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-rw-r--r--src/northbridge/intel/gm45/igd.c13
1 files changed, 6 insertions, 7 deletions
diff --git a/src/northbridge/intel/gm45/igd.c b/src/northbridge/intel/gm45/igd.c
index 1164339c8a..45144aae2e 100644
--- a/src/northbridge/intel/gm45/igd.c
+++ b/src/northbridge/intel/gm45/igd.c
@@ -153,17 +153,16 @@ void igd_compute_ggc(sysinfo_t *const sysinfo)
if (!sysinfo->enable_igd || (capid & (1 << (33 - 32))))
sysinfo->ggc = 0x0002;
else {
- u8 gfxsize;
+ /* 4 for 32MB, default if not set in cmos */
+ u8 gfxsize = 4;
/* 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) {
- /* 4 for 32MB, default if not set in cmos */
- gfxsize = 4;
- }
+ get_option(&gfxsize, "gfx_uma_size");
/* Handle invalid cmos settings */
- if (gfxsize > 12)
- gfxsize = 4;
+ /* Only allow settings between 32MB and 352MB */
+ gfxsize = MIN(MAX(gfxsize, 4), 12);
+
sysinfo->ggc = 0x0300 | ((gfxsize + 1) << 4);
if (!(capid & (1 << (48 - 32))))
sysinfo->ggc |= 0x0800;