# SPDX-License-Identifier: GPL-2.0

# Backward compatibility

asflags-y += $(EXTRA_AFLAGS)

ccflags-y += $(EXTRA_CFLAGS)

cppflags-y += $(EXTRA_CPPFLAGS)

ldflags-y += $(EXTRA_LDFLAGS)

# flags that take effect in current and sub directories

KBUILD_AFLAGS += $(subdir-asflags-y)

KBUILD_CFLAGS += $(subdir-ccflags-y)

# Figure out what we need to build from the various variables

# ===========================================================================

# When an object is listed to be built compiled-in and modular,

# only build the compiled-in version

obj-m := $(filter-out $(obj-y),$(obj-m))

# Libraries are always collected in one lib file.

# Filter out objects already built-in

lib-y := $(filter-out $(obj-y), $(sort $(lib-y) $(lib-m)))

# Subdirectories we need to descend into

subdir-ym := $(sort $(subdir-y) $(subdir-m) \

$(patsubst %/,%, $(filter %/, $(obj-y) $(obj-m))))

# Handle objects in subdirs:

# - If we encounter foo/ in $(obj-y), replace it by foo/built-in.a and

# foo/modules.order

# - If we encounter foo/ in $(obj-m), replace it by foo/modules.order

#

# Generate modules.order to determine modorder. Unfortunately, we don't have

# information about ordering between -y and -m subdirs. Just put -y's first.

ifdef need-modorder

obj-m := $(patsubst %/,%/modules.order, $(filter %/, $(obj-y)) $(obj-m))

else

obj-m := $(filter-out %/, $(obj-m))

endif

ifdef need-builtin

obj-y := $(patsubst %/, %/built-in.a, $(obj-y))

else

obj-y := $(filter-out %/, $(obj-y))

endif

# Expand $(foo-objs) $(foo-y) etc. by replacing their individuals

suffix-search = $(strip $(foreach s, $3, $($(1:%$(strip $2)=%$s))))

# List composite targets that are constructed by combining other targets

multi-search = $(sort $(foreach m, $1, $(if $(call suffix-search, $m, $2, $3 -), $m)))

# List primitive targets that are compiled from source files

real-search = $(foreach m, $1, $(if $(call suffix-search, $m, $2, $3 -), $(call suffix-search, $m, $2, $3), $m))

# If $(foo-objs), $(foo-y), $(foo-m), or $(foo-) exists, foo.o is a composite object

multi-obj-y := $(call multi-search, $(obj-y), .o, -objs -y)

multi-obj-m := $(call multi-search, $(obj-m), .o, -objs -y -m)

multi-obj-ym := $(multi-obj-y) $(multi-obj-m)

# Replace multi-part objects by their individual parts,

# including built-in.a from subdirectories

real-obj-y := $(call real-search, $(obj-y), .o, -objs -y)

real-obj-m := $(call real-search, $(obj-m), .o, -objs -y -m)

always-y += $(always-m)

# hostprogs-always-y += foo

# ... is a shorthand for

# hostprogs += foo

# always-y += foo

hostprogs += $(hostprogs-always-y) $(hostprogs-always-m)

always-y += $(hostprogs-always-y) $(hostprogs-always-m)

# userprogs-always-y is likewise.

userprogs += $(userprogs-always-y) $(userprogs-always-m)

always-y += $(userprogs-always-y) $(userprogs-always-m)

# Composite DTB (i.e. DTB constructed by overlay)

multi-dtb-y := $(call multi-search, $(dtb-y), .dtb, -dtbs)

# Primitive DTB compiled from *.dts

real-dtb-y := $(call real-search, $(dtb-y), .dtb, -dtbs)

# Base DTB that overlay is applied onto (each first word of $(*-dtbs) expansion)

base-dtb-y := $(foreach m, $(multi-dtb-y), $(firstword $(call suffix-search, $m, .dtb, -dtbs)))

# DTB

# If CONFIG_OF_ALL_DTBS is enabled, all DT blobs are built

extra-y += $(dtb-y)

extra-$(CONFIG_OF_ALL_DTBS) += $(dtb-)

# U-Boot specific

ifneq ($(CHECK_DTBS),)

extra-y += $(patsubst %.dtb,%.dt.yaml, $(dtb-y))

extra-$(CONFIG_OF_ALL_DTBS) += $(patsubst %.dtb,%.dt.yaml, $(dtb-))

endif

# Add subdir path

extra-y := $(addprefix $(obj)/,$(extra-y))

always-y := $(addprefix $(obj)/,$(always-y))

targets := $(addprefix $(obj)/,$(targets))

obj-m := $(addprefix $(obj)/,$(obj-m))

lib-y := $(addprefix $(obj)/,$(lib-y))

real-obj-y := $(addprefix $(obj)/,$(real-obj-y))

real-obj-m := $(addprefix $(obj)/,$(real-obj-m))

multi-obj-m := $(addprefix $(obj)/, $(multi-obj-m))

multi-dtb-y := $(addprefix $(obj)/, $(multi-dtb-y))

real-dtb-y := $(addprefix $(obj)/, $(real-dtb-y))

subdir-ym := $(addprefix $(obj)/,$(subdir-ym))

