## SPDX-License-Identifier: GPL-2.0-only

if PAYLOAD_LINUXBOOT

choice
	prompt "Architecture"
	depends on LINUXBOOT_COMPILE_KERNEL || LINUXBOOT_BUILD_INITRAMFS
	default LINUXBOOT_X86_64

config LINUXBOOT_X86_64
	bool "x86_64"
	depends on ARCH_X86
	help
	  AMD64 kernel and initramfs

config LINUXBOOT_X86
	bool "x86"
	depends on ARCH_X86
	help
	  X86 kernel and initramfs

config LINUXBOOT_ARM
	bool "arm64"
	depends on ARCH_ARM
	select PAYLOAD_FIT_SUPPORT
	help
	  arm kernel and initramfs

config LINUXBOOT_ARM64
	bool "arm64"
	depends on ARCH_ARM64
	select PAYLOAD_FIT_SUPPORT
	help
	  AARCH64 kernel and initramfs

config LINUXBOOT_RISCV_RV32
	bool "RISC-V"
	depends on ARCH_RISCV_RV32
	select PAYLOAD_FIT_SUPPORT
	help
	  RISC-V kernel and initramfs

config LINUXBOOT_RISCV_RV64
	bool "RISC-V"
	depends on ARCH_RISCV_RV64
	select PAYLOAD_FIT_SUPPORT
	help
	  RISC-V kernel and initramfs

endchoice

comment "Linux kernel"

config LINUXBOOT_COMPILE_KERNEL
	bool "Compile kernel"
	default n

config LINUXBOOT_KERNEL_PATH
	string "Path to kernel"
	default ""
	depends on !LINUXBOOT_COMPILE_KERNEL
	help
	  The kernel path is either and absolute path or relative to the
	  LinuxBoot directory

if LINUXBOOT_COMPILE_KERNEL

config LINUXBOOT_CROSS_COMPILE
	bool "cross compiler"
	default n if LINUXBOOT_X86_64 # currently coreboots cross toolchain cannot build Linux
	default y
	help
	  Enable this option if you want to compile Linux using a cross compiler.
	  The coreboot toolchain also counts as a cross toolchain.

config LINUXBOOT_CROSS_COMPILE_PATH
	string "cross compiler"
	depends on LINUXBOOT_CROSS_COMPILE
	default "" # e.g. "aarch64-linux-gnu-"
	help
	  Choose a custom cross compiler toolchain to use.
	  The cross toolchain of coreboot will be used if this option is left empty.
	  If not left empty, it should contain a path to a cross toolchain that is
	  capable of compiling Linux. It can be useful if you don't want to use the
	  coreboot toolchain or experience problems using it for building Linux.

config LINUXBOOT_KERNEL_VERSION
	string "kernel version"
	default "6.3"
	help
	  Choose the Linux kernel version number. (x.x.x)
	  Release candidate kernels (rc) are currently are not supported.

config LINUXBOOT_KERNEL_CONFIGFILE
	string "Config file path"
	default "i386/defconfig"     if LINUXBOOT_X86
	default "x86_64/defconfig"   if LINUXBOOT_X86_64
	default "arm64/defconfig"    if LINUXBOOT_ARM64
	default "riscv/defconfig-32" if LINUXBOOT_RISCV_RV32
	default "riscv/defconfig-64" if LINUXBOOT_RISCV_RV64
	help
	  Path to the kernel configuration file.

	  Note: this can be a defconfig file or a complete .config file.

choice
	prompt "Kernel binary format"
	default LINUXBOOT_KERNEL_BZIMAGE if LINUXBOOT_X86 || LINUXBOOT_X86_64
	default LINUXBOOT_KERNEL_UIMAGE if LINUXBOOT_ARM64 || LINUXBOOT_RISCV_RV32 || LINUXBOOT_RISCV_RV64

config LINUXBOOT_KERNEL_BZIMAGE
	bool "bzImage"
	depends on LINUXBOOT_X86 || LINUXBOOT_X86_64

config LINUXBOOT_KERNEL_UIMAGE
	bool "uImage"
	depends on LINUXBOOT_ARM64 || LINUXBOOT_RISCV_RV32 || LINUXBOOT_RISCV_RV64

endchoice

config LINUXBOOT_DTS_FILE
	string "Compiled devicetree file"
	depends on LINUXBOOT_ARM64 || LINUXBOOT_RISCV_RV32 || LINUXBOOT_RISCV_RV64
	default "empty.dts"

endif #LINUXBOOT_COMPILE_KERNEL

config LINUX_COMMAND_LINE
	string "Kernel command-line"
	default ""
	help
	  Add your own kernel command-line arguments.

config PAYLOAD_FILE
	default "payloads/external/LinuxBoot/build/Image"

comment "Linux initramfs"

config LINUXBOOT_BUILD_INITRAMFS
	bool "Build initramfs"
	default n

config LINUXBOOT_INITRAMFS_PATH
	string "Path to initramfs"
	default "payloads/external/LinuxBoot/build/initramfs" if LINUXBOOT_UROOT

if LINUXBOOT_BUILD_INITRAMFS

choice
	prompt "Initramfs"
	default LINUXBOOT_UROOT

config LINUXBOOT_UROOT
	bool "u-root"
	depends on !LINUXBOOT_RISCV_RV32 # not supported by u-root
	help
	  Enable u-root linuxboot mode.
	  See http://u-root.tk/ for more information.

