immortalwrt/target/linux
Pawel Dembicki e1d8a14cd0 ramips: mt7620: add kernel size for Jboot devices
Since few months multiple users reported problems with various JBoot
devices. [0][1][2][3] All of them was bricked.

On my Lava LR-25G001 it freezes with current snapshot:

CDW57CAM_003 Jboot B695
Giga Switch AR8327 init
AR8327/AR8337 id   ==> 0x1302
JRecovery Version R1.2 2014/04/01 18:25
SPI FLASH: MX25l12805d 16M
.
.
(freeze)

The kernel size is >2048k.

I built current master with minimal config and it boots well:

CDW57CAM_003 Jboot B695
Giga Switch AR8327 init
AR8327/AR8337 id   ==> 0x1302
JRecovery Version R1.2 2014/04/01 18:25
SPI FLASH: MX25l12805d 16M
.
...........................
Starting kernel @80000000...
[    0.000000] Linux version 5.4.124

Kernel size is <2048k.

Jboot bootloader isn't open source, so it's impossible to find
solution in code. It looks, that some buffer for kernel have 2MB size.

To avoid bricked devices, this commit introduces 2048k limit kernel
size for all jboot routers.

[0] https://bugs.openwrt.org/index.php?do=details&task_id=3539
[1] https://eko.one.pl/forum/viewtopic.php?pid=254344
[2] https://eko.one.pl/forum/viewtopic.php?id=20930
[3] https://eko.one.pl/forum/viewtopic.php?pid=241376#p241376

Signed-off-by: Pawel Dembicki <paweldembicki@gmail.com>
[remove Fixes:]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
2021-06-09 22:18:37 +02:00
..
apm821xx
arc770
archs38
armvirt
at91
ath25
ath79
bcm27xx
bcm47xx
bcm53xx
bcm63xx
bcm4908
bmips
gemini
generic
imx6
ipq40xx
ipq806x
ipq807x
kirkwood
lantiq
layerscape
malta
mediatek
mpc85xx
mvebu
mxs
octeon
octeontx
omap
oxnas
pistachio
ramips ramips: mt7620: add kernel size for Jboot devices 2021-06-09 22:18:37 +02:00
realtek
rockchip
sunxi
tegra
uml
x86
zynq
Makefile