diff --git a/meta-arm-bsp/recipes-security/trusted-services/secure-partitions/0024-Increase-SMM-gateway-UEFI-variable-macro-value.patch b/meta-arm-bsp/recipes-security/trusted-services/secure-partitions/0024-Increase-SMM-gateway-UEFI-variable-macro-value.patch
new file mode 100644
index 00000000..00f80efb
--- /dev/null
+++ b/meta-arm-bsp/recipes-security/trusted-services/secure-partitions/0024-Increase-SMM-gateway-UEFI-variable-macro-value.patch
@@ -0,0 +1,35 @@
+Upstream-Status: Pending [Not submitted to upstream yet]
+Signed-off-by: Gowtham Suresh Kumar <gowtham.sureshkumar@arm.com>
+
+From 9b9261f73f93a5ac7ad823da376858b56560a08b 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>
+---
+ 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 7828b3a..7e6729e 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)
+-- 
+2.17.1
+
diff --git a/meta-arm-bsp/recipes-security/trusted-services/ts-corstone1000.inc b/meta-arm-bsp/recipes-security/trusted-services/ts-corstone1000.inc
index 5be9be79..5afb1310 100644
--- a/meta-arm-bsp/recipes-security/trusted-services/ts-corstone1000.inc
+++ b/meta-arm-bsp/recipes-security/trusted-services/ts-corstone1000.inc
@@ -34,6 +34,7 @@ SRC_URI:append = " \
                   file://0021-Add-psa-ipc-attestation-to-se-proxy.patch \
                   file://0022-Setup-its-backend-as-openamp-rpc-using-secure-storag.patch \
                   file://0023-add-psa-ipc-crypto-backend.patch \
+                  file://0024-Increase-SMM-gateway-UEFI-variable-macro-value.patch \
                   "
 
 SRC_URI_MBED = "git://github.com/ARMmbed/mbed-crypto.git;protocol=https;branch=development;name=mbed;destsuffix=git/mbedcrypto"