endchoice

if LINUXBOOT_UROOT

choice
	prompt "U-root version"
	default LINUXBOOT_UROOT_MAIN

config LINUXBOOT_UROOT_CUSTOM
	bool "custom"
	help
	  choose a custom u-root branch

config LINUXBOOT_UROOT_MAIN
	bool "main"
	help
	  Latest u-root version

config LINUXBOOT_UROOT_V7_0_0
	bool "v7.0.0"

config LINUXBOOT_UROOT_V6_0_0
	bool "v6.0.0"

config LINUXBOOT_UROOT_V5_0_0
	bool "v5.0.0"

config LINUXBOOT_UROOT_V4_0_0
	bool "v4.0.0"

config LINUXBOOT_UROOT_V3_0_0
	bool "v3.0.0"

config LINUXBOOT_UROOT_V2_0_0
	bool "v2.0.0"

config LINUXBOOT_UROOT_V1_0_0
	bool "v1.0.0"

endchoice

config LINUXBOOT_UROOT_CHECKOUT
	string "U-root custom branch"
	depends on LINUXBOOT_UROOT_CUSTOM

config LINUXBOOT_UROOT_VERSION
	string
	default LINUXBOOT_UROOT_CHECKOUT if LINUXBOOT_UROOT_CUSTOM
	default "main" if LINUXBOOT_UROOT_MAIN
	default "v7.0.0" if LINUXBOOT_UROOT_V7_0_0
	default "v6.0.0" if LINUXBOOT_UROOT_V6_0_0
	default "v5.0.0" if LINUXBOOT_UROOT_V5_0_0
	default "v4.0.0" if LINUXBOOT_UROOT_V4_0_0
	default "v3.0.0" if LINUXBOOT_UROOT_V3_0_0
	default "v2.0.0" if LINUXBOOT_UROOT_V2_0_0
	default "v1.0.0" if LINUXBOOT_UROOT_V1_0_0

choice
	prompt "Build format"
	default LINUXBOOT_UROOT_BB
	help
	  u-root build format (e.g. bb or source). (default "bb")

config LINUXBOOT_UROOT_BB
	bool "bb"

config LINUXBOOT_UROOT_SOURCE
	bool "source (experimental)"

endchoice

config LINUXBOOT_UROOT_FORMAT
	string
	default "bb" if LINUXBOOT_UROOT_BB
	default "source" if LINUXBOOT_UROOT_SOURCE

config LINUXBOOT_UROOT_FILES
	string "Add files to u-root base"
	help
	  Additional files, directories, and binaries (with their ldd dependencies) to add to archive.
	  Can be speficified multiple times.

config LINUXBOOT_UROOT_INITCMD
	string "Init target"
	default "init"
	help
	  Symlink target for /init.
	  Can be an absolute path or a u-root command name. (default "init")

config LINUXBOOT_UROOT_SHELL
	string "default shell"
	default "gosh"
	help
	  Default shell.
	  Can be an absolute path or a u-root command name. (default "elvish")

config LINUXBOOT_UROOT_COMMANDS
	string "U-root commands"
	default "boot coreboot-app"
	help
	  List of additional modules to include,
	  separated by space. (default "boot coreboot-app")

if LINUXBOOT_UROOT_MAIN

choice
	prompt "Choose a specific bootloader"
	default SPECIFIC_BOOTLOADER_BOOT
	help
	  Specify a bootloader which starts after u-root init. It will be a symlink
	  to /bin/uinit. Default: boot

config SPECIFIC_BOOTLOADER_NONE
	bool "none"
	help
	  Leave u-root to decide which bootloaders to load first after init, if
	  any at all. Most likely u-root will start into the defined u-root shell.

config SPECIFIC_BOOTLOADER_BOOT
	bool "boot"

config SPECIFIC_BOOTLOADER_PXEBOOT
	bool "pxeboot"

config SPECIFIC_BOOTLOADER_FITBOOT
	bool "fitboot"

config SPECIFIC_BOOTLOADER_CUSTOM
	bool "custom"

endchoice

config SPECIFIC_BOOTLOADER_CUSTOM_CMD
	string "Specify a custom program to start"
	depends on SPECIFIC_BOOTLOADER_CUSTOM
	help
	  This option will symlink the input to /bin/unit which will set it as the
	  first boot program after the u-root init. Program flags are not
	  symlinkable.

config LINUXBOOT_UROOT_UINITCMD
	string
	default "" if SPECIFIC_BOOTLOADER_NONE
	default "boot" if SPECIFIC_BOOTLOADER_BOOT
	default "pxeboot" if SPECIFIC_BOOTLOADER_PXEBOOT
	default "fitboot" if SPECIFIC_BOOTLOADER_FITBOOT
	default SPECIFIC_BOOTLOADER_CUSTOM_CMD if SPECIFIC_BOOTLOADER_CUSTOM

endif #LINUXBOOT_UROOT_MAIN

endif #LINUXBOOT_UROOT

endif #LINUXBOOT_BUILD_INITRAMFS

choice
	prompt "Initramfs compression format"
	default LINUXBOOT_INITRAMFS_COMPRESSION_XZ

config LINUXBOOT_INITRAMFS_COMPRESSION_NONE
	bool "none"

config LINUXBOOT_INITRAMFS_COMPRESSION_XZ
	bool "xz compression"
	depends on LINUXBOOT_BUILD_INITRAMFS

endchoice

config LINUXBOOT_INITRAMFS_SUFFIX
	string
	default "" if LINUXBOOT_INITRAMFS_COMPRESSION_NONE
	default ".xz" if LINUXBOOT_INITRAMFS_COMPRESSION_XZ

endif #PAYLOAD_LINUXBOOT