182 lines
6.7 KiB
PHP
182 lines
6.7 KiB
PHP
##
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## This file is part of the coreboot project.
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##
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## Copyright (C) 2014 Google Inc
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##
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## This program is free software; you can redistribute it and/or modify
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## it under the terms of the GNU General Public License as published by
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## the Free Software Foundation; version 2 of the License.
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##
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## This program is distributed in the hope that it will be useful,
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## but WITHOUT ANY WARRANTY; without even the implied warranty of
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## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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## GNU General Public License for more details.
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##
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# ccache integration
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ifeq ($(CONFIG_CCACHE),y)
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CCACHE:=$(word 1,$(wildcard $(addsuffix /ccache,$(subst :, ,$(PATH)))))
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ifeq ($(CCACHE),)
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$(error ccache selected, but not found in PATH)
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endif
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export CCACHE_COMPILERCHECK=content
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export CCACHE_BASEDIR=$(top)
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$(foreach arch,$(ARCH_SUPPORTED), \
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$(eval CC_$(arch):=$(CCACHE) $(CC_$(arch))))
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HOSTCC:=$(CCACHE) $(HOSTCC)
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HOSTCXX:=$(CCACHE) $(HOSTCXX)
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ROMCC=$(CCACHE) $(ROMCC_BIN)
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endif
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# scan-build integration
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ifneq ($(CCC_ANALYZER_OUTPUT_FORMAT),)
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ifeq ($(CCC_ANALYZER_ANALYSIS),)
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export CCC_ANALYZER_ANALYSIS := -analyzer-opt-analyze-headers
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endif
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$(foreach arch,$(ARCH_SUPPORTED), \
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$(eval CC_$(arch):=CCC_CC="$(CC_$(arch))" $(CC) ))
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HOSTCC:=CCC_CC="$(HOSTCC)" $(CC)
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HOSTCXX:=CCC_CXX="$(HOSTCXX)" $(CXX)
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ROMCC=CCC_CC="$(ROMCC_BIN)" $(CC)
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endif
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COREBOOT_STANDARD_STAGES := bootblock libverstage verstage romstage ramstage
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MAP-libverstage := verstage
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ARCHDIR-i386 := x86
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ARCHDIR-x86_32 := x86
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ARCHDIR-x86_64 := x86
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ARCHDIR-arm := arm
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ARCHDIR-arm64 := arm64
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ARCHDIR-riscv := riscv
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ARCHDIR-mips := mips
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CFLAGS_arm +=
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CFLAGS_arm64 += -mgeneral-regs-only
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CFLAGS_mips += -mips32r2 -G 0 -mno-abicalls -fno-pic
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CFLAGS_riscv +=
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CFLAGS_x86_32 +=
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CFLAGS_x86_64 += -mcmodel=large -mno-red-zone
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# Some boards only provide 2K stacks, so storing lots of data there leads to
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# problems. Since C rules don't allow us to statically determine the maximum
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# stack use, we use 1.5K as heuristic, assuming that we typically have lots
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# of tiny stack frames and the odd large one.
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#
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# Store larger buffers in BSS, use MAYBE_STATIC to share code with __PRE_RAM__
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# on x86.
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# Since GCCs detection of dynamic array bounds unfortunately seems to be
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# very basic, you'll sometimes have to use a static upper bound for the
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# size and an assert() to make sure it's honored (see gpio_base3_value()
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# for an example).
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# (If you absolutely need a larger stack frame and are 100% sure it cannot
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# cause problems, you can whitelist it with #pragma diagnostic.)
