ppc4xx: Add device tree support to AMCC Yosemite

Add support for booting with a device tree blob. This is needed to boot
ARCH=powerpc kernels. Also add support for setting the eth0 mac address
via the ethaddr variable.

Signed-off-by: Ira W. Snyder <iws@ovro.caltech.edu>
Signed-off-by: Stefan Roese <sr@denx.de>

board/amcc/yosemite/yosemite.c

@@ -26,6 +26,8 @@
 #include <asm/processor.h>
 #include <asm/io.h>
 #include <spd_sdram.h>
+#include <libfdt.h>
+#include <fdt_support.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -554,3 +556,24 @@ void board_reset(void)
 	/* give reset to BCSR */
 	*(unsigned char *)(CFG_BCSR_BASE | 0x06) = 0x09;
 }
+
+#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
+void ft_board_setup(void *blob, bd_t *bd)
+{
+	u32 val[4];
+	int rc;
+
+	ft_cpu_setup(blob, bd);
+
+	/* Fixup NOR mapping */
+	val[0] = 0;				/* chip select number */
+	val[1] = 0;				/* always 0 */
+	val[2] = gd->bd->bi_flashstart;
+	val[3] = gd->bd->bi_flashsize;
+	rc = fdt_find_and_setprop(blob, "/plb/opb/ebc", "ranges",
+				  val, sizeof(val), 1);
+	if (rc)
+		printf("Unable to update property NOR mapping, err=%s\n",
+		       fdt_strerror(rc));
+}
+#endif /* defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) */

include/configs/yosemite.h

@@ -140,6 +140,14 @@
 #define CFG_SDRAM_BANKS	        (2)
 
 
+/*-----------------------------------------------------------------------
+ * Device tree support (Linux-2.6.26+)
+ *----------------------------------------------------------------------*/
+
+/* pass open firmware flat tree */
+#define CONFIG_OF_LIBFDT	1
+#define CONFIG_OF_BOARD_SETUP	1
+
 /*-----------------------------------------------------------------------
  * I2C
  *----------------------------------------------------------------------*/
@@ -227,6 +235,7 @@
 #define CONFIG_MII		1	/* MII PHY management		*/
 #define CONFIG_NET_MULTI        1	/* required for netconsole      */
 #define CONFIG_PHY1_ADDR        3
+#define CONFIG_HAS_ETH0		1	/* add support for "ethaddr"	*/
 #define CONFIG_HAS_ETH1		1	/* add support for "eth1addr"	*/
 #define CONFIG_PHY_ADDR		1	/* PHY address, See schematics	*/