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Samsung Z1 (samsung-kiran)

From postmarketOS Wiki
This device is marked as not booting.
Samsung Z1
Manufacturer Samsung
Name Z1
Codename samsung-kiran
Released 2015
Hardware
Chipset Spreadtrum SC7727S
CPU 2x ARM Cortex-A7
GPU Mali-400
Display 480x800 TFT
Storage 4 GB
Memory 768 MB
Architecture armv7
Software
Original software Tizen 2.4.0 (Magnolia)
postmarketOS
Category testing
Pre-built images no
Mainline no
postmarketOS kernel 3.10.17


Contributors

  • peremen

Maintainer(s)

Users owning this device

How to enter flash mode

Similar as Samsung's Android counterparts:

  • Hold Power + Home + Volume Down buttons to enter flash mode.
  • Hold Power + Home + Volume Up buttons to enter recovery mode.

Installation/Problems

Technically similar as Samsung's Android counterparts, however, there are some caveats. The stock Tizen boot image uses dzImage, basically vmlinuz + Spreadtrum dtb binary (can generate using dtbtool-sprd) with custom header. Because Tizen kernel does not enable initramfs, and S-BOOT seems to lack support of it, usage of isorec is required. Booting using dzImage generated during pmbootstrap + Tizen rootfs boots but there is no display with this combination.

The kernel does not completely boot yet.

Building downstream kernel using GCC 10 does not boot, you need to use GCC 4. Booting non-stock kernel image will trip the KNOX bit, and show a red exclamation mark on the top left of boot screen.

Components

See also