533 lines
12 KiB
C
533 lines
12 KiB
C
/* $NetBSD: download.c,v 1.1 1995/10/06 21:00:16 phil Exp $ */
|
|
|
|
/*
|
|
Hacked by Phil Nelson for use with NetBSD, 10/5/95.
|
|
This source is in the public domain except for the makeraw function.
|
|
|
|
The upload part of this program is taken from Bruce's ROM debugger
|
|
code.
|
|
|
|
For NetBSD, the usages are:
|
|
|
|
download file
|
|
- open "file" and ship it out standard output with the
|
|
format expected by the pc532 ROM monitor download
|
|
command.
|
|
|
|
download -r nfile
|
|
- standard input was generated by a "download file" command.
|
|
Capture it, checking the CRC and store it in "nfile".
|
|
|
|
|
|
Note: This program uses termios.
|
|
|
|
Date: Tue, 27 Feb 90 11:47:38 pst
|
|
From: Bruce Culbertson <culberts@hplwbc.hpl.hp.com>
|
|
To: pc532@daver.bungi.com
|
|
Subject: Re: ROM Debugger -- download command..
|
|
|
|
John L. Connin <johnc%manatee%uunet@daver> writes:
|
|
> Dave, what data format / protocol does the ROM debugger 'download' command
|
|
> expect ??
|
|
|
|
Here is the download program which I run at the other end of the
|
|
serial line -- in my case, on an AT clone. The download protocol
|
|
is explained in the comments in the program. I just recently added
|
|
the download command to the monitor so let me know if you have
|
|
problems with it or if you wish it worked differently.
|
|
|
|
Bruce Culbertson
|
|
----------------------------------------------------------------------
|
|
*/
|
|
/* MS-DOS Program for downloading to the NSC32000 Monitor. Use this as a
|
|
* template for writing downloaders for other OS's. Compile the MS-DOS
|
|
* version with the Microsoft C compiler.
|
|
*
|
|
* Bruce Culbertson 18 February 1990
|
|
*/
|
|
|
|
/* Instructions for use:
|
|
*
|
|
* machine prompt, command, etc.
|
|
* -------------------------------------------------------------------
|
|
* 32000 Command (? for help): download <address>
|
|
* MS-DOS [exit terminal emulator]
|
|
* MS-DOS C> <this program> <file name to download>
|
|
* MS-DOS [re-enter terminal emulator]
|
|
* 32000 [hit return to get status of download]
|
|
* 32000 Command (? for help): ...
|
|
*
|
|
* At any point you can send control-C (e.g. using your terminal emulator)
|
|
* to the 32000 monitor to abort the download and return to the monitor
|
|
* prompt.
|
|
*/
|
|
|
|
/* Download protocol:
|
|
*
|
|
* <start mark> <length> <data> <CRC>
|
|
*
|
|
* Below, the sending machine is called SRC, receiving machine is DST.
|
|
* Eight bit characters are used.
|
|
*
|
|
* Control-C (0x03) aborts the transfer. This capability is nice
|
|
* to have if, for example, length is garbled and the DST expects
|
|
* billions of characters. Since any byte of <length>, <data>,
|
|
* or <CRC> could be control-C, we need to have a quote character.
|
|
* I use ESC (0x1b). Thus, control-C and ESC are sent as
|
|
* {0x1b 0x03} and {0x1b 0x1b}, respectively.
|
|
*
|
|
* Start mark:
|
|
* This is a colon. When SRC begins sending, DST loops until it sees
|
|
* the start mark. Thus, if spurious characters are sent as the
|
|
* user switches from terminal emulator to download program on SRC,
|
|
* DST can ignore them.
|
|
*
|
|
* Length:
|
|
* Four bytes, least significant first. The length is number of
|
|
* data bytes to be transfered, not including quote characters.
|
|
* The two CRC bytes are also not included in the length.
|
|
*
|
|
* Data:
|
|
* A byte is sent as a byte, with quoting if necessary.
|
|
*
|
|
* CRC:
|
|
* Two bytes, least significant first. Use CCITT CRC generator
|
|
* polynomial (x^16 + x^12 + x^5 + 1). Compute on data only (not
|
|
* length or start) and exclude quotes. (This is the same CRC
|
|
* as computed by Minix's CRC command.)
