# -*- makefile -*-
# vim: set filetype=make :
# Copyright 2012 The ChromiumOS Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
#
# Embedded Controller firmware build system - common targets
#

FLATSIZE_FILE ?= .sizes.txt
BUILD_DIR := $(firstword $(subst /, ,$(out)))

# Don't do a build test on the following boards:
skip_boards = OWNERS cr50 host
boards := $(filter-out $(skip_boards),$(notdir $(wildcard board/* private*/board/*)))

# Create output directories if necessary
_common_dir_create := $(foreach d,$(common_dirs) $(common-dirs-y),\
	$(shell [ -d $(out)/$(d) ] || mkdir -p $(out)/$(d)))
_sharedlib_dir_create := $(foreach d,$(dirs),$(shell \
	[ -d $(out)/$(SHOBJLIB)/$(d) ] || mkdir -p $(out)/$(SHOBJLIB)/$(d)))
_dir_create := $(foreach d,$(dirs) $(dirs-y),\
	$(shell [ -d $(out)/$(BLD)/$(d) ] || mkdir -p $(out)/RO/$(d); \
	    mkdir -p $(out)/RW/$(d); mkdir -p $(out)/gen/$(d)))

# V unset for normal output, V=1 for verbose output, V=0 for silent build
# (warnings/errors only). Use echo thus: $(call echo,"stuff  to  echo")
# Note: if cmd_* includes a $(MAKE) invocation, use the '+' prefix
# to inherit parallel make execution: "+$(call quiet,...)"
ifeq ($(V),0)
# V=0
Q := @
echo = echo -n;
quiet = echo -n; $(cmd_$(1))
silent = 1>/dev/null
silent_err = 2>/dev/null
MAKEFLAGS += --no-print-directory
else ifeq ($(V),)
# V=
Q := @
echo = echo $(1);
echo-cmd = $(if $(quiet_cmd_$(1)), \
		$(quiet_cmd_$(1)), \
		$(2) $(patsubst $(out)/%,%,$@))
quiet = @echo ' $(echo-cmd)' ; $(cmd_$(1))
silent = 1>/dev/null
silent_err = 2>/dev/null
MAKEFLAGS += --no-print-directory
else
# V=*
Q :=
echo = echo $(1);
quiet = $(cmd_$(1))
endif

# Provide an option to use a consistent ec_version.h file when
# compiling, which is useful to verify that a commit does not modify
# the resulting ec.bin
export STATIC_VERSION

# Commonly used compiler options used in these scripts
#
# -MT explicitly sets target file name in generated .d files to work around
#    a ccache issue.

