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&lt;code bash&gt;
pacman -S arm-none-eabi-gcc uboot-tools
git clone https://github.com/Sekilsgs2/i9100_kernel_mainline_port.git
cd i9100_kernel_mainline_port
export ARCH=arm
export CROSS_COMPILE=arm-none-eabi-
make i9100_defconfig
make -j6
sh mk.sh
sh mod.sh
# heimdall flash --KERNEL boot.img
&lt;/code&gt;
  * xda method flashing kernel: https://forum.xda-developers.com/galaxy-s2/general/uboot-bootloader-true-multiboot-t1680898
  * postmarketos aports https://gitlab.com/postmarketOS/pmaports/tree/master/device/linux-samsung-i9100
  * http://postmarketos.brixit.nl/postmarketos/master/armhf/linux-samsung-i9100-3.0.101-r13.apk

&lt;code bash&gt;
git clone git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git
cd linux-stable
git checkout tags/5.4.5
wget &quot;https://raw.githubusercontent.com/Sekilsgs2/i9100_kernel_mainline_port/6c02dad36b8a76a6f50d26ff1b9abb0d30aacbc9/arch/arm/configs/i9100_defconfig&quot; -O arch/arm/configs/i9100_defconfig
wget &quot;https://raw.githubusercontent.com/Sekilsgs2/i9100_kernel_mainline_port/master/arch/arm/boot/dts/exynos4210-i9100.dts&quot; -O arch/arm/boot/dts/exynos4210-i9100.dts
wget &quot;https://raw.githubusercontent.com/Sekilsgs2/i9100_kernel_mainline_port/master/arch/arm/boot/dts/exynos4210.dtsi&quot; -O arch/arm/boot/dts/exynos4210.dtsi
# patch file arch/arm/boot/dts/Makefile
export ARCH=arm
export CROSS_COMPILE=arm-none-eabi-
make i9100_defconfig
make -j6
make dtbs
cat arch/arm/boot/zImage arch/arm/boot/dts/exynos4210-i9100.dtb &gt; zimage
mkimage -A arm -O linux -T kernel -C none -a 0x40008000 -e 0x40008000 -n Linux-android-sucks -d zimage boot.img
make modules_install INSTALL_MOD_PATH=../
&lt;/code&gt;
  * archlinuxarm https://archlinuxarm.org/forum/viewtopic.php?f=27&amp;t=5284
  * https://github.com/Sekilsgs2/i9100_kernel_mainline_port/issues/1
postmarketos binaries chroot
&lt;code&gt;
gio: ELF 32-bit LSB pie executable, ARM, EABI5 version 1 (SYSV), dynamically linked, interpreter /lib/ld-musl-armhf.so.1, stripped
&lt;/code&gt;
archlinuxarm binary http://os.archlinuxarm.org/os/ArchLinuxARM-odroid-x-latest.tar.gz
&lt;code&gt;
gio: ELF 32-bit LSB pie executable, ARM, EABI5 version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-armhf.so.3, BuildID[sha1]=6c5eae3cb78debe406df57f20e99c2462f764c85, for GNU/Linux 3.2.0, stripped
&lt;/code&gt;
  * rootfs armv7?
&lt;code bash&gt;
pacman -U dtc-1.4.1-1-x86_64.pkg.tar.xz # downgrade to older version
pacman -S gcc-arm-none-eabi-bin-49
git clone https://github.com/Sekilsgs2/i9100-uboot.git
git clone https://github.com/Sekilsgs2/toolchain_for_old_uboot.git
cd i9100-uboot
export PATH=&quot;/usr/local/arm/gcc-arm-none-eabi-4_9-2015q3/bin:$PATH&quot;
# set -gx PATH /usr/local/arm/gcc-arm-none-eabi-4_9-2015q3/bin $PATH
export ARCH=arm
export CROSS_COMPILE=arm-none-eabi-
make galaxys2_config
make galaxys2
# heimdall flash --kernel u-boot.bin
&lt;/code&gt;
  * bug report using mainline kernel galaxy s2 https://github.com/Sekilsgs2/i9100_kernel_mainline_port/issues/1#issuecomment-565706956
  * xda post mainline kernel samsun s2 https://forum.xda-developers.com/galaxy-s2/general/port-run-mainline-linux-kernel-t3901190
  * uboot 9100 sources
    * https://github.com/Talustus/i9100-uboot
    * https://github.com/astarasikov
&lt;code bash&gt;
heimdall flash --KERNEL u-boot.bin
heimdall flash --RECOVERY uImage
&lt;/code&gt;
&lt;code&gt;
