| Daniel Schwierzeck | 39ca08e | 2011-07-18 07:48:07 +0000 | [diff] [blame^] | 1 | # |
| 2 | # (C) Copyright 2000-2011 |
| 3 | # Wolfgang Denk, DENX Software Engineering, wd@denx.de. |
| 4 | # |
| 5 | # (C) Copyright 2011 |
| 6 | # Daniel Schwierzeck, daniel.schwierzeck@googlemail.com. |
| 7 | # |
| 8 | # (C) Copyright 2011 |
| 9 | # Texas Instruments Incorporated - http://www.ti.com/ |
| 10 | # Aneesh V <aneesh@ti.com> |
| 11 | # |
| 12 | # This file is released under the terms of GPL v2 and any later version. |
| 13 | # See the file COPYING in the root directory of the source tree for details. |
| 14 | # |
| 15 | # Based on top-level Makefile. |
| 16 | # |
| 17 | |
| 18 | CONFIG_SPL_BUILD := y |
| 19 | export CONFIG_SPL_BUILD |
| 20 | |
| 21 | include $(TOPDIR)/config.mk |
| 22 | |
| 23 | # We want the final binaries in this directory |
| 24 | obj := $(OBJTREE)/spl/ |
| 25 | |
| 26 | HAVE_VENDOR_COMMON_LIB := $(shell [ -f $(SRCTREE)/board/$(VENDOR)/common/Makefile ] \ |
| 27 | && echo y || echo n) |
| 28 | |
| 29 | START := $(CPUDIR)/start.o |
| 30 | |
| 31 | LIBS-y += arch/$(ARCH)/lib/lib$(ARCH).o |
| 32 | LIBS-y += $(CPUDIR)/lib$(CPU).o |
| 33 | ifdef SOC |
| 34 | LIBS-y += $(CPUDIR)/$(SOC)/lib$(SOC).o |
| 35 | endif |
| 36 | LIBS-y += board/$(BOARDDIR)/lib$(BOARD).o |
| 37 | LIBS-$(HAVE_VENDOR_COMMON_LIB) += board/$(VENDOR)/common/lib$(VENDOR).o |
| 38 | |
| 39 | START := $(addprefix $(SPLTREE)/,$(START)) |
| 40 | LIBS := $(addprefix $(SPLTREE)/,$(sort $(LIBS-y))) |
| 41 | |
| 42 | __START := $(subst $(obj),,$(START)) |
| 43 | __LIBS := $(subst $(obj),,$(LIBS)) |
| 44 | |
| 45 | # Linker Script |
| 46 | ifdef CONFIG_SPL_LDSCRIPT |
| 47 | # need to strip off double quotes |
| 48 | LDSCRIPT := $(addprefix $(SRCTREE)/,$(subst ",,$(CONFIG_SPL_LDSCRIPT))) |
| 49 | endif |
| 50 | |
| 51 | ifeq ($(wildcard $(LDSCRIPT)),) |
| 52 | LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot-spl.lds |
| 53 | endif |
| 54 | ifeq ($(wildcard $(LDSCRIPT)),) |
| 55 | LDSCRIPT := $(TOPDIR)/$(CPUDIR)/u-boot-spl.lds |
| 56 | endif |
| 57 | ifeq ($(wildcard $(LDSCRIPT)),) |
| 58 | $(error could not find linker script) |
| 59 | endif |
| 60 | |
| 61 | # Special flags for CPP when processing the linker script. |
| 62 | # Pass the version down so we can handle backwards compatibility |
| 63 | # on the fly. |
| 64 | LDPPFLAGS += \ |
| 65 | -include $(TOPDIR)/include/u-boot/u-boot.lds.h \ |
| 66 | -include $(OBJTREE)/include/config.h \ |
| 67 | $(shell $(LD) --version | \ |
| 68 | sed -ne 's/GNU ld version \([0-9][0-9]*\)\.\([0-9][0-9]*\).*/-DLD_MAJOR=\1 -DLD_MINOR=\2/p') |
| 69 | |
| 70 | ALL-y += $(obj)u-boot-spl.bin |
| 71 | |
| 72 | all: $(ALL-y) |
| 73 | |
| 74 | $(obj)u-boot-spl.bin: $(obj)u-boot-spl |
| 75 | $(OBJCOPY) $(OBJCFLAGS) -O binary $< $@ |
| 76 | |
| 77 | GEN_UBOOT = \ |
| 78 | UNDEF_SYM=`$(OBJDUMP) -x $(LIBS) | \ |
| 79 | sed -n -e 's/.*\($(SYM_PREFIX)__u_boot_cmd_.*\)/-u\1/p'|sort|uniq`;\ |
| 80 | cd $(obj) && $(LD) $(LDFLAGS) $(LDFLAGS_$(@F)) $$UNDEF_SYM $(__START) \ |
| 81 | --start-group $(__LIBS) --end-group $(PLATFORM_LIBS) \ |
| 82 | -Map u-boot-spl.map -o u-boot-spl |
| 83 | |
| 84 | $(obj)u-boot-spl: depend $(START) $(LIBS) $(obj)u-boot-spl.lds |
| 85 | $(GEN_UBOOT) |
| 86 | |
| 87 | $(START): depend |
| 88 | $(MAKE) -C $(SRCTREE)/$(CPUDIR) $@ |
| 89 | |
| 90 | $(LIBS): depend |
| 91 | $(MAKE) -C $(SRCTREE)$(dir $(subst $(SPLTREE),,$@)) |
| 92 | |
| 93 | $(obj)u-boot-spl.lds: $(LDSCRIPT) depend |
| 94 | $(CPP) $(CPPFLAGS) $(LDPPFLAGS) -ansi -D__ASSEMBLY__ -P - < $< > $@ |
| 95 | |
| 96 | depend: $(obj).depend |
| 97 | .PHONY: depend |
| 98 | |
| 99 | # defines $(obj).depend target |
| 100 | include $(SRCTREE)/rules.mk |