[S] Change in coreboot[master]: Revert "soc/intel/systemagent.c: Fix memory type reporting"

[Arthur Heymans (Code Review)]

Arthur Heymans has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/68879 )

Change subject: Revert "soc/intel/systemagent.c: Fix memory type reporting"
......................................................................

Revert "soc/intel/systemagent.c: Fix memory type reporting"

This reverts commit 9c2f3cc9d9b3b3b7cfe1e62a70ea3061ca6c15ac.

This broke the smihandler for no clear reason on some platforms.

Change-Id: I72da99c019241b627ce8b543937364a53a5fe97b
Signed-off-by: Arthur Heymans 
---
M src/soc/intel/common/block/systemagent/systemagent.c
1 file changed, 19 insertions(+), 2 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/79/68879/1

diff --git a/src/soc/intel/common/block/systemagent/systemagent.c b/src/soc/intel/common/block/systemagent/systemagent.c
index 1938765..69e4197 100644
--- a/src/soc/intel/common/block/systemagent/systemagent.c
+++ b/src/soc/intel/common/block/systemagent/systemagent.c
@@ -201,8 +201,11 @@

sa_get_mem_map(dev, &sa_map_values[0]);

-	/* top_of_ram -> TOLUD */
-	reserved_ram_from_to(dev, index++, top_of_ram, sa_map_values[SA_TOLUD_REG]);
+	/*
+	 * top_of_ram -> TOLUD: This contains TSEG which needs to be uncacheable
+	 * for proper operation of the smihandler.
+	 */
+	mmio_from_to(dev, index++, top_of_ram, sa_map_values[SA_TOLUD_REG]);

/* 4GiB -> TOUUD */
    upper_ram_end(dev, index++, sa_map_values[SA_TOUUD_REG]);