# commands to build all targets
cmd_libec = $(LD) -r $^ -o $@.1.o ${silent_err} && \
	$(OBJCOPY) --localize-hidden $@.1.o $@.2.o ${silent_err} && \
	$(AR) scr $@ $@.2.o ${silent_err}
cmd_lds = $(CPP) -P -C -MMD -MF $@.d -MT $@ $(CPPFLAGS) $< -o $@
cmd_lds_b = $(cmd_lds) -DRW_B_LDS=$(EMPTY)
# Allow obj_to_bin to be overridden by board or chip specific commands
cmd_obj_to_bin ?= $(OBJCOPY) --gap-fill=0xff -O binary $^ $(out)/$*.bin.tmp
cmd_flat_to_obj = $(CC) -Wl,-T $(out)/firmware_image.lds -nostdlib $(CFLAGS) \
                  -Wl,--build-id=none -o $@ $<
# Allow the .roshared section to overlap other sections (itself)
cmd_ec_elf_to_flat ?= $(OBJCOPY) --set-section-flags .roshared=share -R .dram* \
				-O binary $< $@
cmd_ec_elf_to_flat_dram ?= $(OBJCOPY) -j .dram* -O binary $< $@
cmd_elf_to_signed ?= $(SIGNER) --key=util/signer/$(3) \
	--b --input=$< --format=bin --output=$@.signed $(SIGNER_EXTRAS) \
	&& sudo chown $(shell whoami) $@.signed && mv $@.signed $@
cmd_elf_to_dis = $(OBJDUMP) -D $< > $@
cmd_elf_to_bin = $(OBJCOPY) -O binary $< $@
cmd_elf_to_hex = $(OBJCOPY) -O ihex $< $@
cmd_bin_to_hex = $(OBJCOPY) -I binary -O ihex \
	--change-addresses $(_program_memory_base) $^ $@
cmd_smap = $(NM) $< | sort > $@
cmd_elf = $(CC) $(objs) $(libsharedobjs_elf-y) $(LDFLAGS) \
	-o $@ -Wl,-T,$< -Wl,-Map,$(patsubst %.elf,%.map,$@) -flto-partition=one
cmd_fuzz_exe = $(CXX) $^ $(HOST_TEST_LDFLAGS) $(LDFLAGS_EXTRA) -o $@
cmd_run_fuzz = build/host/$*/$*.exe -seed=1 -runs=1 $(silent) \
	$(silent_err) || (echo "Test $* failed!" && false)
cmd_exe = $(CC) $(ro-objs) $(HOST_TEST_LDFLAGS) $(LDFLAGS_EXTRA) -o $@
cmd_c_to_o = $(CC) $(C_WARN) $(CFLAGS) -MMD -MP -MF $@.d -c $< \
		-MT $(@D)/$(@F) -o $(@D)/$(@F)
cmd_cxx_to_o = $(CXX) -std=c++11 $(CFLAGS) $(CXXFLAGS) -MMD -MP -MF $@.d -c $< \
		      -MT $(@D)/$(@F) -o $(@D)/$(@F)
cmd_c_to_build = $(BUILDCC) $(BUILD_CFLAGS) \
	         $(sort $(foreach c,$($(*F)-objs),util/$(c:%.o=%.c)) $(wildcard $*.c)) \
	         $(BUILD_LDFLAGS) \
	         -MMD -MF $@.d -MT $@ -o $@
cmd_c_to_vif = $(BUILDCC) $(BUILD_CFLAGS) $(STANDALONE_FLAGS) \
		-MMD -MF $@.d -c $< -flto -MT $@ -o $@
cmd_c_to_host = $(HOSTCC) $(HOST_CFLAGS) -MMD -MF $@.d -MT $@ -o $@ \
	         $(sort $(foreach c,$($(*F)-objs),util/$(c:%.o=%.c)) $(wildcard $*.c)) $(HOST_LDFLAGS)
cmd_cxx_to_host = $(HOSTCXX) -std=gnu++17 $(HOST_CXXFLAGS) \
		-MMD -MF $@.d -MT $@ -o $@ \
		$(sort $(foreach c,$($(*F)-objs),util/$(c:%.o=%.cc)) $(wildcard $*.cc)) $(HOST_LDFLAGS)
cmd_o_to_a = $(AR) rcs $@ $^
cmd_host_test = $(MAKE) BOARD=host PROJECT=$* \
	V=$(V) out=build/host/$* TEST_BUILD=y EMU_BUILD=y CROSS_COMPILE= \
	$(if $(TEST_SCRIPT),TEST_SCRIPT=$(TEST_SCRIPT)) $(TEST_FLAG) \
	build/host/$*/$*.exe
cmd_coverage_test = $(subst build/host,build/coverage,$(cmd_host_test))
cmd_run_host_test = ./util/run_host_test $* $(silent)
cmd_run_coverage_test = ./util/run_host_test --coverage $* $(silent)
# generate new version.h, compare if it changed and replace if so
cmd_version = ./util/getversion.sh > $@.tmp && \
	cmp -s $@.tmp $@ && rm -f $@.tmp || mv $@.tmp $@
cmd_vif = $(out)/util/genvif -b $(BOARD) -o $(out) \
	  -v board/$(BOARD)/vif_override.xml
cmd_mv_from_tmp = mv $(out)/$*.bin.tmp $(out)/$*.bin
cmd_extractrw-y = dd if=$(out)/$(PROJECT).bin.tmp of=$(out)/$(PROJECT).RW.bin \
	       bs=1 count=$(_rw_size) skip=$(_rw_off) $(silent_err)
cmd_copyrw-y = cd $(out) && cp RW/$(PROJECT).RW.flat RW/$(PROJECT).RW.bin
cmd_sharedlib_elf = $(CC) $(libsharedobjs_deps) \
	-Wl,-T,common/ec.$(SHOBJLIB).ld $(LDFLAGS) \
	-o $(out)/$(SHOBJLIB)/$(SHOBJLIB).elf \
	-Wl,-Map,$(out)/$(SHOBJLIB)/$(SHOBJLIB).map
cmd_c_to_taskinfo = $(BUILDCC) \
	$(filter-out -DSECTION_IS_$(BLD)=$(EMPTY),$(BUILD_CFLAGS)) \
	-DSECTION_IS_$(3)=$(EMPTY) -MMD -MF $@.d -c $< -flto -MT $@ -o $@
cmd_link_taskinfo = $(BUILDCC) $(BUILD_CFLAGS) --shared -fPIC $^ \
	$(BUILD_LDFLAGS) -flto -o $@
cmd_proto_to_cxx = $(PROTOC) -I. --cpp_out=$(out)/gen $^

