# -*- makefile -*-
# vim: set filetype=make :
# Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
# 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
#

build-utils := $(foreach u,$(build-util-bin),$(out)/util/$(u))
host-utils := $(foreach u,$(host-util-bin),$(out)/util/$(u))
build-srcs := $(foreach u,$(build-util-bin),$(sort $($(u)-objs:%.o=util/%.c) util/$(u).c))
host-srcs := $(foreach u,$(host-util-bin),$(sort $($(u)-objs:%.o=util/%.c) util/$(u).c))

# Don't do a build test on the following boards:
skip_boards = OWNERS host it8380dev
boards := $(filter-out $(skip_boards),$(notdir $(wildcard board/* private*/board/*)))

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

# Decrease verbosity unless you pass V=1
quiet = $(if $(V),,@echo '  $(2)' $(subst $(out)/,,$@) ; )$(cmd_$(1))
silent = $(if $(V),,1>/dev/null)
silent_err = $(if $(V),,2>/dev/null)

# commands to build all targets
cmd_lds = $(CPP) -P -C -MMD -MF $@.d -MT $@ $(CPPFLAGS) $< -o $@
# 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) -T $(out)/firmware_image.lds -nostdlib $(CPPFLAGS) \
                  -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 \
				-O binary $< $@
cmd_elf_to_signed ?= $(out)/util/signer --key=util/signer/rom-testkey-A.pem \
	--input=$< --format=bin --output=$@.signed \
	&& mv $@.signed $@
cmd_elf_to_dis = $(OBJDUMP) -D $< > $@
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,$(patsubst %.elf,%.map,$@)
cmd_exe = $(CC) $(ro-objs) $(HOST_TEST_LDFLAGS) -o $@
cmd_c_to_o = $(CC) $(CFLAGS) -MMD -MF $@.d -c $< -o $(@D)/$(@F)
cmd_c_to_build = $(BUILDCC) $(BUILD_CFLAGS) \
	         $(sort $(foreach c,$($(*F)-objs),util/$(c:%.o=%.c)) $*.c) \
	         $(BUILD_LDFLAGS) \
	         -MMD -MF $@.d -o $@
cmd_c_to_host = $(HOSTCC) $(HOST_CFLAGS) -MMD -MF $@.d  -o $@ \
	         $(sort $(foreach c,$($(*F)-objs),util/$(c:%.o=%.c)) $*.c)
cmd_cxx_to_host = $(HOSTCXX) -std=c++0x $(COMMON_WARN) $(HOST_CXXFLAGS)\
	-I ./$($(notdir $@)_ROOT) -o $@ $(filter %.cc,$^) $($(notdir $@)_LIBS)
cmd_host_test = ./util/run_host_test $* $(silent)
cmd_version = ./util/getversion.sh > $@
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

# commands for RSA signature
cmd_rsasign = futility sign --type usbpd1 --pem $(PEM) $(out)/$*.bin.tmp

# 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),)

# 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_buildall
try_buildall: $(foreach b, $(boards), proj-$(b))

.PHONY: buildall
buildall:
	$(MAKE) try_buildall
	$(MAKE) runtests
	@touch .tests-passed
	@echo "$@ completed successfully!"

proj-%:
	@echo "======= building $*"; \
	$(MAKE) --no-print-directory BOARD=$* V=$(V)

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: $(hex-y)
.PHONY: hex

.PHONY: utils-host
utils-host: $(host-utils)

.PHONY: utils-build
utils-build: $(build-utils)

.PHONY: utils
utils: utils-host utils-build

# On board test binaries
test-targets=$(foreach t,$(test-list-y),test-$(t))
.PHONY: $(test-targets)

ifeq "$(CONFIG_COMMON_RUNTIME)" "y"
$(test-targets): test-%:
	@set -e ; \
	echo "  BUILD   $(out)/$*" ; \
	$(MAKE) --no-print-directory BOARD=$(BOARD) PROJECT=$* \
	        V=$(V) out=$(out)/$* TEST_BUILD=y; \
	cp $(out)/$*/$*.bin $(out)/test-$*.bin
endif

.PHONY: tests
tests: $(test-targets)

# Emulator test executables
host-test-targets=$(foreach t,$(test-list-host),host-$(t))
run-test-targets=$(foreach t,$(test-list-host),run-$(t))
.PHONY: $(host-test-targets) $(run-test-targets)