# Finds the multi-part object the current object will be linked into.

# If the object belongs to two or more multi-part objects, list them all.

modname-multi = $(sort $(foreach m,$(multi-obj-ym),\

$(if $(filter $*.o, $(call suffix-search, $m, .o, -objs -y -m)),$(m:.o=))))

__modname = $(or $(modname-multi),$(basetarget))

modname = $(subst $(space),:,$(__modname))

modfile = $(addprefix $(obj)/,$(__modname))

# target with $(obj)/ and its suffix stripped

target-stem = $(basename $(patsubst $(obj)/%,%,$@))

# These flags are needed for modversions and compiling, so we define them here

# $(modname_flags) defines KBUILD_MODNAME as the name of the module it will

# end up in (or would, if it gets compiled in)

name-fix-token = $(subst $(comma),_,$(subst -,_,$1))

name-fix = $(call stringify,$(call name-fix-token,$1))

basename_flags = -DKBUILD_BASENAME=$(call name-fix,$(basetarget))

modname_flags = -DKBUILD_MODNAME=$(call name-fix,$(modname)) \

-D__KBUILD_MODNAME=kmod_$(call name-fix-token,$(modname))

modfile_flags = -DKBUILD_MODFILE=$(call stringify,$(modfile))

_c_flags = $(filter-out $(CFLAGS_REMOVE_$(target-stem).o), \

$(filter-out $(ccflags-remove-y), \

$(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(ccflags-y)) \

$(CFLAGS_$(target-stem).o))

_a_flags = $(filter-out $(AFLAGS_REMOVE_$(target-stem).o), \

$(filter-out $(asflags-remove-y), \

$(KBUILD_CPPFLAGS) $(KBUILD_AFLAGS) $(asflags-y)) \

$(AFLAGS_$(target-stem).o))

_cpp_flags = $(KBUILD_CPPFLAGS) $(cppflags-y) $(CPPFLAGS_$(target-stem).lds)

#

# Enable gcov profiling flags for a file, directory or for all files depending

# on variables GCOV_PROFILE_obj.o, GCOV_PROFILE and CONFIG_GCOV_PROFILE_ALL

# (in this order)

#

ifeq ($(CONFIG_GCOV_KERNEL),y)

_c_flags += $(if $(patsubst n%,, \

$(GCOV_PROFILE_$(basetarget).o)$(GCOV_PROFILE)$(CONFIG_GCOV_PROFILE_ALL)), \

$(CFLAGS_GCOV))

endif

#

# Enable address sanitizer flags for kernel except some files or directories

# we don't want to check (depends on variables KASAN_SANITIZE_obj.o, KASAN_SANITIZE)

#

ifeq ($(CONFIG_KASAN),y)

ifneq ($(CONFIG_KASAN_HW_TAGS),y)

_c_flags += $(if $(patsubst n%,, \

$(KASAN_SANITIZE_$(basetarget).o)$(KASAN_SANITIZE)y), \

$(CFLAGS_KASAN), $(CFLAGS_KASAN_NOSANITIZE))

endif

endif

ifeq ($(CONFIG_UBSAN),y)

_c_flags += $(if $(patsubst n%,, \

$(UBSAN_SANITIZE_$(basetarget).o)$(UBSAN_SANITIZE)$(CONFIG_UBSAN_SANITIZE_ALL)), \

$(CFLAGS_UBSAN))

endif

ifeq ($(CONFIG_KCOV),y)

_c_flags += $(if $(patsubst n%,, \

$(KCOV_INSTRUMENT_$(basetarget).o)$(KCOV_INSTRUMENT)$(CONFIG_KCOV_INSTRUMENT_ALL)), \

$(CFLAGS_KCOV))

endif

#

# Enable KCSAN flags except some files or directories we don't want to check

# (depends on variables KCSAN_SANITIZE_obj.o, KCSAN_SANITIZE)

#

ifeq ($(CONFIG_KCSAN),y)

_c_flags += $(if $(patsubst n%,, \

$(KCSAN_SANITIZE_$(basetarget).o)$(KCSAN_SANITIZE)y), \

$(CFLAGS_KCSAN))

# Some uninstrumented files provide implied barriers required to avoid false

# positives: set KCSAN_INSTRUMENT_BARRIERS for barrier instrumentation only.

_c_flags += $(if $(patsubst n%,, \

$(KCSAN_INSTRUMENT_BARRIERS_$(basetarget).o)$(KCSAN_INSTRUMENT_BARRIERS)n), \

-D__KCSAN_INSTRUMENT_BARRIERS__)

endif

# $(srctree)/$(src) for including checkin headers from generated source files

# $(objtree)/$(obj) for including generated headers from checkin source files

ifeq ($(KBUILD_EXTMOD),)

ifdef building_out_of_srctree

_c_flags += -I $(srctree)/$(src) -I $(objtree)/$(obj)

_a_flags += -I $(srctree)/$(src) -I $(objtree)/$(obj)

