grub-core: fix endianness problem

Fix tftp stalls on loading files bigger than ~32k bug by cherry picking
a patch from grub upstream.

(From OE-Core rev: adac8c63a0eefd3ce118f8964b05a952e629da38)

Signed-off-by: Shan Hai <shan.hai@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 45 insertions, 0 deletions

diff --git a/meta/recipes-bsp/grub/grub-2.00/fix-endianness-problem.patch b/meta/recipes-bsp/grub/grub-2.00/fix-endianness-problem.patch
new file mode 100644
index 0000000000..079992afba
--- /dev/null
+++ b/meta/recipes-bsp/grub/grub-2.00/fix-endianness-problem.patch
@@ -0,0 +1,44 @@
+grub-core/net/tftp.c: fix endianness problem.
+
+        * grub-core/net/tftp.c (ack): Fix endianness problem.
+        (tftp_receive): Likewise.
+        Reported by: Michael Davidsaver.
+
+Upstream-Status: Backport
+
+diff --git a/ChangeLog b/ChangeLog
+index 81bdae9..c2f42d5 100644
+--- a/ChangeLog
++++ b/ChangeLog
+@@ -1,3 +1,9 @@
++2012-07-02  Vladimir Serbinenko  <phcoder@gmail.com>
++
++       * grub-core/net/tftp.c (ack): Fix endianness problem.
++       (tftp_receive): Likewise.
++       Reported by: Michael Davidsaver.
++
+ 2012-06-27  Vladimir Serbinenko  <phcoder@gmail.com>
+ 
+        * configure.ac: Bump version to 2.00.
+diff --git a/grub-core/net/tftp.c b/grub-core/net/tftp.c
+index 9c70efb..d0f39ea 100644
+--- a/grub-core/net/tftp.c
++++ b/grub-core/net/tftp.c
+@@ -143,7 +143,7 @@ ack (tftp_data_t data, grub_uint16_t block)
+ 
+   tftph_ack = (struct tftphdr *) nb_ack.data;
+   tftph_ack->opcode = grub_cpu_to_be16 (TFTP_ACK);
+-  tftph_ack->u.ack.block = block;
++  tftph_ack->u.ack.block = grub_cpu_to_be16 (block);
+ 
+   err = grub_net_send_udp_packet (data->sock, &nb_ack);
+   if (err)
+@@ -225,7 +225,7 @@ tftp_receive (grub_net_udp_socket_t sock __attribute__ ((unused)),
+            grub_priority_queue_pop (data->pq);
+ 
+            if (file->device->net->packs.count < 50)
+-             err = ack (data, tftph->u.data.block);
++             err = ack (data, data->block + 1);
+            else
+              {
+                file->device->net->stall = 1;
diff --git a/meta/recipes-bsp/grub/grub_2.00.bb b/meta/recipes-bsp/grub/grub_2.00.bb
index ce2d680eec..3c1ec0b651 100644
--- a/meta/recipes-bsp/grub/grub_2.00.bb
+++ b/meta/recipes-bsp/grub/grub_2.00.bb
@@ -22,6 +22,7 @@ SRC_URI = "ftp://ftp.gnu.org/gnu/grub/grub-${PV}.tar.gz \
           file://check-if-liblzma-is-disabled.patch \
           file://fix-issue-with-flex-2.5.37.patch \
           file://grub-2.00-add-oe-kernel.patch \
+          file://fix-endianness-problem.patch \
           "
 
 SRC_URI[md5sum] = "e927540b6eda8b024fb0391eeaa4091c"