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-rw-r--r--hw/display/macfb.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/hw/display/macfb.c b/hw/display/macfb.c
index 7371986480..2f8e016566 100644
--- a/hw/display/macfb.c
+++ b/hw/display/macfb.c
@@ -655,6 +655,14 @@ static bool macfb_common_realize(DeviceState *dev, MacfbState *s, Error **errp)
         return false;
     }
 
+    /*
+     * Set mode control registers to match the mode found above so that
+     * macfb_mode_write() does the right thing if no MacOS toolbox ROM
+     * is present to initialise them
+     */
+    s->regs[DAFB_MODE_CTRL1 >> 2] = s->mode->mode_ctrl1;
+    s->regs[DAFB_MODE_CTRL2 >> 2] = s->mode->mode_ctrl2;
+
     s->con = graphic_console_init(dev, 0, &macfb_ops, s);
     surface = qemu_console_surface(s->con);