2024-12-12
usual disclaimer: no one is responsible for any damage/loss by using this
Also there is IRC channel #alpine-riscv64 on OFTC for discussion about development and help
there is ready made disk images here https://dev.alpinelinux.org/~mps/riscv64/spacemit-mmc.img.xz and tiny-cloud image https://dev.alpinelinux.org/~ncopa/riscv/alpine-bpi-f3-mmc.img.xz
download appropriate image, uncompress with
xz -d spacemit-mmc.img
and
dd if=spacemit-mmc.img of=/dev/sdX
where X is mmc device.
resizing root filesystem (example):
************************************
NOTE: this is not tested deeply, be careful
************************************
localhost:~# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS
mmcblk0 179:0 0 29.7G 0 disk
├─mmcblk0p1 179:1 0 124M 0 part /boot
└─mmcblk0p2 179:2 0 464M 0 part /
mmcblk2 179:8 0 7.3G 0 disk
└─mmcblk2p1 179:9 0 7.3G 0 part
mmcblk2boot0 179:16 0 4M 1 disk
mmcblk2boot1 179:24 0 4M 1 disk
and then
parted /dev/mmcblk0 resizepart 2 100%
partx -u /dev/mmcblk0
resize2fs /dev/mmcblk0p2
if the device is not mmcblk0 change it to appropriate one
reboot
script is created with big help of Alpine Linux developer Carlo
size of disk image should be adjusted according needs and parameters for sgdisk to create partitions of the needed sizes
prerequisite on alpine linux:
util-linux or util-linux-misc
e2fsprogs
qemu-riscv64
qemu-openrc
qemu-img
losetup
blkid
sgdisk
wget
tar
start this before running install script
/etc/init.d/qemu-binfmt start
or
rc-service qemu-binfmt start
for other linux distros apk-tool-static could be downloaded from https://dl-cdn.alpinelinux.org/alpine/edge/main/x86_64/ and unpacked with tar
when script finish use dd to write disk inage to mmc card and boot SBC
Script used to create spacemit disk img:
#!/bin/sh
# apk add qemu-img qemu-openrc losetup blkid parted e2fsprogs wget tar
set -eu
: "${DISK:=spacemit-mmc.img}"
: "${DISKSIZE:=600M}"
readonly SCRIPT="${0##*/}"
readonly TMPDIR="$(mktemp -dt "${SCRIPT%.*}".XXXXXX)"
readonly APK_KEY="alpine-devel@lists.alpinelinux.org-60ac2099.rsa.pub"
readonly MIRROR="https://dl-cdn.alpinelinux.org/alpine"
readonly LOOPDEV="$(losetup --find)"
readonly BOOTDEV="$LOOPDEV"p1
readonly ROOTDEV="$LOOPDEV"p2
cleanup() {
set +e
mountpoint -q "$TMPDIR"/boot && umount "$TMPDIR"/boot
mountpoint -q "$TMPDIR" && umount "$TMPDIR"
losetup --detach-all
rm -rf "$TMPDIR"
}
trap cleanup EXIT INT
rm -f $DISK
truncate -s $DISKSIZE $DISK
echo "Paritioning disk"
parted -s "$DISK" mktable msdos > /dev/null
parted -s "$DISK" unit s -- mkpart primary ext4 8192 128MiB > /dev/null
parted -s "$DISK" -- mkpart primary ext4 136MiB 100% > /dev/null
echo "Creating dirs and mounting"
losetup -P "$LOOPDEV" "$DISK"
mkfs.ext4 -qL mmc.bfs "$BOOTDEV"
mkfs.ext4 -qL mmc.rfs "$ROOTDEV"
mount -t ext4 "$ROOTDEV" "$TMPDIR"
mkdir -p "$TMPDIR"/boot
mkdir -p "$TMPDIR"/etc/apk/keys
mount -t ext4 "$BOOTDEV" "$TMPDIR"/boot
echo "Setup apk keys and repositories"
