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@@ -0,0 +1,739 @@
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+//==========================================================================
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+//
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+// xyzModem.c
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+//
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+// RedBoot stream handler for xyzModem protocol
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+//
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+//==========================================================================
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+//####ECOSGPLCOPYRIGHTBEGIN####
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+// -------------------------------------------
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+// This file is part of eCos, the Embedded Configurable Operating System.
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+// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
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+// Copyright (C) 2002 Gary Thomas
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+//
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+// eCos is free software; you can redistribute it and/or modify it under
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+// the terms of the GNU General Public License as published by the Free
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+// Software Foundation; either version 2 or (at your option) any later version.
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+//
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+// eCos is distributed in the hope that it will be useful, but WITHOUT ANY
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+// WARRANTY; without even the implied warranty of MERCHANTABILITY or
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+// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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+// for more details.
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+//
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+// You should have received a copy of the GNU General Public License along
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+// with eCos; if not, write to the Free Software Foundation, Inc.,
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+// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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+//
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+// As a special exception, if other files instantiate templates or use macros
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+// or inline functions from this file, or you compile this file and link it
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+// with other works to produce a work based on this file, this file does not
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+// by itself cause the resulting work to be covered by the GNU General Public
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+// License. However the source code for this file must still be made available
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+// in accordance with section (3) of the GNU General Public License.
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+//
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+// This exception does not invalidate any other reasons why a work based on
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+// this file might be covered by the GNU General Public License.
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+//
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+// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
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+// at http://sources.redhat.com/ecos/ecos-license/
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+// -------------------------------------------
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+//####ECOSGPLCOPYRIGHTEND####
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+//==========================================================================
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+//#####DESCRIPTIONBEGIN####
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+//
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+// Author(s): gthomas
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+// Contributors: gthomas, tsmith, Yoshinori Sato
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+// Date: 2000-07-14
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+// Purpose:
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+// Description:
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+//
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+// This code is part of RedBoot (tm).
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+//
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+//####DESCRIPTIONEND####
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+//
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+//==========================================================================
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+#include <common.h>
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+#include <xyzModem.h>
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+#include <stdarg.h>
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+#include <crc.h>
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+
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+// Assumption - run xyzModem protocol over the console port
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+
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+// Values magic to the protocol
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+#define SOH 0x01
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+#define STX 0x02
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+#define EOT 0x04
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+#define ACK 0x06
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+#define BSP 0x08
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+#define NAK 0x15
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+#define CAN 0x18
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+#define EOF 0x1A // ^Z for DOS officionados
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+
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+#define USE_YMODEM_LENGTH
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+
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+// Data & state local to the protocol
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+static struct {
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+#ifdef REDBOOT
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+ hal_virtual_comm_table_t* __chan;
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+#else
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+ int *__chan;
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+#endif
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+ unsigned char pkt[1024], *bufp;
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+ unsigned char blk,cblk,crc1,crc2;
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+ unsigned char next_blk; // Expected block
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+ int len, mode, total_retries;
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+ int total_SOH, total_STX, total_CAN;
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+ bool crc_mode, at_eof, tx_ack;
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+#ifdef USE_YMODEM_LENGTH
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+ unsigned long file_length, read_length;
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+#endif
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+} xyz;
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+
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+#define xyzModem_CHAR_TIMEOUT 2000 // 2 seconds
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+#define xyzModem_MAX_RETRIES 20
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+#define xyzModem_MAX_RETRIES_WITH_CRC 10
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+#define xyzModem_CAN_COUNT 3 // Wait for 3 CAN before quitting
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+
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+
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+#ifndef REDBOOT //SB
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+typedef int cyg_int32;
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+int CYGACC_COMM_IF_GETC_TIMEOUT (char chan,char *c) {
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+#define DELAY 20
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+ unsigned long counter=0;
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+ while (!tstc() && (counter < xyzModem_CHAR_TIMEOUT*1000/DELAY)) {
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+ udelay(DELAY);
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+ counter++;
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+ }
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+ if (tstc()) {
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+ *c=getc();
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+ return 1;
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+ }
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+ return 0;
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+}
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+
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+void CYGACC_COMM_IF_PUTC(char x,char y) {
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+ putc(y);
