at91: separate MKUBIFS opts to defaults in the sub target

Instead of applying global defaults based on selected board, transition
to using a per board setting for UBIFS and UBINIZE.

Signed-off-by: Ben Whitten <ben.whitten@gmail.com>

target/linux/at91/image/Makefile

@@ -11,29 +11,19 @@ KERNEL_LOADADDR := 0x20008000
 
 ifeq ($(SUBTARGET),legacy)
 include ./legacy.mk
-UBIFS_OPTS := -m 2048 -e 126KiB -c 2048
 endif
-
 ifeq ($(SUBTARGET),sama5)
 include ./sama5.mk
-ifeq ($(TARGET_DEVICES),at91-sama5d4_xplained)
-  UBIFS_OPTS := -e 0x3e000 -c 2082 -m 0x1000 -x lzo
-  UBINIZE_OPTS := -m 0x1000 -p 0x40000
-else
-  UBIFS_OPTS := -m 2048 -e 124KiB -c 2048
-endif
 endif
 
 define Device/Default
+  $(Device/default-nand)
   PROFILES := Default
   FILESYSTEMS := squashfs ubifs
   DEVICE_DTS := $(1)
   KERNEL_NAME := zImage
   KERNEL_SIZE := 4096k
   KERNEL := kernel-bin | append-dtb | lzma | uImage lzma
-  BLOCKSIZE := 128k
-  PAGESIZE := 2048
-  SUBPAGESIZE := 512
   DTB_SIZE :=
 endef
 

target/linux/at91/image/legacy.mk

@@ -1,3 +1,10 @@
+define Device/default-nand
+  BLOCKSIZE := 128k
+  PAGESIZE := 2048
+  SUBPAGESIZE := 512
+  MKUBIFS_OPTS := -m $$(PAGESIZE) -e 126KiB -c 2048
+endef
+
 define Device/at91sam9263ek
   $(Device/evaluation-dtb)
   DEVICE_TITLE := Atmel AT91SAM9263-EK

target/linux/at91/image/sama5.mk

@@ -1,8 +1,14 @@
+define Device/default-nand
+  BLOCKSIZE := 128k
+  PAGESIZE := 2048
+  SUBPAGESIZE := 2048
+  MKUBIFS_OPTS := -m $$(PAGESIZE) -e 124KiB -c 2048
+endef
+
 define Device/at91-sama5d3_xplained
   $(Device/evaluation-dtb)
   DEVICE_TITLE := Microchip(Atmel AT91) SAMA5D3 Xplained
   KERNEL_SIZE := 6144k
-  SUBPAGESIZE := 2048
 endef
 TARGET_DEVICES += at91-sama5d3_xplained
 
@@ -10,7 +16,6 @@ define Device/at91-sama5d2_xplained
   $(Device/evaluation-dtb)
   DEVICE_TITLE := Microchip(Atmel AT91) SAMA5D2 Xplained
   KERNEL_SIZE := 6144k
-  SUBPAGESIZE := 2048
 endef
 TARGET_DEVICES += at91-sama5d2_xplained
 
@@ -18,6 +23,9 @@ define Device/at91-sama5d4_xplained
   $(Device/evaluation-dtb)
   DEVICE_TITLE := Microchip(Atmel AT91) SAMA5D4 Xplained
   KERNEL_SIZE := 6144k
+  BLOCKSIZE := 256k
+  PAGESIZE := 4096
   SUBPAGESIZE := 2048
+  MKUBIFS_OPTS := -m $$(PAGESIZE) -e 248KiB -c 2082 -x lzo
 endef
 TARGET_DEVICES += at91-sama5d4_xplained