_cpp_flags += -I $(srctree)/$(src) -I $(objtree)/$(obj)

endif

endif

part-of-module = $(if $(filter $(basename $@).o, $(real-obj-m)),y)

quiet_modtag = $(if $(part-of-module),[M], )

modkern_cflags = \

$(if $(part-of-module), \

$(KBUILD_CFLAGS_MODULE) $(CFLAGS_MODULE), \

$(KBUILD_CFLAGS_KERNEL) $(CFLAGS_KERNEL) $(modfile_flags))

modkern_aflags = $(if $(part-of-module), \

$(KBUILD_AFLAGS_MODULE) $(AFLAGS_MODULE), \

$(KBUILD_AFLAGS_KERNEL) $(AFLAGS_KERNEL))

# Modified for U-Boot: LINUXINCLUDE -> UBOOTINCLUDE

# removed the inclusion of compiler_types.h for sandbox build

c_flags = -Wp,-MMD,$(depfile) $(NOSTDINC_FLAGS) $(UBOOTINCLUDE) \

$(_c_flags) $(modkern_cflags) \

$(basename_flags) $(modname_flags)

a_flags = -Wp,-MMD,$(depfile) $(NOSTDINC_FLAGS) $(UBOOTINCLUDE) \

$(_a_flags) $(modkern_aflags)

cpp_flags = -Wp,-MMD,$(depfile) $(NOSTDINC_FLAGS) $(UBOOTINCLUDE) \

$(_cpp_flags)

ld_flags = $(KBUILD_LDFLAGS) $(ldflags-y) $(LDFLAGS_$(@F))

# Try these files in order to find the U-Boot-specific .dtsi include file

u_boot_dtsi_loc = $(srctree)/arch/$(ARCH)/dts/

u_boot_dtsi_options = $(strip $(wildcard $(u_boot_dtsi_loc)$(basename $(notdir $<))-u-boot.dtsi) \

$(wildcard $(u_boot_dtsi_loc)$(subst $\",,$(CONFIG_SYS_SOC))-u-boot.dtsi) \

$(wildcard $(u_boot_dtsi_loc)$(subst $\",,$(CONFIG_SYS_CPU))-u-boot.dtsi) \

$(wildcard $(u_boot_dtsi_loc)$(subst $\",,$(CONFIG_SYS_VENDOR))-u-boot.dtsi) \

$(wildcard $(u_boot_dtsi_loc)u-boot.dtsi))

u_boot_dtsi_options_raw = $(warning Automatic .dtsi inclusion: options: \

$(u_boot_dtsi_loc)$(basename $(notdir $<))-u-boot.dtsi \

$(u_boot_dtsi_loc)$(subst $\",,$(CONFIG_SYS_SOC))-u-boot.dtsi \

$(u_boot_dtsi_loc)$(subst $\",,$(CONFIG_SYS_CPU))-u-boot.dtsi \

$(u_boot_dtsi_loc)$(subst $\",,$(CONFIG_SYS_VENDOR))-u-boot.dtsi \

$(u_boot_dtsi_loc)u-boot.dtsi ... \

found: $(if $(u_boot_dtsi_options),"$(u_boot_dtsi_options)",nothing!))

# Uncomment for debugging

# This shows all the files that were considered and the one that we chose.

ifdef DEVICE_TREE_DEBUG

u_boot_dtsi_options_debug = $(warning $(u_boot_dtsi_options_raw))

endif

# We use the first match to be included

dtsi_include_list = $(strip $(u_boot_dtsi_options_debug) \

$(notdir $(firstword $(u_boot_dtsi_options))))

# Modified for U-Boot

upstream_dtsi_include = $(addprefix -I, $(srctree)/dts/upstream/src/ \

$(sort $(dir $(wildcard $(srctree)/dts/upstream/src/$(ARCH)/*/*))) \

$(sort $(dir $(wildcard $(srctree)/dts/upstream/src/$(ARCH)/*/*/*))) \

$(if (CONFIG_ARM64), \

$(sort $(dir $(wildcard $(srctree)/dts/upstream/src/arm64/*/*))) \

$(sort $(dir $(wildcard $(srctree)/dts/upstream/src/arm64/*/*/*)))))

dtc_cpp_flags = -Wp,-MD,$(depfile).pre.tmp -nostdinc \

$(UBOOTINCLUDE) \

-I$(dir $<) \

-I$(u_boot_dtsi_loc) \

-I$(srctree)/arch/$(ARCH)/dts/include \

-I$(srctree)/include \

$(upstream_dtsi_include) \

-D__ASSEMBLY__ \

-undef -D__DTS__

ifdef CONFIG_OBJTOOL

objtool := $(objtree)/tools/objtool/objtool

objtool_args = \

$(if $(CONFIG_HAVE_JUMP_LABEL_HACK), --hacks=jump_label) \

$(if $(CONFIG_HAVE_NOINSTR_HACK), --hacks=noinstr) \

$(if $(CONFIG_X86_KERNEL_IBT), --ibt) \

$(if $(CONFIG_FTRACE_MCOUNT_USE_OBJTOOL), --mcount) \

$(if $(CONFIG_UNWINDER_ORC), --orc) \

$(if $(CONFIG_RETPOLINE), --retpoline) \

$(if $(CONFIG_RETHUNK), --rethunk) \

$(if $(CONFIG_SLS), --sls) \

$(if $(CONFIG_STACK_VALIDATION), --stackval) \

$(if $(CONFIG_HAVE_STATIC_CALL_INLINE), --static-call) \

$(if $(CONFIG_HAVE_UACCESS_VALIDATION), --uaccess) \

$(if $(delay-objtool), --link) \

$(if $(part-of-module), --module) \

$(if $(CONFIG_GCOV_KERNEL), --no-unreachable)

