Due to issues surrounding the implementation of the vendor BMT/BBT
on Airoha, upstream ATF + uboot has switched to UBI flash partitions.
However, some devices shipped on this platform are bootloader locked,
and thus it is impossible to replace ATF + uboot.
During testing for the Gemtek W1700K (#17869), sysupgrades from Linux
(which is unaware of the underlying BMT/BBT) would occasionally write
data into blocks which were remapped by the vendor uboot when it was
read on the following reboot, causing a soft brick.
An acceptable workaround [1],[2] was discussed where an intermediate
uboot would be written by the vendor uboot (which is aware of Airoha
BMT/BBT). This chainloader would then ignore the regions of flash
used by the vendor uboot, and store all relevant data inside of UBI.
UBI would then be used to handle bad block management. As the vendor
ATF + uboot do not read or interact with the UBI region, we would avoid
unwanted remaps from BMT/BBT.
This commit introduces support for building such a chainloader, by
packaging u-boot and DTS into a FIT image; to be flashed like a kernel.
Configuration for the Gemtek W1700K is provided as an example of how the
chainloader is used.
[1] https://github.com/openwrt/openwrt/pull/17869#discussion_r2836066746
[2] https://github.com/openwrt/openwrt/pull/17869#discussion_r2838395671
Signed-off-by: Kenneth Kasilag <kenneth@kasilag.me>
[ move FIP_COMPRESS to Build/Compile, wrap some long lines ]
Link: https://github.com/openwrt/openwrt/pull/22151
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
(cherry picked from commit 442e67d31f)
Link: https://github.com/openwrt/openwrt/pull/22294
Signed-off-by: Robert Marko <robimarko@gmail.com>
Similar to e92b153e99 ("mediatek: introduce KERNEL_LOADADDR to Device/Default template"),
let's move the default loadaddr to Device/Default.
What's more, use 0x80200000 instead of the SDK default value 0x80088000
to avoid the following error which may overwrite TZ memory and cause crash:
[ 0.000000] [Firmware Bug]: Kernel image misaligned at boot, please fix your bootloader!
[ 0.000000] OF: reserved mem: Reserved memory: failed to reserve memory for node 'atf@80000000': base 0x0000000080000000, size 2 MiB
Signed-off-by: Ziyang Huang <hzyitc@outlook.com>
[ fix spelling mistake ]
Link: https://github.com/openwrt/openwrt/pull/20470
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Pack the BL2 and BL31+U-Boot artifacts as Airoha AN7581 is currently
supported in upstream U-Boot and bootloader files can be used for
unfused boards.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
All devices under airoha use dts directory under the target,
so update the default DEVICE_DTS_DIR. Also set the default
DEVICE_DTS based on the SoC name for non-dev boards.
Signed-off-by: Chukun Pan <amadeus@jmu.edu.cn>
Link: https://github.com/openwrt/openwrt/pull/20190
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
The Airoha EN7581 got renamed to AN7581 due to move from Econet to
Airoha.
To save on compatibility, use both compatible for the device.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
