#
# (C) Copyright 2004-2006, Texas Instruments, <www.ti.com>
# Jian Zhang <jzhang@ti.com>
#
# (C) Copyright 2000-2010
# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
#
# See file CREDITS for list of people who contributed to this
# project.
#
# 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; either version 2 of
# the License, or (at your option) any later version.
#
# 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.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
# MA 02111-1307 USA
#

VERSION = 1
PATCHLEVEL = 46
SUBLEVEL =
EXTRAVERSION =
ifneq "$(SUBLEVEL)" ""
X_LOADER_VERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
else
X_LOADER_VERSION = $(VERSION).$(PATCHLEVEL)$(EXTRAVERSION)
endif
TIMESTAMP_FILE = $(obj)include/timestamp_autogenerated.h
VERSION_FILE = $(obj)include/version_autogenerated.h

HOSTARCH := $(shell uname -m | \
	sed -e s/i.86/i386/ \
	    -e s/sun4u/sparc64/ \
	    -e s/arm.*/arm/ \
	    -e s/sa110/arm/ \
	    -e s/ppc64/powerpc/ \
	    -e s/ppc/powerpc/ \
	    -e s/macppc/powerpc/\
	    -e s/sh.*/sh/)

HOSTOS := $(shell uname -s | tr '[:upper:]' '[:lower:]' | \
	    sed -e 's/\(cygwin\).*/cygwin/')

# Set shell to bash if possible, otherwise fall back to sh
SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
	else if [ -x /bin/bash ]; then echo /bin/bash; \
	else echo sh; fi; fi)

export	HOSTARCH HOSTOS SHELL

# Deal with colliding definitions from tcsh etc.
VENDOR=

#########################################################################
# Allow for silent builds
ifeq (,$(findstring s,$(MAKEFLAGS)))
XECHO = echo
else
XECHO = :
endif

#########################################################################
#
# X-loader build supports producing a object files to the separate external
# directory. Two use cases are supported:
#
# 1) Add O= to the make command line
# 'make O=/tmp/build all'
#
# 2) Set environement variable BUILD_DIR to point to the desired location
# 'export BUILD_DIR=/tmp/build'
# 'make'
#
# The second approach can also be used with a MAKEALL script
# 'export BUILD_DIR=/tmp/build'
# './MAKEALL'
#
# Command line 'O=' setting overrides BUILD_DIR environent variable.
#
# When none of the above methods is used the local build is performed and
# the object files are placed in the source directory.
#

ifdef O
ifeq ("$(origin O)", "command line")
BUILD_DIR := $(O)
endif
endif

ifneq ($(BUILD_DIR),)
saved-output := $(BUILD_DIR)

# Attempt to create a output directory.
$(shell [ -d ${BUILD_DIR} ] || mkdir -p ${BUILD_DIR})

# Verify if it was successful.
BUILD_DIR := $(shell cd $(BUILD_DIR) && /bin/pwd)
$(if $(BUILD_DIR),,$(error output directory "$(saved-output)" does not exist))
endif # ifneq ($(BUILD_DIR),)

OBJTREE		:= $(if $(BUILD_DIR),$(BUILD_DIR),$(CURDIR))
SRCTREE		:= $(CURDIR)
TOPDIR		:= $(SRCTREE)
LNDIR		:= $(OBJTREE)
export	TOPDIR SRCTREE OBJTREE

MKCONFIG	:= $(SRCTREE)/mkconfig
export MKCONFIG

ifneq ($(OBJTREE),$(SRCTREE))
REMOTE_BUILD	:= 1
export REMOTE_BUILD
endif

# $(obj) and (src) are defined in config.mk but here in main Makefile
# we also need them before config.mk is included which is the case for
# some targets like unconfig, clean, clobber, distclean, etc.
ifneq ($(OBJTREE),$(SRCTREE))
obj := $(OBJTREE)/
src := $(SRCTREE)/
else
obj :=
src :=
endif
export obj src

#########################################################################

# The "tools" are needed early, so put this first
# Don't include stuff already done in $(LIBS)
SUBDIRS = tools
.PHONY : $(SUBDIRS)

ifeq ($(obj)include/config.mk,$(wildcard $(obj)include/config.mk))

# Include autoconf.mk before config.mk so that the config options are available
# to all top level build files.  We need the dummy all: target to prevent the
# dependency target in autoconf.mk.dep from being the default.
all:
sinclude $(obj)include/autoconf.mk.dep
sinclude $(obj)include/autoconf.mk

# load ARCH, BOARD, and CPU configuration
include $(obj)include/config.mk
export	ARCH CPU BOARD VENDOR SOC

# set default to nothing for native builds
ifeq ($(HOSTARCH),$(ARCH))
CROSS_COMPILE ?=
endif

# load other configuration
include $(TOPDIR)/config.mk

#########################################################################
# X-Load objects....order is important (i.e. start must be first)

