_echo
= getenv("loads_echo")) != NULL
) && (*env_echo
== '1')) {
73 #ifdef CONFIG_SYS_LOADS_BAUD_CHANGE
75 offset
= simple_strtol(argv
[1], NULL
, 16);
78 load_baudrate
= (int)simple_strtoul(argv
[2], NULL
, 10);
80 /* default to current baudrate */
81 if (load_baudrate
== 0)
82 load_baudrate
= current_baudrate
;
84 if (load_baudrate
!= current_baudrate
) {
85 printf ("## Switch baudrate to %d bps and press ENTER ...\n",
88 gd
->baudrate
= load_baudrate
;
96 #else /* ! CONFIG_SYS_LOADS_BAUD_CHANGE */
98 offset
= simple_strtol(argv
[1], NULL
, 16);
100 #endif /* CONFIG_SYS_LOADS_BAUD_CHANGE */
102 printf ("## Ready for S-Record download ...\n");
104 addr
= load_serial (offset
);
107 * Gather any trailing characters (for instance, the ^D which
108 * is sent by 'cu' after sending a file), and give the
109 * box some time (100 * 1 ms)
111 for (i
=0; i
<100; ++i
) {
119 printf ("## S-Record download aborted\n");
122 printf ("## Start Addr = 0x%08lX\n", addr
);
126 #ifdef CONFIG_SYS_LOADS_BAUD_CHANGE
127 if (load_baudrate
!= current_baudrate
) {
128 printf ("## Switch baudrate to %d bps and press ESC ...\n",
131 gd
->baudrate
= current_baudrate
;
135 if (getc() == 0x1B) /* ESC */
144 load_serial (long offset
)
146 char record
[SREC_MAXRECLEN
+ 1]; /* buffer for one S-Record */
147 char binbuf
[SREC_MAXBINLEN
]; /* buffer for binary data */
148 int binlen
; /* no. of data bytes in S-Rec. */
149 int type
; /* return code for record type */
150 ulong addr
; /* load address from S-Record */
151 ulong size
; /* number of bytes transferred */
154 ulong start_addr
= ~0;
158 while (read_record(record
, SREC_MAXRECLEN
+ 1) >= 0) {
159 type
= srec_decode (record
, &binlen
, &addr
, binbuf
);
162 return (~0); /* Invalid S-Record */
169 store_addr
= addr
+ offset
;
170 #ifndef CONFIG_SYS_NO_FLASH
171 if (addr2info(store_addr
)) {
174 rc
= flash_write((char *)binbuf
,store_addr
,binlen
);
182 memcpy ((char *)(store_addr
), binbuf
, binlen
);
184 if ((store_addr
) < start_addr
)
185 start_addr
= store_addr
;
186 if ((store_addr
+ binlen
- 1) > end_addr
)
187 end_addr
= store_addr
+ binlen
- 1;
193 size
= end_addr
- start_addr
+ 1;
195 "## First Load Addr = 0x%08lX\n"
196 "## Last Load Addr = 0x%08lX\n"
197 "## Total Size = 0x%08lX = %ld Bytes\n",
198 start_addr
, end_addr
, size
, size
200 flush_cache (start_addr
, size
);
201 sprintf(buf
, "%lX", size
);
202 setenv("filesize", buf
);
209 if (!do_echo
) { /* print a '.' every 100 lines */
210 if ((++line_count
% 100) == 0)
215 return (~0); /* Download aborted */
219 read_record (char *buf
, ulong len
)
224 --len
; /* always leave room for terminating '\0' byte */
226 for (p
=buf
; p
< buf
+len
; ++p
) {
227 c
= getc(); /* read character */
229 putc (c
); /* ... and echo it */
237 case 0x03: /* ^C - Control C */
243 /* Check for the console hangup (if any different from serial) */
244 if (gd
->jt
[XF_getc
] != getc
) {
251 /* line too long - truncate */
256 #if defined(CONFIG_CMD_SAVES)
258 int do_save_serial (cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *argv
[])
262 #ifdef CONFIG_SYS_LOADS_BAUD_CHANGE
263 int save_baudrate
, current_baudrate
;
265 save_baudrate
= current_baudrate
= gd
->baudrate
;
269 offset
= simple_strtoul(argv
[1], NULL
, 16);
271 #ifdef CONFIG_SYS_LOADS_BAUD_CHANGE
273 size
= simple_strtoul(argv
[2], NULL
