mirror of
https://github.com/linuxboot/heads.git
synced 2024-12-22 14:22:26 +00:00
f4e25dd216
This reduces the amount of noise in the Linux kernel config files by only storing the differences from the stock configuration. It adds a new makefile target 'linux.saveconfig' to convert the build tree's .config file into config/linux-linuxboot.config.
166 lines
6.1 KiB
Plaintext
166 lines
6.1 KiB
Plaintext
modules-y += linux
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linux_version := 4.14.62
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linux_base_dir := linux-$(linux_version)
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# TODO: fixup the patch process
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# input file in the heads config/ dir
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# Allow board config to specialize Linux configuration if necessary
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linux_kconfig := $(or $(CONFIG_LINUX_CONFIG),config/linux.config)
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# Output directory for the Linux kernel build is based on the
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# configuration file name, not the board name
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linux_dir := $(linux_base_dir)/$(notdir $(basename $(linux_kconfig)))
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linux_tar := linux-$(linux_version).tar.xz
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linux_url := https://cdn.kernel.org/pub/linux/kernel/v4.x/$(linux_tar)
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linux-4.9.38_hash := 76d789d87dd51d2fd58c095727171984fa4a992f5e25b9e3eb1e5fd5cd129074
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linux-4.9.80_hash := 9e2e83ccc0afc3f23340ed5e58a35d8c6300a7c58aa98ca913848de41226477b
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linux-4.14.62_hash := 51ca4d7e8ee156dc0f19bc7768915cfae41dbb0b4f251e4fa8b178c5674c22ab
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linux_hash := $(linux-$(linux_version)_hash)
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# Ensure that touching the config file will force a reconfig/rebuild
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$(build)/$(linux_dir)/.configured: $(linux_kconfig)
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linux_configure := \
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mkdir -p "$(build)/$(linux_dir)" \
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&& cp "$(pwd)/$(linux_kconfig)" "$(build)/$(linux_dir)/.config" \
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&& $(MAKE) -C .. \
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CROSS_COMPILE="$(CROSS)" \
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O="$(build)/$(linux_dir)" \
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olddefconfig \
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linux_output += arch/x86/boot/bzImage
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# qemu
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linux_modules-$(CONFIG_LINUX_E1000) += drivers/net/ethernet/intel/e1000/e1000.ko
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# x230 and winterfell
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linux_modules-$(CONFIG_LINUX_E1000E) += drivers/net/ethernet/intel/e1000e/e1000e.ko
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# Dell R630 ethernet and RAID controller
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linux_modules-$(CONFIG_LINUX_IGB) += drivers/net/ethernet/intel/igb/igb.ko
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linux_modules-$(CONFIG_LINUX_MEGARAID) += drivers/scsi/megaraid/megaraid_mm.ko
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linux_modules-$(CONFIG_LINUX_MEGARAID) += drivers/scsi/megaraid/megaraid_sas.ko
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linux_modules-$(CONFIG_LINUX_MEGARAID) += drivers/scsi/megaraid/megaraid_mbox.ko
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# Intel s2600wf scsi controller
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linux_modules-$(CONFIG_LINUX_SCSI_GDTH) += drivers/scsi/gdth.ko
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linux_modules-$(CONFIG_LINUX_ATA) += drivers/ata/libata.ko
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linux_modules-$(CONFIG_LINUX_AHCI) += drivers/ata/ahci.ko
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#linux_modules-$(CONFIG_LINUX_AHCI) += drivers/ata/ahci_platform.ko
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linux_modules-$(CONFIG_LINUX_AHCI) += drivers/ata/libahci.ko
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#linux_modules-$(CONFIG_LINUX_AHCI) += drivers/ata/libahci_platform.ko
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# Solarflare network card
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linux_modules-$(CONFIG_LINUX_SFC) += drivers/net/ethernet/sfc/sfc.ko
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linux_modules-$(CONFIG_LINUX_SFC) += drivers/net/mdio.ko
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# Mellanox ConnectX-3 (winterfell)
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linux_modules-$(CONFIG_LINUX_MLX4) += drivers/net/ethernet/mellanox/mlx4/mlx4_core.ko
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linux_modules-$(CONFIG_LINUX_MLX4) += drivers/net/ethernet/mellanox/mlx4/mlx4_en.ko
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# Broadcom 57302 (25g) for Tioga Pass
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linux_modules-$(CONFIG_LINUX_BCM) += drivers/net/ethernet/broadcom/bnxt/bnxt_en.ko
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# USB modules for both types of controllers
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# older boards also need ohci and uhci
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linux_modules-$(CONFIG_LINUX_USB_COMPANION_CONTROLLER) += drivers/usb/host/uhci-hcd.ko
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linux_modules-$(CONFIG_LINUX_USB_COMPANION_CONTROLLER) += drivers/usb/host/ohci-hcd.ko
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linux_modules-$(CONFIG_LINUX_USB_COMPANION_CONTROLLER) += drivers/usb/host/ohci-pci.ko
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linux_modules-$(CONFIG_LINUX_USB) += drivers/usb/host/ehci-hcd.ko
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linux_modules-$(CONFIG_LINUX_USB) += drivers/usb/host/ehci-pci.ko
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linux_modules-$(CONFIG_LINUX_USB) += drivers/usb/host/xhci-hcd.ko
