add blobby, hybrid linux kernel packages

kernel/makefile

@@ -9,8 +9,9 @@ include $(PRAWNOS_ROOT)/scripts/BuildScripts/BuildCommon.mk
 include $(PRAWNOS_ROOT)/initramfs/makefile
 
 ### TARGETED VARS ###
-KERNEL_PATCHED := $(PRAWNOS_KERNEL_BUILD)/.kernel_patched
-KERNEL_EXTRACTED := $(PRAWNOS_KERNEL_BUILD)/.kernel_extracted
+KERNEL_PATCHED := $(PRAWNOS_KERNEL_BUILD)/.kernel_$(KERNEL_TYPE)_patched
+KERNEL_EXTRACTED := $(PRAWNOS_KERNEL_BUILD)/.kernel_$(KERNEL_TYPE)_extracted
+KERNEL_CONFIG_GENERATED := $(PRAWNOS_KERNEL_BUILD)/.kernel_$(KERNEL_TYPE)_config_generated
 
 KERNEL_SHARED_RESOURCES := $(PRAWNOS_KERNEL)/resources/shared
 KERNEL_RESOURCES := $(PRAWNOS_KERNEL)/resources/$(TARGET)
@@ -26,19 +27,27 @@ KERNEL_LIBRE_TAR_SIGNATURE_BASENAME := $(KERNEL_LIBRE_BASENAME).sign
 KERNEL_LIBRE_TAR_SIGNATURE := $(PRAWNOS_BUILD_SOURCES)/$(KERNEL_LIBRE_TAR_SIGNATURE_BASENAME)
 KERNEL_LIBRE_TAR_SIGNATURE_TARGET_BASENAME := $(KERNEL_LIBRE_BASENAME)
 KERNEL_LIBRE_TAR_SIGNATURE_TARGET := $(PRAWNOS_BUILD_SOURCES)/$(KERNEL_LIBRE_TAR_SIGNATURE_TARGET_BASENAME)
+KERNEL_LIBRE_SOURCE_NAME := linux-$(KVER)-libre-$(TARGET)
 KERNEL_LIBRE_PUBKEY := $(KERNEL_SHARED_RESOURCES)/linux-libre-signing-key.gpg
 
+# hybrid kernel: Blobby wifi and bluetooth in an otherwise libre kernel
+# As ATH9k devices and 2.4GHZ wifi become less commonly available, and no new wifi adapters with fully open
+# source firmware and drivers have become available, its hard to stick to using blob-free wifi
+# Let users compromise by re-adding blobby wifi to their otherwise blob-free kernel
+KERNEL_HYBRID_CONFIG := $(PRAWNOS_BUILD)/hybrid-kernel-config
+KERNEL_HYBRID_CONFIG_FRAGMENT := $(KERNEL_RESOURCES)/hybrid-config.fragment
+KERNEL_HYBRID_SOURCE_NAME := linux-$(KVER)-hybrid-$(TARGET)
 
-# Default to a libre kernel. blobby_kernel target will override if needed:
-BLOBBY_BUILD := 0
+# Blobby kernel vars
 KERNEL_BLOBBY_CONFIG := $(KERNEL_RESOURCES)/blobby-config
-KERNEL_BLOBBY_URL := https://cdn.kernel.org/pub/linux/kernel/v5.x/
-KERNEL_BLOBBY_BASENAME := linux-$(KVER).tar.lz
+KERNEL_BLOBBY_URL := https://cdn.kernel.org/pub/linux/kernel/v6.x/
+KERNEL_BLOBBY_BASENAME := linux-$(KVER).tar.xz
 KERNEL_BLOBBY_TAR := $(PRAWNOS_BUILD_SOURCES)/$(KERNEL_BLOBBY_BASENAME)
 KERNEL_BLOBBY_TAR_SIGNATURE_TARGET_BASENAME := linux-$(KVER).tar
 KERNEL_BLOBBY_TAR_SIGNATURE_BASENAME := $(KERNEL_BLOBBY_TAR_SIGNATURE_TARGET_BASENAME).sign
 KERNEL_BLOBBY_TAR_SIGNATURE := $(PRAWNOS_BUILD_SOURCES)/$(KERNEL_BLOBBY_TAR_SIGNATURE_BASENAME)
 KERNEL_BLOBBY_TAR_SIGNATURE_TARGET := $(PRAWNOS_BUILD_SOURCES)/$(KERNEL_BLOBBY_TAR_SIGNATURE_TARGET_BASENAME)
+KERNEL_BLOBBY_SOURCE_NAME := linux-$(KVER)-blobby-$(TARGET)
 KERNEL_BLOBBY_PUBKEY := $(KERNEL_SHARED_RESOURCES)/blobby-linux-signing-key.gpg
 