, 16);
276 save_baudrate
= (int)simple_strtoul(argv
[3], NULL
, 10);
278 /* default to current baudrate */
279 if (save_baudrate
== 0)
280 save_baudrate
= current_baudrate
;
282 if (save_baudrate
!= current_baudrate
) {
283 printf ("## Switch baudrate to %d bps and press ENTER ...\n",
286 gd
->baudrate
= save_baudrate
;
294 #else /* ! CONFIG_SYS_LOADS_BAUD_CHANGE */
296 size
= simple_strtoul(argv
[2], NULL
, 16);
298 #endif /* CONFIG_SYS_LOADS_BAUD_CHANGE */
300 printf ("## Ready for S-Record upload, press ENTER to proceed ...\n");
305 if(save_serial (offset
, size
)) {
306 printf ("## S-Record upload aborted\n");
308 printf ("## S-Record upload complete\n");
310 #ifdef CONFIG_SYS_LOADS_BAUD_CHANGE
311 if (save_baudrate
!= current_baudrate
) {
312 printf ("## Switch baudrate to %d bps and press ESC ...\n",
313 (int)current_baudrate
);
315 gd
->baudrate
= current_baudrate
;
319 if (getc() == 0x1B) /* ESC */
327 #define SREC3_START "S0030000FC\n"
328 #define SREC3_FORMAT "S3%02X%08lX%s%02X\n"
329 #define SREC3_END "S70500000000FA\n"
330 #define SREC_BYTES_PER_RECORD 16
332 static int save_serial (ulong address
, ulong count
)
334 int i
, c
, reclen
, checksum
, length
;
335 char *hex
= "0123456789ABCDEF";
336 char record
[2*SREC_BYTES_PER_RECORD
+16]; /* buffer for one S-Record */
337 char data
[2*SREC_BYTES_PER_RECORD
+1]; /* buffer for hex data */
342 if(write_record(SREC3_START
)) /* write the header */
345 if(count
) { /* collect hex data in the buffer */
346 c
= *(volatile uchar
*)(address
+ reclen
); /* get one byte */
347 checksum
+= c
; /* accumulate checksum */
348 data
[2*reclen
] = hex
[(c
>>4)&0x0f];
349 data
[2*reclen
+1] = hex
[c
& 0x0f];
350 data
[2*reclen
+2] = '\0';
354 if(reclen
== SREC_BYTES_PER_RECORD
|| count
== 0) {
355 /* enough data collected for one record: dump it */
356 if(reclen
) { /* build & write a data record: */
357 /* address + data + checksum */
358 length
= 4 + reclen
+ 1;
360 /* accumulate length bytes into checksum */
361 for(i
= 0; i
< 2; i
++)
362 checksum
+= (length
>> (8*i
)) & 0xff;
364 /* accumulate address bytes into checksum: */
365 for(i
= 0; i
< 4; i
++)
366 checksum
+= (address
>> (8*i
)) & 0xff;
368 /* make proper checksum byte: */
369 checksum
= ~checksum
& 0xff;
371 /* output one record: */
372 sprintf(record
, SREC3_FORMAT
, length
, address
, data
, checksum
);
373 if(write_record(record
))
376 address
+= reclen
; /* increment address */
382 if(write_record(SREC3_END
)) /* write the final record */
388 write_record (char *buf
)
395 /* Check for the console hangup (if any different from serial) */
407 #if defined(CONFIG_CMD_LOADB)
409 * loadb command (load binary) included
413 #define START_CHAR 0x01
414 #define ETX_CHAR 0x03
415 #define END_CHAR 0x0D
417 #define K_ESCAPE 0x23
418 #define SEND_TYPE 'S'
419 #define DATA_TYPE 'D'
421 #define NACK_TYPE 'N'
422 #define BREAK_TYPE 'B'
423 #define tochar(x) ((char) (((x) + SPACE) & 0xff))
424 #define untochar(x) ((int) (((x) - SPACE) & 0xff))
426 static void set_kerm_bin_mode(unsigned long *);
427 static int k_recv(void);
428 static ulong
load_serial_bin (ulong offset
);
431 char his_eol
; /* character he needs at end of packet */
432 int his_pad_count
; /* number of pad chars he needs */
433 char his_pad_char
; /* pad chars he needs */
434 char his_quote
; /* quote chars he'll use */
