| Anatolij Gustschin | 29fd7ce | 2010-04-24 19:27:11 +0200 | [diff] [blame^] | 1 | /* |
| 2 | * (C) Copyright 2010 DENX Software Engineering, |
| 3 | * Anatolij Gustschin, agust@denx.de. |
| 4 | * |
| 5 | * See file CREDITS for list of people who contributed to this |
| 6 | * project. |
| 7 | * |
| 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. |
| 12 | * |
| 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. |
| 17 | * |
| 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, |
| 21 | * MA 02111-1307 USA |
| 22 | */ |
| 23 | |
| 24 | /* |
| 25 | * Co-Processor communication POST |
| 26 | */ |
| 27 | #include <common.h> |
| 28 | #include <post.h> |
| 29 | #include <serial.h> |
| 30 | |
| 31 | #if defined(CONFIG_SERIAL_MULTI) |
| 32 | |
| 33 | /* |
| 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". |
| 41 | */ |
| 42 | char alive[] = "$AL;38\r\n"; |
| 43 | char ping[] = "$PI;2C\n"; |
| 44 | |
| 45 | int coprocessor_post_test(int flags) |
| 46 | { |
| 47 | struct stdio_dev *cop_port; |
| 48 | int ret; |
| 49 | char buf[10]; |
| 50 | |
| 51 | /* Test IO Coprocessor communication */ |
| 52 | cop_port = open_port(4, CONFIG_SYS_PDM360NG_COPROC_BAUDRATE); |
| 53 | if (!cop_port) |
| 54 | return -1; |
| 55 | |
| 56 | write_port(cop_port, ping); |
| 57 | udelay(CONFIG_SYS_PDM360NG_COPROC_READ_DELAY); |
| 58 | |
| 59 | memset(buf, 0, sizeof(buf)); |
| 60 | ret = read_port(cop_port, buf, sizeof(buf)); |
| 61 | close_port(4); |
| 62 | if (ret <= 0) { |
| 63 | post_log("Error: Can't read IO Coprocessor port.\n"); |
| 64 | return -1; |
| 65 | } |
| 66 | |
| 67 | if (strcmp(buf, alive)) { |
| 68 | post_log("Error: IO-Cop. resp.: %s\n", buf); |
| 69 | return -1; |
| 70 | } |
| 71 | |
| 72 | /* Test WD Coprocessor communication */ |
| 73 | cop_port = open_port(1, CONFIG_SYS_PDM360NG_COPROC_BAUDRATE); |
| 74 | if (!cop_port) { |
| 75 | post_log("Error: Can't open WD Coprocessor port.\n"); |
| 76 | return -1; |
| 77 | } |
| 78 | |
| 79 | write_port(cop_port, ping); |
| 80 | udelay(CONFIG_SYS_PDM360NG_COPROC_READ_DELAY); |
| 81 | |
| 82 | memset(buf, 0, sizeof(buf)); |
| 83 | ret = read_port(cop_port, buf, sizeof(buf)); |
| 84 | close_port(1); |
| 85 | if (ret <= 0) { |
| 86 | post_log("Error: Can't read WD Coprocessor port.\n"); |
| 87 | return -1; |
| 88 | } |
| 89 | |
| 90 | if (strcmp(buf, alive)) { |
| 91 | post_log("Error: WD-Cop. resp.: %s\n", buf); |
| 92 | return -1; |
| 93 | } |
| 94 | |
| 95 | return 0; |
| 96 | } |
| 97 | #endif /* CONFIG_SERIAL_MULTI */ |