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <fcntl.h>
|
|
|
|
#ifdef MSDOS
|
|
|
|
# define OPEN_FLAGS (O_RDONLY | O_BINARY)
|
|
# define off_t long
|
|
# define DEFAULT_PORT 1
|
|
long lseek();
|
|
int port_num = DEFAULT_PORT;
|
|
int port;
|
|
|
|
#else
|
|
|
|
# include <unistd.h>
|
|
# define OPEN_FLAGS O_RDONLY
|
|
|
|
#endif
|
|
|
|
#define CCITT_GEN 0x11021 /* x^16 + x^12 + x^5 + 1 */
|
|
#define BUFSZ 0x1000
|
|
#define ESC 0x1b
|
|
#define CTL_C 0x03
|
|
#define START ':'
|
|
|
|
char buf[BUFSZ];
|
|
long write_data(), write_header();
|
|
|
|
void putch ();
|
|
|
|
void
|
|
usage(name)
|
|
char *name;
|
|
{
|
|
fprintf (stderr, "usage: %s [-r] <file>\n", name);
|
|
exit (-1);
|
|
}
|
|
|
|
/* Output a character. If it is a CLT_C or ESC, then quote (preceed)
|
|
* it with a ESC.
|
|
*/
|
|
void
|
|
write_ch (c)
|
|
int c;
|
|
{
|
|
if (c == ESC || c == CTL_C)
|
|
putch (ESC);
|
|
putch (c);
|
|
}
|
|
|
|
/* Write two CRC bytes, LSB first.
|
|
*/
|
|
void
|
|
write_crc (crc)
|
|
long crc;
|
|
{
|
|
write_ch ((int)((crc >> 0) & 0xff));
|
|
write_ch ((int)((crc >> 8) & 0xff));
|
|
}
|
|
|
|
|
|
/* Given old CRC and new character, return new CRC. Uses standard
|
|
* CCITT CRC generator polynomial.
|
|
*/
|
|
unsigned long
|
|
update_crc (crc, ch)
|
|
long crc;
|
|
int ch;
|
|
{
|
|
int i;
|
|
|
|
for (i = 0x80; i; i >>= 1) {
|
|
crc = (crc << 1) | (i & ch? 1: 0);
|
|
if (crc & 0x10000) crc ^= CCITT_GEN;
|
|
}
|
|
return crc;
|
|
}
|
|
|
|
/* Write header. Format is a colon followed by four byte length,
|
|
* LSB first. Length is the number of data bytes after quotes are
|
|
* removed.
|
|
*/
|
|
long
|
|
write_header (fd)
|
|
int fd;
|
|
{
|
|
long len;
|
|
|
|
if (0 == (len = lseek (fd, (off_t)0, 2))) {
|
|
fprintf (stderr, "file length is zero\n");
|
|
exit (-1);
|
|
}
|
|
lseek (fd, (off_t)0, 0);
|
|
write_ch (START);
|
|
write_ch ((int)((len >> 0) & 0xff));
|
|
write_ch ((int)((len >> 8) & 0xff));
|
|
write_ch ((int)((len >> 16) & 0xff));
|
|
write_ch ((int)((len >> 24) & 0xff));
|
|
return len;
|
|
}
|
|
|
|
/* Write data.
|
|
*/
|
|
long
|
|
write_data (fd)
|
|
int fd;
|
|
{
|
|
long len, crc = 0;
|
|
char *p;
|
|
|
|
for (;;) {
|
|
len = read (fd, buf, BUFSZ);
|
|
if (-1 == len) {
|
|
fprintf (stderr, "read failed\n");
|
|
exit (-1);
|
|
}
|
|
if (len == 0) break;
|
|
for (p = buf; p < buf + len; ++p) {
|
|
write_ch (*p);
|
|
crc = update_crc (crc, *p);
|
|
}
|
|
}
|
|
return crc;
|
|
}
|
|
|
|
|
|
#ifdef MSDOS
|
|
/* Write hardware directly since BIOS and DOS are not reliable.
