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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# SPDX-License-Identifier: GPL-2.0+
13#
14# Based on top-level Makefile.
15#
16
17src := $(obj)
18
19# Create output directory if not already present
20_dummy := $(shell [ -d $(obj) ] || mkdir -p $(obj))
21
22include $(srctree)/scripts/Kbuild.include
23
24CONFIG_SPL_BUILD := y
25export CONFIG_SPL_BUILD
26
27KBUILD_CPPFLAGS += -DCONFIG_SPL_BUILD
28ifeq ($(CONFIG_TPL_BUILD),y)
29KBUILD_CPPFLAGS += -DCONFIG_TPL_BUILD
30endif
31
32# Enable garbage collection of un-used sections for SPL
33KBUILD_CFLAGS += -ffunction-sections -fdata-sections
34LDFLAGS_FINAL += --gc-sections
35
36ifeq ($(CONFIG_TPL_BUILD),y)
37export CONFIG_TPL_BUILD
38SPL_BIN := u-boot-tpl
39else
40SPL_BIN := u-boot-spl
41endif
42
43include include/config.mk
44
45ifeq ($(CONFIG_TPL_BUILD),y)
46 -include include/tpl-autoconf.mk
47else
48 -include include/spl-autoconf.mk
49endif
50
51include $(TOPDIR)/config.mk
52
53# FIX ME
54c_flags := $(KBUILD_CFLAGS) $(KBUILD_CPPFLAGS) $(CPPFLAGS) $(UBOOTINCLUDE) $(NOSTDINC_FLAGS)
55
56# Auto-generate the spl-autoconf.mk file (which is included by all makefiles for SPL)
57quiet_cmd_autoconf = GEN $@
58 cmd_autoconf = \
59 $(CPP) $(c_flags) -DDO_DEPS_ONLY -dM $(srctree)/include/common.h > $@.tmp && \
60 sed -n -f $(srctree)/tools/scripts/define2mk.sed $@.tmp > $@; \
61 rm $@.tmp
62
63include/tpl-autoconf.mk: include/config.h
64 $(call cmd,autoconf)
65
66include/spl-autoconf.mk: include/config.h
67 $(call cmd,autoconf)
68
69HAVE_VENDOR_COMMON_LIB = $(if $(wildcard $(SRCTREE)/board/$(VENDOR)/common/Makefile),y,n)
70
71ifdef CONFIG_SPL_START_S_PATH
72START_PATH := $(CONFIG_SPL_START_S_PATH:"%"=%)
73else
74START_PATH := $(CPUDIR)
75endif
76
77head-y := $(START_PATH)/start.o
78head-$(CONFIG_X86) += $(START_PATH)/start16.o $(START_PATH)/resetvec.o
79head-$(CONFIG_4xx) += $(START_PATH)/resetvec.o
80head-$(CONFIG_MPC85xx) += $(START_PATH)/resetvec.o
81
82LIBS-y += arch/$(ARCH)/lib/
83
84LIBS-y += $(CPUDIR)/
85
86ifdef SOC
87LIBS-y += $(CPUDIR)/$(SOC)/
88endif
89LIBS-y += board/$(BOARDDIR)/
90LIBS-$(HAVE_VENDOR_COMMON_LIB) += board/$(VENDOR)/common/
91
92LIBS-$(CONFIG_SPL_FRAMEWORK) += common/spl/
93LIBS-$(CONFIG_SPL_LIBCOMMON_SUPPORT) += common/
94LIBS-$(CONFIG_SPL_LIBDISK_SUPPORT) += disk/
95LIBS-$(CONFIG_SPL_I2C_SUPPORT) += drivers/i2c/
96LIBS-$(CONFIG_SPL_GPIO_SUPPORT) += drivers/gpio/
97LIBS-$(CONFIG_SPL_MMC_SUPPORT) += drivers/mmc/
