There seems to be a problem with setting #WP. On the other hand ignoring
the #WP seems to work. rootfs_data UBI volume seems to persist changes.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
BCM4908 bootloader requires firmware with JFFS2 image containing:
1. cferam.000
2. 94908.dtb
3. vmlinux.lz
4. device custom files
cferam.000 can be obtained from the bcm63xx-cfe repository.
device custom files are stored in images dir.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
procd doesn't work with just serial specified in the DT (using chosen &
stdout-path). It requires tty device to be explicitly specified in the
cmdline.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
1. It's useful for developing & validating DTS files inside OpenWrt
2. This will allow backporting later changes that depend on it
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
All modification made by update_kernel.sh in a fresh clone without
existing toolchains.
Build system: x86_64
Build-tested: ipq806x/R7800, bcm27xx/bcm2711
Run-tested: ipq806x/R7800
No dmesg regressions, everything functional
Signed-off-by: John Audia <graysky@archlinux.us>
Tested-by: Curtis Deptuck <curtdept@me.com> [x86/64]
Device specifications:
======================
* Qualcomm/Atheros QCA9558 ver 1 rev 0
* 720/600/240 MHz (CPU/DDR/AHB)
* 128 MB of RAM
* 16 MB of SPI NOR flash
- 2x 7 MB available; but one of the 7 MB regions is the recovery image
* 3T3R 2.4 GHz Wi-Fi (11n)
* 3T3R 5 GHz Wi-Fi (11ac)
* 6x GPIO-LEDs (2x wifi, 2x status, 1x lan, 1x power)
* 1x GPIO-button (reset)
* external h/w watchdog (enabled by default))
* TTL pins are on board (arrow points to VCC, then follows: GND, TX, RX)
* 1x ethernet
- AR8035 ethernet PHY (RGMII)
- 10/100/1000 Mbps Ethernet
- 802.3af POE
- used as LAN interface
* 12-24V 1A DC
* internal antennas
Flashing instructions:
======================
Various methods can be used to install the actual image on the flash.
Two easy ones are:
ap51-flash
----------
The tool ap51-flash (https://github.com/ap51-flash/ap51-flash) should be
used to transfer the image to the u-boot when the device boots up.
initramfs from TFTP
-------------------
The serial console must be used to access the u-boot shell during bootup.
It can then be used to first boot up the initramfs image from a TFTP server
(here with the IP 192.168.1.21):
setenv serverip 192.168.1.21
setenv ipaddr 192.168.1.1
tftpboot 0c00000 <filename-of-initramfs-kernel>.bin && bootm $fileaddr
The actual sysupgrade image can then be transferred (on the LAN port) to the
device via
scp <filename-of-squashfs-sysupgrade>.bin root@192.168.1.1:/tmp/
On the device, the sysupgrade must then be started using
sysupgrade -n /tmp/<filename-of-squashfs-sysupgrade>.bin
Signed-off-by: Sven Eckelmann <sven@narfation.org>
[rebase, add LED migration]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Device specifications:
======================
* Qualcomm/Atheros QCA9558 ver 1 rev 0
* 720/600/240 MHz (CPU/DDR/AHB)
* 128 MB of RAM
* 16 MB of SPI NOR flash
- 2x 7 MB available; but one of the 7 MB regions is the recovery image
* 3T3R 2.4 GHz Wi-Fi (11n)
* 3T3R 5 GHz Wi-Fi (11ac)
* 6x GPIO-LEDs (2x wifi, 2x status, 1x lan, 1x power)
* 1x GPIO-button (reset)
* external h/w watchdog (enabled by default))
* TTL pins are on board (arrow points to VCC, then follows: GND, TX, RX)
* 1x ethernet
- AR8035 ethernet PHY (RGMII)
- 10/100/1000 Mbps Ethernet
- 802.3af POE
- used as LAN interface
* 12-24V 1A DC
* internal antennas
Flashing instructions:
======================
Various methods can be used to install the actual image on the flash.