cmd_tp_hash = $(out)/util/gen_touchpad_hash \
		$(if $(TOUCHPAD_FW),-f $(TOUCHPAD_FW)) -o $@

cmd_emmc_bootblock = $(out)/util/gen_emmc_transfer_data \
		-i $(BOOTBLOCK) -o $@

cmd_ipi_table = $(out)/util/gen_ipi_table $@
cmd_cp_script = cp "$<" "$@" && chmod +x "$@"

# commands for RSA signature: rwsig does not need to sign the whole image
# (it signs the RW part separately). usbpd1 type needs to sign the final image.
ifeq ($(CONFIG_RWSIG_TYPE_RWSIG),)
	cmd_rsasign = futility sign --type usbpd1 --pem $(PEM) $(out)/$*.bin.tmp
else
	cmd_rsasign =
endif

cmd_key_extract = futility create $(PEM) $(out)/$* $(silent)

cmd_rsasign_rwsig = futility sign --type rwsig \
                                    --prikey $(out)/key.vbprik2 $< $@

# commands to build optional xref files
cmd_deps_to_list = cat $(deps) | tr -d ':\\' | tr ' ' '\012' \
	| egrep '\.[chS]$$' | sort | uniq > $@
cmd_etags = etags -o $@ $(shell cat $<)
cmd_ctags = ctags -o $@ $(shell cat $<)
targ_if_prog = $(if $(shell which $(1) 2>/dev/null),$(2),)

# If outputing to tty and column command exists, pipe into column.
# Otherwise, print in newline format.
cmd_pretty_print_cmd = @$(1) \
				| { [ -t 1 ]                         \
				    && which column 1>/dev/null 2>&1 \
				    && column || cat ; }
cmd_pretty_print_list = $(call cmd_pretty_print_cmd,echo $(1) | tr ' ' '\n')

# By default, the "build_boards" and "try_build_boards" targets will build all
# of the boards listed in $(boards). However, the invoker can provide a
# different list via the BOARDS variable. Providing an empty value for BOARDS
# is not allowed.
BOARDS ?= $(boards)
ifeq ($(BOARDS),)
$(error BOARDS must be non-empty)
endif

FAILED_BOARDS_DIR = .failedboards
# When building with -j, it's easy to miss errors. If you don't have your shell
# configured to warn you about nonzero exit, you may not even notice that "make
# buildall -j" failed. To make it more obvious, we'll do one level of recursion
# here.
.PHONY: try_build_boards
try_build_boards: $(foreach b, $(BOARDS), proj-$(b))

.PHONY: build_boards
build_boards: | $(FAILED_BOARDS_DIR)
	@rm -f $(FAILED_BOARDS_DIR)/*
	$(MAKE) try_build_boards

.PHONY: buildall_only
buildall_only: build_boards

.PHONY: buildall
buildall: buildall_only
	@echo "$@ completed successfully!"
	$(call cmd_stats,RO)
	$(call cmd_stats,RW)
	@echo "Tightest boards' RW RAM images, bytes free:"
	@grep . build/*/RW/space_free_ram.txt | \
	 sed 's,build/\([^/]*\)/RW/space_free_ram.txt:\(.*\)$$,\2 \1,' | \
	 sort -n | head -3 | while read size board; do \
		printf "%-10s: %6d\n" $$board $$size; \
	 done

.PHONY: print-boards
print-boards:
	$(call cmd_pretty_print_list,\
		$(sort $(boards)))

# Print any important notices at the end of the build.
.PHONY: notice
notice: $(config)
ifeq ($(CONFIG_EXPERIMENTAL_CONSOLE),y)
ifeq ($(TEST_BUILD),)
	@echo "*** NOTE: The experimental console is ENABLED. ***"
	@echo "You will need to run the EC-3PO interactive console in the util"
	@echo "directory!  Otherwise, you won't be able to enter any commands."
endif # not a TEST_BUILD
endif # CONFIG_EXPERIMENTAL_CONSOLE=y
#	TODO(b/195718112): Disable config option check as it's
#	suspected to be breaking the CQ. We should consider enabling
#	as a pre-submit only when re-enabling.
#	$(call quiet,check_allowed)

