Currently it's not possible to boot the device with just initramfs image
without additional effort as the initramfs image doesn't contain device
tree. Fix it by producing FIT based image which could be booted with
following commands:
setenv bootargs earlyprintk console=ttyS0,115200
tftpboot ${kernel_addr_r} openwrt-mvebu-cortexa9-cznic_turris-omnia-initramfs-kernel.bin
bootm ${kernel_addr_r}
Acked-by: Klaus Kudielka <klaus.kudielka@gmail.com>
Reviewed-by: Tomasz Maciej Nowak <tmn505@gmail.com>
Signed-off-by: Petr Štetiar <ynezz@true.cz>
The majority of our targets provide a default value for the variable
SUPPORTED_DEVICES, which is used in images to check against the
compatible on a running device:
SUPPORTED_DEVICES := $(subst _,$(comma),$(1))
At the moment, this is implemented in the Device/Default block of
the individual targets or even subtargets. However, since we
standardized device names and compatible in the recent past, almost
all targets are following the same scheme now:
device/image name: vendor_model
compatible: vendor,model
The equal redundant definitions are a symptom of this process.
Consequently, this patch moves the definition to image.mk making it
a global default. For the few targets not using the scheme above,
SUPPORTED_DEVICES will be defined to a different value in
Device/Default anyway, overwriting the default. In other words:
This change is supposed to be cosmetic.
This can be used as a global measure to get the current compatible
with: $(firstword $(SUPPORTED_DEVICES))
(Though this is not precisely an achievement of this commit.)
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
The following four led triggers are enabled in generic config.
* kmod-ledtrig-default-on
* kmod-ledtrig-heartbeat
* kmod-ledtrig-netdev
* kmod-ledtrig-timer
Drop the packages and remove them from DEVICE_PACKAGES.
There's no other package depending on them in this repo.
Signed-off-by: Sungbo Eo <mans0n@gorani.run>
This adds DTB to kernel and that way makes it possible to easily boot
initramfs image and also kernel.
The sequence to boot initramfs on Omnia is then just:
env set bootargs earlyprintk console=ttyS0,115200
dhcp 0x1000000 192.168.1.1:openwrt-mvebu-cortexa9-cznic_turris-omnia-initramfs-kernel.bin
bootz 0x1000000
Without this change kernel boot won't proceed and is stuck on "Starting
kernel".
Signed-off-by: Karel Kočí <karel.koci@nic.cz>
[fixed From: to match with SoB:]
Signed-off-by: Petr Štetiar <ynezz@true.cz>
In contrast to the U-Boot version shipped with older versions of Turris
Omnia (CZ11NIC13, CZ11NIC20), the version shipped with Turris Omnia 2019
(CZ11NIC23) relies on the existence of /boot.scr.
Consequently, add a suitable boot script to the sysupgrade image.
Flash instructions for Turris Omnia 2019:
- Download openwrt-...-sysupgrade.img.gz, gunzip it, and copy the resulting
.img file to the root of a USB flash drive (FAT32 or ext2/3/4).
- Enter a rescue shell: Either via 5-LED reset and ssh root@192.168.1.1
on LAN port 4, or via 7-LED reset and the serial console.
- Insert the USB drive and mount it:
mkdir /mnt; mount /dev/sda1 /mnt
- Flash the OpenWrt image to eMMC:
dd if=/mnt/openwrt-...-sysupgrade.img of=/dev/mmcblk0 bs=4096 conv=fsync
- Reboot.
Flash instructions using a temporary "medkit" installation were written for
the older versions of Turris Omnia, and will *not* work on the Turris Omnia
2019.
Signed-off-by: Klaus Kudielka <klaus.kudielka@gmail.com>
Reviewed-by: Tomasz Maciej Nowak <tomek_n@o2.pl>
Tested-by: W. Michael Petullo <mike@flyn.org> (Turris Omnia "2020")
This patch adds support for Globalscale ESPRESSObin-Ultra. Device uses
the same Armada-3720 SoC with extended hardware support.