98LIBS-$(CONFIG_SPL_MPC8XXX_INIT_DDR_SUPPORT) += drivers/ddr/fsl/
99LIBS-$(CONFIG_SPL_SERIAL_SUPPORT) += drivers/serial/
100LIBS-$(CONFIG_SPL_SPI_FLASH_SUPPORT) += drivers/mtd/spi/
101LIBS-$(CONFIG_SPL_SPI_SUPPORT) += drivers/spi/
102LIBS-y += fs/
103LIBS-$(CONFIG_SPL_LIBGENERIC_SUPPORT) += lib/
104LIBS-$(CONFIG_SPL_POWER_SUPPORT) += drivers/power/ \
105 drivers/power/pmic/
106LIBS-$(if $(CONFIG_CMD_NAND),$(CONFIG_SPL_NAND_SUPPORT)) += drivers/mtd/nand/
107LIBS-$(CONFIG_SPL_DRIVERS_MISC_SUPPORT) += drivers/misc/
108LIBS-$(CONFIG_SPL_ONENAND_SUPPORT) += drivers/mtd/onenand/
109LIBS-$(CONFIG_SPL_DMA_SUPPORT) += drivers/dma/
110LIBS-$(CONFIG_SPL_POST_MEM_SUPPORT) += post/drivers/
111LIBS-$(CONFIG_SPL_NET_SUPPORT) += net/
112LIBS-$(CONFIG_SPL_ETH_SUPPORT) += drivers/net/
113LIBS-$(CONFIG_SPL_ETH_SUPPORT) += drivers/net/phy/
114LIBS-$(CONFIG_SPL_USBETH_SUPPORT) += drivers/net/phy/
115LIBS-$(CONFIG_SPL_MUSB_NEW_SUPPORT) += drivers/usb/musb-new/
116LIBS-$(CONFIG_SPL_USBETH_SUPPORT) += drivers/usb/gadget/
117LIBS-$(CONFIG_SPL_WATCHDOG_SUPPORT) += drivers/watchdog/
118LIBS-$(CONFIG_SPL_USB_HOST_SUPPORT) += drivers/usb/host/
119LIBS-$(CONFIG_OMAP_USB_PHY) += drivers/usb/phy/
120LIBS-$(CONFIG_SPL_SATA_SUPPORT) += drivers/block/
121
122ifneq (,$(CONFIG_MX23)$(CONFIG_MX35)$(filter $(SOC), mx25 mx27 mx5 mx6 mx31 mx35))
123LIBS-y += arch/$(ARCH)/imx-common/
124endif
125
126LIBS-$(CONFIG_ARM) += arch/arm/cpu/
127LIBS-$(CONFIG_PPC) += arch/powerpc/cpu/
128
129LIBS-y := $(patsubst %/, %/built-in.o, $(LIBS-y))
130
131# Add GCC lib
132ifeq ("$(USE_PRIVATE_LIBGCC)", "yes")
133PLATFORM_LIBS := $(SPLTREE)/arch/$(ARCH)/lib/lib.a
134endif
135
136LIBS-y := $(sort $(LIBS-y))
137
138__START := $(head-y)
139__LIBS := $(LIBS-y)
140
141START := $(addprefix $(obj)/,$(head-y))
142LIBS := $(addprefix $(obj)/,$(LIBS-y))
143
144# Linker Script
145ifdef CONFIG_SPL_LDSCRIPT
146# need to strip off double quotes
147LDSCRIPT := $(addprefix $(SRCTREE)/,$(CONFIG_SPL_LDSCRIPT:"%"=%))
148endif
149
150ifeq ($(wildcard $(LDSCRIPT)),)
151 LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot-spl.lds
152endif
153ifeq ($(wildcard $(LDSCRIPT)),)
154 LDSCRIPT := $(TOPDIR)/$(CPUDIR)/u-boot-spl.lds
155endif
156ifeq ($(wildcard $(LDSCRIPT)),)
157 LDSCRIPT := $(TOPDIR)/arch/$(ARCH)/cpu/u-boot-spl.lds
158endif
159ifeq ($(wildcard $(LDSCRIPT)),)
160$(error could not find linker script)
161endif
162
163# Special flags for CPP when processing the linker script.
