arm/km: enable FDT for km_kirwkood

This consists of:
a) Defining the addresses, enabling fdtsupport [arm]
b) Defining "cramfsloadfdt"  [arm,powerpc => common]
c) Adding the FDT address to bootm [arm,powerpc => common]
d) Defining "tftpfdt" in ramfs-,develop- [arm,powerpc >= common]

This should work with 3.10 kernels, whether loaded through TFTP
(with rootfs either through NFS or TFTP-ramfs) or from the NAND.

The machid was left unchanged, this should keep compatibility with both
older and newer kernels.

Signed-off-by: Valentin Longchamp <valentin.longchamp@keymile.com>
Signed-off-by: Gerlando Falauto <gerlando.falauto@keymile.com>
Signed-off-by: Holger Brunck <holger.brunck@keymile.com>
Acked-by: Valentin Longchamp <valentin.longchamp@keymile.com>

board/keymile/scripts/develop-arm.txt

 setup_debug_env=tftpboot 0x200000 scripts/develop-common.txt && env import -t 0x200000 ${filesize} && run configure
-tftpfdt=true

board/keymile/scripts/develop-common.txt

@@ -3,6 +3,7 @@ bootcmd=run ${subbootcmds}
 configure=run set_uimage; km_setboardid && saveenv && reset
 subbootcmds=tftpfdt tftpkernel nfsargs add_default boot
 nfsargs=setenv bootargs root=/dev/nfs rw nfsroot=${serverip}:${toolchain}/${arch}
+tftpfdt=tftpboot ${fdt_addr_r} ${hostname}/${hostname}.dtb
 tftpkernel=tftpboot ${load_addr_r} ${hostname}/${uimage}
 toolchain=/opt/eldk
 rootfssize=0

board/keymile/scripts/develop-ppc_82xx.txt

 setup_debug_env=tftpboot 0x200000 scripts/develop-common.txt && env import -t 0x200000 ${filesize} && run configure
-tftpfdt=tftpboot ${fdt_addr_r} ${hostname}/${hostname}.dtb

board/keymile/scripts/develop-ppc_8xx.txt

 setup_debug_env=tftpboot 0x200000 scripts/develop-common.txt && env import -t 0x200000 ${filesize} && run configure
-tftpfdt=tftpboot ${fdt_addr_r} ${hostname}/${hostname}.dtb

board/keymile/scripts/ramfs-arm.txt

 setup_debug_env=tftpboot 0x200000 scripts/ramfs-common.txt && env import -t 0x200000 ${filesize} && run configure
-tftpfdt=true

board/keymile/scripts/ramfs-common.txt

@@ -7,6 +7,7 @@ nfsargs=setenv bootargs root=/dev/nfs rw nfsroot=${serverip}:${rootpath}
 configure=run set_uimage; km_setboardid && saveenv && reset
 rootfsfile=${hostname}/rootfsImage
 setrootfsaddr=setexpr value ${pnvramaddr} - ${rootfssize} && setenv rootfsaddr 0x${value}
+tftpfdt=tftpboot ${fdt_addr_r} ${hostname}/${hostname}.dtb
 tftpkernel=tftpboot ${load_addr_r} ${hostname}/${uimage}
 tftpramfs=tftpboot ${rootfsaddr} ${hostname}/rootfsImage
 set_uimage=printenv uimage || setenv uimage uImage

board/keymile/scripts/ramfs-ppc_82xx.txt

 setup_debug_env=tftpboot 0x200000 scripts/ramfs-common.txt && env import -t 0x200000 ${filesize} && run configure
-tftpfdt=tftpboot ${fdt_addr_r} ${hostname}/${hostname}.dtb

board/keymile/scripts/ramfs-ppc_8xx.txt

 setup_debug_env=tftpboot 0x200000 scripts/ramfs-common.txt && env import -t 0x200000 ${filesize} && run configure
-tftpfdt=tftpboot ${fdt_addr_r} ${hostname}/${hostname}.dtb

include/configs/km/keymile-common.h

@@ -220,6 +220,7 @@
 	CONFIG_KM_DEF_ENV_FLASH_BOOT					\
 	CONFIG_KM_DEF_ENV_CONSTANTS					\
 	"altbootcmd=run bootcmd\0"					\
+	"boot=bootm ${load_addr_r} - ${fdt_addr_r}\0"			\
 	"bootcmd=km_checkbidhwk &&  "					\
 		"setenv bootcmd \'if km_checktestboot; then; "          \
 				"setenv boot_bank ${test_bank}; else; " \
@@ -229,6 +230,10 @@
 			"run ${subbootcmds}; reset\' && "		\
 		"saveenv && saveenv && boot\0"				\
 	"bootlimit=3\0"							\
+	"cramfsloadfdt="						\
+		"cramfsload ${fdt_addr_r} "				\
+		"fdt_0x${IVM_BoardId}_0x${IVM_HWKey}.dtb\0"		\
+	"fdt_addr_r="__stringify(CONFIG_KM_FDT_ADDR) "\0"		\
 	"init=/sbin/init-overlay.sh\0"					\
 	"load_addr_r="__stringify(CONFIG_KM_KERNEL_ADDR) "\0"		\
 	"load=tftpboot ${load_addr_r} ${u-boot}\0"			\

include/configs/km/km-powerpc.h

@@ -70,11 +70,6 @@
 #define CONFIG_KM_DEF_BOOT_ARGS_CPU		""
 
 #define CONFIG_KM_DEF_ENV_CPU						\
-	"boot=bootm ${load_addr_r} - ${fdt_addr_r}\0"			\
-	"cramfsloadfdt="						\
-		"cramfsload ${fdt_addr_r} "				\
-		"fdt_0x${IVM_BoardId}_0x${IVM_HWKey}.dtb\0"		\
-	"fdt_addr_r=" __stringify(CONFIG_KM_FDT_ADDR) "\0"		\
 	"u-boot="__stringify(CONFIG_HOSTNAME) "/u-boot.bin\0"		\
 	"update="							\
 		"protect off " __stringify(BOOTFLASH_START) " +${filesize} && "\

include/configs/km/km_arm.h

@@ -70,7 +70,8 @@
 #define CONFIG_KM_PHRAM		0x17F000
 
 #define CONFIG_KM_CRAMFS_ADDR	0x2400000
-#define CONFIG_KM_KERNEL_ADDR	0x2000000	/* 4096KBytes */
+#define CONFIG_KM_KERNEL_ADDR	0x2000000	/* 3098KBytes */
+#define CONFIG_KM_FDT_ADDR	0x23E0000	/*  128KBytes */
 
 /* architecture specific default bootargs */
 #define CONFIG_KM_DEF_BOOT_ARGS_CPU					\
@@ -78,8 +79,6 @@
 		" boardid=0x${IVM_BoardId} hwkey=0x${IVM_HWKey}"
 
 #define CONFIG_KM_DEF_ENV_CPU						\
-	"boot=bootm ${load_addr_r} - -\0"				\
-	"cramfsloadfdt=true\0"						\
 	"u-boot="__stringify(CONFIG_HOSTNAME) "/u-boot.kwb\0"		\
 	CONFIG_KM_UPDATE_UBOOT						\
 	""
@@ -87,6 +86,9 @@
 #define CONFIG_SKIP_LOWLEVEL_INIT	/* disable board lowlevel_init */
 #define CONFIG_MISC_INIT_R
 
+/* Pass open firmware flat tree */
+#define CONFIG_OF_LIBFDT
+
 /*
  * NS16550 Configuration
  */