Two easy ones are:
ap51-flash
----------
The tool ap51-flash (https://github.com/ap51-flash/ap51-flash) should be
used to transfer the image to the u-boot when the device boots up.
initramfs from TFTP
-------------------
The serial console must be used to access the u-boot shell during bootup.
It can then be used to first boot up the initramfs image from a TFTP server
(here with the IP 192.168.1.21):
setenv serverip 192.168.1.21
setenv ipaddr 192.168.1.1
tftpboot 0c00000 <filename-of-initramfs-kernel>.bin && bootm $fileaddr
The actual sysupgrade image can then be transferred (on the LAN port) to the
device via
scp <filename-of-squashfs-sysupgrade>.bin root@192.168.1.1:/tmp/
On the device, the sysupgrade must then be started using
sysupgrade -n /tmp/<filename-of-squashfs-sysupgrade>.bin
Signed-off-by: Sven Eckelmann <sven@narfation.org>
[rebase, apply shared DTSI/device node, add LED migration]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
The OpenMesh MR900 and to-be-added MR1750 family are very similar.
Make the existing MR900 DTSI more general so it can be used for
the MR1750 devices as well.
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
The shared image definitions for OpenMesh devices are currently
organized based on device families. This introduces some duplicate
code, as the image creation code is mostly the same for those.
This patch thus derives two basic shared definitions that work for
all devices and only requires a few variables to be moved back to
the device definitions.
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
The OpenMesh MR900 is a modified version of the Exx900/Exx1750 family.
These devices are shipped with an AR803x PHY and had various problems with
the delay configuration in ar71xx. These problems are now in the past [1]
and parts of the delay configuration should now be done in the PHY only.
Just switch to the configuration of the ECB1750 to have an already well
tested configuration for ath79 with the newer kernel versions.
[1] https://github.com/openwrt/openwrt/pull/3505#issuecomment-716050292
Reported-by: Michael Pratt <mcpratt@pm.me>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Device specifications:
======================
* Qualcomm/Atheros QCA9558 ver 1 rev 0
* 720/600/240 MHz (CPU/DDR/AHB)
* 128 MB of RAM
* 16 MB of SPI NOR flash
- 2x 7 MB available; but one of the 7 MB regions is the recovery image
* 3T3R 2.4 GHz Wi-Fi
* 3T3R 5 GHz Wi-Fi
* 6x GPIO-LEDs (2x wifi, 2x status, 1x lan, 1x power)
* 1x GPIO-button (reset)
* external h/w watchdog (enabled by default))
* TTL pins are on board (arrow points to VCC, then follows: GND, TX, RX)
* 1x ethernet
- AR8035 ethernet PHY (RGMII)
- 10/100/1000 Mbps Ethernet
- 802.3af POE
- used as LAN interface
* 12-24V 1A DC
* internal antennas
Flashing instructions:
======================
Various methods can be used to install the actual image on the flash.
Two easy ones are:
ap51-flash
----------
The tool ap51-flash (https://github.com/ap51-flash/ap51-flash) should be
used to transfer the image to the u-boot when the device boots up.
initramfs from TFTP
-------------------
The serial console must be used to access the u-boot shell during bootup.
It can then be used to first boot up the initramfs image from a TFTP server
(here with the IP 192.168.1.21):
setenv serverip 192.168.1.21
setenv ipaddr 192.168.1.1
tftpboot 0c00000 <filename-of-initramfs-kernel>.bin && bootm $fileaddr
The actual sysupgrade image can then be transferred (on the LAN port) to the
device via
scp <filename-of-squashfs-sysupgrade>.bin root@192.168.1.1:/tmp/
On the device, the sysupgrade must then be started using
sysupgrade -n /tmp/<filename-of-squashfs-sysupgrade>.bin
Signed-off-by: Sven Eckelmann <sven@narfation.org>
[rebase, add LED migration]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Device specifications:
======================
* Qualcomm/Atheros QCA9558 ver 1 rev 0
* 720/600/240 MHz (CPU/DDR/AHB)
* 128 MB of RAM
* 16 MB of SPI NOR flash
- 2x 7 MB available; but one of the 7 MB regions is the recovery image
* 3T3R 2.4 GHz Wi-Fi
* 3T3R 5 GHz Wi-Fi
* 6x GPIO-LEDs (2x wifi, 2x status, 1x lan, 1x power)
* 1x GPIO-button (reset)
* external h/w watchdog (enabled by default))
* TTL pins are on board (arrow points to VCC, then follows: GND, TX, RX)
* 1x ethernet
- AR8035 ethernet PHY (RGMII)
- 10/100/1000 Mbps Ethernet
- 802.3af POE
- used as LAN interface
* 12-24V 1A DC
* internal antennas
Flashing instructions:
======================
Various methods can be used to install the actual image on the flash.