OBJS  = $(CPUDIR)/start.o

OBJS := $(addprefix $(obj),$(OBJS))

LIBS += $(shell if [ -f board/$(VENDOR)/common/Makefile ]; then echo \
	"board/$(VENDOR)/common/lib$(VENDOR).a"; fi)
LIBS += $(CPUDIR)/lib$(CPU).a
LIBS += lib/lib$(ARCH).a
LIBS += common/libcommon.a
LIBS += fs/fat/libfat.a
LIBS += disk/libdisk.a
LIBS += drivers/mtd/nand/libnand.a
LIBS += drivers/mtd/onenand/libonenand.a
LIBS += drivers/rtc/librtc.a
LIBS += drivers/serial/libserial.a
LIBS += drivers/usb/libusb.a

LIBS := $(addprefix $(obj),$(LIBS))
.PHONY : $(LIBS) $(TIMESTAMP_FILE) $(VERSION_FILE)

LIBBOARD = board/$(BOARDDIR)/lib$(BOARD).a
LIBBOARD := $(addprefix $(obj),$(LIBBOARD))

# Add GCC lib
PLATFORM_LIBGCC = -L $(shell dirname `$(CC) $(CFLAGS) -print-libgcc-file-name`) -lgcc
PLATFORM_LIBS += $(PLATFORM_LIBGCC)
export PLATFORM_LIBS

__OBJS := $(subst $(obj),,$(OBJS))
__LIBS := $(subst $(obj),,$(LIBS)) $(subst $(obj),,$(LIBBOARD))

#########################################################################
#########################################################################

# Always append ALL so that arch config.mk's can add custom ones
ALL += $(obj)x-load.srec $(obj)x-load.bin $(obj)x-load.bin.ift $(obj)System.map

all:		$(ALL)

$(obj)x-load.hex:	$(obj)x-load
		$(OBJCOPY) ${OBJCFLAGS} -O ihex $< $@

$(obj)x-load.srec:	$(obj)x-load
		$(OBJCOPY) -O srec $< $@

$(obj)x-load.bin:	$(obj)x-load
		$(OBJCOPY) ${OBJCFLAGS} -O binary $< $@

$(obj)x-load.bin.ift:	$(obj)x-load.bin
		$(obj)tools/signGP $<

$(obj)x-load.dis:	$(obj)x-load
		$(OBJDUMP) -d $< > $@

GEN_XLOAD = \
		UNDEF_SYM=`$(OBJDUMP) -x $(LIBBOARD) $(LIBS) | \
		sed  -n -e 's/.*\($(SYM_PREFIX)__u_boot_cmd_.*\)/-u\1/p'|sort|uniq`;\
		cd $(LNDIR) && $(LD) $(LDFLAGS) $$UNDEF_SYM $(__OBJS) \
			--start-group $(__LIBS) --end-group $(PLATFORM_LIBS) \
			-Map x-load.map -o x-load	
$(obj)x-load:	depend $(SUBDIRS) $(OBJS) $(LIBBOARD) $(LIBS) $(LDSCRIPT) $(obj)x-load.lds
		$(GEN_XLOAD)

$(OBJS):	depend
		$(MAKE) -C $(CPUDIR) $(if $(REMOTE_BUILD),$@,$(notdir $@))

$(LIBS):	depend $(SUBDIRS)
		$(MAKE) -C $(dir $(subst $(obj),,$@))

$(LIBBOARD):	depend $(LIBS)
		$(MAKE) -C $(dir $(subst $(obj),,$@))

$(SUBDIRS):	depend
		$(MAKE) -C $@ all

$(LDSCRIPT):	depend
		$(MAKE) -C $(dir $@) $(notdir $@)

$(obj)x-load.lds: $(LDSCRIPT)
		$(CPP) $(CPPFLAGS) $(LDPPFLAGS) -ansi -D__ASSEMBLY__ -P - <$^ >$@

$(obj)oneboot:	$(obj)x-load.bin
		scripts/mkoneboot.sh
$(VERSION_FILE):
		@( printf '#define X_LOADER_VERSION "Texas Instruments X-Loader %s%s"\n' "$(X_LOADER_VERSION)" \
		 '$(shell $(TOPDIR)/tools/setlocalversion $(TOPDIR))' ) > $@.tmp
		@cmp -s $@ $@.tmp && rm -f $@.tmp || mv -f $@.tmp $@

$(TIMESTAMP_FILE):
		@LC_ALL=C date +'#define X_LOADER_DATE "%b %d %C%y"' > $@
		@LC_ALL=C date +'#define X_LOADER_TIME "%T"' >> $@

