# -*- 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
#

objs := $(all-y)
deps := $(objs:%.o=%.o.d)
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 $(skip_boards),$(subst board/,,$(wildcard board/*)))

# Create output directories if necessary
_dir_create := $(foreach d,$(dirs),$(shell [ -d $(out)/$(d) ] || \
	    mkdir -p $(out)/$(d)))
_dir_y_create := $(foreach d,$(dirs-y),$(shell [ -d $(out)/$(d) ] || \
	    mkdir -p $(out)/$(d)))

section = $(subst .,,$(suffix $(1)))
section_is = $(subst .,,SECTION_IS_$(suffix $(1)))

# 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 $@ $(CPPFLAGS) \
          -D$(call section_is,$*) \
          -DSECTION=$(call section,$*) $< -o $@
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 $@ $<
cmd_elf_to_flat = $(OBJCOPY) -O binary $^ $@
cmd_elf_to_dis = $(OBJDUMP) -D $< > $@
cmd_elf_to_hex = $(OBJCOPY) -O ihex $^ $@
cmd_elf = $(LD) $(objs) $(LDFLAGS) -o $@ -T $< -Map $(out)/$*.map
cmd_exe = $(CC) $(objs) $(HOST_TEST_LDFLAGS) -o $@
cmd_c_to_o = $(CC) $(CFLAGS) -MMD -MF $@.d -c $< -o $@
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_host_test = ./util/run_host_test $* $(silent)
cmd_date = ./util/getdate.sh > $@
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 $(PROJECT).RW.flat $(PROJECT).RW.bin

# commands for RSA signature
cmd_pubkey = ./util/pem_extract_pubkey.py $(PEM) > $@
cmd_rsasign = ./util/ec_sign_rsa.py --$(RSA_KEY_SIZE) $(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),)

.PHONY: all tests utils utils-host utils-build hosttests

buildall: $(foreach b, $(boards), proj-$(b)) runtests
	@touch .tests-passed
	@echo "$@ completed successfully!"

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

dis-y = $(out)/$(PROJECT).RO.dis $(out)/$(PROJECT).RW.dis
dis: $(dis-y)

hex-y = $(out)/$(PROJECT).RO.hex $(out)/$(PROJECT).RW.hex
hex: $(hex-y)

utils-host: $(host-utils)

utils-build: $(build-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

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   )

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    )

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

.PHONY: coverage

$(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     )

# Beware of ec.spi.spi.bin.
$(out)/%.spi.bin: $(out)/%.bin
	$(call quiet,pack_package,PACK   )

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

$(out)/%.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)/%.flat: $(out)/%.elf
	$(call quiet,elf_to_flat,OBJCOPY)

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

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

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

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

$(out)/vboot/%.o:$(VBOOT_SOURCE)/%.c
	$(call quiet,c_to_o,CC     )

$(out)/%.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 build (because it was marked
# PHONY above) then it will be rebuilt before any objects.  This is important
# because some source files will include ev_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.
$(objs): | $(out)/ec_version.h

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

$(out)/common/version.o: $(out)/ec_date.h
$(out)/ec_date.h: $(filter-out $(out)/common/version.o,$(objs))
	$(call quiet,date,DATE   )

$(out)/gen_pub_key.h: $(PEM)
	$(call quiet,pubkey,PUBKEY )

$(out)/common/rwsig.o: $(out)/gen_pub_key.h

$(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  )

.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 $(out)"\
		-f board/$(BOARD)/openocd-flash.cfg

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

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

.SECONDARY:

-include $(deps)