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CFLAGS_arm += -Wstack-usage=1536
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CFLAGS_arm64 += -Wstack-usage=1536
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CFLAGS_mips += -Wstack-usage=1536
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CFLAGS_riscv += -Wstack-usage=1536
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toolchain_to_dir = \
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$(foreach arch,$(ARCH_SUPPORTED),\
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$(eval CPPFLAGS_$(arch) += \
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-Isrc/arch/$(ARCHDIR-$(arch))/include))
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# set_stage_toolchain: Decides the toolchain to be used by every stage
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# E.g.: If bootblock is x86_32, it sets ARCH-BOOTBLOCK-y = x86_32, whereas
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# ARCH-BOOTBLOCK-n = armv7. Then, ARCH-BOOTBLOCK-y can be used anywhere to
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# decide the compiler toolchain for bootblock stage
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# This step is essential for initializing the toolchain for coreboot standard
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# stages i.e. bootblock, romstage and ramstage, since it acts as the second
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# parameter to create_class_compiler below in init_standard_toolchain
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map_stage = $(strip $(if $(MAP-$(1)),$(MAP-$(1)),$(1)))
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set_stage_toolchain= \
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$(foreach arch,$(ARCH_SUPPORTED),$(eval ARCH-$(1)-$($(shell echo CONFIG_ARCH_$(call map_stage,$(1))_$(arch) | tr '[:lower:]' '[:upper:]')) := $(arch)))
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# create_class_compiler: Used to create compiler tool set for
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# special classes
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# @1: special class
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# @2: compiler set to be used
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# e.g.: smm special class uses i386 as compiler set
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define create_class_compiler
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$(if $(2),,$(error building $(1) without the required toolchain))
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CC_$(1) := $(CC_$(2))
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LD_$(1) := $(LD_$(2))
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NM_$(1) := $(NM_$(2))
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AR_$(1) := $(AR_$(2))
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OBJCOPY_$(1) := $(OBJCOPY_$(2))
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OBJDUMP_$(1) := $(OBJDUMP_$(2))
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STRIP_$(1) := $(STRIP_$(2))
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READELF_$(1) := $(READELF_$(2))
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CFLAGS_$(1) = $$(CFLAGS_common) $$(CFLAGS_$(2))
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CPPFLAGS_$(1) = $$(CPPFLAGS_common) $$(CPPFLAGS_$(2)) -D__ARCH_$(2)__
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COMPILER_RT_$(1) := $$(COMPILER_RT_$(2))
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COMPILER_RT_FLAGS_$(1) := $$(COMPILER_RT_FLAGS_$(2))
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LDFLAGS_$(1) = $$(LDFLAGS_common) $$(LDFLAGS_$(2))
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endef
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# define_class: Allows defining any program as dynamic class and compiler tool
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# set for the same based on the architecture for which the program is to be
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# compiled
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# @1: program (class name)
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# @2: architecture for which the program needs to be compiled
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# IMP: Ensure that define_class is called before any .c or .S files are added to
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# the class of the program. Check subdirs-y for order of subdirectory inclusions
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define define_class
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classes-y += $(1)
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$(eval $(call create_class_compiler,$(1),$(2)))
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endef
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# initialize standard toolchain (CC,AS and others) for give stage
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# @1 : stage for which the toolchain is to be initialized
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init_standard_toolchain = \
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$(eval $(call set_stage_toolchain,$(1))) \
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$(eval $(call create_class_compiler,$(1),$(ARCH-$(1)-y)))
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init_stages = \
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$(foreach stage,$(COREBOOT_STANDARD_STAGES),$(eval $(call init_standard_toolchain,$(stage))))
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$(eval $(call toolchain_to_dir))
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$(call init_stages)
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# Test for coreboot toolchain (except when explicitly not requested)
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ifneq ($(NOCOMPILE),1)
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# only run if we're doing a build (not for tests, kconfig, ...), using gcc
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# rationale: gcc versions by Linux distributions tend to be quite messed up
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COMPILERFAIL:=0
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IASLFAIL:=0
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ifeq ($(CONFIG_COMPILER_GCC),y)
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ifneq ($(CONFIG_ANY_TOOLCHAIN),y)
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$(foreach arch,$(sort $(foreach stage,$(COREBOOT_STANDARD_STAGES),$(ARCH-$(stage)-y))), \
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$(if $(shell if [ -n "$(CC_$(arch))" ]; then $(CC_$(arch)) -v 2>&1 |grep -q "gcc version .*coreboot toolchain" || echo not-coreboot; else echo not-coreboot; fi), \
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$(eval COMPILERFAIL:=1)$(warning Please use the coreboot toolchain for '$(arch)')))
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#if iasl doesn't match the current coreboot version, fail the test
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$(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), \
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$(eval COMPILERFAIL:=1)$(eval IASLFAIL:=1)$(warning Please use the coreboot toolchain version of iasl - $(shell util/crossgcc/buildgcc -s iasl)))
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endif
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endif
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endif
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ifeq ($(COMPILERFAIL),1)
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ifneq ($(XGCCPATH),)
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$(warning )
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$(warning Path to your toolchain is currently set to '$(XGCCPATH)')
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endif
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$(warning )
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$(warning To build the entire coreboot toolchain: make crossgcc)
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ifeq ($(IASLFAIL),1)
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$(warning To build just IASL: make iasl)
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endif
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$(warning For more toolchain build targets: make help_toolchain)
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$(warning )
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$(warning *** To try to use your own toolchain, run 'make menuconfig', then select the)
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$(warning *** config option: General setup -> Allow building with any toolchain)
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$(error Note that this is NOT supported. Using it means you're on your own)
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endif
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