1# 2# Copyright (c) 2016, ARM Limited and Contributors. All rights reserved. 3# 4# SPDX-License-Identifier: BSD-3-Clause 5# 6 7################################################################################ 8# Helpers for finding and referencing platform directories 9################################################################################ 10 11ifndef PLAT_HELPERS_MK 12 PLAT_HELPERS_MK := $(lastword $(MAKEFILE_LIST)) 13 14 PLAT:= ${DEFAULT_PLAT} 15 ifeq (${PLAT},) 16 $(error "Error: Unknown platform. Please use PLAT=<platform name> to specify the platform") 17 endif 18 19 # TF_PLATFORM_ROOT can be overridden for when building tools directly 20 TF_PLATFORM_ROOT ?= plat/ 21 PLAT_MAKEFILE := platform.mk 22 PLAT_DEFAULTS_MAKEFILE := platform_defaults.mk 23 24 # Generate the platforms list by recursively searching for all directories 25 # under /plat containing a PLAT_MAKEFILE. Append each platform with a `|` 26 # char and strip out the final '|'. 27 ALL_PLATFORM_MK_FILES := $(call rwildcard,${TF_PLATFORM_ROOT},${PLAT_MAKEFILE}) 28 ALL_PLATFORM_MK_DEF_FILES := $(call rwildcard,${TF_PLATFORM_ROOT},${PLAT_DEFAULTS_MAKEFILE}) 29 ALL_PLATFORM_DIRS := $(patsubst %/,%,$(dir ${ALL_PLATFORM_MK_FILES})) 30 ALL_PLATFORMS := $(sort $(notdir ${ALL_PLATFORM_DIRS})) 31 32 PLAT_MAKEFILE_FULL := $(filter %/${PLAT}/${PLAT_MAKEFILE},${ALL_PLATFORM_MK_FILES}) 33 PLAT_DEFAULTS_MAKEFILE_FULL := $(filter %/${PLAT}/${PLAT_DEFAULTS_MAKEFILE},${ALL_PLATFORM_MK_DEF_FILES}) 34 PLATFORM_LIST := $(subst ${space},|,${ALL_PLATFORMS}) 35 ifeq ($(PLAT_MAKEFILE_FULL),) 36 $(error "Error: Invalid platform. The following platforms are available: ${PLATFORM_LIST}") 37 endif 38 39 # Record the directory where the platform make file was found. 40 PLAT_DIR := $(dir ${PLAT_MAKEFILE_FULL}) 41 42endif 43