436 int do_load_serial_bin (cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *argv
[])
440 int load_baudrate
, current_baudrate
;
444 /* pre-set offset from CONFIG_SYS_LOAD_ADDR */
445 offset
= CONFIG_SYS_LOAD_ADDR
;
447 /* pre-set offset from $loadaddr */
448 if ((s
= getenv("loadaddr")) != NULL
) {
449 offset
= simple_strtoul(s
, NULL
, 16);
452 load_baudrate
= current_baudrate
= gd
->baudrate
;
455 offset
= simple_strtoul(argv
[1], NULL
, 16);
458 load_baudrate
= (int)simple_strtoul(argv
[2], NULL
, 10);
460 /* default to current baudrate */
461 if (load_baudrate
== 0)
462 load_baudrate
= current_baudrate
;
465 if (load_baudrate
!= current_baudrate
) {
466 printf ("## Switch baudrate to %d bps and press ENTER ...\n",
469 gd
->baudrate
= load_baudrate
;
478 if (strcmp(argv
[0],"loady")==0) {
479 printf ("## Ready for binary (ymodem) download "
480 "to 0x%08lX at %d bps...\n",
484 addr
= load_serial_ymodem (offset
);
488 printf ("## Ready for binary (kermit) download "
489 "to 0x%08lX at %d bps...\n",
492 addr
= load_serial_bin (offset
);
496 printf ("## Binary (kermit) download aborted\n");
499 printf ("## Start Addr = 0x%08lX\n", addr
);
503 if (load_baudrate
!= current_baudrate
) {
504 printf ("## Switch baudrate to %d bps and press ESC ...\n",
507 gd
->baudrate
= current_baudrate
;
511 if (getc() == 0x1B) /* ESC */
520 static ulong
load_serial_bin (ulong offset
)
525 set_kerm_bin_mode ((ulong
*) offset
);
529 * Gather any trailing characters (for instance, the ^D which
530 * is sent by 'cu' after sending a file), and give the
531 * box some time (100 * 1 ms)
533 for (i
=0; i
<100; ++i
) {
540 flush_cache (offset
, size
);
542 printf("## Total Size = 0x%08x = %d Bytes\n", size
, size
);
543 sprintf(buf
, "%X", size
);
544 setenv("filesize", buf
);
551 int count
= his_pad_count
;
557 /* converts escaped kermit char to binary char */
558 char ktrans (char in
)
560 if ((in
& 0x60) == 0x40) {
561 return (char) (in
& ~0x40);
562 } else if ((in
& 0x7f) == 0x3f) {
563 return (char) (in
| 0x40);
568 int chk1 (char *buffer
)
575 return (int) ((total
+ ((total
>> 6) & 0x03)) & 0x3f);
578 void s1_sendpacket (char *packet
)
587 void send_ack (int n
)
594 a_b
[4] = tochar (chk1 (&a_b
[1]));
600 void send_nack (int n
)
607 a_b
[4] = tochar (chk1 (&a_b
[1]));
614 void (*os_data_init
) (void);
615 void (*os_data_char
) (char new_char
);
616 static int os_data_state
, os_data_state_saved
;
617 static char *os_data_addr
, *os_data_addr_saved
;
618 static char *bin_start_address
;
620 static void bin_data_init (void)
623 os_data_addr
= bin_start_address
;
626 static void os_data_save (void)
628 os_data_state_saved
= os_data_state
;
629 os_data_addr_saved
= os_data_addr
;
632 static void os_data_restore (void)
634 os_data_state
= os_data_state_saved
;
635 os_data_addr
= os_data_addr_saved
;
638 static void bin_data_char (char new_char
)
640 switch (os_data_state
) {
642 *os_data_addr
++ = new_char
;
647 static void set_kerm_bin_mode (unsigned long *addr
)
649 bin_start_address
= (char *) addr
;
650 os_data_init
= bin_data_init
;
651 os_data_char
= bin_data_char
;
655 /* k_data_* simply handles the kermit escape translations */
656 static int k_data_escape
, k_data_escape_saved
;
657 void k_data_init (void)
663 void k_data_save (void)
665 k_data_escape_saved
= k_data_escape
