hyphop

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hyphop

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hyphop

hello world

hyphop

hello world

hyphop

hello

hyphop

How-to prepare oowow-image with meta information

# setup
IMAGE=CoreELEC-Amlogic-ne.arm-20.0-Nexus_nightly_latest-Khadas_VIM4.img.gz

# download original image
wget https://relkai.coreelec.org/oowow/$IMG

# unpack and rename to common filename style

hyphop

From bb92b64da8e0b3673cbf907a0bef4da384b03909 Mon Sep 17 00:00:00 2001
From: Artem Lapkin <[email protected]>
Date: Thu, 30 Dec 2021 12:35:48 +0800
Subject: [PATCH] config/boards/VIM4.conf: user can define UBOOT_DEFCONFIG
 UBOOT_GIT_BRANCH LINUX_GIT_BRANCH

Signed-off-by: Artem Lapkin <[email protected]>
---
 config/boards/VIM4.conf | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

hyphop

kvim4# mw 1000 0 aa; load mmc 0 1000 /extlinux/extlinux.conf; md 1000 aa
556 bytes read in 3 ms (180.7 KiB/s)
00001000: 7b92369b c3b5956b f63e5948 7c99cef0    .6.{k...HY>....|
00001010: 14e85752 570a444c 540c2f93 376ac390    RW..LD.W./.T..j7
00001020: c92e0ee2 534b6141 0a7151c6 ccf93547    ....AaKS.Qq.G5..
00001030: cbeaa320 2299eb7f cd775e52 ff535f64     ......"R^w.d_S.
00001040: c55ba374 df591f2e d918832c a1706e8c    t.[...Y.,....np.
00001050: c6103652 c80d3461 c0f407d8 1d380da4    R6..a4........8.
00001060: 2cb9b5c6 2ef47e31 2ceb751a c0a560e4    ...,1~...u.,.`..
00001070: c4db67f8 b74a43dd c4d1829b b74a43dd    .g...CJ......CJ.

hyphop

cd /boot/dtb
cp kvim3l_linux.dtb kvim3l_linux.dtb.org
dtc -Idtb kvim3l_linux.dtb > kvim3l_linux.dts
dtc -Idtb kvim3l_linux.dtb > kvim3l_linux.dts.org
# need to change this node aml-audio-card,dai-link@0 / codec 
# need only output i2s
# grep -B19 -A4 "sound-dai = <0x71 0x71 0x73>;" kvim3l_linux.dts
sed "s/sound-dai = <0x71 0x71 0x73>;/sound-dai = <0x71>;/" kvim3l_linux.dts.org > kvim3l_linux.dts
dtc -Odtb kvim3l_linux.dts > kvim3l_linux.dtb
# DONE

hyphop

xze - advanced xz packer (suitable for mt decompression + padding + meta)

• https://github.com/khadas/krescue/blob/master/tools/xze
• https://raw.githubusercontent.com/khadas/krescue/master/tools/xze

This script just simple bash script, for demonstrate basic ideas realisation. I thinks its will be useful recommendations for all distros which use xz/lzma image compression

Why ?