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 $(MAKEFILE_LIST)) 13 14 ifeq (${PLAT},) 15 $(error "Error: Unknown platform. Please use PLAT=<platform name> to specify the platform") 16 endif 17 18 # TF_PLATFORM_ROOT can be overridden for when building tools directly 19 TF_PLATFORM_ROOT ?= plat/ 20 PLAT_MAKEFILE := platform.mk 21 22 # Generate the platforms list by recursively searching for all directories 23 # under /plat containing a PLAT_MAKEFILE. Append each platform with a `|` 24 # char and strip out the final '|'. 25 ALL_PLATFORM_MK_FILES := $(call rwildcard,${TF_PLATFORM_ROOT},${PLAT_MAKEFILE}) 26 ALL_PLATFORM_DIRS := $(patsubst %/,%,$(dir ${ALL_PLATFORM_MK_FILES})) 27 ALL_PLATFORMS := $(sort $(notdir ${ALL_PLATFORM_DIRS})) 28 29 PLAT_MAKEFILE_FULL := $(filter %/${PLAT}/${PLAT_MAKEFILE},${ALL_PLATFORM_MK_FILES}) 30 PLATFORM_LIST := $(subst ${space},|,${ALL_PLATFORMS}) 31 ifeq ($(PLAT_MAKEFILE_FULL),) 32 $(error "Error: Invalid platform. The following platforms are available: ${PLATFORM_LIST}") 33 endif 34 35 # Record the directory where the platform make file was found. 36 PLAT_DIR := $(dir ${PLAT_MAKEFILE_FULL}) 37 38endif 39