renesas-ra: Add mbedTLS support.

Signed-off-by: iabdalkader <i.abdalkader@gmail.com>

ports/renesas-ra/Makefile

@@ -344,6 +344,10 @@ SRC_C += $(addprefix $(BOARD_DIR)/ra_gen/,\
 	vector_data.c \
 	)
 
+ifeq ($(MICROPY_SSL_MBEDTLS),1)
+LIB_SRC_C += mbedtls/mbedtls_port.c
+endif
+
 ifeq ($(MICROPY_PY_BLUETOOTH),1)
 SRC_C += mpbthciport.c
 endif

ports/renesas-ra/mbedtls/mbedtls_config.h

@@ -0,0 +1,44 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2018-2023 Damien P. George
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#ifndef MICROPY_INCLUDED_MBEDTLS_CONFIG_H
+#define MICROPY_INCLUDED_MBEDTLS_CONFIG_H
+
+// Enable mbedtls modules.
+#define MBEDTLS_HAVE_TIME
+#define MBEDTLS_HAVE_TIME_DATE
+
+// Time hook.
+#include <time.h>
+extern time_t ra_rtctime_seconds(time_t *timer);
+#define MBEDTLS_PLATFORM_TIME_MACRO ra_rtctime_seconds
+
+// Set MicroPython-specific options.
+#define MICROPY_MBEDTLS_CONFIG_BARE_METAL (1)
+
+// Include common mbedtls configuration.
+#include "extmod/mbedtls/mbedtls_config_common.h"
+
+#endif /* MICROPY_INCLUDED_MBEDTLS_CONFIG_H */

ports/renesas-ra/mbedtls/mbedtls_port.c

@@ -0,0 +1,80 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2023 Damien P. George
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "rng.h"
+#include "mbedtls_config.h"
+
+#if defined(MBEDTLS_HAVE_TIME) || defined(MBEDTLS_HAVE_TIME_DATE)
+#include "rtc.h"
+#include "shared/timeutils/timeutils.h"
+#endif
+
+int mbedtls_hardware_poll(void *data, unsigned char *output, size_t len, size_t *olen) {
+    uint32_t val = 0;
+    int n = 0;
+    *olen = len;
+    while (len--) {
+        if (!n) {
+            val = rng_read();
+            n = 4;
+        }
+        *output++ = val;
+        val >>= 8;
+        --n;
+    }
+    return 0;
+}
+
+#if defined(MBEDTLS_HAVE_TIME)
+time_t ra_rtctime_seconds(time_t *timer) {
+    rtc_init_finalise();
+    RTC_TimeTypeDef time;
+    RTC_DateTypeDef date;
+    rtc_get_time(&time);
+    rtc_get_date(&date);
+    return timeutils_seconds_since_epoch(2000 + date.Year, date.Month, date.Date, time.Hours, time.Minutes, time.Seconds);
+}
+#endif
+
+#if defined(MBEDTLS_HAVE_TIME_DATE)
+struct tm *gmtime(const time_t *timep) {
+    static struct tm tm;
+    timeutils_struct_time_t tm_buf = {0};
+    timeutils_seconds_since_epoch_to_struct_time(*timep, &tm_buf);
+
+    tm.tm_sec = tm_buf.tm_sec;
+    tm.tm_min = tm_buf.tm_min;
+    tm.tm_hour = tm_buf.tm_hour;
+    tm.tm_mday = tm_buf.tm_mday;
+    tm.tm_mon = tm_buf.tm_mon - 1;
+    tm.tm_year = tm_buf.tm_year - 1900;
+    tm.tm_wday = tm_buf.tm_wday;
+    tm.tm_yday = tm_buf.tm_yday;
+    tm.tm_isdst = -1;
+
+    return &tm;
+}
+#endif

ports/renesas-ra/mpconfigport.h

@@ -89,6 +89,7 @@
 #endif
 
 // Python internal features
+#define MICROPY_TRACKED_ALLOC       (MICROPY_SSL_MBEDTLS || MICROPY_BLUETOOTH_BTSTACK)
 #define MICROPY_READER_VFS          (1)
 #define MICROPY_ENABLE_GC           (1)
 #define MICROPY_ENABLE_EMERGENCY_EXCEPTION_BUF (1)