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a576355153
The CR50 board will have to have a very different RO image, let's make
it possible to override the default list of objects compiled by the
top level makefile with a board/chip specific list compiled in the
appropriate build.mk file.
The CR50 RO will never run on its own for long time, it will always
load an RW and go straight to it, so there is no need in running under
the OS control, using sophisticated console channel controls, etc.
The gist of the functionality is verifying the RW image to run and
setting up the hardware to allow the picked image to execute, it will
be added in the following patches. This change just provides the
plumbing and shows the 'hello world' implementation for the customized
RO image.
A better solution could be the ability to create distinct sets of make
variables for RO and RW, a tracker item was created to look into this.
BRANCH=None
BUG=chrome-os-partner:43025, chromium:551151
TEST=built and started ec.RO.hex on cr50, observed the 'hello world'
message on the console.
Change-Id: Ie67ff28bec3a9788898e99483eedb0ef77de38cd
Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/310410
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Reviewed-by: Bill Richardson <wfrichar@chromium.org>
205 lines
6.7 KiB
Makefile
205 lines
6.7 KiB
Makefile
# Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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#
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# Embedded Controller firmware build system
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#
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# If we came here via a symlink we restart make and deduce the correct BOARD
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# value from the current directory.
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SYMLINK := $(shell readlink $(lastword $(MAKEFILE_LIST)))
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ifneq (,$(SYMLINK))
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.PHONY: restart
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restart: .DEFAULT
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@true
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.DEFAULT:
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@$(MAKE) -C $(dir $(SYMLINK)) \
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--no-print-directory \
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$(MAKECMDGOALS) \
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BOARD=$(notdir $(shell pwd))
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else
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BOARD ?= bds
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# Directory where the board is configured (includes /$(BOARD) at the end)
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BDIR:=$(wildcard board/$(BOARD) private*/board/$(BOARD))
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# There can be only one <insert exploding windows here>
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ifeq (,$(BDIR))
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$(error unable to locate BOARD $(BOARD))
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endif
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ifneq (1,$(words $(BDIR)))
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$(error multiple definitions for BOARD $(BOARD): $(BDIR))
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endif
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PROJECT?=ec
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# Output directory for build objects
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out?=build/$(BOARD)
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# File containing configuration information
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config=$(out)/.config
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# If no key file is provided, use the default dev key
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PEM ?= $(BDIR)/dev_key.pem
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include Makefile.toolchain
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# Define the traditional first target. The dependencies of this are near the
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# bottom as they can be altered by chip and board files.
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.PHONY: all
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all:
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# The board makefile sets $CHIP and the chip makefile sets $CORE.
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# Include those now, since they must be defined for _flag_cfg below.
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include $(BDIR)/build.mk
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include chip/$(CHIP)/build.mk
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# Create uppercase config variants, to avoid mixed case constants.
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# Also translate '-' to '_', so 'cortex-m' turns into 'CORTEX_M'. This must
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# be done before evaluating config.h.
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uppercase = $(shell echo $(1) | tr '[:lower:]-' '[:upper:]_')
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UC_BOARD:=$(call uppercase,$(BOARD))
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UC_CHIP:=$(call uppercase,$(CHIP))
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UC_CHIP_FAMILY:=$(call uppercase,$(CHIP_FAMILY))
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UC_CHIP_VARIANT:=$(call uppercase,$(CHIP_VARIANT))
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UC_CORE:=$(call uppercase,$(CORE))
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UC_PROJECT:=$(call uppercase,$(PROJECT))
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# Transform the configuration into make variables. This must be done after
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# the board/project/chip/core variables are defined, since some of the configs
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# are dependent on particular configurations.
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includes=include core/$(CORE)/include $(dirs) $(out) test
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ifeq "$(TEST_BUILD)" "y"
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_tsk_lst_file:=ec.tasklist
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_tsk_lst:=$(shell echo "CONFIG_TASK_LIST CONFIG_TEST_TASK_LIST" | \
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$(CPP) -P -I$(BDIR) -Itest \
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-D"TASK_NOTEST(n, r, d, s)=" -D"TASK_ALWAYS(n, r, d, s)=n" \
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-D"TASK_TEST(n, r, d, s)=n" -imacros $(_tsk_lst_file) \
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-imacros $(PROJECT).tasklist)
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else
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_tsk_lst_file:=$(PROJECT).tasklist
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_tsk_lst:=$(shell echo "CONFIG_TASK_LIST" | $(CPP) -P \
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-I$(BDIR) -D"TASK_NOTEST(n, r, d, s)=n" \
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-D"TASK_ALWAYS(n, r, d, s)=n" -imacros $(_tsk_lst_file))
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endif
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_tsk_cfg:=$(foreach t,$(_tsk_lst) ,HAS_TASK_$(t))
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CPPFLAGS+=$(foreach t,$(_tsk_cfg),-D$(t))
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_flag_cfg:=$(shell $(CPP) $(CPPFLAGS) -P -dM -Ichip/$(CHIP) -I$(BDIR) \
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include/config.h | grep -o "\#define CONFIG_[A-Z0-9_]*" | \
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cut -c9- | sort)
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$(foreach c,$(_tsk_cfg) $(_flag_cfg),$(eval $(c)=y))
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ifneq "$(CONFIG_COMMON_RUNTIME)" "y"
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_irq_list:=$(shell $(CPP) $(CPPFLAGS) -P -Ichip/$(CHIP) -I$(BDIR) \
