While an image layout based on MBR and 'bootfs' partition may be easy
to understand for users who are very used to the IBM PC and always have
the option to access the SD card outside of the device (and hence don't
really depend on other recovery methods or dual-boot), in my opinion
it's a dead end for many desirable features on embedded systems,
especially when managed remotely (and hence without an easy option to
access the SD card using another device in case things go wrong, for
example).
Let me explain:
* using a MSDOS/VFAT filesystem to store kernel(s) is problematic, as a
single corruption of the bootfs can render the system into a state
that it no longer boots at all. This makes dual-boot useless, or at
least very tedious to setup with then 2 independent boot partitions
to avoid the single point of failure on a "hot" block (the FAT index
of the boot partition, written every time a file is changed in
bootfs). And well: most targets even store the bootloader environment
in a file in that very same FAT filesystem, hence it cannot be used
to script a reliable dual-boot method (as loading the environment
itself will already fail if the filesystem is corrupted).
* loading the kernel uImage from bootfs and using rootfs inside an
additional partition means the bootloader can only validate the
kernel -- if rootfs is broken or corrupted, this can lead to a reboot
loop, which is often a quite costly thing to happen in terms of
hardware lifetime.
* imitating MBR-boot behavior with a FAT-formatted bootfs partition
(like IBM PC in the 80s and 90s) is just one of many choices on
embedded targets. There are much better options with modern U-Boot
(which is what we use and build from source for all targets booting
off SD cards), see examples in mediatek/mt7622 and mediatek/mt7623.
Hence rename the 'sdcard' feature to 'legacy-sdcard', and prefix
functions with 'legacy_sdcard_' instead of 'sdcard_'.
Tested-by: Stijn Tintel <stijn@linux-ipv6.be>
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Add a generic sdcard upgrade method instead of duplicating code in yet
another target, and add a feature flag to only install this upgrade
method in targets that set this flag. Copied from mvebu.
Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
Add new target feature 'dt-overlay' which makes DTC keep the symbol
names in the generated dtb.
Make sure additional DT overlay sources specified by the new device
variable DEVICE_DTS_OVERLAY get compiled together with the main DTS
(currently overlays got to be in the same folder). Let Build/fit pass
the generated DT overlay blobs to mkits.sh.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Instead of embedding the initrd cpio archive into the kernel, allow
for having an external ramdisk added to the FIT or uImage.
This is useful to overcome kernel size limitations present in many
stock bootloaders, as the ramdisk is then loaded seperately and doesn't
add to the kernel size. Hence we can have larger ramdisks to host ie.
installers with all binaries to flash included (or a web-based
firmware selector).
In terms of performance and total size the differences are neglectible.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Since 4ee3cf2b5a profiles with alternative vendor names may appear
multiple times in `tmp/.targetinfo` or `.targetinfo` (for
ImageBuilders).
The `target-metadata.pl` script adds these profiles then twice to
`PROFILE_NAMES` and the ImageBuilder show the profile twice when running
`make info`.
This patch removes duplicate profile IDs and only adds them once to
`.profiles.mk`.
Signed-off-by: Paul Spooren <mail@aparcar.org>
As the PWM has its own sub-system in the Linux kernel,
I think it should be handled in the same way as GPIO, RTC, PCI...
This patch introduces a specific feature flag "pwm" and the
"leds-pwm" kernel module as the first customer.
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
By specifying "BROKEN := 1" or "BROKEN := y" for a device, it will be
hidden (and deselected) by default. By that, it provides a stronger
option to "disable" a device beyond just using DEFAULT := n.
To make these devices visible, just enable the BROKEN option in
developer settings as already implemented for targets and packages.
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Allow overriding the default selection state for Devices, similar to
setting a default for packages.
E.g. by setting DEFAULT to n, they won't be selected by default anymore
when enabling all device in the multi device profile.
This allows preventing images being built by the default config for
known broken devices, devices without enough RAM/flash, or devices not
working with a certain kernel versions.
This does not prevent the devices from being manually selected or images
being built by the ImageBuilder. These devices often still have worth
with a reduced package-set, or as a device for regression testing, when
no better device is available.
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
If the target supports a newer kernel version that is not used by default
yet, it can be enabled with this option
Signed-off-by: Felix Fietkau <nbd@nbd.name>
ar71xx is in the process of being deprecated as a target accepting new
devices. The replacement target for the same hardware is DTS
based ath79.
Switch the default build target selection from ar71xx to ath79.
This is intended to encourage DTS takeup & support for ath79 and longer
term will also aid kernel upstream support.
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
Having image metadata (and signature) appended is a condition for
semi-automated sysupgrade, hence IB needs to be able to tell which
images will end up with metadata.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Without this change the code checked if the string was contained in the
feature option and not if the string matches the complete word. This only
removes the nand option from the omap24xx target, the other changes are
only removing options which were added twice.
Signed-off-by: Hauke Mehrtens <hauke.mehrtens@intel.com>
This can be used to tweak the buildbot behavior without having to change
buildbot's configuration.
It will also allow us to add more aggressive clean steps (e.g. on
toolchain changes), which would break developers' workflows if enable
by default.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
When selecting devices from the Target Devices menu, the brand choices
of naming makes it confusing to find particular devices by name, as the
sorting is case sensitve. AirTight came after ALFA, and devolo and
jjPlus both came after Zyxel.
This does _not_ apply to the Target Profile list, as that includes
"Default - all profiles" inside the profile list.
Signed-off-by: Karl Palsson <karlp@etactica.com>
TARGET_MULTI_PROFILE and TARGET_PER_DEVICE_ROOTFS get some help text to
try and clarify their behaviour.
Signed-off-by: Karl Palsson <karlp@etactica.com>
Add a new option to each device in multi-profile mode, allowing to provide
a list of packages to add or remove. In case of added packages, the user
must take care that these are selected to be built.
Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
9pfs is used by kvm to share files between host and guest,
add proper config option to enable it.
Signed-off-by: Matteo Croce <matteo.croce@canonical.com>
This patch adds support of Mikrotik yaffs2 filesystem image for kernel file
and tools/kernel2minor package.
We neede this to boot kernel through RouterBoot on new Mikrotik NOR flash devices.
Signed-off-by: Sergey Sergeev <adron@yapic.net>