 ATH9K_EXTRACTED := $(PRAWNOS_ATH9K_BUILD)/.ath9k_extracted
@@ -79,7 +88,7 @@ kernel_image_package_install: kernel_image_package
 
 
 .PHONY: kernel_config
-kernel_config: $(KERNEL_PATCHED)
+kernel_config: $(KERNEL_PATCHED) $(KERNEL_CONFIG_GENERATED)
 	$(PRAWNOS_KERNEL_SCRIPTS_MENUCONFIG) $(KERNEL_RESOURCES) $(PRAWNOS_KERNEL_BUILD) $(TARGET) $(KERNEL_CONFIG)
 
 ### CLEAN RULES
@@ -107,19 +116,14 @@ update_ath9k_tar:
 	cd tmp && tar czvf $(ATH9K_SOURCE) $(ATH9K)
 	rm -rf tmp/
 
-.PHONY: blobby_kernel
-blobby_kernel:
-	$(MAKE) BLOBBY_BUILD=1 kernel
-
-
 #TODO: package perf/linux-tools
 .PHONY: perf
 perf: $(PRAWNOS_KERNEL_BUILT)
 	$(PRAWNOS_KERNEL_SCRIPTS_PERF) $(KVER) $(KERNEL_RESOURCES) $(PRAWNOS_KERNEL_BUILD) $(PRAWNOS_INITRAMFS_IMAGE) $(TARGET)
 
 ### REAL RULES
 
-ifeq ($(BLOBBY_BUILD),0)
+ifeq ($(KERNEL_TYPE),$(PRAWNOS_LIBRE_KERNEL))
 KERNEL_CONFIG := $(KERNEL_LIBRE_CONFIG)
 KERNEL_URL := $(KERNEL_LIBRE_URL)
 KERNEL_BASENAME := $(KERNEL_LIBRE_BASENAME)
@@ -129,7 +133,19 @@ KERNEL_TAR_SIGNATURE_BASENAME := $(KERNEL_LIBRE_TAR_SIGNATURE_BASENAME)
 KERNEL_TAR_SIGNATURE_TARGET := $(KERNEL_LIBRE_TAR_SIGNATURE_TARGET)
 KERNEL_TAR_SIGNATURE_TARGET_BASENAME := $(KERNEL_LIBRE_TAR_SIGNATURE_TARGET_BASENAME)
 KERNEL_PUBKEY := $(KERNEL_LIBRE_PUBKEY)
-else
+
+else ifeq ($(KERNEL_TYPE),$(PRAWNOS_HYBRID_KERNEL))
+KERNEL_CONFIG := $(KERNEL_HYBRID_CONFIG)
+KERNEL_URL := $(KERNEL_LIBRE_URL)
+KERNEL_BASENAME := $(KERNEL_LIBRE_BASENAME)
+KERNEL_TAR := $(KERNEL_LIBRE_TAR)
+KERNEL_TAR_SIGNATURE := $(KERNEL_LIBRE_TAR_SIGNATURE)
+KERNEL_TAR_SIGNATURE_BASENAME := $(KERNEL_LIBRE_TAR_SIGNATURE_BASENAME)
+KERNEL_TAR_SIGNATURE_TARGET := $(KERNEL_LIBRE_TAR_SIGNATURE_TARGET)
+KERNEL_TAR_SIGNATURE_TARGET_BASENAME := $(KERNEL_LIBRE_TAR_SIGNATURE_TARGET_BASENAME)
+KERNEL_PUBKEY := $(KERNEL_LIBRE_PUBKEY)
+
+else ifeq ($(KERNEL_TYPE),$(PRAWNOS_BLOBBY_KERNEL))
 KERNEL_CONFIG := $(KERNEL_BLOBBY_CONFIG)
 KERNEL_URL := $(KERNEL_BLOBBY_URL)
 KERNEL_BASENAME := $(KERNEL_BLOBBY_BASENAME)
@@ -145,6 +161,9 @@ $(KERNEL_ATH9K_FIRMWARES):
 	mkdir -p $(KERNEL_ATH9K_FIRMWARES)
 
