ipxe/netboot: add script for Provisioner

.gitea/workflows/ipxe.yaml

@@ -32,7 +32,7 @@ jobs:
           mv bin-i386-pcbios/undionly.kpxe artifact/undionly.kpxe
           mv bin-x86_64-efi/ipxe.efi artifact/ipxe64.efi
       - name: update Nightly Release
-        uses: akkuman/gitea-release-action@v1
+        uses: watho/gitea-release-action@fix_error_on_delete_attachment
         with:
           name: ipxe
           prerelease: true

ipxe/netboot.ipxe

@@ -1 +1,27 @@
 #!ipxe
+
+#Init networking
+dhcp
+
+#Print useful information for debugging
+echo next-server is ${next-server}
+echo filaneme is ${filename}
+echo MAC address is ${net0/mac}
+echo IP address is ${ip}
+
+#Provisioner uses the following pattern: /boot/{mac}
+set server http://${next-server}/boot/${mac:hexhyp}
+
+# Make an HTTP HEAD request to check if the URL exists
+http ${server} head || goto link_does_not_exist
+
+#Make sure the link is valid
+isset ${http_status} || goto link_does_not_exist
+iseq ${http_status} 200 && goto link_exists
+
+:link_does_not_exist
+echo Link ${server} does not exist, booting from next bios/uefi target
+exit
+
+:link_exists
+chain ${server}