Samsung Z1 (samsung-kiran)
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 |
Flashing |
No data |
---|---|
USB Networking |
Works |
Internal storage |
No data |
SD card |
No data |
Battery |
No data |
Screen |
No data |
Touchscreen |
Works |
Multimedia | |
3D Acceleration |
No data |
Audio |
No data |
Camera |
No data |
Camera Flash |
No data |
Connectivity | |
WiFi |
Works |
Bluetooth |
No data |
GPS |
No data |
Modem | |
Calls |
No data |
SMS |
No data |
Mobile data |
No data |
Miscellaneous | |
FDE |
No data |
USB OTG |
No data |
HDMI/DP |
No data |
Sensors | |
Accelerometer |
No data |
Haptics |
No data |
Barometer |
No data |
Contributors
- peremen
Maintainer(s)
Users owning this device
How to enter flash mode
Similar as Samsung's Android counterparts:
- Hold + + buttons to enter flash mode.
- Hold + + 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.
Booting non-stock kernel image will trip the KNOX bit, and show a red exclamation mark on the top left of boot screen.
The framebuffer access is not available, debugging only shows "fbsplash: mmap: invalid argument". This further prevents any usage of GUI applications.
Components
- UART: 1.8 V, See Serial debugging:Cable schematics#Samsung_Galaxy_S7_and_S5. 150K Ohm resistor enables serial console.
- Wi-Fi: Broadcom BCM4343S, requires firmware (from either Tizen or any other)
- GPS: Broadcom BCM47520
- MUIC: Richtek SM5504
- Charger: Richtek SM5701
See also
- Kernel source (mirrored from Samsung OSS Center)
- Tool to generate dzImage