OLPC Firmware Q2B73

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OLPC Firmware B2 Release Q2B73 - 2007-02-16

This is the firmware for the B2 boards. It will also work on B1 and ATest. Do not use it on pre-B1 boards - it will brick them because of the EC microcode.

File:Olpc-Q2B73.rom

MD5: 81835c0eb96d312bf037762297f247d5 olpc-Q2B73.rom

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Changes since Q2B61

• EC: PQ2B73
  • Add new mechanisms to determine when the battery is not behaving as expected and disable charging.
    • Communication to the battery results in all zeros.
    • The voltage from the monitor IC in the battery has not changed for 4 minutes during a charge/discharge.
  • Bugfix: Temperature of battery shows 256'C (0xFF).
  • Bugfix: Battery shows fully charged but actual battery capacity is only 10 minutes.
  • Bugfix: Battery data not updated if the touchpad is constantly busy.
  • Change LED be solid red when battery low rather than blink

• OFW svn commit 161
  • SDHCI: Handle DMA boundary crossings.
  • OLPC: Added battery status display
  • OLPC fastboot - support for 66 MHz (B2 and later) systems.
  • OLPC VSA-less (fastboot) configuration: fixed edge/level settings for IRQs, thus resolving the problem with EHCI (USB2) not working reliably.
  • Linux Makefile: Added -m32 to CFLAGS for compilation on 64-bit systems.
  • OLPC touchpad diagnostic: added relative tracking mode and raw packet display feature.
  • sdhci.fth: The Marvell SDHCI implementation won't turn on the card power if a card removal notification is pending, so clear that notification before turning on power. Also turn on power before trying to detect the card.
  • Fixed problem with Kensington USB keyboards not working - OLPC trac #539.
  • OLPC sdhci driver: Added high speed SD card support.
  • Report total OLPC memory size in the memory node reg property and thus the banner, without subtracting the frame buffer and the memory used by things like VSA.

Installation Caveats

• If you have a B1 system:

1. Perform the auto-reinstall procedure at http://wiki.laptop.org/go/Autoreinstallation_image before upgrading to this firmware version
2. DO NOT use olpcflash to write new firmware images. Doing so will erase the manufacturing data that was added at the factory.

• After you reflash, you must power cycle by physically removing power from the system. A warm-start or button-induced restart is not sufficient. Please remove both the battery pack and wall adapter for 10 seconds.

ATest users only: If you use olpcflash to write this image, you must use the --brick option.
Example: olpcflash --brick -w image.rom
This will update your EC code.

Known issues

• Auto-repeat is slow on some USB keyboards
• NVRAM storage for configuration variables is not yet implemented.
• JFFS2 does not handle ECC
• The boot menu is incomplete
• Directory symlinks have a problem.

ATest -- Infineon RAMs only

This is a special purpose image. Do not use except on A-test boards with Infineon RAMS.

For more info see Upgrading_to_LinuxBIOS#Checking_your_DRAM_type

File:Olpc-Q2B73 CL2.5.rom

MD5: 0601548a9ec6267fd30b2451edf04c8e olpc-Q2B73_CL2.5.rom