[POWERPC] 4xx: Enable EMAC for PPC405 Walnut board

This patch enables the ibm_newemac driver for the Walnut board.  It fixes the
device tree for the walnut board to order the MAL interrupts correctly and
adds the local-mac-address property to the EMAC node.  The bootwrapper is also
updated to extract the MAC address from the OpenBIOS offset where it is stored.

Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>

2 files changed, 11 insertions, 3 deletions

diff --git a/arch/powerpc/boot/dts/walnut.dts b/arch/powerpc/boot/dts/walnut.dts
index ec54f4e04ad6..fa681f5343fe 100644
--- a/arch/powerpc/boot/dts/walnut.dts
+++ b/arch/powerpc/boot/dts/walnut.dts
@@ -64,10 +64,15 @@
                 MAL: mcmal {
                         compatible = "ibm,mcmal-405gp", "ibm,mcmal";
                         dcr-reg = <180 62>;
-                        num-tx-chans = <2>;
+                        num-tx-chans = <1>;
                         num-rx-chans = <1>;
                         interrupt-parent = <&UIC0>;
-                        interrupts = <a 4 b 4 c 4 d 4 e 4>;
+                        interrupts = <
+                                b 4 /* TXEOB */
+                                c 4 /* RXEOB */
+                                a 4 /* SERR */
+                                d 4 /* TXDE */
+                                e 4 /* RXDE */>;
                 };
 
                 POB0: opb {
@@ -118,9 +123,10 @@
                                 compatible = "ibm,emac-405gp", "ibm,emac";
                                 interrupt-parent = <&UIC0>;
                                 interrupts = <9 4 f 4>;
+                                local-mac-address = [000000000000]; /* Filled in by zImage */
                                 reg = <ef600800 70>;
                                 mal-device = <&MAL>;
-                                mal-tx-channel = <0 1>;
+                                mal-tx-channel = <0>;
                                 mal-rx-channel = <0>;
                                 cell-index = <0>;
                                 max-frame-size = <5dc>;
diff --git a/arch/powerpc/boot/treeboot-walnut.c b/arch/powerpc/boot/treeboot-walnut.c
index 6be76b7edc10..bb2c309d70fc 100644
--- a/arch/powerpc/boot/treeboot-walnut.c
+++ b/arch/powerpc/boot/treeboot-walnut.c
@@ -109,6 +109,7 @@ static void walnut_flashsel_fixup(void)
         setprop(sram, "reg", reg_sram, sizeof(reg_sram));
 }
 
+#define WALNUT_OPENBIOS_MAC_OFF 0xfffffe0b
 static void walnut_fixups(void)
 {
         ibm4xx_fixup_memsize();
@@ -116,6 +117,7 @@ static void walnut_fixups(void)
         ibm4xx_quiesce_eth((u32 *)0xef600800, NULL);
         ibm4xx_fixup_ebc_ranges("/plb/ebc");
         walnut_flashsel_fixup();
+        dt_fixup_mac_addresses((u8 *) WALNUT_OPENBIOS_MAC_OFF);
 }
 
 void platform_init(void)