 $(KERNEL_TAR_SIGNATURE): | $(PRAWNOS_BUILD_SOURCES)
+  ifeq ($(KERNEL_TYPE),$(PRAWNOS_HYBRID_KERNEL))
+	wget $(WGET_OPTS) $(KERNEL_BLOBBY_URL)/$(KERNEL_BLOBBY_TAR_SIGNATURE_BASENAME) -O $(KERNEL_BLOBBY_TAR_SIGNATURE)
+  endif
 	wget $(WGET_OPTS) $(KERNEL_URL)/$(KERNEL_TAR_SIGNATURE_BASENAME) -O $(KERNEL_TAR_SIGNATURE)
 
 $(KERNEL_EXTRACTED): $(KERNEL_TAR) $(KERNEL_TAR_SIGNATURE)
@@ -156,34 +175,68 @@ $(KERNEL_EXTRACTED): $(KERNEL_TAR) $(KERNEL_TAR_SIGNATURE)
 	git clone https://github.com/SolidHal/rk3588-kernel-libre $(PRAWNOS_BUILD)/linux-$(KVER)
 	touch $(KERNEL_EXTRACTED)
   else
+## we use standard linux or linux-libre sources
+  ifeq ($(KERNEL_TYPE),$(PRAWNOS_LIBRE_KERNEL))
 	gpg --import $(KERNEL_PUBKEY)
-	case $(BLOBBY_BUILD) in \
-		0) \
-			gpg --verify $(KERNEL_TAR_SIGNATURE) $(KERNEL_TAR_SIGNATURE_TARGET) && \
-			tar --lzip -xf $(KERNEL_TAR) -C $(PRAWNOS_BUILD) && \
-			touch $(KERNEL_EXTRACTED) \
-			;; \
-		1) \
-			if [ ! -f $(KERNEL_TAR_SIGNATURE_TARGET) ]; then xz --decompress --keep $(KERNEL_TAR) ; fi ; \
-			gpg --verify $(KERNEL_TAR_SIGNATURE) $(KERNEL_TAR_SIGNATURE_TARGET) && \
-			tar -xf $(KERNEL_TAR_SIGNATURE_TARGET) -C $(PRAWNOS_BUILD) && \
-			touch $(KERNEL_EXTRACTED) \
-			;; \
-		*) \
-			@echo "Unknown kernel type"; \
-			exit 1 \
-			;; \
-	esac
+	gpg --verify $(KERNEL_TAR_SIGNATURE) $(KERNEL_TAR_SIGNATURE_TARGET) && \
+	tar --lzip -xf $(KERNEL_TAR) -C $(PRAWNOS_BUILD) && \
+	mv $(PRAWNOS_BUILD)/linux-$(KVER) $(PRAWNOS_KERNEL_BUILD) && \
+	touch $(KERNEL_EXTRACTED)
+
+  else ifeq ($(KERNEL_TYPE),$(PRAWNOS_HYBRID_KERNEL))
+	gpg --import $(KERNEL_LIBRE_PUBKEY)
+	gpg --import $(KERNEL_BLOBBY_PUBKEY)
+	rm -rf $(PRAWNOS_BUILD)/$(KERNEL_LIBRE_SOURCE_NAME)
+	rm -rf $(PRAWNOS_BUILD)/$(KERNEL_BLOBBY_SOURCE_NAME)
+	rm -rf $(PRAWNOS_BUILD)/$(KERNEL_HYBRID_SOURCE_NAME)
+	gpg --verify $(KERNEL_LIBRE_TAR_SIGNATURE) $(KERNEL_LIBRE_TAR_SIGNATURE_TARGET) && \
+	tar --lzip -xf $(KERNEL_LIBRE_TAR) -C $(PRAWNOS_BUILD) && \
+	mv $(PRAWNOS_BUILD)/linux-$(KVER) $(PRAWNOS_BUILD)/$(KERNEL_LIBRE_SOURCE_NAME) && \
+	if [ ! -f $(KERNEL_BLOBBY_TAR_SIGNATURE_TARGET) ]; then xz --decompress --keep $(KERNEL_BLOBBY_TAR) ; fi ; \
+	gpg --verify $(KERNEL_BLOBBY_TAR_SIGNATURE) $(KERNEL_BLOBBY_TAR_SIGNATURE_TARGET) && \
+	tar -xf $(KERNEL_BLOBBY_TAR_SIGNATURE_TARGET) -C $(PRAWNOS_BUILD) && \
+	mv $(PRAWNOS_BUILD)/linux-$(KVER) $(PRAWNOS_BUILD)/$(KERNEL_BLOBBY_SOURCE_NAME) && \
+	cp -a $(PRAWNOS_BUILD)/$(KERNEL_LIBRE_SOURCE_NAME) $(PRAWNOS_KERNEL_BUILD) && \
+	rm -rf $(PRAWNOS_KERNEL_BUILD)/drivers/net/wireless/marvell && \
+	cp -a $(PRAWNOS_BUILD)/$(KERNEL_BLOBBY_SOURCE_NAME)/drivers/net/wireless/marvell $(PRAWNOS_KERNEL_BUILD)/drivers/net/wireless/ && \
+	touch $(KERNEL_EXTRACTED)
+
+  else ifeq ($(KERNEL_TYPE),$(PRAWNOS_BLOBBY_KERNEL))
+	gpg --import $(KERNEL_BLOBBY_PUBKEY)
+	if [ ! -f $(KERNEL_TAR_SIGNATURE_TARGET) ]; then xz --decompress --keep $(KERNEL_TAR) ; fi ; \
+	gpg --verify $(KERNEL_TAR_SIGNATURE) $(KERNEL_TAR_SIGNATURE_TARGET) && \
+	tar -xf $(KERNEL_TAR_SIGNATURE_TARGET) -C $(PRAWNOS_BUILD) && \
+	mv $(PRAWNOS_BUILD)/linux-$(KVER) $(PRAWNOS_KERNEL_BUILD) && \
+	touch $(KERNEL_EXTRACTED)
+  else
+	@echo "Unknown kernel type:" $(KERNEL_TYPE)
+	exit 1
+  endif
   endif
 