;
669 void k_data_restore (void)
671 k_data_escape
= k_data_escape_saved
;
675 void k_data_char (char new_char
)
678 /* last char was escape - translate this character */
679 os_data_char (ktrans (new_char
));
682 if (new_char
== his_quote
) {
683 /* this char is escape - remember */
686 /* otherwise send this char as-is */
687 os_data_char (new_char
);
692 #define SEND_DATA_SIZE 20
693 char send_parms
[SEND_DATA_SIZE
];
696 /* handle_send_packet interprits the protocol info and builds and
697 sends an appropriate ack for what we can do */
698 void handle_send_packet (int n
)
703 /* initialize some protocol parameters */
704 his_eol
= END_CHAR
; /* default end of line character */
707 his_quote
= K_ESCAPE
;
709 /* ignore last character if it filled the buffer */
710 if (send_ptr
== &send_parms
[SEND_DATA_SIZE
- 1])
712 bytes
= send_ptr
- send_parms
; /* how many bytes we'll process */
716 /* handle MAXL - max length */
717 /* ignore what he says - most I'll take (here) is 94 */
718 a_b
[++length
] = tochar (94);
721 /* handle TIME - time you should wait for my packets */
722 /* ignore what he says - don't wait for my ack longer than 1 second */
723 a_b
[++length
] = tochar (1);
726 /* handle NPAD - number of pad chars I need */
727 /* remember what he says - I need none */
728 his_pad_count
= untochar (send_parms
[2]);
729 a_b
[++length
] = tochar (0);
732 /* handle PADC - pad chars I need */
733 /* remember what he says - I need none */
734 his_pad_char
= ktrans (send_parms
[3]);
735 a_b
[++length
] = 0x40; /* He should ignore this */
738 /* handle EOL - end of line he needs */
739 /* remember what he says - I need CR */
740 his_eol
= untochar (send_parms
[4]);
741 a_b
[++length
] = tochar (END_CHAR
);
744 /* handle QCTL - quote control char he'll use */
745 /* remember what he says - I'll use '#' */
746 his_quote
= send_parms
[5];
750 /* handle QBIN - 8-th bit prefixing */
751 /* ignore what he says - I refuse */
755 /* handle CHKT - the clock check type */
756 /* ignore what he says - I do type 1 (for now) */
760 /* handle REPT - the repeat prefix */
761 /* ignore what he says - I refuse (for now) */
765 /* handle CAPAS - the capabilities mask */
766 /* ignore what he says - I only do long packets - I don't do windows */
767 a_b
[++length
] = tochar (2); /* only long packets */
768 a_b
[++length
] = tochar (0); /* no windows */
769 a_b
[++length
] = tochar (94); /* large packet msb */
770 a_b
[++length
] = tochar (94); /* large packet lsb */
774 a_b
[1] = tochar (length
);
777 a_b
[++length
] = '\0';
778 a_b
[length
] = tochar (chk1 (&a_b
[1]));
779 a_b
[++length
] = his_eol
;
780 a_b
[++length
] = '\0';
784 /* k_recv receives a OS Open image file over kermit line */
785 static int k_recv (void)
788 char k_state
, k_state_saved
;
795 /* initialize some protocol parameters */
796 his_eol
= END_CHAR
; /* default end of line character */
799 his_quote
= K_ESCAPE
;
801 /* initialize the k_recv and k_data state machine */
805 k_state_saved
= k_state
;
807 n
= 0; /* just to get rid of a warning */
810 /* expect this "type" sequence (but don't check):
815 B: break transmission
818 /* enter main loop */
820 /* set the send packet pointer to begining of send packet parms */
821 send_ptr
= send_parms
;
823 /* With each packet, start summing the bytes starting with the length.