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-D"ENABLE_IRQ(x)=EN_IRQ x" -imacros chip/$(CHIP)/registers.h \
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$(BDIR)/ec.irqlist | grep "EN_IRQ .*" | cut -c8-)
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CPPFLAGS+=$(foreach irq,$(_irq_list),\
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-D"irq_$(irq)_handler_optional=irq_$(irq)_handler")
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endif
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# Compute RW firmware size and offset
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_rw_off_str:=$(shell echo "CONFIG_RW_MEM_OFF" | $(CPP) $(CPPFLAGS) -P \
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-Ichip/$(CHIP) -I$(BDIR) -imacros include/config.h)
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_rw_off:=$(shell echo "$$(($(_rw_off_str)))")
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_rw_size_str:=$(shell echo "CONFIG_RW_SIZE" | $(CPP) $(CPPFLAGS) -P \
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-Ichip/$(CHIP) -I$(BDIR) -imacros include/config.h)
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_rw_size:=$(shell echo "$$(($(_rw_size_str)))")
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_program_memory_base_str:=$(shell echo "CONFIG_PROGRAM_MEMORY_BASE" | \
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$(CPP) $(CPPFLAGS) -P \
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-Ichip/$(CHIP) -I$(BDIR) -imacros include/config.h)
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_program_memory_base=$(shell echo "$$(($(_program_memory_base_str)))")
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$(eval BOARD_$(UC_BOARD)=y)
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$(eval CHIP_$(UC_CHIP)=y)
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$(eval CHIP_VARIANT_$(UC_CHIP_VARIANT)=y)
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$(eval CHIP_FAMILY_$(UC_CHIP_FAMILY)=y)
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# Private subdirectories may call this from their build.mk
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objs_from_dir=$(foreach obj, $($(2)-y), $(1)/$(obj))
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# Get build configuration from sub-directories
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# Note that this re-includes the board and chip makefiles
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include $(BDIR)/build.mk
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include chip/$(CHIP)/build.mk
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include core/$(CORE)/build.mk
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include common/build.mk
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include driver/build.mk
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include power/build.mk
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-include private/build.mk
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-include private-cr51/build.mk
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include test/build.mk
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include util/build.mk
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include util/lock/build.mk
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include util/signer/build.mk
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includes+=$(includes-y)
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# Get all sources to build
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all-obj-y+=$(call objs_from_dir,core/$(CORE),core)
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all-obj-y+=$(call objs_from_dir,chip/$(CHIP),chip)
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all-obj-y+=$(call objs_from_dir,$(BDIR),board)
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all-obj-y+=$(call objs_from_dir,private,private)
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all-obj-y+=$(call objs_from_dir,private-cr51,private-cr51)
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all-obj-y+=$(call objs_from_dir,common,common)
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all-obj-y+=$(call objs_from_dir,driver,driver)
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all-obj-y+=$(call objs_from_dir,power,power)
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all-obj-y+=$(call objs_from_dir,test,$(PROJECT))
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dirs=core/$(CORE) chip/$(CHIP) $(BDIR) common power test
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dirs+= private private-cr51
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dirs+=$(shell find driver -type d)
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common_dirs=util
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ifeq ($(custom-ro_objs-y),)
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ro-objs := $(sort $(foreach obj, $(all-obj-y), $(out)/RO/$(obj)))
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else
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ro-objs := $(sort $(foreach obj, $(custom-ro_objs-y), $(out)/RO/$(obj)))
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endif
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rw-objs := $(sort $(foreach obj, $(all-obj-y), $(out)/RW/$(obj)))
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# Don't include the shared objects in the RO/RW image if we're enabling
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# the shared objects library.
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ifeq ($(CONFIG_SHAREDLIB),y)
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ro-objs := $(filter-out %_sharedlib.o, $(ro-objs))
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endif
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ro-deps := $(ro-objs:%.o=%.o.d)
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rw-deps := $(rw-objs:%.o=%.o.d)
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deps := $(ro-deps) $(rw-deps)
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.PHONY: ro rw
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$(config): $(out)/$(PROJECT).bin
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@printf '%s=y\n' $(_tsk_cfg) $(_flag_cfg) > $@
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def_all_deps:=utils ro rw $(config) $(PROJECT_EXTRA)
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all_deps?=$(def_all_deps)
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all: $(all_deps)
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ro: override BLD:=RO
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ro: $(libsharedobjs_elf-y) $(out)/RO/$(PROJECT).RO.flat
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rw: override BLD:=RW
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rw: $(libsharedobjs_elf-y) $(out)/RW/$(PROJECT).RW.flat
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# Shared objects library
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SHOBJLIB := libsharedobjs
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sharedlib-objs := $(filter %_sharedlib.o, $(all-obj-y))
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sharedlib-objs := $(foreach obj, $(sharedlib-objs), $(out)/$(SHOBJLIB)/$(obj))
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sharedlib-deps := $(sharedlib-objs:%.o=%.o.d)
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deps += $(sharedlib-deps)
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def_libsharedobjs_deps := $(sharedlib-objs)
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libsharedobjs_deps ?= $(def_libsharedobjs_deps)
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libsharedobjs-$(CONFIG_SHAREDLIB) := $(out)/$(SHOBJLIB)/$(SHOBJLIB).flat
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libsharedobjs_elf-$(CONFIG_SHAREDLIB) := \
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$(libsharedobjs-$(CONFIG_SHAREDLIB):%.flat=%.elf)
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libsharedobjs: $(libsharedobjs-y)
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include Makefile.rules
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export CROSS_COMPILE CFLAGS CC CPP LD NM AR OBJCOPY OBJDUMP
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endif # SYMLINK
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