 $(KERNEL_TAR): | $(PRAWNOS_BUILD_LOGS) $(PRAWNOS_BUILD_SOURCES)
+  ifeq ($(KERNEL_TYPE),$(PRAWNOS_HYBRID_KERNEL))
+	wget $(WGET_OPTS) $(KERNEL_BLOBBY_URL)/$(KERNEL_BLOBBY_BASENAME) -O $(KERNEL_BLOBBY_TAR)
+  endif
 	wget $(WGET_OPTS) $(KERNEL_URL)/$(KERNEL_BASENAME) -O $(KERNEL_TAR)
 
+
 $(KERNEL_PATCHED): $(KERNEL_EXTRACTED)
 	@echo $(PRAWNOS_KERNEL_BUILD)
 	$(PRAWNOS_KERNEL_SCRIPTS_PATCH) $(KVER) $(KERNEL_PATCHES) $(PRAWNOS_KERNEL_BUILD) $(TARGET)
 	touch $(KERNEL_PATCHED)
 
+$(KERNEL_CONFIG_GENERATED): $(KERNEL_EXTRACTED)
+  ifeq ($(KERNEL_TYPE),$(PRAWNOS_HYBRID_KERNEL))
+	@echo Generating hybrid kernel config from libre kernel config $(KERNEL_LIBRE_CONFIG)
+	rm -f $(KERNEL_HYBRID_CONFIG)
+	cp $(KERNEL_LIBRE_CONFIG) $(KERNEL_HYBRID_CONFIG)
+	$(PRAWNOS_KERNEL_SCRIPTS_GENERATE_CONFIG) $(KERNEL_RESOURCES) $(PRAWNOS_KERNEL_BUILD) $(TARGET) $(KERNEL_HYBRID_CONFIG) $(KERNEL_HYBRID_CONFIG_FRAGMENT)
+  else
+	@echo nothing to do for config for $(KERNEL_TYPE)
+  endif
+	touch $(KERNEL_CONFIG_GENERATED)
+
 $(ATH9K_EXTRACTED): | $(PRAWNOS_BUILD_LOGS) $(PRAWNOS_BUILD_SOURCES) $(PRAWNOS_BUILD_SHARED)
 	tar -xvf $(ATH9K_TAR) -C $(PRAWNOS_BUILD_SHARED)
 	touch $(ATH9K_EXTRACTED)
@@ -196,7 +249,7 @@ $(KERNEL_ATH9K_INSTALLED): $(KERNEL_PATCHED) $(ATH9K_BUILT) | $(KERNEL_ATH9K_FIR
 	cp $(ATH9K_9271_FW) $(KERNEL_ATH9K_FIRMWARES)/
 	cp $(ATH9K_7010_FW) $(KERNEL_ATH9K_FIRMWARES)/
 
