Makefile: cosmetic: optimize usage of LIBS-y
[platform/kernel/u-boot.git] / spl / Makefile
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 = $(if $(wildcard $(SRCTREE)/board/$(VENDOR)/common/Makefile), y, n)
27
28 ifdef   CONFIG_SPL_START_S_PATH
29 START_PATH := $(subst ",,$(CONFIG_SPL_START_S_PATH))
30 else
31 START_PATH := $(CPUDIR)
32 endif
33
34 START := $(START_PATH)/start.o
35
36 LIBS-y += arch/$(ARCH)/lib/lib$(ARCH).o
37 LIBS-y += $(CPUDIR)/lib$(CPU).o
38 ifdef SOC
39 LIBS-y += $(CPUDIR)/$(SOC)/lib$(SOC).o
40 endif
41 LIBS-y += board/$(BOARDDIR)/lib$(BOARD).o
42 LIBS-$(HAVE_VENDOR_COMMON_LIB) += board/$(VENDOR)/common/lib$(VENDOR).o
43
44 LIBS-$(CONFIG_SPL_LIBCOMMON_SUPPORT) += common/libcommon.o
45 LIBS-$(CONFIG_SPL_LIBDISK_SUPPORT) += disk/libdisk.o
46 LIBS-$(CONFIG_SPL_I2C_SUPPORT) += drivers/i2c/libi2c.o
47 LIBS-$(CONFIG_SPL_GPIO_SUPPORT) += drivers/gpio/libgpio.o
48 LIBS-$(CONFIG_SPL_MMC_SUPPORT) += drivers/mmc/libmmc.o
49 LIBS-$(CONFIG_SPL_SERIAL_SUPPORT) += drivers/serial/libserial.o
50 LIBS-$(CONFIG_SPL_SPI_FLASH_SUPPORT) += drivers/mtd/spi/libspi_flash.o
51 LIBS-$(CONFIG_SPL_SPI_SUPPORT) += drivers/spi/libspi.o
52 LIBS-$(CONFIG_SPL_FAT_SUPPORT) += fs/fat/libfat.o
53 LIBS-$(CONFIG_SPL_LIBGENERIC_SUPPORT) += lib/libgeneric.o
54 LIBS-$(CONFIG_SPL_POWER_SUPPORT) += drivers/power/libpower.o
55 LIBS-$(CONFIG_SPL_NAND_SUPPORT) += drivers/mtd/nand/libnand.o
56 LIBS-$(CONFIG_SPL_ONENAND_SUPPORT) += drivers/mtd/onenand/libonenand.o
57 LIBS-$(CONFIG_SPL_DMA_SUPPORT) += drivers/dma/libdma.o
58 LIBS-$(CONFIG_SPL_POST_MEM_SUPPORT) += post/drivers/memory.o
59
60 ifneq ($(CONFIG_AM33XX)$(CONFIG_OMAP34XX)$(CONFIG_OMAP44XX)$(CONFIG_OMAP54XX),)
61 LIBS-y += $(CPUDIR)/omap-common/libomap-common.o
62 endif
63
64 START := $(addprefix $(SPLTREE)/,$(START))
65 LIBS := $(addprefix $(SPLTREE)/,$(sort $(LIBS-y)))
66
67 __START := $(subst $(obj),,$(START))
68 __LIBS := $(subst $(obj),,$(LIBS))
69
70 # Linker Script
71 ifdef CONFIG_SPL_LDSCRIPT
72 # need to strip off double quotes
73 LDSCRIPT := $(addprefix $(SRCTREE)/,$(subst ",,$(CONFIG_SPL_LDSCRIPT)))
74 endif
75
76 ifeq ($(wildcard $(LDSCRIPT)),)
77         LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot-spl.lds
78 endif
79 ifeq ($(wildcard $(LDSCRIPT)),)
80         LDSCRIPT := $(TOPDIR)/$(CPUDIR)/u-boot-spl.lds
81 endif
82 ifeq ($(wildcard $(LDSCRIPT)),)
83         LDSCRIPT := $(TOPDIR)/arch/$(ARCH)/cpu/u-boot.lds
84 endif
85 ifeq ($(wildcard $(LDSCRIPT)),)
86 $(error could not find linker script)
87 endif
88
89 # Special flags for CPP when processing the linker script.
90 # Pass the version down so we can handle backwards compatibility
91 # on the fly.
92 LDPPFLAGS += \
93         -include $(TOPDIR)/include/u-boot/u-boot.lds.h \
94         -include $(OBJTREE)/include/config.h \
95         -DCPUDIR=$(CPUDIR) \
96         $(shell $(LD) --version | \
97           sed -ne 's/GNU ld version \([0-9][0-9]*\)\.\([0-9][0-9]*\).*/-DLD_MAJOR=\1 -DLD_MINOR=\2/p')
98
99 ifdef CONFIG_OMAP
100 $(OBJTREE)/MLO: $(obj)u-boot-spl.bin
101         $(OBJTREE)/tools/mkimage -T omapimage \
102                 -a $(CONFIG_SPL_TEXT_BASE) -d $< $@
103 endif
104 ifdef CONFIG_AM33XX
105 $(OBJTREE)/MLO: $(obj)u-boot-spl.bin
106         $(OBJTREE)/tools/mkimage -T omapimage \
107                 -a $(CONFIG_SPL_TEXT_BASE) -d $< $@
108 endif
109
110 ALL-y   += $(obj)u-boot-spl.bin
111
112 ifdef CONFIG_SAMSUNG
113 ALL-y   += $(obj)$(BOARD)-spl.bin
114 endif
115
116 all:    $(ALL-y)
117
118 ifdef CONFIG_SAMSUNG
119 $(obj)$(BOARD)-spl.bin: $(obj)u-boot-spl.bin
120         $(OBJTREE)/tools/mk$(BOARD)spl \
121                 $(obj)u-boot-spl.bin $(obj)$(BOARD)-spl.bin
122 endif
123
124 $(obj)u-boot-spl.bin:   $(obj)u-boot-spl
125         $(OBJCOPY) $(OBJCFLAGS) -O binary $< $@
126
127 GEN_UBOOT = \
128         UNDEF_SYM=`$(OBJDUMP) -x $(LIBS) | \
129         sed  -n -e 's/.*\($(SYM_PREFIX)__u_boot_cmd_.*\)/-u\1/p'|sort|uniq`;\
130         cd $(obj) && $(LD) $(LDFLAGS) $(LDFLAGS_$(@F)) $$UNDEF_SYM $(__START) \
131                 --start-group $(__LIBS) --end-group $(PLATFORM_LIBS) \
132                 -Map u-boot-spl.map -o u-boot-spl
133
134 $(obj)u-boot-spl:       depend $(START) $(LIBS) $(obj)u-boot-spl.lds
135         $(GEN_UBOOT)
136
137 $(START):       depend
138         $(MAKE) -C $(SRCTREE)/$(START_PATH) $@
139
140 $(LIBS):        depend
141         $(MAKE) -C $(SRCTREE)$(dir $(subst $(SPLTREE),,$@))
142
143 $(obj)u-boot-spl.lds: $(LDSCRIPT) depend
144         $(CPP) $(CPPFLAGS) $(LDPPFLAGS) -ansi -D__ASSEMBLY__ -P - < $< > $@
145
146 depend: $(obj).depend
147 .PHONY: depend
148
149 # defines $(obj).depend target
150 include $(SRCTREE)/rules.mk