bcm53xx: always use 4 MiB for TRX kernel partition to simplify upgrades

[openwrt.git] / target / linux / bcm53xx / image / Makefile

diff --git a/target/linux/bcm53xx/image/Makefile b/target/linux/bcm53xx/image/Makefile
index 4720aaf..b3f2cd8 100644 (file)
--- a/target/linux/bcm53xx/image/Makefile
+++ b/target/linux/bcm53xx/image/Makefile
@@ -31,12 +31,14 @@ define Build/mkfs/squashfs
 endef
 
 define Build/trx-nand
+       # kernel: always use 4 MiB (-28 B or TRX header) to allow upgrades even
+       #         if it grows up between releases
        $(STAGING_DIR_HOST)/bin/trx \
                -o $@ \
                -m 33554432 \
-               -f $(word 1,$^) \
-               -a 0x20000 -f $(KDIR)/root-block-0x20000-min-0x800.ubi \
-               -a 0x20000 -A $(KDIR)/fs_mark
+               -f $(word 1,$^) -a 0x20000 -b 0x400000 \
+               -f $(KDIR)/root-block-0x20000-min-0x800.ubi -a 0x20000 \
+               -A $(KDIR)/fs_mark
 endef
 
 define Build/netgear-chk