[coreboot-gerrit] Change in coreboot[master]: soc/intel/cannonlake: Set IgdDvmt50PreAlloc accordingly to InternalGfx

[Christian Walter (Code Review)]

Christian Walter has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/39454 )

Change subject: soc/intel/cannonlake: Set IgdDvmt50PreAlloc accordingly to InternalGfx
......................................................................

soc/intel/cannonlake: Set IgdDvmt50PreAlloc accordingly to InternalGfx

Set IgdDvmt50PreAlloc accordingly to InternalGfx. Also parse the
InternalGfx which is coming from the devicetree.

Change-Id: I6f9e0f9855224614471d8ed23bf2a9786386ddca
Signed-off-by: Christian Walter 
---
M src/soc/intel/cannonlake/romstage/fsp_params.c
1 file changed, 8 insertions(+), 2 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/54/39454/1

diff --git a/src/soc/intel/cannonlake/romstage/fsp_params.c b/src/soc/intel/cannonlake/romstage/fsp_params.c
index 3c5be30..3c4b547 100644
--- a/src/soc/intel/cannonlake/romstage/fsp_params.c
+++ b/src/soc/intel/cannonlake/romstage/fsp_params.c
@@ -33,8 +33,14 @@
    uint32_t mask = 0;
    const struct device *dev = pcidev_path_on_root(PCH_DEVFN_ISH);

-	/* Set IGD stolen size to 64MB. */
-	m_cfg->IgdDvmt50PreAlloc = 2;
+	if (config->InternalGfx == 1) {
+		/* Set IGD stolen size to 64MB. */
+		m_cfg->InternalGfx = 1;
+		m_cfg->IgdDvmt50PreAlloc = 2;
+	} else {
+		m_cfg->InternalGfx = 0;
+		m_cfg->IgdDvmt50PreAlloc = 0;
+	}
    m_cfg->TsegSize = CONFIG_SMM_TSEG_SIZE;
    m_cfg->IedSize = CONFIG_IED_REGION_SIZE;
    m_cfg->SaGv = config->SaGv;