VOID
SlInitDisplay(
VOID
)
/*++
Routine Description:
Clears the screen and does some initialization of global variables based
on the ARC display information.
Arguments:
None
Return Value:
None.
--*/
{
PARC_DISPLAY_STATUS DisplayStatus;
//
// Check to see if this version of the ARC firmware is revision 2 or above.
//
// If not, we default to 80x25
//
if ((SYSTEM_BLOCK->Version > 1) ||
((SYSTEM_BLOCK->Version == 1) && (SYSTEM_BLOCK->Revision >= 2))) {
//
// Additional checks are required on 1.2 firmware, since some
// 1.2 firmware does not implement ArcGetDisplayStatus
//
if ((SYSTEM_BLOCK->FirmwareVectorLength > (ULONG)GetDisplayStatusRoutine*sizeof(PVOID)) &&
(SYSTEM_BLOCK->FirmwareVector[GetDisplayStatusRoutine] != NULL)) {
DisplayStatus = ArcGetDisplayStatus(ARC_CONSOLE_OUTPUT);
ScreenWidth = DisplayStatus->CursorMaxXPosition;
ScreenHeight = DisplayStatus->CursorMaxYPosition;
}
}
SlSetCurrentAttribute(DEFATT);
SlClearDisplay();
}
static void __init sni_display_setup(void)
{
#if defined(CONFIG_VT) && defined(CONFIG_VGA_CONSOLE) && defined(CONFIG_ARC)
struct screen_info *si = &screen_info;
DISPLAY_STATUS *di;
di = ArcGetDisplayStatus(1);
if (di) {
si->orig_x = di->CursorXPosition;
si->orig_y = di->CursorYPosition;
si->orig_video_cols = di->CursorMaxXPosition;
si->orig_video_lines = di->CursorMaxYPosition;
si->orig_video_isVGA = VIDEO_TYPE_VGAC;
si->orig_video_points = 16;
}
#endif
}
