[23/27,v9] xen/arm: vpl011: Add a new vuart console type to xenconsole client

Commit Message

Bhupinder Thakur Sept. 18, 2017, 10:32 a.m. UTC

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

Signed-off-by: Bhupinder Thakur <[e-mail]>
Reviewed-by: Stefano Stabellini <[e-mail]>
Acked-by: Wei Liu <[e-mail]>
---
CC: Ian Jackson <[e-mail]>
CC: Wei Liu <[e-mail]>
CC: Stefano Stabellini <[e-mail]>
CC: Julien Grall <[e-mail]>

Changes since v4:
- Removed the vuart compile time flag so that vuart code is compiled always.

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/client/main.c | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

Patch

diff --git a/tools/console/client/main.c b/tools/console/client/main.c
index c340cb7..f92ad3d 100644
--- a/tools/console/client/main.c
+++ b/tools/console/client/main.c
@@ -76,7 +76,7 @@  static void usage(const char *program) {
 	       "\n"
 	       "  -h, --help       display this help and exit\n"
 	       "  -n, --num N      use console number N\n"
-	       "  --type TYPE      console type. must be 'pv' or 'serial'\n"
+	       "  --type TYPE      console type. must be 'pv', 'serial' or 'vuart'\n"
 	       "  --start-notify-fd N file descriptor used to notify parent\n"
 	       , program);
 }
@@ -264,6 +264,7 @@  typedef enum {
        CONSOLE_INVAL,
        CONSOLE_PV,
        CONSOLE_SERIAL,
+       CONSOLE_VUART,
 } console_type;
 
 static struct termios stdin_old_attr;
@@ -344,6 +345,7 @@  int main(int argc, char **argv)
 	char *end;
 	console_type type = CONSOLE_INVAL;
 	bool interactive = 0;
+	char *console_names = "serial, pv, vuart";
 
 	while((ch = getopt_long(argc, argv, sopt, lopt, &opt_ind)) != -1) {
 		switch(ch) {
@@ -359,9 +361,12 @@  int main(int argc, char **argv)
 				type = CONSOLE_SERIAL;
 			else if (!strcmp(optarg, "pv"))
 				type = CONSOLE_PV;
+			else if (!strcmp(optarg, "vuart"))
+				type = CONSOLE_VUART;
 			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;
@@ -437,6 +442,10 @@  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);
 	}
+	if (type == CONSOLE_VUART) {
+		snprintf(path, strlen(dom_path) + strlen("/vuart/0/tty") + 1,
+			 "%s/vuart/0/tty", dom_path);
+	}
 
 	/* 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