XO1.5 Bringup

This page lists goals and plans for initial bringup of the XO 1.5 (CL1B) board.

Goals

• Embedded Controller and power distribution working
• Memory controller working and memory stable (memtest86)
• OLPC display working
• Keyboard/mouse working
• USB working
• SD memory cards working
• Boots Linux kernel from USB and SD card
• Audio input and output
• C2/C3/Suspend/resume from OFW

Non-goals

• Camera input (driver won't be ready in time)
• Power management from Linux
• Windows boot
• SDIO WLAN
• X

Personnel in Taiwan

• Wad, Richard, and Mitch from OLPC
• Gordon Chu (PM), Beckham Chen (EE), Danny Tsai (power), Gary Chiang (EE), Bryan Ma (firmware) from Quanta
• Harald Welte and BIOS/memory controller expert from Via

Tools

• Cheetah SPI programmer qty 1 (Richard)
• Dediprog SPI programmer qty 1+ (Quanta)
• Artec LPC dongle (FLASH + port 80) qty 3 (Mitch 1, Richard 2)
• Cleverscope qty 1 (Mitch)
• PROMjet SPI FLASH emulator qty 1 (Mitch)
• OLPC serial port dongles + cables qty 10 (Mitch 2, Richard 2, wad 6)
• High speed, four channel oscilloscope (Quanta)

Sequence of Events

• Richard arrives several days before bringup, to work together with Bryan Ma on final EC code.
• Wad, Mitch, and the boards arrive and bringup starts.
  • Get the EC running, including serial port
  • Basic power supply operation and sequencing
  • Main CPU booting of Open Firmware
• Via becomes involved (VX855 support)
  • Serial port
  • Keyboard/Touchpad
  • Bring up memory controller
  • VGA Video output
  • Start memory stability tests
  • SD card
  • USB
• At this point, OFW is generally functional for hardware debugging.
• Harald Welte arrives, and the team splits into two: Hardware and Linux

Hardware

• Continues to work on either USB or SD if needed
• DCON and OLPC display
• RTC
• Audio
• Power management from OFW
• Lid switch, E-Book mode switch, front panel buttons

Linux

After initial boot, this is mainly driver testing of hardware as functionality is confirmed with OFW.

• Initial boot
• USB
• SD
• Video
• DCON and OLPC display
• Audio