Change in libgfxinit[master]: hw-gfx-gma.adb: Fix decoding Stolen Memory on Gen4

[Arthur Heymans (Code Review)]

Arthur Heymans has uploaded this change for review. ( https://review.coreboot.org/21514

Change subject: hw-gfx-gma.adb: Fix decoding Stolen Memory on Gen4
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hw-gfx-gma.adb: Fix decoding Stolen Memory on Gen4

Stolen memory needs to be decoded in MB.

Change-Id: I1ceb9ffd85d6ebb54a0e099e200a5068c34a6251
Signed-off-by: Arthur Heymans 
---
M common/hw-gfx-gma.adb
1 file changed, 3 insertions(+), 3 deletions(-)

git pull ssh://review.coreboot.org:29418/libgfxinit refs/changes/14/21514/1

diff --git a/common/hw-gfx-gma.adb b/common/hw-gfx-gma.adb
index b188f31..9dba073 100644
--- a/common/hw-gfx-gma.adb
+++ b/common/hw-gfx-gma.adb
@@ -507,7 +507,7 @@
      (1, 4, 8, 16, 32, 48, 64, 128, 256, 96, 160, 224, 352);
    function Stolen_Size_Gen4 (GGC : Word16) return Stolen_Size_Range is
      (if GMS_Gen4 (GGC) in Valid_Stolen_Size_Gen4'Range then
-         Valid_Stolen_Size_Gen4 (GMS_Gen4 (GGC)) else 0);
+         Valid_Stolen_Size_Gen4 (GMS_Gen4 (GGC)) * 2 ** 20 else 0);

function GTT_Size_Gen6 (GGC : Word16) return Natural is
      (Natural (Shift_Right (GGC, 8) and 16#03#) * 2 ** 20);
@@ -537,7 +537,7 @@
    is
       GGC_Reg : constant :=
         (case Config.CPU is
-            when G45 | Ironlake                 => 16#52#,
+            when G45 | Ironlake           => 16#52#,
             when Sandybridge .. Skylake   => 16#50#);
       GGC : Word16;
    begin
@@ -575,7 +575,7 @@
          Valid :=
             FB_Last_Page (FB) < GTT_Size / Config.GTT_PTE_Size and
             FB_Last_Page (FB) < Natural (Stolen_Size / GTT_Page_Size) and
-            FB_Last_Page (FB) < Aperture_Size / GTT_Page_Size;
+              FB_Last_Page (FB) < Aperture_Size / GTT_Page_Size;
          pragma Debug (not Valid, Debug.Put
            ("Stolen memory too small to hold framebuffer."));
       end if;