2 # (C) Copyright 2000-2013
3 # Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 # SPDX-License-Identifier: GPL-2.0+
7 #########################################################################
9 ifeq ($(CURDIR),$(SRCTREE))
12 dir := $(subst $(SRCTREE)/,,$(CURDIR))
15 ifneq ($(OBJTREE),$(SRCTREE))
16 # Create object files for SPL in a separate directory
17 ifeq ($(CONFIG_SPL_BUILD),y)
18 ifeq ($(CONFIG_TPL_BUILD),y)
19 obj := $(if $(dir),$(TPLTREE)/$(dir)/,$(TPLTREE)/)
21 obj := $(if $(dir),$(SPLTREE)/$(dir)/,$(SPLTREE)/)
24 obj := $(if $(dir),$(OBJTREE)/$(dir)/,$(OBJTREE)/)
26 src := $(if $(dir),$(SRCTREE)/$(dir)/,$(SRCTREE)/)
28 $(shell mkdir -p $(obj))
30 # Create object files for SPL in a separate directory
31 ifeq ($(CONFIG_SPL_BUILD),y)
32 ifeq ($(CONFIG_TPL_BUILD),y)
33 obj := $(if $(dir),$(TPLTREE)/$(dir)/,$(TPLTREE)/)
35 obj := $(if $(dir),$(SPLTREE)/$(dir)/,$(SPLTREE)/)
38 $(shell mkdir -p $(obj))
50 #########################################################################
52 # Load generated board configuration
53 ifeq ($(CONFIG_TPL_BUILD),y)
54 # Include TPL autoconf
55 sinclude $(OBJTREE)/include/tpl-autoconf.mk
57 ifeq ($(CONFIG_SPL_BUILD),y)
58 # Include SPL autoconf
59 sinclude $(OBJTREE)/include/spl-autoconf.mk
61 # Include normal autoconf
62 sinclude $(OBJTREE)/include/autoconf.mk
65 sinclude $(OBJTREE)/include/config.mk
67 # Some architecture config.mk files need to know what CPUDIR is set to,
68 # so calculate CPUDIR before including ARCH/SOC/CPU config.mk files.
69 # Check if arch/$ARCH/cpu/$CPU exists, otherwise assume arch/$ARCH/cpu contains
71 CPUDIR=arch/$(ARCH)/cpu/$(CPU)
72 ifneq ($(SRCTREE)/$(CPUDIR),$(wildcard $(SRCTREE)/$(CPUDIR)))
73 CPUDIR=arch/$(ARCH)/cpu
76 sinclude $(TOPDIR)/arch/$(ARCH)/config.mk # include architecture dependend rules
77 sinclude $(TOPDIR)/$(CPUDIR)/config.mk # include CPU specific rules
80 sinclude $(TOPDIR)/$(CPUDIR)/$(SOC)/config.mk # include SoC specific rules
83 BOARDDIR = $(VENDOR)/$(BOARD)
88 sinclude $(TOPDIR)/board/$(BOARDDIR)/config.mk # include board specific rules
91 #########################################################################
93 RELFLAGS= $(PLATFORM_RELFLAGS)
95 OBJCFLAGS += --gap-fill=0xff
97 gccincdir := $(shell $(CC) -print-file-name=include)
99 CPPFLAGS = $(KBUILD_CPPFLAGS) $(RELFLAGS)
101 # Enable garbage collection of un-used sections for SPL
102 ifeq ($(CONFIG_SPL_BUILD),y)
103 CPPFLAGS += -ffunction-sections -fdata-sections
104 LDFLAGS_FINAL += --gc-sections
107 ifneq ($(CONFIG_SYS_TEXT_BASE),)
108 CPPFLAGS += -DCONFIG_SYS_TEXT_BASE=$(CONFIG_SYS_TEXT_BASE)
111 ifeq ($(CONFIG_SPL_BUILD),y)
112 CPPFLAGS += -DCONFIG_SPL_BUILD
113 ifeq ($(CONFIG_TPL_BUILD),y)
114 CPPFLAGS += -DCONFIG_TPL_BUILD
118 # Does this architecture support generic board init?
119 ifeq ($(__HAVE_ARCH_GENERIC_BOARD),)
120 ifneq ($(CONFIG_SYS_GENERIC_BOARD),)
121 CHECK_GENERIC_BOARD = $(error Your architecture does not support generic board. \
122 Please undefined CONFIG_SYS_GENERIC_BOARD in your board config file)
126 ifneq ($(OBJTREE),$(SRCTREE))
127 CPPFLAGS += -I$(OBJTREE)/include
130 CPPFLAGS += -I$(TOPDIR)/include -I$(SRCTREE)/arch/$(ARCH)/include
131 CPPFLAGS += -nostdinc \
132 -isystem $(gccincdir) -pipe $(PLATFORM_CPPFLAGS)
134 CFLAGS := $(KBUILD_CFLAGS) $(CPPFLAGS)
136 BCURDIR = $(subst $(SRCTREE)/,,$(CURDIR:$(obj)%=%))
138 ifeq ($(findstring examples/,$(BCURDIR)),)
139 ifeq ($(CONFIG_SPL_BUILD),)
141 CFLAGS += -finstrument-functions -DFTRACE
146 AFLAGS := $(KBUILD_AFLAGS) $(CPPFLAGS)
148 LDFLAGS += $(PLATFORM_LDFLAGS)
149 LDFLAGS_FINAL += -Bstatic
151 LDFLAGS_u-boot += -T $(obj)u-boot.lds $(LDFLAGS_FINAL)
152 ifneq ($(CONFIG_SYS_TEXT_BASE),)
153 LDFLAGS_u-boot += -Ttext $(CONFIG_SYS_TEXT_BASE)
156 LDFLAGS_$(SPL_BIN) += -T $(obj)u-boot-spl.lds $(LDFLAGS_FINAL)
157 ifneq ($(CONFIG_SPL_TEXT_BASE),)
158 LDFLAGS_$(SPL_BIN) += -Ttext $(CONFIG_SPL_TEXT_BASE)
161 #########################################################################
163 export CONFIG_SYS_TEXT_BASE PLATFORM_CPPFLAGS PLATFORM_RELFLAGS CPPFLAGS CFLAGS AFLAGS