2 ## This file is part of the coreboot project.
4 ## Copyright (C) 2014 Google Inc
6 ## This program is free software; you can redistribute it and/or modify
7 ## it under the terms of the GNU General Public License as published by
8 ## the Free Software Foundation; version 2 of the License.
10 ## This program is distributed in the hope that it will be useful,
11 ## but WITHOUT ANY WARRANTY; without even the implied warranty of
12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 ## GNU General Public License for more details.
17 ifeq ($(CONFIG_CCACHE),y)
19 CCACHE:=$(word 1,$(wildcard $(addsuffix /ccache,$(subst :, ,$(PATH)))))
21 $(error ccache selected, but not found in PATH)
24 export CCACHE_COMPILERCHECK=content
25 export CCACHE_BASEDIR=$(top)
27 $(foreach arch,$(ARCH_SUPPORTED), \
28 $(eval CC_$(arch):=$(CCACHE) $(CC_$(arch))))
30 HOSTCC:=$(CCACHE) $(HOSTCC)
31 HOSTCXX:=$(CCACHE) $(HOSTCXX)
32 ROMCC=$(CCACHE) $(ROMCC_BIN)
35 # scan-build integration
36 ifneq ($(CCC_ANALYZER_OUTPUT_FORMAT),)
38 ifeq ($(CCC_ANALYZER_ANALYSIS),)
39 export CCC_ANALYZER_ANALYSIS := -analyzer-opt-analyze-headers
42 $(foreach arch,$(ARCH_SUPPORTED), \
43 $(eval CC_$(arch):=CCC_CC="$(CC_$(arch))" $(CC) ))
45 HOSTCC:=CCC_CC="$(HOSTCC)" $(CC)
46 HOSTCXX:=CCC_CXX="$(HOSTCXX)" $(CXX)
47 ROMCC=CCC_CC="$(ROMCC_BIN)" $(CC)
50 COREBOOT_STANDARD_STAGES := bootblock libverstage verstage romstage ramstage
51 MAP-libverstage := verstage
57 ARCHDIR-arm64 := arm64
58 ARCHDIR-riscv := riscv
62 CFLAGS_arm64 += -mgeneral-regs-only
63 CFLAGS_mips += -mips32r2 -G 0 -mno-abicalls -fno-pic
66 CFLAGS_x86_64 += -mcmodel=large -mno-red-zone
68 # Some boards only provide 2K stacks, so storing lots of data there leads to
69 # problems. Since C rules don't allow us to statically determine the maximum
70 # stack use, we use 1.5K as heuristic, assuming that we typically have lots
71 # of tiny stack frames and the odd large one.
73 # Store larger buffers in BSS, use MAYBE_STATIC to share code with __PRE_RAM__
75 # Since GCCs detection of dynamic array bounds unfortunately seems to be
76 # very basic, you'll sometimes have to use a static upper bound for the
77 # size and an assert() to make sure it's honored (see gpio_base3_value()
79 # (If you absolutely need a larger stack frame and are 100% sure it cannot
80 # cause problems, you can whitelist it with #pragma diagnostic.)
81 CFLAGS_arm += -Wstack-usage=1536
82 CFLAGS_arm64 += -Wstack-usage=1536
83 CFLAGS_mips += -Wstack-usage=1536
84 CFLAGS_riscv += -Wstack-usage=1536
87 $(foreach arch,$(ARCH_SUPPORTED),\
88 $(eval CPPFLAGS_$(arch) += \
89 -Isrc/arch/$(ARCHDIR-$(arch))/include))
91 # set_stage_toolchain: Decides the toolchain to be used by every stage
92 # E.g.: If bootblock is x86_32, it sets ARCH-BOOTBLOCK-y = x86_32, whereas
93 # ARCH-BOOTBLOCK-n = armv7. Then, ARCH-BOOTBLOCK-y can be used anywhere to
94 # decide the compiler toolchain for bootblock stage
95 # This step is essential for initializing the toolchain for coreboot standard
96 # stages i.e. bootblock, romstage and ramstage, since it acts as the second
97 # parameter to create_class_compiler below in init_standard_toolchain
98 map_stage = $(strip $(if $(MAP-$(1)),$(MAP-$(1)),$(1)))
99 set_stage_toolchain= \
100 $(foreach arch,$(ARCH_SUPPORTED),$(eval ARCH-$(1)-$($(shell echo CONFIG_ARCH_$(call map_stage,$(1))_$(arch) | tr '[:lower:]' '[:upper:]')) := $(arch)))
102 # create_class_compiler: Used to create compiler tool set for
105 # @2: compiler set to be used
106 # e.g.: smm special class uses i386 as compiler set
107 define create_class_compiler
108 $(if $(2),,$(error building $(1) without the required toolchain))
109 CC_$(1) := $(CC_$(2))
110 LD_$(1) := $(LD_$(2))
111 NM_$(1) := $(NM_$(2))
112 AR_$(1) := $(AR_$(2))
