RP2350 fixes, tested on 2W-compatible

Author: earlephilhower

cores/rp2040/freertos/lwip_freertos.c

@@ -1,15 +1,18 @@
 // For FreeRTOS, we'll just use the NOSYS version because we already safely handle it
 #ifdef __FREERTOS
 
+#include "lwip/init.h"
 #include "pico/async_context.h"
 
-extern bool lwip_nosys_init(async_context_t *context);
-extern void lwip_nosys_deinit(async_context_t *context);
-
 bool lwip_freertos_init(async_context_t *context) {
-    return lwip_nosys_init(context);
+    static bool done_lwip_init;
+    if (!done_lwip_init) {
+        lwip_init();
+        done_lwip_init = true;
+    }
+    return true;
 }
 void lwip_freertos_deinit(__unused async_context_t *context) {
-    lwip_nosys_deinit(context);
+    panic("unsupported");
 }
 #endif

cores/rp2040/lwip_wrap.cpp

@@ -51,7 +51,7 @@ extern "C" {
     void __wrap_lwip_init() {
         if (!_lwip_rng) {
             recursive_mutex_init(&__lwipMutex);
-            _lwip_rng = new XoshiroCpp::Xoshiro256PlusPlus(micros() * rp2040.getCycleCount());
+            _lwip_rng = new XoshiroCpp::Xoshiro256PlusPlus(micros());
             __real_lwip_init();
         }
     }