delay-objtool := $(or $(CONFIG_LTO_CLANG),$(CONFIG_X86_KERNEL_IBT))

cmd_objtool = $(if $(objtool-enabled), ; $(objtool) $(objtool_args) $@)

cmd_gen_objtooldep = $(if $(objtool-enabled), { echo ; echo '$@: $$(wildcard $(objtool))' ; } >> $(dot-target).cmd)

endif # CONFIG_OBJTOOL

# Useful for describing the dependency of composite objects

# Usage:

# $(call multi_depend, multi_used_targets, suffix_to_remove, suffix_to_add)

define multi_depend

$(foreach m, $1, \

$(eval $m: \

$(addprefix $(obj)/, $(call suffix-search, $(patsubst $(obj)/%,%,$m), $2, $3))))

endef

# Copy a file

# ===========================================================================

# 'cp' preserves permissions. If you use it to copy a file in read-only srctree,

# the copy would be read-only as well, leading to an error when executing the

# rule next time. Use 'cat' instead in order to generate a writable file.

quiet_cmd_copy = COPY $@

cmd_copy = cat $< > $@

$(obj)/%: $(src)/%_shipped

$(call cmd,copy)

# Commands useful for building a boot image

# ===========================================================================

#

# Use as following:

#

# target: source(s) FORCE

# $(if_changed,ld/objcopy/gzip)

#

# and add target to 'targets' so that we know we have to

# read in the saved command line

# Linking

# ---------------------------------------------------------------------------

quiet_cmd_ld = LD $@

cmd_ld = $(LD) $(ld_flags) $(real-prereqs) -o $@

# Archive

# ---------------------------------------------------------------------------

quiet_cmd_ar = AR $@

cmd_ar = rm -f $@; $(AR) cDPrsT $@ $(real-prereqs)

# Objcopy

# ---------------------------------------------------------------------------

quiet_cmd_objcopy = OBJCOPY $@

cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@

# Gzip

# ---------------------------------------------------------------------------

quiet_cmd_gzip = GZIP $@

cmd_gzip = cat $(real-prereqs) | $(KGZIP) -n -f -9 > $@

# DTC

# ---------------------------------------------------------------------------

DTC ?= $(objtree)/scripts/dtc/dtc

DTC_FLAGS += -Wno-interrupt_provider

# Disable noisy checks by default

ifeq ($(findstring 1,$(KBUILD_EXTRA_WARN)),)

DTC_FLAGS += -Wno-unit_address_vs_reg \

-Wno-unit_address_format \

-Wno-avoid_unnecessary_addr_size \

-Wno-alias_paths \

-Wno-graph_child_address \

-Wno-simple_bus_reg \

-Wno-unique_unit_address \

-Wno-pci_device_reg

# U-Boot specific disables

DTC_FLAGS += -Wno-pci_bridge \

-Wno-pci_device_bus_num

endif

ifneq ($(findstring 2,$(KBUILD_EXTRA_WARN)),)

DTC_FLAGS += -Wnode_name_chars_strict \

-Wproperty_name_chars_strict \

-Winterrupt_provider

endif

DTC_FLAGS += $(DTC_FLAGS_$(basetarget))

# Set -@ if the target is a base DTB that overlay is applied onto

DTC_FLAGS += $(if $(filter $(patsubst $(obj)/%,%,$@), $(base-dtb-y)), -@)

# Generate an assembly file to wrap the output of the device tree compiler

quiet_cmd_dt_S_dtb= DTBS $@

# Modified for U-Boot

cmd_dt_S_dtb= \

{ \

echo '.section .dtb.init.rodata,"a"'; \

echo '.balign 16'; \

echo '.global __dtb_$(subst -,_,$(*F))_begin'; \

echo '__dtb_$(subst -,_,$(*F))_begin:'; \

echo '.incbin "$<" '; \

echo '__dtb_$(subst -,_,$(*F))_end:'; \

echo '.global __dtb_$(subst -,_,$(*F))_end'; \

echo '.balign 16'; \

} > $@

$(obj)/%.dtb.S: $(obj)/%.dtb FORCE

$(call if_changed,dt_S_dtb)

