[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>

diff --git a/arch/powerpc/boot/devtree.c b/arch/powerpc/boot/devtree.c
index e5dfe449731393cb7aec718b4fd169964309def0..60f561e307a99090b423bc3e02e90891e9d51b48 100644 (file)
--- 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",

diff --git a/arch/powerpc/boot/ops.h b/arch/powerpc/boot/ops.h
index 6036a98e646afa1aca3ff90db53396d84e158fe0..5872ef1779ae5d93c94e7a2b367931f2ec48ed3b 100644 (file)
--- a/arch/powerpc/boot/ops.h
+++ b/arch/powerpc/boot/ops.h
@@ -159,9 +159,23 @@ static inline void *find_node_by_devtype(const void *prev,
        return find_node_by_prop_value_str(prev, "device_type", type);
 }
 
+static inline void *find_node_by_alias(const char *alias)
+{
+       void *devp = finddevice("/aliases");
+
+       if (devp) {
+               char path[MAX_PATH_LEN];
+               if (getprop(devp, alias, path, MAX_PATH_LEN) > 0)
+                       return finddevice(path);
+       }
+
+       return NULL;
+}
+
 void dt_fixup_memory(u64 start, u64 size);
 void dt_fixup_cpu_clocks(u32 cpufreq, u32 tbfreq, u32 busfreq);
 void dt_fixup_clock(const char *path, u32 freq);
+void dt_fixup_mac_address_by_alias(const char *alias, const u8 *addr);
 void dt_fixup_mac_address(u32 index, const u8 *addr);
 void __dt_fixup_mac_addresses(u32 startindex, ...);
 #define dt_fixup_mac_addresses(...) \