menu "Payload" choice prompt "Add a payload" default PAYLOAD_NONE if !ARCH_X86 default PAYLOAD_SEABIOS if ARCH_X86 config PAYLOAD_NONE bool "None" help Select this option if you want to create an "empty" coreboot ROM image for a certain mainboard, i.e. a coreboot ROM image which does not yet contain a payload. For such an image to be useful, you have to use 'cbfstool' to add a payload to the ROM image later. config PAYLOAD_ELF bool "An ELF executable payload" help Select this option if you have a payload image (an ELF file) which coreboot should run as soon as the basic hardware initialization is completed. You will be able to specify the location and file name of the payload image later. source "payloads/external/*/Kconfig.name" endchoice source "payloads/external/*/Kconfig" config PAYLOAD_FILE string "Payload path and filename" depends on PAYLOAD_ELF default "payload.elf" help The path and filename of the ELF executable file to use as payload. # TODO: Defined if no payload? Breaks build? config COMPRESSED_PAYLOAD_LZMA bool "Use LZMA compression for payloads" default y depends on !PAYLOAD_NONE && !PAYLOAD_LINUX help In order to reduce the size payloads take up in the ROM chip coreboot can compress them using the LZMA algorithm. endmenu