[POWERPC] bootwrapper: Add find_node_by_alias and dt_fixup_mac_address_by_alias

Add the ability to set the mac address given the alias for the device.
Removes the need for having a linux,network-index property.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

1 files changed, 14 insertions, 0 deletions

diff --git a/arch/powerpc/boot/devtree.c b/arch/powerpc/boot/devtree.c
index e5dfe4497313..60f561e307a9 100644
--- a/arch/powerpc/boot/devtree.c
+++ b/arch/powerpc/boot/devtree.c
@@ -88,6 +88,20 @@ void dt_fixup_clock(const char *path, u32 freq)
         }
 }
 
+void dt_fixup_mac_address_by_alias(const char *alias, const u8 *addr)
+{
+        void *devp = find_node_by_alias(alias);
+
+        if (devp) {
+                printf("%s: local-mac-address <-"
+                       " %02x:%02x:%02x:%02x:%02x:%02x\n\r", alias,
+                       addr[0], addr[1], addr[2],
+                       addr[3], addr[4], addr[5]);
+
+                setprop(devp, "local-mac-address", addr, 6);
+        }
+}
+
 void dt_fixup_mac_address(u32 index, const u8 *addr)
 {
         void *devp = find_node_by_prop_value(NULL, "linux,network-index",