nehalem: Make UMA size configurable in CMOS.

All modes tested on X201.

Change-Id: I23df81523196ea3f5fdb10eb04f4496c00aaeb9f
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/6481
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
diff --git a/src/mainboard/lenovo/x201/cmos.layout b/src/mainboard/lenovo/x201/cmos.layout
index a0670cc..cba457f 100644
--- a/src/mainboard/lenovo/x201/cmos.layout
+++ b/src/mainboard/lenovo/x201/cmos.layout
@@ -97,7 +97,13 @@
 419         1       e       1        power_management_beeps
 420         1       e       1        low_battery_beep
 421         1       e       9        sata_mode
-#422        562     r       0        unused
+
+#422        2       r       0        unused
+
+# coreboot config options: northbridge
+424         3       e       10       gfx_uma_size
+
+#427        557     r       0        unused
 
 # coreboot config options: check sums
 984         16       h       0        check_sum
@@ -138,6 +144,13 @@
 8     1     Primary
 9     0     AHCI
 9     1     Compatible
+10    0     32M
+10    1     48M
+10    2     64M
+10    3     128M
+10    5     96M
+10    6     160M
+
 # -----------------------------------------------------------------
 checksums