Two easy ones are:
ap51-flash
----------
The tool ap51-flash (https://github.com/ap51-flash/ap51-flash) should be
used to transfer the image to the u-boot when the device boots up.
initramfs from TFTP
-------------------
The serial console must be used to access the u-boot shell during bootup.
It can then be used to first boot up the initramfs image from a TFTP server
(here with the IP 192.168.1.21):
setenv serverip 192.168.1.21
setenv ipaddr 192.168.1.1
tftpboot 0c00000 <filename-of-initramfs-kernel>.bin && bootm $fileaddr
The actual sysupgrade image can then be transferred (on the LAN port) to the
device via
scp <filename-of-squashfs-sysupgrade>.bin root@192.168.1.1:/tmp/
On the device, the sysupgrade must then be started using
sysupgrade -n /tmp/<filename-of-squashfs-sysupgrade>.bin
Signed-off-by: Sven Eckelmann <sven@narfation.org>
[rebase, add LED migration]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
The OpenMesh MR600 is a modified version of the EAP600 family. These
devices are shipped with an AR803x PHY and had various problems with the
delay configuration in ar71xx. These problems are now in the past [1] and
parts of the delay configuration should now be done in the PHY only.
Just switch to the configuration of the EAP600 to have an already well
tested configuration for ath79 with the newer kernel versions.
[1] https://github.com/openwrt/openwrt/pull/3505#issuecomment-716050292
Reported-by: Michael Pratt <mcpratt@pm.me>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Device specifications:
======================
* Qualcomm/Atheros AR9344 rev 2
* 560/450/225 MHz (CPU/DDR/AHB)
* 128 MB of RAM
* 16 MB of SPI NOR flash
- 2x 7 MB available; but one of the 7 MB regions is the recovery image
* 2T2R 2.4 GHz Wi-Fi
* 2T2R 5 GHz Wi-Fi
* 8x GPIO-LEDs (6x wifi, 1x wps, 1x power)
* 1x GPIO-button (reset)
* external h/w watchdog (enabled by default))
* TTL pins are on board (arrow points to VCC, then follows: GND, TX, RX)
* 1x ethernet
- AR8035 ethernet PHY (RGMII)
- 10/100/1000 Mbps Ethernet
- 802.3af POE
- used as LAN interface
* 12-24V 1A DC
* internal antennas
Flashing instructions:
======================
Various methods can be used to install the actual image on the flash.
Two easy ones are:
ap51-flash
----------
The tool ap51-flash (https://github.com/ap51-flash/ap51-flash) should be
used to transfer the image to the u-boot when the device boots up.
initramfs from TFTP
-------------------
The serial console must be used to access the u-boot shell during bootup.
