1231c1470SEvan Lloyd# 2231c1470SEvan Lloyd# Copyright (c) 2016, ARM Limited and Contributors. All rights reserved. 3231c1470SEvan Lloyd# 4*82cb2c1aSdp-arm# SPDX-License-Identifier: BSD-3-Clause 5231c1470SEvan Lloyd# 6231c1470SEvan Lloyd 7231c1470SEvan Lloyd################################################################################ 8231c1470SEvan Lloyd# Helpers for finding and referencing platform directories 9231c1470SEvan Lloyd################################################################################ 10231c1470SEvan Lloyd 11231c1470SEvan Lloydifndef PLAT_HELPERS_MK 12231c1470SEvan Lloyd PLAT_HELPERS_MK := $(lastword $(MAKEFILE_LIST)) 13231c1470SEvan Lloyd 14231c1470SEvan Lloyd ifeq (${PLAT},) 15231c1470SEvan Lloyd $(error "Error: Unknown platform. Please use PLAT=<platform name> to specify the platform") 16231c1470SEvan Lloyd endif 17231c1470SEvan Lloyd 18231c1470SEvan Lloyd # PLATFORM_ROOT can be overridden for when building tools directly 19231c1470SEvan Lloyd PLATFORM_ROOT ?= plat/ 20231c1470SEvan Lloyd PLAT_MAKEFILE := platform.mk 21231c1470SEvan Lloyd 22231c1470SEvan Lloyd # Generate the platforms list by recursively searching for all directories 23231c1470SEvan Lloyd # under /plat containing a PLAT_MAKEFILE. Append each platform with a `|` 24231c1470SEvan Lloyd # char and strip out the final '|'. 25231c1470SEvan Lloyd ALL_PLATFORM_MK_FILES := $(call rwildcard,${PLATFORM_ROOT},${PLAT_MAKEFILE}) 26231c1470SEvan Lloyd ALL_PLATFORM_DIRS := $(patsubst %/,%,$(dir ${ALL_PLATFORM_MK_FILES})) 27231c1470SEvan Lloyd ALL_PLATFORMS := $(sort $(notdir ${ALL_PLATFORM_DIRS})) 28231c1470SEvan Lloyd 29231c1470SEvan Lloyd PLAT_MAKEFILE_FULL := $(filter %/${PLAT}/${PLAT_MAKEFILE},${ALL_PLATFORM_MK_FILES}) 30231c1470SEvan Lloyd PLATFORM_LIST := $(subst ${space},|,${ALL_PLATFORMS}) 31231c1470SEvan Lloyd ifeq ($(PLAT_MAKEFILE_FULL),) 32231c1470SEvan Lloyd $(error "Error: Invalid platform. The following platforms are available: ${PLATFORM_LIST}") 33231c1470SEvan Lloyd endif 34231c1470SEvan Lloyd 35231c1470SEvan Lloyd # Record the directory where the platform make file was found. 36231c1470SEvan Lloyd PLAT_DIR := $(dir ${PLAT_MAKEFILE_FULL}) 37231c1470SEvan Lloyd 38231c1470SEvan Lloydendif 39