From 97322c3e074d49b1e2c6d98c7e69e5da3093636f Mon Sep 17 00:00:00 2001
From: Hans de Goede <hdegoede@redhat.com>
Date: Wed, 27 Jul 2016 17:58:06 +0200
Subject: [PATCH] sunxi: Ensure that the NIC specific bytes of the mac are not
all 0
On 2 of my H3 boards bytes 13-15 of the SID are all 0 leading to
the NIC specific bytes of the mac all being 0, which leads to the
boards not getting an ipv6 address from the dhcp server.
This commits adds a check to ensure this does not happen.
Cc: Chen-Yu Tsai <wens@csie.org>
Cc: Corentin LABBE <clabbe.montjoie@gmail.com>
Cc: Amit Singh Tomar <amittomer25@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
---
board/sunxi/board.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/board/sunxi/board.c b/board/sunxi/board.c
index 36cf96381c..ef3fe26d69 100644
--- a/board/sunxi/board.c
+++ b/board/sunxi/board.c
@@ -623,6 +623,10 @@ static void setup_environment(const void *fdt)
ret = sunxi_get_sid(sid);
if (ret == 0 && sid[0] != 0 && sid[3] != 0) {
+ /* Ensure the NIC specific bytes of the mac are not all 0 */
+ if ((sid[3] & 0xffffff) == 0)
+ sid[3] |= 0x800000;
+
for (i = 0; i < 4; i++) {
sprintf(ethaddr, "ethernet%d", i);
if (!fdt_get_alias(fdt, ethaddr))
--
2.39.5