From: Daniel Schwierzeck daniel.schwierzeck@googlemail.com
[aneesh@ti.com: 1. Changed definition of OBJTREE for SPL 2. Added support for linker script from various places 4. $(OBJTREE)/spl/obj for objects 5. Minor cleanup ] Signed-off-by: Aneesh V aneesh@ti.com Signed-off-by: Daniel Schwierzeck daniel.schwierzeck@googlemail.com --- spl/Makefile | 105 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 105 insertions(+), 0 deletions(-) create mode 100644 spl/Makefile
diff --git a/spl/Makefile b/spl/Makefile new file mode 100644 index 0000000..46edf2b --- /dev/null +++ b/spl/Makefile @@ -0,0 +1,105 @@ +# +# (C) Copyright 2011 Daniel Schwierzeck, daniel.schwierzeck@googlemail.com. +# +# (C) Copyright 2011 +# Texas Instruments Incorporated - http://www.ti.com/ +# Aneesh V aneesh@ti.com +# +# This file is released under the terms of GPL v2 and any later version. +# See the file COPYING in the root directory of the source tree for details. +# + +CONFIG_UBOOT_SPL_BUILD = y +export CONFIG_UBOOT_SPL_BUILD + +# create 'spl/obj' within OBJTREE for spl +OBJTREE := $(OBJTREE)/spl/obj +LNDIR := $(OBJTREE) + +include $(TOPDIR)/config.mk +# We want the final binaries in this directory +obj := $(obj)../ +START = $(OBJTREE)/$(CPUDIR)/start.o + +LIBS-y += $(shell if [ -f $(SRCTREE)/board/$(VENDOR)/common/Makefile ]; \ + then echo "board/$(VENDOR)/common/lib$(VENDOR).o"; fi) +LIBS-y += board/$(BOARDDIR)/lib$(BOARD).o +LIBS-y += $(CPUDIR)/lib$(CPU).o +ifdef SOC +LIBS-y += $(CPUDIR)/$(SOC)/lib$(SOC).o +endif +LIBS-y += arch/$(ARCH)/lib/lib$(ARCH).o +LIBS-$(CONFIG_SPL_SPI_SUPPORT) += drivers/spi/libspi.o +LIBS-$(CONFIG_SPL_SPI_FLASH_SUPPORT) += drivers/mtd/spi/libspi_flash.o +LIBS-$(CONFIG_SPL_GPIO_SUPPORT) += drivers/gpio/libgpio.o +LIBS-$(CONFIG_SPL_NAND_BOOT) += spl/nand/libnand_spl.o +LIBS-$(CONFIG_SPL_ONENAND_BOOT) += spl/nand/libonenand_spl.o + +LIBS = $(addprefix $(OBJTREE)/,$(sort $(LIBS-y))) + +__START = $(subst $(OBJTREE)/,,$(START)) +__LIBS = $(subst $(OBJTREE)/,,$(LIBS)) + +# Linker Script +ifdef CONFIG_SYS_SPL_LDSCRIPT +# need to strip off double quotes +LDSCRIPT := $(addprefix $(SRCTREE)/,$(subst ",,$(CONFIG_SYS_SPL_LDSCRIPT))) +endif + +ifeq ($(wildcard $(LDSCRIPT)),) + LDSCRIPT := $(TOPDIR)/$(ARCH)/$(CPU)/$(SOC)/$(BOARDDIR)/u-boot-spl.lds +endif +ifeq ($(wildcard $(LDSCRIPT)),) + LDSCRIPT := $(TOPDIR)/$(ARCH)/$(CPU)/$(SOC)/u-boot-spl.lds +endif +ifeq ($(wildcard $(LDSCRIPT)),) + LDSCRIPT := $(TOPDIR)/$(ARCH)/$(CPU)/u-boot-spl.lds +endif +ifeq ($(wildcard $(LDSCRIPT)),) +$(error could not find linker script) +endif + +# Special flags for CPP when processing the linker script. +# Pass the version down so we can handle backwards compatibility +# on the fly. +LDPPFLAGS += \ + -include $(TOPDIR)/include/u-boot/u-boot.lds.h \ + -include $(TOPDIR)/include/config.h \ + $(shell $(LD) --version | \ + sed -ne 's/GNU ld version ([0-9][0-9]*).([0-9][0-9]*).*/-DLD_MAJOR=\1 -DLD_MINOR=\2/p') + +ALL = $(obj)u-boot-spl.bin + +all: $(ALL) + +$(obj)u-boot-spl.bin: $(obj)u-boot-spl + $(OBJCOPY) $(OBJCFLAGS) -O binary $< $@ + +GEN_UBOOT = \ + UNDEF_SYM=`$(OBJDUMP) -x $(LIBS) | \ + sed -n -e 's/.*($(SYM_PREFIX)__u_boot_cmd_.*)/-u\1/p'|sort|uniq`;\ + cd $(LNDIR) && $(LD) $(LDFLAGS) $(LDFLAGS_$(@F)) $$UNDEF_SYM $(__START) \ + --start-group $(__LIBS) --end-group $(PLATFORM_LIBS) \ + -Map u-boot-spl.map -o u-boot-spl + +$(obj)u-boot-spl: depend $(START) $(LIBS) $(obj)u-boot-spl.lds + $(GEN_UBOOT) + +$(START): depend + $(MAKE) -C $(SRCTREE)/$(CPUDIR) $@ + +$(LIBS): depend + $(MAKE) -C $(SRCTREE)$(dir $(subst $(OBJTREE),,$@)) + +$(obj)u-boot-spl.lds: $(LDSCRIPT) + $(CPP) $(CPPFLAGS) $(LDPPFLAGS) -ansi -D__ASSEMBLY__ -P - < $< > $@ + +depend: $(obj).depend +.PHONY: depend + +clean: + # TODO: implement clean to support in-tree builds + +# defines $(obj).depend target +include $(SRCTREE)/rules.mk +