HelenOS on Neo FreeRunner

Information pertaining to porting HelenOS to Neo FreeRunner smartphone (alias GTA02) which was developed by the ​Openmoko project.

Status

Supported in development version. No support in a stable release (as of 0.4.2). The system boots to the command line. All kernel tests pass. Kernel can write to serial debug console and to the display. Userspace fb server can use the display. There is no input device available.

Resources

External resources:

• ​Openmoko Wiki
• ​Openmoko Git source code repos (U-Boot, Qi, etc.)
• ​Neo FreeRunner Hardware
• ​Samsung S3C2442B Processor Datasheet
• ​Samsung S3C2440A Processor user manual Very similar to the S3C2442B
• ​FreeRunner memory map
• ​Smedia Glamo 3362 (Video chip and microSD reader)

Internal resources:

• U-Boot Bootloader
• Programming Neo FreeRunner LEDs
• Video (Glamo)

Memory system

• The memory system is configured to little endian mode

S3C2442B Processor

• The core is an ARM920T (ARMv4T architecture)