- SoC: Armada-3720
- RAM: 1 GB DDR4
- Flash: 4MB SPI NOR (mx25u3235f) + 8 GB eMMC
- Ethernet: Topaz 6341 88e6341 (4x GB LAN + 1x WAN with 30W PoE)
- WiFI: 2x2 802.11ac Wi-Fi marvell (88w8997 PCIe+USB)
- 1x USB 2.0 port
- 1x USB 3.0 port
- 1x microSD slot
- 1x mini-PCIe slot (USB [with nano-sim slot])
- 1x mini-USB debug UART
- 1x RTC Clock and battery
- 1x reset button
- 1x power button
- 4x LED (RGBY)
- Optional 1x M.2 2280 slot
** Installation **
Copy dtb from build_dir to bin/ and run tftpserver there:
$ cp ./build_dir/target-aarch64_cortex-a53_musl/linux-mvebu_cortexa53/
linux-5.4.65/arch/arm64/boot/dts/marvell/armada-3720-espressobin-ultra.dtb
bin/targets/mvebu/cortexa53/
$ in.tftpd -L -s bin/targets/mvebu/cortexa53/
Connect to the device UART via microUSB port on the back side and power on the device.
Power on the device and hit any key to stop the autoboot.
Set serverip (host IP) and ipaddr (any free IP address on the same subnet), e.g:
$ setenv serverip 192.168.1.10 # Host
$ setenv ipaddr 192.168.1.15 # Device
Ping server to confirm network is working:
$ ping $serverip
Using neta@30000 device
host 192.168.1.15 is alive
Tftpboot the firmware:
$ tftpboot $kernel_addr_r openwrt-mvebu-cortexa53-globalscale_espressobin-ultra-initramfs-kernel.bin
$ tftpboot $fdt_addr_r armada-3720-espressobin-ultra.dtb
Set the console and boot the image:
$ setenv bootargs $console
$ booti $kernel_addr_r - $fdt_addr_r
Once the initramfs is booted, transfer openwrt-mvebu-cortexa53-globalscale_espressobin-ultra-squashfs-sdcard.img.gz
to /tmp dir on the device.
Gunzip and dd the image:
$ gunzip /tmp/openwrt-mvebu-cortexa53-globalscale_espressobin-ultra-squashfs-sdcard.img.gz
$ dd if=/tmp/openwrt-mvebu-cortexa53-globalscale_espressobin-ultra-squashfs-sdcard.img of=/dev/mmcblk0 && sync
Reboot the device.
Signed-off-by: Vladimir Vid <vladimir.vid@sartura.hr>
The generic bootscript is tailored around a downstream firmware and
doesn't work on a firmware built from mainline components.
Add a bootscript which:
* sets $console since mainline u-boot doesn't do that
* uses distro boot variables, so OpenWRT can be booted off any supported
device when using a mainline firmware
* sets missing distro boot variables for the downstream firmware
Booting with a downstream firmware is unchanged.
Booting with a mainline firmware now works.
Signed-off-by: Andre Heider <a.heider@gmail.com>
fdt_addr and kernel_addr variables are getting obsolete in the mainline
u-boot in favor of fdt_addr_r and kernel_addr_r.
By checking if the new variables exist, we can make sure that devices with newer
version of u-boot will work while not breaking support for the existing ones.
Signed-off-by: Vladimir Vid <vladimir.vid@sartura.hr>
Acked-by: Tomasz Maciej Nowak <tomek_n@o2.pl>
This reverts commit e81e625ca3.
This was meant just for early DSA-adopters. Those should have
updated by now, remove it so future updaters get the intended
experience.
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Compile the Linkstation poweroff module for the Buffalo LS421DE.
Without this driver the device remains forever halted if a power off
command is executed.
The driver will also allow to use the WoL feature, which wasn't availabe
in the stock firmware.
