TrekStor Surftab wintron 7.0 port

This adds support for the surftab Wintron 7.0. This device is x86_64 and has a 32-bit UEFI, so I need to install 32-bit grub (AFAIK it's the only bootloader capable of loading a 64-bit kernel from 32-bit).

Some thoughts:

• Maybe the grub setup should get in its own package to be reused for similar devices?
• Booting from USB works; from SD the initramfs cam't find the boot partition. Is there a module missing? I just added modules till it worked. Now there are likely more than needed.
• The screen brightness control doesn't work (also see here and here). How can I make these configurations build-in?
• Should I use linux-vanilla or linux-postmarketos-stable ?

added 1 commit

• cf01564b - surftab-wintron7.0: add device support

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By Nick Reitemeyer on 2019-03-26T06:34:56

The code looks good, but the grub stuff really needs to be changed. That's what I recommend to look into next.

Booting from USB works; from SD the initramfs cam't find the boot partition. Is there a module missing?

You can try to debug this with the debug-shell hook, see: https://wiki.postmarketos.org/wiki/Inspecting_the_initramfs

• The screen brightness control doesn't work (also see here and here). How can I make these configurations build-in?

This depends on the kernel you want to use. In general, edit the kernel config.

• Should I use linux-vanilla or linux-postmarketos-stable ?

If you need changes like the above, then it is probably easier to use linux-postmarketos-stable. You can edit the pmOS kernel config with pmbootstrap kconfig edit postmarketos-stable.

Have you seen this device? https://wiki.postmarketos.org/wiki/Generic_x64_uefi

I know that it doesn't need a 32x bootloader, but maybe it is helpful to look at how everything is done in that device package.

Great work @nickre!

By Oliver Smith on 2019-03-26T17:29:14

added 2 commits

• 1bc2fce4 - surftab-wintron7.0: Use commit as firmware source
• 8ba78a94 - surftab-wintron7.0: Add more initramfs modules and edit touchscreen configuration

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By Nick Reitemeyer on 2019-03-26T18:34:18

changed the description

By Nick Reitemeyer on 2019-03-26T18:44:01

mentioned in merge request pmbootstrap!1771 (merged)

By Nick Reitemeyer on 2019-03-28T19:31:40

added 3 commits

• a6640268 - surftab-wintron7.0: first try to seperate grub setup into own package
• 2c4516cf - grub-x86: Enable strict mode
• dd2dd374 - grub-x86: Change version

Compare with previous version

By Nick Reitemeyer on 2019-03-28T19:32:09

I refactored the grub stuff. Now depends on pmbootstrap!1771 (merged).

By Nick Reitemeyer on 2019-03-28T19:32:20

added 17 commits

• dd2dd374...9bf79483 - 16 commits from branch postmarketOS:master
• 39971739 - surftab-wintron7.0: new device (TrekStor Surftab wintron 7.0) (!290 (merged))

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By Oliver Smith on 2019-04-04T18:00:12

approved this merge request

By Oliver Smith on 2019-04-04T18:00:33

resolved all discussions

By Oliver Smith on 2019-04-04T18:01:06

Excellent, let's ship this!

By Oliver Smith on 2019-04-04T18:01:36

enabled an automatic merge when the pipeline for 39971739 succeeds

By Oliver Smith on 2019-04-04T18:01:40

merged

By Oliver Smith on 2019-04-04T18:02:21

mentioned in commit 39971739

By Nick Reitemeyer on 2019-05-06T13:59:55