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