-$(PRAWNOS_KERNEL_BUILT): $(KERNEL_ATH9K_INSTALLED) $(PRAWNOS_INITRAMFS_IMAGE)
+$(PRAWNOS_KERNEL_BUILT): $(KERNEL_ATH9K_INSTALLED) $(PRAWNOS_INITRAMFS_IMAGE) $(KERNEL_CONFIG_GENERATED)
 # rebuilding the kernel means we also need to rebuild the kernel package
 	$(MAKE) -C $(PRAWNOS_KERNEL_PACKAGE_IMAGE) clean
 	rm -rf $(KERNEL_BUILD_LOG)

kernel/packages/prawnos-linux-image-blobby-arm64/.gitignore

@@ -0,0 +1,27 @@
+#only include specific /debian files
+src/debian/*
+!src/debian/compat
+!src/debian/changelog
+!src/debian/control
+!src/debian/copyright
+!src/debian/rules
+!src/debian/install
+!src/debian/postinst
+!src/debian/source
+
+#generic packaging artifacts
+debhelper-build-stamp
+.debhelper
+*.deb
+*.dsc
+*.build
+*.buildinfo
+*.changes
+*.log
+*.substvars
+*.diff.gz
+*.upload
+*.orig.tar.gz
+
+#kernel image specific ignores
+prawnos-linux-image-blobby-arm64_*.debian.tar.xz

kernel/packages/prawnos-linux-image-blobby-arm64/makefile

@@ -0,0 +1,75 @@
+.DEFAULT_GOAL := default
+#import all shared make vars
+PRAWNOS_ROOT := $(shell git rev-parse --show-toplevel)
+include $(PRAWNOS_ROOT)/scripts/BuildScripts/BuildCommon.mk
+
+ifneq ($(TARGET),$(PRAWNOS_ARM64))
+$(error Cant build arm64 kernel package with non arm64 target)
+endif
+
+ifneq ($(KERNEL_TYPE),$(PRAWNOS_HYBRID_KERNEL))
+$(error Cant build arm64 hybrid kernel package with KERNEL_TYPE not set to hybrid-kernel)
+endif
+
+#package specific vars
+DEB_VERSION := $(PRAWNOS_KERNEL_IMAGE_CAT_DEB_VER)
+PRAWNOS_VERSION := $(PRAWNOS_KERNEL_IMAGE_CAT_PRAWNOS_VER)
+PACKAGE := prawnos-linux-image-blobby-arm64
+PACKAGE_ARCH := arm64
+
+#uses the full debian version for the package name
+PACKAGE_NAME :=  $(PACKAGE)_$(DEB_VERSION)_$(PACKAGE_ARCH)
+PACKAGE_NAME_DEB := $(PACKAGE_NAME).deb
+#uses only the upstream kernel version for the orig tar
+PACKAGE_NAME_ORIG := $(PACKAGE)_$(PRAWNOS_VERSION)
+PACKAGE_NAME_ORIG_TAR = $(PACKAGE_NAME_ORIG).orig.tar.gz
+PACKAGE_NAME_ORIG_DIR = $(PACKAGE)_$(KVER)-$(PRAWNOS_KERNEL_VER)-orig
+
+ORIG := $(PRAWNOS_BUILD)/$(PACKAGE_NAME_ORIG_DIR)
+
+default: $(PACKAGE_NAME_DEB)
+
+
+$(PACKAGE_NAME_DEB): $(PACKAGE_NAME_ORIG_TAR)
+	@echo Building $@
+	$(PRAWNOS_PACKAGE_SCRIPTS_UPDATE_DEB_FILES) $(PRAWNOS_KERNEL_PACKAGE_IMAGE)/src $(DEB_VERSION) $(PRAWNOS_VERSION) $(PRAWNOS_KERNEL_PACKAGE_IMAGE)
+	$(PRAWNOS_PACKAGE_SCRIPTS_PBUILD) $(PACKAGE_NAME_DEB) \
+                                            $(PBUILDER_VARS) \
+                                            $(PRAWNOS_LOCAL_APT_VARS) \
+                                            $(PACKAGE_LOCAL_BUILD_DEPS)
+
+$(PACKAGE_NAME_ORIG_TAR):
+	make -f $(PRAWNOS_KERNEL)/makefile kernel
+	rm -rf $(ORIG)
+	rm -f $(PACKAGE)_*-*.orig.tar.gz
+	mkdir $(ORIG)
+	cp $(PRAWNOS_KERNEL_BUILT) $(ORIG)/$(PACKAGE_NAME_ORIG)
+	cp $(PRAWNOS_KERNEL_RESOURCES_SHARED)/FlashKernelPartition.sh $(ORIG)/
+	tar -czf $(PACKAGE_NAME_ORIG_TAR) -C $(ORIG)/ .
+
+
+.PHONY: clean
+clean:
+	rm -rf *.upload
+	rm -rf *.deb
+	rm -rf *.changes
+	rm -rf *.dsc
+	rm -rf *.build
+	rm -rf *.diff.gz
+	rm -rf *.debian.tar.xz
+	rm -rf *.buildinfo
+	rm -f src/debian/debhelper-build-stamp
+	rm -rf src/debian/$(PACKAGE)*
+	rm -f src/debian/files
+	rm -rf src/debian/.debhelper
+	rm -f $(PACKAGE)_*-*.orig.tar.gz
+	rm -rf $(ORIG)
+
+.PHONY: install
+install:
+	$(PRAWNOS_PACKAGE_SCRIPTS_INSTALL) $(PACKAGE_NAME_DEB) $(INSTALL_TARGET)
+	$(PRAWNOS_IMAGE_SCRIPTS_INSTALL_KERNEL) $(KVER) $(PRAWNOS_IMAGE) $(TARGET) $(PRAWNOS_KERNEL_BUILD) $(PRAWNOS_BUILD) $(PACKAGE) $(PACKAGE_NAME_DEB)
+
+.PHONY: upload
+upload:
+	$(PRAWNOS_PACKAGE_SCRIPTS_UPLOAD) $(PACKAGE_NAME).changes