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+}
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+
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+// Validate a hex character
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+__inline__ static bool
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+_is_hex(char c)
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+{
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+ return (((c >= '0') && (c <= '9')) ||
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+ ((c >= 'A') && (c <= 'F')) ||
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+ ((c >= 'a') && (c <= 'f')));
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+}
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+
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+// Convert a single hex nibble
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+__inline__ static int
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+_from_hex(char c)
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+{
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+ int ret = 0;
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+
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+ if ((c >= '0') && (c <= '9')) {
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+ ret = (c - '0');
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+ } else if ((c >= 'a') && (c <= 'f')) {
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+ ret = (c - 'a' + 0x0a);
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+ } else if ((c >= 'A') && (c <= 'F')) {
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+ ret = (c - 'A' + 0x0A);
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+ }
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+ return ret;
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+}
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+
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+// Convert a character to lower case
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+__inline__ static char
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+_tolower(char c)
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+{
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+ if ((c >= 'A') && (c <= 'Z')) {
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+ c = (c - 'A') + 'a';
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+ }
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+ return c;
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+}
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+
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+
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+
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+//
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+// Parse (scan) a number
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+//
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+bool
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+parse_num(char *s, unsigned long *val, char **es, char *delim)
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+{
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+ bool first = true;
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+ int radix = 10;
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+ char c;
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+ unsigned long result = 0;
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+ int digit;
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+
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+ while (*s == ' ') s++;
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+ while (*s) {
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+ if (first && (s[0] == '0') && (_tolower(s[1]) == 'x')) {
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+ radix = 16;
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+ s += 2;
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+ }
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+ first = false;
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+ c = *s++;
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+ if (_is_hex(c) && ((digit = _from_hex(c)) < radix)) {
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+ // Valid digit
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+#ifdef CYGPKG_HAL_MIPS
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+ // FIXME: tx49 compiler generates 0x2539018 for MUL which
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+ // isn't any good.
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+ if (16 == radix)
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+ result = result << 4;
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+ else
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+ result = 10 * result;
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+ result += digit;
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+#else
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+ result = (result * radix) + digit;
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+#endif
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+ } else {
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+ if (delim != (char *)0) {
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+ // See if this character is one of the delimiters
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+ char *dp = delim;
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+ while (*dp && (c != *dp)) dp++;
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+ if (*dp) break; // Found a good delimiter
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+ }
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+ return false; // Malformatted number
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+ }
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+ }
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+ *val = result;
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+ if (es != (char **)0) {
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+ *es = s;
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+ }
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+ return true;
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+}
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+
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+#endif
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+
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+#define USE_SPRINTF
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+#ifdef DEBUG
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+#ifndef USE_SPRINTF
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+//
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+// Note: this debug setup only works if the target platform has two serial ports
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+// available so that the other one (currently only port 1) can be used for debug
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+// messages.
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+//
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+static int
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+zm_dprintf(char *fmt, ...)
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+{
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+ int cur_console;
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+ va_list args;
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+
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+ va_start(args, fmt);
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+#ifdef REDBOOT
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+ cur_console = CYGACC_CALL_IF_SET_CONSOLE_COMM(CYGNUM_CALL_IF_SET_COMM_ID_QUERY_CURRENT);
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+ CYGACC_CALL_IF_SET_CONSOLE_COMM(1);
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+#endif
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+ diag_vprintf(fmt, args);
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+#ifdef REDBOOT
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+ CYGACC_CALL_IF_SET_CONSOLE_COMM(cur_console);
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+#endif
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+}
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+
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+static void
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+zm_flush(void)
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+{
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+}
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+
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+#else
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+//
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+// Note: this debug setup works by storing the strings in a fixed buffer
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+//
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+#define FINAL
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+#ifdef FINAL
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+static char *zm_out = (char *)0x00380000;
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+static char *zm_out_start = (char *)0x00380000;
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+#else
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+static char zm_buf[8192];
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+static char *zm_out=zm_buf;
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+static char *zm_out_start = zm_buf;
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+
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+#endif
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+static int
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+zm_dprintf(char *fmt, ...)
