content/projects/pxa1908/index.md

   1 ---
   2 title: "Mainline Linux on Marvell PXA1908"
   3 date: 2023-09-10T22:23:48+02:00
   4 ---
   5 The Marvell PXA1908 was Marvell's first ARM64 SoC released sometime around 2014
   6 or 2015. The SoC is used in some of Samsung's entry level 2015 phones such as
   7 the [Core Prime VE
   8 LTE](https://wiki.postmarketos.org/wiki/Samsung_Galaxy_Core_Prime_VE_LTE_(samsung-coreprimevelte))
   9 and the [Xcover 3
  10 LTE](https://wiki.postmarketos.org/wiki/Samsung_Galaxy_Xcover_3_(samsung-xcover3lte)).
  11 The PXA1908 currently has out-of-tree support for booting mainline Linux.
  12
  13 ## Links
  14
  15 * [Latest version of patchset
  16   (RESEND v10)](https://lore.kernel.org/20240618-pxa1908-lkml-v10-0-754e5ece9078@skole.hr)
  17 * [Main Git
  18   repository](https://gitlab.com/LegoLivesMatter/linux/-/tree/mainline)
  19 * [postmarketOS SoC page](https://wiki.postmarketos.org/wiki/Marvell_PXA1908)
  20 * [XDA thread](https://xdaforums.com/t/rom-linux-sm-g361f-postmarketos.4679273/)
  21
  22 ## Building outside pmbootstrap
  23
  24 1. Clone and compile [pxa-mkbootimg](https://github.com/osm0sis/pxa-mkbootimg)
  25 1. Clone repository
  26 1. Checkout `mainline`
  27 1. Get [kernel
  28    config](https://gitlab.com/postmarketOS/pmaports/-/raw/master/device/testing/linux-samsung-coreprimevelte/config-samsung-coreprimevelte.aarch64)
  29    from pmaports
  30 1. `make` the kernel and create a boot.img using the below script
  31
  32 ## Script for creating boot.img
  33 Written to be run from `out/arch/arm64/boot`. Adapt to your needs.
  34
  35 ```sh
  36 #!/bin/sh
  37
  38 mkimage -A arm64 -C gzip -a 0x1000000 -e 0x1000000 -n "pxa1928dkb linux" -d Image.gz uImage
  39 ~/code/pxa-mkbootimg/pxa1908-dtbTool -p ../../../scripts/dtc/ -s 2048 -o dt.img dts/marvell/
  40 ~/code/pxa-mkbootimg/pxa-mkbootimg \
  41     --kernel uImage \
  42     --base 0x10000000 \
  43     --ramdisk /tmp/postmarketOS-export/initramfs \
  44     --ramdisk_offset 0x1000000 \
  45     --pagesize 2048 \
  46     --dt dt.img \
  47     --second_offset 0xf00000 \
  48     --tags_offset 0x100 \
  49     -o boot.img
  50 ```
  51
  52 ## Todo
  53 Moved [here](https://gitlab.com/LegoLivesMatter/linux/-/issues/1)