ppc4xx: Enable device tree support (fdt) on Kilauea per default

This patch enables the fdt support on the AMCC Kilauea eval board.
Additionally now EBC ranges fdt fixup is included to support NOR
FLASH mapping via the Linux physmap_of driver.

This Kilauea port now support booting arch/ppc and arch/powerpc
Linux kernels. The default environment "net_nfs" is for arch/ppc
and "net_nfs_fdt" is for arch/powerpc. In the long run, arch/ppc
support will be removed.

Signed-off-by: Stefan Roese <sr@denx.de>

board/amcc/kilauea/kilauea.c

@@ -381,6 +381,20 @@ int post_hotkeys_pressed(void)
 #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/kilauea.h

@@ -166,12 +166,6 @@
 
 #undef	CONFIG_BOOTARGS
 
-#undef USE_LIBFDT
-#ifdef USE_LIBFDT
-/*
- * LIBFDT support is disabled for now since first Linux port is still
- * arch/ppc.
- */
 #define	CONFIG_EXTRA_ENV_SETTINGS					\
 	"logversion=2\0"						\
 	"netdev=eth0\0"							\
@@ -184,6 +178,9 @@
 		":${hostname}:${netdev}:off panic=1\0"			\
 	"addtty=setenv bootargs ${bootargs} console=ttyS0,${baudrate}\0"\
 	"net_nfs=tftp 200000 ${bootfile};"				\
+		"run nfsargs addip addtty;"				\
+		"bootm 200000\0"					\
+	"net_nfs_fdt=tftp 200000 ${bootfile};"				\
 		"tftp ${fdt_addr} ${fdt_file};"				\
 		"run nfsargs addip addtty;"				\
 		"bootm 200000 - ${fdt_addr}\0"				\
@@ -207,43 +204,8 @@
 	"nupdate=nand erase 0 60000;nand write 200000 0 60000;"		\
 		"setenv filesize;saveenv\0"				\
 	"nupd=run nload nupdate\0"					\
-	""
-#else
-#define	CONFIG_EXTRA_ENV_SETTINGS					\
-	"logversion=2\0"						\
-	"netdev=eth0\0"							\
-	"hostname=kilauea\0"						\
-	"nfsargs=setenv bootargs root=/dev/nfs rw "			\
-		"nfsroot=${serverip}:${rootpath}\0"			\
-	"ramargs=setenv bootargs root=/dev/ram rw\0"			\
-	"addip=setenv bootargs ${bootargs} "				\
-		"ip=${ipaddr}:${serverip}:${gatewayip}:${netmask}"	\
-		":${hostname}:${netdev}:off panic=1\0"			\
-	"addtty=setenv bootargs ${bootargs} console=ttyS0,${baudrate}\0"\
-	"net_nfs=tftp 200000 ${bootfile};"				\
-		"run nfsargs addip addtty;"				\
-		"bootm 200000\0"					\
-	"flash_nfs=run nfsargs addip addtty;"				\
-		"bootm ${kernel_addr}\0"				\
-	"flash_self=run ramargs addip addtty;"				\
-		"bootm ${kernel_addr} ${ramdisk_addr}\0"		\
-	"rootpath=/opt/eldk/ppc_4xx\0"					\
-	"bootfile=kilauea/uImage\0"					\
-	"kernel_addr=fc000000\0"					\
-	"ramdisk_addr=fc200000\0"					\
-	"initrd_high=30000000\0"					\
-	"load=tftp 200000 kilauea/u-boot.bin\0"				\
-	"update=protect off fffa0000 ffffffff;era fffa0000 ffffffff;"	\
-		"cp.b ${fileaddr} fffa0000 ${filesize};"		\
-		"setenv filesize;saveenv\0"				\
-	"upd=run load update\0"						\
-	"nload=tftp 200000 kilauea/u-boot-nand.bin\0"			\
-	"nupdate=nand erase 0 60000;nand write 200000 0 60000;"		\
-		"setenv filesize;saveenv\0"				\
-	"nupd=run nload nupdate\0"					\
 	"pciconfighost=1\0"						\
 	""
-#endif
 #define CONFIG_BOOTCOMMAND	"run flash_self"
 
 #define CONFIG_BOOTDELAY	5	/* autoboot after 5 seconds	*/
@@ -477,10 +439,8 @@
 
 #endif	/* __CONFIG_H */
 
-#ifdef USE_LIBFDT
 /* pass open firmware flat tree */
 #define CONFIG_OF_LIBFDT	1
 #define CONFIG_OF_BOARD_SETUP	1
 
 #define OF_CPU			"PowerPC,405EX@0"
-#endif