From b4914cfeb51dfee8a644ef2535d60d6da28dbc0b Mon Sep 17 00:00:00 2001
From: Thomas Daubney <thomas.daubney@arm.com>
Date: Tue, 4 Jun 2024 12:05:20 +0100
Subject: [PATCH] Remove MBEDTLS_CCM_ALT

Signed-off-by: Thomas Daubney <thomas.daubney@arm.com>
---
 include/mbedtls/mbedtls_config.h                 |  1 -
 tests/include/alt-dummy/ccm_alt.h                | 16 ----------------
 tests/suites/test_suite_ccm.data                 |  1 -
 .../drivers/builtin/include/mbedtls/ccm.h        |  8 --------
 tf-psa-crypto/drivers/builtin/src/ccm.c          |  4 ----
 5 files changed, 30 deletions(-)
 delete mode 100644 tests/include/alt-dummy/ccm_alt.h

diff --git a/include/mbedtls/mbedtls_config.h b/include/mbedtls/mbedtls_config.h
index c217cf79d5..452889955f 100644
--- a/include/mbedtls/mbedtls_config.h
+++ b/include/mbedtls/mbedtls_config.h
@@ -352,7 +352,6 @@
 
 //#define MBEDTLS_ARIA_ALT
 //#define MBEDTLS_CAMELLIA_ALT
-//#define MBEDTLS_CCM_ALT
 //#define MBEDTLS_CMAC_ALT
 //#define MBEDTLS_DES_ALT
 //#define MBEDTLS_GCM_ALT
diff --git a/tests/include/alt-dummy/ccm_alt.h b/tests/include/alt-dummy/ccm_alt.h
deleted file mode 100644
index c25f42b4a0..0000000000
--- a/tests/include/alt-dummy/ccm_alt.h
+++ /dev/null
@@ -1,16 +0,0 @@
-/* ccm_alt.h with dummy types for MBEDTLS_CCM_ALT */
-/*
- *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
- */
-
-#ifndef CCM_ALT_H
-#define CCM_ALT_H
-
-typedef struct mbedtls_ccm_context {
-    int dummy;
-}
-mbedtls_ccm_context;
-
-
-#endif /* ccm_alt.h */
diff --git a/tests/suites/test_suite_ccm.data b/tests/suites/test_suite_ccm.data
index 22150f7a71..e6818e7403 100644
--- a/tests/suites/test_suite_ccm.data
+++ b/tests/suites/test_suite_ccm.data
@@ -36,7 +36,6 @@ CCM lengths #6 tag length not even
 ccm_lengths:5:10:5:7:MBEDTLS_ERR_CCM_BAD_INPUT
 
 CCM lengths #7 AD too long (2^16 - 2^8)
-depends_on:!MBEDTLS_CCM_ALT
 ccm_lengths:5:10:65280:8:MBEDTLS_ERR_CCM_BAD_INPUT
 
 CCM lengths #8 msg too long for this IV length (2^16, q = 2)
diff --git a/tf-psa-crypto/drivers/builtin/include/mbedtls/ccm.h b/tf-psa-crypto/drivers/builtin/include/mbedtls/ccm.h
index 1da57c921b..67d173d7fc 100644
--- a/tf-psa-crypto/drivers/builtin/include/mbedtls/ccm.h
+++ b/tf-psa-crypto/drivers/builtin/include/mbedtls/ccm.h
@@ -58,10 +58,6 @@
 extern "C" {
 #endif
 
-#if !defined(MBEDTLS_CCM_ALT)
-// Regular implementation
-//
-
 /**
  * \brief    The CCM context-type definition. The CCM context is passed
  *           to the APIs called.
@@ -94,10 +90,6 @@ typedef struct mbedtls_ccm_context {
 }
 mbedtls_ccm_context;
 
-#else  /* MBEDTLS_CCM_ALT */
-#include "ccm_alt.h"
-#endif /* MBEDTLS_CCM_ALT */
-
 /**
  * \brief           This function initializes the specified CCM context,
  *                  to make references valid, and prepare the context
diff --git a/tf-psa-crypto/drivers/builtin/src/ccm.c b/tf-psa-crypto/drivers/builtin/src/ccm.c
index 45ed697dd3..2503e9f6ac 100644
--- a/tf-psa-crypto/drivers/builtin/src/ccm.c
+++ b/tf-psa-crypto/drivers/builtin/src/ccm.c
@@ -38,9 +38,6 @@
 #endif /* MBEDTLS_SELF_TEST && MBEDTLS_AES_C */
 #endif /* MBEDTLS_PLATFORM_C */
 
-#if !defined(MBEDTLS_CCM_ALT)
-
-
 /*
  * Initialize context
  */
@@ -626,7 +623,6 @@ int mbedtls_ccm_auth_decrypt(mbedtls_ccm_context *ctx, size_t length,
                             iv, iv_len, add, add_len,
                             input, output, tag, tag_len);
 }
-#endif /* !MBEDTLS_CCM_ALT */
 
 #if defined(MBEDTLS_SELF_TEST) && defined(MBEDTLS_CCM_GCM_CAN_AES)
 /*