# Generate an assembly file to wrap the output of the device tree compiler

quiet_cmd_dt_S_dtbo= DTBOS $@

# Modified for U-Boot

cmd_dt_S_dtbo= \

{ \

echo '.section .dtb.init.rodata,"a"'; \

echo '.balign 16'; \

echo '.global __dtbo_$(subst -,_,$(*F))_begin'; \

echo '__dtbo_$(subst -,_,$(*F))_begin:'; \

echo '.incbin "$<" '; \

echo '__dtbo_$(subst -,_,$(*F))_end:'; \

echo '.global __dtbo_$(subst -,_,$(*F))_end'; \

echo '.balign 16'; \

} > $@

$(obj)/%.dtbo.S: $(obj)/%.dtbo

$(call cmd,dt_S_dtbo)

ifeq ($(CONFIG_OF_LIBFDT_OVERLAY),y)

DTC_FLAGS += -@

endif

# In case DEVICE_TREE_DEBUG is set, produce a diff between the base DT and

# DT with U-Boot extras, to show how much does the U-Boot DT differ from

# the base DT. This is particularly useful together with OF_UPSTREAM, to

# minimize the diff between upstream DTs and U-Boot DTs.

ifdef DEVICE_TREE_DEBUG

cmd_dtc_diff = \

$(HOSTCC) -E $(dtc_cpp_flags) -I$(obj) -x assembler-with-cpp -o $(dtn-tmp) $< ; \

$(DTC) -s -O dts -o $@.clean.dts -b 0 \

-i $(dir $<) $(DTC_FLAGS) $(dtn-tmp) || \

(echo "Check $(shell pwd)/$< for errors" && false); \

$(DTC) -s -O dts -o $@.full.dts -b 0 \

-i $(dir $<) -i $(u_boot_dtsi_loc) $(DTC_FLAGS) $(dtc-tmp) || \

(echo "Check $(shell pwd)/$(pre-tmp) for errors" && false); \

(diff -Naru $@.clean.dts $@.full.dts > $@.diff || true)

dtn-tmp = $(subst $(comma),_,$(dot-target).dtn.tmp)

else

cmd_dtc_diff = true

endif

quiet_cmd_dtc = DTC $@

# Modified for U-Boot

# Bring in any U-Boot-specific include at the end of the file

# And finally any custom .dtsi fragments specified with CONFIG_DEVICE_TREE_INCLUDES

cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \

(cat $< > $(pre-tmp)); \

$(foreach f,$(subst $(quote),,$(dtsi_include_list) $(CONFIG_DEVICE_TREE_INCLUDES)), \

echo '$(pound)include "$(f)"' >> $(pre-tmp);) \

$(HOSTCC) -E $(dtc_cpp_flags) -I$(obj) -x assembler-with-cpp -o $(dtc-tmp) $(pre-tmp) ; \

$(DTC) -O dtb -o $@ -b 0 \

-i $(dir $<) -i $(u_boot_dtsi_loc) $(DTC_FLAGS) \

-d $(depfile).dtc.tmp $(dtc-tmp) || \

(echo "Check $(shell pwd)/$(pre-tmp) for errors" && false) \

; \

sed "s:$(pre-tmp):$(<):" $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile) ; \

$(cmd_dtc_diff)

dtsi_include_list_deps := $(addprefix $(u_boot_dtsi_loc),$(subst $(quote),,$(dtsi_include_list)))

ifneq ($(CHECK_DTBS),)

DT_CHECKER ?= dt-validate

DT_CHECKER_FLAGS ?= $(if $(DT_SCHEMA_FILES),-l $(DT_SCHEMA_FILES),-m)

DT_BINDING_DIR := dts/upstream/Bindings

DT_TMP_SCHEMA := $(objtree)/$(DT_BINDING_DIR)/processed-schema.json

quiet_cmd_dtb = DTC_CHK $@

cmd_dtb = $(cmd_dtc) ; $(DT_CHECKER) $(DT_CHECKER_FLAGS) -u $(srctree)/$(DT_BINDING_DIR) -p $(DT_TMP_SCHEMA) $@ || true

else

quiet_cmd_dtb = $(quiet_cmd_dtc)

cmd_dtb = $(cmd_dtc)

endif

$(obj)/%.dtb: $(src)/%.dts $(DTC) $(dtsi_include_list_deps) $(DT_TMP_SCHEMA) FORCE

$(call if_changed_dep,dtb)

pre-tmp = $(subst $(comma),_,$(dot-target).pre.tmp)

dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp)

# DTCO

# ---------------------------------------------------------------------------

quiet_cmd_dtco = DTCO $@

# Rule for objects only; does not put specific u-boot include at the end

# No generation of assembly file either

# Modified for U-Boot

cmd_dtco = mkdir -p $(dir ${dtc-tmp}) ; \

$(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \

$(DTC) -@ -O dtb -o $@ -b 0 \

-i $(dir $<) $(DTC_FLAGS) \

-d $(depfile).dtc.tmp $(dtc-tmp) ; \

cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)

$(obj)/%.dtbo: $(src)/%.dtso $(DTC) FORCE

$(call if_changed_dep,dtco)

quiet_cmd_fdtoverlay = DTOVL $@

cmd_fdtoverlay = fdtoverlay -o $@ -i $(real-prereqs)

$(multi-dtb-y): FORCE

$(call if_changed,fdtoverlay)

