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/net/bootp.c b/net/bootp.c
index d7852db..d91b307 100644
--- a/net/bootp.c
+++ b/net/bootp.c
@@ -10,6 +10,7 @@
#include <common.h>
#include <command.h>
+#include <efi_loader.h>
#include <net.h>
#include <net/tftp.h>
#include "bootp.h"
@@ -1025,6 +1026,7 @@
strlen(CONFIG_SYS_BOOTFILE_PREFIX)) == 0) {
#endif /* CONFIG_SYS_BOOTFILE_PREFIX */
dhcp_packet_process_options(bp);
+ efi_net_set_dhcp_ack(pkt, len);
debug("TRANSITIONING TO REQUESTING STATE\n");
dhcp_state = REQUESTING;
diff --git a/net/net.c b/net/net.c
index fba111e..1e1d23d 100644
--- a/net/net.c
+++ b/net/net.c
@@ -146,7 +146,7 @@
/* Ethernet bcast address */
const u8 net_bcast_ethaddr[6] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
const u8 net_null_ethaddr[6];
-#ifdef CONFIG_API
+#if defined(CONFIG_API) || defined(CONFIG_EFI_LOADER)
void (*push_packet)(void *, int len) = 0;
#endif
/* Network loop state */
@@ -1054,7 +1054,7 @@
if (len < ETHER_HDR_SIZE)
return;
-#ifdef CONFIG_API
+#if defined(CONFIG_API) || defined(CONFIG_EFI_LOADER)
if (push_packet) {
(*push_packet)(in_packet, len);
return;
diff --git a/net/tftp.c b/net/tftp.c
index f2889fe..ced45ec 100644
--- a/net/tftp.c
+++ b/net/tftp.c
@@ -8,6 +8,7 @@
#include <common.h>
#include <command.h>
+#include <efi_loader.h>
#include <mapmem.h>
#include <net.h>
#include <net/tftp.h>
@@ -804,6 +805,7 @@
printf("Load address: 0x%lx\n", load_addr);
puts("Loading: *\b");
tftp_state = STATE_SEND_RRQ;
+ efi_set_bootdev("Net", "", tftp_filename);
}
time_start = get_timer(0);