uid/gid range should be limited to 16bit unsigned integer range to
avoid "wraparound" issues with permissions where jffs2
is employed for storage and chown 65536 (first auto-created user)
becomes equivalent to chown 0
Fixes: #13927
Signed-off-by: Thomas Winkler <tewinkler86@gmail.com>
(cherry picked from commit 140b48a9e9)
Link: https://github.com/openwrt/openwrt/pull/15898
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
This is mostly a cosmetic cleanup. The absence of
the return statement was not causing any problems.
Signed-off-by: Rodrigo Balerdi <lanchon@gmail.com>
(cherry picked from commit 8cf4ac5195)
Similar to the *_get_mac_binary function, also split the common parts
off mtd_get_mac_ascii into new get_mac_ascii function and introduce
mmc_get_mac_ascii which uses it.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
(cherry picked from commit 45c85c1827)
Allow "postinst" scripts to perform extra actions after applying all
kind of fixups implemented using uci-defaults.
This is needed e.g. by uhttpd-mod-ubus which after installation in a
running systems needs to:
1. Update uhttpd config using its uci-defaults script
2. Reload uhttpd
While this approach makes sense there is a risk it'll blow up some
corner case postinst usages. There is only 1 way to find out.
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
(cherry picked from commit b799dd3c70)
The 'label' property in led node has been deprecated and we'd better
to avoid using it. This patch allows us to extract DT OF LED name
from the newly introduced LED properties "color", "function" and
"function-enumerator".
Signed-off-by: Shiji Yang <yangshiji66@qq.com>
(cherry picked from commit e814acc599)
The ucidef_set_network_device_* functions in uci-defaults.sh disagree
on whether to use "network-device" or "network_device" in board.json.
With the additional caveat that jshn will translate hyphens (-) into
underscores (_). This casues problems in netifd which expected
"network_device" causing boards which depend on assigning MACs in
board.json via uci-defaults.sh (or jshn in general) to fail.
This commit addresses the issue by using network_device in
uci-defaults.sh.
The bug was uncovered in the forums here:
https://forum.openwrt.org/t/support-for-rtl838x-based-managed-switches/57875/2596
This was exposed by commit 4ebba8a05d ("realtek: add support for HPE
1920-8g-poe+") where the board_config_load call from 03_gpio introduced
the key normalization by jshn.
Fixes: 9290539ca9 ("base-files: allow setting device and bridge macs")
Tested-by: Stijn Segers <foss@volatilesystems.org>
Signed-off-by: Michael 'ASAP' Weinrich <michael@a5ap.net>
[ improve commit title, description and fix wrong Tested-by tag ]
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
(cherry picked from commit 12bc79d6d5)
Some users have their routers configured to supply a DHCP range that
includes the local interface address.
That worked with dnsmasq because it automatically skips the local
address.
Re-enable those existing configurations for the release and hint at
possible future problems.
Signed-off-by: Leon M. Busch-George <leon@georgemail.eu>
[ wrap commit description and remove unecessary text ]
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Add 2 seconds sleep after each forcibly killed/tried-to-kill process
in the final process termination loop in sysupgrade stage2.
This is needed especially for qualcommax/ipq807x, where ath11k
wireless driver may have a long 10-20 seconds delay after termination
before actually getting killed. This often breaks sysupgrade.
The current KILL loop in kill_remaining does all 10 kill attempts
consecutively without any delay, as evidenced here in a failing sysupgrade.
It does not allow any time for the process to finalize its internal
termination.
Sat Sep 2 19:05:56 EEST 2023 upgrade: Sending TERM to remaining processes ...
Sat Sep 2 19:05:56 EEST 2023 upgrade: Sending signal TERM to hostapd (2122)
Sat Sep 2 19:05:56 EEST 2023 upgrade: Sending signal TERM to hostapd (2138)
Sat Sep 2 19:06:00 EEST 2023 upgrade: Sending KILL to remaining processes ...