$(call multi_depend, $(multi-dtb-y), .dtb, -dtbs)

# Fonts

# ---------------------------------------------------------------------------

# Generate an assembly file to wrap the font data

quiet_cmd_S_ttf= TTF $@

# Modified for U-Boot

cmd_S_ttf= \

( \

echo '.section .rodata.ttf.init,"a"'; \

echo '.balign 16'; \

echo '.global __ttf_$(*F)_begin'; \

echo '__ttf_$(*F)_begin:'; \

echo '.incbin "$<" '; \

echo '__ttf_$(*F)_end:'; \

echo '.global __ttf_$(*F)_end'; \

echo '.balign 16'; \

) > $@

$(obj)/%.S: $(src)/%.ttf

$(call cmd,S_ttf)

# Splash logos

# ---------------------------------------------------------------------------

# Generate an assembly file to wrap the splash data

quiet_cmd_S_splash= TTF $@

# Modified for U-Boot

cmd_S_splash= \

( \

echo '.section .rodata.splash.init,"a"'; \

echo '.balign 16'; \

echo '.global __splash_$(*F)_begin'; \

echo '__splash_$(*F)_begin:'; \

echo '.incbin "$<" '; \

echo '__splash_$(*F)_end:'; \

echo '.global __splash_$(*F)_end'; \

echo '.balign 16'; \

) > $@

$(obj)/%.S: $(src)/%.bmp

$(call cmd,S_splash)

# EFI applications

# A Makefile target *.efi is built as EFI application.

# A Makefile target *_efi.S wraps *.efi as built-in EFI application.

# ---------------------------------------------------------------------------

# Generate an assembly file to wrap the EFI app

cmd_S_efi= \

( \

echo '.section .rodata.$*.init,"a"'; \

echo '.balign 16'; \

echo '.global __efi_$*_begin'; \

echo '__efi_$*_begin:'; \

echo '.incbin "$<" '; \

echo '__efi_$*_end:'; \

echo '.global __efi_$*_end'; \

echo '.balign 16'; \

) > $@

$(obj)/%_efi.S: $(obj)/%.efi

$(call cmd,S_efi)

quiet_cmd_efi_objcopy = OBJCOPY $@

cmd_efi_objcopy = $(OBJCOPY) -j .header -j .text -j .sdata -j .data \

-j .dynamic -j .dynstr -j .dynsym -j .rel* -j .reloc \

$(if $(EFI_TARGET),$(EFI_TARGET),-O binary) $^ $@

$(obj)/%.efi: $(obj)/%_efi.so

$(call cmd,efi_objcopy)

KBUILD_EFILDFLAGS = -nostdlib -zexecstack -znocombreloc -znorelro

KBUILD_EFILDFLAGS += $(call ld-option,--no-warn-rwx-segments)

quiet_cmd_efi_ld = LD $@

cmd_efi_ld = $(LD) $(KBUILD_EFILDFLAGS) -L $(srctree) -T $(EFI_LDS_PATH) \

-shared -Bsymbolic -s $^ $(PLATFORM_LIBGCC) -o $@

EFI_LDS_PATH = arch/$(ARCH)/lib/$(EFI_LDS)

$(obj)/efi_crt0.o: $(srctree)/arch/$(ARCH)/lib/$(EFI_CRT0:.o=.S) FORCE

$(call if_changed_dep,as_o_S)

$(obj)/efi_reloc.o: $(srctree)/arch/$(ARCH)/lib/$(EFI_RELOC:.o=.c) $(recordmcount_source) FORCE

$(call cmd,force_checksrc)

$(call if_changed_rule,cc_o_c)

$(obj)/%_efi.so: $(obj)/%.o $(obj)/efi_crt0.o $(obj)/efi_reloc.o $(obj)/efi_freestanding.o

$(call cmd,efi_ld)

targets += $(obj)/efi_crt0.o $(obj)/efi_reloc.o $(obj)/efi_freestanding.o

CFLAGS_REMOVE_efi_reloc.o := $(LTO_CFLAGS)

CFLAGS_REMOVE_efi_freestanding.o := $(LTO_CFLAGS)

# ACPI

# ---------------------------------------------------------------------------

#

# This first sends the file (typically dsdt.asl) through the preprocessor

# resolve includes and any CONFIG options used. This produces dsdt.asl.tmp

# which is pure ASL code. The Intel ASL (ACPI (Advanced Configuration and Power

# Interface) Source Language compiler (iasl) then converts this ASL code into a

# C file containing the hex data to build into U-Boot. This file is called

# dsdt_generated.hex (despite us setting the prefix to .../dsdt_generated.asl.tmp)

# so must be renamed to dsdt_generated.c for consumption by the build system.

ASL_TMP = $(patsubst %.c,%.asl.tmp,$@)

quiet_cmd_acpi_c_asl= ASL $<

cmd_acpi_c_asl= \

$(CPP) -x assembler-with-cpp -D__ASSEMBLY__ -D__ACPI__ \

-P $(UBOOTINCLUDE) -o $(ASL_TMP) $< && \

iasl -p $@ -I $(srctree)/board/$(BOARDDIR) -tc $(ASL_TMP) \

$(if $(KBUILD_VERBOSE:1=), >/dev/null) && \

mv $(patsubst %.c,%.hex,$@) $@

$(obj)/dsdt_generated.c: $(src)/dsdt.asl

$(call cmd,acpi_c_asl)

