To compile the linux kernel for the GoFlex Home, you must have an ARM cross compiler installed. I use the CodeSourcery G++ Lite 2011.03-42 for ARM EABI. It is assumed the cross compiler has been added to your path.
The bootloader used on the GoFlex Home is u-boot. u-boot has a special image format called uImage. It includes parameters such as descriptions, the machine/architecture type, compression type, load address, checksums etc. To make these images, you need to have a mkimage tool that comes part of the u-Boot distribution. Download u-boot, make and install the u-boot tools:
wget ftp://ftp.denx.de/pub/u-boot/u-boot-latest.tar.bz2 tar -xjf u-boot-latest.tar.bz2 cd into u-boot directory make tools sudo install tools/mkimage /usr/local/bin
The mainline kernel is yet to include hardware options for the GoFlex Home. However the developers over at Arch Linux Arm have this sorted with a patch.
Download the linux kernel and patch:
# wget https://raw.github.com/archlinuxarm/PKGBUILDs/master/core/linux/archlinuxarm.patch # wget http://www.kernel.org/pub/linux/kernel/v3.0/linux-3.1.10.tar.bz2 # tar -xjf linux-3.1.10.tar.bz2 # cd linux-3.1.10 # patch -p1 < ../archlinuxarm.patch patching file arch/arm/mach-kirkwood/dockstar-setup.c patching file arch/arm/mach-kirkwood/goflexhome-setup.c patching file arch/arm/mach-kirkwood/goflexnet-setup.c patching file arch/arm/mach-kirkwood/guruplug-setup.c patching file arch/arm/mach-kirkwood/iconnect-setup.c patching file arch/arm/mach-kirkwood/Kconfig patching file arch/arm/mach-kirkwood/Makefile patching file arch/arm/mach-kirkwood/mpp.h patching file arch/arm/mach-kirkwood/pogoplugv4-setup.c patching file arch/arm/mach-kirkwood/sheevaplug-setup.c patching file arch/arm/tools/mach-types
Make and run the configuration menu:
# make ARCH=arm kirkwood_defconfig # make ARCH=arm menuconfig
Enable the following Options:
System Type -> Marvell Kirkwood Implementations --> Seagate GoFlex Home Device Drivers --> Memory Technology Devices (MTD) --> Enable UBI - Unsorted Block Images File Systems --> Miscellaneous Filesystems --> UBIFS file system support File Systems --> Miscellaneous Filesystems --> LZO compression support File Systems --> Miscellaneous Filesystems --> ZLIB compression support File Systems --> DOS/FAT/NT Filesystems --> NTFS file system support File Systems --> DOS/FAT/NT Filesystems --> NTFS write support File Systems --> The Extended 4 (ext4) filesystem Device Drivers --> Block Devices --> RAM block device support (reflashing) set CONFIG_BLK_DEV_INITRD in .config
and make the kernel:
# make ARCH=arm CROSS_COMPILE=arm-none-eabi- uImage
My Seagate GoFlex Home expects a machine ID of 527. However the kernel sources currently have the machine ID for the GoFlex Home as 3338.
Edit include/generated/mach-types.h and change :
#define MACH_TYPE_GOFLEXHOME 3338
#define MACH_TYPE_GOFLEXHOME 527
Now build the modules and install them to a suitable path:
make ARCH=arm CROSS_COMPILE=arm-none-eabi- modules make ARCH=arm CROSS_COMPILE=arm-none-eabi INSTALL_MOD_PATH=/home/cpeacock/export/rootfs-f12 modules_install