Sat Sep 2 19:06:00 EEST 2023 upgrade: Sending signal KILL to hostapd (2122)
Sat Sep 2 19:06:00 EEST 2023 upgrade: Sending signal KILL to hostapd (2138)
Sat Sep 2 19:06:00 EEST 2023 upgrade: Sending signal KILL to hostapd (2138)
Sat Sep 2 19:06:00 EEST 2023 upgrade: Sending signal KILL to hostapd (2138)
Sat Sep 2 19:06:00 EEST 2023 upgrade: Sending signal KILL to hostapd (2138)
Sat Sep 2 19:06:00 EEST 2023 upgrade: Sending signal KILL to hostapd (2138)
Sat Sep 2 19:06:00 EEST 2023 upgrade: Sending signal KILL to hostapd (2138)
Sat Sep 2 19:06:00 EEST 2023 upgrade: Sending signal KILL to hostapd (2138)
Sat Sep 2 19:06:00 EEST 2023 upgrade: Sending signal KILL to hostapd (2138)
Sat Sep 2 19:06:00 EEST 2023 upgrade: Sending signal KILL to hostapd (2138)
Sat Sep 2 19:06:00 EEST 2023 upgrade: Sending signal KILL to hostapd (2138)
Sat Sep 2 19:06:00 EEST 2023 upgrade: Failed to kill all processes.
sysupgrade aborted with return code: 256
The change in this commit adds a 2 seconds delay after each kill attempt
in order to allow some processes to more gracefully handle their
internal termination.
The result is like this:
Sun Sep 3 11:15:10 EEST 2023 upgrade: Sending TERM to remaining processes ...
Sun Sep 3 11:15:10 EEST 2023 upgrade: Sending signal TERM to hostapd (2309)
Sun Sep 3 11:15:10 EEST 2023 upgrade: Sending signal TERM to hostapd (2324)
Sun Sep 3 11:15:14 EEST 2023 upgrade: Sending KILL to remaining processes ...
Sun Sep 3 11:15:14 EEST 2023 upgrade: Sending signal KILL to hostapd (2309)
[ 699.827521] br-lan: port 7(hn5wpa2r) entered disabled state
[ 699.908673] device hn5wpa2r left promiscuous mode
[ 699.908721] br-lan: port 7(hn5wpa2r) entered disabled state
[ 701.038029] br-lan: port 6(hn5wpa3) entered disabled state
Sun Sep 3 11:15:16 EEST 2023 upgrade: Sending signal KILL to hostapd (2324)
[ 702.058256] br-lan: port 5(hn2wlan) entered disabled state
[ 709.250063] stage2 (8237): drop_caches: 3
Sun Sep 3 11:15:25 EEST 2023 upgrade: Switching to ramdisk...
The delay introduced here only kicks in if there is some process that
does not get terminated by the first TERM call. Then there is at least
one 2 sec wait after the first KILL loop round.
This commit is related to discussion in PRs #12235 and #12632
Signed-off-by: Hannu Nyman <hannu.nyman@iki.fi>
Reviewed-by: Robert Marko <robimarko@gmail.com>
(cherry picked from commit 47d56ae546)
Some Broadcom MIPS devices require JFFS2 cleanmarkers to be present on the
kernel partition or the bootloader will identify the partition as corrupt and
won't boot the kernel.
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
(cherry picked from commit 434df8df54)
Set net.core.bpf_jit_kallsyms=1 in /etc/sysctl.d/10-default.conf.
For privileged users, this exports addresses of JIT-compiled programs to
appear in /proc/kallsyms when present, allowing their use for debugging
and in traces.
Signed-off-by: Tony Ambardar <itugrok@yahoo.com>
(cherry picked from commit b3aaede2a7)
When using OpenWRT with DSA and 'lan' ports, we could get an empty
`next_eth`. This is of course not desirable, as this causes `sh: out of
range` errors when trying to determine which one would be greater.
It turns out, that we don't even need this check at all because, when
looking for all existin eth*s on a system, and take the highest index
and then iterate a set of devices and rename to eth${highest_index+n},
it is guaranteed that there will be no conflict.
Fixes: b688bf83f9 ("base-files: rename ethernet devs on known boards")
Signed-off-by: Olliver Schinagl <oliver@schinagl.nl>
This is a silent command that allows easy wifi up/down automation for
scripts.
It takes one or multiple devices as arguments (or all if none are passed),
and the exit code indicates if any of those is not up.
