SYS_CFG_DVIMODE allows the guest to select whether the
output DVI signal is VGA, SVGA, XGA, SGA or UXGA. Since
this makes no difference to QEMU, implement writes as a
no-op so Linux doesn't complain.
Signed-off-by: Peter Maydell <peter.mayd...@linaro.org>
---
hw/arm_sysctl.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/hw/arm_sysctl.c b/hw/arm_sysctl.c
index 960b664..bb56238 100644
--- a/hw/arm_sysctl.c
+++ b/hw/arm_sysctl.c
@@ -295,6 +295,14 @@ static bool vexpress_cfgctrl_write(arm_sysctl_state *s,
unsigned int dcc,
return true;
}
break;
+ case SYS_CFG_DVIMODE:
+ if (site == SYS_CFG_SITE_MB && device == 0) {
+ /* Selecting DVI mode is meaningless for QEMU: we will
+ * always display the output correctly according to the
+ * pixel height/width programmed into the CLCD controller.
+ */
+ return true;
+ }
default:
break;
}
--
1.7.9.5
