fwup-gamma.conf

# NK Labs
# Firmware configuration file for image build

# Image layout
# +------------------------+
# | MBR                    |
# +------------------------+
# | Boot partition (FAT16) |
# | uImage                 |
# | u-boot.img             |
# | MLO                    |
# | uEnv.txt               |
# +------------------------+
# | Rootfs (EXT2/3)        |
# +------------------------+
# | Unused                 |
# +------------------------+
# | Unused                 |
# +------------------------+

# Firmware metadata
meta-product = "NK Labs Gamma board FW"
meta-description = "This image boots to Linux."
meta-version = "0.1"
meta-platform = "NK Labs Gamma"
meta-architecture = "arm"
meta-author = "Yvan Pearson"

# The boot partition
# 32 x 1024 byte x 1024 (32 MiB) / 512 = 65,536 sectors
define(BOOT_OFFSET, 1)
define(BOOT_COUNT, 65356)

# The rootfs partition
# 2 x 1024 byte x 1024 byte x 1024 (2 GiB) / 512 = 4,194,304 sectors
define(ROOTFS_OFFSET, 70000)
define(ROOTFS_COUNT, 4194304)
define(ROOTFS, "rootfs.ext2")

file-resource uImage {
    host-path = "uImage"
}
file-resource MLO {
    host-path = "MLO"
}
file-resource u-boot.img {
    host-path = "u-boot.img"
}
#file-resource uEnv.txt {
#    host-path = "${PROJECT_ROOT}/board/bbb/uEnv.txt"
#}
file-resource rootfs.ext2 {
    host-path = ${ROOTFS}
}

mbr mbr-a {
    partition 0 {
        block-offset = ${BOOT_OFFSET}
        block-count = ${BOOT_COUNT}
        type = 0xE # DOS 16-bit FAT, LBA-mapped
        boot = true
    }
    partition 1 {
        block-offset = ${ROOTFS_OFFSET}
        block-count = ${ROOTFS_COUNT}
        type = 0x83 # Linux native partition
    }
}

# This firmware task writes everything to the destination media
task buildimage {
    # Only match if not mounted
    require-unmounted-destination = true

    # Everything that gets written can be verified on the fly.
    # This speeds things up, since we don't care about detecting
    # errors before data gets written.
    verify-on-the-fly = true

    on-init {
        mbr_write(mbr-a)
        fat_mkfs(${BOOT_OFFSET}, ${BOOT_COUNT})
        fat_setlabel(${BOOT_OFFSET}, "boot")
    }

    on-resource uImage     { fat_write(${BOOT_OFFSET}, "uImage") }
    on-resource MLO        { fat_write(${BOOT_OFFSET}, "MLO") }
    on-resource u-boot.img { fat_write(${BOOT_OFFSET}, "u-boot.img") }
    #on-resource uEnv.txt  { fat_write(${BOOT_OFFSET}, "uEnv.txt") }

    on-resource rootfs.ext2 {
        # write to the first rootfs partition
        raw_write(${ROOTFS_OFFSET})
    }

    on-finish {
    }
}