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+{
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+ int len;
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+ va_list args;
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+
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+ va_start(args, fmt);
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+ len = diag_vsprintf(zm_out, fmt, args);
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+ zm_out += len;
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+ return len;
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+}
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+
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+static void
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+zm_flush(void)
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+{
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+ char *p = zm_out_start;
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+#ifdef REDBOOT
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+ while (*p) mon_write_char(*p++);
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+#endif
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+ zm_out = zm_out_start;
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+}
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+#endif
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+
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+static void
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+zm_dump_buf(void *buf, int len)
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+{
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+#ifdef REDBOOT
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+ diag_vdump_buf_with_offset(zm_dprintf, buf, len, 0);
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+#else
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+
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+#endif
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+}
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+
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+static unsigned char zm_buf[2048];
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+static unsigned char *zm_bp;
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+
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+static void
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+zm_new(void)
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+{
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+ zm_bp = zm_buf;
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+}
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+
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+static void
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+zm_save(unsigned char c)
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+{
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+ *zm_bp++ = c;
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+}
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+
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+static void
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+zm_dump(int line)
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+{
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+ zm_dprintf("Packet at line: %d\n", line);
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+ zm_dump_buf(zm_buf, zm_bp-zm_buf);
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+}
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+
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+#define ZM_DEBUG(x) x
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+#else
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+#define ZM_DEBUG(x)
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+#endif
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+
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+// Wait for the line to go idle
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+static void
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+xyzModem_flush(void)
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+{
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+ int res;
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+ char c;
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+ while (true) {
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+ res = CYGACC_COMM_IF_GETC_TIMEOUT(*xyz.__chan, &c);
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+ if (!res) return;
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+ }
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+}
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+
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+static int
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+xyzModem_get_hdr(void)
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+{
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+ char c;
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+ int res;
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+ bool hdr_found = false;
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+ int i, can_total, hdr_chars;
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+ unsigned short cksum;
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+
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+ ZM_DEBUG(zm_new());
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+ // Find the start of a header
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+ can_total = 0;
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+ hdr_chars = 0;
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+
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+ if (xyz.tx_ack) {
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+ CYGACC_COMM_IF_PUTC(*xyz.__chan, ACK);
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+ xyz.tx_ack = false;
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+ }
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+ while (!hdr_found) {
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+ res = CYGACC_COMM_IF_GETC_TIMEOUT(*xyz.__chan, &c);
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+ ZM_DEBUG(zm_save(c));
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+ if (res) {
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+ hdr_chars++;
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+ switch (c) {
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+ case SOH:
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+ xyz.total_SOH++;
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+ case STX:
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+ if (c == STX) xyz.total_STX++;
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+ hdr_found = true;
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+ break;
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+ case CAN:
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+ xyz.total_CAN++;
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+ ZM_DEBUG(zm_dump(__LINE__));
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+ if (++can_total == xyzModem_CAN_COUNT) {
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+ return xyzModem_cancel;
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+ } else {