wget -qP "$TMPDIR"/etc/apk/keys https://alpinelinux.org/keys/"$APK_KEY"
printf "$MIRROR/edge/%s\n" main community testing > "$TMPDIR"/etc/apk/repositories
echo "installing base packages"
apk --allow-untrusted --root "$TMPDIR" --arch riscv64 --initdb add \
alpine-base alpine-baselayout alpine-conf kmod openrc \
dbus util-linux blkid chrony \
sysfsutils ssl_client ca-certificates-bundle alpine-keys \
ethtool f2fs-tools e2fsprogs e2fsprogs-extra libudev-zero libudev-zero-helper \
iw iwd installkernel linux-firmware-none parted \
agetty openresolv tar tzdata openssh wget mkinitfs \
linux-spacemit opensbi-spacemit u-boot-spacemit
echo "flashing boot loader"
dd if="$TMPDIR/"usr/share/u-boot-spacemit/bootinfo_emmc.bin of=${LOOPDEV} bs=512 conv=notrunc
dd if="$TMPDIR/"usr/share/u-boot-spacemit/FSBL.bin of=${LOOPDEV} bs=512 seek=1 conv=notrunc
dd if="$TMPDIR/"usr/share/u-boot-spacemit/FSBL.bin of=${LOOPDEV} bs=512 seek=512 conv=notrunc
dd if="$TMPDIR/"usr/share/opensbi-spacemit/fw_dynamic.itb of=${LOOPDEV} bs=512 seek=1280 conv=notrunc
dd if="$TMPDIR/"usr/share/u-boot-spacemit/u-boot.itb of=${LOOPDEV} bs=512 seek=2048 conv=notrunc
echo "Setting up services"
for rc in boot/bootmisc boot/hostname boot/modules boot/sysctl boot/urandom boot/networking \
sysinit/devfs sysinit/hwdrivers sysinit/mdev sysinit/modules \
shutdown/mount-ro shutdown/killprocs \
default/dbus default/chronyd default/local; do
ln -s /etc/init.d/"${rc##*/}" "$TMPDIR"/etc/runlevels/"$rc"
done
echo "setting basics for libudev-zero/mdev"
echo 'SUBSYSTEM=drm;.* root:video 660 */usr/libexec/libudev-zero-helper' >> $TMPDIR/etc/mdev.conf
echo 'SUBSYSTEM=input;.* root:input 660 */usr/libexec/libudev-zero-helper' >> $TMPDIR/etc/mdev.conf
echo "LABEL=mmc.bfs /boot ext4 auto" >> $TMPDIR/etc/fstab
echo "Settting boot loader"
bootuuid=$(blkid -s UUID -o value $BOOTDEV)
rootuuid=$(blkid -s UUID -o value $ROOTDEV)
mkdir -p "$TMPDIR"/boot/extlinux
cat <<EOF > "$TMPDIR"/boot/extlinux/extlinux.conf
menu title Alpine Spacemit
timeout 50
default bpi-f3
label lpi3a
menu label Alpine lpi3a
kernel /vmlinuz-spacemit
initrd /initramfs-spacemit
fdt /dtbs-spacemit/spacemit/k1-x_lpi3a.dtb
append earlycon=sbi rw root=UUID=$rootuuid rootfstype=ext4 rootwait console=ttyS0,115200 console=tty0 clk_ignore_unused swiotlb=65536
label bpi-f3
menu label Alpine bpi-f3
kernel /vmlinuz-spacemit
initrd /initramfs-spacemit
fdt /dtbs-spacemit/spacemit/k1-bananapi-f3.dtb
append earlycon=sbi rw root=UUID=$rootuuid rootfstype=ext4 rootwait console=ttyS0,115200 console=tty0 clk_ignore_unused swiotlb=65536
EOF
echo "Setting up inittab"
sed -i 's/^tty1.*/tty1::respawn:\/sbin\/agetty -L 115200 tty1 linux --login-pause --autologin root --noclear/' $TMPDIR/etc/inittab
sed -i 's/^#ttyS0/ttyS0/' $TMPDIR/etc/inittab
sed -i 's/^ttyS0.*/ttyS0::respawn:\/sbin\/agetty -L 115200 ttyS0 linux --login-pause --autologin root --noclear/' $TMPDIR/etc/inittab
echo "Finished, cleaning up"