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gemini: Generate harddisk image for DNS-313

This makes OpenWrt build an Ext2+Ext4 partitioned image
for the D-Link DNS-313 with two blank partitions, a boot
partition on /dev/sda3 and a rootfs partition on
/dev/sda4.

This uses the methods already used in apm821xx including
the tricks to convert the generated Ext2 filesystem
partition to version 1 so that the firmware bootloader
will properly recognize it.

We patch a bit around the build files to make sure we
get the rootfs size set and that genext2fs is properly
built.

Tested on the D-Link DNS-313.

Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
[Fixing and tricksing]
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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linusw authored and chunkeey committed Feb 15, 2019
1 parent 6cdf08f commit c72b1d8468b027f6d42eacfd741e288f552bc27d
@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
ARCH:=arm
BOARD:=gemini
BOARDNAME:=Cortina Systems CS351x
FEATURES:=squashfs pci rtc usb dt gpio display
FEATURES:=squashfs pci rtc usb dt gpio display ext4 rootfs-part boot-part
CPU_TYPE:=fa526
MAINTAINER:=Roman Yeryomin <roman@advem.lv>

@@ -28,6 +28,7 @@ endef
# the only real content.
define Build/dns313-images
mkdir -p $@.tmp/.boot
chmod 755 $@.tmp/.boot

echo "dummy" > $@.tmp/dummyfile

@@ -38,9 +39,20 @@ define Build/dns313-images
dns313-header $(IMAGE_KERNEL) \
$@.tmp/.boot/zImage

tar --sort=name --owner=0 --group=0 --numeric-owner -czf $@ \
-C $@.tmp .boot \
$(if $(SOURCE_DATE_EPOCH),--mtime="@$(SOURCE_DATE_EPOCH)")
rm $@.tmp/dummyfile

genext2fs --block-size $(BLOCKSIZE:%k=%Ki) \
--size-in-blocks $$((1024 * $(CONFIG_TARGET_KERNEL_PARTSIZE))) \
--squash-uids \
--root $@.tmp $@.tmp-boot

# The device firmware needs revision 1 of EXT2
tune2fs -O filetype $@.tmp-boot
e2fsck -pDf $@.tmp-boot > /dev/null

./dns313_gen_hdd_img.sh $@ $@.tmp-boot $(IMAGE_ROOTFS) \
$(CONFIG_TARGET_KERNEL_PARTSIZE) \
$(CONFIG_TARGET_ROOTFS_PARTSIZE)

rm -rf $@.tmp
endef
@@ -106,7 +118,8 @@ GEMINI_NAS_PACKAGES:=kmod-md-mod kmod-md-linear kmod-md-multipath \
kmod-fs-btrfs kmod-fs-cifs kmod-fs-nfs \
kmod-fs-nfsd kmod-fs-ntfs kmod-fs-reiserfs kmod-fs-vfat \
kmod-nls-utf8 kmod-usb-storage-extras \
samba36-server mdadm cfdisk fdisk e2fsprogs badblocks
samba36-server mdadm cfdisk fdisk e2fsprogs badblocks \
partx-utils

define Device/dlink_dir-685
DEVICE_TITLE := D-Link DIR-685 Xtreme N Storage Router
@@ -123,8 +136,10 @@ define Device/dlink_dns-313
DEVICE_TITLE := D-Link DNS-313 1-Bay Network Storage Enclosure
DEVICE_DTS := gemini-dlink-dns-313
DEVICE_PACKAGES := $(GEMINI_NAS_PACKAGES)
IMAGES := bootpart.tar.gz
IMAGE/bootpart.tar.gz := dns313-images
BLOCKSIZE := 1k
FILESYSTEMS := ext4
IMAGES := factory.bin.gz
IMAGE/factory.bin.gz := dns313-images | gzip
endef
TARGET_DEVICES += dlink_dns-313

@@ -0,0 +1,28 @@
#!/usr/bin/env bash

set -x
[ $# -eq 5 ] || {
echo "SYNTAX: $0 <file> <bootfs image> <rootfs image> <bootfs size> <rootfs size>"
exit 1
}

OUTPUT="$1"
BOOTFS="$2"
ROOTFS="$3"
BOOTFSSIZE="$4"
ROOTFSSIZE="$5"

head=4
sect=63

# Create two empty partitions followed by the boot partition with
# the ./boot/zImage and then the rootfs partition.
set `ptgen -o $OUTPUT -h $head -s $sect -t 83 -n -p 0 -p 0 -p ${BOOTFSSIZE}M -p ${ROOTFSSIZE}M`

BOOTOFFSET="$(($1 / 512))"
BOOTSIZE="$(($2 / 512))"
ROOTFSOFFSET="$(($3 / 512))"
ROOTFSSIZE="$(($4 / 512))"

dd bs=512 if="$BOOTFS" of="$OUTPUT" seek="$BOOTOFFSET" conv=notrunc
dd bs=512 if="$ROOTFS" of="$OUTPUT" seek="$ROOTFSOFFSET" conv=notrunc
@@ -37,7 +37,7 @@ tools-y += lzma squashfs4 zip
tools-$(BUILD_B43_TOOLS) += b43-tools
tools-$(BUILD_ISL) += isl
tools-$(CONFIG_USE_SPARSE) += sparse
tools-$(CONFIG_TARGET_apm821xx) += genext2fs
tools-$(CONFIG_TARGET_apm821xx)$(CONFIG_TARGET_gemini) += genext2fs

# builddir dependencies
$(curdir)/bison/compile := $(curdir)/flex/compile

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