E.g.:
wifi isup && echo "all wifi devices are up"
wifi isup radio0 || echo "this wifi is down"
Signed-off-by: Andre Heider <a.heider@gmail.com>
Use the already present but unused $cmd and $dev variables instead of
positional parameters in ubus_wifi_cmd() to improve readability.
Signed-off-by: Andre Heider <a.heider@gmail.com>
When using "ubiformat" with stdin it requires passing image size using
the -S argument. Provide it just like we do for "ubiupdatevol".
This fixes:
ubiformat: error!: must use '-S' with non-zero value when reading from stdin
This change fixes sysupgrade for bcm53xx and bcm4908 NAND devices
possibly some other targets too.
Cc: Rodrigo Balerdi <lanchon@gmail.com>
Cc: Daniel Golle <daniel@makrotopia.org>
Fixes: 9710712120 ("base-files: accept gzipped nand sysupgrade images")
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Acked-by: Daniel Golle <daniel@makrotopia.org>
Tested-by: Koen Vandeputte <koen.vandeputte@citymesh.com>
In DHCPv6-PD enabled environments, addresses are assigned to interfaces.
These new functions retrieve the IPv6 assigned prefix(es).
Signed-off-by: Mark Baker <mark@vpost.net>
On some devices the chip has RTC but no battery save time.
This leads back to getting the wrong time
and skipping the check of the last file modification date.
This commit ensures that the file time is checked even
if the RTC exists.
which would ordinarily return an approbiate
system time used for e.g. certificate generation.
Tested-on: NanoPi R2S
Signed-off-by: Yuan Tao <ty@wevs.org>
Starting from Linux Kernel version 6.3 UBI devices will no longer be
considered virtual, but rather have an MTD device parent. Hence they
will no longer be listed under /sys/devices/virtual/ubi which is
used in multiple places in OpenWrt. Prepare for future kernels by
using /sys/class/ubi instead of /sys/devuces/virtual/ubi.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
There's hardly an shell logic in ipcalc.sh and a $* that would garble
parameter positions.
Move the awk invokation to the shebang.
A rename from "ipcalc.sh" to "ipcalc" is desirable but could prove tricky
with packages in other repositories depending on the filename.
Signed-off-by: Leon M. George <leon@georgemail.eu>
It's possible to move range boundaries in a way that the start address
lies behind the end address.
Detect this condition and exit with an error message.
Signed-off-by: Leon M. George <leon@georgemail.eu>
With this patch, ipcalc only calculates range boundaries if the
corresponding parameters are supplied.
Signed-off-by: Leon M. George <leon@georgemail.eu>
$BOOTDEV_MAJOR may be empty for many of the uevents parsed in this
function. This condition thus tends to fail benignly (we just skip to
the next device), but it can really clutter the stage2 sysupgrade
stderr, since it looks like the "=" operand doesn't have an appropriate
left-hand argument.
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
This change ensures compatibility with both types of sysupgrade-tar files.
1. For some boards like xiaomi,redmi-router-ax6s, sysupgrade-tar
is pack in directory `vendor,name/`
2. For some boards like xiaomi,mi-router-3g, sysupgrade-tar is pack
in directory `vendor_name/`
Signed-off-by: Chen Minqiang <ptpt52@gmail.com>
emmc_do_upgrade() relies on identify() from the nand.sh upgrade helper.
This only works because FEATURES=emmc targets also tend to include
FEATURES=nand.
Rename identify_magic() to identify_magic_long() to match the common.sh
style and make it clear it pairs with other *_long() variants (and not,
say *_word()).
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
It's necessary to be able to specify the length
for MAC addresses that are stored in flash, for example,
in a case where it is stored without any delimiter.
Let both offset and length have default values.
Add a sanity check related to partition size.
Also, clean up syntax and unnecessary lines.
Signed-off-by: Michael Pratt <mcpratt@pm.me>
This is a MT7621-based device with 128MB NAND flash, 256MB RAM, and a USB port.
The board has headers to attach console. In order for them to work two solder
bridges near those pads need to be made.