# Explicitly make _depend in subdirs containing multiple targets to prevent
# parallel sub-makes creating .depend files simultaneously.
depend dep:	$(TIMESTAMP_FILE) $(VERSION_FILE)
		for dir in $(SUBDIRS) $(CPUDIR) $(dir $(LDSCRIPT)) ; do \
			$(MAKE) -C $$dir _depend ; done

TAG_SUBDIRS = $(SUBDIRS)
TAG_SUBDIRS += $(dir $(__LIBS))
TAG_SUBDIRS += include

tags ctags:
		ctags -w -o $(obj)ctags `find $(TAG_SUBDIRS) \
						-name '*.[chS]' -print`

etags:
		etags -a -o $(obj)etags `find $(TAG_SUBDIRS) \
						-name '*.[chS]' -print`
cscope:
		find $(TAG_SUBDIRS) -name '*.[chS]' -print > cscope.files
		cscope -b -q -k

SYSTEM_MAP = \
		$(NM) $1 | \
		grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | \
		LC_ALL=C sort
$(obj)System.map:	$(obj)x-load
		@$(call SYSTEM_MAP,$<) > $(obj)System.map


#########################################################################
else	# !config.mk
all $(obj)x-load.hex $(obj)x-load.srec $(obj)x-load.bin \
$(obj)x-load.dis $(obj)x-load \
$(obj)oneboot \
$(filter-out tools,$(SUBDIRS)) $(TIMESTAMP_FILE) $(VERSION_FILE) \
depend dep tags ctags etags cscope $(obj)System.map:
	@echo "System not configured - see README" >&2
	@ exit 1

tools:
	$(MAKE) -C tools
tools-all:
	$(MAKE) -C tools HOST_TOOLS_ALL=y
endif	# config.mk

#########################################################################

unconfig:
	@rm -f $(obj)include/config.h $(obj)include/config.mk

%_config::	unconfig
	@$(MKCONFIG) -A $(@:_config=)

#
# Functions to generate common board directory names
#
lcname	= $(shell echo $(1) | sed -e 's/\(.*\)_config/\L\1/')
ucname	= $(shell echo $(1) | sed -e 's/\(.*\)_config/\U\1/')

#========================================================================
# ARM
#========================================================================
#########################################################################
## OMAP1 (ARM92xT) Systems
#########################################################################

omap1710h3_config :    unconfig
	@$(MKCONFIG) $(@:_config=) arm arm926ejs omap1710h3

#########################################################################
## OMAP2 (ARM1136) Systems
#########################################################################

omap2420h4_config :    unconfig
	@$(MKCONFIG) $(@:_config=) arm arm1136 omap2420h4

omap2430sdp_config :    unconfig
	@$(MKCONFIG) $(@:_config=) arm arm1136 omap2430sdp

#########################################################################
## OMAP3 (ARM-CortexA8) Systems
#########################################################################
omap3430sdp_config :    unconfig
	@$(MKCONFIG) $(@:_config=) arm omap3 omap3430sdp

omap3430labrador_config :    unconfig
	@$(MKCONFIG) $(@:_config=) arm omap3 omap3430labrador

omap3evm_config :	unconfig
	@$(MKCONFIG) $(@:_config=) arm omap3 omap3evm

am3517evm_config :       unconfig
	@$(MKCONFIG) $(@:_config=) arm omap3 am3517evm

#########################################################################
#########################################################################
clean:
	@rm -f $(obj)tools/signGP
	@rm -f $(TIMESTAMP_FILE) $(VERSION_FILE)
	@find $(OBJTREE) -type f \
		\( -name 'core' -o -name '*.bak' -o -name '*~' \
		-o -name '*.o'	-o -name '*.a' -o -name '*.exe'	\) -print \
		| xargs rm -f

clobber:	clean
	@find $(OBJTREE) -type f \( -name .depend \
		-o -name '*.srec' -o -name '*.bin' -o -name '*.bin.ift' \) \
		-print0 \
		| xargs -0 rm -f
	@rm -f $(OBJS) $(obj)*.bak $(obj)ctags $(obj)etags $(obj)TAGS \
		$(obj)cscope.* $(obj)*.*~
	@rm -f $(obj)x-load $(obj)x-load.map $(obj)x-load.hex $(ALL)
	@rm -f $(obj)include/asm/proc $(obj)include/asm/arch $(obj)include/asm

ifeq ($(OBJTREE),$(SRCTREE))
mrproper \
distclean:	clobber unconfig
else
mrproper \
distclean:	clobber unconfig
	rm -rf $(obj)*
endif

backup:
	F=`basename $(TOPDIR)` ; cd .. ; \
	gtar --force-local -zcvf `LC_ALL=C date "+$$F-%Y-%m-%d-%T.tar.gz"` $$F

#########################################################################