$(host-test-targets): host-%:
	@set -e ; \
	echo "  BUILD   host - build/host/$*" ; \
	$(MAKE) --no-print-directory BOARD=host PROJECT=$* \
	        V=$(V) out=build/host/$* TEST_BUILD=y EMU_BUILD=y $(TEST_FLAG) \
		CROSS_COMPILE= build/host/$*/$*.exe

$(run-test-targets): run-%: host-%
	$(call quiet,host_test,TEST   )

.PHONY: hosttests runtests
hosttests: $(host-test-targets)
runtests: $(run-test-targets)

cov-test-targets=$(foreach t,$(test-list-host),build/host/$(t).info)
bldversion=$(shell (./util/getversion.sh ; echo VERSION) | $(CPP) -P)

# lcov fails when multiple instances run at the same time.
# We need to run them sequentially by using flock
cmd_lcov=flock /tmp/ec-lcov-lock -c "lcov -q -o $@ -c -d build/host/$*"
cmd_report_cov=genhtml -q -o build/host/coverage_rpt -t \
	       "EC Unittest "$(bldversion) $^

build/host/%.info: run-%
	$(call quiet,lcov,COV    )

.PHONY: coverage
coverage: TEST_FLAG=TEST_COVERAGE=y
coverage: $(cov-test-targets)
	$(call quiet,report_cov,REPORT )

$(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)/%.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     )

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_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_RO_IMAGE),)
$(out)/%.flat: $(out)/%.elf $(out)/%.smap
	$(call quiet,ec_elf_to_flat,OBJCOPY)

$(out)/RO/%.hex: $(out)/RO/%.elf $(out)/RO/%.smap
	$(call quiet,elf_to_hex,OBJCOPY)
else
$(out)/RW/ec.RW.flat: $(out)/RW/ec.RW.elf
	$(call quiet,ec_elf_to_flat,OBJCOPY)
$(out)/RO/ec.RO.flat.raw: $(out)/RO/ec.RO.elf $(out)/RO/ec.RO.smap
	$(call quiet,ec_elf_to_flat,OBJCOPY)

$(out)/RO/ec.RO.flat: $(out)/RO/ec.RO.elf  $(out)/RO/ec.RO.smap
	$(call quiet,elf_to_signed,RO_SIGN)

$(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)/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     )

$(out)/$(PROJECT).exe: $(ro-objs)
	$(call quiet,exe,EXE    )

$(out)/RO/%.o:%.c
	$(call quiet,c_to_o,CC     )
$(out)/RW/%.o:%.c
	$(call quiet,c_to_o,CC     )

$(out)/$(SHOBJLIB)/%.o: override LATE_CFLAGS_DEFINE:=-DSHAREDLIB_IMAGE
$(out)/$(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     )


# 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)

$(build-utils): $(out)/%:$(build-srcs)
	$(call quiet,c_to_build,BUILDCC)

$(host-utils): $(out)/%:$(host-srcs)
	$(call quiet,c_to_host,HOSTCC )

$(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  )

# TODO: optional make rules for PROJECT_EXTRA
$(npcx-flash-fw-bin):
	$(if $(V),,@echo '  EXTBIN ' $(subst $(out)/,,$@) ; )
	-@ mkdir -p $(@D)
	-@ $(CC) $(CFLAGS) -MMD -MF $(out)/$(npcx-lfw).d -c $(npcx-flash-fw).c \
		-o $(out)/$(npcx-flash-fw).o
	-@ $(CC) $(out)/$(npcx-flash-fw).o $(LDFLAGS) \
		-o $(out)/$(npcx-flash-fw).elf -Wl,-T,$(npcx-flash-fw).ld \
		-Wl,-Map,$(out)/$(npcx-flash-fw).map
	-@ $(OBJCOPY) -O binary $(out)/$(npcx-flash-fw).elf $@

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

.PHONY: flash
flash: $(out)/ec.bin
	openocd -c "set BOARD $(BOARD)"\
		-c "set BUILD_DIR $(out)"\
		-f $(BDIR)/openocd-flash.cfg

.PHONY: flash_ec
flash_ec: $(out)/ec.bin
	./util/flash_ec --board $(BOARD) --image $(out)/ec.bin

.PHONY: flash_dfu
flash_dfu: $(out)/ec.bin
	sudo ./$(BDIR)/dfu $(out)/ec.bin

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

.PHONY: clobber
clobber:
	-rm -rf build TAGS cscope.files cscope.out

.SECONDARY:

-include $(deps)