1 # SPDX-License-Identifier: GPL-2.0-only
4 ifeq ($(CONFIG_CCACHE),y)
6 CCACHE:=$(word 1,$(wildcard $(addsuffix /ccache,$(subst :, ,$(PATH)))))
8 $(error ccache selected, but not found in PATH)
11 export CCACHE_COMPILERCHECK=content
12 export CCACHE_BASEDIR=$(top)
14 $(foreach arch,$(ARCH_SUPPORTED), \
15 $(eval CC_$(arch):=$(CCACHE) $(CC_$(arch))))
17 HOSTCC:=$(CCACHE) $(HOSTCC)
18 HOSTCXX:=$(CCACHE) $(HOSTCXX)
21 # scan-build integration
22 ifneq ($(CCC_ANALYZER_OUTPUT_FORMAT),)
24 ifeq ($(CCC_ANALYZER_ANALYSIS),)
25 export CCC_ANALYZER_ANALYSIS := -analyzer-opt-analyze-headers
28 $(foreach arch,$(ARCH_SUPPORTED), \
29 $(eval CC_$(arch):=CCC_CC="$(CC_$(arch))" $(CC) ))
31 HOSTCC:=CCC_CC="$(HOSTCC)" $(CC)
32 HOSTCXX:=CCC_CXX="$(HOSTCXX)" $(CXX)
35 COREBOOT_STANDARD_STAGES := decompressor bootblock verstage romstage ramstage
36 MAP-decompressor := bootblock
42 ARCHDIR-arm64 := arm64
43 ARCHDIR-riscv := riscv
44 ARCHDIR-ppc64 := ppc64
47 CFLAGS_arm64 += -mgeneral-regs-only
50 CFLAGS_x86_64 += -mcmodel=large -mno-red-zone
54 GCC_ADAFLAGS_arm64 += -mgeneral-regs-only
56 GCC_ADAFLAGS_x86_32 +=
57 GCC_ADAFLAGS_x86_64 += -mcmodel=large -mno-red-zone
60 # Some boards only provide 2K stacks, so storing lots of data there leads to
61 # problems. Since C rules don't allow us to statically determine the maximum
62 # stack use, we use 1.5K as heuristic, assuming that we typically have lots
63 # of tiny stack frames and the odd large one.
65 # Store larger buffers in BSS, use static to share data in cache-as-ram
67 # Since GCCs detection of dynamic array bounds unfortunately seems to be
68 # very basic, you'll sometimes have to use a static upper bound for the
69 # size and an assert() to make sure it's honored (see gpio_base3_value()
71 # (If you absolutely need a larger stack frame and are 100% sure it cannot
72 # cause problems, you can whitelist it with #pragma diagnostic.)
73 ifeq ($(CONFIG_COMPILER_GCC),y)
74 CFLAGS_arm += -Wstack-usage=1536
75 CFLAGS_arm64 += -Wstack-usage=1536
76 CFLAGS_riscv += -Wstack-usage=1536
77 CFLAGS_ppc64 += -Wstack-usage=1536
81 $(foreach arch,$(ARCH_SUPPORTED),\
82 $(eval CPPFLAGS_$(arch) += \
83 -Isrc/arch/$(ARCHDIR-$(arch))/include))
85 # set_stage_toolchain: Decides the toolchain to be used by every stage
86 # E.g.: If bootblock is x86_32, it sets ARCH-BOOTBLOCK-y = x86_32, whereas
87 # ARCH-BOOTBLOCK-n = armv7. Then, ARCH-BOOTBLOCK-y can be used anywhere to
88 # decide the compiler toolchain for bootblock stage
89 # This step is essential for initializing the toolchain for coreboot standard
90 # stages i.e. bootblock, romstage and ramstage, since it acts as the second
91 # parameter to create_class_compiler below in init_standard_toolchain
92 map_stage = $(strip $(if $(MAP-$(1)),$(MAP-$(1)),$(1)))
93 set_stage_toolchain= \
94 $(foreach arch,$(ARCH_SUPPORTED), \
95 $(eval ARCH-$(1)-$($(shell \
96 echo CONFIG_ARCH_$(call map_stage,$(1))_$(arch) | \
97 tr '[:lower:]' '[:upper:]')) := $(arch)))
99 # standard-archs: Tell which architectures are used by the standard stages.
