XO1.75 Bringup
This page lists goals and plans for initial bringup of the XO 1.75 A1 motherboard, the first prototype of the XO-1.75 Laptop.
Status
Note that a check in any one of the two columns is generally sufficient to prove that the hardware works.
| Subsystem | OFW | Linux | Notes/Reference |
|---|---|---|---|
| CPU Boot | |||
| Serial port | |||
| PS/2 KB & Touchpad | XO_1.75_HOST_to_EC_Protocol | ||
| USB | |||
| SD (Int/Ext) | |||
| DCON/Display | |||
| Audio playback (Int/Ext) | |||
| Audio recording (Int/Ext) | |||
| SDIO WLAN | |||
| Battery charging | |||
| Camera | |||
| Xorg |
Goals
The goal of a A-phase board bring-up is get a small number of boards to an acceptable state of functionality. At this point, a larger number of boards are modified to match and distributed for both extended testing of basic functionality (esp. memory stability) and development of software to access further functionality.
The following are the goals of this bringup:
- EC code booting and controlling the power sequencing properly
- CPU booting Linux on top of OFW
- Reliable memory and internal SD operation from OFW and Linux
- Reliable use of USB ports from OFW
- Support for the display and keyboard from OFW and Linux
Non-goals
We can go home even if these aren't working
- Proper operation of audio interface
- Proper operation of the wireless LAN
- Proper operation of the battery charging subsystem
- Camera
- X under Linux
Personnel in Taiwan
- Wad (EE), Gary Chiang (EE), Richard (EC/OFW), Mitch (OFW), Paul (EC/Linux), Lennert (Linux) and Chris (Linux) from OLPC
- Mars (PM), Eddie (PM), Justin (EE), Beckham Chen (EE), Bryan Ma (EC) from Quanta R&D
Tools
- +3.3V SPI FLASH programmers - preferably clip-on - qty 3 (Mitch will bring one clip)
- +3.3V/+1.8V SPI FLASH programmers (2 purchased, Gary to obtain)
- Marvell Debug dongles - qty 3 or more (Richard [1] and Mitch [1] to carry)
- Marvell JTAG box - qty 3 (Richard [1] and Mitch [1] to carry)
- Does the eXtreme Debugger software work under Linux or Wine? If not, we may need another Windows system (in addition to Mitch's laptop) to run it. Perhaps we can borrow one from Quanta - or maybe we could try running it under Windows on an XO, or in an emulator on a Linux laptop.
- XP for XO SD cards (Marvell tools only supported under XP)
- XO-1.5 (for programming and barter --- wad [2] and Richard [1] to carry)
- Screen, keyboard and touchpad, battery cabling, microphones, speakers, cameras (wad to carry)
- +1.8V capable WLAN cards (wad [3])
- Serial adapters (wad [6])
- SD cards, USB sticks (wad to carry)
- Access Point (Richard to carry)
- Power strips (wad [2] to carry)
- Needle-probed voltmeter (wad)
- Serial connectors and SPI headers (wad)
Sequence of Events
- Oct. 15, 2010 - A1 boards are SMT assembled in Shanghai
- Oct. 17/18 - EE/EC/OFW Team arrives in Taipei
- Oct. 18 - Boards arrive and bringup starts
- Oct. 20 - First day at Quanta for Mitch
- Oct. 21 - Linux team hopefully has something to work with
- Oct. 27 - Lennert leaves, perhaps (CELF-E conference)
- Oct. 29 - Chris leaves, perhaps (5th wedding anniversary)
- Oct. 30 - Hopeful end date for bringup
- Nov. 3 - wad returns to 1CC
Hardware
So far, we only have one blue wire to the A1 board.
The power supplies are individually checked out on a couple of boards, then they all will be powered up allowing EC and first boot testing to proceed. Once OFW is running, we start some long-term memory testing. Hardware validation won't really happen until after bringup. At this point, all hardware testing is done as part of software bringup.
For more hardware documentation, see XO-1.75 A1.
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
Miscellanious
Documentation
Early documentation may be obtained from a secure FTP site on dev.laptop.org:
sftp://dev.laptop.org/home/docs/1.75/ sftp://dev.laptop.org/home/docs/marvell/
If you already have a login on dev, let wad know and he will get you access privileges.
Information is also available on the Team Tech wiki.
Much of the documentation will be available on the XO 1.75 A1 board page.
Lodging
We will be staying at:
Our recommended medical provider is:
- The Taipei Adventist Hospital - English speaking, decent care, just make sure to bring your own soap, towel, and arrange for outside food delivery. There is a Burger King across the street, so your confederate can smuggle in food, and then answer "yes" to the question "Is that a Whopper in your pocket"?