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+ // Wait for multiple CAN to avoid early quits
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+ break;
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+ }
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+ case EOT:
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+ // EOT only supported if no noise
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+ if (hdr_chars == 1) {
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+ CYGACC_COMM_IF_PUTC(*xyz.__chan, ACK);
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+ ZM_DEBUG(zm_dprintf("ACK on EOT #%d\n", __LINE__));
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+ ZM_DEBUG(zm_dump(__LINE__));
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+ return xyzModem_eof;
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+ }
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+ default:
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+ // Ignore, waiting for start of header
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+ ;
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+ }
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+ } else {
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+ // Data stream timed out
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+ xyzModem_flush(); // Toss any current input
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+ ZM_DEBUG(zm_dump(__LINE__));
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+ CYGACC_CALL_IF_DELAY_US((cyg_int32)250000);
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+ return xyzModem_timeout;
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+ }
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+ }
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+
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+ // Header found, now read the data
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+ res = CYGACC_COMM_IF_GETC_TIMEOUT(*xyz.__chan, &xyz.blk);
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+ ZM_DEBUG(zm_save(xyz.blk));
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+ if (!res) {
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+ ZM_DEBUG(zm_dump(__LINE__));
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+ return xyzModem_timeout;
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+ }
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+ res = CYGACC_COMM_IF_GETC_TIMEOUT(*xyz.__chan, &xyz.cblk);
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+ ZM_DEBUG(zm_save(xyz.cblk));
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+ if (!res) {
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+ ZM_DEBUG(zm_dump(__LINE__));
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+ return xyzModem_timeout;
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+ }
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+ xyz.len = (c == SOH) ? 128 : 1024;
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+ xyz.bufp = xyz.pkt;
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+ for (i = 0; i < xyz.len; i++) {
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+ res = CYGACC_COMM_IF_GETC_TIMEOUT(*xyz.__chan, &c);
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+ ZM_DEBUG(zm_save(c));
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+ if (res) {
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+ xyz.pkt[i] = c;
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+ } else {
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+ ZM_DEBUG(zm_dump(__LINE__));
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+ return xyzModem_timeout;
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+ }
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+ }
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+ res = CYGACC_COMM_IF_GETC_TIMEOUT(*xyz.__chan, &xyz.crc1);
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+ ZM_DEBUG(zm_save(xyz.crc1));
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+ if (!res) {
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+ ZM_DEBUG(zm_dump(__LINE__));
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+ return xyzModem_timeout;
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+ }
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+ if (xyz.crc_mode) {
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+ res = CYGACC_COMM_IF_GETC_TIMEOUT(*xyz.__chan, &xyz.crc2);
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+ ZM_DEBUG(zm_save(xyz.crc2));
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+ if (!res) {
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+ ZM_DEBUG(zm_dump(__LINE__));
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+ return xyzModem_timeout;
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+ }
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+ }
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+ ZM_DEBUG(zm_dump(__LINE__));
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+ // Validate the message
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+ if ((xyz.blk ^ xyz.cblk) != (unsigned char)0xFF) {
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+ ZM_DEBUG(zm_dprintf("Framing error - blk: %x/%x/%x\n", xyz.blk, xyz.cblk, (xyz.blk ^ xyz.cblk)));
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+ ZM_DEBUG(zm_dump_buf(xyz.pkt, xyz.len));
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|
|
+ xyzModem_flush();
|
|
|
+ return xyzModem_frame;
|
|
|
+ }
|
|
|
+ // Verify checksum/CRC
|
|
|
+ if (xyz.crc_mode) {
|
|
|
+ cksum = cyg_crc16(xyz.pkt, xyz.len);
|
|
|
+ if (cksum != ((xyz.crc1 << 8) | xyz.crc2)) {
|
|
|
+ ZM_DEBUG(zm_dprintf("CRC error - recvd: %02x%02x, computed: %x\n",
|
|
|
+ xyz.crc1, xyz.crc2, cksum & 0xFFFF));
|
|
|
+ return xyzModem_cksum;
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ cksum = 0;
|
|
|
+ for (i = 0; i < xyz.len; i++) {
|
|
|
+ cksum += xyz.pkt[i];
|
|
|
+ }
|
|
|
+ if (xyz.crc1 != (cksum & 0xFF)) {
|
|
|
+ ZM_DEBUG(zm_dprintf("Checksum error - recvd: %x, computed: %x\n", xyz.crc1, cksum & 0xFF));
|
|
|
+ return xyzModem_cksum;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ // If we get here, the message passes [structural] muster
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+int
|
|
|
+xyzModem_stream_open(connection_info_t *info, int *err)
|
|
|
+{
|
|
|
+ int console_chan, stat=0;
|
|
|
+ int retries = xyzModem_MAX_RETRIES;
|
|
|
+ int crc_retries = xyzModem_MAX_RETRIES_WITH_CRC;
|
|
|
+
|
|
|
+// ZM_DEBUG(zm_out = zm_out_start);
|
|
|
+#ifdef xyzModem_zmodem
|
|
|
+ if (info->mode == xyzModem_zmodem) {
|
|
|
+ *err = xyzModem_noZmodem;
|
|
|
+ return -1;
|
|
|
+ }
|
|
|
+#endif
|
|
|
+
|
|
|
+#ifdef REDBOOT
|
|
|
+ // Set up the I/O channel. Note: this allows for using a different port in the future
|
|
|
+ console_chan = CYGACC_CALL_IF_SET_CONSOLE_COMM(CYGNUM_CALL_IF_SET_COMM_ID_QUERY_CURRENT);
|
|
|
+ if (info->chan >= 0) {
|
|
|
+ CYGACC_CALL_IF_SET_CONSOLE_COMM(info->chan);
|
|
|
+ } else {
|
|
|
+ CYGACC_CALL_IF_SET_CONSOLE_COMM(console_chan);
|
|
|
+ }
|
|
|
+ xyz.__chan = CYGACC_CALL_IF_CONSOLE_PROCS();
|
|
|
+
|
|
|
+ CYGACC_CALL_IF_SET_CONSOLE_COMM(console_chan);
|
|
|
+ CYGACC_COMM_IF_CONTROL(*xyz.__chan, __COMMCTL_SET_TIMEOUT, xyzModem_CHAR_TIMEOUT);
|
|
|
+#else
|
|
|
+// TODO: CHECK !
