Initial arm support

Not yet working, some parts also not yet cross compiled

Signed-off-by: Justin Cormack <justin.cormack@unikernel.com>

Dockerfile.armhf

@@ -0,0 +1,10 @@
+FROM alpine:3.3
+
+COPY alpine/initrd-arm.img .
+COPY alpine/kernel/zImage .
+
+RUN apk update && apk add qemu-system-arm
+
+RUN gzip -9 initrd-arm.img
+
+ENTRYPOINT [ "qemu-system-arm", "-cpu", "cortexa15", "-M", "cubieboard", "-no-reboot", "-serial", "stdio", "-kernel", "zImage", "-initrd", "initrd-arm.img.gz", "-m", "256", "-append", "console=ttyAMA0", "-vnc", "none" ]

Makefile

@@ -9,6 +9,12 @@ qemu: all
 	docker build -t mobyqemu:build .
 	docker run -it mobyqemu:build
 
+qemu-arm: Dockerfile.armhf
+	$(MAKE) -C alpine/kernel arm
+	$(MAKE) -C alpine arm
+	docker build -f Dockerfile.armhf -t mobyarmqemu:build .
+	docker run -it mobyarmqemu:build
+
 clean:
 	$(MAKE) -C alpine clean
 	$(MAKE) -C xhyve clean

alpine/.gitignore

@@ -1 +1,2 @@
-initrd.img
+*.img
+Dockerfile.armhf

alpine/Makefile

@@ -4,17 +4,27 @@ ETCFILES=etc/issue etc/motd etc/inittab etc/network/interfaces
 ETCFILES+=etc/hostname- etc/resolv.conf- etc/hosts-
 ETCFILES+=etc/securetty
 
-kernel/aufs-utils.tar:
-	$(MAKE) -C kernel aufs-utils.tar
-
-initrd.img: Dockerfile mkinitrd.sh repositories $(ETCFILES) kernel/aufs-utils.tar
+initrd.img: Dockerfile mkinitrd.sh repositories $(ETCFILES)
 	rm -f initrd.img
 	$(MAKE) -C packages
+	$(MAKE) -C kernel
 	docker build -t mobyinitrd:build .
 	docker run mobyinitrd:build /bin/mkinitrd.sh > $@
 
+arm:	initrd-arm.img
+
+Dockerfile.armhf: Dockerfile
+	cat Dockerfile | sed 's@FROM alpine@FROM justincormack/armhf-alpine@' | sed 's/syslinux//' > $@
+
+initrd-arm.img: Dockerfile.armhf
+	rm -f initrd-arm.img
+	$(MAKE) -C packages arm
+	$(MAKE) -C kernel arm
+	docker build -f Dockerfile.armhf -t mobyinitrdarm:build .
+	docker run mobyinitrdarm:build /bin/mkinitrd.sh > $@
+
 clean:
-	rm -f initrd.img
+	rm -f initrd.img initrd-arm.img Dockerfile.armhf
 	$(MAKE) -C packages clean
 	$(MAKE) -C kernel clean
 	docker images -q mobyinitrd:build | xargs docker rmi -f

alpine/kernel/.gitignore

@@ -1,2 +1,3 @@
 vmlinuz64
+zImage
 aufs-utils.tar

alpine/kernel/Makefile

@@ -1,12 +1,18 @@
-all:	vmlinuz64 aufs-utils.tar
+all:	vmlinuz64
 
 vmlinuz64: kernel_config Dockerfile
 	docker build -t mobykernel:build .
 	docker run mobykernel:build cat /linux/arch/x86_64/boot/bzImage > $@
+	docker run mobykernel:build cat /aufs-utils.tar > aufs-utils.tar
 
-aufs-utils.tar: vmlinuz64
-	docker run mobykernel:build cat /aufs-utils.tar > $@
+arm: zImage
+
+zImage: kernel_config.arm Dockerfile
+	docker build --build-arg ARCH=arm -t mobyarmkernel:build .
+	docker run mobyarmkernel:build cat /linux/arch/arm/boot/zImage > $@
+	docker run mobyarmkernel:build cat /aufs-utils.tar > aufs-utils.tar
 
 clean:
-	rm -f vmlinuz64 aufs-utils.tar
+	rm -f zImage vmlinuz64 aufs-utils.tar
 	docker images -q mobykernel:build | xargs docker rmi -f
+	docker images -q mobyarmkernel:build | xargs docker rmi -f

alpine/packages/9pudc/Makefile

@@ -1,7 +1,7 @@
 all: 9pudc
 
 9pudc: Dockerfile main.go
-	docker build --build-arg GOOS=$(GOOS) --build-arg GOARCH=$(GOARCH) -t 9pudc:build .
+	docker build --build-arg GOOS=$(OS) --build-arg GOARCH=$(ARCH) -t 9pudc:build .
 	docker run 9pudc:build cat /go/bin/9pudc > 9pudc
 	chmod 755 9pudc
 

alpine/packages/Makefile

@@ -4,6 +4,12 @@ all:
 	$(MAKE) -C mdnstool
 	$(MAKE) -C docker
 
+arm:
+	$(MAKE) -C 9pudc ARCH=arm
+	$(MAKE) -C 9pudfuse ARCH=arm
+	$(MAKE) -C mdnstool ARCH=arm
+	$(MAKE) -C docker ARCH=arm
+
 clean:
 	$(MAKE) -C 9pudc clean
 	$(MAKE) -C 9pudfuse clean

alpine/packages/docker/Makefile

@@ -1,11 +1,12 @@
 all: docker
 
 DOCKER_VERSION=1.9.1
-ARCH=x86_64
-OS=Linux
+ARCH?=x86_64
+OS?=Linux
 
 docker:
-	curl -L -o docker https://get.docker.com/builds/${OS}/${ARCH}/docker-${DOCKER_VERSION}
+	[ "${ARCH}" != "arm" ] && curl -L -o docker https://get.docker.com/builds/${OS}/${ARCH}/docker-${DOCKER_VERSION} || \
+		cp docker-arm docker
 	chmod +x docker
 
 clean:

alpine/packages/mdnstool/Dockerfile

@@ -5,6 +5,11 @@ RUN apk update && apk upgrade && apk add git
 RUN mkdir -p /go/src/mdnstool
 WORKDIR /go/src/mdnstool
 
+ARG GOARCH
+ARG GOOS
+
 COPY . /go/src/mdnstool/
-RUN go get
-RUN go install
+
+RUN go get && go install
+
+RUN [ -f /go/bin/*/mdnstool ] && mv /go/bin/*/mdnstool /go/bin/ || true

alpine/packages/mdnstool/Makefile

@@ -1,7 +1,7 @@
 all: mdnstool
 
 mdnstool: Dockerfile mdnstool.go mdnsmon/mdnsmon.go
-	docker build -t mdnstool:build .
+	docker build --build-arg GOOS=$(OS) --build-arg GOARCH=$(ARCH) -t mdnstool:build .
 	docker run mdnstool:build cat /go/bin/mdnstool > mdnstool
 	chmod 755 mdnstool