Change in ...coreboot[master]: [WIP]LinuxBoot: refactor u-root.mk

[M Sylvester B (Code Review)]

M Sylvester B has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/29778

Change subject: [WIP]LinuxBoot: refactor u-root.mk
......................................................................

[WIP]LinuxBoot: refactor u-root.mk

Clean the u-root initramfs integration.

TODO:
- handle all u-root flags

Change-Id: Id978ed2ebeff96c5be4f74ae07df9be76e106a1b
Signed-off-by: Marcello Sylvester Bauer 
---
M payloads/external/LinuxBoot/Makefile
M payloads/external/LinuxBoot/targets/u-root.mk
2 files changed, 18 insertions(+), 41 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/78/29778/1

diff --git a/payloads/external/LinuxBoot/Makefile b/payloads/external/LinuxBoot/Makefile
index a9b35fc..456d846 100644
--- a/payloads/external/LinuxBoot/Makefile
+++ b/payloads/external/LinuxBoot/Makefile
@@ -58,7 +58,8 @@

clean:
    if [ -d "$(kernel_dir)" ]; then rm -rf $(kernel_dir); fi
-	rm -f $(project_dir)/initramfs.cpio.xz
+	rm -f $(project_dir)/u-root
+	rm -f $(project_dir)/initramfs_u-root.cpio.xz

distclean:
    rm -rf $(project_dir)
diff --git a/payloads/external/LinuxBoot/targets/u-root.mk b/payloads/external/LinuxBoot/targets/u-root.mk
index 5cb19bb..dc570b5 100644
--- a/payloads/external/LinuxBoot/targets/u-root.mk
+++ b/payloads/external/LinuxBoot/targets/u-root.mk
@@ -13,19 +13,18 @@
 ## GNU General Public License for more details.
 ##

-uroot_git_repo=https://github.com/u-root/u-root.git
-uroot_dir=$(project_dir)/go/src/github.com/u-root/u-root
 go_version=$(shell go version | sed -nr 's/.*go([0-9]+.[0-9]+.?[0-9]?).*/\1/p' )
 go_version_major=$(shell echo $(go_version) |  sed -nr 's/^([0-9]+).([0-9]+).?([0-9]*)$$/\1/p')
 go_version_minor=$(shell echo $(go_version) |  sed -nr 's/^([0-9]+).([0-9]+).?([0-9]*)$$/\2/p')

project_dir=$(shell pwd)/linuxboot
-project_name=u-root
-go_path_dir=$(shell pwd)/linuxboot/go
+go_path_dir=$(project_dir)/go
+uroot_bin=$(project_dir)/u-root
+uroot_package=github.com/u-root/u-root

all: u-root

-check:
+version:
 ifeq ("$(go_version)","")
    printf "\n<<Please install Golang >= 1.9 for u-root mode>>\n\n"
    exit 1
@@ -37,59 +36,36 @@
    exit 1
 endif
 endif
-	mkdir -p $(project_dir)/go/src/github.com/u-root

-$(uroot_dir)/.git:
-	echo "    Git        Cloning u-root $(CONFIG_LINUXBOOT_UROOT_VERSION)"
-	git clone $(uroot_git_repo) $(uroot_dir)
+get: version
+	GOPATH=$(go_path_dir) go get -u $(uroot_package)

-fetch: check $(uroot_dir)/.git
-	-cd "$(uroot_dir)" && git fetch origin
+checkout: get
+	git -C $(go_path_dir)/src/$(uroot_package) checkout $(CONFIG_LINUXBOOT_UROOT_VERSION)

-checkout: fetch
-	cd "$(uroot_dir)" && \
-	if ! git diff --quiet _cb_checkout "$(CONFIG_LINUXBOOT_UROOT_VERSION)" -- 2>/dev/null; \
-	then \
-		printf "    CHECKOUT    $(project_name) [$(CONFIG_LINUXBOOT_UROOT_VERSION)]\n"; \
-		git checkout $$(git rev-parse HEAD) >/dev/null 2>&1; \
-		git branch -f _cb_checkout "$(CONFIG_LINUXBOOT_UROOT_VERSION)" && \
-		git checkout _cb_checkout && \
-		$(if $(project_patches), \
-		for patch in $(project_patches); do \
-			printf "    PATCH       $$patch\n"; \
-			git am --keep-cr "$$patch" || \
-				( printf "Error when applying patches.\n"; \
-				  git am --abort; exit 1; ); \
-		done;,true;) \
-	fi
+build: checkout
+	GOPATH=$(go_path_dir) go build -o $(uroot_bin) $(uroot_package)

-$(uroot_dir)/u-root: $(uroot_dir)/u-root.go
-	echo "    GO        u-root"
-	cd $(uroot_dir); GOPATH=$(go_path_dir) go build u-root.go
-
-$(project_dir)/initramfs_u-root.cpio.xz: checkout $(uroot_dir)/u-root
-	echo "    MAKE       u-root $(CONFIG_LINUXBOOT_UROOT_VERSION)"
+u-root: build
 ifneq ($(CONFIG_LINUXBOOT_UROOT_COMMANDS),)
 ifneq ($(CONFIG_LINUXBOOT_UROOT_FILES),)
-	cd $(uroot_dir); GOARCH=$(CONFIG_LINUXBOOT_ARCH) GOPATH=$(go_path_dir) ./u-root \
+	GOARCH=$(CONFIG_LINUXBOOT_ARCH) GOPATH=$(go_path_dir) $(uroot_bin) \
    -build=bb -files $(CONFIG_LINUXBOOT_UROOT_FILES) -o $(project_dir)/initramfs_u-root.cpio \
    $(patsubst %,cmds/%,$(CONFIG_LINUXBOOT_UROOT_COMMANDS))
 else
-	cd $(uroot_dir); GOARCH=$(CONFIG_LINUXBOOT_ARCH) GOPATH=$(go_path_dir) ./u-root \
+	GOARCH=$(CONFIG_LINUXBOOT_ARCH) GOPATH=$(go_path_dir) $(uroot_bin) \
    -build=bb -o $(project_dir)/initramfs_u-root.cpio \
    $(patsubst %,cmds/%,$(CONFIG_LINUXBOOT_UROOT_COMMANDS))
 endif
 else
 ifneq ($(CONFIG_LINUXBOOT_UROOT_FILES),)
-	cd $(uroot_dir); GOARCH=$(CONFIG_LINUXBOOT_ARCH) GOPATH=$(go_path_dir) ./u-root \
+	GOARCH=$(CONFIG_LINUXBOOT_ARCH) GOPATH=$(go_path_dir) $(uroot_bin) \
    -build=bb -files $(CONFIG_LINUXBOOT_UROOT_FILES) -o $(project_dir)/initramfs_u-root.cpio coreboot-app
 else
-	cd $(uroot_dir); GOARCH=$(CONFIG_LINUXBOOT_ARCH) GOPATH=$(go_path_dir) ./u-root \
+	GOARCH=$(CONFIG_LINUXBOOT_ARCH) GOPATH=$(go_path_dir) $(uroot_bin) \
    -build=bb -o $(project_dir)/initramfs_u-root.cpio coreboot-app
 endif
 endif
    xz -f --check=crc32 -9 --lzma2=dict=1MiB --threads=$(CPUS) $(project_dir)/initramfs_u-root.cpio

-u-root: $(project_dir)/initramfs_u-root.cpio.xz
-
-.PHONY: u-root checkout fetch all check
+.PHONY: all u-root build checkout get version