1 files changed, 126 insertions, 0 deletions
diff --git a/src/target/firmware/comm/sercomm_cons.c b/src/target/firmware/comm/sercomm_cons.c
new file mode 100644
index 00000000..fa08b50e
--- /dev/null
+++ b/src/target/firmware/comm/sercomm_cons.c
@@ -0,0 +1,126 @@
+/* Serial console layer, layered on top of sercomm HDLC */
+
+/* (C) 2010 by Harald Welte <laforge@gnumonks.org>
+ *
+ * All Rights Reserved
+ *
+ * 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.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ */
+
+#include <stdint.h>
+#include <errno.h>
+#include <string.h>
+
+#include <calypso/uart.h>
+
+#include <console.h>
+#include <comm/msgb.h>
+#include <comm/sercomm.h>
+#include <comm/sercomm_cons.h>
+
+static struct {
+	struct msgb *cur_msg;
+} scons;
+
+static void raw_puts(const char *s)
+{
+	int i = strlen(s);
+	while (i--)
+		uart_putchar_wait(SERCOMM_UART_NR, *s++);
+}
+
+#ifdef DEBUG
+#define raw_putd(x)	raw_puts(x)
+#else
+#define raw_putd(x)
+#endif
+
+int sercomm_puts(const char *s)
+{
+	const int len = strlen(s) + 1;
+	unsigned int bytes_left = len;
+
+	if (!sercomm_initialized()) {
+		raw_putd("sercomm not initialized: ");
+		raw_puts(s);
+		return len - 1;
+	}
+
+	while (bytes_left > 0) {
+		unsigned int write_num, space_left, flush;
+		uint8_t *data;
+
+		if (!scons.cur_msg)
+			scons.cur_msg = sercomm_alloc_msgb(SERCOMM_CONS_ALLOC);
+
+		if (!scons.cur_msg) {
+			raw_putd("cannot allocate sercomm msgb: ");
+			raw_puts(s);
+			return -ENOMEM;
+		}
+
+		/* space left in the current msgb */
+		space_left = msgb_tailroom(scons.cur_msg);
+
+		if (space_left <= bytes_left) {
+			write_num = space_left;
+			/* flush buffer when it is full */
+			flush = 1;
+		} else {
+			write_num = bytes_left;
+			flush = 0;
+		}
+
+		/* obtain pointer where to copy the data */
+		data = msgb_put(scons.cur_msg, write_num);
+
+		/* copy data while looking for \n line termination */
+		{
+			unsigned int i;
+			for (i = 0; i < write_num; i++) {
+				/* flush buffer at end of line */
+				if (*s == '\n')
+					flush = 1;
+				*data++ = *s++;
+			}
+		}
+		bytes_left -= write_num;
+
+		if (flush) {
+			sercomm_sendmsg(SC_DLCI_CONSOLE, scons.cur_msg);
+			/* reset scons.cur_msg pointer to ensure we allocate
+			 * a new one next round */
+			scons.cur_msg = NULL;
+		}
+	}
+
+	return len - 1;
+}
+
+int sercomm_putchar(int c)
+{
+	char s[2];
+	int rc;
+
+	s[0] = c & 0xff;
+	s[1] = '\0';
+
+	rc = sercomm_puts(s);
+	if (rc < 0)
+		return rc;
+
+	return c;
+}