[sync] sync from internal repo

* use nuttx libc, disable system libc
* use tlsf as default
* update lhal flash driver
* add example readme
* add flash ini for new flash tool
* add fw header for new flash tool

examples/freertos/main.c

@@ -1,16 +1,14 @@
+#define DBG_TAG "MAIN"
+
 #include "bflb_mtimer.h"
 #include <FreeRTOS.h>
 #include "semphr.h"
 #include "log.h"
 #include "board.h"
 
-static uint8_t freertos_heap[configTOTAL_HEAP_SIZE];
-
-static HeapRegion_t xHeapRegions[] = {
-    { (uint8_t *)freertos_heap, 0 },
-    { NULL, 0 }, /* Terminates the array. */
-    { NULL, 0 }  /* Terminates the array. */
-};
+BFLOG_DEFINE_TAG(MAIN, DBG_TAG, true);
+#undef BFLOG_TAG
+#define BFLOG_TAG BFLOG_GET_TAG(MAIN)
 
 static TaskHandle_t consumer_handle;
 static TaskHandle_t producer_handle;
@@ -69,8 +67,6 @@ static void producer_task(void *pvParameters)
 int main(void)
 {
     board_init();
-    xHeapRegions[0].xSizeInBytes = configTOTAL_HEAP_SIZE;
-    vPortDefineHeapRegions(xHeapRegions);
 
     configASSERT((configMAX_PRIORITIES > 4));
 
@@ -88,6 +84,10 @@ int main(void)
     LOG_I("[OS] Starting producer task...\r\n");
     xTaskCreate(producer_task, (char *)"producer_task", 512, NULL, configMAX_PRIORITIES - 3, &producer_handle);
 
+#ifdef CONFIG_BFLOG
+    log_restart();
+#endif
+
     vTaskStartScheduler();
 
     while (1) {