$(Q)sed -i -e "s,dsdt_generated_aml_code,AmlCode," $@

# Bzip2

# ---------------------------------------------------------------------------

# Bzip2 and LZMA do not include size in file... so we have to fake that;

# append the size as a 32-bit littleendian number as gzip does.

size_append = printf $(shell \

dec_size=0; \

for F in $(real-prereqs); do \

fsize=$$($(CONFIG_SHELL) $(srctree)/scripts/file-size.sh $$F); \

dec_size=$$(expr $$dec_size + $$fsize); \

done; \

printf "%08x\n" $$dec_size | \

sed 's/\(..\)/\1 /g' | { \

read ch0 ch1 ch2 ch3; \

for ch in $$ch3 $$ch2 $$ch1 $$ch0; do \

printf '%s%03o' '\\' $$((0x$$ch)); \

done; \

} \

)

quiet_cmd_file_size = GEN $@

cmd_file_size = $(size_append) > $@

quiet_cmd_bzip2 = BZIP2 $@

cmd_bzip2 = cat $(real-prereqs) | $(KBZIP2) -9 > $@

quiet_cmd_bzip2_with_size = BZIP2 $@

cmd_bzip2_with_size = { cat $(real-prereqs) | $(KBZIP2) -9; $(size_append); } > $@

# Lzma

# ---------------------------------------------------------------------------

quiet_cmd_lzma = LZMA $@

cmd_lzma = cat $(real-prereqs) | $(LZMA) -9 > $@

quiet_cmd_lzma_with_size = LZMA $@

cmd_lzma_with_size = { cat $(real-prereqs) | $(LZMA) -9; $(size_append); } > $@

quiet_cmd_lzo = LZO $@

cmd_lzo = cat $(real-prereqs) | $(KLZOP) -9 > $@

quiet_cmd_lzo_with_size = LZO $@

cmd_lzo_with_size = { cat $(real-prereqs) | $(KLZOP) -9; $(size_append); } > $@

quiet_cmd_lz4 = LZ4 $@

cmd_lz4 = cat $(real-prereqs) | $(LZ4) -l -c1 stdin stdout > $@

quiet_cmd_lz4_with_size = LZ4 $@

cmd_lz4_with_size = { cat $(real-prereqs) | $(LZ4) -l -c1 stdin stdout; \

$(size_append); } > $@

# U-Boot mkimage

# ---------------------------------------------------------------------------

MKIMAGE := $(srctree)/scripts/mkuboot.sh

# SRCARCH just happens to match slightly more than ARCH (on sparc), so reduces

# the number of overrides in arch makefiles

UIMAGE_ARCH ?= $(SRCARCH)

UIMAGE_COMPRESSION ?= $(or $(2),none)

UIMAGE_OPTS-y ?=

UIMAGE_TYPE ?= kernel

UIMAGE_LOADADDR ?= arch_must_set_this

UIMAGE_ENTRYADDR ?= $(UIMAGE_LOADADDR)

UIMAGE_NAME ?= 'Linux-$(KERNELRELEASE)'

quiet_cmd_uimage = UIMAGE $@

cmd_uimage = $(BASH) $(MKIMAGE) -A $(UIMAGE_ARCH) -O linux \

-C $(UIMAGE_COMPRESSION) $(UIMAGE_OPTS-y) \

-T $(UIMAGE_TYPE) \

-a $(UIMAGE_LOADADDR) -e $(UIMAGE_ENTRYADDR) \

-n $(UIMAGE_NAME) -d $< $@

# XZ

# ---------------------------------------------------------------------------

# Use xzkern to compress the kernel image and xzmisc to compress other things.

#

# xzkern uses a big LZMA2 dictionary since it doesn't increase memory usage

# of the kernel decompressor. A BCJ filter is used if it is available for

# the target architecture. xzkern also appends uncompressed size of the data

# using size_append. The .xz format has the size information available at

# the end of the file too, but it's in more complex format and it's good to

# avoid changing the part of the boot code that reads the uncompressed size.

# Note that the bytes added by size_append will make the xz tool think that

# the file is corrupt. This is expected.

#

# xzmisc doesn't use size_append, so it can be used to create normal .xz

# files. xzmisc uses smaller LZMA2 dictionary than xzkern, because a very

# big dictionary would increase the memory usage too much in the multi-call

# decompression mode. A BCJ filter isn't used either.

quiet_cmd_xzkern = XZKERN $@

cmd_xzkern = cat $(real-prereqs) | sh $(srctree)/scripts/xz_wrap.sh > $@

quiet_cmd_xzkern_with_size = XZKERN $@

cmd_xzkern_with_size = { cat $(real-prereqs) | sh $(srctree)/scripts/xz_wrap.sh; \