824 Save the current sequence number.
825 Note the type of the packet.
826 If a character less than SPACE (0x20) is received - error.
830 /* OLD CODE, Prior to checking sequence numbers */
831 /* first have all state machines save current states */
832 k_state_saved
= k_state
;
837 /* wait for the starting character or ^C */
840 case START_CHAR
: /* start packet */
842 case ETX_CHAR
: /* ^C waiting for packet */
849 /* get length of packet */
852 if ((new_char
& 0xE0) == 0)
854 sum
+= new_char
& 0xff;
855 length
= untochar (new_char
);
856 /* get sequence number */
858 if ((new_char
& 0xE0) == 0)
860 sum
+= new_char
& 0xff;
861 n
= untochar (new_char
);
864 /* NEW CODE - check sequence numbers for retried packets */
865 /* Note - this new code assumes that the sequence number is correctly
866 * received. Handling an invalid sequence number adds another layer
867 * of complexity that may not be needed - yet! At this time, I'm hoping
868 * that I don't need to buffer the incoming data packets and can write
869 * the data into memory in real time.
872 /* same sequence number, restore the previous state */
873 k_state
= k_state_saved
;
876 /* new sequence number, checkpoint the download */
878 k_state_saved
= k_state
;
883 /* get packet type */
885 if ((new_char
& 0xE0) == 0)
887 sum
+= new_char
& 0xff;
890 /* check for extended length */
892 /* (length byte was 0, decremented twice) */
893 /* get the two length bytes */
895 if ((new_char
& 0xE0) == 0)
897 sum
+= new_char
& 0xff;
898 len_hi
= untochar (new_char
);
900 if ((new_char
& 0xE0) == 0)
902 sum
+= new_char
& 0xff;
903 len_lo
= untochar (new_char
);
904 length
= len_hi
* 95 + len_lo
;
905 /* check header checksum */
907 if ((new_char
& 0xE0) == 0)
909 if (new_char
!= tochar ((sum
+ ((sum
>> 6) & 0x03)) & 0x3f))
911 sum
+= new_char
& 0xff;
912 /* --length; */ /* new length includes only data and block check to come */
914 /* bring in rest of packet */
917 if ((new_char
& 0xE0) == 0)
919 sum
+= new_char
& 0xff;
921 if (k_state
== DATA_TYPE
) {
922 /* pass on the data if this is a data packet */
923 k_data_char (new_char
);
924 } else if (k_state
== SEND_TYPE
) {
925 /* save send pack in buffer as is */
926 *send_ptr
++ = new_char
;
927 /* if too much data, back off the pointer */
928 if (send_ptr
>= &send_parms
[SEND_DATA_SIZE
])
932 /* get and validate checksum character */
934 if ((new_char
& 0xE0) == 0)
936 if (new_char
!= tochar ((sum
+ ((sum
>> 6) & 0x03)) & 0x3f))
940 if (new_char
!= END_CHAR
) {
942 /* restore state machines */
943 k_state
= k_state_saved
;
945 /* send a negative acknowledge packet in */
947 } else if (k_state
== SEND_TYPE
) {
948 /* crack the protocol parms, build an appropriate ack packet */
949 handle_send_packet (n
);
951 /* send simple acknowledge packet in */
953 /* quit if end of transmission */
954 if (k_state
== BREAK_TYPE
)
958 return ((ulong
) os_data_addr
- (ulong
) bin_start_address
);
961 static int getcxmodem(void) {
966 static ulong
