gm45: 256M default vram

352M vram seems to be quite unstable on targets with
4GB or more. 256M has yet to show issues on different
ram configurations. This might be a good default for libreboot.

12 files changed, 214 insertions, 0 deletions

diff --git a/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/r400_16mb/reused.list b/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/r400_16mb/reused.list
index f5512da..44a4e3c 100644
--- a/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/r400_16mb/reused.list
+++ b/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/r400_16mb/reused.list
@@ -1,3 +1,4 @@
 /resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/x60/0001-NOTFORMERGE-ec-lenovo-h8-wlan-trackpoint-touchpad-bl.patch
 /resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/t400_8mb/0002-NOTFORMERGE-lenovo-t400-hard-code-enable-integrated-.patch
 /resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/x200_8mb/0001-add-acpi-c3-cpu-c4-state-for-gm45-thinpads.patch
+/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/x200_8mb/0001-gm45-enable-setting-all-vram-sizes-from-cmos.patch
diff --git a/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/r400_4mb/reused.list b/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/r400_4mb/reused.list
index f5512da..44a4e3c 100644
--- a/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/r400_4mb/reused.list
+++ b/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/r400_4mb/reused.list
@@ -1,3 +1,4 @@
 /resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/x60/0001-NOTFORMERGE-ec-lenovo-h8-wlan-trackpoint-touchpad-bl.patch
 /resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/t400_8mb/0002-NOTFORMERGE-lenovo-t400-hard-code-enable-integrated-.patch
 /resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/x200_8mb/0001-add-acpi-c3-cpu-c4-state-for-gm45-thinpads.patch
+/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/x200_8mb/0001-gm45-enable-setting-all-vram-sizes-from-cmos.patch
diff --git a/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/r400_8mb/reused.list b/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/r400_8mb/reused.list
index f5512da..44a4e3c 100644
--- a/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/r400_8mb/reused.list
+++ b/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/r400_8mb/reused.list
@@ -1,3 +1,4 @@
 /resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/x60/0001-NOTFORMERGE-ec-lenovo-h8-wlan-trackpoint-touchpad-bl.patch
 /resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/t400_8mb/0002-NOTFORMERGE-lenovo-t400-hard-code-enable-integrated-.patch
 /resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/x200_8mb/0001-add-acpi-c3-cpu-c4-state-for-gm45-thinpads.patch
+/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/x200_8mb/0001-gm45-enable-setting-all-vram-sizes-from-cmos.patch
diff --git a/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/t400_16mb/reused.list b/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/t400_16mb/reused.list
index 1d98272..69f7ff4 100644
--- a/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/t400_16mb/reused.list
+++ b/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/t400_16mb/reused.list
@@ -1,2 +1,3 @@
 /resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/x60/0001-NOTFORMERGE-ec-lenovo-h8-wlan-trackpoint-touchpad-bl.patch
 /resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/x200_8mb/0001-add-acpi-c3-cpu-c4-state-for-gm45-thinpads.patch
+/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/x200_8mb/0001-gm45-enable-setting-all-vram-sizes-from-cmos.patch
diff --git a/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/t400_4mb/reused.list b/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/t400_4mb/reused.list
index f5512da..44a4e3c 100644
--- a/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/t400_4mb/reused.list
+++ b/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/t400_4mb/reused.list
@@ -1,3 +1,4 @@
 /resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/x60/0001-NOTFORMERGE-ec-lenovo-h8-wlan-trackpoint-touchpad-bl.patch
 /resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/t400_8mb/0002-NOTFORMERGE-lenovo-t400-hard-code-enable-integrated-.patch
 /resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/x200_8mb/0001-add-acpi-c3-cpu-c4-state-for-gm45-thinpads.patch
+/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/x200_8mb/0001-gm45-enable-setting-all-vram-sizes-from-cmos.patch
diff --git a/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/t400_8mb/reused.list b/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/t400_8mb/reused.list
index 1d98272..69f7ff4 100644
--- a/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/t400_8mb/reused.list
+++ b/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/t400_8mb/reused.list
@@ -1,2 +1,3 @@
 /resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/x60/0001-NOTFORMERGE-ec-lenovo-h8-wlan-trackpoint-touchpad-bl.patch
 /resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/x200_8mb/0001-add-acpi-c3-cpu-c4-state-for-gm45-thinpads.patch