100 standard-archs = $(sort $(foreach stagearch, \
101 $(patsubst %,ARCH-%-y,$(COREBOOT_STANDARD_STAGES)), \
104 # create_class_compiler: Used to create compiler tool set for
107 # @2: compiler set to be used
108 # e.g.: smm special class uses i386 as compiler set
109 define create_class_compiler
110 $(if $(2),,$(warning *** The toolchain architecture for $(1) is unknown.) \
111 $(error Check your .config file for CONFIG_ARCH_$(1)_* settings))
112 CC_$(1) := $(CC_$(2))
113 GCC_$(1) := $(GCC_CC_$(2))
114 LD_$(1) := $(LD_$(2))
115 NM_$(1) := $(NM_$(2))
116 AR_$(1) := $(AR_$(2))
117 GNATBIND_$(1) := $(GNATBIND_$(2))
118 OBJCOPY_$(1) := $(OBJCOPY_$(2))
119 OBJDUMP_$(1) := $(OBJDUMP_$(2))
120 STRIP_$(1) := $(STRIP_$(2))
121 READELF_$(1) := $(READELF_$(2))
122 CFLAGS_$(1) = $$(CFLAGS_common) $$(CFLAGS_$(2))
123 ADAFLAGS_$(1) = --RTS=$$(obj)/libgnat-$(2)/ $$(ADAFLAGS_common) $$(GCC_ADAFLAGS_$(2))
124 CPPFLAGS_$(1) = $$(CPPFLAGS_common) $$(CPPFLAGS_$(2)) -D__ARCH_$(2)__
125 COMPILER_RT_$(1) := $$(COMPILER_RT_$(2))
126 COMPILER_RT_FLAGS_$(1) := $$(COMPILER_RT_FLAGS_$(2))
127 LDFLAGS_$(1) = $$(LDFLAGS_common) $$(LDFLAGS_$(2))
130 # define_class: Allows defining any program as dynamic class and compiler tool
131 # set for the same based on the architecture for which the program is to be
133 # @1: program (class name)
134 # @2: architecture for which the program needs to be compiled
135 # IMP: Ensure that define_class is called before any .c or .S files are added to
136 # the class of the program. Check subdirs-y for order of subdirectory inclusions
139 $(eval $(call create_class_compiler,$(1),$(2)))
142 # initialize standard toolchain (CC,AS and others) for give stage
143 # @1 : stage for which the toolchain is to be initialized
144 init_standard_toolchain = \
145 $(eval $(call set_stage_toolchain,$(1))) \
146 $(eval $(call create_class_compiler,$(1),$(ARCH-$(1)-y)))
149 $(foreach stage,$(COREBOOT_STANDARD_STAGES), \
150 $(eval $(call init_standard_toolchain,$(stage))))
152 $(eval $(call toolchain_to_dir))
156 # Test for coreboot toolchain (except when explicitly not requested)
157 ifneq ($(NOCOMPILE),1)
158 # Only run if we're doing a build (not for tests, kconfig, ...)
159 # rationale: gcc versions by Linux distributions tend to be quite messed up
160 # llvm/clang also needs patches supplied by the coreboot build
164 ifneq ($(CONFIG_ANY_TOOLCHAIN),y)
165 # Verify that the coreboot toolchain is being used.
166 $(foreach arch,$(sort $(foreach stage,\
167 $(COREBOOT_STANDARD_STAGES),$(ARCH-$(stage)-y))), \
168 $(if $(shell if [ -n "$(CC_$(arch))" ]; then \
169 $(CC_$(arch)) -v 2>&1 | grep -q "coreboot toolchain" || \
170 echo not-coreboot; else echo not-coreboot; fi), \
171 $(eval COMPILERFAIL:=1)\
172 $(warning The coreboot toolchain for '$(arch)'\
173 architecture was not found.)))
174 # If iasl doesn't match the current coreboot version, fail the test
175 # TODO: Figure out if iasl is even needed for the build.
176 $(if $(shell if [ -n "$(IASL)" ]; then \
177 $(IASL) -v 2>&1 | grep -q "coreboot toolchain" || \
178 echo not-coreboot; else echo not-coreboot; fi), \
179 $(eval COMPILERFAIL:=1)$(eval IASLFAIL:=1)\
180 $(warning The coreboot toolchain version of iasl \
181 '$(shell util/crossgcc/buildgcc -s iasl)' was not found))
182 else #$(CONFIG_ANY_TOOLCHAIN)
183 # If the coreboot toolchain isn't being used, verify that there is A toolchain
184 $(foreach arch,$(sort \
185 $(foreach stage,$(COREBOOT_STANDARD_STAGES),$(ARCH-$(stage)-y))), \
186 $(if $(CC_$(arch)),, $(eval COMPILERFAIL:=1) \
187 $(warning No compiler found for '$(arch)' architecture. \
188 Install one or use the coreboot toolchain?)) )
189 # If iasl isn't present, fail
190 # TODO: Figure out if iasl is even needed for the build.
