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feat(build): add ability to define platform specific defaults

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In some cases it maybe needed to override some default settings on a
particular platform. For example, enable ENABLE_LTO on a size
constrained platform.

Change-Id: I556d26f6b81c0f3ceb40b7196180995dde22afd0
Signed-off-by: Andrey Skvortsov <andrej.skvortzov@gmail.com>
This commit is contained in:
Andrey Skvortsov 2024-02-18 11:43:12 +03:00
parent a16dad0b22
commit 1b2fb6adb5
2 changed files with 10 additions and 2 deletions
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8
Makefile
View file

@ -32,6 +32,12 @@ include ${MAKE_HELPERS_DIRECTORY}common.mk
################################################################################
include ${MAKE_HELPERS_DIRECTORY}defaults.mk
include ${MAKE_HELPERS_DIRECTORY}plat_helpers.mk
# To be able to set platform specific defaults
ifneq ($(PLAT_DEFAULTS_MAKEFILE_FULL),)
include ${PLAT_DEFAULTS_MAKEFILE_FULL}
endif
################################################################################
# Configure the toolchains used to build TF-A and its tools
@ -53,7 +59,6 @@ include ${MAKE_HELPERS_DIRECTORY}toolchain.mk
# Assertions enabled for DEBUG builds by default
ENABLE_ASSERTIONS := ${DEBUG}
ENABLE_PMF := ${ENABLE_RUNTIME_INSTRUMENTATION}
PLAT := ${DEFAULT_PLAT}
################################################################################
# Checkpatch script options
@ -418,7 +423,6 @@ include common/backtrace/backtrace.mk
################################################################################
# Generic definitions
################################################################################
include ${MAKE_HELPERS_DIRECTORY}plat_helpers.mk
ifeq (${BUILD_BASE},)
BUILD_BASE := ./build

4
make_helpers/plat_helpers.mk
View file

@ -11,6 +11,7 @@
ifndef PLAT_HELPERS_MK
PLAT_HELPERS_MK := $(lastword $(MAKEFILE_LIST))
PLAT:= ${DEFAULT_PLAT}
ifeq (${PLAT},)
$(error "Error: Unknown platform. Please use PLAT=<platform name> to specify the platform")
endif
@ -18,15 +19,18 @@ ifndef PLAT_HELPERS_MK
# TF_PLATFORM_ROOT can be overridden for when building tools directly
TF_PLATFORM_ROOT ?= plat/
PLAT_MAKEFILE := platform.mk
PLAT_DEFAULTS_MAKEFILE := platform_defaults.mk
# Generate the platforms list by recursively searching for all directories
# under /plat containing a PLAT_MAKEFILE. Append each platform with a `|`
# char and strip out the final '|'.
ALL_PLATFORM_MK_FILES := $(call rwildcard,${TF_PLATFORM_ROOT},${PLAT_MAKEFILE})
ALL_PLATFORM_MK_DEF_FILES := $(call rwildcard,${TF_PLATFORM_ROOT},${PLAT_DEFAULTS_MAKEFILE})
ALL_PLATFORM_DIRS := $(patsubst %/,%,$(dir ${ALL_PLATFORM_MK_FILES}))
ALL_PLATFORMS := $(sort $(notdir ${ALL_PLATFORM_DIRS}))
PLAT_MAKEFILE_FULL := $(filter %/${PLAT}/${PLAT_MAKEFILE},${ALL_PLATFORM_MK_FILES})
PLAT_DEFAULTS_MAKEFILE_FULL := $(filter %/${PLAT}/${PLAT_DEFAULTS_MAKEFILE},${ALL_PLATFORM_MK_DEF_FILES})
PLATFORM_LIST := $(subst ${space},|,${ALL_PLATFORMS})
ifeq ($(PLAT_MAKEFILE_FULL),)
$(error "Error: Invalid platform. The following platforms are available: ${PLATFORM_LIST}")