The defice has the following partition table:
```
0x000000000000-0x000000080000 : "u-boot"
0x000000080000-0x000000100000 : "u-boot-env"
0x000000100000-0x000000140000 : "factory"
0x000000140000-0x000007e00000 : "firmware"
0x000007e00000-0x000008000000 : "panic-ops"
```
`firmware` partition contains UBI volumes. Unfortunately I accidentally wiped
partition and I no longer have access to it.
`firmware` partition contains 'secondary' U-Boot which is run by 'first' u-boot.
It also contains various configuration partitions that include device info and
MAC address. There also seems to be 'primary' and 'backup' set of 'main' volumes.
U-boot has `mtkupgrade` command that just overrides data on firmware partitions.
Firmware file provided by TP-Link cannot be used with that command.
U-boot also has 'recovery' http server. Unfortunately I was not able to make it
work with manufacturer's firmware.
Manufacturer's firmware essentially contains multiple UBI volumes along with
'partition table'. Unfortunately I no longer can properly run manufacturer's
firmware so I cannot at the moment try to a support for building 'factory' images.
This patch adds support for initramfs image as well as sysupgrade image.
This seems to be pretty standard MT7621 board otherwise.
Things that work:
* network
* leds
* usb
* factory MAC detection
Signed-off-by: Nikolay Martynov <mar.kolya@gmail.com>
This is used to access footer data in firmare files, and is simpler and
less error-prone than using 'dd' with calculated offsets.
Signed-off-by: Tony Ambardar <itugrok@yahoo.com>
Ensure the MAC address for all NanoPi R1 boards is assigned uniquely for
each board.
The vendor ships the device in two variants; one with and one without
eMMC; but both without static mac-addresses.
In order to assign both board types unique MAC addresses, fall back on
the same method used for the NanoPi R2S and R4S in case the EEPROM
chip is not present by generating the board MAC from the SD card CID.
[0] https://wiki.friendlyelec.com/wiki/index.php/NanoPi_R1#Hardware_Spec
Similar too and based on:
commit b5675f500d ("rockchip: ensure NanoPi R4S has unique MAC address")
Co-authored-by: David Bauer <mail@david-bauer.net>
Signed-off-by: Jan-Niklas Burfeind <git@aiyionpri.me>
There are some devices putting kernel and rootfs on separated
ubi volumes. To make OpenWrt compatible with their bootloader,
we need to put kernel and rootfs into separated ubi volumes.
Add support for CI_KERN_UBIPART and CI_ROOT_UBIPART for this
situation.
Signed-off-by: Chuanhong Guo <gch981213@gmail.com>
split ubi reformat/attach into nand_attach_ubi in preparation
for reusing this code in other functions.
Signed-off-by: Chuanhong Guo <gch981213@gmail.com>
Several Broadcom targets were using the nand_do_upgrade_success
shell function which has been removed by commit e25e6d8e54
("base-files: fix and clean up nand sysupgrade code"). Refactor the
new nand_do_upgrade to bring back nand_do_upgrade_success with the
behavior expected by those users.
Fixes: e25e6d8e54 ("base-files: fix and clean up nand sysupgrade code")
Reported-by: Chen Minqiang <ptpt52@gmail.com>
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
When firmware images only contained compressed kernels and squashfs roots,
uncompressed tar files were a good option. We are now using UBIFS images,
both raw and tarred, as well as ubinized (full UBI partition) images, all
of which benefit greatly from compression.
For example, a raw ubinized backup taken from a running Askey RT4230W REV6
(such full backups can be restored via the LUCI's sysupgrade UI) is over
400 MB, but compresses to less than 10 MB.
This commit adds support for gzipped versions of all file types already
accepted by the nand sysupgrade mechanism, be them raw or tarred.
Signed-off-by: Rodrigo Balerdi <lanchon@gmail.com>
It has been reported that ubinized nand sysupgrade fails under certain
circumstances, being unable to detach the existing ubi partition due to
volumes within the partition being mounted.
This is an attempt to solve such issues by unmounting and removing
ubiblock devices and unmounting ubi volumes within the target partition
prior to detaching and formatting it.
Signed-off-by: Rodrigo Balerdi <lanchon@gmail.com>
- Never return from 'nand_do_upgrade', not even in case of errors, as that
would cause execution of sysupgrade code not intended for NAND devices.