191 $(if $(IASL),, $(eval COMPILERFAIL:=1)$(eval IASLFAIL:=1) \
192 $(warning iasl not found. \
193 Please install it or use the coreboot toolchain.))
196 # If the compiler check failed, print out warnings
197 ifeq ($(COMPILERFAIL),1)
200 $(warning Path to your toolchain is currently set to '$(XGCCPATH)')
203 $(warning To build the entire coreboot toolchain: run 'make crossgcc')
205 $(warning To build just IASL: run 'make iasl')
206 endif #($(IASLFAIL),1)
207 $(warning For more toolchain build targets: run 'make help_toolchain')
209 ifneq ($(CONFIG_ANY_TOOLCHAIN),y)
210 $(warning To try to use any toolchain in your path, \
211 run 'make menuconfig', then select)
212 $(warning the config option: 'General setup', \
213 and 'Allow building with any toolchain')
214 $(warning Note that this is NOT supported. \
215 Using it means you're on your own.)
217 endif #($(CONFIG_ANY_TOOLCHAIN),y)
218 $(error Halting the build)
219 endif #($(COMPILERFAIL),1)
221 endif #($(NOCOMPILE),1)
223 # Run the toolchain version checks if the requested target is 'test-toolchain'
224 # Checks the versions of GCC, binutils, clang, and IASL
225 ifneq ($(MAKECMDGOALS),)
226 ifneq ($(filter test-toolchain,$(MAKECMDGOALS)),)
227 $(foreach arch, $(ARCH_SUPPORTED), \
228 $(if $(shell if [ -n "$(GCC_CC_$(arch))" ]; then \
229 $(GCC_CC_$(arch)) --version 2>&1 | head -n1 | rev | \
230 cut -d ' ' -f 1 | rev | \
231 grep -q "$$(util/crossgcc/buildgcc -s gcc)" || \
232 echo not-current; fi), \
233 $(eval COMPILER_OUT_OF_DATE:=1) \
234 $(warning The coreboot toolchain version of gcc for '$(arch)' \
235 architecture is not the current version.) \
236 $(warning $(arch) gcc version from buildgcc: \
237 $(shell util/crossgcc/buildgcc -s gcc)) \
238 $(warning $(arch) version of gcc executable: \
239 $(shell $(GCC_CC_$(arch)) --version | head -n1 | \
240 rev | cut -d ' ' -f 1 | rev))) \
241 $(if $(shell if [ -n "$(CLANG_CC_$(arch))" ]; then \
242 $(CLANG_CC_$(arch)) --version 2>&1 | \
243 sed 's/.*clang version/clang version/' | \
244 head -n1 | cut -d ' ' -f 3 | \
245 grep -q "$(shell util/crossgcc/buildgcc -s clang)" || \
246 echo not-current; fi), \
247 $(eval COMPILER_OUT_OF_DATE:=1) \
248 $(warning The coreboot toolchain version of clang for \
249 '$(arch)' architecture is not the current version.) \
250 $(warning $(arch) clang version from buildgcc: \
251 $(shell util/crossgcc/buildgcc -s clang)) \
252 $(warning $(arch) version of clang executable: \
253 $(shell $(CLANG_CC_$(arch)) --version 2>&1 | \
254 sed 's/.*clang version/clang version/' | \
255 head -n1 | cut -d ' ' -f 3))) \
256 $(if $(shell if [ "$(OBJDUMP_$(arch))" != "invalidobjdump" ]; then \
257 $(OBJDUMP_$(arch)) -v 2>&1 | \
258 grep -q "$(shell util/crossgcc/buildgcc -s binutils)" || \
259 echo not-current; fi), \
260 $(eval COMPILER_OUT_OF_DATE:=1)\
261 $(warning The coreboot toolchain version of binutils for \
262 '$(arch)' architecture is not the current version.)) \
264 $(if $(shell if [ -n "$(IASL)" ]; then $(IASL) -v 2>&1 | \
265 grep -q "$(shell util/crossgcc/buildgcc -s iasl)" || \
266 echo not-coreboot; fi), \
267 $(eval COMPILER_OUT_OF_DATE:=1)\
268 $(warning The coreboot toolchain version of iasl \
269 is not the current version) \
270 $(warning $(arch) iasl version from buildgcc: \
271 $(shell util/crossgcc/buildgcc -s iasl)) \
272 $(warning $(arch) version of iasl executable: \
273 $(shell $(IASL) -v 2>&1 | \
274 grep ASL+ | rev | cut -f 1 -d ' ' | rev)))
275 $(eval UPDATED_SUBMODULES:=1)
276 endif #($(filter crossgcc_check%,$(MAKECMDGOALS)),)
277 endif #($(MAKECMDGOALS),)