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-rw-r--r--src/soc/intel/skylake/romstage/romstage.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/src/soc/intel/skylake/romstage/romstage.c b/src/soc/intel/skylake/romstage/romstage.c
index 9b95f721ca..9c61095214 100644
--- a/src/soc/intel/skylake/romstage/romstage.c
+++ b/src/soc/intel/skylake/romstage/romstage.c
@@ -85,6 +85,15 @@ void soc_memory_init_params(struct romstage_params *params,
dev = dev_find_slot(0, PCI_DEVFN(PCH_DEV_SLOT_LPC, 0));
config = dev->chip_info;
+ /*
+ * Set IGD stolen size to 64MB. The FBC hardware for skylake does not
+ * have access to the bios_reserved range so it always assumes 8MB is
+ * used and so the kernel will avoid the last 8MB of the stolen window.
+ * With the default stolen size of 32MB(-8MB) there is not enough space
+ * for FBC to work with a high resolution panel.
+ */
+ upd->IgdDvmt50PreAlloc = 2;
+
upd->MmioSize = 0x800; /* 2GB in MB */
upd->TsegSize = CONFIG_SMM_TSEG_SIZE;
upd->IedSize = CONFIG_IED_REGION_SIZE;