new file mode 100644
@@ -0,0 +1,27 @@
+From 041d30bb9cc6857f5ef26ded154ff7126dafaa20 Mon Sep 17 00:00:00 2001
+From: Emekcan Aras <emekcan.aras@arm.com>
+Date: Fri, 16 Jun 2023 10:47:48 +0100
+Subject: [PATCH] plat: corstone1000: add compile definitions for
+ ECP_DP_SECP512R1
+
+Corstone1000 runs PSA-API tests which requires this ECC algorithm.
+Without setting this, corstone1000 fails psa-api-crypto-test no 243.
+
+Signed-off-by: Emekcan Aras <emekcan.aras@arm.com>
+---
+ platform/providers/arm/corstone1000/platform.cmake | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/platform/providers/arm/corstone1000/platform.cmake b/platform/providers/arm/corstone1000/platform.cmake
+index dbdf1097..e7a295dd 100644
+--- a/platform/providers/arm/corstone1000/platform.cmake
++++ b/platform/providers/arm/corstone1000/platform.cmake
+@@ -14,3 +14,5 @@ target_compile_definitions(${TGT} PRIVATE
+ SMM_VARIABLE_INDEX_STORAGE_UID=0x787
+ SMM_GATEWAY_MAX_UEFI_VARIABLES=100
+ )
++
++add_compile_definitions(MBEDTLS_ECP_DP_SECP521R1_ENABLED)
+--
+2.17.1
+
@@ -6,6 +6,7 @@ SRC_URI:append:corstone1000 = " \
file://0002-Fixes-in-AEAD-for-psa-arch-test-54-and-58.patch;patchdir=../trusted-services \
file://0003-FMP-Support-in-Corstone1000.patch;patchdir=../trusted-services \
file://0004-GetNextVariableName-Fix.patch;patchdir=../trusted-services \
+ file://0005-plat-corstone1000-add-compile-definitions-for-ECP_DP.patch;patchdir=../trusted-services \
"