From f3686dfb8fb97cb42c3d4f8ee2d7aa736d5cb760 Mon Sep 17 00:00:00 2001
From: Satish Kumar <satish.kumar01@arm.com>
Date: Wed, 3 Aug 2022 15:50:27 +0100
Subject: [PATCH 4/6] Platform Partition: Allow configuration of input and
 output buffer

The change makes input and output buffer size macros used by
the platform partition to be configured by cmake. This will
allow platforms to set the buffer size accordingly.

Change-Id: Ia492ce02f8744b0157228d9be51a9ec5b7c88ef6
Signed-off-by: Satish Kumar <satish.kumar01@arm.com>
Upstream-Status: Accepted [TF-Mv1.7.0]
---
 config/config_default.cmake                  | 2 ++
 secure_fw/partitions/platform/CMakeLists.txt | 6 ++++++
 secure_fw/partitions/platform/platform_sp.c  | 9 +++++++--
 3 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/config/config_default.cmake b/config/config_default.cmake
index 3112b707bc..497c972dc9 100755
--- a/config/config_default.cmake
+++ b/config/config_default.cmake
@@ -141,6 +141,8 @@ set(ATTEST_INCLUDE_OPTIONAL_CLAIMS      ON          CACHE BOOL      "Include opt
 set(ATTEST_INCLUDE_COSE_KEY_ID          OFF         CACHE BOOL      "Include COSE key-id in initial attestation token")
 
 set(TFM_PARTITION_PLATFORM              ON          CACHE BOOL      "Enable Platform partition")
+set(PLATFORM_SERVICE_INPUT_BUFFER_SIZE  64          CACHE STRING    "Size of input buffer in platform service.")
+set(PLATFORM_SERVICE_OUTPUT_BUFFER_SIZE 64          CACHE STRING    "Size of output buffer in platform service.")
 
 set(TFM_PARTITION_AUDIT_LOG             OFF         CACHE BOOL      "Enable Audit Log partition")
 
diff --git a/secure_fw/partitions/platform/CMakeLists.txt b/secure_fw/partitions/platform/CMakeLists.txt
index 4b37cd780c..3070f89d6d 100644
--- a/secure_fw/partitions/platform/CMakeLists.txt
+++ b/secure_fw/partitions/platform/CMakeLists.txt
@@ -47,6 +47,12 @@ target_link_libraries(tfm_psa_rot_partition_platform
         tfm_spm
 )
 
+target_compile_definitions(tfm_psa_rot_partition_platform
+    PRIVATE
+        INPUT_BUFFER_SIZE=${PLATFORM_SERVICE_INPUT_BUFFER_SIZE}
+        OUTPUT_BUFFER_SIZE=${PLATFORM_SERVICE_OUTPUT_BUFFER_SIZE}
+)
+
 ############################ Secure API ########################################
 
 target_sources(tfm_sprt
diff --git a/secure_fw/partitions/platform/platform_sp.c b/secure_fw/partitions/platform/platform_sp.c
index 673cb0ee06..87bd434720 100644
--- a/secure_fw/partitions/platform/platform_sp.c
+++ b/secure_fw/partitions/platform/platform_sp.c
@@ -38,8 +38,13 @@ static const int32_t nv_counter_access_map[NV_COUNTER_MAP_SIZE] = {
 #include "psa/service.h"
 #include "region_defs.h"
 
-#define INPUT_BUFFER_SIZE  64
-#define OUTPUT_BUFFER_SIZE 64
+#ifndef INPUT_BUFFER_SIZE
+#define INPUT_BUFFER_SIZE      64
+#endif
+
+#ifndef OUTPUT_BUFFER_SIZE
+#define OUTPUT_BUFFER_SIZE     64
+#endif
 
 typedef enum tfm_platform_err_t (*plat_func_t)(const psa_msg_t *msg);
 #endif /* TFM_PSA_API */
-- 
2.25.1