|
|
|
+ int dummy;
|
|
|
+ xyz.__chan=&dummy;
|
|
|
+#endif
|
|
|
+ xyz.len = 0;
|
|
|
+ xyz.crc_mode = true;
|
|
|
+ xyz.at_eof = false;
|
|
|
+ xyz.tx_ack = false;
|
|
|
+ xyz.mode = info->mode;
|
|
|
+ xyz.total_retries = 0;
|
|
|
+ xyz.total_SOH = 0;
|
|
|
+ xyz.total_STX = 0;
|
|
|
+ xyz.total_CAN = 0;
|
|
|
+#ifdef USE_YMODEM_LENGTH
|
|
|
+ xyz.read_length = 0;
|
|
|
+ xyz.file_length = 0;
|
|
|
+#endif
|
|
|
+
|
|
|
+ CYGACC_COMM_IF_PUTC(*xyz.__chan, (xyz.crc_mode ? 'C' : NAK));
|
|
|
+
|
|
|
+ if (xyz.mode == xyzModem_xmodem) {
|
|
|
+ // X-modem doesn't have an information header - exit here
|
|
|
+ xyz.next_blk = 1;
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+
|
|
|
+ while (retries-- > 0) {
|
|
|
+ stat = xyzModem_get_hdr();
|
|
|
+ if (stat == 0) {
|
|
|
+ // Y-modem file information header
|
|
|
+ if (xyz.blk == 0) {
|
|
|
+#ifdef USE_YMODEM_LENGTH
|
|
|
+ // skip filename
|
|
|
+ while (*xyz.bufp++);
|
|
|
+ // get the length
|
|
|
+ parse_num(xyz.bufp, &xyz.file_length, NULL, " ");
|
|
|
+#endif
|
|
|
+ // The rest of the file name data block quietly discarded
|
|
|
+ xyz.tx_ack = true;
|
|
|
+ }
|
|
|
+ xyz.next_blk = 1;
|
|
|
+ xyz.len = 0;
|
|
|
+ return 0;
|
|
|
+ } else
|
|
|
+ if (stat == xyzModem_timeout) {
|
|
|
+ if (--crc_retries <= 0) xyz.crc_mode = false;
|
|
|
+ CYGACC_CALL_IF_DELAY_US(5*100000); // Extra delay for startup
|
|
|
+ CYGACC_COMM_IF_PUTC(*xyz.__chan, (xyz.crc_mode ? 'C' : NAK));
|
|
|
+ xyz.total_retries++;
|
|
|
+ ZM_DEBUG(zm_dprintf("NAK (%d)\n", __LINE__));
|
|
|
+ }
|
|
|
+ if (stat == xyzModem_cancel) {
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ *err = stat;
|
|
|
+ ZM_DEBUG(zm_flush());
|
|
|
+ return -1;
|
|
|
+}
|
|
|
+
|
|
|
+int
|
|
|
+xyzModem_stream_read(char *buf, int size, int *err)
|
|
|
+{
|
|
|
+ int stat, total, len;
|
|
|
+ int retries;
|
|
|
+
|
|
|
+ total = 0;
|
|
|
+ stat = xyzModem_cancel;
|
|
|
+ // Try and get 'size' bytes into the buffer
|
|
|
+ while (!xyz.at_eof && (size > 0)) {
|
|
|
+ if (xyz.len == 0) {
|
|
|
+ retries = xyzModem_MAX_RETRIES;
|
|
|
+ while (retries-- > 0) {
|
|
|
+ stat = xyzModem_get_hdr();
|
|
|
+ if (stat == 0) {
|
|
|
+ if (xyz.blk == xyz.next_blk) {
|
|
|
+ xyz.tx_ack = true;
|
|
|
+ ZM_DEBUG(zm_dprintf("ACK block %d (%d)\n", xyz.blk, __LINE__));
|
|
|
+ xyz.next_blk = (xyz.next_blk + 1) & 0xFF;
|
|
|
+
|
|
|
+#if defined(xyzModem_zmodem) || defined(USE_YMODEM_LENGTH)
|
|
|
+ if (xyz.mode == xyzModem_xmodem || xyz.file_length == 0) {
|
|
|
+#else
|
|
|
+ if (1) {
|
|
|
+#endif
|
|
|
+ // Data blocks can be padded with ^Z (EOF) characters
|
|
|
+ // This code tries to detect and remove them
|
|
|
+ if ((xyz.bufp[xyz.len-1] == EOF) &&
|
|
|
+ (xyz.bufp[xyz.len-2] == EOF) &&
|
|
|
+ (xyz.bufp[xyz.len-3] == EOF)) {
|
|
|
+ while (xyz.len && (xyz.bufp[xyz.len-1] == EOF)) {
|
|
|
+ xyz.len--;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+#ifdef USE_YMODEM_LENGTH
|
|
|
+ // See if accumulated length exceeds that of the file.