 Well, to boot the custom kernel, you need to put it to the &quot;/sdcard/boot/vmlinux.uimg&quot;, not to the external sd card. The rootfs should be put to the second partition of the external microSD (mmcblk1p2), but you can recompile the kernel and put any cmline there.
&lt;/code&gt;
convert zImage into uImage
&lt;code bash&gt;
mkimage -A arm -O linux -T kernel -C none -a 0x40008000 -e 0x40008000 -n Linux-android-sucks -d zImage uImage
&lt;/code&gt;
u-boot trats https://forum.xda-developers.com/galaxy-s2/general/boot-sources-i9100-t1694523
&lt;code bash&gt;
git clone git://git.denx.de/u-boot.git
cd u-boot
export ARCH=arm
export CROSS_COMPILE=arm-none-eabi-
make trats_config
make all
&lt;/code&gt;
===== legacy uboot (working) ===== <code bash> pacman -U dtc-1.4.1-1-x86_64.pkg.tar.xz # downgrade to older version pacman -S gcc-arm-none-eabi-bin-49 git clone https://github.com/Sekilsgs2/i9100-uboot.git git clone https://github.com/Sekilsgs2/toolchain_for_old_uboot.git cd i9100-uboot export PATH="/usr/local/arm/gcc-arm-none-eabi-4_9-2015q3/bin:$PATH" # set -gx PATH /usr/local/arm/gcc-arm-none-eabi-4_9-2015q3/bin $PATH export ARCH=arm export CROSS_COMPILE=arm-none-eabi- make galaxys2_config make galaxys2 heimdall flash --KERNEL u-boot.bin </code>
===== legacy kernel 4.2 (partially working) =====
&lt;code bash&gt;
git clone https://github.com/Sekilsgs2/i9100_kernel_mainline_port.git
cd i9100_kernel_mainline_port
export ARCH=arm
export CROSS_COMPILE=arm-none-eabi-
make i9100_defconfig
make -j6
cat arch/arm/boot/zImage arch/arm/boot/dts/exynos4210-i9100.dtb &gt; zimage
mkimage -A arm -O linux -T kernel -C none -a 0x40008000 -e 0x40008000 -n Linux-android-sucks -d zimage boot.img
make modules_install INSTALL_MOD_PATH=../
heimdall flash --RECOVERY boot.img
&lt;/code&gt;
===== prepare rootfs =====
&lt;code bash&gt;
heimdall flash --FACTORYFS ...
&lt;/code&gt;
  * http://os.archlinuxarm.org/os/ArchLinuxARM-odroid-latest.tar.gz
  * http://de4.mirror.archlinuxarm.org/os/ArchLinuxARM-armv7-latest.tar.gz
try
&lt;code bash&gt;
&quot;console=ttyS0,115200n8 root=UUID=e139ce78-9841-40fe-8823-96a304a09859 rootwait ro no_console_suspend vdaccfg=0xa000 logo=osd&quot;
&lt;/code&gt;
&lt;code&gt;
setenv loadaddr 0x70800000 
setenv bootargs_mmc 'setenv bootargs ${bootargs} root=/dev/mmcblk0p1 ip=none rootfstype=ext4'
setenv bootcmd_mmc 'run bootargs_base bootargs_mmc; mmc dev 0; mmc read ${loadaddr} 0x800 0x1800; bootm'
setenv bootcmd 'run bootcmd_mmc'
saveenv
&lt;/code&gt;
&lt;code&gt;
bootpart=1:1
devtype=mmc
bootdir=
bootfile=zImage
bootpartition=mmcblk1p2
set_bootargs=setenv bootargs console=ttyO0,115200n8 root=/dev/${bootpartition} rw rootfstype=ext4 rootwait
uenvcmd=run set_bootargs;run loadimage;run loadfdt;printenv bootargs;bootz ${loadaddr} - ${fdtaddr}
&lt;/code&gt;
Next steps
  * Move everything to local and make bash script flash.sh
    * https://github.com/postmarketOS/pmbootstrap/blob/master/aports/main/heimdall/heimdall_wait_for_device.sh
  * try with mmcblk0p11 https://github.com/Sekilsgs2/i9100_kernel_mainline_port/issues/1#issuecomment-566525856
  * uboot debugging, if mmc rescan https://archlinuxarm.org/forum/viewtopic.php?f=33&amp;t=8292#p44462
  * check archlinuxarm bootparams for uboot
  * make serial access
&lt;code&gt;
CONFIG_USB_ETH=y
CONFIG_USB_ETH_RNDIS=y
CONFIG_USB_ETH_EEM=y
&lt;/code&gt;
&lt;file - /etc/systemd/network/usb0.network&gt;
[Match]
Name=usb0

