[source] ar71xx: image: add ROOTFS_SIZE to DEVICE_VARS

[LEDE Commits]

pepe2k pushed a commit to source.git, branch master:
https://git.lede-project.org/e83cac1a8fe11a8fbb0980de7eec225a02fd2b12

commit e83cac1a8fe11a8fbb0980de7eec225a02fd2b12
Author: Piotr Dymacz <pepe2k at gmail.com>
AuthorDate: Wed May 31 20:02:36 2017 +0200

    ar71xx: image: add ROOTFS_SIZE to DEVICE_VARS
    
    Also use ROOTFS_SIZE variable in place of static values.
    
    Signed-off-by: Piotr Dymacz <pepe2k at gmail.com>
---
 target/linux/ar71xx/image/generic.mk | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/target/linux/ar71xx/image/generic.mk b/target/linux/ar71xx/image/generic.mk
index 158d566..e9de7ac 100644
--- a/target/linux/ar71xx/image/generic.mk
+++ b/target/linux/ar71xx/image/generic.mk
@@ -1,4 +1,4 @@
-DEVICE_VARS += DAP_SIGNATURE NETGEAR_BOARD_ID NETGEAR_HW_ID NETGEAR_KERNEL_MAGIC SEAMA_SIGNATURE
+DEVICE_VARS += DAP_SIGNATURE NETGEAR_BOARD_ID NETGEAR_HW_ID NETGEAR_KERNEL_MAGIC ROOTFS_SIZE SEAMA_SIGNATURE
 
 define Build/mkbuffaloimg
 	$(STAGING_DIR_HOST)/bin/mkbuffaloimg -B $(BOARDNAME) \
@@ -268,11 +268,12 @@ define Device/mr12
   DEVICE_TITLE := Meraki MR12
   DEVICE_PACKAGES := kmod-spi-gpio
   BOARDNAME = MR12
+  ROOTFS_SIZE := 13440k
   IMAGE_SIZE = 15680k
   MTDPARTS = spi0.0:256k(u-boot)ro,256k(u-boot-env)ro,13440k(rootfs),2240k(kernel),64k(mac),128k(art)ro,15680k at 0x80000(firmware)
   IMAGE/kernel.bin = append-kernel
   IMAGE/rootfs.bin = append-rootfs | pad-rootfs
-  IMAGE/sysupgrade.bin = append-rootfs | pad-rootfs | pad-to 13440k | append-kernel | check-size $$$$(IMAGE_SIZE)
+  IMAGE/sysupgrade.bin = append-rootfs | pad-rootfs | pad-to $$$$(ROOTFS_SIZE) | append-kernel | check-size $$$$(IMAGE_SIZE)
   IMAGES := kernel.bin rootfs.bin sysupgrade.bin
 endef
 TARGET_DEVICES += mr12
@@ -281,11 +282,12 @@ define Device/mr16
   DEVICE_TITLE := Meraki MR16
   DEVICE_PACKAGES := kmod-spi-gpio
   BOARDNAME = MR16
+  ROOTFS_SIZE := 13440k
   IMAGE_SIZE = 15680k
   MTDPARTS = spi0.0:256k(u-boot)ro,256k(u-boot-env)ro,13440k(rootfs),2240k(kernel),64k(mac),128k(art)ro,15680k at 0x80000(firmware)
   IMAGE/kernel.bin = append-kernel
   IMAGE/rootfs.bin = append-rootfs | pad-rootfs
-  IMAGE/sysupgrade.bin = append-rootfs | pad-rootfs | pad-to 13440k | append-kernel | check-size $$$$(IMAGE_SIZE)
+  IMAGE/sysupgrade.bin = append-rootfs | pad-rootfs | pad-to $$$$(ROOTFS_SIZE) | append-kernel | check-size $$$$(IMAGE_SIZE)
   IMAGES := kernel.bin rootfs.bin sysupgrade.bin
 endef
 TARGET_DEVICES += mr16
@@ -294,9 +296,10 @@ define Device/dr344
   DEVICE_TITLE := Wallys DR344
   BOARDNAME = DR344
   KERNEL_SIZE := 1408k
+  ROOTFS_SIZE := 6336k
   IMAGE_SIZE = 7744k
   MTDPARTS = spi0.0:256k(u-boot)ro,64k(u-boot-env)ro,6336k(rootfs),1408k(kernel),64k(nvram),64k(art)ro,7744k at 0x50000(firmware)
-  IMAGE/sysupgrade.bin = append-rootfs | pad-rootfs | pad-to 6336k | append-kernel | check-size $$$$(IMAGE_SIZE)
+  IMAGE/sysupgrade.bin = append-rootfs | pad-rootfs | pad-to $$$$(ROOTFS_SIZE) | append-kernel | check-size $$$$(IMAGE_SIZE)
 endef
 TARGET_DEVICES += dr344