+/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/x200_8mb/0001-gm45-enable-setting-all-vram-sizes-from-cmos.patch
diff --git a/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/t500_16mb/reused.list b/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/t500_16mb/reused.list
index f5512da..44a4e3c 100644
--- a/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/t500_16mb/reused.list
+++ b/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/t500_16mb/reused.list
@@ -1,3 +1,4 @@
 /resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/x60/0001-NOTFORMERGE-ec-lenovo-h8-wlan-trackpoint-touchpad-bl.patch
 /resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/t400_8mb/0002-NOTFORMERGE-lenovo-t400-hard-code-enable-integrated-.patch
 /resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/x200_8mb/0001-add-acpi-c3-cpu-c4-state-for-gm45-thinpads.patch
+/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/x200_8mb/0001-gm45-enable-setting-all-vram-sizes-from-cmos.patch
diff --git a/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/t500_4mb/reused.list b/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/t500_4mb/reused.list
index f5512da..44a4e3c 100644
--- a/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/t500_4mb/reused.list
+++ b/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/t500_4mb/reused.list
@@ -1,3 +1,4 @@
 /resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/x60/0001-NOTFORMERGE-ec-lenovo-h8-wlan-trackpoint-touchpad-bl.patch
 /resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/t400_8mb/0002-NOTFORMERGE-lenovo-t400-hard-code-enable-integrated-.patch
 /resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/x200_8mb/0001-add-acpi-c3-cpu-c4-state-for-gm45-thinpads.patch
+/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/x200_8mb/0001-gm45-enable-setting-all-vram-sizes-from-cmos.patch
diff --git a/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/t500_8mb/reused.list b/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/t500_8mb/reused.list
index f5512da..44a4e3c 100644
--- a/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/t500_8mb/reused.list
+++ b/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/t500_8mb/reused.list
@@ -1,3 +1,4 @@
 /resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/x60/0001-NOTFORMERGE-ec-lenovo-h8-wlan-trackpoint-touchpad-bl.patch
 /resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/t400_8mb/0002-NOTFORMERGE-lenovo-t400-hard-code-enable-integrated-.patch
 /resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/x200_8mb/0001-add-acpi-c3-cpu-c4-state-for-gm45-thinpads.patch
+/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/x200_8mb/0001-gm45-enable-setting-all-vram-sizes-from-cmos.patch
diff --git a/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/x200_16mb/reused.list b/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/x200_16mb/reused.list
index 1d98272..69f7ff4 100644
--- a/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/x200_16mb/reused.list
+++ b/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/x200_16mb/reused.list
@@ -1,2 +1,3 @@
 /resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/x60/0001-NOTFORMERGE-ec-lenovo-h8-wlan-trackpoint-touchpad-bl.patch
 /resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/x200_8mb/0001-add-acpi-c3-cpu-c4-state-for-gm45-thinpads.patch
+/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/x200_8mb/0001-gm45-enable-setting-all-vram-sizes-from-cmos.patch
diff --git a/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/x200_4mb/reused.list b/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/x200_4mb/reused.list
index 1d98272..69f7ff4 100644
--- a/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/x200_4mb/reused.list
+++ b/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/x200_4mb/reused.list
@@ -1,2 +1,3 @@
 /resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/x60/0001-NOTFORMERGE-ec-lenovo-h8-wlan-trackpoint-touchpad-bl.patch
 /resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/x200_8mb/0001-add-acpi-c3-cpu-c4-state-for-gm45-thinpads.patch
+/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/x200_8mb/0001-gm45-enable-setting-all-vram-sizes-from-cmos.patch
diff --git a/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/x200_8mb/0001-gm45-enable-setting-all-vram-sizes-from-cmos.patch b/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/x200_8mb/0001-gm45-enable-setting-all-vram-sizes-from-cmos.patch
new file mode 100644
index 0000000..7ff09f3
--- /dev/null
+++ b/resources/libreboot/patch/coreboot/2a3434757ef425dbdfedf1fc69e1a033a6e7310d/grub/x200_8mb/0001-gm45-enable-setting-all-vram-sizes-from-cmos.patch
@@ -0,0 +1,203 @@
+From 35db725ce978d57975b716ce6590caff9494a4fc Mon Sep 17 00:00:00 2001
+From: Arthur Heymans <arthur@aheymans.xyz>
+Date: Thu, 19 May 2016 15:34:49 +0200
+Subject: [PATCH] gm45: enable setting all vram sizes from cmos
+
+Setting the size of the preallocated memory for the igd is done
+using a cmos parameter, gfx_uma_size. This was limited to a subset of
+all available sizes, that were already implemented elsewhere
+in the northbridge code.
