diff options
Diffstat (limited to 'arch/mips/Makefile')
| -rw-r--r-- | arch/mips/Makefile | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/arch/mips/Makefile b/arch/mips/Makefile index 691a6e125879..f3e768a69a52 100644 --- a/arch/mips/Makefile +++ b/arch/mips/Makefile @@ -264,6 +264,12 @@ KBUILD_CPPFLAGS += -DDATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0) bootvars-y = VMLINUX_LOAD_ADDRESS=$(load-y) \ VMLINUX_ENTRY_ADDRESS=$(entry-y) \ PLATFORM=$(platform-y) +ifdef CONFIG_32BIT +bootvars-y += ADDR_BITS=32 +endif +ifdef CONFIG_64BIT +bootvars-y += ADDR_BITS=64 +endif LDFLAGS += -m $(ld-emul) @@ -431,4 +437,54 @@ define archhelp echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)' echo echo ' These will be default as appropriate for a configured platform.' + echo + echo ' If you are targeting a system supported by generic kernels you may' + echo ' configure the kernel for a given architecture target like so:' + echo + echo ' {micro32,32,64}{r1,r2,r6}{el,}_defconfig <BOARDS="list of boards">' + echo + echo ' Otherwise, the following default configurations are available:' endef + +generic_config_dir = $(srctree)/arch/$(ARCH)/configs/generic +generic_defconfigs := + +# +# If the user generates a generic kernel configuration without specifying a +# list of boards to include the config fragments for, default to including all +# available board config fragments. +# +ifeq ($(BOARDS),) +BOARDS = $(patsubst board-%.config,%,$(notdir $(wildcard $(generic_config_dir)/board-*.config))) +endif + +# +# Generic kernel configurations which merge generic_defconfig with the +# appropriate config fragments from arch/mips/configs/generic/, resulting in +# the ability to easily configure the kernel for a given architecture, +# endianness & set of boards without duplicating the needed configuration in +# hundreds of defconfig files. +# +define gen_generic_defconfigs +$(foreach bits,$(1),$(foreach rev,$(2),$(foreach endian,$(3), +target := $(bits)$(rev)$(filter el,$(endian))_defconfig +generic_defconfigs += $$(target) +$$(target): $(generic_config_dir)/$(bits)$(rev).config +$$(target): $(generic_config_dir)/$(endian).config +))) +endef + +$(eval $(call gen_generic_defconfigs,32 64,r1 r2 r6,eb el)) +$(eval $(call gen_generic_defconfigs,micro32,r2,eb el)) + +.PHONY: $(generic_defconfigs) +$(generic_defconfigs): + $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \ + -m -O $(objtree) $(srctree)/arch/$(ARCH)/configs/generic_defconfig $^ \ + $(foreach board,$(BOARDS),$(generic_config_dir)/board-$(board).config) + $(Q)$(MAKE) olddefconfig + +# +# Prevent generic merge_config rules attempting to merge single fragments +# +$(generic_config_dir)/%.config: ; |