diff options
Diffstat (limited to 'target/linux/ar71xx/image')
| -rw-r--r-- | target/linux/ar71xx/image/Makefile | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/target/linux/ar71xx/image/Makefile b/target/linux/ar71xx/image/Makefile index 15cf2c6b8b..29e5064909 100644 --- a/target/linux/ar71xx/image/Makefile +++ b/target/linux/ar71xx/image/Makefile @@ -2055,6 +2055,39 @@ ifdef CONFIG_PACKAGE_uboot-ar71xx-nbg460n_550n_550nh endef endif +define Device/NBG6616 + BOARDNAME = NBG6616 + KERNEL_SIZE = 2048k + IMAGE_SIZE = 15323k + MTDPARTS = spi0.0:192k(u-boot)ro,64k(env)ro,64k(RFdata)ro,384k(zyxel_rfsd),384k(romd),64k(header),2048k(kernel),13184k(rootfs),15232k@0x120000(firmware) + CMDLINE += mem=128M + IMAGES := sysupgrade.bin + KERNEL := kernel-bin | patch-cmdline | lzma | uImage lzma | jffs2 boot/vmlinux.lzma.uImage + IMAGE/sysupgrade.bin = append-kernel $$$$(KERNEL_SIZE) | append-rootfs | pad-rootfs | check-size $$$$(IMAGE_SIZE) + # We cannot currently build a factory image. It is the sysupgrade image + # prefixed with a header (which is actually written into the MTD device). + # The header is 2kiB and is filled with 0xff. The format seems to be: + # 2 bytes: 0x0000 + # 2 bytes: checksum of the data partition (big endian) + # 4 bytes: length of the contained image file (big endian) + # 32 bytes: Firmware Version string (NUL terminated, 0xff padded) + # 2 bytes: 0x0000 + # 2 bytes: checksum over the header partition (big endian) + # 32 bytes: Model (e.g. "NBG6616", NUL termiated, 0xff padded) + # rest: 0xff padding + # + # The checksums are calculated by adding up all bytes and if a 16bit + # overflow occurs, one is added and the sum is masked to 16 bit: + # csum = csum + databyte; if (csum > 0xffff) { csum += 1; csum &= 0xffff }; + # Should the file have an odd number of bytes then the byte len-0x800 is + # used additionally. + # The checksum for the header is calcualted over the first 2048 bytes with + # the firmware checksum as the placeholder during calculation. + # + # The header is padded with 0xff to the erase block size of the device. +endef + +TARGET_DEVICES += NBG6616 define Image/Build/ZyXELNAND/buildkernel $(eval kernelsize=$(call mtdpartsize,kernel,$(5))) |