When attaching framebuffer to "/chosen/stdout" node fails, try attaching

to "screen" node directly. The problem is that by default OF on some (all?)
Macs either doesn't provide "/chosen/stdout" or redirects it somewhere,
unless you boot in manual mode via CMD-ALT-O-F. It's nice to see normal
FreeBSD boot output instead of blank gray screen.

1 files changed, 10 insertions, 2 deletions

diff --git a/sys/powerpc/ofw/ofw_syscons.c b/sys/powerpc/ofw/ofw_syscons.c
index 1296ea6..d93c5bc 100644
--- a/sys/powerpc/ofw/ofw_syscons.c
+++ b/sys/powerpc/ofw/ofw_syscons.c
@@ -235,8 +235,16 @@ ofwfb_configure(int flags)
 	OF_getprop(chosen, "stdout", &stdout, sizeof(stdout));
         node = OF_instance_to_package(stdout);
         OF_getprop(node, "device_type", type, sizeof(type));
-        if (strcmp(type, "display") != 0)
-                return (0);
+        if (strcmp(type, "display") != 0) {
+		/*
+		 * Attaching to "/chosen/stdout" has failed, try
+		 * using "screen" directly.
+		 */
+		node = OF_finddevice("screen");
+		OF_getprop(node, "device_type", type, sizeof(type));
+		if (strcmp(type, "display") != 0)
+			return (0);
+	}
 
 	/* Only support 8 and 32-bit framebuffers */
 	OF_getprop(node, "depth", &depth, sizeof(depth));