+
+What this does is change the cmos parameter to 4 bits instead
+of 3 bits to accomodate all vram sizes.
+The northbridge code that reads this cmos parameter is
+also changed for this new cmos settings.
+
+352M is disabled since it often causes issues with 4GB or
+more RAM.
+
+TEST: Build, flash target. Clear cmos by corrupting
+the checksum (nvramtool -c something).
+Set a desired value in gfx_uma_size using nvramtool.
+"dmesg | grep stolen" to see what is actually allocated.
+
+Change-Id: Ia6479d03f1abe6d0c94bd7264365505e8f8eaeec
+Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
+
+diff --git a/src/mainboard/lenovo/t400/cmos.default b/src/mainboard/lenovo/t400/cmos.default
+index 98ce970..90d796f 100644
+--- a/src/mainboard/lenovo/t400/cmos.default
++++ b/src/mainboard/lenovo/t400/cmos.default
+@@ -13,4 +13,5 @@ sticky_fn=Disable
+ power_management_beeps=Enable
+ low_battery_beep=Enable
+ sata_mode=AHCI
+-hybrid_graphics_mode=Integrated Only
+\ No newline at end of file
++hybrid_graphics_mode=Integrated Only
++gfx_uma_size=256M
+\ No newline at end of file
+diff --git a/src/mainboard/lenovo/t400/cmos.layout b/src/mainboard/lenovo/t400/cmos.layout
+index 8e642f8..e997ed5 100644
+--- a/src/mainboard/lenovo/t400/cmos.layout
++++ b/src/mainboard/lenovo/t400/cmos.layout
+@@ -76,12 +76,11 @@ entries
+ 939         1       e       1        low_battery_beep
+ 940         1       e       1        uwb
+ 
+-# coreboot config options: northbridge
+-941         3       e       11       gfx_uma_size
+-
+ # coreboot config options: graphics
+ 944         2       e       12       hybrid_graphics_mode
+-#946        6       r       0        unused
++
++# coreboot config options: northbridge
++946         4       e       11       gfx_uma_size
+ 
+ # coreboot config options: EC
+ 952         8       h       0        volume
+@@ -130,12 +129,18 @@ enumerations
+ 9     1     Primary
+ 10    0     AHCI
+ 10    1     Compatible
+-11    0     32M
+-11    1     48M
+-11    2     64M
+-11    3     128M
+-11    5     96M
+-11    6     160M
++11    0     1M
++11    1     4M
++11    2     8M
++11    3     16M
++11    4     32M
++11    5     48M
++11    6     64M
++11    7     128M
++11    8     256M
++11    9     96M
++11    10     160M
++11    11     224M
+ 12    0     Integrated Only
+ 12    1     Discrete Only
+ 12    2     Switchable
+diff --git a/src/mainboard/lenovo/x200/cmos.default b/src/mainboard/lenovo/x200/cmos.default
+index ac9f96d..ec7ab46 100644
+--- a/src/mainboard/lenovo/x200/cmos.default
++++ b/src/mainboard/lenovo/x200/cmos.default
+@@ -13,3 +13,4 @@ sticky_fn=Disable
+ power_management_beeps=Enable
+ low_battery_beep=Enable
+ sata_mode=AHCI
++gfx_uma_size=256M
+\ No newline at end of file
+diff --git a/src/mainboard/lenovo/x200/cmos.layout b/src/mainboard/lenovo/x200/cmos.layout
+index 931cb4a..a964600 100644
+--- a/src/mainboard/lenovo/x200/cmos.layout
++++ b/src/mainboard/lenovo/x200/cmos.layout