load_serial_ymodem (ulong offset
)
972 connection_info_t info
;
973 char ymodemBuf
[1024];
974 ulong store_addr
= ~0;
978 info
.mode
= xyzModem_ymodem
;
979 res
= xyzModem_stream_open (&info
, &err
);
983 xyzModem_stream_read (ymodemBuf
, 1024, &err
)) > 0) {
984 store_addr
= addr
+ offset
;
987 #ifndef CONFIG_SYS_NO_FLASH
988 if (addr2info (store_addr
)) {
991 rc
= flash_write ((char *) ymodemBuf
,
1000 memcpy ((char *) (store_addr
), ymodemBuf
,
1006 printf ("%s\n", xyzModem_error (err
));
1009 xyzModem_stream_close (&err
);
1010 xyzModem_stream_terminate (false, &getcxmodem
);
1013 flush_cache (offset
, size
);
1015 printf ("## Total Size = 0x%08x = %d Bytes\n", size
, size
);
1016 sprintf (buf
, "%X", size
);
1017 setenv ("filesize", buf
);
1024 /* -------------------------------------------------------------------- */
1026 #if defined(CONFIG_CMD_LOADS)
1028 #ifdef CONFIG_SYS_LOADS_BAUD_CHANGE
1030 loads
, 3, 0, do_load_serial
,
1031 "load S-Record file over serial line",
1032 "[ off ] [ baud ]\n"
1033 " - load S-Record file over serial line"
1034 " with offset 'off' and baudrate 'baud'"
1037 #else /* ! CONFIG_SYS_LOADS_BAUD_CHANGE */
1039 loads
, 2, 0, do_load_serial
,
1040 "load S-Record file over serial line",
1042 " - load S-Record file over serial line with offset 'off'"
1044 #endif /* CONFIG_SYS_LOADS_BAUD_CHANGE */
1047 * SAVES always requires LOADS support, but not vice versa
1051 #if defined(CONFIG_CMD_SAVES)
1052 #ifdef CONFIG_SYS_LOADS_BAUD_CHANGE
1054 saves
, 4, 0, do_save_serial
,
1055 "save S-Record file over serial line",
1056 "[ off ] [size] [ baud ]\n"
1057 " - save S-Record file over serial line"
1058 " with offset 'off', size 'size' and baudrate 'baud'"
1060 #else /* ! CONFIG_SYS_LOADS_BAUD_CHANGE */
1062 saves
, 3, 0, do_save_serial
,
1063 "save S-Record file over serial line",
1065 " - save S-Record file over serial line with offset 'off' and size 'size'"
1067 #endif /* CONFIG_SYS_LOADS_BAUD_CHANGE */
1072 #if defined(CONFIG_CMD_LOADB)
1074 loadb
, 3, 0, do_load_serial_bin
,
1075 "load binary file over serial line (kermit mode)",
1076 "[ off ] [ baud ]\n"
1077 " - load binary file over serial line"
1078 " with offset 'off' and baudrate 'baud'"
1082 loady
, 3, 0, do_load_serial_bin
,
1083 "load binary file over serial line (ymodem mode)",
1084 "[ off ] [ baud ]\n"
1085 " - load binary file over serial line"
1086 " with offset 'off' and baudrate 'baud'"
1091 /* -------------------------------------------------------------------- */
1093 #if defined(CONFIG_CMD_HWFLOW)
1094 int do_hwflow (cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *argv
[])
1096 extern int hwflow_onoff(int);
1099 if (strcmp(argv
[1], "off") == 0)
1102 if (strcmp(argv
[1], "on") == 0)
1107 printf("RTS/CTS hardware flow control: %s\n", hwflow_onoff(0) ? "on" : "off");
1111 /* -------------------------------------------------------------------- */
1114 hwflow
, 2, 0, do_hwflow
,
1115 "turn RTS/CTS hardware flow control in serial line on/off",