ci: Initial support for doorlock emulation in qemu arm

Signed-off-by: Ralf Ramsauer <ralf@binary-kitchen.de>

.gitignore

@@ -9,3 +9,5 @@ arch/BKCA.crt
 
 pydoorlock/Protocol.py
 pydoorlock/__pycache__/
+
+ci/download

ci/Makefile

@@ -0,0 +1,113 @@
+# pydoorlock, the python library for doorlock
+#
+# Author:
+#  Ralf Ramsauer <ralf@binary-kitchen.de>
+#
+# Copyright (c) Binary Kitchen, 2019
+#
+# This work is licensed under the terms of the GNU GPL, version 2.  See
+# the COPYING file in the top-level directory.
+#
+
+ARCHARM = ArchLinuxARM-armv7-latest.tar.gz
+#ARCHARM = ArchLinuxARM-rpi-2-latest.tar.gz
+
+DIR_DOWNLOAD = download
+OUT = out
+
+SSH_PUB_KEY ?= $(shell realpath ~/.ssh/id_ed25519.pub)
+
+ARCHARM_PKG = $(DIR_DOWNLOAD)/$(ARCHARM)
+
+VEXPRESS_DTB = vexpress-v2p-ca15-tc1.dtb
+QEMU_IMAGE = $(OUT)/qemu-vexpress.qcow2
+QEMU_KERNEL = $(OUT)/zImage
+QEMU_DTB = $(OUT)/$(VEXPRESS_DTB)
+
+SSH_PORT = 5555
+IMAGE_SIZE = 5G
+
+MNT_ROOTFS = /tmp/ROOTFS
+
+all: $(QEMU_KERNEL)
+
+qemu: extract_kernel
+	qemu-system-arm							\
+		-M vexpress-a15 -cpu cortex-a15 -smp 2			\
+		-m 1G							\
+		-kernel $(QEMU_KERNEL) -serial stdio			\
+		-dtb $(QEMU_DTB)					\
+		-sd $(QEMU_IMAGE)					\
+		-netdev user,id=net,hostfwd=tcp::$(SSH_PORT)-:22	\
+		-device virtio-net-device,netdev=net			\
+		-append "root=/dev/mmcblk0p2 rootwait rw audit=off"
+
+
+qemu_img: $(QEMU_IMAGE)
+
+extract_kernel: $(QEMU_IMAGE)
+	sudo modprobe nbd
+	sudo qemu-nbd -r --connect=/dev/nbd0 $(QEMU_IMAGE)
+	mkdir $(MNT_ROOTFS)
+	sudo mount /dev/nbd0p1 $(MNT_ROOTFS)
+
+	cp -av $(MNT_ROOTFS)/zImage $(QEMU_KERNEL)
+	cp -av $(MNT_ROOTFS)/dtbs/$(VEXPRESS_DTB) $(QEMU_DTB)
+
+	sudo umount $(MNT_ROOTFS)
+	rm -rf $(MNT_ROOTFS)
+	sudo qemu-nbd --disconnect /dev/nbd0
+
+image_deploy_key: $(QEMU_IMAGE)
+	sudo modprobe nbd
+	sudo qemu-nbd --connect=/dev/nbd0 $(QEMU_IMAGE)
+
+	sudo mkdir $(MNT_ROOTFS)
+	sudo mount /dev/nbd0p2 $(MNT_ROOTFS)
+
+	sudo mkdir -p $(MNT_ROOTFS)/root/.ssh
+	sudo cp $(SSH_PUB_KEY) $(MNT_ROOTFS)/root/.ssh/authorized_keys
+
+	sudo umount $(MNT_ROOTFS)
+	sudo rm -rf $(MNT_ROOTFS)
+	sudo qemu-nbd --disconnect /dev/nbd0
+
+$(QEMU_IMAGE): $(ARCHARM_PKG)
+	mkdir -p $(OUT)
+	qemu-img create -f qcow2 -o size=$(IMAGE_SIZE) $(QEMU_IMAGE)
+	sudo modprobe nbd
+	sudo qemu-nbd --connect=/dev/nbd0 $(QEMU_IMAGE)
+	#sudo sfdisk /dev/nbd0 < part_layout
+	sudo parted --script /dev/nbd0 		\
+		mklabel msdos			\
+		mkpart primary fat32 1M 128M	\
+		mkpart primary ext4 128M 100\%
+
+	sudo mkfs.vfat -F32 /dev/nbd0p1
+	sudo mkfs.ext4 -j -E lazy_itable_init=0,lazy_journal_init=0 /dev/nbd0p2
+	sync
+
+	sudo mkdir $(MNT_ROOTFS)
+	sudo mount /dev/nbd0p2 $(MNT_ROOTFS)
+	sudo mkdir $(MNT_ROOTFS)/boot
+	sudo mount /dev/nbd0p1 $(MNT_ROOTFS)/boot
+
+	sudo tar -xf $^ -C $(MNT_ROOTFS)
+
+	# Some adjustments. We need to modprobe drm-pl111 on boot.
+	echo pl111-drm | sudo tee $(MNT_ROOTFS)/etc/modules-load.d/drm-pl111.conf
+
+	sync
+	sudo umount $(MNT_ROOTFS)/boot
+	sudo umount $(MNT_ROOTFS)
+	sudo rm -rf $(MNT_ROOTFS)
+	sudo qemu-nbd --disconnect /dev/nbd0
+
+
+$(ARCHARM_PKG):
+	mkdir -p $(DIR_DOWNLOAD)
+	wget http://os.archlinuxarm.org/os/$(ARCHARM) -O $@
+
+clean:
+	rm -rf $(DIR_DOWNLOAD)
+	rm -rf $(OUT)