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linux_modules-$(CONFIG_LINUX_USB) += drivers/usb/host/xhci-pci.ko
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linux_modules-$(CONFIG_LINUX_USB) += drivers/usb/storage/usb-storage.ko
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# NVMe driver for winterfell and other servers
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linux_modules-$(CONFIG_LINUX_NVME) += drivers/nvme/host/nvme.ko
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linux_modules-$(CONFIG_LINUX_NVME) += drivers/nvme/host/nvme-core.ko
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# ME drivers for talking the the management engine
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linux_modules-$(CONFIG_LINUX_MEI) += drivers/misc/mei/mei.ko
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linux_modules-$(CONFIG_LINUX_MEI) += drivers/misc/mei/mei-me.ko
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EXTRA_FLAGS := -fdebug-prefix-map=$(pwd)=heads -gno-record-gcc-switches
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linux_target := \
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O="$(build)/$(linux_dir)" \
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CROSS_COMPILE="$(CROSS)" \
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AFLAGS_KERNEL="$(EXTRA_FLAGS)" \
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CFLAGS_KERNEL="$(EXTRA_FLAGS)" \
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CFLAGS_MODULE="$(EXTRA_FLAGS)" \
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KBUILD_BUILD_USER=$(notdir $(linux_kconfig)) \
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KBUILD_BUILD_HOST=linuxboot \
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KBUILD_BUILD_TIMESTAMP="1970-00-00" \
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KBUILD_BUILD_VERSION=0 \
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$(MAKE_JOBS) \
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# We cross compile linux now
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linux_depends := musl-cross
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#
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# Linux kernel module installation
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#
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# This is special cases since we have to do a special strip operation on
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# the kernel modules to make them fit into the ROM image.
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#
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module_initrd_dir := $(shell mktemp -d)
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module_initrd_lib_dir := $(module_initrd_dir)/lib/modules
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FOO := $(shell mkdir -p "$(module_initrd_lib_dir)")
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define linux_module =
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# Each module depends on building the Linux kernel
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$(build)/$(linux_dir)/$1: $(build)/$(linux_dir)/$(linux_output)
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# The cpio file will depend on every module
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$(build)/$(BOARD)/modules.cpio: $(module_initrd_lib_dir)/$(notdir $1)
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# Strip the modules when we install them so that they will be extra small
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$(module_initrd_lib_dir)/$(notdir $1): $(build)/$(linux_dir)/$1
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$(call do,INSTALL-MODULE,$1, \
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$(CROSS)strip \
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--preserve-dates \
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--strip-debug \
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-o "$$@" \
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"$$<" \
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)
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endef
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$(call map,linux_module,$(linux_modules-y))
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# We can't rebuild the module initrd until the kernel has been rebuilt
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$(build)/$(BOARD)/modules.cpio: $(build)/$(linux_dir)/.build
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$(call do-cpio,$@,$(module_initrd_dir))
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@$(RM) -rf "$(module_initrd_dir)"
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# The output of the linux.intermediate is the bzImage in the
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# linus build directory. We need to copy it into our board
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# specific directory for ease of locating it later.
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$(build)/$(BOARD)/bzImage: $(build)/$(linux_dir)/.build
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$(call do-copy,$(dir $<)/$(linux_output),$@)
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@touch $@ # force a timestamp update
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# menuconfig target allows us to easily reconfigure this Linux kernel
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# Afterwars make linux.saveconfig to generate a minimal config from it
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linux.menuconfig:
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$(MAKE) \
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-C "$(build)/$(linux_base_dir)" \
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O="$(build)/$(linux_dir)" \
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menuconfig \
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# The config file in the repo is stored as a "defconfig" format
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# which only includes the options that have changed from the defaults.
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linux.saveconfig:
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$(MAKE) \
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-C "$(build)/$(linux_base_dir)" \
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O="$(build)/$(linux_dir)" \
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savedefconfig
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mv "$(build)/$(linux_dir)/defconfig" "$(pwd)/$(linux_kconfig)"
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