linux-kernel-module-cheat/br2

# Custom packages
BR2_PACKAGE_KERNEL_MODULE=y
BR2_SAMPLE_PACKAGE=y

# Rootfs
BR2_TARGET_ROOTFS_CPIO=n
BR2_TARGET_ROOTFS_EXT2=y
BR2_TARGET_ROOTFS_INITRAMFS=n
BR2_TARGET_ROOTFS_EXT2_SIZE="512M"

# We were tempted to do this to disable S40network neatly,
# but that package also creates extra configuration files
# such as /etc/network/interfaces which we need. So we just
# remove the init.d file for now.
#BR2_PACKAGE_IFUPDOWN_SCRIPTS=n

BR2_CCACHE=y
# Otherwise our precious debug would break!
BR2_CCACHE_USE_BASEDIR=n
BR2_GCC_ENABLE_GRAPHITE=y
BR2_GCC_ENABLE_LTO=y
BR2_GCC_ENABLE_OPENMP=y
BR2_GLOBAL_PATCH_DIR="../global_patch_dir"
BR2_PACKAGE_BUSYBOX_CONFIG_FRAGMENT_FILES="../busybox_config_fragment"
BR2_PACKAGE_DHRYSTONE=y
BR2_PACKAGE_FILE=y
BR2_PACKAGE_OVERRIDE_FILE="../buildroot_override"
# For qemu-ga on guest. TODO: do something with it, and document it.
BR2_PACKAGE_QEMU=y
BR2_PACKAGE_STRACE=y
BR2_ROOTFS_OVERLAY="../rootfs_overlay"
BR2_ROOTFS_POST_BUILD_SCRIPT="../rootfs_post_build_script"
BR2_ROOTFS_POST_IMAGE_SCRIPT="../rootfs_post_image_script"
BR2_ROOTFS_USERS_TABLES="../user_table"
BR2_TOOLCHAIN_BUILDROOT_CXX=y
BR2_TOOLCHAIN_BUILDROOT_FORTRAN=y
BR2_TOOLCHAIN_BUILDROOT_WCHAR=y

# lscpu: TODO not installing?
BR2_PACKAGE_UTIL_LINUX=y
BR2_PACKAGE_UTIL_LINUX_BINARIES=y

# Host GDB
BR2_GDB_VERSION="7.11.1"
BR2_GDB_VERSION_7_10=n
BR2_GDB_VERSION_7_11=y
BR2_GDB_VERSION_7_12=n
BR2_PACKAGE_HOST_GDB=y
BR2_PACKAGE_HOST_GDB_PYTHON=y
BR2_PACKAGE_HOST_GDB_SIM=y
BR2_PACKAGE_HOST_GDB_TUI=y

# gdbserver
BR2_DEBUG_3=y
BR2_ENABLE_DEBUG=y
BR2_OPTIMIZE_0=y
BR2_PACKAGE_GDB=y
BR2_PTHREAD_DEBUG=y

# ftrace
BR2_PACKAGE_TRACE_CMD=y

# GPIO: lsgpio, gpio-event-mon, gpio-hammer
# Breask MIPS build in 2017-02:
# https://bugs.busybox.net/show_bug.cgi?id=10276
BR2_PACKAGE_LINUX_TOOLS=y
BR2_PACKAGE_LINUX_TOOLS_GPIO=y

# DTC
BR2_PACKAGE_DTC=y
BR2_PACKAGE_DTC_PROGRAMS=y
BR2_PACKAGE_HOST_DTC=y

# Provides setpci and a lspci more advanced than Busybox's
#
# setpci can read and write to PCI configuration registers.
#
# Read is possible from Linux with:
#
#     hexdump /sys/bus/pci/devices/0000:00:05.0/config
#
# and /dev/mem can of course do both reads and writes,
# but setpci provies nice human readable register names, e.g.:
#
#     setpci --dumpregs
#
# then and then get the values with either bus or device id:
#
#     setpci -s 0000:00:05.0 BASE_ADDRESS_0
#     setpci -d 1234:11e9 BASE_ADDRESS_0
#
# Note however that BASE_ADDRESS_0 also appears when you do:
#
#     lspci -v
#
# Then you can try messing with that address with:
#
#     devmem2 0xfeb52000 w 0x12345678
#
# which for our pci_min device fires interrupts.
#
BR2_PACKAGE_PCIUTILS=y