|
|
|
+ // If so, reduce size (i.e., cut out pad bytes)
|
|
|
+ // Only do this for Y-modem (and Z-modem should it ever
|
|
|
+ // be supported since it can fall back to Y-modem mode).
|
|
|
+ if (xyz.mode != xyzModem_xmodem && 0 != xyz.file_length) {
|
|
|
+ xyz.read_length += xyz.len;
|
|
|
+ if (xyz.read_length > xyz.file_length) {
|
|
|
+ xyz.len -= (xyz.read_length - xyz.file_length);
|
|
|
+ }
|
|
|
+ }
|
|
|
+#endif
|
|
|
+ break;
|
|
|
+ } else if (xyz.blk == ((xyz.next_blk - 1) & 0xFF)) {
|
|
|
+ // Just re-ACK this so sender will get on with it
|
|
|
+ CYGACC_COMM_IF_PUTC(*xyz.__chan, ACK);
|
|
|
+ continue; // Need new header
|
|
|
+ } else {
|
|
|
+ stat = xyzModem_sequence;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if (stat == xyzModem_cancel) {
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ if (stat == xyzModem_eof) {
|
|
|
+ CYGACC_COMM_IF_PUTC(*xyz.__chan, ACK);
|
|
|
+ ZM_DEBUG(zm_dprintf("ACK (%d)\n", __LINE__));
|
|
|
+ if (xyz.mode == xyzModem_ymodem) {
|
|
|
+ CYGACC_COMM_IF_PUTC(*xyz.__chan, (xyz.crc_mode ? 'C' : NAK));
|
|
|
+ xyz.total_retries++;
|
|
|
+ ZM_DEBUG(zm_dprintf("Reading Final Header\n"));
|
|
|
+ stat = xyzModem_get_hdr();
|
|
|
+ CYGACC_COMM_IF_PUTC(*xyz.__chan, ACK);
|
|
|
+ ZM_DEBUG(zm_dprintf("FINAL ACK (%d)\n", __LINE__));
|
|
|
+ }
|
|
|
+ xyz.at_eof = true;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ CYGACC_COMM_IF_PUTC(*xyz.__chan, (xyz.crc_mode ? 'C' : NAK));
|
|
|
+ xyz.total_retries++;
|
|
|
+ ZM_DEBUG(zm_dprintf("NAK (%d)\n", __LINE__));
|
|
|
+ }
|
|
|
+ if (stat < 0) {
|
|
|
+ *err = stat;
|
|
|
+ xyz.len = -1;
|
|
|
+ return total;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ // Don't "read" data from the EOF protocol package
|
|
|
+ if (!xyz.at_eof) {
|
|
|
+ len = xyz.len;
|
|
|
+ if (size < len) len = size;
|
|
|
+ memcpy(buf, xyz.bufp, len);
|
|
|
+ size -= len;
|
|
|
+ buf += len;
|
|
|
+ total += len;
|
|
|
+ xyz.len -= len;
|
|
|
+ xyz.bufp += len;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return total;
|
|
|
+}
|
|
|
+
|
|
|
+void
|
|
|
+xyzModem_stream_close(int *err)
|
|
|
+{
|
|
|
+ diag_printf("xyzModem - %s mode, %d(SOH)/%d(STX)/%d(CAN) packets, %d retries\n",
|
|
|
+ xyz.crc_mode ? "CRC" : "Cksum",
|
|
|
+ xyz.total_SOH, xyz.total_STX, xyz.total_CAN,
|
|
|
+ xyz.total_retries);
|
|
|
+ ZM_DEBUG(zm_flush());
|
|
|
+}
|
|
|
+
|
|
|
+// Need to be able to clean out the input buffer, so have to take the
|
|
|
+// getc
|
|
|
+void xyzModem_stream_terminate(bool abort, int (*getc)(void))
|
|
|
+{
|
|
|
+ int c;
|
|
|
+
|
|
|
+ if (abort) {
|
|
|
+ ZM_DEBUG(zm_dprintf("!!!! TRANSFER ABORT !!!!\n"));
|
|
|
+ switch (xyz.mode) {
|
|
|
+ case xyzModem_xmodem:
|
|
|
+ case xyzModem_ymodem:
|
|
|
+ // The X/YMODEM Spec seems to suggest that multiple CAN followed by an equal
|
|
|
+ // number of Backspaces is a friendly way to get the other end to abort.
