##
## This file is part of the coreboot project.
##
## Copyright (C) 2017 Google Inc.
##
## This program is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
## the Free Software Foundation; version 2 of the License.
##
## This program is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
## GNU General Public License for more details.
##

# force the shell to bash - the edksetup.sh script doesn't work with dash
export SHELL := env bash

project_name=Tianocore
project_dir=$(CURDIR)/tianocore
project_git_repo=https://github.com/mrchromebox/edk2
project_git_branch=coreboot_fb
upstream_git_repo=https://github.com/tianocore/edk2

# STABLE revision is MrChromebox's coreboot framebuffer (coreboot_fb) branch
TAG-$(CONFIG_TIANOCORE_STABLE)=origin/$(project_git_branch)
TAG-$(CONFIG_TIANOCORE_REVISION)=$(CONFIG_TIANOCORE_REVISION_ID)

export EDK_TOOLS_PATH=$(project_dir)/BaseTools

ifeq ($(CONFIG_TIANOCORE_DEBUG),y)
BUILD_TYPE=DEBUG
else
BUILD_TYPE=RELEASE
endif

ifneq ($(CONFIG_TIANOCORE_USE_8254_TIMER), y)
TIMER=-DUSE_HPET_TIMER
endif

ifeq ($(CONFIG_TIANOCORE_TARGET_IA32), y)
	BUILD_STR=-a IA32 -t COREBOOT -p CorebootPayloadPkg/CorebootPayloadPkgIa32.dsc -b $(BUILD_TYPE) $(TIMER)
else
	BUILD_STR=-a IA32 -a X64 -t COREBOOT -p CorebootPayloadPkg/CorebootPayloadPkgIa32X64.dsc -b $(BUILD_TYPE) $(TIMER)
endif

all: clean build

$(project_dir):
	echo "    Cloning $(project_name) from Git"
	git clone --single-branch --branch $(project_git_branch) $(project_git_repo) $(project_dir); \
		cd $(project_dir); \
		git remote add upstream $(upstream_git_repo)

update: $(project_dir)
	cd  $(project_dir); \
		echo "    Fetching new commits from the $(project_name) repo"; \
		git fetch --multiple origin upstream 2>/dev/null; \
		if ! git rev-parse --verify -q $(TAG-y) >/dev/null; then \
			echo "    $(TAG-y) is not a valid git reference"; \
			exit 1; \
		fi; \
		if git describe --all --dirty | grep -qv dirty; then \
			echo "    Checking out $(project_name) revision $(TAG-y)"; \
			git checkout --detach $(TAG-y); \
		else \
			echo "    Working directory not clean; will not overwrite"; \
		fi

checktools:
	echo "Checking uuid-dev..."
	echo "#include <uuid/uuid.h>" > libtest.c
	echo "int main(int argc, char **argv) { (void) argc; (void) argv; return 0; }" >> libtest.c
	$(HOSTCC) $(HOSTCCFLAGS) libtest.c -o libtest >/dev/null 2>&1 && echo " found uuid-dev." || \
		( echo " Not found."; echo "ERROR: please_install uuid-dev (libuuid-devel)"; exit 1 )
	rm -rf libtest.c libtest
	echo "Checking nasm..."
	type nasm > /dev/null 2>&1 && echo " found nasm." || \
		( echo " Not found."; echo "Error: Please install nasm."; exit 1 )

build: update checktools
	unset CC; $(MAKE) -C $(project_dir)/BaseTools
	echo " build $(project_name) $(TAG-y)"
	cd $(project_dir); \
		export EDK_TOOLS_PATH=$(project_dir)/BaseTools; \
		export WORKSPACE=$(project_dir); \
		. ./edksetup.sh BaseTools; \
		grep -q "COREBOOT" $(project_dir)/Conf/tools_def.txt; \
		if [ $$? -ne 0 ]; then \
			cat ../tools_def.txt >> $(project_dir)/Conf/tools_def.txt; \
		fi; \
		build $(BUILD_STR); \
		mv $(project_dir)/Build/CorebootPayloadPkg*/*/FV/UEFIPAYLOAD.fd $(project_dir)/Build/UEFIPAYLOAD.fd

clean:
	test -d $(project_dir) && (cd $(project_dir); rm -rf Build; rm -f Conf/tools_def.txt) || exit 0

distclean:
	rm -rf $(project_dir)

.PHONY: all update checktools config build clean distclean