proj-%: | $(FAILED_BOARDS_DIR)
	@touch $(FAILED_BOARDS_DIR)/$*
	@echo "======= building $*"
	$(MAKE) BOARD=$* V=$(V)
	@rm $(FAILED_BOARDS_DIR)/$*

tests-%:
	@echo "======= building $* tests"
	$(MAKE) BOARD=$* V=$(V) tests

dis-y := $(out)/RW/$(PROJECT).RW.dis
dis-$(CONFIG_FW_INCLUDE_RO) += $(out)/RO/$(PROJECT).RO.dis
dis-$(CONFIG_SHAREDLIB) += $(out)/$(SHOBJLIB)/$(SHOBJLIB).dis
dis: $(dis-y)
.PHONY: dis

hex-y := $(out)/RO/$(PROJECT).RO.hex $(out)/RW/$(PROJECT).RW.hex $(out)/$(PROJECT).hex
hex-$(CONFIG_RW_B) += $(out)/RW/$(PROJECT).RW_B.hex
hex: $(hex-y)
.PHONY: hex

# Unless V is set to 0 we always want the 'size:' target to report its output,
# there is no point in generating a short form command trace when calculating
# size.
# $1: 'RO' or 'RW'
ifeq ($(V),0)
cmd_size=
else
cmd_size=$(Q)awk '\
  /__flash_used =/ {flash_used = strtonum($$1)} \
  /^FLASH / {flash_size = strtonum($$3)} \
  /__ram_free =/ {ram_free = strtonum($$1)} \
  END {room_free = flash_size - flash_used; \
       print ram_free > "$(out)/$(1)/space_free_ram.txt"; \
       printf "  *** "; \
       if (flash_size > 0) { \
         print room_free > "$(out)/$(1)/space_free_flash.txt"; \
         printf ("%s bytes in flash and ", room_free);\
       } \
       printf ("%s bytes in RAM still available on $(BOARD) $(1) ****\n", \
           ram_free) \
  }' $(out)/$(1)/$(PROJECT).$(1).map
endif

# List the smallest free flash spaces
# $1: 'RO' or 'RW'
cmd_stats= \
  $(Q)echo "Smallest free spaces in $(1) flash (bytes):"; \
  grep . build/*/$(1)/space_free_flash.txt | \
  sed 's,build/\([^/]*\)/$(1)/space_free_flash.txt:\(.*\)$$,\2 \1,' | \
  sort -n | head -3 | \
  while read size board; do \
	printf "%-10s: %6d\n" $$board $$size; \
  done

$(out)/libec.a: $(ro-objs)
	$(call quiet,libec,BUILD )

$(out)/firmware_image.lds: common/firmware_image.lds.S
	$(call quiet,lds,LDS    )
$(out)/%.lds: core/$(CORE)/ec.lds.S
	$(call quiet,lds,LDS    )

$(out)/%_B.lds: core/$(CORE)/ec.lds.S
	$(call quiet,lds_b,LDS_B  )

$(out)/%.bin: $(out)/%.obj
	$(call quiet,obj_to_bin,OBJCOPY)
	$(if $(wildcard $(PEM)),$(call quiet,rsasign,SIGN   ),)
	$(if $(wildcard $(PEM)),$(call quiet,extractrw-y,EXTR_RW), \
			$(call quiet,copyrw-y,COPY_RW))
	$(call quiet,mv_from_tmp,MV     )

$(out)/$(BOARD)_vif.xml: $(out)/util/genvif board/$(BOARD)/vif_override.xml
	$(call quiet,vif,VIF    )

flat-y := $(out)/RW/$(PROJECT).RW.flat
flat-$(CONFIG_FW_INCLUDE_RO) += $(out)/RO/$(PROJECT).RO.flat

deps += $(out)/firmware_image.lds.d $(flat-y:%.flat=%.lds.d)

flat-$(CONFIG_DRAM_BASE) += $(out)/RW/$(PROJECT).RW.flat.dram

flat-$(CONFIG_RWSIG_TYPE_RWSIG) += $(out)/key.vbpubk2
flat-$(CONFIG_RWSIG_TYPE_RWSIG) += $(out)/RW/$(PROJECT).RW.flat.sig

flat-$(CONFIG_SHAREDLIB) += $(libsharedobjs-y)

$(out)/$(PROJECT).obj: common/firmware_image.S $(out)/firmware_image.lds \
	$(flat-y)
	$(call quiet,flat_to_obj,CAT    )

$(out)/%.dis: $(out)/%.elf
	$(call quiet,elf_to_dis,OBJDUMP)