|
|
*/
|
|
#define COM_WR 0
|
|
#define COM_RD 0
|
|
#define COM_IER 1
|
|
#define COM_CTL 3
|
|
#define COM_STAT 5
|
|
#define COM_CTL_VAL 3 /* 8 bits, 1 stop, no parity */
|
|
#define COM_IER_VAL 0 /* interrupts off */
|
|
#define COM_TX_RDY 0x20
|
|
|
|
int old_control, old_ier;
|
|
|
|
/* Output a character to the serial port.
|
|
*/
|
|
void
|
|
putch (c)
|
|
int c;
|
|
{
|
|
int stat;
|
|
|
|
for (;;) {
|
|
stat = inp (port + COM_STAT);
|
|
if (stat & COM_TX_RDY) break;
|
|
}
|
|
outp (port + COM_WR, c);
|
|
}
|
|
|
|
/* Initialize serial port and save old values. Assume baud rate
|
|
* already set.
|
|
*/
|
|
init_port()
|
|
{
|
|
old_control = inp (port + COM_IER);
|
|
old_ier = inp (port + COM_CTL);
|
|
outp (port + COM_CTL, COM_CTL_VAL);
|
|
outp (port + COM_IER, COM_IER_VAL);
|
|
}
|
|
|
|
/* Restore serial port to old configuration.
|
|
*/
|
|
restore_port()
|
|
{
|
|
outp (port + COM_CTL, old_control);
|
|
outp (port + COM_IER, old_ier);
|
|
}
|
|
|
|
#else
|
|
|
|
/* dummy routines for Unix! */
|
|
void
|
|
putch (int c)
|
|
{
|
|
putchar (c);
|
|
}
|
|
|
|
#include <termios.h>
|
|
|
|
struct termios oldstate;
|
|
struct termios newstate;
|
|
int atty;
|
|
|
|
/* The following function is covered by: */
|
|
|
|
/*-
|
|
* Copyright (c) 1989, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
/*
|
|
* Make a pre-existing termios structure into "raw" mode: character-at-a-time
|
|
* mode with no characters interpreted, 8-bit data path.
|
|
*/
|
|
void
|
|
makeraw(t)
|
|
struct termios *t;
|
|
{
|
|
t->c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
|
|
t->c_oflag &= ~OPOST;
|
|
t->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
|
|
t->c_cflag &= ~(CSIZE|PARENB);
|
|
t->c_cflag |= CS8;
|
|
}
|
|
|
|
/* End of copyrighted material. */
|
|
|
|
void
|
|
init_port(int fd)
|
|
{
|
|
atty = isatty(fd);
|
|
if (atty) {
|
|
tcgetattr (fd, &oldstate);
|
|
newstate = oldstate;
|
|
makeraw(&newstate);
|
|
tcsetattr (fd, TCSANOW, &newstate);
|
|
}
|
|
}
|
|
|
|
void
|
|
restore_port(int fd)
|
|
{
|
|
if (atty) {
|
|
tcsetattr (fd, TCSANOW, &oldstate);
|
|
}
|
|
}
|
|
|
|
int
|
|
get_int (val, len)
|
|
unsigned long *val;
|
|
long len;
|
|
{
|
|
unsigned char c;
|
|
int shift = 0;
|
|
|
|
*val = 0;
|
|
|
|
while (len > 0) {
|
|
c = getchar ();
|
|
if (c == CTL_C) return 0; /* handle control-C */
|
|
if (c == ESC) c = getchar (); /* handle quote */
|
|
*val = *val + (c<<(8*shift++));
|
|
--len;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
int
|
|
get_file (f, len, crc)
|
|
FILE *f;
|
|
unsigned long len, *crc;
|
|
{
|
|
unsigned char c;
|
|
|
|
while (len > 0) {
|
|
c = getchar ();
|
|
if (c == CTL_C) return 0; /* handle control-C */
|
|
if (c == ESC) c = getchar (); /* handle quote */
|
|
fputc(c,f);
|
|
*crc = update_crc (*crc, c); /* compute crc, skip quote */