164# Pass the version down so we can handle backwards compatibility
165# on the fly.
166LDPPFLAGS += \
167 -include $(TOPDIR)/include/u-boot/u-boot.lds.h \
168 -include $(OBJTREE)/include/config.h \
169 -DCPUDIR=$(CPUDIR) \
170 $(shell $(LD) --version | \
171 sed -ne 's/GNU ld version \([0-9][0-9]*\)\.\([0-9][0-9]*\).*/-DLD_MAJOR=\1 -DLD_MINOR=\2/p')
172
173$(OBJTREE)/MLO: $(obj)/u-boot-spl.bin
174 $(OBJTREE)/tools/mkimage -T omapimage \
175 -a $(CONFIG_SPL_TEXT_BASE) -d $< $@
176
177$(OBJTREE)/MLO.byteswap: $(obj)/u-boot-spl.bin
178 $(OBJTREE)/tools/mkimage -T omapimage -n byteswap \
179 -a $(CONFIG_SPL_TEXT_BASE) -d $< $@
180
181$(objtree)/SPL : $(obj)/u-boot-spl.bin
182 $(MAKE) $(build)=spl/arch/arm/imx-common $@
183
184ALL-y += $(obj)/$(SPL_BIN).bin
185
186ifdef CONFIG_SAMSUNG
187ALL-y += $(obj)/$(BOARD)-spl.bin
188endif
189
190all: $(ALL-y)
191
192ifdef CONFIG_SAMSUNG
193ifdef CONFIG_VAR_SIZE_SPL
194VAR_SIZE_PARAM = --vs
195else
196VAR_SIZE_PARAM =
197endif
198$(obj)/$(BOARD)-spl.bin: $(obj)/u-boot-spl.bin
199 $(if $(wildcard $(OBJTREE)/spl/board/samsung/$(BOARD)/tools/mk$(BOARD)spl),\
200 $(OBJTREE)/spl/board/samsung/$(BOARD)/tools/mk$(BOARD)spl,\
201 $(OBJTREE)/tools/mkexynosspl) $(VAR_SIZE_PARAM) $< $@
202endif
203
204$(obj)/$(SPL_BIN).bin: $(obj)/$(SPL_BIN)
205 $(OBJCOPY) $(OBJCFLAGS) $(SPL_OBJCFLAGS) -O binary $< $@
206
207LDFLAGS_$(SPL_BIN) += -T u-boot-spl.lds $(LDFLAGS_FINAL)
208ifneq ($(CONFIG_SPL_TEXT_BASE),)
209LDFLAGS_$(SPL_BIN) += -Ttext $(CONFIG_SPL_TEXT_BASE)
210endif
211
212GEN_UBOOT = \
213 cd $(obj) && $(LD) $(LDFLAGS) $(LDFLAGS_$(@F)) $(__START) \
214 --start-group $(__LIBS) --end-group $(PLATFORM_LIBS) \
215 -Map $(SPL_BIN).map -o $(SPL_BIN)
216
217$(obj)/$(SPL_BIN): $(START) $(LIBS) $(obj)/u-boot-spl.lds
218 $(GEN_UBOOT)
219
220$(START):
221 @:
222
223$(LIBS):
224 $(Q)$(MAKE) $(build)=$(patsubst %/,%,$(dir $@))
225
226# FIX ME
227cpp_flags := $(KBUILD_CPPFLAGS) $(CPPFLAGS) $(UBOOTINCLUDE) $(NOSTDINC_FLAGS)
228
229$(obj)/u-boot-spl.lds: $(LDSCRIPT) FORCE
230 $(CPP) $(cpp_flags) $(LDPPFLAGS) -I$(obj). -ansi -D__ASSEMBLY__ -P - < $< > $@
231
232PHONY += FORCE
233FORCE:
234
235# Declare the contents of the .PHONY variable as phony. We keep that
236# information in a variable so we can use it in if_changed and friends.
237.PHONY: $(PHONY)