$(out)/RW/%.hex: $(out)/RW/%.elf $(out)/RW/%.smap
	$(call quiet,elf_to_hex,OBJCOPY)

ifeq ($(SIGNED_IMAGES),)
$(out)/%.flat: $(out)/%.elf $(out)/%.smap $(build-utils)
	$(call quiet,ec_elf_to_flat,OBJCOPY)

$(out)/%.flat.dram: $(out)/%.elf $(out)/%.smap $(build-utils)
	$(call quiet,ec_elf_to_flat_dram,OBJCOPY)

$(out)/RO/%.hex: $(out)/RO/%.elf $(out)/RO/%.smap
	$(call quiet,elf_to_hex,OBJCOPY)
else
$(out)/RO/%.flat: $(out)/RO/%.elf  $(out)/RO/%.smap
	$(call quiet,elf_to_signed,RO_SIGN,$(CR50_RO_KEY))

$(out)/RW/%.flat: $(out)/RW/%.elf  $(out)/RW/%.smap
	$(call quiet,elf_to_signed,RW_SIGN,$(CR50_RW_KEY))

$(out)/RO/%.hex: $(out)/RO/%.flat
	$(call quiet,bin_to_hex,OBJCOPY)
endif
$(out)/$(PROJECT).hex: $(out)/$(PROJECT).bin
	$(call quiet,bin_to_hex,OBJCOPY)

$(out)/%.vbprik2 $(out)/%.vbpubk2: $(PEM)
	$(call quiet,key_extract,KEY    )

$(out)/RW/%.flat.sig: $(out)/RW/%.flat $(out)/key.vbprik2
	$(call quiet,rsasign_rwsig,SIGN   )

$(out)/RW/%.elf: override BLD:=RW
$(out)/RW/%.elf: private objs := $(rw-objs)
$(out)/RW/%.elf: $(out)/RW/%.lds $(rw-objs) $(libsharedobjs_elf-y)
	$(call quiet,elf,LD     )

$(out)/RO/%.elf: override BLD:=RO
$(out)/RO/%.elf: private objs := $(ro-objs)
$(out)/RO/%.elf: $(out)/RO/%.lds $(ro-objs) $(libsharedobjs_elf-y)
	$(call quiet,elf,LD     )

$(out)/%.elf: $(out)/%.lds $(objs)
	$(call quiet,elf,LD     )

$(out)/$(SHOBJLIB)/$(SHOBJLIB).elf: $(sharedlib-objs)
	@mkdir -p $(out)/$(SHOBJLIB)
	$(call quiet,sharedlib_elf,LD     )

$(out)/%.smap: $(out)/%.elf
	$(call quiet,smap,NM     )

ifeq ($(TEST_FUZZ),y)
$(out)/$(PROJECT).exe: $(rw-only-objs) $(out)/libec.a
	$(call quiet,fuzz_exe,EXE    )
else ifneq ($(TEST_SCRIPT),)
$(out)/$(PROJECT).exe: test/$(TEST_SCRIPT) | $(ro-objs)
	$(call quiet,cp_script,CP     )
else
$(out)/$(PROJECT).exe: $(ro-objs)
	$(call quiet,exe,EXE    )
endif

$(out)/RO/%.o.cmd:%.c
	$(file > $@,$(subst .o.cmd,.o,$(cmd_c_to_o)))
$(out)/RO/%.o:%.c
	$(call quiet,c_to_o,CC     )
$(out)/RW/%.o:%.c
	$(call quiet,c_to_o,CC     )

$(out)/RO/%.o:%.cc
	$(call quiet,cxx_to_o,CXX    )
$(out)/RW/%.o:%.cc
	$(call quiet,cxx_to_o,CXX    )

$(out)/RO/%.pb.o: CXXFLAGS+= -Wno-unreachable-code
$(out)/RO/%.pb.o:$(out)/gen/%.pb.cc
	$(call quiet,cxx_to_o,CXX    )
$(out)/RW/%.pb.o: CXXFLAGS+= -Wno-unreachable-code
$(out)/RW/%.pb.o:$(out)/gen/%.pb.cc
	$(call quiet,cxx_to_o,CXX    )
$(out)/gen/%.pb.cc:%.proto
	$(call quiet,proto_to_cxx,PROTOC )
$(out)/gen/%.pb.h:%.proto
	$(call quiet,proto_to_cxx,PROTOC )

$(out)/$(SHOBJLIB)/%.o: override LATE_CFLAGS_DEFINE:=-DSHAREDLIB_IMAGE=$(EMPTY)
$(out)/$(SHOBJLIB)/%.o:%.c
	$(call quiet,c_to_o,CC     )

