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From 9ef9dc651aeaabba35d3d8c8fd8ab7fd87f9d7ac 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.
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..f9f4a48 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=352M
\ No newline at end of file
diff --git a/src/mainboard/lenovo/t400/cmos.layout b/src/mainboard/lenovo/t400/cmos.layout
index 8e642f8..881bc02 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 +129,19 @@ 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
+11 12 352M
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..d6b5fbd 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=352M
\ No newline at end of file
diff --git a/src/mainboard/lenovo/x200/cmos.layout b/src/mainboard/lenovo/x200/cmos.layout
index 931cb4a..7db5347 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 +125,19 @@ 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
+11 12 352M
# -----------------------------------------------------------------
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..1054b2a 100644
--- a/src/northbridge/intel/gm45/igd.c
+++ b/src/northbridge/intel/gm45/igd.c
@@ -153,10 +153,12 @@ 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 */
+ gfxsize = 12;
}
- sysinfo->ggc = 0x0300 | ((gfxsize + 5) << 4);
+ if (gfxsize > 12)
+ gfxsize = 12;
+ sysinfo->ggc = 0x0300 | ((gfxsize + 1) << 4);
if (!(capid & (1 << (48 - 32))))
sysinfo->ggc |= 0x0800;
}
--
2.8.2
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