$(size_append); } > $@

quiet_cmd_xzmisc = XZMISC $@

cmd_xzmisc = cat $(real-prereqs) | $(XZ) --check=crc32 --lzma2=dict=1MiB > $@

# ZSTD

# ---------------------------------------------------------------------------

# Appends the uncompressed size of the data using size_append. The .zst

# format has the size information available at the beginning of the file too,

# but it's in a more complex format and it's good to avoid changing the part

# of the boot code that reads the uncompressed size.

#

# Note that the bytes added by size_append will make the zstd tool think that

# the file is corrupt. This is expected.

#

# zstd uses a maximum window size of 8 MB. zstd22 uses a maximum window size of

# 128 MB. zstd22 is used for kernel compression because it is decompressed in a

# single pass, so zstd doesn't need to allocate a window buffer. When streaming

# decompression is used, like initramfs decompression, zstd22 should likely not

# be used because it would require zstd to allocate a 128 MB buffer.

quiet_cmd_zstd = ZSTD $@

cmd_zstd = cat $(real-prereqs) | $(ZSTD) -19 > $@

quiet_cmd_zstd22 = ZSTD22 $@

cmd_zstd22 = cat $(real-prereqs) | $(ZSTD) -22 --ultra > $@

quiet_cmd_zstd22_with_size = ZSTD22 $@

cmd_zstd22_with_size = { cat $(real-prereqs) | $(ZSTD) -22 --ultra; $(size_append); } > $@

# Additional commands for U-Boot

#

# bin2c

# ---------------------------------------------------------------------------

quiet_cmd_bin2c = BIN2C $@

cmd_bin2c = $(objtree)/scripts/bin2c $2 < $< > $@

# mkimage

# ---------------------------------------------------------------------------

MKIMAGEOUTPUT ?= /dev/null

quiet_cmd_mkimage = MKIMAGE $@

cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \

>$(MKIMAGEOUTPUT) $(if $(KBUILD_VERBOSE:0=), && cat $(MKIMAGEOUTPUT))

# fdtgrep

# ---------------------------------------------------------------------------

# Pass the original device tree file through fdtgrep twice. The first pass

# removes any unwanted nodes (i.e. those which don't have the

# 'bootph-all' property and thus are not needed by SPL. The second

# pass removes various unused properties from the remaining nodes.

# The output is typically a much smaller device tree file.

ifeq ($(CONFIG_VPL_BUILD),y)

fdtgrep_props := -b bootph-all -b bootph-verify $(migrate_vpl)

else

ifeq ($(CONFIG_TPL_BUILD),y)

fdtgrep_props := -b bootph-all -b bootph-pre-sram $(migrate_tpl)

else

fdtgrep_props := -b bootph-all -b bootph-pre-ram $(migrate_spl)

endif

endif

# This rule produces the .dtb for an SPL build.

#

# The first fdtgrep keeps nodes with the above properties (with -u ensuring that

# the properties are implied in all parents of a matching node). The root node

# is always included, along with /chosen and /config nodes. Referenced aliases

# (i.e. properties in /aliases which point to an incldued node) are also

# included.

#

# The second fdtgrep removes all bootph properties along with unused strings

# and any properties in CONFIG_OF_SPL_REMOVE_PROPS

quiet_cmd_fdtgrep = FDTGREP $@

cmd_fdtgrep = $(objtree)/tools/fdtgrep $(fdtgrep_props) -u -RT $< \

-n /chosen -n /config -O dtb | \

$(objtree)/tools/fdtgrep -r -O dtb - -o $@ \

-P bootph-all -P bootph-pre-ram -P bootph-pre-sram \

-P bootph-verify -P bootph-some-ram \

$(migrate_all) \

$(addprefix -P ,$(subst $\",,$(CONFIG_OF_SPL_REMOVE_PROPS)))

# fdt_rm_props

# ---------------------------------------------------------------------------

# Pass the original device tree file through fdtgrep. This removes various

# unused properties. The output is typically a smaller device tree file.

quiet_cmd_fdt_rm_props = FDTGREP $@

cmd_fdt_rm_props = cat $< | $(objtree)/tools/fdtgrep -r -O dtb - -o $@ \

$(addprefix -P ,$(subst $\",,$(CONFIG_OF_REMOVE_PROPS)))

# ASM offsets

# ---------------------------------------------------------------------------

# Default sed regexp - multiline due to syntax constraints

#

# Use [:space:] because LLVM's integrated assembler inserts <tab> around

# the .ascii directive whereas GCC keeps the <space> as-is.

define sed-offsets

's:^[[:space:]]*\.ascii[[:space:]]*"\(.*\)".*:\1:; \

/^->/{s:->#\(.*\):/* \1 */:; \

s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \

s:->::; p;}'

endef

# Use filechk to avoid rebuilds when a header changes, but the resulting file

# does not

define filechk_offsets

echo "#ifndef $2"; \

echo "#define $2"; \

echo "/*"; \

echo " * DO NOT MODIFY."; \

echo " *"; \

echo " * This file was generated by Kbuild"; \

echo " */"; \

echo ""; \

sed -ne $(sed-offsets) < $<; \

echo ""; \

echo "#endif"

endef