# SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
|
#
|
# (C) COPYRIGHT 2021-2022 ARM Limited. All rights reserved.
|
#
|
# This program is free software and is provided to you under the terms of the
|
# GNU General Public License version 2 as published by the Free Software
|
# Foundation, and any use by you of this program is subject to the terms
|
# of such GNU 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.
|
#
|
# You should have received a copy of the GNU General Public License
|
# along with this program; if not, you can access it online at
|
# http://www.gnu.org/licenses/gpl-2.0.html.
|
#
|
#
|
|
#
|
# Paths
|
#
|
KERNEL_SRC ?= /lib/modules/$(shell uname -r)/build
|
KDIR ?= $(KERNEL_SRC)
|
|
ifeq ($(KDIR),)
|
$(error Must specify KDIR to point to the kernel to target))
|
endif
|
|
vars :=
|
#
|
# Default configuration values
|
#
|
CONFIG_MALI_BASE_MODULES ?= n
|
|
ifeq ($(CONFIG_MALI_BASE_MODULES),y)
|
CONFIG_MALI_CSF_SUPPORT ?= n
|
|
ifneq ($(CONFIG_DMA_SHARED_BUFFER),n)
|
CONFIG_DMA_SHARED_BUFFER_TEST_EXPORTER ?= y
|
else
|
# Prevent misuse when CONFIG_DMA_SHARED_BUFFER=n
|
CONFIG_DMA_SHARED_BUFFER_TEST_EXPORTER = n
|
endif
|
|
CONFIG_MALI_MEMORY_GROUP_MANAGER ?= y
|
|
ifneq ($(CONFIG_MALI_CSF_SUPPORT), n)
|
CONFIG_MALI_PROTECTED_MEMORY_ALLOCATOR ?= y
|
endif
|
|
else
|
# Prevent misuse when CONFIG_MALI_BASE_MODULES=n
|
CONFIG_DMA_SHARED_BUFFER_TEST_EXPORTER = n
|
CONFIG_MALI_MEMORY_GROUP_MANAGER = n
|
CONFIG_MALI_PROTECTED_MEMORY_ALLOCATOR = n
|
|
endif
|
|
CONFIGS := \
|
CONFIG_MALI_BASE_MODULES \
|
CONFIG_MALI_CSF_SUPPORT \
|
CONFIG_DMA_SHARED_BUFFER_TEST_EXPORTER \
|
CONFIG_MALI_MEMORY_GROUP_MANAGER \
|
CONFIG_MALI_PROTECTED_MEMORY_ALLOCATOR \
|
|
|
#
|
# MAKE_ARGS to pass the custom CONFIGs on out-of-tree build
|
#
|
# Generate the list of CONFIGs and values.
|
# $(value config) is the name of the CONFIG option.
|
# $(value $(value config)) is its value (y, m).
|
# When the CONFIG is not set to y or m, it defaults to n.
|
MAKE_ARGS := $(foreach config,$(CONFIGS), \
|
$(if $(filter y m,$(value $(value config))), \
|
$(value config)=$(value $(value config)), \
|
$(value config)=n))
|
|
#
|
# EXTRA_CFLAGS to define the custom CONFIGs on out-of-tree build
|
#
|
# Generate the list of CONFIGs defines with values from CONFIGS.
|
# $(value config) is the name of the CONFIG option.
|
# When set to y or m, the CONFIG gets defined to 1.
|
EXTRA_CFLAGS := $(foreach config,$(CONFIGS), \
|
$(if $(filter y m,$(value $(value config))), \
|
-D$(value config)=1))
|
|
KBUILD_CFLAGS += -Wall -Werror
|
|
ifeq ($(CONFIG_GCOV_KERNEL), y)
|
KBUILD_CFLAGS += $(call cc-option, -ftest-coverage)
|
KBUILD_CFLAGS += $(call cc-option, -fprofile-arcs)
|
EXTRA_CFLAGS += -DGCOV_PROFILE=1
|
endif
|
|
ifeq ($(CONFIG_MALI_KCOV),y)
|
KBUILD_CFLAGS += $(call cc-option, -fsanitize-coverage=trace-cmp)
|
EXTRA_CFLAGS += -DKCOV=1
|
EXTRA_CFLAGS += -DKCOV_ENABLE_COMPARISONS=1
|
endif
|
|
# The following were added to align with W=1 in scripts/Makefile.extrawarn
|
# from the Linux source tree (v5.18.14)
|
KBUILD_CFLAGS += -Wextra -Wunused -Wno-unused-parameter
|
KBUILD_CFLAGS += -Wmissing-declarations
|
KBUILD_CFLAGS += -Wmissing-format-attribute
|
KBUILD_CFLAGS += -Wmissing-prototypes
|
KBUILD_CFLAGS += -Wold-style-definition
|
# The -Wmissing-include-dirs cannot be enabled as the path to some of the
|
# included directories change depending on whether it is an in-tree or
|
# out-of-tree build.
|
KBUILD_CFLAGS += $(call cc-option, -Wunused-but-set-variable)
|
KBUILD_CFLAGS += $(call cc-option, -Wunused-const-variable)
|
KBUILD_CFLAGS += $(call cc-option, -Wpacked-not-aligned)
|
KBUILD_CFLAGS += $(call cc-option, -Wstringop-truncation)
|
# The following turn off the warnings enabled by -Wextra
|
KBUILD_CFLAGS += -Wno-sign-compare
|
KBUILD_CFLAGS += -Wno-shift-negative-value
|
# This flag is needed to avoid build errors on older kernels
|
KBUILD_CFLAGS += $(call cc-option, -Wno-cast-function-type)
|
|
KBUILD_CPPFLAGS += -DKBUILD_EXTRA_WARN1
|
|
# The following were added to align with W=2 in scripts/Makefile.extrawarn
|
# from the Linux source tree (v5.18.14)
|
KBUILD_CFLAGS += -Wdisabled-optimization
|
# The -Wshadow flag cannot be enabled unless upstream kernels are
|
# patched to fix redefinitions of certain built-in functions and
|
# global variables.
|
KBUILD_CFLAGS += $(call cc-option, -Wlogical-op)
|
KBUILD_CFLAGS += -Wmissing-field-initializers
|
# -Wtype-limits must be disabled due to build failures on kernel 5.x
|
KBUILD_CFLAGS += -Wno-type-limit
|
KBUILD_CFLAGS += $(call cc-option, -Wmaybe-uninitialized)
|
KBUILD_CFLAGS += $(call cc-option, -Wunused-macros)
|
|
KBUILD_CPPFLAGS += -DKBUILD_EXTRA_WARN2
|
|
# This warning is disabled to avoid build failures in some kernel versions
|
KBUILD_CFLAGS += -Wno-ignored-qualifiers
|
|
all:
|
$(MAKE) -C $(KDIR) M=$(CURDIR) $(MAKE_ARGS) EXTRA_CFLAGS="$(EXTRA_CFLAGS)" KBUILD_EXTRA_SYMBOLS="$(EXTRA_SYMBOLS)" modules
|
|
modules_install:
|
$(MAKE) -C $(KDIR) M=$(CURDIR) $(MAKE_ARGS) modules_install
|
|
clean:
|
$(MAKE) -C $(KDIR) M=$(CURDIR) $(MAKE_ARGS) clean
|
