1 files changed, 118 insertions, 0 deletions
diff --git a/common/modem.c b/common/modem.c
new file mode 100644
index 0000000..a017b29
--- /dev/null
+++ b/common/modem.c
@@ -0,0 +1,118 @@
+/*
+ * (C) Copyright 2002-2009
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+
+/* 'inline' - We have to do it fast */
+static inline void mdm_readline(char *buf, int bufsiz)
+{
+	char c;
+	char *p;
+	int n;
+
+	n = 0;
+	p = buf;
+	for(;;) {
+		c = serial_getc();
+
+		/*		dbg("(%c)", c); */
+
+		switch(c) {
+		case '\r':
+			break;
+		case '\n':
+			*p = '\0';
+			return;
+
+		default:
+			if(n++ > bufsiz) {
+				*p = '\0';
+				return; /* sanity check */
+			}
+			*p = c;
+			p++;
+			break;
+		}
+	}
+}
+
+extern void  dbg(const char *fmt, ...);
+int mdm_init (void)
+{
+	char env_str[16];
+	char *init_str;
+	int i;
+	extern char console_buffer[];
+	extern void enable_putc(void);
+	extern int hwflow_onoff(int);
+
+	enable_putc(); /* enable serial_putc() */
+
+#ifdef CONFIG_HWFLOW
+	init_str = getenv("mdm_flow_control");
+	if (init_str && (strcmp(init_str, "rts/cts") == 0))
+		hwflow_onoff (1);
+	else
+		hwflow_onoff(-1);
+#endif
+
+	for (i = 1;;i++) {
+		sprintf(env_str, "mdm_init%d", i);
+		if ((init_str = getenv(env_str)) != NULL) {
+			serial_puts(init_str);
+			serial_puts("\n");
+			for(;;) {
+				mdm_readline(console_buffer, CONFIG_SYS_CBSIZE);
+				dbg("ini%d: [%s]", i, console_buffer);
+
+				if ((strcmp(console_buffer, "OK") == 0) ||
+					(strcmp(console_buffer, "ERROR") == 0)) {
+					dbg("ini%d: cmd done", i);
+					break;
+				} else /* in case we are originating call ... */
+					if (strncmp(console_buffer, "CONNECT", 7) == 0) {
+						dbg("ini%d: connect", i);
+						return 0;
+					}
+			}
+		} else
+			break; /* no init string - stop modem init */
+
+		udelay(100000);
+	}
+
+	udelay(100000);
+
+	/* final stage - wait for connect */
+	for(;i > 1;) { /* if 'i' > 1 - wait for connection
+				  message from modem */
+		mdm_readline(console_buffer, CONFIG_SYS_CBSIZE);
+		dbg("ini_f: [%s]", console_buffer);
+		if (strncmp(console_buffer, "CONNECT", 7) == 0) {
+			dbg("ini_f: connected");
+			return 0;
+		}
+	}
+
+	return 0;
+}