$(out)/RO/%.o:%.S
	$(call quiet,c_to_o,AS     )
$(out)/RW/%.o:%.S
	$(call quiet,c_to_o,AS     )

# Default rules for archives, dependencies need to be fixes in build.mk
$(out)/RO/%.a:
	$(call quiet,o_to_a,AR     )
$(out)/RW/%.a:
	$(call quiet,o_to_a,AR     )

# Conditionally force the rebuilding of ec_version.h only if it would be
# changed.
old_version_hash := $(shell cat $(out)/ec_version.h 2> /dev/null | md5sum -)
new_version_hash := $(shell BOARD=$(BOARD) ./util/getversion.sh | md5sum -)

ifneq ($(old_version_hash),$(new_version_hash))
.PHONY: $(out)/ec_version.h
endif

# All of the objects have an order only dependency on the ec_version header.
# This ensures that if ec_version.h needs to be built (because it was marked
# PHONY above) then it will be rebuilt before any objects.  This is important
# because some source files will include ec_version.h and fail to compile if
# it doesn't already exist.  This dependency shouldn't be a normal dependency
# because that would cause every object to be rebuilt when ec_version.h
# changes, instead of just the ones that actually depend on it.  The objects
# that truly depend on ec_version.h will have that information encoded in their
# .d file.
$(ro-objs): | $(out)/ec_version.h
$(rw-objs): | $(out)/ec_version.h
$(sharedlib-objs): | $(out)/ec_version.h

$(out)/ec_version.h:
	$(call quiet,version,VERSION)

$(out)/cscope.files: $(out)/$(PROJECT).bin
	$(call quiet,deps_to_list,SH     )

$(out)/TAGS: $(out)/cscope.files
	$(call quiet,etags,ETAGS  )

$(out)/tags: $(out)/cscope.files
	$(call quiet,ctags,CTAGS  )

.PHONY: xrefs
xrefs: $(call targ_if_prog,etags,$(out)/TAGS) \
	$(call targ_if_prog,ctags,$(out)/tags)

# Print variables identifying and providing Makefile-specific
# configuration for each board. The format is one variable per line,
# in the format KEY=VALUE.
.PHONY: print-make-vars
print-make-vars:
	@echo "BASEBOARD=${BASEBOARD}"
	@echo "CHIP=${CHIP}"
	@echo "CHIP_FAMILY=${CHIP_FAMILY}"
	@echo "CHIP_VARIANT=${CHIP_VARIANT}"
	@echo "CORE=${CORE}"

.PHONY: print-configs
print-configs:
	@echo "----------------------------------------------------------------"
	@echo "| RO Config:                                                   |"
	@echo "----------------------------------------------------------------"
	@$(CPP) $(CPPFLAGS) -P -dM -Ichip/$(CHIP) -I$(BASEDIR) -I$(BDIR) \
		-DSECTION_IS_RO=$(EMPTY) include/config.h | \
		grep "#define CONFIG_" | cut -c9- | sort
	@echo "----------------------------------------------------------------"
	@echo "| RW Config:                                                   |"
	@echo "----------------------------------------------------------------"
	@$(CPP) $(CPPFLAGS) -P -dM -Ichip/$(CHIP) -I$(BASEDIR) -I$(BDIR) \
		-DSECTION_IS_RW=$(EMPTY) include/config.h | \
		grep "#define CONFIG_" | cut -c9- | sort

.PHONY: print-defines
print-defines: BLD ?= RW
print-defines:
	$(call cmd_pretty_print_cmd,echo $(CFLAGS) | tr '[:space:]' '\n' | \
		sort -u | grep -- '^-D' | sed 's/^-D//' | sed 's/=$$//')

.PHONY: print-includes
print-includes:
	$(call cmd_pretty_print_cmd,echo $(CFLAGS) | tr '[:space:]' '\n' | \
		sort -u | grep -- '^-I' | sed 's/^-I//')

.PHONY: clean
clean:
	-rm -rf $(out)

.PHONY: clobber
clobber:
	-rm -rf build TAGS cscope.files cscope.out
ifneq ($(CCACHE),)
	$(CCACHE) -c
endif