Signed-off-by: Daniel González Cabanelas <dgcbueu@gmail.com>
In order to support SAE/WPA3-Personal in default images. Replace almost
all occurencies of wpad-basic and wpad-mini with wpad-basic-wolfssl for
consistency. Keep out ar71xx from the list as it won't be in the next
release and would only make backports harder.
Build-tested (build-bot settings):
ath79: generic, ramips: mt7620/mt76x8/rt305x, lantiq: xrx200/xway,
sunxi: a53
Signed-off-by: Petr Štetiar <ynezz@true.cz>
[rebase, extend commit message]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Add a specific comment for early DSA-adopters that they can keep
their config when prompted due to compat-version increase.
This is a temporary solution, the patch should be simply reverted
before any release.
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
When changing the Pro variant to DSA, the ethernet interface rename
script was dropped by all devices to keep them in sync:
be309bfd74 ("mvebu: drop 06_set_iface_mac preinit script")
Therefore, network config will be broken after upgrade for the
Base variant as well. Increase the compat version and provide a
message to signal that to the users.
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
This implements the newly introduced compat-version to prevent
upgrade between swconfig and DSA for mvebu.
Just define a compat version with minor increment and an appropriate
message for both image (in Makefile) and device (in base-files).
Having taken care of sysupgrade, we can put back the SUPPORTED_DEVICES
that have been removed in previous patches to prevent broken config.
Attention:
All users that already updated to the DSA versions in master will
receive the same incompatibility warning since their devices are still
"1.0" as far as fwtool can tell.
Those, and only those, can bypass the upgrade check by using force (-F)
without having to reset config again. In addition, the new version
string needs to be put into uci config manually, so the new fwtool
knows that it actually deals with a "1.1":
uci set "system.@system[-1].compat_version=1.1"
uci commit system
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Use "DEFAULT := n" to only disable devices for buildbots, but
keep them available for manual build.
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
The kernel appears to have grown too large, breaking the build for the
entire target.
Disable the affected images for now until the situation is dealt with.
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
The Helios 4 is a NAS from Kobol
that is powered by an Armada 38x
MicroSOM from Solidrun, similarly
to Clearfog.
This device has:
-Armada 38x CPU
(dual core ARMv7 1.6 Ghz)
-2 GB of ECC RAM
-Gigabit ethernet (Marvell)
-2x USB 3.0 ports
-4x Sata 3.0 ports
-i2c header (J9 |>GND|SDA|SCL|VCC)
-2x 3-pin fan headers with PWM
-micro-usb port is a TTL/UART to
USB converter connected to TTL
-MicroSD card slot
-System, 4xSata and 1xUSB LEDs
NOT WORKING: fan control
Fan Control requires a kernel patch
that is available in the Armbian
project (the "default firmware"
of this device) and named
mvebu-gpio-remove-hardcoded
-timer-assignment
This patch isn't acceptable
by OpenWrt, it should be upstreamed.
I also have that patch in my own
local OpenWrt builds,
in case you want a more
clean and less confusing patch
for upstreaming.
To install, write the disk image
on a micro SD card with dd or
win32 disk imager, insert the
card in the slot.
Check that the dip switch battery
for boot selection is as follows
Switch 1 and 2 down/off, switches
3, 4, 5 up/on.
Signed-off-by: Alberto Bursi <bobafetthotmail@gmail.com>
Add support for Marvell MACCHIATObin Single Shot, cortex-a72 based
Marvell ARMADA 8040 Community board. Single Shot was broken as the
device tree is different on the Double Shot Board.
Specifications:
- Quad core Cortex-A72 (up to 2GHz)
- DDR4 DIMM slot with optional ECC and single/dual chip select support
- Dual 10GbE (1/2.5/10GbE) SFP+
2.5GbE (1/2.5GbE) via SFP
1GbE via copper
- SPI Flash
- 3 X SATA 3.0 connectors
- MicroSD connector
- eMMC
- PCI x4 3.0 slot
- USB 2.0 Headers (Internal)
- USB 3.0 connector
- Console port (UART) over microUSB connector
- 20-pin Connector for CPU JTAG debugger
- 2 X UART Headers
- 12V input via DC Jack
- ATX type power connector
- Form Factor: Mini-ITX (170 mm x 170 mm)
More details at http://macchiatobin.net
Installation:
Write the Image to your Micro SD Card and insert it in the
MACCHIATObin Single Shot SD Card Slot.
