| Jean-Christophe PLAGNIOL-VILLARD | 55e0ed6 | 2009-04-25 14:57:52 +0200 | [diff] [blame] | 1 | /* |
| 2 | * (C) Copyright 2002-2009 |
| 3 | * Wolfgang Denk, DENX Software Engineering, wd@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 | #include <common.h> |
| 25 | |
| 26 | /* 'inline' - We have to do it fast */ |
| 27 | static inline void mdm_readline(char *buf, int bufsiz) |
| 28 | { |
| 29 | char c; |
| 30 | char *p; |
| 31 | int n; |
| 32 | |
| 33 | n = 0; |
| 34 | p = buf; |
| 35 | for(;;) { |
| 36 | c = serial_getc(); |
| 37 | |
| 38 | /* dbg("(%c)", c); */ |
| 39 | |
| 40 | switch(c) { |
| 41 | case '\r': |
| 42 | break; |
| 43 | case '\n': |
| 44 | *p = '\0'; |
| 45 | return; |
| 46 | |
| 47 | default: |
| 48 | if(n++ > bufsiz) { |
| 49 | *p = '\0'; |
| 50 | return; /* sanity check */ |
| 51 | } |
| 52 | *p = c; |
| 53 | p++; |
| 54 | break; |
| 55 | } |
| 56 | } |
| 57 | } |
| 58 | |
| 59 | extern void dbg(const char *fmt, ...); |
| 60 | int mdm_init (void) |
| 61 | { |
| 62 | char env_str[16]; |
| 63 | char *init_str; |
| 64 | int i; |
| 65 | extern char console_buffer[]; |
| 66 | extern void enable_putc(void); |
| 67 | extern int hwflow_onoff(int); |
| 68 | |
| 69 | enable_putc(); /* enable serial_putc() */ |
| 70 | |
| 71 | #ifdef CONFIG_HWFLOW |
| 72 | init_str = getenv("mdm_flow_control"); |
| 73 | if (init_str && (strcmp(init_str, "rts/cts") == 0)) |
| 74 | hwflow_onoff (1); |
| 75 | else |
| 76 | hwflow_onoff(-1); |
| 77 | #endif |
| 78 | |
| 79 | for (i = 1;;i++) { |
| 80 | sprintf(env_str, "mdm_init%d", i); |
| 81 | if ((init_str = getenv(env_str)) != NULL) { |
| 82 | serial_puts(init_str); |
| 83 | serial_puts("\n"); |
| 84 | for(;;) { |
| 85 | mdm_readline(console_buffer, CONFIG_SYS_CBSIZE); |
| 86 | dbg("ini%d: [%s]", i, console_buffer); |
| 87 | |
| 88 | if ((strcmp(console_buffer, "OK") == 0) || |
| 89 | (strcmp(console_buffer, "ERROR") == 0)) { |
| 90 | dbg("ini%d: cmd done", i); |
| 91 | break; |
| 92 | } else /* in case we are originating call ... */ |
| 93 | if (strncmp(console_buffer, "CONNECT", 7) == 0) { |
| 94 | dbg("ini%d: connect", i); |
| 95 | return 0; |
| 96 | } |
| 97 | } |
| 98 | } else |
| 99 | break; /* no init string - stop modem init */ |
| 100 | |
| 101 | udelay(100000); |
| 102 | } |
| 103 | |
| 104 | udelay(100000); |
| 105 | |
| 106 | /* final stage - wait for connect */ |
| 107 | for(;i > 1;) { /* if 'i' > 1 - wait for connection |
| 108 | message from modem */ |
| 109 | mdm_readline(console_buffer, CONFIG_SYS_CBSIZE); |
| 110 | dbg("ini_f: [%s]", console_buffer); |
| 111 | if (strncmp(console_buffer, "CONNECT", 7) == 0) { |
| 112 | dbg("ini_f: connected"); |
| 113 | return 0; |
| 114 | } |
| 115 | } |
| 116 | |
| 117 | return 0; |
| 118 | } |