.PHONY: help
help:
	@echo "Google Chromium EC build"
	@echo ""
	@echo "Common Targets:"
	@echo "  all   [BOARD=]       - Build a single board (Default target)"
	@echo "  clean [BOARD=]       - Clean a single board"
	@echo "  buildall             - Build all boards and build/run host unit tests"
	@echo "  buildall_only        - Build all boards and host unit tests"
	@echo "  build_boards         - Build all boards"
	@echo "  clobber              - Clean all boards"
	@echo "  proj-<boardname>     - Build a single board (similar to 'all BOARD=boardname')"
	@echo "  savesizes            - Save the filesizes of currently built boards for comparison"
	@echo "  newsizes             - Compare previously saved filesizes against new sizes"
	@echo "  utils [BOARD=]       - Build all host side utilities"
	@echo "  dis   [BOARD=]       - Generate the complete disassembly of the RO and RW images"
	@echo "  hex   [BOARD=]       - Generate an Intel hex formated output binary"
	@echo ""
	@echo "  tests [BOARD=]       - Build all on-device unit tests for a specific board"
	@echo "  hosttests            - Build all host unit tests"
	@echo "  runhosttests         - Build and run all host unit tests"
	@echo "  coverage             - Build and run all host unit tests for code coverage"
	@echo "  buildfuzztests       - Build all host fuzzers"
	@echo "  runfuzztests         - Build and run all host fuzzers for one round"
	@echo "  analyzestack [BOARD=]- Run max stack size analysis"
	@echo ""
	@echo "  flash     [BOARD=]   - Use OpenOCD to flash the latest image"
	@echo "  flash_ec  [BOARD=]   - Use flash_ec to flash the latest image"
	@echo "  flash_dfu [BOARD=]   - Use DFU to flash the latest image"
	@echo ""
	@echo "  print-tests     [BOARD=]     - Print on-device test targets"
	@echo "  print-host-tests             - Print all host unit test targets"
	@echo "  print-host-fuzzers           - Print all host fuzz targets"
	@echo "  print-boards                 - Print all boards"
	@echo "  print-configs   [BOARD=]     - Print CONFIG_* options for the target board"
	@echo "  print-defines   [BOARD=]     - Print forced defines passed to the compiler"
	@echo "  print-includes  [BOARD=]     - Print include paths passed to the compiler"
	@echo "  print-baseboard [BOARD=]     - Print include paths passed to the compiler"
	@echo "  print-make-vars [BOARD=]     - Print chip/core/board make variables for a board"
	@echo ""
	@echo "Common Variables:"
	@echo "  V=1                  - Show make output"
	@echo "  BOARD=               - Set the board name to build (Default is $(BOARD))"
	@echo "  STATIC_VERSION=1     - Force a constant version string for reproducable builds"
	@echo "  CROSS_COMPILE=       - Set the compiler for the board"
	@echo "  CROSS_COMPILE_arch=  - Set the compiler for arch"
	@echo "     The board picks its CROSS_COMPILE_arch if CROSS_COMPILE is not set."
	@echo "     arch may be one of 'arm', 'i386', 'nds32'."
	@echo "  HOST_CROSS_COMPILE=  - Set the compiler for the target platform on top of"
	@echo "     the EC. For example, this may be 32-bit x86 linux ('i686-pc-linux-gnu-'),"
	@echo "     64-bit x86 linux ('x86_64-pc-linux-gnu-'), or maybe 64-bit ARM linux"
	@echo "     ('aarch64-cros-linux-gnu-')."
	@echo "Example:"
	@echo "  make BOARD=reef CROSS_COMPILE_arm='arm-eabi-'"

.PHONY: savesizes
savesizes:
	@grep . build/*/*/space_free_*.txt | \
		sed 's,\(.*\).txt:\(.*\),\2 \1,' | sort --key 2 > \
		$(FLATSIZE_FILE)
	@if [ -s $(FLATSIZE_FILE) ]; then \
		echo "Saved sizes for $$(cat $(FLATSIZE_FILE) | wc -l) files"; \
	else \
		echo "Error: No file sizes saved.  Are they built?"; \
	fi

