2 * (C) Copyright 2010 DENX Software Engineering,
3 * Anatolij Gustschin, agust@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 * Co-Processor communication POST
31 #if defined(CONFIG_SERIAL_MULTI)
34 * Actually the termination sequence of the coprocessor
35 * commands is "\r\n" (CR LF), but here we use a side effect of
36 * the putc() routine of the serial driver which checks for LF
37 * and sends CR before sending LF. Therefore the termination
38 * sequence in the command below is only "\n".
39 * "alive" string is the coprocessor response for ping command
40 * and not a command, therefore it is terminated with "\r\n".
42 char alive[] = "$AL;38\r\n";
43 char ping[] = "$PI;2C\n";
45 int coprocessor_post_test(int flags)
47 struct stdio_dev *cop_port;
51 /* Test IO Coprocessor communication */
52 cop_port = open_port(4, CONFIG_SYS_PDM360NG_COPROC_BAUDRATE);
56 write_port(cop_port, ping);
57 udelay(CONFIG_SYS_PDM360NG_COPROC_READ_DELAY);
59 memset(buf, 0, sizeof(buf));
60 ret = read_port(cop_port, buf, sizeof(buf));
63 post_log("Error: Can't read IO Coprocessor port.\n");
67 if (strcmp(buf, alive)) {
68 post_log("Error: IO-Cop. resp.: %s\n", buf);
72 /* Test WD Coprocessor communication */
73 cop_port = open_port(1, CONFIG_SYS_PDM360NG_COPROC_BAUDRATE);
75 post_log("Error: Can't open WD Coprocessor port.\n");
79 write_port(cop_port, ping);
80 udelay(CONFIG_SYS_PDM360NG_COPROC_READ_DELAY);
82 memset(buf, 0, sizeof(buf));
83 ret = read_port(cop_port, buf, sizeof(buf));
86 post_log("Error: Can't read WD Coprocessor port.\n");
90 if (strcmp(buf, alive)) {
91 post_log("Error: WD-Cop. resp.: %s\n", buf);
97 #endif /* CONFIG_SERIAL_MULTI */