tasks/bootloader.mk: Add make recipes for EDK2 (UEFI)

When a device's BoardConfig.mk specifies a makefile using the
CUSTOM_BOOTLOADER_MAKEFILE variable, that makefile can build
EDK2 (UEFI) ROMS by invoking the MAKE_EDK2_ROM recipe like:

$(eval $(call MAKE_EDK2_ROM,platform,build-dir,rom-image,install-name))

platform      Platform file (.dsc file). Can be abused to add trailing
              build commands.
build-dir     Directory, under $(PRODUCT_OUT))/obj/uefi, for build
              products.
rom-image     Rom image name (from .fdf file) converted to upper-case.
install-name  Name to copy ROM to.

Change-Id: I4ca33647ac4825a8bf7845c20832e43bb7ecb19d
Signed-off-by: Jon Medhurst <tixy@linaro.org>

1 files changed, 142 insertions, 1 deletions

diff --git a/tasks/bootloader.mk b/tasks/bootloader.mk
index 0b39937..1815d39 100644
--- a/tasks/bootloader.mk
+++ b/tasks/bootloader.mk
@@ -1,5 +1,6 @@
 # Rules for building bootloaders
 
+BOOTLOADER_OUT = $(realpath $(PRODUCT_OUT))/boot
 BOOTLOADER_TARGETS :=
 
 # Bootloaders have their own separate makefiles and we don't track the
@@ -40,7 +41,7 @@ UBOOT_FLAVOUR_TARGETS :=
 $(foreach _ub,$(UBOOT_FLAVOURS),                      \
     $(eval _config := $(call word-colon,1,$(_ub)))    \
     $(eval _binary := $(call word-colon,2,$(_ub)))    \
-    $(eval _target := $(PRODUCT_OUT)/boot/$(_binary)) \
+    $(eval _target := $(BOOTLOADER_OUT)/$(_binary))   \
     $(eval $(call MAKE_UBOOT,$(_target),$(_config)))  \
     $(eval UBOOT_FLAVOUR_TARGETS += $(_target))       \
     )
@@ -48,9 +49,149 @@ $(foreach _ub,$(UBOOT_FLAVOURS),                      \
 BOOTLOADER_TARGETS += $(UBOOT_FLAVOUR_TARGETS)
 
