From c16891ecbd17200f303a5e57eaa6240f8f8065b4 Mon Sep 17 00:00:00 2001
From: Jeremy Compostella <jeremy.compostella@intel.com>
Date: Tue, 27 May 2025 08:59:39 -0700
Subject: [PATCH] soc/intel/meteorlake: Use CACHE_TMP_RAMTOP for TME exclusion
 range

This commit updates the fill_tme_params() function to utilize the
CACHE_TMP_RAMTOP constant instead of hardcoded values for calculating
the TME exclusion range.

Change-Id: I199182de8b8b219b0c45b27746b7415527cb9976
Signed-off-by: Jeremy Compostella <jeremy.compostella@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/87868
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Subrata Banik <subratabanik@google.com>
---
 src/soc/intel/meteorlake/romstage/fsp_params.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/soc/intel/meteorlake/romstage/fsp_params.c b/src/soc/intel/meteorlake/romstage/fsp_params.c
index 190cb73085..57e56595a9 100644
--- a/src/soc/intel/meteorlake/romstage/fsp_params.c
+++ b/src/soc/intel/meteorlake/romstage/fsp_params.c
@@ -7,6 +7,7 @@
 #include <cpu/intel/common/common.h>
 #include <cpu/intel/cpu_ids.h>
 #include <cpu/x86/msr.h>
+#include <cpu/x86/mtrr.h>
 #include <device/device.h>
 #include <device/pci.h>
 #include <drivers/wifi/generic/wifi.h>
@@ -202,8 +203,8 @@ static void fill_tme_params(FSP_M_CONFIG *m_cfg)
 						"Full memory encryption is enabled.\n");
 			return;
 		}
-		m_cfg->TmeExcludeBase = (ram_top - 16*MiB);
-		m_cfg->TmeExcludeSize = 16*MiB;
+		m_cfg->TmeExcludeBase = (ram_top - CACHE_TMP_RAMTOP);
+		m_cfg->TmeExcludeSize = CACHE_TMP_RAMTOP;
 	}
 }