Merge branch 'feature/mbedtls_time_alt' into 'master'

mbedtls: Add config for `MBEDTLS_PLATFORM_TIME_ALT`

Closes IDF-4752

See merge request espressif/esp-idf!17448

components/mbedtls/Kconfig

@@ -465,6 +465,15 @@ menu "mbedTLS"
             the rest of the firmware doesn't call any standard timekeeeping
             functions.
 
+    config MBEDTLS_PLATFORM_TIME_ALT
+        bool "Enable mbedtls time support: platform-specific"
+        depends on MBEDTLS_HAVE_TIME
+        default n
+        help
+            Enabling this config will provide users with a function
+            "mbedtls_platform_set_time()" that allows to set an alternative
+            time function pointer.
+
     config MBEDTLS_HAVE_TIME_DATE
         bool "Enable mbedtls certificate expiry check"
         depends on MBEDTLS_HAVE_TIME

components/mbedtls/port/include/mbedtls/esp_config.h

@@ -67,6 +67,26 @@
 #undef MBEDTLS_HAVE_TIME_DATE
 #endif
 
+
+/**
+ * \def MBEDTLS_PLATFORM_TIME_ALT
+ *
+ * mbed TLS will provide a function "mbedtls_platform_set_time()"
+ * that allows you to set an alternative time function pointer.
+ *
+ * All these define require MBEDTLS_PLATFORM_C to be defined!
+ *
+ * \warning MBEDTLS_PLATFORM_TIME_ALT cannot be defined at the same time as
+ * MBEDTLS_PLATFORM_TIME_MACRO!
+ *
+ * Requires: MBEDTLS_PLATFORM_TIME_ALT requires MBEDTLS_HAVE_TIME
+ */
+#ifdef CONFIG_MBEDTLS_PLATFORM_TIME_ALT
+#define MBEDTLS_PLATFORM_TIME_ALT
+#else
+#undef MBEDTLS_PLATFORM_TIME_ALT
+#endif
+
 /**
  * \def MBEDTLS_PLATFORM_MEMORY
  *