From 9140eabbd97ae3759a8ec35efc47afef895af972 Mon Sep 17 00:00:00 2001
From: Javier Viguera <javier.viguera@digi.com>
Date: Fri, 26 Sep 2025 15:14:27 +0200
Subject: [PATCH] gcc-arm-none-eabi: bare-metal toolchain for building Cortex-M
 firmware

This matches the version used by NXP in rel_imx_6.6.52_2.2.1.

Signed-off-by: Javier Viguera <javier.viguera@digi.com>
---
 meta-digi-arm/conf/layer.conf                 |  2 ++
 .../gcc-arm-none-eabi_14.2.rel1.bb            | 21 +++++++++++++++++++
 2 files changed, 23 insertions(+)
 create mode 100644 meta-digi-arm/dynamic-layers/arm-toolchain/recipes-devtools/external-arm-toolchain/gcc-arm-none-eabi_14.2.rel1.bb

diff --git a/meta-digi-arm/conf/layer.conf b/meta-digi-arm/conf/layer.conf
index e6e938408..3f7c8ba15 100644
--- a/meta-digi-arm/conf/layer.conf
+++ b/meta-digi-arm/conf/layer.conf
@@ -10,6 +10,8 @@ BBFILE_PATTERN_digi-arm := "^${LAYERDIR}/"
 BBFILE_PRIORITY_digi-arm = "5"
 
 BBFILES_DYNAMIC += " \
+    arm-toolchain:${LAYERDIR}/dynamic-layers/arm-toolchain/*/*/*.bb \
+    arm-toolchain:${LAYERDIR}/dynamic-layers/arm-toolchain/*/*/*.bbappend \
     freescale-layer:${LAYERDIR}/dynamic-layers/freescale-layer/*/*/*.bb \
     freescale-layer:${LAYERDIR}/dynamic-layers/freescale-layer/*/*/*.bbappend \
     stm-st-stm32mp:${LAYERDIR}/dynamic-layers/stm-st-stm32mp/*/*/*.bb \
diff --git a/meta-digi-arm/dynamic-layers/arm-toolchain/recipes-devtools/external-arm-toolchain/gcc-arm-none-eabi_14.2.rel1.bb b/meta-digi-arm/dynamic-layers/arm-toolchain/recipes-devtools/external-arm-toolchain/gcc-arm-none-eabi_14.2.rel1.bb
new file mode 100644
index 000000000..d069ccb4e
--- /dev/null
+++ b/meta-digi-arm/dynamic-layers/arm-toolchain/recipes-devtools/external-arm-toolchain/gcc-arm-none-eabi_14.2.rel1.bb
@@ -0,0 +1,21 @@
+# Copyright (C) 2019 Garmin Ltd. or its subsidiaries
+# Released under the MIT license (see COPYING.MIT for the terms)
+
+require recipes-devtools/external-arm-toolchain/arm-binary-toolchain.inc
+
+COMPATIBLE_HOST = "(x86_64|aarch64).*-linux"
+
+SUMMARY = "Arm GNU Toolchain - AArch32 bare-metal target (arm-none-eabi)"
+LICENSE = "GPL-3.0-with-GCC-exception & GPL-3.0-only"
+
+LIC_FILES_CHKSUM:aarch64 = "file://share/doc/gcc/Copying.html;md5=b58b1e79cb685387c684bf647c848b82"
+LIC_FILES_CHKSUM:x86-64 = "file://share/doc/gcc/Copying.html;md5=b58b1e79cb685387c684bf647c848b82"
+
+SRC_URI = "https://developer.arm.com/-/media/Files/downloads/gnu/${PV}/binrel/arm-gnu-toolchain-${PV}-${HOST_ARCH}-${BINNAME}.tar.xz;name=gcc-${HOST_ARCH}"
+SRC_URI[gcc-aarch64.sha256sum] = "87330bab085dd8749d4ed0ad633674b9dc48b237b61069e3b481abd364d0a684"
+SRC_URI[gcc-x86_64.sha256sum] = "62a63b981fe391a9cbad7ef51b17e49aeaa3e7b0d029b36ca1e9c3b2a9b78823"
+
+S = "${WORKDIR}/arm-gnu-toolchain-${PV}-${HOST_ARCH}-${BINNAME}"
+
+UPSTREAM_CHECK_URI = "https://developer.arm.com/downloads/-/arm-gnu-toolchain-downloads"
+UPSTREAM_CHECK_REGEX = "arm-gnu-toolchain-(?P<pver>\d+\.\d*\.[A-z]*\d*).*-${HOST_ARCH}-${BINNAME}\.tar\.\w+"