.PHONY: newsizes
newsizes:
	@if [ ! -s "$(FLATSIZE_FILE)" ]; then \
		echo "Error: no saved size file ($(FLATSIZE_FILE))."; \
		echo " Run 'make savesizes' first"; \
		exit 1; \
	fi
	@FILES_CHANGED=0; \
	FILES_IN_LIST=0; \
	FILES_COMPARED=0; \
	FILE_SIZE_CHANGE=0; \
	NEW_SIZES=$$(grep . build/*/*/space_free_*.txt | \
		sed 's,\(.*\).txt:\(.*\),\2 \1,'); \
	while read -r -u 10 line; do \
		FILES_IN_LIST=$$((FILES_IN_LIST+1)); \
		FLATFILE=$$(echo "$$line" | cut -f2 -d ' '); \
		FLATSIZE_ORG=$$(echo "$$line" | cut -f1 -d ' '); \
		FLATSIZE_NEW="$$(grep "$$FLATFILE" <<< "$$NEW_SIZES" | \
			sed 's/ .*$$//')"; \
		if [ -n "$$FLATSIZE_NEW" ]; then \
			FILES_COMPARED=$$((FILES_COMPARED+1)); \
			if [ "$$FLATSIZE_NEW" -gt "$$FLATSIZE_ORG" ]; then \
				FILES_CHANGED=$$((FILES_CHANGED+1)); \
				FILE_SIZE_CHANGE=$$((FILE_SIZE_CHANGE+ \
				FLATSIZE_NEW-FLATSIZE_ORG)); \
				printf "%s grew by %s bytes: (%d to %d)\n" \
					"$$FLATFILE" \
					"$$((FLATSIZE_NEW-FLATSIZE_ORG))" \
					"$$FLATSIZE_ORG" "$$FLATSIZE_NEW"; \
			elif [ "$$FLATSIZE_NEW" -lt "$$FLATSIZE_ORG" ]; then \
				FILES_CHANGED=$$((FILES_CHANGED+1)); \
				FILE_SIZE_CHANGE=$$((FILE_SIZE_CHANGE+ \
				FLATSIZE_NEW-FLATSIZE_ORG)); \
				printf "%s shrank by %s bytes: (%d to %d)\n" \
					"$$FLATFILE" \
					"$$((FLATSIZE_ORG-FLATSIZE_NEW))" \
					"$$FLATSIZE_ORG" "$$FLATSIZE_NEW"; \
			fi; \
		fi; \
	done 10< "$(FLATSIZE_FILE)"; \
	echo "Compared $$FILES_COMPARED of $$FILES_IN_LIST files."; \
	if [ $$FILES_COMPARED -ne 0 ] && [ $$FILES_CHANGED -eq 0 ]; then \
		echo "File sizes are unchanged."; \
	else \
		printf "%d files changed.\n" "$$FILES_CHANGED"; \
		printf "Total size change: %s bytes.\n" "$$FILE_SIZE_CHANGE"; \
		printf "Average size change: %d bytes.\n" \
			"$$((FILE_SIZE_CHANGE / FILES_CHANGED))"; \
	fi

# The reason why don't add elf files as dependencies, but ask users to build
# them first is because elf dependencies will cause the elf files be rebuilt for
# updating date, which shouldn't happen when analyzing the existing firmwares.
.PHONY: analyzestack
ANNOTATION ?= ./$(BDIR)/analyzestack.yaml
analyzestack: $(out)/util/export_taskinfo.so
	@if [ "$(SECTION)" != "RO" ] && [ "$(SECTION)" != "RW" ]; then \
		echo "Please specify SECTION=RO or RW. The default is RW."; \
		SECTION="RW"; \
	fi; \
	ELF=$(out)/$$SECTION/ec.$$SECTION.elf; \
	EXPORT_TASKINFO=$(out)/util/export_taskinfo.so; \
	if [ ! -f "$$ELF" ]; then \
		echo "Some files are missing.  Are they built?"; \
		exit 1; \
	fi; \
	extra/stack_analyzer/stack_analyzer.py --objdump "$(OBJDUMP)" \
	        --addr2line "$(ADDR2LINE)" --section "$$SECTION" \
	        --annotation $(ANNOTATION) \
	        --export_taskinfo "$$EXPORT_TASKINFO" "$$ELF"

# Calculate size of remaining room in flash, using variables generated by
# linker.
size: $(out)/$(PROJECT).bin
ifneq ($(CONFIG_FW_INCLUDE_RO),)
	$(call cmd_size,RO)
endif
	$(call cmd_size,RW)

# Print the smallest spaces in flash
stats: build_boards
	$(call cmd_stats,RO)
	$(call cmd_stats,RW)


out_cros_ec_commands=build/kernel/include/linux/mfd/cros_ec_commands.h
.PHONY: build_cros_ec_commands
build_cros_ec_commands: $(out_cros_ec_commands)


$(out_cros_ec_commands): include/ec_commands.h util/make_linux_ec_commands_h.sh
	util/make_linux_ec_commands_h.sh $< $@

# Pull in special rules/targets for third_party software
-include third_party/rules.mk

.SECONDARY:

-include $(deps)