51edd54738
There are ARM systems which are essentially heterogeneous multicores where some cores implement a different ARM architecture version than other cores. A specific example is the tegra124 which boots on an ARMv4 coprocessor while most code, including most of the firmware, runs on the main ARMv7 core. To support SOCs like this, the plan is to generalize the ARM architecture so that all versions are available, and an SOC/CPU can then select what architecture variant should be used for each component of the firmware; bootblock, romstage, and ramstage. Old-Change-Id: I22e048c3bc72bd56371e14200942e436c1e312c2 Signed-off-by: Gabe Black <gabeblack@google.com> Reviewed-on: https://chromium-review.googlesource.com/171338 Reviewed-by: Gabe Black <gabeblack@chromium.org> Commit-Queue: Gabe Black <gabeblack@chromium.org> Tested-by: Gabe Black <gabeblack@chromium.org> (cherry picked from commit 8423a41529da0ff67fb9873be1e2beb30b09ae2d) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> ARM: Split out ARMv7 code and make it possible to have other arch versions. We don't always want to use ARMv7 code when building for ARM, so we should separate out the ARMv7 code so it can be excluded, and also make it possible to include code for some other version of the architecture instead, all per build component for cases where we need more than one architecture version at a time. The tegra124 bootblock will ultimately need to be ARMv4, but until we have some ARMv4 code to switch over to we can leave it set to ARMv7. Old-Change-Id: Ia982c91057fac9c252397b7c866224f103761cc7 Reviewed-on: https://chromium-review.googlesource.com/171400 Reviewed-by: Gabe Black <gabeblack@chromium.org> Tested-by: Gabe Black <gabeblack@chromium.org> Commit-Queue: Gabe Black <gabeblack@chromium.org> (cherry picked from commit 799514e6060aa97acdcf081b5c48f965be134483) Squashed two related patches for splitting ARM support into general ARM support and ARMv7 specific pieces. Change-Id: Ic6511507953a2223c87c55f90252c4a4e1dd6010 Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6782 Tested-by: build bot (Jenkins)
121 lines
4 KiB
PHP
121 lines
4 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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## You should have received a copy of the GNU General Public License
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## along with this program; if not, write to the Free Software
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## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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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)" $(CC)
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endif
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COREBOOT_STANDARD_STAGES := bootblock romstage ramstage
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ARCHDIR-i386 := x86
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ARCHDIR-x86_32 := x86
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ARCHDIR-arm := arm
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CFLAGS_arm += \
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-mno-unaligned-access\
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-mthumb\
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-mthumb-interwork
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toolchain_to_dir = \
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$(foreach arch,$(ARCH_SUPPORTED),\
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$(eval CPPFLAGS_$(arch) += \
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-Isrc/arch/$(ARCHDIR-$(arch))/include))
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# set_stage_toolchain: Decides the toolchain to be used by every stage
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# E.g.: If bootblock is x86_32, it sets ARCH-BOOTBLOCK-y = x86_32, whereas
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# ARCH-BOOTBLOCK-n = armv7. Then, ARCH-BOOTBLOCK-y can be used anywhere to
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# decide the compiler toolchain for bootblock stage
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# This step is essential for initializing the toolchain for coreboot standard
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# stages i.e. bootblock, romstage and ramstage, since it acts as the second
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# parameter to create_class_compiler below in init_standard_toolchain
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set_stage_toolchain= \
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$(foreach arch,$(ARCH_SUPPORTED),$(eval ARCH-$(1)-$($(shell echo CONFIG_ARCH_$(1)_$(arch) | tr '[:lower:]' '[:upper:]')) := $(arch)))
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# create_class_compiler: Used to create compiler tool set for
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# special classes
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# @1: special class
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# @2: compiler set to be used
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# e.g.: smm special class uses i386 as compiler set
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define create_class_compiler
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CC_$(1) := $(CC_$(2))
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LD_$(1) := $(LD_$(2))
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NM_$(1) := $(NM_$(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_$(2))
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LIBGCC_FILE_NAME_$(1) = $(wildcard $(shell $(CC_$(2)) $(CFLAGS_$(2)) -print-libgcc-file-name))
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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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