- Unify handling of sysupgrade success and failure.
- Detect and report more error conditions.
- Fix outdated/incorrect/unclear comments.
Signed-off-by: Rodrigo Balerdi <lanchon@gmail.com>
Commit e8b5429609 included an unintended change and we now call
scan_wifi before a network reload.
Restore the original behaviour and call scan_wifi only after a network
reload.
Fixes: e8b5429609 ("base-files: wifi: tidy up the reconf code")
Signed-off-by: Bob Cantor <bobc@confidesk.com>
Commit b82cc80713 included an unintended change and we now call
scan_wifi before a network reload.
Restore the original behaviour and call scan_wifi only after a network
reload.
Fixes: b82cc80713 ("base-files: wifi: swap the order of some ubus calls")
Signed-off-by: Bob Cantor <bobc@confidesk.com>
Make it possible to setup default WAN interface for devices with built-in LTE
modems, using QMI or MBIM.
Signed-off-by: Andrey Butirsky <butirsky@gmail.com>
Reviewed-by: Lech Perczak <lech.perczak@gmail.com>
These will be used to give WLAN PHYs a specific name based on path specified
in board.json. The platform board.d script can assign a specific order based
on available slots (PCIe slots, WMAC device) and device tree configuration.
This helps with maintaining config compatibility in case the device path
changes due to kernel upgrades.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
The currently used shell expansion doesn't seem to exist [0] and also
does not work. This surely was not intended, so lets allow default
naming to actually work.
[0]: https://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html
Fixes: be09c5a3cd ("base-files: add board.d support for bridge device")
Signed-off-by: Olliver Schinagl <oliver@schinagl.nl>
Add support for TP-Link Deco S4 wifi router
The label refers to the device as S4R and the TP-Link firmware
site calls it the Deco S4 v2. (There does not appear to be a v1)
Hardware (and FCC id) are identical to the Deco M4R v2 but the
flash layout is ordered differently and the OEM firmware encrypts
some config parameters (including the label mac address) in flash
In order to set the encrypted mac address, the wlan's caldata
node is removed from the DTS so the mac can be decrypted with
the help of the uencrypt tool and patched into the wlan fw
via hotplug
Specifications:
SoC: QCA9563-AL3A
RAM: Zentel A3R1GE40JBF
Wireless 2.4GHz: QCA9563-AL3A (main SoC)
Wireless 5GHz: QCA9886
Ethernet Switch: QCA8337N-AL3C
Flash: 16 MB SPI NOR
UART serial access (115200N1) on board via solder pads:
RX = TP1 pad
TX = TP2 pad
GND = C201 (pad nearest board edge)
The device's bootloader and web gui will only accept images that
were signed using TP-Link's RSA key, however a memory safety bug
in the bootloader can be leveraged to install openwrt without
accessing the serial console. See developer forum S4 support page
for link to a "firmware" file that starts a tftp client, or you
may generate one on your own like this:
```
python - > deco_s4_faux_fw_tftp.bin <<EOF
import sys
from struct import pack
b = pack('>I', 0x00008000) + b'X'*16 + b"fw-type:" \
+ b'x'*256 + b"S000S001S002" + pack('>I', 0x80060200) \
b += b"\x00"*(0x200-len(b)) \
+ pack(">33I", *[0x3c0887fc, 0x35083ddc, 0xad000000, 0x24050000,
0x3c048006, 0x348402a0, 0x3c1987f9, 0x373947f4,
0x0320f809, 0x00000000, 0x24050000, 0x3c048006,
0x348402d0, 0x3c1987f9, 0x373947f4, 0x0320f809,
0x00000000, 0x24050000, 0x3c048006, 0x34840300,
0x3c1987f9, 0x373947f4, 0x0320f809, 0x00000000,
0x24050000, 0x3c048006, 0x34840400, 0x3c1987f9,
0x373947f4, 0x0320f809, 0x00000000, 0x1000fff1,
0x00000000])
b += b"\xff"*(0x2A0-len(b)) + b"setenv serverip 192.168.0.2\x00"
b += b"\xff"*(0x2D0-len(b)) + b"setenv ipaddr 192.168.0.1\x00"
b += b"\xff"*(0x300-len(b)) + b"tftpboot 0x81000000 initramfs-kernel.bin\x00"
b += b"\xff"*(0x400-len(b)) + b"bootm 0x81000000\x00"
b += b"\xff"*(0x8000-len(b))
sys.stdout.buffer.write(b)
EOF
```
Installation:
1. Run tftp server on pc with static ip 192.168.0.2
