efi_loader: Add network access support
We can now successfully boot EFI applications from disk, but users
may want to also run them from a PXE setup.
This patch implements rudimentary network support, allowing a payload
to send and receive network packets.
With this patch, I was able to successfully run grub2 with network
access inside of QEMU's -M xlnx-ep108.
Signed-off-by: Alexander Graf <agraf@suse.de>
diff --git a/cmd/bootefi.c b/cmd/bootefi.c
index 7f552fc..d3a2331 100644
--- a/cmd/bootefi.c
+++ b/cmd/bootefi.c
@@ -197,6 +197,13 @@
#ifdef CONFIG_LCD
efi_gop_register();
#endif
+#ifdef CONFIG_NET
+ void *nethandle = loaded_image_info.device_handle;
+ efi_net_register(&nethandle);
+
+ if (!memcmp(bootefi_device_path[0].str, "N\0e\0t", 6))
+ loaded_image_info.device_handle = nethandle;
+#endif
/* Call our payload! */
#ifdef DEBUG_EFI