diff --git a/.github/local/Makefile.local b/.github/local/Makefile.local
new file mode 100644
index 0000000..10a62b7
--- /dev/null
+++ b/.github/local/Makefile.local
@@ -0,0 +1,39 @@
+SRC_DIR        := src
+
+debuild: build
+
+.PHONY: pre_build_dep
+pre_build_dep:
+	sudo apt-get update
+	sudo apt-get install -y --no-install-recommends docker.io
+
+.PHONY: main_build
+main_build: build-qcom
+
+# ===== Qualcomm Snapdragon (Hexagon DSP) =====
+PKG_QCOM       := llama.cpp-qcom
+BUILD_QCOM     := $(SRC_DIR)/build-qcom
+INSTALL_QCOM   := $(SRC_DIR)/install-qcom
+DOCKER_QCOM    := ghcr.io/snapdragon-toolchain/arm64-linux:v0.1
+
+.PHONY: build-qcom
+build-qcom:
+	cp $(SRC_DIR)/docs/backend/snapdragon/CMakeUserPresets.json $(SRC_DIR)/
+	sed -i 's/"version": 5/"version": 4/' $(SRC_DIR)/CMakeUserPresets.json
+	# Create container and copy source (docker cp avoids Docker-in-Docker volume mount issue)
+	docker create --name qcom-build --platform linux/amd64 $(DOCKER_QCOM) \
+		/bin/bash -c ' \
+			set -euo pipefail; \
+			cd /workspace; \
+			cmake --preset arm64-linux-snapdragon-release -B build-qcom; \
+			cmake --build build-qcom -j $$(nproc); \
+			cmake --install build-qcom --prefix install-qcom \
+		'
+	docker cp $(SRC_DIR)/. qcom-build:/workspace/
+	docker start -a qcom-build
+	rm -rf $(INSTALL_QCOM)
+	docker cp qcom-build:/workspace/install-qcom/. $(INSTALL_QCOM)/
+	docker rm qcom-build
+	rm -rf $(PKG_QCOM)
+	mkdir -p $(PKG_QCOM)/usr
+	cp -a $(INSTALL_QCOM)/* $(PKG_QCOM)/usr/
diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..c55f9ba
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "src"]
+	path = src
+	url = https://github.com/ggml-org/llama.cpp.git
diff --git a/debian/changelog b/debian/changelog
index e1f3903..8b3cfc8 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,6 +1,6 @@
-llama.cpp (0.1.0-1) UNRELEASED; urgency=medium
+llama.cpp (0.0.9861-1) UNRELEASED; urgency=medium
 
-  * Add initial Debian packaging support
-
- -- "Radxa Computer Co., Ltd" <dev@radxa.com>  Thu, 01 Jan 1970 08:00:00 +0800
+  * Initial Debian packaging for Snapdragon Linux
+  * Based on upstream tag b9861
 
+ -- "Radxa Computer Co., Ltd" <dev@radxa.com>  Fri, 03 Jul 2026 08:00:00 +0800
diff --git a/debian/control b/debian/control
index 1deab94..80a6584 100644
--- a/debian/control
+++ b/debian/control
@@ -10,11 +10,12 @@ Build-Depends: debhelper-compat (= 13),
                dh-exec,
                pandoc,
 
-Package: llama.cpp
+Package: llama.cpp-qcom
 Architecture: all
 Section: admin
 Priority: optional
 Depends: ${misc:Depends},
-Description: llama.cpp
- This package provides the llama.cpp.
+         fastrpc,
+Description: llama.cpp for Qualcomm Snapdragon
+ llama.cpp with Hexagon DSP backend for Qualcomm Snapdragon devices.
 
diff --git a/debian/llama.cpp-qcom.install b/debian/llama.cpp-qcom.install
new file mode 100644
index 0000000..4cd0e16
--- /dev/null
+++ b/debian/llama.cpp-qcom.install
@@ -0,0 +1 @@
+llama.cpp-qcom/usr /
diff --git a/debian/llama.cpp-qcom.lintian-overrides b/debian/llama.cpp-qcom.lintian-overrides
new file mode 100644
index 0000000..0c10234
--- /dev/null
+++ b/debian/llama.cpp-qcom.lintian-overrides
@@ -0,0 +1,13 @@
+undeclared-elf-prerequisites
+pkg-config-unavailable-for-cross-compilation
+shared-library-lacks-version
+link-to-shared-library-in-wrong-package
+no-manual-page
+arch-independent-package-contains-binary-or-object
+lacks-ldconfig-trigger
+library-not-linked-against-libc
+no-shlibs
+shared-library-lacks-stack-section
+unstripped-binary-or-object
+package-name-doesnt-match-sonames
+missing-dependency-on-libc
diff --git a/pkg.conf.template b/pkg.conf.template
index 3e4edfe..4fda94b 100644
--- a/pkg.conf.template
+++ b/pkg.conf.template
@@ -1,24 +1,8 @@
 {
   "*": {
     "Releases": [
-      "buster",
-      "buster-test",
-      "bullseye",
-      "bullseye-test",
-      "bookworm",
-      "bookworm-test",
-      "trixie",
-      "trixie-test",
-      "sid",
-      "sid-test",
-      "focal",
-      "focal-test",
-      "jammy",
-      "jammy-test",
-      "noble",
-      "noble-test",
-      "resolute",
-      "resolute-test"
+      "qcs9075-noble",
+      "qcs9075-noble-test"
     ]
   }
 }
diff --git a/src b/src
new file mode 160000
index 0000000..c8ae9a7
--- /dev/null
+++ b/src
@@ -0,0 +1 @@
+Subproject commit c8ae9a750c6c89dc928503a16175b7b3c2d224e4