2. Place openwrt "initramfs-kernel.bin" image in tftp root dir
3. Connect pc to router ethernet port1
4. While holding in reset button on bottom of router, power on router
5. From pc access router webgui at http://192.168.0.1
6. Upload deco_s4_faux_fw_tftp.bin
7. Router will load and execture in-memory openwrt
8. Switch pc back to dhcp or static 192.168.1.x
9. Flash openwrt sysupgrade image via luci/ssh at 192.168.1.1
Revert to stock:
Press and hold reset button while powering device to start the
bootloader's recovery mode, where stock firmware can be uploaded
via web gui at 192.168.0.1
Please note that one additional non-github commits is also needed:
firmware-utils: add tplink-safeloader support for Deco S4
Signed-off-by: Nick French <nickfrench@gmail.com>
Some platforms lack an established way to name netdevs; for example,
on x86, PCIe-based ethernet interfaces will be named starting from
eth0 in the order they are probed. This is a problem for many devices
supported explicitly by OpenWrt which have hard-wired, standalone or
on-CPU NICs not supported by DSA (which is usually used to rename the
ports based on their ostensible function).
To fix this, add a mapping between ethernet device name and sysfs
device path to board.json; this allows us to configure ethernet device
names we know about for a given board so that they correspond to
external labeling.
Signed-off-by: Martin Kennedy <hurricos@gmail.com>
It allows prepopulating /etc/config/network interface-s with predefined
metric. It may be useful for devices with multiple WAN ports.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Some Arcadyan devices (e.g. MTS WG430223) keep their config in encrypted
mtd. This adds mtd_get_mac_encrypted_arcadyan() function to get the MAC
address from the encrypted partition. Function uses uencrypt utility for
decryption (and openssl if the uencrypt wasn't found).
Signed-off-by: Mikhail Zhilkin <csharper2005@gmail.com>
The heartbeat trigger has the option to be inverted, however
openwrt/uci/luci have no way to set this.
This patch adds this support.
Signed-off-by: Olliver Schinagl <oliver@schinagl.nl>
On x86, when both CONFIG_GRUB_CONSOLE and CONFIG_GRUB_SERIAL are set (as
they are by default), the kernel command line will have two console=
entries, such as
console=tty0 console=ttyS0,115200n8
Failsafe was only running a shell on the first defined console, the VGA
console. This is a problem for devices like apu2, where there is only a
serial console and it appears on ttyS0.
Moreover, the console prompt to enter failsafe during boot was delivered
to, and its input read from, the last console= on the kernel command
line. So while the failsafe shell was on the first defined console, only
the last defined console could be used to enter failsafe during boot.
In contrast, the x86 bootloader (GRUB) operates on both the serial
console and the VGA console by virtue of "terminal_{input,output}
console serial". GRUB also provided an alternate means to enter failsafe
from either console. The presence of two console= kernel command line
parameters causes kernel messages to be delivered to both. Under normal
operation (not failsafe), procd runs login in accordance with inittab,
which on x86 specifies ttyS0, hvc0, and tty1, allowing login through any
of serial, hypervisor, or VGA console. Thus, serial access was
consistently available on x86 devices with serial consoles under normal
operation, except for shell access in failsafe mode (without editing the
kernel command line).
By presenting the failsafe prompt, reading failsafe prompt input, and
running failsafe shells on all consoles listed in /proc/cmdline,
failsafe mode will work correctly on devices with a serial console (like
apu2), and the same image without any need for reconfiguration can be
shared by devices with the more traditional (for x86) VGA console. This
improvement should benefit any system with multiple console= arguments,
including x86 and bcm27xx (Raspberry Pi).
Signed-off-by: Mark Mentovai <mark at moxienet.com>