It can then be used to first boot up the initramfs image from a TFTP server
(here with the IP 192.168.1.21):
setenv serverip 192.168.1.21
setenv ipaddr 192.168.1.1
tftpboot 0c00000 <filename-of-initramfs-kernel>.bin && bootm $fileaddr
The actual sysupgrade image can then be transferred (on the LAN port) to the
device via
scp <filename-of-squashfs-sysupgrade>.bin root@192.168.1.1:/tmp/
On the device, the sysupgrade must then be started using
sysupgrade -n /tmp/<filename-of-squashfs-sysupgrade>.bin
Signed-off-by: Sven Eckelmann <sven@narfation.org>
[rebase, add LED migration]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Device specifications:
======================
* Qualcomm/Atheros AR9344 rev 2
* 560/450/225 MHz (CPU/DDR/AHB)
* 128 MB of RAM
* 16 MB of SPI NOR flash
- 2x 7 MB available; but one of the 7 MB regions is the recovery image
* 2T2R 2.4 GHz Wi-Fi
* 2T2R 5 GHz Wi-Fi
* 4x GPIO-LEDs (2x wifi, 1x wps, 1x power)
* 1x GPIO-button (reset)
* TTL pins are on board (arrow points to VCC, then follows: GND, TX, RX)
* 1x ethernet
- AR8035 ethernet PHY (RGMII)
- 10/100/1000 Mbps Ethernet
- 802.3af POE
- used as LAN interface
* 12-24V 1A DC
* internal antennas
Flashing instructions:
======================
Various methods can be used to install the actual image on the flash.
Two easy ones are:
ap51-flash
----------
The tool ap51-flash (https://github.com/ap51-flash/ap51-flash) should be
used to transfer the image to the u-boot when the device boots up.
initramfs from TFTP
-------------------
The serial console must be used to access the u-boot shell during bootup.
It can then be used to first boot up the initramfs image from a TFTP server
(here with the IP 192.168.1.21):
setenv serverip 192.168.1.21
setenv ipaddr 192.168.1.1
tftpboot 0c00000 <filename-of-initramfs-kernel>.bin && bootm $fileaddr
The actual sysupgrade image can then be transferred (on the LAN port) to the
device via
scp <filename-of-squashfs-sysupgrade>.bin root@192.168.1.1:/tmp/
On the device, the sysupgrade must then be started using
sysupgrade -n /tmp/<filename-of-squashfs-sysupgrade>.bin
Signed-off-by: Sven Eckelmann <sven@narfation.org>
[rebase, make WLAN LEDs consistent, add LED migration]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
The "cidr_contains6" functions clones the given cidr. The contains4
does not clone the cidr. Both functions do not behave the same.
I see no reason to push the cidr. I think that we get only a negligible
performance gain, but it makes ipv4 and ipv6 equal again.
Signed-off-by: Nick Hainke <vincent@systemli.org>
All modification made by update_kernel.sh in a fresh clone without
existing toolchains.
Build system: x86_64
Build-tested: ipq806x/R7800, bcm27xx/bcm2711
Run-tested: ipq806x/R7800
No dmesg regressions, everything functional
Signed-off-by: John Audia <graysky@archlinux.us>
Tested-by: Curtis Deptuck <curtdept@me.com> [x86/64]
This fixes the following security problems in dnsmasq:
* CVE-2020-25681:
Dnsmasq versions before 2.83 is susceptible to a heap-based buffer
overflow in sort_rrset() when DNSSEC is used. This can allow a remote
attacker to write arbitrary data into target device's memory that can
lead to memory corruption and other unexpected behaviors on the target
device.
* CVE-2020-25682:
Dnsmasq versions before 2.83 is susceptible to buffer overflow in
extract_name() function due to missing length check, when DNSSEC is
enabled. This can allow a remote attacker to cause memory corruption
on the target device.
* CVE-2020-25683:
Dnsmasq version before 2.83 is susceptible to a heap-based buffer
overflow when DNSSEC is enabled. A remote attacker, who can create
valid DNS replies, could use this flaw to cause an overflow in a heap-
allocated memory. This flaw is caused by the lack of length checks in
rtc1035.c:extract_name(), which could be abused to make the code
execute memcpy() with a negative size in get_rdata() and cause a crash
in Dnsmasq, resulting in a Denial of Service.
* CVE-2020-25684:
A lack of proper address/port check implemented in Dnsmasq version <
2.83 reply_query function makes forging replies easier to an off-path
attacker.
