Arm backend: Only fetch what is used (pytorch#11853)

Additional patches are applied during download to remove projects that
are not used.

Author: mansnils

examples/arm/ethos-u-setup/core_software/0001-Do-not-include-tflite-micro-and-rtos-projects-as-the.patch

@@ -0,0 +1,30 @@
+From 03e33214c52fd98b2adf87b2ff1c01ff91eceb52 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?M=C3=A5ns=20Nilsson?= <[email protected]>
+Date: Fri, 13 Jun 2025 20:12:28 +0200
+Subject: [PATCH] Do not include tflite micro and rtos projects as they are not
+ needed
+
+---
+ CMakeLists.txt | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index c6faad8..7c205e0 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -76,10 +76,10 @@ if (CORE_SOFTWARE_ACCELERATOR STREQUAL "NPU")
+ endif()
+ 
+ # Build Tensorflow Lite Micro library
+-include(tflite_micro.cmake)
++#include(tflite_micro.cmake)
+ 
+ # Build RTOS
+-add_subdirectory(rtos)
++#add_subdirectory(rtos)
+ 
+ # Build EventRecorder
+ include(event_recorder.cmake)
+-- 
+2.34.1
+

examples/arm/ethos-u-setup/ethos-u/0001-Remove-unused-projects-from-25.05-manifest.patch

@@ -0,0 +1,65 @@
+From 31a3be0c97093dbd70777c644d47ce8a7a9f57b3 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?M=C3=A5ns=20Nilsson?= <[email protected]>
+Date: Fri, 13 Jun 2025 18:25:37 +0200
+Subject: [PATCH] Remove unused projects from 25.05 manifest
+
+---
+ 25.05.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
+@@ -38,48 +38,6 @@
+             "path": "core_software/cmsis-view",
+             "fetchurl": "https://github.com/ARM-software/CMSIS-View.git",
+             "revision": "486ca2726d4a5de4895c9d3c273781d141b4a5b3"
+-        },
+-        {
+-            "path": "core_software/openamp/libmetal",
+-            "fetchurl": "https://github.com/OpenAMP/libmetal",
+-            "revision": "36f87f9335f5afc3ce3a56c1069346df591094e1"
+-        },
+-        {
+-            "path": "core_software/openamp/openamp",
+-            "fetchurl": "https://github.com/OpenAMP/open-amp",
+-            "revision": "3737f8b18ad24a3b091a11cc6ea320d8b0576da5"
+-        },
+-        {
+-            "path": "core_software/rtos/freertos/freertos_kernel",
+-            "fetchurl": "https://github.com/FreeRTOS/FreeRTOS-Kernel.git",
+-            "revision": "2615dcde13d953dbe60ae1ee0cf9312458984c3a"
+-        },
+-        {
+-            "path": "core_software/rtos/threadx",
+-            "fetchurl": "https://github.com/eclipse-threadx/threadx",
+-            "revision": "7ad78c40e9702917264a9b722890110fdb909ebc"
+-        },
+-        {
+-            "path": "core_software/tflite_micro",
+-            "fetchurl": "https://github.com/tensorflow/tflite-micro",
+-            "revision": "9d35a74b03fa313026982abb4d2c4ffe29de88bc"
+-        },
+-        {
+-            "path": "linux_driver_stack",
+-            "fetchurl": "https://git.gitlab.arm.com/artificial-intelligence/ethos-u/ethos-u-linux-driver-stack.git",
+-            "pushurl": "ssh://[email protected]/artificial-intelligence/ethos-u/ethos-u-linux-driver-stack.git",
+-            "revision": "25.05"
+-        },
+-        {
+-            "path": "linux_driver_stack/thirdparty/tensorflow",
+-            "fetchurl": "https://github.com/tensorflow/tensorflow.git",
+-            "revision": "v2.18.1"
+-        },
+-        {
+-            "path": "vela",
+-            "fetchurl": "https://git.gitlab.arm.com/artificial-intelligence/ethos-u/ethos-u-vela.git",
+-            "pushurl": "ssh://[email protected]/artificial-intelligence/ethos-u/ethos-u-vela.git",
+-            "revision": "4.3.0"
+         }
+     ]
+ }
+-- 
+2.34.1
+

examples/arm/executor_runner/CMakeLists.txt

@@ -52,11 +52,11 @@ if(FETCH_ETHOS_U_CONTENT)
   file(MAKE_DIRECTORY ${ETHOS_SDK_PATH}/../ethos_u)
 
   include(FetchContent)
-  set(ethos_u_base_rev "25.02")
+  set(ethos_u_base_tag "25.05")
   FetchContent_Declare(
     ethos_u
     GIT_REPOSITORY https://git.gitlab.arm.com/artificial-intelligence/ethos-u/ethos-u.git
-    GIT_TAG ${ethos_u_base_rev}
+    GIT_TAG ${ethos_u_base_tag}
     SOURCE_DIR ${ETHOS_SDK_PATH}
     BINARY_DIR ${ETHOS_SDK_PATH}
     SUBBUILD_DIR ${ETHOS_SDK_PATH}/../ethos_u-subbuild
@@ -65,17 +65,31 @@ if(FETCH_ETHOS_U_CONTENT)
 
   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")
+  execute_process(COMMAND bash -c "pwd && source backends/arm/scripts/utils.sh && patch_repo ${ETHOS_SDK_PATH} ${ethos_u_base_rev} ${patch_dir}"
+    WORKING_DIRECTORY ${ET_DIR_PATH}
+    COMMAND_ECHO STDOUT
+  )
+
   # Get ethos_u externals only if core_platform folder does not already exist.
   if(NOT EXISTS "${ETHOS_SDK_PATH}/core_platform")
-    execute_process(COMMAND ${PYTHON_EXECUTABLE} fetch_externals.py -c ${ethos_u_base_rev}.json fetch
+    execute_process(COMMAND ${PYTHON_EXECUTABLE} fetch_externals.py -c ${ethos_u_base_tag}.json fetch
                     WORKING_DIRECTORY ${ETHOS_SDK_PATH}
                     COMMAND_ECHO STDOUT
     )
   endif()
 
+  # Patch core_software to remove unused projects.
+  set(core_software_base_rev "55904c3da73c876c6d6c58290938ae217a8b94bd")
+  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 ${ET_DIR_PATH}
+    COMMAND_ECHO STDOUT
+  )
+
   # Always patch the core_platform repo since this is fast enough.
   set(core_platform_base_rev "1916a9c984819c35b19c9e5c4c80d47e4e866420")
-  set(patch_dir "${ET_DIR_PATH}/examples/arm/ethos-u-setup")
   execute_process(COMMAND bash -c "pwd && source backends/arm/scripts/utils.sh && patch_repo ${ETHOS_SDK_PATH}/core_platform ${core_platform_base_rev} ${patch_dir}"
     WORKING_DIRECTORY ${ET_DIR_PATH}
     COMMAND_ECHO STDOUT