 
+#
+# UEFI
+#
+
+ifneq ($(UEFI_TOOLS_PREFIX),)
+# Used supplied prefix
+else
+ifneq ($(findstring prebuilt,$(TARGET_TOOLS_PREFIX)),)
+# The AOSP prebuilt toolchain is too old to compile UEFI, so we fall
+# back to a system compiler
+UEFI_TOOLS_PREFIX := arm-linux-gnueabi-
+else
+# UEFI is not an Android application and should be built with the bare
+# metal toolchain if it is available...
+UEFI_TOOLS_DIR = $(realpath $(dir $(TARGET_TOOLS_PREFIX)))/
+UEFI_TOOLS_PREFIX = $(UEFI_TOOLS_DIR)$(shell if [ -e $(UEFI_TOOLS_DIR)arm-eabi-gcc ]; then echo arm-eabi-; else echo $(notdir $(TARGET_TOOLS_PREFIX)); fi)
+# Use GNU linker if exists, as gold doesn't work...
+UEFI_TOOLS_LD := $(shell if [ -e $(UEFI_TOOLS_PREFIX)ld.bfd ]; then echo ld.bfd; else echo ld; fi)
+endif
+endif
+UEFI_TOOLS_LD ?= ld
+
+
+EDK2_OUT_DIR = $(realpath $(PRODUCT_OUT))/obj/uefi
+EDK2_WORKSPACE = $(realpath $(TOP)/uefi/edk2)
+EDK2_BASETOOLS := $(EDK2_WORKSPACE)/BaseTools
+EDK2_DEB_REL ?= RELEASE
+UEFI_ROM_TARGETS :=
+UEFI_ROM_INSTALL_TARGET :=
+
+
+#
+# EDK2 setup and tools
+#
+
+.PHONY : edk2_setup
+edk2_setup :
+	rm -f $(EDK2_WORKSPACE)/Conf/tools_def.txt
+	cd $(EDK2_WORKSPACE) && \
+	export WORKSPACE=$(EDK2_WORKSPACE) && \
+	export EDK_TOOLS_PATH=$(EDK2_BASETOOLS) && \
+	bash -c "$(EDK2_WORKSPACE)/edksetup.sh $(EDK2_WORKSPACE)"
+	sed -e "s/\(.*\)ENV(ARMLINUXGCC_TOOLS_PATH)arm-linux-gnueabi-ld\(.*\)/\1ENV(ARMLINUXGCC_TOOLS_PATH)arm-linux-gnueabi-$(UEFI_TOOLS_LD)\2/" -i $(EDK2_WORKSPACE)/Conf/tools_def.txt
+	sed -e "s/\(.*\)ENV(ARMLINUXGCC_TOOLS_PATH)arm-linux-gnueabi-\(.*\)/\1ENV(ARMLINUXGCC_TOOLS_PREFIX)\2/" -i $(EDK2_WORKSPACE)/Conf/tools_def.txt
+
+.PHONY : edk2_setup_clean
+edk2_setup_clean :
+	cd $(EDK2_WORKSPACE)/Conf && \
+	rm -f BuildEnv.sh build_rule.txt FrameworkDatabase.txt target.txt tools_def.txt
+
+
+.PHONY : edk2_tools
+edk2_tools : edk2_setup
+	$(MAKE) -j1 -C $(EDK2_BASETOOLS)
+
+.PHONY : edk2_tools_clean
+edk2_tools_clean :
+	$(MAKE) -j1 -C $(EDK2_BASETOOLS) clean
+
+
+# Note, the use of "export MAKEFLAGS=" in this rule is done to clear any
+# '-j' option which would be inherited by the make processes spawned by
+# the 'build' command. Without this, we get an error like:
+# "make[1]: *** read jobs pipe: Is a directory. Stop."
+#
+# We also make the rule for ROMs depend on each other in a chain (using
+# EDK2_PREVIOUS_ROM), this forces them to be built one at a time and
+# prevents the build error: "IntegrityError: PRIMARY KEY must be unique"
+
+define edk2_build
+
+$(1) : $(2) edk2_tools FORCE_BOOTLOADER_REMAKE | $(EDK2_PREVIOUS_ROM)
+	cd $$(EDK2_WORKSPACE) && \
+	export WORKSPACE=$$(EDK2_WORKSPACE) && \
+	export EDK_TOOLS_PATH=$$(EDK2_BASETOOLS) && \
+	export PATH=$$(EDK2_BASETOOLS)/BinWrappers/PosixLike:$$(PATH) && \
+	export ARMLINUXGCC_TOOLS_PREFIX=$$(UEFI_TOOLS_PREFIX) && \
+	export MAKEFLAGS= && \
+	build -N -a ARM -t ARMLINUXGCC -b $(EDK2_DEB_REL) -D EDK2_OUT_DIR=$(EDK2_OUT_DIR)/$(3) $(4)
+
+UEFI_ROM_TARGETS += $(1)
+EDK2_PREVIOUS_ROM = $(1)
+
+endef
+
+EDK2_PREVIOUS_ROM =
+
+
+.PHONY : edk2_build_clean
+edk2_build_clean :
+	rm -rf $(EDK2_WORKSPACE)/Conf/.cache
+	rm -rf $(EDK2_OUT_DIR)
+
+
+define edk2_install
+
+$(1) : $(2) $$(ACP)
+	@mkdir -p $$(dir $$@)
+	$$(ACP) -fpt $$< $$@
+
+UEFI_ROM_INSTALL_TARGET += $(1)
+
+endef
+
+
+.PHONY : edk2_clean
+edk2_clean : edk2_setup_clean edk2_tools_clean edk2_build_clean
+
+
+define edk2_rom_name
+$(EDK2_OUT_DIR)/$(1)/$(EDK2_DEB_REL)_ARMLINUXGCC/FV/$(2).fd
+endef
+
+
+#
+# Generate a rule to build an EDK2 UEFI ROM
+#
+# Usage: $(eval $(call MAKE_EDK2_ROM, platform-file, build-dir, rom-image, installed-name, dependencies))
+#
+# platform-file   Platform file (.dsc file). Can be abused to add trailing build commands.
+# build-dir       Directory, under $(EDK2_OUT_DIR), for build products.
+# rom-image       Rom image name (from .fdf file) converted to upper-case.
+# installed-name  Name to copy ROM to in boot directory.
+# dependencies    List of targets the rule depends on.
+#
+define MAKE_EDK2_ROM
+$(eval $(call edk2_build,$(call edk2_rom_name,$(2),$(3)),$(5),$(2),-p $(1) -r $(3)))
+$(eval $(call edk2_install,$(BOOTLOADER_OUT)/$(4),$(call edk2_rom_name,$(2),$(3))))
+endef
+
+
+#
+# Include custom makefiles
+#
 ifneq ($(CUSTOM_BOOTLOADER_MAKEFILE),)
 include $(TOP)/$(CUSTOM_BOOTLOADER_MAKEFILE)
 endif
 
 
+BOOTLOADER_TARGETS += $(UEFI_ROM_INSTALL_TARGET)
+
+.PHONY : uefi_roms
+uefi_roms : $(UEFI_ROM_TARGETS)
+
+
 $(INSTALLED_BOOTTARBALL_TARGET): $(BOOTLOADER_TARGETS)