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authorKyösti Mälkki <kyosti.malkki@gmail.com>2014-01-30 10:51:32 +0200
committerKyösti Mälkki <kyosti.malkki@gmail.com>2014-02-06 11:16:37 +0100
commit2113099e49dff8c985763521b7ad9f1d1c6bb89c (patch)
treee0f7a1a08543aed1dce0eefa8f7f50da8b06e47e /src
parent03731d776ccfff69ba5380dbf7ae136ed8d5b30c (diff)
downloadcoreboot-2113099e49dff8c985763521b7ad9f1d1c6bb89c.tar.xz
uart8250: Drop xmodem support
Unused and hard-coded to use uart8250 on IO. Change-Id: I3f84c50039a450a2ae97a5fd2af89992f8567e6c Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5137 Tested-by: build bot (Jenkins) Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Diffstat (limited to 'src')
-rw-r--r--src/lib/xmodem.c173
1 files changed, 0 insertions, 173 deletions
diff --git a/src/lib/xmodem.c b/src/lib/xmodem.c
deleted file mode 100644
index c3bb1d89f3..0000000000
--- a/src/lib/xmodem.c
+++ /dev/null
@@ -1,173 +0,0 @@
-/*
- Copyright 2006 Arastra, Inc.
- Copyright 2001, 2002 Georges Menie (www.menie.org)
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
-*/
-
-#include <string.h>
-#include <delay.h>
-#include <uart8250.h>
-
-static int _inbyte(int msec)
-{
- while (!uart8250_can_rx_byte(CONFIG_TTYS0_BASE)) {
- udelay(1000);
- if (msec-- <= 0)
- return -1;
- }
- return uart8250_rx_byte(CONFIG_TTYS0_BASE);
-}
-
-static void _outbyte(unsigned char c)
-{
- uart8250_tx_byte(CONFIG_TTYS0_BASE, c);
-}
-
-static unsigned short crc16_ccitt(const unsigned char *buf, int sz)
-{
- unsigned short crc = 0;
- while (--sz >= 0) {
- int i;
- crc ^= (unsigned short) *buf++ << 8;
- for (i = 0; i < 8; i++)
- if (crc & 0x8000)
- crc = crc << 1 ^ 0x1021;
- else
- crc <<= 1;
- }
- return crc;
-}
-
-#define SOH 0x01
-#define STX 0x02
-#define EOT 0x04
-#define ACK 0x06
-#define NAK 0x15
-#define CAN 0x18
-#define CTRLZ 0x1A
-
-#define DLY_1S 1000
-#define MAXRETRANS 25
-
-static int check(int crc, const unsigned char *buf, int sz)
-{
- if (crc) {
- unsigned short crc = crc16_ccitt(buf, sz);
- unsigned short tcrc = (buf[sz]<<8)+buf[sz+1];
- if (crc == tcrc)
- return 1;
- }
- else {
- int i;
- unsigned char cks = 0;
- for (i = 0; i < sz; ++i) {
- cks += buf[i];
- }
- if (cks == buf[sz])
- return 1;
- }
-
- return 0;
-}
-
-static void flushinput(void)
-{
- while (_inbyte(((DLY_1S)*3)>>1) >= 0)
- ;
-}
-
-int xmodemReceive(unsigned char *dest, int destsz)
-{
- unsigned char xbuff[1030]; /* 1024 for XModem 1k + 3 head chars + 2 crc + nul */
- unsigned char *p;
- int bufsz, crc = 0;
- unsigned char trychar = 'C';
- unsigned char packetno = 1;
- int i, c, len = 0;
- int retry, retrans = MAXRETRANS;
-
- for(;;) {
- for( retry = 0; retry < 16; ++retry) {
- if (trychar) _outbyte(trychar);
- if ((c = _inbyte((DLY_1S)<<1)) >= 0) {
- switch (c) {
- case SOH:
- bufsz = 128;
- goto start_recv;
- case STX:
- bufsz = 1024;
- goto start_recv;
- case EOT:
- flushinput();
- _outbyte(ACK);
- return len; /* normal end */
- case CAN:
- if ((c = _inbyte(DLY_1S)) == CAN) {
- flushinput();
- _outbyte(ACK);
- return -1; /* canceled by remote */
- }
- break;
- default:
- break;
- }
- }
- }
- if (trychar == 'C') { trychar = NAK; continue; }
- flushinput();
- _outbyte(CAN);
- _outbyte(CAN);
- _outbyte(CAN);
- return -2; /* sync error */
-
- start_recv:
- if (trychar == 'C') crc = 1;
- trychar = 0;
- p = xbuff;
- *p++ = c;
- for (i = 0; i < (bufsz+(crc?1:0)+3); ++i) {
- if ((c = _inbyte(DLY_1S)) < 0) goto reject;
- *p++ = c;
- }
-
- if (xbuff[1] == (unsigned char)(~xbuff[2]) &&
- (xbuff[1] == packetno || xbuff[1] == (unsigned char)packetno-1) &&
- check(crc, &xbuff[3], bufsz)) {
- if (xbuff[1] == packetno) {
- register int count = destsz - len;
- if (count > bufsz) count = bufsz;
- if (count > 0) {
- memcpy (&dest[len], &xbuff[3], count);
- len += count;
- }
- ++packetno;
- retrans = MAXRETRANS+1;
- }
- if (--retrans <= 0) {
- flushinput();
- _outbyte(CAN);
- _outbyte(CAN);
- _outbyte(CAN);
- return -3; /* too many retry error */
- }
- _outbyte(ACK);
- continue;
- }
-reject:
- flushinput();
- _outbyte(NAK);
- }
-}