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From 8f16c15ad4e791638928beaeace86feb44623569 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Eil=C3=ADs=20N=C3=AD=20Fhlannag=C3=A1in?=
<elizabeth.flanagan@huawei.com>
Date: Mon, 18 Oct 2021 13:17:38 +0100
Subject: [PATCH] zephyr: Export an OpenEmbedded machine config
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
This commit abuses cmake to attempt to figure out the OE tune file
required and automatically generates an OpenEmbedded machine definition.
We're basically abusing the same mechanism zephyr uses to export
Makefile build information. When using this, you will need to point
to a layer with a conf/machine in it (most likely oe-core).
For testing purposes, I generate the machine confs like so:
rm -rf build/*;
for x in `west boards`;
do
west build -d build/$x --cmake-only -b $x samples/hello_world -- \
-DCONFIG_OEMACHINE_EXPORTS=y \
-DMETA_OE_BASE:STRING="/home/pidge/poky/meta/";
done
Not upstreaming this as it's only really appropriate for our needs.
Upstream-Status: Inappropriate [other]
Signed-off-by: Eilís Ní Fhlannagáin <elizabeth.flanagan@huawei.com>
---
CMakeLists.txt | 6 ++
Kconfig.zephyr | 5 ++
cmake/oemachine_exports/CMakeLists.txt | 107 +++++++++++++++++++++++++
3 files changed, 118 insertions(+)
create mode 100644 cmake/oemachine_exports/CMakeLists.txt
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 242e30cd2e..b19a908f03 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1647,3 +1647,9 @@ add_subdirectory_ifdef(
CONFIG_MAKEFILE_EXPORTS
cmake/makefile_exports
)
+
+# Finally export all build flags from Zephyr
+add_subdirectory_ifdef(
+ CONFIG_OEMACHINE_EXPORTS
+ cmake/oemachine_exports
+ )
diff --git a/Kconfig.zephyr b/Kconfig.zephyr
index 42d2d163cf..16eacb4382 100644
--- a/Kconfig.zephyr
+++ b/Kconfig.zephyr
@@ -455,6 +455,11 @@ config MAKEFILE_EXPORTS
Generates a file with build information that can be read by
third party Makefile-based build systems.
+config OEMACHINE_EXPORTS
+ bool "Generate machine configs to be used by OpenEmbedded and the Yocto Project"
+ help
+ Generates a machine configureation for OpenEmbedded and the Yocto Project.
+
endmenu
endmenu
diff --git a/cmake/oemachine_exports/CMakeLists.txt b/cmake/oemachine_exports/CMakeLists.txt
new file mode 100644
index 0000000000..8326f2271f
--- /dev/null
+++ b/cmake/oemachine_exports/CMakeLists.txt
@@ -0,0 +1,107 @@
+# Copyright (c) 2021 Huawei Inc.