+@@ -77,10 +77,10 @@ entries
+ 940         1       e       1        uwb
+ 
+ # coreboot config options: northbridge
+-941         3       e       11       gfx_uma_size
+-
+ 944         8       h       0        volume
+ 
++952	    4	    e	    11	     gfx_uma_size
++
+ # coreboot config options: check sums
+ 984          16       h       0        check_sum
+ #1000        24       r       0        unused
+@@ -125,12 +125,18 @@ enumerations
+ 9     1     Primary
+ 10    0     AHCI
+ 10    1     Compatible
+-11    0     32M
+-11    1     48M
+-11    2     64M
+-11    3     128M
+-11    5     96M
+-11    6     160M
++11    0     1M
++11    1     4M
++11    2     8M
++11    3     16M
++11    4     32M
++11    5     48M
++11    6     64M
++11    7     128M
++11    8     256M
++11    9     96M
++11    10    160M
++11    11    224M
+ 
+ # -----------------------------------------------------------------
+ checksums
+diff --git a/src/mainboard/roda/rk9/cmos.layout b/src/mainboard/roda/rk9/cmos.layout
+index f567b97..74fef63 100644
+--- a/src/mainboard/roda/rk9/cmos.layout
++++ b/src/mainboard/roda/rk9/cmos.layout
+@@ -70,9 +70,9 @@ entries
+ 984          16       h       0        check_sum
+ 
+ # coreboot config options: northbridge
+-1000         3       e       10       gfx_uma_size
++1000         4       e       10       gfx_uma_size
+ 
+-#1003        21       r       0        unused
++#1004        20       r       0        unused
+ 
+ # ram initialization internal data
+ 1024        128       r       0        read_training_results
+@@ -112,13 +112,19 @@ enumerations
+ 8     1     Yes
+ 9     0     AHCI
+ 9     1     Compatible
+-10    0     32M
+-10    1     48M
+-10    2     64M
+-10    3     128M
+-10    5     96M
+-10    6     160M
+-
++11    0     1M
++11    1     4M
++11    2     8M
++11    3     16M
++11    4     32M
++11    5     48M
++11    6     64M
++11    7     128M
++11    8     256M
++11    9     96M
++11    10     160M
++11    11     224M
++11    12     352M
+ # -----------------------------------------------------------------
+ checksums
+ 
+diff --git a/src/northbridge/intel/gm45/igd.c b/src/northbridge/intel/gm45/igd.c
+index 7e7bbbe..c56ecbe 100644
+--- a/src/northbridge/intel/gm45/igd.c
++++ b/src/northbridge/intel/gm45/igd.c
+@@ -153,10 +153,13 @@ void igd_compute_ggc(sysinfo_t *const sysinfo)
+ 		/* Graphics Stolen Memory: 2MB GTT (0x0300) when VT-d disabled,
+ 		   2MB GTT + 2MB shadow GTT (0x0b00) else. */
+ 		if (get_option(&gfxsize, "gfx_uma_size") != CB_SUCCESS) {
+-			/* 0 for 32MB */
+-			gfxsize = 0;
++			/* 4 for 32MB, default if not set in cmos,
++			 8 for libreboot default of 256M*/
++			gfxsize = 8;
+ 		}
+-		sysinfo->ggc = 0x0300 | ((gfxsize + 5) << 4);
++		if (gfxsize > 11)
++			gfxsize = 8;
++		sysinfo->ggc = 0x0300 | ((gfxsize + 1) << 4);
+ 		if (!(capid & (1 << (48 - 32))))
+ 			sysinfo->ggc |= 0x0800;
+ 	}
+-- 
+2.8.2
+