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Diffstat (limited to 'make_helpers/plat_helpers.mk')
| -rw-r--r-- | make_helpers/plat_helpers.mk | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/make_helpers/plat_helpers.mk b/make_helpers/plat_helpers.mk new file mode 100644 index 00000000..a2f383a5 --- /dev/null +++ b/make_helpers/plat_helpers.mk @@ -0,0 +1,38 @@ +# +# Copyright (c) 2016, ARM Limited and Contributors. All rights reserved. +# +# SPDX-License-Identifier: BSD-3-Clause +# + +################################################################################ +# Helpers for finding and referencing platform directories +################################################################################ + +ifndef PLAT_HELPERS_MK + PLAT_HELPERS_MK := $(lastword $(MAKEFILE_LIST)) + + ifeq (${PLAT},) + $(error "Error: Unknown platform. Please use PLAT=<platform name> to specify the platform") + endif + + # PLATFORM_ROOT can be overridden for when building tools directly + PLATFORM_ROOT ?= plat/ + PLAT_MAKEFILE := platform.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 := $(call rwildcard,${PLATFORM_ROOT},${PLAT_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}) + PLATFORM_LIST := $(subst ${space},|,${ALL_PLATFORMS}) + ifeq ($(PLAT_MAKEFILE_FULL),) + $(error "Error: Invalid platform. The following platforms are available: ${PLATFORM_LIST}") + endif + + # Record the directory where the platform make file was found. + PLAT_DIR := $(dir ${PLAT_MAKEFILE_FULL}) + +endif |