|
|
|
+ CYGACC_COMM_IF_PUTC(*xyz.__chan,CAN);
|
|
|
+ CYGACC_COMM_IF_PUTC(*xyz.__chan,CAN);
|
|
|
+ CYGACC_COMM_IF_PUTC(*xyz.__chan,CAN);
|
|
|
+ CYGACC_COMM_IF_PUTC(*xyz.__chan,CAN);
|
|
|
+ CYGACC_COMM_IF_PUTC(*xyz.__chan,BSP);
|
|
|
+ CYGACC_COMM_IF_PUTC(*xyz.__chan,BSP);
|
|
|
+ CYGACC_COMM_IF_PUTC(*xyz.__chan,BSP);
|
|
|
+ CYGACC_COMM_IF_PUTC(*xyz.__chan,BSP);
|
|
|
+ // Now consume the rest of what's waiting on the line.
|
|
|
+ ZM_DEBUG(zm_dprintf("Flushing serial line.\n"));
|
|
|
+ xyzModem_flush();
|
|
|
+ xyz.at_eof = true;
|
|
|
+ break;
|
|
|
+#ifdef xyzModem_zmodem
|
|
|
+ case xyzModem_zmodem:
|
|
|
+ // Might support it some day I suppose.
|
|
|
+#endif
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ ZM_DEBUG(zm_dprintf("Engaging cleanup mode...\n"));
|
|
|
+ // Consume any trailing crap left in the inbuffer from
|
|
|
+ // previous recieved blocks. Since very few files are an exact multiple
|
|
|
+ // of the transfer block size, there will almost always be some gunk here.
|
|
|
+ // If we don't eat it now, RedBoot will think the user typed it.
|
|
|
+ ZM_DEBUG(zm_dprintf("Trailing gunk:\n"));
|
|
|
+ while ((c = (*getc)()) > -1) ;
|
|
|
+ ZM_DEBUG(zm_dprintf("\n"));
|
|
|
+ // Make a small delay to give terminal programs like minicom
|
|
|
+ // time to get control again after their file transfer program
|
|
|
+ // exits.
|
|
|
+ CYGACC_CALL_IF_DELAY_US((cyg_int32)250000);
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+char *
|
|
|
+xyzModem_error(int err)
|
|
|
+{
|
|
|
+ switch (err) {
|
|
|
+ case xyzModem_access:
|
|
|
+ return "Can't access file";
|
|
|
+ break;
|
|
|
+ case xyzModem_noZmodem:
|
|
|
+ return "Sorry, zModem not available yet";
|
|
|
+ break;
|
|
|
+ case xyzModem_timeout:
|
|
|
+ return "Timed out";
|
|
|
+ break;
|
|
|
+ case xyzModem_eof:
|
|
|
+ return "End of file";
|
|
|
+ break;
|
|
|
+ case xyzModem_cancel:
|
|
|
+ return "Cancelled";
|
|
|
+ break;
|
|
|
+ case xyzModem_frame:
|
|
|
+ return "Invalid framing";
|
|
|
+ break;
|
|
|
+ case xyzModem_cksum:
|
|
|
+ return "CRC/checksum error";
|
|
|
+ break;
|
|
|
+ case xyzModem_sequence:
|
|
|
+ return "Block sequence error";
|
|
|
+ break;
|
|
|
+ default:
|
|
|
+ return "Unknown error";
|
|
|
+ break;
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+//
|
|
|
+// RedBoot interface
|
|
|
+//
|
|
|
+#if 0 // SB
|
|
|
+GETC_IO_FUNCS(xyzModem_io, xyzModem_stream_open, xyzModem_stream_close,
|
|
|
+ xyzModem_stream_terminate, xyzModem_stream_read, xyzModem_error);
|
|
|
+RedBoot_load(xmodem, xyzModem_io, false, false, xyzModem_xmodem);
|
|
|
+RedBoot_load(ymodem, xyzModem_io, false, false, xyzModem_ymodem);
|
|
|
+#endif
|
Markus Klotzbuecher