113 OBJCOPY_$(1) := $(OBJCOPY_$(2))
114 OBJDUMP_$(1) := $(OBJDUMP_$(2))
115 STRIP_$(1) := $(STRIP_$(2))
116 READELF_$(1) := $(READELF_$(2))
117 CFLAGS_$(1) = $$(CFLAGS_common) $$(CFLAGS_$(2))
118 CPPFLAGS_$(1) = $$(CPPFLAGS_common) $$(CPPFLAGS_$(2)) -D__ARCH_$(2)__
119 COMPILER_RT_$(1) := $$(COMPILER_RT_$(2))
120 COMPILER_RT_FLAGS_$(1) := $$(COMPILER_RT_FLAGS_$(2))
121 LDFLAGS_$(1) = $$(LDFLAGS_common) $$(LDFLAGS_$(2))
124 # define_class: Allows defining any program as dynamic class and compiler tool
125 # set for the same based on the architecture for which the program is to be
127 # @1: program (class name)
128 # @2: architecture for which the program needs to be compiled
129 # IMP: Ensure that define_class is called before any .c or .S files are added to
130 # the class of the program. Check subdirs-y for order of subdirectory inclusions
133 $(eval $(call create_class_compiler,$(1),$(2)))
136 # initialize standard toolchain (CC,AS and others) for give stage
137 # @1 : stage for which the toolchain is to be initialized
138 init_standard_toolchain = \
139 $(eval $(call set_stage_toolchain,$(1))) \
140 $(eval $(call create_class_compiler,$(1),$(ARCH-$(1)-y)))
143 $(foreach stage,$(COREBOOT_STANDARD_STAGES),$(eval $(call init_standard_toolchain,$(stage))))
145 $(eval $(call toolchain_to_dir))
149 # Test for coreboot toolchain (except when explicitly not requested)
150 ifneq ($(NOCOMPILE),1)
151 # only run if we're doing a build (not for tests, kconfig, ...)
152 # rationale: gcc versions by Linux distributions tend to be quite messed up
153 # llvm/clang also needs patches supplied by the coreboot build
157 ifneq ($(CONFIG_ANY_TOOLCHAIN),y)
158 $(foreach arch,$(sort $(foreach stage,$(COREBOOT_STANDARD_STAGES),$(ARCH-$(stage)-y))), \
159 $(if $(shell if [ -n "$(CC_$(arch))" ]; then $(CC_$(arch)) -v 2>&1 |grep -q "coreboot toolchain" || echo not-coreboot; else echo not-coreboot; fi), \
160 $(eval COMPILERFAIL:=1)$(warning The coreboot toolchain for '$(arch)' architecture was not found.)))
161 #if iasl doesn't match the current coreboot version, fail the test
162 #TODO: Figure out if iasl is even needed for the build.
163 $(if $(shell if [ -n "$(IASL)" ]; then $(IASL) -v 2>&1 | grep -q "$(shell util/crossgcc/buildgcc -s iasl)" || echo not-coreboot; else echo not-coreboot; fi), \
164 $(eval COMPILERFAIL:=1)$(eval IASLFAIL:=1)$(warning The coreboot toolchain version of iasl '$(shell util/crossgcc/buildgcc -s iasl)' was not found))
165 else #$(CONFIG_ANY_TOOLCHAIN)
166 $(foreach arch,$(sort $(foreach stage,$(COREBOOT_STANDARD_STAGES),$(ARCH-$(stage)-y))), \
167 $(if $(CC_$(arch)),, $(eval COMPILERFAIL:=1) \
168 $(warning No compiler found for '$(arch)' architecture. Install one or use the coreboot toolchain?)) )
169 #if iasl isn't present, fail
170 #TODO: Figure out if iasl is even needed for the build.
171 $(if $(IASL),, $(eval COMPILERFAIL:=1)$(eval IASLFAIL:=1) \
172 $(warning iasl not found. Please install it or use the coreboot toolchain.))
174 ifeq ($(COMPILERFAIL),1)
177 $(warning Path to your toolchain is currently set to '$(XGCCPATH)')
180 $(warning To build the entire coreboot toolchain: run 'make crossgcc')
182 $(warning To build just IASL: run 'make iasl')
183 endif #($(IASLFAIL),1)
184 $(warning For more toolchain build targets: run 'make help_toolchain')
186 ifneq ($(CONFIG_ANY_TOOLCHAIN),y)
187 $(warning To try to use any toolchain in your path, run 'make menuconfig', then select)
188 $(warning the config option: 'General setup', and 'Allow building with any toolchain')
189 $(warning Note that this is NOT supported. Using it means you're on your own.)
191 endif #($(CONFIG_ANY_TOOLCHAIN),y)
192 $(error Halting the build)
193 endif #($(COMPILERFAIL),1)
195 endif #($(NOCOMPILE),1)