+# SPDX-License-Identifier: Apache-2.0
+
+string(REPLACE _ - OE_BOARD ${BOARD})
+
+if("${ARCH}" STREQUAL "arm")
+ if(CONFIG_CPU_CORTEX_M0)
+ set(OE_TUNE tune-cortexm0)
+ elseif(CONFIG_CPU_CORTEX_M0PLUS)
+ set(OE_TUNE tune-cortexm0plus)
+ elseif(CONFIG_CPU_CORTEX_M1)
+ set(OE_TUNE tune-cortexm1)
+ elseif(CONFIG_CPU_CORTEX_M3)
+ set(OE_TUNE tune-cortexm3)
+ elseif(CONFIG_CPU_CORTEX_M4)
+ set(OE_TUNE tune-cortexm4)
+ elseif(CONFIG_CPU_CORTEX_M7)
+ set(OE_TUNE tune-cortexm7)
+ elseif(CONFIG_CPU_CORTEX_M23)
+ set(OE_TUNE tune-cortexm23)
+ elseif(CONFIG_CPU_CORTEX_M33)
+ if (CONFIG_ARMV8_M_DSP)
+ set(OE_TUNE tune-cortexm33)
+ else()
+ set(OE_TUNE tune-cortexm33plusnodsp)
+ endif()
+ elseif(CONFIG_CPU_CORTEX_M55)
+ if (CONFIG_ARMV8_M_DSP)
+ set(OE_TUNE tune-cortexm55)
+ else()
+ set(OE_TUNE tune-cortexm55plusnodsp)
+ endif()
+ elseif(CONFIG_CPU_CORTEX_R4)
+ set(OE_TUNE tune-cortexr4)
+ elseif(CONFIG_CPU_CORTEX_R5)
+ set(OE_TUNE tune-cortexr5)
+ elseif(CONFIG_CPU_CORTEX_R7)
+ set(OE_TUNE tune-cortexr7)
+ else()
+ message(FATAL_ERRORO "We currently do not support outputting build configuration for machines without GCC_M_CPU" )
+ endif()
+elseif("${ARCH}" STREQUAL "arm64")
+ if(CONFIG_CPU_CORTEX_A53)
+ set(OE_TUNE tune-cortexa53)
+ elseif(CONFIG_CPU_CORTEX_A72)
+ set(OE_TUNE tune-cortexa72)
+ elseif(CONFIG_CPU_CORTEX_R82)
+ set(OE_TUNE arch-armv8a)
+ endif()
+elseif("${ARCH}" STREQUAL "arc")
+ set(OE_TUNE tune-arc)
+elseif("${ARCH}" STREQUAL "x86")
+ if(CONFIG_X86_64)
+ set(OE_TUNE tune-core2)
+ set(DEFAULT_TUNE core2-64)
+ else()
+ set(OE_TUNE tune-corei7)
+ set(DEFAULT_TUNE core2-32)
+ endif()
+elseif("${ARCH}" STREQUAL "nios2")
+ set(OE_TUNE tune-nios2)
+else()
+ message(FATAL_ERRORO "We currently do not support outputting build configuration for ${ARCH}" )
+endif()
+
+if("${ARCH}" STREQUAL "arm")
+ if (NOT DEFAULT_TUNE)
+ string(REPLACE "tune-" "" DEFAULT_TUNE ${OE_TUNE})
+ endif()
+endif()
+
+string (REPLACE ";" "\n" MACHINE_OVERRIDES "${MACHINE_OVERRIDES}")
+
+execute_process(
+ COMMAND bash "-c" "cd ${META_OE_BASE}; find . -name ${OE_TUNE}.inc"
+ OUTPUT_VARIABLE OE_REQUIRES
+ OUTPUT_STRIP_TRAILING_WHITESPACE)
+
+if(OE_REQUIRES)
+ string(REPLACE "./" "require conf/machine/" OE_REQUIRES ${OE_REQUIRES})
+else()
+ message(FATAL_ERRORO "We were unable to find a tuning for this board. # GCC_M_CPU: ${GCC_M_CPU}\n# ARCH: ${ARCH}\n# BOARD: ${BOARD}\n" )
+endif()
+
+if(DEFAULT_TUNE)
+ set(DEFAULT_TUNE_STR "DEFAULTUNE ?= \"${DEFAULT_TUNE}\"")
+endif()
+
+set(exports
+"#@TYPE: Machine
+#@NAME: ${OE_BOARD}
+#@DESCRIPTION: Machine configuration for ${OE_BOARD} ${BUILD_VERSION_STR}
+#
+# This file is autogenerated.
+
+${OE_REQUIRES}
+
+ARCH:${OE_BOARD} = \"${ARCH}\"
+
+${DEFAULT_TUNE_STR}
+"
+ )
+
+file(GENERATE
+ OUTPUT ${CMAKE_BINARY_DIR}/${OE_BOARD}.conf
+ CONTENT "${exports}"
+)
--
2.25.1
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