diff --git a/meta-arm/meta-arm-bsp/recipes-security/trusted-services/secure-partitions/corstone1000/0024-Increase-SMM-gateway-UEFI-variable-macro-value.patch b/meta-arm/meta-arm-bsp/recipes-security/trusted-services/secure-partitions/corstone1000/0024-Increase-SMM-gateway-UEFI-variable-macro-value.patch
new file mode 100644
index 0000000..91207bd
--- /dev/null
+++ b/meta-arm/meta-arm-bsp/recipes-security/trusted-services/secure-partitions/corstone1000/0024-Increase-SMM-gateway-UEFI-variable-macro-value.patch
@@ -0,0 +1,34 @@
+From 8fca2a8eed6ebc1cbf9f7972c6a9bb137ebafe1a Mon Sep 17 00:00:00 2001
+From: Gowtham Suresh Kumar <gowtham.sureshkumar@arm.com>
+Date: Sun, 12 Dec 2021 17:07:03 +0000
+Subject: [PATCH] Increase SMM gateway UEFI variable macro value
+
+The maximum number of UEFI variables that be supported by SMM
+gateway is currently 40. When more than 40 variables are written,
+or read SMM gateway returns error code. Currently this value is
+increased to 100 to support more UEFI variables.
+
+Signed-off-by: Gowtham Suresh Kumar <gowtham.sureshkumar@arm.com>
+
+Upstream-Status: Pending [Not submitted to upstream yet]
+Signed-off-by: Gowtham Suresh Kumar <gowtham.sureshkumar@arm.com>
+
+
+---
+ deployments/smm-gateway/smm_gateway.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/deployments/smm-gateway/smm_gateway.c b/deployments/smm-gateway/smm_gateway.c
+index 7828b3af..7e6729ee 100644
+--- a/deployments/smm-gateway/smm_gateway.c
++++ b/deployments/smm-gateway/smm_gateway.c
+@@ -20,6 +20,9 @@
+ #define SMM_GATEWAY_NV_STORE_SN		"sn:ffa:751bf801-3dde-4768-a514-0f10aeed1790:0"
+ #endif
+ 
++/* Maximum number of UEFI variables set to 100 */
++#define SMM_GATEWAY_MAX_UEFI_VARIABLES		(100)
++
+ /* Default maximum number of UEFI variables */
+ #ifndef SMM_GATEWAY_MAX_UEFI_VARIABLES
+ #define SMM_GATEWAY_MAX_UEFI_VARIABLES		(40)