hw/arm_sysctl: Implement SYS_CFG_DVIMODE as a no-op

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.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2013-03-15 16:41:56 +00:00
parent 8ff05c9842
commit 291155cbc5

View File

@ -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;
}