Arm backend: Uplift Ethos-U SDK to 26.02 (#17903)

cc @digantdesai @SS-JIA @freddan80 @per @zingo @oscarandersson8218
@mansnils @Sebastian-Larsson @robell

Signed-off-by: Erik Lundell <erik.lundell@arm.com>

Author: Erik-Lundell

backends/arm/scripts/corstone_utils.cmake

@@ -1,4 +1,4 @@
-# Copyright 2025 Arm Limited and/or its affiliates.
+# Copyright 2025-2026 Arm Limited and/or its affiliates.
 #
 # This source code is licensed under the BSD-style license found in the
 # LICENSE file in the root directory of this source tree.
@@ -8,7 +8,7 @@ function(fetch_ethos_u_content ETHOS_SDK_PATH ET_DIR_PATH)
 
   file(MAKE_DIRECTORY ${ETHOS_SDK_PATH}/../ethos_u)
   include(FetchContent)
-  set(ethos_u_base_tag "25.05")
+  set(ethos_u_base_tag "26.02")
   FetchContent_Declare(
     ethos_u
     GIT_REPOSITORY
@@ -26,7 +26,7 @@ function(fetch_ethos_u_content ETHOS_SDK_PATH ET_DIR_PATH)
   FetchContent_MakeAvailable(ethos_u)
   # Patch manifest to remove unused projects.
   set(patch_dir "${ET_DIR_PATH}/examples/arm/ethos-u-setup")
-  set(ethos_u_base_rev "24950bd4381b6c51db0349a229f8ba86b8e1093f")
+  set(ethos_u_base_rev "26.02")
   execute_process(
     COMMAND
       bash -c
@@ -42,15 +42,15 @@ function(fetch_ethos_u_content ETHOS_SDK_PATH ET_DIR_PATH)
     )
   endif()
   # Patch core_software to remove unused projects.
-  set(core_software_base_rev "55904c3da73c876c6d6c58290938ae217a8b94bd")
+  set(core_software_base_rev "26.02")
   execute_process(
     COMMAND
       bash -c
       "pwd && source backends/arm/scripts/utils.sh && patch_repo ${ETHOS_SDK_PATH}/core_software ${core_software_base_rev} ${patch_dir}"
     WORKING_DIRECTORY ${ET_DIR_PATH} COMMAND_ECHO STDOUT
   )
   # Always patch the core_platform repo since this is fast enough.
-  set(core_platform_base_rev "1916a9c984819c35b19c9e5c4c80d47e4e866420")
+  set(core_platform_base_rev "26.02")
   execute_process(
     COMMAND
       bash -c

backends/arm/scripts/pre-push

@@ -104,7 +104,7 @@ for COMMIT in ${COMMITS}; do
     for commited_file in $commit_files; do
         # Skip files with certain extensions
         case "$commited_file" in
-            *.md|*.md.in|*.json|*.yml|*.yaml|*.cmake|.gitignore)
+            *.md|*.md.in|*.json|*.yml|*.yaml|*.cmake|*.patch|.gitignore)
                 echo -e "${INFO} Skipping license check for ${commited_file} (excluded extension)"
                 continue
                 ;;

backends/arm/third-party/ethos-u-core-driver

@@ -1,62 +1,62 @@
-From 31a3be0c97093dbd70777c644d47ce8a7a9f57b3 Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?M=C3=A5ns=20Nilsson?= <mans.nilsson@arm.com>
-Date: Fri, 13 Jun 2025 18:25:37 +0200
-Subject: [PATCH] Remove unused projects from 25.05 manifest
+From 5d9118fefaf67e3b9e2889e8913adf0fae995d80 Mon Sep 17 00:00:00 2001
+From: Erik Lundell <erik.lundell@arm.com>
+Date: Wed, 4 Mar 2026 13:38:12 +0100
+Subject: [PATCH] Remove unused projects from 26.02 manifest
 
 ---
- 25.05.json | 42 ------------------------------------------
+ 26.02.json | 42 ------------------------------------------
  1 file changed, 42 deletions(-)
 
-diff --git a/25.05.json b/25.05.json
-index 6a2697a..d248548 100644
---- a/25.05.json
-+++ b/25.05.json
+diff --git a/26.02.json b/26.02.json
+index cf80b76..90986b9 100644
+--- a/26.02.json
++++ b/26.02.json
 @@ -38,48 +38,6 @@
              "path": "core_software/cmsis-view",
              "fetchurl": "https://github.com/ARM-software/CMSIS-View.git",
-             "revision": "486ca2726d4a5de4895c9d3c273781d141b4a5b3"
+             "revision": "a0c972906c1fd0dd5718062b93cfcd142e965587"
 -        },
 -        {
 -            "path": "core_software/openamp/libmetal",
 -            "fetchurl": "https://github.com/OpenAMP/libmetal",
--            "revision": "36f87f9335f5afc3ce3a56c1069346df591094e1"
+-            "revision": "ece95f0e71811c44a4c23d9a1514f338ccf60c75"
 -        },
 -        {
 -            "path": "core_software/openamp/openamp",
 -            "fetchurl": "https://github.com/OpenAMP/open-amp",
--            "revision": "3737f8b18ad24a3b091a11cc6ea320d8b0576da5"
+-            "revision": "62b28881119277b9d2f244b2314e18bde23c296e"
 -        },
 -        {
 -            "path": "core_software/rtos/freertos/freertos_kernel",
 -            "fetchurl": "https://github.com/FreeRTOS/FreeRTOS-Kernel.git",
--            "revision": "2615dcde13d953dbe60ae1ee0cf9312458984c3a"
+-            "revision": "f1043c49d59944353291654c175852bd17b34f99"
 -        },
 -        {
 -            "path": "core_software/rtos/threadx",
 -            "fetchurl": "https://github.com/eclipse-threadx/threadx",
--            "revision": "7ad78c40e9702917264a9b722890110fdb909ebc"
+-            "revision": "4b6e8100d932a3a67b34c6eb17f84f3bffb9e2ae"
 -        },
 -        {
 -            "path": "core_software/tflite_micro",
 -            "fetchurl": "https://github.com/tensorflow/tflite-micro",
--            "revision": "9d35a74b03fa313026982abb4d2c4ffe29de88bc"
+-            "revision": "f2b2b3f51cdf97fe190ef8bd6d1839013c9c179e"
 -        },
 -        {
 -            "path": "linux_driver_stack",
 -            "fetchurl": "https://git.gitlab.arm.com/artificial-intelligence/ethos-u/ethos-u-linux-driver-stack.git",
 -            "pushurl": "ssh://git@git.gitlab.arm.com/artificial-intelligence/ethos-u/ethos-u-linux-driver-stack.git",
--            "revision": "25.05"
+-            "revision": "26.02"
 -        },
 -        {
 -            "path": "linux_driver_stack/thirdparty/tensorflow",
 -            "fetchurl": "https://github.com/tensorflow/tensorflow.git",
--            "revision": "v2.18.1"
+-            "revision": "v2.20.0"
 -        },
 -        {
 -            "path": "vela",
 -            "fetchurl": "https://git.gitlab.arm.com/artificial-intelligence/ethos-u/ethos-u-vela.git",
 -            "pushurl": "ssh://git@git.gitlab.arm.com/artificial-intelligence/ethos-u/ethos-u-vela.git",
--            "revision": "4.3.0"
+-            "revision": "5.0.0"
          }
      ]
  }