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with HW.GFX;
with HW.GFX.Framebuffer_Filler;
with HW.GFX.GMA;
with HW.GFX.GMA.Display_Probing;
use HW.GFX;
use HW.GFX.GMA;
use HW.GFX.GMA.Display_Probing;
with GMA.Mainboard;
package body GMA
is
fb_valid : boolean := false;
linear_fb_addr : word64;
fb : Framebuffer_Type;
function fill_lb_framebuffer
(framebuffer : in out lb_framebuffer)
return Interfaces.C.int
is
use type word32;
use type Interfaces.C.int;
begin
if fb_valid then
framebuffer :=
(tag => 0,
size => 0,
physical_address => linear_fb_addr,
x_resolution => word32 (fb.Width),
y_resolution => word32 (fb.Height),
bytes_per_line => 4 * word32 (fb.Stride),
bits_per_pixel => 32,
reserved_mask_pos => 24,
reserved_mask_size => 8,
red_mask_pos => 16,
red_mask_size => 8,
green_mask_pos => 8,
green_mask_size => 8,
blue_mask_pos => 0,
blue_mask_size => 8);
return 0;
else
return -1;
end if;
end fill_lb_framebuffer;
----------------------------------------------------------------------------
procedure gfxinit
(mmio_base : in word64;
linear_fb : in word64;
phys_fb : in word32;
lightup_ok : out Interfaces.C.int)
is
use type pos32;
ports : Port_List;
configs : Pipe_Configs;
success : boolean;
min_h : pos16 := pos16'last;
min_v : pos16 := pos16'last;
begin
lightup_ok := 0;
HW.GFX.GMA.Initialize
(MMIO_Base => mmio_base,
Success => success);
if success then
ports := Mainboard.ports;
HW.GFX.GMA.Display_Probing.Scan_Ports (configs, ports);
if configs (Primary).Port /= Disabled then
for i in Pipe_Index loop
exit when configs (i).Port = Disabled;
min_h := pos16'min (min_h, configs (i).Mode.H_Visible);
min_v := pos16'min (min_v, configs (i).Mode.V_Visible);
end loop;
fb :=
(Width => Width_Type (min_h),
Height => Height_Type (min_v),
BPC => 8,
Stride => ((Width_Type (min_h) + 63) / 64) * 64,
Offset => 0);
for i in Pipe_Index loop
exit when configs (i).Port = Disabled;
configs (i).Framebuffer := fb;
end loop;
HW.GFX.GMA.Dump_Configs (configs);
HW.GFX.GMA.Setup_Default_GTT (fb, phys_fb);
HW.GFX.Framebuffer_Filler.Fill (linear_fb, fb);
HW.GFX.GMA.Update_Outputs (configs);
linear_fb_addr := linear_fb;
fb_valid := true;
lightup_ok := 1;
end if;
end if;
end gfxinit;
end GMA;
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