* CVE-2020-25685:
A lack of query resource name (RRNAME) checks implemented in Dnsmasq's
versions before 2.83 reply_query function allows remote attackers to
spoof DNS traffic that can lead to DNS cache poisoning.
* CVE-2020-25686:
Multiple DNS query requests for the same resource name (RRNAME) by
Dnsmasq versions before 2.83 allows for remote attackers to spoof DNS
traffic, using a birthday attack (RFC 5452), that can lead to DNS
cache poisoning.
* CVE-2020-25687:
Dnsmasq versions before 2.83 is vulnerable to a heap-based buffer
overflow with large memcpy in sort_rrset() when DNSSEC is enabled. A
remote attacker, who can create valid DNS replies, could use this flaw
to cause an overflow in a heap-allocated memory. This flaw is caused
by the lack of length checks in rtc1035.c:extract_name(), which could
be abused to make the code execute memcpy() with a negative size in
sort_rrset() and cause a crash in dnsmasq, resulting in a Denial of
Service.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
The referenced commit is gone, but we already have this file on our
mirror, use that one by providing the correct mirror hash.
I generated a tar.xz file with the given git commit hash using a random
fork on github and it generated the same tar.xz file as found on our
mirror so this looks correct.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
The referenced commit is gone, but we already have this file on our
mirror, use that one by providing the correct mirror hash.
I generated a tar.xz file with the given git commit hash using a random
fork on github and it generated the same tar.xz file as found on our
mirror so this looks correct.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Kerning seems to be very off-putting for some people so the logo
designer thankfully updated guidelines to something which is now
considered final.
Signed-off-by: Paul Spooren <mail@aparcar.org>
These devices do not run Ubiquiti AirOS. Rename the partition to the
name used by other UniFi devices with vendor dualboot support.
Signed-off-by: David Bauer <mail@david-bauer.net>
The NanoPi R2S does not have a board specific MAC address written inside
e.g. an EEPROM, hence why it is randomly generated on first boot.
The issue with that however is the lack of a driver for the PRNG.
It often results to the same MAC address used on multiple boards by
default, as urngd is not active at this early stage resulting in low
available entropy.
There is however a semi-unique identifier available to us, which is the
CID of the used SD card. It is unique to each SD card, hence we can use
it to generate the MAC address used for LAN and WAN.
Signed-off-by: David Bauer <mail@david-bauer.net>
Flashing image with BCM4908 CFE bootloader requires specific firmware
format. It needs 20 extra bytes with magic numbers and CRC32 appended.
This tools allows appending such a tail to the specified image and also
verifying CRC32 of existing BCM4908 image.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
53f07e9 ra: fix routing loop on point to point links
2b6959d ra: align ifindex resolving
Tested-by: Karl Vogel <karl.vogel@gmail.com>
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
This enables the MikroTik platform driver, it enables us to parse
valuable info from hard_config including WLAN calibration data
extraction from sysfs.
Signed-off-by: Robert Marko <robimarko@gmail.com>
This enables the new MikroTik specific partition parser.
This avoids manually specifying the MikroTik specific partitions as they
can be detected by their magic values.
Signed-off-by: Robert Marko <robimarko@gmail.com>
MikroTik devices require the use of raw vmlinux out of the self
extracting compressed kernels.
They also require 4K sectors, kernel2minor, partition parser as well as
RouterBoard platform drivers.
So in order to not add unnecessary code to the generic sub target lets
introduce a MikroTik sub target.
Signed-off-by: Robert Marko <robimarko@gmail.com>
If the watchdog is enabled, set the timeout to 30 seconds before
decompress is started.
Mikrotik ipq40xx devices running with RouterBoot have the SoC watchdog
enabled and running with a timeout that does not allow time for the
kernel to decompress and manage the watchdog.
On ipq40xx RouterBoot TFTP boot the watchdog countdown is reset before:
Jumping to kernel
Signed-off-by: John Thomson <git@johnthomson.fastmail.com.au>
This adds a appended_dtb section to the ARM decompressor
linker script.
