XXX Add TF-M secure prints

Author: Patater

components/TARGET_PSA/TARGET_TFM/COMPONENT_SPE/secure_fw/core/secure_utilities.h

@@ -25,8 +25,6 @@
 #define EXC_NUM_PENDSV          (14)
 #define EXC_NUM_SYSTICK         (15)
 
-#define printf(...)
-
 /* Disable NS exceptions by setting NS PRIMASK to 1 */
 #define TFM_NS_EXC_DISABLE()    __TZ_set_PRIMASK_NS(1)
 /* Enable NS exceptions by setting NS PRIMASK to 0 */

components/TARGET_PSA/TARGET_TFM/COMPONENT_SPE/secure_fw/core/tfm_core.c

@@ -6,6 +6,7 @@
  */
 
 #include <stdio.h>
+#include "hal/serial_api.h"
 #include "region_defs.h"
 #include "tfm_core.h"
 #include "tfm_internal.h"
@@ -76,6 +77,11 @@ void configure_ns_code(void)
     ns_entry = (nsfptr_t) cmse_nsfptr_create(entry_ptr);
 }
 
+#if DEVICE_SERIAL
+extern int stdio_uart_inited;
+extern serial_t stdio_uart;
+#endif
+
 int32_t tfm_core_init(void)
 {
     /* Enables fault handlers */
@@ -89,7 +95,12 @@ int32_t tfm_core_init(void)
 
     __enable_irq();
 
-    LOG_MSG("Secure image initializing!");
+#if DEVICE_SERIAL
+    serial_init(&stdio_uart, STDIO_UART_TX, STDIO_UART_RX);
+    serial_baud(&stdio_uart, MBED_CONF_PLATFORM_STDIO_BAUD_RATE);
+#endif
+
+    LOG_MSG("Secure image initializing!\r\n");
 
 #ifdef TFM_CORE_DEBUG
     printf("TFM level is: %d\r\n", TFM_LVL);

targets/targets.json

@@ -2144,6 +2144,7 @@
         ],
         "device_has_add": [
             "FLASH",
+            "SERIAL",
             "TRNG"
         ],
         "deliver_to_target": "LPC55S69_NS",