feat: add GENET v5 Ethernet driver

programs/src/dhcp/main.cpp

@@ -250,16 +250,22 @@ extern "C" void _start() {
 
     montauk::service_log("MontaukOS DHCP Client");
 
-    // 0. Check if any device with an up link even exists. 
+    // 0. Check if any device with an up link even exists. A wired PHY
+    // still autonegotiating at boot (a few seconds after its reset) gets
+    // a grace period; with no wired interface at all there is nothing to
+    // wait for.
     montauk::abi::NetIfInfo ifs[4];
-    int n = montauk::net_interfaces(ifs, 4);
-
     bool link = false;
 
-    for (int i = 0; i < n; i++) {
-        if (ifs[i].linkUp == true) {
-            link = true;
+    for (int attempt = 0; attempt < 40 && !link; attempt++) {
+        int n = montauk::net_interfaces(ifs, 4);
+        bool wired = false;
+        for (int i = 0; i < n; i++) {
+            if (ifs[i].linkUp) link = true;
+            if (ifs[i].kind == montauk::abi::NETIF_KIND_ETHERNET) wired = true;
         }
+        if (link || !wired) break;
+        montauk::sleep_ms(250);
     }
 
     if (link == false) {