In the U-Boot Environment:
1. reset U-Boot environment:
env default -a
saveenv
2. prepare U-Boot with boot script:
setenv bootcmd "load mmc 1:1 0x4d00000 boot.scr; source 0x4d00000"
saveenv
or manually (hanging lines indicate wrapped one-line command):
setenv fdt_name armada-8040-mcbin-singleshot.dtb
setenv image_name Image
setenv bootcmd 'mmc dev 1; ext4load mmc 1:1 $kernel_addr
$image_name;ext4load mmc 1:1 $fdt_addr $fdt_name;setenv
bootargs $console root=/dev/mmcblk1p2 rw rootwait; booti
$kernel_addr - $fdt_addr'
saveenv
On newer Bootloaders (18.12) the Variables have been changed, use:
setenv fdt_name armada-8040-mcbin-singleshot.dtb
setenv image_name Image
setenv bootcmd 'mmc dev 1; ext4load mmc 1:1 $kernel_addr_r
$image_name;ext4load mmc 1:1 $fdt_addr_r $fdt_name;setenv
bootargs $console root=/dev/mmcblk1p2 rw rootwait; booti
$kernel_addr_r - $fdt_addr_r'
Reported-by: Alexandra Alth <alexandra@alth.de>
Signed-off-by: Tomasz Maciej Nowak <tomek_n@o2.pl>
Tested-by: Alexandra Alth <alexandra@alth.de>
[add specs and installation as provided by Alexandra Alth]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Between kernels 4.20 and 5.0, a new variant of this board has been
introduced ("Single Shot"), and the existing one has been renamed
with the appendix "Double Shot". [1]
This also adjusted the first compatible in the list:
marvell,armada8040-mcbin -> marvell,armada8040-mcbin-doubleshot
This patch updates the OpenWrt implementation of this device by
adjusting the relevant references to that compatible (i.e., our
board name).
To still provide support for 4.19 with our setup, this adds a
small patch to change the compatible there as well.
[1] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=b1f0bbe2700051886b954192b6c1751233fe0f52
Cc: Tomasz Maciej Nowak <tomek_n@o2.pl>
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Reviewed-by: Tomasz Maciej Nowak <tomek_n@o2.pl>
The Buffalo Linkstation LS421DE has a chassis fan for cooling two internal
hard drives. Currently there is no control over this fan, running always
at fixed medium speed.
With the recent jump to the kernel 5.4, now we can monitor the hard drive
temperature and control the fan with thermal zones.
Install the kmod-hwmon-drivetemp module and wire up a thermal zone on the
dts file to allow automatic fan control by the kernel.
Tested succesfully using a single Crucial BX500 SSD drive.
Signed-off-by: Daniel González Cabanelas <dgcbueu@gmail.com>
The Device/Default definition in mvebu defines an IMAGE/factory.img
which is not included in IMAGES, and only used twice in the
individual definitions. Move it out of the default definition
to keep it closer to the reassignment of IMAGES and make it more
consistent with respect to other values of IMAGE/factory.img
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Many target use a repetitive if-include scheme for their subtarget
image files, though their names are consistent with the subtarget
names.
This patch removes these redundant conditions and just uses the
variable for the include where the target setup allows it.
For sunxi, this includes a trivial rename of the subtarget image
Makefiles.
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
A direct upgrade from previous swconfig version with
incompatible settings to DSA will break the internet.
Remove SUPPORTED_DEVICES so users cannot upgrade directly.
