heads/modules/linux

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modules-y += linux
linux_version := 4.9.38
linux_dir := linux-$(linux_version)
linux_tar := linux-$(linux_version).tar.xz
linux_url := https://cdn.kernel.org/pub/linux/kernel/v4.x/$(linux_tar)
linux-4.9.38_hash := 76d789d87dd51d2fd58c095727171984fa4a992f5e25b9e3eb1e5fd5cd129074
linux_hash := $(linux-$(linux_version)_hash)
linux_board_dir := $(build)/$(linux_dir)/$(BOARD)
# input file in the heads config/ dir
# Allow board config to specialize Linux configuration if necessary
linux_config := $(or $(CONFIG_LINUX_CONFIG,linux.config))
# output file in the build dir
linux_config_file := $(BOARD)/.config
linux_configure := \
$(MAKE) \
CROSS_COMPILE="$(CROSS)" \
O="$(linux_board_dir)" \
oldconfig \
linux_output += $(build)/$(BOARD)/bzImage
# linux.intermediate: $(linux_output)
#linux_output += $(build)/$(BOARD)/modules.cpio
# qemu
linux_modules-$(CONFIG_LINUX_E1000) += drivers/net/ethernet/intel/e1000/e1000.ko
# x230
linux_modules-$(CONFIG_LINUX_E1000E) += drivers/net/ethernet/intel/e1000e/e1000e.ko
# Dell R630 ethernet and RAID controller
linux_modules-$(CONFIG_LINUX_IGB) += drivers/net/ethernet/intel/igb/igb.ko
linux_modules-$(CONFIG_LINUX_MEGARAID) += drivers/scsi/megaraid/megaraid_mm.ko
linux_modules-$(CONFIG_LINUX_MEGARAID) += drivers/scsi/megaraid/megaraid_sas.ko
linux_modules-$(CONFIG_LINUX_MEGARAID) += drivers/scsi/megaraid/megaraid_mbox.ko
# Intel s2600wf scsi controller
linux_modules-$(CONFIG_LINUX_SCSI_GDTH) += drivers/scsi/gdth.ko
linux_modules-$(CONFIG_LINUX_ATA) += drivers/ata/libata.ko
linux_modules-$(CONFIG_LINUX_AHCI) += drivers/ata/ahci.ko
linux_modules-$(CONFIG_LINUX_AHCI) += drivers/ata/ahci_platform.ko
linux_modules-$(CONFIG_LINUX_AHCI) += drivers/ata/libahci.ko
linux_modules-$(CONFIG_LINUX_AHCI) += drivers/ata/libahci_platform.ko
# Solarflare network card
linux_modules-$(CONFIG_LINUX_SFC) += drivers/net/ethernet/sfc/sfc.ko
linux_modules-$(CONFIG_LINUX_SFC) += drivers/net/mdio.ko
# Mellanox ConnectX-3 (winterfell)
linux_modules-$(CONFIG_LINUX_MLX4) += drivers/net/ethernet/mellanox/mlx4/mlx4_core.ko
linux_modules-$(CONFIG_LINUX_MLX4) += drivers/net/ethernet/mellanox/mlx4/mlx4_en.ko
# USB modules for both types of controllers
linux_modules-$(CONFIG_LINUX_USB) += drivers/usb/host/ehci-hcd.ko
linux_modules-$(CONFIG_LINUX_USB) += drivers/usb/host/ehci-pci.ko
linux_modules-$(CONFIG_LINUX_USB) += drivers/usb/host/xhci-hcd.ko
linux_modules-$(CONFIG_LINUX_USB) += drivers/usb/host/xhci-pci.ko
linux_modules-$(CONFIG_LINUX_USB) += drivers/usb/storage/usb-storage.ko
EXTRA_FLAGS := -fdebug-prefix-map=$(pwd)=heads -gno-record-gcc-switches
linux_target := \
O="$(linux_board_dir)" \
CROSS_COMPILE="$(CROSS)" \
AFLAGS_KERNEL="$(EXTRA_FLAGS)" \
CFLAGS_KERNEL="$(EXTRA_FLAGS)" \
CFLAGS_MODULE="$(EXTRA_FLAGS)" \
KBUILD_BUILD_USER="$(GIT_HASH)" \
KBUILD_BUILD_HOST=linuxboot \
KBUILD_BUILD_TIMESTAMP="1970-00-00" \
KBUILD_BUILD_VERSION=0 \
$(MAKE_JOBS) \
# We cross compile linux now
linux_depends := musl-cross
#
# Linux kernel module installation
#
# This is special cases since we have to do a special strip operation on
# the kernel modules to make them fit into the ROM image.
#
module_initrd_dir := $(shell mktemp -d)
module_initrd_lib_dir := $(module_initrd_dir)/lib/modules
FOO := $(shell mkdir -p "$(module_initrd_lib_dir)")
define linux_module =
# Each module depends on building the Linux kernel
$(linux_board_dir)/$1: linux.intermediate # $(build)/$(BOARD)/bzImage
# The cpio file will depend on every module
$(build)/$(BOARD)/modules.cpio: $(module_initrd_lib_dir)/$(notdir $1)
# Strip the modules when we install them so that they will be extra small
$(module_initrd_lib_dir)/$(notdir $1): $(linux_board_dir)/$1
$(call do,INSTALL-MODULE,$1, \
$(CROSS)strip \
--preserve-dates \
--strip-debug \
-o "$$@" \
"$$<" \
)
endef
$(call map,linux_module,$(linux_modules-y))
# We can't rebuild the module initrd until the kernel has been rebuilt
$(build)/$(BOARD)/modules.cpio: linux.intermediate
$(call do-cpio,$@,$(module_initrd_dir))
@$(RM) -rf "$(module_initrd_dir)"
# hack for the coreboot to find the linux kernel
$(build)/$(BOARD)/bzImage: linux.intermediate
$(build)/$(BOARD)/bzImage: $(linux_board_dir)/arch/x86/boot/bzImage
$(call do-copy,$<,$@)