From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Schwierzeck Date: Mon, 18 Jul 2011 18:09:15 +0200 Subject: [U-Boot] [PATCH v3 3/9] Extend build-system for SPL framework In-Reply-To: <1311005361-26241-1-git-send-email-daniel.schwierzeck@googlemail.com> References: <1310569869-31810-1-git-send-email-daniel.schwierzeck@googlemail.com> <1311005361-26241-1-git-send-email-daniel.schwierzeck@googlemail.com> Message-ID: <1311005361-26241-4-git-send-email-daniel.schwierzeck@googlemail.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Signed-off-by: Aneesh V Signed-off-by: Daniel Schwierzeck --- Changes since RFC v1: - enable garbage collect of unused sections for SPL unconditionally Changes since RFC v2: - none Makefile | 3 ++- config.mk | 34 +++++++++++++++++++++++++++++++++- 2 files changed, 35 insertions(+), 2 deletions(-) diff --git a/Makefile b/Makefile index 62c2078..9478059 100644 --- a/Makefile +++ b/Makefile @@ -104,10 +104,11 @@ $(if $(BUILD_DIR),,$(error output directory "$(saved-output)" does not exist)) endif # ifneq ($(BUILD_DIR),) OBJTREE := $(if $(BUILD_DIR),$(BUILD_DIR),$(CURDIR)) +SPLTREE := $(OBJTREE)/spl SRCTREE := $(CURDIR) TOPDIR := $(SRCTREE) LNDIR := $(OBJTREE) -export TOPDIR SRCTREE OBJTREE +export TOPDIR SRCTREE OBJTREE SPLTREE MKCONFIG := $(SRCTREE)/mkconfig export MKCONFIG diff --git a/config.mk b/config.mk index 2eb7fa2..ed44d03 100644 --- a/config.mk +++ b/config.mk @@ -23,19 +23,31 @@ ######################################################################### -ifneq ($(OBJTREE),$(SRCTREE)) ifeq ($(CURDIR),$(SRCTREE)) dir := else dir := $(subst $(SRCTREE)/,,$(CURDIR)) endif +ifneq ($(OBJTREE),$(SRCTREE)) +# Create object files for SPL in a separate directory +ifeq ($(CONFIG_SPL_BUILD),y) +obj := $(if $(dir),$(SPLTREE)/$(dir)/,$(SPLTREE)/) +else obj := $(if $(dir),$(OBJTREE)/$(dir)/,$(OBJTREE)/) +endif src := $(if $(dir),$(SRCTREE)/$(dir)/,$(SRCTREE)/) $(shell mkdir -p $(obj)) else +# Create object files for SPL in a separate directory +ifeq ($(CONFIG_SPL_BUILD),y) +obj := $(if $(dir),$(SPLTREE)/$(dir)/,$(SPLTREE)/) + +$(shell mkdir -p $(obj)) +else obj := +endif src := endif @@ -160,10 +172,25 @@ gccincdir := $(shell $(CC) -print-file-name=include) CPPFLAGS := $(DBGFLAGS) $(OPTFLAGS) $(RELFLAGS) \ -D__KERNEL__ + +# Enable garbage collection of un-used sections for SPL +ifeq ($(CONFIG_SPL_BUILD),y) +CPPFLAGS += -ffunction-sections -fdata-sections +LDFLAGS_FINAL += --gc-sections +endif + ifneq ($(CONFIG_SYS_TEXT_BASE),) CPPFLAGS += -DCONFIG_SYS_TEXT_BASE=$(CONFIG_SYS_TEXT_BASE) endif +ifneq ($(CONFIG_SPL_TEXT_BASE),) +CPPFLAGS += -DCONFIG_SPL_TEXT_BASE=$(CONFIG_SPL_TEXT_BASE) +endif + +ifeq ($(CONFIG_SPL_BUILD),y) +CPPFLAGS += -DCONFIG_SPL_BUILD +endif + ifneq ($(RESET_VECTOR_ADDRESS),) CPPFLAGS += -DRESET_VECTOR_ADDRESS=$(RESET_VECTOR_ADDRESS) endif @@ -206,6 +233,11 @@ ifneq ($(CONFIG_SYS_TEXT_BASE),) LDFLAGS_u-boot += -Ttext $(CONFIG_SYS_TEXT_BASE) endif +LDFLAGS_u-boot-spl += -T $(obj)u-boot-spl.lds $(LDFLAGS_FINAL) +ifneq ($(CONFIG_SPL_TEXT_BASE),) +LDFLAGS_u-boot-spl += -Ttext $(CONFIG_SPL_TEXT_BASE) +endif + # Location of a usable BFD library, where we define "usable" as # "built for ${HOST}, supports ${TARGET}". Sensible values are # - When cross-compiling: the root of the cross-environment -- 1.7.6