Signed-off-by: DENG Qingfang <dengqf6@mail2.sysu.edu.cn>
[rebase after Linksys rename, adjust title]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
The Linksys devices in mvebu target feature a mixed naming,
where parts are based on the official product name (device
node, image; e.g. WRT3200ACM) and parts are based on the
internal code name (DTS file name, compatible, LED labels;
e.g. rango). This inconsistent naming has been perceived
as quite confusing.
A recent attempt by Paul Spooren to harmonize this naming
in kernel has been declined there. However, for us it still
makes sense to apply at least a part of these changes
locally.
Primarily, this patch changes the compatible in DTS and thus
the board name used in various scripts to have them in line
with the device, model and image names. Due to the recent
switch from swconfig to DSA, this allows us to drop
SUPPORTED_DEVICES and thus prevent seamless upgrade between
these incompatible setups.
However, this does not include the LED label rename from
Paul's initial patch: I don't think it's worth keeping the
enormous diff locally for this case, as we can implement
this much easier in 01_leds if we have to live with the
inconsistency anyway.
Signed-off-by: Paul Spooren <mail@aparcar.org>
[rebase, extend to all devices, drop DT LED changes]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
This fixes a bunch of cosmetic issues with GL.iNet GL-MV1000:
- apply alphabetic sorting in multiple files
- use armada-3720 prefix for DTS like for other devices
- fix vendor capitalization for model in DTSes
- remove trivial comment in DTS files
- use DEVICE_VENDOR/DEVICE_MODEL
- remove redundant SUPPORTED_DEVICES
- use SOC instead of DEVICE_DTS
- remove empty line at EOF
Fixes: 050c24f05c ("mvebu: add support for GL.iNet GL-MV1000")
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Buffalo LinkStation LS421DE is a dual bay NAS, based on Marvell Armada 370
Hardware:
SoC: Marvell Armada 88F6707-A1
CPU: Cortex-A9 1200 MHz, 1 core
Flash: SPI-NOR 1 MiB, NAND 512 MiB
RAM: DDR3 512 MiB
Ethernet: 1x 10/100/1000 Mbps
USB: 1x 2.0, 1x 3.0
SATA: 2x 3.0 Gbps
LEDs/Input : 5x / 2x (1x button, 1x slide-switch)
RTC: Ricoh RS5C372A, I2C, no battery
Flash instruction (UART+TFTP):
1. Downgrade the OEM firmware to 1.34 version (BUFFALO_BOOTVER=0.13)
2. Remove any hard drive from inside the bays.
3. Boot the Openwrt initramfs image using the U-Boot serial console:
tftpboot 0x1200000 buffalo_ls421de-initramfs-kernel.bin
bootm 0x1200000
4. Flash the sysupgrade image using the Openwrt console:
sysupgrade -n buffalo_ls421de-squashfs-sysupgrade.bin
5. Wait until it finish, the device will reboot with Openwrt installed
on the NAND flash.
Note:
- Device shuting down doesn't work, even if the power slide switch is
used. We must first, via MDIO, set the unused LED2 at the ethernet
phy0 to off state. Reboot works ok.
Signed-off-by: Daniel González Cabanelas <dgcbueu@gmail.com>
Reviewed-by: Tomasz Maciej Nowak <tomek_n@o2.pl>
Place DEVICE_VARS assignments at the top of the file or above Device/Default
to make them easier to find.
For ramips, remove redundant values already present in parent file.
Signed-off-by: Sungbo Eo <mans0n@gorani.run>
[do not touch ar71xx, extend commit message]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Currently kmod-i2c-mux-* will not get into images unless kmod-i2c-mux is added
to DEVICE_PACKAGES as well. By changing the dependencies from "depends on" to
"select", we do not have the issue anymore.
Furthermore, we can remove most occurrences of the package from DEVICE_PACKAGES
and similar variables, as it is now pulled by dependent modules such as:
- kmod-i2c-mux-pca954x
Signed-off-by: Sungbo Eo <mans0n@gorani.run>
Currently kmod-i2c-* will not get into images unless kmod-i2c-core is added to
DEVICE_PACKAGES as well. By changing the dependencies from "depends on" to
"select", we do not have the issue anymore.
