[S] Change in coreboot[main]: Makefiles: Download 3rdparty/chromeec when needed

[Martin L Roth (Code Review)]

Martin L Roth has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/81026?usp=email )

Change subject: Makefiles: Download 3rdparty/chromeec when needed
......................................................................

Makefiles: Download 3rdparty/chromeec when needed

This adds the basic functionality to download what was previously the
chromeec submodule. If the system is configured to build the ChromeEC
by enabling CONFIG_EC_GOOGLE_CHROMEEC_FIRMWARE_BUILTIN, it happens
automatically. The system can also be told to download the ChromeEC
codebase by setting the DOWNLOAD_CHROMEEC variable on the make command
line.

Signed-off-by: Martin Roth 
Change-Id: I1f23b9f98a7ab31ae3ea1cb5aac136ead50769d6
---
M .gitignore
A 3rdparty/Makefile.mk
M Makefile
M Makefile.mk
4 files changed, 30 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/26/81026/1

diff --git a/.gitignore b/.gitignore
index e813493..81fb11b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -12,6 +12,7 @@
 generated/

site-local
+3rdparty/chromeec

*.#
 *.a
diff --git a/3rdparty/Makefile.mk b/3rdparty/Makefile.mk
new file mode 100644
index 0000000..b762de3
--- /dev/null
+++ b/3rdparty/Makefile.mk
@@ -0,0 +1,26 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
+# Download the ChromeEC repository
+ifneq ($(DOWNLOAD_CHROMEEC)$(CONFIG_EC_GOOGLE_CHROMEEC_FIRMWARE_BUILTIN),)
+
+CHROMEEC_DIR := $(top)/3rdparty/chromeec
+
+ifeq ($(CONFIG_CHROMEEC_COMMIT),)
+  CONFIG_CHROMEEC_COMMIT := e486b388a7
+endif
+
+ifeq ($(wildcard $(CHROMEEC_DIR)),)
+  $(info Cloning ChromeEC repo)
+  CHROMEEC_GIT_TASK := $(shell git clone https://review.coreboot.org/chrome-ec.git $(CHROMEEC_DIR) 2>&1)
+  CHROMEEC_GIT_TASK += $(shell cd $(CHROMEEC_DIR) && git checkout $(CONFIG_CHROMEEC_COMMIT) 2>&1)
+else
+  CHROMEEC_GIT_TASK := $(shell cd $(CHROMEEC_DIR) && git fetch 2>&1)
+endif
+$(info $(CHROMEEC_GIT_TASK))
+
+endif # ($(CONFIG_EC_GOOGLE_CHROMEEC_FIRMWARE_BUILTIN),y)
+
+distclean-3rdparty:
+	rm -rf "$(CHROMEEC_DIR)"
+
+.PHONY: distclean-3rdparty
diff --git a/Makefile b/Makefile
index 412d6a6..fea0d67 100644
--- a/Makefile
+++ b/Makefile
@@ -165,6 +165,7 @@
 -include $(TOPLEVEL)/site-local/Makefile.mk
 -include $(TOPLEVEL)/site-local/Makefile.inc
 include $(TOPLEVEL)/tests/Makefile.mk
+include $(TOPLEVEL)/3rdparty/Makefile.mk
 printall real-all:
    @echo "Error: Trying to build, but NOCOMPILE is set." >&2
    @echo "  Please file a bug with the following information:"
@@ -534,7 +535,7 @@
    	$(MAKE) -C util/$(tool) distclean MFLAGS= MAKEFLAGS= ; \
    	rm -f /util/$(tool)/junit.xml;)

-distclean: clean clean-ctags clean-cscope distclean-payloads distclean-utils
+distclean: clean clean-ctags clean-cscope distclean-payloads distclean-utils distclean-3rdparty
    rm -f .config .config.old ..config.tmp* .kconfig.d .tmpconfig* .ccwrap .xcompile
    rm -rf coreboot-builds coreboot-builds-chromeos
    rm -f abuild*.xml junit.xml* util/lint/junit.xml
diff --git a/Makefile.mk b/Makefile.mk
index f7b98c7..fbfacc31 100644
--- a/Makefile.mk
+++ b/Makefile.mk
@@ -111,6 +111,7 @@
 subdirs-y += src/mainboard/$(MAINBOARDDIR)
 subdirs-y += src/security
 subdirs-y += payloads payloads/external
+subdirs-y += 3rdparty
 subdirs-$(CONFIG_SBOM) += src/sbom

subdirs-y += site-local