[PATCH 12/14 v4] xen/arm: vpl011: Add a new vuart console type to xenconsole client

[Bhupinder Thakur <bhupinder.thakur@linaro.org>]

Add a new console type VUART to connect to guest's emualated vuart
console.

Signed-off-by: Bhupinder Thakur <bhupinder.thakur@linaro.org>
---
CC: ij
CC: wl
CC: ss
CC: jg

Changes since v3:
- The vuart console support is under CONFIG_VUART_CONSOLE option.
- Since there is a change from last review, I have not included
  reviewed-by tag from Stefano and acked-by tag from Wei.

 tools/console/Makefile      |  1 +
 tools/console/client/main.c | 25 ++++++++++++++++++++++++-
 2 files changed, 25 insertions(+), 1 deletion(-)

diff --git a/tools/console/Makefile b/tools/console/Makefile
index fcee313..49c02d4 100644
--- a/tools/console/Makefile
+++ b/tools/console/Makefile
@@ -34,6 +34,7 @@ xenconsoled: $(patsubst %.c,%.o,$(wildcard daemon/*.c))
 	$(CC) $(LDFLAGS) $^ -o $@ $(LDLIBS) $(LDLIBS_libxenevtchn) $(LDLIBS_libxengnttab) $(LDLIBS_xenconsoled) $(APPEND_LDFLAGS)
 
 client/main.o: client/_paths.h
+client/main.o: CFLAGS += $(VUART_CFLAGS-y)
 xenconsole: $(patsubst %.c,%.o,$(wildcard client/*.c))
 	$(CC) $(LDFLAGS) $^ -o $@ $(LDLIBS) $(LDLIBS_xenconsole) $(APPEND_LDFLAGS)
 
diff --git a/tools/console/client/main.c b/tools/console/client/main.c
index 977779f..8d31fe9 100644
--- a/tools/console/client/main.c
+++ b/tools/console/client/main.c
@@ -76,7 +76,11 @@ static void usage(const char *program) {
 	       "\n"
 	       "  -h, --help       display this help and exit\n"
 	       "  -n, --num N      use console number N\n"
+#ifdef CONFIG_VUART_CONSOLE
+	       "  --type TYPE      console type. must be 'pv', 'serial' or 'vuart'\n"
+#else
 	       "  --type TYPE      console type. must be 'pv' or 'serial'\n"
+#endif
 	       "  --start-notify-fd N file descriptor used to notify parent\n"
 	       , program);
 }
@@ -264,6 +268,9 @@ typedef enum {
        CONSOLE_INVAL,
        CONSOLE_PV,
        CONSOLE_SERIAL,
+#ifdef CONFIG_VUART_CONSOLE
+       CONSOLE_VUART,
+#endif
 } console_type;
 
 static struct termios stdin_old_attr;
@@ -343,6 +350,11 @@ int main(int argc, char **argv)
 	char *end;
 	console_type type = CONSOLE_INVAL;
 	bool interactive = 0;
+#ifdef CONFIG_VUART_CONSOLE
+	char *console_names = "serial, pv, vuart";
+#else
+	char *console_names = "serial, pv";
+#endif
 
 	if (isatty(STDIN_FILENO) && isatty(STDOUT_FILENO))
 		interactive = 1;
@@ -361,9 +373,14 @@ int main(int argc, char **argv)
 				type = CONSOLE_SERIAL;
 			else if (!strcmp(optarg, "pv"))
 				type = CONSOLE_PV;
+#ifdef CONFIG_VUART_CONSOLE
+			else if (!strcmp(optarg, "vuart"))
+				type = CONSOLE_VUART;
+#endif
 			else {
 				fprintf(stderr, "Invalid type argument\n");
-				fprintf(stderr, "Console types supported are: serial, pv\n");
+				fprintf(stderr, "Console types supported are: %s\n",
+                        console_names);
 				exit(EINVAL);
 			}
 			break;
@@ -436,6 +453,12 @@ int main(int argc, char **argv)
 		else
 			snprintf(path, strlen(dom_path) + strlen("/device/console/%d/tty") + 5, "%s/device/console/%d/tty", dom_path, num);
 	}
+#ifdef CONFIG_VUART_CONSOLE
+	if (type == CONSOLE_VUART) {
+		snprintf(path, strlen(dom_path) + strlen("/vuart/0/tty") + 1,
+				 "%s/vuart/0/tty", dom_path);
+	}
+#endif
 
 	/* FIXME consoled currently does not assume domain-0 doesn't have a
 	   console which is good when we break domain-0 up.  To keep us
-- 
2.7.4


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