Furthermore, we can remove most occurrences of the package from DEVICE_PACKAGES
and similar variables, as it is now pulled by dependent modules such as:
- kmod-hwmon-lm75
- kmod-i2c-gpio
- kmod-i2c-gpio-custom
- kmod-i2c-mux
- kmod-i2c-ralink
Signed-off-by: Sungbo Eo <mans0n@gorani.run>
[do not touch ar71xx]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
If device recipe has specified DEVICE_DTS variable, the dtb is built
anyway by OpenWrt buildroot image rules. Drop the patch and adjust the
location of compiled dtb.
Cc: Scott Roberts <ttocsr@gmail.com>
Signed-off-by: Tomasz Maciej Nowak <tomek_n@o2.pl>
Tar has ability to change current dir, so use that instead additional
command invocation. Also being here, change tar arguments to make final
archive reproducible.
Cc: Scott Roberts <ttocsr@gmail.com>
Signed-off-by: Tomasz Maciej Nowak <tomek_n@o2.pl>
This device receipe selects bunch of packages which some are re-defined,
unnecessary or irrelevant. Clean them up, so only basic functionality
persist.
Cc: Scott Roberts <ttocsr@gmail.com>
Signed-off-by: Tomasz Maciej Nowak <tomek_n@o2.pl>
Don't rewrite global DTS_DIR, instead, use proper variable for
specifying devices dts directory. For consistency, also specify the
variable in default profile, as suggested by Adrian Schmutzler.
Signed-off-by: Tomasz Maciej Nowak <tomek_n@o2.pl>
Align subtargets makefiles names to actual subtargets.
Signed-off-by: Tomasz Maciej Nowak <tomek_n@o2.pl>
Acked-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
This sorts the devices in image Makefiles alphabetically.
Signed-off-by: Tomasz Maciej Nowak <tomek_n@o2.pl>
[fixed sorting in one case, add commit message]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
This introduces the SOC variable to mvebu target to derive some of
the DEVICE_DTS variables based on the SOC prefix and the device
definition name.
Since DTS names and compatible are inconsistent also in the kernel
for this target, the scheme cannot be applied to all devices, though.
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Acked-by: Tomasz Maciej Nowak <tomek_n@o2.pl>
This moves the if conditions for choosing which image Makefiles
are used to the parent image/Makefile. It seems more convenient
to have "codeflow" in the parent while the subtarget-specific
files only contain the definitions.
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Acked-by: Tomasz Maciej Nowak <tomek_n@o2.pl>
There is nothing that needs bash anymore.
Signed-off-by: Rosen Penev <rosenp@gmail.com>
[add prefix to commit title]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Enables proper checking. Matches printf behavior in C.
Found with shellcheck.
Signed-off-by: Rosen Penev <rosenp@gmail.com>
[add prefix to commit title]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
let is a bashism.
Found with shellcheck.
Signed-off-by: Rosen Penev <rosenp@gmail.com>
[add prefix to commit title]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
These targets are currently using more or less same SIGNATURE variable
which provides unique partition ID/signature, so it makes sense to
refactor it out into common IMG_PART_SIGNATURE variable which could be
reused by all targets.
This is another step in the direction of reproducible OpenWrt images.
Signed-off-by: Paul Spooren <mail@aparcar.org>
[split into separate commit, renamed to IMG_PART_SIGNATURE]
Signed-off-by: Petr Štetiar <ynezz@true.cz>
UUID of ext4 volumes generated by make_ext4fs are determined by volume
label and it will all be 57f8f4bc-abf4-655f-bf67-946fc0f9f25b when label
is empty
Labeling them does not make them unique but tools like block command
from fstools have a better chance differentiating them
Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
This replaces deprecated backticks by more versatile $(...) syntax.
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
[decapitalized patch subject at submitter's request]
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
