Add check for unsupported partial curves acceleration
Manual test: run test_psa_crypto_config_accel_ecc_non_weierstrass_curves
or test_psa_crypto_config_accel_ecc_weierstrass_curves as they are now,
observe it failing with the expected #error.
Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
diff --git a/include/mbedtls/check_config.h b/include/mbedtls/check_config.h
index 8659860..e18e9a5 100644
--- a/include/mbedtls/check_config.h
+++ b/include/mbedtls/check_config.h
@@ -141,6 +141,30 @@
#endif /* not all of public, basic, import, export */
#endif /* one of public, basic, import, export */
+/* Limitations on ECC curves acceleration: partial curve acceleration is only
+ * supported with crypto excluding PK, X.509 or TLS.
+ * Note: no need to check X.509 as it depends on PK. */
+#if defined(MBEDTLS_PSA_ACCEL_ECC_BRAINPOOL_P_R1_256) || \
+ defined(MBEDTLS_PSA_ACCEL_ECC_BRAINPOOL_P_R1_384) || \
+ defined(MBEDTLS_PSA_ACCEL_ECC_BRAINPOOL_P_R1_512) || \
+ defined(MBEDTLS_PSA_ACCEL_ECC_MONTGOMERY_255) || \
+ defined(MBEDTLS_PSA_ACCEL_ECC_MONTGOMERY_448) || \
+ defined(MBEDTLS_PSA_ACCEL_ECC_SECP_K1_192) || \
+ defined(MBEDTLS_PSA_ACCEL_ECC_SECP_K1_224) || \
+ defined(MBEDTLS_PSA_ACCEL_ECC_SECP_K1_256) || \
+ defined(MBEDTLS_PSA_ACCEL_ECC_SECP_R1_192) || \
+ defined(MBEDTLS_PSA_ACCEL_ECC_SECP_R1_224) || \
+ defined(MBEDTLS_PSA_ACCEL_ECC_SECP_R1_256) || \
+ defined(MBEDTLS_PSA_ACCEL_ECC_SECP_R1_384) || \
+ defined(MBEDTLS_PSA_ACCEL_ECC_SECP_R1_521)
+#if defined(MBEDTLS_PSA_ECC_ACCEL_INCOMPLETE_CURVES)
+#if defined(MBEDTLS_PK_C) || \
+ defined(MBEDTLS_SSL_TLS_C)
+#error "Unsupported partial support for ECC curves acceleration, see docs/driver-only-builds.md"
+#endif /* modules beyond what's supported */
+#endif /* not all curves accelerated */
+#endif /* some curve accelerated */
+
#if defined(MBEDTLS_CTR_DRBG_C) && !defined(MBEDTLS_AES_C)
#error "MBEDTLS_CTR_DRBG_C defined, but not all prerequisites"
#endif