Merge pull request #8 from hypriot/prepare-odroid-partition-layout

Prepare odroid partition layout

.travis.yml

@@ -4,6 +4,7 @@ services:
 language: bash
 script:
   - make rpi-raw-image
+  - make odroid-raw-image
   - ls -lah
 branches:
   only:
@@ -17,6 +18,8 @@ deploy:
   file:
     - "rpi-raw.img.zip"
     - "rpi-raw.img.zip.sha256"
+    - "odroid-raw.img.zip"
+    - "odroid-raw.img.zip.sha256"
   on:
     tags: true
     repo: hypriot/image-builder-raw

Makefile

@@ -6,6 +6,9 @@ build:
 rpi-raw-image: build
 	docker run --rm --privileged -v $(shell pwd):/workspace image-builder-raw /workspace/builder/rpi/build.sh
 
+odroid-raw-image: build
+	docker run --rm --privileged -v $(shell pwd):/workspace image-builder-raw /workspace/builder/odroid/build.sh
+
 shell: build
 	docker run --rm -ti --privileged -v $(shell pwd):/workspace image-builder-raw bash
 

builder/odroid/build.sh

@@ -0,0 +1,69 @@
+#!/bin/bash
+set -ex
+# this script should be run only inside of a Docker container
+if [ ! -f /.dockerenv ]; then
+  echo "ERROR: script works only in a Docker container!"
+  exit 1
+fi
+
+### setting up some important variables to control the build process
+BUILD_RESULT_PATH="/workspace"
+IMAGE_PATH="odroid-raw.img"
+SD_CARD_SIZE=800
+BOOT_PARTITION_SIZE=64
+
+# create empty BOOT/ROOTFS image file
+# - SD_CARD_SIZE in MByte
+# - DD uses 256 Bytes
+# - sector block size is 512Bytes
+# - MBR size is 512 Bytes, so we start at sector 2048 (1MByte reserved space)
+BOOTFS_START=3072
+BOOTFS_SIZE=$((BOOT_PARTITION_SIZE * 2048))
+ROOTFS_START=$((BOOTFS_SIZE + BOOTFS_START))
+SD_MINUS_DD=$((SD_CARD_SIZE * 1024 * 1024 - 256))
+ROOTFS_SIZE=$((SD_MINUS_DD / 512 - ROOTFS_START))
+
+dd if=/dev/zero of=${IMAGE_PATH} bs=1MiB count=${SD_CARD_SIZE}
+
+DEVICE=$(losetup -f --show ${IMAGE_PATH})
+
+echo "Image ${IMAGE_PATH} created and mounted as ${DEVICE}."
+
+# create partions
+sfdisk --force "${DEVICE}" <<PARTITION
+unit: sectors
+
+/dev/loop0p1 : start= ${BOOTFS_START}, size= ${BOOTFS_SIZE}, Id= c
+/dev/loop0p2 : start= ${ROOTFS_START}, size= ${ROOTFS_SIZE}, Id=83
+/dev/loop0p3 : start= 0, size= 0, Id= 0
+/dev/loop0p4 : start= 0, size= 0, Id= 0
+PARTITION
+
+losetup -d "${DEVICE}"
+DEVICE=$(kpartx -va ${IMAGE_PATH} | sed -E 's/.*(loop[0-9])p.*/\1/g' | head -1)
+dmsetup --noudevsync mknodes
+BOOTP="/dev/mapper/${DEVICE}p1"
+ROOTP="/dev/mapper/${DEVICE}p2"
+DEVICE="/dev/${DEVICE}"
+
+# give some time to system to refresh
+sleep 3
+
+# create file systems
+mkfs.vfat "${BOOTP}" -n HypriotOS
+mkfs.ext4 "${ROOTP}" -L root -i 4096 # create 1 inode per 4kByte block (maximum ratio is 1 per 1kByte)
+
+echo "### remove dev mapper devices for image partitions"
+kpartx -vds ${IMAGE_PATH} || true
+
+# ensure that the travis-ci user can access the sd-card image file
+umask 0000
+
+# compress image
+zip "${BUILD_RESULT_PATH}/${IMAGE_PATH}.zip" "${IMAGE_PATH}"
+sleep 2
+cd ${BUILD_RESULT_PATH} && sha256sum "${IMAGE_PATH}.zip" > "${IMAGE_PATH}.zip.sha256" && cd -
+
+fdisk -l /odroid-raw.img
+# test raw image that we have built
+rspec --format documentation --color ${BUILD_RESULT_PATH}/builder/odroid/test

builder/odroid/test/image_spec.rb

@@ -0,0 +1,36 @@
+require 'serverspec'
+set :backend, :exec
+
+describe "Raw Image" do
+  let(:image_path) { return '/odroid-raw.img' }
+
+  it "exists" do
+    image_file = file(image_path)
+    expect(image_file).to exist
+  end
+
+  context "Partition table" do
+    let(:stdout) { command("fdisk -l #{image_path} | grep '^/odroid-raw'").stdout }
+
+    it "has 2 partitions" do
+      partitions = stdout.split(/\r?\n/)
+      expect(partitions.size).to be 2
+    end
+
+    it "has a boot-partition with a sda1 W95 FAT32 filesystem" do
+      expect(stdout).to contain('^.*\.img1 .*W95 FAT32 \(LBA\)$')
+    end
+
+    it "has a root-partition with a sda2 Linux filesystem" do
+      expect(stdout).to contain('^.*\.img2 .*Linux$')
+    end
+
+    it "partition sda1 starts at sector 3072" do
+      expect(stdout).to contain('^.*\.img1\ *3072 .*$')
+    end
+
+    it "partition sda1 has a size of 64M" do
+      expect(stdout).to contain('^.*\.img1.* 64M  c.*$')
+    end
+  end
+end