|
|
--len;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/* Upload end of the commands for Unix! */
|
|
|
|
void
|
|
upload (name)
|
|
char *name;
|
|
{
|
|
unsigned long crc, adr, len;
|
|
unsigned char c;
|
|
unsigned long xcrc;
|
|
FILE *f;
|
|
|
|
/* Open the file. */
|
|
f = fopen (name, "w");
|
|
if (f == NULL) {
|
|
printf ("Could not open \"%s\" for writing.\n", name);
|
|
exit(1);
|
|
}
|
|
|
|
/* set raw mode for input. */
|
|
init_port(0);
|
|
|
|
/* get start character */
|
|
for (;;) {
|
|
c = getchar();
|
|
if (c == START) break;
|
|
if (c == CTL_C) return;
|
|
}
|
|
|
|
/* get len in little endian form */
|
|
if (!get_int (&len, 4)) {
|
|
fprintf (stderr, "Upload interrupted.\n");
|
|
restore_port(0);
|
|
exit(2);
|
|
}
|
|
crc = 0; /* crc on data only */
|
|
if (!get_file (f, len, &crc)) { /* get data */
|
|
fprintf (stderr, "Upload interrupted.\n");
|
|
restore_port(0);
|
|
exit(3);
|
|
}
|
|
/* get crc in little endian */
|
|
if (!get_int (&xcrc, 2)) {
|
|
fprintf (stderr, "Upload interrupted.\n");
|
|
restore_port(0);
|
|
exit(4);
|
|
}
|
|
if (crc == xcrc) /* print status */
|
|
printf ("CRC ok, length = %d\n", len);
|
|
else
|
|
printf ("CRC error, received %d, expected %d, length %d\n",
|
|
xcrc, crc, len);
|
|
|
|
fclose (f);
|
|
|
|
/* Restore tty parameters. */
|
|
restore_port(0);
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
/* Main program */
|
|
int
|
|
main (argc, argv)
|
|
int argc;
|
|
char **argv;
|
|
{
|
|
int fd;
|
|
long crc, len;
|
|
|
|
#ifdef MSDOS
|
|
/* MSDOS argument processing */
|
|
if (argc == 3) {
|
|
if (1 != sscanf (argv[2], "%d", &port_num)) {
|
|
fprintf (stderr, "Bad serial port, use 1 or 2\n");
|
|
exit (-1);
|
|
}
|
|
--argc;
|
|
}
|
|
if (argc != 2) {
|
|
fprintf (stderr, "usage: %s <file> [<serial port>]\n", argv[0]);
|
|
exit (-1);
|
|
}
|
|
if (port_num == 1) port = 0x3f8;
|
|
else if (port_num == 2) port = 0x2f8;
|
|
else {
|
|
fprintf (stderr, "Bad serial port, use 1 or 2\n");
|
|
exit (-1);
|
|
}
|
|
|
|
#else
|
|
|
|
int do_receive = 0;
|
|
int ch;
|
|
extern int optind;
|
|
|
|
/* Unix argument processing */
|
|
while ((ch = getopt(argc, argv, "r")) != -1) {
|
|
switch (ch) {
|
|
|
|
case 'r': /* Receive end of a download, use "upload()". */
|
|
do_receive = 1;
|
|
break;
|
|
|
|
case '?':
|
|
default:
|
|
usage(argv[0]);
|
|
return (1);
|
|
}
|
|
}
|
|
|
|
if (argc-1 != optind)
|
|
usage(argv[0]);
|
|
|
|
if (do_receive) {
|
|
upload (argv[2]);
|
|
exit (0);
|
|
}
|
|
|
|
#endif
|
|
|
|
if (0 > (fd = open (argv[1], OPEN_FLAGS))) {
|
|
fprintf (stderr, "can not open \"%s\" for reading\n", argv[1]);
|
|
exit (-1);
|
|
}
|
|
|
|
init_port(1);
|
|
len = write_header (fd);
|
|
crc = write_data (fd);
|
|
write_crc (crc);
|
|
printf ("Length=%ld CRC=%ld\n", len, crc);
|
|
restore_port(1);
|
|
exit (0);
|
|
}
|