[MIPS] IP22: Fix serial console detection

From: Kaj-Michael Lang <milang@tal.org>

In ip22-setup.c the checks for serial/graphics console logic does
not check if ARCS console=g but the machine is using serial console, as
it does if no keyboard is attached.

This patch adds a check if ConsoleOut is serial. There might also be
support for other graphics than Newport soon...

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

diff --git a/arch/mips/sgi-ip22/ip22-setup.c b/arch/mips/sgi-ip22/ip22-setup.c
index 5e59b4c..7018e18 100644 (file)
--- a/arch/mips/sgi-ip22/ip22-setup.c
+++ b/arch/mips/sgi-ip22/ip22-setup.c
@@ -56,6 +56,7 @@ extern void ip22_time_init(void) __init;
 void __init plat_setup(void)
 {
        char *ctype;
+       char *cserial;
 
        board_be_init = ip22_be_init;
        ip22_time_init();
@@ -81,9 +82,14 @@ void __init plat_setup(void)
        /* ARCS console environment variable is set to "g?" for
         * graphics console, it is set to "d" for the first serial
         * line and "d2" for the second serial line.
+        *
+        * Need to check if the case is 'g' but no keyboard:
+        * (ConsoleIn/Out = serial)
         */
        ctype = ArcGetEnvironmentVariable("console");
-       if (ctype && *ctype == 'd') {
+       cserial = ArcGetEnvironmentVariable("ConsoleOut");
+
+       if ((ctype && *ctype == 'd') || (cserial && *cserial == 's')) {
                static char options[8];
                char *baud = ArcGetEnvironmentVariable("dbaud");
                if (baud)
@@ -91,7 +97,7 @@ void __init plat_setup(void)
                add_preferred_console("ttyS", *(ctype + 1) == '2' ? 1 : 0,
                                      baud ? options : NULL);
        } else if (!ctype || *ctype != 'g') {
-               /* Use ARC if we don't want serial ('d') or Newport ('g'). */
+               /* Use ARC if we don't want serial ('d') or graphics ('g'). */
                prom_flags |= PROM_FLAG_USE_AS_CONSOLE;
                add_preferred_console("arc", 0, NULL);
        }