This allows using the existing ARM zImage appended DTB support for
appending a DTB to the raw ELF kernel.
Its size is set to 1MB max to match the zImage appended DTB size limit.
To use it to pass the DTB to the kernel, objcopy is used:
objcopy --set-section-flags=.appended_dtb=alloc,contents \
--update-section=.appended_dtb=<target>.dtb vmlinux
This is based off the following patch:
c063e27e02
Signed-off-by: Robert Marko <robimarko@gmail.com>
Reordered for consistency between packages.
Fixed license information.
Change PKG_BUILD_PARALLEL to 1. This is no longer a problem.1
Signed-off-by: Rosen Penev <rosenp@gmail.com>
4c619b3eed x86: Check IFUNC definition in unrelocated executable [BZ #20019]
87450ecf8a x86: Set header.feature_1 in TCB for always-on CET [BZ #27177]
2b4f67c2b3 Update for [BZ #27130] fix
1a24bbd43e x86-64: Avoid rep movsb with short distance [BZ #27130]
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
The removed config symbols are already enabled by the generic kernel
configuration (or by default), while the added ones are forcefully
enabled by the specific architecture.
Signed-off-by: Rui Salvaterra <rsalvaterra@gmail.com>
The USB port definition is only needed when it is linked to a USB
LED. Since there is none for this device, we might as well remove
the port definition.
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
CPU: Atheros AR9342 rev 3 SoC
RAM: 64 MB DDR2
Flash: 16 MB NOR SPI
WLAN 2.4GHz: Atheros AR9342 v3 (ath9k)
WLAN 5.0GHz: QCA988X
Ports: 1x GbE
Flashing procedure is identical to other ubnt devices.
https://openwrt.org/toh/ubiquiti/common
Flashing through factory firmware
1. Ensure firmware version v8.7.0 is installed.
Up/downgrade to this exact version.
2. Patch fwupdate.real binary using
`hexdump -Cv /bin/ubntbox | sed 's/14 40 fe 27/00 00 00 00/g' | \
hexdump -R > /tmp/fwupdate.real`
3. Make the patched fwupdate.real binary executable using
`chmod +x /tmp/fwupdate.real`
4. Copy the squashfs factory image to /tmp on the device
5. Flash OpenWrt using `/tmp/fwupdate.real -m <squashfs-factory image>`
6. Wait for the device to reboot
(copied from Ubiquiti NanoBeam AC and modified)
Flashing from serial console
1. Connect serial console (115200 baud)
2. Connect ethernet to a network with a TFTP server, through a
passive PoE injector.
3. Press a key to obtain a u-boot prompt
4. Set your TFTP server's ip address, with:
setenv serverip <tftp-server-address>
5. Set the Bullet AC's ip address, with:
setenv ipaddr <bullet-ac-address>
6. Set the boot file, with:
setenv bootfile <name-of-initramfs-binary-on-tftp-server>
7. Fetch the binary with tftp:
tftpboot
8. Boot the initramfs binary:
bootm
9. From the initramfs, fetch the sysupgrade binary, and flash it with
sysupgrade.
The Bullet AC is identified as a 2WA board by Ubiquiti. As such, the UBNT_TYPE
must match from the "Flashing through factory firmware" install instructions
to work.
Phy0 is QCA988X which can tune either band (2.4 or 5GHz). Phy1 is AR9342,
on which 5GHz is disabled. It isn't currently known whether phy1 is
routed to the N connector at all.
Signed-off-by: Russell Senior <russell@personaltelco.net>
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>
Those targets have already enabled some other LED triggers, so enabling
a few more won't be a big problem.
Signed-off-by: Sungbo Eo <mans0n@gorani.run>
The heartbeat trigger is used by luci-mod-system, which is installed
as a part of the standard luci package set. It seems the LED trigger
will be required quite often, so let's enable it by default.
This increases uncompressed kernel size by about 100 bytes on ath79/generic.
Signed-off-by: Sungbo Eo <mans0n@gorani.run>