kernel/packages/prawnos-linux-image-blobby-arm64/src/debian/changelog

@@ -0,0 +1,5 @@
+prawnos-linux-image-blobby-arm64 (6.6.60-1-1) testing; urgency=medium
+
+  * release 6.6.60-1-1
+
+ -- Eva Emmerich <eva@evaemmerich.com>  Mon, 11 Nov 2024 12:39:22 -0800

kernel/packages/prawnos-linux-image-blobby-arm64/src/debian/control

@@ -0,0 +1,13 @@
+Source: prawnos-linux-image-blobby-arm64
+Section: kernel
+Priority: optional
+Maintainer: Eva Emmerich <eva@evaemmerich.com>
+Build-Depends: debhelper (>= 10)
+Standards-Version: 4.5.0
+
+
+Package: prawnos-linux-image-blobby-arm64
+Architecture: arm64
+Depends: ${misc:Depends} coreutils
+Conflicts: prawnos-linux-image-libre-arm64, prawnos-linux-image-blobby-arm64
+Description: the PrawnOS linux kernel distribution. Made up of normal aka blobby linux, PrawnOS initramfs, and varying numbers of patches

kernel/packages/prawnos-linux-image-blobby-arm64/src/debian/install

@@ -0,0 +1,2 @@
+prawnos-linux-image-blobby-arm64* boot
+FlashKernelPartition.sh etc/prawnos/kernel

kernel/packages/prawnos-linux-image-blobby-arm64/src/debian/postinst

@@ -0,0 +1,22 @@
+#!/bin/bash
+
+
+# the kernel file version doesn't include the debian package version, so we have to do some sed magic to drop it
+DEBVERSION=$(dpkg-query --show --showformat='${Version}' prawnos-linux-image-arm64)
+VERSION=$(sed 's/\(.*\)-.*/\1/' <<< ${DEBVERSION})
+
+KERNEL_IMAGE="/boot/prawnos-linux-image-blobby-arm64_${VERSION}"
+
+set -e
+
+case "$1" in
+    configure)
+        /etc/prawnos/kernel/FlashKernelPartition.sh $KERNEL_IMAGE
+        ;;
+    abort-upgrade|abort-remove|abort-deconfigure)
+        # Do nothing
+        ;;
+    *)
+        echo "Unrecognized postinst argument '$1'"
+        ;;
+esac