[Network]
DNS=192.168.2.1
IPv6PrivacyExtensions=true

[Address]
Address=192.168.7.18/30

[Route]
Gateway=192.168.7.17
&lt;/file&gt;
  * https://wiki.postmarketos.org/wiki/Kernel_configuration#CONFIG_USB_ETH
  * BCM4330 https://wiki.postmarketos.org/wiki/Samsung_Galaxy_SII_(samsung-i9100)#WiFi_.2F_Bluetooth_.2F_FM_radio
  * https://archlinuxarm.org/packages/armv7h/firmware-brcm43xx
  * micro-usb-usb-dongle keyboard :D
  * https://raw.githubusercontent.com/TheMuppets/proprietary_vendor_samsung/cm-14.1/i9100/proprietary/system/etc/wifi/nvram_net.txt
  * https://github.com/respeaker/rkbin/raw/master/firmware/bluetooth/BCM4330B1.hcd
  * http://mirror.archlinuxarm.org/aarch64/core/wireless-regdb-2019.06.03-2-any.pkg.tar.xz
  * https://github.com/TheMuppets/proprietary_vendor_samsung/tree/lineage-17.0/i9100/proprietary/system/etc/wifi
  * https://github.com/TheMuppets/proprietary_vendor_samsung/raw/lineage-17.0/i9100/proprietary/system/etc/wifi/bcmdhd_sta.bin as brcmfmac4330-sdio.bin
&lt;code bash&gt;
pacman-key --init
pacman-key --populate archlinuxarm
&lt;/code&gt;
  * create package linux-firmware-samsung-i9100 or something
  * use mainline kernel supplied by archlinuxarm, using dtb kernel boot args
  * document everything we have so far
  * iwd &amp; sshd
&lt;code bash&gt;
systemctl enable --now iwd systemd-networkd systemd-resolved sshd
ln -sf /run/systemd/resolve/stub-resolv.conf /etc/resolv.conf
&lt;/code&gt;
&lt;file - /etc/systemd/network/wlan0.network&gt;
[Match]
Name=&lt; name of your wifi interface or * for every interface &gt;

[Network]
DHCP=yes
IPv6PrivacyExtensions=true
&lt;/file&gt;
&lt;code&gt;
RFKILL=y
CONFIG_KEY_DH_OPERATIONS=y
&lt;/code&gt;
&lt;code bash&gt;
dd of=archlinuxarm.img bs=1 seek=10G count=0
mkfs.ext4 -F archlinuxarm.img
mount archlinuxarm.img arm-chroot
pacman -S qemu-arm-static
systemctl start systemd-binfmt
wget &quot;http://de4.mirror.archlinuxarm.org/os/ArchLinuxARM-armv7-latest.tar.gz&quot;
bsdtar -xpf ArchLinuxARM-armv7-latest.tar.gz -C arm-chroot
arch-chroot arm-chroot
# pacman-key --init
# pacman-key --populate archlinuxarm
# pacman -Syu base-devel
&lt;/code&gt;
&lt;code bash&gt;
pacman -S phosh gnome-session gnome-shell
&lt;/code&gt;
  * check patched files by Sekilsgs2
  * as i said before: start just phoc to get that running first: e.g. phoc -E 'weston-terminal' once that works you can then start phosh from that terminal and once that works bring gnome-session into the mix. that allows us to debug all parts independently.
  * @lcd dts: flip-horizontal;, flip-vertical;

===== u-boot porting =====
  * https://github.com/u-boot/u-boot/releases?after=v2013.01-rc1
  * https://github.com/u-boot/u-boot/archive/v2012.04.tar.gz
instructions for archlinux
&lt;code bash&gt;
git clone https://git.project-insanity.org/onny/i9100-uboot.git
pacman -U i9100-uboot/dtc-1.4.1-1-x86_64.pkg.tar.xz  i9100-uboot/gcc-arm-none-eabi-bin-49-4.9_2015_q3_update-3-x86_64.pkg.tar.xz
wget &quot;https://github.com/u-boot/u-boot/archive/v2012.04.tar.gz&quot;
tar xvf v2012.04.tar.gz
cd u-boot-2012.04
patch -p1 -i ../i9100-uboot/i9100-uboot-2012.04.patch
patch -p1 -i ../i9100-uboot/i9100-uboot-2012.04-bootarchlinux.patch
export PATH=&quot;/usr/local/arm/gcc-arm-none-eabi-4_9-2015q3/bin:$PATH&quot;
export ARCH=arm
export CROSS_COMPILE=arm-none-eabi-
make galaxys2
../i9100-uboot/flash.sh
&lt;/code&gt;
  * https://github.com/u-boot/u-boot/archive/v2013.04.tar.gz
&lt;code&gt;
boards.cfg
drivers/misc/Makefile
drivers/mmc/s5p_mmc.c (no file)
&lt;/code&gt;
interessante datei in uboot upstream: include/configs/exynos5250-dt.h
  * modifiziert
    * galaxys2.c
    * galaxys2.h
https://github.com/u-boot/u-boot/commits/master?after=d16e18ca6c4d81ac142acd529b1acb55b0c96dfc+45035
&lt;code&gt;
git checkout 51bdad67cb6738c5d0e78084cf3e3baa216f4d2f
&lt;/code&gt;