Hi Szabolcs,
Op zondag 19 april 2020 om 20u49 schreef Szabolcs Hubai
<szab...@gmail.com>:
This device has trouble extracting big kernel from flash,
and supports LZMA compressed kernels only.
Using OpenWrt kernel loader saves us 64 KB compared to the dictionary
size limiting workaround.
Factory image sizes (commit: 5f126c541a74) with "CONFIG_ALL_KMODS=y":
- original ("-d23", default): 4784188 bytes, LZMA ERROR 1
- with "-d19": 4915260, LZMA ERROR 1
- with "-d18": 4915260, diff to original: +128 KB
- with "-d17": 4980796, diff to original: +192 KB
- with this patch: 4849724, diff to original: +64 KB
To save some CPU cycle, use minimal compression ("-a0") for the LZMA
compressed uImage.
The most robust solution would use a different loader,
which reads the compressed kernel directly from the flash.
See the thread at [0] for more details!
Thanks for giving the DIR-860L some love. I'd like to test (in fact I
already
did with your previous patches) and hook up serial, because first boot
will
work but any reboot (whether I change settings or not) will just give
me a
blinking orange LED. Like clockwork.
Would you happen to have any pointers (or pictures) on how to open the
case?
I have unscrewed the bottom but there seem to be latches on the inside
(judging
from the FCC pictures) and I am unable to pry it open.
Thanks and sorry for the topic hijack :-).
Stijn
[0]
http://lists.infradead.org/pipermail/openwrt-devel/2020-April/022926.html
Signed-off-by: Szabolcs Hubai <szab...@gmail.com>
---
target/linux/ramips/image/mt7621.mk | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/target/linux/ramips/image/mt7621.mk
b/target/linux/ramips/image/mt7621.mk
index aa6836d50a..e954f730da 100644
--- a/target/linux/ramips/image/mt7621.mk
+++ b/target/linux/ramips/image/mt7621.mk
@@ -218,7 +218,9 @@ define Device/dlink_dir-860l-b1
$(Device/seama)
BLOCKSIZE := 64k
SEAMA_SIGNATURE := wrgac13_dlink.2013gui_dir860lb
- KERNEL := kernel-bin | append-dtb | relocate-kernel | lzma |
uImage lzma
+ LOADER_TYPE := bin
+ KERNEL := kernel-bin | append-dtb | lzma | loader-kernel | \
+ relocate-kernel | lzma -a0 | uImage lzma
IMAGE_SIZE := 16064k
DEVICE_VENDOR := D-Link
DEVICE_MODEL := DIR-860L
--
2.17.1
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